Merge remote-tracking branch 'upstream/master' into fix-stream-compression-eos

1384 files changed, 30271 insertions, 101710 deletions

diff --git a/.gitignore b/.gitignore
index 5e38f5fa01..5ccad2e4f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,7 +16,7 @@ htmlcov/
 dist/
 *.egg
 py27/
-py34/
+py3[0-9]*/
 
 # Node installation output
 node_modules
diff --git a/BUILD b/BUILD
index 5c400d43b7..dfcded2197 100644
--- a/BUILD
+++ b/BUILD
@@ -57,6 +57,7 @@ GPR_PUBLIC_HDRS = [
     "include/grpc/support/string_util.h",
     "include/grpc/support/subprocess.h",
     "include/grpc/support/sync.h",
+    "include/grpc/support/sync_custom.h",
     "include/grpc/support/sync_generic.h",
     "include/grpc/support/sync_posix.h",
     "include/grpc/support/sync_windows.h",
@@ -523,7 +524,6 @@ grpc_cc_library(
         "src/core/lib/support/stack_lockfree.h",
         "src/core/lib/support/string.h",
         "src/core/lib/support/string_windows.h",
-        "src/core/lib/support/thd_internal.h",
         "src/core/lib/support/time_precise.h",
         "src/core/lib/support/tmpfile.h",
     ],
@@ -546,6 +546,7 @@ grpc_cc_library(
         "include/grpc/impl/codegen/gpr_types.h",
         "include/grpc/impl/codegen/port_platform.h",
         "include/grpc/impl/codegen/sync.h",
+        "include/grpc/impl/codegen/sync_custom.h",
         "include/grpc/impl/codegen/sync_generic.h",
         "include/grpc/impl/codegen/sync_posix.h",
         "include/grpc/impl/codegen/sync_windows.h",
@@ -573,9 +574,14 @@ grpc_cc_library(
         "src/core/lib/compression/compression.c",
         "src/core/lib/compression/message_compress.c",
         "src/core/lib/compression/stream_compression.c",
+        "src/core/lib/compression/stream_compression_gzip.c",
+        "src/core/lib/compression/stream_compression_identity.c",
+        "src/core/lib/debug/stats.c",
+        "src/core/lib/debug/stats_data.c",
         "src/core/lib/http/format_request.c",
         "src/core/lib/http/httpcli.c",
         "src/core/lib/http/parser.c",
+        "src/core/lib/iomgr/call_combiner.c",
         "src/core/lib/iomgr/closure.c",
         "src/core/lib/iomgr/combiner.c",
         "src/core/lib/iomgr/endpoint.c",
@@ -584,8 +590,6 @@ grpc_cc_library(
         "src/core/lib/iomgr/endpoint_pair_windows.c",
         "src/core/lib/iomgr/error.c",
         "src/core/lib/iomgr/ev_epoll1_linux.c",
-        "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c",
-        "src/core/lib/iomgr/ev_epoll_thread_pool_linux.c",
         "src/core/lib/iomgr/ev_epollex_linux.c",
         "src/core/lib/iomgr/ev_epollsig_linux.c",
         "src/core/lib/iomgr/ev_poll_posix.c",
@@ -703,9 +707,14 @@ grpc_cc_library(
         "src/core/lib/compression/algorithm_metadata.h",
         "src/core/lib/compression/message_compress.h",
         "src/core/lib/compression/stream_compression.h",
+        "src/core/lib/compression/stream_compression_gzip.h",
+        "src/core/lib/compression/stream_compression_identity.h",
+        "src/core/lib/debug/stats.h",
+        "src/core/lib/debug/stats_data.h",
         "src/core/lib/http/format_request.h",
         "src/core/lib/http/httpcli.h",
         "src/core/lib/http/parser.h",
+        "src/core/lib/iomgr/call_combiner.h",
         "src/core/lib/iomgr/closure.h",
         "src/core/lib/iomgr/combiner.h",
         "src/core/lib/iomgr/endpoint.h",
@@ -713,8 +722,6 @@ grpc_cc_library(
         "src/core/lib/iomgr/error.h",
         "src/core/lib/iomgr/error_internal.h",
         "src/core/lib/iomgr/ev_epoll1_linux.h",
-        "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h",
-        "src/core/lib/iomgr/ev_epoll_thread_pool_linux.h",
         "src/core/lib/iomgr/ev_epollex_linux.h",
         "src/core/lib/iomgr/ev_epollsig_linux.h",
         "src/core/lib/iomgr/ev_poll_posix.h",
@@ -840,7 +847,7 @@ grpc_cc_library(
         "grpc_deadline_filter",
         "grpc_lb_policy_pick_first",
         "grpc_lb_policy_round_robin",
-        "grpc_load_reporting",
+        "grpc_server_load_reporting",
         "grpc_max_age_filter",
         "grpc_message_size_filter",
         "grpc_resolver_dns_ares",
@@ -986,6 +993,7 @@ grpc_cc_library(
     name = "grpc_codegen",
     language = "c",
     public_hdrs = [
+        "include/grpc/impl/codegen/byte_buffer.h",
         "include/grpc/impl/codegen/byte_buffer_reader.h",
         "include/grpc/impl/codegen/compression_types.h",
         "include/grpc/impl/codegen/connectivity_state.h",
@@ -1084,14 +1092,14 @@ grpc_cc_library(
 )
 
 grpc_cc_library(
-    name = "grpc_load_reporting",
+    name = "grpc_server_load_reporting",
     srcs = [
-        "src/core/ext/filters/load_reporting/load_reporting.c",
-        "src/core/ext/filters/load_reporting/load_reporting_filter.c",
+        "src/core/ext/filters/load_reporting/server_load_reporting_filter.c",
+        "src/core/ext/filters/load_reporting/server_load_reporting_plugin.c",
     ],
     hdrs = [
-        "src/core/ext/filters/load_reporting/load_reporting.h",
-        "src/core/ext/filters/load_reporting/load_reporting_filter.h",
+        "src/core/ext/filters/load_reporting/server_load_reporting_filter.h",
+        "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h",
     ],
     language = "c",
     deps = [
@@ -1484,6 +1492,7 @@ grpc_cc_library(
     public_hdrs = [
         "include/grpc++/impl/codegen/async_stream.h",
         "include/grpc++/impl/codegen/async_unary_call.h",
+        "include/grpc++/impl/codegen/byte_buffer.h",
         "include/grpc++/impl/codegen/call.h",
         "include/grpc++/impl/codegen/call_hook.h",
         "include/grpc++/impl/codegen/channel_interface.h",
@@ -1596,4 +1605,19 @@ grpc_cc_library(
     ],
 )
 
+grpc_cc_library(
+    name = "grpc++_core_stats",
+    srcs = [
+        "src/cpp/util/core_stats.cc",
+    ],
+    hdrs = [
+        "src/cpp/util/core_stats.h",
+    ],
+    language = "c++",
+    deps = [
+        ":grpc++",
+        "//src/proto/grpc/core:stats_proto",
+    ],
+)
+
 grpc_generate_one_off_targets()
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b593a9ae5..2e448c92b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,6 +91,8 @@ if (MSVC)
   add_definitions(/wd4065 /wd4506)
   # TODO(jtattermusch): revisit C4267 occurrences throughout the code
   add_definitions(/wd4267)
+  # TODO(jtattermusch): needed to build boringssl with VS2017, revisit later
+  add_definitions(/wd4987 /wd4774 /wd4819 /wd4996 /wd4619)
 endif()
 
 if (gRPC_USE_PROTO_LITE)
@@ -121,42 +123,28 @@ if("${gRPC_ZLIB_PROVIDER}" STREQUAL "module")
     set(gRPC_INSTALL FALSE)
   endif()
 elseif("${gRPC_ZLIB_PROVIDER}" STREQUAL "package")
-  find_package(ZLIB)
-  if(TARGET ZLIB::ZLIB)
-    set(_gRPC_ZLIB_LIBRARIES ZLIB::ZLIB)
-  endif()
+  find_package(ZLIB REQUIRED)
+  set(_gRPC_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
   set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
 endif()
 
 if("${gRPC_CARES_PROVIDER}" STREQUAL "module")
   if(NOT CARES_ROOT_DIR)
-    set(CARES_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src/c-ares)
+    set(CARES_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/cares)
   endif()
-  string(TOLOWER ${CMAKE_SYSTEM_NAME} CARES_SYSTEM_NAME)
+  set(CARES_SHARED OFF CACHE BOOL "disable shared library")
+  set(CARES_STATIC ON CACHE BOOL "link cares statically")
   set(CARES_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/cares")
-  set(CARES_BUILD_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares")
-  set(CARES_PLATFORM_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/config_${CARES_SYSTEM_NAME}")
-  if(EXISTS "${CARES_ROOT_DIR}/CMakeLists.txt")
-    if("${CARES_SYSTEM_NAME}" MATCHES "windows")
-      add_definitions(-DCARES_STATICLIB=1)
-      add_definitions(-DWIN32_LEAN_AND_MEAN=1)
-    else()
-      add_definitions(-DHAVE_CONFIG_H=1)
-      add_definitions(-D_GNU_SOURCE=1)
-    endif()
-    add_subdirectory(src/c-ares third_party/cares)
-    if(TARGET cares)
-        set(_gRPC_CARES_LIBRARIES cares)
-    endif()
-  else()
-    message(WARNING "gRPC_CARES_PROVIDER is \"module\" but CARES_ROOT_DIR is wrong")
+  add_subdirectory(third_party/cares/cares)
+  if(TARGET c-ares)
+    set(_gRPC_CARES_LIBRARIES c-ares)
   endif()
   if(gRPC_INSTALL)
     message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_CARES_PROVIDER is \"module\"")
     set(gRPC_INSTALL FALSE)
   endif()
 elseif("${gRPC_CARES_PROVIDER}" STREQUAL "package")
-  find_package(c-ares CONFIG)
+  find_package(c-ares REQUIRED CONFIG)
   if(TARGET c-ares::cares)
     set(_gRPC_CARES_LIBRARIES c-ares::cares)
   endif()
@@ -190,6 +178,7 @@ if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
     endif()
     if(TARGET protoc)
       set(_gRPC_PROTOBUF_PROTOC protoc)
+      set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protoc>)
     endif()
   else()
       message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
@@ -199,7 +188,7 @@ if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
     set(gRPC_INSTALL FALSE)
   endif()
 elseif("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "package")
-  find_package(Protobuf ${gRPC_PROTOBUF_PACKAGE_TYPE})
+  find_package(Protobuf REQUIRED ${gRPC_PROTOBUF_PACKAGE_TYPE})
   if(Protobuf_FOUND OR PROTOBUF_FOUND)
     if(TARGET protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
       set(_gRPC_PROTOBUF_LIBRARIES protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
@@ -213,8 +202,10 @@ elseif("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "package")
     endif()
     if(TARGET protobuf::protoc)
       set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
+      set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
     else()
       set(_gRPC_PROTOBUF_PROTOC ${PROTOBUF_PROTOC_EXECUTABLE})
+      set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE})
     endif()
     set(_gRPC_FIND_PROTOBUF "if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND)\n  find_package(Protobuf ${gRPC_PROTOBUF_PACKAGE_TYPE})\nendif()")
   endif()
@@ -242,11 +233,9 @@ if("${gRPC_SSL_PROVIDER}" STREQUAL "module")
     set(gRPC_INSTALL FALSE)
   endif()
 elseif("${gRPC_SSL_PROVIDER}" STREQUAL "package")
-  find_package(OpenSSL)
-  if(TARGET OpenSSL::SSL)
-    set(_gRPC_SSL_LIBRARIES OpenSSL::SSL)
-  endif()
-  set(_gRPC_FIND_SSL "if(NOT OpenSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
+  find_package(OpenSSL REQUIRED)
+  set(_gRPC_SSL_LIBRARIES ${OPENSSL_LIBRARIES})
+  set(_gRPC_FIND_SSL "if(NOT OPENSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
 endif()
 
 if("${gRPC_GFLAGS_PROVIDER}" STREQUAL "module")
@@ -339,7 +328,7 @@ function(protobuf_generate_grpc_cpp)
              "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}_mock.grpc.pb.h"
              "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc"
              "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h"
-      COMMAND $<TARGET_FILE:${_gRPC_PROTOBUF_PROTOC}>
+      COMMAND ${_gRPC_PROTOBUF_PROTOC_EXECUTABLE}
       ARGS --grpc_out=generate_mock_code=true:${_gRPC_PROTO_GENS_DIR}
            --cpp_out=${_gRPC_PROTO_GENS_DIR}
            --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
@@ -419,6 +408,9 @@ add_dependencies(buildtests_c ev_epollsig_linux_test)
 endif()
 add_dependencies(buildtests_c fake_resolver_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_c fake_transport_security_test)
+endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_c fd_conservation_posix_test)
 endif()
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
@@ -456,6 +448,7 @@ add_dependencies(buildtests_c grpc_auth_context_test)
 add_dependencies(buildtests_c grpc_b64_test)
 add_dependencies(buildtests_c grpc_byte_buffer_reader_test)
 add_dependencies(buildtests_c grpc_channel_args_test)
+add_dependencies(buildtests_c grpc_channel_stack_builder_test)
 add_dependencies(buildtests_c grpc_channel_stack_test)
 add_dependencies(buildtests_c grpc_completion_queue_test)
 add_dependencies(buildtests_c grpc_completion_queue_threading_test)
@@ -528,6 +521,9 @@ add_dependencies(buildtests_c sockaddr_utils_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_c socket_utils_test)
 endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_c ssl_transport_security_test)
+endif()
 add_dependencies(buildtests_c status_conversion_test)
 add_dependencies(buildtests_c stream_compression_test)
 add_dependencies(buildtests_c stream_owned_slice_test)
@@ -754,6 +750,7 @@ endif()
 add_dependencies(buildtests_cxx server_crash_test_client)
 add_dependencies(buildtests_cxx server_request_call_test)
 add_dependencies(buildtests_cxx shutdown_test)
+add_dependencies(buildtests_cxx stats_test)
 add_dependencies(buildtests_cxx status_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx streaming_throughput_test)
@@ -764,6 +761,18 @@ add_dependencies(buildtests_cxx thread_stress_test)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 add_dependencies(buildtests_cxx writes_per_rpc_test)
 endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_cxx resolver_component_test_unsecure)
+endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_cxx resolver_component_test)
+endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_cxx resolver_component_tests_runner_invoker_unsecure)
+endif()
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+add_dependencies(buildtests_cxx resolver_component_tests_runner_invoker)
+endif()
 
 add_custom_target(buildtests
   DEPENDS buildtests_c buildtests_cxx)
@@ -832,16 +841,14 @@ endif()
 
 
 target_include_directories(gpr
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -867,6 +874,7 @@ foreach(_hdr
   include/grpc/support/string_util.h
   include/grpc/support/subprocess.h
   include/grpc/support/sync.h
+  include/grpc/support/sync_custom.h
   include/grpc/support/sync_generic.h
   include/grpc/support/sync_posix.h
   include/grpc/support/sync_windows.h
@@ -885,6 +893,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -924,16 +933,14 @@ endif()
 
 
 target_include_directories(gpr_test_util
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -958,9 +965,14 @@ add_library(grpc
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -969,8 +981,6 @@ add_library(grpc
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -1183,8 +1193,8 @@ add_library(grpc
   src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c
   src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c
   src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c
-  src/core/ext/filters/load_reporting/load_reporting.c
-  src/core/ext/filters/load_reporting/load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
   src/core/ext/census/base_resources.c
   src/core/ext/census/context.c
   src/core/ext/census/gen/census.pb.c
@@ -1220,16 +1230,14 @@ endif()
 
 
 target_include_directories(grpc
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -1244,6 +1252,7 @@ target_link_libraries(grpc
 )
 
 foreach(_hdr
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -1260,6 +1269,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -1306,9 +1316,14 @@ add_library(grpc_cronet
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -1317,8 +1332,6 @@ add_library(grpc_cronet
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -1508,8 +1521,8 @@ add_library(grpc_cronet
   src/core/tsi/transport_security.c
   src/core/tsi/transport_security_adapter.c
   src/core/ext/transport/chttp2/client/chttp2_connector.c
-  src/core/ext/filters/load_reporting/load_reporting.c
-  src/core/ext/filters/load_reporting/load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
   src/core/plugin_registry/grpc_cronet_plugin_registry.c
 )
 
@@ -1526,16 +1539,14 @@ endif()
 
 
 target_include_directories(grpc_cronet
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -1550,6 +1561,7 @@ target_link_libraries(grpc_cronet
 )
 
 foreach(_hdr
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -1566,6 +1578,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -1622,9 +1635,14 @@ add_library(grpc_test_util
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -1633,8 +1651,6 @@ add_library(grpc_test_util
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -1804,16 +1820,14 @@ endif()
 
 
 target_include_directories(grpc_test_util
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -1826,6 +1840,7 @@ target_link_libraries(grpc_test_util
 )
 
 foreach(_hdr
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -1842,6 +1857,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -1882,9 +1898,14 @@ add_library(grpc_test_util_unsecure
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -1893,8 +1914,6 @@ add_library(grpc_test_util_unsecure
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -2064,16 +2083,14 @@ endif()
 
 
 target_include_directories(grpc_test_util_unsecure
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -2086,6 +2103,7 @@ target_link_libraries(grpc_test_util_unsecure
 )
 
 foreach(_hdr
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -2102,6 +2120,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -2128,9 +2147,14 @@ add_library(grpc_unsecure
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -2139,8 +2163,6 @@ add_library(grpc_unsecure
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -2310,8 +2332,8 @@ add_library(grpc_unsecure
   src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c
   src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c
   src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
-  src/core/ext/filters/load_reporting/load_reporting.c
-  src/core/ext/filters/load_reporting/load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_filter.c
+  src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
   src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c
   src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
   src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.c
@@ -2358,16 +2380,14 @@ endif()
 
 
 target_include_directories(grpc_unsecure
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -2381,6 +2401,7 @@ target_link_libraries(grpc_unsecure
 )
 
 foreach(_hdr
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -2397,6 +2418,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -2448,16 +2470,14 @@ endif()
 
 
 target_include_directories(reconnect_server
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -2492,16 +2512,14 @@ endif()
 
 
 target_include_directories(test_tcp_server
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -2575,16 +2593,14 @@ endif()
 
 
 target_include_directories(grpc++
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -2661,6 +2677,7 @@ foreach(_hdr
   include/grpc/support/string_util.h
   include/grpc/support/subprocess.h
   include/grpc/support/sync.h
+  include/grpc/support/sync_custom.h
   include/grpc/support/sync_generic.h
   include/grpc/support/sync_posix.h
   include/grpc/support/sync_windows.h
@@ -2679,6 +2696,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -2693,6 +2711,7 @@ foreach(_hdr
   include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/support/workaround_list.h
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -2703,6 +2722,7 @@ foreach(_hdr
   include/grpc/impl/codegen/status.h
   include/grpc++/impl/codegen/async_stream.h
   include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/byte_buffer.h
   include/grpc++/impl/codegen/call.h
   include/grpc++/impl/codegen/call_hook.h
   include/grpc++/impl/codegen/channel_interface.h
@@ -2749,6 +2769,66 @@ if (gRPC_INSTALL)
   )
 endif()
 
+if (gRPC_BUILD_TESTS)
+
+add_library(grpc++_core_stats
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/core/stats.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/core/stats.grpc.pb.cc
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/core/stats.pb.h
+  ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/core/stats.grpc.pb.h
+  src/cpp/util/core_stats.cc
+)
+
+if(WIN32 AND MSVC)
+  set_target_properties(grpc++_core_stats PROPERTIES COMPILE_PDB_NAME "grpc++_core_stats"
+    COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
+  )
+  if (gRPC_INSTALL)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/grpc++_core_stats.pdb
+      DESTINATION ${gRPC_INSTALL_LIBDIR} OPTIONAL
+    )
+  endif()
+endif()
+
+protobuf_generate_grpc_cpp(
+  src/proto/grpc/core/stats.proto
+)
+
+target_include_directories(grpc++_core_stats
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${ZLIB_INCLUDE_DIR}
+  PRIVATE ${BENCHMARK}/include
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(grpc++_core_stats
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++
+)
+
+foreach(_hdr
+  src/cpp/util/core_stats.h
+)
+  string(REPLACE "include/" "" _path ${_hdr})
+  get_filename_component(_path ${_path} PATH)
+  install(FILES ${_hdr}
+    DESTINATION "${gRPC_INSTALL_INCLUDEDIR}/${_path}"
+  )
+endforeach()
+
+endif (gRPC_BUILD_TESTS)
 
 add_library(grpc++_cronet
   src/cpp/client/cronet_credentials.cc
@@ -2824,9 +2904,14 @@ add_library(grpc++_cronet
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
   src/core/lib/compression/stream_compression.c
+  src/core/lib/compression/stream_compression_gzip.c
+  src/core/lib/compression/stream_compression_identity.c
+  src/core/lib/debug/stats.c
+  src/core/lib/debug/stats_data.c
   src/core/lib/http/format_request.c
   src/core/lib/http/httpcli.c
   src/core/lib/http/parser.c
+  src/core/lib/iomgr/call_combiner.c
   src/core/lib/iomgr/closure.c
   src/core/lib/iomgr/combiner.c
   src/core/lib/iomgr/endpoint.c
@@ -2835,8 +2920,6 @@ add_library(grpc++_cronet
   src/core/lib/iomgr/endpoint_pair_windows.c
   src/core/lib/iomgr/error.c
   src/core/lib/iomgr/ev_epoll1_linux.c
-  src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   src/core/lib/iomgr/ev_epollex_linux.c
   src/core/lib/iomgr/ev_epollsig_linux.c
   src/core/lib/iomgr/ev_poll_posix.c
@@ -3005,16 +3088,14 @@ endif()
 
 
 target_include_directories(grpc++_cronet
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -3092,6 +3173,7 @@ foreach(_hdr
   include/grpc/support/string_util.h
   include/grpc/support/subprocess.h
   include/grpc/support/sync.h
+  include/grpc/support/sync_custom.h
   include/grpc/support/sync_generic.h
   include/grpc/support/sync_posix.h
   include/grpc/support/sync_windows.h
@@ -3110,6 +3192,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -3124,6 +3207,7 @@ foreach(_hdr
   include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/support/workaround_list.h
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -3134,6 +3218,7 @@ foreach(_hdr
   include/grpc/impl/codegen/status.h
   include/grpc++/impl/codegen/async_stream.h
   include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/byte_buffer.h
   include/grpc++/impl/codegen/call.h
   include/grpc++/impl/codegen/call_hook.h
   include/grpc++/impl/codegen/channel_interface.h
@@ -3204,16 +3289,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc++_error_details
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -3271,16 +3354,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc++_proto_reflection_desc_db
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -3334,16 +3415,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc++_reflection
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -3394,16 +3473,14 @@ endif()
 
 
 target_include_directories(grpc++_test_config
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -3474,16 +3551,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc++_test_util
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -3504,6 +3579,7 @@ target_link_libraries(grpc++_test_util
 foreach(_hdr
   include/grpc++/impl/codegen/async_stream.h
   include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/byte_buffer.h
   include/grpc++/impl/codegen/call.h
   include/grpc++/impl/codegen/call_hook.h
   include/grpc++/impl/codegen/channel_interface.h
@@ -3531,6 +3607,7 @@ foreach(_hdr
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
   include/grpc++/impl/codegen/time.h
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -3547,6 +3624,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -3613,16 +3691,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc++_test_util_unsecure
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -3643,6 +3719,7 @@ target_link_libraries(grpc++_test_util_unsecure
 foreach(_hdr
   include/grpc++/impl/codegen/async_stream.h
   include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/byte_buffer.h
   include/grpc++/impl/codegen/call.h
   include/grpc++/impl/codegen/call_hook.h
   include/grpc++/impl/codegen/channel_interface.h
@@ -3670,6 +3747,7 @@ foreach(_hdr
   include/grpc++/impl/codegen/stub_options.h
   include/grpc++/impl/codegen/sync_stream.h
   include/grpc++/impl/codegen/time.h
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -3686,6 +3764,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -3754,16 +3833,14 @@ endif()
 
 
 target_include_directories(grpc++_unsecure
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -3839,6 +3916,7 @@ foreach(_hdr
   include/grpc/support/string_util.h
   include/grpc/support/subprocess.h
   include/grpc/support/sync.h
+  include/grpc/support/sync_custom.h
   include/grpc/support/sync_generic.h
   include/grpc/support/sync_posix.h
   include/grpc/support/sync_windows.h
@@ -3857,6 +3935,7 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
   include/grpc/impl/codegen/sync.h
+  include/grpc/impl/codegen/sync_custom.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
@@ -3871,6 +3950,7 @@ foreach(_hdr
   include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/support/workaround_list.h
+  include/grpc/impl/codegen/byte_buffer.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
@@ -3881,6 +3961,7 @@ foreach(_hdr
   include/grpc/impl/codegen/status.h
   include/grpc++/impl/codegen/async_stream.h
   include/grpc++/impl/codegen/async_unary_call.h
+  include/grpc++/impl/codegen/byte_buffer.h
   include/grpc++/impl/codegen/call.h
   include/grpc++/impl/codegen/call_hook.h
   include/grpc++/impl/codegen/channel_interface.h
@@ -3944,16 +4025,14 @@ endif()
 
 
 target_include_directories(grpc_benchmark
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4005,16 +4084,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(grpc_cli_libs
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4067,16 +4144,14 @@ endif()
 
 
 target_include_directories(grpc_plugin_support
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -4147,16 +4222,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(http2_client_main
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4204,16 +4277,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(interop_client_helper
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4276,16 +4347,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(interop_client_main
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4329,16 +4398,14 @@ endif()
 
 
 target_include_directories(interop_server_helper
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4400,16 +4467,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(interop_server_lib
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4453,16 +4518,14 @@ endif()
 
 
 target_include_directories(interop_server_main
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4543,16 +4606,14 @@ protobuf_generate_grpc_cpp(
 )
 
 target_include_directories(qps
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -4567,6 +4628,7 @@ target_link_libraries(qps
   ${_gRPC_ALLTARGETS_LIBRARIES}
   grpc_test_util
   grpc++_test_util
+  grpc++_core_stats
   grpc++
   grpc
 )
@@ -4591,16 +4653,14 @@ endif()
 
 
 target_include_directories(grpc_csharp_ext
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -4688,16 +4748,14 @@ endif()
 
 
 target_include_directories(ares
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -4728,16 +4786,14 @@ endif()
 
 
 target_include_directories(bad_client_test
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -4771,16 +4827,14 @@ endif()
 
 
 target_include_directories(bad_ssl_test_server
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -4851,6 +4905,9 @@ add_library(end2end_tests
   test/core/end2end/tests/simple_delayed_request.c
   test/core/end2end/tests/simple_metadata.c
   test/core/end2end/tests/simple_request.c
+  test/core/end2end/tests/stream_compression_compressed_payload.c
+  test/core/end2end/tests/stream_compression_payload.c
+  test/core/end2end/tests/stream_compression_ping_pong_streaming.c
   test/core/end2end/tests/streaming_error_response.c
   test/core/end2end/tests/trailing_metadata.c
   test/core/end2end/tests/workaround_cronet_compression.c
@@ -4871,16 +4928,14 @@ endif()
 
 
 target_include_directories(end2end_tests
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -4951,6 +5006,9 @@ add_library(end2end_nosec_tests
   test/core/end2end/tests/simple_delayed_request.c
   test/core/end2end/tests/simple_metadata.c
   test/core/end2end/tests/simple_request.c
+  test/core/end2end/tests/stream_compression_compressed_payload.c
+  test/core/end2end/tests/stream_compression_payload.c
+  test/core/end2end/tests/stream_compression_ping_pong_streaming.c
   test/core/end2end/tests/streaming_error_response.c
   test/core/end2end/tests/trailing_metadata.c
   test/core/end2end/tests/workaround_cronet_compression.c
@@ -4971,16 +5029,14 @@ endif()
 
 
 target_include_directories(end2end_nosec_tests
-  PUBLIC $<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  PUBLIC $<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
   PRIVATE ${BORINGSSL_ROOT_DIR}/include
   PRIVATE ${PROTOBUF_ROOT_DIR}/src
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5011,9 +5067,7 @@ target_include_directories(alarm_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5042,9 +5096,7 @@ target_include_directories(algorithm_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5073,9 +5125,7 @@ target_include_directories(alloc_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5102,9 +5152,7 @@ target_include_directories(alpn_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5133,9 +5181,7 @@ target_include_directories(arena_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5162,9 +5208,7 @@ target_include_directories(bad_server_response_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5194,9 +5238,7 @@ target_include_directories(bdp_estimator_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5225,9 +5267,7 @@ target_include_directories(bin_decoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5254,9 +5294,7 @@ target_include_directories(bin_encoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5283,9 +5321,7 @@ target_include_directories(byte_stream_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5314,9 +5350,7 @@ target_include_directories(census_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5345,9 +5379,7 @@ target_include_directories(census_intrusive_hash_map_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5376,9 +5408,7 @@ target_include_directories(census_resource_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5407,9 +5437,7 @@ target_include_directories(census_trace_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5438,9 +5466,7 @@ target_include_directories(channel_create_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5468,9 +5494,7 @@ target_include_directories(check_epollexclusive
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5505,9 +5529,7 @@ target_include_directories(chttp2_hpack_encoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5536,9 +5558,7 @@ target_include_directories(chttp2_stream_map_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5567,9 +5587,7 @@ target_include_directories(chttp2_varint_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5598,9 +5616,7 @@ target_include_directories(combiner_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5629,9 +5645,7 @@ target_include_directories(compression_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5660,9 +5674,7 @@ target_include_directories(concurrent_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5691,9 +5703,7 @@ target_include_directories(connection_refused_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5722,9 +5732,7 @@ target_include_directories(dns_resolver_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5753,9 +5761,7 @@ target_include_directories(dns_resolver_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5785,9 +5791,7 @@ target_include_directories(dualstack_socket_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5817,9 +5821,7 @@ target_include_directories(endpoint_pair_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5848,9 +5850,7 @@ target_include_directories(error_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5880,9 +5880,7 @@ target_include_directories(ev_epollsig_linux_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5912,9 +5910,7 @@ target_include_directories(fake_resolver_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5931,6 +5927,37 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 
+add_executable(fake_transport_security_test
+  test/core/tsi/fake_transport_security_test.c
+  test/core/tsi/transport_security_test_lib.c
+)
+
+
+target_include_directories(fake_transport_security_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(fake_transport_security_test
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  gpr_test_util
+  gpr
+  grpc
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
 add_executable(fd_conservation_posix_test
   test/core/iomgr/fd_conservation_posix_test.c
 )
@@ -5944,9 +5971,7 @@ target_include_directories(fd_conservation_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -5977,9 +6002,7 @@ target_include_directories(fd_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6009,9 +6032,7 @@ target_include_directories(fling_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6040,9 +6061,7 @@ target_include_directories(fling_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6072,9 +6091,7 @@ target_include_directories(fling_stream_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6105,9 +6122,7 @@ target_include_directories(fling_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6136,9 +6151,7 @@ target_include_directories(gen_hpack_tables
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6172,9 +6185,7 @@ target_include_directories(gen_legal_metadata_characters
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6206,9 +6217,7 @@ target_include_directories(gen_percent_encoding_tables
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6242,9 +6251,7 @@ target_include_directories(goaway_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6274,9 +6281,7 @@ target_include_directories(gpr_avl_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6303,9 +6308,7 @@ target_include_directories(gpr_backoff_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6332,9 +6335,7 @@ target_include_directories(gpr_cmdline_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6361,9 +6362,7 @@ target_include_directories(gpr_cpu_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6390,9 +6389,7 @@ target_include_directories(gpr_env_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6419,9 +6416,7 @@ target_include_directories(gpr_histogram_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6448,9 +6443,7 @@ target_include_directories(gpr_host_port_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6477,9 +6470,7 @@ target_include_directories(gpr_log_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6506,9 +6497,7 @@ target_include_directories(gpr_mpscq_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6535,9 +6524,7 @@ target_include_directories(gpr_spinlock_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6564,9 +6551,7 @@ target_include_directories(gpr_stack_lockfree_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6593,9 +6578,7 @@ target_include_directories(gpr_string_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6622,9 +6605,7 @@ target_include_directories(gpr_sync_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6651,9 +6632,7 @@ target_include_directories(gpr_thd_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6680,9 +6659,7 @@ target_include_directories(gpr_time_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6709,9 +6686,7 @@ target_include_directories(gpr_tls_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6738,9 +6713,7 @@ target_include_directories(gpr_useful_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6767,9 +6740,7 @@ target_include_directories(grpc_auth_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6798,9 +6769,7 @@ target_include_directories(grpc_b64_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6829,9 +6798,7 @@ target_include_directories(grpc_byte_buffer_reader_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6860,9 +6827,7 @@ target_include_directories(grpc_channel_args_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6878,6 +6843,35 @@ target_link_libraries(grpc_channel_args_test
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
+add_executable(grpc_channel_stack_builder_test
+  test/core/channel/channel_stack_builder_test.c
+)
+
+
+target_include_directories(grpc_channel_stack_builder_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(grpc_channel_stack_builder_test
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
 add_executable(grpc_channel_stack_test
   test/core/channel/channel_stack_test.c
 )
@@ -6891,9 +6885,7 @@ target_include_directories(grpc_channel_stack_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6922,9 +6914,7 @@ target_include_directories(grpc_completion_queue_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6953,9 +6943,7 @@ target_include_directories(grpc_completion_queue_threading_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -6983,9 +6971,7 @@ target_include_directories(grpc_create_jwt
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7021,9 +7007,7 @@ target_include_directories(grpc_credentials_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7052,9 +7036,7 @@ target_include_directories(grpc_fetch_oauth2
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7083,9 +7065,7 @@ target_include_directories(grpc_invalid_channel_args_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7115,9 +7095,7 @@ target_include_directories(grpc_json_token_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7147,9 +7125,7 @@ target_include_directories(grpc_jwt_verifier_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7177,9 +7153,7 @@ target_include_directories(grpc_print_google_default_creds_token
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7214,9 +7188,7 @@ target_include_directories(grpc_security_connector_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7244,9 +7216,7 @@ target_include_directories(grpc_verify_jwt
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7282,9 +7252,7 @@ target_include_directories(handshake_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7316,9 +7284,7 @@ target_include_directories(handshake_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7349,9 +7315,7 @@ target_include_directories(hpack_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7380,9 +7344,7 @@ target_include_directories(hpack_table_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7411,9 +7373,7 @@ target_include_directories(http_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7442,9 +7402,7 @@ target_include_directories(httpcli_format_request_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7474,9 +7432,7 @@ target_include_directories(httpcli_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7507,9 +7463,7 @@ target_include_directories(httpscli_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7539,9 +7493,7 @@ target_include_directories(init_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7570,9 +7522,7 @@ target_include_directories(invalid_call_argument_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7601,9 +7551,7 @@ target_include_directories(json_rewrite
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7630,9 +7578,7 @@ target_include_directories(json_rewrite_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7661,9 +7607,7 @@ target_include_directories(json_stream_error_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7692,9 +7636,7 @@ target_include_directories(json_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7723,9 +7665,7 @@ target_include_directories(lame_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7754,9 +7694,7 @@ target_include_directories(lb_policies_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7785,9 +7723,7 @@ target_include_directories(load_file_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7816,9 +7752,7 @@ target_include_directories(memory_profile_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7847,9 +7781,7 @@ target_include_directories(memory_profile_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7879,9 +7811,7 @@ target_include_directories(memory_profile_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7911,9 +7841,7 @@ target_include_directories(message_compress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7942,9 +7870,7 @@ target_include_directories(minimal_stack_is_minimal_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -7973,9 +7899,7 @@ target_include_directories(mlog_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8004,9 +7928,7 @@ target_include_directories(multiple_server_queues_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8035,9 +7957,7 @@ target_include_directories(murmur_hash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8064,9 +7984,7 @@ target_include_directories(no_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8095,9 +8013,7 @@ target_include_directories(num_external_connectivity_watchers_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8126,9 +8042,7 @@ target_include_directories(parse_address_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8157,9 +8071,7 @@ target_include_directories(percent_encoding_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8189,9 +8101,7 @@ target_include_directories(pollset_set_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8222,9 +8132,7 @@ target_include_directories(resolve_address_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8254,9 +8162,7 @@ target_include_directories(resolve_address_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8285,9 +8191,7 @@ target_include_directories(resource_quota_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8316,9 +8220,7 @@ target_include_directories(secure_channel_create_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8347,9 +8249,7 @@ target_include_directories(secure_endpoint_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8378,9 +8278,7 @@ target_include_directories(sequential_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8409,9 +8307,7 @@ target_include_directories(server_chttp2_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8440,9 +8336,7 @@ target_include_directories(server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8471,9 +8365,7 @@ target_include_directories(slice_buffer_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8502,9 +8394,7 @@ target_include_directories(slice_hash_table_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8533,9 +8423,7 @@ target_include_directories(slice_string_helpers_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8564,9 +8452,7 @@ target_include_directories(slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8595,9 +8481,7 @@ target_include_directories(sockaddr_resolver_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8626,9 +8510,7 @@ target_include_directories(sockaddr_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8658,9 +8540,7 @@ target_include_directories(socket_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8676,6 +8556,37 @@ target_link_libraries(socket_utils_test
 endif()
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
+add_executable(ssl_transport_security_test
+  test/core/tsi/ssl_transport_security_test.c
+  test/core/tsi/transport_security_test_lib.c
+)
+
+
+target_include_directories(ssl_transport_security_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(ssl_transport_security_test
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  gpr_test_util
+  gpr
+  grpc
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
 add_executable(status_conversion_test
   test/core/transport/status_conversion_test.c
@@ -8690,9 +8601,7 @@ target_include_directories(status_conversion_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8721,9 +8630,7 @@ target_include_directories(stream_compression_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8752,9 +8659,7 @@ target_include_directories(stream_owned_slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8784,9 +8689,7 @@ target_include_directories(tcp_client_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8816,9 +8719,7 @@ target_include_directories(tcp_client_uv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8848,9 +8749,7 @@ target_include_directories(tcp_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8881,9 +8780,7 @@ target_include_directories(tcp_server_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8913,9 +8810,7 @@ target_include_directories(tcp_server_uv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8944,9 +8839,7 @@ target_include_directories(time_averaged_stats_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -8975,9 +8868,7 @@ target_include_directories(timeout_encoding_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9006,9 +8897,7 @@ target_include_directories(timer_heap_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9037,9 +8926,7 @@ target_include_directories(timer_list_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9068,9 +8955,7 @@ target_include_directories(transport_connectivity_state_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9099,9 +8984,7 @@ target_include_directories(transport_metadata_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9130,9 +9013,7 @@ target_include_directories(transport_pid_controller_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9162,9 +9043,7 @@ target_include_directories(transport_security_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9195,9 +9074,7 @@ target_include_directories(udp_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9227,9 +9104,7 @@ target_include_directories(uri_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9259,9 +9134,7 @@ target_include_directories(wakeup_fd_cv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -9293,9 +9166,7 @@ target_include_directories(alarm_cpp_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9335,9 +9206,7 @@ target_include_directories(async_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9377,9 +9246,7 @@ target_include_directories(auth_property_iterator_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9420,9 +9287,7 @@ target_include_directories(bm_arena
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9466,9 +9331,7 @@ target_include_directories(bm_call_create
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9512,9 +9375,7 @@ target_include_directories(bm_chttp2_hpack
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9558,9 +9419,7 @@ target_include_directories(bm_chttp2_transport
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9604,9 +9463,7 @@ target_include_directories(bm_closure
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9650,9 +9507,7 @@ target_include_directories(bm_cq
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9696,9 +9551,7 @@ target_include_directories(bm_cq_multiple_threads
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9742,9 +9595,7 @@ target_include_directories(bm_error
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9788,9 +9639,7 @@ target_include_directories(bm_fullstack_streaming_ping_pong
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9834,9 +9683,7 @@ target_include_directories(bm_fullstack_streaming_pump
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9880,9 +9727,7 @@ target_include_directories(bm_fullstack_trickle
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9903,6 +9748,7 @@ target_link_libraries(bm_fullstack_trickle
   grpc_unsecure
   gpr_test_util
   gpr
+  grpc++_test_config
   ${_gRPC_GFLAGS_LIBRARIES}
 )
 
@@ -9926,9 +9772,7 @@ target_include_directories(bm_fullstack_unary_ping_pong
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -9972,9 +9816,7 @@ target_include_directories(bm_metadata
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10018,9 +9860,7 @@ target_include_directories(bm_pollset
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10063,9 +9903,7 @@ target_include_directories(channel_arguments_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10102,9 +9940,7 @@ target_include_directories(channel_filter_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10141,9 +9977,7 @@ target_include_directories(cli_call_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10185,9 +10019,7 @@ target_include_directories(client_crash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10228,9 +10060,7 @@ target_include_directories(client_crash_test_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10270,9 +10100,7 @@ target_include_directories(client_lb_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10347,9 +10175,7 @@ target_include_directories(codegen_test_full
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10362,6 +10188,7 @@ target_include_directories(codegen_test_full
 target_link_libraries(codegen_test_full
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_core_stats
   grpc++
   grpc
   gpr
@@ -10422,9 +10249,7 @@ target_include_directories(codegen_test_minimal
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10437,6 +10262,7 @@ target_include_directories(codegen_test_minimal
 target_link_libraries(codegen_test_minimal
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_core_stats
   grpc
   gpr
   ${_gRPC_GFLAGS_LIBRARIES}
@@ -10460,9 +10286,7 @@ target_include_directories(credentials_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10499,9 +10323,7 @@ target_include_directories(cxx_byte_buffer_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10540,9 +10362,7 @@ target_include_directories(cxx_slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10581,9 +10401,7 @@ target_include_directories(cxx_string_ref_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10619,9 +10437,7 @@ target_include_directories(cxx_time_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10660,9 +10476,7 @@ target_include_directories(end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10709,9 +10523,7 @@ target_include_directories(error_details_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10747,9 +10559,7 @@ target_include_directories(filter_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10789,9 +10599,7 @@ target_include_directories(generic_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10838,9 +10646,7 @@ target_include_directories(golden_file_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10877,9 +10683,7 @@ target_include_directories(grpc_cli
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -10916,9 +10720,7 @@ target_include_directories(grpc_cpp_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -10954,9 +10756,7 @@ target_include_directories(grpc_csharp_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -10992,9 +10792,7 @@ target_include_directories(grpc_node_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -11030,9 +10828,7 @@ target_include_directories(grpc_objective_c_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -11068,9 +10864,7 @@ target_include_directories(grpc_php_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -11106,9 +10900,7 @@ target_include_directories(grpc_python_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -11144,9 +10936,7 @@ target_include_directories(grpc_ruby_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
@@ -11199,9 +10989,7 @@ target_include_directories(grpc_tool_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11251,9 +11039,7 @@ target_include_directories(grpclb_api_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11298,9 +11084,7 @@ target_include_directories(grpclb_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11347,9 +11131,7 @@ target_include_directories(grpclb_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11389,9 +11171,7 @@ target_include_directories(health_service_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11431,9 +11211,7 @@ target_include_directories(http2_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11474,9 +11252,7 @@ target_include_directories(hybrid_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11516,9 +11292,7 @@ target_include_directories(interop_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11562,9 +11336,7 @@ target_include_directories(interop_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11610,9 +11382,7 @@ target_include_directories(interop_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11653,9 +11423,7 @@ target_include_directories(json_run_localhost
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11697,9 +11465,7 @@ target_include_directories(memory_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11745,9 +11511,7 @@ target_include_directories(metrics_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11785,9 +11549,7 @@ target_include_directories(mock_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11827,9 +11589,7 @@ target_include_directories(noop-benchmark
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11864,9 +11624,7 @@ target_include_directories(proto_server_reflection_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11908,9 +11666,7 @@ target_include_directories(proto_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11947,9 +11703,7 @@ target_include_directories(qps_interarrival_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -11992,9 +11746,7 @@ target_include_directories(qps_json_driver
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12008,6 +11760,7 @@ target_link_libraries(qps_json_driver
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   qps
+  grpc++_core_stats
   grpc++_test_util
   grpc_test_util
   grpc++
@@ -12037,9 +11790,7 @@ target_include_directories(qps_openloop_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12053,6 +11804,7 @@ target_link_libraries(qps_openloop_test
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   qps
+  grpc++_core_stats
   grpc++_test_util
   grpc_test_util
   grpc++
@@ -12082,9 +11834,7 @@ target_include_directories(qps_worker
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12098,6 +11848,7 @@ target_link_libraries(qps_worker
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   qps
+  grpc++_core_stats
   grpc++_test_util
   grpc_test_util
   grpc++
@@ -12147,9 +11898,7 @@ target_include_directories(reconnect_interop_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12211,9 +11960,7 @@ target_include_directories(reconnect_interop_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12256,9 +12003,7 @@ target_include_directories(secure_auth_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12299,9 +12044,7 @@ target_include_directories(secure_sync_unary_ping_pong_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12315,6 +12058,7 @@ target_link_libraries(secure_sync_unary_ping_pong_test
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   qps
+  grpc++_core_stats
   grpc++_test_util
   grpc_test_util
   grpc++
@@ -12344,9 +12088,7 @@ target_include_directories(server_builder_plugin_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12400,9 +12142,7 @@ target_include_directories(server_builder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12442,9 +12182,7 @@ target_include_directories(server_context_test_spouse_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12484,9 +12222,7 @@ target_include_directories(server_crash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12527,9 +12263,7 @@ target_include_directories(server_crash_test_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12583,9 +12317,7 @@ target_include_directories(server_request_call_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12625,9 +12357,7 @@ target_include_directories(shutdown_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12652,6 +12382,45 @@ target_link_libraries(shutdown_test
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
+add_executable(stats_test
+  test/core/debug/stats_test.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(stats_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(stats_test
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util
+  grpc_test_util
+  grpc
+  gpr_test_util
+  gpr
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
 add_executable(status_test
   test/cpp/util/status_test.cc
   third_party/googletest/googletest/src/gtest-all.cc
@@ -12667,9 +12436,7 @@ target_include_directories(status_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12709,9 +12476,7 @@ target_include_directories(streaming_throughput_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12783,9 +12548,7 @@ target_include_directories(stress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12826,9 +12589,7 @@ target_include_directories(thread_manager_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12866,9 +12627,7 @@ target_include_directories(thread_stress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12909,9 +12668,7 @@ target_include_directories(writes_per_rpc_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/googletest/include
@@ -12950,9 +12707,7 @@ target_include_directories(public_headers_must_be_c89
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -12979,9 +12734,7 @@ target_include_directories(badreq_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13012,9 +12765,7 @@ target_include_directories(connection_prefix_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13045,9 +12796,7 @@ target_include_directories(head_of_line_blocking_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13078,9 +12827,7 @@ target_include_directories(headers_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13111,9 +12858,7 @@ target_include_directories(initial_settings_frame_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13144,9 +12889,7 @@ target_include_directories(large_metadata_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13177,9 +12920,7 @@ target_include_directories(server_registered_method_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13210,9 +12951,7 @@ target_include_directories(simple_request_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13243,9 +12982,7 @@ target_include_directories(unknown_frame_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13276,9 +13013,7 @@ target_include_directories(window_overflow_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13310,9 +13045,7 @@ target_include_directories(bad_ssl_cert_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13344,9 +13077,7 @@ target_include_directories(bad_ssl_cert_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13376,9 +13107,7 @@ target_include_directories(h2_census_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13408,9 +13137,7 @@ target_include_directories(h2_compress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13440,9 +13167,7 @@ target_include_directories(h2_fakesec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13473,9 +13198,7 @@ target_include_directories(h2_fd_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13506,9 +13229,7 @@ target_include_directories(h2_full_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13539,9 +13260,7 @@ target_include_directories(h2_full+pipe_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13572,9 +13291,7 @@ target_include_directories(h2_full+trace_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13604,9 +13321,7 @@ target_include_directories(h2_full+workarounds_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13636,9 +13351,7 @@ target_include_directories(h2_http_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13668,9 +13381,7 @@ target_include_directories(h2_load_reporting_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13700,9 +13411,7 @@ target_include_directories(h2_oauth2_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13732,9 +13441,7 @@ target_include_directories(h2_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13764,9 +13471,7 @@ target_include_directories(h2_sockpair_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13796,9 +13501,7 @@ target_include_directories(h2_sockpair+trace_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13828,9 +13531,7 @@ target_include_directories(h2_sockpair_1byte_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13860,9 +13561,7 @@ target_include_directories(h2_ssl_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13892,9 +13591,7 @@ target_include_directories(h2_ssl_cert_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13924,9 +13621,7 @@ target_include_directories(h2_ssl_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13957,9 +13652,7 @@ target_include_directories(h2_uds_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -13990,9 +13683,7 @@ target_include_directories(inproc_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14022,9 +13713,7 @@ target_include_directories(h2_census_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14054,9 +13743,7 @@ target_include_directories(h2_compress_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14087,9 +13774,7 @@ target_include_directories(h2_fd_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14120,9 +13805,7 @@ target_include_directories(h2_full_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14153,9 +13836,7 @@ target_include_directories(h2_full+pipe_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14186,9 +13867,7 @@ target_include_directories(h2_full+trace_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14218,9 +13897,7 @@ target_include_directories(h2_full+workarounds_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14250,9 +13927,7 @@ target_include_directories(h2_http_proxy_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14282,9 +13957,7 @@ target_include_directories(h2_load_reporting_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14314,9 +13987,7 @@ target_include_directories(h2_proxy_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14346,9 +14017,7 @@ target_include_directories(h2_sockpair_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14378,9 +14047,7 @@ target_include_directories(h2_sockpair+trace_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14410,9 +14077,7 @@ target_include_directories(h2_sockpair_1byte_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14443,9 +14108,7 @@ target_include_directories(h2_uds_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14476,9 +14139,7 @@ target_include_directories(inproc_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14494,6 +14155,178 @@ target_link_libraries(inproc_nosec_test
 
 endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
+add_executable(resolver_component_test_unsecure
+  test/cpp/naming/resolver_component_test.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(resolver_component_test_unsecure
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(resolver_component_test_unsecure
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util_unsecure
+  grpc_test_util_unsecure
+  gpr_test_util
+  grpc++_unsecure
+  grpc_unsecure
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
+add_executable(resolver_component_test
+  test/cpp/naming/resolver_component_test.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(resolver_component_test
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(resolver_component_test
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util
+  grpc_test_util
+  gpr_test_util
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
+add_executable(resolver_component_tests_runner_invoker_unsecure
+  test/cpp/naming/resolver_component_tests_runner_invoker.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(resolver_component_tests_runner_invoker_unsecure
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(resolver_component_tests_runner_invoker_unsecure
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util
+  grpc_test_util
+  gpr_test_util
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
+
+add_executable(resolver_component_tests_runner_invoker
+  test/cpp/naming/resolver_component_tests_runner_invoker.cc
+  third_party/googletest/googletest/src/gtest-all.cc
+  third_party/googletest/googlemock/src/gmock-all.cc
+)
+
+
+target_include_directories(resolver_component_tests_runner_invoker
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+  PRIVATE third_party/googletest/googletest/include
+  PRIVATE third_party/googletest/googletest
+  PRIVATE third_party/googletest/googlemock/include
+  PRIVATE third_party/googletest/googlemock
+  PRIVATE ${_gRPC_PROTO_GENS_DIR}
+)
+
+target_link_libraries(resolver_component_tests_runner_invoker
+  ${_gRPC_PROTOBUF_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc++_test_util
+  grpc_test_util
+  gpr_test_util
+  grpc++
+  grpc
+  gpr
+  grpc++_test_config
+  ${_gRPC_GFLAGS_LIBRARIES}
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
 
 add_executable(api_fuzzer_one_entry
   test/core/end2end/fuzzers/api_fuzzer.c
@@ -14509,9 +14342,7 @@ target_include_directories(api_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14541,9 +14372,7 @@ target_include_directories(client_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14573,9 +14402,7 @@ target_include_directories(hpack_parser_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14605,9 +14432,7 @@ target_include_directories(http_request_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14637,9 +14462,7 @@ target_include_directories(http_response_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14669,9 +14492,7 @@ target_include_directories(json_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14701,9 +14522,7 @@ target_include_directories(nanopb_fuzzer_response_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14733,9 +14552,7 @@ target_include_directories(nanopb_fuzzer_serverlist_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14765,9 +14582,7 @@ target_include_directories(percent_decode_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14797,9 +14612,7 @@ target_include_directories(percent_encode_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14829,9 +14642,7 @@ target_include_directories(server_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14861,9 +14672,7 @@ target_include_directories(ssl_server_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14893,9 +14702,7 @@ target_include_directories(uri_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
   PRIVATE ${CARES_INCLUDE_DIR}
-  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
@@ -14924,7 +14731,7 @@ if (gRPC_INSTALL)
 endif()
 
 foreach(_config gRPCConfig gRPCConfigVersion)
-  configure_file(tools/cmake/${_config}.cmake.in
+  configure_file(cmake/${_config}.cmake.in
     ${_config}.cmake @ONLY)
   install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_config}.cmake
     DESTINATION ${gRPC_INSTALL_CMAKEDIR}
diff --git a/INSTALL.md b/INSTALL.md
index 5ae02f22e7..ea613f321d 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -141,8 +141,6 @@ MINGW64$ make
 NOTE: While most of the make targets are buildable under Mingw, some haven't been ported to Windows yet
 and may fail to build (mostly trying to include POSIX headers not available on Mingw).
 
-### Pre-generated Visual Studio solution (DEPRECATED)
+### Pre-generated Visual Studio solution (DELETED)
 
-*WARNING: This used to be the recommended way to build on Windows, but because of significant limitations (hard to build dependencies including boringssl, .proto codegen is hard to support, ..), it is no longer recommended. Use cmake to build on Windows instead.*
-
-The pre-generated VS projects & solution are checked into the repository under the [vsprojects](/vsprojects) directory.
+*WARNING: This used to be the recommended way to build on Windows, but because of significant limitations (hard to build dependencies including boringssl, .proto codegen is hard to support, ..) we are no longer providing them. Use cmake to build on Windows instead.*
diff --git a/Makefile b/Makefile
index 392c8f318f..517ddfd90e 100644
--- a/Makefile
+++ b/Makefile
@@ -410,7 +410,7 @@ E = @echo
 Q = @
 endif
 
-CORE_VERSION = 4.0.0-dev
+CORE_VERSION = 5.0.0-dev
 CPP_VERSION = 1.7.0-dev
 CSHARP_VERSION = 1.7.0-dev
 
@@ -460,7 +460,7 @@ SHARED_EXT_CORE = dll
 SHARED_EXT_CPP = dll
 SHARED_EXT_CSHARP = dll
 SHARED_PREFIX =
-SHARED_VERSION_CORE = -4
+SHARED_VERSION_CORE = -5
 SHARED_VERSION_CPP = -1
 SHARED_VERSION_CSHARP = -1
 else ifeq ($(SYSTEM),Darwin)
@@ -976,6 +976,7 @@ endpoint_pair_test: $(BINDIR)/$(CONFIG)/endpoint_pair_test
 error_test: $(BINDIR)/$(CONFIG)/error_test
 ev_epollsig_linux_test: $(BINDIR)/$(CONFIG)/ev_epollsig_linux_test
 fake_resolver_test: $(BINDIR)/$(CONFIG)/fake_resolver_test
+fake_transport_security_test: $(BINDIR)/$(CONFIG)/fake_transport_security_test
 fd_conservation_posix_test: $(BINDIR)/$(CONFIG)/fd_conservation_posix_test
 fd_posix_test: $(BINDIR)/$(CONFIG)/fd_posix_test
 fling_client: $(BINDIR)/$(CONFIG)/fling_client
@@ -1007,6 +1008,7 @@ grpc_auth_context_test: $(BINDIR)/$(CONFIG)/grpc_auth_context_test
 grpc_b64_test: $(BINDIR)/$(CONFIG)/grpc_b64_test
 grpc_byte_buffer_reader_test: $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test
 grpc_channel_args_test: $(BINDIR)/$(CONFIG)/grpc_channel_args_test
+grpc_channel_stack_builder_test: $(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test
 grpc_channel_stack_test: $(BINDIR)/$(CONFIG)/grpc_channel_stack_test
 grpc_completion_queue_test: $(BINDIR)/$(CONFIG)/grpc_completion_queue_test
 grpc_completion_queue_threading_test: $(BINDIR)/$(CONFIG)/grpc_completion_queue_threading_test
@@ -1075,6 +1077,7 @@ sockaddr_resolver_test: $(BINDIR)/$(CONFIG)/sockaddr_resolver_test
 sockaddr_utils_test: $(BINDIR)/$(CONFIG)/sockaddr_utils_test
 socket_utils_test: $(BINDIR)/$(CONFIG)/socket_utils_test
 ssl_server_fuzzer: $(BINDIR)/$(CONFIG)/ssl_server_fuzzer
+ssl_transport_security_test: $(BINDIR)/$(CONFIG)/ssl_transport_security_test
 status_conversion_test: $(BINDIR)/$(CONFIG)/status_conversion_test
 stream_compression_test: $(BINDIR)/$(CONFIG)/stream_compression_test
 stream_owned_slice_test: $(BINDIR)/$(CONFIG)/stream_owned_slice_test
@@ -1170,6 +1173,7 @@ server_crash_test: $(BINDIR)/$(CONFIG)/server_crash_test
 server_crash_test_client: $(BINDIR)/$(CONFIG)/server_crash_test_client
 server_request_call_test: $(BINDIR)/$(CONFIG)/server_request_call_test
 shutdown_test: $(BINDIR)/$(CONFIG)/shutdown_test
+stats_test: $(BINDIR)/$(CONFIG)/stats_test
 status_test: $(BINDIR)/$(CONFIG)/status_test
 streaming_throughput_test: $(BINDIR)/$(CONFIG)/streaming_throughput_test
 stress_test: $(BINDIR)/$(CONFIG)/stress_test
@@ -1262,6 +1266,10 @@ h2_sockpair+trace_nosec_test: $(BINDIR)/$(CONFIG)/h2_sockpair+trace_nosec_test
 h2_sockpair_1byte_nosec_test: $(BINDIR)/$(CONFIG)/h2_sockpair_1byte_nosec_test
 h2_uds_nosec_test: $(BINDIR)/$(CONFIG)/h2_uds_nosec_test
 inproc_nosec_test: $(BINDIR)/$(CONFIG)/inproc_nosec_test
+resolver_component_test_unsecure: $(BINDIR)/$(CONFIG)/resolver_component_test_unsecure
+resolver_component_test: $(BINDIR)/$(CONFIG)/resolver_component_test
+resolver_component_tests_runner_invoker_unsecure: $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure
+resolver_component_tests_runner_invoker: $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker
 api_fuzzer_one_entry: $(BINDIR)/$(CONFIG)/api_fuzzer_one_entry
 client_fuzzer_one_entry: $(BINDIR)/$(CONFIG)/client_fuzzer_one_entry
 hpack_parser_fuzzer_test_one_entry: $(BINDIR)/$(CONFIG)/hpack_parser_fuzzer_test_one_entry
@@ -1328,9 +1336,9 @@ pc_cxx: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc
 pc_cxx_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc
 
 ifeq ($(EMBED_OPENSSL),true)
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_p256-x86_64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pool_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_p256-x86_64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pool_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 else
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 endif
 
 
@@ -1366,6 +1374,7 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/error_test \
   $(BINDIR)/$(CONFIG)/ev_epollsig_linux_test \
   $(BINDIR)/$(CONFIG)/fake_resolver_test \
+  $(BINDIR)/$(CONFIG)/fake_transport_security_test \
   $(BINDIR)/$(CONFIG)/fd_conservation_posix_test \
   $(BINDIR)/$(CONFIG)/fd_posix_test \
   $(BINDIR)/$(CONFIG)/fling_client \
@@ -1394,6 +1403,7 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/grpc_b64_test \
   $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test \
   $(BINDIR)/$(CONFIG)/grpc_channel_args_test \
+  $(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test \
   $(BINDIR)/$(CONFIG)/grpc_channel_stack_test \
   $(BINDIR)/$(CONFIG)/grpc_completion_queue_test \
   $(BINDIR)/$(CONFIG)/grpc_completion_queue_threading_test \
@@ -1448,6 +1458,7 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/sockaddr_resolver_test \
   $(BINDIR)/$(CONFIG)/sockaddr_utils_test \
   $(BINDIR)/$(CONFIG)/socket_utils_test \
+  $(BINDIR)/$(CONFIG)/ssl_transport_security_test \
   $(BINDIR)/$(CONFIG)/status_conversion_test \
   $(BINDIR)/$(CONFIG)/stream_compression_test \
   $(BINDIR)/$(CONFIG)/stream_owned_slice_test \
@@ -1600,6 +1611,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/server_crash_test_client \
   $(BINDIR)/$(CONFIG)/server_request_call_test \
   $(BINDIR)/$(CONFIG)/shutdown_test \
+  $(BINDIR)/$(CONFIG)/stats_test \
   $(BINDIR)/$(CONFIG)/status_test \
   $(BINDIR)/$(CONFIG)/streaming_throughput_test \
   $(BINDIR)/$(CONFIG)/stress_test \
@@ -1644,6 +1656,10 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/boringssl_x509_test \
   $(BINDIR)/$(CONFIG)/boringssl_tab_test \
   $(BINDIR)/$(CONFIG)/boringssl_v3name_test \
+  $(BINDIR)/$(CONFIG)/resolver_component_test_unsecure \
+  $(BINDIR)/$(CONFIG)/resolver_component_test \
+  $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure \
+  $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker \
 
 else
 buildtests_cxx: privatelibs_cxx \
@@ -1715,12 +1731,17 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/server_crash_test_client \
   $(BINDIR)/$(CONFIG)/server_request_call_test \
   $(BINDIR)/$(CONFIG)/shutdown_test \
+  $(BINDIR)/$(CONFIG)/stats_test \
   $(BINDIR)/$(CONFIG)/status_test \
   $(BINDIR)/$(CONFIG)/streaming_throughput_test \
   $(BINDIR)/$(CONFIG)/stress_test \
   $(BINDIR)/$(CONFIG)/thread_manager_test \
   $(BINDIR)/$(CONFIG)/thread_stress_test \
   $(BINDIR)/$(CONFIG)/writes_per_rpc_test \
+  $(BINDIR)/$(CONFIG)/resolver_component_test_unsecure \
+  $(BINDIR)/$(CONFIG)/resolver_component_test \
+  $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure \
+  $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker \
 
 endif
 
@@ -1788,6 +1809,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/ev_epollsig_linux_test || ( echo test ev_epollsig_linux_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fake_resolver_test"
 	$(Q) $(BINDIR)/$(CONFIG)/fake_resolver_test || ( echo test fake_resolver_test failed ; exit 1 )
+	$(E) "[RUN]     Testing fake_transport_security_test"
+	$(Q) $(BINDIR)/$(CONFIG)/fake_transport_security_test || ( echo test fake_transport_security_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fd_conservation_posix_test"
 	$(Q) $(BINDIR)/$(CONFIG)/fd_conservation_posix_test || ( echo test fd_conservation_posix_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fd_posix_test"
@@ -1840,6 +1863,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test || ( echo test grpc_byte_buffer_reader_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_channel_args_test"
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_channel_args_test || ( echo test grpc_channel_args_test failed ; exit 1 )
+	$(E) "[RUN]     Testing grpc_channel_stack_builder_test"
+	$(Q) $(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test || ( echo test grpc_channel_stack_builder_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_channel_stack_test"
 	$(Q) $(BINDIR)/$(CONFIG)/grpc_channel_stack_test || ( echo test grpc_channel_stack_test failed ; exit 1 )
 	$(E) "[RUN]     Testing grpc_completion_queue_test"
@@ -1936,6 +1961,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/sockaddr_utils_test || ( echo test sockaddr_utils_test failed ; exit 1 )
 	$(E) "[RUN]     Testing socket_utils_test"
 	$(Q) $(BINDIR)/$(CONFIG)/socket_utils_test || ( echo test socket_utils_test failed ; exit 1 )
+	$(E) "[RUN]     Testing ssl_transport_security_test"
+	$(Q) $(BINDIR)/$(CONFIG)/ssl_transport_security_test || ( echo test ssl_transport_security_test failed ; exit 1 )
 	$(E) "[RUN]     Testing status_conversion_test"
 	$(Q) $(BINDIR)/$(CONFIG)/status_conversion_test || ( echo test status_conversion_test failed ; exit 1 )
 	$(E) "[RUN]     Testing stream_compression_test"
@@ -2114,6 +2141,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/server_request_call_test || ( echo test server_request_call_test failed ; exit 1 )
 	$(E) "[RUN]     Testing shutdown_test"
 	$(Q) $(BINDIR)/$(CONFIG)/shutdown_test || ( echo test shutdown_test failed ; exit 1 )
+	$(E) "[RUN]     Testing stats_test"
+	$(Q) $(BINDIR)/$(CONFIG)/stats_test || ( echo test stats_test failed ; exit 1 )
 	$(E) "[RUN]     Testing status_test"
 	$(Q) $(BINDIR)/$(CONFIG)/status_test || ( echo test status_test failed ; exit 1 )
 	$(E) "[RUN]     Testing streaming_throughput_test"
@@ -2124,6 +2153,10 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/thread_stress_test || ( echo test thread_stress_test failed ; exit 1 )
 	$(E) "[RUN]     Testing writes_per_rpc_test"
 	$(Q) $(BINDIR)/$(CONFIG)/writes_per_rpc_test || ( echo test writes_per_rpc_test failed ; exit 1 )
+	$(E) "[RUN]     Testing resolver_component_tests_runner_invoker_unsecure"
+	$(Q) $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure || ( echo test resolver_component_tests_runner_invoker_unsecure failed ; exit 1 )
+	$(E) "[RUN]     Testing resolver_component_tests_runner_invoker"
+	$(Q) $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker || ( echo test resolver_component_tests_runner_invoker failed ; exit 1 )
 
 
 flaky_test_cxx: buildtests_cxx
@@ -2241,6 +2274,22 @@ $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc:
 	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 ifeq ($(NO_PROTOC),true)
+$(GENDIR)/src/proto/grpc/core/stats.pb.cc: protoc_dep_error
+$(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc: protoc_dep_error
+else
+
+$(GENDIR)/src/proto/grpc/core/stats.pb.cc: src/proto/grpc/core/stats.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[PROTOC]  Generating protobuf CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --cpp_out=$(GENDIR) $<
+
+$(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc: src/proto/grpc/core/stats.proto $(GENDIR)/src/proto/grpc/core/stats.pb.cc $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
+endif
+
+ifeq ($(NO_PROTOC),true)
 $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc: protoc_dep_error
 $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc: protoc_dep_error
 else
@@ -2471,12 +2520,12 @@ $(GENDIR)/src/proto/grpc/testing/stats.pb.cc: protoc_dep_error
 $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc: protoc_dep_error
 else
 
-$(GENDIR)/src/proto/grpc/testing/stats.pb.cc: src/proto/grpc/testing/stats.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+$(GENDIR)/src/proto/grpc/testing/stats.pb.cc: src/proto/grpc/testing/stats.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/core/stats.pb.cc
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --cpp_out=$(GENDIR) $<
 
-$(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc: src/proto/grpc/testing/stats.proto $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+$(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc: src/proto/grpc/testing/stats.proto $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/core/stats.pb.cc $(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
@@ -2595,7 +2644,7 @@ install-shared_c: shared_c strip-shared_c install-pkg-config_c
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgpr.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
@@ -2604,7 +2653,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
@@ -2613,7 +2662,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_cronet.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
@@ -2622,7 +2671,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so
 endif
 ifneq ($(SYSTEM),MINGW32)
@@ -2639,7 +2688,7 @@ install-shared_cxx: shared_cxx strip-shared_cxx install-shared_c install-pkg-con
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
@@ -2648,7 +2697,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_cronet.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_error_details$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
@@ -2657,7 +2706,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_error_details$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_error_details.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_error_details$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_error_details.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_error_details$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_error_details.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_error_details$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_error_details.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
@@ -2666,7 +2715,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_reflection.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
@@ -2675,7 +2724,7 @@ endif
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so
 endif
 ifneq ($(SYSTEM),MINGW32)
@@ -2692,7 +2741,7 @@ install-shared_csharp: shared_csharp strip-shared_csharp
 ifeq ($(SYSTEM),MINGW32)
 	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a $(prefix)/lib/libgrpc_csharp_ext.a
 else ifneq ($(SYSTEM),Darwin)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so.4
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so
 endif
 ifneq ($(SYSTEM),MINGW32)
@@ -2809,6 +2858,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/support/string_util.h \
     include/grpc/support/subprocess.h \
     include/grpc/support/sync.h \
+    include/grpc/support/sync_custom.h \
     include/grpc/support/sync_generic.h \
     include/grpc/support/sync_posix.h \
     include/grpc/support/sync_windows.h \
@@ -2827,6 +2877,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -2857,8 +2908,8 @@ $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OB
 ifeq ($(SYSTEM),Darwin)
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.4 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.4
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.5 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.5
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
 endif
 endif
@@ -2905,9 +2956,14 @@ LIBGRPC_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -2916,8 +2972,6 @@ LIBGRPC_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -3130,8 +3184,8 @@ LIBGRPC_SRC = \
     src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c \
     src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c \
     src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c \
-    src/core/ext/filters/load_reporting/load_reporting.c \
-    src/core/ext/filters/load_reporting/load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_plugin.c \
     src/core/ext/census/base_resources.c \
     src/core/ext/census/context.c \
     src/core/ext/census/gen/census.pb.c \
@@ -3154,6 +3208,7 @@ LIBGRPC_SRC = \
     src/core/plugin_registry/grpc_plugin_registry.c \
 
 PUBLIC_HEADERS_C += \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -3170,6 +3225,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -3224,8 +3280,8 @@ $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_
 ifeq ($(SYSTEM),Darwin)
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.4 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.4
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.5 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
 endif
 endif
@@ -3251,9 +3307,14 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -3262,8 +3323,6 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -3453,11 +3512,12 @@ LIBGRPC_CRONET_SRC = \
     src/core/tsi/transport_security.c \
     src/core/tsi/transport_security_adapter.c \
     src/core/ext/transport/chttp2/client/chttp2_connector.c \
-    src/core/ext/filters/load_reporting/load_reporting.c \
-    src/core/ext/filters/load_reporting/load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_plugin.c \
     src/core/plugin_registry/grpc_cronet_plugin_registry.c \
 
 PUBLIC_HEADERS_C += \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -3474,6 +3534,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -3518,8 +3579,8 @@ $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(L
 ifeq ($(SYSTEM),Darwin)
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.4 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.4
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.5 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
 endif
 endif
@@ -3564,9 +3625,14 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -3575,8 +3641,6 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -3733,6 +3797,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/ext/filters/http/server/http_server_filter.c \
 
 PUBLIC_HEADERS_C += \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -3749,6 +3814,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -3813,9 +3879,14 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -3824,8 +3895,6 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -3982,6 +4051,7 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/ext/filters/http/server/http_server_filter.c \
 
 PUBLIC_HEADERS_C += \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -3998,6 +4068,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -4035,9 +4106,14 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -4046,8 +4122,6 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -4217,8 +4291,8 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c \
     src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c \
     src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c \
-    src/core/ext/filters/load_reporting/load_reporting.c \
-    src/core/ext/filters/load_reporting/load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_plugin.c \
     src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c \
     src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c \
     src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.c \
@@ -4252,6 +4326,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/plugin_registry/grpc_unsecure_plugin_registry.c \
 
 PUBLIC_HEADERS_C += \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -4268,6 +4343,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -4310,8 +4386,8 @@ $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $
 ifeq ($(SYSTEM),Darwin)
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.4 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.4
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.5 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.5
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
 endif
 endif
@@ -4505,6 +4581,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/support/string_util.h \
     include/grpc/support/subprocess.h \
     include/grpc/support/sync.h \
+    include/grpc/support/sync_custom.h \
     include/grpc/support/sync_generic.h \
     include/grpc/support/sync_posix.h \
     include/grpc/support/sync_windows.h \
@@ -4523,6 +4600,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -4537,6 +4615,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/slice_buffer.h \
     include/grpc/status.h \
     include/grpc/support/workaround_list.h \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -4547,6 +4626,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/status.h \
     include/grpc++/impl/codegen/async_stream.h \
     include/grpc++/impl/codegen/async_unary_call.h \
+    include/grpc++/impl/codegen/byte_buffer.h \
     include/grpc++/impl/codegen/call.h \
     include/grpc++/impl/codegen/call_hook.h \
     include/grpc++/impl/codegen/channel_interface.h \
@@ -4640,6 +4720,58 @@ endif
 endif
 
 
+LIBGRPC++_CORE_STATS_SRC = \
+    $(GENDIR)/src/proto/grpc/core/stats.pb.cc $(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc \
+    src/cpp/util/core_stats.cc \
+
+PUBLIC_HEADERS_CXX += \
+    src/cpp/util/core_stats.h \
+
+LIBGRPC++_CORE_STATS_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC++_CORE_STATS_SRC))))
+
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure libraries if you don't have OpenSSL.
+
+$(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a: openssl_dep_error
+
+
+else
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+$(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a: protobuf_dep_error
+
+
+else
+
+$(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_CORE_STATS_OBJS) 
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBGRPC++_CORE_STATS_OBJS) 
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a
+endif
+
+
+
+
+endif
+
+endif
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(LIBGRPC++_CORE_STATS_OBJS:.o=.dep)
+endif
+endif
+$(OBJDIR)/$(CONFIG)/src/cpp/util/core_stats.o: $(GENDIR)/src/proto/grpc/core/stats.pb.cc $(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc
+
+
 LIBGRPC++_CRONET_SRC = \
     src/cpp/client/cronet_credentials.cc \
     src/cpp/client/insecure_credentials.cc \
@@ -4714,9 +4846,14 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -4725,8 +4862,6 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -4943,6 +5078,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/support/string_util.h \
     include/grpc/support/subprocess.h \
     include/grpc/support/sync.h \
+    include/grpc/support/sync_custom.h \
     include/grpc/support/sync_generic.h \
     include/grpc/support/sync_posix.h \
     include/grpc/support/sync_windows.h \
@@ -4961,6 +5097,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -4975,6 +5112,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/slice_buffer.h \
     include/grpc/status.h \
     include/grpc/support/workaround_list.h \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -4985,6 +5123,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/status.h \
     include/grpc++/impl/codegen/async_stream.h \
     include/grpc++/impl/codegen/async_unary_call.h \
+    include/grpc++/impl/codegen/byte_buffer.h \
     include/grpc++/impl/codegen/call.h \
     include/grpc++/impl/codegen/call_hook.h \
     include/grpc++/impl/codegen/channel_interface.h \
@@ -5338,6 +5477,7 @@ LIBGRPC++_TEST_UTIL_SRC = \
 PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/async_stream.h \
     include/grpc++/impl/codegen/async_unary_call.h \
+    include/grpc++/impl/codegen/byte_buffer.h \
     include/grpc++/impl/codegen/call.h \
     include/grpc++/impl/codegen/call_hook.h \
     include/grpc++/impl/codegen/channel_interface.h \
@@ -5365,6 +5505,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
     include/grpc++/impl/codegen/time.h \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -5381,6 +5522,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -5452,6 +5594,7 @@ LIBGRPC++_TEST_UTIL_UNSECURE_SRC = \
 PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/async_stream.h \
     include/grpc++/impl/codegen/async_unary_call.h \
+    include/grpc++/impl/codegen/byte_buffer.h \
     include/grpc++/impl/codegen/call.h \
     include/grpc++/impl/codegen/call_hook.h \
     include/grpc++/impl/codegen/channel_interface.h \
@@ -5479,6 +5622,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/codegen/stub_options.h \
     include/grpc++/impl/codegen/sync_stream.h \
     include/grpc++/impl/codegen/time.h \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -5495,6 +5639,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -5651,6 +5796,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/support/string_util.h \
     include/grpc/support/subprocess.h \
     include/grpc/support/sync.h \
+    include/grpc/support/sync_custom.h \
     include/grpc/support/sync_generic.h \
     include/grpc/support/sync_posix.h \
     include/grpc/support/sync_windows.h \
@@ -5669,6 +5815,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
     include/grpc/impl/codegen/sync.h \
+    include/grpc/impl/codegen/sync_custom.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
@@ -5683,6 +5830,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/slice_buffer.h \
     include/grpc/status.h \
     include/grpc/support/workaround_list.h \
+    include/grpc/impl/codegen/byte_buffer.h \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
@@ -5693,6 +5841,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/status.h \
     include/grpc++/impl/codegen/async_stream.h \
     include/grpc++/impl/codegen/async_unary_call.h \
+    include/grpc++/impl/codegen/byte_buffer.h \
     include/grpc++/impl/codegen/call.h \
     include/grpc++/impl/codegen/call_hook.h \
     include/grpc++/impl/codegen/channel_interface.h \
@@ -8267,7 +8416,7 @@ PUBLIC_HEADERS_C += \
 LIBARES_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBARES_SRC))))
 
 $(LIBARES_OBJS): CPPFLAGS += -Ithird_party/cares -Ithird_party/cares/cares $(if $(subst Linux,,$(SYSTEM)),,-Ithird_party/cares/config_linux) $(if $(subst Darwin,,$(SYSTEM)),,-Ithird_party/cares/config_darwin) -fvisibility=hidden -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX $(if $(subst MINGW32,,$(SYSTEM)),-DHAVE_CONFIG_H,)
-$(LIBARES_OBJS): CFLAGS += -Wno-sign-conversion $(if $(subst MINGW32,,$(SYSTEM)),-Wno-invalid-source-encoding,)
+$(LIBARES_OBJS): CFLAGS += -Wno-sign-conversion $(if $(subst Darwin,,$(SYSTEM)),,-Wno-shorten-64-to-32) $(if $(subst MINGW32,,$(SYSTEM)),-Wno-invalid-source-encoding,)
 
 $(LIBDIR)/$(CONFIG)/libares.a: $(ZLIB_DEP)  $(LIBARES_OBJS) 
 	$(E) "[AR]      Creating $@"
@@ -8418,6 +8567,9 @@ LIBEND2END_TESTS_SRC = \
     test/core/end2end/tests/simple_delayed_request.c \
     test/core/end2end/tests/simple_metadata.c \
     test/core/end2end/tests/simple_request.c \
+    test/core/end2end/tests/stream_compression_compressed_payload.c \
+    test/core/end2end/tests/stream_compression_payload.c \
+    test/core/end2end/tests/stream_compression_ping_pong_streaming.c \
     test/core/end2end/tests/streaming_error_response.c \
     test/core/end2end/tests/trailing_metadata.c \
     test/core/end2end/tests/workaround_cronet_compression.c \
@@ -8513,6 +8665,9 @@ LIBEND2END_NOSEC_TESTS_SRC = \
     test/core/end2end/tests/simple_delayed_request.c \
     test/core/end2end/tests/simple_metadata.c \
     test/core/end2end/tests/simple_request.c \
+    test/core/end2end/tests/stream_compression_compressed_payload.c \
+    test/core/end2end/tests/stream_compression_payload.c \
+    test/core/end2end/tests/stream_compression_ping_pong_streaming.c \
     test/core/end2end/tests/streaming_error_response.c \
     test/core/end2end/tests/trailing_metadata.c \
     test/core/end2end/tests/workaround_cronet_compression.c \
@@ -9569,6 +9724,41 @@ endif
 endif
 
 
+FAKE_TRANSPORT_SECURITY_TEST_SRC = \
+    test/core/tsi/fake_transport_security_test.c \
+    test/core/tsi/transport_security_test_lib.c \
+
+FAKE_TRANSPORT_SECURITY_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(FAKE_TRANSPORT_SECURITY_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/fake_transport_security_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/fake_transport_security_test: $(FAKE_TRANSPORT_SECURITY_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(FAKE_TRANSPORT_SECURITY_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/fake_transport_security_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/tsi/fake_transport_security_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+
+$(OBJDIR)/$(CONFIG)/test/core/tsi/transport_security_test_lib.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+
+deps_fake_transport_security_test: $(FAKE_TRANSPORT_SECURITY_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(FAKE_TRANSPORT_SECURITY_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 FD_CONSERVATION_POSIX_TEST_SRC = \
     test/core/iomgr/fd_conservation_posix_test.c \
 
@@ -10561,6 +10751,38 @@ endif
 endif
 
 
+GRPC_CHANNEL_STACK_BUILDER_TEST_SRC = \
+    test/core/channel/channel_stack_builder_test.c \
+
+GRPC_CHANNEL_STACK_BUILDER_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_CHANNEL_STACK_BUILDER_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test: $(GRPC_CHANNEL_STACK_BUILDER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(GRPC_CHANNEL_STACK_BUILDER_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/grpc_channel_stack_builder_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/channel/channel_stack_builder_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_grpc_channel_stack_builder_test: $(GRPC_CHANNEL_STACK_BUILDER_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(GRPC_CHANNEL_STACK_BUILDER_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 GRPC_CHANNEL_STACK_TEST_SRC = \
     test/core/channel/channel_stack_test.c \
 
@@ -12737,6 +12959,41 @@ endif
 endif
 
 
+SSL_TRANSPORT_SECURITY_TEST_SRC = \
+    test/core/tsi/ssl_transport_security_test.c \
+    test/core/tsi/transport_security_test_lib.c \
+
+SSL_TRANSPORT_SECURITY_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(SSL_TRANSPORT_SECURITY_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/ssl_transport_security_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/ssl_transport_security_test: $(SSL_TRANSPORT_SECURITY_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(SSL_TRANSPORT_SECURITY_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/ssl_transport_security_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/tsi/ssl_transport_security_test.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+
+$(OBJDIR)/$(CONFIG)/test/core/tsi/transport_security_test_lib.o:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc.a
+
+deps_ssl_transport_security_test: $(SSL_TRANSPORT_SECURITY_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(SSL_TRANSPORT_SECURITY_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 STATUS_CONVERSION_TEST_SRC = \
     test/core/transport/status_conversion_test.c \
 
@@ -13969,17 +14226,17 @@ $(BINDIR)/$(CONFIG)/bm_fullstack_trickle: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/bm_fullstack_trickle: $(PROTOBUF_DEP) $(BM_FULLSTACK_TRICKLE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(BINDIR)/$(CONFIG)/bm_fullstack_trickle: $(PROTOBUF_DEP) $(BM_FULLSTACK_TRICKLE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(BM_FULLSTACK_TRICKLE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/bm_fullstack_trickle
+	$(Q) $(LDXX) $(LDFLAGS) $(BM_FULLSTACK_TRICKLE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/bm_fullstack_trickle
 
 endif
 
 endif
 
 $(BM_FULLSTACK_TRICKLE_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
-$(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_trickle.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_trickle.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_bm_fullstack_trickle: $(BM_FULLSTACK_TRICKLE_OBJS:.o=.dep)
 
@@ -14408,26 +14665,26 @@ $(BINDIR)/$(CONFIG)/codegen_test_full: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/codegen_test_full: $(PROTOBUF_DEP) $(CODEGEN_TEST_FULL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(BINDIR)/$(CONFIG)/codegen_test_full: $(PROTOBUF_DEP) $(CODEGEN_TEST_FULL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_FULL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_full
+	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_FULL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_full
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_full.o:  $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_full.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_codegen_test_full: $(CODEGEN_TEST_FULL_OBJS:.o=.dep)
 
@@ -14468,28 +14725,28 @@ $(BINDIR)/$(CONFIG)/codegen_test_minimal: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/codegen_test_minimal: $(PROTOBUF_DEP) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(BINDIR)/$(CONFIG)/codegen_test_minimal: $(PROTOBUF_DEP) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_minimal
+	$(Q) $(LDXX) $(LDFLAGS) $(CODEGEN_TEST_MINIMAL_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/codegen_test_minimal
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/control.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/messages.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/payloads.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/services.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/testing/stats.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_minimal.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/cpp/codegen/codegen_test_minimal.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
-$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_codegen_test_minimal: $(CODEGEN_TEST_MINIMAL_OBJS:.o=.dep)
 
@@ -15985,16 +16242,16 @@ $(BINDIR)/$(CONFIG)/qps_json_driver: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/qps_json_driver: $(PROTOBUF_DEP) $(QPS_JSON_DRIVER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(BINDIR)/$(CONFIG)/qps_json_driver: $(PROTOBUF_DEP) $(QPS_JSON_DRIVER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(QPS_JSON_DRIVER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_json_driver
+	$(Q) $(LDXX) $(LDFLAGS) $(QPS_JSON_DRIVER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_json_driver
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/cpp/qps/qps_json_driver.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(OBJDIR)/$(CONFIG)/test/cpp/qps/qps_json_driver.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_qps_json_driver: $(QPS_JSON_DRIVER_OBJS:.o=.dep)
 
@@ -16028,16 +16285,16 @@ $(BINDIR)/$(CONFIG)/qps_openloop_test: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/qps_openloop_test: $(PROTOBUF_DEP) $(QPS_OPENLOOP_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(BINDIR)/$(CONFIG)/qps_openloop_test: $(PROTOBUF_DEP) $(QPS_OPENLOOP_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(QPS_OPENLOOP_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_openloop_test
+	$(Q) $(LDXX) $(LDFLAGS) $(QPS_OPENLOOP_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_openloop_test
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/cpp/qps/qps_openloop_test.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(OBJDIR)/$(CONFIG)/test/cpp/qps/qps_openloop_test.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_qps_openloop_test: $(QPS_OPENLOOP_TEST_OBJS:.o=.dep)
 
@@ -16071,16 +16328,16 @@ $(BINDIR)/$(CONFIG)/qps_worker: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/qps_worker: $(PROTOBUF_DEP) $(QPS_WORKER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(BINDIR)/$(CONFIG)/qps_worker: $(PROTOBUF_DEP) $(QPS_WORKER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(QPS_WORKER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_worker
+	$(Q) $(LDXX) $(LDFLAGS) $(QPS_WORKER_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/qps_worker
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/cpp/qps/worker.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(OBJDIR)/$(CONFIG)/test/cpp/qps/worker.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_qps_worker: $(QPS_WORKER_OBJS:.o=.dep)
 
@@ -16263,16 +16520,16 @@ $(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test: protobuf_dep_error
 
 else
 
-$(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test: $(PROTOBUF_DEP) $(SECURE_SYNC_UNARY_PING_PONG_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test: $(PROTOBUF_DEP) $(SECURE_SYNC_UNARY_PING_PONG_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(SECURE_SYNC_UNARY_PING_PONG_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test
+	$(Q) $(LDXX) $(LDFLAGS) $(SECURE_SYNC_UNARY_PING_PONG_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/secure_sync_unary_ping_pong_test
 
 endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/cpp/qps/secure_sync_unary_ping_pong_test.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+$(OBJDIR)/$(CONFIG)/test/cpp/qps/secure_sync_unary_ping_pong_test.o:  $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libgrpc++_core_stats.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_secure_sync_unary_ping_pong_test: $(SECURE_SYNC_UNARY_PING_PONG_TEST_OBJS:.o=.dep)
 
@@ -16598,6 +16855,49 @@ endif
 endif
 
 
+STATS_TEST_SRC = \
+    test/core/debug/stats_test.cc \
+
+STATS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(STATS_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/stats_test: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/stats_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/stats_test: $(PROTOBUF_DEP) $(STATS_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(STATS_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/stats_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/debug/stats_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_stats_test: $(STATS_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(STATS_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 STATUS_TEST_SRC = \
     test/cpp/util/status_test.cc \
 
@@ -19223,6 +19523,178 @@ ifneq ($(NO_DEPS),true)
 endif
 
 
+RESOLVER_COMPONENT_TEST_UNSECURE_SRC = \
+    test/cpp/naming/resolver_component_test.cc \
+
+RESOLVER_COMPONENT_TEST_UNSECURE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(RESOLVER_COMPONENT_TEST_UNSECURE_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/resolver_component_test_unsecure: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/resolver_component_test_unsecure: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/resolver_component_test_unsecure: $(PROTOBUF_DEP) $(RESOLVER_COMPONENT_TEST_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(RESOLVER_COMPONENT_TEST_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/resolver_component_test_unsecure
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/naming/resolver_component_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+
+deps_resolver_component_test_unsecure: $(RESOLVER_COMPONENT_TEST_UNSECURE_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(RESOLVER_COMPONENT_TEST_UNSECURE_OBJS:.o=.dep)
+endif
+endif
+
+
+RESOLVER_COMPONENT_TEST_SRC = \
+    test/cpp/naming/resolver_component_test.cc \
+
+RESOLVER_COMPONENT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(RESOLVER_COMPONENT_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/resolver_component_test: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/resolver_component_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/resolver_component_test: $(PROTOBUF_DEP) $(RESOLVER_COMPONENT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(RESOLVER_COMPONENT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/resolver_component_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/naming/resolver_component_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+
+deps_resolver_component_test: $(RESOLVER_COMPONENT_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(RESOLVER_COMPONENT_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
+RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_SRC = \
+    test/cpp/naming/resolver_component_tests_runner_invoker.cc \
+
+RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure: $(PROTOBUF_DEP) $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker_unsecure
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/naming/resolver_component_tests_runner_invoker.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+
+deps_resolver_component_tests_runner_invoker_unsecure: $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_UNSECURE_OBJS:.o=.dep)
+endif
+endif
+
+
+RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_SRC = \
+    test/cpp/naming/resolver_component_tests_runner_invoker.cc \
+
+RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker: $(PROTOBUF_DEP) $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/resolver_component_tests_runner_invoker
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/naming/resolver_component_tests_runner_invoker.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+
+deps_resolver_component_tests_runner_invoker: $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(RESOLVER_COMPONENT_TESTS_RUNNER_INVOKER_OBJS:.o=.dep)
+endif
+endif
+
+
 API_FUZZER_ONE_ENTRY_SRC = \
     test/core/end2end/fuzzers/api_fuzzer.c \
     test/core/util/one_corpus_entry_fuzzer.c \
@@ -19733,6 +20205,7 @@ src/cpp/common/secure_create_auth_context.cc: $(OPENSSL_DEP)
 src/cpp/ext/proto_server_reflection.cc: $(OPENSSL_DEP)
 src/cpp/ext/proto_server_reflection_plugin.cc: $(OPENSSL_DEP)
 src/cpp/server/secure_server_credentials.cc: $(OPENSSL_DEP)
+src/cpp/util/core_stats.cc: $(OPENSSL_DEP)
 src/cpp/util/error_details.cc: $(OPENSSL_DEP)
 src/csharp/ext/grpc_csharp_ext.c: $(OPENSSL_DEP)
 test/core/bad_client/bad_client.c: $(OPENSSL_DEP)
diff --git a/README.md b/README.md
index 995f877219..61479f34aa 100644
--- a/README.md
+++ b/README.md
@@ -27,14 +27,14 @@ Libraries in different languages may be in different states of development. We a
 
 | Language                | Source                              | Status  |
 |-------------------------|-------------------------------------|---------|
-| Shared C [core library] | [src/core](src/core)                | 1.0     |
-| C++                     | [src/cpp](src/cpp)                  | 1.0     |
-| Ruby                    | [src/ruby](src/ruby)                | 1.0     |
-| NodeJS                  | [src/node](src/node)                | 1.0     |
-| Python                  | [src/python](src/python)            | 1.0     |
-| PHP                     | [src/php](src/php)                  | 1.0     |
-| C#                      | [src/csharp](src/csharp)            | 1.0     |
-| Objective-C             | [src/objective-c](src/objective-c)  | 1.0     |
+| Shared C [core library] | [src/core](src/core)                | 1.6     |
+| C++                     | [src/cpp](src/cpp)                  | 1.6     |
+| Ruby                    | [src/ruby](src/ruby)                | 1.6     |
+| NodeJS                  | [src/node](src/node)                | 1.6     |
+| Python                  | [src/python](src/python)            | 1.6     |
+| PHP                     | [src/php](src/php)                  | 1.6     |
+| C#                      | [src/csharp](src/csharp)            | 1.6     |
+| Objective-C             | [src/objective-c](src/objective-c)  | 1.6     |
 
 Java source code is in the [grpc-java](http://github.com/grpc/grpc-java)
 repository. Go source code is in the
diff --git a/Rakefile b/Rakefile
index 66870581dd..1e8960eab8 100755
--- a/Rakefile
+++ b/Rakefile
@@ -80,10 +80,12 @@ task 'dlls' do
   grpc_config = ENV['GRPC_CONFIG'] || 'opt'
   verbose = ENV['V'] || '0'
 
-  env = 'CPPFLAGS="-D_WIN32_WINNT=0x600 -DUNICODE -D_UNICODE -Wno-unused-variable -Wno-unused-result -DCARES_STATICLIB" '
+  env = 'CPPFLAGS="-D_WIN32_WINNT=0x600 -DUNICODE -D_UNICODE -Wno-unused-variable -Wno-unused-result -DCARES_STATICLIB -Wno-error=conversion -Wno-incompatible-pointer-types -Wno-sign-compare -Wno-parentheses" '
   env += 'LDFLAGS=-static '
   env += 'SYSTEM=MINGW32 '
   env += 'EMBED_ZLIB=true '
+  env += 'EMBED_OPENSSL=true '
+  env += 'EMBED_CARES=true '
   env += 'BUILDDIR=/tmp '
   env += "V=#{verbose} "
   out = GrpcBuildConfig::CORE_WINDOWS_DLL
diff --git a/WORKSPACE b/WORKSPACE
index 82ea99f04b..bfb3a8c903 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -39,6 +39,11 @@ bind(
 )
 
 bind(
+    name = "gmock",
+    actual = "@submodule_gtest//:gmock",
+)
+
+bind(
     name = "benchmark",
     actual = "@submodule_benchmark//:benchmark",
 )
diff --git a/bazel/generate_cc.bzl b/bazel/generate_cc.bzl
index 7fffb58218..f88ee2f56f 100644
--- a/bazel/generate_cc.bzl
+++ b/bazel/generate_cc.bzl
@@ -55,7 +55,7 @@ def generate_cc_impl(ctx):
       arguments = arguments,
   )
 
-  return struct(files=set(out_files))
+  return struct(files=depset(out_files))
 
 _generate_cc = rule(
     attrs = {
diff --git a/bazel/grpc_build_system.bzl b/bazel/grpc_build_system.bzl
index 0295adb8ab..6cfed6b0e7 100644
--- a/bazel/grpc_build_system.bzl
+++ b/bazel/grpc_build_system.bzl
@@ -105,3 +105,35 @@ def grpc_sh_test(name, srcs, args = [], data = []):
     srcs = srcs,
     args = args,
     data = data)
+
+def grpc_sh_binary(name, srcs, data = []):
+  native.sh_test(
+    name = name,
+    srcs = srcs,
+    data = data)
+
+def grpc_py_binary(name, srcs, data = [], deps = []):
+  if name == "test_dns_server":
+    # TODO: allow running test_dns_server in oss bazel test suite
+    deps = []
+  native.py_binary(
+    name = name,
+    srcs = srcs,
+    data = data,
+    deps = deps)
+
+def grpc_package(name, visibility = "private", features = []):
+  if visibility == "tests":
+    visibility = ["//test:__subpackages__"]
+  elif visibility == "public":
+    visibility = ["//visibility:public"]
+  elif visibility == "private":
+    visibility = []
+  else:
+    fail("Unknown visibility " + visibility)
+
+  if len(visibility) != 0:
+    native.package(
+      default_visibility = visibility,
+      features = features
+    )
diff --git a/binding.gyp b/binding.gyp
index bbefd05c20..b4f9038210 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -667,9 +667,14 @@
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
         'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
         'src/core/lib/http/format_request.c',
         'src/core/lib/http/httpcli.c',
         'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
         'src/core/lib/iomgr/closure.c',
         'src/core/lib/iomgr/combiner.c',
         'src/core/lib/iomgr/endpoint.c',
@@ -678,8 +683,6 @@
         'src/core/lib/iomgr/endpoint_pair_windows.c',
         'src/core/lib/iomgr/error.c',
         'src/core/lib/iomgr/ev_epoll1_linux.c',
-        'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-        'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
         'src/core/lib/iomgr/ev_epollex_linux.c',
         'src/core/lib/iomgr/ev_epollsig_linux.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
@@ -892,8 +895,8 @@
         'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c',
         'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
         'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
-        'src/core/ext/filters/load_reporting/load_reporting.c',
-        'src/core/ext/filters/load_reporting/load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
         'src/core/ext/census/base_resources.c',
         'src/core/ext/census/context.c',
         'src/core/ext/census/gen/census.pb.c',
diff --git a/build.yaml b/build.yaml
index d70bbe39ca..9b5aacc4c8 100644
--- a/build.yaml
+++ b/build.yaml
@@ -12,7 +12,7 @@ settings:
   '#08': Use "-preN" suffixes to identify pre-release versions
   '#09': Per-language overrides are possible with (eg) ruby_version tag here
   '#10': See the expand_version.py for all the quirks here
-  core_version: 4.0.0-dev
+  core_version: 5.0.0-dev
   g_stands_for: gambit
   version: 1.7.0-dev
 filegroups:
@@ -126,6 +126,7 @@ filegroups:
   - include/grpc/support/string_util.h
   - include/grpc/support/subprocess.h
   - include/grpc/support/sync.h
+  - include/grpc/support/sync_custom.h
   - include/grpc/support/sync_generic.h
   - include/grpc/support/sync_posix.h
   - include/grpc/support/sync_windows.h
@@ -152,7 +153,6 @@ filegroups:
   - src/core/lib/support/stack_lockfree.h
   - src/core/lib/support/string.h
   - src/core/lib/support/string_windows.h
-  - src/core/lib/support/thd_internal.h
   - src/core/lib/support/time_precise.h
   - src/core/lib/support/tmpfile.h
   uses:
@@ -167,6 +167,7 @@ filegroups:
   - include/grpc/impl/codegen/gpr_types.h
   - include/grpc/impl/codegen/port_platform.h
   - include/grpc/impl/codegen/sync.h
+  - include/grpc/impl/codegen/sync_custom.h
   - include/grpc/impl/codegen/sync_generic.h
   - include/grpc/impl/codegen/sync_posix.h
   - include/grpc/impl/codegen/sync_windows.h
@@ -194,9 +195,14 @@ filegroups:
   - src/core/lib/compression/compression.c
   - src/core/lib/compression/message_compress.c
   - src/core/lib/compression/stream_compression.c
+  - src/core/lib/compression/stream_compression_gzip.c
+  - src/core/lib/compression/stream_compression_identity.c
+  - src/core/lib/debug/stats.c
+  - src/core/lib/debug/stats_data.c
   - src/core/lib/http/format_request.c
   - src/core/lib/http/httpcli.c
   - src/core/lib/http/parser.c
+  - src/core/lib/iomgr/call_combiner.c
   - src/core/lib/iomgr/closure.c
   - src/core/lib/iomgr/combiner.c
   - src/core/lib/iomgr/endpoint.c
@@ -205,8 +211,6 @@ filegroups:
   - src/core/lib/iomgr/endpoint_pair_windows.c
   - src/core/lib/iomgr/error.c
   - src/core/lib/iomgr/ev_epoll1_linux.c
-  - src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
-  - src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
   - src/core/lib/iomgr/ev_epollex_linux.c
   - src/core/lib/iomgr/ev_epollsig_linux.c
   - src/core/lib/iomgr/ev_poll_posix.c
@@ -344,9 +348,14 @@ filegroups:
   - src/core/lib/compression/algorithm_metadata.h
   - src/core/lib/compression/message_compress.h
   - src/core/lib/compression/stream_compression.h
+  - src/core/lib/compression/stream_compression_gzip.h
+  - src/core/lib/compression/stream_compression_identity.h
+  - src/core/lib/debug/stats.h
+  - src/core/lib/debug/stats_data.h
   - src/core/lib/http/format_request.h
   - src/core/lib/http/httpcli.h
   - src/core/lib/http/parser.h
+  - src/core/lib/iomgr/call_combiner.h
   - src/core/lib/iomgr/closure.h
   - src/core/lib/iomgr/combiner.h
   - src/core/lib/iomgr/endpoint.h
@@ -354,8 +363,6 @@ filegroups:
   - src/core/lib/iomgr/error.h
   - src/core/lib/iomgr/error_internal.h
   - src/core/lib/iomgr/ev_epoll1_linux.h
-  - src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h
-  - src/core/lib/iomgr/ev_epoll_thread_pool_linux.h
   - src/core/lib/iomgr/ev_epollex_linux.h
   - src/core/lib/iomgr/ev_epollsig_linux.h
   - src/core/lib/iomgr/ev_poll_posix.h
@@ -499,6 +506,7 @@ filegroups:
   - grpc_deadline_filter
 - name: grpc_codegen
   public_headers:
+  - include/grpc/impl/codegen/byte_buffer.h
   - include/grpc/impl/codegen/byte_buffer_reader.h
   - include/grpc/impl/codegen/compression_types.h
   - include/grpc/impl/codegen/connectivity_state.h
@@ -587,16 +595,6 @@ filegroups:
   uses:
   - grpc_base
   - grpc_client_channel
-- name: grpc_load_reporting
-  headers:
-  - src/core/ext/filters/load_reporting/load_reporting.h
-  - src/core/ext/filters/load_reporting/load_reporting_filter.h
-  src:
-  - src/core/ext/filters/load_reporting/load_reporting.c
-  - src/core/ext/filters/load_reporting/load_reporting_filter.c
-  plugin: grpc_load_reporting_plugin
-  uses:
-  - grpc_base
 - name: grpc_max_age_filter
   headers:
   - src/core/ext/filters/max_age/max_age_filter.h
@@ -709,6 +707,16 @@ filegroups:
   - src/core/ext/filters/workarounds/workaround_utils.c
   uses:
   - grpc_base
+- name: grpc_server_load_reporting
+  headers:
+  - src/core/ext/filters/load_reporting/server_load_reporting_filter.h
+  - src/core/ext/filters/load_reporting/server_load_reporting_plugin.h
+  src:
+  - src/core/ext/filters/load_reporting/server_load_reporting_filter.c
+  - src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
+  plugin: grpc_server_load_reporting_plugin
+  uses:
+  - grpc_base
 - name: grpc_test_util_base
   build: test
   headers:
@@ -745,6 +753,7 @@ filegroups:
   - test/core/util/trickle_endpoint.c
   deps:
   - gpr_test_util
+  - gpr
   uses:
   - grpc_base
   - grpc_client_channel
@@ -911,7 +920,7 @@ filegroups:
   - third_party/nanopb/pb_common.c
   - third_party/nanopb/pb_decode.c
   - third_party/nanopb/pb_encode.c
-  filegroups:
+  uses:
   - nanopb_headers
 - name: nanopb_headers
   headers:
@@ -919,6 +928,14 @@ filegroups:
   - third_party/nanopb/pb_common.h
   - third_party/nanopb/pb_decode.h
   - third_party/nanopb/pb_encode.h
+- name: transport_security_test_lib
+  build: test
+  headers:
+  - test/core/tsi/transport_security_test_lib.h
+  src:
+  - test/core/tsi/transport_security_test_lib.c
+  deps:
+  - grpc
 - name: tsi
   headers:
   - src/core/tsi/fake_transport_security.h
@@ -957,6 +974,7 @@ filegroups:
   public_headers:
   - include/grpc++/impl/codegen/async_stream.h
   - include/grpc++/impl/codegen/async_unary_call.h
+  - include/grpc++/impl/codegen/byte_buffer.h
   - include/grpc++/impl/codegen/call.h
   - include/grpc++/impl/codegen/call_hook.h
   - include/grpc++/impl/codegen/channel_interface.h
@@ -1152,7 +1170,7 @@ libs:
   - grpc_resolver_dns_native
   - grpc_resolver_sockaddr
   - grpc_resolver_fake
-  - grpc_load_reporting
+  - grpc_server_load_reporting
   - grpc_secure
   - census
   - grpc_max_age_filter
@@ -1178,7 +1196,7 @@ libs:
   - grpc_base
   - grpc_transport_cronet_client_secure
   - grpc_transport_chttp2_client_secure
-  - grpc_load_reporting
+  - grpc_server_load_reporting
   generate_plugin_registry: true
   platforms:
   - linux
@@ -1252,7 +1270,7 @@ libs:
   - grpc_resolver_dns_native
   - grpc_resolver_sockaddr
   - grpc_resolver_fake
-  - grpc_load_reporting
+  - grpc_server_load_reporting
   - grpc_lb_policy_grpclb
   - grpc_lb_policy_pick_first
   - grpc_lb_policy_round_robin
@@ -1318,6 +1336,16 @@ libs:
   - grpc++_codegen_base_src
   secure: check
   vs_project_guid: '{C187A093-A0FE-489D-A40A-6E33DE0F9FEB}'
+- name: grpc++_core_stats
+  build: private
+  language: c++
+  public_headers:
+  - src/cpp/util/core_stats.h
+  src:
+  - src/proto/grpc/core/stats.proto
+  - src/cpp/util/core_stats.cc
+  deps:
+  - grpc++
 - name: grpc++_cronet
   build: all
   language: c++
@@ -1660,6 +1688,7 @@ libs:
   deps:
   - grpc_test_util
   - grpc++_test_util
+  - grpc++_core_stats
   - grpc++
   - grpc
 - name: grpc_csharp_ext
@@ -2029,6 +2058,21 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
+- name: fake_transport_security_test
+  build: test
+  language: c
+  src:
+  - test/core/tsi/fake_transport_security_test.c
+  deps:
+  - gpr_test_util
+  - gpr
+  - grpc
+  filegroups:
+  - transport_security_test_lib
+  platforms:
+  - linux
+  - posix
+  - mac
 - name: fd_conservation_posix_test
   build: test
   language: c
@@ -2332,6 +2376,16 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
+- name: grpc_channel_stack_builder_test
+  build: test
+  language: c
+  src:
+  - test/core/channel/channel_stack_builder_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: grpc_channel_stack_test
   build: test
   language: c
@@ -3100,6 +3154,21 @@ targets:
   corpus_dirs:
   - test/core/security/corpus/ssl_server_corpus
   maxlen: 2048
+- name: ssl_transport_security_test
+  build: test
+  language: c
+  src:
+  - test/core/tsi/ssl_transport_security_test.c
+  deps:
+  - gpr_test_util
+  - gpr
+  - grpc
+  filegroups:
+  - transport_security_test_lib
+  platforms:
+  - linux
+  - posix
+  - mac
 - name: status_conversion_test
   build: test
   language: c
@@ -3558,6 +3627,8 @@ targets:
 - name: bm_fullstack_streaming_ping_pong
   build: test
   language: c++
+  headers:
+  - test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h
   src:
   - test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
   deps:
@@ -3583,6 +3654,8 @@ targets:
 - name: bm_fullstack_streaming_pump
   build: test
   language: c++
+  headers:
+  - test/cpp/microbenchmarks/fullstack_streaming_pump.h
   src:
   - test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
   deps:
@@ -3619,6 +3692,7 @@ targets:
   - grpc_unsecure
   - gpr_test_util
   - gpr
+  - grpc++_test_config
   args:
   - --benchmark_min_time=0
   defaults: benchmark
@@ -3633,6 +3707,8 @@ targets:
 - name: bm_fullstack_unary_ping_pong
   build: test
   language: c++
+  headers:
+  - test/cpp/microbenchmarks/fullstack_unary_ping_pong.h
   src:
   - test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
   deps:
@@ -3790,6 +3866,7 @@ targets:
   - src/proto/grpc/testing/stats.proto
   - test/cpp/codegen/codegen_test_full.cc
   deps:
+  - grpc++_core_stats
   - grpc++
   - grpc
   - gpr
@@ -3807,6 +3884,7 @@ targets:
   - src/proto/grpc/testing/stats.proto
   - test/cpp/codegen/codegen_test_minimal.cc
   deps:
+  - grpc++_core_stats
   - grpc
   - gpr
   filegroups:
@@ -4297,6 +4375,7 @@ targets:
   - test/cpp/qps/qps_json_driver.cc
   deps:
   - qps
+  - grpc++_core_stats
   - grpc++_test_util
   - grpc_test_util
   - grpc++
@@ -4312,6 +4391,7 @@ targets:
   - test/cpp/qps/qps_openloop_test.cc
   deps:
   - qps
+  - grpc++_core_stats
   - grpc++_test_util
   - grpc_test_util
   - grpc++
@@ -4334,6 +4414,7 @@ targets:
   - test/cpp/qps/worker.cc
   deps:
   - qps
+  - grpc++_core_stats
   - grpc++_test_util
   - grpc_test_util
   - grpc++
@@ -4397,6 +4478,7 @@ targets:
   - test/cpp/qps/secure_sync_unary_ping_pong_test.cc
   deps:
   - qps
+  - grpc++_core_stats
   - grpc++_test_util
   - grpc_test_util
   - grpc++
@@ -4509,6 +4591,18 @@ targets:
   - grpc
   - gpr_test_util
   - gpr
+- name: stats_test
+  gtest: true
+  build: test
+  language: c++
+  src:
+  - test/core/debug/stats_test.cc
+  deps:
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: status_test
   build: test
   language: c++
@@ -4754,7 +4848,8 @@ configs:
       UBSAN_OPTIONS: halt_on_error=1:print_stacktrace=1:suppressions=tools/ubsan_suppressions.txt
 defaults:
   ares:
-    CFLAGS: -Wno-sign-conversion $(if $(subst MINGW32,,$(SYSTEM)),-Wno-invalid-source-encoding,)
+    CFLAGS: -Wno-sign-conversion $(if $(subst Darwin,,$(SYSTEM)),,-Wno-shorten-64-to-32)
+      $(if $(subst MINGW32,,$(SYSTEM)),-Wno-invalid-source-encoding,)
     CPPFLAGS: -Ithird_party/cares -Ithird_party/cares/cares $(if $(subst Linux,,$(SYSTEM)),,-Ithird_party/cares/config_linux)
       $(if $(subst Darwin,,$(SYSTEM)),,-Ithird_party/cares/config_darwin) -fvisibility=hidden
       -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX $(if $(subst
diff --git a/build_config.rb b/build_config.rb
index 7159c6e509..3dc31d4ce3 100644
--- a/build_config.rb
+++ b/build_config.rb
@@ -13,5 +13,5 @@
 # limitations under the License.
 
 module GrpcBuildConfig
-  CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-4.dll'
+  CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-5.dll'
 end
diff --git a/tools/cmake/gRPCConfig.cmake.in b/cmake/gRPCConfig.cmake.in
index 1a0fa6a462..1a0fa6a462 100644
--- a/tools/cmake/gRPCConfig.cmake.in
+++ b/cmake/gRPCConfig.cmake.in
diff --git a/tools/cmake/gRPCConfigVersion.cmake.in b/cmake/gRPCConfigVersion.cmake.in
index f3c19fd403..f3c19fd403 100644
--- a/tools/cmake/gRPCConfigVersion.cmake.in
+++ b/cmake/gRPCConfigVersion.cmake.in
diff --git a/config.m4 b/config.m4
index f6f8531b2f..72f8a1e710 100644
--- a/config.m4
+++ b/config.m4
@@ -12,7 +12,7 @@ if test "$PHP_GRPC" != "no"; then
   LIBS="-lpthread $LIBS"
 
   CFLAGS="-Wall -Werror -Wno-parentheses-equality -Wno-unused-value -std=c11"
-  CXXFLAGS="-std=c++11"
+  CXXFLAGS="-std=c++11 -fno-exceptions -fno-rtti"
   GRPC_SHARED_LIBADD="-lpthread $GRPC_SHARED_LIBADD"
   PHP_REQUIRE_CXX()
   PHP_ADD_LIBRARY(pthread)
@@ -96,9 +96,14 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
     src/core/lib/compression/stream_compression.c \
+    src/core/lib/compression/stream_compression_gzip.c \
+    src/core/lib/compression/stream_compression_identity.c \
+    src/core/lib/debug/stats.c \
+    src/core/lib/debug/stats_data.c \
     src/core/lib/http/format_request.c \
     src/core/lib/http/httpcli.c \
     src/core/lib/http/parser.c \
+    src/core/lib/iomgr/call_combiner.c \
     src/core/lib/iomgr/closure.c \
     src/core/lib/iomgr/combiner.c \
     src/core/lib/iomgr/endpoint.c \
@@ -107,8 +112,6 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll1_linux.c \
-    src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-    src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
     src/core/lib/iomgr/ev_epollex_linux.c \
     src/core/lib/iomgr/ev_epollsig_linux.c \
     src/core/lib/iomgr/ev_poll_posix.c \
@@ -321,8 +324,8 @@ if test "$PHP_GRPC" != "no"; then
     src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c \
     src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c \
     src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c \
-    src/core/ext/filters/load_reporting/load_reporting.c \
-    src/core/ext/filters/load_reporting/load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_filter.c \
+    src/core/ext/filters/load_reporting/server_load_reporting_plugin.c \
     src/core/ext/census/base_resources.c \
     src/core/ext/census/context.c \
     src/core/ext/census/gen/census.pb.c \
diff --git a/config.w32 b/config.w32
index 1d1a0a4b63..5347baedc2 100644
--- a/config.w32
+++ b/config.w32
@@ -73,9 +73,14 @@ if (PHP_GRPC != "no") {
     "src\\core\\lib\\compression\\compression.c " +
     "src\\core\\lib\\compression\\message_compress.c " +
     "src\\core\\lib\\compression\\stream_compression.c " +
+    "src\\core\\lib\\compression\\stream_compression_gzip.c " +
+    "src\\core\\lib\\compression\\stream_compression_identity.c " +
+    "src\\core\\lib\\debug\\stats.c " +
+    "src\\core\\lib\\debug\\stats_data.c " +
     "src\\core\\lib\\http\\format_request.c " +
     "src\\core\\lib\\http\\httpcli.c " +
     "src\\core\\lib\\http\\parser.c " +
+    "src\\core\\lib\\iomgr\\call_combiner.c " +
     "src\\core\\lib\\iomgr\\closure.c " +
     "src\\core\\lib\\iomgr\\combiner.c " +
     "src\\core\\lib\\iomgr\\endpoint.c " +
@@ -84,8 +89,6 @@ if (PHP_GRPC != "no") {
     "src\\core\\lib\\iomgr\\endpoint_pair_windows.c " +
     "src\\core\\lib\\iomgr\\error.c " +
     "src\\core\\lib\\iomgr\\ev_epoll1_linux.c " +
-    "src\\core\\lib\\iomgr\\ev_epoll_limited_pollers_linux.c " +
-    "src\\core\\lib\\iomgr\\ev_epoll_thread_pool_linux.c " +
     "src\\core\\lib\\iomgr\\ev_epollex_linux.c " +
     "src\\core\\lib\\iomgr\\ev_epollsig_linux.c " +
     "src\\core\\lib\\iomgr\\ev_poll_posix.c " +
@@ -298,8 +301,8 @@ if (PHP_GRPC != "no") {
     "src\\core\\ext\\filters\\client_channel\\resolver\\dns\\c_ares\\grpc_ares_wrapper_fallback.c " +
     "src\\core\\ext\\filters\\client_channel\\resolver\\dns\\native\\dns_resolver.c " +
     "src\\core\\ext\\filters\\client_channel\\resolver\\sockaddr\\sockaddr_resolver.c " +
-    "src\\core\\ext\\filters\\load_reporting\\load_reporting.c " +
-    "src\\core\\ext\\filters\\load_reporting\\load_reporting_filter.c " +
+    "src\\core\\ext\\filters\\load_reporting\\server_load_reporting_filter.c " +
+    "src\\core\\ext\\filters\\load_reporting\\server_load_reporting_plugin.c " +
     "src\\core\\ext\\census\\base_resources.c " +
     "src\\core\\ext\\census\\context.c " +
     "src\\core\\ext\\census\\gen\\census.pb.c " +
diff --git a/doc/c-style-guide.md b/doc/c-style-guide.md
index 369bd56a46..2cfa41dd9e 100644
--- a/doc/c-style-guide.md
+++ b/doc/c-style-guide.md
@@ -32,14 +32,14 @@ Header Files
   # endif
   ```
 - Header files should be self-contained and end in .h.
-- All header files should have a #define guard to prevent multiple inclusion.
+- All header files should have a `#define` guard to prevent multiple inclusion.
   To guarantee uniqueness they should be based on the file's path.
 
   For public headers: `include/grpc/grpc.h` → `GRPC_GRPC_H`
 
   For private headers:
-  `src/core/channel/channel_stack.h` →
-  `GRPC_INTERNAL_CORE_CHANNEL_CHANNEL_STACK_H`
+  `src/core/lib/channel/channel_stack.h` →
+  `GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H`
 
 Variable Initialization
 -----------------------
@@ -72,8 +72,16 @@ Symbol Names
 
 - Non-static functions must be prefixed by `grpc_`
 - Static functions must *not* be prefixed by `grpc_`
+- Typenames of `struct`s , `union`s, and `enum`s must be prefixed by `grpc_` if
+  they are declared in a header file. They must not be prefixed by `grpc_` if
+  they are declared in a source file.
 - Enumeration values and `#define` names must be uppercase. All other values
   must be lowercase.
+- Enumeration values or `#define` names defined in a header file must be
+  prefixed with `GRPC_` (except for `#define` macros that are being used to
+  substitute functions; those should follow the general rules for
+  functions). Enumeration values or `#define`s defined in source files must not
+  be prefixed with `GRPC_`.
 - Multiple word identifiers use underscore as a delimiter, *never* camel
   case. E.g. `variable_name`.
 
diff --git a/doc/compression.md b/doc/compression.md
index ee22bc3f12..bf38e3bd53 100644
--- a/doc/compression.md
+++ b/doc/compression.md
@@ -52,8 +52,8 @@ by the client WILL result in an `INTERNAL` error status on the client side.
 
 Note that a peer MAY choose to not disclose all the encodings it supports.
 However, if it receives a message compressed in an undisclosed but supported
-encoding, it MUST include said encoding in the response's `grpc-accept-encoding
-h`eader.
+encoding, it MUST include said encoding in the response's `grpc-accept-encoding`
+header.
 
 For every message a server is requested to compress using an algorithm it knows
 the client doesn't support (as indicated by the last `grpc-accept-encoding`
diff --git a/doc/environment_variables.md b/doc/environment_variables.md
index a2cde92736..f90f1d5b10 100644
--- a/doc/environment_variables.md
+++ b/doc/environment_variables.md
@@ -39,6 +39,7 @@ some configuration as environment variables that can be set.
   gRPC C core is processing requests via debug logs. Available tracers include:
   - api - traces api calls to the C core
   - bdp_estimator - traces behavior of bdp estimation logic
+  - call_combiner - traces call combiner state
   - call_error - traces the possible errors contributing to final call status
   - channel - traces operations on the C core channel stack
   - client_channel - traces client channel activity, including resolver
@@ -47,7 +48,9 @@ some configuration as environment variables that can be set.
   - compression - traces compression operations
   - connectivity_state - traces connectivity state changes to channels
   - channel_stack_builder - traces information about channel stacks being built
+  - executor - traces grpc's internal thread pool ('the executor')
   - http - traces state in the http2 transport engine
+  - http2_stream_state - traces all http2 stream state mutations.
   - http1 - traces HTTP/1.x operations performed by gRPC
   - inproc - traces the in-process transport
   - flowctl - traces http2 flow control
@@ -113,3 +116,11 @@ some configuration as environment variables that can be set.
   - native (default)- a DNS resolver based around getaddrinfo(), creates a new thread to
     perform name resolution
   - ares - a DNS resolver based around the c-ares library
+
+* GRPC_DISABLE_CHANNEL_CONNECTIVITY_WATCHER
+  The channel connectivity watcher uses one extra thread to check the channel
+  state every 500 ms on the client side. It can help reconnect disconnected
+  client channels (mostly due to idleness), so that the next RPC on this channel
+  won't fail. Set to 1 to turn off this watcher and save a thread. Please note
+  this is a temporary work-around, it will be removed in the future once we have
+  support for automatically reestablishing failed connections.
diff --git a/doc/service_config.md b/doc/service_config.md
index 99d985f3bf..0abbd7f324 100644
--- a/doc/service_config.md
+++ b/doc/service_config.md
@@ -24,10 +24,7 @@ The service config is a JSON string of the following form:
   // opposed to backend addresses), gRPC will use grpclb (see
   // https://github.com/grpc/grpc/blob/master/doc/load-balancing.md),
   // regardless of what LB policy is requested either here or via the
-  // client API.  However, if the resolver returns at least one backend
-  // address in addition to the balancer address(es), the client may fall
-  // back to the requested policy if it is unable to reach any of the
-  // grpclb load balancers.
+  // client API.
   'loadBalancingPolicy': string,
 
   // Per-method configuration.  Optional.
diff --git a/doc/workarounds.md b/doc/workarounds.md
index bc511860f8..9b7f2f1350 100644
--- a/doc/workarounds.md
+++ b/doc/workarounds.md
@@ -1,4 +1,4 @@
-# gRPC Server Backward Compatibility Issues and Workarounds Manageent
+# gRPC Server Backward Compatibility Issues and Workarounds Management
 
 ## Introduction
 This document lists the workarounds implemented on gRPC servers for record and reference when users need to enable a certain workaround.
diff --git a/examples/cpp/helloworld/CMakeLists.txt b/examples/cpp/helloworld/CMakeLists.txt
index 8f098c91a6..71a8db4f24 100644
--- a/examples/cpp/helloworld/CMakeLists.txt
+++ b/examples/cpp/helloworld/CMakeLists.txt
@@ -2,7 +2,11 @@
 cmake_minimum_required(VERSION 2.8)

 

 # Project

-project(HelloWorld CXX)

+project(HelloWorld C CXX)

+

+if(NOT MSVC)

+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

+endif()

 

 # Protobuf

 set(protobuf_MODULE_COMPATIBLE TRUE)

diff --git a/examples/cpp/helloworld/greeter_async_client.cc b/examples/cpp/helloworld/greeter_async_client.cc
index 64da044ea6..ddf6c1aaf3 100644
--- a/examples/cpp/helloworld/greeter_async_client.cc
+++ b/examples/cpp/helloworld/greeter_async_client.cc
@@ -60,11 +60,15 @@ class GreeterClient {
     // Storage for the status of the RPC upon completion.
     Status status;
 
-    // stub_->AsyncSayHello() performs the RPC call, returning an instance we
-    // store in "rpc". Because we are using the asynchronous API, we need to
-    // hold on to the "rpc" instance in order to get updates on the ongoing RPC.
+    // stub_->PrepareAsyncSayHello() creates an RPC object, returning
+    // an instance to store in "call" but does not actually start the RPC
+    // Because we are using the asynchronous API, we need to hold on to
+    // the "call" instance in order to get updates on the ongoing RPC.
     std::unique_ptr<ClientAsyncResponseReader<HelloReply> > rpc(
-        stub_->AsyncSayHello(&context, request, &cq));
+        stub_->PrepareAsyncSayHello(&context, request, &cq));
+
+    // StartCall initiates the RPC call
+    rpc->StartCall();
 
     // Request that, upon completion of the RPC, "reply" be updated with the
     // server's response; "status" with the indication of whether the operation
diff --git a/examples/cpp/helloworld/greeter_async_client2.cc b/examples/cpp/helloworld/greeter_async_client2.cc
index 4192546bef..3154e84d85 100644
--- a/examples/cpp/helloworld/greeter_async_client2.cc
+++ b/examples/cpp/helloworld/greeter_async_client2.cc
@@ -49,11 +49,15 @@ class GreeterClient {
         // Call object to store rpc data
         AsyncClientCall* call = new AsyncClientCall;
 
-        // stub_->AsyncSayHello() performs the RPC call, returning an instance to
-        // store in "call". Because we are using the asynchronous API, we need to
-        // hold on to the "call" instance in order to get updates on the ongoing RPC.
-        call->response_reader = stub_->AsyncSayHello(&call->context, request, &cq_);
-
+        // stub_->PrepareAsyncSayHello() creates an RPC object, returning
+        // an instance to store in "call" but does not actually start the RPC
+        // Because we are using the asynchronous API, we need to hold on to
+        // the "call" instance in order to get updates on the ongoing RPC.
+        call->response_reader =
+            stub_->PrepareAsyncSayHello(&call->context, request, &cq_);
+
+        // StartCall initiates the RPC call
+        call->response_reader->StartCall();
 
         // Request that, upon completion of the RPC, "reply" be updated with the
         // server's response; "status" with the indication of whether the operation
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 82cb4bc416..c76b9a3f4b 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -118,6 +118,7 @@ Pod::Spec.new do |s|
                       'include/grpc/support/string_util.h',
                       'include/grpc/support/subprocess.h',
                       'include/grpc/support/sync.h',
+                      'include/grpc/support/sync_custom.h',
                       'include/grpc/support/sync_generic.h',
                       'include/grpc/support/sync_posix.h',
                       'include/grpc/support/sync_windows.h',
@@ -136,9 +137,11 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
                       'include/grpc/impl/codegen/sync.h',
+                      'include/grpc/impl/codegen/sync_custom.h',
                       'include/grpc/impl/codegen/sync_generic.h',
                       'include/grpc/impl/codegen/sync_posix.h',
                       'include/grpc/impl/codegen/sync_windows.h',
+                      'include/grpc/impl/codegen/byte_buffer.h',
                       'include/grpc/impl/codegen/byte_buffer_reader.h',
                       'include/grpc/impl/codegen/compression_types.h',
                       'include/grpc/impl/codegen/connectivity_state.h',
@@ -155,6 +158,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
                       'include/grpc/impl/codegen/sync.h',
+                      'include/grpc/impl/codegen/sync_custom.h',
                       'include/grpc/impl/codegen/sync_generic.h',
                       'include/grpc/impl/codegen/sync_posix.h',
                       'include/grpc/impl/codegen/sync_windows.h',
@@ -195,7 +199,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/support/stack_lockfree.h',
                       'src/core/lib/support/string.h',
                       'src/core/lib/support/string_windows.h',
-                      'src/core/lib/support/thd_internal.h',
                       'src/core/lib/support/time_precise.h',
                       'src/core/lib/support/tmpfile.h',
                       'src/core/lib/profiling/basic_timers.c',
@@ -327,9 +330,14 @@ Pod::Spec.new do |s|
                       'src/core/lib/compression/algorithm_metadata.h',
                       'src/core/lib/compression/message_compress.h',
                       'src/core/lib/compression/stream_compression.h',
+                      'src/core/lib/compression/stream_compression_gzip.h',
+                      'src/core/lib/compression/stream_compression_identity.h',
+                      'src/core/lib/debug/stats.h',
+                      'src/core/lib/debug/stats_data.h',
                       'src/core/lib/http/format_request.h',
                       'src/core/lib/http/httpcli.h',
                       'src/core/lib/http/parser.h',
+                      'src/core/lib/iomgr/call_combiner.h',
                       'src/core/lib/iomgr/closure.h',
                       'src/core/lib/iomgr/combiner.h',
                       'src/core/lib/iomgr/endpoint.h',
@@ -337,8 +345,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/error.h',
                       'src/core/lib/iomgr/error_internal.h',
                       'src/core/lib/iomgr/ev_epoll1_linux.h',
-                      'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h',
-                      'src/core/lib/iomgr/ev_epoll_thread_pool_linux.h',
                       'src/core/lib/iomgr/ev_epollex_linux.h',
                       'src/core/lib/iomgr/ev_epollsig_linux.h',
                       'src/core/lib/iomgr/ev_poll_posix.h',
@@ -440,8 +446,8 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h',
                       'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h',
                       'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h',
-                      'src/core/ext/filters/load_reporting/load_reporting.h',
-                      'src/core/ext/filters/load_reporting/load_reporting_filter.h',
+                      'src/core/ext/filters/load_reporting/server_load_reporting_filter.h',
+                      'src/core/ext/filters/load_reporting/server_load_reporting_plugin.h',
                       'src/core/ext/census/aggregation.h',
                       'src/core/ext/census/base_resources.h',
                       'src/core/ext/census/census_interface.h',
@@ -475,9 +481,14 @@ Pod::Spec.new do |s|
                       'src/core/lib/compression/compression.c',
                       'src/core/lib/compression/message_compress.c',
                       'src/core/lib/compression/stream_compression.c',
+                      'src/core/lib/compression/stream_compression_gzip.c',
+                      'src/core/lib/compression/stream_compression_identity.c',
+                      'src/core/lib/debug/stats.c',
+                      'src/core/lib/debug/stats_data.c',
                       'src/core/lib/http/format_request.c',
                       'src/core/lib/http/httpcli.c',
                       'src/core/lib/http/parser.c',
+                      'src/core/lib/iomgr/call_combiner.c',
                       'src/core/lib/iomgr/closure.c',
                       'src/core/lib/iomgr/combiner.c',
                       'src/core/lib/iomgr/endpoint.c',
@@ -486,8 +497,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/endpoint_pair_windows.c',
                       'src/core/lib/iomgr/error.c',
                       'src/core/lib/iomgr/ev_epoll1_linux.c',
-                      'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-                      'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
                       'src/core/lib/iomgr/ev_epollex_linux.c',
                       'src/core/lib/iomgr/ev_epollsig_linux.c',
                       'src/core/lib/iomgr/ev_poll_posix.c',
@@ -697,8 +706,8 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c',
                       'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
                       'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
-                      'src/core/ext/filters/load_reporting/load_reporting.c',
-                      'src/core/ext/filters/load_reporting/load_reporting_filter.c',
+                      'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+                      'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
                       'src/core/ext/census/base_resources.c',
                       'src/core/ext/census/context.c',
                       'src/core/ext/census/gen/census.pb.c',
@@ -735,7 +744,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/support/stack_lockfree.h',
                               'src/core/lib/support/string.h',
                               'src/core/lib/support/string_windows.h',
-                              'src/core/lib/support/thd_internal.h',
                               'src/core/lib/support/time_precise.h',
                               'src/core/lib/support/tmpfile.h',
                               'src/core/ext/transport/chttp2/transport/bin_decoder.h',
@@ -821,9 +829,14 @@ Pod::Spec.new do |s|
                               'src/core/lib/compression/algorithm_metadata.h',
                               'src/core/lib/compression/message_compress.h',
                               'src/core/lib/compression/stream_compression.h',
+                              'src/core/lib/compression/stream_compression_gzip.h',
+                              'src/core/lib/compression/stream_compression_identity.h',
+                              'src/core/lib/debug/stats.h',
+                              'src/core/lib/debug/stats_data.h',
                               'src/core/lib/http/format_request.h',
                               'src/core/lib/http/httpcli.h',
                               'src/core/lib/http/parser.h',
+                              'src/core/lib/iomgr/call_combiner.h',
                               'src/core/lib/iomgr/closure.h',
                               'src/core/lib/iomgr/combiner.h',
                               'src/core/lib/iomgr/endpoint.h',
@@ -831,8 +844,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/iomgr/error.h',
                               'src/core/lib/iomgr/error_internal.h',
                               'src/core/lib/iomgr/ev_epoll1_linux.h',
-                              'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h',
-                              'src/core/lib/iomgr/ev_epoll_thread_pool_linux.h',
                               'src/core/lib/iomgr/ev_epollex_linux.h',
                               'src/core/lib/iomgr/ev_epollsig_linux.h',
                               'src/core/lib/iomgr/ev_poll_posix.h',
@@ -934,8 +945,8 @@ Pod::Spec.new do |s|
                               'src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h',
                               'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h',
                               'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h',
-                              'src/core/ext/filters/load_reporting/load_reporting.h',
-                              'src/core/ext/filters/load_reporting/load_reporting_filter.h',
+                              'src/core/ext/filters/load_reporting/server_load_reporting_filter.h',
+                              'src/core/ext/filters/load_reporting/server_load_reporting_plugin.h',
                               'src/core/ext/census/aggregation.h',
                               'src/core/ext/census/base_resources.h',
                               'src/core/ext/census/census_interface.h',
@@ -987,6 +998,7 @@ Pod::Spec.new do |s|
                       'test/core/end2end/end2end_tests.{c,h}',
                       'test/core/end2end/end2end_test_utils.c',
                       'test/core/end2end/tests/*.{c,h}',
+                      'test/core/end2end/fixtures/*.h',
                       'test/core/end2end/data/*.{c,h}',
                       'test/core/util/debugger_macros.{c,h}',
                       'test/core/util/test_config.{c,h}',
diff --git a/gRPC.podspec b/gRPC.podspec
index ba90149dd6..79315e46f3 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -40,12 +40,9 @@ Pod::Spec.new do |s|
   s.header_dir = name
 
   src_dir = 'src/objective-c/GRPCClient'
-  s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
-  s.private_header_files = "#{src_dir}/private/*.h"
-  s.header_mappings_dir = "#{src_dir}"
 
-  s.dependency 'gRPC-Core', version
   s.dependency 'gRPC-RxLibrary', version
+  s.default_subspec = 'Main'
 
   # Certificates, to be able to establish TLS connections:
   s.resource_bundles = { 'gRPCCertificates' => ['etc/roots.pem'] }
@@ -54,4 +51,22 @@ Pod::Spec.new do |s|
     # This is needed by all pods that depend on gRPC-RxLibrary:
     'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
   }
+
+  s.subspec 'Main' do |ss|
+    ss.header_mappings_dir = "#{src_dir}"
+
+    ss.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
+    ss.exclude_files = "#{src_dir}/GRPCCall+GID.{h,m}"
+    ss.private_header_files = "#{src_dir}/private/*.h"
+
+    ss.dependency 'gRPC-Core', version
+  end
+
+  s.subspec 'GID' do |ss|
+    ss.header_mappings_dir = "#{src_dir}"
+
+    ss.source_files = "#{src_dir}/GRPCCall+GID.{h,m}"
+
+    ss.dependency 'Google/SignIn'
+  end
 end
diff --git a/grpc.def b/grpc.def
index af4bd1674f..558be60c3c 100644
--- a/grpc.def
+++ b/grpc.def
@@ -1,14 +1,4 @@
 EXPORTS
-    grpc_raw_byte_buffer_create
-    grpc_raw_compressed_byte_buffer_create
-    grpc_byte_buffer_copy
-    grpc_byte_buffer_length
-    grpc_byte_buffer_destroy
-    grpc_byte_buffer_reader_init
-    grpc_byte_buffer_reader_destroy
-    grpc_byte_buffer_reader_next
-    grpc_byte_buffer_reader_readall
-    grpc_raw_byte_buffer_from_reader
     census_initialize
     census_shutdown
     census_supported
@@ -39,11 +29,14 @@ EXPORTS
     census_record_values
     grpc_compression_algorithm_parse
     grpc_compression_algorithm_name
+    grpc_stream_compression_algorithm_name
     grpc_compression_algorithm_for_level
+    grpc_stream_compression_algorithm_for_level
     grpc_compression_options_init
     grpc_compression_options_enable_algorithm
     grpc_compression_options_disable_algorithm
     grpc_compression_options_is_algorithm_enabled
+    grpc_compression_options_is_stream_compression_algorithm_enabled
     grpc_metadata_array_init
     grpc_metadata_array_destroy
     grpc_call_details_init
@@ -62,11 +55,13 @@ EXPORTS
     grpc_completion_queue_shutdown
     grpc_completion_queue_destroy
     grpc_alarm_create
+    grpc_alarm_set
     grpc_alarm_cancel
     grpc_alarm_destroy
     grpc_channel_check_connectivity_state
     grpc_channel_num_external_connectivity_watchers
     grpc_channel_watch_connectivity_state
+    grpc_channel_support_connectivity_watcher
     grpc_channel_create_call
     grpc_channel_ping
     grpc_channel_register_call
@@ -140,6 +135,16 @@ EXPORTS
     grpc_server_add_secure_http2_port
     grpc_call_set_credentials
     grpc_server_credentials_set_auth_metadata_processor
+    grpc_raw_byte_buffer_create
+    grpc_raw_compressed_byte_buffer_create
+    grpc_byte_buffer_copy
+    grpc_byte_buffer_length
+    grpc_byte_buffer_destroy
+    grpc_byte_buffer_reader_init
+    grpc_byte_buffer_reader_destroy
+    grpc_byte_buffer_reader_next
+    grpc_byte_buffer_reader_readall
+    grpc_raw_byte_buffer_from_reader
     grpc_slice_ref
     grpc_slice_unref
     grpc_slice_copy
diff --git a/grpc.gemspec b/grpc.gemspec
index f04a14167b..acf71cab78 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -29,16 +29,17 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'google-protobuf', '~> 3.1'
   s.add_dependency 'googleauth',      '~> 0.5.1'
+  s.add_dependency 'googleapis-common-protos-types', '~> 1.0.0'
 
   s.add_development_dependency 'bundler',            '~> 1.9'
   s.add_development_dependency 'facter',             '~> 2.4'
   s.add_development_dependency 'logging',            '~> 2.0'
-  s.add_development_dependency 'simplecov',          '~> 0.9'
-  s.add_development_dependency 'rake',               '~> 10.4'
+  s.add_development_dependency 'simplecov',          '~> 0.14.1'
+  s.add_development_dependency 'rake',               '~> 12.0'
   s.add_development_dependency 'rake-compiler',      '~> 1.0'
   s.add_development_dependency 'rake-compiler-dock', '~> 0.5.1'
-  s.add_development_dependency 'rspec',              '~> 3.2'
-  s.add_development_dependency 'rubocop',            '~> 0.30.0'
+  s.add_development_dependency 'rspec',              '~> 3.6'
+  s.add_development_dependency 'rubocop',            '~> 0.49.1'
   s.add_development_dependency 'signet',             '~> 0.7.0'
 
   s.extensions = %w(src/ruby/ext/grpc/extconf.rb)
@@ -59,6 +60,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/support/string_util.h )
   s.files += %w( include/grpc/support/subprocess.h )
   s.files += %w( include/grpc/support/sync.h )
+  s.files += %w( include/grpc/support/sync_custom.h )
   s.files += %w( include/grpc/support/sync_generic.h )
   s.files += %w( include/grpc/support/sync_posix.h )
   s.files += %w( include/grpc/support/sync_windows.h )
@@ -77,6 +79,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
   s.files += %w( include/grpc/impl/codegen/sync.h )
+  s.files += %w( include/grpc/impl/codegen/sync_custom.h )
   s.files += %w( include/grpc/impl/codegen/sync_generic.h )
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
   s.files += %w( include/grpc/impl/codegen/sync_windows.h )
@@ -95,7 +98,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/support/stack_lockfree.h )
   s.files += %w( src/core/lib/support/string.h )
   s.files += %w( src/core/lib/support/string_windows.h )
-  s.files += %w( src/core/lib/support/thd_internal.h )
   s.files += %w( src/core/lib/support/time_precise.h )
   s.files += %w( src/core/lib/support/tmpfile.h )
   s.files += %w( src/core/lib/profiling/basic_timers.c )
@@ -144,6 +146,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/support/tmpfile_posix.c )
   s.files += %w( src/core/lib/support/tmpfile_windows.c )
   s.files += %w( src/core/lib/support/wrap_memcpy.c )
+  s.files += %w( include/grpc/impl/codegen/byte_buffer.h )
   s.files += %w( include/grpc/impl/codegen/byte_buffer_reader.h )
   s.files += %w( include/grpc/impl/codegen/compression_types.h )
   s.files += %w( include/grpc/impl/codegen/connectivity_state.h )
@@ -160,6 +163,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
   s.files += %w( include/grpc/impl/codegen/sync.h )
+  s.files += %w( include/grpc/impl/codegen/sync_custom.h )
   s.files += %w( include/grpc/impl/codegen/sync_generic.h )
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
   s.files += %w( include/grpc/impl/codegen/sync_windows.h )
@@ -259,9 +263,14 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/compression/algorithm_metadata.h )
   s.files += %w( src/core/lib/compression/message_compress.h )
   s.files += %w( src/core/lib/compression/stream_compression.h )
+  s.files += %w( src/core/lib/compression/stream_compression_gzip.h )
+  s.files += %w( src/core/lib/compression/stream_compression_identity.h )
+  s.files += %w( src/core/lib/debug/stats.h )
+  s.files += %w( src/core/lib/debug/stats_data.h )
   s.files += %w( src/core/lib/http/format_request.h )
   s.files += %w( src/core/lib/http/httpcli.h )
   s.files += %w( src/core/lib/http/parser.h )
+  s.files += %w( src/core/lib/iomgr/call_combiner.h )
   s.files += %w( src/core/lib/iomgr/closure.h )
   s.files += %w( src/core/lib/iomgr/combiner.h )
   s.files += %w( src/core/lib/iomgr/endpoint.h )
@@ -269,8 +278,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/error.h )
   s.files += %w( src/core/lib/iomgr/error_internal.h )
   s.files += %w( src/core/lib/iomgr/ev_epoll1_linux.h )
-  s.files += %w( src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h )
-  s.files += %w( src/core/lib/iomgr/ev_epoll_thread_pool_linux.h )
   s.files += %w( src/core/lib/iomgr/ev_epollex_linux.h )
   s.files += %w( src/core/lib/iomgr/ev_epollsig_linux.h )
   s.files += %w( src/core/lib/iomgr/ev_poll_posix.h )
@@ -369,11 +376,15 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h )
   s.files += %w( src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h )
   s.files += %w( src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h )
+  s.files += %w( third_party/nanopb/pb.h )
+  s.files += %w( third_party/nanopb/pb_common.h )
+  s.files += %w( third_party/nanopb/pb_decode.h )
+  s.files += %w( third_party/nanopb/pb_encode.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h )
-  s.files += %w( src/core/ext/filters/load_reporting/load_reporting.h )
-  s.files += %w( src/core/ext/filters/load_reporting/load_reporting_filter.h )
+  s.files += %w( src/core/ext/filters/load_reporting/server_load_reporting_filter.h )
+  s.files += %w( src/core/ext/filters/load_reporting/server_load_reporting_plugin.h )
   s.files += %w( src/core/ext/census/aggregation.h )
   s.files += %w( src/core/ext/census/base_resources.h )
   s.files += %w( src/core/ext/census/census_interface.h )
@@ -407,9 +418,14 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/compression/compression.c )
   s.files += %w( src/core/lib/compression/message_compress.c )
   s.files += %w( src/core/lib/compression/stream_compression.c )
+  s.files += %w( src/core/lib/compression/stream_compression_gzip.c )
+  s.files += %w( src/core/lib/compression/stream_compression_identity.c )
+  s.files += %w( src/core/lib/debug/stats.c )
+  s.files += %w( src/core/lib/debug/stats_data.c )
   s.files += %w( src/core/lib/http/format_request.c )
   s.files += %w( src/core/lib/http/httpcli.c )
   s.files += %w( src/core/lib/http/parser.c )
+  s.files += %w( src/core/lib/iomgr/call_combiner.c )
   s.files += %w( src/core/lib/iomgr/closure.c )
   s.files += %w( src/core/lib/iomgr/combiner.c )
   s.files += %w( src/core/lib/iomgr/endpoint.c )
@@ -418,8 +434,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/endpoint_pair_windows.c )
   s.files += %w( src/core/lib/iomgr/error.c )
   s.files += %w( src/core/lib/iomgr/ev_epoll1_linux.c )
-  s.files += %w( src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c )
-  s.files += %w( src/core/lib/iomgr/ev_epoll_thread_pool_linux.c )
   s.files += %w( src/core/lib/iomgr/ev_epollex_linux.c )
   s.files += %w( src/core/lib/iomgr/ev_epollsig_linux.c )
   s.files += %w( src/core/lib/iomgr/ev_poll_posix.c )
@@ -632,8 +646,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c )
   s.files += %w( src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c )
   s.files += %w( src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c )
-  s.files += %w( src/core/ext/filters/load_reporting/load_reporting.c )
-  s.files += %w( src/core/ext/filters/load_reporting/load_reporting_filter.c )
+  s.files += %w( src/core/ext/filters/load_reporting/server_load_reporting_filter.c )
+  s.files += %w( src/core/ext/filters/load_reporting/server_load_reporting_plugin.c )
   s.files += %w( src/core/ext/census/base_resources.c )
   s.files += %w( src/core/ext/census/context.c )
   s.files += %w( src/core/ext/census/gen/census.pb.c )
diff --git a/grpc.gyp b/grpc.gyp
index 78b03645ca..6331b76f47 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -233,9 +233,14 @@
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
         'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
         'src/core/lib/http/format_request.c',
         'src/core/lib/http/httpcli.c',
         'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
         'src/core/lib/iomgr/closure.c',
         'src/core/lib/iomgr/combiner.c',
         'src/core/lib/iomgr/endpoint.c',
@@ -244,8 +249,6 @@
         'src/core/lib/iomgr/endpoint_pair_windows.c',
         'src/core/lib/iomgr/error.c',
         'src/core/lib/iomgr/ev_epoll1_linux.c',
-        'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-        'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
         'src/core/lib/iomgr/ev_epollex_linux.c',
         'src/core/lib/iomgr/ev_epollsig_linux.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
@@ -458,8 +461,8 @@
         'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c',
         'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
         'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
-        'src/core/ext/filters/load_reporting/load_reporting.c',
-        'src/core/ext/filters/load_reporting/load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
         'src/core/ext/census/base_resources.c',
         'src/core/ext/census/context.c',
         'src/core/ext/census/gen/census.pb.c',
@@ -531,9 +534,14 @@
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
         'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
         'src/core/lib/http/format_request.c',
         'src/core/lib/http/httpcli.c',
         'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
         'src/core/lib/iomgr/closure.c',
         'src/core/lib/iomgr/combiner.c',
         'src/core/lib/iomgr/endpoint.c',
@@ -542,8 +550,6 @@
         'src/core/lib/iomgr/endpoint_pair_windows.c',
         'src/core/lib/iomgr/error.c',
         'src/core/lib/iomgr/ev_epoll1_linux.c',
-        'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-        'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
         'src/core/lib/iomgr/ev_epollex_linux.c',
         'src/core/lib/iomgr/ev_epollsig_linux.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
@@ -734,9 +740,14 @@
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
         'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
         'src/core/lib/http/format_request.c',
         'src/core/lib/http/httpcli.c',
         'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
         'src/core/lib/iomgr/closure.c',
         'src/core/lib/iomgr/combiner.c',
         'src/core/lib/iomgr/endpoint.c',
@@ -745,8 +756,6 @@
         'src/core/lib/iomgr/endpoint_pair_windows.c',
         'src/core/lib/iomgr/error.c',
         'src/core/lib/iomgr/ev_epoll1_linux.c',
-        'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-        'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
         'src/core/lib/iomgr/ev_epollex_linux.c',
         'src/core/lib/iomgr/ev_epollsig_linux.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
@@ -922,9 +931,14 @@
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
         'src/core/lib/compression/stream_compression.c',
+        'src/core/lib/compression/stream_compression_gzip.c',
+        'src/core/lib/compression/stream_compression_identity.c',
+        'src/core/lib/debug/stats.c',
+        'src/core/lib/debug/stats_data.c',
         'src/core/lib/http/format_request.c',
         'src/core/lib/http/httpcli.c',
         'src/core/lib/http/parser.c',
+        'src/core/lib/iomgr/call_combiner.c',
         'src/core/lib/iomgr/closure.c',
         'src/core/lib/iomgr/combiner.c',
         'src/core/lib/iomgr/endpoint.c',
@@ -933,8 +947,6 @@
         'src/core/lib/iomgr/endpoint_pair_windows.c',
         'src/core/lib/iomgr/error.c',
         'src/core/lib/iomgr/ev_epoll1_linux.c',
-        'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-        'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
         'src/core/lib/iomgr/ev_epollex_linux.c',
         'src/core/lib/iomgr/ev_epollsig_linux.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
@@ -1104,8 +1116,8 @@
         'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
         'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
         'src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c',
-        'src/core/ext/filters/load_reporting/load_reporting.c',
-        'src/core/ext/filters/load_reporting/load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+        'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.c',
@@ -1219,6 +1231,17 @@
       ],
     },
     {
+      'target_name': 'grpc++_core_stats',
+      'type': 'static_library',
+      'dependencies': [
+        'grpc++',
+      ],
+      'sources': [
+        'src/proto/grpc/core/stats.proto',
+        'src/cpp/util/core_stats.cc',
+      ],
+    },
+    {
       'target_name': 'grpc++_error_details',
       'type': 'static_library',
       'dependencies': [
@@ -1500,6 +1523,7 @@
       'dependencies': [
         'grpc_test_util',
         'grpc++_test_util',
+        'grpc++_core_stats',
         'grpc++',
         'grpc',
       ],
@@ -2393,6 +2417,9 @@
         'test/core/end2end/tests/simple_delayed_request.c',
         'test/core/end2end/tests/simple_metadata.c',
         'test/core/end2end/tests/simple_request.c',
+        'test/core/end2end/tests/stream_compression_compressed_payload.c',
+        'test/core/end2end/tests/stream_compression_payload.c',
+        'test/core/end2end/tests/stream_compression_ping_pong_streaming.c',
         'test/core/end2end/tests/streaming_error_response.c',
         'test/core/end2end/tests/trailing_metadata.c',
         'test/core/end2end/tests/workaround_cronet_compression.c',
@@ -2462,6 +2489,9 @@
         'test/core/end2end/tests/simple_delayed_request.c',
         'test/core/end2end/tests/simple_metadata.c',
         'test/core/end2end/tests/simple_request.c',
+        'test/core/end2end/tests/stream_compression_compressed_payload.c',
+        'test/core/end2end/tests/stream_compression_payload.c',
+        'test/core/end2end/tests/stream_compression_ping_pong_streaming.c',
         'test/core/end2end/tests/streaming_error_response.c',
         'test/core/end2end/tests/trailing_metadata.c',
         'test/core/end2end/tests/workaround_cronet_compression.c',
diff --git a/include/grpc++/alarm.h b/include/grpc++/alarm.h
index ed8dacbc94..2d88d868e5 100644
--- a/include/grpc++/alarm.h
+++ b/include/grpc++/alarm.h
@@ -37,20 +37,33 @@ class CompletionQueue;
 /// A thin wrapper around \a grpc_alarm (see / \a / src/core/surface/alarm.h).
 class Alarm : private GrpcLibraryCodegen {
  public:
-  /// Create a completion queue alarm instance associated to \a cq.
-  ///
-  /// Once the alarm expires (at \a deadline) or it's cancelled (see \a Cancel),
-  /// an event with tag \a tag will be added to \a cq. If the alarm expired, the
-  /// event's success bit will be true, false otherwise (ie, upon cancellation).
+  /// Create an unset completion queue alarm
+  Alarm() : tag_(nullptr), alarm_(grpc_alarm_create(nullptr)) {}
+
+  /// DEPRECATED: Create and set a completion queue alarm instance associated to
+  /// \a cq.
+  /// This form is deprecated because it is inherently racy.
   /// \internal We rely on the presence of \a cq for grpc initialization. If \a
   /// cq were ever to be removed, a reference to a static
   /// internal::GrpcLibraryInitializer instance would need to be introduced
   /// here. \endinternal.
   template <typename T>
   Alarm(CompletionQueue* cq, const T& deadline, void* tag)
-      : tag_(tag),
-        alarm_(grpc_alarm_create(cq->cq(), TimePoint<T>(deadline).raw_time(),
-                                 static_cast<void*>(&tag_))) {}
+      : tag_(tag), alarm_(grpc_alarm_create(nullptr)) {
+    grpc_alarm_set(alarm_, cq->cq(), TimePoint<T>(deadline).raw_time(),
+                   static_cast<void*>(&tag_), nullptr);
+  }
+
+  /// Trigger an alarm instance on completion queue \a cq at the specified time.
+  /// Once the alarm expires (at \a deadline) or it's cancelled (see \a Cancel),
+  /// an event with tag \a tag will be added to \a cq. If the alarm expired, the
+  /// event's success bit will be true, false otherwise (ie, upon cancellation).
+  template <typename T>
+  void Set(CompletionQueue* cq, const T& deadline, void* tag) {
+    tag_.Set(tag);
+    grpc_alarm_set(alarm_, cq->cq(), TimePoint<T>(deadline).raw_time(),
+                   static_cast<void*>(&tag_), nullptr);
+  }
 
   /// Alarms aren't copyable.
   Alarm(const Alarm&) = delete;
@@ -69,17 +82,20 @@ class Alarm : private GrpcLibraryCodegen {
 
   /// Destroy the given completion queue alarm, cancelling it in the process.
   ~Alarm() {
-    if (alarm_ != nullptr) grpc_alarm_destroy(alarm_);
+    if (alarm_ != nullptr) grpc_alarm_destroy(alarm_, nullptr);
   }
 
   /// Cancel a completion queue alarm. Calling this function over an alarm that
   /// has already fired has no effect.
-  void Cancel() { grpc_alarm_cancel(alarm_); }
+  void Cancel() {
+    if (alarm_ != nullptr) grpc_alarm_cancel(alarm_, nullptr);
+  }
 
  private:
   class AlarmEntry : public CompletionQueueTag {
    public:
     AlarmEntry(void* tag) : tag_(tag) {}
+    void Set(void* tag) { tag_ = tag; }
     bool FinalizeResult(void** tag, bool* status) override {
       *tag = tag_;
       return true;
diff --git a/include/grpc++/generic/generic_stub.h b/include/grpc++/generic/generic_stub.h
index 7b269d0887..d5064318cf 100644
--- a/include/grpc++/generic/generic_stub.h
+++ b/include/grpc++/generic/generic_stub.h
@@ -20,6 +20,7 @@
 #define GRPCXX_GENERIC_GENERIC_STUB_H
 
 #include <grpc++/support/async_stream.h>
+#include <grpc++/support/async_unary_call.h>
 #include <grpc++/support/byte_buffer.h>
 
 namespace grpc {
@@ -27,6 +28,7 @@ namespace grpc {
 class CompletionQueue;
 typedef ClientAsyncReaderWriter<ByteBuffer, ByteBuffer>
     GenericClientAsyncReaderWriter;
+typedef ClientAsyncResponseReader<ByteBuffer> GenericClientAsyncResponseReader;
 
 /// Generic stubs provide a type-unsafe interface to call gRPC methods
 /// by name.
@@ -44,6 +46,21 @@ class GenericStub final {
       ClientContext* context, const grpc::string& method, CompletionQueue* cq,
       void* tag);
 
+  /// Setup a call to a named method \a method using \a context, but don't
+  /// start it. Let it be started explicitly with StartCall and a tag.
+  /// The return value only indicates whether or not registration of the call
+  /// succeeded (i.e. the call won't proceed if the return value is nullptr).
+  std::unique_ptr<GenericClientAsyncReaderWriter> PrepareCall(
+      ClientContext* context, const grpc::string& method, CompletionQueue* cq);
+
+  /// Setup a unary call to a named method \a method using \a context, and don't
+  /// start it. Let it be started explicitly with StartCall.
+  /// The return value only indicates whether or not registration of the call
+  /// succeeded (i.e. the call won't proceed if the return value is nullptr).
+  std::unique_ptr<GenericClientAsyncResponseReader> PrepareUnaryCall(
+      ClientContext* context, const grpc::string& method,
+      const ByteBuffer& request, CompletionQueue* cq);
+
  private:
   std::shared_ptr<ChannelInterface> channel_;
 };
diff --git a/include/grpc++/impl/codegen/async_stream.h b/include/grpc++/impl/codegen/async_stream.h
index 9cf7ac30dd..e60572fc93 100644
--- a/include/grpc++/impl/codegen/async_stream.h
+++ b/include/grpc++/impl/codegen/async_stream.h
@@ -35,6 +35,11 @@ class ClientAsyncStreamingInterface {
  public:
   virtual ~ClientAsyncStreamingInterface() {}
 
+  /// Start the call that was set up by the constructor, but only if the
+  /// constructor was invoked through the "Prepare" API which doesn't actually
+  /// start the call
+  virtual void StartCall(void* tag) = 0;
+
   /// Request notification of the reading of the initial metadata. Completion
   /// will be notified by \a tag on the associated completion queue.
   /// This call is optional, but if it is used, it cannot be used concurrently
@@ -156,20 +161,22 @@ class ClientAsyncReaderInterface : public ClientAsyncStreamingInterface,
 template <class R>
 class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
  public:
-  /// Create a stream and write the first request out.
+  /// Create a stream object.
+  /// Write the first request out if \a start is set.
   /// \a tag will be notified on \a cq when the call has been started and
-  /// \a request has been written out.
+  /// \a request has been written out. If \a start is not set, \a tag must be
+  /// nullptr and the actual call must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
   template <class W>
   static ClientAsyncReader* Create(ChannelInterface* channel,
                                    CompletionQueue* cq, const RpcMethod& method,
                                    ClientContext* context, const W& request,
-                                   void* tag) {
+                                   bool start, void* tag) {
     Call call = channel->CreateCall(method, context, cq);
     return new (g_core_codegen_interface->grpc_call_arena_alloc(
         call.call(), sizeof(ClientAsyncReader)))
-        ClientAsyncReader(call, context, request, tag);
+        ClientAsyncReader(call, context, request, start, tag);
   }
 
   // always allocated against a call arena, no memory free required
@@ -177,6 +184,12 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
     assert(size == sizeof(ClientAsyncReader));
   }
 
+  void StartCall(void* tag) override {
+    assert(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
   /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata
   /// method for semantics.
   ///
@@ -186,6 +199,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   ///     calling code can access the received metadata through the
   ///     \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
+    assert(started_);
     GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
@@ -194,6 +208,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   }
 
   void Read(R* msg, void* tag) override {
+    assert(started_);
     read_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       read_ops_.RecvInitialMetadata(context_);
@@ -208,6 +223,7 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata received from the server.
   void Finish(Status* status, void* tag) override {
+    assert(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -219,19 +235,28 @@ class ClientAsyncReader final : public ClientAsyncReaderInterface<R> {
  private:
   template <class W>
   ClientAsyncReader(Call call, ClientContext* context, const W& request,
-                    void* tag)
-      : context_(context), call_(call) {
-    init_ops_.set_output_tag(tag);
-    init_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                  context->initial_metadata_flags());
+                    bool start, void* tag)
+      : context_(context), call_(call), started_(start) {
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(init_ops_.SendMessage(request).ok());
     init_ops_.ClientSendClose();
+    if (start) {
+      StartCallInternal(tag);
+    } else {
+      assert(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    init_ops_.SendInitialMetadata(context_->send_initial_metadata_,
+                                  context_->initial_metadata_flags());
+    init_ops_.set_output_tag(tag);
     call_.PerformOps(&init_ops_);
   }
 
   ClientContext* context_;
   Call call_;
+  bool started_;
   CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
       init_ops_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
@@ -257,9 +282,12 @@ class ClientAsyncWriterInterface : public ClientAsyncStreamingInterface,
 template <class W>
 class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
  public:
-  /// Create a stream and write the first request out.
+  /// Create a stream object.
+  /// Start the RPC if \a start is set
   /// \a tag will be notified on \a cq when the call has been started (i.e.
   /// intitial metadata sent) and \a request has been written out.
+  /// If \a start is not set, \a tag must be nullptr and the actual call
+  /// must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
   /// \a response will be filled in with the single expected response
@@ -269,11 +297,11 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   static ClientAsyncWriter* Create(ChannelInterface* channel,
                                    CompletionQueue* cq, const RpcMethod& method,
                                    ClientContext* context, R* response,
-                                   void* tag) {
+                                   bool start, void* tag) {
     Call call = channel->CreateCall(method, context, cq);
     return new (g_core_codegen_interface->grpc_call_arena_alloc(
         call.call(), sizeof(ClientAsyncWriter)))
-        ClientAsyncWriter(call, context, response, tag);
+        ClientAsyncWriter(call, context, response, start, tag);
   }
 
   // always allocated against a call arena, no memory free required
@@ -281,6 +309,12 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
     assert(size == sizeof(ClientAsyncWriter));
   }
 
+  void StartCall(void* tag) override {
+    assert(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
   /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method for
   /// semantics.
   ///
@@ -289,6 +323,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   ///     associated with this call is updated, and the calling code can access
   ///     the received metadata through the \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
+    assert(started_);
     GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
@@ -297,6 +332,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   }
 
   void Write(const W& msg, void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
@@ -304,6 +340,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   }
 
   void Write(const W& msg, WriteOptions options, void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     if (options.is_last_message()) {
       options.set_buffer_hint();
@@ -315,6 +352,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   }
 
   void WritesDone(void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     write_ops_.ClientSendClose();
     call_.PerformOps(&write_ops_);
@@ -328,6 +366,7 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
   ///   - attempts to fill in the \a response parameter passed to this class's
   ///     constructor with the server's response message.
   void Finish(Status* status, void* tag) override {
+    assert(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -338,25 +377,32 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
 
  private:
   template <class R>
-  ClientAsyncWriter(Call call, ClientContext* context, R* response, void* tag)
-      : context_(context), call_(call) {
+  ClientAsyncWriter(Call call, ClientContext* context, R* response, bool start,
+                    void* tag)
+      : context_(context), call_(call), started_(start) {
     finish_ops_.RecvMessage(response);
     finish_ops_.AllowNoMessage();
-    // if corked bit is set in context, we buffer up the initial metadata to
-    // coalesce with later message to be sent. No op is performed.
-    if (context_->initial_metadata_corked_) {
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
+    if (start) {
+      StartCallInternal(tag);
     } else {
+      assert(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    write_ops_.SendInitialMetadata(context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    // if corked bit is set in context, we just keep the initial metadata
+    // buffered up to coalesce with later message send. No op is performed.
+    if (!context_->initial_metadata_corked_) {
       write_ops_.set_output_tag(tag);
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
       call_.PerformOps(&write_ops_);
     }
   }
 
   ClientContext* context_;
   Call call_;
+  bool started_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
   CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
       write_ops_;
@@ -388,20 +434,23 @@ template <class W, class R>
 class ClientAsyncReaderWriter final
     : public ClientAsyncReaderWriterInterface<W, R> {
  public:
-  /// Create a stream and write the first request out.
+  /// Create a stream object.
+  /// Start the RPC request if \a start is set.
   /// \a tag will be notified on \a cq when the call has been started (i.e.
-  /// intitial metadata sent).
+  /// intitial metadata sent). If \a start is not set, \a tag must be
+  /// nullptr and the actual call must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
   static ClientAsyncReaderWriter* Create(ChannelInterface* channel,
                                          CompletionQueue* cq,
                                          const RpcMethod& method,
-                                         ClientContext* context, void* tag) {
+                                         ClientContext* context, bool start,
+                                         void* tag) {
     Call call = channel->CreateCall(method, context, cq);
 
     return new (g_core_codegen_interface->grpc_call_arena_alloc(
         call.call(), sizeof(ClientAsyncReaderWriter)))
-        ClientAsyncReaderWriter(call, context, tag);
+        ClientAsyncReaderWriter(call, context, start, tag);
   }
 
   // always allocated against a call arena, no memory free required
@@ -409,6 +458,12 @@ class ClientAsyncReaderWriter final
     assert(size == sizeof(ClientAsyncReaderWriter));
   }
 
+  void StartCall(void* tag) override {
+    assert(!started_);
+    started_ = true;
+    StartCallInternal(tag);
+  }
+
   /// See the \a ClientAsyncStreamingInterface.ReadInitialMetadata method
   /// for semantics of this method.
   ///
@@ -417,6 +472,7 @@ class ClientAsyncReaderWriter final
   ///     is updated with it, and then the receiving initial metadata can
   ///     be accessed through this \a ClientContext.
   void ReadInitialMetadata(void* tag) override {
+    assert(started_);
     GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
 
     meta_ops_.set_output_tag(tag);
@@ -425,6 +481,7 @@ class ClientAsyncReaderWriter final
   }
 
   void Read(R* msg, void* tag) override {
+    assert(started_);
     read_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       read_ops_.RecvInitialMetadata(context_);
@@ -434,6 +491,7 @@ class ClientAsyncReaderWriter final
   }
 
   void Write(const W& msg, void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
@@ -441,6 +499,7 @@ class ClientAsyncReaderWriter final
   }
 
   void Write(const W& msg, WriteOptions options, void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     if (options.is_last_message()) {
       options.set_buffer_hint();
@@ -452,6 +511,7 @@ class ClientAsyncReaderWriter final
   }
 
   void WritesDone(void* tag) override {
+    assert(started_);
     write_ops_.set_output_tag(tag);
     write_ops_.ClientSendClose();
     call_.PerformOps(&write_ops_);
@@ -462,6 +522,7 @@ class ClientAsyncReaderWriter final
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
   void Finish(Status* status, void* tag) override {
+    assert(started_);
     finish_ops_.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_ops_.RecvInitialMetadata(context_);
@@ -471,23 +532,30 @@ class ClientAsyncReaderWriter final
   }
 
  private:
-  ClientAsyncReaderWriter(Call call, ClientContext* context, void* tag)
-      : context_(context), call_(call) {
-    if (context_->initial_metadata_corked_) {
-      // if corked bit is set in context, we buffer up the initial metadata to
-      // coalesce with later message to be sent. No op is performed.
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
+  ClientAsyncReaderWriter(Call call, ClientContext* context, bool start,
+                          void* tag)
+      : context_(context), call_(call), started_(start) {
+    if (start) {
+      StartCallInternal(tag);
     } else {
+      assert(tag == nullptr);
+    }
+  }
+
+  void StartCallInternal(void* tag) {
+    write_ops_.SendInitialMetadata(context_->send_initial_metadata_,
+                                   context_->initial_metadata_flags());
+    // if corked bit is set in context, we just keep the initial metadata
+    // buffered up to coalesce with later message send. No op is performed.
+    if (!context_->initial_metadata_corked_) {
       write_ops_.set_output_tag(tag);
-      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                     context->initial_metadata_flags());
       call_.PerformOps(&write_ops_);
     }
   }
 
   ClientContext* context_;
   Call call_;
+  bool started_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
   CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
   CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
diff --git a/include/grpc++/impl/codegen/async_unary_call.h b/include/grpc++/impl/codegen/async_unary_call.h
index f0f909686b..e472f04f56 100644
--- a/include/grpc++/impl/codegen/async_unary_call.h
+++ b/include/grpc++/impl/codegen/async_unary_call.h
@@ -32,13 +32,18 @@ namespace grpc {
 class CompletionQueue;
 extern CoreCodegenInterface* g_core_codegen_interface;
 
-/// An interface relevant for async client side unary RPCS (which send
+/// An interface relevant for async client side unary RPCs (which send
 /// one request message to a server and receive one response message).
 template <class R>
 class ClientAsyncResponseReaderInterface {
  public:
   virtual ~ClientAsyncResponseReaderInterface() {}
 
+  /// Start the call that was set up by the constructor, but only if the
+  /// constructor was invoked through the "Prepare" API which doesn't actually
+  /// start the call
+  virtual void StartCall() = 0;
+
   /// Request notification of the reading of initial metadata. Completion
   /// will be notified by \a tag on the associated completion queue.
   /// This call is optional, but if it is used, it cannot be used concurrently
@@ -70,9 +75,10 @@ template <class R>
 class ClientAsyncResponseReader final
     : public ClientAsyncResponseReaderInterface<R> {
  public:
-  /// Start a call and write the request out.
+  /// Start a call and write the request out if \a start is set.
   /// \a tag will be notified on \a cq when the call has been started (i.e.
   /// intitial metadata sent) and \a request has been written out.
+  /// If \a start is not set, the actual call must be initiated by StartCall
   /// Note that \a context will be used to fill in custom initial metadata
   /// used to send to the server when starting the call.
   template <class W>
@@ -80,11 +86,11 @@ class ClientAsyncResponseReader final
                                            CompletionQueue* cq,
                                            const RpcMethod& method,
                                            ClientContext* context,
-                                           const W& request) {
+                                           const W& request, bool start) {
     Call call = channel->CreateCall(method, context, cq);
     return new (g_core_codegen_interface->grpc_call_arena_alloc(
         call.call(), sizeof(ClientAsyncResponseReader)))
-        ClientAsyncResponseReader(call, context, request);
+        ClientAsyncResponseReader(call, context, request, start);
   }
 
   // always allocated against a call arena, no memory free required
@@ -92,13 +98,20 @@ class ClientAsyncResponseReader final
     assert(size == sizeof(ClientAsyncResponseReader));
   }
 
+  void StartCall() override {
+    assert(!started_);
+    started_ = true;
+    StartCallInternal();
+  }
+
   /// See \a ClientAsyncResponseReaderInterface::ReadInitialMetadata for
   /// semantics.
   ///
   /// Side effect:
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
-  void ReadInitialMetadata(void* tag) {
+  void ReadInitialMetadata(void* tag) override {
+    assert(started_);
     GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_);
 
     meta_buf.set_output_tag(tag);
@@ -111,7 +124,8 @@ class ClientAsyncResponseReader final
   /// Side effect:
   ///   - the \a ClientContext associated with this call is updated with
   ///     possible initial and trailing metadata sent from the server.
-  void Finish(R* msg, Status* status, void* tag) {
+  void Finish(R* msg, Status* status, void* tag) override {
+    assert(started_);
     finish_buf.set_output_tag(tag);
     if (!context_->initial_metadata_received_) {
       finish_buf.RecvInitialMetadata(context_);
@@ -125,15 +139,22 @@ class ClientAsyncResponseReader final
  private:
   ClientContext* const context_;
   Call call_;
+  bool started_;
 
   template <class W>
-  ClientAsyncResponseReader(Call call, ClientContext* context, const W& request)
-      : context_(context), call_(call) {
-    init_buf.SendInitialMetadata(context->send_initial_metadata_,
-                                 context->initial_metadata_flags());
+  ClientAsyncResponseReader(Call call, ClientContext* context, const W& request,
+                            bool start)
+      : context_(context), call_(call), started_(start) {
+    // Bind the metadata at time of StartCallInternal but set up the rest here
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(init_buf.SendMessage(request).ok());
     init_buf.ClientSendClose();
+    if (start) StartCallInternal();
+  }
+
+  void StartCallInternal() {
+    init_buf.SendInitialMetadata(context_->send_initial_metadata_,
+                                 context_->initial_metadata_flags());
     call_.PerformOps(&init_buf);
   }
 
diff --git a/include/grpc++/impl/codegen/byte_buffer.h b/include/grpc++/impl/codegen/byte_buffer.h
new file mode 100644
index 0000000000..57d731be18
--- /dev/null
+++ b/include/grpc++/impl/codegen/byte_buffer.h
@@ -0,0 +1,156 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPCXX_IMPL_CODEGEN_BYTE_BUFFER_H
+#define GRPCXX_IMPL_CODEGEN_BYTE_BUFFER_H
+
+#include <grpc/impl/codegen/byte_buffer.h>
+
+#include <grpc++/impl/codegen/config.h>
+#include <grpc++/impl/codegen/core_codegen_interface.h>
+#include <grpc++/impl/codegen/serialization_traits.h>
+#include <grpc++/impl/codegen/slice.h>
+#include <grpc++/impl/codegen/status.h>
+
+#include <vector>
+
+namespace grpc {
+
+template <class R>
+class CallOpRecvMessage;
+class MethodHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class RpcMethodHandler;
+template <class ServiceType, class RequestType, class ResponseType>
+class ServerStreamingHandler;
+namespace CallOpGenericRecvMessageHelper {
+template <class R>
+class DeserializeFuncType;
+}  // namespace CallOpGenericRecvMessageHelper
+
+/// A sequence of bytes.
+class ByteBuffer final {
+ public:
+  /// Constuct an empty buffer.
+  ByteBuffer() : buffer_(nullptr) {}
+
+  /// Construct buffer from \a slices, of which there are \a nslices.
+  ByteBuffer(const Slice* slices, size_t nslices);
+
+  /// Constuct a byte buffer by referencing elements of existing buffer
+  /// \a buf. Wrapper of core function grpc_byte_buffer_copy
+  ByteBuffer(const ByteBuffer& buf);
+
+  ~ByteBuffer() {
+    if (buffer_) {
+      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+    }
+  }
+
+  ByteBuffer& operator=(const ByteBuffer&);
+
+  /// Dump (read) the buffer contents into \a slices.
+  Status Dump(std::vector<Slice>* slices) const;
+
+  /// Remove all data.
+  void Clear() {
+    if (buffer_) {
+      g_core_codegen_interface->grpc_byte_buffer_destroy(buffer_);
+      buffer_ = nullptr;
+    }
+  }
+
+  /// Make a duplicate copy of the internals of this byte
+  /// buffer so that we have our own owned version of it.
+  /// bbuf.Duplicate(); is equivalent to bbuf=bbuf; but is actually readable
+  void Duplicate() {
+    buffer_ = g_core_codegen_interface->grpc_byte_buffer_copy(buffer_);
+  }
+
+  /// Forget underlying byte buffer without destroying
+  /// Use this only for un-owned byte buffers
+  void Release() { buffer_ = nullptr; }
+
+  /// Buffer size in bytes.
+  size_t Length() const;
+
+  /// Swap the state of *this and *other.
+  void Swap(ByteBuffer* other);
+
+  /// Is this ByteBuffer valid?
+  bool Valid() const { return (buffer_ != nullptr); }
+
+ private:
+  friend class SerializationTraits<ByteBuffer, void>;
+  friend class CallOpSendMessage;
+  template <class R>
+  friend class CallOpRecvMessage;
+  friend class CallOpGenericRecvMessage;
+  friend class MethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class RpcMethodHandler;
+  template <class ServiceType, class RequestType, class ResponseType>
+  friend class ServerStreamingHandler;
+  template <class R>
+  friend class CallOpGenericRecvMessageHelper::DeserializeFuncType;
+
+  grpc_byte_buffer* buffer_;
+
+  // takes ownership
+  void set_buffer(grpc_byte_buffer* buf) {
+    if (buffer_) {
+      Clear();
+    }
+    buffer_ = buf;
+  }
+
+  grpc_byte_buffer* c_buffer() { return buffer_; }
+  grpc_byte_buffer** c_buffer_ptr() { return &buffer_; }
+
+  class ByteBufferPointer {
+   public:
+    ByteBufferPointer(const ByteBuffer* b)
+        : bbuf_(const_cast<ByteBuffer*>(b)) {}
+    operator ByteBuffer*() { return bbuf_; }
+    operator grpc_byte_buffer*() { return bbuf_->buffer_; }
+    operator grpc_byte_buffer**() { return &bbuf_->buffer_; }
+
+   private:
+    ByteBuffer* bbuf_;
+  };
+  ByteBufferPointer bbuf_ptr() const { return ByteBufferPointer(this); }
+};
+
+template <>
+class SerializationTraits<ByteBuffer, void> {
+ public:
+  static Status Deserialize(ByteBuffer* byte_buffer, ByteBuffer* dest) {
+    dest->set_buffer(byte_buffer->buffer_);
+    return Status::OK;
+  }
+  static Status Serialize(const ByteBuffer& source, ByteBuffer* buffer,
+                          bool* own_buffer) {
+    *buffer = source;
+    *own_buffer = true;
+    return Status::OK;
+  }
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_IMPL_CODEGEN_BYTE_BUFFER_H
diff --git a/include/grpc++/impl/codegen/call.h b/include/grpc++/impl/codegen/call.h
index f45ab239fc..d9988e51fc 100644
--- a/include/grpc++/impl/codegen/call.h
+++ b/include/grpc++/impl/codegen/call.h
@@ -25,6 +25,7 @@
 #include <map>
 #include <memory>
 
+#include <grpc++/impl/codegen/byte_buffer.h>
 #include <grpc++/impl/codegen/call_hook.h>
 #include <grpc++/impl/codegen/client_context.h>
 #include <grpc++/impl/codegen/completion_queue_tag.h>
@@ -39,8 +40,6 @@
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/grpc_types.h>
 
-struct grpc_byte_buffer;
-
 namespace grpc {
 
 class ByteBuffer;
@@ -169,6 +168,15 @@ class WriteOptions {
     return *this;
   }
 
+  /// Guarantee that all bytes have been written to the wire before completing
+  /// this write (usually writes are completed when they pass flow control)
+  inline WriteOptions& set_write_through() {
+    SetBit(GRPC_WRITE_THROUGH);
+    return *this;
+  }
+
+  inline bool is_write_through() const { return GetBit(GRPC_WRITE_THROUGH); }
+
   /// Get value for the flag indicating that this is the last message, and
   /// should be coalesced with trailing metadata.
   ///
@@ -204,12 +212,14 @@ class CallOpSendInitialMetadata {
  public:
   CallOpSendInitialMetadata() : send_(false) {
     maybe_compression_level_.is_set = false;
+    maybe_stream_compression_level_.is_set = false;
   }
 
   void SendInitialMetadata(
       const std::multimap<grpc::string, grpc::string>& metadata,
       uint32_t flags) {
     maybe_compression_level_.is_set = false;
+    maybe_stream_compression_level_.is_set = false;
     send_ = true;
     flags_ = flags;
     initial_metadata_ =
@@ -221,6 +231,11 @@ class CallOpSendInitialMetadata {
     maybe_compression_level_.level = level;
   }
 
+  void set_stream_compression_level(grpc_stream_compression_level level) {
+    maybe_stream_compression_level_.is_set = true;
+    maybe_stream_compression_level_.level = level;
+  }
+
  protected:
   void AddOp(grpc_op* ops, size_t* nops) {
     if (!send_) return;
@@ -236,6 +251,12 @@ class CallOpSendInitialMetadata {
       op->data.send_initial_metadata.maybe_compression_level.level =
           maybe_compression_level_.level;
     }
+    op->data.send_initial_metadata.maybe_stream_compression_level.is_set =
+        maybe_stream_compression_level_.is_set;
+    if (maybe_stream_compression_level_.is_set) {
+      op->data.send_initial_metadata.maybe_stream_compression_level.level =
+          maybe_stream_compression_level_.level;
+    }
   }
   void FinishOp(bool* status) {
     if (!send_) return;
@@ -251,11 +272,15 @@ class CallOpSendInitialMetadata {
     bool is_set;
     grpc_compression_level level;
   } maybe_compression_level_;
+  struct {
+    bool is_set;
+    grpc_stream_compression_level level;
+  } maybe_stream_compression_level_;
 };
 
 class CallOpSendMessage {
  public:
-  CallOpSendMessage() : send_buf_(nullptr), own_buf_(false) {}
+  CallOpSendMessage() : send_buf_() {}
 
   /// Send \a message using \a options for the write. The \a options are cleared
   /// after use.
@@ -268,30 +293,37 @@ class CallOpSendMessage {
 
  protected:
   void AddOp(grpc_op* ops, size_t* nops) {
-    if (send_buf_ == nullptr) return;
+    if (!send_buf_.Valid()) return;
     grpc_op* op = &ops[(*nops)++];
     op->op = GRPC_OP_SEND_MESSAGE;
     op->flags = write_options_.flags();
     op->reserved = NULL;
-    op->data.send_message.send_message = send_buf_;
+    op->data.send_message.send_message = send_buf_.c_buffer();
     // Flags are per-message: clear them after use.
     write_options_.Clear();
   }
-  void FinishOp(bool* status) {
-    if (own_buf_) g_core_codegen_interface->grpc_byte_buffer_destroy(send_buf_);
-    send_buf_ = nullptr;
-  }
+  void FinishOp(bool* status) { send_buf_.Clear(); }
 
  private:
-  grpc_byte_buffer* send_buf_;
+  ByteBuffer send_buf_;
   WriteOptions write_options_;
-  bool own_buf_;
 };
 
+namespace internal {
+template <class T>
+T Example();
+}  // namespace internal
+
 template <class M>
 Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) {
   write_options_ = options;
-  return SerializationTraits<M>::Serialize(message, &send_buf_, &own_buf_);
+  bool own_buf;
+  Status result = SerializationTraits<M>::Serialize(
+      message, send_buf_.bbuf_ptr(), &own_buf);
+  if (!own_buf) {
+    send_buf_.Duplicate();
+  }
+  return result;
 }
 
 template <class M>
@@ -321,18 +353,20 @@ class CallOpRecvMessage {
     op->op = GRPC_OP_RECV_MESSAGE;
     op->flags = 0;
     op->reserved = NULL;
-    op->data.recv_message.recv_message = &recv_buf_;
+    op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr();
   }
 
   void FinishOp(bool* status) {
     if (message_ == nullptr) return;
-    if (recv_buf_) {
+    if (recv_buf_.Valid()) {
       if (*status) {
         got_message = *status =
-            SerializationTraits<R>::Deserialize(recv_buf_, message_).ok();
+            SerializationTraits<R>::Deserialize(recv_buf_.bbuf_ptr(), message_)
+                .ok();
+        recv_buf_.Release();
       } else {
         got_message = false;
-        g_core_codegen_interface->grpc_byte_buffer_destroy(recv_buf_);
+        recv_buf_.Clear();
       }
     } else {
       got_message = false;
@@ -345,14 +379,14 @@ class CallOpRecvMessage {
 
  private:
   R* message_;
-  grpc_byte_buffer* recv_buf_;
+  ByteBuffer recv_buf_;
   bool allow_not_getting_message_;
 };
 
 namespace CallOpGenericRecvMessageHelper {
 class DeserializeFunc {
  public:
-  virtual Status Deserialize(grpc_byte_buffer* buf) = 0;
+  virtual Status Deserialize(ByteBuffer* buf) = 0;
   virtual ~DeserializeFunc() {}
 };
 
@@ -360,8 +394,8 @@ template <class R>
 class DeserializeFuncType final : public DeserializeFunc {
  public:
   DeserializeFuncType(R* message) : message_(message) {}
-  Status Deserialize(grpc_byte_buffer* buf) override {
-    return SerializationTraits<R>::Deserialize(buf, message_);
+  Status Deserialize(ByteBuffer* buf) override {
+    return SerializationTraits<R>::Deserialize(buf->bbuf_ptr(), message_);
   }
 
   ~DeserializeFuncType() override {}
@@ -397,18 +431,19 @@ class CallOpGenericRecvMessage {
     op->op = GRPC_OP_RECV_MESSAGE;
     op->flags = 0;
     op->reserved = NULL;
-    op->data.recv_message.recv_message = &recv_buf_;
+    op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr();
   }
 
   void FinishOp(bool* status) {
     if (!deserialize_) return;
-    if (recv_buf_) {
+    if (recv_buf_.Valid()) {
       if (*status) {
         got_message = true;
-        *status = deserialize_->Deserialize(recv_buf_).ok();
+        *status = deserialize_->Deserialize(&recv_buf_).ok();
+        recv_buf_.Release();
       } else {
         got_message = false;
-        g_core_codegen_interface->grpc_byte_buffer_destroy(recv_buf_);
+        recv_buf_.Clear();
       }
     } else {
       got_message = false;
@@ -421,7 +456,7 @@ class CallOpGenericRecvMessage {
 
  private:
   std::unique_ptr<CallOpGenericRecvMessageHelper::DeserializeFunc> deserialize_;
-  grpc_byte_buffer* recv_buf_;
+  ByteBuffer recv_buf_;
   bool allow_not_getting_message_;
 };
 
diff --git a/include/grpc++/impl/codegen/core_codegen.h b/include/grpc++/impl/codegen/core_codegen.h
index 2b15a01845..c751c1e734 100644
--- a/include/grpc++/impl/codegen/core_codegen.h
+++ b/include/grpc++/impl/codegen/core_codegen.h
@@ -68,6 +68,7 @@ class CoreCodegen final : public CoreCodegenInterface {
   void grpc_call_unref(grpc_call* call) override;
   virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) override;
 
+  grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) override;
   void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) override;
 
   int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
diff --git a/include/grpc++/impl/codegen/core_codegen_interface.h b/include/grpc++/impl/codegen/core_codegen_interface.h
index b4c771ac93..a4c50dab87 100644
--- a/include/grpc++/impl/codegen/core_codegen_interface.h
+++ b/include/grpc++/impl/codegen/core_codegen_interface.h
@@ -74,6 +74,7 @@ class CoreCodegenInterface {
   virtual void gpr_cv_signal(gpr_cv* cv) = 0;
   virtual void gpr_cv_broadcast(gpr_cv* cv) = 0;
 
+  virtual grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) = 0;
   virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0;
 
   virtual int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
diff --git a/include/grpc++/impl/codegen/method_handler_impl.h b/include/grpc++/impl/codegen/method_handler_impl.h
index 15e24bdcdc..e14cb0e926 100644
--- a/include/grpc++/impl/codegen/method_handler_impl.h
+++ b/include/grpc++/impl/codegen/method_handler_impl.h
@@ -19,6 +19,7 @@
 #ifndef GRPCXX_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
 #define GRPCXX_IMPL_CODEGEN_METHOD_HANDLER_IMPL_H
 
+#include <grpc++/impl/codegen/byte_buffer.h>
 #include <grpc++/impl/codegen/core_codegen_interface.h>
 #include <grpc++/impl/codegen/rpc_service_method.h>
 #include <grpc++/impl/codegen/sync_stream.h>
@@ -37,8 +38,8 @@ class RpcMethodHandler : public MethodHandler {
 
   void RunHandler(const HandlerParameter& param) final {
     RequestType req;
-    Status status =
-        SerializationTraits<RequestType>::Deserialize(param.request, &req);
+    Status status = SerializationTraits<RequestType>::Deserialize(
+        param.request.bbuf_ptr(), &req);
     ResponseType rsp;
     if (status.ok()) {
       status = func_(service_, param.server_context, &req, &rsp);
@@ -123,8 +124,8 @@ class ServerStreamingHandler : public MethodHandler {
 
   void RunHandler(const HandlerParameter& param) final {
     RequestType req;
-    Status status =
-        SerializationTraits<RequestType>::Deserialize(param.request, &req);
+    Status status = SerializationTraits<RequestType>::Deserialize(
+        param.request.bbuf_ptr(), &req);
 
     if (status.ok()) {
       ServerWriter<ResponseType> writer(param.call, param.server_context);
diff --git a/include/grpc++/impl/codegen/rpc_service_method.h b/include/grpc++/impl/codegen/rpc_service_method.h
index 7165774172..d356012ad6 100644
--- a/include/grpc++/impl/codegen/rpc_service_method.h
+++ b/include/grpc++/impl/codegen/rpc_service_method.h
@@ -25,14 +25,11 @@
 #include <memory>
 #include <vector>
 
+#include <grpc++/impl/codegen/byte_buffer.h>
 #include <grpc++/impl/codegen/config.h>
 #include <grpc++/impl/codegen/rpc_method.h>
 #include <grpc++/impl/codegen/status.h>
 
-extern "C" {
-struct grpc_byte_buffer;
-}
-
 namespace grpc {
 class ServerContext;
 class StreamContextInterface;
@@ -43,11 +40,14 @@ class MethodHandler {
   virtual ~MethodHandler() {}
   struct HandlerParameter {
     HandlerParameter(Call* c, ServerContext* context, grpc_byte_buffer* req)
-        : call(c), server_context(context), request(req) {}
+        : call(c), server_context(context) {
+      request.set_buffer(req);
+    }
+    ~HandlerParameter() { request.Release(); }
     Call* call;
     ServerContext* server_context;
-    // Handler required to grpc_byte_buffer_destroy this
-    grpc_byte_buffer* request;
+    // Handler required to destroy these contents
+    ByteBuffer request;
   };
   virtual void RunHandler(const HandlerParameter& param) = 0;
 };
diff --git a/include/grpc++/impl/codegen/serialization_traits.h b/include/grpc++/impl/codegen/serialization_traits.h
index b72d474126..4d91739cc4 100644
--- a/include/grpc++/impl/codegen/serialization_traits.h
+++ b/include/grpc++/impl/codegen/serialization_traits.h
@@ -24,17 +24,26 @@ namespace grpc {
 /// Defines how to serialize and deserialize some type.
 ///
 /// Used for hooking different message serialization API's into GRPC.
-/// Each SerializationTraits implementation must provide the following
-/// functions:
-///   static Status Serialize(const Message& msg,
-///                           grpc_byte_buffer** buffer,
-///                           bool* own_buffer);
-///   static Status Deserialize(grpc_byte_buffer* buffer,
-///                             Message* msg,
-///                             int max_receive_message_size);
+/// Each SerializationTraits<Message> implementation must provide the
+/// following functions:
+/// 1.  static Status Serialize(const Message& msg,
+///                             ByteBuffer* buffer,
+///                             bool* own_buffer);
+///     OR
+///     static Status Serialize(const Message& msg,
+///                             grpc_byte_buffer** buffer,
+///                             bool* own_buffer);
+///     The former is preferred; the latter is deprecated
 ///
-/// Serialize is required to convert message to a grpc_byte_buffer, and
-/// to store a pointer to that byte buffer at *buffer. *own_buffer should
+/// 2.  static Status Deserialize(ByteBuffer* buffer,
+///                               Message* msg);
+///     OR
+///     static Status Deserialize(grpc_byte_buffer* buffer,
+///                               Message* msg);
+///     The former is preferred; the latter is deprecated
+///
+/// Serialize is required to convert message to a ByteBuffer, and
+/// return that byte buffer through *buffer. *own_buffer should
 /// be set to true if the caller owns said byte buffer, or false if
 /// ownership is retained elsewhere.
 ///
diff --git a/include/grpc++/impl/codegen/slice.h b/include/grpc++/impl/codegen/slice.h
index e682bdef6a..c185bf4fd0 100644
--- a/include/grpc++/impl/codegen/slice.h
+++ b/include/grpc++/impl/codegen/slice.h
@@ -19,11 +19,89 @@
 #ifndef GRPCXX_IMPL_CODEGEN_SLICE_H
 #define GRPCXX_IMPL_CODEGEN_SLICE_H
 
+#include <grpc++/impl/codegen/config.h>
 #include <grpc++/impl/codegen/core_codegen_interface.h>
 #include <grpc++/impl/codegen/string_ref.h>
 
+#include <grpc/impl/codegen/slice.h>
+
 namespace grpc {
 
+/// A wrapper around \a grpc_slice.
+///
+/// A slice represents a contiguous reference counted array of bytes.
+/// It is cheap to take references to a slice, and it is cheap to create a
+/// slice pointing to a subset of another slice.
+class Slice final {
+ public:
+  /// Construct an empty slice.
+  Slice();
+  /// Destructor - drops one reference.
+  ~Slice();
+
+  enum AddRef { ADD_REF };
+  /// Construct a slice from \a slice, adding a reference.
+  Slice(grpc_slice slice, AddRef);
+
+  enum StealRef { STEAL_REF };
+  /// Construct a slice from \a slice, stealing a reference.
+  Slice(grpc_slice slice, StealRef);
+
+  /// Allocate a slice of specified size
+  Slice(size_t len);
+
+  /// Construct a slice from a copied buffer
+  Slice(const void* buf, size_t len);
+
+  /// Construct a slice from a copied string
+  Slice(const grpc::string& str);
+
+  enum StaticSlice { STATIC_SLICE };
+
+  /// Construct a slice from a static buffer
+  Slice(const void* buf, size_t len, StaticSlice);
+
+  /// Copy constructor, adds a reference.
+  Slice(const Slice& other);
+
+  /// Assignment, reference count is unchanged.
+  Slice& operator=(Slice other) {
+    std::swap(slice_, other.slice_);
+    return *this;
+  }
+
+  /// Create a slice pointing at some data. Calls malloc to allocate a refcount
+  /// for the object, and arranges that destroy will be called with the
+  /// user data pointer passed in at destruction. Can be the same as buf or
+  /// different (e.g., if data is part of a larger structure that must be
+  /// destroyed when the data is no longer needed)
+  Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data);
+
+  /// Specialization of above for common case where buf == user_data
+  Slice(void* buf, size_t len, void (*destroy)(void*))
+      : Slice(buf, len, destroy, buf) {}
+
+  /// Similar to the above but has a destroy that also takes slice length
+  Slice(void* buf, size_t len, void (*destroy)(void*, size_t));
+
+  /// Byte size.
+  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
+
+  /// Raw pointer to the beginning (first element) of the slice.
+  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
+
+  /// Raw pointer to the end (one byte \em past the last element) of the slice.
+  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
+
+  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
+  grpc_slice c_slice() const;
+
+ private:
+  friend class ByteBuffer;
+
+  grpc_slice slice_;
+};
+
 inline grpc::string_ref StringRefFromSlice(const grpc_slice* slice) {
   return grpc::string_ref(
       reinterpret_cast<const char*>(GRPC_SLICE_START_PTR(*slice)),
diff --git a/include/grpc++/impl/codegen/sync_stream.h b/include/grpc++/impl/codegen/sync_stream.h
index 3fa208963d..c1784f1820 100644
--- a/include/grpc++/impl/codegen/sync_stream.h
+++ b/include/grpc++/impl/codegen/sync_stream.h
@@ -244,7 +244,7 @@ class ClientWriterInterface : public ClientStreamingInterface,
                               public WriterInterface<W> {
  public:
   /// Half close writing from the client. (signal that the stream of messages
-  /// coming from the clinet is complete).
+  /// coming from the client is complete).
   /// Blocks until currently-pending writes are completed.
   /// Thread safe with respect to \a ReaderInterface::Read operations only
   ///
@@ -375,7 +375,7 @@ class ClientReaderWriterInterface : public ClientStreamingInterface,
   virtual void WaitForInitialMetadata() = 0;
 
   /// Half close writing from the client. (signal that the stream of messages
-  /// coming from the clinet is complete).
+  /// coming from the client is complete).
   /// Blocks until currently-pending writes are completed.
   /// Thread-safe with respect to \a ReaderInterface::Read
   ///
diff --git a/include/grpc++/server_builder.h b/include/grpc++/server_builder.h
index eafd63619d..bbf45b3e74 100644
--- a/include/grpc++/server_builder.h
+++ b/include/grpc++/server_builder.h
@@ -136,8 +136,10 @@ class ServerBuilder {
   /// It can be invoked multiple times.
   ///
   /// \param addr_uri The address to try to bind to the server in URI form. If
-  /// the scheme name is omitted, "dns:///" is assumed. Valid values include
-  /// dns:///localhost:1234, / 192.168.1.1:31416, dns:///[::1]:27182, etc.).
+  /// the scheme name is omitted, "dns:///" is assumed. To bind to any address,
+  /// please use IPv6 any, i.e., [::]:<port>, which also accepts IPv4
+  /// connections.  Valid values include dns:///localhost:1234, /
+  /// 192.168.1.1:31416, dns:///[::1]:27182, etc.).
   /// \params creds The credentials associated with the server.
   /// \param selected_port[out] If not `nullptr`, gets populated with the port
   /// number bound to the \a grpc::Server for the corresponding endpoint after
@@ -151,7 +153,8 @@ class ServerBuilder {
   /// Add a completion queue for handling asynchronous services.
   ///
   /// Caller is required to shutdown the server prior to shutting down the
-  /// returned completion queue. A typical usage scenario:
+  /// returned completion queue. Caller is also required to drain the
+  /// completion queue after shutting it down. A typical usage scenario:
   ///
   /// // While building the server:
   /// ServerBuilder builder;
@@ -162,6 +165,10 @@ class ServerBuilder {
   /// // While shutting down the server;
   /// server_->Shutdown();
   /// cq_->Shutdown();  // Always *after* the associated server's Shutdown()!
+  /// // Drain the cq_ that was created
+  /// void* ignored_tag;
+  /// bool ignored_ok;
+  /// while (cq_->Next(&ignored_tag, &ignored_ok)) { }
   ///
   /// \param is_frequently_polled This is an optional parameter to inform gRPC
   /// library about whether this completion queue would be frequently polled
diff --git a/include/grpc++/support/byte_buffer.h b/include/grpc++/support/byte_buffer.h
index df16c6a75e..81fa3b0a18 100644
--- a/include/grpc++/support/byte_buffer.h
+++ b/include/grpc++/support/byte_buffer.h
@@ -19,6 +19,7 @@
 #ifndef GRPCXX_SUPPORT_BYTE_BUFFER_H
 #define GRPCXX_SUPPORT_BYTE_BUFFER_H
 
+#include <grpc++/impl/codegen/byte_buffer.h>
 #include <grpc++/impl/serialization_traits.h>
 #include <grpc++/support/config.h>
 #include <grpc++/support/slice.h>
@@ -27,71 +28,4 @@
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
 
-#include <vector>
-
-namespace grpc {
-
-/// A sequence of bytes.
-class ByteBuffer final {
- public:
-  /// Constuct an empty buffer.
-  ByteBuffer() : buffer_(nullptr) {}
-
-  /// Construct buffer from \a slices, of which there are \a nslices.
-  ByteBuffer(const Slice* slices, size_t nslices);
-
-  /// Constuct a byte buffer by referencing elements of existing buffer
-  /// \a buf. Wrapper of core function grpc_byte_buffer_copy
-  ByteBuffer(const ByteBuffer& buf);
-
-  ~ByteBuffer();
-
-  ByteBuffer& operator=(const ByteBuffer&);
-
-  /// Dump (read) the buffer contents into \a slices.
-  Status Dump(std::vector<Slice>* slices) const;
-
-  /// Remove all data.
-  void Clear();
-
-  /// Buffer size in bytes.
-  size_t Length() const;
-
-  /// Swap the state of *this and *other.
-  void Swap(ByteBuffer* other);
-
- private:
-  friend class SerializationTraits<ByteBuffer, void>;
-
-  // takes ownership
-  void set_buffer(grpc_byte_buffer* buf) {
-    if (buffer_) {
-      Clear();
-    }
-    buffer_ = buf;
-  }
-
-  // For \a SerializationTraits's usage.
-  grpc_byte_buffer* buffer() const { return buffer_; }
-
-  grpc_byte_buffer* buffer_;
-};
-
-template <>
-class SerializationTraits<ByteBuffer, void> {
- public:
-  static Status Deserialize(grpc_byte_buffer* byte_buffer, ByteBuffer* dest) {
-    dest->set_buffer(byte_buffer);
-    return Status::OK;
-  }
-  static Status Serialize(const ByteBuffer& source, grpc_byte_buffer** buffer,
-                          bool* own_buffer) {
-    *buffer = grpc_byte_buffer_copy(source.buffer());
-    *own_buffer = true;
-    return Status::OK;
-  }
-};
-
-}  // namespace grpc
-
 #endif  // GRPCXX_SUPPORT_BYTE_BUFFER_H
diff --git a/include/grpc++/support/slice.h b/include/grpc++/support/slice.h
index bbf97f280e..10db10d79c 100644
--- a/include/grpc++/support/slice.h
+++ b/include/grpc++/support/slice.h
@@ -19,86 +19,8 @@
 #ifndef GRPCXX_SUPPORT_SLICE_H
 #define GRPCXX_SUPPORT_SLICE_H
 
+#include <grpc++/impl/codegen/slice.h>
 #include <grpc++/support/config.h>
 #include <grpc/slice.h>
 
-namespace grpc {
-
-/// A wrapper around \a grpc_slice.
-///
-/// A slice represents a contiguous reference counted array of bytes.
-/// It is cheap to take references to a slice, and it is cheap to create a
-/// slice pointing to a subset of another slice.
-class Slice final {
- public:
-  /// Construct an empty slice.
-  Slice();
-  /// Destructor - drops one reference.
-  ~Slice();
-
-  enum AddRef { ADD_REF };
-  /// Construct a slice from \a slice, adding a reference.
-  Slice(grpc_slice slice, AddRef);
-
-  enum StealRef { STEAL_REF };
-  /// Construct a slice from \a slice, stealing a reference.
-  Slice(grpc_slice slice, StealRef);
-
-  /// Allocate a slice of specified size
-  Slice(size_t len);
-
-  /// Construct a slice from a copied buffer
-  Slice(const void* buf, size_t len);
-
-  /// Construct a slice from a copied string
-  Slice(const grpc::string& str);
-
-  enum StaticSlice { STATIC_SLICE };
-
-  /// Construct a slice from a static buffer
-  Slice(const void* buf, size_t len, StaticSlice);
-
-  /// Copy constructor, adds a reference.
-  Slice(const Slice& other);
-
-  /// Assignment, reference count is unchanged.
-  Slice& operator=(Slice other) {
-    std::swap(slice_, other.slice_);
-    return *this;
-  }
-
-  /// Create a slice pointing at some data. Calls malloc to allocate a refcount
-  /// for the object, and arranges that destroy will be called with the
-  /// user data pointer passed in at destruction. Can be the same as buf or
-  /// different (e.g., if data is part of a larger structure that must be
-  /// destroyed when the data is no longer needed)
-  Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data);
-
-  /// Specialization of above for common case where buf == user_data
-  Slice(void* buf, size_t len, void (*destroy)(void*))
-      : Slice(buf, len, destroy, buf) {}
-
-  /// Similar to the above but has a destroy that also takes slice length
-  Slice(void* buf, size_t len, void (*destroy)(void*, size_t));
-
-  /// Byte size.
-  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
-
-  /// Raw pointer to the beginning (first element) of the slice.
-  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
-
-  /// Raw pointer to the end (one byte \em past the last element) of the slice.
-  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
-
-  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
-  grpc_slice c_slice() const { return grpc_slice_ref(slice_); }
-
- private:
-  friend class ByteBuffer;
-
-  grpc_slice slice_;
-};
-
-}  // namespace grpc
-
 #endif  // GRPCXX_SUPPORT_SLICE_H
diff --git a/include/grpc/byte_buffer.h b/include/grpc/byte_buffer.h
index 55e191da31..7669582af2 100644
--- a/include/grpc/byte_buffer.h
+++ b/include/grpc/byte_buffer.h
@@ -19,69 +19,7 @@
 #ifndef GRPC_BYTE_BUFFER_H
 #define GRPC_BYTE_BUFFER_H
 
-#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/impl/codegen/byte_buffer.h>
 #include <grpc/slice_buffer.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** Returns a RAW byte buffer instance over the given slices (up to \a nslices).
- *
- * Increases the reference count for all \a slices processed. The user is
- * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
-GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(grpc_slice *slices,
-                                                      size_t nslices);
-
-/** Returns a *compressed* RAW byte buffer instance over the given slices (up to
- * \a nslices). The \a compression argument defines the compression algorithm
- * used to generate the data in \a slices.
- *
- * Increases the reference count for all \a slices processed. The user is
- * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
-GRPCAPI grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
-    grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
-
-/** Copies input byte buffer \a bb.
- *
- * Increases the reference count of all the source slices. The user is
- * responsible for calling grpc_byte_buffer_destroy over the returned copy. */
-GRPCAPI grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb);
-
-/** Returns the size of the given byte buffer, in bytes. */
-GRPCAPI size_t grpc_byte_buffer_length(grpc_byte_buffer *bb);
-
-/** Destroys \a byte_buffer deallocating all its memory. */
-GRPCAPI void grpc_byte_buffer_destroy(grpc_byte_buffer *byte_buffer);
-
-/** Reader for byte buffers. Iterates over slices in the byte buffer */
-struct grpc_byte_buffer_reader;
-typedef struct grpc_byte_buffer_reader grpc_byte_buffer_reader;
-
-/** Initialize \a reader to read over \a buffer.
- * Returns 1 upon success, 0 otherwise. */
-GRPCAPI int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
-                                         grpc_byte_buffer *buffer);
-
-/** Cleanup and destroy \a reader */
-GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader);
-
-/** Updates \a slice with the next piece of data from from \a reader and returns
- * 1. Returns 0 at the end of the stream. Caller is responsible for calling
- * grpc_slice_unref on the result. */
-GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
-                                         grpc_slice *slice);
-
-/** Merge all data from \a reader into single slice */
-GRPCAPI grpc_slice
-grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader *reader);
-
-/** Returns a RAW byte buffer instance from the output of \a reader. */
-GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_from_reader(
-    grpc_byte_buffer_reader *reader);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif /* GRPC_BYTE_BUFFER_H */
diff --git a/include/grpc/compression.h b/include/grpc/compression.h
index d47074c9b7..13a8dd66ad 100644
--- a/include/grpc/compression.h
+++ b/include/grpc/compression.h
@@ -30,25 +30,42 @@
 extern "C" {
 #endif
 
-/** Parses the first \a name_length bytes of \a name as a
- * grpc_compression_algorithm instance, updating \a algorithm. Returns 1 upon
- * success, 0 otherwise. */
+/** Parses the \a slice as a grpc_compression_algorithm instance and updating \a
+ * algorithm. Returns 1 upon success, 0 otherwise. */
 GRPCAPI int grpc_compression_algorithm_parse(
     grpc_slice value, grpc_compression_algorithm *algorithm);
 
+/** Parses the \a slice as a grpc_stream_compression_algorithm instance and
+ * updating \a algorithm. Returns 1 upon success, 0 otherwise. */
+int grpc_stream_compression_algorithm_parse(
+    grpc_slice name, grpc_stream_compression_algorithm *algorithm);
+
 /** Updates \a name with the encoding name corresponding to a valid \a
  * algorithm. Note that \a name is statically allocated and must *not* be freed.
  * Returns 1 upon success, 0 otherwise. */
 GRPCAPI int grpc_compression_algorithm_name(
-    grpc_compression_algorithm algorithm, char **name);
+    grpc_compression_algorithm algorithm, const char **name);
+
+/** Updates \a name with the encoding name corresponding to a valid \a
+ * algorithm. Note that \a name is statically allocated and must *not* be freed.
+ * Returns 1 upon success, 0 otherwise. */
+GRPCAPI int grpc_stream_compression_algorithm_name(
+    grpc_stream_compression_algorithm algorithm, const char **name);
 
 /** Returns the compression algorithm corresponding to \a level for the
  * compression algorithms encoded in the \a accepted_encodings bitset.
  *
- * It abort()s for unknown levels . */
+ * It abort()s for unknown levels. */
 GRPCAPI grpc_compression_algorithm grpc_compression_algorithm_for_level(
     grpc_compression_level level, uint32_t accepted_encodings);
 
+/** Returns the stream compression algorithm corresponding to \a level for the
+ * compression algorithms encoded in the \a accepted_stream_encodings bitset.
+ * It abort()s for unknown levels. */
+GRPCAPI grpc_stream_compression_algorithm
+grpc_stream_compression_algorithm_for_level(grpc_stream_compression_level level,
+                                            uint32_t accepted_stream_encodings);
+
 GRPCAPI void grpc_compression_options_init(grpc_compression_options *opts);
 
 /** Mark \a algorithm as enabled in \a opts. */
@@ -63,6 +80,11 @@ GRPCAPI void grpc_compression_options_disable_algorithm(
 GRPCAPI int grpc_compression_options_is_algorithm_enabled(
     const grpc_compression_options *opts, grpc_compression_algorithm algorithm);
 
+/** Returns true if \a algorithm is marked as enabled in \a opts. */
+GRPCAPI int grpc_compression_options_is_stream_compression_algorithm_enabled(
+    const grpc_compression_options *opts,
+    grpc_stream_compression_algorithm algorithm);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 943d6e4891..fab7d438aa 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -143,21 +143,24 @@ GRPCAPI void grpc_completion_queue_shutdown(grpc_completion_queue *cq);
     drained and no threads are executing grpc_completion_queue_next */
 GRPCAPI void grpc_completion_queue_destroy(grpc_completion_queue *cq);
 
-/** Create a completion queue alarm instance associated to \a cq.
+/** Create a completion queue alarm instance */
+GRPCAPI grpc_alarm *grpc_alarm_create(void *reserved);
+
+/** Set a completion queue alarm instance associated to \a cq.
  *
  * Once the alarm expires (at \a deadline) or it's cancelled (see \a
  * grpc_alarm_cancel), an event with tag \a tag will be added to \a cq. If the
  * alarm expired, the event's success bit will be true, false otherwise (ie,
  * upon cancellation). */
-GRPCAPI grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq,
-                                      gpr_timespec deadline, void *tag);
+GRPCAPI void grpc_alarm_set(grpc_alarm *alarm, grpc_completion_queue *cq,
+                            gpr_timespec deadline, void *tag, void *reserved);
 
 /** Cancel a completion queue alarm. Calling this function over an alarm that
  * has already fired has no effect. */
-GRPCAPI void grpc_alarm_cancel(grpc_alarm *alarm);
+GRPCAPI void grpc_alarm_cancel(grpc_alarm *alarm, void *reserved);
 
 /** Destroy the given completion queue alarm, cancelling it in the process. */
-GRPCAPI void grpc_alarm_destroy(grpc_alarm *alarm);
+GRPCAPI void grpc_alarm_destroy(grpc_alarm *alarm, void *reserved);
 
 /** Check the connectivity state of a channel. */
 GRPCAPI grpc_connectivity_state grpc_channel_check_connectivity_state(
@@ -178,6 +181,9 @@ GRPCAPI void grpc_channel_watch_connectivity_state(
     grpc_channel *channel, grpc_connectivity_state last_observed_state,
     gpr_timespec deadline, grpc_completion_queue *cq, void *tag);
 
+/** Check whether a grpc channel supports connectivity watcher */
+GRPCAPI int grpc_channel_support_connectivity_watcher(grpc_channel *channel);
+
 /** Create a call given a grpc_channel, in order to call 'method'. All
     completions are sent to 'completion_queue'. 'method' and 'host' need only
     live through the invocation of this function.
diff --git a/include/grpc/impl/codegen/atm.h b/include/grpc/impl/codegen/atm.h
index 2cfd22ab63..764bee5272 100644
--- a/include/grpc/impl/codegen/atm.h
+++ b/include/grpc/impl/codegen/atm.h
@@ -46,6 +46,7 @@
 
    // Atomically return *p, with acquire semantics.
    gpr_atm gpr_atm_acq_load(gpr_atm *p);
+   gpr_atm gpr_atm_no_barrier_load(gpr_atm *p);
 
    // Atomically set *p = value, with release semantics.
    void gpr_atm_rel_store(gpr_atm *p, gpr_atm value);
diff --git a/include/grpc/impl/codegen/byte_buffer.h b/include/grpc/impl/codegen/byte_buffer.h
new file mode 100644
index 0000000000..fc33305713
--- /dev/null
+++ b/include/grpc/impl/codegen/byte_buffer.h
@@ -0,0 +1,86 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Returns a RAW byte buffer instance over the given slices (up to \a nslices).
+ *
+ * Increases the reference count for all \a slices processed. The user is
+ * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
+GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(grpc_slice *slices,
+                                                      size_t nslices);
+
+/** Returns a *compressed* RAW byte buffer instance over the given slices (up to
+ * \a nslices). The \a compression argument defines the compression algorithm
+ * used to generate the data in \a slices.
+ *
+ * Increases the reference count for all \a slices processed. The user is
+ * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
+GRPCAPI grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
+    grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
+
+/** Copies input byte buffer \a bb.
+ *
+ * Increases the reference count of all the source slices. The user is
+ * responsible for calling grpc_byte_buffer_destroy over the returned copy. */
+GRPCAPI grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb);
+
+/** Returns the size of the given byte buffer, in bytes. */
+GRPCAPI size_t grpc_byte_buffer_length(grpc_byte_buffer *bb);
+
+/** Destroys \a byte_buffer deallocating all its memory. */
+GRPCAPI void grpc_byte_buffer_destroy(grpc_byte_buffer *byte_buffer);
+
+/** Reader for byte buffers. Iterates over slices in the byte buffer */
+struct grpc_byte_buffer_reader;
+typedef struct grpc_byte_buffer_reader grpc_byte_buffer_reader;
+
+/** Initialize \a reader to read over \a buffer.
+ * Returns 1 upon success, 0 otherwise. */
+GRPCAPI int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader,
+                                         grpc_byte_buffer *buffer);
+
+/** Cleanup and destroy \a reader */
+GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader);
+
+/** Updates \a slice with the next piece of data from from \a reader and returns
+ * 1. Returns 0 at the end of the stream. Caller is responsible for calling
+ * grpc_slice_unref on the result. */
+GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
+                                         grpc_slice *slice);
+
+/** Merge all data from \a reader into single slice */
+GRPCAPI grpc_slice
+grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader *reader);
+
+/** Returns a RAW byte buffer instance from the output of \a reader. */
+GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_from_reader(
+    grpc_byte_buffer_reader *reader);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_H */
diff --git a/include/grpc/impl/codegen/compression_types.h b/include/grpc/impl/codegen/compression_types.h
index f1b2de3f7d..4419e2a447 100644
--- a/include/grpc/impl/codegen/compression_types.h
+++ b/include/grpc/impl/codegen/compression_types.h
@@ -29,6 +29,11 @@ extern "C" {
  * algorithm */
 #define GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
   "grpc-internal-encoding-request"
+/** To be used as initial metadata key for the request of a concrete stream
+ * compression
+ * algorithm */
+#define GRPC_STREAM_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
+  "grpc-internal-stream-encoding-request"
 
 /** To be used in channel arguments.
  *
@@ -38,9 +43,17 @@ extern "C" {
  * Its value is an int from the \a grpc_compression_algorithm enum. */
 #define GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
   "grpc.default_compression_algorithm"
+/** Default stream compression algorithm for the channel.
+ * Its value is an int from the \a grpc_stream_compression_algorithm enum. */
+#define GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
+  "grpc.default_stream_compression_algorithm"
 /** Default compression level for the channel.
  * Its value is an int from the \a grpc_compression_level enum. */
 #define GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL "grpc.default_compression_level"
+/** Default stream compression level for the channel.
+ * Its value is an int from the \a grpc_stream_compression_level enum. */
+#define GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_LEVEL \
+  "grpc.default_stream_compression_level"
 /** Compression algorithms supported by the channel.
  * Its value is a bitset (an int). Bits correspond to algorithms in \a
  * grpc_compression_algorithm. For example, its LSB corresponds to
@@ -50,6 +63,15 @@ extern "C" {
  * be ignored). */
 #define GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
   "grpc.compression_enabled_algorithms_bitset"
+/** Stream compression algorithms supported by the channel.
+ * Its value is a bitset (an int). Bits correspond to algorithms in \a
+ * grpc_stream_compression_algorithm. For example, its LSB corresponds to
+ * GRPC_STREAM_COMPRESS_NONE, the next bit to GRPC_STREAM_COMPRESS_DEFLATE, etc.
+ * Unset bits disable support for the algorithm. By default all algorithms are
+ * supported. It's not possible to disable GRPC_STREAM_COMPRESS_NONE (the
+ * attempt will be ignored). */
+#define GRPC_STREAM_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
+  "grpc.stream_compression_enabled_algorithms_bitset"
 /** \} */
 
 /** The various compression algorithms supported by gRPC */
@@ -61,6 +83,13 @@ typedef enum {
   GRPC_COMPRESS_ALGORITHMS_COUNT
 } grpc_compression_algorithm;
 
+/** Stream compresssion algorithms supported by gRPC */
+typedef enum {
+  GRPC_STREAM_COMPRESS_NONE = 0,
+  GRPC_STREAM_COMPRESS_GZIP,
+  GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT
+} grpc_stream_compression_algorithm;
+
 /** Compression levels allow a party with knowledge of its peer's accepted
  * encodings to request compression in an abstract way. The level-algorithm
  * mapping is performed internally and depends on the peer's supported
@@ -73,23 +102,42 @@ typedef enum {
   GRPC_COMPRESS_LEVEL_COUNT
 } grpc_compression_level;
 
+/** Compression levels for stream compression algorithms */
+typedef enum {
+  GRPC_STREAM_COMPRESS_LEVEL_NONE = 0,
+  GRPC_STREAM_COMPRESS_LEVEL_LOW,
+  GRPC_STREAM_COMPRESS_LEVEL_MED,
+  GRPC_STREAM_COMPRESS_LEVEL_HIGH,
+  GRPC_STREAM_COMPRESS_LEVEL_COUNT
+} grpc_stream_compression_level;
+
 typedef struct grpc_compression_options {
   /** All algs are enabled by default. This option corresponds to the channel
    * argument key behind \a GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET
    */
   uint32_t enabled_algorithms_bitset;
+  uint32_t enabled_stream_compression_algorithms_bitset;
 
-  /** The default channel compression level. It'll be used in the absence of
-   * call specific settings. This option corresponds to the channel argument key
-   * behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL. If present, takes
-   * precedence over \a default_algorithm.
+  /** The default message-wise compression level. It'll be used in the absence
+   * of * call specific settings. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL. If present,
+   * takes precedence over \a default_algorithm and \a
+   * default_stream_compression_algorithm.
    * TODO(dgq): currently only available for server channels. */
   struct grpc_compression_options_default_level {
     int is_set;
     grpc_compression_level level;
   } default_level;
 
-  /** The default channel compression algorithm. It'll be used in the absence of
+  /** The default stream compression level. It'll be used in the absence of call
+   * specefic settings. If present, takes precedence over \a default_level,
+   * \a default_algorithm and \a default_stream_compression_algorithm. */
+  struct grpc_stream_compression_options_default_level {
+    int is_set;
+    grpc_stream_compression_level level;
+  } default_stream_compression_level;
+
+  /** The default message compression algorithm. It'll be used in the absence of
    * call specific settings. This option corresponds to the channel argument key
    * behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM. */
   struct grpc_compression_options_default_algorithm {
@@ -97,6 +145,16 @@ typedef struct grpc_compression_options {
     grpc_compression_algorithm algorithm;
   } default_algorithm;
 
+  /** The default stream compression algorithm. It'll be used in the absence of
+   * call specific settings. If present, takes precedence over \a
+   * default_algorithm. This option corresponds to the channel
+   * argument key behind \a GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM.
+   */
+  struct grpc_stream_compression_options_default_algorithm {
+    int is_set;
+    grpc_stream_compression_algorithm algorithm;
+  } default_stream_compression_algorithm;
+
 } grpc_compression_options;
 
 #ifdef __cplusplus
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index 8813ec8f35..90f03f49a3 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -188,9 +188,14 @@ typedef struct {
 #define GRPC_ARG_HTTP2_MAX_FRAME_SIZE "grpc.http2.max_frame_size"
 /** Should BDP probing be performed? */
 #define GRPC_ARG_HTTP2_BDP_PROBE "grpc.http2.bdp_probe"
-/** Minimum time (in milliseconds) between successive ping frames being sent */
-#define GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS \
+/** Minimum time between sending successive ping frames without receiving any
+    data frame, Int valued, milliseconds. */
+#define GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS \
   "grpc.http2.min_time_between_pings_ms"
+/** Minimum allowed time between receiving successive ping frames without
+    sending any data frame. Int valued, milliseconds */
+#define GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_ping_interval_without_data_ms"
 /** Channel arg to override the http2 :scheme header */
 #define GRPC_ARG_HTTP2_SCHEME "grpc.http2_scheme"
 /** How many pings can we send before needing to send a data frame or header
@@ -202,10 +207,6 @@ typedef struct {
     closing the transport? (0 indicates that the server can bear an infinite
     number of misbehaving pings) */
 #define GRPC_ARG_HTTP2_MAX_PING_STRIKES "grpc.http2.max_ping_strikes"
-/** Minimum allowed time between two pings without sending any data frame. Int
-    valued, seconds */
-#define GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS \
-  "grpc.http2.min_ping_interval_without_data_ms"
 /** How much data are we willing to queue up per stream if
     GRPC_WRITE_BUFFER_HINT is set? This is an upper bound */
 #define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
@@ -355,8 +356,11 @@ typedef enum grpc_call_error {
 /** Force compression to be disabled for a particular write
     (start_write/add_metadata). Illegal on invoke/accept. */
 #define GRPC_WRITE_NO_COMPRESS (0x00000002u)
+/** Force this message to be written to the socket before completing it */
+#define GRPC_WRITE_THROUGH (0x00000004u)
 /** Mask of all valid flags. */
-#define GRPC_WRITE_USED_MASK (GRPC_WRITE_BUFFER_HINT | GRPC_WRITE_NO_COMPRESS)
+#define GRPC_WRITE_USED_MASK \
+  (GRPC_WRITE_BUFFER_HINT | GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_THROUGH)
 
 /** Initial metadata flags */
 /** Signal that the call is idempotent */
@@ -377,7 +381,7 @@ typedef enum grpc_call_error {
    GRPC_INITIAL_METADATA_WAIT_FOR_READY |                \
    GRPC_INITIAL_METADATA_CACHEABLE_REQUEST |             \
    GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET | \
-   GRPC_INITIAL_METADATA_CORKED)
+   GRPC_INITIAL_METADATA_CORKED | GRPC_WRITE_THROUGH)
 
 /** A single metadata element */
 typedef struct grpc_metadata {
@@ -505,8 +509,17 @@ typedef struct grpc_op {
         uint8_t is_set;
         grpc_compression_level level;
       } maybe_compression_level;
+      struct grpc_op_send_initial_metadata_maybe_stream_compression_level {
+        uint8_t is_set;
+        grpc_stream_compression_level level;
+      } maybe_stream_compression_level;
     } send_initial_metadata;
     struct grpc_op_send_message {
+      /** This op takes ownership of the slices in send_message.  After
+       * a call completes, the contents of send_message are not guaranteed
+       * and likely empty.  The original owner should still call
+       * grpc_byte_buffer_destroy() on this object however.
+       */
       struct grpc_byte_buffer *send_message;
     } send_message;
     struct grpc_op_send_status_from_server {
diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h
index e84a75d295..1904c636f7 100644
--- a/include/grpc/impl/codegen/port_platform.h
+++ b/include/grpc/impl/codegen/port_platform.h
@@ -409,4 +409,15 @@ typedef unsigned __int64 uint64_t;
 #define CENSUSAPI GRPCAPI
 #endif
 
+#ifndef GPR_ATTRIBUTE_NO_TSAN /* (1) */
+#if defined(__has_feature)
+#if __has_feature(thread_sanitizer)
+#define GPR_ATTRIBUTE_NO_TSAN __attribute__((no_sanitize("thread")))
+#endif                        /* __has_feature(thread_sanitizer) */
+#endif                        /* defined(__has_feature) */
+#ifndef GPR_ATTRIBUTE_NO_TSAN /* (2) */
+#define GPR_ATTRIBUTE_NO_TSAN
+#endif /* GPR_ATTRIBUTE_NO_TSAN (2) */
+#endif /* GPR_ATTRIBUTE_NO_TSAN (1) */
+
 #endif /* GRPC_IMPL_CODEGEN_PORT_PLATFORM_H */
diff --git a/include/grpc/impl/codegen/slice.h b/include/grpc/impl/codegen/slice.h
index a04c683a55..128fa8e121 100644
--- a/include/grpc/impl/codegen/slice.h
+++ b/include/grpc/impl/codegen/slice.h
@@ -62,7 +62,12 @@ typedef struct grpc_slice_refcount {
   struct grpc_slice_refcount *sub_refcount;
 } grpc_slice_refcount;
 
-#define GRPC_SLICE_INLINED_SIZE (sizeof(size_t) + sizeof(uint8_t *) - 1)
+/* Inlined half of grpc_slice is allowed to expand the size of the overall type
+   by this many bytes */
+#define GRPC_SLICE_INLINE_EXTRA_SIZE sizeof(void *)
+
+#define GRPC_SLICE_INLINED_SIZE \
+  (sizeof(size_t) + sizeof(uint8_t *) - 1 + GRPC_SLICE_INLINE_EXTRA_SIZE)
 
 /** A grpc_slice s, if initialized, represents the byte range
    s.bytes[0..s.length-1].
diff --git a/include/grpc/impl/codegen/sync.h b/include/grpc/impl/codegen/sync.h
index de4e99be63..6cdb0c5153 100644
--- a/include/grpc/impl/codegen/sync.h
+++ b/include/grpc/impl/codegen/sync.h
@@ -49,7 +49,9 @@ extern "C" {
 #include <grpc/impl/codegen/sync_posix.h>
 #elif defined(GPR_WINDOWS)
 #include <grpc/impl/codegen/sync_windows.h>
-#elif !defined(GPR_CUSTOM_SYNC)
+#elif defined(GPR_CUSTOM_SYNC)
+#include <grpc/impl/codegen/sync_custom.h>
+#else
 #error Unable to determine platform for sync
 #endif
 
diff --git a/include/grpc/impl/codegen/sync_custom.h b/include/grpc/impl/codegen/sync_custom.h
new file mode 100644
index 0000000000..0840ad26bf
--- /dev/null
+++ b/include/grpc/impl/codegen/sync_custom.h
@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+#define GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+
+#include <grpc/impl/codegen/sync_generic.h>
+
+/* Users defining GPR_CUSTOM_SYNC need to define the following macros. */
+
+#ifdef GPR_CUSTOM_SYNC
+
+typedef GPR_CUSTOM_MU_TYPE gpr_mu;
+typedef GPR_CUSTOM_CV_TYPE gpr_cv;
+typedef GPR_CUSTOM_ONCE_TYPE gpr_once;
+
+#define GPR_ONCE_INIT GPR_CUSTOM_ONCE_INIT
+
+#endif
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H */
diff --git a/include/grpc/slice.h b/include/grpc/slice.h
index 9d2a9fbc81..3f3cff1408 100644
--- a/include/grpc/slice.h
+++ b/include/grpc/slice.h
@@ -65,11 +65,7 @@ GPRAPI grpc_slice grpc_slice_new_with_len(void *p, size_t len,
 GPRAPI grpc_slice grpc_slice_malloc(size_t length);
 GPRAPI grpc_slice grpc_slice_malloc_large(size_t length);
 
-#define GRPC_SLICE_MALLOC(len)                                    \
-  ((len) <= GRPC_SLICE_INLINED_SIZE                               \
-       ? (grpc_slice){.refcount = NULL,                           \
-                      .data.inlined = {.length = (uint8_t)(len)}} \
-       : grpc_slice_malloc_large((len)))
+#define GRPC_SLICE_MALLOC(len) grpc_slice_malloc(len)
 
 /** Intern a slice:
 
diff --git a/vsprojects/dummy.c b/include/grpc/support/sync_custom.h
index 2e85c40975..b575f5e002 100644
--- a/vsprojects/dummy.c
+++ b/include/grpc/support/sync_custom.h
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015 gRPC authors.
+ * Copyright 2017 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,3 +16,9 @@
  *
  */
 
+#ifndef GRPC_SUPPORT_SYNC_CUSTOM_H
+#define GRPC_SUPPORT_SYNC_CUSTOM_H
+
+#include <grpc/impl/codegen/sync_custom.h>
+
+#endif /* GRPC_SUPPORT_SYNC_CUSTOM_H */
diff --git a/package.xml b/package.xml
index 6e50badfc2..0eea122b24 100644
--- a/package.xml
+++ b/package.xml
@@ -10,7 +10,7 @@
   <email>grpc-packages@google.com</email>
   <active>yes</active>
  </lead>
- <date>2017-05-22</date>
+ <date>2017-08-24</date>
  <time>16:06:07</time>
  <version>
   <release>1.7.0dev</release>
@@ -22,13 +22,12 @@
  </stability>
  <license>Apache 2.0</license>
  <notes>
-- Fixed some memory leaks #9559, #10996
-- Disabled cares dependency from gRPC C Core #10940
-- De-coupled protobuf dependency #11112
-- Fixed extension reported version #10842
-- Added config.w32 for Windows support #8161
-- Fixed PHP distrib test after cc files were added #11193
-- Fixed protoc plugin comment escape bug #11025
+- Channel are now by default persistent #11878
+- Some bug fixes from 1.4 branch #12109, #12123
+- Fixed hang bug when fork() was used #11814
+- License changed to Apache 2.0
+- Added support for php_namespace option in codegen plugin #11886
+- Updated gRPC C Core library version 1.6
  </notes>
  <contents>
   <dir baseinstalldir="/" name="/">
@@ -73,6 +72,7 @@
     <file baseinstalldir="/" name="include/grpc/support/string_util.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/subprocess.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/sync.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/support/sync_custom.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/sync_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/sync_windows.h" role="src" />
@@ -91,6 +91,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_custom.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_windows.h" role="src" />
@@ -109,7 +110,6 @@
     <file baseinstalldir="/" name="src/core/lib/support/stack_lockfree.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string_windows.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/thd_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/time_precise.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/tmpfile.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/profiling/basic_timers.c" role="src" />
@@ -158,6 +158,7 @@
     <file baseinstalldir="/" name="src/core/lib/support/tmpfile_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/tmpfile_windows.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/wrap_memcpy.c" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/connectivity_state.h" role="src" />
@@ -174,6 +175,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_custom.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_windows.h" role="src" />
@@ -273,9 +275,14 @@
     <file baseinstalldir="/" name="src/core/lib/compression/algorithm_metadata.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/message_compress.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/stream_compression.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/compression/stream_compression_gzip.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/compression/stream_compression_identity.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/debug/stats.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/debug/stats_data.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/format_request.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/httpcli.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/parser.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/call_combiner.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/closure.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/combiner.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint.h" role="src" />
@@ -283,8 +290,6 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/error.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/error_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll1_linux.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_thread_pool_linux.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epollex_linux.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epollsig_linux.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.h" role="src" />
@@ -383,11 +388,15 @@
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h" role="src" />
+    <file baseinstalldir="/" name="third_party/nanopb/pb.h" role="src" />
+    <file baseinstalldir="/" name="third_party/nanopb/pb_common.h" role="src" />
+    <file baseinstalldir="/" name="third_party/nanopb/pb_decode.h" role="src" />
+    <file baseinstalldir="/" name="third_party/nanopb/pb_encode.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/load_reporting.h" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/load_reporting_filter.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/server_load_reporting_filter.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/server_load_reporting_plugin.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/aggregation.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/base_resources.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/census_interface.h" role="src" />
@@ -421,9 +430,14 @@
     <file baseinstalldir="/" name="src/core/lib/compression/compression.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/message_compress.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/stream_compression.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/compression/stream_compression_gzip.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/compression/stream_compression_identity.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/debug/stats.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/debug/stats_data.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/format_request.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/httpcli.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/http/parser.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/call_combiner.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/closure.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/combiner.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint.c" role="src" />
@@ -432,8 +446,6 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair_windows.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/error.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll1_linux.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_thread_pool_linux.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epollex_linux.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epollsig_linux.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.c" role="src" />
@@ -646,8 +658,8 @@
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/load_reporting.c" role="src" />
-    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/load_reporting_filter.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/server_load_reporting_filter.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/filters/load_reporting/server_load_reporting_plugin.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/base_resources.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/context.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/gen/census.pb.c" role="src" />
diff --git a/setup.py b/setup.py
index 403c13562c..12882413ce 100644
--- a/setup.py
+++ b/setup.py
@@ -70,7 +70,7 @@ CLASSIFIERS = [
     'Programming Language :: Python :: 3.5',
     'Programming Language :: Python :: 3.6',
     'License :: OSI Approved :: Apache Software License',
-],
+]
 
 # Environment variable to determine whether or not the Cython extension should
 # *use* Cython or use the generated C files. Note that this requires the C files
@@ -141,7 +141,7 @@ CYTHON_EXTENSION_MODULE_NAMES = ('grpc._cython.cygrpc',)
 CYTHON_HELPER_C_FILES = ()
 
 CORE_C_FILES = tuple(grpc_core_dependencies.CORE_SOURCE_FILES)
-if "win32" in sys.platform and "64bit" in platform.architecture()[0]:
+if "win32" in sys.platform:
   CORE_C_FILES = filter(lambda x: 'third_party/cares' not in x, CORE_C_FILES)
 
 EXTENSION_INCLUDE_DIRECTORIES = (
@@ -160,11 +160,12 @@ DEFINE_MACROS = (
     ('OPENSSL_NO_ASM', 1), ('_WIN32_WINNT', 0x600),
     ('GPR_BACKWARDS_COMPATIBILITY_MODE', 1),)
 if "win32" in sys.platform:
-  DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1), ('CARES_STATICLIB', 1),)
+  # TODO(zyc): Re-enble c-ares on x64 and x86 windows after fixing the
+  # ares_library_init compilation issue
+  DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1), ('CARES_STATICLIB', 1),
+                    ('GRPC_ARES', 0),)
   if '64bit' in platform.architecture()[0]:
-    # TODO(zyc): Re-enble c-ares on x64 windows after fixing the
-    # ares_library_init compilation issue
-    DEFINE_MACROS += (('MS_WIN64', 1), ('GRPC_ARES', 0),)
+    DEFINE_MACROS += (('MS_WIN64', 1),)
   elif sys.version_info >= (3, 5):
     # For some reason, this is needed to get access to inet_pton/inet_ntop
     # on msvc, but only for 32 bits
diff --git a/src/c-ares/CMakeLists.txt b/src/c-ares/CMakeLists.txt
deleted file mode 100644
index 15bd5a2add..0000000000
--- a/src/c-ares/CMakeLists.txt
+++ /dev/null
@@ -1,34 +0,0 @@
-# c-ares cmake file for gRPC
-#
-# This is currently very experimental, and unsupported.
-#
-# Copyright 2016 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-string(TOLOWER ${CMAKE_SYSTEM_NAME} cares_system_name)
-
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares/cares)
-
-if(${cares_system_name} MATCHES windows)
-  add_definitions(-DCARES_STATICLIB=1)
-  add_definitions(-DWIN32_LEAN_AND_MEAN=1)
-else()
-  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares/config_${cares_system_name})
-  add_definitions(-DHAVE_CONFIG_H=1)
-  add_definitions(-D_GNU_SOURCE=1)
-endif()
-
-file(GLOB lib_sources ../../third_party/cares/cares/*.c)
-add_library(cares ${lib_sources})
diff --git a/src/compiler/cpp_generator.cc b/src/compiler/cpp_generator.cc
index b09bf99677..c2db8eff71 100644
--- a/src/compiler/cpp_generator.cc
+++ b/src/compiler/cpp_generator.cc
@@ -165,25 +165,37 @@ void PrintHeaderClientMethodInterfaces(
   (*vars)["Request"] = method->input_type_name();
   (*vars)["Response"] = method->output_type_name();
 
+  struct {
+    grpc::string prefix;
+    grpc::string method_params;  // extra arguments to method
+    grpc::string raw_args;       // extra arguments to raw version of method
+  } async_prefixes[] = {{"Async", ", void* tag", ", tag"},
+                        {"PrepareAsync", "", ""}};
+
   if (is_public) {
     if (method->NoStreaming()) {
       printer->Print(
           *vars,
           "virtual ::grpc::Status $Method$(::grpc::ClientContext* context, "
           "const $Request$& request, $Response$* response) = 0;\n");
-      printer->Print(*vars,
-                     "std::unique_ptr< "
-                     "::grpc::ClientAsyncResponseReaderInterface< $Response$>> "
-                     "Async$Method$(::grpc::ClientContext* context, "
-                     "const $Request$& request, "
-                     "::grpc::CompletionQueue* cq) {\n");
-      printer->Indent();
-      printer->Print(*vars,
-                     "return std::unique_ptr< "
-                     "::grpc::ClientAsyncResponseReaderInterface< $Response$>>("
-                     "Async$Method$Raw(context, request, cq));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< "
+            "::grpc::ClientAsyncResponseReaderInterface< $Response$>> "
+            "$AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+            "const $Request$& request, "
+            "::grpc::CompletionQueue* cq) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< "
+            "::grpc::ClientAsyncResponseReaderInterface< $Response$>>("
+            "$AsyncPrefix$$Method$Raw(context, request, cq));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (ClientOnlyStreaming(method)) {
       printer->Print(
           *vars,
@@ -197,19 +209,26 @@ void PrintHeaderClientMethodInterfaces(
           "($Method$Raw(context, response));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(
-          *vars,
-          "std::unique_ptr< ::grpc::ClientAsyncWriterInterface< $Request$>>"
-          " Async$Method$(::grpc::ClientContext* context, $Response$* "
-          "response, "
-          "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(*vars,
-                     "return std::unique_ptr< "
-                     "::grpc::ClientAsyncWriterInterface< $Request$>>("
-                     "Async$Method$Raw(context, response, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< ::grpc::ClientAsyncWriterInterface< $Request$>>"
+            " $AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+            "$Response$* "
+            "response, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(*vars,
+                       "return std::unique_ptr< "
+                       "::grpc::ClientAsyncWriterInterface< $Request$>>("
+                       "$AsyncPrefix$$Method$Raw(context, response, "
+                       "cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (ServerOnlyStreaming(method)) {
       printer->Print(
           *vars,
@@ -223,19 +242,25 @@ void PrintHeaderClientMethodInterfaces(
           "($Method$Raw(context, request));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(
-          *vars,
-          "std::unique_ptr< ::grpc::ClientAsyncReaderInterface< $Response$>> "
-          "Async$Method$("
-          "::grpc::ClientContext* context, const $Request$& request, "
-          "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(*vars,
-                     "return std::unique_ptr< "
-                     "::grpc::ClientAsyncReaderInterface< $Response$>>("
-                     "Async$Method$Raw(context, request, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< ::grpc::ClientAsyncReaderInterface< $Response$>> "
+            "$AsyncPrefix$$Method$("
+            "::grpc::ClientContext* context, const $Request$& request, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< "
+            "::grpc::ClientAsyncReaderInterface< $Response$>>("
+            "$AsyncPrefix$$Method$Raw(context, request, cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (method->BidiStreaming()) {
       printer->Print(*vars,
                      "std::unique_ptr< ::grpc::ClientReaderWriterInterface< "
@@ -249,61 +274,83 @@ void PrintHeaderClientMethodInterfaces(
           "$Method$Raw(context));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(
-          *vars,
-          "std::unique_ptr< "
-          "::grpc::ClientAsyncReaderWriterInterface< $Request$, $Response$>> "
-          "Async$Method$(::grpc::ClientContext* context, "
-          "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(
-          *vars,
-          "return std::unique_ptr< "
-          "::grpc::ClientAsyncReaderWriterInterface< $Request$, $Response$>>("
-          "Async$Method$Raw(context, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< "
+            "::grpc::ClientAsyncReaderWriterInterface< $Request$, $Response$>> "
+            "$AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< "
+            "::grpc::ClientAsyncReaderWriterInterface< $Request$, $Response$>>("
+            "$AsyncPrefix$$Method$Raw(context, cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     }
   } else {
     if (method->NoStreaming()) {
-      printer->Print(
-          *vars,
-          "virtual ::grpc::ClientAsyncResponseReaderInterface< $Response$>* "
-          "Async$Method$Raw(::grpc::ClientContext* context, "
-          "const $Request$& request, "
-          "::grpc::CompletionQueue* cq) = 0;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        printer->Print(
+            *vars,
+            "virtual ::grpc::ClientAsyncResponseReaderInterface< $Response$>* "
+            "$AsyncPrefix$$Method$Raw(::grpc::ClientContext* context, "
+            "const $Request$& request, "
+            "::grpc::CompletionQueue* cq) = 0;\n");
+      }
     } else if (ClientOnlyStreaming(method)) {
       printer->Print(
           *vars,
           "virtual ::grpc::ClientWriterInterface< $Request$>*"
           " $Method$Raw("
           "::grpc::ClientContext* context, $Response$* response) = 0;\n");
-      printer->Print(*vars,
-                     "virtual ::grpc::ClientAsyncWriterInterface< $Request$>*"
-                     " Async$Method$Raw(::grpc::ClientContext* context, "
-                     "$Response$* response, "
-                     "::grpc::CompletionQueue* cq, void* tag) = 0;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        printer->Print(
+            *vars,
+            "virtual ::grpc::ClientAsyncWriterInterface< $Request$>*"
+            " $AsyncPrefix$$Method$Raw(::grpc::ClientContext* context, "
+            "$Response$* response, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) = 0;\n");
+      }
     } else if (ServerOnlyStreaming(method)) {
       printer->Print(
           *vars,
           "virtual ::grpc::ClientReaderInterface< $Response$>* $Method$Raw("
           "::grpc::ClientContext* context, const $Request$& request) = 0;\n");
-      printer->Print(
-          *vars,
-          "virtual ::grpc::ClientAsyncReaderInterface< $Response$>* "
-          "Async$Method$Raw("
-          "::grpc::ClientContext* context, const $Request$& request, "
-          "::grpc::CompletionQueue* cq, void* tag) = 0;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        printer->Print(
+            *vars,
+            "virtual ::grpc::ClientAsyncReaderInterface< $Response$>* "
+            "$AsyncPrefix$$Method$Raw("
+            "::grpc::ClientContext* context, const $Request$& request, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) = 0;\n");
+      }
     } else if (method->BidiStreaming()) {
       printer->Print(*vars,
                      "virtual ::grpc::ClientReaderWriterInterface< $Request$, "
                      "$Response$>* "
                      "$Method$Raw(::grpc::ClientContext* context) = 0;\n");
-      printer->Print(*vars,
-                     "virtual ::grpc::ClientAsyncReaderWriterInterface< "
-                     "$Request$, $Response$>* "
-                     "Async$Method$Raw(::grpc::ClientContext* context, "
-                     "::grpc::CompletionQueue* cq, void* tag) = 0;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        printer->Print(
+            *vars,
+            "virtual ::grpc::ClientAsyncReaderWriterInterface< "
+            "$Request$, $Response$>* "
+            "$AsyncPrefix$$Method$Raw(::grpc::ClientContext* context, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) = 0;\n");
+      }
     }
   }
 }
@@ -315,25 +362,35 @@ void PrintHeaderClientMethod(grpc_generator::Printer *printer,
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
   (*vars)["Response"] = method->output_type_name();
+  struct {
+    grpc::string prefix;
+    grpc::string method_params;  // extra arguments to method
+    grpc::string raw_args;       // extra arguments to raw version of method
+  } async_prefixes[] = {{"Async", ", void* tag", ", tag"},
+                        {"PrepareAsync", "", ""}};
+
   if (is_public) {
     if (method->NoStreaming()) {
       printer->Print(
           *vars,
           "::grpc::Status $Method$(::grpc::ClientContext* context, "
           "const $Request$& request, $Response$* response) override;\n");
-      printer->Print(
-          *vars,
-          "std::unique_ptr< ::grpc::ClientAsyncResponseReader< $Response$>> "
-          "Async$Method$(::grpc::ClientContext* context, "
-          "const $Request$& request, "
-          "::grpc::CompletionQueue* cq) {\n");
-      printer->Indent();
-      printer->Print(*vars,
-                     "return std::unique_ptr< "
-                     "::grpc::ClientAsyncResponseReader< $Response$>>("
-                     "Async$Method$Raw(context, request, cq));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< ::grpc::ClientAsyncResponseReader< $Response$>> "
+            "$AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+            "const $Request$& request, "
+            "::grpc::CompletionQueue* cq) {\n");
+        printer->Indent();
+        printer->Print(*vars,
+                       "return std::unique_ptr< "
+                       "::grpc::ClientAsyncResponseReader< $Response$>>("
+                       "$AsyncPrefix$$Method$Raw(context, request, cq));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (ClientOnlyStreaming(method)) {
       printer->Print(
           *vars,
@@ -346,18 +403,24 @@ void PrintHeaderClientMethod(grpc_generator::Printer *printer,
                      "($Method$Raw(context, response));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(*vars,
-                     "std::unique_ptr< ::grpc::ClientAsyncWriter< $Request$>>"
-                     " Async$Method$(::grpc::ClientContext* context, "
-                     "$Response$* response, "
-                     "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(
-          *vars,
-          "return std::unique_ptr< ::grpc::ClientAsyncWriter< $Request$>>("
-          "Async$Method$Raw(context, response, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(*vars,
+                       "std::unique_ptr< ::grpc::ClientAsyncWriter< $Request$>>"
+                       " $AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+                       "$Response$* response, "
+                       "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< ::grpc::ClientAsyncWriter< $Request$>>("
+            "$AsyncPrefix$$Method$Raw(context, response, "
+            "cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (ServerOnlyStreaming(method)) {
       printer->Print(
           *vars,
@@ -371,19 +434,24 @@ void PrintHeaderClientMethod(grpc_generator::Printer *printer,
           "($Method$Raw(context, request));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(
-          *vars,
-          "std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>> "
-          "Async$Method$("
-          "::grpc::ClientContext* context, const $Request$& request, "
-          "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(
-          *vars,
-          "return std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>>("
-          "Async$Method$Raw(context, request, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>> "
+            "$AsyncPrefix$$Method$("
+            "::grpc::ClientContext* context, const $Request$& request, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< ::grpc::ClientAsyncReader< $Response$>>("
+            "$AsyncPrefix$$Method$Raw(context, request, cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     } else if (method->BidiStreaming()) {
       printer->Print(
           *vars,
@@ -396,53 +464,80 @@ void PrintHeaderClientMethod(grpc_generator::Printer *printer,
                      "$Method$Raw(context));\n");
       printer->Outdent();
       printer->Print("}\n");
-      printer->Print(*vars,
-                     "std::unique_ptr<  ::grpc::ClientAsyncReaderWriter< "
-                     "$Request$, $Response$>> "
-                     "Async$Method$(::grpc::ClientContext* context, "
-                     "::grpc::CompletionQueue* cq, void* tag) {\n");
-      printer->Indent();
-      printer->Print(*vars,
-                     "return std::unique_ptr< "
-                     "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>>("
-                     "Async$Method$Raw(context, cq, tag));\n");
-      printer->Outdent();
-      printer->Print("}\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(*vars,
+                       "std::unique_ptr<  ::grpc::ClientAsyncReaderWriter< "
+                       "$Request$, $Response$>> "
+                       "$AsyncPrefix$$Method$(::grpc::ClientContext* context, "
+                       "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+        printer->Indent();
+        printer->Print(
+            *vars,
+            "return std::unique_ptr< "
+            "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>>("
+            "$AsyncPrefix$$Method$Raw(context, cq$AsyncRawArgs$));\n");
+        printer->Outdent();
+        printer->Print("}\n");
+      }
     }
   } else {
     if (method->NoStreaming()) {
-      printer->Print(*vars,
-                     "::grpc::ClientAsyncResponseReader< $Response$>* "
-                     "Async$Method$Raw(::grpc::ClientContext* context, "
-                     "const $Request$& request, "
-                     "::grpc::CompletionQueue* cq) override;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        printer->Print(
+            *vars,
+            "::grpc::ClientAsyncResponseReader< $Response$>* "
+            "$AsyncPrefix$$Method$Raw(::grpc::ClientContext* context, "
+            "const $Request$& request, "
+            "::grpc::CompletionQueue* cq) override;\n");
+      }
     } else if (ClientOnlyStreaming(method)) {
       printer->Print(*vars,
                      "::grpc::ClientWriter< $Request$>* $Method$Raw("
                      "::grpc::ClientContext* context, $Response$* response) "
                      "override;\n");
-      printer->Print(*vars,
-                     "::grpc::ClientAsyncWriter< $Request$>* Async$Method$Raw("
-                     "::grpc::ClientContext* context, $Response$* response, "
-                     "::grpc::CompletionQueue* cq, void* tag) override;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "::grpc::ClientAsyncWriter< $Request$>* $AsyncPrefix$$Method$Raw("
+            "::grpc::ClientContext* context, $Response$* response, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) override;\n");
+      }
     } else if (ServerOnlyStreaming(method)) {
       printer->Print(*vars,
                      "::grpc::ClientReader< $Response$>* $Method$Raw("
                      "::grpc::ClientContext* context, const $Request$& request)"
                      " override;\n");
-      printer->Print(
-          *vars,
-          "::grpc::ClientAsyncReader< $Response$>* Async$Method$Raw("
-          "::grpc::ClientContext* context, const $Request$& request, "
-          "::grpc::CompletionQueue* cq, void* tag) override;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "::grpc::ClientAsyncReader< $Response$>* $AsyncPrefix$$Method$Raw("
+            "::grpc::ClientContext* context, const $Request$& request, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) override;\n");
+      }
     } else if (method->BidiStreaming()) {
       printer->Print(*vars,
                      "::grpc::ClientReaderWriter< $Request$, $Response$>* "
                      "$Method$Raw(::grpc::ClientContext* context) override;\n");
-      printer->Print(*vars,
-                     "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>* "
-                     "Async$Method$Raw(::grpc::ClientContext* context, "
-                     "::grpc::CompletionQueue* cq, void* tag) override;\n");
+      for (auto async_prefix : async_prefixes) {
+        (*vars)["AsyncPrefix"] = async_prefix.prefix;
+        (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+        (*vars)["AsyncRawArgs"] = async_prefix.raw_args;
+        printer->Print(
+            *vars,
+            "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>* "
+            "$AsyncPrefix$$Method$Raw(::grpc::ClientContext* context, "
+            "::grpc::CompletionQueue* cq$AsyncMethodParams$) override;\n");
+      }
     }
   }
 }
@@ -1077,6 +1172,13 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
   (*vars)["Response"] = method->output_type_name();
+  struct {
+    grpc::string prefix;
+    grpc::string start;          // bool literal expressed as string
+    grpc::string method_params;  // extra arguments to method
+    grpc::string create_args;    // extra arguments to creator
+  } async_prefixes[] = {{"Async", "true", ", void* tag", ", tag"},
+                        {"PrepareAsync", "false", "", ", nullptr"}};
   if (method->NoStreaming()) {
     printer->Print(*vars,
                    "::grpc::Status $ns$$Service$::Stub::$Method$("
@@ -1087,19 +1189,23 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "rpcmethod_$Method$_, "
                    "context, request, response);\n"
                    "}\n\n");
-    printer->Print(
-        *vars,
-        "::grpc::ClientAsyncResponseReader< $Response$>* "
-        "$ns$$Service$::Stub::Async$Method$Raw(::grpc::ClientContext* context, "
-        "const $Request$& request, "
-        "::grpc::CompletionQueue* cq) {\n");
-    printer->Print(*vars,
-                   "  return "
-                   "::grpc::ClientAsyncResponseReader< $Response$>::Create("
-                   "channel_.get(), cq, "
-                   "rpcmethod_$Method$_, "
-                   "context, request);\n"
-                   "}\n\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncStart"] = async_prefix.start;
+      printer->Print(*vars,
+                     "::grpc::ClientAsyncResponseReader< $Response$>* "
+                     "$ns$$Service$::Stub::$AsyncPrefix$$Method$Raw(::grpc::"
+                     "ClientContext* context, "
+                     "const $Request$& request, "
+                     "::grpc::CompletionQueue* cq) {\n");
+      printer->Print(*vars,
+                     "  return "
+                     "::grpc::ClientAsyncResponseReader< $Response$>::Create("
+                     "channel_.get(), cq, "
+                     "rpcmethod_$Method$_, "
+                     "context, request, $AsyncStart$);\n"
+                     "}\n\n");
+    }
   } else if (ClientOnlyStreaming(method)) {
     printer->Print(*vars,
                    "::grpc::ClientWriter< $Request$>* "
@@ -1111,17 +1217,23 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "rpcmethod_$Method$_, "
                    "context, response);\n"
                    "}\n\n");
-    printer->Print(*vars,
-                   "::grpc::ClientAsyncWriter< $Request$>* "
-                   "$ns$$Service$::Stub::Async$Method$Raw("
-                   "::grpc::ClientContext* context, $Response$* response, "
-                   "::grpc::CompletionQueue* cq, void* tag) {\n");
-    printer->Print(*vars,
-                   "  return ::grpc::ClientAsyncWriter< $Request$>::Create("
-                   "channel_.get(), cq, "
-                   "rpcmethod_$Method$_, "
-                   "context, response, tag);\n"
-                   "}\n\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncStart"] = async_prefix.start;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["AsyncCreateArgs"] = async_prefix.create_args;
+      printer->Print(*vars,
+                     "::grpc::ClientAsyncWriter< $Request$>* "
+                     "$ns$$Service$::Stub::$AsyncPrefix$$Method$Raw("
+                     "::grpc::ClientContext* context, $Response$* response, "
+                     "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+      printer->Print(*vars,
+                     "  return ::grpc::ClientAsyncWriter< $Request$>::Create("
+                     "channel_.get(), cq, "
+                     "rpcmethod_$Method$_, "
+                     "context, response, $AsyncStart$$AsyncCreateArgs$);\n"
+                     "}\n\n");
+    }
   } else if (ServerOnlyStreaming(method)) {
     printer->Print(
         *vars,
@@ -1134,17 +1246,24 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "rpcmethod_$Method$_, "
                    "context, request);\n"
                    "}\n\n");
-    printer->Print(*vars,
-                   "::grpc::ClientAsyncReader< $Response$>* "
-                   "$ns$$Service$::Stub::Async$Method$Raw("
-                   "::grpc::ClientContext* context, const $Request$& request, "
-                   "::grpc::CompletionQueue* cq, void* tag) {\n");
-    printer->Print(*vars,
-                   "  return ::grpc::ClientAsyncReader< $Response$>::Create("
-                   "channel_.get(), cq, "
-                   "rpcmethod_$Method$_, "
-                   "context, request, tag);\n"
-                   "}\n\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncStart"] = async_prefix.start;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["AsyncCreateArgs"] = async_prefix.create_args;
+      printer->Print(
+          *vars,
+          "::grpc::ClientAsyncReader< $Response$>* "
+          "$ns$$Service$::Stub::$AsyncPrefix$$Method$Raw("
+          "::grpc::ClientContext* context, const $Request$& request, "
+          "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+      printer->Print(*vars,
+                     "  return ::grpc::ClientAsyncReader< $Response$>::Create("
+                     "channel_.get(), cq, "
+                     "rpcmethod_$Method$_, "
+                     "context, request, $AsyncStart$$AsyncCreateArgs$);\n"
+                     "}\n\n");
+    }
   } else if (method->BidiStreaming()) {
     printer->Print(
         *vars,
@@ -1157,19 +1276,25 @@ void PrintSourceClientMethod(grpc_generator::Printer *printer,
                    "rpcmethod_$Method$_, "
                    "context);\n"
                    "}\n\n");
-    printer->Print(
-        *vars,
-        "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>* "
-        "$ns$$Service$::Stub::Async$Method$Raw(::grpc::ClientContext* context, "
-        "::grpc::CompletionQueue* cq, void* tag) {\n");
-    printer->Print(
-        *vars,
-        "  return "
-        "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>::Create("
-        "channel_.get(), cq, "
-        "rpcmethod_$Method$_, "
-        "context, tag);\n"
-        "}\n\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncStart"] = async_prefix.start;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["AsyncCreateArgs"] = async_prefix.create_args;
+      printer->Print(*vars,
+                     "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>* "
+                     "$ns$$Service$::Stub::$AsyncPrefix$$Method$Raw(::grpc::"
+                     "ClientContext* context, "
+                     "::grpc::CompletionQueue* cq$AsyncMethodParams$) {\n");
+      printer->Print(
+          *vars,
+          "  return "
+          "::grpc::ClientAsyncReaderWriter< $Request$, $Response$>::Create("
+          "channel_.get(), cq, "
+          "rpcmethod_$Method$_, "
+          "context, $AsyncStart$$AsyncCreateArgs$);\n"
+          "}\n\n");
+    }
   }
 }
 
@@ -1460,50 +1585,79 @@ void PrintMockClientMethods(grpc_generator::Printer *printer,
   (*vars)["Request"] = method->input_type_name();
   (*vars)["Response"] = method->output_type_name();
 
+  struct {
+    grpc::string prefix;
+    grpc::string method_params;  // extra arguments to method
+    int extra_method_param_count;
+  } async_prefixes[] = {{"Async", ", void* tag", 1}, {"PrepareAsync", "", 0}};
+
   if (method->NoStreaming()) {
     printer->Print(
         *vars,
         "MOCK_METHOD3($Method$, ::grpc::Status(::grpc::ClientContext* context, "
         "const $Request$& request, $Response$* response));\n");
-    printer->Print(*vars,
-                   "MOCK_METHOD3(Async$Method$Raw, "
-                   "::grpc::ClientAsyncResponseReaderInterface< $Response$>*"
-                   "(::grpc::ClientContext* context, const $Request$& request, "
-                   "::grpc::CompletionQueue* cq));\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      printer->Print(
+          *vars,
+          "MOCK_METHOD3($AsyncPrefix$$Method$Raw, "
+          "::grpc::ClientAsyncResponseReaderInterface< $Response$>*"
+          "(::grpc::ClientContext* context, const $Request$& request, "
+          "::grpc::CompletionQueue* cq));\n");
+    }
   } else if (ClientOnlyStreaming(method)) {
     printer->Print(
         *vars,
         "MOCK_METHOD2($Method$Raw, "
         "::grpc::ClientWriterInterface< $Request$>*"
         "(::grpc::ClientContext* context, $Response$* response));\n");
-    printer->Print(*vars,
-                   "MOCK_METHOD4(Async$Method$Raw, "
-                   "::grpc::ClientAsyncWriterInterface< $Request$>*"
-                   "(::grpc::ClientContext* context, $Response$* response, "
-                   "::grpc::CompletionQueue* cq, void* tag));\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["MockArgs"] =
+          std::to_string(3 + async_prefix.extra_method_param_count);
+      printer->Print(*vars,
+                     "MOCK_METHOD$MockArgs$($AsyncPrefix$$Method$Raw, "
+                     "::grpc::ClientAsyncWriterInterface< $Request$>*"
+                     "(::grpc::ClientContext* context, $Response$* response, "
+                     "::grpc::CompletionQueue* cq$AsyncMethodParams$));\n");
+    }
   } else if (ServerOnlyStreaming(method)) {
     printer->Print(
         *vars,
         "MOCK_METHOD2($Method$Raw, "
         "::grpc::ClientReaderInterface< $Response$>*"
         "(::grpc::ClientContext* context, const $Request$& request));\n");
-    printer->Print(*vars,
-                   "MOCK_METHOD4(Async$Method$Raw, "
-                   "::grpc::ClientAsyncReaderInterface< $Response$>*"
-                   "(::grpc::ClientContext* context, const $Request$& request, "
-                   "::grpc::CompletionQueue* cq, void* tag));\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["MockArgs"] =
+          std::to_string(3 + async_prefix.extra_method_param_count);
+      printer->Print(
+          *vars,
+          "MOCK_METHOD$MockArgs$($AsyncPrefix$$Method$Raw, "
+          "::grpc::ClientAsyncReaderInterface< $Response$>*"
+          "(::grpc::ClientContext* context, const $Request$& request, "
+          "::grpc::CompletionQueue* cq$AsyncMethodParams$));\n");
+    }
   } else if (method->BidiStreaming()) {
     printer->Print(
         *vars,
         "MOCK_METHOD1($Method$Raw, "
         "::grpc::ClientReaderWriterInterface< $Request$, $Response$>*"
         "(::grpc::ClientContext* context));\n");
-    printer->Print(
-        *vars,
-        "MOCK_METHOD3(Async$Method$Raw, "
-        "::grpc::ClientAsyncReaderWriterInterface<$Request$, $Response$>*"
-        "(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, "
-        "void* tag));\n");
+    for (auto async_prefix : async_prefixes) {
+      (*vars)["AsyncPrefix"] = async_prefix.prefix;
+      (*vars)["AsyncMethodParams"] = async_prefix.method_params;
+      (*vars)["MockArgs"] =
+          std::to_string(2 + async_prefix.extra_method_param_count);
+      printer->Print(
+          *vars,
+          "MOCK_METHOD$MockArgs$($AsyncPrefix$$Method$Raw, "
+          "::grpc::ClientAsyncReaderWriterInterface<$Request$, $Response$>*"
+          "(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq"
+          "$AsyncMethodParams$));\n");
+    }
   }
 }
 
diff --git a/src/compiler/php_generator.cc b/src/compiler/php_generator.cc
index 67967d0bd7..6d9ff3a29c 100644
--- a/src/compiler/php_generator.cc
+++ b/src/compiler/php_generator.cc
@@ -33,7 +33,7 @@ using std::map;
 namespace grpc_php_generator {
 namespace {
 
-grpc::string MessageIdentifierName(const grpc::string &name) {
+grpc::string ConvertToPhpNamespace(const grpc::string &name) {
   std::vector<grpc::string> tokens = grpc_generator::tokenize(name, ".");
   std::ostringstream oss;
   for (unsigned int i = 0; i < tokens.size(); i++) {
@@ -43,14 +43,33 @@ grpc::string MessageIdentifierName(const grpc::string &name) {
   return oss.str();
 }
 
+grpc::string PackageName(const FileDescriptor *file) {
+  if (file->options().has_php_namespace()) {
+    return file->options().php_namespace();
+  } else {
+    return ConvertToPhpNamespace(file->package());
+  }
+}
+
+grpc::string MessageIdentifierName(const grpc::string &name,
+                                   const FileDescriptor *file) {
+  std::vector<grpc::string> tokens = grpc_generator::tokenize(name, ".");
+  std::ostringstream oss;
+  oss << PackageName(file) << "\\"
+      << grpc_generator::CapitalizeFirstLetter(tokens[tokens.size() - 1]);
+  return oss.str();
+}
+
 void PrintMethod(const MethodDescriptor *method, Printer *out) {
   const Descriptor *input_type = method->input_type();
   const Descriptor *output_type = method->output_type();
   map<grpc::string, grpc::string> vars;
   vars["service_name"] = method->service()->full_name();
   vars["name"] = method->name();
-  vars["input_type_id"] = MessageIdentifierName(input_type->full_name());
-  vars["output_type_id"] = MessageIdentifierName(output_type->full_name());
+  vars["input_type_id"] =
+      MessageIdentifierName(input_type->full_name(), input_type->file());
+  vars["output_type_id"] =
+      MessageIdentifierName(output_type->full_name(), output_type->file());
 
   out->Print("/**\n");
   out->Print(GetPHPComments(method, " *").c_str());
@@ -149,12 +168,7 @@ grpc::string GenerateFile(const FileDescriptor *file,
     }
 
     map<grpc::string, grpc::string> vars;
-    grpc::string php_namespace;
-    if (file->options().has_php_namespace()) {
-      php_namespace = file->options().php_namespace();
-    } else {
-      php_namespace = MessageIdentifierName(file->package());
-    }
+    grpc::string php_namespace = PackageName(file);
     vars["package"] = php_namespace;
     out.Print(vars, "namespace $package$;\n\n");
 
diff --git a/src/compiler/python_generator.cc b/src/compiler/python_generator.cc
index 31b177c28e..ef2d90de9e 100644
--- a/src/compiler/python_generator.cc
+++ b/src/compiler/python_generator.cc
@@ -767,9 +767,9 @@ bool PythonGrpcGenerator::Generate(const FileDescriptor* file,
 
   ProtoBufFile pbfile(file);
   PrivateGenerator generator(config_, &pbfile);
-  if (parameter == "grpc_2_0") {
+  if (parameter == "" || parameter == "grpc_2_0") {
     return GenerateGrpc(context, generator, pb2_grpc_file_name, true);
-  } else if (parameter == "") {
+  } else if (parameter == "grpc_1_0") {
     return GenerateGrpc(context, generator, pb2_grpc_file_name, true) &&
            GenerateGrpc(context, generator, pb2_file_name, false);
   } else {
diff --git a/src/core/ext/census/base_resources.c b/src/core/ext/census/base_resources.c
index 2114bf04cd..1f2bb39fe0 100644
--- a/src/core/ext/census/base_resources.c
+++ b/src/core/ext/census/base_resources.c
@@ -37,20 +37,20 @@
 void define_base_resources() {
   google_census_Resource_BasicUnit numerator =
       google_census_Resource_BasicUnit_SECS;
-  resource r = {"client_rpc_latency",             // name
-                "Client RPC latency in seconds",  // description
-                0,                                // prefix
-                1,                                // n_numerators
-                &numerator,                       // numerators
-                0,                                // n_denominators
-                NULL};                            // denominators
+  resource r = {(char *)"client_rpc_latency",             // name
+                (char *)"Client RPC latency in seconds",  // description
+                0,                                        // prefix
+                1,                                        // n_numerators
+                &numerator,                               // numerators
+                0,                                        // n_denominators
+                NULL};                                    // denominators
   define_resource(&r);
-  r = (resource){"server_rpc_latency",             // name
-                 "Server RPC latency in seconds",  // description
-                 0,                                // prefix
-                 1,                                // n_numerators
-                 &numerator,                       // numerators
-                 0,                                // n_denominators
-                 NULL};                            // denominators
+  r = (resource){(char *)"server_rpc_latency",             // name
+                 (char *)"Server RPC latency in seconds",  // description
+                 0,                                        // prefix
+                 1,                                        // n_numerators
+                 &numerator,                               // numerators
+                 0,                                        // n_denominators
+                 NULL};                                    // denominators
   define_resource(&r);
 }
diff --git a/src/core/ext/census/context.c b/src/core/ext/census/context.c
index 1019b287d7..9b25a32e36 100644
--- a/src/core/ext/census/context.c
+++ b/src/core/ext/census/context.c
@@ -141,7 +141,7 @@ static char *decode_tag(struct raw_tag *tag, char *header, int offset) {
 // Make a copy (in 'to') of an existing tag_set.
 static void tag_set_copy(struct tag_set *to, const struct tag_set *from) {
   memcpy(to, from, sizeof(struct tag_set));
-  to->kvm = gpr_malloc(to->kvm_size);
+  to->kvm = (char *)gpr_malloc(to->kvm_size);
   memcpy(to->kvm, from->kvm, from->kvm_used);
 }
 
@@ -184,7 +184,7 @@ static bool tag_set_add_tag(struct tag_set *tags, const census_tag *tag,
   if (tags->kvm_used + tag_size > tags->kvm_size) {
     // allocate new memory if needed
     tags->kvm_size += 2 * CENSUS_MAX_TAG_KV_LEN + TAG_HEADER_SIZE;
-    char *new_kvm = gpr_malloc(tags->kvm_size);
+    char *new_kvm = (char *)gpr_malloc(tags->kvm_size);
     if (tags->kvm_used > 0) memcpy(new_kvm, tags->kvm, tags->kvm_used);
     gpr_free(tags->kvm);
     tags->kvm = new_kvm;
@@ -274,7 +274,8 @@ static void tag_set_flatten(struct tag_set *tags) {
 census_context *census_context_create(const census_context *base,
                                       const census_tag *tags, int ntags,
                                       census_context_status const **status) {
-  census_context *context = gpr_malloc(sizeof(census_context));
+  census_context *context =
+      (census_context *)gpr_malloc(sizeof(census_context));
   // If we are given a base, copy it into our new tag set. Otherwise set it
   // to zero/NULL everything.
   if (base == NULL) {
@@ -459,7 +460,7 @@ static void tag_set_decode(struct tag_set *tags, const char *buffer,
   }
   tags->kvm_used = size - header_size;
   tags->kvm_size = tags->kvm_used + CENSUS_MAX_TAG_KV_LEN;
-  tags->kvm = gpr_malloc(tags->kvm_size);
+  tags->kvm = (char *)gpr_malloc(tags->kvm_size);
   if (tag_header_size != TAG_HEADER_SIZE) {
     // something new in the tag information. I don't understand it, so
     // don't copy it over.
@@ -481,7 +482,8 @@ static void tag_set_decode(struct tag_set *tags, const char *buffer,
 }
 
 census_context *census_context_decode(const char *buffer, size_t size) {
-  census_context *context = gpr_malloc(sizeof(census_context));
+  census_context *context =
+      (census_context *)gpr_malloc(sizeof(census_context));
   memset(&context->tags[LOCAL_TAGS], 0, sizeof(struct tag_set));
   if (buffer == NULL) {
     memset(&context->tags[PROPAGATED_TAGS], 0, sizeof(struct tag_set));
diff --git a/src/core/ext/census/grpc_filter.c b/src/core/ext/census/grpc_filter.c
index 13fe2e6b1c..b37ab90389 100644
--- a/src/core/ext/census/grpc_filter.c
+++ b/src/core/ext/census/grpc_filter.c
@@ -60,8 +60,8 @@ static void extract_and_annotate_method_tag(grpc_metadata_batch *md,
 
 static void client_mutate_op(grpc_call_element *elem,
                              grpc_transport_stream_op_batch *op) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (op->send_initial_metadata) {
     extract_and_annotate_method_tag(
         op->payload->send_initial_metadata.send_initial_metadata, calld, chand);
@@ -78,9 +78,9 @@ static void client_start_transport_op(grpc_exec_ctx *exec_ctx,
 static void server_on_done_recv(grpc_exec_ctx *exec_ctx, void *ptr,
                                 grpc_error *error) {
   GPR_TIMER_BEGIN("census-server:server_on_done_recv", 0);
-  grpc_call_element *elem = ptr;
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  grpc_call_element *elem = (grpc_call_element *)ptr;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (error == GRPC_ERROR_NONE) {
     extract_and_annotate_method_tag(calld->recv_initial_metadata, calld, chand);
   }
@@ -90,7 +90,7 @@ static void server_on_done_recv(grpc_exec_ctx *exec_ctx, void *ptr,
 
 static void server_mutate_op(grpc_call_element *elem,
                              grpc_transport_stream_op_batch *op) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (op->recv_initial_metadata) {
     /* substitute our callback for the op callback */
     calld->recv_initial_metadata =
@@ -117,7 +117,7 @@ static void server_start_transport_op(grpc_exec_ctx *exec_ctx,
 static grpc_error *client_init_call_elem(grpc_exec_ctx *exec_ctx,
                                          grpc_call_element *elem,
                                          const grpc_call_element_args *args) {
-  call_data *d = elem->call_data;
+  call_data *d = (call_data *)elem->call_data;
   GPR_ASSERT(d != NULL);
   memset(d, 0, sizeof(*d));
   d->start_ts = args->start_time;
@@ -128,7 +128,7 @@ static void client_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
                                      const grpc_call_final_info *final_info,
                                      grpc_closure *ignored) {
-  call_data *d = elem->call_data;
+  call_data *d = (call_data *)elem->call_data;
   GPR_ASSERT(d != NULL);
   /* TODO(hongyu): record rpc client stats and census_rpc_end_op here */
 }
@@ -136,7 +136,7 @@ static void client_destroy_call_elem(grpc_exec_ctx *exec_ctx,
 static grpc_error *server_init_call_elem(grpc_exec_ctx *exec_ctx,
                                          grpc_call_element *elem,
                                          const grpc_call_element_args *args) {
-  call_data *d = elem->call_data;
+  call_data *d = (call_data *)elem->call_data;
   GPR_ASSERT(d != NULL);
   memset(d, 0, sizeof(*d));
   d->start_ts = args->start_time;
@@ -150,7 +150,7 @@ static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
                                      const grpc_call_final_info *final_info,
                                      grpc_closure *ignored) {
-  call_data *d = elem->call_data;
+  call_data *d = (call_data *)elem->call_data;
   GPR_ASSERT(d != NULL);
   /* TODO(hongyu): record rpc server stats and census_tracing_end_op here */
 }
@@ -158,14 +158,14 @@ static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
 static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_channel_element *elem,
                                      grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GPR_ASSERT(chand != NULL);
   return GRPC_ERROR_NONE;
 }
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GPR_ASSERT(chand != NULL);
 }
 
@@ -179,7 +179,6 @@ const grpc_channel_filter grpc_client_census_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "census-client"};
 
@@ -193,6 +192,5 @@ const grpc_channel_filter grpc_server_census_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "census-server"};
diff --git a/src/core/ext/census/mlog.c b/src/core/ext/census/mlog.c
index 937ceb101b..4b8c8466b3 100644
--- a/src/core/ext/census/mlog.c
+++ b/src/core/ext/census/mlog.c
@@ -467,7 +467,8 @@ void census_log_initialize(size_t size_in_mb, int discard_old_records) {
   g_log.blocks = (cl_block*)gpr_malloc_aligned(
       g_log.num_blocks * sizeof(cl_block), GPR_CACHELINE_SIZE_LOG);
   memset(g_log.blocks, 0, g_log.num_blocks * sizeof(cl_block));
-  g_log.buffer = gpr_malloc(g_log.num_blocks * CENSUS_LOG_MAX_RECORD_SIZE);
+  g_log.buffer =
+      (char*)gpr_malloc(g_log.num_blocks * CENSUS_LOG_MAX_RECORD_SIZE);
   memset(g_log.buffer, 0, g_log.num_blocks * CENSUS_LOG_MAX_RECORD_SIZE);
   cl_block_list_initialize(&g_log.free_block_list);
   cl_block_list_initialize(&g_log.dirty_block_list);
diff --git a/src/core/ext/census/resource.c b/src/core/ext/census/resource.c
index 1a676f0e1e..44a887231c 100644
--- a/src/core/ext/census/resource.c
+++ b/src/core/ext/census/resource.c
@@ -87,7 +87,7 @@ static bool validate_string(pb_istream_t *stream, const pb_field_t *field,
         gpr_log(GPR_INFO, "Zero-length Resource name.");
         return false;
       }
-      vresource->name = gpr_malloc(stream->bytes_left + 1);
+      vresource->name = (char *)gpr_malloc(stream->bytes_left + 1);
       vresource->name[stream->bytes_left] = '\0';
       if (!pb_read(stream, (uint8_t *)vresource->name, stream->bytes_left)) {
         return false;
@@ -106,7 +106,7 @@ static bool validate_string(pb_istream_t *stream, const pb_field_t *field,
       if (stream->bytes_left == 0) {
         return true;
       }
-      vresource->description = gpr_malloc(stream->bytes_left + 1);
+      vresource->description = (char *)gpr_malloc(stream->bytes_left + 1);
       vresource->description[stream->bytes_left] = '\0';
       if (!pb_read(stream, (uint8_t *)vresource->description,
                    stream->bytes_left)) {
@@ -134,7 +134,8 @@ static bool validate_units_helper(pb_istream_t *stream, int *count,
     // Have to allocate a new array of values. Normal case is 0 or 1, so
     // this should normally not be an issue.
     google_census_Resource_BasicUnit *new_bup =
-        gpr_malloc((size_t)*count * sizeof(google_census_Resource_BasicUnit));
+        (google_census_Resource_BasicUnit *)gpr_malloc(
+            (size_t)*count * sizeof(google_census_Resource_BasicUnit));
     if (*count != 1) {
       memcpy(new_bup, *bup,
              (size_t)(*count - 1) * sizeof(google_census_Resource_BasicUnit));
@@ -207,7 +208,8 @@ size_t allocate_resource(void) {
   // Expand resources if needed.
   if (n_resources == n_defined_resources) {
     size_t new_n_resources = n_resources ? n_resources * 2 : 2;
-    resource **new_resources = gpr_malloc(new_n_resources * sizeof(resource *));
+    resource **new_resources =
+        (resource **)gpr_malloc(new_n_resources * sizeof(resource *));
     if (n_resources != 0) {
       memcpy(new_resources, resources, n_resources * sizeof(resource *));
     }
@@ -226,7 +228,7 @@ size_t allocate_resource(void) {
     }
   }
   GPR_ASSERT(id < n_resources && resources[id] == NULL);
-  resources[id] = gpr_malloc(sizeof(resource));
+  resources[id] = (resource *)gpr_malloc(sizeof(resource));
   memset(resources[id], 0, sizeof(resource));
   n_defined_resources++;
   next_id = (id + 1) % n_resources;
@@ -276,22 +278,24 @@ int32_t define_resource(const resource *base) {
   gpr_mu_lock(&resource_lock);
   size_t id = allocate_resource();
   size_t len = strlen(base->name) + 1;
-  resources[id]->name = gpr_malloc(len);
+  resources[id]->name = (char *)gpr_malloc(len);
   memcpy(resources[id]->name, base->name, len);
   if (base->description) {
     len = strlen(base->description) + 1;
-    resources[id]->description = gpr_malloc(len);
+    resources[id]->description = (char *)gpr_malloc(len);
     memcpy(resources[id]->description, base->description, len);
   }
   resources[id]->prefix = base->prefix;
   resources[id]->n_numerators = base->n_numerators;
   len = (size_t)base->n_numerators * sizeof(*base->numerators);
-  resources[id]->numerators = gpr_malloc(len);
+  resources[id]->numerators =
+      (google_census_Resource_BasicUnit *)gpr_malloc(len);
   memcpy(resources[id]->numerators, base->numerators, len);
   resources[id]->n_denominators = base->n_denominators;
   if (base->n_denominators != 0) {
     len = (size_t)base->n_denominators * sizeof(*base->denominators);
-    resources[id]->denominators = gpr_malloc(len);
+    resources[id]->denominators =
+        (google_census_Resource_BasicUnit *)gpr_malloc(len);
     memcpy(resources[id]->denominators, base->denominators, len);
   }
   gpr_mu_unlock(&resource_lock);
diff --git a/src/core/ext/filters/client_channel/channel_connectivity.c b/src/core/ext/filters/client_channel/channel_connectivity.c
index b83c95275f..3844b98021 100644
--- a/src/core/ext/filters/client_channel/channel_connectivity.c
+++ b/src/core/ext/filters/client_channel/channel_connectivity.c
@@ -86,20 +86,20 @@ static void delete_state_watcher(grpc_exec_ctx *exec_ctx, state_watcher *w) {
 
 static void finished_completion(grpc_exec_ctx *exec_ctx, void *pw,
                                 grpc_cq_completion *ignored) {
-  int delete = 0;
-  state_watcher *w = pw;
+  bool should_delete = false;
+  state_watcher *w = (state_watcher *)pw;
   gpr_mu_lock(&w->mu);
   switch (w->phase) {
     case WAITING:
     case READY_TO_CALL_BACK:
       GPR_UNREACHABLE_CODE(return );
     case CALLING_BACK_AND_FINISHED:
-      delete = 1;
+      should_delete = true;
       break;
   }
   gpr_mu_unlock(&w->mu);
 
-  if (delete) {
+  if (should_delete) {
     delete_state_watcher(exec_ctx, w);
   }
 }
@@ -161,12 +161,12 @@ static void partly_done(grpc_exec_ctx *exec_ctx, state_watcher *w,
 
 static void watch_complete(grpc_exec_ctx *exec_ctx, void *pw,
                            grpc_error *error) {
-  partly_done(exec_ctx, pw, true, GRPC_ERROR_REF(error));
+  partly_done(exec_ctx, (state_watcher *)pw, true, GRPC_ERROR_REF(error));
 }
 
 static void timeout_complete(grpc_exec_ctx *exec_ctx, void *pw,
                              grpc_error *error) {
-  partly_done(exec_ctx, pw, false, GRPC_ERROR_REF(error));
+  partly_done(exec_ctx, (state_watcher *)pw, false, GRPC_ERROR_REF(error));
 }
 
 int grpc_channel_num_external_connectivity_watchers(grpc_channel *channel) {
@@ -191,13 +191,19 @@ static void watcher_timer_init(grpc_exec_ctx *exec_ctx, void *arg,
   gpr_free(wa);
 }
 
+int grpc_channel_support_connectivity_watcher(grpc_channel *channel) {
+  grpc_channel_element *client_channel_elem =
+      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
+  return client_channel_elem->filter != &grpc_client_channel_filter ? 0 : 1;
+}
+
 void grpc_channel_watch_connectivity_state(
     grpc_channel *channel, grpc_connectivity_state last_observed_state,
     gpr_timespec deadline, grpc_completion_queue *cq, void *tag) {
   grpc_channel_element *client_channel_elem =
       grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel));
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  state_watcher *w = gpr_malloc(sizeof(*w));
+  state_watcher *w = (state_watcher *)gpr_malloc(sizeof(*w));
 
   GRPC_API_TRACE(
       "grpc_channel_watch_connectivity_state("
@@ -222,7 +228,8 @@ void grpc_channel_watch_connectivity_state(
   w->channel = channel;
   w->error = NULL;
 
-  watcher_timer_init_arg *wa = gpr_malloc(sizeof(watcher_timer_init_arg));
+  watcher_timer_init_arg *wa =
+      (watcher_timer_init_arg *)gpr_malloc(sizeof(watcher_timer_init_arg));
   wa->w = w;
   wa->deadline = deadline;
   GRPC_CLOSURE_INIT(&w->watcher_timer_init, watcher_timer_init, wa,
diff --git a/src/core/ext/filters/client_channel/client_channel.c b/src/core/ext/filters/client_channel/client_channel.c
index 58e31d7b45..016199b1f4 100644
--- a/src/core/ext/filters/client_channel/client_channel.c
+++ b/src/core/ext/filters/client_channel/client_channel.c
@@ -85,7 +85,7 @@ static void method_parameters_unref(method_parameters *method_params) {
 }
 
 static void method_parameters_free(grpc_exec_ctx *exec_ctx, void *value) {
-  method_parameters_unref(value);
+  method_parameters_unref((method_parameters *)value);
 }
 
 static bool parse_wait_for_ready(grpc_json *field,
@@ -148,7 +148,8 @@ static void *method_parameters_create_from_json(const grpc_json *json) {
       if (!parse_timeout(field, &timeout)) return NULL;
     }
   }
-  method_parameters *value = gpr_malloc(sizeof(method_parameters));
+  method_parameters *value =
+      (method_parameters *)gpr_malloc(sizeof(method_parameters));
   gpr_ref_init(&value->refs, 1);
   value->timeout = timeout;
   value->wait_for_ready = wait_for_ready;
@@ -254,7 +255,7 @@ static void set_channel_connectivity_state_locked(grpc_exec_ctx *exec_ctx,
 
 static void on_lb_policy_state_changed_locked(grpc_exec_ctx *exec_ctx,
                                               void *arg, grpc_error *error) {
-  lb_policy_connectivity_watcher *w = arg;
+  lb_policy_connectivity_watcher *w = (lb_policy_connectivity_watcher *)arg;
   grpc_connectivity_state publish_state = w->state;
   /* check if the notification is for the latest policy */
   if (w->lb_policy == w->chand->lb_policy) {
@@ -281,7 +282,8 @@ static void on_lb_policy_state_changed_locked(grpc_exec_ctx *exec_ctx,
 static void watch_lb_policy_locked(grpc_exec_ctx *exec_ctx, channel_data *chand,
                                    grpc_lb_policy *lb_policy,
                                    grpc_connectivity_state current_state) {
-  lb_policy_connectivity_watcher *w = gpr_malloc(sizeof(*w));
+  lb_policy_connectivity_watcher *w =
+      (lb_policy_connectivity_watcher *)gpr_malloc(sizeof(*w));
   GRPC_CHANNEL_STACK_REF(chand->owning_stack, "watch_lb_policy");
   w->chand = chand;
   GRPC_CLOSURE_INIT(&w->on_changed, on_lb_policy_state_changed_locked, w,
@@ -310,7 +312,8 @@ typedef struct {
 } service_config_parsing_state;
 
 static void parse_retry_throttle_params(const grpc_json *field, void *arg) {
-  service_config_parsing_state *parsing_state = arg;
+  service_config_parsing_state *parsing_state =
+      (service_config_parsing_state *)arg;
   if (strcmp(field->key, "retryThrottling") == 0) {
     if (parsing_state->retry_throttle_data != NULL) return;  // Duplicate.
     if (field->type != GRPC_JSON_OBJECT) return;
@@ -365,14 +368,14 @@ static void parse_retry_throttle_params(const grpc_json *field, void *arg) {
 
 static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
                                               void *arg, grpc_error *error) {
-  channel_data *chand = arg;
+  channel_data *chand = (channel_data *)arg;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p: got resolver result: error=%s", chand,
             grpc_error_string(error));
   }
   // Extract the following fields from the resolver result, if non-NULL.
   bool lb_policy_updated = false;
-  char *lb_policy_name = NULL;
+  char *lb_policy_name_dup = NULL;
   bool lb_policy_name_changed = false;
   grpc_lb_policy *new_lb_policy = NULL;
   char *service_config_json = NULL;
@@ -380,6 +383,7 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
   grpc_slice_hash_table *method_params_table = NULL;
   if (chand->resolver_result != NULL) {
     // Find LB policy name.
+    const char *lb_policy_name = NULL;
     const grpc_arg *channel_arg =
         grpc_channel_args_find(chand->resolver_result, GRPC_ARG_LB_POLICY_NAME);
     if (channel_arg != NULL) {
@@ -391,7 +395,8 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
     channel_arg =
         grpc_channel_args_find(chand->resolver_result, GRPC_ARG_LB_ADDRESSES);
     if (channel_arg != NULL && channel_arg->type == GRPC_ARG_POINTER) {
-      grpc_lb_addresses *addresses = channel_arg->value.pointer.p;
+      grpc_lb_addresses *addresses =
+          (grpc_lb_addresses *)channel_arg->value.pointer.p;
       bool found_balancer_address = false;
       for (size_t i = 0; i < addresses->num_addresses; ++i) {
         if (addresses->addresses[i].is_balancer) {
@@ -469,7 +474,7 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
     // Before we clean up, save a copy of lb_policy_name, since it might
     // be pointing to data inside chand->resolver_result.
     // The copy will be saved in chand->lb_policy_name below.
-    lb_policy_name = gpr_strdup(lb_policy_name);
+    lb_policy_name_dup = gpr_strdup(lb_policy_name);
     grpc_channel_args_destroy(exec_ctx, chand->resolver_result);
     chand->resolver_result = NULL;
   }
@@ -477,8 +482,8 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
     gpr_log(GPR_DEBUG,
             "chand=%p: resolver result: lb_policy_name=\"%s\"%s, "
             "service_config=\"%s\"",
-            chand, lb_policy_name, lb_policy_name_changed ? " (changed)" : "",
-            service_config_json);
+            chand, lb_policy_name_dup,
+            lb_policy_name_changed ? " (changed)" : "", service_config_json);
   }
   // Now swap out fields in chand.  Note that the new values may still
   // be NULL if (e.g.) the resolver failed to return results or the
@@ -486,9 +491,9 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
   //
   // First, swap out the data used by cc_get_channel_info().
   gpr_mu_lock(&chand->info_mu);
-  if (lb_policy_name != NULL) {
+  if (lb_policy_name_dup != NULL) {
     gpr_free(chand->info_lb_policy_name);
-    chand->info_lb_policy_name = lb_policy_name;
+    chand->info_lb_policy_name = lb_policy_name_dup;
   }
   if (service_config_json != NULL) {
     gpr_free(chand->info_service_config_json);
@@ -586,9 +591,10 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
 
 static void start_transport_op_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error_ignored) {
-  grpc_transport_op *op = arg;
-  grpc_channel_element *elem = op->handler_private.extra_arg;
-  channel_data *chand = elem->channel_data;
+  grpc_transport_op *op = (grpc_transport_op *)arg;
+  grpc_channel_element *elem =
+      (grpc_channel_element *)op->handler_private.extra_arg;
+  channel_data *chand = (channel_data *)elem->channel_data;
 
   if (op->on_connectivity_state_change != NULL) {
     grpc_connectivity_state_notify_on_state_change(
@@ -642,7 +648,7 @@ static void start_transport_op_locked(grpc_exec_ctx *exec_ctx, void *arg,
 static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
                                   grpc_channel_element *elem,
                                   grpc_transport_op *op) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
 
   GPR_ASSERT(op->set_accept_stream == false);
   if (op->bind_pollset != NULL) {
@@ -662,7 +668,7 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
 static void cc_get_channel_info(grpc_exec_ctx *exec_ctx,
                                 grpc_channel_element *elem,
                                 const grpc_channel_info *info) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   gpr_mu_lock(&chand->info_mu);
   if (info->lb_policy_name != NULL) {
     *info->lb_policy_name = chand->info_lb_policy_name == NULL
@@ -682,7 +688,7 @@ static void cc_get_channel_info(grpc_exec_ctx *exec_ctx,
 static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
                                         grpc_channel_element *elem,
                                         grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GPR_ASSERT(args->is_last);
   GPR_ASSERT(elem->filter == &grpc_client_channel_filter);
   // Initialize data members.
@@ -712,8 +718,10 @@ static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
     return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
         "client channel factory arg must be a pointer");
   }
-  grpc_client_channel_factory_ref(arg->value.pointer.p);
-  chand->client_channel_factory = arg->value.pointer.p;
+  grpc_client_channel_factory_ref(
+      (grpc_client_channel_factory *)arg->value.pointer.p);
+  chand->client_channel_factory =
+      (grpc_client_channel_factory *)arg->value.pointer.p;
   // Get server name to resolve, using proxy mapper if needed.
   arg = grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVER_URI);
   if (arg == NULL) {
@@ -745,7 +753,7 @@ static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
 
 static void shutdown_resolver_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                      grpc_error *error) {
-  grpc_resolver *resolver = arg;
+  grpc_resolver *resolver = (grpc_resolver *)arg;
   grpc_resolver_shutdown_locked(exec_ctx, resolver);
   GRPC_RESOLVER_UNREF(exec_ctx, resolver, "channel");
 }
@@ -753,7 +761,7 @@ static void shutdown_resolver_locked(grpc_exec_ctx *exec_ctx, void *arg,
 /* Destructor for channel_data */
 static void cc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                     grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (chand->resolver != NULL) {
     GRPC_CLOSURE_SCHED(
         exec_ctx, GRPC_CLOSURE_CREATE(shutdown_resolver_locked, chand->resolver,
@@ -796,7 +804,8 @@ static void cc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 //   send_message
 //   recv_trailing_metadata
 //   send_trailing_metadata
-#define MAX_WAITING_BATCHES 6
+// We also add room for a single cancel_stream batch.
+#define MAX_WAITING_BATCHES 7
 
 /** Call data.  Holds a pointer to grpc_subchannel_call and the
     associated machinery to create such a pointer.
@@ -807,24 +816,27 @@ typedef struct client_channel_call_data {
   // State for handling deadlines.
   // The code in deadline_filter.c requires this to be the first field.
   // TODO(roth): This is slightly sub-optimal in that grpc_deadline_state
-  // and this struct both independently store a pointer to the call
-  // stack and each has its own mutex.  If/when we have time, find a way
-  // to avoid this without breaking the grpc_deadline_state abstraction.
+  // and this struct both independently store pointers to the call stack
+  // and call combiner.  If/when we have time, find a way to avoid this
+  // without breaking the grpc_deadline_state abstraction.
   grpc_deadline_state deadline_state;
 
   grpc_slice path;  // Request path.
   gpr_timespec call_start_time;
   gpr_timespec deadline;
+  gpr_arena *arena;
+  grpc_call_stack *owning_call;
+  grpc_call_combiner *call_combiner;
+
   grpc_server_retry_throttle_data *retry_throttle_data;
   method_parameters *method_params;
 
-  /** either 0 for no call, a pointer to a grpc_subchannel_call (if the lowest
-      bit is 0), or a pointer to an error (if the lowest bit is 1) */
-  gpr_atm subchannel_call_or_error;
-  gpr_arena *arena;
+  grpc_subchannel_call *subchannel_call;
+  grpc_error *error;
 
   grpc_lb_policy *lb_policy;  // Holds ref while LB pick is pending.
   grpc_closure lb_pick_closure;
+  grpc_closure lb_pick_cancel_closure;
 
   grpc_connected_subchannel *connected_subchannel;
   grpc_call_context_element subchannel_call_context[GRPC_CONTEXT_COUNT];
@@ -832,10 +844,9 @@ typedef struct client_channel_call_data {
 
   grpc_transport_stream_op_batch *waiting_for_pick_batches[MAX_WAITING_BATCHES];
   size_t waiting_for_pick_batches_count;
+  grpc_closure handle_pending_batch_in_call_combiner[MAX_WAITING_BATCHES];
 
-  grpc_transport_stream_op_batch_payload *initial_metadata_payload;
-
-  grpc_call_stack *owning_call;
+  grpc_transport_stream_op_batch *initial_metadata_batch;
 
   grpc_linked_mdelem lb_token_mdelem;
 
@@ -843,56 +854,43 @@ typedef struct client_channel_call_data {
   grpc_closure *original_on_complete;
 } call_data;
 
-typedef struct {
-  grpc_subchannel_call *subchannel_call;
-  grpc_error *error;
-} call_or_error;
-
-static call_or_error get_call_or_error(call_data *p) {
-  gpr_atm c = gpr_atm_acq_load(&p->subchannel_call_or_error);
-  if (c == 0)
-    return (call_or_error){NULL, NULL};
-  else if (c & 1)
-    return (call_or_error){NULL, (grpc_error *)((c) & ~(gpr_atm)1)};
-  else
-    return (call_or_error){(grpc_subchannel_call *)c, NULL};
+grpc_subchannel_call *grpc_client_channel_get_subchannel_call(
+    grpc_call_element *elem) {
+  call_data *calld = (call_data *)elem->call_data;
+  return calld->subchannel_call;
 }
 
-static bool set_call_or_error(call_data *p, call_or_error coe) {
-  // this should always be under a lock
-  call_or_error existing = get_call_or_error(p);
-  if (existing.error != GRPC_ERROR_NONE) {
-    GRPC_ERROR_UNREF(coe.error);
-    return false;
-  }
-  GPR_ASSERT(existing.subchannel_call == NULL);
-  if (coe.error != GRPC_ERROR_NONE) {
-    GPR_ASSERT(coe.subchannel_call == NULL);
-    gpr_atm_rel_store(&p->subchannel_call_or_error, 1 | (gpr_atm)coe.error);
+// This is called via the call combiner, so access to calld is synchronized.
+static void waiting_for_pick_batches_add(
+    call_data *calld, grpc_transport_stream_op_batch *batch) {
+  if (batch->send_initial_metadata) {
+    GPR_ASSERT(calld->initial_metadata_batch == NULL);
+    calld->initial_metadata_batch = batch;
   } else {
-    GPR_ASSERT(coe.subchannel_call != NULL);
-    gpr_atm_rel_store(&p->subchannel_call_or_error,
-                      (gpr_atm)coe.subchannel_call);
+    GPR_ASSERT(calld->waiting_for_pick_batches_count < MAX_WAITING_BATCHES);
+    calld->waiting_for_pick_batches[calld->waiting_for_pick_batches_count++] =
+        batch;
   }
-  return true;
 }
 
-grpc_subchannel_call *grpc_client_channel_get_subchannel_call(
-    grpc_call_element *call_elem) {
-  return get_call_or_error(call_elem->call_data).subchannel_call;
-}
-
-static void waiting_for_pick_batches_add_locked(
-    call_data *calld, grpc_transport_stream_op_batch *batch) {
-  GPR_ASSERT(calld->waiting_for_pick_batches_count < MAX_WAITING_BATCHES);
-  calld->waiting_for_pick_batches[calld->waiting_for_pick_batches_count++] =
-      batch;
+// This is called via the call combiner, so access to calld is synchronized.
+static void fail_pending_batch_in_call_combiner(grpc_exec_ctx *exec_ctx,
+                                                void *arg, grpc_error *error) {
+  call_data *calld = (call_data *)arg;
+  if (calld->waiting_for_pick_batches_count > 0) {
+    --calld->waiting_for_pick_batches_count;
+    grpc_transport_stream_op_batch_finish_with_failure(
+        exec_ctx,
+        calld->waiting_for_pick_batches[calld->waiting_for_pick_batches_count],
+        GRPC_ERROR_REF(error), calld->call_combiner);
+  }
 }
 
-static void waiting_for_pick_batches_fail_locked(grpc_exec_ctx *exec_ctx,
-                                                 grpc_call_element *elem,
-                                                 grpc_error *error) {
-  call_data *calld = elem->call_data;
+// This is called via the call combiner, so access to calld is synchronized.
+static void waiting_for_pick_batches_fail(grpc_exec_ctx *exec_ctx,
+                                          grpc_call_element *elem,
+                                          grpc_error *error) {
+  call_data *calld = (call_data *)elem->call_data;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG,
             "chand=%p calld=%p: failing %" PRIdPTR " pending batches: %s",
@@ -900,42 +898,68 @@ static void waiting_for_pick_batches_fail_locked(grpc_exec_ctx *exec_ctx,
             grpc_error_string(error));
   }
   for (size_t i = 0; i < calld->waiting_for_pick_batches_count; ++i) {
+    GRPC_CLOSURE_INIT(&calld->handle_pending_batch_in_call_combiner[i],
+                      fail_pending_batch_in_call_combiner, calld,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CALL_COMBINER_START(exec_ctx, calld->call_combiner,
+                             &calld->handle_pending_batch_in_call_combiner[i],
+                             GRPC_ERROR_REF(error),
+                             "waiting_for_pick_batches_fail");
+  }
+  if (calld->initial_metadata_batch != NULL) {
     grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, calld->waiting_for_pick_batches[i], GRPC_ERROR_REF(error));
+        exec_ctx, calld->initial_metadata_batch, GRPC_ERROR_REF(error),
+        calld->call_combiner);
+  } else {
+    GRPC_CALL_COMBINER_STOP(exec_ctx, calld->call_combiner,
+                            "waiting_for_pick_batches_fail");
   }
-  calld->waiting_for_pick_batches_count = 0;
   GRPC_ERROR_UNREF(error);
 }
 
-static void waiting_for_pick_batches_resume_locked(grpc_exec_ctx *exec_ctx,
-                                                   grpc_call_element *elem) {
-  call_data *calld = elem->call_data;
-  if (calld->waiting_for_pick_batches_count == 0) return;
-  call_or_error coe = get_call_or_error(calld);
-  if (coe.error != GRPC_ERROR_NONE) {
-    waiting_for_pick_batches_fail_locked(exec_ctx, elem,
-                                         GRPC_ERROR_REF(coe.error));
-    return;
+// This is called via the call combiner, so access to calld is synchronized.
+static void run_pending_batch_in_call_combiner(grpc_exec_ctx *exec_ctx,
+                                               void *arg, grpc_error *ignored) {
+  call_data *calld = (call_data *)arg;
+  if (calld->waiting_for_pick_batches_count > 0) {
+    --calld->waiting_for_pick_batches_count;
+    grpc_subchannel_call_process_op(
+        exec_ctx, calld->subchannel_call,
+        calld->waiting_for_pick_batches[calld->waiting_for_pick_batches_count]);
   }
+}
+
+// This is called via the call combiner, so access to calld is synchronized.
+static void waiting_for_pick_batches_resume(grpc_exec_ctx *exec_ctx,
+                                            grpc_call_element *elem) {
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p calld=%p: sending %" PRIdPTR
                        " pending batches to subchannel_call=%p",
-            elem->channel_data, calld, calld->waiting_for_pick_batches_count,
-            coe.subchannel_call);
+            chand, calld, calld->waiting_for_pick_batches_count,
+            calld->subchannel_call);
   }
   for (size_t i = 0; i < calld->waiting_for_pick_batches_count; ++i) {
-    grpc_subchannel_call_process_op(exec_ctx, coe.subchannel_call,
-                                    calld->waiting_for_pick_batches[i]);
-  }
-  calld->waiting_for_pick_batches_count = 0;
+    GRPC_CLOSURE_INIT(&calld->handle_pending_batch_in_call_combiner[i],
+                      run_pending_batch_in_call_combiner, calld,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CALL_COMBINER_START(exec_ctx, calld->call_combiner,
+                             &calld->handle_pending_batch_in_call_combiner[i],
+                             GRPC_ERROR_NONE,
+                             "waiting_for_pick_batches_resume");
+  }
+  GPR_ASSERT(calld->initial_metadata_batch != NULL);
+  grpc_subchannel_call_process_op(exec_ctx, calld->subchannel_call,
+                                  calld->initial_metadata_batch);
 }
 
 // Applies service config to the call.  Must be invoked once we know
 // that the resolver has returned results to the channel.
 static void apply_service_config_to_call_locked(grpc_exec_ctx *exec_ctx,
                                                 grpc_call_element *elem) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p calld=%p: applying service config to call",
             chand, calld);
@@ -945,7 +969,7 @@ static void apply_service_config_to_call_locked(grpc_exec_ctx *exec_ctx,
         grpc_server_retry_throttle_data_ref(chand->retry_throttle_data);
   }
   if (chand->method_params_table != NULL) {
-    calld->method_params = grpc_method_config_table_get(
+    calld->method_params = (method_parameters *)grpc_method_config_table_get(
         exec_ctx, chand->method_params_table, calld->path);
     if (calld->method_params != NULL) {
       method_parameters_ref(calld->method_params);
@@ -968,194 +992,97 @@ static void apply_service_config_to_call_locked(grpc_exec_ctx *exec_ctx,
 static void create_subchannel_call_locked(grpc_exec_ctx *exec_ctx,
                                           grpc_call_element *elem,
                                           grpc_error *error) {
-  call_data *calld = elem->call_data;
-  grpc_subchannel_call *subchannel_call = NULL;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   const grpc_connected_subchannel_call_args call_args = {
       .pollent = calld->pollent,
       .path = calld->path,
       .start_time = calld->call_start_time,
       .deadline = calld->deadline,
       .arena = calld->arena,
-      .context = calld->subchannel_call_context};
+      .context = calld->subchannel_call_context,
+      .call_combiner = calld->call_combiner};
   grpc_error *new_error = grpc_connected_subchannel_create_call(
-      exec_ctx, calld->connected_subchannel, &call_args, &subchannel_call);
+      exec_ctx, calld->connected_subchannel, &call_args,
+      &calld->subchannel_call);
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p calld=%p: create subchannel_call=%p: error=%s",
-            elem->channel_data, calld, subchannel_call,
-            grpc_error_string(new_error));
+            chand, calld, calld->subchannel_call, grpc_error_string(new_error));
   }
-  GPR_ASSERT(set_call_or_error(
-      calld, (call_or_error){.subchannel_call = subchannel_call}));
   if (new_error != GRPC_ERROR_NONE) {
     new_error = grpc_error_add_child(new_error, error);
-    waiting_for_pick_batches_fail_locked(exec_ctx, elem, new_error);
+    waiting_for_pick_batches_fail(exec_ctx, elem, new_error);
   } else {
-    waiting_for_pick_batches_resume_locked(exec_ctx, elem);
+    waiting_for_pick_batches_resume(exec_ctx, elem);
   }
   GRPC_ERROR_UNREF(error);
 }
 
-static void subchannel_ready_locked(grpc_exec_ctx *exec_ctx,
-                                    grpc_call_element *elem,
-                                    grpc_error *error) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
-  grpc_polling_entity_del_from_pollset_set(exec_ctx, calld->pollent,
-                                           chand->interested_parties);
-  call_or_error coe = get_call_or_error(calld);
+// Invoked when a pick is completed, on both success or failure.
+static void pick_done_locked(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                             grpc_error *error) {
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (calld->connected_subchannel == NULL) {
     // Failed to create subchannel.
-    grpc_error *failure =
-        error == GRPC_ERROR_NONE
-            ? GRPC_ERROR_CREATE_FROM_STATIC_STRING(
-                  "Call dropped by load balancing policy")
-            : GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
-                  "Failed to create subchannel", &error, 1);
+    GRPC_ERROR_UNREF(calld->error);
+    calld->error = error == GRPC_ERROR_NONE
+                       ? GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                             "Call dropped by load balancing policy")
+                       : GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                             "Failed to create subchannel", &error, 1);
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
       gpr_log(GPR_DEBUG,
               "chand=%p calld=%p: failed to create subchannel: error=%s", chand,
-              calld, grpc_error_string(failure));
-    }
-    set_call_or_error(calld, (call_or_error){.error = GRPC_ERROR_REF(failure)});
-    waiting_for_pick_batches_fail_locked(exec_ctx, elem, failure);
-  } else if (coe.error != GRPC_ERROR_NONE) {
-    /* already cancelled before subchannel became ready */
-    grpc_error *child_errors[] = {error, coe.error};
-    grpc_error *cancellation_error =
-        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
-            "Cancelled before creating subchannel", child_errors,
-            GPR_ARRAY_SIZE(child_errors));
-    /* if due to deadline, attach the deadline exceeded status to the error */
-    if (gpr_time_cmp(calld->deadline, gpr_now(GPR_CLOCK_MONOTONIC)) < 0) {
-      cancellation_error =
-          grpc_error_set_int(cancellation_error, GRPC_ERROR_INT_GRPC_STATUS,
-                             GRPC_STATUS_DEADLINE_EXCEEDED);
+              calld, grpc_error_string(calld->error));
     }
-    if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG,
-              "chand=%p calld=%p: cancelled before subchannel became ready: %s",
-              chand, calld, grpc_error_string(cancellation_error));
-    }
-    waiting_for_pick_batches_fail_locked(exec_ctx, elem, cancellation_error);
+    waiting_for_pick_batches_fail(exec_ctx, elem, GRPC_ERROR_REF(calld->error));
   } else {
     /* Create call on subchannel. */
     create_subchannel_call_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
   }
-  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "pick_subchannel");
   GRPC_ERROR_UNREF(error);
 }
 
-static char *cc_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  call_data *calld = elem->call_data;
-  grpc_subchannel_call *subchannel_call =
-      get_call_or_error(calld).subchannel_call;
-  if (subchannel_call == NULL) {
-    return NULL;
-  } else {
-    return grpc_subchannel_call_get_peer(exec_ctx, subchannel_call);
-  }
+// A wrapper around pick_done_locked() that is used in cases where
+// either (a) the pick was deferred pending a resolver result or (b) the
+// pick was done asynchronously.  Removes the call's polling entity from
+// chand->interested_parties before invoking pick_done_locked().
+static void async_pick_done_locked(grpc_exec_ctx *exec_ctx,
+                                   grpc_call_element *elem, grpc_error *error) {
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  grpc_polling_entity_del_from_pollset_set(exec_ctx, calld->pollent,
+                                           chand->interested_parties);
+  pick_done_locked(exec_ctx, elem, error);
 }
 
-/** Return true if subchannel is available immediately (in which case
-    subchannel_ready_locked() should not be called), or false otherwise (in
-    which case subchannel_ready_locked() should be called when the subchannel
-    is available). */
-static bool pick_subchannel_locked(grpc_exec_ctx *exec_ctx,
-                                   grpc_call_element *elem);
-
-typedef struct {
-  grpc_call_element *elem;
-  bool cancelled;
-  grpc_closure closure;
-} pick_after_resolver_result_args;
-
-static void pick_after_resolver_result_done_locked(grpc_exec_ctx *exec_ctx,
-                                                   void *arg,
-                                                   grpc_error *error) {
-  pick_after_resolver_result_args *args = arg;
-  if (args->cancelled) {
-    /* cancelled, do nothing */
+// Note: This runs under the client_channel combiner, but will NOT be
+// holding the call combiner.
+static void pick_callback_cancel_locked(grpc_exec_ctx *exec_ctx, void *arg,
+                                        grpc_error *error) {
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  if (calld->lb_policy != NULL) {
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG, "call cancelled before resolver result");
-    }
-  } else {
-    channel_data *chand = args->elem->channel_data;
-    call_data *calld = args->elem->call_data;
-    if (error != GRPC_ERROR_NONE) {
-      if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-        gpr_log(GPR_DEBUG, "chand=%p calld=%p: resolver failed to return data",
-                chand, calld);
-      }
-      subchannel_ready_locked(exec_ctx, args->elem, GRPC_ERROR_REF(error));
-    } else {
-      if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-        gpr_log(GPR_DEBUG, "chand=%p calld=%p: resolver returned, doing pick",
-                chand, calld);
-      }
-      if (pick_subchannel_locked(exec_ctx, args->elem)) {
-        subchannel_ready_locked(exec_ctx, args->elem, GRPC_ERROR_NONE);
-      }
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: cancelling pick from LB policy %p",
+              chand, calld, calld->lb_policy);
     }
+    grpc_lb_policy_cancel_pick_locked(exec_ctx, calld->lb_policy,
+                                      &calld->connected_subchannel,
+                                      GRPC_ERROR_REF(error));
   }
-  gpr_free(args);
-}
-
-static void pick_after_resolver_result_start_locked(grpc_exec_ctx *exec_ctx,
-                                                    grpc_call_element *elem) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
-  if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-    gpr_log(GPR_DEBUG,
-            "chand=%p calld=%p: deferring pick pending resolver result", chand,
-            calld);
-  }
-  pick_after_resolver_result_args *args =
-      (pick_after_resolver_result_args *)gpr_zalloc(sizeof(*args));
-  args->elem = elem;
-  GRPC_CLOSURE_INIT(&args->closure, pick_after_resolver_result_done_locked,
-                    args, grpc_combiner_scheduler(chand->combiner));
-  grpc_closure_list_append(&chand->waiting_for_resolver_result_closures,
-                           &args->closure, GRPC_ERROR_NONE);
-}
-
-static void pick_after_resolver_result_cancel_locked(grpc_exec_ctx *exec_ctx,
-                                                     grpc_call_element *elem,
-                                                     grpc_error *error) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
-  // If we don't yet have a resolver result, then a closure for
-  // pick_after_resolver_result_done_locked() will have been added to
-  // chand->waiting_for_resolver_result_closures, and it may not be invoked
-  // until after this call has been destroyed.  We mark the operation as
-  // cancelled, so that when pick_after_resolver_result_done_locked()
-  // is called, it will be a no-op.  We also immediately invoke
-  // subchannel_ready_locked() to propagate the error back to the caller.
-  for (grpc_closure *closure = chand->waiting_for_resolver_result_closures.head;
-       closure != NULL; closure = closure->next_data.next) {
-    pick_after_resolver_result_args *args = closure->cb_arg;
-    if (!args->cancelled && args->elem == elem) {
-      if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-        gpr_log(GPR_DEBUG,
-                "chand=%p calld=%p: "
-                "cancelling pick waiting for resolver result",
-                chand, calld);
-      }
-      args->cancelled = true;
-      subchannel_ready_locked(exec_ctx, elem,
-                              GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
-                                  "Pick cancelled", &error, 1));
-    }
-  }
-  GRPC_ERROR_UNREF(error);
+  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "pick_callback_cancel");
 }
 
 // Callback invoked by grpc_lb_policy_pick_locked() for async picks.
-// Unrefs the LB policy after invoking subchannel_ready_locked().
+// Unrefs the LB policy and invokes async_pick_done_locked().
 static void pick_callback_done_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error) {
-  grpc_call_element *elem = arg;
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p calld=%p: pick completed asynchronously",
             chand, calld);
@@ -1163,28 +1090,51 @@ static void pick_callback_done_locked(grpc_exec_ctx *exec_ctx, void *arg,
   GPR_ASSERT(calld->lb_policy != NULL);
   GRPC_LB_POLICY_UNREF(exec_ctx, calld->lb_policy, "pick_subchannel");
   calld->lb_policy = NULL;
-  subchannel_ready_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
+  async_pick_done_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
 }
 
 // Takes a ref to chand->lb_policy and calls grpc_lb_policy_pick_locked().
 // If the pick was completed synchronously, unrefs the LB policy and
 // returns true.
 static bool pick_callback_start_locked(grpc_exec_ctx *exec_ctx,
-                                       grpc_call_element *elem,
-                                       const grpc_lb_policy_pick_args *inputs) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
+                                       grpc_call_element *elem) {
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
     gpr_log(GPR_DEBUG, "chand=%p calld=%p: starting pick on lb_policy=%p",
             chand, calld, chand->lb_policy);
   }
+  apply_service_config_to_call_locked(exec_ctx, elem);
+  // If the application explicitly set wait_for_ready, use that.
+  // Otherwise, if the service config specified a value for this
+  // method, use that.
+  uint32_t initial_metadata_flags =
+      calld->initial_metadata_batch->payload->send_initial_metadata
+          .send_initial_metadata_flags;
+  const bool wait_for_ready_set_from_api =
+      initial_metadata_flags &
+      GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET;
+  const bool wait_for_ready_set_from_service_config =
+      calld->method_params != NULL &&
+      calld->method_params->wait_for_ready != WAIT_FOR_READY_UNSET;
+  if (!wait_for_ready_set_from_api && wait_for_ready_set_from_service_config) {
+    if (calld->method_params->wait_for_ready == WAIT_FOR_READY_TRUE) {
+      initial_metadata_flags |= GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+    } else {
+      initial_metadata_flags &= ~GRPC_INITIAL_METADATA_WAIT_FOR_READY;
+    }
+  }
+  const grpc_lb_policy_pick_args inputs = {
+      calld->initial_metadata_batch->payload->send_initial_metadata
+          .send_initial_metadata,
+      initial_metadata_flags, &calld->lb_token_mdelem};
   // Keep a ref to the LB policy in calld while the pick is pending.
   GRPC_LB_POLICY_REF(chand->lb_policy, "pick_subchannel");
   calld->lb_policy = chand->lb_policy;
   GRPC_CLOSURE_INIT(&calld->lb_pick_closure, pick_callback_done_locked, elem,
                     grpc_combiner_scheduler(chand->combiner));
   const bool pick_done = grpc_lb_policy_pick_locked(
-      exec_ctx, chand->lb_policy, inputs, &calld->connected_subchannel,
+      exec_ctx, chand->lb_policy, &inputs, &calld->connected_subchannel,
       calld->subchannel_call_context, NULL, &calld->lb_pick_closure);
   if (pick_done) {
     /* synchronous grpc_lb_policy_pick call. Unref the LB policy. */
@@ -1194,160 +1144,160 @@ static bool pick_callback_start_locked(grpc_exec_ctx *exec_ctx,
     }
     GRPC_LB_POLICY_UNREF(exec_ctx, calld->lb_policy, "pick_subchannel");
     calld->lb_policy = NULL;
+  } else {
+    GRPC_CALL_STACK_REF(calld->owning_call, "pick_callback_cancel");
+    grpc_call_combiner_set_notify_on_cancel(
+        exec_ctx, calld->call_combiner,
+        GRPC_CLOSURE_INIT(&calld->lb_pick_cancel_closure,
+                          pick_callback_cancel_locked, elem,
+                          grpc_combiner_scheduler(chand->combiner)));
   }
   return pick_done;
 }
 
-static void pick_callback_cancel_locked(grpc_exec_ctx *exec_ctx,
-                                        grpc_call_element *elem,
-                                        grpc_error *error) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
-  GPR_ASSERT(calld->lb_policy != NULL);
-  if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-    gpr_log(GPR_DEBUG, "chand=%p calld=%p: cancelling pick from LB policy %p",
-            chand, calld, calld->lb_policy);
-  }
-  grpc_lb_policy_cancel_pick_locked(exec_ctx, calld->lb_policy,
-                                    &calld->connected_subchannel, error);
-}
+typedef struct {
+  grpc_call_element *elem;
+  bool finished;
+  grpc_closure closure;
+  grpc_closure cancel_closure;
+} pick_after_resolver_result_args;
 
-static bool pick_subchannel_locked(grpc_exec_ctx *exec_ctx,
-                                   grpc_call_element *elem) {
-  GPR_TIMER_BEGIN("pick_subchannel", 0);
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
-  bool pick_done = false;
-  if (chand->lb_policy != NULL) {
-    apply_service_config_to_call_locked(exec_ctx, elem);
-    // If the application explicitly set wait_for_ready, use that.
-    // Otherwise, if the service config specified a value for this
-    // method, use that.
-    uint32_t initial_metadata_flags =
-        calld->initial_metadata_payload->send_initial_metadata
-            .send_initial_metadata_flags;
-    const bool wait_for_ready_set_from_api =
-        initial_metadata_flags &
-        GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET;
-    const bool wait_for_ready_set_from_service_config =
-        calld->method_params != NULL &&
-        calld->method_params->wait_for_ready != WAIT_FOR_READY_UNSET;
-    if (!wait_for_ready_set_from_api &&
-        wait_for_ready_set_from_service_config) {
-      if (calld->method_params->wait_for_ready == WAIT_FOR_READY_TRUE) {
-        initial_metadata_flags |= GRPC_INITIAL_METADATA_WAIT_FOR_READY;
-      } else {
-        initial_metadata_flags &= ~GRPC_INITIAL_METADATA_WAIT_FOR_READY;
-      }
-    }
-    const grpc_lb_policy_pick_args inputs = {
-        calld->initial_metadata_payload->send_initial_metadata
-            .send_initial_metadata,
-        initial_metadata_flags, &calld->lb_token_mdelem};
-    pick_done = pick_callback_start_locked(exec_ctx, elem, &inputs);
-  } else if (chand->resolver != NULL) {
-    if (!chand->started_resolving) {
-      start_resolving_locked(exec_ctx, chand);
-    }
-    pick_after_resolver_result_start_locked(exec_ctx, elem);
-  } else {
-    subchannel_ready_locked(
-        exec_ctx, elem, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Disconnected"));
+// Note: This runs under the client_channel combiner, but will NOT be
+// holding the call combiner.
+static void pick_after_resolver_result_cancel_locked(grpc_exec_ctx *exec_ctx,
+                                                     void *arg,
+                                                     grpc_error *error) {
+  pick_after_resolver_result_args *args =
+      (pick_after_resolver_result_args *)arg;
+  if (args->finished) {
+    gpr_free(args);
+    return;
   }
-  GPR_TIMER_END("pick_subchannel", 0);
-  return pick_done;
+  // If we don't yet have a resolver result, then a closure for
+  // pick_after_resolver_result_done_locked() will have been added to
+  // chand->waiting_for_resolver_result_closures, and it may not be invoked
+  // until after this call has been destroyed.  We mark the operation as
+  // finished, so that when pick_after_resolver_result_done_locked()
+  // is called, it will be a no-op.  We also immediately invoke
+  // async_pick_done_locked() to propagate the error back to the caller.
+  args->finished = true;
+  grpc_call_element *elem = args->elem;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
+    gpr_log(GPR_DEBUG,
+            "chand=%p calld=%p: cancelling pick waiting for resolver result",
+            chand, calld);
+  }
+  // Note: Although we are not in the call combiner here, we are
+  // basically stealing the call combiner from the pending pick, so
+  // it's safe to call async_pick_done_locked() here -- we are
+  // essentially calling it here instead of calling it in
+  // pick_after_resolver_result_done_locked().
+  async_pick_done_locked(exec_ctx, elem,
+                         GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                             "Pick cancelled", &error, 1));
 }
 
-static void start_transport_stream_op_batch_locked(grpc_exec_ctx *exec_ctx,
+static void pick_after_resolver_result_done_locked(grpc_exec_ctx *exec_ctx,
                                                    void *arg,
-                                                   grpc_error *error_ignored) {
-  GPR_TIMER_BEGIN("start_transport_stream_op_batch_locked", 0);
-  grpc_transport_stream_op_batch *batch = arg;
-  grpc_call_element *elem = batch->handler_private.extra_arg;
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
-  /* need to recheck that another thread hasn't set the call */
-  call_or_error coe = get_call_or_error(calld);
-  if (coe.error != GRPC_ERROR_NONE) {
+                                                   grpc_error *error) {
+  pick_after_resolver_result_args *args =
+      (pick_after_resolver_result_args *)arg;
+  if (args->finished) {
+    /* cancelled, do nothing */
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG, "chand=%p calld=%p: failing batch with error: %s",
-              chand, calld, grpc_error_string(coe.error));
+      gpr_log(GPR_DEBUG, "call cancelled before resolver result");
     }
-    grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, batch, GRPC_ERROR_REF(coe.error));
-    goto done;
+    gpr_free(args);
+    return;
   }
-  if (coe.subchannel_call != NULL) {
+  args->finished = true;
+  grpc_call_element *elem = args->elem;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  if (error != GRPC_ERROR_NONE) {
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG,
-              "chand=%p calld=%p: sending batch to subchannel_call=%p", chand,
-              calld, coe.subchannel_call);
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: resolver failed to return data",
+              chand, calld);
     }
-    grpc_subchannel_call_process_op(exec_ctx, coe.subchannel_call, batch);
-    goto done;
-  }
-  // Add to waiting-for-pick list.  If we succeed in getting a
-  // subchannel call below, we'll handle this batch (along with any
-  // other waiting batches) in waiting_for_pick_batches_resume_locked().
-  waiting_for_pick_batches_add_locked(calld, batch);
-  // If this is a cancellation, cancel the pending pick (if any) and
-  // fail any pending batches.
-  if (batch->cancel_stream) {
-    grpc_error *error = batch->payload->cancel_stream.cancel_error;
+    async_pick_done_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
+  } else {
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG, "chand=%p calld=%p: recording cancel_error=%s", chand,
-              calld, grpc_error_string(error));
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: resolver returned, doing pick",
+              chand, calld);
     }
-    /* Stash a copy of cancel_error in our call data, so that we can use
-       it for subsequent operations.  This ensures that if the call is
-       cancelled before any batches are passed down (e.g., if the deadline
-       is in the past when the call starts), we can return the right
-       error to the caller when the first batch does get passed down. */
-    set_call_or_error(calld, (call_or_error){.error = GRPC_ERROR_REF(error)});
-    if (calld->lb_policy != NULL) {
-      pick_callback_cancel_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
-    } else {
-      pick_after_resolver_result_cancel_locked(exec_ctx, elem,
-                                               GRPC_ERROR_REF(error));
+    if (pick_callback_start_locked(exec_ctx, elem)) {
+      // Even if the LB policy returns a result synchronously, we have
+      // already added our polling entity to chand->interested_parties
+      // in order to wait for the resolver result, so we need to
+      // remove it here.  Therefore, we call async_pick_done_locked()
+      // instead of pick_done_locked().
+      async_pick_done_locked(exec_ctx, elem, GRPC_ERROR_NONE);
     }
-    waiting_for_pick_batches_fail_locked(exec_ctx, elem, GRPC_ERROR_REF(error));
-    goto done;
   }
-  /* if we don't have a subchannel, try to get one */
-  if (batch->send_initial_metadata) {
-    GPR_ASSERT(calld->connected_subchannel == NULL);
-    calld->initial_metadata_payload = batch->payload;
-    GRPC_CALL_STACK_REF(calld->owning_call, "pick_subchannel");
-    /* If a subchannel is not available immediately, the polling entity from
-       call_data should be provided to channel_data's interested_parties, so
-       that IO of the lb_policy and resolver could be done under it. */
-    if (pick_subchannel_locked(exec_ctx, elem)) {
-      // Pick was returned synchronously.
-      GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "pick_subchannel");
-      if (calld->connected_subchannel == NULL) {
-        grpc_error *error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
-            "Call dropped by load balancing policy");
-        set_call_or_error(calld,
-                          (call_or_error){.error = GRPC_ERROR_REF(error)});
-        waiting_for_pick_batches_fail_locked(exec_ctx, elem, error);
-      } else {
-        // Create subchannel call.
-        create_subchannel_call_locked(exec_ctx, elem, GRPC_ERROR_NONE);
-      }
-    } else {
-      grpc_polling_entity_add_to_pollset_set(exec_ctx, calld->pollent,
-                                             chand->interested_parties);
+}
+
+static void pick_after_resolver_result_start_locked(grpc_exec_ctx *exec_ctx,
+                                                    grpc_call_element *elem) {
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
+    gpr_log(GPR_DEBUG,
+            "chand=%p calld=%p: deferring pick pending resolver result", chand,
+            calld);
+  }
+  pick_after_resolver_result_args *args =
+      (pick_after_resolver_result_args *)gpr_zalloc(sizeof(*args));
+  args->elem = elem;
+  GRPC_CLOSURE_INIT(&args->closure, pick_after_resolver_result_done_locked,
+                    args, grpc_combiner_scheduler(chand->combiner));
+  grpc_closure_list_append(&chand->waiting_for_resolver_result_closures,
+                           &args->closure, GRPC_ERROR_NONE);
+  grpc_call_combiner_set_notify_on_cancel(
+      exec_ctx, calld->call_combiner,
+      GRPC_CLOSURE_INIT(&args->cancel_closure,
+                        pick_after_resolver_result_cancel_locked, args,
+                        grpc_combiner_scheduler(chand->combiner)));
+}
+
+static void start_pick_locked(grpc_exec_ctx *exec_ctx, void *arg,
+                              grpc_error *ignored) {
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  GPR_ASSERT(calld->connected_subchannel == NULL);
+  if (chand->lb_policy != NULL) {
+    // We already have an LB policy, so ask it for a pick.
+    if (pick_callback_start_locked(exec_ctx, elem)) {
+      // Pick completed synchronously.
+      pick_done_locked(exec_ctx, elem, GRPC_ERROR_NONE);
+      return;
+    }
+  } else {
+    // We do not yet have an LB policy, so wait for a resolver result.
+    if (chand->resolver == NULL) {
+      pick_done_locked(exec_ctx, elem,
+                       GRPC_ERROR_CREATE_FROM_STATIC_STRING("Disconnected"));
+      return;
+    }
+    if (!chand->started_resolving) {
+      start_resolving_locked(exec_ctx, chand);
     }
+    pick_after_resolver_result_start_locked(exec_ctx, elem);
   }
-done:
-  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call,
-                        "start_transport_stream_op_batch");
-  GPR_TIMER_END("start_transport_stream_op_batch_locked", 0);
+  // We need to wait for either a resolver result or for an async result
+  // from the LB policy.  Add the polling entity from call_data to the
+  // channel_data's interested_parties, so that the I/O of the LB policy
+  // and resolver can be done under it.  The polling entity will be
+  // removed in async_pick_done_locked().
+  grpc_polling_entity_add_to_pollset_set(exec_ctx, calld->pollent,
+                                         chand->interested_parties);
 }
 
 static void on_complete(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_call_element *elem = arg;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  call_data *calld = (call_data *)elem->call_data;
   if (calld->retry_throttle_data != NULL) {
     if (error == GRPC_ERROR_NONE) {
       grpc_server_retry_throttle_data_record_success(
@@ -1365,27 +1315,49 @@ static void on_complete(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
                    GRPC_ERROR_REF(error));
 }
 
-/* The logic here is fairly complicated, due to (a) the fact that we
-   need to handle the case where we receive the send op before the
-   initial metadata op, and (b) the need for efficiency, especially in
-   the streaming case.
-
-   We use double-checked locking to initially see if initialization has been
-   performed. If it has not, we acquire the combiner and perform initialization.
-   If it has, we proceed on the fast path. */
 static void cc_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *batch) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
-  if (GRPC_TRACER_ON(grpc_client_channel_trace) ||
-      GRPC_TRACER_ON(grpc_trace_channel)) {
-    grpc_call_log_op(GPR_INFO, elem, batch);
-  }
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (chand->deadline_checking_enabled) {
     grpc_deadline_state_client_start_transport_stream_op_batch(exec_ctx, elem,
                                                                batch);
   }
+  GPR_TIMER_BEGIN("cc_start_transport_stream_op_batch", 0);
+  // If we've previously been cancelled, immediately fail any new batches.
+  if (calld->error != GRPC_ERROR_NONE) {
+    if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: failing batch with error: %s",
+              chand, calld, grpc_error_string(calld->error));
+    }
+    grpc_transport_stream_op_batch_finish_with_failure(
+        exec_ctx, batch, GRPC_ERROR_REF(calld->error), calld->call_combiner);
+    goto done;
+  }
+  if (batch->cancel_stream) {
+    // Stash a copy of cancel_error in our call data, so that we can use
+    // it for subsequent operations.  This ensures that if the call is
+    // cancelled before any batches are passed down (e.g., if the deadline
+    // is in the past when the call starts), we can return the right
+    // error to the caller when the first batch does get passed down.
+    GRPC_ERROR_UNREF(calld->error);
+    calld->error = GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
+    if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: recording cancel_error=%s", chand,
+              calld, grpc_error_string(calld->error));
+    }
+    // If we have a subchannel call, send the cancellation batch down.
+    // Otherwise, fail all pending batches.
+    if (calld->subchannel_call != NULL) {
+      grpc_subchannel_call_process_op(exec_ctx, calld->subchannel_call, batch);
+    } else {
+      waiting_for_pick_batches_add(calld, batch);
+      waiting_for_pick_batches_fail(exec_ctx, elem,
+                                    GRPC_ERROR_REF(calld->error));
+    }
+    goto done;
+  }
   // Intercept on_complete for recv_trailing_metadata so that we can
   // check retry throttle status.
   if (batch->recv_trailing_metadata) {
@@ -1395,38 +1367,44 @@ static void cc_start_transport_stream_op_batch(
                       grpc_schedule_on_exec_ctx);
     batch->on_complete = &calld->on_complete;
   }
-  /* try to (atomically) get the call */
-  call_or_error coe = get_call_or_error(calld);
-  GPR_TIMER_BEGIN("cc_start_transport_stream_op_batch", 0);
-  if (coe.error != GRPC_ERROR_NONE) {
+  // Check if we've already gotten a subchannel call.
+  // Note that once we have completed the pick, we do not need to enter
+  // the channel combiner, which is more efficient (especially for
+  // streaming calls).
+  if (calld->subchannel_call != NULL) {
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-      gpr_log(GPR_DEBUG, "chand=%p calld=%p: failing batch with error: %s",
-              chand, calld, grpc_error_string(coe.error));
+      gpr_log(GPR_DEBUG,
+              "chand=%p calld=%p: sending batch to subchannel_call=%p", chand,
+              calld, calld->subchannel_call);
     }
-    grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, batch, GRPC_ERROR_REF(coe.error));
+    grpc_subchannel_call_process_op(exec_ctx, calld->subchannel_call, batch);
     goto done;
   }
-  if (coe.subchannel_call != NULL) {
+  // We do not yet have a subchannel call.
+  // Add the batch to the waiting-for-pick list.
+  waiting_for_pick_batches_add(calld, batch);
+  // For batches containing a send_initial_metadata op, enter the channel
+  // combiner to start a pick.
+  if (batch->send_initial_metadata) {
+    if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
+      gpr_log(GPR_DEBUG, "chand=%p calld=%p: entering client_channel combiner",
+              chand, calld);
+    }
+    GRPC_CLOSURE_SCHED(
+        exec_ctx,
+        GRPC_CLOSURE_INIT(&batch->handler_private.closure, start_pick_locked,
+                          elem, grpc_combiner_scheduler(chand->combiner)),
+        GRPC_ERROR_NONE);
+  } else {
+    // For all other batches, release the call combiner.
     if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
       gpr_log(GPR_DEBUG,
-              "chand=%p calld=%p: sending batch to subchannel_call=%p", chand,
-              calld, coe.subchannel_call);
+              "chand=%p calld=%p: saved batch, yeilding call combiner", chand,
+              calld);
     }
-    grpc_subchannel_call_process_op(exec_ctx, coe.subchannel_call, batch);
-    goto done;
+    GRPC_CALL_COMBINER_STOP(exec_ctx, calld->call_combiner,
+                            "batch does not include send_initial_metadata");
   }
-  /* we failed; lock and figure out what to do */
-  if (GRPC_TRACER_ON(grpc_client_channel_trace)) {
-    gpr_log(GPR_DEBUG, "chand=%p calld=%p: entering combiner", chand, calld);
-  }
-  GRPC_CALL_STACK_REF(calld->owning_call, "start_transport_stream_op_batch");
-  batch->handler_private.extra_arg = elem;
-  GRPC_CLOSURE_SCHED(
-      exec_ctx, GRPC_CLOSURE_INIT(&batch->handler_private.closure,
-                                  start_transport_stream_op_batch_locked, batch,
-                                  grpc_combiner_scheduler(chand->combiner)),
-      GRPC_ERROR_NONE);
 done:
   GPR_TIMER_END("cc_start_transport_stream_op_batch", 0);
 }
@@ -1435,16 +1413,18 @@ done:
 static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
                                      const grpc_call_element_args *args) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   // Initialize data members.
   calld->path = grpc_slice_ref_internal(args->path);
   calld->call_start_time = args->start_time;
   calld->deadline = gpr_convert_clock_type(args->deadline, GPR_CLOCK_MONOTONIC);
-  calld->owning_call = args->call_stack;
   calld->arena = args->arena;
+  calld->owning_call = args->call_stack;
+  calld->call_combiner = args->call_combiner;
   if (chand->deadline_checking_enabled) {
-    grpc_deadline_state_init(exec_ctx, elem, args->call_stack, calld->deadline);
+    grpc_deadline_state_init(exec_ctx, elem, args->call_stack,
+                             args->call_combiner, calld->deadline);
   }
   return GRPC_ERROR_NONE;
 }
@@ -1454,8 +1434,8 @@ static void cc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_call_element *elem,
                                  const grpc_call_final_info *final_info,
                                  grpc_closure *then_schedule_closure) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (chand->deadline_checking_enabled) {
     grpc_deadline_state_destroy(exec_ctx, elem);
   }
@@ -1463,13 +1443,12 @@ static void cc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
   if (calld->method_params != NULL) {
     method_parameters_unref(calld->method_params);
   }
-  call_or_error coe = get_call_or_error(calld);
-  GRPC_ERROR_UNREF(coe.error);
-  if (coe.subchannel_call != NULL) {
-    grpc_subchannel_call_set_cleanup_closure(coe.subchannel_call,
+  GRPC_ERROR_UNREF(calld->error);
+  if (calld->subchannel_call != NULL) {
+    grpc_subchannel_call_set_cleanup_closure(calld->subchannel_call,
                                              then_schedule_closure);
     then_schedule_closure = NULL;
-    GRPC_SUBCHANNEL_CALL_UNREF(exec_ctx, coe.subchannel_call,
+    GRPC_SUBCHANNEL_CALL_UNREF(exec_ctx, calld->subchannel_call,
                                "client_channel_destroy_call");
   }
   GPR_ASSERT(calld->lb_policy == NULL);
@@ -1490,7 +1469,7 @@ static void cc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
 static void cc_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
                                           grpc_call_element *elem,
                                           grpc_polling_entity *pollent) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   calld->pollent = pollent;
 }
 
@@ -1508,14 +1487,13 @@ const grpc_channel_filter grpc_client_channel_filter = {
     sizeof(channel_data),
     cc_init_channel_elem,
     cc_destroy_channel_elem,
-    cc_get_peer,
     cc_get_channel_info,
     "client-channel",
 };
 
 static void try_to_connect_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                   grpc_error *error_ignored) {
-  channel_data *chand = arg;
+  channel_data *chand = (channel_data *)arg;
   if (chand->lb_policy != NULL) {
     grpc_lb_policy_exit_idle_locked(exec_ctx, chand->lb_policy);
   } else {
@@ -1529,7 +1507,7 @@ static void try_to_connect_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   grpc_connectivity_state out =
       grpc_connectivity_state_check(&chand->state_tracker);
   if (out == GRPC_CHANNEL_IDLE && try_to_connect) {
@@ -1600,7 +1578,7 @@ static void external_connectivity_watcher_list_remove(
 
 int grpc_client_channel_num_external_connectivity_watchers(
     grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   int count = 0;
 
   gpr_mu_lock(&chand->external_connectivity_watcher_list_mu);
@@ -1617,7 +1595,7 @@ int grpc_client_channel_num_external_connectivity_watchers(
 
 static void on_external_watch_complete(grpc_exec_ctx *exec_ctx, void *arg,
                                        grpc_error *error) {
-  external_connectivity_watcher *w = arg;
+  external_connectivity_watcher *w = (external_connectivity_watcher *)arg;
   grpc_closure *follow_up = w->on_complete;
   grpc_polling_entity_del_from_pollset_set(exec_ctx, &w->pollent,
                                            w->chand->interested_parties);
@@ -1630,7 +1608,7 @@ static void on_external_watch_complete(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void watch_connectivity_state_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                             grpc_error *error_ignored) {
-  external_connectivity_watcher *w = arg;
+  external_connectivity_watcher *w = (external_connectivity_watcher *)arg;
   external_connectivity_watcher *found = NULL;
   if (w->state != NULL) {
     external_connectivity_watcher_list_append(w->chand, w);
@@ -1659,8 +1637,9 @@ void grpc_client_channel_watch_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
     grpc_polling_entity pollent, grpc_connectivity_state *state,
     grpc_closure *closure, grpc_closure *watcher_timer_init) {
-  channel_data *chand = elem->channel_data;
-  external_connectivity_watcher *w = gpr_zalloc(sizeof(*w));
+  channel_data *chand = (channel_data *)elem->channel_data;
+  external_connectivity_watcher *w =
+      (external_connectivity_watcher *)gpr_zalloc(sizeof(*w));
   w->chand = chand;
   w->pollent = pollent;
   w->on_complete = closure;
diff --git a/src/core/ext/filters/client_channel/client_channel_factory.c b/src/core/ext/filters/client_channel/client_channel_factory.c
index 7220a8639e..57eac8f875 100644
--- a/src/core/ext/filters/client_channel/client_channel_factory.c
+++ b/src/core/ext/filters/client_channel/client_channel_factory.c
@@ -43,14 +43,13 @@ grpc_channel* grpc_client_channel_factory_create_channel(
 }
 
 static void* factory_arg_copy(void* factory) {
-  grpc_client_channel_factory_ref(factory);
+  grpc_client_channel_factory_ref((grpc_client_channel_factory*)factory);
   return factory;
 }
 
 static void factory_arg_destroy(grpc_exec_ctx* exec_ctx, void* factory) {
-  // TODO(roth): Remove local exec_ctx when
-  // https://github.com/grpc/grpc/pull/8705 is merged.
-  grpc_client_channel_factory_unref(exec_ctx, factory);
+  grpc_client_channel_factory_unref(exec_ctx,
+                                    (grpc_client_channel_factory*)factory);
 }
 
 static int factory_arg_cmp(void* factory1, void* factory2) {
@@ -64,6 +63,6 @@ static const grpc_arg_pointer_vtable factory_arg_vtable = {
 
 grpc_arg grpc_client_channel_factory_create_channel_arg(
     grpc_client_channel_factory* factory) {
-  return grpc_channel_arg_pointer_create(GRPC_ARG_CLIENT_CHANNEL_FACTORY,
+  return grpc_channel_arg_pointer_create((char*)GRPC_ARG_CLIENT_CHANNEL_FACTORY,
                                          factory, &factory_arg_vtable);
 }
diff --git a/src/core/ext/filters/client_channel/client_channel_plugin.c b/src/core/ext/filters/client_channel/client_channel_plugin.c
index c32e83d012..1f71c5a7f9 100644
--- a/src/core/ext/filters/client_channel/client_channel_plugin.c
+++ b/src/core/ext/filters/client_channel/client_channel_plugin.c
@@ -54,8 +54,8 @@ static bool set_default_host_if_unset(grpc_exec_ctx *exec_ctx,
   char *default_authority = grpc_get_default_authority(
       exec_ctx, grpc_channel_stack_builder_get_target(builder));
   if (default_authority != NULL) {
-    grpc_arg arg = grpc_channel_arg_string_create(GRPC_ARG_DEFAULT_AUTHORITY,
-                                                  default_authority);
+    grpc_arg arg = grpc_channel_arg_string_create(
+        (char *)GRPC_ARG_DEFAULT_AUTHORITY, default_authority);
     grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
     grpc_channel_stack_builder_set_channel_arguments(exec_ctx, builder,
                                                      new_args);
diff --git a/src/core/ext/filters/client_channel/http_connect_handshaker.c b/src/core/ext/filters/client_channel/http_connect_handshaker.c
index 0952dc6d4e..418bb41ef6 100644
--- a/src/core/ext/filters/client_channel/http_connect_handshaker.c
+++ b/src/core/ext/filters/client_channel/http_connect_handshaker.c
@@ -124,7 +124,7 @@ static void handshake_failed_locked(grpc_exec_ctx* exec_ctx,
 // Callback invoked when finished writing HTTP CONNECT request.
 static void on_write_done(grpc_exec_ctx* exec_ctx, void* arg,
                           grpc_error* error) {
-  http_connect_handshaker* handshaker = arg;
+  http_connect_handshaker* handshaker = (http_connect_handshaker*)arg;
   gpr_mu_lock(&handshaker->mu);
   if (error != GRPC_ERROR_NONE || handshaker->shutdown) {
     // If the write failed or we're shutting down, clean up and invoke the
@@ -145,7 +145,7 @@ static void on_write_done(grpc_exec_ctx* exec_ctx, void* arg,
 // Callback invoked for reading HTTP CONNECT response.
 static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
                          grpc_error* error) {
-  http_connect_handshaker* handshaker = arg;
+  http_connect_handshaker* handshaker = (http_connect_handshaker*)arg;
   gpr_mu_lock(&handshaker->mu);
   if (error != GRPC_ERROR_NONE || handshaker->shutdown) {
     // If the read failed or we're shutting down, clean up and invoke the
@@ -281,7 +281,8 @@ static void http_connect_handshaker_do_handshake(
     GPR_ASSERT(arg->type == GRPC_ARG_STRING);
     gpr_string_split(arg->value.string, "\n", &header_strings,
                      &num_header_strings);
-    headers = gpr_malloc(sizeof(grpc_http_header) * num_header_strings);
+    headers = (grpc_http_header*)gpr_malloc(sizeof(grpc_http_header) *
+                                            num_header_strings);
     for (size_t i = 0; i < num_header_strings; ++i) {
       char* sep = strchr(header_strings[i], ':');
       if (sep == NULL) {
@@ -308,7 +309,7 @@ static void http_connect_handshaker_do_handshake(
   grpc_httpcli_request request;
   memset(&request, 0, sizeof(request));
   request.host = server_name;
-  request.http.method = "CONNECT";
+  request.http.method = (char*)"CONNECT";
   request.http.path = server_name;
   request.http.hdrs = headers;
   request.http.hdr_count = num_headers;
@@ -333,7 +334,8 @@ static const grpc_handshaker_vtable http_connect_handshaker_vtable = {
     http_connect_handshaker_do_handshake};
 
 static grpc_handshaker* grpc_http_connect_handshaker_create() {
-  http_connect_handshaker* handshaker = gpr_malloc(sizeof(*handshaker));
+  http_connect_handshaker* handshaker =
+      (http_connect_handshaker*)gpr_malloc(sizeof(*handshaker));
   memset(handshaker, 0, sizeof(*handshaker));
   grpc_handshaker_init(&http_connect_handshaker_vtable, &handshaker->base);
   gpr_mu_init(&handshaker->mu);
diff --git a/src/core/ext/filters/client_channel/http_proxy.c b/src/core/ext/filters/client_channel/http_proxy.c
index ef3512ed83..c507a2750e 100644
--- a/src/core/ext/filters/client_channel/http_proxy.c
+++ b/src/core/ext/filters/client_channel/http_proxy.c
@@ -44,6 +44,8 @@ static char* get_http_proxy_server(grpc_exec_ctx* exec_ctx, char** user_cred) {
   GPR_ASSERT(user_cred != NULL);
   char* proxy_name = NULL;
   char* uri_str = gpr_getenv("http_proxy");
+  char** authority_strs = NULL;
+  size_t authority_nstrs;
   if (uri_str == NULL) return NULL;
   grpc_uri* uri =
       grpc_uri_parse(exec_ctx, uri_str, false /* suppress_errors */);
@@ -56,8 +58,6 @@ static char* get_http_proxy_server(grpc_exec_ctx* exec_ctx, char** user_cred) {
     goto done;
   }
   /* Split on '@' to separate user credentials from host */
-  char** authority_strs = NULL;
-  size_t authority_nstrs;
   gpr_string_split(uri->authority, "@", &authority_strs, &authority_nstrs);
   GPR_ASSERT(authority_nstrs != 0); /* should have at least 1 string */
   if (authority_nstrs == 1) {
@@ -157,7 +157,7 @@ static bool proxy_mapper_map_name(grpc_exec_ctx* exec_ctx,
   }
   grpc_arg args_to_add[2];
   args_to_add[0] = grpc_channel_arg_string_create(
-      GRPC_ARG_HTTP_CONNECT_SERVER,
+      (char*)GRPC_ARG_HTTP_CONNECT_SERVER,
       uri->path[0] == '/' ? uri->path + 1 : uri->path);
   if (user_cred != NULL) {
     /* Use base64 encoding for user credentials as stated in RFC 7617 */
@@ -166,8 +166,8 @@ static bool proxy_mapper_map_name(grpc_exec_ctx* exec_ctx,
     char* header;
     gpr_asprintf(&header, "Proxy-Authorization:Basic %s", encoded_user_cred);
     gpr_free(encoded_user_cred);
-    args_to_add[1] =
-        grpc_channel_arg_string_create(GRPC_ARG_HTTP_CONNECT_HEADERS, header);
+    args_to_add[1] = grpc_channel_arg_string_create(
+        (char*)GRPC_ARG_HTTP_CONNECT_HEADERS, header);
     *new_args = grpc_channel_args_copy_and_add(args, args_to_add, 2);
     gpr_free(header);
   } else {
diff --git a/src/core/ext/filters/client_channel/lb_policy.c b/src/core/ext/filters/client_channel/lb_policy.c
index dd95a135cf..8e6673d737 100644
--- a/src/core/ext/filters/client_channel/lb_policy.c
+++ b/src/core/ext/filters/client_channel/lb_policy.c
@@ -67,7 +67,7 @@ void grpc_lb_policy_ref(grpc_lb_policy *policy REF_FUNC_EXTRA_ARGS) {
 
 static void shutdown_locked(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error) {
-  grpc_lb_policy *policy = arg;
+  grpc_lb_policy *policy = (grpc_lb_policy *)arg;
   policy->vtable->shutdown_locked(exec_ctx, policy);
   GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, policy, "strong-unref");
 }
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c
index 568bb2ba8d..7ad322902b 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.c
@@ -49,7 +49,7 @@ typedef struct {
 
 static void on_complete_for_send(grpc_exec_ctx *exec_ctx, void *arg,
                                  grpc_error *error) {
-  call_data *calld = arg;
+  call_data *calld = (call_data *)arg;
   if (error == GRPC_ERROR_NONE) {
     calld->send_initial_metadata_succeeded = true;
   }
@@ -59,7 +59,7 @@ static void on_complete_for_send(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void recv_initial_metadata_ready(grpc_exec_ctx *exec_ctx, void *arg,
                                         grpc_error *error) {
-  call_data *calld = arg;
+  call_data *calld = (call_data *)arg;
   if (error == GRPC_ERROR_NONE) {
     calld->recv_initial_metadata_succeeded = true;
   }
@@ -70,12 +70,13 @@ static void recv_initial_metadata_ready(grpc_exec_ctx *exec_ctx, void *arg,
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   // Get stats object from context and take a ref.
   GPR_ASSERT(args->context != NULL);
   GPR_ASSERT(args->context[GRPC_GRPCLB_CLIENT_STATS].value != NULL);
   calld->client_stats = grpc_grpclb_client_stats_ref(
-      args->context[GRPC_GRPCLB_CLIENT_STATS].value);
+      (grpc_grpclb_client_stats *)args->context[GRPC_GRPCLB_CLIENT_STATS]
+          .value);
   // Record call started.
   grpc_grpclb_client_stats_add_call_started(calld->client_stats);
   return GRPC_ERROR_NONE;
@@ -84,7 +85,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *ignored) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   // Record call finished, optionally setting client_failed_to_send and
   // received.
   grpc_grpclb_client_stats_add_call_finished(
@@ -98,7 +99,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 static void start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *batch) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   GPR_TIMER_BEGIN("clr_start_transport_stream_op_batch", 0);
   // Intercept send_initial_metadata.
   if (batch->send_initial_metadata) {
@@ -132,6 +133,5 @@ const grpc_channel_filter grpc_client_load_reporting_filter = {
     0,  // sizeof(channel_data)
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "client_load_reporting"};
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
index bb9217d843..85ef7894ea 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c
@@ -101,6 +101,7 @@
 #include "src/core/ext/filters/client_channel/lb_policy_registry.h"
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
+#include "src/core/ext/filters/client_channel/subchannel_index.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/iomgr/combiner.h"
@@ -137,7 +138,7 @@ static grpc_error *initial_metadata_add_lb_token(
 }
 
 static void destroy_client_stats(void *arg) {
-  grpc_grpclb_client_stats_unref(arg);
+  grpc_grpclb_client_stats_unref((grpc_grpclb_client_stats *)arg);
 }
 
 typedef struct wrapped_rr_closure_arg {
@@ -181,7 +182,7 @@ typedef struct wrapped_rr_closure_arg {
  * order to unref the round robin instance upon its invocation */
 static void wrapped_rr_closure(grpc_exec_ctx *exec_ctx, void *arg,
                                grpc_error *error) {
-  wrapped_rr_closure_arg *wc_arg = arg;
+  wrapped_rr_closure_arg *wc_arg = (wrapped_rr_closure_arg *)arg;
 
   GPR_ASSERT(wc_arg->wrapped_closure != NULL);
   GRPC_CLOSURE_SCHED(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error));
@@ -245,7 +246,7 @@ static void add_pending_pick(pending_pick **root,
                              grpc_connected_subchannel **target,
                              grpc_call_context_element *context,
                              grpc_closure *on_complete) {
-  pending_pick *pp = gpr_zalloc(sizeof(*pp));
+  pending_pick *pp = (pending_pick *)gpr_zalloc(sizeof(*pp));
   pp->next = *root;
   pp->pick_args = *pick_args;
   pp->target = target;
@@ -271,7 +272,7 @@ typedef struct pending_ping {
 } pending_ping;
 
 static void add_pending_ping(pending_ping **root, grpc_closure *notify) {
-  pending_ping *pping = gpr_zalloc(sizeof(*pping));
+  pending_ping *pping = (pending_ping *)gpr_zalloc(sizeof(*pping));
   pping->wrapped_notify_arg.wrapped_closure = notify;
   pping->wrapped_notify_arg.free_when_done = pping;
   pping->next = *root;
@@ -285,7 +286,7 @@ static void add_pending_ping(pending_ping **root, grpc_closure *notify) {
  * glb_lb_policy
  */
 typedef struct rr_connectivity_data rr_connectivity_data;
-static const grpc_lb_policy_vtable glb_lb_policy_vtable;
+
 typedef struct glb_lb_policy {
   /** base policy: must be first */
   grpc_lb_policy base;
@@ -671,7 +672,7 @@ static grpc_lb_policy_args *lb_policy_args_create(grpc_exec_ctx *exec_ctx,
   grpc_lb_addresses *addresses =
       process_serverlist_locked(exec_ctx, glb_policy->serverlist);
   GPR_ASSERT(addresses != NULL);
-  grpc_lb_policy_args *args = gpr_zalloc(sizeof(*args));
+  grpc_lb_policy_args *args = (grpc_lb_policy_args *)gpr_zalloc(sizeof(*args));
   args->client_channel_factory = glb_policy->cc_factory;
   args->combiner = glb_policy->base.combiner;
   // Replace the LB addresses in the channel args that we pass down to
@@ -727,7 +728,7 @@ static void create_rr_locked(grpc_exec_ctx *exec_ctx, glb_lb_policy *glb_policy,
   /* Allocate the data for the tracking of the new RR policy's connectivity.
    * It'll be deallocated in glb_rr_connectivity_changed() */
   rr_connectivity_data *rr_connectivity =
-      gpr_zalloc(sizeof(rr_connectivity_data));
+      (rr_connectivity_data *)gpr_zalloc(sizeof(rr_connectivity_data));
   GRPC_CLOSURE_INIT(&rr_connectivity->on_change,
                     glb_rr_connectivity_changed_locked, rr_connectivity,
                     grpc_combiner_scheduler(glb_policy->base.combiner));
@@ -798,7 +799,7 @@ static void rr_handover_locked(grpc_exec_ctx *exec_ctx,
 
 static void glb_rr_connectivity_changed_locked(grpc_exec_ctx *exec_ctx,
                                                void *arg, grpc_error *error) {
-  rr_connectivity_data *rr_connectivity = arg;
+  rr_connectivity_data *rr_connectivity = (rr_connectivity_data *)arg;
   glb_lb_policy *glb_policy = rr_connectivity->glb_policy;
   if (glb_policy->shutting_down) {
     GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
@@ -841,8 +842,8 @@ static grpc_slice_hash_table_entry targets_info_entry_create(
 }
 
 static int balancer_name_cmp_fn(void *a, void *b) {
-  const char *a_str = a;
-  const char *b_str = b;
+  const char *a_str = (const char *)a;
+  const char *b_str = (const char *)b;
   return strcmp(a_str, b_str);
 }
 
@@ -869,7 +870,8 @@ static grpc_channel_args *build_lb_channel_args(
   grpc_lb_addresses *lb_addresses =
       grpc_lb_addresses_create(num_grpclb_addrs, NULL);
   grpc_slice_hash_table_entry *targets_info_entries =
-      gpr_zalloc(sizeof(*targets_info_entries) * num_grpclb_addrs);
+      (grpc_slice_hash_table_entry *)gpr_zalloc(sizeof(*targets_info_entries) *
+                                                num_grpclb_addrs);
 
   size_t lb_addresses_idx = 0;
   for (size_t i = 0; i < addresses->num_addresses; ++i) {
@@ -911,92 +913,6 @@ static grpc_channel_args *build_lb_channel_args(
   return result;
 }
 
-static void glb_lb_channel_on_connectivity_changed_cb(grpc_exec_ctx *exec_ctx,
-                                                      void *arg,
-                                                      grpc_error *error);
-static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
-                                  grpc_lb_policy_factory *factory,
-                                  grpc_lb_policy_args *args) {
-  /* Count the number of gRPC-LB addresses. There must be at least one.
-   * TODO(roth): For now, we ignore non-balancer addresses, but in the
-   * future, we may change the behavior such that we fall back to using
-   * the non-balancer addresses if we cannot reach any balancers. In the
-   * fallback case, we should use the LB policy indicated by
-   * GRPC_ARG_LB_POLICY_NAME (although if that specifies grpclb or is
-   * unset, we should default to pick_first). */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
-  if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
-    return NULL;
-  }
-  grpc_lb_addresses *addresses = arg->value.pointer.p;
-  size_t num_grpclb_addrs = 0;
-  for (size_t i = 0; i < addresses->num_addresses; ++i) {
-    if (addresses->addresses[i].is_balancer) ++num_grpclb_addrs;
-  }
-  if (num_grpclb_addrs == 0) return NULL;
-
-  glb_lb_policy *glb_policy = gpr_zalloc(sizeof(*glb_policy));
-
-  /* Get server name. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
-  GPR_ASSERT(arg != NULL);
-  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
-  grpc_uri *uri = grpc_uri_parse(exec_ctx, arg->value.string, true);
-  GPR_ASSERT(uri->path[0] != '\0');
-  glb_policy->server_name =
-      gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path);
-  if (GRPC_TRACER_ON(grpc_lb_glb_trace)) {
-    gpr_log(GPR_INFO, "Will use '%s' as the server name for LB request.",
-            glb_policy->server_name);
-  }
-  grpc_uri_destroy(uri);
-
-  glb_policy->cc_factory = args->client_channel_factory;
-  GPR_ASSERT(glb_policy->cc_factory != NULL);
-
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_GRPCLB_CALL_TIMEOUT_MS);
-  glb_policy->lb_call_timeout_ms =
-      grpc_channel_arg_get_integer(arg, (grpc_integer_options){0, 0, INT_MAX});
-
-  // Make sure that GRPC_ARG_LB_POLICY_NAME is set in channel args,
-  // since we use this to trigger the client_load_reporting filter.
-  grpc_arg new_arg =
-      grpc_channel_arg_string_create(GRPC_ARG_LB_POLICY_NAME, "grpclb");
-  static const char *args_to_remove[] = {GRPC_ARG_LB_POLICY_NAME};
-  glb_policy->args = grpc_channel_args_copy_and_add_and_remove(
-      args->args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), &new_arg, 1);
-
-  /* Create a client channel over them to communicate with a LB service */
-  glb_policy->response_generator =
-      grpc_fake_resolver_response_generator_create();
-  grpc_channel_args *lb_channel_args = build_lb_channel_args(
-      exec_ctx, addresses, glb_policy->response_generator, args->args);
-  char *uri_str;
-  gpr_asprintf(&uri_str, "fake:///%s", glb_policy->server_name);
-  glb_policy->lb_channel = grpc_lb_policy_grpclb_create_lb_channel(
-      exec_ctx, uri_str, args->client_channel_factory, lb_channel_args);
-
-  /* Propagate initial resolution */
-  grpc_fake_resolver_response_generator_set_response(
-      exec_ctx, glb_policy->response_generator, lb_channel_args);
-  grpc_channel_args_destroy(exec_ctx, lb_channel_args);
-  gpr_free(uri_str);
-  if (glb_policy->lb_channel == NULL) {
-    gpr_free((void *)glb_policy->server_name);
-    grpc_channel_args_destroy(exec_ctx, glb_policy->args);
-    gpr_free(glb_policy);
-    return NULL;
-  }
-  GRPC_CLOSURE_INIT(&glb_policy->lb_channel_on_connectivity_changed,
-                    glb_lb_channel_on_connectivity_changed_cb, glb_policy,
-                    grpc_combiner_scheduler(args->combiner));
-  grpc_lb_policy_init(&glb_policy->base, &glb_lb_policy_vtable, args->combiner);
-  grpc_connectivity_state_init(&glb_policy->state_tracker, GRPC_CHANNEL_IDLE,
-                               "grpclb");
-  return &glb_policy->base;
-}
-
 static void glb_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
   GPR_ASSERT(glb_policy->pending_picks == NULL);
@@ -1011,6 +927,7 @@ static void glb_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
     grpc_grpclb_destroy_serverlist(glb_policy->serverlist);
   }
   grpc_fake_resolver_response_generator_unref(glb_policy->response_generator);
+  grpc_subchannel_index_unref();
   if (glb_policy->pending_update_args != NULL) {
     grpc_channel_args_destroy(exec_ctx, glb_policy->pending_update_args->args);
     gpr_free(glb_policy->pending_update_args);
@@ -1190,7 +1107,8 @@ static int glb_pick_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     }
     GRPC_LB_POLICY_REF(glb_policy->rr_policy, "glb_pick");
 
-    wrapped_rr_closure_arg *wc_arg = gpr_zalloc(sizeof(wrapped_rr_closure_arg));
+    wrapped_rr_closure_arg *wc_arg =
+        (wrapped_rr_closure_arg *)gpr_zalloc(sizeof(wrapped_rr_closure_arg));
 
     GRPC_CLOSURE_INIT(&wc_arg->wrapper_closure, wrapped_rr_closure, wc_arg,
                       grpc_schedule_on_exec_ctx);
@@ -1273,7 +1191,7 @@ static void schedule_next_client_load_report(grpc_exec_ctx *exec_ctx,
 
 static void client_load_report_done_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   grpc_byte_buffer_destroy(glb_policy->client_load_report_payload);
   glb_policy->client_load_report_payload = NULL;
   if (error != GRPC_ERROR_NONE || glb_policy->lb_call == NULL) {
@@ -1302,7 +1220,8 @@ static void do_send_client_load_report_locked(grpc_exec_ctx *exec_ctx,
 
 static bool load_report_counters_are_zero(grpc_grpclb_request *request) {
   grpc_grpclb_dropped_call_counts *drop_entries =
-      request->client_stats.calls_finished_with_drop.arg;
+      (grpc_grpclb_dropped_call_counts *)
+          request->client_stats.calls_finished_with_drop.arg;
   return request->client_stats.num_calls_started == 0 &&
          request->client_stats.num_calls_finished == 0 &&
          request->client_stats.num_calls_finished_with_client_failed_to_send ==
@@ -1313,7 +1232,7 @@ static bool load_report_counters_are_zero(grpc_grpclb_request *request) {
 
 static void send_client_load_report_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   if (error == GRPC_ERROR_CANCELLED || glb_policy->lb_call == NULL) {
     glb_policy->client_load_report_timer_pending = false;
     GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
@@ -1520,7 +1439,7 @@ static void query_for_backends_locked(grpc_exec_ctx *exec_ctx,
 
 static void lb_on_sent_initial_request_locked(grpc_exec_ctx *exec_ctx,
                                               void *arg, grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   glb_policy->initial_request_sent = true;
   // If we attempted to send a client load report before the initial
   // request was sent, send the load report now.
@@ -1533,7 +1452,7 @@ static void lb_on_sent_initial_request_locked(grpc_exec_ctx *exec_ctx,
 
 static void lb_on_response_received_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   grpc_op ops[2];
   memset(ops, 0, sizeof(ops));
   grpc_op *op = ops;
@@ -1544,6 +1463,7 @@ static void lb_on_response_received_locked(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_byte_buffer_reader bbr;
     grpc_byte_buffer_reader_init(&bbr, glb_policy->lb_response_payload);
     grpc_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+    grpc_byte_buffer_reader_destroy(&bbr);
     grpc_byte_buffer_destroy(glb_policy->lb_response_payload);
 
     grpc_grpclb_initial_response *response = NULL;
@@ -1640,6 +1560,9 @@ static void lb_on_response_received_locked(grpc_exec_ctx *exec_ctx, void *arg,
           exec_ctx, glb_policy->lb_call, ops, (size_t)(op - ops),
           &glb_policy->lb_on_response_received); /* loop */
       GPR_ASSERT(GRPC_CALL_OK == call_error);
+    } else {
+      GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
+                                "lb_on_response_received_locked_shutdown");
     }
   } else { /* empty payload: call cancelled. */
            /* dispose of the "lb_on_response_received_locked" weak ref taken in
@@ -1651,7 +1574,7 @@ static void lb_on_response_received_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void lb_call_on_retry_timer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                           grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   glb_policy->retry_timer_active = false;
   if (!glb_policy->shutting_down && error == GRPC_ERROR_NONE) {
     if (GRPC_TRACER_ON(grpc_lb_glb_trace)) {
@@ -1666,7 +1589,7 @@ static void lb_call_on_retry_timer_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void lb_on_server_status_received_locked(grpc_exec_ctx *exec_ctx,
                                                 void *arg, grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   GPR_ASSERT(glb_policy->lb_call != NULL);
   if (GRPC_TRACER_ON(grpc_lb_glb_trace)) {
     char *status_details =
@@ -1729,8 +1652,8 @@ static void glb_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                                 glb_policy->pending_update_args->args);
       gpr_free(glb_policy->pending_update_args);
     }
-    glb_policy->pending_update_args =
-        gpr_zalloc(sizeof(*glb_policy->pending_update_args));
+    glb_policy->pending_update_args = (grpc_lb_policy_args *)gpr_zalloc(
+        sizeof(*glb_policy->pending_update_args));
     glb_policy->pending_update_args->client_channel_factory =
         args->client_channel_factory;
     glb_policy->pending_update_args->args = grpc_channel_args_copy(args->args);
@@ -1758,7 +1681,8 @@ static void glb_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
               (void *)glb_policy);
     }
   }
-  const grpc_lb_addresses *addresses = arg->value.pointer.p;
+  const grpc_lb_addresses *addresses =
+      (const grpc_lb_addresses *)arg->value.pointer.p;
   GPR_ASSERT(glb_policy->lb_channel != NULL);
   grpc_channel_args *lb_channel_args = build_lb_channel_args(
       exec_ctx, addresses, glb_policy->response_generator, args->args);
@@ -1791,7 +1715,7 @@ static void glb_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
 static void glb_lb_channel_on_connectivity_changed_cb(grpc_exec_ctx *exec_ctx,
                                                       void *arg,
                                                       grpc_error *error) {
-  glb_lb_policy *glb_policy = arg;
+  glb_lb_policy *glb_policy = (glb_lb_policy *)arg;
   if (glb_policy->shutting_down) goto done;
   // Re-initialize the lb_call. This should also take care of updating the
   // embedded RR policy. Note that the current RR policy, if any, will stay in
@@ -1862,6 +1786,90 @@ static const grpc_lb_policy_vtable glb_lb_policy_vtable = {
     glb_notify_on_state_change_locked,
     glb_update_locked};
 
+static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
+                                  grpc_lb_policy_factory *factory,
+                                  grpc_lb_policy_args *args) {
+  /* Count the number of gRPC-LB addresses. There must be at least one.
+   * TODO(roth): For now, we ignore non-balancer addresses, but in the
+   * future, we may change the behavior such that we fall back to using
+   * the non-balancer addresses if we cannot reach any balancers. In the
+   * fallback case, we should use the LB policy indicated by
+   * GRPC_ARG_LB_POLICY_NAME (although if that specifies grpclb or is
+   * unset, we should default to pick_first). */
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
+    return NULL;
+  }
+  grpc_lb_addresses *addresses = (grpc_lb_addresses *)arg->value.pointer.p;
+  size_t num_grpclb_addrs = 0;
+  for (size_t i = 0; i < addresses->num_addresses; ++i) {
+    if (addresses->addresses[i].is_balancer) ++num_grpclb_addrs;
+  }
+  if (num_grpclb_addrs == 0) return NULL;
+
+  glb_lb_policy *glb_policy = (glb_lb_policy *)gpr_zalloc(sizeof(*glb_policy));
+
+  /* Get server name. */
+  arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  grpc_uri *uri = grpc_uri_parse(exec_ctx, arg->value.string, true);
+  GPR_ASSERT(uri->path[0] != '\0');
+  glb_policy->server_name =
+      gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path);
+  if (GRPC_TRACER_ON(grpc_lb_glb_trace)) {
+    gpr_log(GPR_INFO, "Will use '%s' as the server name for LB request.",
+            glb_policy->server_name);
+  }
+  grpc_uri_destroy(uri);
+
+  glb_policy->cc_factory = args->client_channel_factory;
+  GPR_ASSERT(glb_policy->cc_factory != NULL);
+
+  arg = grpc_channel_args_find(args->args, GRPC_ARG_GRPCLB_CALL_TIMEOUT_MS);
+  glb_policy->lb_call_timeout_ms =
+      grpc_channel_arg_get_integer(arg, (grpc_integer_options){0, 0, INT_MAX});
+
+  // Make sure that GRPC_ARG_LB_POLICY_NAME is set in channel args,
+  // since we use this to trigger the client_load_reporting filter.
+  grpc_arg new_arg = grpc_channel_arg_string_create(
+      (char *)GRPC_ARG_LB_POLICY_NAME, (char *)"grpclb");
+  static const char *args_to_remove[] = {GRPC_ARG_LB_POLICY_NAME};
+  glb_policy->args = grpc_channel_args_copy_and_add_and_remove(
+      args->args, args_to_remove, GPR_ARRAY_SIZE(args_to_remove), &new_arg, 1);
+
+  /* Create a client channel over them to communicate with a LB service */
+  glb_policy->response_generator =
+      grpc_fake_resolver_response_generator_create();
+  grpc_channel_args *lb_channel_args = build_lb_channel_args(
+      exec_ctx, addresses, glb_policy->response_generator, args->args);
+  char *uri_str;
+  gpr_asprintf(&uri_str, "fake:///%s", glb_policy->server_name);
+  glb_policy->lb_channel = grpc_lb_policy_grpclb_create_lb_channel(
+      exec_ctx, uri_str, args->client_channel_factory, lb_channel_args);
+
+  /* Propagate initial resolution */
+  grpc_fake_resolver_response_generator_set_response(
+      exec_ctx, glb_policy->response_generator, lb_channel_args);
+  grpc_channel_args_destroy(exec_ctx, lb_channel_args);
+  gpr_free(uri_str);
+  if (glb_policy->lb_channel == NULL) {
+    gpr_free((void *)glb_policy->server_name);
+    grpc_channel_args_destroy(exec_ctx, glb_policy->args);
+    gpr_free(glb_policy);
+    return NULL;
+  }
+  grpc_subchannel_index_ref();
+  GRPC_CLOSURE_INIT(&glb_policy->lb_channel_on_connectivity_changed,
+                    glb_lb_channel_on_connectivity_changed_cb, glb_policy,
+                    grpc_combiner_scheduler(args->combiner));
+  grpc_lb_policy_init(&glb_policy->base, &glb_lb_policy_vtable, args->combiner);
+  grpc_connectivity_state_init(&glb_policy->state_tracker, GRPC_CHANNEL_IDLE,
+                               "grpclb");
+  return &glb_policy->base;
+}
+
 static void glb_factory_ref(grpc_lb_policy_factory *factory) {}
 
 static void glb_factory_unref(grpc_lb_policy_factory *factory) {}
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.c
index 5b62623145..903120ca7d 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.c
@@ -42,7 +42,8 @@ struct grpc_grpclb_client_stats {
 };
 
 grpc_grpclb_client_stats* grpc_grpclb_client_stats_create() {
-  grpc_grpclb_client_stats* client_stats = gpr_zalloc(sizeof(*client_stats));
+  grpc_grpclb_client_stats* client_stats =
+      (grpc_grpclb_client_stats*)gpr_zalloc(sizeof(*client_stats));
   gpr_ref_init(&client_stats->refs, 1);
   return client_stats;
 }
@@ -88,7 +89,8 @@ void grpc_grpclb_client_stats_add_call_dropped_locked(
   // Record the drop.
   if (client_stats->drop_token_counts == NULL) {
     client_stats->drop_token_counts =
-        gpr_zalloc(sizeof(grpc_grpclb_dropped_call_counts));
+        (grpc_grpclb_dropped_call_counts*)gpr_zalloc(
+            sizeof(grpc_grpclb_dropped_call_counts));
   }
   grpc_grpclb_dropped_call_counts* drop_token_counts =
       client_stats->drop_token_counts;
@@ -103,9 +105,9 @@ void grpc_grpclb_client_stats_add_call_dropped_locked(
   while (new_num_entries < drop_token_counts->num_entries + 1) {
     new_num_entries *= 2;
   }
-  drop_token_counts->token_counts =
-      gpr_realloc(drop_token_counts->token_counts,
-                  new_num_entries * sizeof(grpc_grpclb_drop_token_count));
+  drop_token_counts->token_counts = (grpc_grpclb_drop_token_count*)gpr_realloc(
+      drop_token_counts->token_counts,
+      new_num_entries * sizeof(grpc_grpclb_drop_token_count));
   grpc_grpclb_drop_token_count* new_entry =
       &drop_token_counts->token_counts[drop_token_counts->num_entries++];
   new_entry->token = gpr_strdup(token);
diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.c b/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.c
index 6fa29f326e..8ef6dfc6f4 100644
--- a/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.c
+++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.c
@@ -25,7 +25,7 @@
 /* invoked once for every Server in ServerList */
 static bool count_serverlist(pb_istream_t *stream, const pb_field_t *field,
                              void **arg) {
-  grpc_grpclb_serverlist *sl = *arg;
+  grpc_grpclb_serverlist *sl = (grpc_grpclb_serverlist *)*arg;
   grpc_grpclb_server server;
   if (!pb_decode(stream, grpc_lb_v1_Server_fields, &server)) {
     gpr_log(GPR_ERROR, "nanopb error: %s", PB_GET_ERROR(stream));
@@ -46,9 +46,10 @@ typedef struct decode_serverlist_arg {
 /* invoked once for every Server in ServerList */
 static bool decode_serverlist(pb_istream_t *stream, const pb_field_t *field,
                               void **arg) {
-  decode_serverlist_arg *dec_arg = *arg;
+  decode_serverlist_arg *dec_arg = (decode_serverlist_arg *)*arg;
   GPR_ASSERT(dec_arg->serverlist->num_servers >= dec_arg->decoding_idx);
-  grpc_grpclb_server *server = gpr_zalloc(sizeof(grpc_grpclb_server));
+  grpc_grpclb_server *server =
+      (grpc_grpclb_server *)gpr_zalloc(sizeof(grpc_grpclb_server));
   if (!pb_decode(stream, grpc_lb_v1_Server_fields, server)) {
     gpr_free(server);
     gpr_log(GPR_ERROR, "nanopb error: %s", PB_GET_ERROR(stream));
@@ -59,7 +60,8 @@ static bool decode_serverlist(pb_istream_t *stream, const pb_field_t *field,
 }
 
 grpc_grpclb_request *grpc_grpclb_request_create(const char *lb_service_name) {
-  grpc_grpclb_request *req = gpr_malloc(sizeof(grpc_grpclb_request));
+  grpc_grpclb_request *req =
+      (grpc_grpclb_request *)gpr_malloc(sizeof(grpc_grpclb_request));
   req->has_client_stats = false;
   req->has_initial_request = true;
   req->initial_request.has_name = true;
@@ -78,14 +80,15 @@ static void populate_timestamp(gpr_timespec timestamp,
 
 static bool encode_string(pb_ostream_t *stream, const pb_field_t *field,
                           void *const *arg) {
-  char *str = *arg;
+  char *str = (char *)*arg;
   if (!pb_encode_tag_for_field(stream, field)) return false;
   return pb_encode_string(stream, (uint8_t *)str, strlen(str));
 }
 
 static bool encode_drops(pb_ostream_t *stream, const pb_field_t *field,
                          void *const *arg) {
-  grpc_grpclb_dropped_call_counts *drop_entries = *arg;
+  grpc_grpclb_dropped_call_counts *drop_entries =
+      (grpc_grpclb_dropped_call_counts *)*arg;
   if (drop_entries == NULL) return true;
   for (size_t i = 0; i < drop_entries->num_entries; ++i) {
     if (!pb_encode_tag_for_field(stream, field)) return false;
@@ -104,7 +107,8 @@ static bool encode_drops(pb_ostream_t *stream, const pb_field_t *field,
 
 grpc_grpclb_request *grpc_grpclb_load_report_request_create_locked(
     grpc_grpclb_client_stats *client_stats) {
-  grpc_grpclb_request *req = gpr_zalloc(sizeof(grpc_grpclb_request));
+  grpc_grpclb_request *req =
+      (grpc_grpclb_request *)gpr_zalloc(sizeof(grpc_grpclb_request));
   req->has_client_stats = true;
   req->client_stats.has_timestamp = true;
   populate_timestamp(gpr_now(GPR_CLOCK_REALTIME), &req->client_stats.timestamp);
@@ -144,7 +148,8 @@ grpc_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request) {
 void grpc_grpclb_request_destroy(grpc_grpclb_request *request) {
   if (request->has_client_stats) {
     grpc_grpclb_dropped_call_counts *drop_entries =
-        request->client_stats.calls_finished_with_drop.arg;
+        (grpc_grpclb_dropped_call_counts *)
+            request->client_stats.calls_finished_with_drop.arg;
     grpc_grpclb_dropped_call_counts_destroy(drop_entries);
   }
   gpr_free(request);
@@ -166,7 +171,8 @@ grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
   if (!res.has_initial_response) return NULL;
 
   grpc_grpclb_initial_response *initial_res =
-      gpr_malloc(sizeof(grpc_grpclb_initial_response));
+      (grpc_grpclb_initial_response *)gpr_malloc(
+          sizeof(grpc_grpclb_initial_response));
   memcpy(initial_res, &res.initial_response,
          sizeof(grpc_grpclb_initial_response));
 
@@ -179,7 +185,8 @@ grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
       pb_istream_from_buffer(GRPC_SLICE_START_PTR(encoded_grpc_grpclb_response),
                              GRPC_SLICE_LENGTH(encoded_grpc_grpclb_response));
   pb_istream_t stream_at_start = stream;
-  grpc_grpclb_serverlist *sl = gpr_zalloc(sizeof(grpc_grpclb_serverlist));
+  grpc_grpclb_serverlist *sl =
+      (grpc_grpclb_serverlist *)gpr_zalloc(sizeof(grpc_grpclb_serverlist));
   grpc_grpclb_response res;
   memset(&res, 0, sizeof(grpc_grpclb_response));
   // First pass: count number of servers.
@@ -193,7 +200,8 @@ grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
   }
   // Second pass: populate servers.
   if (sl->num_servers > 0) {
-    sl->servers = gpr_zalloc(sizeof(grpc_grpclb_server *) * sl->num_servers);
+    sl->servers = (grpc_grpclb_server **)gpr_zalloc(
+        sizeof(grpc_grpclb_server *) * sl->num_servers);
     decode_serverlist_arg decode_arg;
     memset(&decode_arg, 0, sizeof(decode_arg));
     decode_arg.serverlist = sl;
@@ -226,13 +234,16 @@ void grpc_grpclb_destroy_serverlist(grpc_grpclb_serverlist *serverlist) {
 
 grpc_grpclb_serverlist *grpc_grpclb_serverlist_copy(
     const grpc_grpclb_serverlist *sl) {
-  grpc_grpclb_serverlist *copy = gpr_zalloc(sizeof(grpc_grpclb_serverlist));
+  grpc_grpclb_serverlist *copy =
+      (grpc_grpclb_serverlist *)gpr_zalloc(sizeof(grpc_grpclb_serverlist));
   copy->num_servers = sl->num_servers;
   memcpy(&copy->expiration_interval, &sl->expiration_interval,
          sizeof(grpc_grpclb_duration));
-  copy->servers = gpr_malloc(sizeof(grpc_grpclb_server *) * sl->num_servers);
+  copy->servers = (grpc_grpclb_server **)gpr_malloc(
+      sizeof(grpc_grpclb_server *) * sl->num_servers);
   for (size_t i = 0; i < sl->num_servers; i++) {
-    copy->servers[i] = gpr_malloc(sizeof(grpc_grpclb_server));
+    copy->servers[i] =
+        (grpc_grpclb_server *)gpr_malloc(sizeof(grpc_grpclb_server));
     memcpy(copy->servers[i], sl->servers[i], sizeof(grpc_grpclb_server));
   }
   return copy;
diff --git a/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c b/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c
index fd0fb41fb9..d20cbb8388 100644
--- a/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c
+++ b/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c
@@ -89,6 +89,7 @@ static void pf_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
                                     "picked_first_destroy");
   }
   grpc_connectivity_state_destroy(exec_ctx, &p->state_tracker);
+  grpc_subchannel_index_unref();
   if (p->pending_update_args != NULL) {
     grpc_channel_args_destroy(exec_ctx, p->pending_update_args->args);
     gpr_free(p->pending_update_args);
@@ -217,7 +218,7 @@ static int pf_pick_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   if (!p->started_picking) {
     start_picking_locked(exec_ctx, p);
   }
-  pp = gpr_malloc(sizeof(*pp));
+  pp = (pending_pick *)gpr_malloc(sizeof(*pp));
   pp->next = p->pending_picks;
   pp->target = target;
   pp->initial_metadata_flags = pick_args->initial_metadata_flags;
@@ -296,8 +297,6 @@ static void stop_connectivity_watchers(grpc_exec_ctx *exec_ctx,
 static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                              const grpc_lb_policy_args *args) {
   pick_first_lb_policy *p = (pick_first_lb_policy *)policy;
-  /* Find the number of backend addresses. We ignore balancer
-   * addresses, since we don't know how to handle them. */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
@@ -316,12 +315,9 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
     }
     return;
   }
-  const grpc_lb_addresses *addresses = arg->value.pointer.p;
-  size_t num_addrs = 0;
-  for (size_t i = 0; i < addresses->num_addresses; i++) {
-    if (!addresses->addresses[i].is_balancer) ++num_addrs;
-  }
-  if (num_addrs == 0) {
+  const grpc_lb_addresses *addresses =
+      (const grpc_lb_addresses *)arg->value.pointer.p;
+  if (addresses->num_addresses == 0) {
     // Empty update. Unsubscribe from all current subchannels and put the
     // channel in TRANSIENT_FAILURE.
     grpc_connectivity_state_set(
@@ -333,9 +329,10 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
   }
   if (GRPC_TRACER_ON(grpc_lb_pick_first_trace)) {
     gpr_log(GPR_INFO, "Pick First %p received update with %lu addresses",
-            (void *)p, (unsigned long)num_addrs);
+            (void *)p, (unsigned long)addresses->num_addresses);
   }
-  grpc_subchannel_args *sc_args = gpr_zalloc(sizeof(*sc_args) * num_addrs);
+  grpc_subchannel_args *sc_args = (grpc_subchannel_args *)gpr_zalloc(
+      sizeof(*sc_args) * addresses->num_addresses);
   /* We remove the following keys in order for subchannel keys belonging to
    * subchannels point to the same address to match. */
   static const char *keys_to_remove[] = {GRPC_ARG_SUBCHANNEL_ADDRESS,
@@ -344,7 +341,8 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
 
   /* Create list of subchannel args for new addresses in \a args. */
   for (size_t i = 0; i < addresses->num_addresses; i++) {
-    if (addresses->addresses[i].is_balancer) continue;
+    // If there were any balancer, we would have chosen grpclb policy instead.
+    GPR_ASSERT(!addresses->addresses[i].is_balancer);
     if (addresses->addresses[i].user_data != NULL) {
       gpr_log(GPR_ERROR,
               "This LB policy doesn't support user data. It will be ignored");
@@ -396,7 +394,8 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
       grpc_channel_args_destroy(exec_ctx, p->pending_update_args->args);
       gpr_free(p->pending_update_args);
     }
-    p->pending_update_args = gpr_zalloc(sizeof(*p->pending_update_args));
+    p->pending_update_args =
+        (grpc_lb_policy_args *)gpr_zalloc(sizeof(*p->pending_update_args));
     p->pending_update_args->client_channel_factory =
         args->client_channel_factory;
     p->pending_update_args->args = grpc_channel_args_copy(args->args);
@@ -405,7 +404,7 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
   }
   /* Create the subchannels for the new subchannel args/addresses. */
   grpc_subchannel **new_subchannels =
-      gpr_zalloc(sizeof(*new_subchannels) * sc_args_count);
+      (grpc_subchannel **)gpr_zalloc(sizeof(*new_subchannels) * sc_args_count);
   size_t num_new_subchannels = 0;
   for (size_t i = 0; i < sc_args_count; i++) {
     grpc_subchannel *subchannel = grpc_client_channel_factory_create_subchannel(
@@ -460,7 +459,7 @@ static void pf_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
 
 static void pf_connectivity_changed_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  pick_first_lb_policy *p = arg;
+  pick_first_lb_policy *p = (pick_first_lb_policy *)arg;
   grpc_subchannel *selected_subchannel;
   pending_pick *pp;
 
@@ -682,12 +681,13 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
                                          grpc_lb_policy_factory *factory,
                                          grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
-  pick_first_lb_policy *p = gpr_zalloc(sizeof(*p));
+  pick_first_lb_policy *p = (pick_first_lb_policy *)gpr_zalloc(sizeof(*p));
   if (GRPC_TRACER_ON(grpc_lb_pick_first_trace)) {
     gpr_log(GPR_DEBUG, "Pick First %p created.", (void *)p);
   }
   pf_update_locked(exec_ctx, &p->base, args);
   grpc_lb_policy_init(&p->base, &pick_first_lb_policy_vtable, args->combiner);
+  grpc_subchannel_index_ref();
   GRPC_CLOSURE_INIT(&p->connectivity_changed, pf_connectivity_changed_locked, p,
                     grpc_combiner_scheduler(args->combiner));
   return &p->base;
diff --git a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c
index a7f7e9542c..a3a62e9f3c 100644
--- a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c
+++ b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c
@@ -30,6 +30,7 @@
 
 #include "src/core/ext/filters/client_channel/lb_policy_registry.h"
 #include "src/core/ext/filters/client_channel/subchannel.h"
+#include "src/core/ext/filters/client_channel/subchannel_index.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/iomgr/combiner.h"
@@ -74,9 +75,6 @@ typedef struct round_robin_lb_policy {
   bool started_picking;
   /** are we shutting down? */
   bool shutdown;
-  /** has the policy gotten into the GRPC_CHANNEL_SHUTDOWN? No picks can be
-   * service after this point, the policy will never transition out. */
-  bool in_connectivity_shutdown;
   /** List of picks that are waiting on connectivity */
   pending_pick *pending_picks;
 
@@ -147,10 +145,11 @@ struct rr_subchannel_list {
 
 static rr_subchannel_list *rr_subchannel_list_create(round_robin_lb_policy *p,
                                                      size_t num_subchannels) {
-  rr_subchannel_list *subchannel_list = gpr_zalloc(sizeof(*subchannel_list));
+  rr_subchannel_list *subchannel_list =
+      (rr_subchannel_list *)gpr_zalloc(sizeof(*subchannel_list));
   subchannel_list->policy = p;
   subchannel_list->subchannels =
-      gpr_zalloc(sizeof(subchannel_data) * num_subchannels);
+      (subchannel_data *)gpr_zalloc(sizeof(subchannel_data) * num_subchannels);
   subchannel_list->num_subchannels = num_subchannels;
   gpr_ref_init(&subchannel_list->refcount, 1);
   if (GRPC_TRACER_ON(grpc_lb_round_robin_trace)) {
@@ -312,6 +311,7 @@ static void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
             (void *)pol, (void *)pol);
   }
   grpc_connectivity_state_destroy(exec_ctx, &p->state_tracker);
+  grpc_subchannel_index_unref();
   gpr_free(p);
 }
 
@@ -424,7 +424,6 @@ static int rr_pick_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
                           grpc_closure *on_complete) {
   round_robin_lb_policy *p = (round_robin_lb_policy *)pol;
   GPR_ASSERT(!p->shutdown);
-  GPR_ASSERT(!p->in_connectivity_shutdown);
   if (GRPC_TRACER_ON(grpc_lb_round_robin_trace)) {
     gpr_log(GPR_INFO, "[RR %p] Trying to pick", (void *)pol);
   }
@@ -456,7 +455,7 @@ static int rr_pick_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   if (!p->started_picking) {
     start_picking_locked(exec_ctx, p);
   }
-  pending_pick *pp = gpr_malloc(sizeof(*pp));
+  pending_pick *pp = (pending_pick *)gpr_malloc(sizeof(*pp));
   pp->next = p->pending_picks;
   pp->target = target;
   pp->on_complete = on_complete;
@@ -537,7 +536,7 @@ static grpc_connectivity_state update_lb_connectivity_status_locked(
     grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
                                 GRPC_CHANNEL_SHUTDOWN, GRPC_ERROR_REF(error),
                                 "rr_shutdown");
-    p->in_connectivity_shutdown = true;
+    p->shutdown = true;
     new_state = GRPC_CHANNEL_SHUTDOWN;
   } else if (subchannel_list->num_transient_failures ==
              p->subchannel_list->num_subchannels) { /* 4) TRANSIENT_FAILURE */
@@ -557,7 +556,7 @@ static grpc_connectivity_state update_lb_connectivity_status_locked(
 
 static void rr_connectivity_changed_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  subchannel_data *sd = arg;
+  subchannel_data *sd = (subchannel_data *)arg;
   round_robin_lb_policy *p = sd->subchannel_list->policy;
   if (GRPC_TRACER_ON(grpc_lb_round_robin_trace)) {
     gpr_log(
@@ -590,7 +589,7 @@ static void rr_connectivity_changed_locked(grpc_exec_ctx *exec_ctx, void *arg,
   // Dispose of outdated subchannel lists.
   if (sd->subchannel_list != p->subchannel_list &&
       sd->subchannel_list != p->latest_pending_subchannel_list) {
-    char *reason = NULL;
+    const char *reason = NULL;
     if (sd->subchannel_list->shutting_down) {
       reason = "sl_outdated_straggler";
       rr_subchannel_list_unref(exec_ctx, sd->subchannel_list, reason);
@@ -741,8 +740,6 @@ static void rr_ping_one_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
 static void rr_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                              const grpc_lb_policy_args *args) {
   round_robin_lb_policy *p = (round_robin_lb_policy *)policy;
-  /* Find the number of backend addresses. We ignore balancer addresses, since
-   * we don't know how to handle them. */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
@@ -760,13 +757,10 @@ static void rr_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
     }
     return;
   }
-  grpc_lb_addresses *addresses = arg->value.pointer.p;
-  size_t num_addrs = 0;
-  for (size_t i = 0; i < addresses->num_addresses; i++) {
-    if (!addresses->addresses[i].is_balancer) ++num_addrs;
-  }
-  rr_subchannel_list *subchannel_list = rr_subchannel_list_create(p, num_addrs);
-  if (num_addrs == 0) {
+  grpc_lb_addresses *addresses = (grpc_lb_addresses *)arg->value.pointer.p;
+  rr_subchannel_list *subchannel_list =
+      rr_subchannel_list_create(p, addresses->num_addresses);
+  if (addresses->num_addresses == 0) {
     grpc_connectivity_state_set(
         exec_ctx, &p->state_tracker, GRPC_CHANNEL_TRANSIENT_FAILURE,
         GRPC_ERROR_CREATE_FROM_STATIC_STRING("Empty update"),
@@ -798,9 +792,8 @@ static void rr_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                                          GRPC_ARG_LB_ADDRESSES};
   /* Create subchannels for addresses in the update. */
   for (size_t i = 0; i < addresses->num_addresses; i++) {
-    /* Skip balancer addresses, since we only know how to handle backends. */
-    if (addresses->addresses[i].is_balancer) continue;
-    GPR_ASSERT(i < num_addrs);
+    // If there were any balancer, we would have chosen grpclb policy instead.
+    GPR_ASSERT(!addresses->addresses[i].is_balancer);
     memset(&sc_args, 0, sizeof(grpc_subchannel_args));
     grpc_arg addr_arg =
         grpc_create_subchannel_address_arg(&addresses->addresses[i].address);
@@ -811,19 +804,30 @@ static void rr_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
     sc_args.args = new_args;
     grpc_subchannel *subchannel = grpc_client_channel_factory_create_subchannel(
         exec_ctx, args->client_channel_factory, &sc_args);
+    grpc_channel_args_destroy(exec_ctx, new_args);
+    grpc_error *error;
+    // Get the connectivity state of the subchannel. Already existing ones may
+    // be in a state other than INIT.
+    const grpc_connectivity_state subchannel_connectivity_state =
+        grpc_subchannel_check_connectivity(subchannel, &error);
+    if (error != GRPC_ERROR_NONE) {
+      // The subchannel is in error (e.g. shutting down). Ignore it.
+      GRPC_SUBCHANNEL_UNREF(exec_ctx, subchannel, "new_sc_connectivity_error");
+      GRPC_ERROR_UNREF(error);
+      continue;
+    }
     if (GRPC_TRACER_ON(grpc_lb_round_robin_trace)) {
       char *address_uri =
           grpc_sockaddr_to_uri(&addresses->addresses[i].address);
       gpr_log(
           GPR_DEBUG,
           "[RR %p] index %lu: Created subchannel %p for address uri %s into "
-          "subchannel_list %p",
+          "subchannel_list %p. Connectivity state %s",
           (void *)p, (unsigned long)subchannel_index, (void *)subchannel,
-          address_uri, (void *)subchannel_list);
+          address_uri, (void *)subchannel_list,
+          grpc_connectivity_state_name(subchannel_connectivity_state));
       gpr_free(address_uri);
     }
-    grpc_channel_args_destroy(exec_ctx, new_args);
-
     subchannel_data *sd = &subchannel_list->subchannels[subchannel_index++];
     sd->subchannel_list = subchannel_list;
     sd->subchannel = subchannel;
@@ -835,7 +839,7 @@ static void rr_update_locked(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
      * won't be referring to this value again and it'll be overwritten after
      * the first call to rr_connectivity_changed_locked */
     sd->prev_connectivity_state = GRPC_CHANNEL_INIT;
-    sd->curr_connectivity_state = GRPC_CHANNEL_IDLE;
+    sd->curr_connectivity_state = subchannel_connectivity_state;
     sd->user_data_vtable = addresses->user_data_vtable;
     if (sd->user_data_vtable != NULL) {
       sd->user_data =
@@ -886,8 +890,9 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
                                           grpc_lb_policy_factory *factory,
                                           grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
-  round_robin_lb_policy *p = gpr_zalloc(sizeof(*p));
+  round_robin_lb_policy *p = (round_robin_lb_policy *)gpr_zalloc(sizeof(*p));
   grpc_lb_policy_init(&p->base, &round_robin_lb_policy_vtable, args->combiner);
+  grpc_subchannel_index_ref();
   grpc_connectivity_state_init(&p->state_tracker, GRPC_CHANNEL_IDLE,
                                "round_robin");
   rr_update_locked(exec_ctx, &p->base, args);
diff --git a/src/core/ext/filters/client_channel/lb_policy_factory.c b/src/core/ext/filters/client_channel/lb_policy_factory.c
index 538d8d65ed..4d1405454c 100644
--- a/src/core/ext/filters/client_channel/lb_policy_factory.c
+++ b/src/core/ext/filters/client_channel/lb_policy_factory.c
@@ -28,11 +28,12 @@
 
 grpc_lb_addresses* grpc_lb_addresses_create(
     size_t num_addresses, const grpc_lb_user_data_vtable* user_data_vtable) {
-  grpc_lb_addresses* addresses = gpr_zalloc(sizeof(grpc_lb_addresses));
+  grpc_lb_addresses* addresses =
+      (grpc_lb_addresses*)gpr_zalloc(sizeof(grpc_lb_addresses));
   addresses->num_addresses = num_addresses;
   addresses->user_data_vtable = user_data_vtable;
   const size_t addresses_size = sizeof(grpc_lb_address) * num_addresses;
-  addresses->addresses = gpr_zalloc(addresses_size);
+  addresses->addresses = (grpc_lb_address*)gpr_zalloc(addresses_size);
   return addresses;
 }
 
@@ -125,13 +126,14 @@ void grpc_lb_addresses_destroy(grpc_exec_ctx* exec_ctx,
 }
 
 static void* lb_addresses_copy(void* addresses) {
-  return grpc_lb_addresses_copy(addresses);
+  return grpc_lb_addresses_copy((grpc_lb_addresses*)addresses);
 }
 static void lb_addresses_destroy(grpc_exec_ctx* exec_ctx, void* addresses) {
-  grpc_lb_addresses_destroy(exec_ctx, addresses);
+  grpc_lb_addresses_destroy(exec_ctx, (grpc_lb_addresses*)addresses);
 }
 static int lb_addresses_cmp(void* addresses1, void* addresses2) {
-  return grpc_lb_addresses_cmp(addresses1, addresses2);
+  return grpc_lb_addresses_cmp((grpc_lb_addresses*)addresses1,
+                               (grpc_lb_addresses*)addresses2);
 }
 static const grpc_arg_pointer_vtable lb_addresses_arg_vtable = {
     lb_addresses_copy, lb_addresses_destroy, lb_addresses_cmp};
@@ -139,7 +141,7 @@ static const grpc_arg_pointer_vtable lb_addresses_arg_vtable = {
 grpc_arg grpc_lb_addresses_create_channel_arg(
     const grpc_lb_addresses* addresses) {
   return grpc_channel_arg_pointer_create(
-      GRPC_ARG_LB_ADDRESSES, (void*)addresses, &lb_addresses_arg_vtable);
+      (char*)GRPC_ARG_LB_ADDRESSES, (void*)addresses, &lb_addresses_arg_vtable);
 }
 
 grpc_lb_addresses* grpc_lb_addresses_find_channel_arg(
@@ -148,7 +150,7 @@ grpc_lb_addresses* grpc_lb_addresses_find_channel_arg(
       grpc_channel_args_find(channel_args, GRPC_ARG_LB_ADDRESSES);
   if (lb_addresses_arg == NULL || lb_addresses_arg->type != GRPC_ARG_POINTER)
     return NULL;
-  return lb_addresses_arg->value.pointer.p;
+  return (grpc_lb_addresses*)lb_addresses_arg->value.pointer.p;
 }
 
 void grpc_lb_policy_factory_ref(grpc_lb_policy_factory* factory) {
diff --git a/src/core/ext/filters/client_channel/proxy_mapper_registry.c b/src/core/ext/filters/client_channel/proxy_mapper_registry.c
index 5f43a0596a..09967eea3c 100644
--- a/src/core/ext/filters/client_channel/proxy_mapper_registry.c
+++ b/src/core/ext/filters/client_channel/proxy_mapper_registry.c
@@ -34,7 +34,7 @@ typedef struct {
 static void grpc_proxy_mapper_list_register(grpc_proxy_mapper_list* list,
                                             bool at_start,
                                             grpc_proxy_mapper* mapper) {
-  list->list = gpr_realloc(
+  list->list = (grpc_proxy_mapper**)gpr_realloc(
       list->list, (list->num_mappers + 1) * sizeof(grpc_proxy_mapper*));
   if (at_start) {
     memmove(list->list + 1, list->list,
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
index f1480bb1ae..9bb229ad95 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
@@ -144,7 +144,7 @@ static void dns_ares_channel_saw_error_locked(grpc_exec_ctx *exec_ctx,
 
 static void dns_ares_on_retry_timer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  ares_dns_resolver *r = arg;
+  ares_dns_resolver *r = (ares_dns_resolver *)arg;
   r->have_retry_timer = false;
   if (error == GRPC_ERROR_NONE) {
     if (!r->resolving) {
@@ -204,7 +204,7 @@ static char *choose_service_config(char *service_config_choice_json) {
         int random_pct = rand() % 100;
         int percentage;
         if (sscanf(field->value, "%d", &percentage) != 1 ||
-            random_pct > percentage) {
+            random_pct > percentage || percentage == 0) {
           service_config_json = NULL;
           break;
         }
@@ -227,7 +227,7 @@ static char *choose_service_config(char *service_config_choice_json) {
 
 static void dns_ares_on_resolved_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                         grpc_error *error) {
-  ares_dns_resolver *r = arg;
+  ares_dns_resolver *r = (ares_dns_resolver *)arg;
   grpc_channel_args *result = NULL;
   GPR_ASSERT(r->resolving);
   r->resolving = false;
@@ -249,7 +249,7 @@ static void dns_ares_on_resolved_locked(grpc_exec_ctx *exec_ctx, void *arg,
                 service_config_string);
         args_to_remove[num_args_to_remove++] = GRPC_ARG_SERVICE_CONFIG;
         new_args[num_args_to_add++] = grpc_channel_arg_string_create(
-            GRPC_ARG_SERVICE_CONFIG, service_config_string);
+            (char *)GRPC_ARG_SERVICE_CONFIG, service_config_string);
         service_config = grpc_service_config_create(service_config_string);
         if (service_config != NULL) {
           const char *lb_policy_name =
@@ -257,7 +257,7 @@ static void dns_ares_on_resolved_locked(grpc_exec_ctx *exec_ctx, void *arg,
           if (lb_policy_name != NULL) {
             args_to_remove[num_args_to_remove++] = GRPC_ARG_LB_POLICY_NAME;
             new_args[num_args_to_add++] = grpc_channel_arg_string_create(
-                GRPC_ARG_LB_POLICY_NAME, (char *)lb_policy_name);
+                (char *)GRPC_ARG_LB_POLICY_NAME, (char *)lb_policy_name);
           }
         }
       }
@@ -363,7 +363,8 @@ static grpc_resolver *dns_ares_create(grpc_exec_ctx *exec_ctx,
   const char *path = args->uri->path;
   if (path[0] == '/') ++path;
   /* Create resolver. */
-  ares_dns_resolver *r = gpr_zalloc(sizeof(ares_dns_resolver));
+  ares_dns_resolver *r =
+      (ares_dns_resolver *)gpr_zalloc(sizeof(ares_dns_resolver));
   grpc_resolver_init(&r->base, &dns_ares_resolver_vtable, args->combiner);
   if (0 != strcmp(args->uri->authority, "")) {
     r->dns_server = gpr_strdup(args->uri->authority);
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
index b696344eab..c30cc93b6f 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
@@ -20,6 +20,7 @@
 #if GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET)
 
 #include <ares.h>
+#include <sys/ioctl.h>
 
 #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
 
@@ -37,8 +38,6 @@
 typedef struct fd_node {
   /** the owner of this fd node */
   grpc_ares_ev_driver *ev_driver;
-  /** the grpc_fd owned by this fd node */
-  grpc_fd *grpc_fd;
   /** a closure wrapping on_readable_cb, which should be invoked when the
       grpc_fd in this node becomes readable. */
   grpc_closure read_closure;
@@ -50,10 +49,14 @@ typedef struct fd_node {
 
   /** mutex guarding the rest of the state */
   gpr_mu mu;
+  /** the grpc_fd owned by this fd node */
+  grpc_fd *fd;
   /** if the readable closure has been registered */
   bool readable_registered;
   /** if the writable closure has been registered */
   bool writable_registered;
+  /** if the fd is being shut down */
+  bool shutting_down;
 } fd_node;
 
 struct grpc_ares_ev_driver {
@@ -96,22 +99,34 @@ static void grpc_ares_ev_driver_unref(grpc_ares_ev_driver *ev_driver) {
 }
 
 static void fd_node_destroy(grpc_exec_ctx *exec_ctx, fd_node *fdn) {
-  gpr_log(GPR_DEBUG, "delete fd: %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  gpr_log(GPR_DEBUG, "delete fd: %d", grpc_fd_wrapped_fd(fdn->fd));
   GPR_ASSERT(!fdn->readable_registered);
   GPR_ASSERT(!fdn->writable_registered);
   gpr_mu_destroy(&fdn->mu);
-  grpc_pollset_set_del_fd(exec_ctx, fdn->ev_driver->pollset_set, fdn->grpc_fd);
   /* c-ares library has closed the fd inside grpc_fd. This fd may be picked up
      immediately by another thread, and should not be closed by the following
      grpc_fd_orphan. */
-  grpc_fd_orphan(exec_ctx, fdn->grpc_fd, NULL, NULL, true /* already_closed */,
+  grpc_fd_orphan(exec_ctx, fdn->fd, NULL, NULL, true /* already_closed */,
                  "c-ares query finished");
   gpr_free(fdn);
 }
 
+static void fd_node_shutdown(grpc_exec_ctx *exec_ctx, fd_node *fdn) {
+  gpr_mu_lock(&fdn->mu);
+  fdn->shutting_down = true;
+  if (!fdn->readable_registered && !fdn->writable_registered) {
+    gpr_mu_unlock(&fdn->mu);
+    fd_node_destroy(exec_ctx, fdn);
+  } else {
+    grpc_fd_shutdown(exec_ctx, fdn->fd, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                            "c-ares fd shutdown"));
+    gpr_mu_unlock(&fdn->mu);
+  }
+}
+
 grpc_error *grpc_ares_ev_driver_create(grpc_ares_ev_driver **ev_driver,
                                        grpc_pollset_set *pollset_set) {
-  *ev_driver = gpr_malloc(sizeof(grpc_ares_ev_driver));
+  *ev_driver = (grpc_ares_ev_driver *)gpr_malloc(sizeof(grpc_ares_ev_driver));
   int status = ares_init(&(*ev_driver)->channel);
   gpr_log(GPR_DEBUG, "grpc_ares_ev_driver_create");
   if (status != ARES_SUCCESS) {
@@ -150,9 +165,8 @@ void grpc_ares_ev_driver_shutdown(grpc_exec_ctx *exec_ctx,
   ev_driver->shutting_down = true;
   fd_node *fn = ev_driver->fds;
   while (fn != NULL) {
-    grpc_fd_shutdown(
-        exec_ctx, fn->grpc_fd,
-        GRPC_ERROR_CREATE_FROM_STATIC_STRING("grpc_ares_ev_driver_shutdown"));
+    grpc_fd_shutdown(exec_ctx, fn->fd, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                           "grpc_ares_ev_driver_shutdown"));
     fn = fn->next;
   }
   gpr_mu_unlock(&ev_driver->mu);
@@ -165,7 +179,7 @@ static fd_node *pop_fd_node(fd_node **head, int fd) {
   dummy_head.next = *head;
   fd_node *node = &dummy_head;
   while (node->next != NULL) {
-    if (grpc_fd_wrapped_fd(node->next->grpc_fd) == fd) {
+    if (grpc_fd_wrapped_fd(node->next->fd) == fd) {
       fd_node *ret = node->next;
       node->next = node->next->next;
       *head = dummy_head.next;
@@ -176,18 +190,33 @@ static fd_node *pop_fd_node(fd_node **head, int fd) {
   return NULL;
 }
 
+/* Check if \a fd is still readable */
+static bool grpc_ares_is_fd_still_readable(grpc_ares_ev_driver *ev_driver,
+                                           int fd) {
+  size_t bytes_available = 0;
+  return ioctl(fd, FIONREAD, &bytes_available) == 0 && bytes_available > 0;
+}
+
 static void on_readable_cb(grpc_exec_ctx *exec_ctx, void *arg,
                            grpc_error *error) {
-  fd_node *fdn = arg;
+  fd_node *fdn = (fd_node *)arg;
   grpc_ares_ev_driver *ev_driver = fdn->ev_driver;
   gpr_mu_lock(&fdn->mu);
+  const int fd = grpc_fd_wrapped_fd(fdn->fd);
   fdn->readable_registered = false;
+  if (fdn->shutting_down && !fdn->writable_registered) {
+    gpr_mu_unlock(&fdn->mu);
+    fd_node_destroy(exec_ctx, fdn);
+    grpc_ares_ev_driver_unref(ev_driver);
+    return;
+  }
   gpr_mu_unlock(&fdn->mu);
 
-  gpr_log(GPR_DEBUG, "readable on %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  gpr_log(GPR_DEBUG, "readable on %d", fd);
   if (error == GRPC_ERROR_NONE) {
-    ares_process_fd(ev_driver->channel, grpc_fd_wrapped_fd(fdn->grpc_fd),
-                    ARES_SOCKET_BAD);
+    do {
+      ares_process_fd(ev_driver->channel, fd, ARES_SOCKET_BAD);
+    } while (grpc_ares_is_fd_still_readable(ev_driver, fd));
   } else {
     // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
     // timed out. The pending lookups made on this ev_driver will be cancelled
@@ -205,16 +234,22 @@ static void on_readable_cb(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void on_writable_cb(grpc_exec_ctx *exec_ctx, void *arg,
                            grpc_error *error) {
-  fd_node *fdn = arg;
+  fd_node *fdn = (fd_node *)arg;
   grpc_ares_ev_driver *ev_driver = fdn->ev_driver;
   gpr_mu_lock(&fdn->mu);
+  const int fd = grpc_fd_wrapped_fd(fdn->fd);
   fdn->writable_registered = false;
+  if (fdn->shutting_down && !fdn->readable_registered) {
+    gpr_mu_unlock(&fdn->mu);
+    fd_node_destroy(exec_ctx, fdn);
+    grpc_ares_ev_driver_unref(ev_driver);
+    return;
+  }
   gpr_mu_unlock(&fdn->mu);
 
-  gpr_log(GPR_DEBUG, "writable on %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  gpr_log(GPR_DEBUG, "writable on %d", fd);
   if (error == GRPC_ERROR_NONE) {
-    ares_process_fd(ev_driver->channel, ARES_SOCKET_BAD,
-                    grpc_fd_wrapped_fd(fdn->grpc_fd));
+    ares_process_fd(ev_driver->channel, ARES_SOCKET_BAD, fd);
   } else {
     // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
     // timed out. The pending lookups made on this ev_driver will be cancelled
@@ -251,19 +286,19 @@ static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
         if (fdn == NULL) {
           char *fd_name;
           gpr_asprintf(&fd_name, "ares_ev_driver-%" PRIuPTR, i);
-          fdn = gpr_malloc(sizeof(fd_node));
+          fdn = (fd_node *)gpr_malloc(sizeof(fd_node));
           gpr_log(GPR_DEBUG, "new fd: %d", socks[i]);
-          fdn->grpc_fd = grpc_fd_create(socks[i], fd_name);
+          fdn->fd = grpc_fd_create(socks[i], fd_name);
           fdn->ev_driver = ev_driver;
           fdn->readable_registered = false;
           fdn->writable_registered = false;
+          fdn->shutting_down = false;
           gpr_mu_init(&fdn->mu);
           GRPC_CLOSURE_INIT(&fdn->read_closure, on_readable_cb, fdn,
                             grpc_schedule_on_exec_ctx);
           GRPC_CLOSURE_INIT(&fdn->write_closure, on_writable_cb, fdn,
                             grpc_schedule_on_exec_ctx);
-          grpc_pollset_set_add_fd(exec_ctx, ev_driver->pollset_set,
-                                  fdn->grpc_fd);
+          grpc_pollset_set_add_fd(exec_ctx, ev_driver->pollset_set, fdn->fd);
           gpr_free(fd_name);
         }
         fdn->next = new_list;
@@ -274,9 +309,8 @@ static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
         if (ARES_GETSOCK_READABLE(socks_bitmask, i) &&
             !fdn->readable_registered) {
           grpc_ares_ev_driver_ref(ev_driver);
-          gpr_log(GPR_DEBUG, "notify read on: %d",
-                  grpc_fd_wrapped_fd(fdn->grpc_fd));
-          grpc_fd_notify_on_read(exec_ctx, fdn->grpc_fd, &fdn->read_closure);
+          gpr_log(GPR_DEBUG, "notify read on: %d", grpc_fd_wrapped_fd(fdn->fd));
+          grpc_fd_notify_on_read(exec_ctx, fdn->fd, &fdn->read_closure);
           fdn->readable_registered = true;
         }
         // Register write_closure if the socket is writable and write_closure
@@ -284,9 +318,9 @@ static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
         if (ARES_GETSOCK_WRITABLE(socks_bitmask, i) &&
             !fdn->writable_registered) {
           gpr_log(GPR_DEBUG, "notify write on: %d",
-                  grpc_fd_wrapped_fd(fdn->grpc_fd));
+                  grpc_fd_wrapped_fd(fdn->fd));
           grpc_ares_ev_driver_ref(ev_driver);
-          grpc_fd_notify_on_write(exec_ctx, fdn->grpc_fd, &fdn->write_closure);
+          grpc_fd_notify_on_write(exec_ctx, fdn->fd, &fdn->write_closure);
           fdn->writable_registered = true;
         }
         gpr_mu_unlock(&fdn->mu);
@@ -299,7 +333,7 @@ static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
   while (ev_driver->fds != NULL) {
     fd_node *cur = ev_driver->fds;
     ev_driver->fds = ev_driver->fds->next;
-    fd_node_destroy(exec_ctx, cur);
+    fd_node_shutdown(exec_ctx, cur);
   }
   ev_driver->fds = new_list;
   // If the ev driver has no working fd, all the tasks are done.
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
index e65723a63b..04379975e1 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
@@ -123,8 +123,8 @@ static void grpc_ares_request_unref(grpc_exec_ctx *exec_ctx,
 static grpc_ares_hostbyname_request *create_hostbyname_request(
     grpc_ares_request *parent_request, char *host, uint16_t port,
     bool is_balancer) {
-  grpc_ares_hostbyname_request *hr =
-      gpr_zalloc(sizeof(grpc_ares_hostbyname_request));
+  grpc_ares_hostbyname_request *hr = (grpc_ares_hostbyname_request *)gpr_zalloc(
+      sizeof(grpc_ares_hostbyname_request));
   hr->parent_request = parent_request;
   hr->host = gpr_strdup(host);
   hr->port = port;
@@ -158,9 +158,9 @@ static void on_hostbyname_done_cb(void *arg, int status, int timeouts,
     for (i = 0; hostent->h_addr_list[i] != NULL; i++) {
     }
     (*lb_addresses)->num_addresses += i;
-    (*lb_addresses)->addresses =
-        gpr_realloc((*lb_addresses)->addresses,
-                    sizeof(grpc_lb_address) * (*lb_addresses)->num_addresses);
+    (*lb_addresses)->addresses = (grpc_lb_address *)gpr_realloc(
+        (*lb_addresses)->addresses,
+        sizeof(grpc_lb_address) * (*lb_addresses)->num_addresses);
     for (i = prev_naddr; i < (*lb_addresses)->num_addresses; i++) {
       switch (hostent->h_addrtype) {
         case AF_INET6: {
@@ -174,7 +174,7 @@ static void on_hostbyname_done_cb(void *arg, int status, int timeouts,
           grpc_lb_addresses_set_address(
               *lb_addresses, i, &addr, addr_len,
               hr->is_balancer /* is_balancer */,
-              hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
+              hr->is_balancer ? hr->host : NULL /* balancer_name */,
               NULL /* user_data */);
           char output[INET6_ADDRSTRLEN];
           ares_inet_ntop(AF_INET6, &addr.sin6_addr, output, INET6_ADDRSTRLEN);
@@ -195,7 +195,7 @@ static void on_hostbyname_done_cb(void *arg, int status, int timeouts,
           grpc_lb_addresses_set_address(
               *lb_addresses, i, &addr, addr_len,
               hr->is_balancer /* is_balancer */,
-              hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
+              hr->is_balancer ? hr->host : NULL /* balancer_name */,
               NULL /* user_data */);
           char output[INET_ADDRSTRLEN];
           ares_inet_ntop(AF_INET, &addr.sin_addr, output, INET_ADDRSTRLEN);
@@ -275,14 +275,15 @@ static void on_txt_done_cb(void *arg, int status, int timeouts,
   gpr_log(GPR_DEBUG, "on_txt_done_cb");
   char *error_msg;
   grpc_ares_request *r = (grpc_ares_request *)arg;
+  const size_t prefix_len = sizeof(g_service_config_attribute_prefix) - 1;
+  struct ares_txt_ext *result = NULL;
+  struct ares_txt_ext *reply = NULL;
+  grpc_error *error = GRPC_ERROR_NONE;
   gpr_mu_lock(&r->mu);
   if (status != ARES_SUCCESS) goto fail;
-  struct ares_txt_ext *reply = NULL;
   status = ares_parse_txt_reply_ext(buf, len, &reply);
   if (status != ARES_SUCCESS) goto fail;
   // Find service config in TXT record.
-  const size_t prefix_len = sizeof(g_service_config_attribute_prefix) - 1;
-  struct ares_txt_ext *result;
   for (result = reply; result != NULL; result = result->next) {
     if (result->record_start &&
         memcmp(result->txt, g_service_config_attribute_prefix, prefix_len) ==
@@ -293,12 +294,12 @@ static void on_txt_done_cb(void *arg, int status, int timeouts,
   // Found a service config record.
   if (result != NULL) {
     size_t service_config_len = result->length - prefix_len;
-    *r->service_config_json_out = gpr_malloc(service_config_len + 1);
+    *r->service_config_json_out = (char *)gpr_malloc(service_config_len + 1);
     memcpy(*r->service_config_json_out, result->txt + prefix_len,
            service_config_len);
     for (result = result->next; result != NULL && !result->record_start;
          result = result->next) {
-      *r->service_config_json_out = gpr_realloc(
+      *r->service_config_json_out = (char *)gpr_realloc(
           *r->service_config_json_out, service_config_len + result->length + 1);
       memcpy(*r->service_config_json_out + service_config_len, result->txt,
              result->length);
@@ -313,7 +314,7 @@ static void on_txt_done_cb(void *arg, int status, int timeouts,
 fail:
   gpr_asprintf(&error_msg, "C-ares TXT lookup status is not ARES_SUCCESS: %s",
                ares_strerror(status));
-  grpc_error *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+  error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
   gpr_free(error_msg);
   if (r->error == GRPC_ERROR_NONE) {
     r->error = error;
@@ -331,6 +332,9 @@ static grpc_ares_request *grpc_dns_lookup_ares_impl(
     grpc_closure *on_done, grpc_lb_addresses **addrs, bool check_grpclb,
     char **service_config_json) {
   grpc_error *error = GRPC_ERROR_NONE;
+  grpc_ares_hostbyname_request *hr = NULL;
+  grpc_ares_request *r = NULL;
+  ares_channel *channel = NULL;
   /* TODO(zyc): Enable tracing after #9603 is checked in */
   /* if (grpc_dns_trace) {
       gpr_log(GPR_DEBUG, "resolve_address (blocking): name=%s, default_port=%s",
@@ -360,7 +364,7 @@ static grpc_ares_request *grpc_dns_lookup_ares_impl(
   error = grpc_ares_ev_driver_create(&ev_driver, interested_parties);
   if (error != GRPC_ERROR_NONE) goto error_cleanup;
 
-  grpc_ares_request *r = gpr_zalloc(sizeof(grpc_ares_request));
+  r = (grpc_ares_request *)gpr_zalloc(sizeof(grpc_ares_request));
   gpr_mu_init(&r->mu);
   r->ev_driver = ev_driver;
   r->on_done = on_done;
@@ -368,7 +372,7 @@ static grpc_ares_request *grpc_dns_lookup_ares_impl(
   r->service_config_json_out = service_config_json;
   r->success = false;
   r->error = GRPC_ERROR_NONE;
-  ares_channel *channel = grpc_ares_ev_driver_get_channel(r->ev_driver);
+  channel = grpc_ares_ev_driver_get_channel(r->ev_driver);
 
   // If dns_server is specified, use it.
   if (dns_server != NULL) {
@@ -409,12 +413,12 @@ static grpc_ares_request *grpc_dns_lookup_ares_impl(
   }
   gpr_ref_init(&r->pending_queries, 1);
   if (grpc_ipv6_loopback_available()) {
-    grpc_ares_hostbyname_request *hr = create_hostbyname_request(
-        r, host, strhtons(port), false /* is_balancer */);
+    hr = create_hostbyname_request(r, host, strhtons(port),
+                                   false /* is_balancer */);
     ares_gethostbyname(*channel, hr->host, AF_INET6, on_hostbyname_done_cb, hr);
   }
-  grpc_ares_hostbyname_request *hr = create_hostbyname_request(
-      r, host, strhtons(port), false /* is_balancer */);
+  hr = create_hostbyname_request(r, host, strhtons(port),
+                                 false /* is_balancer */);
   ares_gethostbyname(*channel, hr->host, AF_INET, on_hostbyname_done_cb, hr);
   if (check_grpclb) {
     /* Query the SRV record */
@@ -502,10 +506,11 @@ static void on_dns_lookup_done_cb(grpc_exec_ctx *exec_ctx, void *arg,
   if (r->lb_addrs == NULL || r->lb_addrs->num_addresses == 0) {
     *resolved_addresses = NULL;
   } else {
-    *resolved_addresses = gpr_zalloc(sizeof(grpc_resolved_addresses));
+    *resolved_addresses =
+        (grpc_resolved_addresses *)gpr_zalloc(sizeof(grpc_resolved_addresses));
     (*resolved_addresses)->naddrs = r->lb_addrs->num_addresses;
-    (*resolved_addresses)->addrs = gpr_zalloc(sizeof(grpc_resolved_address) *
-                                              (*resolved_addresses)->naddrs);
+    (*resolved_addresses)->addrs = (grpc_resolved_address *)gpr_zalloc(
+        sizeof(grpc_resolved_address) * (*resolved_addresses)->naddrs);
     for (size_t i = 0; i < (*resolved_addresses)->naddrs; i++) {
       GPR_ASSERT(!r->lb_addrs->addresses[i].is_balancer);
       memcpy(&(*resolved_addresses)->addrs[i],
@@ -525,7 +530,8 @@ static void grpc_resolve_address_ares_impl(grpc_exec_ctx *exec_ctx,
                                            grpc_closure *on_done,
                                            grpc_resolved_addresses **addrs) {
   grpc_resolve_address_ares_request *r =
-      gpr_zalloc(sizeof(grpc_resolve_address_ares_request));
+      (grpc_resolve_address_ares_request *)gpr_zalloc(
+          sizeof(grpc_resolve_address_ares_request));
   r->addrs_out = addrs;
   r->on_resolve_address_done = on_done;
   GRPC_CLOSURE_INIT(&r->on_dns_lookup_done, on_dns_lookup_done_cb, r,
diff --git a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
index 56ed4371a9..69ea440ae6 100644
--- a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
+++ b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
@@ -32,6 +32,7 @@
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
@@ -125,7 +126,6 @@ static const grpc_resolver_vtable fake_resolver_vtable = {
 
 struct grpc_fake_resolver_response_generator {
   fake_resolver* resolver;  // Set by the fake_resolver constructor to itself.
-  grpc_channel_args* next_response;
   gpr_refcount refcount;
 };
 
@@ -151,19 +151,26 @@ void grpc_fake_resolver_response_generator_unref(
   }
 }
 
-static void set_response_cb(grpc_exec_ctx* exec_ctx, void* arg,
-                            grpc_error* error) {
-  grpc_fake_resolver_response_generator* generator =
-      (grpc_fake_resolver_response_generator*)arg;
+typedef struct set_response_closure_arg {
+  grpc_closure set_response_closure;
+  grpc_fake_resolver_response_generator* generator;
+  grpc_channel_args* next_response;
+} set_response_closure_arg;
+
+static void set_response_closure_fn(grpc_exec_ctx* exec_ctx, void* arg,
+                                    grpc_error* error) {
+  set_response_closure_arg* closure_arg = (set_response_closure_arg*)arg;
+  grpc_fake_resolver_response_generator* generator = closure_arg->generator;
   fake_resolver* r = generator->resolver;
   if (r->next_results != NULL) {
     grpc_channel_args_destroy(exec_ctx, r->next_results);
   }
-  r->next_results = generator->next_response;
+  r->next_results = closure_arg->next_response;
   if (r->results_upon_error != NULL) {
     grpc_channel_args_destroy(exec_ctx, r->results_upon_error);
   }
-  r->results_upon_error = grpc_channel_args_copy(generator->next_response);
+  r->results_upon_error = grpc_channel_args_copy(closure_arg->next_response);
+  gpr_free(closure_arg);
   fake_resolver_maybe_finish_next_locked(exec_ctx, r);
 }
 
@@ -171,12 +178,16 @@ void grpc_fake_resolver_response_generator_set_response(
     grpc_exec_ctx* exec_ctx, grpc_fake_resolver_response_generator* generator,
     grpc_channel_args* next_response) {
   GPR_ASSERT(generator->resolver != NULL);
-  generator->next_response = grpc_channel_args_copy(next_response);
-  GRPC_CLOSURE_SCHED(
-      exec_ctx, GRPC_CLOSURE_CREATE(set_response_cb, generator,
-                                    grpc_combiner_scheduler(
-                                        generator->resolver->base.combiner)),
-      GRPC_ERROR_NONE);
+  set_response_closure_arg* closure_arg =
+      (set_response_closure_arg*)gpr_zalloc(sizeof(*closure_arg));
+  closure_arg->generator = generator;
+  closure_arg->next_response = grpc_channel_args_copy(next_response);
+  GRPC_CLOSURE_SCHED(exec_ctx,
+                     GRPC_CLOSURE_INIT(&closure_arg->set_response_closure,
+                                       set_response_closure_fn, closure_arg,
+                                       grpc_combiner_scheduler(
+                                           generator->resolver->base.combiner)),
+                     GRPC_ERROR_NONE);
 }
 
 static void* response_generator_arg_copy(void* p) {
@@ -199,7 +210,7 @@ grpc_arg grpc_fake_resolver_response_generator_arg(
     grpc_fake_resolver_response_generator* generator) {
   grpc_arg arg;
   arg.type = GRPC_ARG_POINTER;
-  arg.key = GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR;
+  arg.key = (char*)GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR;
   arg.value.pointer.p = generator;
   arg.value.pointer.vtable = &response_generator_arg_vtable;
   return arg;
diff --git a/src/core/ext/filters/client_channel/retry_throttle.c b/src/core/ext/filters/client_channel/retry_throttle.c
index 0c7a3ae651..09dcade089 100644
--- a/src/core/ext/filters/client_channel/retry_throttle.c
+++ b/src/core/ext/filters/client_channel/retry_throttle.c
@@ -99,7 +99,7 @@ static grpc_server_retry_throttle_data* grpc_server_retry_throttle_data_create(
     int max_milli_tokens, int milli_token_ratio,
     grpc_server_retry_throttle_data* old_throttle_data) {
   grpc_server_retry_throttle_data* throttle_data =
-      gpr_malloc(sizeof(*throttle_data));
+      (grpc_server_retry_throttle_data*)gpr_malloc(sizeof(*throttle_data));
   memset(throttle_data, 0, sizeof(*throttle_data));
   gpr_ref_init(&throttle_data->refs, 1);
   throttle_data->max_milli_tokens = max_milli_tokens;
@@ -131,20 +131,22 @@ static grpc_server_retry_throttle_data* grpc_server_retry_throttle_data_create(
 //
 
 static void* copy_server_name(void* key, void* unused) {
-  return gpr_strdup(key);
+  return gpr_strdup((const char*)key);
 }
 
 static long compare_server_name(void* key1, void* key2, void* unused) {
-  return strcmp(key1, key2);
+  return strcmp((const char*)key1, (const char*)key2);
 }
 
 static void destroy_server_retry_throttle_data(void* value, void* unused) {
-  grpc_server_retry_throttle_data* throttle_data = value;
+  grpc_server_retry_throttle_data* throttle_data =
+      (grpc_server_retry_throttle_data*)value;
   grpc_server_retry_throttle_data_unref(throttle_data);
 }
 
 static void* copy_server_retry_throttle_data(void* value, void* unused) {
-  grpc_server_retry_throttle_data* throttle_data = value;
+  grpc_server_retry_throttle_data* throttle_data =
+      (grpc_server_retry_throttle_data*)value;
   return grpc_server_retry_throttle_data_ref(throttle_data);
 }
 
@@ -175,7 +177,8 @@ grpc_server_retry_throttle_data* grpc_retry_throttle_map_get_data_for_server(
     const char* server_name, int max_milli_tokens, int milli_token_ratio) {
   gpr_mu_lock(&g_mu);
   grpc_server_retry_throttle_data* throttle_data =
-      gpr_avl_get(g_avl, (char*)server_name, NULL);
+      (grpc_server_retry_throttle_data*)gpr_avl_get(g_avl, (char*)server_name,
+                                                    NULL);
   if (throttle_data == NULL) {
     // Entry not found.  Create a new one.
     throttle_data = grpc_server_retry_throttle_data_create(
diff --git a/src/core/ext/filters/client_channel/subchannel.c b/src/core/ext/filters/client_channel/subchannel.c
index 5788819331..40a51c72d6 100644
--- a/src/core/ext/filters/client_channel/subchannel.c
+++ b/src/core/ext/filters/client_channel/subchannel.c
@@ -32,6 +32,7 @@
 #include "src/core/ext/filters/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
@@ -157,7 +158,7 @@ static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *subchannel,
 
 static void connection_destroy(grpc_exec_ctx *exec_ctx, void *arg,
                                grpc_error *error) {
-  grpc_connected_subchannel *c = arg;
+  grpc_connected_subchannel *c = (grpc_connected_subchannel *)arg;
   grpc_channel_stack_destroy(exec_ctx, CHANNEL_STACK_FROM_CONNECTION(c));
   gpr_free(c);
 }
@@ -181,7 +182,7 @@ void grpc_connected_subchannel_unref(grpc_exec_ctx *exec_ctx,
 
 static void subchannel_destroy(grpc_exec_ctx *exec_ctx, void *arg,
                                grpc_error *error) {
-  grpc_subchannel *c = arg;
+  grpc_subchannel *c = (grpc_subchannel *)arg;
   gpr_free((void *)c->filters);
   grpc_channel_args_destroy(exec_ctx, c->args);
   grpc_connectivity_state_destroy(exec_ctx, &c->state_tracker);
@@ -290,21 +291,24 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
     return c;
   }
 
-  c = gpr_zalloc(sizeof(*c));
+  GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED(exec_ctx);
+  c = (grpc_subchannel *)gpr_zalloc(sizeof(*c));
   c->key = key;
   gpr_atm_no_barrier_store(&c->ref_pair, 1 << INTERNAL_REF_BITS);
   c->connector = connector;
   grpc_connector_ref(c->connector);
   c->num_filters = args->filter_count;
   if (c->num_filters > 0) {
-    c->filters = gpr_malloc(sizeof(grpc_channel_filter *) * c->num_filters);
+    c->filters = (const grpc_channel_filter **)gpr_malloc(
+        sizeof(grpc_channel_filter *) * c->num_filters);
     memcpy((void *)c->filters, args->filters,
            sizeof(grpc_channel_filter *) * c->num_filters);
   } else {
     c->filters = NULL;
   }
   c->pollset_set = grpc_pollset_set_create();
-  grpc_resolved_address *addr = gpr_malloc(sizeof(*addr));
+  grpc_resolved_address *addr =
+      (grpc_resolved_address *)gpr_malloc(sizeof(*addr));
   grpc_get_subchannel_address_arg(exec_ctx, args->args, addr);
   grpc_resolved_address *new_address = NULL;
   grpc_channel_args *new_args = NULL;
@@ -400,7 +404,7 @@ grpc_connectivity_state grpc_subchannel_check_connectivity(grpc_subchannel *c,
 
 static void on_external_state_watcher_done(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  external_state_watcher *w = arg;
+  external_state_watcher *w = (external_state_watcher *)arg;
   grpc_closure *follow_up = w->notify;
   if (w->pollset_set != NULL) {
     grpc_pollset_set_del_pollset_set(exec_ctx, w->subchannel->pollset_set,
@@ -416,7 +420,7 @@ static void on_external_state_watcher_done(grpc_exec_ctx *exec_ctx, void *arg,
 }
 
 static void on_alarm(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_subchannel *c = arg;
+  grpc_subchannel *c = (grpc_subchannel *)arg;
   gpr_mu_lock(&c->mu);
   c->have_alarm = false;
   if (c->disconnected) {
@@ -501,7 +505,7 @@ void grpc_subchannel_notify_on_state_change(
     }
     gpr_mu_unlock(&c->mu);
   } else {
-    w = gpr_malloc(sizeof(*w));
+    w = (external_state_watcher *)gpr_malloc(sizeof(*w));
     w->subchannel = c;
     w->pollset_set = interested_parties;
     w->notify = notify;
@@ -533,7 +537,7 @@ void grpc_connected_subchannel_process_transport_op(
 
 static void subchannel_on_child_state_changed(grpc_exec_ctx *exec_ctx, void *p,
                                               grpc_error *error) {
-  state_watcher *sw = p;
+  state_watcher *sw = (state_watcher *)p;
   grpc_subchannel *c = sw->subchannel;
   gpr_mu *mu = &c->mu;
 
@@ -623,7 +627,7 @@ static bool publish_transport_locked(grpc_exec_ctx *exec_ctx,
   memset(&c->connecting_result, 0, sizeof(c->connecting_result));
 
   /* initialize state watcher */
-  sw_subchannel = gpr_malloc(sizeof(*sw_subchannel));
+  sw_subchannel = (state_watcher *)gpr_malloc(sizeof(*sw_subchannel));
   sw_subchannel->subchannel = c;
   sw_subchannel->connectivity_state = GRPC_CHANNEL_READY;
   GRPC_CLOSURE_INIT(&sw_subchannel->closure, subchannel_on_child_state_changed,
@@ -660,7 +664,7 @@ static bool publish_transport_locked(grpc_exec_ctx *exec_ctx,
 
 static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *arg,
                                  grpc_error *error) {
-  grpc_subchannel *c = arg;
+  grpc_subchannel *c = (grpc_subchannel *)arg;
   grpc_channel_args *delete_channel_args = c->connecting_result.channel_args;
 
   GRPC_SUBCHANNEL_WEAK_REF(c, "connected");
@@ -696,7 +700,7 @@ static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void subchannel_call_destroy(grpc_exec_ctx *exec_ctx, void *call,
                                     grpc_error *error) {
-  grpc_subchannel_call *c = call;
+  grpc_subchannel_call *c = (grpc_subchannel_call *)call;
   GPR_ASSERT(c->schedule_closure_after_destroy != NULL);
   GPR_TIMER_BEGIN("grpc_subchannel_call_unref.destroy", 0);
   grpc_connected_subchannel *connection = c->connection;
@@ -724,20 +728,14 @@ void grpc_subchannel_call_unref(grpc_exec_ctx *exec_ctx,
   GRPC_CALL_STACK_UNREF(exec_ctx, SUBCHANNEL_CALL_TO_CALL_STACK(c), REF_REASON);
 }
 
-char *grpc_subchannel_call_get_peer(grpc_exec_ctx *exec_ctx,
-                                    grpc_subchannel_call *call) {
-  grpc_call_stack *call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call);
-  grpc_call_element *top_elem = grpc_call_stack_element(call_stack, 0);
-  return top_elem->filter->get_peer(exec_ctx, top_elem);
-}
-
 void grpc_subchannel_call_process_op(grpc_exec_ctx *exec_ctx,
                                      grpc_subchannel_call *call,
-                                     grpc_transport_stream_op_batch *op) {
+                                     grpc_transport_stream_op_batch *batch) {
   GPR_TIMER_BEGIN("grpc_subchannel_call_process_op", 0);
   grpc_call_stack *call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call);
   grpc_call_element *top_elem = grpc_call_stack_element(call_stack, 0);
-  top_elem->filter->start_transport_stream_op_batch(exec_ctx, top_elem, op);
+  GRPC_CALL_LOG_OP(GPR_INFO, top_elem, batch);
+  top_elem->filter->start_transport_stream_op_batch(exec_ctx, top_elem, batch);
   GPR_TIMER_END("grpc_subchannel_call_process_op", 0);
 }
 
@@ -756,17 +754,19 @@ grpc_error *grpc_connected_subchannel_create_call(
     const grpc_connected_subchannel_call_args *args,
     grpc_subchannel_call **call) {
   grpc_channel_stack *chanstk = CHANNEL_STACK_FROM_CONNECTION(con);
-  *call = gpr_arena_alloc(
+  *call = (grpc_subchannel_call *)gpr_arena_alloc(
       args->arena, sizeof(grpc_subchannel_call) + chanstk->call_stack_size);
   grpc_call_stack *callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call);
   (*call)->connection = GRPC_CONNECTED_SUBCHANNEL_REF(con, "subchannel_call");
-  const grpc_call_element_args call_args = {.call_stack = callstk,
-                                            .server_transport_data = NULL,
-                                            .context = args->context,
-                                            .path = args->path,
-                                            .start_time = args->start_time,
-                                            .deadline = args->deadline,
-                                            .arena = args->arena};
+  const grpc_call_element_args call_args = {
+      .call_stack = callstk,
+      .server_transport_data = NULL,
+      .context = args->context,
+      .path = args->path,
+      .start_time = args->start_time,
+      .deadline = args->deadline,
+      .arena = args->arena,
+      .call_combiner = args->call_combiner};
   grpc_error *error = grpc_call_stack_init(
       exec_ctx, chanstk, 1, subchannel_call_destroy, *call, &call_args);
   if (error != GRPC_ERROR_NONE) {
@@ -811,6 +811,6 @@ const char *grpc_get_subchannel_address_uri_arg(const grpc_channel_args *args) {
 
 grpc_arg grpc_create_subchannel_address_arg(const grpc_resolved_address *addr) {
   return grpc_channel_arg_string_create(
-      GRPC_ARG_SUBCHANNEL_ADDRESS,
+      (char *)GRPC_ARG_SUBCHANNEL_ADDRESS,
       addr->len > 0 ? grpc_sockaddr_to_uri(addr) : gpr_strdup(""));
 }
diff --git a/src/core/ext/filters/client_channel/subchannel.h b/src/core/ext/filters/client_channel/subchannel.h
index 6d2abb04df..51d712f6a7 100644
--- a/src/core/ext/filters/client_channel/subchannel.h
+++ b/src/core/ext/filters/client_channel/subchannel.h
@@ -106,6 +106,7 @@ typedef struct {
   gpr_timespec deadline;
   gpr_arena *arena;
   grpc_call_context_element *context;
+  grpc_call_combiner *call_combiner;
 } grpc_connected_subchannel_call_args;
 
 grpc_error *grpc_connected_subchannel_create_call(
@@ -150,10 +151,6 @@ void grpc_subchannel_call_process_op(grpc_exec_ctx *exec_ctx,
                                      grpc_subchannel_call *subchannel_call,
                                      grpc_transport_stream_op_batch *op);
 
-/** continue querying for peer */
-char *grpc_subchannel_call_get_peer(grpc_exec_ctx *exec_ctx,
-                                    grpc_subchannel_call *subchannel_call);
-
 /** Must be called once per call. Sets the 'then_schedule_closure' argument for
     call stack destruction. */
 void grpc_subchannel_call_set_cleanup_closure(
diff --git a/src/core/ext/filters/client_channel/subchannel_index.c b/src/core/ext/filters/client_channel/subchannel_index.c
index ababd05d84..d7a51f3899 100644
--- a/src/core/ext/filters/client_channel/subchannel_index.c
+++ b/src/core/ext/filters/client_channel/subchannel_index.c
@@ -34,6 +34,8 @@ static gpr_avl g_subchannel_index;
 
 static gpr_mu g_mu;
 
+static gpr_refcount g_refcount;
+
 struct grpc_subchannel_key {
   grpc_subchannel_args args;
 };
@@ -43,11 +45,11 @@ static bool g_force_creation = false;
 static grpc_subchannel_key *create_key(
     const grpc_subchannel_args *args,
     grpc_channel_args *(*copy_channel_args)(const grpc_channel_args *args)) {
-  grpc_subchannel_key *k = gpr_malloc(sizeof(*k));
+  grpc_subchannel_key *k = (grpc_subchannel_key *)gpr_malloc(sizeof(*k));
   k->args.filter_count = args->filter_count;
   if (k->args.filter_count > 0) {
-    k->args.filters =
-        gpr_malloc(sizeof(*k->args.filters) * k->args.filter_count);
+    k->args.filters = (const grpc_channel_filter **)gpr_malloc(
+        sizeof(*k->args.filters) * k->args.filter_count);
     memcpy((grpc_channel_filter *)k->args.filters, args->filters,
            sizeof(*k->args.filters) * k->args.filter_count);
   } else {
@@ -88,24 +90,26 @@ void grpc_subchannel_key_destroy(grpc_exec_ctx *exec_ctx,
 
 static void sck_avl_destroy(void *p, void *user_data) {
   grpc_exec_ctx *exec_ctx = (grpc_exec_ctx *)user_data;
-  grpc_subchannel_key_destroy(exec_ctx, p);
+  grpc_subchannel_key_destroy(exec_ctx, (grpc_subchannel_key *)p);
 }
 
 static void *sck_avl_copy(void *p, void *unused) {
-  return subchannel_key_copy(p);
+  return subchannel_key_copy((grpc_subchannel_key *)p);
 }
 
 static long sck_avl_compare(void *a, void *b, void *unused) {
-  return grpc_subchannel_key_compare(a, b);
+  return grpc_subchannel_key_compare((grpc_subchannel_key *)a,
+                                     (grpc_subchannel_key *)b);
 }
 
 static void scv_avl_destroy(void *p, void *user_data) {
   grpc_exec_ctx *exec_ctx = (grpc_exec_ctx *)user_data;
-  GRPC_SUBCHANNEL_WEAK_UNREF(exec_ctx, p, "subchannel_index");
+  GRPC_SUBCHANNEL_WEAK_UNREF(exec_ctx, (grpc_subchannel *)p,
+                             "subchannel_index");
 }
 
 static void *scv_avl_copy(void *p, void *unused) {
-  GRPC_SUBCHANNEL_WEAK_REF(p, "subchannel_index");
+  GRPC_SUBCHANNEL_WEAK_REF((grpc_subchannel *)p, "subchannel_index");
   return p;
 }
 
@@ -119,15 +123,27 @@ static const gpr_avl_vtable subchannel_avl_vtable = {
 void grpc_subchannel_index_init(void) {
   g_subchannel_index = gpr_avl_create(&subchannel_avl_vtable);
   gpr_mu_init(&g_mu);
+  gpr_ref_init(&g_refcount, 1);
 }
 
 void grpc_subchannel_index_shutdown(void) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  gpr_mu_destroy(&g_mu);
-  gpr_avl_unref(g_subchannel_index, &exec_ctx);
-  grpc_exec_ctx_finish(&exec_ctx);
+  // TODO(juanlishen): This refcounting mechanism may lead to memory leackage.
+  // To solve that, we should force polling to flush any pending callbacks, then
+  // shutdown safely.
+  grpc_subchannel_index_unref();
+}
+
+void grpc_subchannel_index_unref(void) {
+  if (gpr_unref(&g_refcount)) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    gpr_mu_destroy(&g_mu);
+    gpr_avl_unref(g_subchannel_index, &exec_ctx);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
 }
 
+void grpc_subchannel_index_ref(void) { gpr_ref_non_zero(&g_refcount); }
+
 grpc_subchannel *grpc_subchannel_index_find(grpc_exec_ctx *exec_ctx,
                                             grpc_subchannel_key *key) {
   // Lock, and take a reference to the subchannel index.
@@ -137,7 +153,7 @@ grpc_subchannel *grpc_subchannel_index_find(grpc_exec_ctx *exec_ctx,
   gpr_mu_unlock(&g_mu);
 
   grpc_subchannel *c = GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(
-      gpr_avl_get(index, key, exec_ctx), "index_find");
+      (grpc_subchannel *)gpr_avl_get(index, key, exec_ctx), "index_find");
   gpr_avl_unref(index, exec_ctx);
 
   return c;
@@ -159,7 +175,7 @@ grpc_subchannel *grpc_subchannel_index_register(grpc_exec_ctx *exec_ctx,
     gpr_mu_unlock(&g_mu);
 
     // - Check to see if a subchannel already exists
-    c = gpr_avl_get(index, key, exec_ctx);
+    c = (grpc_subchannel *)gpr_avl_get(index, key, exec_ctx);
     if (c != NULL) {
       c = GRPC_SUBCHANNEL_REF_FROM_WEAK_REF(c, "index_register");
     }
@@ -207,7 +223,7 @@ void grpc_subchannel_index_unregister(grpc_exec_ctx *exec_ctx,
 
     // Check to see if this key still refers to the previously
     // registered subchannel
-    grpc_subchannel *c = gpr_avl_get(index, key, exec_ctx);
+    grpc_subchannel *c = (grpc_subchannel *)gpr_avl_get(index, key, exec_ctx);
     if (c != constructed) {
       gpr_avl_unref(index, exec_ctx);
       break;
diff --git a/src/core/ext/filters/client_channel/subchannel_index.h b/src/core/ext/filters/client_channel/subchannel_index.h
index 98d882a453..92e36d5283 100644
--- a/src/core/ext/filters/client_channel/subchannel_index.h
+++ b/src/core/ext/filters/client_channel/subchannel_index.h
@@ -59,6 +59,13 @@ void grpc_subchannel_index_init(void);
 /** Shutdown the subchannel index (global) */
 void grpc_subchannel_index_shutdown(void);
 
+/** Increment the refcount (non-zero) of subchannel index (global). */
+void grpc_subchannel_index_ref(void);
+
+/** Decrement the refcount of subchannel index (global). If the refcount drops
+    to zero, unref the subchannel index and destroy its mutex. */
+void grpc_subchannel_index_unref(void);
+
 /** \em TEST ONLY.
  * If \a force_creation is true, all key comparisons will be false, resulting in
  * new subchannels always being created. Otherwise, the keys will be compared as
diff --git a/src/core/ext/filters/client_channel/uri_parser.c b/src/core/ext/filters/client_channel/uri_parser.c
index e841928760..fb4fb8e694 100644
--- a/src/core/ext/filters/client_channel/uri_parser.c
+++ b/src/core/ext/filters/client_channel/uri_parser.c
@@ -45,7 +45,7 @@ static grpc_uri *bad_uri(const char *uri_text, size_t pos, const char *section,
     gpr_log(GPR_ERROR, "%s%s'", line_prefix, uri_text);
     gpr_free(line_prefix);
 
-    line_prefix = gpr_malloc(pfx_len + 1);
+    line_prefix = (char *)gpr_malloc(pfx_len + 1);
     memset(line_prefix, ' ', pfx_len);
     line_prefix[pfx_len] = 0;
     gpr_log(GPR_ERROR, "%s^ here", line_prefix);
@@ -156,7 +156,8 @@ static void parse_query_parts(grpc_uri *uri) {
 
   gpr_string_split(uri->query, QUERY_PARTS_SEPARATOR, &uri->query_parts,
                    &uri->num_query_parts);
-  uri->query_parts_values = gpr_malloc(uri->num_query_parts * sizeof(char **));
+  uri->query_parts_values =
+      (char **)gpr_malloc(uri->num_query_parts * sizeof(char **));
   for (size_t i = 0; i < uri->num_query_parts; i++) {
     char **query_param_parts;
     size_t num_query_param_parts;
@@ -269,7 +270,7 @@ grpc_uri *grpc_uri_parse(grpc_exec_ctx *exec_ctx, const char *uri_text,
     fragment_end = i;
   }
 
-  uri = gpr_zalloc(sizeof(*uri));
+  uri = (grpc_uri *)gpr_zalloc(sizeof(*uri));
   uri->scheme =
       decode_and_copy_component(exec_ctx, uri_text, scheme_begin, scheme_end);
   uri->authority = decode_and_copy_component(exec_ctx, uri_text,
diff --git a/src/core/ext/filters/deadline/deadline_filter.c b/src/core/ext/filters/deadline/deadline_filter.c
index 6789903c95..1aed488077 100644
--- a/src/core/ext/filters/deadline/deadline_filter.c
+++ b/src/core/ext/filters/deadline/deadline_filter.c
@@ -34,22 +34,56 @@
 // grpc_deadline_state
 //
 
+// The on_complete callback used when sending a cancel_error batch down the
+// filter stack.  Yields the call combiner when the batch returns.
+static void yield_call_combiner(grpc_exec_ctx* exec_ctx, void* arg,
+                                grpc_error* ignored) {
+  grpc_deadline_state* deadline_state = (grpc_deadline_state*)arg;
+  GRPC_CALL_COMBINER_STOP(exec_ctx, deadline_state->call_combiner,
+                          "got on_complete from cancel_stream batch");
+  GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack, "deadline_timer");
+}
+
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
+static void send_cancel_op_in_call_combiner(grpc_exec_ctx* exec_ctx, void* arg,
+                                            grpc_error* error) {
+  grpc_call_element* elem = (grpc_call_element*)arg;
+  grpc_deadline_state* deadline_state = (grpc_deadline_state*)elem->call_data;
+  grpc_transport_stream_op_batch* batch = grpc_make_transport_stream_op(
+      GRPC_CLOSURE_INIT(&deadline_state->timer_callback, yield_call_combiner,
+                        deadline_state, grpc_schedule_on_exec_ctx));
+  batch->cancel_stream = true;
+  batch->payload->cancel_stream.cancel_error = GRPC_ERROR_REF(error);
+  elem->filter->start_transport_stream_op_batch(exec_ctx, elem, batch);
+}
+
 // Timer callback.
 static void timer_callback(grpc_exec_ctx* exec_ctx, void* arg,
                            grpc_error* error) {
   grpc_call_element* elem = (grpc_call_element*)arg;
   grpc_deadline_state* deadline_state = (grpc_deadline_state*)elem->call_data;
   if (error != GRPC_ERROR_CANCELLED) {
-    grpc_call_element_signal_error(
-        exec_ctx, elem,
-        grpc_error_set_int(
-            GRPC_ERROR_CREATE_FROM_STATIC_STRING("Deadline Exceeded"),
-            GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_DEADLINE_EXCEEDED));
+    error = grpc_error_set_int(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Deadline Exceeded"),
+        GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_DEADLINE_EXCEEDED);
+    grpc_call_combiner_cancel(exec_ctx, deadline_state->call_combiner,
+                              GRPC_ERROR_REF(error));
+    GRPC_CLOSURE_INIT(&deadline_state->timer_callback,
+                      send_cancel_op_in_call_combiner, elem,
+                      grpc_schedule_on_exec_ctx);
+    GRPC_CALL_COMBINER_START(exec_ctx, deadline_state->call_combiner,
+                             &deadline_state->timer_callback, error,
+                             "deadline exceeded -- sending cancel_stream op");
+  } else {
+    GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack,
+                          "deadline_timer");
   }
-  GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack, "deadline_timer");
 }
 
 // Starts the deadline timer.
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
 static void start_timer_if_needed(grpc_exec_ctx* exec_ctx,
                                   grpc_call_element* elem,
                                   gpr_timespec deadline) {
@@ -58,51 +92,39 @@ static void start_timer_if_needed(grpc_exec_ctx* exec_ctx,
     return;
   }
   grpc_deadline_state* deadline_state = (grpc_deadline_state*)elem->call_data;
-  grpc_deadline_timer_state cur_state;
   grpc_closure* closure = NULL;
-retry:
-  cur_state =
-      (grpc_deadline_timer_state)gpr_atm_acq_load(&deadline_state->timer_state);
-  switch (cur_state) {
+  switch (deadline_state->timer_state) {
     case GRPC_DEADLINE_STATE_PENDING:
       // Note: We do not start the timer if there is already a timer
       return;
     case GRPC_DEADLINE_STATE_FINISHED:
-      if (gpr_atm_rel_cas(&deadline_state->timer_state,
-                          GRPC_DEADLINE_STATE_FINISHED,
-                          GRPC_DEADLINE_STATE_PENDING)) {
-        // If we've already created and destroyed a timer, we always create a
-        // new closure: we have no other guarantee that the inlined closure is
-        // not in use (it may hold a pending call to timer_callback)
-        closure = GRPC_CLOSURE_CREATE(timer_callback, elem,
-                                      grpc_schedule_on_exec_ctx);
-      } else {
-        goto retry;
-      }
+      deadline_state->timer_state = GRPC_DEADLINE_STATE_PENDING;
+      // If we've already created and destroyed a timer, we always create a
+      // new closure: we have no other guarantee that the inlined closure is
+      // not in use (it may hold a pending call to timer_callback)
+      closure =
+          GRPC_CLOSURE_CREATE(timer_callback, elem, grpc_schedule_on_exec_ctx);
       break;
     case GRPC_DEADLINE_STATE_INITIAL:
-      if (gpr_atm_rel_cas(&deadline_state->timer_state,
-                          GRPC_DEADLINE_STATE_INITIAL,
-                          GRPC_DEADLINE_STATE_PENDING)) {
-        closure =
-            GRPC_CLOSURE_INIT(&deadline_state->timer_callback, timer_callback,
-                              elem, grpc_schedule_on_exec_ctx);
-      } else {
-        goto retry;
-      }
+      deadline_state->timer_state = GRPC_DEADLINE_STATE_PENDING;
+      closure =
+          GRPC_CLOSURE_INIT(&deadline_state->timer_callback, timer_callback,
+                            elem, grpc_schedule_on_exec_ctx);
       break;
   }
-  GPR_ASSERT(closure);
+  GPR_ASSERT(closure != NULL);
   GRPC_CALL_STACK_REF(deadline_state->call_stack, "deadline_timer");
   grpc_timer_init(exec_ctx, &deadline_state->timer, deadline, closure,
                   gpr_now(GPR_CLOCK_MONOTONIC));
 }
 
 // Cancels the deadline timer.
+// This is called via the call combiner, so access to deadline_state is
+// synchronized.
 static void cancel_timer_if_needed(grpc_exec_ctx* exec_ctx,
                                    grpc_deadline_state* deadline_state) {
-  if (gpr_atm_rel_cas(&deadline_state->timer_state, GRPC_DEADLINE_STATE_PENDING,
-                      GRPC_DEADLINE_STATE_FINISHED)) {
+  if (deadline_state->timer_state == GRPC_DEADLINE_STATE_PENDING) {
+    deadline_state->timer_state = GRPC_DEADLINE_STATE_FINISHED;
     grpc_timer_cancel(exec_ctx, &deadline_state->timer);
   } else {
     // timer was either in STATE_INITAL (nothing to cancel)
@@ -131,22 +153,39 @@ static void inject_on_complete_cb(grpc_deadline_state* deadline_state,
 // Callback and associated state for starting the timer after call stack
 // initialization has been completed.
 struct start_timer_after_init_state {
+  bool in_call_combiner;
   grpc_call_element* elem;
   gpr_timespec deadline;
   grpc_closure closure;
 };
 static void start_timer_after_init(grpc_exec_ctx* exec_ctx, void* arg,
                                    grpc_error* error) {
-  struct start_timer_after_init_state* state = arg;
+  struct start_timer_after_init_state* state =
+      (struct start_timer_after_init_state*)arg;
+  grpc_deadline_state* deadline_state =
+      (grpc_deadline_state*)state->elem->call_data;
+  if (!state->in_call_combiner) {
+    // We are initially called without holding the call combiner, so we
+    // need to bounce ourselves into it.
+    state->in_call_combiner = true;
+    GRPC_CALL_COMBINER_START(exec_ctx, deadline_state->call_combiner,
+                             &state->closure, GRPC_ERROR_REF(error),
+                             "scheduling deadline timer");
+    return;
+  }
   start_timer_if_needed(exec_ctx, state->elem, state->deadline);
   gpr_free(state);
+  GRPC_CALL_COMBINER_STOP(exec_ctx, deadline_state->call_combiner,
+                          "done scheduling deadline timer");
 }
 
 void grpc_deadline_state_init(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                               grpc_call_stack* call_stack,
+                              grpc_call_combiner* call_combiner,
                               gpr_timespec deadline) {
   grpc_deadline_state* deadline_state = (grpc_deadline_state*)elem->call_data;
   deadline_state->call_stack = call_stack;
+  deadline_state->call_combiner = call_combiner;
   // Deadline will always be infinite on servers, so the timer will only be
   // set on clients with a finite deadline.
   deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC);
@@ -158,7 +197,8 @@ void grpc_deadline_state_init(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
     // call stack initialization is finished.  To avoid that problem, we
     // create a closure to start the timer, and we schedule that closure
     // to be run after call stack initialization is done.
-    struct start_timer_after_init_state* state = gpr_malloc(sizeof(*state));
+    struct start_timer_after_init_state* state =
+        (struct start_timer_after_init_state*)gpr_zalloc(sizeof(*state));
     state->elem = elem;
     state->deadline = deadline;
     GRPC_CLOSURE_INIT(&state->closure, start_timer_after_init, state,
@@ -232,7 +272,8 @@ typedef struct server_call_data {
 static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
                                   grpc_call_element* elem,
                                   const grpc_call_element_args* args) {
-  grpc_deadline_state_init(exec_ctx, elem, args->call_stack, args->deadline);
+  grpc_deadline_state_init(exec_ctx, elem, args->call_stack,
+                           args->call_combiner, args->deadline);
   return GRPC_ERROR_NONE;
 }
 
@@ -310,7 +351,6 @@ const grpc_channel_filter grpc_client_deadline_filter = {
     0,  // sizeof(channel_data)
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "deadline",
 };
@@ -325,7 +365,6 @@ const grpc_channel_filter grpc_server_deadline_filter = {
     0,  // sizeof(channel_data)
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "deadline",
 };
diff --git a/src/core/ext/filters/deadline/deadline_filter.h b/src/core/ext/filters/deadline/deadline_filter.h
index 420bf7065a..3eb102ad28 100644
--- a/src/core/ext/filters/deadline/deadline_filter.h
+++ b/src/core/ext/filters/deadline/deadline_filter.h
@@ -31,7 +31,8 @@ typedef enum grpc_deadline_timer_state {
 typedef struct grpc_deadline_state {
   // We take a reference to the call stack for the timer callback.
   grpc_call_stack* call_stack;
-  gpr_atm timer_state;
+  grpc_call_combiner* call_combiner;
+  grpc_deadline_timer_state timer_state;
   grpc_timer timer;
   grpc_closure timer_callback;
   // Closure to invoke when the call is complete.
@@ -50,6 +51,7 @@ typedef struct grpc_deadline_state {
 // assumes elem->call_data is zero'd
 void grpc_deadline_state_init(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                               grpc_call_stack* call_stack,
+                              grpc_call_combiner* call_combiner,
                               gpr_timespec deadline);
 void grpc_deadline_state_destroy(grpc_exec_ctx* exec_ctx,
                                  grpc_call_element* elem);
@@ -61,6 +63,8 @@ void grpc_deadline_state_destroy(grpc_exec_ctx* exec_ctx,
 // to ensure that the timer callback is not invoked while it is in the
 // process of being reset, which means that attempting to increase the
 // deadline may result in the timer being called twice.
+//
+// Note: Must be called while holding the call combiner.
 void grpc_deadline_state_reset(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                                gpr_timespec new_deadline);
 
@@ -70,6 +74,8 @@ void grpc_deadline_state_reset(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
 //
 // Note: It is the caller's responsibility to chain to the next filter if
 // necessary after this function returns.
+//
+// Note: Must be called while holding the call combiner.
 void grpc_deadline_state_client_start_transport_stream_op_batch(
     grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
     grpc_transport_stream_op_batch* op);
diff --git a/src/core/ext/filters/http/client/http_client_filter.c b/src/core/ext/filters/http/client/http_client_filter.c
index 3ca01a41b5..6208089f2e 100644
--- a/src/core/ext/filters/http/client/http_client_filter.c
+++ b/src/core/ext/filters/http/client/http_client_filter.c
@@ -36,6 +36,7 @@
 static const size_t kMaxPayloadSizeForGet = 2048;
 
 typedef struct call_data {
+  grpc_call_combiner *call_combiner;
   // State for handling send_initial_metadata ops.
   grpc_linked_mdelem method;
   grpc_linked_mdelem scheme;
@@ -138,8 +139,8 @@ static grpc_error *client_filter_incoming_metadata(grpc_exec_ctx *exec_ctx,
 
 static void recv_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
                                         void *user_data, grpc_error *error) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (error == GRPC_ERROR_NONE) {
     error = client_filter_incoming_metadata(exec_ctx, elem,
                                             calld->recv_initial_metadata);
@@ -153,8 +154,8 @@ static void recv_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
 static void recv_trailing_metadata_on_complete(grpc_exec_ctx *exec_ctx,
                                                void *user_data,
                                                grpc_error *error) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (error == GRPC_ERROR_NONE) {
     error = client_filter_incoming_metadata(exec_ctx, elem,
                                             calld->recv_trailing_metadata);
@@ -215,13 +216,13 @@ static void on_send_message_next_done(grpc_exec_ctx *exec_ctx, void *arg,
   call_data *calld = (call_data *)elem->call_data;
   if (error != GRPC_ERROR_NONE) {
     grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, calld->send_message_batch, error);
+        exec_ctx, calld->send_message_batch, error, calld->call_combiner);
     return;
   }
   error = pull_slice_from_send_message(exec_ctx, calld);
   if (error != GRPC_ERROR_NONE) {
     grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, calld->send_message_batch, error);
+        exec_ctx, calld->send_message_batch, error, calld->call_combiner);
     return;
   }
   // There may or may not be more to read, but we don't care.  If we got
@@ -233,7 +234,7 @@ static void on_send_message_next_done(grpc_exec_ctx *exec_ctx, void *arg,
 }
 
 static char *slice_buffer_to_string(grpc_slice_buffer *slice_buffer) {
-  char *payload_bytes = gpr_malloc(slice_buffer->length + 1);
+  char *payload_bytes = (char *)gpr_malloc(slice_buffer->length + 1);
   size_t offset = 0;
   for (size_t i = 0; i < slice_buffer->count; ++i) {
     memcpy(payload_bytes + offset,
@@ -299,10 +300,9 @@ static void remove_if_present(grpc_exec_ctx *exec_ctx,
 static void hc_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *batch) {
-  call_data *calld = elem->call_data;
-  channel_data *channeld = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *channeld = (channel_data *)elem->channel_data;
   GPR_TIMER_BEGIN("hc_start_transport_stream_op_batch", 0);
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, batch);
 
   if (batch->recv_initial_metadata) {
     /* substitute our callback for the higher callback */
@@ -414,7 +414,7 @@ static void hc_start_transport_stream_op_batch(
 done:
   if (error != GRPC_ERROR_NONE) {
     grpc_transport_stream_op_batch_finish_with_failure(
-        exec_ctx, calld->send_message_batch, error);
+        exec_ctx, calld->send_message_batch, error, calld->call_combiner);
   } else if (!batch_will_be_handled_asynchronously) {
     grpc_call_next_op(exec_ctx, elem, batch);
   }
@@ -426,6 +426,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
   call_data *calld = (call_data *)elem->call_data;
+  calld->call_combiner = args->call_combiner;
   GRPC_CLOSURE_INIT(&calld->recv_initial_metadata_ready,
                     recv_initial_metadata_ready, elem,
                     grpc_schedule_on_exec_ctx);
@@ -535,7 +536,7 @@ static grpc_slice user_agent_from_args(const grpc_channel_args *args,
 static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_channel_element *elem,
                                      grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GPR_ASSERT(!args->is_last);
   GPR_ASSERT(args->optional_transport != NULL);
   chand->static_scheme = scheme_from_args(args->channel_args);
@@ -551,7 +552,7 @@ static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
 /* Destructor for channel data */
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GRPC_MDELEM_UNREF(exec_ctx, chand->user_agent);
 }
 
@@ -565,6 +566,5 @@ const grpc_channel_filter grpc_http_client_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "http-client"};
diff --git a/src/core/ext/filters/http/http_filters_plugin.c b/src/core/ext/filters/http/http_filters_plugin.c
index a5c1b92054..88bd2250f9 100644
--- a/src/core/ext/filters/http/http_filters_plugin.c
+++ b/src/core/ext/filters/http/http_filters_plugin.c
@@ -44,7 +44,7 @@ static bool maybe_add_optional_filter(grpc_exec_ctx *exec_ctx,
                                       grpc_channel_stack_builder *builder,
                                       void *arg) {
   if (!is_building_http_like_transport(builder)) return true;
-  optional_filter *filtarg = arg;
+  optional_filter *filtarg = (optional_filter *)arg;
   const grpc_channel_args *channel_args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
   bool enable = grpc_channel_arg_get_bool(
diff --git a/src/core/ext/filters/http/message_compress/message_compress_filter.c b/src/core/ext/filters/http/message_compress/message_compress_filter.c
index 20a3488115..f785e1355d 100644
--- a/src/core/ext/filters/http/message_compress/message_compress_filter.c
+++ b/src/core/ext/filters/http/message_compress/message_compress_filter.c
@@ -35,33 +35,29 @@
 #include "src/core/lib/surface/call.h"
 #include "src/core/lib/transport/static_metadata.h"
 
-#define INITIAL_METADATA_UNSEEN 0
-#define HAS_COMPRESSION_ALGORITHM 2
-#define NO_COMPRESSION_ALGORITHM 4
-
-#define CANCELLED_BIT ((gpr_atm)1)
+typedef enum {
+  // Initial metadata not yet seen.
+  INITIAL_METADATA_UNSEEN = 0,
+  // Initial metadata seen; compression algorithm set.
+  HAS_COMPRESSION_ALGORITHM,
+  // Initial metadata seen; no compression algorithm set.
+  NO_COMPRESSION_ALGORITHM,
+} initial_metadata_state;
 
 typedef struct call_data {
-  grpc_slice_buffer slices; /**< Buffers up input slices to be compressed */
+  grpc_call_combiner *call_combiner;
   grpc_linked_mdelem compression_algorithm_storage;
+  grpc_linked_mdelem stream_compression_algorithm_storage;
   grpc_linked_mdelem accept_encoding_storage;
-  uint32_t remaining_slice_bytes;
+  grpc_linked_mdelem accept_stream_encoding_storage;
   /** Compression algorithm we'll try to use. It may be given by incoming
    * metadata, or by the channel's default compression settings. */
   grpc_compression_algorithm compression_algorithm;
-
-  /* Atomic recording the state of initial metadata; allowed values:
-     INITIAL_METADATA_UNSEEN - initial metadata op not seen
-     HAS_COMPRESSION_ALGORITHM - initial metadata seen; compression algorithm
-                                 set
-     NO_COMPRESSION_ALGORITHM - initial metadata seen; no compression algorithm
-                                set
-     pointer - a stalled op containing a send_message that's waiting on initial
-               metadata
-     pointer | CANCELLED_BIT - request was cancelled with error pointed to */
-  gpr_atm send_initial_metadata_state;
-
+  initial_metadata_state send_initial_metadata_state;
+  grpc_error *cancel_error;
+  grpc_closure start_send_message_batch_in_call_combiner;
   grpc_transport_stream_op_batch *send_message_batch;
+  grpc_slice_buffer slices; /**< Buffers up input slices to be compressed */
   grpc_slice_buffer_stream replacement_stream;
   grpc_closure *original_send_message_on_complete;
   grpc_closure send_message_on_complete;
@@ -75,21 +71,28 @@ typedef struct channel_data {
   uint32_t enabled_algorithms_bitset;
   /** Supported compression algorithms */
   uint32_t supported_compression_algorithms;
+
+  /** The default, channel-level, stream compression algorithm */
+  grpc_stream_compression_algorithm default_stream_compression_algorithm;
+  /** Bitset of enabled stream compression algorithms */
+  uint32_t enabled_stream_compression_algorithms_bitset;
+  /** Supported stream compression algorithms */
+  uint32_t supported_stream_compression_algorithms;
 } channel_data;
 
 static bool skip_compression(grpc_call_element *elem, uint32_t flags,
                              bool has_compression_algorithm) {
-  call_data *calld = elem->call_data;
-  channel_data *channeld = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *channeld = (channel_data *)elem->channel_data;
 
   if (flags & (GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_INTERNAL_COMPRESS)) {
-    return 1;
+    return true;
   }
   if (has_compression_algorithm) {
     if (calld->compression_algorithm == GRPC_COMPRESS_NONE) {
-      return 1;
+      return true;
     }
-    return 0; /* we have an actual call-specific algorithm */
+    return false; /* we have an actual call-specific algorithm */
   }
   /* no per-call compression override */
   return channeld->default_compression_algorithm == GRPC_COMPRESS_NONE;
@@ -103,34 +106,59 @@ static grpc_error *process_send_initial_metadata(
 static grpc_error *process_send_initial_metadata(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_metadata_batch *initial_metadata, bool *has_compression_algorithm) {
-  call_data *calld = elem->call_data;
-  channel_data *channeld = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *channeld = (channel_data *)elem->channel_data;
   *has_compression_algorithm = false;
-  /* Parse incoming request for compression. If any, it'll be available
-   * at calld->compression_algorithm */
-  if (initial_metadata->idx.named.grpc_internal_encoding_request != NULL) {
+  grpc_stream_compression_algorithm stream_compression_algorithm =
+      GRPC_STREAM_COMPRESS_NONE;
+  if (initial_metadata->idx.named.grpc_internal_stream_encoding_request !=
+      NULL) {
     grpc_mdelem md =
-        initial_metadata->idx.named.grpc_internal_encoding_request->md;
-    if (!grpc_compression_algorithm_parse(GRPC_MDVALUE(md),
-                                          &calld->compression_algorithm)) {
+        initial_metadata->idx.named.grpc_internal_stream_encoding_request->md;
+    if (!grpc_stream_compression_algorithm_parse(
+            GRPC_MDVALUE(md), &stream_compression_algorithm)) {
       char *val = grpc_slice_to_c_string(GRPC_MDVALUE(md));
       gpr_log(GPR_ERROR,
-              "Invalid compression algorithm: '%s' (unknown). Ignoring.", val);
+              "Invalid stream compression algorithm: '%s' (unknown). Ignoring.",
+              val);
       gpr_free(val);
-      calld->compression_algorithm = GRPC_COMPRESS_NONE;
+      stream_compression_algorithm = GRPC_STREAM_COMPRESS_NONE;
+    }
+    if (!GPR_BITGET(channeld->enabled_stream_compression_algorithms_bitset,
+                    stream_compression_algorithm)) {
+      char *val = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+      gpr_log(
+          GPR_ERROR,
+          "Invalid stream compression algorithm: '%s' (previously disabled). "
+          "Ignoring.",
+          val);
+      gpr_free(val);
+      stream_compression_algorithm = GRPC_STREAM_COMPRESS_NONE;
+    }
+    *has_compression_algorithm = true;
+    grpc_metadata_batch_remove(
+        exec_ctx, initial_metadata,
+        initial_metadata->idx.named.grpc_internal_stream_encoding_request);
+    /* Disable message-wise compression */
+    calld->compression_algorithm = GRPC_COMPRESS_NONE;
+    if (initial_metadata->idx.named.grpc_internal_encoding_request != NULL) {
+      grpc_metadata_batch_remove(
+          exec_ctx, initial_metadata,
+          initial_metadata->idx.named.grpc_internal_encoding_request);
     }
-    if (!GPR_BITGET(channeld->enabled_algorithms_bitset,
-                    calld->compression_algorithm)) {
+  } else if (initial_metadata->idx.named.grpc_internal_encoding_request !=
+             NULL) {
+    grpc_mdelem md =
+        initial_metadata->idx.named.grpc_internal_encoding_request->md;
+    if (!grpc_compression_algorithm_parse(GRPC_MDVALUE(md),
+                                          &calld->compression_algorithm)) {
       char *val = grpc_slice_to_c_string(GRPC_MDVALUE(md));
       gpr_log(GPR_ERROR,
-              "Invalid compression algorithm: '%s' (previously disabled). "
-              "Ignoring.",
-              val);
+              "Invalid compression algorithm: '%s' (unknown). Ignoring.", val);
       gpr_free(val);
       calld->compression_algorithm = GRPC_COMPRESS_NONE;
     }
     *has_compression_algorithm = true;
-
     grpc_metadata_batch_remove(
         exec_ctx, initial_metadata,
         initial_metadata->idx.named.grpc_internal_encoding_request);
@@ -138,13 +166,25 @@ static grpc_error *process_send_initial_metadata(
     /* If no algorithm was found in the metadata and we aren't
      * exceptionally skipping compression, fall back to the channel
      * default */
-    calld->compression_algorithm = channeld->default_compression_algorithm;
+    if (channeld->default_stream_compression_algorithm !=
+        GRPC_STREAM_COMPRESS_NONE) {
+      stream_compression_algorithm =
+          channeld->default_stream_compression_algorithm;
+      calld->compression_algorithm = GRPC_COMPRESS_NONE;
+    } else {
+      calld->compression_algorithm = channeld->default_compression_algorithm;
+    }
     *has_compression_algorithm = true;
   }
 
   grpc_error *error = GRPC_ERROR_NONE;
   /* hint compression algorithm */
-  if (calld->compression_algorithm != GRPC_COMPRESS_NONE) {
+  if (stream_compression_algorithm != GRPC_STREAM_COMPRESS_NONE) {
+    error = grpc_metadata_batch_add_tail(
+        exec_ctx, initial_metadata,
+        &calld->stream_compression_algorithm_storage,
+        grpc_stream_compression_encoding_mdelem(stream_compression_algorithm));
+  } else if (calld->compression_algorithm != GRPC_COMPRESS_NONE) {
     error = grpc_metadata_batch_add_tail(
         exec_ctx, initial_metadata, &calld->compression_algorithm_storage,
         grpc_compression_encoding_mdelem(calld->compression_algorithm));
@@ -158,6 +198,16 @@ static grpc_error *process_send_initial_metadata(
       GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(
           channeld->supported_compression_algorithms));
 
+  if (error != GRPC_ERROR_NONE) return error;
+
+  /* Do not overwrite accept-encoding header if it already presents. */
+  if (!initial_metadata->idx.named.accept_encoding) {
+    error = grpc_metadata_batch_add_tail(
+        exec_ctx, initial_metadata, &calld->accept_stream_encoding_storage,
+        GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(
+            channeld->supported_stream_compression_algorithms));
+  }
+
   return error;
 }
 
@@ -170,6 +220,18 @@ static void send_message_on_complete(grpc_exec_ctx *exec_ctx, void *arg,
                    GRPC_ERROR_REF(error));
 }
 
+static void send_message_batch_continue(grpc_exec_ctx *exec_ctx,
+                                        grpc_call_element *elem) {
+  call_data *calld = (call_data *)elem->call_data;
+  // Note: The call to grpc_call_next_op() results in yielding the
+  // call combiner, so we need to clear calld->send_message_batch
+  // before we do that.
+  grpc_transport_stream_op_batch *send_message_batch =
+      calld->send_message_batch;
+  calld->send_message_batch = NULL;
+  grpc_call_next_op(exec_ctx, elem, send_message_batch);
+}
+
 static void finish_send_message(grpc_exec_ctx *exec_ctx,
                                 grpc_call_element *elem) {
   call_data *calld = (call_data *)elem->call_data;
@@ -178,11 +240,11 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
   grpc_slice_buffer_init(&tmp);
   uint32_t send_flags =
       calld->send_message_batch->payload->send_message.send_message->flags;
-  const bool did_compress = grpc_msg_compress(
-      exec_ctx, calld->compression_algorithm, &calld->slices, &tmp);
+  bool did_compress = grpc_msg_compress(exec_ctx, calld->compression_algorithm,
+                                        &calld->slices, &tmp);
   if (did_compress) {
     if (GRPC_TRACER_ON(grpc_compression_trace)) {
-      char *algo_name;
+      const char *algo_name;
       const size_t before_size = calld->slices.length;
       const size_t after_size = tmp.length;
       const float savings_ratio = 1.0f - (float)after_size / (float)before_size;
@@ -196,7 +258,7 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
     send_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
   } else {
     if (GRPC_TRACER_ON(grpc_compression_trace)) {
-      char *algo_name;
+      const char *algo_name;
       GPR_ASSERT(grpc_compression_algorithm_name(calld->compression_algorithm,
                                                  &algo_name));
       gpr_log(GPR_DEBUG,
@@ -217,7 +279,19 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
   calld->original_send_message_on_complete =
       calld->send_message_batch->on_complete;
   calld->send_message_batch->on_complete = &calld->send_message_on_complete;
-  grpc_call_next_op(exec_ctx, elem, calld->send_message_batch);
+  send_message_batch_continue(exec_ctx, elem);
+}
+
+static void fail_send_message_batch_in_call_combiner(grpc_exec_ctx *exec_ctx,
+                                                     void *arg,
+                                                     grpc_error *error) {
+  call_data *calld = (call_data *)arg;
+  if (calld->send_message_batch != NULL) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        exec_ctx, calld->send_message_batch, GRPC_ERROR_REF(error),
+        calld->call_combiner);
+    calld->send_message_batch = NULL;
+  }
 }
 
 // Pulls a slice from the send_message byte stream and adds it to calld->slices.
@@ -237,21 +311,25 @@ static grpc_error *pull_slice_from_send_message(grpc_exec_ctx *exec_ctx,
 // If all data has been read, invokes finish_send_message().  Otherwise,
 // an async call to grpc_byte_stream_next() has been started, which will
 // eventually result in calling on_send_message_next_done().
-static grpc_error *continue_reading_send_message(grpc_exec_ctx *exec_ctx,
-                                                 grpc_call_element *elem) {
+static void continue_reading_send_message(grpc_exec_ctx *exec_ctx,
+                                          grpc_call_element *elem) {
   call_data *calld = (call_data *)elem->call_data;
   while (grpc_byte_stream_next(
       exec_ctx, calld->send_message_batch->payload->send_message.send_message,
       ~(size_t)0, &calld->on_send_message_next_done)) {
     grpc_error *error = pull_slice_from_send_message(exec_ctx, calld);
-    if (error != GRPC_ERROR_NONE) return error;
+    if (error != GRPC_ERROR_NONE) {
+      // Closure callback; does not take ownership of error.
+      fail_send_message_batch_in_call_combiner(exec_ctx, calld, error);
+      GRPC_ERROR_UNREF(error);
+      return;
+    }
     if (calld->slices.length ==
         calld->send_message_batch->payload->send_message.send_message->length) {
       finish_send_message(exec_ctx, elem);
       break;
     }
   }
-  return GRPC_ERROR_NONE;
 }
 
 // Async callback for grpc_byte_stream_next().
@@ -259,142 +337,118 @@ static void on_send_message_next_done(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error) {
   grpc_call_element *elem = (grpc_call_element *)arg;
   call_data *calld = (call_data *)elem->call_data;
-  if (error != GRPC_ERROR_NONE) goto fail;
+  if (error != GRPC_ERROR_NONE) {
+    // Closure callback; does not take ownership of error.
+    fail_send_message_batch_in_call_combiner(exec_ctx, calld, error);
+    return;
+  }
   error = pull_slice_from_send_message(exec_ctx, calld);
-  if (error != GRPC_ERROR_NONE) goto fail;
+  if (error != GRPC_ERROR_NONE) {
+    // Closure callback; does not take ownership of error.
+    fail_send_message_batch_in_call_combiner(exec_ctx, calld, error);
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
   if (calld->slices.length ==
       calld->send_message_batch->payload->send_message.send_message->length) {
     finish_send_message(exec_ctx, elem);
   } else {
-    // This will either finish reading all of the data and invoke
-    // finish_send_message(), or else it will make an async call to
-    // grpc_byte_stream_next(), which will eventually result in calling
-    // this function again.
-    error = continue_reading_send_message(exec_ctx, elem);
-    if (error != GRPC_ERROR_NONE) goto fail;
+    continue_reading_send_message(exec_ctx, elem);
   }
-  return;
-fail:
-  grpc_transport_stream_op_batch_finish_with_failure(
-      exec_ctx, calld->send_message_batch, error);
 }
 
-static void start_send_message_batch(grpc_exec_ctx *exec_ctx,
-                                     grpc_call_element *elem,
-                                     grpc_transport_stream_op_batch *batch,
-                                     bool has_compression_algorithm) {
+static void start_send_message_batch(grpc_exec_ctx *exec_ctx, void *arg,
+                                     grpc_error *unused) {
+  grpc_call_element *elem = (grpc_call_element *)arg;
   call_data *calld = (call_data *)elem->call_data;
-  if (!skip_compression(elem, batch->payload->send_message.send_message->flags,
-                        has_compression_algorithm)) {
-    calld->send_message_batch = batch;
-    // This will either finish reading all of the data and invoke
-    // finish_send_message(), or else it will make an async call to
-    // grpc_byte_stream_next(), which will eventually result in calling
-    // on_send_message_next_done().
-    grpc_error *error = continue_reading_send_message(exec_ctx, elem);
-    if (error != GRPC_ERROR_NONE) {
-      grpc_transport_stream_op_batch_finish_with_failure(
-          exec_ctx, calld->send_message_batch, error);
-    }
+  if (skip_compression(
+          elem,
+          calld->send_message_batch->payload->send_message.send_message->flags,
+          calld->send_initial_metadata_state == HAS_COMPRESSION_ALGORITHM)) {
+    send_message_batch_continue(exec_ctx, elem);
   } else {
-    /* pass control down the stack */
-    grpc_call_next_op(exec_ctx, elem, batch);
+    continue_reading_send_message(exec_ctx, elem);
   }
 }
 
 static void compress_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *batch) {
-  call_data *calld = elem->call_data;
-
+  call_data *calld = (call_data *)elem->call_data;
   GPR_TIMER_BEGIN("compress_start_transport_stream_op_batch", 0);
-
+  // Handle cancel_stream.
   if (batch->cancel_stream) {
-    // TODO(roth): As part of the upcoming call combiner work, change
-    // this to call grpc_byte_stream_shutdown() on the incoming byte
-    // stream, to cancel any in-flight calls to grpc_byte_stream_next().
-    GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
-    gpr_atm cur = gpr_atm_full_xchg(
-        &calld->send_initial_metadata_state,
-        CANCELLED_BIT | (gpr_atm)batch->payload->cancel_stream.cancel_error);
-    switch (cur) {
-      case HAS_COMPRESSION_ALGORITHM:
-      case NO_COMPRESSION_ALGORITHM:
-      case INITIAL_METADATA_UNSEEN:
-        break;
-      default:
-        if ((cur & CANCELLED_BIT) == 0) {
-          grpc_transport_stream_op_batch_finish_with_failure(
-              exec_ctx, (grpc_transport_stream_op_batch *)cur,
-              GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error));
-        } else {
-          GRPC_ERROR_UNREF((grpc_error *)(cur & ~CANCELLED_BIT));
-        }
-        break;
+    GRPC_ERROR_UNREF(calld->cancel_error);
+    calld->cancel_error =
+        GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
+    if (calld->send_message_batch != NULL) {
+      if (calld->send_initial_metadata_state == INITIAL_METADATA_UNSEEN) {
+        GRPC_CALL_COMBINER_START(
+            exec_ctx, calld->call_combiner,
+            GRPC_CLOSURE_CREATE(fail_send_message_batch_in_call_combiner, calld,
+                                grpc_schedule_on_exec_ctx),
+            GRPC_ERROR_REF(calld->cancel_error), "failing send_message op");
+      } else {
+        grpc_byte_stream_shutdown(
+            exec_ctx,
+            calld->send_message_batch->payload->send_message.send_message,
+            GRPC_ERROR_REF(calld->cancel_error));
+      }
     }
+  } else if (calld->cancel_error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(
+        exec_ctx, batch, GRPC_ERROR_REF(calld->cancel_error),
+        calld->call_combiner);
+    goto done;
   }
-
+  // Handle send_initial_metadata.
   if (batch->send_initial_metadata) {
+    GPR_ASSERT(calld->send_initial_metadata_state == INITIAL_METADATA_UNSEEN);
     bool has_compression_algorithm;
     grpc_error *error = process_send_initial_metadata(
         exec_ctx, elem,
         batch->payload->send_initial_metadata.send_initial_metadata,
         &has_compression_algorithm);
     if (error != GRPC_ERROR_NONE) {
-      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch,
-                                                         error);
-      return;
+      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch, error,
+                                                         calld->call_combiner);
+      goto done;
     }
-    gpr_atm cur;
-  retry_send_im:
-    cur = gpr_atm_acq_load(&calld->send_initial_metadata_state);
-    GPR_ASSERT(cur != HAS_COMPRESSION_ALGORITHM &&
-               cur != NO_COMPRESSION_ALGORITHM);
-    if ((cur & CANCELLED_BIT) == 0) {
-      if (!gpr_atm_rel_cas(&calld->send_initial_metadata_state, cur,
-                           has_compression_algorithm
-                               ? HAS_COMPRESSION_ALGORITHM
-                               : NO_COMPRESSION_ALGORITHM)) {
-        goto retry_send_im;
-      }
-      if (cur != INITIAL_METADATA_UNSEEN) {
-        start_send_message_batch(exec_ctx, elem,
-                                 (grpc_transport_stream_op_batch *)cur,
-                                 has_compression_algorithm);
-      }
+    calld->send_initial_metadata_state = has_compression_algorithm
+                                             ? HAS_COMPRESSION_ALGORITHM
+                                             : NO_COMPRESSION_ALGORITHM;
+    // If we had previously received a batch containing a send_message op,
+    // handle it now.  Note that we need to re-enter the call combiner
+    // for this, since we can't send two batches down while holding the
+    // call combiner, since the connected_channel filter (at the bottom of
+    // the call stack) will release the call combiner for each batch it sees.
+    if (calld->send_message_batch != NULL) {
+      GRPC_CALL_COMBINER_START(
+          exec_ctx, calld->call_combiner,
+          &calld->start_send_message_batch_in_call_combiner, GRPC_ERROR_NONE,
+          "starting send_message after send_initial_metadata");
     }
   }
+  // Handle send_message.
   if (batch->send_message) {
-    gpr_atm cur;
-  retry_send:
-    cur = gpr_atm_acq_load(&calld->send_initial_metadata_state);
-    switch (cur) {
-      case INITIAL_METADATA_UNSEEN:
-        if (!gpr_atm_rel_cas(&calld->send_initial_metadata_state, cur,
-                             (gpr_atm)batch)) {
-          goto retry_send;
-        }
-        break;
-      case HAS_COMPRESSION_ALGORITHM:
-      case NO_COMPRESSION_ALGORITHM:
-        start_send_message_batch(exec_ctx, elem, batch,
-                                 cur == HAS_COMPRESSION_ALGORITHM);
-        break;
-      default:
-        if (cur & CANCELLED_BIT) {
-          grpc_transport_stream_op_batch_finish_with_failure(
-              exec_ctx, batch,
-              GRPC_ERROR_REF((grpc_error *)(cur & ~CANCELLED_BIT)));
-        } else {
-          /* >1 send_message concurrently */
-          GPR_UNREACHABLE_CODE(break);
-        }
+    GPR_ASSERT(calld->send_message_batch == NULL);
+    calld->send_message_batch = batch;
+    // If we have not yet seen send_initial_metadata, then we have to
+    // wait.  We save the batch in calld and then drop the call
+    // combiner, which we'll have to pick up again later when we get
+    // send_initial_metadata.
+    if (calld->send_initial_metadata_state == INITIAL_METADATA_UNSEEN) {
+      GRPC_CALL_COMBINER_STOP(
+          exec_ctx, calld->call_combiner,
+          "send_message batch pending send_initial_metadata");
+      goto done;
     }
+    start_send_message_batch(exec_ctx, elem, GRPC_ERROR_NONE);
   } else {
-    /* pass control down the stack */
+    // Pass control down the stack.
     grpc_call_next_op(exec_ctx, elem, batch);
   }
-
+done:
   GPR_TIMER_END("compress_start_transport_stream_op_batch", 0);
 }
 
@@ -402,16 +456,16 @@ static void compress_start_transport_stream_op_batch(
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
-  /* grab pointers to our data from the call element */
-  call_data *calld = elem->call_data;
-
-  /* initialize members */
+  call_data *calld = (call_data *)elem->call_data;
+  calld->call_combiner = args->call_combiner;
+  calld->cancel_error = GRPC_ERROR_NONE;
   grpc_slice_buffer_init(&calld->slices);
+  GRPC_CLOSURE_INIT(&calld->start_send_message_batch_in_call_combiner,
+                    start_send_message_batch, elem, grpc_schedule_on_exec_ctx);
   GRPC_CLOSURE_INIT(&calld->on_send_message_next_done,
                     on_send_message_next_done, elem, grpc_schedule_on_exec_ctx);
   GRPC_CLOSURE_INIT(&calld->send_message_on_complete, send_message_on_complete,
                     elem, grpc_schedule_on_exec_ctx);
-
   return GRPC_ERROR_NONE;
 }
 
@@ -419,22 +473,18 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *ignored) {
-  /* grab pointers to our data from the call element */
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   grpc_slice_buffer_destroy_internal(exec_ctx, &calld->slices);
-  gpr_atm imstate =
-      gpr_atm_no_barrier_load(&calld->send_initial_metadata_state);
-  if (imstate & CANCELLED_BIT) {
-    GRPC_ERROR_UNREF((grpc_error *)(imstate & ~CANCELLED_BIT));
-  }
+  GRPC_ERROR_UNREF(calld->cancel_error);
 }
 
 /* Constructor for channel_data */
 static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_channel_element *elem,
                                      grpc_channel_element_args *args) {
-  channel_data *channeld = elem->channel_data;
+  channel_data *channeld = (channel_data *)elem->channel_data;
 
+  /* Configuration for message compression */
   channeld->enabled_algorithms_bitset =
       grpc_channel_args_compression_algorithm_get_states(args->channel_args);
 
@@ -449,16 +499,32 @@ static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
     channeld->default_compression_algorithm = GRPC_COMPRESS_NONE;
   }
 
-  channeld->supported_compression_algorithms = 1; /* always support identity */
-  for (grpc_compression_algorithm algo_idx = 1;
-       algo_idx < GRPC_COMPRESS_ALGORITHMS_COUNT; ++algo_idx) {
-    /* skip disabled algorithms */
-    if (!GPR_BITGET(channeld->enabled_algorithms_bitset, algo_idx)) {
-      continue;
-    }
-    channeld->supported_compression_algorithms |= 1u << algo_idx;
+  channeld->supported_compression_algorithms =
+      (((1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1) &
+       channeld->enabled_algorithms_bitset) |
+      1u;
+
+  /* Configuration for stream compression */
+  channeld->enabled_stream_compression_algorithms_bitset =
+      grpc_channel_args_stream_compression_algorithm_get_states(
+          args->channel_args);
+
+  channeld->default_stream_compression_algorithm =
+      grpc_channel_args_get_stream_compression_algorithm(args->channel_args);
+
+  if (!GPR_BITGET(channeld->enabled_stream_compression_algorithms_bitset,
+                  channeld->default_stream_compression_algorithm)) {
+    gpr_log(GPR_DEBUG,
+            "stream compression algorithm %d not enabled: switching to none",
+            channeld->default_stream_compression_algorithm);
+    channeld->default_stream_compression_algorithm = GRPC_STREAM_COMPRESS_NONE;
   }
 
+  channeld->supported_stream_compression_algorithms =
+      (((1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) - 1) &
+       channeld->enabled_stream_compression_algorithms_bitset) |
+      1u;
+
   GPR_ASSERT(!args->is_last);
   return GRPC_ERROR_NONE;
 }
@@ -477,6 +543,5 @@ const grpc_channel_filter grpc_message_compress_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
-    "compress"};
+    "message_compress"};
diff --git a/src/core/ext/filters/http/server/http_server_filter.c b/src/core/ext/filters/http/server/http_server_filter.c
index b145f12aff..03958136b4 100644
--- a/src/core/ext/filters/http/server/http_server_filter.c
+++ b/src/core/ext/filters/http/server/http_server_filter.c
@@ -32,6 +32,8 @@
 #define EXPECTED_CONTENT_TYPE_LENGTH sizeof(EXPECTED_CONTENT_TYPE) - 1
 
 typedef struct call_data {
+  grpc_call_combiner *call_combiner;
+
   grpc_linked_mdelem status;
   grpc_linked_mdelem content_type;
 
@@ -81,18 +83,18 @@ static grpc_error *server_filter_outgoing_metadata(grpc_exec_ctx *exec_ctx,
 }
 
 static void add_error(const char *error_name, grpc_error **cumulative,
-                      grpc_error *new) {
-  if (new == GRPC_ERROR_NONE) return;
+                      grpc_error *new_err) {
+  if (new_err == GRPC_ERROR_NONE) return;
   if (*cumulative == GRPC_ERROR_NONE) {
     *cumulative = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_name);
   }
-  *cumulative = grpc_error_add_child(*cumulative, new);
+  *cumulative = grpc_error_add_child(*cumulative, new_err);
 }
 
 static grpc_error *server_filter_incoming_metadata(grpc_exec_ctx *exec_ctx,
                                                    grpc_call_element *elem,
                                                    grpc_metadata_batch *b) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   grpc_error *error = GRPC_ERROR_NONE;
   static const char *error_name = "Failed processing incoming headers";
 
@@ -261,8 +263,8 @@ static grpc_error *server_filter_incoming_metadata(grpc_exec_ctx *exec_ctx,
 
 static void hs_on_recv(grpc_exec_ctx *exec_ctx, void *user_data,
                        grpc_error *err) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (err == GRPC_ERROR_NONE) {
     err = server_filter_incoming_metadata(exec_ctx, elem,
                                           calld->recv_initial_metadata);
@@ -274,14 +276,18 @@ static void hs_on_recv(grpc_exec_ctx *exec_ctx, void *user_data,
 
 static void hs_on_complete(grpc_exec_ctx *exec_ctx, void *user_data,
                            grpc_error *err) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   /* Call recv_message_ready if we got the payload via the path field */
   if (calld->seen_path_with_query && calld->recv_message_ready != NULL) {
     *calld->pp_recv_message = calld->payload_bin_delivered
                                   ? NULL
                                   : (grpc_byte_stream *)&calld->read_stream;
-    GRPC_CLOSURE_RUN(exec_ctx, calld->recv_message_ready, GRPC_ERROR_REF(err));
+    // Re-enter call combiner for recv_message_ready, since the surface
+    // code will release the call combiner for each callback it receives.
+    GRPC_CALL_COMBINER_START(exec_ctx, calld->call_combiner,
+                             calld->recv_message_ready, GRPC_ERROR_REF(err),
+                             "resuming recv_message_ready from on_complete");
     calld->recv_message_ready = NULL;
     calld->payload_bin_delivered = true;
   }
@@ -290,20 +296,25 @@ static void hs_on_complete(grpc_exec_ctx *exec_ctx, void *user_data,
 
 static void hs_recv_message_ready(grpc_exec_ctx *exec_ctx, void *user_data,
                                   grpc_error *err) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (calld->seen_path_with_query) {
-    /* do nothing. This is probably a GET request, and payload will be returned
-    in hs_on_complete callback. */
+    // Do nothing. This is probably a GET request, and payload will be
+    // returned in hs_on_complete callback.
+    // Note that we release the call combiner here, so that other
+    // callbacks can run.
+    GRPC_CALL_COMBINER_STOP(exec_ctx, calld->call_combiner,
+                            "pausing recv_message_ready until on_complete");
   } else {
     GRPC_CLOSURE_RUN(exec_ctx, calld->recv_message_ready, GRPC_ERROR_REF(err));
   }
 }
 
-static void hs_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                         grpc_transport_stream_op_batch *op) {
+static grpc_error *hs_mutate_op(grpc_exec_ctx *exec_ctx,
+                                grpc_call_element *elem,
+                                grpc_transport_stream_op_batch *op) {
   /* grab pointers to our data from the call element */
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   if (op->send_initial_metadata) {
     grpc_error *error = GRPC_ERROR_NONE;
@@ -323,10 +334,7 @@ static void hs_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
               server_filter_outgoing_metadata(
                   exec_ctx, elem,
                   op->payload->send_initial_metadata.send_initial_metadata));
-    if (error != GRPC_ERROR_NONE) {
-      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, op, error);
-      return;
-    }
+    if (error != GRPC_ERROR_NONE) return error;
   }
 
   if (op->recv_initial_metadata) {
@@ -359,21 +367,25 @@ static void hs_mutate_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_error *error = server_filter_outgoing_metadata(
         exec_ctx, elem,
         op->payload->send_trailing_metadata.send_trailing_metadata);
-    if (error != GRPC_ERROR_NONE) {
-      grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, op, error);
-      return;
-    }
+    if (error != GRPC_ERROR_NONE) return error;
   }
+
+  return GRPC_ERROR_NONE;
 }
 
-static void hs_start_transport_op(grpc_exec_ctx *exec_ctx,
-                                  grpc_call_element *elem,
-                                  grpc_transport_stream_op_batch *op) {
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
-  GPR_TIMER_BEGIN("hs_start_transport_op", 0);
-  hs_mutate_op(exec_ctx, elem, op);
-  grpc_call_next_op(exec_ctx, elem, op);
-  GPR_TIMER_END("hs_start_transport_op", 0);
+static void hs_start_transport_stream_op_batch(
+    grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+    grpc_transport_stream_op_batch *op) {
+  call_data *calld = (call_data *)elem->call_data;
+  GPR_TIMER_BEGIN("hs_start_transport_stream_op_batch", 0);
+  grpc_error *error = hs_mutate_op(exec_ctx, elem, op);
+  if (error != GRPC_ERROR_NONE) {
+    grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, op, error,
+                                                       calld->call_combiner);
+  } else {
+    grpc_call_next_op(exec_ctx, elem, op);
+  }
+  GPR_TIMER_END("hs_start_transport_stream_op_batch", 0);
 }
 
 /* Constructor for call_data */
@@ -381,8 +393,9 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
   /* grab pointers to our data from the call element */
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   /* initialize members */
+  calld->call_combiner = args->call_combiner;
   GRPC_CLOSURE_INIT(&calld->hs_on_recv, hs_on_recv, elem,
                     grpc_schedule_on_exec_ctx);
   GRPC_CLOSURE_INIT(&calld->hs_on_complete, hs_on_complete, elem,
@@ -397,7 +410,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *ignored) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   grpc_slice_buffer_destroy_internal(exec_ctx, &calld->read_slice_buffer);
 }
 
@@ -414,7 +427,7 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
 
 const grpc_channel_filter grpc_http_server_filter = {
-    hs_start_transport_op,
+    hs_start_transport_stream_op_batch,
     grpc_channel_next_op,
     sizeof(call_data),
     init_call_elem,
@@ -423,6 +436,5 @@ const grpc_channel_filter grpc_http_server_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "http-server"};
diff --git a/src/core/ext/filters/load_reporting/load_reporting_filter.c b/src/core/ext/filters/load_reporting/server_load_reporting_filter.c
index 08474efb2e..ca8a3b2a13 100644
--- a/src/core/ext/filters/load_reporting/load_reporting_filter.c
+++ b/src/core/ext/filters/load_reporting/server_load_reporting_filter.c
@@ -24,8 +24,8 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/ext/filters/load_reporting/load_reporting.h"
-#include "src/core/ext/filters/load_reporting/load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
@@ -56,8 +56,8 @@ typedef struct channel_data {
 
 static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data,
                                 grpc_error *err) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   if (err == GRPC_ERROR_NONE) {
     if (calld->recv_initial_metadata->idx.named.path != NULL) {
@@ -88,7 +88,7 @@ static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data,
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   calld->id = (intptr_t)args->call_stack;
   GRPC_CLOSURE_INIT(&calld->on_initial_md_ready, on_initial_md_ready, elem,
                     grpc_schedule_on_exec_ctx);
@@ -111,7 +111,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *ignored) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   /* TODO(dgq): do something with the data
   channel_data *chand = elem->channel_data;
@@ -141,7 +141,7 @@ static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_channel_element_args *args) {
   GPR_ASSERT(!args->is_last);
 
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   chand->id = (intptr_t)args->channel_stack;
 
   /* TODO(dgq): do something with the data
@@ -176,8 +176,8 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 static grpc_filtered_mdelem lr_trailing_md_filter(grpc_exec_ctx *exec_ctx,
                                                   void *user_data,
                                                   grpc_mdelem md) {
-  grpc_call_element *elem = user_data;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)user_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (grpc_slice_eq(GRPC_MDKEY(md), GRPC_MDSTR_LB_COST_BIN)) {
     calld->trailing_md_string = GRPC_MDVALUE(md);
     return GRPC_FILTERED_REMOVE();
@@ -189,7 +189,7 @@ static void lr_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *op) {
   GPR_TIMER_BEGIN("lr_start_transport_stream_op_batch", 0);
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   if (op->recv_initial_metadata) {
     /* substitute our callback for the higher callback */
@@ -213,7 +213,7 @@ static void lr_start_transport_stream_op_batch(
   GPR_TIMER_END("lr_start_transport_stream_op_batch", 0);
 }
 
-const grpc_channel_filter grpc_load_reporting_filter = {
+const grpc_channel_filter grpc_server_load_reporting_filter = {
     lr_start_transport_stream_op_batch,
     grpc_channel_next_op,
     sizeof(call_data),
@@ -223,6 +223,5 @@ const grpc_channel_filter grpc_load_reporting_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "load_reporting"};
diff --git a/src/core/ext/filters/load_reporting/load_reporting_filter.h b/src/core/ext/filters/load_reporting/server_load_reporting_filter.h
index 1a5424e43a..9527868c9f 100644
--- a/src/core/ext/filters/load_reporting/load_reporting_filter.h
+++ b/src/core/ext/filters/load_reporting/server_load_reporting_filter.h
@@ -16,12 +16,13 @@
  *
  */
 
-#ifndef GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_FILTER_H
-#define GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_FILTER_H
+#ifndef GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_FILTER_H
+#define GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_FILTER_H
 
-#include "src/core/ext/filters/load_reporting/load_reporting.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
 #include "src/core/lib/channel/channel_stack.h"
 
-extern const grpc_channel_filter grpc_load_reporting_filter;
+extern const grpc_channel_filter grpc_server_load_reporting_filter;
 
-#endif /* GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_FILTER_H */
+#endif /* GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_FILTER_H \
+          */
diff --git a/src/core/ext/filters/load_reporting/load_reporting.c b/src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
index 9745763c91..2486ead427 100644
--- a/src/core/ext/filters/load_reporting/load_reporting.c
+++ b/src/core/ext/filters/load_reporting/server_load_reporting_plugin.c
@@ -25,8 +25,8 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/ext/filters/load_reporting/load_reporting.h"
-#include "src/core/ext/filters/load_reporting/load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
 #include "src/core/lib/channel/channel_stack_builder.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/surface/call.h"
@@ -37,28 +37,34 @@ static bool is_load_reporting_enabled(const grpc_channel_args *a) {
       grpc_channel_args_find(a, GRPC_ARG_ENABLE_LOAD_REPORTING), false);
 }
 
-static bool maybe_add_load_reporting_filter(grpc_exec_ctx *exec_ctx,
-                                            grpc_channel_stack_builder *builder,
-                                            void *arg) {
+static bool maybe_add_server_load_reporting_filter(
+    grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
-  if (is_load_reporting_enabled(args)) {
-    return grpc_channel_stack_builder_prepend_filter(
-        builder, (const grpc_channel_filter *)arg, NULL, NULL);
+  const grpc_channel_filter *filter = (const grpc_channel_filter *)arg;
+  grpc_channel_stack_builder_iterator *it =
+      grpc_channel_stack_builder_iterator_find(builder, filter->name);
+  const bool already_has_load_reporting_filter =
+      !grpc_channel_stack_builder_iterator_is_end(it);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  if (is_load_reporting_enabled(args) && !already_has_load_reporting_filter) {
+    return grpc_channel_stack_builder_prepend_filter(builder, filter, NULL,
+                                                     NULL);
   }
   return true;
 }
 
 grpc_arg grpc_load_reporting_enable_arg() {
-  return grpc_channel_arg_integer_create(GRPC_ARG_ENABLE_LOAD_REPORTING, 1);
+  return grpc_channel_arg_integer_create((char *)GRPC_ARG_ENABLE_LOAD_REPORTING,
+                                         1);
 }
 
 /* Plugin registration */
 
-void grpc_load_reporting_plugin_init(void) {
+void grpc_server_load_reporting_plugin_init(void) {
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
-                                   maybe_add_load_reporting_filter,
-                                   (void *)&grpc_load_reporting_filter);
+                                   maybe_add_server_load_reporting_filter,
+                                   (void *)&grpc_server_load_reporting_filter);
 }
 
-void grpc_load_reporting_plugin_shutdown() {}
+void grpc_server_load_reporting_plugin_shutdown() {}
diff --git a/src/core/ext/filters/load_reporting/load_reporting.h b/src/core/ext/filters/load_reporting/server_load_reporting_plugin.h
index fc04d2826a..65a6d0900e 100644
--- a/src/core/ext/filters/load_reporting/load_reporting.h
+++ b/src/core/ext/filters/load_reporting/server_load_reporting_plugin.h
@@ -16,8 +16,8 @@
  *
  */
 
-#ifndef GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_H
-#define GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_H
+#ifndef GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H
+#define GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H
 
 #include <grpc/impl/codegen/grpc_types.h>
 
@@ -55,4 +55,5 @@ typedef struct grpc_load_reporting_call_data {
 /** Return a \a grpc_arg enabling load reporting */
 grpc_arg grpc_load_reporting_enable_arg();
 
-#endif /* GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_LOAD_REPORTING_H */
+#endif /* GRPC_CORE_EXT_FILTERS_LOAD_REPORTING_SERVER_LOAD_REPORTING_PLUGIN_H \
+          */
diff --git a/src/core/ext/filters/max_age/max_age_filter.c b/src/core/ext/filters/max_age/max_age_filter.c
index 7d748b9c32..0ac803ed41 100644
--- a/src/core/ext/filters/max_age/max_age_filter.c
+++ b/src/core/ext/filters/max_age/max_age_filter.c
@@ -273,7 +273,7 @@ static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
                               const grpc_call_final_info* final_info,
                               grpc_closure* ignored) {
-  channel_data* chand = elem->channel_data;
+  channel_data* chand = (channel_data*)elem->channel_data;
   decrease_call_count(exec_ctx, chand);
 }
 
@@ -391,7 +391,6 @@ const grpc_channel_filter grpc_max_age_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "max_age"};
 
@@ -403,7 +402,7 @@ static bool maybe_add_max_age_filter(grpc_exec_ctx* exec_ctx,
   bool enable =
       grpc_channel_arg_get_integer(
           grpc_channel_args_find(channel_args, GRPC_ARG_MAX_CONNECTION_AGE_MS),
-          MAX_CONNECTION_AGE_INTEGER_OPTIONS) != INT_MAX &&
+          MAX_CONNECTION_AGE_INTEGER_OPTIONS) != INT_MAX ||
       grpc_channel_arg_get_integer(
           grpc_channel_args_find(channel_args, GRPC_ARG_MAX_CONNECTION_IDLE_MS),
           MAX_CONNECTION_IDLE_INTEGER_OPTIONS) != INT_MAX;
diff --git a/src/core/ext/filters/message_size/message_size_filter.c b/src/core/ext/filters/message_size/message_size_filter.c
index 846c7df69a..47763b1deb 100644
--- a/src/core/ext/filters/message_size/message_size_filter.c
+++ b/src/core/ext/filters/message_size/message_size_filter.c
@@ -68,6 +68,7 @@ static void* message_size_limits_create_from_json(const grpc_json* json) {
 }
 
 typedef struct call_data {
+  grpc_call_combiner* call_combiner;
   message_size_limits limits;
   // Receive closures are chained: we inject this closure as the
   // recv_message_ready up-call on transport_stream_op, and remember to
@@ -131,7 +132,8 @@ static void start_transport_stream_op_batch(
         exec_ctx, op,
         grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(message_string),
                            GRPC_ERROR_INT_GRPC_STATUS,
-                           GRPC_STATUS_RESOURCE_EXHAUSTED));
+                           GRPC_STATUS_RESOURCE_EXHAUSTED),
+        calld->call_combiner);
     gpr_free(message_string);
     return;
   }
@@ -152,6 +154,7 @@ static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
                                   const grpc_call_element_args* args) {
   channel_data* chand = (channel_data*)elem->channel_data;
   call_data* calld = (call_data*)elem->call_data;
+  calld->call_combiner = args->call_combiner;
   calld->next_recv_message_ready = NULL;
   GRPC_CLOSURE_INIT(&calld->recv_message_ready, recv_message_ready, elem,
                     grpc_schedule_on_exec_ctx);
@@ -259,7 +262,6 @@ const grpc_channel_filter grpc_message_size_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "message_size"};
 
diff --git a/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.c b/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.c
index b4d2cb4b8c..c8b2fe5f99 100644
--- a/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.c
+++ b/src/core/ext/filters/workarounds/workaround_cronet_compression_filter.c
@@ -177,7 +177,6 @@ const grpc_channel_filter grpc_workaround_cronet_compression_filter = {
     0,
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "workaround_cronet_compression"};
 
diff --git a/src/core/ext/transport/chttp2/client/chttp2_connector.c b/src/core/ext/transport/chttp2/client/chttp2_connector.c
index 983691bbad..202bcd47f5 100644
--- a/src/core/ext/transport/chttp2/client/chttp2_connector.c
+++ b/src/core/ext/transport/chttp2/client/chttp2_connector.c
@@ -93,8 +93,8 @@ static void chttp2_connector_shutdown(grpc_exec_ctx *exec_ctx,
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
                               grpc_error *error) {
-  grpc_handshaker_args *args = arg;
-  chttp2_connector *c = args->user_data;
+  grpc_handshaker_args *args = (grpc_handshaker_args *)arg;
+  chttp2_connector *c = (chttp2_connector *)args->user_data;
   gpr_mu_lock(&c->mu);
   if (error != GRPC_ERROR_NONE || c->shutdown) {
     if (error == GRPC_ERROR_NONE) {
@@ -143,7 +143,7 @@ static void start_handshake_locked(grpc_exec_ctx *exec_ctx,
 }
 
 static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  chttp2_connector *c = arg;
+  chttp2_connector *c = (chttp2_connector *)arg;
   gpr_mu_lock(&c->mu);
   GPR_ASSERT(c->connecting);
   c->connecting = false;
@@ -161,7 +161,7 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
       grpc_endpoint_shutdown(exec_ctx, c->endpoint, GRPC_ERROR_REF(error));
     }
     gpr_mu_unlock(&c->mu);
-    chttp2_connector_unref(exec_ctx, arg);
+    chttp2_connector_unref(exec_ctx, (grpc_connector *)arg);
   } else {
     GPR_ASSERT(c->endpoint != NULL);
     start_handshake_locked(exec_ctx, c);
@@ -198,7 +198,7 @@ static const grpc_connector_vtable chttp2_connector_vtable = {
     chttp2_connector_connect};
 
 grpc_connector *grpc_chttp2_connector_create() {
-  chttp2_connector *c = gpr_zalloc(sizeof(*c));
+  chttp2_connector *c = (chttp2_connector *)gpr_zalloc(sizeof(*c));
   c->base.vtable = &chttp2_connector_vtable;
   gpr_mu_init(&c->mu);
   gpr_ref_init(&c->refs, 1);
diff --git a/src/core/ext/transport/chttp2/client/insecure/channel_create.c b/src/core/ext/transport/chttp2/client/insecure/channel_create.c
index cccb347bf1..6410a6043d 100644
--- a/src/core/ext/transport/chttp2/client/insecure/channel_create.c
+++ b/src/core/ext/transport/chttp2/client/insecure/channel_create.c
@@ -55,7 +55,7 @@ static grpc_channel *client_channel_factory_create_channel(
   }
   // Add channel arg containing the server URI.
   grpc_arg arg = grpc_channel_arg_string_create(
-      GRPC_ARG_SERVER_URI,
+      (char *)GRPC_ARG_SERVER_URI,
       grpc_resolver_factory_add_default_prefix_if_needed(exec_ctx, target));
   const char *to_remove[] = {GRPC_ARG_SERVER_URI};
   grpc_channel_args *new_args =
diff --git a/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c b/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
index 0346d50b6c..dd88136f7b 100644
--- a/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
+++ b/src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
@@ -42,7 +42,7 @@ grpc_channel *grpc_insecure_channel_create_from_fd(
                  (target, fd, args));
 
   grpc_arg default_authority_arg = grpc_channel_arg_string_create(
-      GRPC_ARG_DEFAULT_AUTHORITY, "test.authority");
+      (char *)GRPC_ARG_DEFAULT_AUTHORITY, (char *)"test.authority");
   grpc_channel_args *final_args =
       grpc_channel_args_copy_and_add(args, &default_authority_arg, 1);
 
diff --git a/src/core/ext/transport/chttp2/server/chttp2_server.c b/src/core/ext/transport/chttp2/server/chttp2_server.c
index f207155900..60244e163b 100644
--- a/src/core/ext/transport/chttp2/server/chttp2_server.c
+++ b/src/core/ext/transport/chttp2/server/chttp2_server.c
@@ -52,7 +52,7 @@ typedef struct {
 } server_state;
 
 typedef struct {
-  server_state *server_state;
+  server_state *svr_state;
   grpc_pollset *accepting_pollset;
   grpc_tcp_server_acceptor *acceptor;
   grpc_handshake_manager *handshake_mgr;
@@ -60,10 +60,11 @@ typedef struct {
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
                               grpc_error *error) {
-  grpc_handshaker_args *args = arg;
-  server_connection_state *connection_state = args->user_data;
-  gpr_mu_lock(&connection_state->server_state->mu);
-  if (error != GRPC_ERROR_NONE || connection_state->server_state->shutdown) {
+  grpc_handshaker_args *args = (grpc_handshaker_args *)arg;
+  server_connection_state *connection_state =
+      (server_connection_state *)args->user_data;
+  gpr_mu_lock(&connection_state->svr_state->mu);
+  if (error != GRPC_ERROR_NONE || connection_state->svr_state->shutdown) {
     const char *error_str = grpc_error_string(error);
     gpr_log(GPR_DEBUG, "Handshaking failed: %s", error_str);
 
@@ -88,7 +89,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
       grpc_transport *transport =
           grpc_create_chttp2_transport(exec_ctx, args->args, args->endpoint, 0);
       grpc_server_setup_transport(
-          exec_ctx, connection_state->server_state->server, transport,
+          exec_ctx, connection_state->svr_state->server, transport,
           connection_state->accepting_pollset, args->args);
       grpc_chttp2_transport_start_reading(exec_ctx, transport,
                                           args->read_buffer);
@@ -96,11 +97,11 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
     }
   }
   grpc_handshake_manager_pending_list_remove(
-      &connection_state->server_state->pending_handshake_mgrs,
+      &connection_state->svr_state->pending_handshake_mgrs,
       connection_state->handshake_mgr);
-  gpr_mu_unlock(&connection_state->server_state->mu);
+  gpr_mu_unlock(&connection_state->svr_state->mu);
   grpc_handshake_manager_destroy(exec_ctx, connection_state->handshake_mgr);
-  grpc_tcp_server_unref(exec_ctx, connection_state->server_state->tcp_server);
+  grpc_tcp_server_unref(exec_ctx, connection_state->svr_state->tcp_server);
   gpr_free(connection_state->acceptor);
   gpr_free(connection_state);
 }
@@ -108,7 +109,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
 static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
                       grpc_pollset *accepting_pollset,
                       grpc_tcp_server_acceptor *acceptor) {
-  server_state *state = arg;
+  server_state *state = (server_state *)arg;
   gpr_mu_lock(&state->mu);
   if (state->shutdown) {
     gpr_mu_unlock(&state->mu);
@@ -123,8 +124,8 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
   gpr_mu_unlock(&state->mu);
   grpc_tcp_server_ref(state->tcp_server);
   server_connection_state *connection_state =
-      gpr_malloc(sizeof(*connection_state));
-  connection_state->server_state = state;
+      (server_connection_state *)gpr_malloc(sizeof(*connection_state));
+  connection_state->svr_state = state;
   connection_state->accepting_pollset = accepting_pollset;
   connection_state->acceptor = acceptor;
   connection_state->handshake_mgr = handshake_mgr;
@@ -143,7 +144,7 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
 static void server_start_listener(grpc_exec_ctx *exec_ctx, grpc_server *server,
                                   void *arg, grpc_pollset **pollsets,
                                   size_t pollset_count) {
-  server_state *state = arg;
+  server_state *state = (server_state *)arg;
   gpr_mu_lock(&state->mu);
   state->shutdown = false;
   gpr_mu_unlock(&state->mu);
@@ -153,7 +154,7 @@ static void server_start_listener(grpc_exec_ctx *exec_ctx, grpc_server *server,
 
 static void tcp_server_shutdown_complete(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error) {
-  server_state *state = arg;
+  server_state *state = (server_state *)arg;
   /* ensure all threads have unlocked */
   gpr_mu_lock(&state->mu);
   grpc_closure *destroy_done = state->server_destroy_listener_done;
@@ -178,7 +179,7 @@ static void tcp_server_shutdown_complete(grpc_exec_ctx *exec_ctx, void *arg,
 static void server_destroy_listener(grpc_exec_ctx *exec_ctx,
                                     grpc_server *server, void *arg,
                                     grpc_closure *destroy_done) {
-  server_state *state = arg;
+  server_state *state = (server_state *)arg;
   gpr_mu_lock(&state->mu);
   state->shutdown = true;
   state->server_destroy_listener_done = destroy_done;
@@ -200,6 +201,7 @@ grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
   grpc_error *err = GRPC_ERROR_NONE;
   server_state *state = NULL;
   grpc_error **errors = NULL;
+  size_t naddrs = 0;
 
   *port_num = -1;
 
@@ -208,7 +210,7 @@ grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
   if (err != GRPC_ERROR_NONE) {
     goto error;
   }
-  state = gpr_zalloc(sizeof(*state));
+  state = (server_state *)gpr_zalloc(sizeof(*state));
   GRPC_CLOSURE_INIT(&state->tcp_server_shutdown_complete,
                     tcp_server_shutdown_complete, state,
                     grpc_schedule_on_exec_ctx);
@@ -224,8 +226,8 @@ grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
   state->shutdown = true;
   gpr_mu_init(&state->mu);
 
-  const size_t naddrs = resolved->naddrs;
-  errors = gpr_malloc(sizeof(*errors) * naddrs);
+  naddrs = resolved->naddrs;
+  errors = (grpc_error **)gpr_malloc(sizeof(*errors) * naddrs);
   for (i = 0; i < naddrs; i++) {
     errors[i] =
         grpc_tcp_server_add_port(tcp_server, &resolved->addrs[i], &port_temp);
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_plugin.c b/src/core/ext/transport/chttp2/transport/chttp2_plugin.c
index 78551df9c3..6d09953830 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_plugin.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_plugin.c
@@ -23,6 +23,7 @@
 void grpc_chttp2_plugin_init(void) {
   grpc_register_tracer(&grpc_http_trace);
   grpc_register_tracer(&grpc_flowctl_trace);
+  grpc_register_tracer(&grpc_trace_http2_stream_state);
 #ifndef NDEBUG
   grpc_register_tracer(&grpc_trace_chttp2_refcount);
 #endif
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 7bad188f4e..acf49632ff 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -34,6 +34,7 @@
 #include "src/core/ext/transport/chttp2/transport/varint.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/compression/stream_compression.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/timer.h"
@@ -63,6 +64,11 @@
 #define DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS false
 #define KEEPALIVE_TIME_BACKOFF_MULTIPLIER 2
 
+#define DEFAULT_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
+#define DEFAULT_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
+#define DEFAULT_MAX_PINGS_BETWEEN_DATA 0                      /* unlimited */
+#define DEFAULT_MAX_PING_STRIKES 2
+
 static int g_default_client_keepalive_time_ms =
     DEFAULT_CLIENT_KEEPALIVE_TIME_MS;
 static int g_default_client_keepalive_timeout_ms =
@@ -74,6 +80,13 @@ static int g_default_server_keepalive_timeout_ms =
 static bool g_default_keepalive_permit_without_calls =
     DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
 
+static int g_default_min_sent_ping_interval_without_data_ms =
+    DEFAULT_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS;
+static int g_default_min_recv_ping_interval_without_data_ms =
+    DEFAULT_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS;
+static int g_default_max_pings_without_data = DEFAULT_MAX_PINGS_BETWEEN_DATA;
+static int g_default_max_ping_strikes = DEFAULT_MAX_PING_STRIKES;
+
 #define MAX_CLIENT_STREAM_ID 0x7fffffffu
 grpc_tracer_flag grpc_http_trace = GRPC_TRACER_INITIALIZER(false, "http");
 grpc_tracer_flag grpc_flowctl_trace = GRPC_TRACER_INITIALIZER(false, "flowctl");
@@ -83,8 +96,6 @@ grpc_tracer_flag grpc_trace_chttp2_refcount =
     GRPC_TRACER_INITIALIZER(false, "chttp2_refcount");
 #endif
 
-static const grpc_transport_vtable vtable;
-
 /* forward declarations of various callbacks that we'll build closures around */
 static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *t,
                                       grpc_error *error);
@@ -145,18 +156,14 @@ static void finish_bdp_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
 
 static void cancel_pings(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                          grpc_error *error);
-static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
-                             grpc_chttp2_ping_type ping_type,
-                             grpc_closure *on_initiate,
-                             grpc_closure *on_complete);
+static void send_ping_locked(
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
+    grpc_chttp2_ping_type ping_type, grpc_closure *on_initiate,
+    grpc_closure *on_complete,
+    grpc_chttp2_initiate_write_reason initiate_write_reason);
 static void retry_initiate_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                        grpc_error *error);
 
-#define DEFAULT_MIN_TIME_BETWEEN_PINGS_MS 0
-#define DEFAULT_MAX_PINGS_BETWEEN_DATA 3
-#define DEFAULT_MAX_PING_STRIKES 2
-#define DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS 300000 /* 5 minutes */
-
 /** keepalive-relevant functions */
 static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                        grpc_error *error);
@@ -247,6 +254,8 @@ void grpc_chttp2_unref_transport(grpc_exec_ctx *exec_ctx,
 void grpc_chttp2_ref_transport(grpc_chttp2_transport *t) { gpr_ref(&t->refs); }
 #endif
 
+static const grpc_transport_vtable *get_vtable(void);
+
 static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                            const grpc_channel_args *channel_args,
                            grpc_endpoint *ep, bool is_client) {
@@ -256,7 +265,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   GPR_ASSERT(strlen(GRPC_CHTTP2_CLIENT_CONNECT_STRING) ==
              GRPC_CHTTP2_CLIENT_CONNECT_STRLEN);
 
-  t->base.vtable = &vtable;
+  t->base.vtable = get_vtable();
   t->ep = ep;
   /* one ref is for destroy */
   gpr_ref_init(&t->refs, 1);
@@ -345,7 +354,6 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   if (is_client) {
     grpc_slice_buffer_add(&t->outbuf, grpc_slice_from_copied_string(
                                           GRPC_CHTTP2_CLIENT_CONNECT_STRING));
-    grpc_chttp2_initiate_write(exec_ctx, t, "initial_write");
   }
 
   /* configure http2 the way we like it */
@@ -361,14 +369,12 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   queue_setting_update(exec_ctx, t,
                        GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA, 1);
 
-  t->ping_policy = (grpc_chttp2_repeated_ping_policy){
-      .max_pings_without_data = DEFAULT_MAX_PINGS_BETWEEN_DATA,
-      .min_time_between_pings =
-          gpr_time_from_millis(DEFAULT_MIN_TIME_BETWEEN_PINGS_MS, GPR_TIMESPAN),
-      .max_ping_strikes = DEFAULT_MAX_PING_STRIKES,
-      .min_ping_interval_without_data = gpr_time_from_millis(
-          DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS, GPR_TIMESPAN),
-  };
+  t->ping_policy.max_pings_without_data = g_default_max_pings_without_data;
+  t->ping_policy.min_sent_ping_interval_without_data = gpr_time_from_millis(
+      g_default_min_sent_ping_interval_without_data_ms, GPR_TIMESPAN);
+  t->ping_policy.max_ping_strikes = g_default_max_ping_strikes;
+  t->ping_policy.min_recv_ping_interval_without_data = gpr_time_from_millis(
+      g_default_min_recv_ping_interval_without_data_ms, GPR_TIMESPAN);
 
   /* Keepalive setting */
   if (t->is_client) {
@@ -427,29 +433,37 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                              GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA)) {
         t->ping_policy.max_pings_without_data = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){DEFAULT_MAX_PINGS_BETWEEN_DATA, 0, INT_MAX});
+            (grpc_integer_options){g_default_max_pings_without_data, 0,
+                                   INT_MAX});
       } else if (0 == strcmp(channel_args->args[i].key,
                              GRPC_ARG_HTTP2_MAX_PING_STRIKES)) {
         t->ping_policy.max_ping_strikes = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){DEFAULT_MAX_PING_STRIKES, 0, INT_MAX});
-      } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS)) {
-        t->ping_policy.min_time_between_pings = gpr_time_from_millis(
-            grpc_channel_arg_get_integer(
-                &channel_args->args[i],
-                (grpc_integer_options){DEFAULT_MIN_TIME_BETWEEN_PINGS_MS, 0,
-                                       INT_MAX}),
-            GPR_TIMESPAN);
+            (grpc_integer_options){g_default_max_ping_strikes, 0, INT_MAX});
       } else if (0 ==
-                 strcmp(channel_args->args[i].key,
-                        GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS)) {
-        t->ping_policy.min_ping_interval_without_data = gpr_time_from_millis(
-            grpc_channel_arg_get_integer(
-                &channel_args->args[i],
-                (grpc_integer_options){
-                    DEFAULT_MIN_PING_INTERVAL_WITHOUT_DATA_MS, 0, INT_MAX}),
-            GPR_TIMESPAN);
+                 strcmp(
+                     channel_args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        t->ping_policy.min_sent_ping_interval_without_data =
+            gpr_time_from_millis(
+                grpc_channel_arg_get_integer(
+                    &channel_args->args[i],
+                    (grpc_integer_options){
+                        g_default_min_sent_ping_interval_without_data_ms, 0,
+                        INT_MAX}),
+                GPR_TIMESPAN);
+      } else if (0 ==
+                 strcmp(
+                     channel_args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        t->ping_policy.min_recv_ping_interval_without_data =
+            gpr_time_from_millis(
+                grpc_channel_arg_get_integer(
+                    &channel_args->args[i],
+                    (grpc_integer_options){
+                        g_default_min_recv_ping_interval_without_data_ms, 0,
+                        INT_MAX}),
+                GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
                              GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE)) {
         t->write_buffer_size = (uint32_t)grpc_channel_arg_get_integer(
@@ -556,13 +570,8 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     }
   }
 
-  GRPC_CLOSURE_INIT(&t->write_action, write_action, t,
-                    t->opt_target == GRPC_CHTTP2_OPTIMIZE_FOR_THROUGHPUT
-                        ? grpc_executor_scheduler
-                        : grpc_schedule_on_exec_ctx);
-
-  t->ping_state.pings_before_data_required =
-      t->ping_policy.max_pings_without_data;
+  /* No pings allowed before receiving a header or data frame. */
+  t->ping_state.pings_before_data_required = 0;
   t->ping_state.is_delayed_ping_timer_set = false;
 
   t->ping_recv_state.last_ping_recv_time = gpr_inf_past(GPR_CLOCK_MONOTONIC);
@@ -582,13 +591,14 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DISABLED;
   }
 
-  grpc_chttp2_initiate_write(exec_ctx, t, "init");
+  grpc_chttp2_initiate_write(exec_ctx, t,
+                             GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE);
   post_benign_reclaimer(exec_ctx, t);
 }
 
 static void destroy_transport_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                      grpc_error *error) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   t->destroying = 1;
   close_transport_locked(
       exec_ctx, t,
@@ -628,6 +638,9 @@ static void close_transport_locked(grpc_exec_ctx *exec_ctx,
     connectivity_state_set(exec_ctx, t, GRPC_CHANNEL_SHUTDOWN,
                            GRPC_ERROR_REF(error), "close_transport");
     grpc_endpoint_shutdown(exec_ctx, t->ep, GRPC_ERROR_REF(error));
+    if (t->ping_state.is_delayed_ping_timer_set) {
+      grpc_timer_cancel(exec_ctx, &t->ping_state.delayed_ping_timer);
+    }
     switch (t->keepalive_state) {
       case GRPC_CHTTP2_KEEPALIVE_STATE_WAITING:
         grpc_timer_cancel(exec_ctx, &t->keepalive_ping_timer);
@@ -693,7 +706,10 @@ static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
                     grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&s->unprocessed_incoming_frames_buffer);
   grpc_slice_buffer_init(&s->frame_storage);
+  grpc_slice_buffer_init(&s->compressed_data_buffer);
+  grpc_slice_buffer_init(&s->decompressed_data_buffer);
   s->pending_byte_stream = false;
+  s->decompressed_header_bytes = 0;
   GRPC_CLOSURE_INIT(&s->reset_byte_stream, reset_byte_stream, s,
                     grpc_combiner_scheduler(t->combiner));
 
@@ -714,7 +730,7 @@ static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
 
 static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, void *sp,
                                   grpc_error *error) {
-  grpc_chttp2_stream *s = sp;
+  grpc_chttp2_stream *s = (grpc_chttp2_stream *)sp;
   grpc_chttp2_transport *t = s->t;
 
   GPR_TIMER_BEGIN("destroy_stream", 0);
@@ -727,14 +743,8 @@ static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, void *sp,
   grpc_slice_buffer_destroy_internal(exec_ctx,
                                      &s->unprocessed_incoming_frames_buffer);
   grpc_slice_buffer_destroy_internal(exec_ctx, &s->frame_storage);
-  if (s->compressed_data_buffer) {
-    grpc_slice_buffer_destroy_internal(exec_ctx, s->compressed_data_buffer);
-    gpr_free(s->compressed_data_buffer);
-  }
-  if (s->decompressed_data_buffer) {
-    grpc_slice_buffer_destroy_internal(exec_ctx, s->decompressed_data_buffer);
-    gpr_free(s->decompressed_data_buffer);
-  }
+  grpc_slice_buffer_destroy_internal(exec_ctx, &s->compressed_data_buffer);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &s->decompressed_data_buffer);
 
   grpc_chttp2_list_remove_stalled_by_transport(t, s);
   grpc_chttp2_list_remove_stalled_by_stream(t, s);
@@ -798,7 +808,7 @@ static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
 
 grpc_chttp2_stream *grpc_chttp2_parsing_lookup_stream(grpc_chttp2_transport *t,
                                                       uint32_t id) {
-  return grpc_chttp2_stream_map_find(&t->stream_map, id);
+  return (grpc_chttp2_stream *)grpc_chttp2_stream_map_find(&t->stream_map, id);
 }
 
 grpc_chttp2_stream *grpc_chttp2_parsing_accept_stream(grpc_exec_ctx *exec_ctx,
@@ -850,13 +860,92 @@ static void set_write_state(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   }
 }
 
+static void inc_initiate_write_reason(
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_initiate_write_reason reason) {
+  switch (reason) {
+    case GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_BDP_ESTIMATOR_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED(
+          exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE(exec_ctx);
+      break;
+    case GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM:
+      GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM(exec_ctx);
+      break;
+  }
+}
+
 void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx,
-                                grpc_chttp2_transport *t, const char *reason) {
+                                grpc_chttp2_transport *t,
+                                grpc_chttp2_initiate_write_reason reason) {
   GPR_TIMER_BEGIN("grpc_chttp2_initiate_write", 0);
 
   switch (t->write_state) {
     case GRPC_CHTTP2_WRITE_STATE_IDLE:
-      set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING, reason);
+      inc_initiate_write_reason(exec_ctx, reason);
+      set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
+                      grpc_chttp2_initiate_write_reason_string(reason));
+      t->is_first_write_in_batch = true;
       GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
       GRPC_CLOSURE_SCHED(
           exec_ctx,
@@ -867,7 +956,7 @@ void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx,
       break;
     case GRPC_CHTTP2_WRITE_STATE_WRITING:
       set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE,
-                      reason);
+                      grpc_chttp2_initiate_write_reason_string(reason));
       break;
     case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE:
       break;
@@ -875,52 +964,96 @@ void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx,
   GPR_TIMER_END("grpc_chttp2_initiate_write", 0);
 }
 
-void grpc_chttp2_become_writable(
-    grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_stream *s,
-    grpc_chttp2_stream_write_type stream_write_type, const char *reason) {
+void grpc_chttp2_mark_stream_writable(grpc_exec_ctx *exec_ctx,
+                                      grpc_chttp2_transport *t,
+                                      grpc_chttp2_stream *s) {
   if (!t->closed && grpc_chttp2_list_add_writable_stream(t, s)) {
     GRPC_CHTTP2_STREAM_REF(s, "chttp2_writing:become");
   }
-  switch (stream_write_type) {
-    case GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK:
-      break;
-    case GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED:
-      grpc_chttp2_initiate_write(exec_ctx, t, reason);
-      break;
-    case GRPC_CHTTP2_STREAM_WRITE_INITIATE_UNCOVERED:
-      grpc_chttp2_initiate_write(exec_ctx, t, reason);
-      break;
+}
+
+static grpc_closure_scheduler *write_scheduler(grpc_chttp2_transport *t,
+                                               bool early_results_scheduled,
+                                               bool partial_write) {
+  /* if it's not the first write in a batch, always offload to the executor:
+     we'll probably end up queuing against the kernel anyway, so we'll likely
+     get better latency overall if we switch writing work elsewhere and continue
+     with application work above */
+  if (!t->is_first_write_in_batch) {
+    return grpc_executor_scheduler(GRPC_EXECUTOR_SHORT);
+  }
+  /* equivalently, if it's a partial write, we *know* we're going to be taking a
+     thread jump to write it because of the above, may as well do so
+     immediately */
+  if (partial_write) {
+    return grpc_executor_scheduler(GRPC_EXECUTOR_SHORT);
+  }
+  switch (t->opt_target) {
+    case GRPC_CHTTP2_OPTIMIZE_FOR_THROUGHPUT:
+      /* executor gives us the largest probability of being able to batch a
+       * write with others on this transport */
+      return grpc_executor_scheduler(GRPC_EXECUTOR_SHORT);
+    case GRPC_CHTTP2_OPTIMIZE_FOR_LATENCY:
+      return grpc_schedule_on_exec_ctx;
+  }
+  GPR_UNREACHABLE_CODE(return NULL);
+}
+
+#define WRITE_STATE_TUPLE_TO_INT(p, i) (2 * (int)(p) + (int)(i))
+static const char *begin_writing_desc(bool partial, bool inlined) {
+  switch (WRITE_STATE_TUPLE_TO_INT(partial, inlined)) {
+    case WRITE_STATE_TUPLE_TO_INT(false, false):
+      return "begin write in background";
+    case WRITE_STATE_TUPLE_TO_INT(false, true):
+      return "begin write in current thread";
+    case WRITE_STATE_TUPLE_TO_INT(true, false):
+      return "begin partial write in background";
+    case WRITE_STATE_TUPLE_TO_INT(true, true):
+      return "begin partial write in current thread";
   }
+  GPR_UNREACHABLE_CODE(return "bad state tuple");
 }
 
 static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *gt,
                                       grpc_error *error_ignored) {
   GPR_TIMER_BEGIN("write_action_begin_locked", 0);
-  grpc_chttp2_transport *t = gt;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt;
   GPR_ASSERT(t->write_state != GRPC_CHTTP2_WRITE_STATE_IDLE);
-  switch (t->closed ? GRPC_CHTTP2_NOTHING_TO_WRITE
-                    : grpc_chttp2_begin_write(exec_ctx, t)) {
-    case GRPC_CHTTP2_NOTHING_TO_WRITE:
-      set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_IDLE,
-                      "begin writing nothing");
-      GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "writing");
-      break;
-    case GRPC_CHTTP2_PARTIAL_WRITE:
-      set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE,
-                      "begin writing partial");
-      GRPC_CLOSURE_SCHED(exec_ctx, &t->write_action, GRPC_ERROR_NONE);
-      break;
-    case GRPC_CHTTP2_FULL_WRITE:
-      set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
-                      "begin writing");
-      GRPC_CLOSURE_SCHED(exec_ctx, &t->write_action, GRPC_ERROR_NONE);
-      break;
+  grpc_chttp2_begin_write_result r;
+  if (t->closed) {
+    r.writing = false;
+  } else {
+    r = grpc_chttp2_begin_write(exec_ctx, t);
+  }
+  if (r.writing) {
+    if (r.partial) {
+      GRPC_STATS_INC_HTTP2_PARTIAL_WRITES(exec_ctx);
+    }
+    if (!t->is_first_write_in_batch) {
+      GRPC_STATS_INC_HTTP2_WRITES_CONTINUED(exec_ctx);
+    }
+    grpc_closure_scheduler *scheduler =
+        write_scheduler(t, r.early_results_scheduled, r.partial);
+    if (scheduler != grpc_schedule_on_exec_ctx) {
+      GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED(exec_ctx);
+    }
+    set_write_state(
+        exec_ctx, t, r.partial ? GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE
+                               : GRPC_CHTTP2_WRITE_STATE_WRITING,
+        begin_writing_desc(r.partial, scheduler == grpc_schedule_on_exec_ctx));
+    GRPC_CLOSURE_SCHED(exec_ctx, GRPC_CLOSURE_INIT(&t->write_action,
+                                                   write_action, t, scheduler),
+                       GRPC_ERROR_NONE);
+  } else {
+    set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_IDLE,
+                    "begin writing nothing");
+    GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "writing");
   }
   GPR_TIMER_END("write_action_begin_locked", 0);
 }
 
 static void write_action(grpc_exec_ctx *exec_ctx, void *gt, grpc_error *error) {
-  grpc_chttp2_transport *t = gt;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt;
   GPR_TIMER_BEGIN("write_action", 0);
   grpc_endpoint_write(
       exec_ctx, t->ep, &t->outbuf,
@@ -932,7 +1065,7 @@ static void write_action(grpc_exec_ctx *exec_ctx, void *gt, grpc_error *error) {
 static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                     grpc_error *error) {
   GPR_TIMER_BEGIN("terminate_writing_with_lock", 0);
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
 
   if (error != GRPC_ERROR_NONE) {
     close_transport_locked(exec_ctx, t, GRPC_ERROR_REF(error));
@@ -957,7 +1090,8 @@ static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp,
     case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE:
       GPR_TIMER_MARK("state=writing_stale_no_poller", 0);
       set_write_state(exec_ctx, t, GRPC_CHTTP2_WRITE_STATE_WRITING,
-                      "continue writing [!covered]");
+                      "continue writing");
+      t->is_first_write_in_batch = false;
       GRPC_CHTTP2_REF_TRANSPORT(t, "writing");
       GRPC_CLOSURE_RUN(
           exec_ctx,
@@ -1059,9 +1193,9 @@ static void maybe_start_some_streams(grpc_exec_ctx *exec_ctx,
 
     grpc_chttp2_stream_map_add(&t->stream_map, s->id, s);
     post_destructive_reclaimer(exec_ctx, t);
-    grpc_chttp2_become_writable(exec_ctx, t, s,
-                                GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
-                                "new_stream");
+    grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+    grpc_chttp2_initiate_write(exec_ctx, t,
+                               GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM);
   }
   /* cancel out streams that will never be started */
   while (t->next_stream_id >= MAX_CLIENT_STREAM_ID &&
@@ -1110,12 +1244,14 @@ void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx,
   closure->next_data.scratch -= CLOSURE_BARRIER_FIRST_REF_BIT;
   if (GRPC_TRACER_ON(grpc_http_trace)) {
     const char *errstr = grpc_error_string(error);
-    gpr_log(GPR_DEBUG,
-            "complete_closure_step: %p refs=%d flags=0x%04x desc=%s err=%s",
-            closure,
-            (int)(closure->next_data.scratch / CLOSURE_BARRIER_FIRST_REF_BIT),
-            (int)(closure->next_data.scratch % CLOSURE_BARRIER_FIRST_REF_BIT),
-            desc, errstr);
+    gpr_log(
+        GPR_DEBUG,
+        "complete_closure_step: t=%p %p refs=%d flags=0x%04x desc=%s err=%s "
+        "write_state=%s",
+        t, closure,
+        (int)(closure->next_data.scratch / CLOSURE_BARRIER_FIRST_REF_BIT),
+        (int)(closure->next_data.scratch % CLOSURE_BARRIER_FIRST_REF_BIT), desc,
+        errstr, write_state_name(t->write_state));
   }
   if (error != GRPC_ERROR_NONE) {
     if (closure->error_data.error == GRPC_ERROR_NONE) {
@@ -1156,9 +1292,9 @@ static void maybe_become_writable_due_to_send_msg(grpc_exec_ctx *exec_ctx,
                                                   grpc_chttp2_stream *s) {
   if (s->id != 0 && (!s->write_buffering ||
                      s->flow_controlled_buffer.length > t->write_buffer_size)) {
-    grpc_chttp2_become_writable(exec_ctx, t, s,
-                                GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
-                                "op.send_message");
+    grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+    grpc_chttp2_initiate_write(exec_ctx, t,
+                               GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE);
   }
 }
 
@@ -1190,15 +1326,19 @@ static void continue_fetching_send_locked(grpc_exec_ctx *exec_ctx,
       } else {
         grpc_chttp2_write_cb *cb = t->write_cb_pool;
         if (cb == NULL) {
-          cb = gpr_malloc(sizeof(*cb));
+          cb = (grpc_chttp2_write_cb *)gpr_malloc(sizeof(*cb));
         } else {
           t->write_cb_pool = cb->next;
         }
         cb->call_at_byte = notify_offset;
         cb->closure = s->fetching_send_message_finished;
         s->fetching_send_message_finished = NULL;
-        cb->next = s->on_write_finished_cbs;
-        s->on_write_finished_cbs = cb;
+        grpc_chttp2_write_cb **list =
+            s->fetching_send_message->flags & GRPC_WRITE_THROUGH
+                ? &s->on_write_finished_cbs
+                : &s->on_flow_controlled_cbs;
+        cb->next = *list;
+        *list = cb;
       }
       s->fetching_send_message = NULL;
       return; /* early out */
@@ -1218,7 +1358,7 @@ static void continue_fetching_send_locked(grpc_exec_ctx *exec_ctx,
 
 static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs,
                                   grpc_error *error) {
-  grpc_chttp2_stream *s = gs;
+  grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs;
   grpc_chttp2_transport *t = s->t;
   if (error == GRPC_ERROR_NONE) {
     error = grpc_byte_stream_pull(exec_ctx, s->fetching_send_message,
@@ -1253,11 +1393,14 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
                                      grpc_error *error_ignored) {
   GPR_TIMER_BEGIN("perform_stream_op_locked", 0);
 
-  grpc_transport_stream_op_batch *op = stream_op;
-  grpc_chttp2_stream *s = op->handler_private.extra_arg;
+  grpc_transport_stream_op_batch *op =
+      (grpc_transport_stream_op_batch *)stream_op;
+  grpc_chttp2_stream *s = (grpc_chttp2_stream *)op->handler_private.extra_arg;
   grpc_transport_stream_op_batch_payload *op_payload = op->payload;
   grpc_chttp2_transport *t = s->t;
 
+  GRPC_STATS_INC_HTTP2_OP_BATCHES(exec_ctx);
+
   if (GRPC_TRACER_ON(grpc_http_trace)) {
     char *str = grpc_transport_stream_op_batch_string(op);
     gpr_log(GPR_DEBUG, "perform_stream_op_locked: %s; on_complete = %p", str,
@@ -1291,13 +1434,27 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
   }
 
   if (op->cancel_stream) {
+    GRPC_STATS_INC_HTTP2_OP_CANCEL(exec_ctx);
     grpc_chttp2_cancel_stream(exec_ctx, t, s,
                               op_payload->cancel_stream.cancel_error);
   }
 
   if (op->send_initial_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA(exec_ctx);
     GPR_ASSERT(s->send_initial_metadata_finished == NULL);
     on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
+
+    /* Identify stream compression */
+    if (op_payload->send_initial_metadata.send_initial_metadata->idx.named
+                .content_encoding == NULL ||
+        grpc_stream_compression_method_parse(
+            GRPC_MDVALUE(
+                op_payload->send_initial_metadata.send_initial_metadata->idx
+                    .named.content_encoding->md),
+            true, &s->stream_compression_method) == 0) {
+      s->stream_compression_method = GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS;
+    }
+
     s->send_initial_metadata_finished = add_closure_barrier(on_complete);
     s->send_initial_metadata =
         op_payload->send_initial_metadata.send_initial_metadata;
@@ -1341,15 +1498,13 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
           }
         } else {
           GPR_ASSERT(s->id != 0);
-          grpc_chttp2_stream_write_type write_type =
-              GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED;
-          if (op->send_message &&
-              (op->payload->send_message.send_message->flags &
-               GRPC_WRITE_BUFFER_HINT)) {
-            write_type = GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK;
+          grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+          if (!(op->send_message &&
+                (op->payload->send_message.send_message->flags &
+                 GRPC_WRITE_BUFFER_HINT))) {
+            grpc_chttp2_initiate_write(
+                exec_ctx, t, GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA);
           }
-          grpc_chttp2_become_writable(exec_ctx, t, s, write_type,
-                                      "op.send_initial_metadata");
         }
       } else {
         s->send_initial_metadata = NULL;
@@ -1361,17 +1516,31 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
             "send_initial_metadata_finished");
       }
     }
+    if (op_payload->send_initial_metadata.peer_string != NULL) {
+      gpr_atm_rel_store(op_payload->send_initial_metadata.peer_string,
+                        (gpr_atm)gpr_strdup(t->peer_string));
+    }
   }
 
   if (op->send_message) {
+    GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE(exec_ctx);
+    GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(
+        exec_ctx, op->payload->send_message.send_message->length);
     on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
     s->fetching_send_message_finished = add_closure_barrier(op->on_complete);
     if (s->write_closed) {
+      // Return an error unless the client has already received trailing
+      // metadata from the server, since an application using a
+      // streaming call might send another message before getting a
+      // recv_message failure, breaking out of its loop, and then
+      // starting recv_trailing_metadata.
       grpc_chttp2_complete_closure_step(
           exec_ctx, t, s, &s->fetching_send_message_finished,
-          GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
-              "Attempt to send message after stream was closed",
-              &s->write_closed_error, 1),
+          t->is_client && s->received_trailing_metadata
+              ? GRPC_ERROR_NONE
+              : GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
+                    "Attempt to send message after stream was closed",
+                    &s->write_closed_error, 1),
           "fetching_send_message_finished");
     } else {
       GPR_ASSERT(s->fetching_send_message == NULL);
@@ -1401,6 +1570,7 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
   }
 
   if (op->send_trailing_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA(exec_ctx);
     GPR_ASSERT(s->send_trailing_metadata_finished == NULL);
     on_complete->next_data.scratch |= CLOSURE_BARRIER_MAY_COVER_WRITE;
     s->send_trailing_metadata_finished = add_closure_barrier(on_complete);
@@ -1442,14 +1612,15 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
       } else if (s->id != 0) {
         /* TODO(ctiller): check if there's flow control for any outstanding
            bytes before going writable */
-        grpc_chttp2_become_writable(exec_ctx, t, s,
-                                    GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
-                                    "op.send_trailing_metadata");
+        grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+        grpc_chttp2_initiate_write(
+            exec_ctx, t, GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA);
       }
     }
   }
 
   if (op->recv_initial_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA(exec_ctx);
     GPR_ASSERT(s->recv_initial_metadata_ready == NULL);
     s->recv_initial_metadata_ready =
         op_payload->recv_initial_metadata.recv_initial_metadata_ready;
@@ -1457,10 +1628,15 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
         op_payload->recv_initial_metadata.recv_initial_metadata;
     s->trailing_metadata_available =
         op_payload->recv_initial_metadata.trailing_metadata_available;
+    if (op_payload->recv_initial_metadata.peer_string != NULL) {
+      gpr_atm_rel_store(op_payload->recv_initial_metadata.peer_string,
+                        (gpr_atm)gpr_strdup(t->peer_string));
+    }
     grpc_chttp2_maybe_complete_recv_initial_metadata(exec_ctx, t, s);
   }
 
   if (op->recv_message) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE(exec_ctx);
     size_t already_received;
     GPR_ASSERT(s->recv_message_ready == NULL);
     GPR_ASSERT(!s->pending_byte_stream);
@@ -1482,6 +1658,7 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
   }
 
   if (op->recv_trailing_metadata) {
+    GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA(exec_ctx);
     GPR_ASSERT(s->recv_trailing_metadata_finished == NULL);
     s->recv_trailing_metadata_finished = add_closure_barrier(on_complete);
     s->recv_trailing_metadata =
@@ -1549,23 +1726,28 @@ static void cancel_pings(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   GRPC_ERROR_UNREF(error);
 }
 
-static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
-                             grpc_chttp2_ping_type ping_type,
-                             grpc_closure *on_initiate, grpc_closure *on_ack) {
+static void send_ping_locked(
+    grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
+    grpc_chttp2_ping_type ping_type, grpc_closure *on_initiate,
+    grpc_closure *on_ack,
+    grpc_chttp2_initiate_write_reason initiate_write_reason) {
   grpc_chttp2_ping_queue *pq = &t->ping_queues[ping_type];
   grpc_closure_list_append(&pq->lists[GRPC_CHTTP2_PCL_INITIATE], on_initiate,
                            GRPC_ERROR_NONE);
   if (grpc_closure_list_append(&pq->lists[GRPC_CHTTP2_PCL_NEXT], on_ack,
                                GRPC_ERROR_NONE)) {
-    grpc_chttp2_initiate_write(exec_ctx, t, "send_ping");
+    grpc_chttp2_initiate_write(exec_ctx, t, initiate_write_reason);
   }
 }
 
 static void retry_initiate_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                        grpc_error *error) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   t->ping_state.is_delayed_ping_timer_set = false;
-  grpc_chttp2_initiate_write(exec_ctx, t, "retry_send_ping");
+  if (error == GRPC_ERROR_NONE) {
+    grpc_chttp2_initiate_write(exec_ctx, t,
+                               GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING);
+  }
 }
 
 void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
@@ -1580,7 +1762,8 @@ void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   }
   GRPC_CLOSURE_LIST_SCHED(exec_ctx, &pq->lists[GRPC_CHTTP2_PCL_INFLIGHT]);
   if (!grpc_closure_list_empty(pq->lists[GRPC_CHTTP2_PCL_NEXT])) {
-    grpc_chttp2_initiate_write(exec_ctx, t, "continue_pings");
+    grpc_chttp2_initiate_write(exec_ctx, t,
+                               GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS);
   }
 }
 
@@ -1593,7 +1776,8 @@ static void send_goaway(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                         &slice, &http_error);
   grpc_chttp2_goaway_append(t->last_new_stream_id, (uint32_t)http_error,
                             grpc_slice_ref_internal(slice), &t->qbuf);
-  grpc_chttp2_initiate_write(exec_ctx, t, "goaway_sent");
+  grpc_chttp2_initiate_write(exec_ctx, t,
+                             GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT);
   GRPC_ERROR_UNREF(error);
 }
 
@@ -1615,8 +1799,9 @@ void grpc_chttp2_add_ping_strike(grpc_exec_ctx *exec_ctx,
 static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx,
                                         void *stream_op,
                                         grpc_error *error_ignored) {
-  grpc_transport_op *op = stream_op;
-  grpc_chttp2_transport *t = op->handler_private.extra_arg;
+  grpc_transport_op *op = (grpc_transport_op *)stream_op;
+  grpc_chttp2_transport *t =
+      (grpc_chttp2_transport *)op->handler_private.extra_arg;
   grpc_error *close_transport = op->disconnect_with_error;
 
   if (op->goaway_error) {
@@ -1639,7 +1824,8 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx,
 
   if (op->send_ping) {
     send_ping_locked(exec_ctx, t, GRPC_CHTTP2_PING_ON_NEXT_WRITE, NULL,
-                     op->send_ping);
+                     op->send_ping,
+                     GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING);
   }
 
   if (op->on_connectivity_state_change != NULL) {
@@ -1715,20 +1901,20 @@ void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx,
                                  &s->frame_storage);
           s->unprocessed_incoming_frames_decompressed = false;
         }
-        if (s->stream_compression_recv_enabled &&
-            !s->unprocessed_incoming_frames_decompressed) {
-          GPR_ASSERT(s->decompressed_data_buffer->length == 0);
+        if (!s->unprocessed_incoming_frames_decompressed) {
+          GPR_ASSERT(s->decompressed_data_buffer.length == 0);
           bool end_of_context;
           if (!s->stream_decompression_ctx) {
             s->stream_decompression_ctx =
                 grpc_stream_compression_context_create(
-                    GRPC_STREAM_COMPRESSION_DECOMPRESS);
+                    s->stream_decompression_method);
           }
-          if (!grpc_stream_decompress(s->stream_decompression_ctx,
-                                      &s->unprocessed_incoming_frames_buffer,
-                                      s->decompressed_data_buffer, NULL,
-                                      GRPC_HEADER_SIZE_IN_BYTES,
-                                      &end_of_context)) {
+          if (!grpc_stream_decompress(
+                  s->stream_decompression_ctx,
+                  &s->unprocessed_incoming_frames_buffer,
+                  &s->decompressed_data_buffer, NULL,
+                  GRPC_HEADER_SIZE_IN_BYTES - s->decompressed_header_bytes,
+                  &end_of_context)) {
             grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
                                                        &s->frame_storage);
             grpc_slice_buffer_reset_and_unref_internal(
@@ -1736,9 +1922,13 @@ void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx,
             error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
                 "Stream decompression error.");
           } else {
+            s->decompressed_header_bytes += s->decompressed_data_buffer.length;
+            if (s->decompressed_header_bytes == GRPC_HEADER_SIZE_IN_BYTES) {
+              s->decompressed_header_bytes = 0;
+            }
             error = grpc_deframe_unprocessed_incoming_frames(
-                exec_ctx, &s->data_parser, s, s->decompressed_data_buffer, NULL,
-                s->recv_message);
+                exec_ctx, &s->data_parser, s, &s->decompressed_data_buffer,
+                NULL, s->recv_message);
             if (end_of_context) {
               grpc_stream_compression_context_destroy(
                   s->stream_decompression_ctx);
@@ -1787,15 +1977,14 @@ void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
     }
     bool pending_data = s->pending_byte_stream ||
                         s->unprocessed_incoming_frames_buffer.length > 0;
-    if (s->stream_compression_recv_enabled && s->read_closed &&
-        s->frame_storage.length > 0 && !pending_data && !s->seen_error &&
-        s->recv_trailing_metadata_finished != NULL) {
+    if (s->read_closed && s->frame_storage.length > 0 && !pending_data &&
+        !s->seen_error && s->recv_trailing_metadata_finished != NULL) {
       /* Maybe some SYNC_FLUSH data is left in frame_storage. Consume them and
        * maybe decompress the next 5 bytes in the stream. */
       bool end_of_context;
       if (!s->stream_decompression_ctx) {
         s->stream_decompression_ctx = grpc_stream_compression_context_create(
-            GRPC_STREAM_COMPRESSION_DECOMPRESS);
+            s->stream_decompression_method);
       }
       if (!grpc_stream_decompress(s->stream_decompression_ctx,
                                   &s->frame_storage,
@@ -1808,6 +1997,7 @@ void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
       } else {
         if (s->unprocessed_incoming_frames_buffer.length > 0) {
           s->unprocessed_incoming_frames_decompressed = true;
+          pending_data = true;
         }
         if (end_of_context) {
           grpc_stream_compression_context_destroy(s->stream_decompression_ctx);
@@ -1815,8 +2005,7 @@ void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
         }
       }
     }
-    if (s->read_closed && s->frame_storage.length == 0 &&
-        (!pending_data || s->seen_error) &&
+    if (s->read_closed && s->frame_storage.length == 0 && !pending_data &&
         s->recv_trailing_metadata_finished != NULL) {
       grpc_chttp2_incoming_metadata_buffer_publish(
           exec_ctx, &s->metadata_buffer[1], s->recv_trailing_metadata);
@@ -1829,7 +2018,8 @@ void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
 
 static void remove_stream(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                           uint32_t id, grpc_error *error) {
-  grpc_chttp2_stream *s = grpc_chttp2_stream_map_delete(&t->stream_map, id);
+  grpc_chttp2_stream *s =
+      (grpc_chttp2_stream *)grpc_chttp2_stream_map_delete(&t->stream_map, id);
   GPR_ASSERT(s);
   if (t->incoming_stream == s) {
     t->incoming_stream = NULL;
@@ -1884,7 +2074,8 @@ void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx,
       grpc_slice_buffer_add(
           &t->qbuf, grpc_chttp2_rst_stream_create(s->id, (uint32_t)http_error,
                                                   &s->stats.outgoing));
-      grpc_chttp2_initiate_write(exec_ctx, t, "rst_stream");
+      grpc_chttp2_initiate_write(exec_ctx, t,
+                                 GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM);
     }
   }
   if (due_to_error != GRPC_ERROR_NONE && !s->seen_error) {
@@ -1960,6 +2151,21 @@ static grpc_error *removal_error(grpc_error *extra_error, grpc_chttp2_stream *s,
   return error;
 }
 
+static void flush_write_list(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
+                             grpc_chttp2_stream *s, grpc_chttp2_write_cb **list,
+                             grpc_error *error) {
+  while (*list) {
+    grpc_chttp2_write_cb *cb = *list;
+    *list = cb->next;
+    grpc_chttp2_complete_closure_step(exec_ctx, t, s, &cb->closure,
+                                      GRPC_ERROR_REF(error),
+                                      "on_write_finished_cb");
+    cb->next = t->write_cb_pool;
+    t->write_cb_pool = cb;
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
 void grpc_chttp2_fail_pending_writes(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
                                      grpc_chttp2_stream *s, grpc_error *error) {
@@ -1979,16 +2185,9 @@ void grpc_chttp2_fail_pending_writes(grpc_exec_ctx *exec_ctx,
   grpc_chttp2_complete_closure_step(
       exec_ctx, t, s, &s->fetching_send_message_finished, GRPC_ERROR_REF(error),
       "fetching_send_message_finished");
-  while (s->on_write_finished_cbs) {
-    grpc_chttp2_write_cb *cb = s->on_write_finished_cbs;
-    s->on_write_finished_cbs = cb->next;
-    grpc_chttp2_complete_closure_step(exec_ctx, t, s, &cb->closure,
-                                      GRPC_ERROR_REF(error),
-                                      "on_write_finished_cb");
-    cb->next = t->write_cb_pool;
-    t->write_cb_pool = cb;
-  }
-  GRPC_ERROR_UNREF(error);
+  flush_write_list(exec_ctx, t, s, &s->on_write_finished_cbs,
+                   GRPC_ERROR_REF(error));
+  flush_write_list(exec_ctx, t, s, &s->on_flow_controlled_cbs, error);
 }
 
 void grpc_chttp2_mark_stream_closed(grpc_exec_ctx *exec_ctx,
@@ -2197,7 +2396,8 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                                               &s->stats.outgoing));
 
   grpc_chttp2_mark_stream_closed(exec_ctx, t, s, 1, 1, error);
-  grpc_chttp2_initiate_write(exec_ctx, t, "close_from_api");
+  grpc_chttp2_initiate_write(exec_ctx, t,
+                             GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API);
 }
 
 typedef struct {
@@ -2207,8 +2407,8 @@ typedef struct {
 } cancel_stream_cb_args;
 
 static void cancel_stream_cb(void *user_data, uint32_t key, void *stream) {
-  cancel_stream_cb_args *args = user_data;
-  grpc_chttp2_stream *s = stream;
+  cancel_stream_cb_args *args = (cancel_stream_cb_args *)user_data;
+  grpc_chttp2_stream *s = (grpc_chttp2_stream *)stream;
   grpc_chttp2_cancel_stream(args->exec_ctx, args->t, s,
                             GRPC_ERROR_REF(args->error));
 }
@@ -2232,21 +2432,20 @@ void grpc_chttp2_act_on_flowctl_action(grpc_exec_ctx *exec_ctx,
     case GRPC_CHTTP2_FLOWCTL_NO_ACTION_NEEDED:
       break;
     case GRPC_CHTTP2_FLOWCTL_UPDATE_IMMEDIATELY:
-      grpc_chttp2_become_writable(exec_ctx, t, s,
-                                  GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
-                                  "immediate stream flowctl");
+      grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+      grpc_chttp2_initiate_write(
+          exec_ctx, t, GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL);
       break;
     case GRPC_CHTTP2_FLOWCTL_QUEUE_UPDATE:
-      grpc_chttp2_become_writable(exec_ctx, t, s,
-                                  GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK,
-                                  "queue stream flowctl");
+      grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
       break;
   }
   switch (action.send_transport_update) {
     case GRPC_CHTTP2_FLOWCTL_NO_ACTION_NEEDED:
       break;
     case GRPC_CHTTP2_FLOWCTL_UPDATE_IMMEDIATELY:
-      grpc_chttp2_initiate_write(exec_ctx, t, "immediate transport flowctl");
+      grpc_chttp2_initiate_write(
+          exec_ctx, t, GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL);
       break;
     // this is the same as no action b/c every time the transport enters the
     // writing path it will maybe do an update
@@ -2264,7 +2463,8 @@ void grpc_chttp2_act_on_flowctl_action(grpc_exec_ctx *exec_ctx,
                            (uint32_t)action.max_frame_size);
     }
     if (action.send_setting_update == GRPC_CHTTP2_FLOWCTL_UPDATE_IMMEDIATELY) {
-      grpc_chttp2_initiate_write(exec_ctx, t, "immediate setting update");
+      grpc_chttp2_initiate_write(exec_ctx, t,
+                                 GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS);
     }
   }
   if (action.need_ping) {
@@ -2272,7 +2472,8 @@ void grpc_chttp2_act_on_flowctl_action(grpc_exec_ctx *exec_ctx,
     grpc_bdp_estimator_schedule_ping(&t->flow_control.bdp_estimator);
     send_ping_locked(exec_ctx, t,
                      GRPC_CHTTP2_PING_BEFORE_TRANSPORT_WINDOW_UPDATE,
-                     &t->start_bdp_ping_locked, &t->finish_bdp_ping_locked);
+                     &t->start_bdp_ping_locked, &t->finish_bdp_ping_locked,
+                     GRPC_CHTTP2_INITIATE_WRITE_BDP_ESTIMATOR_PING);
   }
 }
 
@@ -2310,7 +2511,7 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                grpc_error *error) {
   GPR_TIMER_BEGIN("reading_action_locked", 0);
 
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
 
   GRPC_ERROR_REF(error);
 
@@ -2351,9 +2552,10 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp,
       if (t->flow_control.initial_window_update > 0) {
         grpc_chttp2_stream *s;
         while (grpc_chttp2_list_pop_stalled_by_stream(t, &s)) {
-          grpc_chttp2_become_writable(
-              exec_ctx, t, s, GRPC_CHTTP2_STREAM_WRITE_INITIATE_UNCOVERED,
-              "unstalled");
+          grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+          grpc_chttp2_initiate_write(
+              exec_ctx, t,
+              GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING);
         }
       }
       t->flow_control.initial_window_update = 0;
@@ -2395,7 +2597,7 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp,
 
 static void start_bdp_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                   grpc_error *error) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   if (GRPC_TRACER_ON(grpc_http_trace)) {
     gpr_log(GPR_DEBUG, "%s: Start BDP ping", t->peer_string);
   }
@@ -2408,7 +2610,7 @@ static void start_bdp_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
 
 static void finish_bdp_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
                                    grpc_error *error) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   if (GRPC_TRACER_ON(grpc_http_trace)) {
     gpr_log(GPR_DEBUG, "%s: Complete BDP ping", t->peer_string);
   }
@@ -2450,6 +2652,36 @@ void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args,
                 &args->args[i],
                 (grpc_integer_options){g_default_keepalive_permit_without_calls,
                                        0, 1});
+      } else if (0 ==
+                 strcmp(args->args[i].key, GRPC_ARG_HTTP2_MAX_PING_STRIKES)) {
+        g_default_max_ping_strikes = grpc_channel_arg_get_integer(
+            &args->args[i],
+            (grpc_integer_options){g_default_max_ping_strikes, 0, INT_MAX});
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA)) {
+        g_default_max_pings_without_data = grpc_channel_arg_get_integer(
+            &args->args[i], (grpc_integer_options){
+                                g_default_max_pings_without_data, 0, INT_MAX});
+      } else if (0 ==
+                 strcmp(
+                     args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        g_default_min_sent_ping_interval_without_data_ms =
+            grpc_channel_arg_get_integer(
+                &args->args[i],
+                (grpc_integer_options){
+                    g_default_min_sent_ping_interval_without_data_ms, 0,
+                    INT_MAX});
+      } else if (0 ==
+                 strcmp(
+                     args->args[i].key,
+                     GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS)) {
+        g_default_min_recv_ping_interval_without_data_ms =
+            grpc_channel_arg_get_integer(
+                &args->args[i],
+                (grpc_integer_options){
+                    g_default_min_recv_ping_interval_without_data_ms, 0,
+                    INT_MAX});
       }
     }
   }
@@ -2457,7 +2689,7 @@ void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args,
 
 static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                        grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   GPR_ASSERT(t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_WAITING);
   if (t->destroying || t->closed) {
     t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DYING;
@@ -2468,7 +2700,8 @@ static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
       GRPC_CHTTP2_REF_TRANSPORT(t, "keepalive ping end");
       send_ping_locked(exec_ctx, t, GRPC_CHTTP2_PING_ON_NEXT_WRITE,
                        &t->start_keepalive_ping_locked,
-                       &t->finish_keepalive_ping_locked);
+                       &t->finish_keepalive_ping_locked,
+                       GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING);
     } else {
       GRPC_CHTTP2_REF_TRANSPORT(t, "init keepalive ping");
       grpc_timer_init(
@@ -2489,7 +2722,7 @@ static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void start_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                         grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   GRPC_CHTTP2_REF_TRANSPORT(t, "keepalive watchdog");
   grpc_timer_init(
       exec_ctx, &t->keepalive_watchdog_timer,
@@ -2499,7 +2732,7 @@ static void start_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void finish_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_PINGING) {
     if (error == GRPC_ERROR_NONE) {
       t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_WAITING;
@@ -2516,7 +2749,7 @@ static void finish_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void keepalive_watchdog_fired_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                             grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   if (t->keepalive_state == GRPC_CHTTP2_KEEPALIVE_STATE_PINGING) {
     if (error == GRPC_ERROR_NONE) {
       t->keepalive_state = GRPC_CHTTP2_KEEPALIVE_STATE_DYING;
@@ -2583,7 +2816,7 @@ static void reset_byte_stream(grpc_exec_ctx *exec_ctx, void *arg,
     GRPC_ERROR_UNREF(s->byte_stream_error);
     s->byte_stream_error = GRPC_ERROR_NONE;
     grpc_chttp2_cancel_stream(exec_ctx, s->t, s, GRPC_ERROR_REF(error));
-    s->byte_stream_error = error;
+    s->byte_stream_error = GRPC_ERROR_REF(error);
   }
 }
 
@@ -2597,7 +2830,8 @@ static void incoming_byte_stream_unref(grpc_exec_ctx *exec_ctx,
 static void incoming_byte_stream_next_locked(grpc_exec_ctx *exec_ctx,
                                              void *argp,
                                              grpc_error *error_ignored) {
-  grpc_chttp2_incoming_byte_stream *bs = argp;
+  grpc_chttp2_incoming_byte_stream *bs =
+      (grpc_chttp2_incoming_byte_stream *)argp;
   grpc_chttp2_transport *t = bs->transport;
   grpc_chttp2_stream *s = bs->stream;
 
@@ -2680,29 +2914,31 @@ static grpc_error *incoming_byte_stream_pull(grpc_exec_ctx *exec_ctx,
   grpc_error *error;
 
   if (s->unprocessed_incoming_frames_buffer.length > 0) {
-    if (s->stream_compression_recv_enabled &&
-        !s->unprocessed_incoming_frames_decompressed) {
+    if (!s->unprocessed_incoming_frames_decompressed) {
       bool end_of_context;
       if (!s->stream_decompression_ctx) {
         s->stream_decompression_ctx = grpc_stream_compression_context_create(
-            GRPC_STREAM_COMPRESSION_DECOMPRESS);
+            s->stream_decompression_method);
       }
       if (!grpc_stream_decompress(s->stream_decompression_ctx,
                                   &s->unprocessed_incoming_frames_buffer,
-                                  s->decompressed_data_buffer, NULL, MAX_SIZE_T,
-                                  &end_of_context)) {
+                                  &s->decompressed_data_buffer, NULL,
+                                  MAX_SIZE_T, &end_of_context)) {
         error =
             GRPC_ERROR_CREATE_FROM_STATIC_STRING("Stream decompression error.");
         return error;
       }
       GPR_ASSERT(s->unprocessed_incoming_frames_buffer.length == 0);
       grpc_slice_buffer_swap(&s->unprocessed_incoming_frames_buffer,
-                             s->decompressed_data_buffer);
+                             &s->decompressed_data_buffer);
       s->unprocessed_incoming_frames_decompressed = true;
       if (end_of_context) {
         grpc_stream_compression_context_destroy(s->stream_decompression_ctx);
         s->stream_decompression_ctx = NULL;
       }
+      if (s->unprocessed_incoming_frames_buffer.length == 0) {
+        *slice = grpc_empty_slice();
+      }
     }
     error = grpc_deframe_unprocessed_incoming_frames(
         exec_ctx, &s->data_parser, s, &s->unprocessed_incoming_frames_buffer,
@@ -2804,7 +3040,8 @@ static const grpc_byte_stream_vtable grpc_chttp2_incoming_byte_stream_vtable = {
 static void incoming_byte_stream_destroy_locked(grpc_exec_ctx *exec_ctx,
                                                 void *byte_stream,
                                                 grpc_error *error_ignored) {
-  grpc_chttp2_incoming_byte_stream *bs = byte_stream;
+  grpc_chttp2_incoming_byte_stream *bs =
+      (grpc_chttp2_incoming_byte_stream *)byte_stream;
   grpc_chttp2_stream *s = bs->stream;
   grpc_chttp2_transport *t = s->t;
 
@@ -2819,7 +3056,8 @@ grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create(
     grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_stream *s,
     uint32_t frame_size, uint32_t flags) {
   grpc_chttp2_incoming_byte_stream *incoming_byte_stream =
-      gpr_malloc(sizeof(*incoming_byte_stream));
+      (grpc_chttp2_incoming_byte_stream *)gpr_malloc(
+          sizeof(*incoming_byte_stream));
   incoming_byte_stream->base.length = frame_size;
   incoming_byte_stream->remaining_bytes = frame_size;
   incoming_byte_stream->base.flags = flags;
@@ -2860,7 +3098,7 @@ static void post_destructive_reclaimer(grpc_exec_ctx *exec_ctx,
 
 static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   if (error == GRPC_ERROR_NONE &&
       grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
     /* Channel with no active streams: send a goaway to try and make it
@@ -2890,11 +3128,12 @@ static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void destructive_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error) {
-  grpc_chttp2_transport *t = arg;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)arg;
   size_t n = grpc_chttp2_stream_map_size(&t->stream_map);
   t->destructive_reclaimer_registered = false;
   if (error == GRPC_ERROR_NONE && n > 0) {
-    grpc_chttp2_stream *s = grpc_chttp2_stream_map_rand(&t->stream_map);
+    grpc_chttp2_stream *s =
+        (grpc_chttp2_stream *)grpc_chttp2_stream_map_rand(&t->stream_map);
     if (GRPC_TRACER_ON(grpc_resource_quota_trace)) {
       gpr_log(GPR_DEBUG, "HTTP2: %s - abandon stream id %d", t->peer_string,
               s->id);
@@ -2920,16 +3159,58 @@ static void destructive_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
 }
 
 /*******************************************************************************
- * INTEGRATION GLUE
+ * MONITORING
  */
 
-static char *chttp2_get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
-  return gpr_strdup(((grpc_chttp2_transport *)t)->peer_string);
+const char *grpc_chttp2_initiate_write_reason_string(
+    grpc_chttp2_initiate_write_reason reason) {
+  switch (reason) {
+    case GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE:
+      return "INITIAL_WRITE";
+    case GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM:
+      return "START_NEW_STREAM";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE:
+      return "SEND_MESSAGE";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA:
+      return "SEND_INITIAL_METADATA";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA:
+      return "SEND_TRAILING_METADATA";
+    case GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING:
+      return "RETRY_SEND_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS:
+      return "CONTINUE_PINGS";
+    case GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT:
+      return "GOAWAY_SENT";
+    case GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM:
+      return "RST_STREAM";
+    case GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API:
+      return "CLOSE_FROM_API";
+    case GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL:
+      return "STREAM_FLOW_CONTROL";
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL:
+      return "TRANSPORT_FLOW_CONTROL";
+    case GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS:
+      return "SEND_SETTINGS";
+    case GRPC_CHTTP2_INITIATE_WRITE_BDP_ESTIMATOR_PING:
+      return "BDP_ESTIMATOR_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING:
+      return "FLOW_CONTROL_UNSTALLED_BY_SETTING";
+    case GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE:
+      return "FLOW_CONTROL_UNSTALLED_BY_UPDATE";
+    case GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING:
+      return "APPLICATION_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING:
+      return "KEEPALIVE_PING";
+    case GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED:
+      return "TRANSPORT_FLOW_CONTROL_UNSTALLED";
+    case GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE:
+      return "PING_RESPONSE";
+    case GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM:
+      return "FORCE_RST_STREAM";
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
 }
 
-/*******************************************************************************
- * MONITORING
- */
 static grpc_endpoint *chttp2_get_endpoint(grpc_exec_ctx *exec_ctx,
                                           grpc_transport *t) {
   return ((grpc_chttp2_transport *)t)->ep;
@@ -2944,13 +3225,15 @@ static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
                                              perform_transport_op,
                                              destroy_stream,
                                              destroy_transport,
-                                             chttp2_get_peer,
                                              chttp2_get_endpoint};
 
+static const grpc_transport_vtable *get_vtable(void) { return &vtable; }
+
 grpc_transport *grpc_create_chttp2_transport(
     grpc_exec_ctx *exec_ctx, const grpc_channel_args *channel_args,
     grpc_endpoint *ep, int is_client) {
-  grpc_chttp2_transport *t = gpr_zalloc(sizeof(grpc_chttp2_transport));
+  grpc_chttp2_transport *t =
+      (grpc_chttp2_transport *)gpr_zalloc(sizeof(grpc_chttp2_transport));
   init_transport(exec_ctx, t, channel_args, ep, is_client != 0);
   return &t->base;
 }
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.h b/src/core/ext/transport/chttp2/transport/chttp2_transport.h
index 0c4e2a91c0..55fb1a8343 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.h
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.h
@@ -25,6 +25,7 @@
 
 extern grpc_tracer_flag grpc_http_trace;
 extern grpc_tracer_flag grpc_flowctl_trace;
+extern grpc_tracer_flag grpc_trace_http2_stream_state;
 
 #ifndef NDEBUG
 extern grpc_tracer_flag grpc_trace_chttp2_refcount;
diff --git a/src/core/ext/transport/chttp2/transport/flow_control.c b/src/core/ext/transport/chttp2/transport/flow_control.c
index 8dbdd1290a..569a6349d3 100644
--- a/src/core/ext/transport/chttp2/transport/flow_control.c
+++ b/src/core/ext/transport/chttp2/transport/flow_control.c
@@ -18,6 +18,7 @@
 
 #include "src/core/ext/transport/chttp2/transport/internal.h"
 
+#include <limits.h>
 #include <math.h>
 #include <string.h>
 
@@ -59,24 +60,24 @@ static void pretrace(shadow_flow_control* shadow_fc,
 
 #define TRACE_PADDING 30
 
-static char* fmt_int64_diff_str(int64_t old, int64_t new) {
+static char* fmt_int64_diff_str(int64_t old_val, int64_t new_val) {
   char* str;
-  if (old != new) {
-    gpr_asprintf(&str, "%" PRId64 " -> %" PRId64 "", old, new);
+  if (old_val != new_val) {
+    gpr_asprintf(&str, "%" PRId64 " -> %" PRId64 "", old_val, new_val);
   } else {
-    gpr_asprintf(&str, "%" PRId64 "", old);
+    gpr_asprintf(&str, "%" PRId64 "", old_val);
   }
   char* str_lp = gpr_leftpad(str, ' ', TRACE_PADDING);
   gpr_free(str);
   return str_lp;
 }
 
-static char* fmt_uint32_diff_str(uint32_t old, uint32_t new) {
+static char* fmt_uint32_diff_str(uint32_t old_val, uint32_t new_val) {
   char* str;
-  if (new > 0 && old != new) {
-    gpr_asprintf(&str, "%" PRIu32 " -> %" PRIu32 "", old, new);
+  if (new_val > 0 && old_val != new_val) {
+    gpr_asprintf(&str, "%" PRIu32 " -> %" PRIu32 "", old_val, new_val);
   } else {
-    gpr_asprintf(&str, "%" PRIu32 "", old);
+    gpr_asprintf(&str, "%" PRIu32 "", old_val);
   }
   char* str_lp = gpr_leftpad(str, ' ', TRACE_PADDING);
   gpr_free(str);
@@ -482,8 +483,9 @@ grpc_chttp2_flowctl_action grpc_chttp2_flowctl_get_bdp_action(
     double bw_dbl = -1;
     if (grpc_bdp_estimator_get_bw(&tfc->bdp_estimator, &bw_dbl)) {
       // we target the max of BDP or bandwidth in microseconds.
-      int32_t frame_size =
-          GPR_CLAMP(GPR_MAX((int32_t)bw_dbl / 1000, bdp), 16384, 16777215);
+      int32_t frame_size = (int32_t)GPR_CLAMP(
+          GPR_MAX((int32_t)GPR_CLAMP(bw_dbl, 0, INT_MAX) / 1000, bdp), 16384,
+          16777215);
       grpc_chttp2_flowctl_urgency frame_size_urgency = delta_is_significant(
           tfc, frame_size, GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE);
       if (frame_size_urgency != GRPC_CHTTP2_FLOWCTL_NO_ACTION_NEEDED) {
diff --git a/src/core/ext/transport/chttp2/transport/frame_data.c b/src/core/ext/transport/chttp2/transport/frame_data.c
index 222d2177b2..73aaab1802 100644
--- a/src/core/ext/transport/chttp2/transport/frame_data.c
+++ b/src/core/ext/transport/chttp2/transport/frame_data.c
@@ -210,7 +210,7 @@ grpc_error *grpc_deframe_unprocessed_incoming_frames(
 
         if (cur != end) {
           grpc_slice_buffer_undo_take_first(
-              &s->unprocessed_incoming_frames_buffer,
+              slices,
               grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
         }
         grpc_slice_unref_internal(exec_ctx, slice);
@@ -277,7 +277,7 @@ grpc_error *grpc_deframe_unprocessed_incoming_frames(
           p->state = GRPC_CHTTP2_DATA_FH_0;
           cur += p->frame_size;
           grpc_slice_buffer_undo_take_first(
-              &s->unprocessed_incoming_frames_buffer,
+              slices,
               grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
           grpc_slice_unref_internal(exec_ctx, slice);
           return GRPC_ERROR_NONE;
diff --git a/src/core/ext/transport/chttp2/transport/frame_goaway.c b/src/core/ext/transport/chttp2/transport/frame_goaway.c
index 4bce84f21c..78ec08e177 100644
--- a/src/core/ext/transport/chttp2/transport/frame_goaway.c
+++ b/src/core/ext/transport/chttp2/transport/frame_goaway.c
@@ -46,7 +46,7 @@ grpc_error *grpc_chttp2_goaway_parser_begin_frame(grpc_chttp2_goaway_parser *p,
 
   gpr_free(p->debug_data);
   p->debug_length = length - 8;
-  p->debug_data = gpr_malloc(p->debug_length);
+  p->debug_data = (char *)gpr_malloc(p->debug_length);
   p->debug_pos = 0;
   p->state = GRPC_CHTTP2_GOAWAY_LSI0;
   return GRPC_ERROR_NONE;
@@ -60,7 +60,7 @@ grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
   uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
   uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
-  grpc_chttp2_goaway_parser *p = parser;
+  grpc_chttp2_goaway_parser *p = (grpc_chttp2_goaway_parser *)parser;
 
   switch (p->state) {
     case GRPC_CHTTP2_GOAWAY_LSI0:
diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.c b/src/core/ext/transport/chttp2/transport/frame_ping.c
index 3d7c6fbfad..d431d6b2df 100644
--- a/src/core/ext/transport/chttp2/transport/frame_ping.c
+++ b/src/core/ext/transport/chttp2/transport/frame_ping.c
@@ -75,7 +75,7 @@ grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
   uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
   uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
-  grpc_chttp2_ping_parser *p = parser;
+  grpc_chttp2_ping_parser *p = (grpc_chttp2_ping_parser *)parser;
 
   while (p->byte != 8 && cur != end) {
     p->opaque_8bytes |= (((uint64_t)*cur) << (56 - 8 * p->byte));
@@ -92,7 +92,7 @@ grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
         gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
         gpr_timespec next_allowed_ping =
             gpr_time_add(t->ping_recv_state.last_ping_recv_time,
-                         t->ping_policy.min_ping_interval_without_data);
+                         t->ping_policy.min_recv_ping_interval_without_data);
 
         if (t->keepalive_permit_without_calls == 0 &&
             grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
@@ -113,11 +113,12 @@ grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
       if (!g_disable_ping_ack) {
         if (t->ping_ack_count == t->ping_ack_capacity) {
           t->ping_ack_capacity = GPR_MAX(t->ping_ack_capacity * 3 / 2, 3);
-          t->ping_acks = gpr_realloc(
+          t->ping_acks = (uint64_t *)gpr_realloc(
               t->ping_acks, t->ping_ack_capacity * sizeof(*t->ping_acks));
         }
         t->ping_acks[t->ping_ack_count++] = p->opaque_8bytes;
-        grpc_chttp2_initiate_write(exec_ctx, t, "ping response");
+        grpc_chttp2_initiate_write(exec_ctx, t,
+                                   GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE);
       }
     }
   }
diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
index 689dc8935c..0133b6efa2 100644
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
@@ -77,7 +77,7 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
   uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
   uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
-  grpc_chttp2_rst_stream_parser *p = parser;
+  grpc_chttp2_rst_stream_parser *p = (grpc_chttp2_rst_stream_parser *)parser;
 
   while (p->byte != 4 && cur != end) {
     p->reason_bytes[p->byte] = *cur;
diff --git a/src/core/ext/transport/chttp2/transport/frame_settings.c b/src/core/ext/transport/chttp2/transport/frame_settings.c
index 057d3d9ed3..2995bf7310 100644
--- a/src/core/ext/transport/chttp2/transport/frame_settings.c
+++ b/src/core/ext/transport/chttp2/transport/frame_settings.c
@@ -44,7 +44,8 @@ static uint8_t *fill_header(uint8_t *out, uint32_t length, uint8_t flags) {
   return out;
 }
 
-grpc_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
+grpc_slice grpc_chttp2_settings_create(uint32_t *old_settings,
+                                       const uint32_t *new_settings,
                                        uint32_t force_mask, size_t count) {
   size_t i;
   uint32_t n = 0;
@@ -52,21 +53,21 @@ grpc_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
   uint8_t *p;
 
   for (i = 0; i < count; i++) {
-    n += (new[i] != old[i] || (force_mask & (1u << i)) != 0);
+    n += (new_settings[i] != old_settings[i] || (force_mask & (1u << i)) != 0);
   }
 
   output = GRPC_SLICE_MALLOC(9 + 6 * n);
   p = fill_header(GRPC_SLICE_START_PTR(output), 6 * n, 0);
 
   for (i = 0; i < count; i++) {
-    if (new[i] != old[i] || (force_mask & (1u << i)) != 0) {
+    if (new_settings[i] != old_settings[i] || (force_mask & (1u << i)) != 0) {
       *p++ = (uint8_t)(grpc_setting_id_to_wire_id[i] >> 8);
       *p++ = (uint8_t)(grpc_setting_id_to_wire_id[i]);
-      *p++ = (uint8_t)(new[i] >> 24);
-      *p++ = (uint8_t)(new[i] >> 16);
-      *p++ = (uint8_t)(new[i] >> 8);
-      *p++ = (uint8_t)(new[i]);
-      old[i] = new[i];
+      *p++ = (uint8_t)(new_settings[i] >> 24);
+      *p++ = (uint8_t)(new_settings[i] >> 16);
+      *p++ = (uint8_t)(new_settings[i] >> 8);
+      *p++ = (uint8_t)(new_settings[i]);
+      old_settings[i] = new_settings[i];
     }
   }
 
@@ -111,7 +112,7 @@ grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, void *p,
                                               grpc_chttp2_transport *t,
                                               grpc_chttp2_stream *s,
                                               grpc_slice slice, int is_last) {
-  grpc_chttp2_settings_parser *parser = p;
+  grpc_chttp2_settings_parser *parser = (grpc_chttp2_settings_parser *)p;
   const uint8_t *cur = GRPC_SLICE_START_PTR(slice);
   const uint8_t *end = GRPC_SLICE_END_PTR(slice);
   char *msg;
diff --git a/src/core/ext/transport/chttp2/transport/frame_window_update.c b/src/core/ext/transport/chttp2/transport/frame_window_update.c
index 65f3b01d77..c9ab8d1b50 100644
--- a/src/core/ext/transport/chttp2/transport/frame_window_update.c
+++ b/src/core/ext/transport/chttp2/transport/frame_window_update.c
@@ -70,7 +70,8 @@ grpc_error *grpc_chttp2_window_update_parser_parse(
   uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
   uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
-  grpc_chttp2_window_update_parser *p = parser;
+  grpc_chttp2_window_update_parser *p =
+      (grpc_chttp2_window_update_parser *)parser;
 
   while (p->byte != 4 && cur != end) {
     p->amount |= ((uint32_t)*cur) << (8 * (3 - p->byte));
@@ -98,9 +99,10 @@ grpc_error *grpc_chttp2_window_update_parser_parse(
         grpc_chttp2_flowctl_recv_stream_update(
             &t->flow_control, &s->flow_control, received_update);
         if (grpc_chttp2_list_remove_stalled_by_stream(t, s)) {
-          grpc_chttp2_become_writable(
-              exec_ctx, t, s, GRPC_CHTTP2_STREAM_WRITE_INITIATE_UNCOVERED,
-              "stream.read_flow_control");
+          grpc_chttp2_mark_stream_writable(exec_ctx, t, s);
+          grpc_chttp2_initiate_write(
+              exec_ctx, t,
+              GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE);
         }
       }
     } else {
@@ -109,7 +111,9 @@ grpc_error *grpc_chttp2_window_update_parser_parse(
                                                 received_update);
       bool is_zero = t->flow_control.remote_window <= 0;
       if (was_zero && !is_zero) {
-        grpc_chttp2_initiate_write(exec_ctx, t, "new_global_flow_control");
+        grpc_chttp2_initiate_write(
+            exec_ctx, t,
+            GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED);
       }
     }
   }
diff --git a/src/core/ext/transport/chttp2/transport/hpack_encoder.c b/src/core/ext/transport/chttp2/transport/hpack_encoder.c
index a0e748e7b1..a404b664e3 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.c
@@ -33,6 +33,7 @@
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
 #include "src/core/ext/transport/chttp2/transport/hpack_table.h"
 #include "src/core/ext/transport/chttp2/transport/varint.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/transport/metadata.h"
@@ -51,8 +52,10 @@
 #define MAX_DECODER_SPACE_USAGE 512
 
 static grpc_slice_refcount terminal_slice_refcount = {NULL, NULL};
-static const grpc_slice terminal_slice = {&terminal_slice_refcount,
-                                          .data.refcounted = {0, 0}};
+static const grpc_slice terminal_slice = {
+    &terminal_slice_refcount, /* refcount */
+    {{0, 0}}                  /* data.refcounted */
+};
 
 extern grpc_tracer_flag grpc_http_trace;
 
@@ -269,8 +272,10 @@ static void add_elem(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
   }
 }
 
-static void emit_indexed(grpc_chttp2_hpack_compressor *c, uint32_t elem_index,
+static void emit_indexed(grpc_exec_ctx *exec_ctx,
+                         grpc_chttp2_hpack_compressor *c, uint32_t elem_index,
                          framer_state *st) {
+  GRPC_STATS_INC_HPACK_SEND_INDEXED(exec_ctx);
   uint32_t len = GRPC_CHTTP2_VARINT_LENGTH(elem_index, 1);
   GRPC_CHTTP2_WRITE_VARINT(elem_index, 1, 0x80, add_tiny_header_data(st, len),
                            len);
@@ -282,30 +287,31 @@ typedef struct {
   bool insert_null_before_wire_value;
 } wire_value;
 
-static wire_value get_wire_value(grpc_mdelem elem, bool true_binary_enabled) {
+static wire_value get_wire_value(grpc_exec_ctx *exec_ctx, grpc_mdelem elem,
+                                 bool true_binary_enabled) {
+  wire_value wire_val;
   if (grpc_is_binary_header(GRPC_MDKEY(elem))) {
     if (true_binary_enabled) {
-      return (wire_value){
-          .huffman_prefix = 0x00,
-          .insert_null_before_wire_value = true,
-          .data = grpc_slice_ref_internal(GRPC_MDVALUE(elem)),
-      };
+      GRPC_STATS_INC_HPACK_SEND_BINARY(exec_ctx);
+      wire_val.huffman_prefix = 0x00;
+      wire_val.insert_null_before_wire_value = true;
+      wire_val.data = grpc_slice_ref_internal(GRPC_MDVALUE(elem));
+
     } else {
-      return (wire_value){
-          .huffman_prefix = 0x80,
-          .insert_null_before_wire_value = false,
-          .data = grpc_chttp2_base64_encode_and_huffman_compress(
-              GRPC_MDVALUE(elem)),
-      };
+      GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64(exec_ctx);
+      wire_val.huffman_prefix = 0x80;
+      wire_val.insert_null_before_wire_value = false;
+      wire_val.data =
+          grpc_chttp2_base64_encode_and_huffman_compress(GRPC_MDVALUE(elem));
     }
   } else {
     /* TODO(ctiller): opportunistically compress non-binary headers */
-    return (wire_value){
-        .huffman_prefix = 0x00,
-        .insert_null_before_wire_value = false,
-        .data = grpc_slice_ref_internal(GRPC_MDVALUE(elem)),
-    };
+    GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED(exec_ctx);
+    wire_val.huffman_prefix = 0x00;
+    wire_val.insert_null_before_wire_value = false;
+    wire_val.data = grpc_slice_ref_internal(GRPC_MDVALUE(elem));
   }
+  return wire_val;
 }
 
 static size_t wire_value_length(wire_value v) {
@@ -317,11 +323,14 @@ static void add_wire_value(framer_state *st, wire_value v) {
   add_header_data(st, v.data);
 }
 
-static void emit_lithdr_incidx(grpc_chttp2_hpack_compressor *c,
+static void emit_lithdr_incidx(grpc_exec_ctx *exec_ctx,
+                               grpc_chttp2_hpack_compressor *c,
                                uint32_t key_index, grpc_mdelem elem,
                                framer_state *st) {
+  GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX(exec_ctx);
   uint32_t len_pfx = GRPC_CHTTP2_VARINT_LENGTH(key_index, 2);
-  wire_value value = get_wire_value(elem, st->use_true_binary_metadata);
+  wire_value value =
+      get_wire_value(exec_ctx, elem, st->use_true_binary_metadata);
   size_t len_val = wire_value_length(value);
   uint32_t len_val_len;
   GPR_ASSERT(len_val <= UINT32_MAX);
@@ -333,11 +342,14 @@ static void emit_lithdr_incidx(grpc_chttp2_hpack_compressor *c,
   add_wire_value(st, value);
 }
 
-static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
+static void emit_lithdr_noidx(grpc_exec_ctx *exec_ctx,
+                              grpc_chttp2_hpack_compressor *c,
                               uint32_t key_index, grpc_mdelem elem,
                               framer_state *st) {
+  GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX(exec_ctx);
   uint32_t len_pfx = GRPC_CHTTP2_VARINT_LENGTH(key_index, 4);
-  wire_value value = get_wire_value(elem, st->use_true_binary_metadata);
+  wire_value value =
+      get_wire_value(exec_ctx, elem, st->use_true_binary_metadata);
   size_t len_val = wire_value_length(value);
   uint32_t len_val_len;
   GPR_ASSERT(len_val <= UINT32_MAX);
@@ -349,10 +361,14 @@ static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
   add_wire_value(st, value);
 }
 
-static void emit_lithdr_incidx_v(grpc_chttp2_hpack_compressor *c,
+static void emit_lithdr_incidx_v(grpc_exec_ctx *exec_ctx,
+                                 grpc_chttp2_hpack_compressor *c,
                                  grpc_mdelem elem, framer_state *st) {
+  GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V(exec_ctx);
+  GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED(exec_ctx);
   uint32_t len_key = (uint32_t)GRPC_SLICE_LENGTH(GRPC_MDKEY(elem));
-  wire_value value = get_wire_value(elem, st->use_true_binary_metadata);
+  wire_value value =
+      get_wire_value(exec_ctx, elem, st->use_true_binary_metadata);
   uint32_t len_val = (uint32_t)wire_value_length(value);
   uint32_t len_key_len = GRPC_CHTTP2_VARINT_LENGTH(len_key, 1);
   uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
@@ -367,10 +383,14 @@ static void emit_lithdr_incidx_v(grpc_chttp2_hpack_compressor *c,
   add_wire_value(st, value);
 }
 
-static void emit_lithdr_noidx_v(grpc_chttp2_hpack_compressor *c,
+static void emit_lithdr_noidx_v(grpc_exec_ctx *exec_ctx,
+                                grpc_chttp2_hpack_compressor *c,
                                 grpc_mdelem elem, framer_state *st) {
+  GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V(exec_ctx);
+  GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED(exec_ctx);
   uint32_t len_key = (uint32_t)GRPC_SLICE_LENGTH(GRPC_MDKEY(elem));
-  wire_value value = get_wire_value(elem, st->use_true_binary_metadata);
+  wire_value value =
+      get_wire_value(exec_ctx, elem, st->use_true_binary_metadata);
   uint32_t len_val = (uint32_t)wire_value_length(value);
   uint32_t len_key_len = GRPC_CHTTP2_VARINT_LENGTH(len_key, 1);
   uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
@@ -423,7 +443,7 @@ static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
     gpr_free(v);
   }
   if (!GRPC_MDELEM_IS_INTERNED(elem)) {
-    emit_lithdr_noidx_v(c, elem, st);
+    emit_lithdr_noidx_v(exec_ctx, c, elem, st);
     return;
   }
 
@@ -445,16 +465,16 @@ static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
   if (grpc_mdelem_eq(c->entries_elems[HASH_FRAGMENT_2(elem_hash)], elem) &&
       c->indices_elems[HASH_FRAGMENT_2(elem_hash)] > c->tail_remote_index) {
     /* HIT: complete element (first cuckoo hash) */
-    emit_indexed(c, dynidx(c, c->indices_elems[HASH_FRAGMENT_2(elem_hash)]),
-                 st);
+    emit_indexed(exec_ctx, c,
+                 dynidx(c, c->indices_elems[HASH_FRAGMENT_2(elem_hash)]), st);
     return;
   }
 
   if (grpc_mdelem_eq(c->entries_elems[HASH_FRAGMENT_3(elem_hash)], elem) &&
       c->indices_elems[HASH_FRAGMENT_3(elem_hash)] > c->tail_remote_index) {
     /* HIT: complete element (second cuckoo hash) */
-    emit_indexed(c, dynidx(c, c->indices_elems[HASH_FRAGMENT_3(elem_hash)]),
-                 st);
+    emit_indexed(exec_ctx, c,
+                 dynidx(c, c->indices_elems[HASH_FRAGMENT_3(elem_hash)]), st);
     return;
   }
 
@@ -472,11 +492,11 @@ static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
       indices_key > c->tail_remote_index) {
     /* HIT: key (first cuckoo hash) */
     if (should_add_elem) {
-      emit_lithdr_incidx(c, dynidx(c, indices_key), elem, st);
+      emit_lithdr_incidx(exec_ctx, c, dynidx(c, indices_key), elem, st);
       add_elem(exec_ctx, c, elem);
       return;
     } else {
-      emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
+      emit_lithdr_noidx(exec_ctx, c, dynidx(c, indices_key), elem, st);
       return;
     }
     GPR_UNREACHABLE_CODE(return );
@@ -488,11 +508,11 @@ static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
       indices_key > c->tail_remote_index) {
     /* HIT: key (first cuckoo hash) */
     if (should_add_elem) {
-      emit_lithdr_incidx(c, dynidx(c, indices_key), elem, st);
+      emit_lithdr_incidx(exec_ctx, c, dynidx(c, indices_key), elem, st);
       add_elem(exec_ctx, c, elem);
       return;
     } else {
-      emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
+      emit_lithdr_noidx(exec_ctx, c, dynidx(c, indices_key), elem, st);
       return;
     }
     GPR_UNREACHABLE_CODE(return );
@@ -501,11 +521,11 @@ static void hpack_enc(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_compressor *c,
   /* no elem, key in the table... fall back to literal emission */
 
   if (should_add_elem) {
-    emit_lithdr_incidx_v(c, elem, st);
+    emit_lithdr_incidx_v(exec_ctx, c, elem, st);
     add_elem(exec_ctx, c, elem);
     return;
   } else {
-    emit_lithdr_noidx_v(c, elem, st);
+    emit_lithdr_noidx_v(exec_ctx, c, elem, st);
     return;
   }
   GPR_UNREACHABLE_CODE(return );
@@ -536,7 +556,7 @@ void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c) {
   c->max_table_elems = c->cap_table_elems;
   c->max_usable_size = GRPC_CHTTP2_HPACKC_INITIAL_TABLE_SIZE;
   c->table_elem_size =
-      gpr_malloc(sizeof(*c->table_elem_size) * c->cap_table_elems);
+      (uint16_t *)gpr_malloc(sizeof(*c->table_elem_size) * c->cap_table_elems);
   memset(c->table_elem_size, 0,
          sizeof(*c->table_elem_size) * c->cap_table_elems);
   for (size_t i = 0; i < GPR_ARRAY_SIZE(c->entries_keys); i++) {
@@ -564,7 +584,8 @@ void grpc_chttp2_hpack_compressor_set_max_usable_size(
 }
 
 static void rebuild_elems(grpc_chttp2_hpack_compressor *c, uint32_t new_cap) {
-  uint16_t *table_elem_size = gpr_malloc(sizeof(*table_elem_size) * new_cap);
+  uint16_t *table_elem_size =
+      (uint16_t *)gpr_malloc(sizeof(*table_elem_size) * new_cap);
   uint32_t i;
 
   memset(table_elem_size, 0, sizeof(*table_elem_size) * new_cap);
diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.c b/src/core/ext/transport/chttp2/transport/hpack_parser.c
index 7f37365558..3d1df19bc3 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.c
@@ -30,6 +30,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/ext/transport/chttp2/transport/bin_encoder.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
@@ -777,8 +778,7 @@ static grpc_error *parse_stream_dep0(grpc_exec_ctx *exec_ctx,
   return parse_stream_dep1(exec_ctx, p, cur + 1, end);
 }
 
-/* emit an indexed field; for now just logs it to console; jumps to
-   begin the next field on completion */
+/* emit an indexed field; jumps to begin the next field on completion */
 static grpc_error *finish_indexed_field(grpc_exec_ctx *exec_ctx,
                                         grpc_chttp2_hpack_parser *p,
                                         const uint8_t *cur,
@@ -792,6 +792,7 @@ static grpc_error *finish_indexed_field(grpc_exec_ctx *exec_ctx,
         GRPC_ERROR_INT_SIZE, (intptr_t)p->table.num_ents);
   }
   GRPC_MDELEM_REF(md);
+  GRPC_STATS_INC_HPACK_RECV_INDEXED(exec_ctx);
   grpc_error *err = on_hdr(exec_ctx, p, md, 0);
   if (err != GRPC_ERROR_NONE) return err;
   return parse_begin(exec_ctx, p, cur, end);
@@ -820,14 +821,14 @@ static grpc_error *parse_indexed_field_x(grpc_exec_ctx *exec_ctx,
   return parse_value0(exec_ctx, p, cur + 1, end);
 }
 
-/* finish a literal header with incremental indexing: just log, and jump to '
-   begin */
+/* finish a literal header with incremental indexing */
 static grpc_error *finish_lithdr_incidx(grpc_exec_ctx *exec_ctx,
                                         grpc_chttp2_hpack_parser *p,
                                         const uint8_t *cur,
                                         const uint8_t *end) {
   grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, grpc_slice_ref_internal(GRPC_MDKEY(md)),
@@ -842,6 +843,7 @@ static grpc_error *finish_lithdr_incidx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, take_string(exec_ctx, p, &p->key, true),
@@ -898,6 +900,7 @@ static grpc_error *finish_lithdr_notidx(grpc_exec_ctx *exec_ctx,
                                         const uint8_t *end) {
   grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, grpc_slice_ref_internal(GRPC_MDKEY(md)),
@@ -912,6 +915,7 @@ static grpc_error *finish_lithdr_notidx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, take_string(exec_ctx, p, &p->key, true),
@@ -968,6 +972,7 @@ static grpc_error *finish_lithdr_nvridx(grpc_exec_ctx *exec_ctx,
                                         const uint8_t *end) {
   grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
   GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, grpc_slice_ref_internal(GRPC_MDKEY(md)),
@@ -982,6 +987,7 @@ static grpc_error *finish_lithdr_nvridx_v(grpc_exec_ctx *exec_ctx,
                                           grpc_chttp2_hpack_parser *p,
                                           const uint8_t *cur,
                                           const uint8_t *end) {
+  GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V(exec_ctx);
   grpc_error *err = on_hdr(
       exec_ctx, p,
       grpc_mdelem_from_slices(exec_ctx, take_string(exec_ctx, p, &p->key, true),
@@ -1284,7 +1290,7 @@ static void append_bytes(grpc_chttp2_hpack_parser_string *str,
     GPR_ASSERT(str->data.copied.length + length <= UINT32_MAX);
     str->data.copied.capacity = (uint32_t)(str->data.copied.length + length);
     str->data.copied.str =
-        gpr_realloc(str->data.copied.str, str->data.copied.capacity);
+        (char *)gpr_realloc(str->data.copied.str, str->data.copied.capacity);
   }
   memcpy(str->data.copied.str + str->data.copied.length, data, length);
   GPR_ASSERT(length <= UINT32_MAX - str->data.copied.length);
@@ -1310,9 +1316,11 @@ static grpc_error *append_string(grpc_exec_ctx *exec_ctx,
         /* 'true-binary' case */
         ++cur;
         p->binary = NOT_BINARY;
+        GRPC_STATS_INC_HPACK_RECV_BINARY(exec_ctx);
         append_bytes(str, cur, (size_t)(end - cur));
         return GRPC_ERROR_NONE;
       }
+      GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64(exec_ctx);
     /* fallthrough */
     b64_byte0:
     case B64_BYTE0:
@@ -1510,6 +1518,7 @@ static grpc_error *begin_parse_string(grpc_exec_ctx *exec_ctx,
                                       grpc_chttp2_hpack_parser_string *str) {
   if (!p->huff && binary == NOT_BINARY && (end - cur) >= (intptr_t)p->strlen &&
       p->current_slice_refcount != NULL) {
+    GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED(exec_ctx);
     str->copied = false;
     str->data.referenced.refcount = p->current_slice_refcount;
     str->data.referenced.data.refcounted.bytes = (uint8_t *)cur;
@@ -1523,6 +1532,20 @@ static grpc_error *begin_parse_string(grpc_exec_ctx *exec_ctx,
   p->parsing.str = str;
   p->huff_state = 0;
   p->binary = binary;
+  switch (p->binary) {
+    case NOT_BINARY:
+      if (p->huff) {
+        GRPC_STATS_INC_HPACK_RECV_HUFFMAN(exec_ctx);
+      } else {
+        GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED(exec_ctx);
+      }
+      break;
+    case BINARY_BEGIN:
+      /* stats incremented later: don't know true binary or not */
+      break;
+    default:
+      abort();
+  }
   return parse_string(exec_ctx, p, cur, end);
 }
 
@@ -1643,24 +1666,38 @@ static const maybe_complete_func_type maybe_complete_funcs[] = {
 
 static void force_client_rst_stream(grpc_exec_ctx *exec_ctx, void *sp,
                                     grpc_error *error) {
-  grpc_chttp2_stream *s = sp;
+  grpc_chttp2_stream *s = (grpc_chttp2_stream *)sp;
   grpc_chttp2_transport *t = s->t;
   if (!s->write_closed) {
     grpc_slice_buffer_add(
         &t->qbuf, grpc_chttp2_rst_stream_create(s->id, GRPC_HTTP2_NO_ERROR,
                                                 &s->stats.outgoing));
-    grpc_chttp2_initiate_write(exec_ctx, t, "force_rst_stream");
+    grpc_chttp2_initiate_write(exec_ctx, t,
+                               GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM);
     grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, true, GRPC_ERROR_NONE);
   }
   GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "final_rst");
 }
 
+static void parse_stream_compression_md(grpc_exec_ctx *exec_ctx,
+                                        grpc_chttp2_transport *t,
+                                        grpc_chttp2_stream *s,
+                                        grpc_metadata_batch *initial_metadata) {
+  if (initial_metadata->idx.named.content_encoding == NULL ||
+      grpc_stream_compression_method_parse(
+          GRPC_MDVALUE(initial_metadata->idx.named.content_encoding->md), false,
+          &s->stream_decompression_method) == 0) {
+    s->stream_decompression_method =
+        GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+  }
+}
+
 grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx,
                                             void *hpack_parser,
                                             grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s,
                                             grpc_slice slice, int is_last) {
-  grpc_chttp2_hpack_parser *parser = hpack_parser;
+  grpc_chttp2_hpack_parser *parser = (grpc_chttp2_hpack_parser *)hpack_parser;
   GPR_TIMER_BEGIN("grpc_chttp2_hpack_parser_parse", 0);
   if (s != NULL) {
     s->stats.incoming.header_bytes += GRPC_SLICE_LENGTH(slice);
@@ -1681,9 +1718,16 @@ grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx,
     if (s != NULL) {
       if (parser->is_boundary) {
         if (s->header_frames_received == GPR_ARRAY_SIZE(s->metadata_buffer)) {
+          GPR_TIMER_END("grpc_chttp2_hpack_parser_parse", 0);
           return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
               "Too many trailer frames");
         }
+        /* Process stream compression md element if it exists */
+        if (s->header_frames_received ==
+            0) { /* Only acts on initial metadata */
+          parse_stream_compression_md(exec_ctx, t, s,
+                                      &s->metadata_buffer[0].batch);
+        }
         s->published_metadata[s->header_frames_received] =
             GRPC_METADATA_PUBLISHED_FROM_WIRE;
         maybe_complete_funcs[s->header_frames_received](exec_ctx, t, s);
diff --git a/src/core/ext/transport/chttp2/transport/hpack_table.c b/src/core/ext/transport/chttp2/transport/hpack_table.c
index 944d778011..bbd135a318 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_table.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_table.c
@@ -173,7 +173,7 @@ void grpc_chttp2_hptbl_init(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl) {
       GRPC_CHTTP2_INITIAL_HPACK_TABLE_SIZE;
   tbl->max_entries = tbl->cap_entries =
       entries_for_bytes(tbl->current_table_bytes);
-  tbl->ents = gpr_malloc(sizeof(*tbl->ents) * tbl->cap_entries);
+  tbl->ents = (grpc_mdelem *)gpr_malloc(sizeof(*tbl->ents) * tbl->cap_entries);
   memset(tbl->ents, 0, sizeof(*tbl->ents) * tbl->cap_entries);
   for (i = 1; i <= GRPC_CHTTP2_LAST_STATIC_ENTRY; i++) {
     tbl->static_ents[i - 1] = grpc_mdelem_from_slices(
@@ -228,7 +228,7 @@ static void evict1(grpc_exec_ctx *exec_ctx, grpc_chttp2_hptbl *tbl) {
 }
 
 static void rebuild_ents(grpc_chttp2_hptbl *tbl, uint32_t new_cap) {
-  grpc_mdelem *ents = gpr_malloc(sizeof(*ents) * new_cap);
+  grpc_mdelem *ents = (grpc_mdelem *)gpr_malloc(sizeof(*ents) * new_cap);
   uint32_t i;
 
   for (i = 0; i < tbl->num_ents; i++) {
diff --git a/src/core/ext/transport/chttp2/transport/incoming_metadata.c b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
index cf0a9ca920..ba680a89db 100644
--- a/src/core/ext/transport/chttp2/transport/incoming_metadata.c
+++ b/src/core/ext/transport/chttp2/transport/incoming_metadata.c
@@ -42,8 +42,9 @@ grpc_error *grpc_chttp2_incoming_metadata_buffer_add(
     grpc_mdelem elem) {
   buffer->size += GRPC_MDELEM_LENGTH(elem);
   return grpc_metadata_batch_add_tail(
-      exec_ctx, &buffer->batch,
-      gpr_arena_alloc(buffer->arena, sizeof(grpc_linked_mdelem)), elem);
+      exec_ctx, &buffer->batch, (grpc_linked_mdelem *)gpr_arena_alloc(
+                                    buffer->arena, sizeof(grpc_linked_mdelem)),
+      elem);
 }
 
 grpc_error *grpc_chttp2_incoming_metadata_buffer_replace_or_add(
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index 3c41a8958f..49022155aa 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -79,16 +79,43 @@ typedef enum {
   GRPC_CHTTP2_PCL_COUNT /* must be last */
 } grpc_chttp2_ping_closure_list;
 
+typedef enum {
+  GRPC_CHTTP2_INITIATE_WRITE_INITIAL_WRITE,
+  GRPC_CHTTP2_INITIATE_WRITE_START_NEW_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_MESSAGE,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_INITIAL_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_TRAILING_METADATA,
+  GRPC_CHTTP2_INITIATE_WRITE_RETRY_SEND_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_CONTINUE_PINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_GOAWAY_SENT,
+  GRPC_CHTTP2_INITIATE_WRITE_RST_STREAM,
+  GRPC_CHTTP2_INITIATE_WRITE_CLOSE_FROM_API,
+  GRPC_CHTTP2_INITIATE_WRITE_STREAM_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL,
+  GRPC_CHTTP2_INITIATE_WRITE_SEND_SETTINGS,
+  GRPC_CHTTP2_INITIATE_WRITE_BDP_ESTIMATOR_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_CHTTP2_INITIATE_WRITE_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_CHTTP2_INITIATE_WRITE_APPLICATION_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_KEEPALIVE_PING,
+  GRPC_CHTTP2_INITIATE_WRITE_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_CHTTP2_INITIATE_WRITE_PING_RESPONSE,
+  GRPC_CHTTP2_INITIATE_WRITE_FORCE_RST_STREAM,
+} grpc_chttp2_initiate_write_reason;
+
+const char *grpc_chttp2_initiate_write_reason_string(
+    grpc_chttp2_initiate_write_reason reason);
+
 typedef struct {
   grpc_closure_list lists[GRPC_CHTTP2_PCL_COUNT];
   uint64_t inflight_id;
 } grpc_chttp2_ping_queue;
 
 typedef struct {
-  gpr_timespec min_time_between_pings;
   int max_pings_without_data;
   int max_ping_strikes;
-  gpr_timespec min_ping_interval_without_data;
+  gpr_timespec min_sent_ping_interval_without_data;
+  gpr_timespec min_recv_ping_interval_without_data;
 } grpc_chttp2_repeated_ping_policy;
 
 typedef struct {
@@ -262,6 +289,10 @@ struct grpc_chttp2_transport {
 
   /** write execution state of the transport */
   grpc_chttp2_write_state write_state;
+  /** is this the first write in a series of writes?
+      set when we initiate writing from idle, cleared when we
+      initiate writing from writing+more */
+  bool is_first_write_in_batch;
 
   /** is the transport destroying itself? */
   uint8_t destroying;
@@ -483,6 +514,7 @@ struct grpc_chttp2_stream {
   grpc_slice fetching_slice;
   int64_t next_message_end_offset;
   int64_t flow_controlled_bytes_written;
+  int64_t flow_controlled_bytes_flowed;
   grpc_closure complete_fetch_locked;
   grpc_closure *fetching_send_message_finished;
 
@@ -509,6 +541,8 @@ struct grpc_chttp2_stream {
   /** Are we buffering writes on this stream? If yes, we won't become writable
       until there's enough queued up in the flow_controlled_buffer */
   bool write_buffering;
+  /** Has trailing metadata been received. */
+  bool received_trailing_metadata;
 
   /** the error that resulted in this stream being read-closed */
   grpc_error *read_closed_error;
@@ -553,29 +587,32 @@ struct grpc_chttp2_stream {
 
   grpc_slice_buffer flow_controlled_buffer;
 
+  grpc_chttp2_write_cb *on_flow_controlled_cbs;
   grpc_chttp2_write_cb *on_write_finished_cbs;
   grpc_chttp2_write_cb *finish_after_write;
   size_t sending_bytes;
 
-  /** Whether stream compression send is enabled */
-  bool stream_compression_recv_enabled;
-  /** Whether stream compression recv is enabled */
-  bool stream_compression_send_enabled;
-  /** Whether bytes stored in unprocessed_incoming_byte_stream is decompressed
-   */
-  bool unprocessed_incoming_frames_decompressed;
+  /* Stream compression method to be used. */
+  grpc_stream_compression_method stream_compression_method;
+  /* Stream decompression method to be used. */
+  grpc_stream_compression_method stream_decompression_method;
   /** Stream compression decompress context */
   grpc_stream_compression_context *stream_decompression_ctx;
   /** Stream compression compress context */
   grpc_stream_compression_context *stream_compression_ctx;
 
   /** Buffer storing data that is compressed but not sent */
-  grpc_slice_buffer *compressed_data_buffer;
+  grpc_slice_buffer compressed_data_buffer;
   /** Amount of uncompressed bytes sent out when compressed_data_buffer is
    * emptied */
   size_t uncompressed_data_size;
   /** Temporary buffer storing decompressed data */
-  grpc_slice_buffer *decompressed_data_buffer;
+  grpc_slice_buffer decompressed_data_buffer;
+  /** Whether bytes stored in unprocessed_incoming_byte_stream is decompressed
+   */
+  bool unprocessed_incoming_frames_decompressed;
+  /** gRPC header bytes that are already decompressed */
+  size_t decompressed_header_bytes;
 };
 
 /** Transport writing call flow:
@@ -591,12 +628,16 @@ struct grpc_chttp2_stream {
     The actual call chain is documented in the implementation of this function.
     */
 void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx,
-                                grpc_chttp2_transport *t, const char *reason);
+                                grpc_chttp2_transport *t,
+                                grpc_chttp2_initiate_write_reason reason);
 
-typedef enum {
-  GRPC_CHTTP2_NOTHING_TO_WRITE,
-  GRPC_CHTTP2_PARTIAL_WRITE,
-  GRPC_CHTTP2_FULL_WRITE,
+typedef struct {
+  /** are we writing? */
+  bool writing;
+  /** if writing: was it a complete flush (false) or a partial flush (true) */
+  bool partial;
+  /** did we queue any completions as part of beginning the write */
+  bool early_results_scheduled;
 } grpc_chttp2_begin_write_result;
 
 grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
@@ -838,22 +879,11 @@ void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 void grpc_chttp2_add_ping_strike(grpc_exec_ctx *exec_ctx,
                                  grpc_chttp2_transport *t);
 
-typedef enum {
-  /* don't initiate a transport write, but piggyback on the next one */
-  GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK,
-  /* initiate a covered write */
-  GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
-  /* initiate an uncovered write */
-  GRPC_CHTTP2_STREAM_WRITE_INITIATE_UNCOVERED
-} grpc_chttp2_stream_write_type;
-
 /** add a ref to the stream and add it to the writable list;
     ref will be dropped in writing.c */
-void grpc_chttp2_become_writable(grpc_exec_ctx *exec_ctx,
-                                 grpc_chttp2_transport *t,
-                                 grpc_chttp2_stream *s,
-                                 grpc_chttp2_stream_write_type type,
-                                 const char *reason);
+void grpc_chttp2_mark_stream_writable(grpc_exec_ctx *exec_ctx,
+                                      grpc_chttp2_transport *t,
+                                      grpc_chttp2_stream *s);
 
 void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx,
                                grpc_chttp2_transport *t, grpc_chttp2_stream *s,
diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c
index 18d163ee98..3db1ad4123 100644
--- a/src/core/ext/transport/chttp2/transport/parsing.c
+++ b/src/core/ext/transport/chttp2/transport/parsing.c
@@ -106,7 +106,8 @@ grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
           return err;
         }
         ++cur;
-        ++t->deframe_state;
+        t->deframe_state =
+            (grpc_chttp2_deframe_transport_state)(1 + (int)t->deframe_state);
       }
       if (cur == end) {
         return GRPC_ERROR_NONE;
@@ -382,6 +383,9 @@ error_handler:
     /* t->parser = grpc_chttp2_data_parser_parse;*/
     t->parser = grpc_chttp2_data_parser_parse;
     t->parser_data = &s->data_parser;
+    t->ping_state.pings_before_data_required =
+        t->ping_policy.max_pings_without_data;
+    t->ping_state.last_ping_sent_time = gpr_inf_past(GPR_CLOCK_MONOTONIC);
     return GRPC_ERROR_NONE;
   } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) {
     /* handle stream errors by closing the stream */
@@ -402,7 +406,7 @@ static void free_timeout(void *p) { gpr_free(p); }
 
 static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
                               grpc_mdelem md) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   grpc_chttp2_stream *s = t->incoming_stream;
 
   GPR_TIMER_BEGIN("on_initial_header", 0);
@@ -426,11 +430,12 @@ static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
   }
 
   if (grpc_slice_eq(GRPC_MDKEY(md), GRPC_MDSTR_GRPC_TIMEOUT)) {
-    gpr_timespec *cached_timeout = grpc_mdelem_get_user_data(md, free_timeout);
+    gpr_timespec *cached_timeout =
+        (gpr_timespec *)grpc_mdelem_get_user_data(md, free_timeout);
     gpr_timespec timeout;
     if (cached_timeout == NULL) {
       /* not already parsed: parse it now, and store the result away */
-      cached_timeout = gpr_malloc(sizeof(gpr_timespec));
+      cached_timeout = (gpr_timespec *)gpr_malloc(sizeof(gpr_timespec));
       if (!grpc_http2_decode_timeout(GRPC_MDVALUE(md), cached_timeout)) {
         char *val = grpc_slice_to_c_string(GRPC_MDVALUE(md));
         gpr_log(GPR_ERROR, "Ignoring bad timeout value '%s'", val);
@@ -482,7 +487,7 @@ static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
 
 static void on_trailing_header(grpc_exec_ctx *exec_ctx, void *tp,
                                grpc_mdelem md) {
-  grpc_chttp2_transport *t = tp;
+  grpc_chttp2_transport *t = (grpc_chttp2_transport *)tp;
   grpc_chttp2_stream *s = t->incoming_stream;
 
   GPR_TIMER_BEGIN("on_trailing_header", 0);
@@ -557,6 +562,10 @@ static grpc_error *init_header_frame_parser(grpc_exec_ctx *exec_ctx,
         (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_STREAM) != 0;
   }
 
+  t->ping_state.pings_before_data_required =
+      t->ping_policy.max_pings_without_data;
+  t->ping_state.last_ping_sent_time = gpr_inf_past(GPR_CLOCK_MONOTONIC);
+
   /* could be a new grpc_chttp2_stream or an existing grpc_chttp2_stream */
   s = grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id);
   if (s == NULL) {
@@ -623,6 +632,7 @@ static grpc_error *init_header_frame_parser(grpc_exec_ctx *exec_ctx,
           *s->trailing_metadata_available = true;
         }
         t->hpack_parser.on_header = on_trailing_header;
+        s->received_trailing_metadata = true;
       } else {
         GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "parsing initial_metadata"));
         t->hpack_parser.on_header = on_initial_header;
@@ -631,6 +641,7 @@ static grpc_error *init_header_frame_parser(grpc_exec_ctx *exec_ctx,
     case 1:
       GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "parsing trailing_metadata"));
       t->hpack_parser.on_header = on_trailing_header;
+      s->received_trailing_metadata = true;
       break;
     case 2:
       gpr_log(GPR_ERROR, "too many header frames received");
diff --git a/src/core/ext/transport/chttp2/transport/stream_lists.c b/src/core/ext/transport/chttp2/transport/stream_lists.c
index 7cc85dea9c..47cd22d177 100644
--- a/src/core/ext/transport/chttp2/transport/stream_lists.c
+++ b/src/core/ext/transport/chttp2/transport/stream_lists.c
@@ -20,6 +20,27 @@
 
 #include <grpc/support/log.h>
 
+static char *stream_list_id_string(grpc_chttp2_stream_list_id id) {
+  switch (id) {
+    case GRPC_CHTTP2_LIST_WRITABLE:
+      return "writable";
+    case GRPC_CHTTP2_LIST_WRITING:
+      return "writing";
+    case GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT:
+      return "stalled_by_transport";
+    case GRPC_CHTTP2_LIST_STALLED_BY_STREAM:
+      return "stalled_by_stream";
+    case GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY:
+      return "waiting_for_concurrency";
+    case STREAM_LIST_COUNT:
+      GPR_UNREACHABLE_CODE(return "unknown");
+  }
+  GPR_UNREACHABLE_CODE(return "unknown");
+}
+
+grpc_tracer_flag grpc_trace_http2_stream_state =
+    GRPC_TRACER_INITIALIZER(false, "http2_stream_state");
+
 /* core list management */
 
 static bool stream_list_empty(grpc_chttp2_transport *t,
@@ -44,6 +65,10 @@ static bool stream_list_pop(grpc_chttp2_transport *t,
     s->included[id] = 0;
   }
   *stream = s;
+  if (s && GRPC_TRACER_ON(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_DEBUG, "%p[%d][%s]: pop from %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
   return s != 0;
 }
 
@@ -62,6 +87,10 @@ static void stream_list_remove(grpc_chttp2_transport *t, grpc_chttp2_stream *s,
   } else {
     t->lists[id].tail = s->links[id].prev;
   }
+  if (GRPC_TRACER_ON(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_DEBUG, "%p[%d][%s]: remove from %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
 }
 
 static bool stream_list_maybe_remove(grpc_chttp2_transport *t,
@@ -90,6 +119,10 @@ static void stream_list_add_tail(grpc_chttp2_transport *t,
   }
   t->lists[id].tail = s;
   s->included[id] = 1;
+  if (GRPC_TRACER_ON(grpc_trace_http2_stream_state)) {
+    gpr_log(GPR_DEBUG, "%p[%d][%s]: add to %s", t, s->id,
+            t->is_client ? "cli" : "svr", stream_list_id_string(id));
+  }
 }
 
 static bool stream_list_add(grpc_chttp2_transport *t, grpc_chttp2_stream *s,
@@ -150,17 +183,12 @@ void grpc_chttp2_list_remove_waiting_for_concurrency(grpc_chttp2_transport *t,
 
 void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport *t,
                                                grpc_chttp2_stream *s) {
-  GRPC_FLOW_CONTROL_IF_TRACING(
-      gpr_log(GPR_DEBUG, "stream %u stalled by transport", s->id));
   stream_list_add(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
 }
 
 bool grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport *t,
                                                grpc_chttp2_stream **s) {
-  bool ret = stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
-  GRPC_FLOW_CONTROL_IF_TRACING(if (ret) gpr_log(
-      GPR_DEBUG, "stream %u un-stalled by transport", (*s)->id));
-  return ret;
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT);
 }
 
 void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport *t,
@@ -170,23 +198,15 @@ void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport *t,
 
 void grpc_chttp2_list_add_stalled_by_stream(grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s) {
-  GRPC_FLOW_CONTROL_IF_TRACING(
-      gpr_log(GPR_DEBUG, "stream %u stalled by stream", s->id));
   stream_list_add(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
 }
 
 bool grpc_chttp2_list_pop_stalled_by_stream(grpc_chttp2_transport *t,
                                             grpc_chttp2_stream **s) {
-  bool ret = stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
-  GRPC_FLOW_CONTROL_IF_TRACING(
-      if (ret) gpr_log(GPR_DEBUG, "stream %u un-stalled by stream", (*s)->id));
-  return ret;
+  return stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
 }
 
 bool grpc_chttp2_list_remove_stalled_by_stream(grpc_chttp2_transport *t,
                                                grpc_chttp2_stream *s) {
-  bool ret = stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
-  GRPC_FLOW_CONTROL_IF_TRACING(
-      if (ret) gpr_log(GPR_DEBUG, "stream %u un-stalled by stream", s->id));
-  return ret;
+  return stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_STALLED_BY_STREAM);
 }
diff --git a/src/core/ext/transport/chttp2/transport/stream_map.c b/src/core/ext/transport/chttp2/transport/stream_map.c
index e2f10bc208..d6079a9a33 100644
--- a/src/core/ext/transport/chttp2/transport/stream_map.c
+++ b/src/core/ext/transport/chttp2/transport/stream_map.c
@@ -27,8 +27,8 @@
 void grpc_chttp2_stream_map_init(grpc_chttp2_stream_map *map,
                                  size_t initial_capacity) {
   GPR_ASSERT(initial_capacity > 1);
-  map->keys = gpr_malloc(sizeof(uint32_t) * initial_capacity);
-  map->values = gpr_malloc(sizeof(void *) * initial_capacity);
+  map->keys = (uint32_t *)gpr_malloc(sizeof(uint32_t) * initial_capacity);
+  map->values = (void **)gpr_malloc(sizeof(void *) * initial_capacity);
   map->count = 0;
   map->free = 0;
   map->capacity = initial_capacity;
@@ -72,8 +72,10 @@ void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map *map, uint32_t key,
       /* resize when less than 25% of the table is free, because compaction
          won't help much */
       map->capacity = capacity = 3 * capacity / 2;
-      map->keys = keys = gpr_realloc(keys, capacity * sizeof(uint32_t));
-      map->values = values = gpr_realloc(values, capacity * sizeof(void *));
+      map->keys = keys =
+          (uint32_t *)gpr_realloc(keys, capacity * sizeof(uint32_t));
+      map->values = values =
+          (void **)gpr_realloc(values, capacity * sizeof(void *));
     }
   }
 
diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c
index 410c154206..be1af16019 100644
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@@ -22,6 +22,7 @@
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/transport/http2_errors.h"
@@ -67,7 +68,7 @@ static void maybe_initiate_ping(grpc_exec_ctx *exec_ctx,
   }
   if (t->ping_state.pings_before_data_required == 0 &&
       t->ping_policy.max_pings_without_data != 0) {
-    /* need to send something of substance before sending a ping again */
+    /* need to receive something of substance before sending a ping again */
     if (GRPC_TRACER_ON(grpc_http_trace) ||
         GRPC_TRACER_ON(grpc_bdp_estimator_trace)) {
       gpr_log(GPR_DEBUG, "Ping delayed [%p]: too many recent pings: %d/%d",
@@ -77,11 +78,18 @@ static void maybe_initiate_ping(grpc_exec_ctx *exec_ctx,
     return;
   }
   gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
-  gpr_timespec elapsed = gpr_time_sub(now, t->ping_state.last_ping_sent_time);
-  /*gpr_log(GPR_DEBUG, "elapsed:%d.%09d min:%d.%09d", (int)elapsed.tv_sec,
-          elapsed.tv_nsec, (int)t->ping_policy.min_time_between_pings.tv_sec,
-          (int)t->ping_policy.min_time_between_pings.tv_nsec);*/
-  if (gpr_time_cmp(elapsed, t->ping_policy.min_time_between_pings) < 0) {
+  gpr_timespec next_allowed_ping =
+      gpr_time_add(t->ping_state.last_ping_sent_time,
+                   t->ping_policy.min_sent_ping_interval_without_data);
+  if (t->keepalive_permit_without_calls == 0 &&
+      grpc_chttp2_stream_map_size(&t->stream_map) == 0) {
+    next_allowed_ping = gpr_time_add(t->ping_recv_state.last_ping_recv_time,
+                                     gpr_time_from_seconds(7200, GPR_TIMESPAN));
+  }
+  /* gpr_log(GPR_DEBUG, "next_allowed_ping:%d.%09d now:%d.%09d",
+          (int)next_allowed_ping.tv_sec, (int)next_allowed_ping.tv_nsec,
+          (int)now.tv_sec, (int)now.tv_nsec); */
+  if (gpr_time_cmp(next_allowed_ping, now) > 0) {
     /* not enough elapsed time between successive pings */
     if (GRPC_TRACER_ON(grpc_http_trace) ||
         GRPC_TRACER_ON(grpc_bdp_estimator_trace)) {
@@ -92,9 +100,7 @@ static void maybe_initiate_ping(grpc_exec_ctx *exec_ctx,
     if (!t->ping_state.is_delayed_ping_timer_set) {
       t->ping_state.is_delayed_ping_timer_set = true;
       grpc_timer_init(exec_ctx, &t->ping_state.delayed_ping_timer,
-                      gpr_time_add(t->ping_state.last_ping_sent_time,
-                                   t->ping_policy.min_time_between_pings),
-                      &t->retry_initiate_ping_locked,
+                      next_allowed_ping, &t->retry_initiate_ping_locked,
                       gpr_now(GPR_CLOCK_MONOTONIC));
     }
     return;
@@ -116,20 +122,30 @@ static void maybe_initiate_ping(grpc_exec_ctx *exec_ctx,
                          &pq->lists[GRPC_CHTTP2_PCL_INFLIGHT]);
   grpc_slice_buffer_add(&t->outbuf,
                         grpc_chttp2_ping_create(false, pq->inflight_id));
+  GRPC_STATS_INC_HTTP2_PINGS_SENT(exec_ctx);
   t->ping_state.last_ping_sent_time = now;
+  if (GRPC_TRACER_ON(grpc_http_trace) ||
+      GRPC_TRACER_ON(grpc_bdp_estimator_trace)) {
+    gpr_log(GPR_DEBUG, "Ping sent [%p]: %d/%d", t->peer_string,
+            t->ping_state.pings_before_data_required,
+            t->ping_policy.max_pings_without_data);
+  }
   t->ping_state.pings_before_data_required -=
       (t->ping_state.pings_before_data_required != 0);
 }
 
-static void update_list(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
+static bool update_list(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                         grpc_chttp2_stream *s, int64_t send_bytes,
-                        grpc_chttp2_write_cb **list, grpc_error *error) {
+                        grpc_chttp2_write_cb **list, int64_t *ctr,
+                        grpc_error *error) {
+  bool sched_any = false;
   grpc_chttp2_write_cb *cb = *list;
   *list = NULL;
-  s->flow_controlled_bytes_written += send_bytes;
+  *ctr += send_bytes;
   while (cb) {
     grpc_chttp2_write_cb *next = cb->next;
-    if (cb->call_at_byte <= s->flow_controlled_bytes_written) {
+    if (cb->call_at_byte <= *ctr) {
+      sched_any = true;
       finish_write_cb(exec_ctx, t, s, cb, GRPC_ERROR_REF(error));
     } else {
       add_to_write_list(list, cb);
@@ -137,6 +153,7 @@ static void update_list(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     cb = next;
   }
   GRPC_ERROR_UNREF(error);
+  return sched_any;
 }
 
 static bool stream_ref_if_not_destroyed(gpr_refcount *r) {
@@ -154,23 +171,23 @@ static uint32_t target_write_size(grpc_chttp2_transport *t) {
 }
 
 // Returns true if initial_metadata contains only default headers.
-//
-// TODO(roth): The fact that we hard-code these particular headers here
-// is fairly ugly.  Need some better way to know which headers are
-// default, maybe via a bit in the static metadata table?
 static bool is_default_initial_metadata(grpc_metadata_batch *initial_metadata) {
-  int num_default_fields =
-      (initial_metadata->idx.named.status != NULL) +
-      (initial_metadata->idx.named.content_type != NULL) +
-      (initial_metadata->idx.named.grpc_encoding != NULL) +
-      (initial_metadata->idx.named.grpc_accept_encoding != NULL);
-  return (size_t)num_default_fields == initial_metadata->list.count;
+  return initial_metadata->list.default_count == initial_metadata->list.count;
 }
 
 grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
     grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t) {
   grpc_chttp2_stream *s;
 
+  /* stats histogram counters: we increment these throughout this function,
+     and at the end publish to the central stats histograms */
+  int flow_control_writes = 0;
+  int initial_metadata_writes = 0;
+  int trailing_metadata_writes = 0;
+  int message_writes = 0;
+
+  GRPC_STATS_INC_HTTP2_WRITES_BEGUN(exec_ctx);
+
   GPR_TIMER_BEGIN("grpc_chttp2_begin_write", 0);
 
   if (t->dirtied_local_settings && !t->sent_local_settings) {
@@ -182,6 +199,7 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
     t->force_send_settings = 0;
     t->dirtied_local_settings = 0;
     t->sent_local_settings = 1;
+    GRPC_STATS_INC_HTTP2_SETTINGS_WRITES(exec_ctx);
   }
 
   /* simple writes are queued to qbuf, and flushed here */
@@ -194,20 +212,19 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
 
   if (t->flow_control.remote_window > 0) {
     while (grpc_chttp2_list_pop_stalled_by_transport(t, &s)) {
-      if (!t->closed && grpc_chttp2_list_add_writable_stream(t, s) &&
-          stream_ref_if_not_destroyed(&s->refcount->refs)) {
-        grpc_chttp2_initiate_write(exec_ctx, t, "transport.read_flow_control");
+      if (!t->closed && grpc_chttp2_list_add_writable_stream(t, s)) {
+        stream_ref_if_not_destroyed(&s->refcount->refs);
       }
     }
   }
 
-  bool partial_write = false;
+  grpc_chttp2_begin_write_result result = {false, false, false};
 
   /* for each grpc_chttp2_stream that's become writable, frame it's data
      (according to available window sizes) and add to the output buffer */
   while (true) {
     if (t->outbuf.length > target_write_size(t)) {
-      partial_write = true;
+      result.partial = true;
       break;
     }
 
@@ -252,13 +269,12 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
         grpc_chttp2_encode_header(exec_ctx, &t->hpack_compressor, NULL, 0,
                                   s->send_initial_metadata, &hopt, &t->outbuf);
         now_writing = true;
-        t->ping_state.pings_before_data_required =
-            t->ping_policy.max_pings_without_data;
         if (!t->is_client) {
           t->ping_recv_state.last_ping_recv_time =
               gpr_inf_past(GPR_CLOCK_MONOTONIC);
           t->ping_recv_state.ping_strikes = 0;
         }
+        initial_metadata_writes++;
       } else {
         GRPC_CHTTP2_IF_TRACING(
             gpr_log(GPR_INFO, "not sending initial_metadata (Trailers-Only)"));
@@ -274,10 +290,15 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
               [num_extra_headers_for_trailing_metadata++] =
                   &s->send_initial_metadata->idx.named.content_type->md;
         }
+        trailing_metadata_writes++;
       }
       s->send_initial_metadata = NULL;
       s->sent_initial_metadata = true;
       sent_initial_metadata = true;
+      result.early_results_scheduled = true;
+      grpc_chttp2_complete_closure_step(
+          exec_ctx, t, s, &s->send_initial_metadata_finished, GRPC_ERROR_NONE,
+          "send_initial_metadata_finished");
     }
     /* send any window updates */
     uint32_t stream_announce = grpc_chttp2_flowctl_maybe_send_stream_update(
@@ -286,19 +307,17 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
       grpc_slice_buffer_add(
           &t->outbuf, grpc_chttp2_window_update_create(s->id, stream_announce,
                                                        &s->stats.outgoing));
-      t->ping_state.pings_before_data_required =
-          t->ping_policy.max_pings_without_data;
       if (!t->is_client) {
         t->ping_recv_state.last_ping_recv_time =
             gpr_inf_past(GPR_CLOCK_MONOTONIC);
         t->ping_recv_state.ping_strikes = 0;
       }
+      flow_control_writes++;
     }
     if (sent_initial_metadata) {
       /* send any body bytes, if allowed by flow control */
       if (s->flow_controlled_buffer.length > 0 ||
-          (s->stream_compression_send_enabled &&
-           s->compressed_data_buffer->length > 0)) {
+          s->compressed_data_buffer.length > 0) {
         uint32_t stream_remote_window = (uint32_t)GPR_MAX(
             0,
             s->flow_control.remote_window_delta +
@@ -311,77 +330,61 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
         if (max_outgoing > 0) {
           bool is_last_data_frame = false;
           bool is_last_frame = false;
-          if (s->stream_compression_send_enabled) {
-            while ((s->flow_controlled_buffer.length > 0 ||
-                    s->compressed_data_buffer->length > 0) &&
-                   max_outgoing > 0) {
-              if (s->compressed_data_buffer->length > 0) {
-                uint32_t send_bytes = (uint32_t)GPR_MIN(
-                    max_outgoing, s->compressed_data_buffer->length);
-                is_last_data_frame =
-                    (send_bytes == s->compressed_data_buffer->length &&
-                     s->flow_controlled_buffer.length == 0 &&
-                     s->fetching_send_message == NULL);
-                if (is_last_data_frame && s->send_trailing_metadata != NULL &&
-                    s->stream_compression_ctx != NULL) {
-                  if (!grpc_stream_compress(
-                          s->stream_compression_ctx, &s->flow_controlled_buffer,
-                          s->compressed_data_buffer, NULL, MAX_SIZE_T,
-                          GRPC_STREAM_COMPRESSION_FLUSH_FINISH)) {
-                    gpr_log(GPR_ERROR, "Stream compression failed.");
-                  }
-                  grpc_stream_compression_context_destroy(
-                      s->stream_compression_ctx);
-                  s->stream_compression_ctx = NULL;
-                  /* After finish, bytes in s->compressed_data_buffer may be
-                   * more than max_outgoing. Start another round of the current
-                   * while loop so that send_bytes and is_last_data_frame are
-                   * recalculated. */
-                  continue;
-                }
-                is_last_frame =
-                    is_last_data_frame && s->send_trailing_metadata != NULL &&
-                    grpc_metadata_batch_is_empty(s->send_trailing_metadata);
-                grpc_chttp2_encode_data(s->id, s->compressed_data_buffer,
-                                        send_bytes, is_last_frame,
-                                        &s->stats.outgoing, &t->outbuf);
-                grpc_chttp2_flowctl_sent_data(&t->flow_control,
-                                              &s->flow_control, send_bytes);
-                max_outgoing -= send_bytes;
-                if (s->compressed_data_buffer->length == 0) {
-                  s->sending_bytes += s->uncompressed_data_size;
+          size_t sending_bytes_before = s->sending_bytes;
+          while ((s->flow_controlled_buffer.length > 0 ||
+                  s->compressed_data_buffer.length > 0) &&
+                 max_outgoing > 0) {
+            if (s->compressed_data_buffer.length > 0) {
+              uint32_t send_bytes = (uint32_t)GPR_MIN(
+                  max_outgoing, s->compressed_data_buffer.length);
+              is_last_data_frame =
+                  (send_bytes == s->compressed_data_buffer.length &&
+                   s->flow_controlled_buffer.length == 0 &&
+                   s->fetching_send_message == NULL);
+              if (is_last_data_frame && s->send_trailing_metadata != NULL &&
+                  s->stream_compression_ctx != NULL) {
+                if (!grpc_stream_compress(
+                        s->stream_compression_ctx, &s->flow_controlled_buffer,
+                        &s->compressed_data_buffer, NULL, MAX_SIZE_T,
+                        GRPC_STREAM_COMPRESSION_FLUSH_FINISH)) {
+                  gpr_log(GPR_ERROR, "Stream compression failed.");
                 }
-              } else {
-                if (s->stream_compression_ctx == NULL) {
-                  s->stream_compression_ctx =
-                      grpc_stream_compression_context_create(
-                          GRPC_STREAM_COMPRESSION_COMPRESS);
-                }
-                s->uncompressed_data_size = s->flow_controlled_buffer.length;
-                GPR_ASSERT(grpc_stream_compress(
-                    s->stream_compression_ctx, &s->flow_controlled_buffer,
-                    s->compressed_data_buffer, NULL, MAX_SIZE_T,
-                    GRPC_STREAM_COMPRESSION_FLUSH_SYNC));
-                GPR_ASSERT(s->compressed_data_buffer->length > 0);
+                grpc_stream_compression_context_destroy(
+                    s->stream_compression_ctx);
+                s->stream_compression_ctx = NULL;
+                /* After finish, bytes in s->compressed_data_buffer may be
+                 * more than max_outgoing. Start another round of the current
+                 * while loop so that send_bytes and is_last_data_frame are
+                 * recalculated. */
+                continue;
+              }
+              is_last_frame =
+                  is_last_data_frame && s->send_trailing_metadata != NULL &&
+                  grpc_metadata_batch_is_empty(s->send_trailing_metadata);
+              grpc_chttp2_encode_data(s->id, &s->compressed_data_buffer,
+                                      send_bytes, is_last_frame,
+                                      &s->stats.outgoing, &t->outbuf);
+              grpc_chttp2_flowctl_sent_data(&t->flow_control, &s->flow_control,
+                                            send_bytes);
+              max_outgoing -= send_bytes;
+              if (s->compressed_data_buffer.length == 0) {
+                s->sending_bytes += s->uncompressed_data_size;
+              }
+            } else {
+              if (s->stream_compression_ctx == NULL) {
+                s->stream_compression_ctx =
+                    grpc_stream_compression_context_create(
+                        s->stream_compression_method);
+              }
+              s->uncompressed_data_size = s->flow_controlled_buffer.length;
+              if (!grpc_stream_compress(
+                      s->stream_compression_ctx, &s->flow_controlled_buffer,
+                      &s->compressed_data_buffer, NULL, MAX_SIZE_T,
+                      GRPC_STREAM_COMPRESSION_FLUSH_SYNC)) {
+                gpr_log(GPR_ERROR, "Stream compression failed.");
               }
             }
-          } else {
-            uint32_t send_bytes = (uint32_t)GPR_MIN(
-                max_outgoing, s->flow_controlled_buffer.length);
-            is_last_data_frame = s->fetching_send_message == NULL &&
-                                 send_bytes == s->flow_controlled_buffer.length;
-            is_last_frame =
-                is_last_data_frame && s->send_trailing_metadata != NULL &&
-                grpc_metadata_batch_is_empty(s->send_trailing_metadata);
-            grpc_chttp2_encode_data(s->id, &s->flow_controlled_buffer,
-                                    send_bytes, is_last_frame,
-                                    &s->stats.outgoing, &t->outbuf);
-            grpc_chttp2_flowctl_sent_data(&t->flow_control, &s->flow_control,
-                                          send_bytes);
-            s->sending_bytes += send_bytes;
           }
-          t->ping_state.pings_before_data_required =
-              t->ping_policy.max_pings_without_data;
           if (!t->is_client) {
             t->ping_recv_state.last_ping_recv_time =
                 gpr_inf_past(GPR_CLOCK_MONOTONIC);
@@ -395,14 +398,21 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
                                                     s->id, GRPC_HTTP2_NO_ERROR,
                                                     &s->stats.outgoing));
             }
+            grpc_chttp2_mark_stream_closed(exec_ctx, t, s, !t->is_client, 1,
+                                           GRPC_ERROR_NONE);
           }
+          result.early_results_scheduled |=
+              update_list(exec_ctx, t, s,
+                          (int64_t)(s->sending_bytes - sending_bytes_before),
+                          &s->on_flow_controlled_cbs,
+                          &s->flow_controlled_bytes_flowed, GRPC_ERROR_NONE);
           now_writing = true;
           if (s->flow_controlled_buffer.length > 0 ||
-              (s->stream_compression_send_enabled &&
-               s->compressed_data_buffer->length > 0)) {
+              s->compressed_data_buffer.length > 0) {
             GRPC_CHTTP2_STREAM_REF(s, "chttp2_writing:fork");
             grpc_chttp2_list_add_writable_stream(t, s);
           }
+          message_writes++;
         } else if (t->flow_control.remote_window == 0) {
           grpc_chttp2_list_add_stalled_by_transport(t, s);
           now_writing = true;
@@ -414,8 +424,7 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
       if (s->send_trailing_metadata != NULL &&
           s->fetching_send_message == NULL &&
           s->flow_controlled_buffer.length == 0 &&
-          (!s->stream_compression_send_enabled ||
-           s->compressed_data_buffer->length == 0)) {
+          s->compressed_data_buffer.length == 0) {
         GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_INFO, "sending trailing_metadata"));
         if (grpc_metadata_batch_is_empty(s->send_trailing_metadata)) {
           grpc_chttp2_encode_data(s->id, &s->flow_controlled_buffer, 0, true,
@@ -438,6 +447,7 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
                                     num_extra_headers_for_trailing_metadata,
                                     s->send_trailing_metadata, &hopt,
                                     &t->outbuf);
+          trailing_metadata_writes++;
         }
         s->send_trailing_metadata = NULL;
         s->sent_trailing_metadata = true;
@@ -446,11 +456,25 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
               &t->outbuf, grpc_chttp2_rst_stream_create(
                               s->id, GRPC_HTTP2_NO_ERROR, &s->stats.outgoing));
         }
+        grpc_chttp2_mark_stream_closed(exec_ctx, t, s, !t->is_client, 1,
+                                       GRPC_ERROR_NONE);
         now_writing = true;
+        result.early_results_scheduled = true;
+        grpc_chttp2_complete_closure_step(
+            exec_ctx, t, s, &s->send_trailing_metadata_finished,
+            GRPC_ERROR_NONE, "send_trailing_metadata_finished");
       }
     }
 
     if (now_writing) {
+      GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(
+          exec_ctx, initial_metadata_writes);
+      GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(exec_ctx, message_writes);
+      GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(
+          exec_ctx, trailing_metadata_writes);
+      GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(exec_ctx,
+                                                  flow_control_writes);
+
       if (!grpc_chttp2_list_add_writing_stream(t, s)) {
         /* already in writing list: drop ref */
         GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:already_writing");
@@ -469,8 +493,6 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
     grpc_slice_buffer_add(
         &t->outbuf, grpc_chttp2_window_update_create(0, transport_announce,
                                                      &throwaway_stats));
-    t->ping_state.pings_before_data_required =
-        t->ping_policy.max_pings_without_data;
     if (!t->is_client) {
       t->ping_recv_state.last_ping_recv_time =
           gpr_inf_past(GPR_CLOCK_MONOTONIC);
@@ -488,9 +510,8 @@ grpc_chttp2_begin_write_result grpc_chttp2_begin_write(
 
   GPR_TIMER_END("grpc_chttp2_begin_write", 0);
 
-  return t->outbuf.count > 0 ? (partial_write ? GRPC_CHTTP2_PARTIAL_WRITE
-                                              : GRPC_CHTTP2_FULL_WRITE)
-                             : GRPC_CHTTP2_NOTHING_TO_WRITE;
+  result.writing = t->outbuf.count > 0;
+  return result;
 }
 
 void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
@@ -499,23 +520,12 @@ void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   grpc_chttp2_stream *s;
 
   while (grpc_chttp2_list_pop_writing_stream(t, &s)) {
-    if (s->sent_initial_metadata) {
-      grpc_chttp2_complete_closure_step(
-          exec_ctx, t, s, &s->send_initial_metadata_finished,
-          GRPC_ERROR_REF(error), "send_initial_metadata_finished");
-    }
     if (s->sending_bytes != 0) {
       update_list(exec_ctx, t, s, (int64_t)s->sending_bytes,
-                  &s->on_write_finished_cbs, GRPC_ERROR_REF(error));
+                  &s->on_write_finished_cbs, &s->flow_controlled_bytes_written,
+                  GRPC_ERROR_REF(error));
       s->sending_bytes = 0;
     }
-    if (s->sent_trailing_metadata) {
-      grpc_chttp2_complete_closure_step(
-          exec_ctx, t, s, &s->send_trailing_metadata_finished,
-          GRPC_ERROR_REF(error), "send_trailing_metadata_finished");
-      grpc_chttp2_mark_stream_closed(exec_ctx, t, s, !t->is_client, 1,
-                                     GRPC_ERROR_REF(error));
-    }
     GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:end");
   }
   grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &t->outbuf);
diff --git a/src/core/ext/transport/cronet/transport/cronet_transport.c b/src/core/ext/transport/cronet/transport/cronet_transport.c
index abb558982b..587a3b83b5 100644
--- a/src/core/ext/transport/cronet/transport/cronet_transport.c
+++ b/src/core/ext/transport/cronet/transport/cronet_transport.c
@@ -187,9 +187,34 @@ struct stream_obj {
 
   /* Mutex to protect storage */
   gpr_mu mu;
+
+  /* Refcount object of the stream */
+  grpc_stream_refcount *refcount;
 };
 typedef struct stream_obj stream_obj;
 
+#ifndef NDEBUG
+#define GRPC_CRONET_STREAM_REF(stream, reason) \
+  grpc_cronet_stream_ref((stream), (reason))
+#define GRPC_CRONET_STREAM_UNREF(exec_ctx, stream, reason) \
+  grpc_cronet_stream_unref((exec_ctx), (stream), (reason))
+void grpc_cronet_stream_ref(stream_obj *s, const char *reason) {
+  grpc_stream_ref(s->refcount, reason);
+}
+void grpc_cronet_stream_unref(grpc_exec_ctx *exec_ctx, stream_obj *s,
+                              const char *reason) {
+  grpc_stream_unref(exec_ctx, s->refcount, reason);
+}
+#else
+#define GRPC_CRONET_STREAM_REF(stream, reason) grpc_cronet_stream_ref((stream))
+#define GRPC_CRONET_STREAM_UNREF(exec_ctx, stream, reason) \
+  grpc_cronet_stream_unref((exec_ctx), (stream))
+void grpc_cronet_stream_ref(stream_obj *s) { grpc_stream_ref(s->refcount); }
+void grpc_cronet_stream_unref(grpc_exec_ctx *exec_ctx, stream_obj *s) {
+  grpc_stream_unref(exec_ctx, s->refcount);
+}
+#endif
+
 static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
                                           struct op_and_state *oas);
 
@@ -346,13 +371,12 @@ static void remove_from_storage(struct stream_obj *s,
   This can get executed from the Cronet network thread via cronet callback
   or on the application supplied thread via the perform_stream_op function.
 */
-static void execute_from_storage(stream_obj *s) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+static void execute_from_storage(grpc_exec_ctx *exec_ctx, stream_obj *s) {
   gpr_mu_lock(&s->mu);
   for (struct op_and_state *curr = s->storage.head; curr != NULL;) {
     CRONET_LOG(GPR_DEBUG, "calling op at %p. done = %d", curr, curr->done);
     GPR_ASSERT(curr->done == 0);
-    enum e_op_result result = execute_stream_op(&exec_ctx, curr);
+    enum e_op_result result = execute_stream_op(exec_ctx, curr);
     CRONET_LOG(GPR_DEBUG, "execute_stream_op[%p] returns %s", curr,
                op_result_string(result));
     /* if this op is done, then remove it and free memory */
@@ -369,7 +393,6 @@ static void execute_from_storage(stream_obj *s) {
     }
   }
   gpr_mu_unlock(&s->mu);
-  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -377,6 +400,8 @@ static void execute_from_storage(stream_obj *s) {
 */
 static void on_failed(bidirectional_stream *stream, int net_error) {
   CRONET_LOG(GPR_DEBUG, "on_failed(%p, %d)", stream, net_error);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
   bidirectional_stream_destroy(s->cbs);
@@ -392,7 +417,9 @@ static void on_failed(bidirectional_stream *stream, int net_error) {
   }
   null_and_maybe_free_read_buffer(s);
   gpr_mu_unlock(&s->mu);
-  execute_from_storage(s);
+  execute_from_storage(&exec_ctx, s);
+  GRPC_CRONET_STREAM_UNREF(&exec_ctx, s, "cronet transport");
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -400,6 +427,8 @@ static void on_failed(bidirectional_stream *stream, int net_error) {
 */
 static void on_canceled(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "on_canceled(%p)", stream);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
   bidirectional_stream_destroy(s->cbs);
@@ -415,7 +444,9 @@ static void on_canceled(bidirectional_stream *stream) {
   }
   null_and_maybe_free_read_buffer(s);
   gpr_mu_unlock(&s->mu);
-  execute_from_storage(s);
+  execute_from_storage(&exec_ctx, s);
+  GRPC_CRONET_STREAM_UNREF(&exec_ctx, s, "cronet transport");
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -423,6 +454,8 @@ static void on_canceled(bidirectional_stream *stream) {
 */
 static void on_succeeded(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "on_succeeded(%p)", stream);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   stream_obj *s = (stream_obj *)stream->annotation;
   gpr_mu_lock(&s->mu);
   bidirectional_stream_destroy(s->cbs);
@@ -430,7 +463,9 @@ static void on_succeeded(bidirectional_stream *stream) {
   s->cbs = NULL;
   null_and_maybe_free_read_buffer(s);
   gpr_mu_unlock(&s->mu);
-  execute_from_storage(s);
+  execute_from_storage(&exec_ctx, s);
+  GRPC_CRONET_STREAM_UNREF(&exec_ctx, s, "cronet transport");
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -438,6 +473,7 @@ static void on_succeeded(bidirectional_stream *stream) {
 */
 static void on_stream_ready(bidirectional_stream *stream) {
   CRONET_LOG(GPR_DEBUG, "W: on_stream_ready(%p)", stream);
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   stream_obj *s = (stream_obj *)stream->annotation;
   grpc_cronet_transport *t = (grpc_cronet_transport *)s->curr_ct;
   gpr_mu_lock(&s->mu);
@@ -457,7 +493,8 @@ static void on_stream_ready(bidirectional_stream *stream) {
     }
   }
   gpr_mu_unlock(&s->mu);
-  execute_from_storage(s);
+  execute_from_storage(&exec_ctx, s);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -513,14 +550,15 @@ static void on_response_headers_received(
     s->state.pending_read_from_cronet = true;
   }
   gpr_mu_unlock(&s->mu);
+  execute_from_storage(&exec_ctx, s);
   grpc_exec_ctx_finish(&exec_ctx);
-  execute_from_storage(s);
 }
 
 /*
   Cronet callback
 */
 static void on_write_completed(bidirectional_stream *stream, const char *data) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   stream_obj *s = (stream_obj *)stream->annotation;
   CRONET_LOG(GPR_DEBUG, "W: on_write_completed(%p, %s)", stream, data);
   gpr_mu_lock(&s->mu);
@@ -530,7 +568,8 @@ static void on_write_completed(bidirectional_stream *stream, const char *data) {
   }
   s->state.state_callback_received[OP_SEND_MESSAGE] = true;
   gpr_mu_unlock(&s->mu);
-  execute_from_storage(s);
+  execute_from_storage(&exec_ctx, s);
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -538,6 +577,7 @@ static void on_write_completed(bidirectional_stream *stream, const char *data) {
 */
 static void on_read_completed(bidirectional_stream *stream, char *data,
                               int count) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   stream_obj *s = (stream_obj *)stream->annotation;
   CRONET_LOG(GPR_DEBUG, "R: on_read_completed(%p, %p, %d)", stream, data,
              count);
@@ -563,14 +603,15 @@ static void on_read_completed(bidirectional_stream *stream, char *data,
       gpr_mu_unlock(&s->mu);
     } else {
       gpr_mu_unlock(&s->mu);
-      execute_from_storage(s);
+      execute_from_storage(&exec_ctx, s);
     }
   } else {
     null_and_maybe_free_read_buffer(s);
     s->state.rs.read_stream_closed = true;
     gpr_mu_unlock(&s->mu);
-    execute_from_storage(s);
+    execute_from_storage(&exec_ctx, s);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -625,12 +666,11 @@ static void on_response_trailers_received(
     s->state.state_op_done[OP_SEND_TRAILING_METADATA] = true;
 
     gpr_mu_unlock(&s->mu);
-    grpc_exec_ctx_finish(&exec_ctx);
   } else {
     gpr_mu_unlock(&s->mu);
-    grpc_exec_ctx_finish(&exec_ctx);
-    execute_from_storage(s);
+    execute_from_storage(&exec_ctx, s);
   }
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 /*
@@ -1313,6 +1353,9 @@ static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
                        grpc_stream *gs, grpc_stream_refcount *refcount,
                        const void *server_data, gpr_arena *arena) {
   stream_obj *s = (stream_obj *)gs;
+
+  s->refcount = refcount;
+  GRPC_CRONET_STREAM_REF(s, "cronet transport");
   memset(&s->storage, 0, sizeof(s->storage));
   s->storage.head = NULL;
   memset(&s->state, 0, sizeof(s->state));
@@ -1370,7 +1413,7 @@ static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   }
   stream_obj *s = (stream_obj *)gs;
   add_to_storage(s, op);
-  execute_from_storage(s);
+  execute_from_storage(exec_ctx, s);
 }
 
 static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
@@ -1386,10 +1429,6 @@ static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
 
 static void destroy_transport(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {}
 
-static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {
-  return NULL;
-}
-
 static grpc_endpoint *get_endpoint(grpc_exec_ctx *exec_ctx,
                                    grpc_transport *gt) {
   return NULL;
@@ -1408,7 +1447,6 @@ static const grpc_transport_vtable grpc_cronet_vtable = {
     perform_op,
     destroy_stream,
     destroy_transport,
-    get_peer,
     get_endpoint};
 
 grpc_transport *grpc_create_cronet_transport(void *engine, const char *target,
diff --git a/src/core/ext/transport/inproc/inproc_transport.c b/src/core/ext/transport/inproc/inproc_transport.c
index 6f4b429ee2..31739d07dd 100644
--- a/src/core/ext/transport/inproc/inproc_transport.c
+++ b/src/core/ext/transport/inproc/inproc_transport.c
@@ -37,7 +37,6 @@
     if (GRPC_TRACER_ON(grpc_inproc_trace)) gpr_log(__VA_ARGS__); \
   } while (0)
 
-static const grpc_transport_vtable inproc_vtable;
 static grpc_slice g_empty_slice;
 static grpc_slice g_fake_path_key;
 static grpc_slice g_fake_path_value;
@@ -120,7 +119,7 @@ static void slice_buffer_list_append_entry(slice_buffer_list *l,
 }
 
 static grpc_slice_buffer *slice_buffer_list_append(slice_buffer_list *l) {
-  sb_list_entry *next = gpr_malloc(sizeof(*next));
+  sb_list_entry *next = (sb_list_entry *)gpr_malloc(sizeof(*next));
   grpc_slice_buffer_init(&next->sb);
   slice_buffer_list_append_entry(l, next);
   return &next->sb;
@@ -327,7 +326,8 @@ static grpc_error *fill_in_metadata(grpc_exec_ctx *exec_ctx, inproc_stream *s,
   grpc_error *error = GRPC_ERROR_NONE;
   for (grpc_linked_mdelem *elem = metadata->list.head;
        (elem != NULL) && (error == GRPC_ERROR_NONE); elem = elem->next) {
-    grpc_linked_mdelem *nelem = gpr_arena_alloc(s->arena, sizeof(*nelem));
+    grpc_linked_mdelem *nelem =
+        (grpc_linked_mdelem *)gpr_arena_alloc(s->arena, sizeof(*nelem));
     nelem->md = grpc_mdelem_from_slices(
         exec_ctx, grpc_slice_intern(GRPC_MDKEY(elem->md)),
         grpc_slice_intern(GRPC_MDVALUE(elem->md)));
@@ -531,12 +531,14 @@ static void fail_helper_locked(grpc_exec_ctx *exec_ctx, inproc_stream *s,
       // since it expects that as well as no error yet
       grpc_metadata_batch fake_md;
       grpc_metadata_batch_init(&fake_md);
-      grpc_linked_mdelem *path_md = gpr_arena_alloc(s->arena, sizeof(*path_md));
+      grpc_linked_mdelem *path_md =
+          (grpc_linked_mdelem *)gpr_arena_alloc(s->arena, sizeof(*path_md));
       path_md->md =
           grpc_mdelem_from_slices(exec_ctx, g_fake_path_key, g_fake_path_value);
       GPR_ASSERT(grpc_metadata_batch_link_tail(exec_ctx, &fake_md, path_md) ==
                  GRPC_ERROR_NONE);
-      grpc_linked_mdelem *auth_md = gpr_arena_alloc(s->arena, sizeof(*auth_md));
+      grpc_linked_mdelem *auth_md =
+          (grpc_linked_mdelem *)gpr_arena_alloc(s->arena, sizeof(*auth_md));
       auth_md->md =
           grpc_mdelem_from_slices(exec_ctx, g_fake_auth_key, g_fake_auth_value);
       GPR_ASSERT(grpc_metadata_batch_link_tail(exec_ctx, &fake_md, auth_md) ==
@@ -1164,6 +1166,55 @@ static void destroy_transport(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {
 }
 
 /*******************************************************************************
+ * INTEGRATION GLUE
+ */
+
+static void set_pollset(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
+                        grpc_stream *gs, grpc_pollset *pollset) {
+  // Nothing to do here
+}
+
+static void set_pollset_set(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
+                            grpc_stream *gs, grpc_pollset_set *pollset_set) {
+  // Nothing to do here
+}
+
+static grpc_endpoint *get_endpoint(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
+  return NULL;
+}
+
+/*******************************************************************************
+ * GLOBAL INIT AND DESTROY
+ */
+static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
+
+void grpc_inproc_transport_init(void) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_CLOSURE_INIT(&do_nothing_closure, do_nothing, NULL,
+                    grpc_schedule_on_exec_ctx);
+  g_empty_slice = grpc_slice_from_static_buffer(NULL, 0);
+
+  grpc_slice key_tmp = grpc_slice_from_static_string(":path");
+  g_fake_path_key = grpc_slice_intern(key_tmp);
+  grpc_slice_unref_internal(&exec_ctx, key_tmp);
+
+  g_fake_path_value = grpc_slice_from_static_string("/");
+
+  grpc_slice auth_tmp = grpc_slice_from_static_string(":authority");
+  g_fake_auth_key = grpc_slice_intern(auth_tmp);
+  grpc_slice_unref_internal(&exec_ctx, auth_tmp);
+
+  g_fake_auth_value = grpc_slice_from_static_string("inproc-fail");
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+static const grpc_transport_vtable inproc_vtable = {
+    sizeof(inproc_stream), "inproc",        init_stream,
+    set_pollset,           set_pollset_set, perform_stream_op,
+    perform_transport_op,  destroy_stream,  destroy_transport,
+    get_endpoint};
+
+/*******************************************************************************
  * Main inproc transport functions
  */
 static void inproc_transports_create(grpc_exec_ctx *exec_ctx,
@@ -1172,10 +1223,10 @@ static void inproc_transports_create(grpc_exec_ctx *exec_ctx,
                                      grpc_transport **client_transport,
                                      const grpc_channel_args *client_args) {
   INPROC_LOG(GPR_DEBUG, "inproc_transports_create");
-  inproc_transport *st = gpr_zalloc(sizeof(*st));
-  inproc_transport *ct = gpr_zalloc(sizeof(*ct));
+  inproc_transport *st = (inproc_transport *)gpr_zalloc(sizeof(*st));
+  inproc_transport *ct = (inproc_transport *)gpr_zalloc(sizeof(*ct));
   // Share one lock between both sides since both sides get affected
-  st->mu = ct->mu = gpr_malloc(sizeof(*st->mu));
+  st->mu = ct->mu = (shared_mu *)gpr_malloc(sizeof(*st->mu));
   gpr_mu_init(&st->mu->mu);
   gpr_ref_init(&st->mu->refs, 2);
   st->base.vtable = &inproc_vtable;
@@ -1212,8 +1263,8 @@ grpc_channel *grpc_inproc_channel_create(grpc_server *server,
 
   grpc_arg default_authority_arg;
   default_authority_arg.type = GRPC_ARG_STRING;
-  default_authority_arg.key = GRPC_ARG_DEFAULT_AUTHORITY;
-  default_authority_arg.value.string = "inproc.authority";
+  default_authority_arg.key = (char *)GRPC_ARG_DEFAULT_AUTHORITY;
+  default_authority_arg.value.string = (char *)"inproc.authority";
   grpc_channel_args *client_args =
       grpc_channel_args_copy_and_add(args, &default_authority_arg, 1);
 
@@ -1237,61 +1288,6 @@ grpc_channel *grpc_inproc_channel_create(grpc_server *server,
   return channel;
 }
 
-/*******************************************************************************
- * INTEGRATION GLUE
- */
-
-static void set_pollset(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                        grpc_stream *gs, grpc_pollset *pollset) {
-  // Nothing to do here
-}
-
-static void set_pollset_set(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
-                            grpc_stream *gs, grpc_pollset_set *pollset_set) {
-  // Nothing to do here
-}
-
-static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
-  return gpr_strdup("inproc");
-}
-
-static grpc_endpoint *get_endpoint(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
-  return NULL;
-}
-
-static const grpc_transport_vtable inproc_vtable = {
-    sizeof(inproc_stream), "inproc",
-    init_stream,           set_pollset,
-    set_pollset_set,       perform_stream_op,
-    perform_transport_op,  destroy_stream,
-    destroy_transport,     get_peer,
-    get_endpoint};
-
-/*******************************************************************************
- * GLOBAL INIT AND DESTROY
- */
-static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
-
-void grpc_inproc_transport_init(void) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  GRPC_CLOSURE_INIT(&do_nothing_closure, do_nothing, NULL,
-                    grpc_schedule_on_exec_ctx);
-  g_empty_slice = grpc_slice_from_static_buffer(NULL, 0);
-
-  grpc_slice key_tmp = grpc_slice_from_static_string(":path");
-  g_fake_path_key = grpc_slice_intern(key_tmp);
-  grpc_slice_unref_internal(&exec_ctx, key_tmp);
-
-  g_fake_path_value = grpc_slice_from_static_string("/");
-
-  grpc_slice auth_tmp = grpc_slice_from_static_string(":authority");
-  g_fake_auth_key = grpc_slice_intern(auth_tmp);
-  grpc_slice_unref_internal(&exec_ctx, auth_tmp);
-
-  g_fake_auth_value = grpc_slice_from_static_string("inproc-fail");
-  grpc_exec_ctx_finish(&exec_ctx);
-}
-
 void grpc_inproc_transport_shutdown(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_slice_unref_internal(&exec_ctx, g_empty_slice);
diff --git a/src/core/lib/channel/channel_args.c b/src/core/lib/channel/channel_args.c
index 8fdef0bc64..30248b3c60 100644
--- a/src/core/lib/channel/channel_args.c
+++ b/src/core/lib/channel/channel_args.c
@@ -86,13 +86,14 @@ grpc_channel_args *grpc_channel_args_copy_and_add_and_remove(
     }
   }
   // Create result.
-  grpc_channel_args *dst = gpr_malloc(sizeof(grpc_channel_args));
+  grpc_channel_args *dst =
+      (grpc_channel_args *)gpr_malloc(sizeof(grpc_channel_args));
   dst->num_args = num_args_to_copy + num_to_add;
   if (dst->num_args == 0) {
     dst->args = NULL;
     return dst;
   }
-  dst->args = gpr_malloc(sizeof(grpc_arg) * dst->num_args);
+  dst->args = (grpc_arg *)gpr_malloc(sizeof(grpc_arg) * dst->num_args);
   // Copy args from src that are not being removed.
   size_t dst_idx = 0;
   if (src != NULL) {
@@ -117,7 +118,7 @@ grpc_channel_args *grpc_channel_args_copy(const grpc_channel_args *src) {
 grpc_channel_args *grpc_channel_args_union(const grpc_channel_args *a,
                                            const grpc_channel_args *b) {
   const size_t max_out = (a->num_args + b->num_args);
-  grpc_arg *uniques = gpr_malloc(sizeof(*uniques) * max_out);
+  grpc_arg *uniques = (grpc_arg *)gpr_malloc(sizeof(*uniques) * max_out);
   for (size_t i = 0; i < a->num_args; ++i) uniques[i] = a->args[i];
 
   size_t uniques_idx = a->num_args;
@@ -160,24 +161,25 @@ static int cmp_arg(const grpc_arg *a, const grpc_arg *b) {
 /* stabilizing comparison function: since channel_args ordering matters for
  * keys with the same name, we need to preserve that ordering */
 static int cmp_key_stable(const void *ap, const void *bp) {
-  const grpc_arg *const *a = ap;
-  const grpc_arg *const *b = bp;
+  const grpc_arg *const *a = (const grpc_arg *const *)ap;
+  const grpc_arg *const *b = (const grpc_arg *const *)bp;
   int c = strcmp((*a)->key, (*b)->key);
   if (c == 0) c = GPR_ICMP(*a, *b);
   return c;
 }
 
 grpc_channel_args *grpc_channel_args_normalize(const grpc_channel_args *a) {
-  grpc_arg **args = gpr_malloc(sizeof(grpc_arg *) * a->num_args);
+  grpc_arg **args = (grpc_arg **)gpr_malloc(sizeof(grpc_arg *) * a->num_args);
   for (size_t i = 0; i < a->num_args; i++) {
     args[i] = &a->args[i];
   }
   if (a->num_args > 1)
     qsort(args, a->num_args, sizeof(grpc_arg *), cmp_key_stable);
 
-  grpc_channel_args *b = gpr_malloc(sizeof(grpc_channel_args));
+  grpc_channel_args *b =
+      (grpc_channel_args *)gpr_malloc(sizeof(grpc_channel_args));
   b->num_args = a->num_args;
-  b->args = gpr_malloc(sizeof(grpc_arg) * b->num_args);
+  b->args = (grpc_arg *)gpr_malloc(sizeof(grpc_arg) * b->num_args);
   for (size_t i = 0; i < a->num_args; i++) {
     b->args[i] = copy_arg(args[i]);
   }
@@ -210,7 +212,7 @@ void grpc_channel_args_destroy(grpc_exec_ctx *exec_ctx, grpc_channel_args *a) {
 grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(
     const grpc_channel_args *a) {
   size_t i;
-  if (a == NULL) return 0;
+  if (a == NULL) return GRPC_COMPRESS_NONE;
   for (i = 0; i < a->num_args; ++i) {
     if (a->args[i].type == GRPC_ARG_INTEGER &&
         !strcmp(GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM, a->args[i].key)) {
@@ -221,12 +223,37 @@ grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(
   return GRPC_COMPRESS_NONE;
 }
 
+grpc_stream_compression_algorithm
+grpc_channel_args_get_stream_compression_algorithm(const grpc_channel_args *a) {
+  size_t i;
+  if (a == NULL) return GRPC_STREAM_COMPRESS_NONE;
+  for (i = 0; i < a->num_args; ++i) {
+    if (a->args[i].type == GRPC_ARG_INTEGER &&
+        !strcmp(GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM,
+                a->args[i].key)) {
+      return (grpc_stream_compression_algorithm)a->args[i].value.integer;
+      break;
+    }
+  }
+  return GRPC_STREAM_COMPRESS_NONE;
+}
+
 grpc_channel_args *grpc_channel_args_set_compression_algorithm(
     grpc_channel_args *a, grpc_compression_algorithm algorithm) {
   GPR_ASSERT(algorithm < GRPC_COMPRESS_ALGORITHMS_COUNT);
   grpc_arg tmp;
   tmp.type = GRPC_ARG_INTEGER;
-  tmp.key = GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM;
+  tmp.key = (char *)GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM;
+  tmp.value.integer = algorithm;
+  return grpc_channel_args_copy_and_add(a, &tmp, 1);
+}
+
+grpc_channel_args *grpc_channel_args_set_stream_compression_algorithm(
+    grpc_channel_args *a, grpc_stream_compression_algorithm algorithm) {
+  GPR_ASSERT(algorithm < GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT);
+  grpc_arg tmp;
+  tmp.type = GRPC_ARG_INTEGER;
+  tmp.key = (char *)GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM;
   tmp.value.integer = algorithm;
   return grpc_channel_args_copy_and_add(a, &tmp, 1);
 }
@@ -251,6 +278,26 @@ static int find_compression_algorithm_states_bitset(const grpc_channel_args *a,
   return 0; /* GPR_FALSE */
 }
 
+/** Returns 1 if the argument for compression algorithm's enabled states bitset
+ * was found in \a a, returning the arg's value in \a states. Otherwise, returns
+ * 0. */
+static int find_stream_compression_algorithm_states_bitset(
+    const grpc_channel_args *a, int **states_arg) {
+  if (a != NULL) {
+    size_t i;
+    for (i = 0; i < a->num_args; ++i) {
+      if (a->args[i].type == GRPC_ARG_INTEGER &&
+          !strcmp(GRPC_STREAM_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET,
+                  a->args[i].key)) {
+        *states_arg = &a->args[i].value.integer;
+        **states_arg |= 0x1; /* forcefully enable support for no compression */
+        return 1;
+      }
+    }
+  }
+  return 0; /* GPR_FALSE */
+}
+
 grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
     grpc_compression_algorithm algorithm, int state) {
@@ -261,7 +308,7 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
 
   if (grpc_channel_args_get_compression_algorithm(*a) == algorithm &&
       state == 0) {
-    char *algo_name = NULL;
+    const char *algo_name = NULL;
     GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algo_name) != 0);
     gpr_log(GPR_ERROR,
             "Tried to disable default compression algorithm '%s'. The "
@@ -277,7 +324,7 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
     /* create a new arg */
     grpc_arg tmp;
     tmp.type = GRPC_ARG_INTEGER;
-    tmp.key = GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET;
+    tmp.key = (char *)GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET;
     /* all enabled by default */
     tmp.value.integer = (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1;
     if (state != 0) {
@@ -292,6 +339,48 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
   return result;
 }
 
+grpc_channel_args *grpc_channel_args_stream_compression_algorithm_set_state(
+    grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
+    grpc_stream_compression_algorithm algorithm, int state) {
+  int *states_arg = NULL;
+  grpc_channel_args *result = *a;
+  const int states_arg_found =
+      find_stream_compression_algorithm_states_bitset(*a, &states_arg);
+
+  if (grpc_channel_args_get_stream_compression_algorithm(*a) == algorithm &&
+      state == 0) {
+    const char *algo_name = NULL;
+    GPR_ASSERT(grpc_stream_compression_algorithm_name(algorithm, &algo_name) !=
+               0);
+    gpr_log(GPR_ERROR,
+            "Tried to disable default stream compression algorithm '%s'. The "
+            "operation has been ignored.",
+            algo_name);
+  } else if (states_arg_found) {
+    if (state != 0) {
+      GPR_BITSET((unsigned *)states_arg, algorithm);
+    } else if (algorithm != GRPC_STREAM_COMPRESS_NONE) {
+      GPR_BITCLEAR((unsigned *)states_arg, algorithm);
+    }
+  } else {
+    /* create a new arg */
+    grpc_arg tmp;
+    tmp.type = GRPC_ARG_INTEGER;
+    tmp.key = (char *)GRPC_STREAM_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET;
+    /* all enabled by default */
+    tmp.value.integer = (1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) - 1;
+    if (state != 0) {
+      GPR_BITSET((unsigned *)&tmp.value.integer, algorithm);
+    } else if (algorithm != GRPC_STREAM_COMPRESS_NONE) {
+      GPR_BITCLEAR((unsigned *)&tmp.value.integer, algorithm);
+    }
+    result = grpc_channel_args_copy_and_add(*a, &tmp, 1);
+    grpc_channel_args_destroy(exec_ctx, *a);
+    *a = result;
+  }
+  return result;
+}
+
 uint32_t grpc_channel_args_compression_algorithm_get_states(
     const grpc_channel_args *a) {
   int *states_arg;
@@ -302,6 +391,17 @@ uint32_t grpc_channel_args_compression_algorithm_get_states(
   }
 }
 
+uint32_t grpc_channel_args_stream_compression_algorithm_get_states(
+    const grpc_channel_args *a) {
+  int *states_arg;
+  if (find_stream_compression_algorithm_states_bitset(a, &states_arg)) {
+    return (uint32_t)*states_arg;
+  } else {
+    return (1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) -
+           1; /* All algs. enabled */
+  }
+}
+
 grpc_channel_args *grpc_channel_args_set_socket_mutator(
     grpc_channel_args *a, grpc_socket_mutator *mutator) {
   grpc_arg tmp = grpc_socket_mutator_to_arg(mutator);
diff --git a/src/core/lib/channel/channel_args.h b/src/core/lib/channel/channel_args.h
index f649a8d9ec..0599e189c3 100644
--- a/src/core/lib/channel/channel_args.h
+++ b/src/core/lib/channel/channel_args.h
@@ -59,12 +59,24 @@ void grpc_channel_args_destroy(grpc_exec_ctx *exec_ctx, grpc_channel_args *a);
 grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(
     const grpc_channel_args *a);
 
+/** Returns the stream compression algorithm set in \a a. */
+grpc_stream_compression_algorithm
+grpc_channel_args_get_stream_compression_algorithm(const grpc_channel_args *a);
+
 /** Returns a channel arg instance with compression enabled. If \a a is
  * non-NULL, its args are copied. N.B. GRPC_COMPRESS_NONE disables compression
  * for the channel. */
 grpc_channel_args *grpc_channel_args_set_compression_algorithm(
     grpc_channel_args *a, grpc_compression_algorithm algorithm);
 
+/** Returns a channel arg instance with stream compression enabled. If \a a is
+ * non-NULL, its args are copied. N.B. GRPC_STREAM_COMPRESS_NONE disables
+ * stream compression for the channel. If a value other than
+ * GRPC_STREAM_COMPRESS_NONE is set, it takes precedence over message-wise
+ * compression algorithms. */
+grpc_channel_args *grpc_channel_args_set_stream_compression_algorithm(
+    grpc_channel_args *a, grpc_stream_compression_algorithm algorithm);
+
 /** Sets the support for the given compression algorithm. By default, all
  * compression algorithms are enabled. It's an error to disable an algorithm set
  * by grpc_channel_args_set_compression_algorithm.
@@ -76,6 +88,17 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
     grpc_compression_algorithm algorithm, int enabled);
 
+/** Sets the support for the given stream compression algorithm. By default, all
+ * stream compression algorithms are enabled. It's an error to disable an
+ * algorithm set by grpc_channel_args_set_stream_compression_algorithm.
+ *
+ * Returns an instance with the updated algorithm states. The \a a pointer is
+ * modified to point to the returned instance (which may be different from the
+ * input value of \a a). */
+grpc_channel_args *grpc_channel_args_stream_compression_algorithm_set_state(
+    grpc_exec_ctx *exec_ctx, grpc_channel_args **a,
+    grpc_stream_compression_algorithm algorithm, int enabled);
+
 /** Returns the bitset representing the support state (true for enabled, false
  * for disabled) for compression algorithms.
  *
@@ -84,6 +107,14 @@ grpc_channel_args *grpc_channel_args_compression_algorithm_set_state(
 uint32_t grpc_channel_args_compression_algorithm_get_states(
     const grpc_channel_args *a);
 
+/** Returns the bitset representing the support state (true for enabled, false
+ * for disabled) for stream compression algorithms.
+ *
+ * The i-th bit of the returned bitset corresponds to the i-th entry in the
+ * grpc_stream_compression_algorithm enum. */
+uint32_t grpc_channel_args_stream_compression_algorithm_get_states(
+    const grpc_channel_args *a);
+
 int grpc_channel_args_compare(const grpc_channel_args *a,
                               const grpc_channel_args *b);
 
diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 0f8e33c4be..775c8bc667 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -233,15 +233,10 @@ void grpc_call_stack_destroy(grpc_exec_ctx *exec_ctx, grpc_call_stack *stack,
 void grpc_call_next_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                        grpc_transport_stream_op_batch *op) {
   grpc_call_element *next_elem = elem + 1;
+  GRPC_CALL_LOG_OP(GPR_INFO, next_elem, op);
   next_elem->filter->start_transport_stream_op_batch(exec_ctx, next_elem, op);
 }
 
-char *grpc_call_next_get_peer(grpc_exec_ctx *exec_ctx,
-                              grpc_call_element *elem) {
-  grpc_call_element *next_elem = elem + 1;
-  return next_elem->filter->get_peer(exec_ctx, next_elem);
-}
-
 void grpc_channel_next_get_info(grpc_exec_ctx *exec_ctx,
                                 grpc_channel_element *elem,
                                 const grpc_channel_info *channel_info) {
@@ -265,12 +260,3 @@ grpc_call_stack *grpc_call_stack_from_top_element(grpc_call_element *elem) {
   return (grpc_call_stack *)((char *)(elem)-ROUND_UP_TO_ALIGNMENT_SIZE(
       sizeof(grpc_call_stack)));
 }
-
-void grpc_call_element_signal_error(grpc_exec_ctx *exec_ctx,
-                                    grpc_call_element *elem,
-                                    grpc_error *error) {
-  grpc_transport_stream_op_batch *op = grpc_make_transport_stream_op(NULL);
-  op->cancel_stream = true;
-  op->payload->cancel_stream.cancel_error = error;
-  elem->filter->start_transport_stream_op_batch(exec_ctx, elem, op);
-}
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index a80f8aa826..f0de80f0c0 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -40,6 +40,7 @@
 #include <grpc/support/time.h>
 
 #include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/support/arena.h"
 #include "src/core/lib/transport/transport.h"
@@ -71,6 +72,7 @@ typedef struct {
   gpr_timespec start_time;
   gpr_timespec deadline;
   gpr_arena *arena;
+  grpc_call_combiner *call_combiner;
 } grpc_call_element_args;
 
 typedef struct {
@@ -150,9 +152,6 @@ typedef struct {
   void (*destroy_channel_elem)(grpc_exec_ctx *exec_ctx,
                                grpc_channel_element *elem);
 
-  /* Implement grpc_call_get_peer() */
-  char *(*get_peer)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
-
   /* Implement grpc_channel_get_info() */
   void (*get_channel_info)(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                            const grpc_channel_info *channel_info);
@@ -271,8 +270,6 @@ void grpc_call_next_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
    stack */
 void grpc_channel_next_op(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                           grpc_transport_op *op);
-/* Pass through a request to get_peer to the next child element */
-char *grpc_call_next_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
 /* Pass through a request to get_channel_info() to the next child element */
 void grpc_channel_next_get_info(grpc_exec_ctx *exec_ctx,
                                 grpc_channel_element *elem,
@@ -284,14 +281,10 @@ grpc_channel_stack *grpc_channel_stack_from_top_element(
 /* Given the top element of a call stack, get the call stack itself */
 grpc_call_stack *grpc_call_stack_from_top_element(grpc_call_element *elem);
 
-void grpc_call_log_op(char *file, int line, gpr_log_severity severity,
+void grpc_call_log_op(const char *file, int line, gpr_log_severity severity,
                       grpc_call_element *elem,
                       grpc_transport_stream_op_batch *op);
 
-void grpc_call_element_signal_error(grpc_exec_ctx *exec_ctx,
-                                    grpc_call_element *cur_elem,
-                                    grpc_error *error);
-
 extern grpc_tracer_flag grpc_trace_channel;
 
 #define GRPC_CALL_LOG_OP(sev, elem, op) \
diff --git a/src/core/lib/channel/channel_stack_builder.c b/src/core/lib/channel/channel_stack_builder.c
index c369e33073..b663ebfb52 100644
--- a/src/core/lib/channel/channel_stack_builder.c
+++ b/src/core/lib/channel/channel_stack_builder.c
@@ -51,7 +51,8 @@ struct grpc_channel_stack_builder_iterator {
 };
 
 grpc_channel_stack_builder *grpc_channel_stack_builder_create(void) {
-  grpc_channel_stack_builder *b = gpr_zalloc(sizeof(*b));
+  grpc_channel_stack_builder *b =
+      (grpc_channel_stack_builder *)gpr_zalloc(sizeof(*b));
 
   b->begin.filter = NULL;
   b->end.filter = NULL;
@@ -76,7 +77,8 @@ const char *grpc_channel_stack_builder_get_target(
 
 static grpc_channel_stack_builder_iterator *create_iterator_at_filter_node(
     grpc_channel_stack_builder *builder, filter_node *node) {
-  grpc_channel_stack_builder_iterator *it = gpr_malloc(sizeof(*it));
+  grpc_channel_stack_builder_iterator *it =
+      (grpc_channel_stack_builder_iterator *)gpr_malloc(sizeof(*it));
   it->builder = builder;
   it->node = node;
   return it;
@@ -124,6 +126,20 @@ bool grpc_channel_stack_builder_move_prev(
   return true;
 }
 
+grpc_channel_stack_builder_iterator *grpc_channel_stack_builder_iterator_find(
+    grpc_channel_stack_builder *builder, const char *filter_name) {
+  GPR_ASSERT(filter_name != NULL);
+  grpc_channel_stack_builder_iterator *it =
+      grpc_channel_stack_builder_create_iterator_at_first(builder);
+  while (grpc_channel_stack_builder_move_next(it)) {
+    if (grpc_channel_stack_builder_iterator_is_end(it)) break;
+    const char *filter_name_at_it =
+        grpc_channel_stack_builder_iterator_filter_name(it);
+    if (strcmp(filter_name, filter_name_at_it) == 0) break;
+  }
+  return it;
+}
+
 bool grpc_channel_stack_builder_move_prev(
     grpc_channel_stack_builder_iterator *iterator);
 
@@ -169,6 +185,21 @@ bool grpc_channel_stack_builder_append_filter(
   return ok;
 }
 
+bool grpc_channel_stack_builder_remove_filter(
+    grpc_channel_stack_builder *builder, const char *filter_name) {
+  grpc_channel_stack_builder_iterator *it =
+      grpc_channel_stack_builder_iterator_find(builder, filter_name);
+  if (grpc_channel_stack_builder_iterator_is_end(it)) {
+    grpc_channel_stack_builder_iterator_destroy(it);
+    return false;
+  }
+  it->node->prev->next = it->node->next;
+  it->node->next->prev = it->node->prev;
+  gpr_free(it->node);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  return true;
+}
+
 bool grpc_channel_stack_builder_prepend_filter(
     grpc_channel_stack_builder *builder, const grpc_channel_filter *filter,
     grpc_post_filter_create_init_func post_init_func, void *user_data) {
@@ -183,13 +214,13 @@ bool grpc_channel_stack_builder_prepend_filter(
 static void add_after(filter_node *before, const grpc_channel_filter *filter,
                       grpc_post_filter_create_init_func post_init_func,
                       void *user_data) {
-  filter_node *new = gpr_malloc(sizeof(*new));
-  new->next = before->next;
-  new->prev = before;
-  new->next->prev = new->prev->next = new;
-  new->filter = filter;
-  new->init = post_init_func;
-  new->init_arg = user_data;
+  filter_node *new_node = (filter_node *)gpr_malloc(sizeof(*new_node));
+  new_node->next = before->next;
+  new_node->prev = before;
+  new_node->next->prev = new_node->prev->next = new_node;
+  new_node->filter = filter;
+  new_node->init = post_init_func;
+  new_node->init_arg = user_data;
 }
 
 bool grpc_channel_stack_builder_add_filter_before(
@@ -237,7 +268,7 @@ grpc_error *grpc_channel_stack_builder_finish(
 
   // create an array of filters
   const grpc_channel_filter **filters =
-      gpr_malloc(sizeof(*filters) * num_filters);
+      (const grpc_channel_filter **)gpr_malloc(sizeof(*filters) * num_filters);
   size_t i = 0;
   for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
     filters[i++] = p->filter;
diff --git a/src/core/lib/channel/channel_stack_builder.h b/src/core/lib/channel/channel_stack_builder.h
index d43e427962..fdff2a2b6d 100644
--- a/src/core/lib/channel/channel_stack_builder.h
+++ b/src/core/lib/channel/channel_stack_builder.h
@@ -95,6 +95,11 @@ bool grpc_channel_stack_builder_move_next(
 bool grpc_channel_stack_builder_move_prev(
     grpc_channel_stack_builder_iterator *iterator);
 
+/// Return an iterator at \a filter_name, or at the end of the list if not
+/// found.
+grpc_channel_stack_builder_iterator *grpc_channel_stack_builder_iterator_find(
+    grpc_channel_stack_builder *builder, const char *filter_name);
+
 typedef void (*grpc_post_filter_create_init_func)(
     grpc_channel_stack *channel_stack, grpc_channel_element *elem, void *arg);
 
@@ -132,6 +137,11 @@ bool grpc_channel_stack_builder_append_filter(
     grpc_post_filter_create_init_func post_init_func,
     void *user_data) GRPC_MUST_USE_RESULT;
 
+/// Remove any filter whose name is \a filter_name from \a builder. Returns true
+/// if \a filter_name was not found.
+bool grpc_channel_stack_builder_remove_filter(
+    grpc_channel_stack_builder *builder, const char *filter_name);
+
 /// Terminate iteration and destroy \a iterator
 void grpc_channel_stack_builder_iterator_destroy(
     grpc_channel_stack_builder_iterator *iterator);
diff --git a/src/core/lib/channel/connected_channel.c b/src/core/lib/channel/connected_channel.c
index af06ca802e..4f37908958 100644
--- a/src/core/lib/channel/connected_channel.c
+++ b/src/core/lib/channel/connected_channel.c
@@ -36,7 +36,57 @@ typedef struct connected_channel_channel_data {
   grpc_transport *transport;
 } channel_data;
 
-typedef struct connected_channel_call_data { void *unused; } call_data;
+typedef struct {
+  grpc_closure closure;
+  grpc_closure *original_closure;
+  grpc_call_combiner *call_combiner;
+  const char *reason;
+} callback_state;
+
+typedef struct connected_channel_call_data {
+  grpc_call_combiner *call_combiner;
+  // Closures used for returning results on the call combiner.
+  callback_state on_complete[6];  // Max number of pending batches.
+  callback_state recv_initial_metadata_ready;
+  callback_state recv_message_ready;
+} call_data;
+
+static void run_in_call_combiner(grpc_exec_ctx *exec_ctx, void *arg,
+                                 grpc_error *error) {
+  callback_state *state = (callback_state *)arg;
+  GRPC_CALL_COMBINER_START(exec_ctx, state->call_combiner,
+                           state->original_closure, GRPC_ERROR_REF(error),
+                           state->reason);
+}
+
+static void run_cancel_in_call_combiner(grpc_exec_ctx *exec_ctx, void *arg,
+                                        grpc_error *error) {
+  run_in_call_combiner(exec_ctx, arg, error);
+  gpr_free(arg);
+}
+
+static void intercept_callback(call_data *calld, callback_state *state,
+                               bool free_when_done, const char *reason,
+                               grpc_closure **original_closure) {
+  state->original_closure = *original_closure;
+  state->call_combiner = calld->call_combiner;
+  state->reason = reason;
+  *original_closure = GRPC_CLOSURE_INIT(
+      &state->closure,
+      free_when_done ? run_cancel_in_call_combiner : run_in_call_combiner,
+      state, grpc_schedule_on_exec_ctx);
+}
+
+static callback_state *get_state_for_batch(
+    call_data *calld, grpc_transport_stream_op_batch *batch) {
+  if (batch->send_initial_metadata) return &calld->on_complete[0];
+  if (batch->send_message) return &calld->on_complete[1];
+  if (batch->send_trailing_metadata) return &calld->on_complete[2];
+  if (batch->recv_initial_metadata) return &calld->on_complete[3];
+  if (batch->recv_message) return &calld->on_complete[4];
+  if (batch->recv_trailing_metadata) return &calld->on_complete[5];
+  GPR_UNREACHABLE_CODE(return NULL);
+}
 
 /* We perform a small hack to locate transport data alongside the connected
    channel data in call allocations, to allow everything to be pulled in minimal
@@ -49,19 +99,44 @@ typedef struct connected_channel_call_data { void *unused; } call_data;
    into transport stream operations */
 static void con_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-    grpc_transport_stream_op_batch *op) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
-
+    grpc_transport_stream_op_batch *batch) {
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  if (batch->recv_initial_metadata) {
+    callback_state *state = &calld->recv_initial_metadata_ready;
+    intercept_callback(
+        calld, state, false, "recv_initial_metadata_ready",
+        &batch->payload->recv_initial_metadata.recv_initial_metadata_ready);
+  }
+  if (batch->recv_message) {
+    callback_state *state = &calld->recv_message_ready;
+    intercept_callback(calld, state, false, "recv_message_ready",
+                       &batch->payload->recv_message.recv_message_ready);
+  }
+  if (batch->cancel_stream) {
+    // There can be more than one cancellation batch in flight at any
+    // given time, so we can't just pick out a fixed index into
+    // calld->on_complete like we can for the other ops.  However,
+    // cancellation isn't in the fast path, so we just allocate a new
+    // closure for each one.
+    callback_state *state = (callback_state *)gpr_malloc(sizeof(*state));
+    intercept_callback(calld, state, true, "on_complete (cancel_stream)",
+                       &batch->on_complete);
+  } else {
+    callback_state *state = get_state_for_batch(calld, batch);
+    intercept_callback(calld, state, false, "on_complete", &batch->on_complete);
+  }
   grpc_transport_perform_stream_op(exec_ctx, chand->transport,
-                                   TRANSPORT_STREAM_FROM_CALL_DATA(calld), op);
+                                   TRANSPORT_STREAM_FROM_CALL_DATA(calld),
+                                   batch);
+  GRPC_CALL_COMBINER_STOP(exec_ctx, calld->call_combiner,
+                          "passed batch to transport");
 }
 
 static void con_start_transport_op(grpc_exec_ctx *exec_ctx,
                                    grpc_channel_element *elem,
                                    grpc_transport_op *op) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   grpc_transport_perform_op(exec_ctx, chand->transport, op);
 }
 
@@ -69,8 +144,9 @@ static void con_start_transport_op(grpc_exec_ctx *exec_ctx,
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  calld->call_combiner = args->call_combiner;
   int r = grpc_transport_init_stream(
       exec_ctx, chand->transport, TRANSPORT_STREAM_FROM_CALL_DATA(calld),
       &args->call_stack->refcount, args->server_transport_data, args->arena);
@@ -82,8 +158,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
                                        grpc_call_element *elem,
                                        grpc_polling_entity *pollent) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   grpc_transport_set_pops(exec_ctx, chand->transport,
                           TRANSPORT_STREAM_FROM_CALL_DATA(calld), pollent);
 }
@@ -92,8 +168,8 @@ static void set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *then_schedule_closure) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   grpc_transport_destroy_stream(exec_ctx, chand->transport,
                                 TRANSPORT_STREAM_FROM_CALL_DATA(calld),
                                 then_schedule_closure);
@@ -118,11 +194,6 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   }
 }
 
-static char *con_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  channel_data *chand = elem->channel_data;
-  return grpc_transport_get_peer(exec_ctx, chand->transport);
-}
-
 /* No-op. */
 static void con_get_channel_info(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem,
@@ -138,7 +209,6 @@ const grpc_channel_filter grpc_connected_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    con_get_peer,
     con_get_channel_info,
     "connected",
 };
@@ -148,7 +218,7 @@ static void bind_transport(grpc_channel_stack *channel_stack,
   channel_data *cd = (channel_data *)elem->channel_data;
   GPR_ASSERT(elem->filter == &grpc_connected_filter);
   GPR_ASSERT(cd->transport == NULL);
-  cd->transport = t;
+  cd->transport = (grpc_transport *)t;
 
   /* HACK(ctiller): increase call stack size for the channel to make space
      for channel data. We need a cleaner (but performant) way to do this,
@@ -156,7 +226,8 @@ static void bind_transport(grpc_channel_stack *channel_stack,
      This is only "safe" because call stacks place no additional data after
      the last call element, and the last call element MUST be the connected
      channel. */
-  channel_stack->call_stack_size += grpc_transport_stream_size(t);
+  channel_stack->call_stack_size +=
+      grpc_transport_stream_size((grpc_transport *)t);
 }
 
 bool grpc_add_connected_filter(grpc_exec_ctx *exec_ctx,
@@ -170,6 +241,6 @@ bool grpc_add_connected_filter(grpc_exec_ctx *exec_ctx,
 }
 
 grpc_stream *grpc_connected_channel_get_stream(grpc_call_element *elem) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   return TRANSPORT_STREAM_FROM_CALL_DATA(calld);
 }
diff --git a/src/core/lib/channel/handshaker.c b/src/core/lib/channel/handshaker.c
index 2cb83f4114..1753da5721 100644
--- a/src/core/lib/channel/handshaker.c
+++ b/src/core/lib/channel/handshaker.c
@@ -84,7 +84,8 @@ struct grpc_handshake_manager {
 };
 
 grpc_handshake_manager* grpc_handshake_manager_create() {
-  grpc_handshake_manager* mgr = gpr_zalloc(sizeof(grpc_handshake_manager));
+  grpc_handshake_manager* mgr =
+      (grpc_handshake_manager*)gpr_zalloc(sizeof(grpc_handshake_manager));
   gpr_mu_init(&mgr->mu);
   gpr_ref_init(&mgr->refs, 1);
   return mgr;
@@ -137,8 +138,8 @@ void grpc_handshake_manager_add(grpc_handshake_manager* mgr,
     realloc_count = mgr->count * 2;
   }
   if (realloc_count > 0) {
-    mgr->handshakers =
-        gpr_realloc(mgr->handshakers, realloc_count * sizeof(grpc_handshaker*));
+    mgr->handshakers = (grpc_handshaker**)gpr_realloc(
+        mgr->handshakers, realloc_count * sizeof(grpc_handshaker*));
   }
   mgr->handshakers[mgr->count++] = handshaker;
   gpr_mu_unlock(&mgr->mu);
@@ -205,7 +206,7 @@ static bool call_next_handshaker_locked(grpc_exec_ctx* exec_ctx,
 // handshakers together.
 static void call_next_handshaker(grpc_exec_ctx* exec_ctx, void* arg,
                                  grpc_error* error) {
-  grpc_handshake_manager* mgr = arg;
+  grpc_handshake_manager* mgr = (grpc_handshake_manager*)arg;
   gpr_mu_lock(&mgr->mu);
   bool done = call_next_handshaker_locked(exec_ctx, mgr, GRPC_ERROR_REF(error));
   gpr_mu_unlock(&mgr->mu);
@@ -219,7 +220,7 @@ static void call_next_handshaker(grpc_exec_ctx* exec_ctx, void* arg,
 
 // Callback invoked when deadline is exceeded.
 static void on_timeout(grpc_exec_ctx* exec_ctx, void* arg, grpc_error* error) {
-  grpc_handshake_manager* mgr = arg;
+  grpc_handshake_manager* mgr = (grpc_handshake_manager*)arg;
   if (error == GRPC_ERROR_NONE) {  // Timer fired, rather than being cancelled.
     grpc_handshake_manager_shutdown(
         exec_ctx, mgr,
@@ -241,7 +242,8 @@ void grpc_handshake_manager_do_handshake(
   mgr->args.endpoint = endpoint;
   mgr->args.args = grpc_channel_args_copy(channel_args);
   mgr->args.user_data = user_data;
-  mgr->args.read_buffer = gpr_malloc(sizeof(*mgr->args.read_buffer));
+  mgr->args.read_buffer =
+      (grpc_slice_buffer*)gpr_malloc(sizeof(*mgr->args.read_buffer));
   grpc_slice_buffer_init(mgr->args.read_buffer);
   // Initialize state needed for calling handshakers.
   mgr->acceptor = acceptor;
diff --git a/src/core/lib/channel/handshaker_registry.c b/src/core/lib/channel/handshaker_registry.c
index 8c4bc3aa00..c6bc87d704 100644
--- a/src/core/lib/channel/handshaker_registry.c
+++ b/src/core/lib/channel/handshaker_registry.c
@@ -34,7 +34,7 @@ typedef struct {
 static void grpc_handshaker_factory_list_register(
     grpc_handshaker_factory_list* list, bool at_start,
     grpc_handshaker_factory* factory) {
-  list->list = gpr_realloc(
+  list->list = (grpc_handshaker_factory**)gpr_realloc(
       list->list, (list->num_factories + 1) * sizeof(grpc_handshaker_factory*));
   if (at_start) {
     memmove(list->list + 1, list->list,
diff --git a/src/core/lib/compression/algorithm_metadata.h b/src/core/lib/compression/algorithm_metadata.h
index 4717af6e2b..08feafc1bb 100644
--- a/src/core/lib/compression/algorithm_metadata.h
+++ b/src/core/lib/compression/algorithm_metadata.h
@@ -26,13 +26,27 @@
 grpc_slice grpc_compression_algorithm_slice(
     grpc_compression_algorithm algorithm);
 
+/** Return stream compression algorithm based metadata value */
+grpc_slice grpc_stream_compression_algorithm_slice(
+    grpc_stream_compression_algorithm algorithm);
+
 /** Return compression algorithm based metadata element (grpc-encoding: xxx) */
 grpc_mdelem grpc_compression_encoding_mdelem(
     grpc_compression_algorithm algorithm);
 
+/** Return stream compression algorithm based metadata element
+ * (content-encoding: xxx) */
+grpc_mdelem grpc_stream_compression_encoding_mdelem(
+    grpc_stream_compression_algorithm algorithm);
+
 /** Find compression algorithm based on passed in mdstr - returns
  * GRPC_COMPRESS_ALGORITHM_COUNT on failure */
 grpc_compression_algorithm grpc_compression_algorithm_from_slice(
     grpc_slice str);
 
+/** Find stream compression algorithm based on passed in mdstr - returns
+ * GRPC_STREAM_COMPRESS_ALGORITHM_COUNT on failure */
+grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice(
+    grpc_slice str);
+
 #endif /* GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H */
diff --git a/src/core/lib/compression/compression.c b/src/core/lib/compression/compression.c
index 8deae2798f..1cfac23129 100644
--- a/src/core/lib/compression/compression.c
+++ b/src/core/lib/compression/compression.c
@@ -46,8 +46,21 @@ int grpc_compression_algorithm_parse(grpc_slice name,
   }
 }
 
+int grpc_stream_compression_algorithm_parse(
+    grpc_slice name, grpc_stream_compression_algorithm *algorithm) {
+  if (grpc_slice_eq(name, GRPC_MDSTR_IDENTITY)) {
+    *algorithm = GRPC_STREAM_COMPRESS_NONE;
+    return 1;
+  } else if (grpc_slice_eq(name, GRPC_MDSTR_GZIP)) {
+    *algorithm = GRPC_STREAM_COMPRESS_GZIP;
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
 int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
-                                    char **name) {
+                                    const char **name) {
   GRPC_API_TRACE("grpc_compression_algorithm_parse(algorithm=%d, name=%p)", 2,
                  ((int)algorithm, name));
   switch (algorithm) {
@@ -66,6 +79,24 @@ int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
   return 0;
 }
 
+int grpc_stream_compression_algorithm_name(
+    grpc_stream_compression_algorithm algorithm, const char **name) {
+  GRPC_API_TRACE(
+      "grpc_stream_compression_algorithm_parse(algorithm=%d, name=%p)", 2,
+      ((int)algorithm, name));
+  switch (algorithm) {
+    case GRPC_STREAM_COMPRESS_NONE:
+      *name = "identity";
+      return 1;
+    case GRPC_STREAM_COMPRESS_GZIP:
+      *name = "gzip";
+      return 1;
+    case GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT:
+      return 0;
+  }
+  return 0;
+}
+
 grpc_compression_algorithm grpc_compression_algorithm_from_slice(
     grpc_slice str) {
   if (grpc_slice_eq(str, GRPC_MDSTR_IDENTITY)) return GRPC_COMPRESS_NONE;
@@ -74,6 +105,13 @@ grpc_compression_algorithm grpc_compression_algorithm_from_slice(
   return GRPC_COMPRESS_ALGORITHMS_COUNT;
 }
 
+grpc_stream_compression_algorithm grpc_stream_compression_algorithm_from_slice(
+    grpc_slice str) {
+  if (grpc_slice_eq(str, GRPC_MDSTR_IDENTITY)) return GRPC_STREAM_COMPRESS_NONE;
+  if (grpc_slice_eq(str, GRPC_MDSTR_GZIP)) return GRPC_STREAM_COMPRESS_GZIP;
+  return GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT;
+}
+
 grpc_slice grpc_compression_algorithm_slice(
     grpc_compression_algorithm algorithm) {
   switch (algorithm) {
@@ -89,6 +127,19 @@ grpc_slice grpc_compression_algorithm_slice(
   return grpc_empty_slice();
 }
 
+grpc_slice grpc_stream_compression_algorithm_slice(
+    grpc_stream_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_STREAM_COMPRESS_NONE:
+      return GRPC_MDSTR_IDENTITY;
+    case GRPC_STREAM_COMPRESS_GZIP:
+      return GRPC_MDSTR_GZIP;
+    case GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT:
+      return grpc_empty_slice();
+  }
+  return grpc_empty_slice();
+}
+
 grpc_mdelem grpc_compression_encoding_mdelem(
     grpc_compression_algorithm algorithm) {
   switch (algorithm) {
@@ -104,10 +155,25 @@ grpc_mdelem grpc_compression_encoding_mdelem(
   return GRPC_MDNULL;
 }
 
+grpc_mdelem grpc_stream_compression_encoding_mdelem(
+    grpc_stream_compression_algorithm algorithm) {
+  switch (algorithm) {
+    case GRPC_STREAM_COMPRESS_NONE:
+      return GRPC_MDELEM_CONTENT_ENCODING_IDENTITY;
+    case GRPC_STREAM_COMPRESS_GZIP:
+      return GRPC_MDELEM_CONTENT_ENCODING_GZIP;
+    default:
+      break;
+  }
+  return GRPC_MDNULL;
+}
+
 void grpc_compression_options_init(grpc_compression_options *opts) {
   memset(opts, 0, sizeof(*opts));
   /* all enabled by default */
   opts->enabled_algorithms_bitset = (1u << GRPC_COMPRESS_ALGORITHMS_COUNT) - 1;
+  opts->enabled_stream_compression_algorithms_bitset =
+      (1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) - 1;
 }
 
 void grpc_compression_options_enable_algorithm(
@@ -126,6 +192,13 @@ int grpc_compression_options_is_algorithm_enabled(
   return GPR_BITGET(opts->enabled_algorithms_bitset, algorithm);
 }
 
+int grpc_compression_options_is_stream_compression_algorithm_enabled(
+    const grpc_compression_options *opts,
+    grpc_stream_compression_algorithm algorithm) {
+  return GPR_BITGET(opts->enabled_stream_compression_algorithms_bitset,
+                    algorithm);
+}
+
 /* TODO(dgq): Add the ability to specify parameters to the individual
  * compression algorithms */
 grpc_compression_algorithm grpc_compression_algorithm_for_level(
@@ -181,3 +254,30 @@ grpc_compression_algorithm grpc_compression_algorithm_for_level(
       abort();
   };
 }
+
+GRPCAPI grpc_stream_compression_algorithm
+grpc_stream_compression_algorithm_for_level(
+    grpc_stream_compression_level level, uint32_t accepted_stream_encodings) {
+  GRPC_API_TRACE("grpc_stream_compression_algorithm_for_level(level=%d)", 1,
+                 ((int)level));
+  if (level > GRPC_STREAM_COMPRESS_LEVEL_HIGH) {
+    gpr_log(GPR_ERROR, "Unknown compression level %d.", (int)level);
+    abort();
+  }
+
+  switch (level) {
+    case GRPC_STREAM_COMPRESS_LEVEL_NONE:
+      return GRPC_STREAM_COMPRESS_NONE;
+    case GRPC_STREAM_COMPRESS_LEVEL_LOW:
+    case GRPC_STREAM_COMPRESS_LEVEL_MED:
+    case GRPC_STREAM_COMPRESS_LEVEL_HIGH:
+      if (GPR_BITGET(accepted_stream_encodings, GRPC_STREAM_COMPRESS_GZIP) ==
+          1) {
+        return GRPC_STREAM_COMPRESS_GZIP;
+      } else {
+        return GRPC_STREAM_COMPRESS_NONE;
+      }
+    default:
+      abort();
+  }
+}
diff --git a/src/core/lib/compression/stream_compression.c b/src/core/lib/compression/stream_compression.c
index df13d53e06..411489f029 100644
--- a/src/core/lib/compression/stream_compression.c
+++ b/src/core/lib/compression/stream_compression.c
@@ -16,176 +16,62 @@
  *
  */
 
-#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
 #include "src/core/lib/compression/stream_compression.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/compression/stream_compression_gzip.h"
 
-#define OUTPUT_BLOCK_SIZE (1024)
-
-static bool gzip_flate(grpc_stream_compression_context *ctx,
-                       grpc_slice_buffer *in, grpc_slice_buffer *out,
-                       size_t *output_size, size_t max_output_size, int flush,
-                       bool *end_of_context) {
-  GPR_ASSERT(flush == 0 || flush == Z_SYNC_FLUSH || flush == Z_FINISH);
-  /* Full flush is not allowed when inflating. */
-  GPR_ASSERT(!(ctx->flate == inflate && (flush == Z_FINISH)));
-
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  int r;
-  bool eoc = false;
-  size_t original_max_output_size = max_output_size;
-  while (max_output_size > 0 && (in->length > 0 || flush) && !eoc) {
-    size_t slice_size = max_output_size < OUTPUT_BLOCK_SIZE ? max_output_size
-                                                            : OUTPUT_BLOCK_SIZE;
-    grpc_slice slice_out = GRPC_SLICE_MALLOC(slice_size);
-    ctx->zs.avail_out = (uInt)slice_size;
-    ctx->zs.next_out = GRPC_SLICE_START_PTR(slice_out);
-    while (ctx->zs.avail_out > 0 && in->length > 0 && !eoc) {
-      grpc_slice slice = grpc_slice_buffer_take_first(in);
-      ctx->zs.avail_in = (uInt)GRPC_SLICE_LENGTH(slice);
-      ctx->zs.next_in = GRPC_SLICE_START_PTR(slice);
-      r = ctx->flate(&ctx->zs, Z_NO_FLUSH);
-      if (r < 0 && r != Z_BUF_ERROR) {
-        gpr_log(GPR_ERROR, "zlib error (%d)", r);
-        grpc_slice_unref_internal(&exec_ctx, slice_out);
-        grpc_exec_ctx_finish(&exec_ctx);
-        return false;
-      } else if (r == Z_STREAM_END && ctx->flate == inflate) {
-        eoc = true;
-      }
-      if (ctx->zs.avail_in > 0) {
-        grpc_slice_buffer_undo_take_first(
-            in,
-            grpc_slice_sub(slice, GRPC_SLICE_LENGTH(slice) - ctx->zs.avail_in,
-                           GRPC_SLICE_LENGTH(slice)));
-      }
-      grpc_slice_unref_internal(&exec_ctx, slice);
-    }
-    if (flush != 0 && ctx->zs.avail_out > 0 && !eoc) {
-      GPR_ASSERT(in->length == 0);
-      r = ctx->flate(&ctx->zs, flush);
-      if (flush == Z_SYNC_FLUSH) {
-        switch (r) {
-          case Z_OK:
-            /* Maybe flush is not complete; just made some partial progress. */
-            if (ctx->zs.avail_out > 0) {
-              flush = 0;
-            }
-            break;
-          case Z_BUF_ERROR:
-          case Z_STREAM_END:
-            flush = 0;
-            break;
-          default:
-            gpr_log(GPR_ERROR, "zlib error (%d)", r);
-            grpc_slice_unref_internal(&exec_ctx, slice_out);
-            grpc_exec_ctx_finish(&exec_ctx);
-            return false;
-        }
-      } else if (flush == Z_FINISH) {
-        switch (r) {
-          case Z_OK:
-          case Z_BUF_ERROR:
-            /* Wait for the next loop to assign additional output space. */
-            GPR_ASSERT(ctx->zs.avail_out == 0);
-            break;
-          case Z_STREAM_END:
-            flush = 0;
-            break;
-          default:
-            gpr_log(GPR_ERROR, "zlib error (%d)", r);
-            grpc_slice_unref_internal(&exec_ctx, slice_out);
-            grpc_exec_ctx_finish(&exec_ctx);
-            return false;
-        }
-      }
-    }
-
-    if (ctx->zs.avail_out == 0) {
-      grpc_slice_buffer_add(out, slice_out);
-    } else if (ctx->zs.avail_out < slice_size) {
-      slice_out.data.refcounted.length -= ctx->zs.avail_out;
-      grpc_slice_buffer_add(out, slice_out);
-    } else {
-      grpc_slice_unref_internal(&exec_ctx, slice_out);
-    }
-    max_output_size -= (slice_size - ctx->zs.avail_out);
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-  if (end_of_context) {
-    *end_of_context = eoc;
-  }
-  if (output_size) {
-    *output_size = original_max_output_size - max_output_size;
-  }
-  return true;
-}
+extern const grpc_stream_compression_vtable
+    grpc_stream_compression_identity_vtable;
 
 bool grpc_stream_compress(grpc_stream_compression_context *ctx,
                           grpc_slice_buffer *in, grpc_slice_buffer *out,
                           size_t *output_size, size_t max_output_size,
                           grpc_stream_compression_flush flush) {
-  GPR_ASSERT(ctx->flate == deflate);
-  int gzip_flush;
-  switch (flush) {
-    case GRPC_STREAM_COMPRESSION_FLUSH_NONE:
-      gzip_flush = 0;
-      break;
-    case GRPC_STREAM_COMPRESSION_FLUSH_SYNC:
-      gzip_flush = Z_SYNC_FLUSH;
-      break;
-    case GRPC_STREAM_COMPRESSION_FLUSH_FINISH:
-      gzip_flush = Z_FINISH;
-      break;
-    default:
-      gzip_flush = 0;
-  }
-  return gzip_flate(ctx, in, out, output_size, max_output_size, gzip_flush,
-                    NULL);
+  return ctx->vtable->compress(ctx, in, out, output_size, max_output_size,
+                               flush);
 }
 
 bool grpc_stream_decompress(grpc_stream_compression_context *ctx,
                             grpc_slice_buffer *in, grpc_slice_buffer *out,
                             size_t *output_size, size_t max_output_size,
                             bool *end_of_context) {
-  GPR_ASSERT(ctx->flate == inflate);
-  return gzip_flate(ctx, in, out, output_size, max_output_size, Z_SYNC_FLUSH,
-                    end_of_context);
+  return ctx->vtable->decompress(ctx, in, out, output_size, max_output_size,
+                                 end_of_context);
 }
 
 grpc_stream_compression_context *grpc_stream_compression_context_create(
     grpc_stream_compression_method method) {
-  grpc_stream_compression_context *ctx =
-      gpr_zalloc(sizeof(grpc_stream_compression_context));
-  int r;
-  if (ctx == NULL) {
-    return NULL;
-  }
-  if (method == GRPC_STREAM_COMPRESSION_DECOMPRESS) {
-    r = inflateInit2(&ctx->zs, 0x1F);
-    ctx->flate = inflate;
-  } else {
-    r = deflateInit2(&ctx->zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 0x1F, 8,
-                     Z_DEFAULT_STRATEGY);
-    ctx->flate = deflate;
-  }
-  if (r != Z_OK) {
-    gpr_free(ctx);
-    return NULL;
+  switch (method) {
+    case GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS:
+    case GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS:
+      return grpc_stream_compression_identity_vtable.context_create(method);
+    case GRPC_STREAM_COMPRESSION_GZIP_COMPRESS:
+    case GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS:
+      return grpc_stream_compression_gzip_vtable.context_create(method);
+    default:
+      gpr_log(GPR_ERROR, "Unknown stream compression method: %d", method);
+      return NULL;
   }
-
-  return ctx;
 }
 
 void grpc_stream_compression_context_destroy(
     grpc_stream_compression_context *ctx) {
-  if (ctx->flate == inflate) {
-    inflateEnd(&ctx->zs);
+  ctx->vtable->context_destroy(ctx);
+}
+
+int grpc_stream_compression_method_parse(
+    grpc_slice value, bool is_compress,
+    grpc_stream_compression_method *method) {
+  if (grpc_slice_eq(value, GRPC_MDSTR_IDENTITY)) {
+    *method = is_compress ? GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS
+                          : GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS;
+    return 1;
+  } else if (grpc_slice_eq(value, GRPC_MDSTR_GZIP)) {
+    *method = is_compress ? GRPC_STREAM_COMPRESSION_GZIP_COMPRESS
+                          : GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS;
+    return 1;
   } else {
-    deflateEnd(&ctx->zs);
+    return 0;
   }
-  gpr_free(ctx);
 }
diff --git a/src/core/lib/compression/stream_compression.h b/src/core/lib/compression/stream_compression.h
index 844dff81a3..6d073280fa 100644
--- a/src/core/lib/compression/stream_compression.h
+++ b/src/core/lib/compression/stream_compression.h
@@ -24,15 +24,20 @@
 #include <grpc/slice_buffer.h>
 #include <zlib.h>
 
+#include "src/core/lib/transport/static_metadata.h"
+
+typedef struct grpc_stream_compression_vtable grpc_stream_compression_vtable;
+
 /* Stream compression/decompression context */
 typedef struct grpc_stream_compression_context {
-  z_stream zs;
-  int (*flate)(z_stream *zs, int flush);
+  const grpc_stream_compression_vtable *vtable;
 } grpc_stream_compression_context;
 
 typedef enum grpc_stream_compression_method {
-  GRPC_STREAM_COMPRESSION_COMPRESS = 0,
-  GRPC_STREAM_COMPRESSION_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS = 0,
+  GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_COMPRESS,
+  GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS,
   GRPC_STREAM_COMPRESSION_METHOD_COUNT
 } grpc_stream_compression_method;
 
@@ -43,6 +48,19 @@ typedef enum grpc_stream_compression_flush {
   GRPC_STREAM_COMPRESSION_FLUSH_COUNT
 } grpc_stream_compression_flush;
 
+struct grpc_stream_compression_vtable {
+  bool (*compress)(grpc_stream_compression_context *ctx, grpc_slice_buffer *in,
+                   grpc_slice_buffer *out, size_t *output_size,
+                   size_t max_output_size, grpc_stream_compression_flush flush);
+  bool (*decompress)(grpc_stream_compression_context *ctx,
+                     grpc_slice_buffer *in, grpc_slice_buffer *out,
+                     size_t *output_size, size_t max_output_size,
+                     bool *end_of_context);
+  grpc_stream_compression_context *(*context_create)(
+      grpc_stream_compression_method method);
+  void (*context_destroy)(grpc_stream_compression_context *ctx);
+};
+
 /**
  * Compress bytes provided in \a in with a given context, with an optional flush
  * at the end of compression. Emits at most \a max_output_size compressed bytes
@@ -87,4 +105,10 @@ grpc_stream_compression_context *grpc_stream_compression_context_create(
 void grpc_stream_compression_context_destroy(
     grpc_stream_compression_context *ctx);
 
+/**
+ * Parse stream compression method based on algorithm name
+ */
+int grpc_stream_compression_method_parse(
+    grpc_slice value, bool is_compress, grpc_stream_compression_method *method);
+
 #endif
diff --git a/src/core/lib/compression/stream_compression_gzip.c b/src/core/lib/compression/stream_compression_gzip.c
new file mode 100644
index 0000000000..abcbdb3a91
--- /dev/null
+++ b/src/core/lib/compression/stream_compression_gzip.c
@@ -0,0 +1,228 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression_gzip.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+#define OUTPUT_BLOCK_SIZE (1024)
+
+typedef struct grpc_stream_compression_context_gzip {
+  grpc_stream_compression_context base;
+
+  z_stream zs;
+  int (*flate)(z_stream *zs, int flush);
+} grpc_stream_compression_context_gzip;
+
+static bool gzip_flate(grpc_stream_compression_context_gzip *ctx,
+                       grpc_slice_buffer *in, grpc_slice_buffer *out,
+                       size_t *output_size, size_t max_output_size, int flush,
+                       bool *end_of_context) {
+  GPR_ASSERT(flush == 0 || flush == Z_SYNC_FLUSH || flush == Z_FINISH);
+  /* Full flush is not allowed when inflating. */
+  GPR_ASSERT(!(ctx->flate == inflate && (flush == Z_FINISH)));
+
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  int r;
+  bool eoc = false;
+  size_t original_max_output_size = max_output_size;
+  while (max_output_size > 0 && (in->length > 0 || flush) && !eoc) {
+    size_t slice_size = max_output_size < OUTPUT_BLOCK_SIZE ? max_output_size
+                                                            : OUTPUT_BLOCK_SIZE;
+    grpc_slice slice_out = GRPC_SLICE_MALLOC(slice_size);
+    ctx->zs.avail_out = (uInt)slice_size;
+    ctx->zs.next_out = GRPC_SLICE_START_PTR(slice_out);
+    while (ctx->zs.avail_out > 0 && in->length > 0 && !eoc) {
+      grpc_slice slice = grpc_slice_buffer_take_first(in);
+      ctx->zs.avail_in = (uInt)GRPC_SLICE_LENGTH(slice);
+      ctx->zs.next_in = GRPC_SLICE_START_PTR(slice);
+      r = ctx->flate(&ctx->zs, Z_NO_FLUSH);
+      if (r < 0 && r != Z_BUF_ERROR) {
+        gpr_log(GPR_ERROR, "zlib error (%d)", r);
+        grpc_slice_unref_internal(&exec_ctx, slice_out);
+        grpc_exec_ctx_finish(&exec_ctx);
+        return false;
+      } else if (r == Z_STREAM_END && ctx->flate == inflate) {
+        eoc = true;
+      }
+      if (ctx->zs.avail_in > 0) {
+        grpc_slice_buffer_undo_take_first(
+            in,
+            grpc_slice_sub(slice, GRPC_SLICE_LENGTH(slice) - ctx->zs.avail_in,
+                           GRPC_SLICE_LENGTH(slice)));
+      }
+      grpc_slice_unref_internal(&exec_ctx, slice);
+    }
+    if (flush != 0 && ctx->zs.avail_out > 0 && !eoc) {
+      GPR_ASSERT(in->length == 0);
+      r = ctx->flate(&ctx->zs, flush);
+      if (flush == Z_SYNC_FLUSH) {
+        switch (r) {
+          case Z_OK:
+            /* Maybe flush is not complete; just made some partial progress. */
+            if (ctx->zs.avail_out > 0) {
+              flush = 0;
+            }
+            break;
+          case Z_BUF_ERROR:
+          case Z_STREAM_END:
+            flush = 0;
+            break;
+          default:
+            gpr_log(GPR_ERROR, "zlib error (%d)", r);
+            grpc_slice_unref_internal(&exec_ctx, slice_out);
+            grpc_exec_ctx_finish(&exec_ctx);
+            return false;
+        }
+      } else if (flush == Z_FINISH) {
+        switch (r) {
+          case Z_OK:
+          case Z_BUF_ERROR:
+            /* Wait for the next loop to assign additional output space. */
+            GPR_ASSERT(ctx->zs.avail_out == 0);
+            break;
+          case Z_STREAM_END:
+            flush = 0;
+            break;
+          default:
+            gpr_log(GPR_ERROR, "zlib error (%d)", r);
+            grpc_slice_unref_internal(&exec_ctx, slice_out);
+            grpc_exec_ctx_finish(&exec_ctx);
+            return false;
+        }
+      }
+    }
+
+    if (ctx->zs.avail_out == 0) {
+      grpc_slice_buffer_add(out, slice_out);
+    } else if (ctx->zs.avail_out < slice_size) {
+      slice_out.data.refcounted.length -= ctx->zs.avail_out;
+      grpc_slice_buffer_add(out, slice_out);
+    } else {
+      grpc_slice_unref_internal(&exec_ctx, slice_out);
+    }
+    max_output_size -= (slice_size - ctx->zs.avail_out);
+  }
+  grpc_exec_ctx_finish(&exec_ctx);
+  if (end_of_context) {
+    *end_of_context = eoc;
+  }
+  if (output_size) {
+    *output_size = original_max_output_size - max_output_size;
+  }
+  return true;
+}
+
+static bool grpc_stream_compress_gzip(grpc_stream_compression_context *ctx,
+                                      grpc_slice_buffer *in,
+                                      grpc_slice_buffer *out,
+                                      size_t *output_size,
+                                      size_t max_output_size,
+                                      grpc_stream_compression_flush flush) {
+  if (ctx == NULL) {
+    return false;
+  }
+  grpc_stream_compression_context_gzip *gzip_ctx =
+      (grpc_stream_compression_context_gzip *)ctx;
+  GPR_ASSERT(gzip_ctx->flate == deflate);
+  int gzip_flush;
+  switch (flush) {
+    case GRPC_STREAM_COMPRESSION_FLUSH_NONE:
+      gzip_flush = 0;
+      break;
+    case GRPC_STREAM_COMPRESSION_FLUSH_SYNC:
+      gzip_flush = Z_SYNC_FLUSH;
+      break;
+    case GRPC_STREAM_COMPRESSION_FLUSH_FINISH:
+      gzip_flush = Z_FINISH;
+      break;
+    default:
+      gzip_flush = 0;
+  }
+  return gzip_flate(gzip_ctx, in, out, output_size, max_output_size, gzip_flush,
+                    NULL);
+}
+
+static bool grpc_stream_decompress_gzip(grpc_stream_compression_context *ctx,
+                                        grpc_slice_buffer *in,
+                                        grpc_slice_buffer *out,
+                                        size_t *output_size,
+                                        size_t max_output_size,
+                                        bool *end_of_context) {
+  if (ctx == NULL) {
+    return false;
+  }
+  grpc_stream_compression_context_gzip *gzip_ctx =
+      (grpc_stream_compression_context_gzip *)ctx;
+  GPR_ASSERT(gzip_ctx->flate == inflate);
+  return gzip_flate(gzip_ctx, in, out, output_size, max_output_size,
+                    Z_SYNC_FLUSH, end_of_context);
+}
+
+static grpc_stream_compression_context *
+grpc_stream_compression_context_create_gzip(
+    grpc_stream_compression_method method) {
+  GPR_ASSERT(method == GRPC_STREAM_COMPRESSION_GZIP_COMPRESS ||
+             method == GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
+  grpc_stream_compression_context_gzip *gzip_ctx =
+      (grpc_stream_compression_context_gzip *)gpr_zalloc(
+          sizeof(grpc_stream_compression_context_gzip));
+  int r;
+  if (gzip_ctx == NULL) {
+    return NULL;
+  }
+  if (method == GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS) {
+    r = inflateInit2(&gzip_ctx->zs, 0x1F);
+    gzip_ctx->flate = inflate;
+  } else {
+    r = deflateInit2(&gzip_ctx->zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 0x1F, 8,
+                     Z_DEFAULT_STRATEGY);
+    gzip_ctx->flate = deflate;
+  }
+  if (r != Z_OK) {
+    gpr_free(gzip_ctx);
+    return NULL;
+  }
+
+  gzip_ctx->base.vtable = &grpc_stream_compression_gzip_vtable;
+  return (grpc_stream_compression_context *)gzip_ctx;
+}
+
+static void grpc_stream_compression_context_destroy_gzip(
+    grpc_stream_compression_context *ctx) {
+  if (ctx == NULL) {
+    return;
+  }
+  grpc_stream_compression_context_gzip *gzip_ctx =
+      (grpc_stream_compression_context_gzip *)ctx;
+  if (gzip_ctx->flate == inflate) {
+    inflateEnd(&gzip_ctx->zs);
+  } else {
+    deflateEnd(&gzip_ctx->zs);
+  }
+  gpr_free(ctx);
+}
+
+const grpc_stream_compression_vtable grpc_stream_compression_gzip_vtable = {
+    .compress = grpc_stream_compress_gzip,
+    .decompress = grpc_stream_decompress_gzip,
+    .context_create = grpc_stream_compression_context_create_gzip,
+    .context_destroy = grpc_stream_compression_context_destroy_gzip};
diff --git a/src/core/lib/iomgr/ev_epoll_thread_pool_linux.h b/src/core/lib/compression/stream_compression_gzip.h
index 2ca68cc9d1..7cf49a0de9 100644
--- a/src/core/lib/iomgr/ev_epoll_thread_pool_linux.h
+++ b/src/core/lib/compression/stream_compression_gzip.h
@@ -16,13 +16,11 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLL_THREAD_POOL_LINUX_H
-#define GRPC_CORE_LIB_IOMGR_EV_EPOLL_THREAD_POOL_LINUX_H
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_GZIP_H
 
-#include "src/core/lib/iomgr/ev_posix.h"
-#include "src/core/lib/iomgr/port.h"
+#include "src/core/lib/compression/stream_compression.h"
 
-const grpc_event_engine_vtable *grpc_init_epoll_thread_pool_linux(
-    bool requested_explicitly);
+extern const grpc_stream_compression_vtable grpc_stream_compression_gzip_vtable;
 
-#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLL_THREAD_POOL_LINUX_H */
+#endif
diff --git a/src/core/lib/compression/stream_compression_identity.c b/src/core/lib/compression/stream_compression_identity.c
new file mode 100644
index 0000000000..3dfcf53b85
--- /dev/null
+++ b/src/core/lib/compression/stream_compression_identity.c
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/compression/stream_compression_identity.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+#define OUTPUT_BLOCK_SIZE (1024)
+
+/* Singleton context used for all identity streams. */
+static grpc_stream_compression_context identity_ctx = {
+    .vtable = &grpc_stream_compression_identity_vtable};
+
+static void grpc_stream_compression_pass_through(grpc_slice_buffer *in,
+                                                 grpc_slice_buffer *out,
+                                                 size_t *output_size,
+                                                 size_t max_output_size) {
+  if (max_output_size >= in->length) {
+    if (output_size) {
+      *output_size = in->length;
+    }
+    grpc_slice_buffer_move_into(in, out);
+  } else {
+    if (output_size) {
+      *output_size = max_output_size;
+    }
+    grpc_slice_buffer_move_first(in, max_output_size, out);
+  }
+}
+
+static bool grpc_stream_compress_identity(grpc_stream_compression_context *ctx,
+                                          grpc_slice_buffer *in,
+                                          grpc_slice_buffer *out,
+                                          size_t *output_size,
+                                          size_t max_output_size,
+                                          grpc_stream_compression_flush flush) {
+  if (ctx == NULL) {
+    return false;
+  }
+  grpc_stream_compression_pass_through(in, out, output_size, max_output_size);
+  return true;
+}
+
+static bool grpc_stream_decompress_identity(
+    grpc_stream_compression_context *ctx, grpc_slice_buffer *in,
+    grpc_slice_buffer *out, size_t *output_size, size_t max_output_size,
+    bool *end_of_context) {
+  if (ctx == NULL) {
+    return false;
+  }
+  grpc_stream_compression_pass_through(in, out, output_size, max_output_size);
+  if (end_of_context) {
+    *end_of_context = false;
+  }
+  return true;
+}
+
+static grpc_stream_compression_context *
+grpc_stream_compression_context_create_identity(
+    grpc_stream_compression_method method) {
+  GPR_ASSERT(method == GRPC_STREAM_COMPRESSION_IDENTITY_COMPRESS ||
+             method == GRPC_STREAM_COMPRESSION_IDENTITY_DECOMPRESS);
+  /* No context needed in this case. Use fake context instead. */
+  return (grpc_stream_compression_context *)&identity_ctx;
+}
+
+static void grpc_stream_compression_context_destroy_identity(
+    grpc_stream_compression_context *ctx) {
+  return;
+}
+
+const grpc_stream_compression_vtable grpc_stream_compression_identity_vtable = {
+    .compress = grpc_stream_compress_identity,
+    .decompress = grpc_stream_decompress_identity,
+    .context_create = grpc_stream_compression_context_create_identity,
+    .context_destroy = grpc_stream_compression_context_destroy_identity};
diff --git a/src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h b/src/core/lib/compression/stream_compression_identity.h
index 1d6af5f52c..41926e949e 100644
--- a/src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h
+++ b/src/core/lib/compression/stream_compression_identity.h
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015 gRPC authors.
+ * Copyright 2017 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,13 +16,12 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLL_LIMITED_POLLERS_LINUX_H
-#define GRPC_CORE_LIB_IOMGR_EV_EPOLL_LIMITED_POLLERS_LINUX_H
+#ifndef GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
+#define GRPC_CORE_LIB_COMPRESSION_STREAM_COMPRESSION_IDENTITY_H
 
-#include "src/core/lib/iomgr/ev_posix.h"
-#include "src/core/lib/iomgr/port.h"
+#include "src/core/lib/compression/stream_compression.h"
 
-const grpc_event_engine_vtable *grpc_init_epoll_limited_pollers_linux(
-    bool explicitly_requested);
+extern const grpc_stream_compression_vtable
+    grpc_stream_compression_identity_vtable;
 
-#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLL_LIMITED_POLLERS_LINUX_H */
+#endif
diff --git a/src/core/lib/debug/stats.c b/src/core/lib/debug/stats.c
new file mode 100644
index 0000000000..4096384dd9
--- /dev/null
+++ b/src/core/lib/debug/stats.c
@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/debug/stats.h"
+
+#include <inttypes.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/support/string.h"
+
+grpc_stats_data *grpc_stats_per_cpu_storage = NULL;
+static size_t g_num_cores;
+
+void grpc_stats_init(void) {
+  g_num_cores = GPR_MAX(1, gpr_cpu_num_cores());
+  grpc_stats_per_cpu_storage =
+      (grpc_stats_data *)gpr_zalloc(sizeof(grpc_stats_data) * g_num_cores);
+}
+
+void grpc_stats_shutdown(void) { gpr_free(grpc_stats_per_cpu_storage); }
+
+void grpc_stats_collect(grpc_stats_data *output) {
+  memset(output, 0, sizeof(*output));
+  for (size_t core = 0; core < g_num_cores; core++) {
+    for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+      output->counters[i] += gpr_atm_no_barrier_load(
+          &grpc_stats_per_cpu_storage[core].counters[i]);
+    }
+    for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_BUCKETS; i++) {
+      output->histograms[i] += gpr_atm_no_barrier_load(
+          &grpc_stats_per_cpu_storage[core].histograms[i]);
+    }
+  }
+}
+
+void grpc_stats_diff(const grpc_stats_data *b, const grpc_stats_data *a,
+                     grpc_stats_data *c) {
+  for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    c->counters[i] = b->counters[i] - a->counters[i];
+  }
+  for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_BUCKETS; i++) {
+    c->histograms[i] = b->histograms[i] - a->histograms[i];
+  }
+}
+
+int grpc_stats_histo_find_bucket_slow(grpc_exec_ctx *exec_ctx, int value,
+                                      const int *table, int table_size) {
+  GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS(exec_ctx);
+  const int *const start = table;
+  while (table_size > 0) {
+    int step = table_size / 2;
+    const int *it = table + step;
+    if (value >= *it) {
+      table = it + 1;
+      table_size -= step + 1;
+    } else {
+      table_size = step;
+    }
+  }
+  return (int)(table - start) - 1;
+}
+
+size_t grpc_stats_histo_count(const grpc_stats_data *stats,
+                              grpc_stats_histograms histogram) {
+  size_t sum = 0;
+  for (int i = 0; i < grpc_stats_histo_buckets[histogram]; i++) {
+    sum += (size_t)stats->histograms[grpc_stats_histo_start[histogram] + i];
+  }
+  return sum;
+}
+
+static double threshold_for_count_below(const gpr_atm *bucket_counts,
+                                        const int *bucket_boundaries,
+                                        int num_buckets, double count_below) {
+  double count_so_far;
+  double lower_bound;
+  double upper_bound;
+  int lower_idx;
+  int upper_idx;
+
+  /* find the lowest bucket that gets us above count_below */
+  count_so_far = 0.0;
+  for (lower_idx = 0; lower_idx < num_buckets; lower_idx++) {
+    count_so_far += (double)bucket_counts[lower_idx];
+    if (count_so_far >= count_below) {
+      break;
+    }
+  }
+  if (count_so_far == count_below) {
+    /* this bucket hits the threshold exactly... we should be midway through
+       any run of zero values following the bucket */
+    for (upper_idx = lower_idx + 1; upper_idx < num_buckets; upper_idx++) {
+      if (bucket_counts[upper_idx]) {
+        break;
+      }
+    }
+    return (bucket_boundaries[lower_idx] + bucket_boundaries[upper_idx]) / 2.0;
+  } else {
+    /* treat values as uniform throughout the bucket, and find where this value
+       should lie */
+    lower_bound = bucket_boundaries[lower_idx];
+    upper_bound = bucket_boundaries[lower_idx + 1];
+    return upper_bound -
+           (upper_bound - lower_bound) * (count_so_far - count_below) /
+               (double)bucket_counts[lower_idx];
+  }
+}
+
+double grpc_stats_histo_percentile(const grpc_stats_data *stats,
+                                   grpc_stats_histograms histogram,
+                                   double percentile) {
+  size_t count = grpc_stats_histo_count(stats, histogram);
+  if (count == 0) return 0.0;
+  return threshold_for_count_below(
+      stats->histograms + grpc_stats_histo_start[histogram],
+      grpc_stats_histo_bucket_boundaries[histogram],
+      grpc_stats_histo_buckets[histogram], (double)count * percentile / 100.0);
+}
+
+char *grpc_stats_data_as_json(const grpc_stats_data *data) {
+  gpr_strvec v;
+  char *tmp;
+  bool is_first = true;
+  gpr_strvec_init(&v);
+  gpr_strvec_add(&v, gpr_strdup("{"));
+  for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    gpr_asprintf(&tmp, "%s\"%s\": %" PRIdPTR, is_first ? "" : ", ",
+                 grpc_stats_counter_name[i], data->counters[i]);
+    gpr_strvec_add(&v, tmp);
+    is_first = false;
+  }
+  for (size_t i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    gpr_asprintf(&tmp, "%s\"%s\": [", is_first ? "" : ", ",
+                 grpc_stats_histogram_name[i]);
+    gpr_strvec_add(&v, tmp);
+    for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
+      gpr_asprintf(&tmp, "%s%" PRIdPTR, j == 0 ? "" : ",",
+                   data->histograms[grpc_stats_histo_start[i] + j]);
+      gpr_strvec_add(&v, tmp);
+    }
+    gpr_asprintf(&tmp, "], \"%s_bkt\": [", grpc_stats_histogram_name[i]);
+    gpr_strvec_add(&v, tmp);
+    for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
+      gpr_asprintf(&tmp, "%s%d", j == 0 ? "" : ",",
+                   grpc_stats_histo_bucket_boundaries[i][j]);
+      gpr_strvec_add(&v, tmp);
+    }
+    gpr_strvec_add(&v, gpr_strdup("]"));
+    is_first = false;
+  }
+  gpr_strvec_add(&v, gpr_strdup("}"));
+  tmp = gpr_strvec_flatten(&v, NULL);
+  gpr_strvec_destroy(&v);
+  return tmp;
+}
diff --git a/src/core/lib/debug/stats.h b/src/core/lib/debug/stats.h
new file mode 100644
index 0000000000..09d190d488
--- /dev/null
+++ b/src/core/lib/debug/stats.h
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_H
+#define GRPC_CORE_LIB_DEBUG_STATS_H
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/stats_data.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef struct grpc_stats_data {
+  gpr_atm counters[GRPC_STATS_COUNTER_COUNT];
+  gpr_atm histograms[GRPC_STATS_HISTOGRAM_BUCKETS];
+} grpc_stats_data;
+
+extern grpc_stats_data *grpc_stats_per_cpu_storage;
+
+#define GRPC_THREAD_STATS_DATA(exec_ctx) \
+  (&grpc_stats_per_cpu_storage[(exec_ctx)->starting_cpu])
+
+#define GRPC_STATS_INC_COUNTER(exec_ctx, ctr) \
+  (gpr_atm_no_barrier_fetch_add(              \
+      &GRPC_THREAD_STATS_DATA((exec_ctx))->counters[(ctr)], 1))
+
+#define GRPC_STATS_INC_HISTOGRAM(exec_ctx, histogram, index) \
+  (gpr_atm_no_barrier_fetch_add(                             \
+      &GRPC_THREAD_STATS_DATA((exec_ctx))                    \
+           ->histograms[histogram##_FIRST_SLOT + (index)],   \
+      1))
+
+void grpc_stats_init(void);
+void grpc_stats_shutdown(void);
+void grpc_stats_collect(grpc_stats_data *output);
+// c = b-a
+void grpc_stats_diff(const grpc_stats_data *b, const grpc_stats_data *a,
+                     grpc_stats_data *c);
+char *grpc_stats_data_as_json(const grpc_stats_data *data);
+int grpc_stats_histo_find_bucket_slow(grpc_exec_ctx *exec_ctx, int value,
+                                      const int *table, int table_size);
+double grpc_stats_histo_percentile(const grpc_stats_data *data,
+                                   grpc_stats_histograms histogram,
+                                   double percentile);
+size_t grpc_stats_histo_count(const grpc_stats_data *data,
+                              grpc_stats_histograms histogram);
+
+#endif
diff --git a/src/core/lib/debug/stats_data.c b/src/core/lib/debug/stats_data.c
new file mode 100644
index 0000000000..fb6055f795
--- /dev/null
+++ b/src/core/lib/debug/stats_data.c
@@ -0,0 +1,735 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_stats_data.py
+ */
+
+#include "src/core/lib/debug/stats_data.h"
+#include <grpc/support/useful.h>
+#include "src/core/lib/debug/stats.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+const char *grpc_stats_counter_name[GRPC_STATS_COUNTER_COUNT] = {
+    "client_calls_created",
+    "server_calls_created",
+    "cqs_created",
+    "client_channels_created",
+    "client_subchannels_created",
+    "server_channels_created",
+    "syscall_poll",
+    "syscall_wait",
+    "pollset_kick",
+    "pollset_kicked_without_poller",
+    "pollset_kicked_again",
+    "pollset_kick_wakeup_fd",
+    "pollset_kick_wakeup_cv",
+    "pollset_kick_own_thread",
+    "histogram_slow_lookups",
+    "syscall_write",
+    "syscall_read",
+    "tcp_backup_pollers_created",
+    "tcp_backup_poller_polls",
+    "http2_op_batches",
+    "http2_op_cancel",
+    "http2_op_send_initial_metadata",
+    "http2_op_send_message",
+    "http2_op_send_trailing_metadata",
+    "http2_op_recv_initial_metadata",
+    "http2_op_recv_message",
+    "http2_op_recv_trailing_metadata",
+    "http2_settings_writes",
+    "http2_pings_sent",
+    "http2_writes_begun",
+    "http2_writes_offloaded",
+    "http2_writes_continued",
+    "http2_partial_writes",
+    "http2_initiate_write_due_to_initial_write",
+    "http2_initiate_write_due_to_start_new_stream",
+    "http2_initiate_write_due_to_send_message",
+    "http2_initiate_write_due_to_send_initial_metadata",
+    "http2_initiate_write_due_to_send_trailing_metadata",
+    "http2_initiate_write_due_to_retry_send_ping",
+    "http2_initiate_write_due_to_continue_pings",
+    "http2_initiate_write_due_to_goaway_sent",
+    "http2_initiate_write_due_to_rst_stream",
+    "http2_initiate_write_due_to_close_from_api",
+    "http2_initiate_write_due_to_stream_flow_control",
+    "http2_initiate_write_due_to_transport_flow_control",
+    "http2_initiate_write_due_to_send_settings",
+    "http2_initiate_write_due_to_bdp_estimator_ping",
+    "http2_initiate_write_due_to_flow_control_unstalled_by_setting",
+    "http2_initiate_write_due_to_flow_control_unstalled_by_update",
+    "http2_initiate_write_due_to_application_ping",
+    "http2_initiate_write_due_to_keepalive_ping",
+    "http2_initiate_write_due_to_transport_flow_control_unstalled",
+    "http2_initiate_write_due_to_ping_response",
+    "http2_initiate_write_due_to_force_rst_stream",
+    "hpack_recv_indexed",
+    "hpack_recv_lithdr_incidx",
+    "hpack_recv_lithdr_incidx_v",
+    "hpack_recv_lithdr_notidx",
+    "hpack_recv_lithdr_notidx_v",
+    "hpack_recv_lithdr_nvridx",
+    "hpack_recv_lithdr_nvridx_v",
+    "hpack_recv_uncompressed",
+    "hpack_recv_huffman",
+    "hpack_recv_binary",
+    "hpack_recv_binary_base64",
+    "hpack_send_indexed",
+    "hpack_send_lithdr_incidx",
+    "hpack_send_lithdr_incidx_v",
+    "hpack_send_lithdr_notidx",
+    "hpack_send_lithdr_notidx_v",
+    "hpack_send_lithdr_nvridx",
+    "hpack_send_lithdr_nvridx_v",
+    "hpack_send_uncompressed",
+    "hpack_send_huffman",
+    "hpack_send_binary",
+    "hpack_send_binary_base64",
+    "combiner_locks_initiated",
+    "combiner_locks_scheduled_items",
+    "combiner_locks_scheduled_final_items",
+    "combiner_locks_offloaded",
+    "executor_scheduled_short_items",
+    "executor_scheduled_long_items",
+    "executor_scheduled_to_self",
+    "executor_wakeup_initiated",
+    "executor_queue_drained",
+    "executor_push_retries",
+    "executor_threads_created",
+    "executor_threads_used",
+    "server_requested_calls",
+    "server_slowpath_requests_queued",
+};
+const char *grpc_stats_counter_doc[GRPC_STATS_COUNTER_COUNT] = {
+    "Number of client side calls created by this process",
+    "Number of server side calls created by this process",
+    "Number of completion queues created", "Number of client channels created",
+    "Number of client subchannels created", "Number of server channels created",
+    "Number of polling syscalls (epoll_wait, poll, etc) made by this process",
+    "Number of sleeping syscalls made by this process",
+    "How many polling wakeups were performed by the process (only valid for "
+    "epoll1 right now)",
+    "How many times was a polling wakeup requested without an active poller "
+    "(only valid for epoll1 right now)",
+    "How many times was the same polling worker awoken repeatedly before "
+    "waking up (only valid for epoll1 right now)",
+    "How many times was an eventfd used as the wakeup vector for a polling "
+    "wakeup (only valid for epoll1 right now)",
+    "How many times was a condition variable used as the wakeup vector for a "
+    "polling wakeup (only valid for epoll1 right now)",
+    "How many times could a polling wakeup be satisfied by keeping the waking "
+    "thread awake? (only valid for epoll1 right now)",
+    "Number of times histogram increments went through the slow (binary "
+    "search) path",
+    "Number of write syscalls (or equivalent - eg sendmsg) made by this "
+    "process",
+    "Number of read syscalls (or equivalent - eg recvmsg) made by this process",
+    "Number of times a backup poller has been created (this can be expensive)",
+    "Number of polls performed on the backup poller",
+    "Number of batches received by HTTP2 transport",
+    "Number of cancelations received by HTTP2 transport",
+    "Number of batches containing send initial metadata",
+    "Number of batches containing send message",
+    "Number of batches containing send trailing metadata",
+    "Number of batches containing receive initial metadata",
+    "Number of batches containing receive message",
+    "Number of batches containing receive trailing metadata",
+    "Number of settings frames sent", "Number of HTTP2 pings sent by process",
+    "Number of HTTP2 writes initiated",
+    "Number of HTTP2 writes offloaded to the executor from application threads",
+    "Number of HTTP2 writes that finished seeing more data needed to be "
+    "written",
+    "Number of HTTP2 writes that were made knowing there was still more data "
+    "to be written (we cap maximum write size to syscall_write)",
+    "Number of HTTP2 writes initiated due to 'initial_write'",
+    "Number of HTTP2 writes initiated due to 'start_new_stream'",
+    "Number of HTTP2 writes initiated due to 'send_message'",
+    "Number of HTTP2 writes initiated due to 'send_initial_metadata'",
+    "Number of HTTP2 writes initiated due to 'send_trailing_metadata'",
+    "Number of HTTP2 writes initiated due to 'retry_send_ping'",
+    "Number of HTTP2 writes initiated due to 'continue_pings'",
+    "Number of HTTP2 writes initiated due to 'goaway_sent'",
+    "Number of HTTP2 writes initiated due to 'rst_stream'",
+    "Number of HTTP2 writes initiated due to 'close_from_api'",
+    "Number of HTTP2 writes initiated due to 'stream_flow_control'",
+    "Number of HTTP2 writes initiated due to 'transport_flow_control'",
+    "Number of HTTP2 writes initiated due to 'send_settings'",
+    "Number of HTTP2 writes initiated due to 'bdp_estimator_ping'",
+    "Number of HTTP2 writes initiated due to "
+    "'flow_control_unstalled_by_setting'",
+    "Number of HTTP2 writes initiated due to "
+    "'flow_control_unstalled_by_update'",
+    "Number of HTTP2 writes initiated due to 'application_ping'",
+    "Number of HTTP2 writes initiated due to 'keepalive_ping'",
+    "Number of HTTP2 writes initiated due to "
+    "'transport_flow_control_unstalled'",
+    "Number of HTTP2 writes initiated due to 'ping_response'",
+    "Number of HTTP2 writes initiated due to 'force_rst_stream'",
+    "Number of HPACK indexed fields received",
+    "Number of HPACK literal headers received with incremental indexing",
+    "Number of HPACK literal headers received with incremental indexing and "
+    "literal keys",
+    "Number of HPACK literal headers received with no indexing",
+    "Number of HPACK literal headers received with no indexing and literal "
+    "keys",
+    "Number of HPACK literal headers received with never-indexing",
+    "Number of HPACK literal headers received with never-indexing and literal "
+    "keys",
+    "Number of uncompressed strings received in metadata",
+    "Number of huffman encoded strings received in metadata",
+    "Number of binary strings received in metadata",
+    "Number of binary strings received encoded in base64 in metadata",
+    "Number of HPACK indexed fields sent",
+    "Number of HPACK literal headers sent with incremental indexing",
+    "Number of HPACK literal headers sent with incremental indexing and "
+    "literal keys",
+    "Number of HPACK literal headers sent with no indexing",
+    "Number of HPACK literal headers sent with no indexing and literal keys",
+    "Number of HPACK literal headers sent with never-indexing",
+    "Number of HPACK literal headers sent with never-indexing and literal keys",
+    "Number of uncompressed strings sent in metadata",
+    "Number of huffman encoded strings sent in metadata",
+    "Number of binary strings received in metadata",
+    "Number of binary strings received encoded in base64 in metadata",
+    "Number of combiner lock entries by process (first items queued to a "
+    "combiner)",
+    "Number of items scheduled against combiner locks",
+    "Number of final items scheduled against combiner locks",
+    "Number of combiner locks offloaded to different threads",
+    "Number of finite runtime closures scheduled against the executor (gRPC "
+    "thread pool)",
+    "Number of potentially infinite runtime closures scheduled against the "
+    "executor (gRPC thread pool)",
+    "Number of closures scheduled by the executor to the executor",
+    "Number of thread wakeups initiated within the executor",
+    "Number of times an executor queue was drained",
+    "Number of times we raced and were forced to retry pushing a closure to "
+    "the executor",
+    "Size of the backing thread pool for overflow gRPC Core work",
+    "How many executor threads actually got used",
+    "How many calls were requested (not necessarily received) by the server",
+    "How many times was the server slow path taken (indicates too few "
+    "outstanding requests)",
+};
+const char *grpc_stats_histogram_name[GRPC_STATS_HISTOGRAM_COUNT] = {
+    "call_initial_size",
+    "poll_events_returned",
+    "tcp_write_size",
+    "tcp_write_iov_size",
+    "tcp_read_size",
+    "tcp_read_offer",
+    "tcp_read_offer_iov_size",
+    "http2_send_message_size",
+    "http2_send_initial_metadata_per_write",
+    "http2_send_message_per_write",
+    "http2_send_trailing_metadata_per_write",
+    "http2_send_flowctl_per_write",
+    "executor_closures_per_wakeup",
+    "server_cqs_checked",
+};
+const char *grpc_stats_histogram_doc[GRPC_STATS_HISTOGRAM_COUNT] = {
+    "Initial size of the grpc_call arena created at call start",
+    "How many events are called for each syscall_poll",
+    "Number of bytes offered to each syscall_write",
+    "Number of byte segments offered to each syscall_write",
+    "Number of bytes received by each syscall_read",
+    "Number of bytes offered to each syscall_read",
+    "Number of byte segments offered to each syscall_read",
+    "Size of messages received by HTTP2 transport",
+    "Number of streams initiated written per TCP write",
+    "Number of streams whose payload was written per TCP write",
+    "Number of streams terminated per TCP write",
+    "Number of flow control updates written per TCP write",
+    "Number of closures executed each time an executor wakes up",
+    "How many completion queues were checked looking for a CQ that had "
+    "requested the incoming call",
+};
+const int grpc_stats_table_0[65] = {
+    0,      1,      2,      3,      4,     5,     7,     9,     11,    14,
+    17,     21,     26,     32,     39,    47,    57,    68,    82,    98,
+    117,    140,    167,    199,    238,   284,   339,   404,   482,   575,
+    685,    816,    972,    1158,   1380,  1644,  1959,  2334,  2780,  3312,
+    3945,   4699,   5597,   6667,   7941,  9459,  11267, 13420, 15984, 19038,
+    22676,  27009,  32169,  38315,  45635, 54353, 64737, 77104, 91834, 109378,
+    130273, 155159, 184799, 220100, 262144};
+const uint8_t grpc_stats_table_1[124] = {
+    0,  0,  0,  1,  1,  1,  2,  2,  3,  3,  3,  4,  4,  5,  5,  6,  6,  6,
+    7,  7,  7,  8,  9,  9,  10, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15,
+    15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 22, 23, 24,
+    24, 25, 25, 26, 26, 26, 27, 27, 28, 29, 29, 30, 30, 30, 31, 31, 32, 33,
+    33, 34, 34, 34, 35, 35, 36, 37, 37, 37, 38, 38, 39, 39, 40, 40, 41, 41,
+    42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 48, 48, 49, 49, 50, 50,
+    51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 56, 56, 57, 57, 58, 58};
+const int grpc_stats_table_2[129] = {
+    0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   10,  11,  12,  13,  14,
+    15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  30,
+    32,  34,  36,  38,  40,  42,  44,  46,  48,  50,  52,  54,  56,  58,  60,
+    63,  66,  69,  72,  75,  78,  81,  84,  87,  90,  94,  98,  102, 106, 110,
+    114, 118, 122, 126, 131, 136, 141, 146, 151, 156, 162, 168, 174, 180, 186,
+    192, 199, 206, 213, 220, 228, 236, 244, 252, 260, 269, 278, 287, 297, 307,
+    317, 327, 338, 349, 360, 372, 384, 396, 409, 422, 436, 450, 464, 479, 494,
+    510, 526, 543, 560, 578, 596, 615, 634, 654, 674, 695, 717, 739, 762, 785,
+    809, 834, 859, 885, 912, 939, 967, 996, 1024};
+const uint8_t grpc_stats_table_3[166] = {
+    0,  0,  0,  1,  1,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  6,  7,  7,
+    8,  8,  9,  9,  10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 16,
+    17, 17, 18, 19, 19, 20, 21, 21, 22, 23, 23, 24, 25, 25, 26, 26, 27, 27, 28,
+    28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, 34, 35, 36, 36, 37, 38, 39,
+    40, 40, 41, 42, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 49, 50, 50, 51,
+    51, 52, 52, 53, 53, 54, 54, 55, 56, 57, 58, 59, 59, 60, 61, 62, 63, 63, 64,
+    65, 65, 66, 67, 67, 68, 69, 69, 70, 71, 71, 72, 72, 73, 73, 74, 75, 75, 76,
+    76, 77, 78, 79, 79, 80, 81, 82, 83, 84, 85, 85, 86, 87, 88, 88, 89, 90, 90,
+    91, 92, 92, 93, 94, 94, 95, 95, 96, 97, 97, 98, 98, 99};
+const int grpc_stats_table_4[65] = {
+    0,       1,       2,       3,       4,       6,       8,        11,
+    15,      20,      26,      34,      44,      57,      73,       94,
+    121,     155,     199,     255,     327,     419,     537,      688,
+    881,     1128,    1444,    1848,    2365,    3026,    3872,     4954,
+    6338,    8108,    10373,   13270,   16976,   21717,   27782,    35541,
+    45467,   58165,   74409,   95189,   121772,  155778,  199281,   254933,
+    326126,  417200,  533707,  682750,  873414,  1117323, 1429345,  1828502,
+    2339127, 2992348, 3827987, 4896985, 6264509, 8013925, 10251880, 13114801,
+    16777216};
+const uint8_t grpc_stats_table_5[87] = {
+    0,  0,  1,  1,  2,  3,  3,  4,  4,  5,  6,  6,  7,  8,  8,  9,  10, 11,
+    11, 12, 13, 13, 14, 15, 15, 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23,
+    24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 36,
+    36, 37, 38, 39, 39, 40, 41, 41, 42, 43, 44, 44, 45, 45, 46, 47, 48, 48,
+    49, 50, 51, 51, 52, 53, 53, 54, 55, 56, 56, 57, 58, 58, 59};
+const int grpc_stats_table_6[65] = {
+    0,   1,   2,   3,   4,   5,   6,   7,   8,   9,   10,  11,  12,
+    14,  16,  18,  20,  22,  24,  27,  30,  33,  36,  39,  43,  47,
+    51,  56,  61,  66,  72,  78,  85,  92,  100, 109, 118, 128, 139,
+    151, 164, 178, 193, 209, 226, 244, 264, 285, 308, 333, 359, 387,
+    418, 451, 486, 524, 565, 609, 656, 707, 762, 821, 884, 952, 1024};
+const uint8_t grpc_stats_table_7[102] = {
+    0,  0,  0,  1,  1,  1,  1,  2,  2,  3,  3,  4,  4,  5,  5,  6,  6,
+    6,  7,  7,  7,  8,  8,  9,  9,  10, 11, 11, 12, 12, 13, 13, 14, 14,
+    14, 15, 15, 16, 16, 17, 17, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23,
+    23, 24, 24, 24, 25, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32,
+    32, 33, 33, 34, 35, 35, 36, 37, 37, 38, 38, 39, 39, 40, 40, 41, 41,
+    42, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 49, 50, 50, 51, 51};
+const int grpc_stats_table_8[9] = {0, 1, 2, 4, 7, 13, 23, 39, 64};
+const uint8_t grpc_stats_table_9[9] = {0, 0, 1, 2, 2, 3, 4, 4, 5};
+void grpc_stats_inc_call_initial_size(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 262144);
+  if (value < 6) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4651092515166879744ull) {
+    int bucket =
+        grpc_stats_table_1[((_val.uint - 4618441417868443648ull) >> 49)] + 6;
+    _bkt.dbl = grpc_stats_table_0[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_0, 64));
+}
+void grpc_stats_inc_poll_events_returned(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 29) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4642789003353915392ull) {
+    int bucket =
+        grpc_stats_table_3[((_val.uint - 4628855992006737920ull) >> 47)] + 29;
+    _bkt.dbl = grpc_stats_table_2[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_2, 128));
+}
+void grpc_stats_inc_tcp_write_size(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_write_iov_size(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_tcp_read_size(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_read_offer(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+                             value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+                             bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_tcp_read_offer_iov_size(grpc_exec_ctx *exec_ctx,
+                                            int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_message_size(grpc_exec_ctx *exec_ctx,
+                                            int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 16777216);
+  if (value < 5) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4683743612465315840ull) {
+    int bucket =
+        grpc_stats_table_5[((_val.uint - 4617315517961601024ull) >> 50)] + 5;
+    _bkt.dbl = grpc_stats_table_4[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_4, 64));
+}
+void grpc_stats_inc_http2_send_initial_metadata_per_write(
+    grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+        value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+        bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow((exec_ctx), value, grpc_stats_table_6,
+                                        64));
+}
+void grpc_stats_inc_http2_send_message_per_write(grpc_exec_ctx *exec_ctx,
+                                                 int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_http2_send_trailing_metadata_per_write(
+    grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+        value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+        bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM(
+      (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+      grpc_stats_histo_find_bucket_slow((exec_ctx), value, grpc_stats_table_6,
+                                        64));
+}
+void grpc_stats_inc_http2_send_flowctl_per_write(grpc_exec_ctx *exec_ctx,
+                                                 int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_executor_closures_per_wakeup(grpc_exec_ctx *exec_ctx,
+                                                 int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 1024);
+  if (value < 13) {
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4637863191261478912ull) {
+    int bucket =
+        grpc_stats_table_7[((_val.uint - 4623507967449235456ull) >> 48)] + 13;
+    _bkt.dbl = grpc_stats_table_6[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM(
+        (exec_ctx), GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                           GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_6, 64));
+}
+void grpc_stats_inc_server_cqs_checked(grpc_exec_ctx *exec_ctx, int value) {
+  /* Automatically generated by tools/codegen/core/gen_stats_data.py */
+  value = GPR_CLAMP(value, 0, 64);
+  if (value < 3) {
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED, value);
+    return;
+  }
+  union {
+    double dbl;
+    uint64_t uint;
+  } _val, _bkt;
+  _val.dbl = value;
+  if (_val.uint < 4625196817309499392ull) {
+    int bucket =
+        grpc_stats_table_9[((_val.uint - 4613937818241073152ull) >> 51)] + 3;
+    _bkt.dbl = grpc_stats_table_8[bucket];
+    bucket -= (_val.uint < _bkt.uint);
+    GRPC_STATS_INC_HISTOGRAM((exec_ctx),
+                             GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED, bucket);
+    return;
+  }
+  GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED,
+                           grpc_stats_histo_find_bucket_slow(
+                               (exec_ctx), value, grpc_stats_table_8, 8));
+}
+const int grpc_stats_histo_buckets[14] = {64, 128, 64, 64, 64, 64, 64,
+                                          64, 64,  64, 64, 64, 64, 8};
+const int grpc_stats_histo_start[14] = {0,   64,  192, 256, 320, 384, 448,
+                                        512, 576, 640, 704, 768, 832, 896};
+const int *const grpc_stats_histo_bucket_boundaries[14] = {
+    grpc_stats_table_0, grpc_stats_table_2, grpc_stats_table_4,
+    grpc_stats_table_6, grpc_stats_table_4, grpc_stats_table_4,
+    grpc_stats_table_6, grpc_stats_table_4, grpc_stats_table_6,
+    grpc_stats_table_6, grpc_stats_table_6, grpc_stats_table_6,
+    grpc_stats_table_6, grpc_stats_table_8};
+void (*const grpc_stats_inc_histogram[14])(grpc_exec_ctx *exec_ctx, int x) = {
+    grpc_stats_inc_call_initial_size,
+    grpc_stats_inc_poll_events_returned,
+    grpc_stats_inc_tcp_write_size,
+    grpc_stats_inc_tcp_write_iov_size,
+    grpc_stats_inc_tcp_read_size,
+    grpc_stats_inc_tcp_read_offer,
+    grpc_stats_inc_tcp_read_offer_iov_size,
+    grpc_stats_inc_http2_send_message_size,
+    grpc_stats_inc_http2_send_initial_metadata_per_write,
+    grpc_stats_inc_http2_send_message_per_write,
+    grpc_stats_inc_http2_send_trailing_metadata_per_write,
+    grpc_stats_inc_http2_send_flowctl_per_write,
+    grpc_stats_inc_executor_closures_per_wakeup,
+    grpc_stats_inc_server_cqs_checked};
diff --git a/src/core/lib/debug/stats_data.h b/src/core/lib/debug/stats_data.h
new file mode 100644
index 0000000000..6c0ad30543
--- /dev/null
+++ b/src/core/lib/debug/stats_data.h
@@ -0,0 +1,484 @@
+/*
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Automatically generated by tools/codegen/core/gen_stats_data.py
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+#define GRPC_CORE_LIB_DEBUG_STATS_DATA_H
+
+#include <inttypes.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+typedef enum {
+  GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CALLS_CREATED,
+  GRPC_STATS_COUNTER_CQS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED,
+  GRPC_STATS_COUNTER_SYSCALL_POLL,
+  GRPC_STATS_COUNTER_SYSCALL_WAIT,
+  GRPC_STATS_COUNTER_POLLSET_KICK,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER,
+  GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD,
+  GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV,
+  GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD,
+  GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS,
+  GRPC_STATS_COUNTER_SYSCALL_WRITE,
+  GRPC_STATS_COUNTER_SYSCALL_READ,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED,
+  GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS,
+  GRPC_STATS_COUNTER_HTTP2_OP_BATCHES,
+  GRPC_STATS_COUNTER_HTTP2_OP_CANCEL,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_PINGS_SENT,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED,
+  GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED,
+  GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE,
+  GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM,
+  GRPC_STATS_COUNTER_HPACK_RECV_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY,
+  GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64,
+  GRPC_STATS_COUNTER_HPACK_SEND_INDEXED,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX,
+  GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V,
+  GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED,
+  GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY,
+  GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS,
+  GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS,
+  GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF,
+  GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED,
+  GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED,
+  GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES,
+  GRPC_STATS_COUNTER_EXECUTOR_THREADS_CREATED,
+  GRPC_STATS_COUNTER_EXECUTOR_THREADS_USED,
+  GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS,
+  GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED,
+  GRPC_STATS_COUNTER_COUNT
+} grpc_stats_counters;
+extern const char *grpc_stats_counter_name[GRPC_STATS_COUNTER_COUNT];
+extern const char *grpc_stats_counter_doc[GRPC_STATS_COUNTER_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE,
+  GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED,
+  GRPC_STATS_HISTOGRAM_COUNT
+} grpc_stats_histograms;
+extern const char *grpc_stats_histogram_name[GRPC_STATS_HISTOGRAM_COUNT];
+extern const char *grpc_stats_histogram_doc[GRPC_STATS_HISTOGRAM_COUNT];
+typedef enum {
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_FIRST_SLOT = 0,
+  GRPC_STATS_HISTOGRAM_CALL_INITIAL_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_FIRST_SLOT = 64,
+  GRPC_STATS_HISTOGRAM_POLL_EVENTS_RETURNED_BUCKETS = 128,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_FIRST_SLOT = 192,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_FIRST_SLOT = 256,
+  GRPC_STATS_HISTOGRAM_TCP_WRITE_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_FIRST_SLOT = 320,
+  GRPC_STATS_HISTOGRAM_TCP_READ_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_FIRST_SLOT = 384,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_FIRST_SLOT = 448,
+  GRPC_STATS_HISTOGRAM_TCP_READ_OFFER_IOV_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_FIRST_SLOT = 512,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_SIZE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_FIRST_SLOT = 576,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_INITIAL_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_FIRST_SLOT = 640,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_MESSAGE_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_FIRST_SLOT = 704,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_TRAILING_METADATA_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_FIRST_SLOT = 768,
+  GRPC_STATS_HISTOGRAM_HTTP2_SEND_FLOWCTL_PER_WRITE_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP_FIRST_SLOT = 832,
+  GRPC_STATS_HISTOGRAM_EXECUTOR_CLOSURES_PER_WAKEUP_BUCKETS = 64,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_FIRST_SLOT = 896,
+  GRPC_STATS_HISTOGRAM_SERVER_CQS_CHECKED_BUCKETS = 8,
+  GRPC_STATS_HISTOGRAM_BUCKETS = 904
+} grpc_stats_histogram_constants;
+#define GRPC_STATS_INC_CLIENT_CALLS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED)
+#define GRPC_STATS_INC_SERVER_CALLS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SERVER_CALLS_CREATED)
+#define GRPC_STATS_INC_CQS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_CQS_CREATED)
+#define GRPC_STATS_INC_CLIENT_CHANNELS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_CLIENT_CHANNELS_CREATED)
+#define GRPC_STATS_INC_CLIENT_SUBCHANNELS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_CLIENT_SUBCHANNELS_CREATED)
+#define GRPC_STATS_INC_SERVER_CHANNELS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SERVER_CHANNELS_CREATED)
+#define GRPC_STATS_INC_SYSCALL_POLL(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SYSCALL_POLL)
+#define GRPC_STATS_INC_SYSCALL_WAIT(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SYSCALL_WAIT)
+#define GRPC_STATS_INC_POLLSET_KICK(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_POLLSET_KICK)
+#define GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                           \
+                         GRPC_STATS_COUNTER_POLLSET_KICKED_WITHOUT_POLLER)
+#define GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_POLLSET_KICKED_AGAIN)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_FD)
+#define GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_POLLSET_KICK_WAKEUP_CV)
+#define GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_POLLSET_KICK_OWN_THREAD)
+#define GRPC_STATS_INC_HISTOGRAM_SLOW_LOOKUPS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HISTOGRAM_SLOW_LOOKUPS)
+#define GRPC_STATS_INC_SYSCALL_WRITE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SYSCALL_WRITE)
+#define GRPC_STATS_INC_SYSCALL_READ(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SYSCALL_READ)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_TCP_BACKUP_POLLERS_CREATED)
+#define GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_TCP_BACKUP_POLLER_POLLS)
+#define GRPC_STATS_INC_HTTP2_OP_BATCHES(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_OP_BATCHES)
+#define GRPC_STATS_INC_HTTP2_OP_CANCEL(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_OP_CANCEL)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_INITIAL_METADATA(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                            \
+                         GRPC_STATS_COUNTER_HTTP2_OP_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_MESSAGE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_OP_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_SEND_TRAILING_METADATA(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                             \
+                         GRPC_STATS_COUNTER_HTTP2_OP_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_INITIAL_METADATA(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                            \
+                         GRPC_STATS_COUNTER_HTTP2_OP_RECV_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_MESSAGE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_OP_RECV_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_OP_RECV_TRAILING_METADATA(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                             \
+                         GRPC_STATS_COUNTER_HTTP2_OP_RECV_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_SETTINGS_WRITES(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_SETTINGS_WRITES)
+#define GRPC_STATS_INC_HTTP2_PINGS_SENT(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_PINGS_SENT)
+#define GRPC_STATS_INC_HTTP2_WRITES_BEGUN(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_WRITES_BEGUN)
+#define GRPC_STATS_INC_HTTP2_WRITES_OFFLOADED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_WRITES_OFFLOADED)
+#define GRPC_STATS_INC_HTTP2_WRITES_CONTINUED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_WRITES_CONTINUED)
+#define GRPC_STATS_INC_HTTP2_PARTIAL_WRITES(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HTTP2_PARTIAL_WRITES)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      (exec_ctx),                                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_INITIAL_WRITE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                     \
+      (exec_ctx),                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_START_NEW_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                 \
+      (exec_ctx), GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_MESSAGE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA( \
+    exec_ctx)                                                             \
+  GRPC_STATS_INC_COUNTER(                                                 \
+      (exec_ctx),                                                         \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_INITIAL_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA( \
+    exec_ctx)                                                              \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      (exec_ctx),                                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_TRAILING_METADATA)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                    \
+      (exec_ctx),                                                            \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RETRY_SEND_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      (exec_ctx),                                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CONTINUE_PINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                \
+      (exec_ctx), GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_GOAWAY_SENT)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                               \
+      (exec_ctx), GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_RST_STREAM)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      (exec_ctx),                                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_CLOSE_FROM_API)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL( \
+    exec_ctx)                                                           \
+  GRPC_STATS_INC_COUNTER(                                               \
+      (exec_ctx),                                                       \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_STREAM_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL( \
+    exec_ctx)                                                              \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      (exec_ctx),                                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      (exec_ctx),                                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_SEND_SETTINGS)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING( \
+    exec_ctx)                                                          \
+  GRPC_STATS_INC_COUNTER(                                              \
+      (exec_ctx),                                                      \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_BDP_ESTIMATOR_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING( \
+    exec_ctx)                                                                         \
+  GRPC_STATS_INC_COUNTER(                                                             \
+      (exec_ctx),                                                                     \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_SETTING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE( \
+    exec_ctx)                                                                        \
+  GRPC_STATS_INC_COUNTER(                                                            \
+      (exec_ctx),                                                                    \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FLOW_CONTROL_UNSTALLED_BY_UPDATE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                     \
+      (exec_ctx),                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_APPLICATION_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                   \
+      (exec_ctx),                                                           \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_KEEPALIVE_PING)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED( \
+    exec_ctx)                                                                        \
+  GRPC_STATS_INC_COUNTER(                                                            \
+      (exec_ctx),                                                                    \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_TRANSPORT_FLOW_CONTROL_UNSTALLED)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                  \
+      (exec_ctx),                                                          \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_PING_RESPONSE)
+#define GRPC_STATS_INC_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                                     \
+      (exec_ctx),                                                             \
+      GRPC_STATS_COUNTER_HTTP2_INITIATE_WRITE_DUE_TO_FORCE_RST_STREAM)
+#define GRPC_STATS_INC_HPACK_RECV_INDEXED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_RECV_INDEXED)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_RECV_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_RECV_UNCOMPRESSED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_RECV_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_RECV_HUFFMAN(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_RECV_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_RECV_BINARY)
+#define GRPC_STATS_INC_HPACK_RECV_BINARY_BASE64(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_RECV_BINARY_BASE64)
+#define GRPC_STATS_INC_HPACK_SEND_INDEXED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_SEND_INDEXED)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_INCIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_INCIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NOTIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NOTIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX)
+#define GRPC_STATS_INC_HPACK_SEND_LITHDR_NVRIDX_V(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_HPACK_SEND_LITHDR_NVRIDX_V)
+#define GRPC_STATS_INC_HPACK_SEND_UNCOMPRESSED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_SEND_UNCOMPRESSED)
+#define GRPC_STATS_INC_HPACK_SEND_HUFFMAN(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_SEND_HUFFMAN)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_HPACK_SEND_BINARY)
+#define GRPC_STATS_INC_HPACK_SEND_BINARY_BASE64(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_HPACK_SEND_BINARY_BASE64)
+#define GRPC_STATS_INC_COMBINER_LOCKS_INITIATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_COMBINER_LOCKS_INITIATED)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                            \
+                         GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER(                                             \
+      (exec_ctx), GRPC_STATS_COUNTER_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS)
+#define GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_COMBINER_LOCKS_OFFLOADED)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                            \
+                         GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_SHORT_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                           \
+                         GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_LONG_ITEMS)
+#define GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                        \
+                         GRPC_STATS_COUNTER_EXECUTOR_SCHEDULED_TO_SELF)
+#define GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                       \
+                         GRPC_STATS_COUNTER_EXECUTOR_WAKEUP_INITIATED)
+#define GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_EXECUTOR_QUEUE_DRAINED)
+#define GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_EXECUTOR_PUSH_RETRIES)
+#define GRPC_STATS_INC_EXECUTOR_THREADS_CREATED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                      \
+                         GRPC_STATS_COUNTER_EXECUTOR_THREADS_CREATED)
+#define GRPC_STATS_INC_EXECUTOR_THREADS_USED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_EXECUTOR_THREADS_USED)
+#define GRPC_STATS_INC_SERVER_REQUESTED_CALLS(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_SERVER_REQUESTED_CALLS)
+#define GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED(exec_ctx) \
+  GRPC_STATS_INC_COUNTER((exec_ctx),                             \
+                         GRPC_STATS_COUNTER_SERVER_SLOWPATH_REQUESTS_QUEUED)
+#define GRPC_STATS_INC_CALL_INITIAL_SIZE(exec_ctx, value) \
+  grpc_stats_inc_call_initial_size((exec_ctx), (int)(value))
+void grpc_stats_inc_call_initial_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_POLL_EVENTS_RETURNED(exec_ctx, value) \
+  grpc_stats_inc_poll_events_returned((exec_ctx), (int)(value))
+void grpc_stats_inc_poll_events_returned(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_TCP_WRITE_SIZE(exec_ctx, value) \
+  grpc_stats_inc_tcp_write_size((exec_ctx), (int)(value))
+void grpc_stats_inc_tcp_write_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(exec_ctx, value) \
+  grpc_stats_inc_tcp_write_iov_size((exec_ctx), (int)(value))
+void grpc_stats_inc_tcp_write_iov_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_TCP_READ_SIZE(exec_ctx, value) \
+  grpc_stats_inc_tcp_read_size((exec_ctx), (int)(value))
+void grpc_stats_inc_tcp_read_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER(exec_ctx, value) \
+  grpc_stats_inc_tcp_read_offer((exec_ctx), (int)(value))
+void grpc_stats_inc_tcp_read_offer(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(exec_ctx, value) \
+  grpc_stats_inc_tcp_read_offer_iov_size((exec_ctx), (int)(value))
+void grpc_stats_inc_tcp_read_offer_iov_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_SIZE(exec_ctx, value) \
+  grpc_stats_inc_http2_send_message_size((exec_ctx), (int)(value))
+void grpc_stats_inc_http2_send_message_size(grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_HTTP2_SEND_INITIAL_METADATA_PER_WRITE(exec_ctx, value) \
+  grpc_stats_inc_http2_send_initial_metadata_per_write((exec_ctx), (int)(value))
+void grpc_stats_inc_http2_send_initial_metadata_per_write(
+    grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_HTTP2_SEND_MESSAGE_PER_WRITE(exec_ctx, value) \
+  grpc_stats_inc_http2_send_message_per_write((exec_ctx), (int)(value))
+void grpc_stats_inc_http2_send_message_per_write(grpc_exec_ctx *exec_ctx,
+                                                 int x);
+#define GRPC_STATS_INC_HTTP2_SEND_TRAILING_METADATA_PER_WRITE(exec_ctx, value) \
+  grpc_stats_inc_http2_send_trailing_metadata_per_write((exec_ctx),            \
+                                                        (int)(value))
+void grpc_stats_inc_http2_send_trailing_metadata_per_write(
+    grpc_exec_ctx *exec_ctx, int x);
+#define GRPC_STATS_INC_HTTP2_SEND_FLOWCTL_PER_WRITE(exec_ctx, value) \
+  grpc_stats_inc_http2_send_flowctl_per_write((exec_ctx), (int)(value))
+void grpc_stats_inc_http2_send_flowctl_per_write(grpc_exec_ctx *exec_ctx,
+                                                 int x);
+#define GRPC_STATS_INC_EXECUTOR_CLOSURES_PER_WAKEUP(exec_ctx, value) \
+  grpc_stats_inc_executor_closures_per_wakeup((exec_ctx), (int)(value))
+void grpc_stats_inc_executor_closures_per_wakeup(grpc_exec_ctx *exec_ctx,
+                                                 int x);
+#define GRPC_STATS_INC_SERVER_CQS_CHECKED(exec_ctx, value) \
+  grpc_stats_inc_server_cqs_checked((exec_ctx), (int)(value))
+void grpc_stats_inc_server_cqs_checked(grpc_exec_ctx *exec_ctx, int x);
+extern const int grpc_stats_histo_buckets[14];
+extern const int grpc_stats_histo_start[14];
+extern const int *const grpc_stats_histo_bucket_boundaries[14];
+extern void (*const grpc_stats_inc_histogram[14])(grpc_exec_ctx *exec_ctx,
+                                                  int x);
+
+#endif /* GRPC_CORE_LIB_DEBUG_STATS_DATA_H */
diff --git a/src/core/lib/debug/stats_data.yaml b/src/core/lib/debug/stats_data.yaml
new file mode 100644
index 0000000000..de575f01c7
--- /dev/null
+++ b/src/core/lib/debug/stats_data.yaml
@@ -0,0 +1,280 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Stats data declaration
+# use tools / codegen / core / gen_stats_data.py to turn this into stats_data.h
+
+# overall
+- counter: client_calls_created
+  doc: Number of client side calls created by this process
+- counter: server_calls_created
+  doc: Number of server side calls created by this process
+- histogram: call_initial_size
+  max: 262144
+  buckets: 64
+  doc: Initial size of the grpc_call arena created at call start
+- counter: cqs_created
+  doc: Number of completion queues created
+- counter: client_channels_created
+  doc: Number of client channels created
+- counter: client_subchannels_created
+  doc: Number of client subchannels created
+- counter: server_channels_created
+  doc: Number of server channels created
+# polling
+- counter: syscall_poll
+  doc: Number of polling syscalls (epoll_wait, poll, etc) made by this process
+- counter: syscall_wait
+  doc: Number of sleeping syscalls made by this process
+- histogram: poll_events_returned
+  max: 1024
+  buckets: 128
+  doc: How many events are called for each syscall_poll
+- counter: pollset_kick
+  doc: How many polling wakeups were performed by the process
+       (only valid for epoll1 right now)
+- counter: pollset_kicked_without_poller
+  doc: How many times was a polling wakeup requested without an active poller
+       (only valid for epoll1 right now)
+- counter: pollset_kicked_again
+  doc: How many times was the same polling worker awoken repeatedly before
+       waking up
+       (only valid for epoll1 right now)
+- counter: pollset_kick_wakeup_fd
+  doc: How many times was an eventfd used as the wakeup vector for a polling
+       wakeup
+       (only valid for epoll1 right now)
+- counter: pollset_kick_wakeup_cv
+  doc: How many times was a condition variable used as the wakeup vector for a
+       polling wakeup
+       (only valid for epoll1 right now)
+- counter: pollset_kick_own_thread
+  doc: How many times could a polling wakeup be satisfied by keeping the waking
+       thread awake?
+       (only valid for epoll1 right now)
+# stats system
+- counter: histogram_slow_lookups
+  doc: Number of times histogram increments went through the slow
+       (binary search) path
+# tcp
+- counter: syscall_write
+  doc: Number of write syscalls (or equivalent - eg sendmsg) made by this process
+- counter: syscall_read
+  doc: Number of read syscalls (or equivalent - eg recvmsg) made by this process
+- histogram: tcp_write_size
+  max: 16777216 # 16 meg max write tracked
+  buckets: 64
+  doc: Number of bytes offered to each syscall_write
+- histogram: tcp_write_iov_size
+  max: 1024
+  buckets: 64
+  doc: Number of byte segments offered to each syscall_write
+- histogram: tcp_read_size
+  max: 16777216
+  buckets: 64
+  doc: Number of bytes received by each syscall_read
+- histogram: tcp_read_offer
+  max: 16777216
+  buckets: 64
+  doc: Number of bytes offered to each syscall_read
+- histogram: tcp_read_offer_iov_size
+  max: 1024
+  buckets: 64
+  doc: Number of byte segments offered to each syscall_read
+- counter: tcp_backup_pollers_created
+  doc: Number of times a backup poller has been created (this can be expensive)
+- counter: tcp_backup_poller_polls
+  doc: Number of polls performed on the backup poller
+# chttp2
+- counter: http2_op_batches
+  doc: Number of batches received by HTTP2 transport
+- counter: http2_op_cancel
+  doc: Number of cancelations received by HTTP2 transport
+- counter: http2_op_send_initial_metadata
+  doc: Number of batches containing send initial metadata
+- counter: http2_op_send_message
+  doc: Number of batches containing send message
+- counter: http2_op_send_trailing_metadata
+  doc: Number of batches containing send trailing metadata
+- counter: http2_op_recv_initial_metadata
+  doc: Number of batches containing receive initial metadata
+- counter: http2_op_recv_message
+  doc: Number of batches containing receive message
+- counter: http2_op_recv_trailing_metadata
+  doc: Number of batches containing receive trailing metadata
+- histogram: http2_send_message_size
+  max: 16777216
+  buckets: 64
+  doc: Size of messages received by HTTP2 transport
+- histogram: http2_send_initial_metadata_per_write
+  max: 1024
+  buckets: 64
+  doc: Number of streams initiated written per TCP write
+- histogram: http2_send_message_per_write
+  max: 1024
+  buckets: 64
+  doc: Number of streams whose payload was written per TCP write
+- histogram: http2_send_trailing_metadata_per_write
+  max: 1024
+  buckets: 64
+  doc: Number of streams terminated per TCP write
+- histogram: http2_send_flowctl_per_write
+  max: 1024
+  buckets: 64
+  doc: Number of flow control updates written per TCP write
+- counter: http2_settings_writes
+  doc: Number of settings frames sent
+- counter: http2_pings_sent
+  doc: Number of HTTP2 pings sent by process
+- counter: http2_writes_begun
+  doc: Number of HTTP2 writes initiated
+- counter: http2_writes_offloaded
+  doc: Number of HTTP2 writes offloaded to the executor from application threads
+- counter: http2_writes_continued
+  doc: Number of HTTP2 writes that finished seeing more data needed to be
+       written
+- counter: http2_partial_writes
+  doc: Number of HTTP2 writes that were made knowing there was still more data
+       to be written (we cap maximum write size to syscall_write)
+- counter: http2_initiate_write_due_to_initial_write
+  doc: Number of HTTP2 writes initiated due to 'initial_write'
+- counter: http2_initiate_write_due_to_start_new_stream
+  doc: Number of HTTP2 writes initiated due to 'start_new_stream'
+- counter: http2_initiate_write_due_to_send_message
+  doc: Number of HTTP2 writes initiated due to 'send_message'
+- counter: http2_initiate_write_due_to_send_initial_metadata
+  doc: Number of HTTP2 writes initiated due to 'send_initial_metadata'
+- counter: http2_initiate_write_due_to_send_trailing_metadata
+  doc: Number of HTTP2 writes initiated due to 'send_trailing_metadata'
+- counter: http2_initiate_write_due_to_retry_send_ping
+  doc: Number of HTTP2 writes initiated due to 'retry_send_ping'
+- counter: http2_initiate_write_due_to_continue_pings
+  doc: Number of HTTP2 writes initiated due to 'continue_pings'
+- counter: http2_initiate_write_due_to_goaway_sent
+  doc: Number of HTTP2 writes initiated due to 'goaway_sent'
+- counter: http2_initiate_write_due_to_rst_stream
+  doc: Number of HTTP2 writes initiated due to 'rst_stream'
+- counter: http2_initiate_write_due_to_close_from_api
+  doc: Number of HTTP2 writes initiated due to 'close_from_api'
+- counter: http2_initiate_write_due_to_stream_flow_control
+  doc: Number of HTTP2 writes initiated due to 'stream_flow_control'
+- counter: http2_initiate_write_due_to_transport_flow_control
+  doc: Number of HTTP2 writes initiated due to 'transport_flow_control'
+- counter: http2_initiate_write_due_to_send_settings
+  doc: Number of HTTP2 writes initiated due to 'send_settings'
+- counter: http2_initiate_write_due_to_bdp_estimator_ping
+  doc: Number of HTTP2 writes initiated due to 'bdp_estimator_ping'
+- counter: http2_initiate_write_due_to_flow_control_unstalled_by_setting
+  doc: Number of HTTP2 writes initiated due to 'flow_control_unstalled_by_setting'
+- counter: http2_initiate_write_due_to_flow_control_unstalled_by_update
+  doc: Number of HTTP2 writes initiated due to 'flow_control_unstalled_by_update'
+- counter: http2_initiate_write_due_to_application_ping
+  doc: Number of HTTP2 writes initiated due to 'application_ping'
+- counter: http2_initiate_write_due_to_keepalive_ping
+  doc: Number of HTTP2 writes initiated due to 'keepalive_ping'
+- counter: http2_initiate_write_due_to_transport_flow_control_unstalled
+  doc: Number of HTTP2 writes initiated due to 'transport_flow_control_unstalled'
+- counter: http2_initiate_write_due_to_ping_response
+  doc: Number of HTTP2 writes initiated due to 'ping_response'
+- counter: http2_initiate_write_due_to_force_rst_stream
+  doc: Number of HTTP2 writes initiated due to 'force_rst_stream'
+- counter: hpack_recv_indexed
+  doc: Number of HPACK indexed fields received
+- counter: hpack_recv_lithdr_incidx
+  doc: Number of HPACK literal headers received with incremental indexing
+- counter: hpack_recv_lithdr_incidx_v
+  doc: Number of HPACK literal headers received with incremental indexing and literal keys
+- counter: hpack_recv_lithdr_notidx
+  doc: Number of HPACK literal headers received with no indexing
+- counter: hpack_recv_lithdr_notidx_v
+  doc: Number of HPACK literal headers received with no indexing and literal keys
+- counter: hpack_recv_lithdr_nvridx
+  doc: Number of HPACK literal headers received with never-indexing
+- counter: hpack_recv_lithdr_nvridx_v
+  doc: Number of HPACK literal headers received with never-indexing and literal keys
+- counter: hpack_recv_uncompressed
+  doc: Number of uncompressed strings received in metadata
+- counter: hpack_recv_huffman
+  doc: Number of huffman encoded strings received in metadata
+- counter: hpack_recv_binary
+  doc: Number of binary strings received in metadata
+- counter: hpack_recv_binary_base64
+  doc: Number of binary strings received encoded in base64 in metadata
+- counter: hpack_send_indexed
+  doc: Number of HPACK indexed fields sent
+- counter: hpack_send_lithdr_incidx
+  doc: Number of HPACK literal headers sent with incremental indexing
+- counter: hpack_send_lithdr_incidx_v
+  doc: Number of HPACK literal headers sent with incremental indexing and literal keys
+- counter: hpack_send_lithdr_notidx
+  doc: Number of HPACK literal headers sent with no indexing
+- counter: hpack_send_lithdr_notidx_v
+  doc: Number of HPACK literal headers sent with no indexing and literal keys
+- counter: hpack_send_lithdr_nvridx
+  doc: Number of HPACK literal headers sent with never-indexing
+- counter: hpack_send_lithdr_nvridx_v
+  doc: Number of HPACK literal headers sent with never-indexing and literal keys
+- counter: hpack_send_uncompressed
+  doc: Number of uncompressed strings sent in metadata
+- counter: hpack_send_huffman
+  doc: Number of huffman encoded strings sent in metadata
+- counter: hpack_send_binary
+  doc: Number of binary strings received in metadata
+- counter: hpack_send_binary_base64
+  doc: Number of binary strings received encoded in base64 in metadata
+# combiner locks
+- counter: combiner_locks_initiated
+  doc: Number of combiner lock entries by process
+       (first items queued to a combiner)
+- counter: combiner_locks_scheduled_items
+  doc: Number of items scheduled against combiner locks
+- counter: combiner_locks_scheduled_final_items
+  doc: Number of final items scheduled against combiner locks
+- counter: combiner_locks_offloaded
+  doc: Number of combiner locks offloaded to different threads
+# executor
+- counter: executor_scheduled_short_items
+  doc: Number of finite runtime closures scheduled against the executor
+       (gRPC thread pool)
+- counter: executor_scheduled_long_items
+  doc: Number of potentially infinite runtime closures scheduled against the
+       executor (gRPC thread pool)
+- counter: executor_scheduled_to_self
+  doc: Number of closures scheduled by the executor to the executor
+- counter: executor_wakeup_initiated
+  doc: Number of thread wakeups initiated within the executor
+- counter: executor_queue_drained
+  doc: Number of times an executor queue was drained
+- counter: executor_push_retries
+  doc: Number of times we raced and were forced to retry pushing a closure to
+       the executor
+- counter: executor_threads_created
+  doc: Size of the backing thread pool for overflow gRPC Core work
+- counter: executor_threads_used
+  doc: How many executor threads actually got used
+- histogram: executor_closures_per_wakeup
+  max: 1024
+  buckets: 64
+  doc: Number of closures executed each time an executor wakes up
+# server
+- counter: server_requested_calls
+  doc: How many calls were requested (not necessarily received) by the server
+- histogram: server_cqs_checked
+  buckets: 8
+  max: 64
+  doc: How many completion queues were checked looking for a CQ that had
+       requested the incoming call
+- counter: server_slowpath_requests_queued
+  doc: How many times was the server slow path taken (indicates too few
+       outstanding requests)
diff --git a/src/core/lib/debug/stats_data_bq_schema.sql b/src/core/lib/debug/stats_data_bq_schema.sql
new file mode 100644
index 0000000000..0611ccaff0
--- /dev/null
+++ b/src/core/lib/debug/stats_data_bq_schema.sql
@@ -0,0 +1,90 @@
+client_calls_created_per_iteration:FLOAT,
+server_calls_created_per_iteration:FLOAT,
+cqs_created_per_iteration:FLOAT,
+client_channels_created_per_iteration:FLOAT,
+client_subchannels_created_per_iteration:FLOAT,
+server_channels_created_per_iteration:FLOAT,
+syscall_poll_per_iteration:FLOAT,
+syscall_wait_per_iteration:FLOAT,
+pollset_kick_per_iteration:FLOAT,
+pollset_kicked_without_poller_per_iteration:FLOAT,
+pollset_kicked_again_per_iteration:FLOAT,
+pollset_kick_wakeup_fd_per_iteration:FLOAT,
+pollset_kick_wakeup_cv_per_iteration:FLOAT,
+pollset_kick_own_thread_per_iteration:FLOAT,
+histogram_slow_lookups_per_iteration:FLOAT,
+syscall_write_per_iteration:FLOAT,
+syscall_read_per_iteration:FLOAT,
+tcp_backup_pollers_created_per_iteration:FLOAT,
+tcp_backup_poller_polls_per_iteration:FLOAT,
+http2_op_batches_per_iteration:FLOAT,
+http2_op_cancel_per_iteration:FLOAT,
+http2_op_send_initial_metadata_per_iteration:FLOAT,
+http2_op_send_message_per_iteration:FLOAT,
+http2_op_send_trailing_metadata_per_iteration:FLOAT,
+http2_op_recv_initial_metadata_per_iteration:FLOAT,
+http2_op_recv_message_per_iteration:FLOAT,
+http2_op_recv_trailing_metadata_per_iteration:FLOAT,
+http2_settings_writes_per_iteration:FLOAT,
+http2_pings_sent_per_iteration:FLOAT,
+http2_writes_begun_per_iteration:FLOAT,
+http2_writes_offloaded_per_iteration:FLOAT,
+http2_writes_continued_per_iteration:FLOAT,
+http2_partial_writes_per_iteration:FLOAT,
+http2_initiate_write_due_to_initial_write_per_iteration:FLOAT,
+http2_initiate_write_due_to_start_new_stream_per_iteration:FLOAT,
+http2_initiate_write_due_to_send_message_per_iteration:FLOAT,
+http2_initiate_write_due_to_send_initial_metadata_per_iteration:FLOAT,
+http2_initiate_write_due_to_send_trailing_metadata_per_iteration:FLOAT,
+http2_initiate_write_due_to_retry_send_ping_per_iteration:FLOAT,
+http2_initiate_write_due_to_continue_pings_per_iteration:FLOAT,
+http2_initiate_write_due_to_goaway_sent_per_iteration:FLOAT,
+http2_initiate_write_due_to_rst_stream_per_iteration:FLOAT,
+http2_initiate_write_due_to_close_from_api_per_iteration:FLOAT,
+http2_initiate_write_due_to_stream_flow_control_per_iteration:FLOAT,
+http2_initiate_write_due_to_transport_flow_control_per_iteration:FLOAT,
+http2_initiate_write_due_to_send_settings_per_iteration:FLOAT,
+http2_initiate_write_due_to_bdp_estimator_ping_per_iteration:FLOAT,
+http2_initiate_write_due_to_flow_control_unstalled_by_setting_per_iteration:FLOAT,
+http2_initiate_write_due_to_flow_control_unstalled_by_update_per_iteration:FLOAT,
+http2_initiate_write_due_to_application_ping_per_iteration:FLOAT,
+http2_initiate_write_due_to_keepalive_ping_per_iteration:FLOAT,
+http2_initiate_write_due_to_transport_flow_control_unstalled_per_iteration:FLOAT,
+http2_initiate_write_due_to_ping_response_per_iteration:FLOAT,
+http2_initiate_write_due_to_force_rst_stream_per_iteration:FLOAT,
+hpack_recv_indexed_per_iteration:FLOAT,
+hpack_recv_lithdr_incidx_per_iteration:FLOAT,
+hpack_recv_lithdr_incidx_v_per_iteration:FLOAT,
+hpack_recv_lithdr_notidx_per_iteration:FLOAT,
+hpack_recv_lithdr_notidx_v_per_iteration:FLOAT,
+hpack_recv_lithdr_nvridx_per_iteration:FLOAT,
+hpack_recv_lithdr_nvridx_v_per_iteration:FLOAT,
+hpack_recv_uncompressed_per_iteration:FLOAT,
+hpack_recv_huffman_per_iteration:FLOAT,
+hpack_recv_binary_per_iteration:FLOAT,
+hpack_recv_binary_base64_per_iteration:FLOAT,
+hpack_send_indexed_per_iteration:FLOAT,
+hpack_send_lithdr_incidx_per_iteration:FLOAT,
+hpack_send_lithdr_incidx_v_per_iteration:FLOAT,
+hpack_send_lithdr_notidx_per_iteration:FLOAT,
+hpack_send_lithdr_notidx_v_per_iteration:FLOAT,
+hpack_send_lithdr_nvridx_per_iteration:FLOAT,
+hpack_send_lithdr_nvridx_v_per_iteration:FLOAT,
+hpack_send_uncompressed_per_iteration:FLOAT,
+hpack_send_huffman_per_iteration:FLOAT,
+hpack_send_binary_per_iteration:FLOAT,
+hpack_send_binary_base64_per_iteration:FLOAT,
+combiner_locks_initiated_per_iteration:FLOAT,
+combiner_locks_scheduled_items_per_iteration:FLOAT,
+combiner_locks_scheduled_final_items_per_iteration:FLOAT,
+combiner_locks_offloaded_per_iteration:FLOAT,
+executor_scheduled_short_items_per_iteration:FLOAT,
+executor_scheduled_long_items_per_iteration:FLOAT,
+executor_scheduled_to_self_per_iteration:FLOAT,
+executor_wakeup_initiated_per_iteration:FLOAT,
+executor_queue_drained_per_iteration:FLOAT,
+executor_push_retries_per_iteration:FLOAT,
+executor_threads_created_per_iteration:FLOAT,
+executor_threads_used_per_iteration:FLOAT,
+server_requested_calls_per_iteration:FLOAT,
+server_slowpath_requests_queued_per_iteration:FLOAT
diff --git a/src/core/lib/debug/trace.c b/src/core/lib/debug/trace.c
index c6c1853e20..7cb2789a19 100644
--- a/src/core/lib/debug/trace.c
+++ b/src/core/lib/debug/trace.c
@@ -39,7 +39,7 @@ static tracer *tracers;
 #endif
 
 void grpc_register_tracer(grpc_tracer_flag *flag) {
-  tracer *t = gpr_malloc(sizeof(*t));
+  tracer *t = (tracer *)gpr_malloc(sizeof(*t));
   t->flag = flag;
   t->next = tracers;
   TRACER_SET(*flag, false);
@@ -53,10 +53,10 @@ static void add(const char *beg, const char *end, char ***ss, size_t *ns) {
   size_t len;
   GPR_ASSERT(end >= beg);
   len = (size_t)(end - beg);
-  s = gpr_malloc(len + 1);
+  s = (char *)gpr_malloc(len + 1);
   memcpy(s, beg, len);
   s[len] = 0;
-  *ss = gpr_realloc(*ss, sizeof(char **) * np);
+  *ss = (char **)gpr_realloc(*ss, sizeof(char **) * np);
   (*ss)[n] = s;
   *ns = np;
 }
diff --git a/src/core/lib/debug/trace.h b/src/core/lib/debug/trace.h
index dd9e6a30fe..64f2e3fc33 100644
--- a/src/core/lib/debug/trace.h
+++ b/src/core/lib/debug/trace.h
@@ -35,7 +35,7 @@ typedef struct {
 #else
   bool value;
 #endif
-  char *name;
+  const char *name;
 } grpc_tracer_flag;
 
 #ifdef GRPC_THREADSAFE_TRACER
diff --git a/src/core/lib/http/format_request.c b/src/core/lib/http/format_request.c
index f887726eea..88fb0ab0b6 100644
--- a/src/core/lib/http/format_request.c
+++ b/src/core/lib/http/format_request.c
@@ -98,7 +98,7 @@ grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
   gpr_strvec_destroy(&out);
 
   if (body_bytes) {
-    tmp = gpr_realloc(tmp, out_len + body_size);
+    tmp = (char *)gpr_realloc(tmp, out_len + body_size);
     memcpy(tmp + out_len, body_bytes, body_size);
     out_len += body_size;
   }
diff --git a/src/core/lib/http/httpcli.c b/src/core/lib/http/httpcli.c
index 77af7b7c08..db995943a9 100644
--- a/src/core/lib/http/httpcli.c
+++ b/src/core/lib/http/httpcli.c
@@ -130,7 +130,7 @@ static void do_read(grpc_exec_ctx *exec_ctx, internal_request *req) {
 
 static void on_read(grpc_exec_ctx *exec_ctx, void *user_data,
                     grpc_error *error) {
-  internal_request *req = user_data;
+  internal_request *req = (internal_request *)user_data;
   size_t i;
 
   for (i = 0; i < req->incoming.count; i++) {
@@ -159,7 +159,7 @@ static void on_written(grpc_exec_ctx *exec_ctx, internal_request *req) {
 }
 
 static void done_write(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  internal_request *req = arg;
+  internal_request *req = (internal_request *)arg;
   if (error == GRPC_ERROR_NONE) {
     on_written(exec_ctx, req);
   } else {
@@ -175,7 +175,7 @@ static void start_write(grpc_exec_ctx *exec_ctx, internal_request *req) {
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
                               grpc_endpoint *ep) {
-  internal_request *req = arg;
+  internal_request *req = (internal_request *)arg;
 
   if (!ep) {
     next_address(exec_ctx, req, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
@@ -189,7 +189,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void on_connected(grpc_exec_ctx *exec_ctx, void *arg,
                          grpc_error *error) {
-  internal_request *req = arg;
+  internal_request *req = (internal_request *)arg;
 
   if (!req->ep) {
     next_address(exec_ctx, req, GRPC_ERROR_REF(error));
@@ -217,7 +217,7 @@ static void next_address(grpc_exec_ctx *exec_ctx, internal_request *req,
   GRPC_CLOSURE_INIT(&req->connected, on_connected, req,
                     grpc_schedule_on_exec_ctx);
   grpc_arg arg = grpc_channel_arg_pointer_create(
-      GRPC_ARG_RESOURCE_QUOTA, req->resource_quota,
+      (char *)GRPC_ARG_RESOURCE_QUOTA, req->resource_quota,
       grpc_resource_quota_arg_vtable());
   grpc_channel_args args = {1, &arg};
   grpc_tcp_client_connect(exec_ctx, &req->connected, &req->ep,
@@ -226,7 +226,7 @@ static void next_address(grpc_exec_ctx *exec_ctx, internal_request *req,
 }
 
 static void on_resolved(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  internal_request *req = arg;
+  internal_request *req = (internal_request *)arg;
   if (error != GRPC_ERROR_NONE) {
     finish(exec_ctx, req, GRPC_ERROR_REF(error));
     return;
@@ -243,7 +243,8 @@ static void internal_request_begin(grpc_exec_ctx *exec_ctx,
                                    gpr_timespec deadline, grpc_closure *on_done,
                                    grpc_httpcli_response *response,
                                    const char *name, grpc_slice request_text) {
-  internal_request *req = gpr_malloc(sizeof(internal_request));
+  internal_request *req =
+      (internal_request *)gpr_malloc(sizeof(internal_request));
   memset(req, 0, sizeof(*req));
   req->request_text = request_text;
   grpc_http_parser_init(&req->parser, GRPC_HTTP_RESPONSE, response);
diff --git a/src/core/lib/http/httpcli_security_connector.c b/src/core/lib/http/httpcli_security_connector.c
index 97c2886525..c553fa3981 100644
--- a/src/core/lib/http/httpcli_security_connector.c
+++ b/src/core/lib/http/httpcli_security_connector.c
@@ -43,7 +43,8 @@ static void httpcli_ssl_destroy(grpc_exec_ctx *exec_ctx,
   grpc_httpcli_ssl_channel_security_connector *c =
       (grpc_httpcli_ssl_channel_security_connector *)sc;
   if (c->handshaker_factory != NULL) {
-    tsi_ssl_client_handshaker_factory_destroy(c->handshaker_factory);
+    tsi_ssl_client_handshaker_factory_unref(c->handshaker_factory);
+    c->handshaker_factory = NULL;
   }
   if (c->secure_peer_name != NULL) gpr_free(c->secure_peer_name);
   gpr_free(sc);
diff --git a/src/core/lib/http/parser.c b/src/core/lib/http/parser.c
index 9c5e93f4e5..0950bd655e 100644
--- a/src/core/lib/http/parser.c
+++ b/src/core/lib/http/parser.c
@@ -28,7 +28,7 @@
 grpc_tracer_flag grpc_http1_trace = GRPC_TRACER_INITIALIZER(false, "http1");
 
 static char *buf2str(void *buffer, size_t length) {
-  char *out = gpr_malloc(length + 1);
+  char *out = (char *)gpr_malloc(length + 1);
   memcpy(out, buffer, length);
   out[length] = 0;
   return out;
@@ -197,7 +197,8 @@ static grpc_error *add_header(grpc_http_parser *parser) {
   if (*hdr_count == parser->hdr_capacity) {
     parser->hdr_capacity =
         GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2);
-    *hdrs = gpr_realloc(*hdrs, parser->hdr_capacity * sizeof(**hdrs));
+    *hdrs = (grpc_http_header *)gpr_realloc(
+        *hdrs, parser->hdr_capacity * sizeof(**hdrs));
   }
   (*hdrs)[(*hdr_count)++] = hdr;
 
@@ -255,7 +256,7 @@ static grpc_error *addbyte_body(grpc_http_parser *parser, uint8_t byte) {
 
   if (*body_length == parser->body_capacity) {
     parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
-    *body = gpr_realloc((void *)*body, parser->body_capacity);
+    *body = (char *)gpr_realloc((void *)*body, parser->body_capacity);
   }
   (*body)[*body_length] = (char)byte;
   (*body_length)++;
diff --git a/src/core/lib/iomgr/call_combiner.c b/src/core/lib/iomgr/call_combiner.c
new file mode 100644
index 0000000000..48d8eaec18
--- /dev/null
+++ b/src/core/lib/iomgr/call_combiner.c
@@ -0,0 +1,202 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/iomgr/call_combiner.h"
+
+#include <grpc/support/log.h>
+
+grpc_tracer_flag grpc_call_combiner_trace =
+    GRPC_TRACER_INITIALIZER(false, "call_combiner");
+
+static grpc_error* decode_cancel_state_error(gpr_atm cancel_state) {
+  if (cancel_state & 1) {
+    return (grpc_error*)(cancel_state & ~(gpr_atm)1);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+static gpr_atm encode_cancel_state_error(grpc_error* error) {
+  return (gpr_atm)1 | (gpr_atm)error;
+}
+
+void grpc_call_combiner_init(grpc_call_combiner* call_combiner) {
+  gpr_mpscq_init(&call_combiner->queue);
+}
+
+void grpc_call_combiner_destroy(grpc_call_combiner* call_combiner) {
+  gpr_mpscq_destroy(&call_combiner->queue);
+  GRPC_ERROR_UNREF(decode_cancel_state_error(call_combiner->cancel_state));
+}
+
+#ifndef NDEBUG
+#define DEBUG_ARGS , const char *file, int line
+#define DEBUG_FMT_STR "%s:%d: "
+#define DEBUG_FMT_ARGS , file, line
+#else
+#define DEBUG_ARGS
+#define DEBUG_FMT_STR
+#define DEBUG_FMT_ARGS
+#endif
+
+void grpc_call_combiner_start(grpc_exec_ctx* exec_ctx,
+                              grpc_call_combiner* call_combiner,
+                              grpc_closure* closure,
+                              grpc_error* error DEBUG_ARGS,
+                              const char* reason) {
+  if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+    gpr_log(GPR_DEBUG,
+            "==> grpc_call_combiner_start() [%p] closure=%p [" DEBUG_FMT_STR
+            "%s] error=%s",
+            call_combiner, closure DEBUG_FMT_ARGS, reason,
+            grpc_error_string(error));
+  }
+  size_t prev_size =
+      (size_t)gpr_atm_full_fetch_add(&call_combiner->size, (gpr_atm)1);
+  if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+    gpr_log(GPR_DEBUG, "  size: %" PRIdPTR " -> %" PRIdPTR, prev_size,
+            prev_size + 1);
+  }
+  if (prev_size == 0) {
+    if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+      gpr_log(GPR_DEBUG, "  EXECUTING IMMEDIATELY");
+    }
+    // Queue was empty, so execute this closure immediately.
+    GRPC_CLOSURE_SCHED(exec_ctx, closure, error);
+  } else {
+    if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+      gpr_log(GPR_INFO, "  QUEUING");
+    }
+    // Queue was not empty, so add closure to queue.
+    closure->error_data.error = error;
+    gpr_mpscq_push(&call_combiner->queue, (gpr_mpscq_node*)closure);
+  }
+}
+
+void grpc_call_combiner_stop(grpc_exec_ctx* exec_ctx,
+                             grpc_call_combiner* call_combiner DEBUG_ARGS,
+                             const char* reason) {
+  if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+    gpr_log(GPR_DEBUG,
+            "==> grpc_call_combiner_stop() [%p] [" DEBUG_FMT_STR "%s]",
+            call_combiner DEBUG_FMT_ARGS, reason);
+  }
+  size_t prev_size =
+      (size_t)gpr_atm_full_fetch_add(&call_combiner->size, (gpr_atm)-1);
+  if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+    gpr_log(GPR_DEBUG, "  size: %" PRIdPTR " -> %" PRIdPTR, prev_size,
+            prev_size - 1);
+  }
+  GPR_ASSERT(prev_size >= 1);
+  if (prev_size > 1) {
+    while (true) {
+      if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+        gpr_log(GPR_DEBUG, "  checking queue");
+      }
+      bool empty;
+      grpc_closure* closure = (grpc_closure*)gpr_mpscq_pop_and_check_end(
+          &call_combiner->queue, &empty);
+      if (closure == NULL) {
+        // This can happen either due to a race condition within the mpscq
+        // code or because of a race with grpc_call_combiner_start().
+        if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+          gpr_log(GPR_DEBUG, "  queue returned no result; checking again");
+        }
+        continue;
+      }
+      if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+        gpr_log(GPR_DEBUG, "  EXECUTING FROM QUEUE: closure=%p error=%s",
+                closure, grpc_error_string(closure->error_data.error));
+      }
+      GRPC_CLOSURE_SCHED(exec_ctx, closure, closure->error_data.error);
+      break;
+    }
+  } else if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+    gpr_log(GPR_DEBUG, "  queue empty");
+  }
+}
+
+void grpc_call_combiner_set_notify_on_cancel(grpc_exec_ctx* exec_ctx,
+                                             grpc_call_combiner* call_combiner,
+                                             grpc_closure* closure) {
+  while (true) {
+    // Decode original state.
+    gpr_atm original_state = gpr_atm_acq_load(&call_combiner->cancel_state);
+    grpc_error* original_error = decode_cancel_state_error(original_state);
+    // If error is set, invoke the cancellation closure immediately.
+    // Otherwise, store the new closure.
+    if (original_error != GRPC_ERROR_NONE) {
+      if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+        gpr_log(GPR_DEBUG,
+                "call_combiner=%p: scheduling notify_on_cancel callback=%p "
+                "for pre-existing cancellation",
+                call_combiner, closure);
+      }
+      GRPC_CLOSURE_SCHED(exec_ctx, closure, GRPC_ERROR_REF(original_error));
+      break;
+    } else {
+      if (gpr_atm_full_cas(&call_combiner->cancel_state, original_state,
+                           (gpr_atm)closure)) {
+        if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+          gpr_log(GPR_DEBUG, "call_combiner=%p: setting notify_on_cancel=%p",
+                  call_combiner, closure);
+        }
+        // If we replaced an earlier closure, invoke the original
+        // closure with GRPC_ERROR_NONE.  This allows callers to clean
+        // up any resources they may be holding for the callback.
+        if (original_state != 0) {
+          closure = (grpc_closure*)original_state;
+          if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+            gpr_log(GPR_DEBUG,
+                    "call_combiner=%p: scheduling old cancel callback=%p",
+                    call_combiner, closure);
+          }
+          GRPC_CLOSURE_SCHED(exec_ctx, closure, GRPC_ERROR_NONE);
+        }
+        break;
+      }
+    }
+    // cas failed, try again.
+  }
+}
+
+void grpc_call_combiner_cancel(grpc_exec_ctx* exec_ctx,
+                               grpc_call_combiner* call_combiner,
+                               grpc_error* error) {
+  while (true) {
+    gpr_atm original_state = gpr_atm_acq_load(&call_combiner->cancel_state);
+    grpc_error* original_error = decode_cancel_state_error(original_state);
+    if (original_error != GRPC_ERROR_NONE) {
+      GRPC_ERROR_UNREF(error);
+      break;
+    }
+    if (gpr_atm_full_cas(&call_combiner->cancel_state, original_state,
+                         encode_cancel_state_error(error))) {
+      if (original_state != 0) {
+        grpc_closure* notify_on_cancel = (grpc_closure*)original_state;
+        if (GRPC_TRACER_ON(grpc_call_combiner_trace)) {
+          gpr_log(GPR_DEBUG,
+                  "call_combiner=%p: scheduling notify_on_cancel callback=%p",
+                  call_combiner, notify_on_cancel);
+        }
+        GRPC_CLOSURE_SCHED(exec_ctx, notify_on_cancel, GRPC_ERROR_REF(error));
+      }
+      break;
+    }
+    // cas failed, try again.
+  }
+}
diff --git a/src/core/lib/iomgr/call_combiner.h b/src/core/lib/iomgr/call_combiner.h
new file mode 100644
index 0000000000..5cfb3f0c07
--- /dev/null
+++ b/src/core/lib/iomgr/call_combiner.h
@@ -0,0 +1,121 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+#define GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H
+
+#include <stddef.h>
+
+#include <grpc/support/atm.h>
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/support/mpscq.h"
+
+// A simple, lock-free mechanism for serializing activity related to a
+// single call.  This is similar to a combiner but is more lightweight.
+//
+// It requires the callback (or, in the common case where the callback
+// actually kicks off a chain of callbacks, the last callback in that
+// chain) to explicitly indicate (by calling GRPC_CALL_COMBINER_STOP())
+// when it is done with the action that was kicked off by the original
+// callback.
+
+extern grpc_tracer_flag grpc_call_combiner_trace;
+
+typedef struct {
+  gpr_atm size;  // size_t, num closures in queue or currently executing
+  gpr_mpscq queue;
+  // Either 0 (if not cancelled and no cancellation closure set),
+  // a grpc_closure* (if the lowest bit is 0),
+  // or a grpc_error* (if the lowest bit is 1).
+  gpr_atm cancel_state;
+} grpc_call_combiner;
+
+// Assumes memory was initialized to zero.
+void grpc_call_combiner_init(grpc_call_combiner* call_combiner);
+
+void grpc_call_combiner_destroy(grpc_call_combiner* call_combiner);
+
+#ifndef NDEBUG
+#define GRPC_CALL_COMBINER_START(exec_ctx, call_combiner, closure, error,   \
+                                 reason)                                    \
+  grpc_call_combiner_start((exec_ctx), (call_combiner), (closure), (error), \
+                           __FILE__, __LINE__, (reason))
+#define GRPC_CALL_COMBINER_STOP(exec_ctx, call_combiner, reason)           \
+  grpc_call_combiner_stop((exec_ctx), (call_combiner), __FILE__, __LINE__, \
+                          (reason))
+/// Starts processing \a closure on \a call_combiner.
+void grpc_call_combiner_start(grpc_exec_ctx* exec_ctx,
+                              grpc_call_combiner* call_combiner,
+                              grpc_closure* closure, grpc_error* error,
+                              const char* file, int line, const char* reason);
+/// Yields the call combiner to the next closure in the queue, if any.
+void grpc_call_combiner_stop(grpc_exec_ctx* exec_ctx,
+                             grpc_call_combiner* call_combiner,
+                             const char* file, int line, const char* reason);
+#else
+#define GRPC_CALL_COMBINER_START(exec_ctx, call_combiner, closure, error,   \
+                                 reason)                                    \
+  grpc_call_combiner_start((exec_ctx), (call_combiner), (closure), (error), \
+                           (reason))
+#define GRPC_CALL_COMBINER_STOP(exec_ctx, call_combiner, reason) \
+  grpc_call_combiner_stop((exec_ctx), (call_combiner), (reason))
+/// Starts processing \a closure on \a call_combiner.
+void grpc_call_combiner_start(grpc_exec_ctx* exec_ctx,
+                              grpc_call_combiner* call_combiner,
+                              grpc_closure* closure, grpc_error* error,
+                              const char* reason);
+/// Yields the call combiner to the next closure in the queue, if any.
+void grpc_call_combiner_stop(grpc_exec_ctx* exec_ctx,
+                             grpc_call_combiner* call_combiner,
+                             const char* reason);
+#endif
+
+/// Registers \a closure to be invoked by \a call_combiner when
+/// grpc_call_combiner_cancel() is called.
+///
+/// Once a closure is registered, it will always be scheduled exactly
+/// once; this allows the closure to hold references that will be freed
+/// regardless of whether or not the call was cancelled.  If a cancellation
+/// does occur, the closure will be scheduled with the cancellation error;
+/// otherwise, it will be scheduled with GRPC_ERROR_NONE.
+///
+/// The closure will be scheduled in the following cases:
+/// - If grpc_call_combiner_cancel() was called prior to registering the
+///   closure, it will be scheduled immediately with the cancelation error.
+/// - If grpc_call_combiner_cancel() is called after registering the
+///   closure, the closure will be scheduled with the cancellation error.
+/// - If grpc_call_combiner_set_notify_on_cancel() is called again to
+///   register a new cancellation closure, the previous cancellation
+///   closure will be scheduled with GRPC_ERROR_NONE.
+///
+/// If \a closure is NULL, then no closure will be invoked on
+/// cancellation; this effectively unregisters the previously set closure.
+/// However, most filters will not need to explicitly unregister their
+/// callbacks, as this is done automatically when the call is destroyed.
+void grpc_call_combiner_set_notify_on_cancel(grpc_exec_ctx* exec_ctx,
+                                             grpc_call_combiner* call_combiner,
+                                             grpc_closure* closure);
+
+/// Indicates that the call has been cancelled.
+void grpc_call_combiner_cancel(grpc_exec_ctx* exec_ctx,
+                               grpc_call_combiner* call_combiner,
+                               grpc_error* error);
+
+#endif /* GRPC_CORE_LIB_IOMGR_CALL_COMBINER_H */
diff --git a/src/core/lib/iomgr/closure.c b/src/core/lib/iomgr/closure.c
index 26f9cbe0fa..00edefc6ae 100644
--- a/src/core/lib/iomgr/closure.c
+++ b/src/core/lib/iomgr/closure.c
@@ -109,7 +109,7 @@ typedef struct {
 
 static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error) {
-  wrapped_closure *wc = arg;
+  wrapped_closure *wc = (wrapped_closure *)arg;
   grpc_iomgr_cb_func cb = wc->cb;
   void *cb_arg = wc->cb_arg;
   gpr_free(wc);
@@ -124,7 +124,7 @@ grpc_closure *grpc_closure_create(const char *file, int line,
 grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg,
                                   grpc_closure_scheduler *scheduler) {
 #endif
-  wrapped_closure *wc = gpr_malloc(sizeof(*wc));
+  wrapped_closure *wc = (wrapped_closure *)gpr_malloc(sizeof(*wc));
   wc->cb = cb;
   wc->cb_arg = cb_arg;
 #ifndef NDEBUG
@@ -167,7 +167,14 @@ void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *c,
   GPR_TIMER_BEGIN("grpc_closure_sched", 0);
   if (c != NULL) {
 #ifndef NDEBUG
-    GPR_ASSERT(!c->scheduled);
+    if (c->scheduled) {
+      gpr_log(GPR_ERROR,
+              "Closure already scheduled. (closure: %p, created: [%s:%d], "
+              "previously scheduled at: [%s: %d] run?: %s",
+              c, c->file_created, c->line_created, c->file_initiated,
+              c->line_initiated, c->run ? "true" : "false");
+      abort();
+    }
     c->scheduled = true;
     c->file_initiated = file;
     c->line_initiated = line;
@@ -191,7 +198,14 @@ void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
   while (c != NULL) {
     grpc_closure *next = c->next_data.next;
 #ifndef NDEBUG
-    GPR_ASSERT(!c->scheduled);
+    if (c->scheduled) {
+      gpr_log(GPR_ERROR,
+              "Closure already scheduled. (closure: %p, created: [%s:%d], "
+              "previously scheduled at: [%s: %d] run?: %s",
+              c, c->file_created, c->line_created, c->file_initiated,
+              c->line_initiated, c->run ? "true" : "false");
+      abort();
+    }
     c->scheduled = true;
     c->file_initiated = file;
     c->line_initiated = line;
diff --git a/src/core/lib/iomgr/combiner.c b/src/core/lib/iomgr/combiner.c
index 9b66987b68..f899b25f10 100644
--- a/src/core/lib/iomgr/combiner.c
+++ b/src/core/lib/iomgr/combiner.c
@@ -24,6 +24,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/profiling/timers.h"
 
@@ -73,14 +74,15 @@ static const grpc_closure_scheduler_vtable finally_scheduler = {
 static void offload(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
 
 grpc_combiner *grpc_combiner_create(void) {
-  grpc_combiner *lock = gpr_zalloc(sizeof(*lock));
+  grpc_combiner *lock = (grpc_combiner *)gpr_zalloc(sizeof(*lock));
   gpr_ref_init(&lock->refs, 1);
   lock->scheduler.vtable = &scheduler;
   lock->finally_scheduler.vtable = &finally_scheduler;
   gpr_atm_no_barrier_store(&lock->state, STATE_UNORPHANED);
   gpr_mpscq_init(&lock->queue);
   grpc_closure_list_init(&lock->final_list);
-  GRPC_CLOSURE_INIT(&lock->offload, offload, lock, grpc_executor_scheduler);
+  GRPC_CLOSURE_INIT(&lock->offload, offload, lock,
+                    grpc_executor_scheduler(GRPC_EXECUTOR_SHORT));
   GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p create", lock));
   return lock;
 }
@@ -153,6 +155,7 @@ static void push_first_on_exec_ctx(grpc_exec_ctx *exec_ctx,
 
 static void combiner_exec(grpc_exec_ctx *exec_ctx, grpc_closure *cl,
                           grpc_error *error) {
+  GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_ITEMS(exec_ctx);
   GPR_TIMER_BEGIN("combiner.execute", 0);
   grpc_combiner *lock = COMBINER_FROM_CLOSURE_SCHEDULER(cl, scheduler);
   gpr_atm last = gpr_atm_full_fetch_add(&lock->state, STATE_ELEM_COUNT_LOW_BIT);
@@ -160,6 +163,7 @@ static void combiner_exec(grpc_exec_ctx *exec_ctx, grpc_closure *cl,
                               "C:%p grpc_combiner_execute c=%p last=%" PRIdPTR,
                               lock, cl, last));
   if (last == 1) {
+    GRPC_STATS_INC_COMBINER_LOCKS_INITIATED(exec_ctx);
     gpr_atm_no_barrier_store(&lock->initiating_exec_ctx_or_null,
                              (gpr_atm)exec_ctx);
     // first element on this list: add it to the list of combiner locks
@@ -190,11 +194,12 @@ static void move_next(grpc_exec_ctx *exec_ctx) {
 }
 
 static void offload(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_combiner *lock = arg;
+  grpc_combiner *lock = (grpc_combiner *)arg;
   push_last_on_exec_ctx(exec_ctx, lock);
 }
 
 static void queue_offload(grpc_exec_ctx *exec_ctx, grpc_combiner *lock) {
+  GRPC_STATS_INC_COMBINER_LOCKS_OFFLOADED(exec_ctx);
   move_next(exec_ctx);
   GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p queue_offload", lock));
   GRPC_CLOSURE_SCHED(exec_ctx, &lock->offload, GRPC_ERROR_NONE);
@@ -325,6 +330,7 @@ static void enqueue_finally(grpc_exec_ctx *exec_ctx, void *closure,
 
 static void combiner_finally_exec(grpc_exec_ctx *exec_ctx,
                                   grpc_closure *closure, grpc_error *error) {
+  GRPC_STATS_INC_COMBINER_LOCKS_SCHEDULED_FINAL_ITEMS(exec_ctx);
   grpc_combiner *lock =
       COMBINER_FROM_CLOSURE_SCHEDULER(closure, finally_scheduler);
   GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG,
@@ -350,7 +356,8 @@ static void combiner_finally_exec(grpc_exec_ctx *exec_ctx,
 
 static void enqueue_finally(grpc_exec_ctx *exec_ctx, void *closure,
                             grpc_error *error) {
-  combiner_finally_exec(exec_ctx, closure, GRPC_ERROR_REF(error));
+  combiner_finally_exec(exec_ctx, (grpc_closure *)closure,
+                        GRPC_ERROR_REF(error));
 }
 
 grpc_closure_scheduler *grpc_combiner_scheduler(grpc_combiner *combiner) {
diff --git a/src/core/lib/iomgr/error.c b/src/core/lib/iomgr/error.c
index 3759dda992..aa05501537 100644
--- a/src/core/lib/iomgr/error.c
+++ b/src/core/lib/iomgr/error.c
@@ -211,7 +211,7 @@ static uint8_t get_placement(grpc_error **err, size_t size) {
 #ifndef NDEBUG
     grpc_error *orig = *err;
 #endif
-    *err = gpr_realloc(
+    *err = (grpc_error *)gpr_realloc(
         *err, sizeof(grpc_error) + (*err)->arena_capacity * sizeof(intptr_t));
 #ifndef NDEBUG
     if (GRPC_TRACER_ON(grpc_trace_error_refcount)) {
@@ -278,13 +278,13 @@ static void internal_set_time(grpc_error **err, grpc_error_times which,
   memcpy((*err)->arena + slot, &value, sizeof(value));
 }
 
-static void internal_add_error(grpc_error **err, grpc_error *new) {
-  grpc_linked_error new_last = {new, UINT8_MAX};
+static void internal_add_error(grpc_error **err, grpc_error *new_err) {
+  grpc_linked_error new_last = {new_err, UINT8_MAX};
   uint8_t slot = get_placement(err, sizeof(grpc_linked_error));
   if (slot == UINT8_MAX) {
-    gpr_log(GPR_ERROR, "Error %p is full, dropping error %p = %s", *err, new,
-            grpc_error_string(new));
-    GRPC_ERROR_UNREF(new);
+    gpr_log(GPR_ERROR, "Error %p is full, dropping error %p = %s", *err,
+            new_err, grpc_error_string(new_err));
+    GRPC_ERROR_UNREF(new_err);
     return;
   }
   if ((*err)->first_err == UINT8_MAX) {
@@ -321,8 +321,8 @@ grpc_error *grpc_error_create(const char *file, int line, grpc_slice desc,
   uint8_t initial_arena_capacity = (uint8_t)(
       DEFAULT_ERROR_CAPACITY +
       (uint8_t)(num_referencing * SLOTS_PER_LINKED_ERROR) + SURPLUS_CAPACITY);
-  grpc_error *err =
-      gpr_malloc(sizeof(*err) + initial_arena_capacity * sizeof(intptr_t));
+  grpc_error *err = (grpc_error *)gpr_malloc(
+      sizeof(*err) + initial_arena_capacity * sizeof(intptr_t));
   if (err == NULL) {  // TODO(ctiller): make gpr_malloc return NULL
     return GRPC_ERROR_OOM;
   }
@@ -406,7 +406,8 @@ static grpc_error *copy_error_and_unref(grpc_error *in) {
     if (in->arena_capacity - in->arena_size < (uint8_t)SLOTS_PER_STR) {
       new_arena_capacity = (uint8_t)(3 * new_arena_capacity / 2);
     }
-    out = gpr_malloc(sizeof(*in) + new_arena_capacity * sizeof(intptr_t));
+    out = (grpc_error *)gpr_malloc(sizeof(*in) +
+                                   new_arena_capacity * sizeof(intptr_t));
 #ifndef NDEBUG
     if (GRPC_TRACER_ON(grpc_trace_error_refcount)) {
       gpr_log(GPR_DEBUG, "%p create copying %p", out, in);
@@ -431,10 +432,10 @@ static grpc_error *copy_error_and_unref(grpc_error *in) {
 grpc_error *grpc_error_set_int(grpc_error *src, grpc_error_ints which,
                                intptr_t value) {
   GPR_TIMER_BEGIN("grpc_error_set_int", 0);
-  grpc_error *new = copy_error_and_unref(src);
-  internal_set_int(&new, which, value);
+  grpc_error *new_err = copy_error_and_unref(src);
+  internal_set_int(&new_err, which, value);
   GPR_TIMER_END("grpc_error_set_int", 0);
-  return new;
+  return new_err;
 }
 
 typedef struct {
@@ -476,10 +477,10 @@ bool grpc_error_get_int(grpc_error *err, grpc_error_ints which, intptr_t *p) {
 grpc_error *grpc_error_set_str(grpc_error *src, grpc_error_strs which,
                                grpc_slice str) {
   GPR_TIMER_BEGIN("grpc_error_set_str", 0);
-  grpc_error *new = copy_error_and_unref(src);
-  internal_set_str(&new, which, str);
+  grpc_error *new_err = copy_error_and_unref(src);
+  internal_set_str(&new_err, which, str);
   GPR_TIMER_END("grpc_error_set_str", 0);
-  return new;
+  return new_err;
 }
 
 bool grpc_error_get_str(grpc_error *err, grpc_error_strs which,
@@ -506,10 +507,10 @@ bool grpc_error_get_str(grpc_error *err, grpc_error_strs which,
 
 grpc_error *grpc_error_add_child(grpc_error *src, grpc_error *child) {
   GPR_TIMER_BEGIN("grpc_error_add_child", 0);
-  grpc_error *new = copy_error_and_unref(src);
-  internal_add_error(&new, child);
+  grpc_error *new_err = copy_error_and_unref(src);
+  internal_add_error(&new_err, child);
   GPR_TIMER_END("grpc_error_add_child", 0);
-  return new;
+  return new_err;
 }
 
 static const char *no_error_string = "\"No Error\"";
@@ -530,7 +531,7 @@ typedef struct {
 static void append_chr(char c, char **s, size_t *sz, size_t *cap) {
   if (*sz == *cap) {
     *cap = GPR_MAX(8, 3 * *cap / 2);
-    *s = gpr_realloc(*s, *cap);
+    *s = (char *)gpr_realloc(*s, *cap);
   }
   (*s)[(*sz)++] = c;
 }
@@ -582,7 +583,8 @@ static void append_esc_str(const uint8_t *str, size_t len, char **s, size_t *sz,
 static void append_kv(kv_pairs *kvs, char *key, char *value) {
   if (kvs->num_kvs == kvs->cap_kvs) {
     kvs->cap_kvs = GPR_MAX(3 * kvs->cap_kvs / 2, 4);
-    kvs->kvs = gpr_realloc(kvs->kvs, sizeof(*kvs->kvs) * kvs->cap_kvs);
+    kvs->kvs =
+        (kv_pair *)gpr_realloc(kvs->kvs, sizeof(*kvs->kvs) * kvs->cap_kvs);
   }
   kvs->kvs[kvs->num_kvs].key = key;
   kvs->kvs[kvs->num_kvs].value = value;
@@ -639,7 +641,7 @@ static char *key_time(grpc_error_times which) {
 
 static char *fmt_time(gpr_timespec tm) {
   char *out;
-  char *pfx = "!!";
+  const char *pfx = "!!";
   switch (tm.clock_type) {
     case GPR_CLOCK_MONOTONIC:
       pfx = "@monotonic:";
@@ -695,8 +697,8 @@ static char *errs_string(grpc_error *err) {
 }
 
 static int cmp_kvs(const void *a, const void *b) {
-  const kv_pair *ka = a;
-  const kv_pair *kb = b;
+  const kv_pair *ka = (const kv_pair *)a;
+  const kv_pair *kb = (const kv_pair *)b;
   return strcmp(ka->key, kb->key);
 }
 
@@ -731,7 +733,7 @@ const char *grpc_error_string(grpc_error *err) {
   void *p = (void *)gpr_atm_acq_load(&err->atomics.error_string);
   if (p != NULL) {
     GPR_TIMER_END("grpc_error_string", 0);
-    return p;
+    return (const char *)p;
   }
 
   kv_pairs kvs;
diff --git a/src/core/lib/iomgr/ev_epoll1_linux.c b/src/core/lib/iomgr/ev_epoll1_linux.c
index 6b034ca960..3ac12ab56f 100644
--- a/src/core/lib/iomgr/ev_epoll1_linux.c
+++ b/src/core/lib/iomgr/ev_epoll1_linux.c
@@ -39,6 +39,7 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/lockfree_event.h"
@@ -48,7 +49,60 @@
 #include "src/core/lib/support/string.h"
 
 static grpc_wakeup_fd global_wakeup_fd;
-static int g_epfd;
+
+/*******************************************************************************
+ * Singleton epoll set related fields
+ */
+
+#define MAX_EPOLL_EVENTS 100
+#define MAX_EPOLL_EVENTS_HANDLED_PER_ITERATION 1
+
+/* NOTE ON SYNCHRONIZATION:
+ * - Fields in this struct are only modified by the designated poller. Hence
+ *   there is no need for any locks to protect the struct.
+ * - num_events and cursor fields have to be of atomic type to provide memory
+ *   visibility guarantees only. i.e In case of multiple pollers, the designated
+ *   polling thread keeps changing; the thread that wrote these values may be
+ *   different from the thread reading the values
+ */
+typedef struct epoll_set {
+  int epfd;
+
+  /* The epoll_events after the last call to epoll_wait() */
+  struct epoll_event events[MAX_EPOLL_EVENTS];
+
+  /* The number of epoll_events after the last call to epoll_wait() */
+  gpr_atm num_events;
+
+  /* Index of the first event in epoll_events that has to be processed. This
+   * field is only valid if num_events > 0 */
+  gpr_atm cursor;
+} epoll_set;
+
+/* The global singleton epoll set */
+static epoll_set g_epoll_set;
+
+/* Must be called *only* once */
+static bool epoll_set_init() {
+  g_epoll_set.epfd = epoll_create1(EPOLL_CLOEXEC);
+  if (g_epoll_set.epfd < 0) {
+    gpr_log(GPR_ERROR, "epoll unavailable");
+    return false;
+  }
+
+  gpr_log(GPR_INFO, "grpc epoll fd: %d", g_epoll_set.epfd);
+  gpr_atm_no_barrier_store(&g_epoll_set.num_events, 0);
+  gpr_atm_no_barrier_store(&g_epoll_set.cursor, 0);
+  return true;
+}
+
+/* epoll_set_init() MUST be called before calling this. */
+static void epoll_set_shutdown() {
+  if (g_epoll_set.epfd >= 0) {
+    close(g_epoll_set.epfd);
+    g_epoll_set.epfd = -1;
+  }
+}
 
 /*******************************************************************************
  * Fd Declarations
@@ -91,7 +145,7 @@ static const char *kick_state_string(kick_state st) {
 }
 
 struct grpc_pollset_worker {
-  kick_state kick_state;
+  kick_state state;
   int kick_state_mutator;  // which line of code last changed kick state
   bool initialized_cv;
   grpc_pollset_worker *next;
@@ -100,29 +154,29 @@ struct grpc_pollset_worker {
   grpc_closure_list schedule_on_end_work;
 };
 
-#define SET_KICK_STATE(worker, state)        \
+#define SET_KICK_STATE(worker, kick_state)   \
   do {                                       \
-    (worker)->kick_state = (state);          \
+    (worker)->state = (kick_state);          \
     (worker)->kick_state_mutator = __LINE__; \
   } while (false)
 
-#define MAX_NEIGHBOURHOODS 1024
+#define MAX_NEIGHBORHOODS 1024
 
-typedef struct pollset_neighbourhood {
+typedef struct pollset_neighborhood {
   gpr_mu mu;
   grpc_pollset *active_root;
   char pad[GPR_CACHELINE_SIZE];
-} pollset_neighbourhood;
+} pollset_neighborhood;
 
 struct grpc_pollset {
   gpr_mu mu;
-  pollset_neighbourhood *neighbourhood;
-  bool reassigning_neighbourhood;
+  pollset_neighborhood *neighborhood;
+  bool reassigning_neighborhood;
   grpc_pollset_worker *root_worker;
   bool kicked_without_poller;
 
   /* Set to true if the pollset is observed to have no workers available to
-   * poll */
+     poll */
   bool seen_inactive;
   bool shutting_down;             /* Is the pollset shutting down ? */
   grpc_closure *shutdown_closure; /* Called after after shutdown is complete */
@@ -206,7 +260,7 @@ static grpc_fd *fd_create(int fd, const char *name) {
   gpr_mu_unlock(&fd_freelist_mu);
 
   if (new_fd == NULL) {
-    new_fd = gpr_malloc(sizeof(grpc_fd));
+    new_fd = (grpc_fd *)gpr_malloc(sizeof(grpc_fd));
   }
 
   new_fd->fd = fd;
@@ -226,9 +280,10 @@ static grpc_fd *fd_create(int fd, const char *name) {
 #endif
   gpr_free(fd_name);
 
-  struct epoll_event ev = {.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET),
-                           .data.ptr = new_fd};
-  if (epoll_ctl(g_epfd, EPOLL_CTL_ADD, fd, &ev) != 0) {
+  struct epoll_event ev;
+  ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
+  ev.data.ptr = new_fd;
+  if (epoll_ctl(g_epoll_set.epfd, EPOLL_CTL_ADD, fd, &ev) != 0) {
     gpr_log(GPR_ERROR, "epoll_ctl failed: %s", strerror(errno));
   }
 
@@ -326,9 +381,12 @@ static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
 
 GPR_TLS_DECL(g_current_thread_pollset);
 GPR_TLS_DECL(g_current_thread_worker);
+
+/* The designated poller */
 static gpr_atm g_active_poller;
-static pollset_neighbourhood *g_neighbourhoods;
-static size_t g_num_neighbourhoods;
+
+static pollset_neighborhood *g_neighborhoods;
+static size_t g_num_neighborhoods;
 
 /* Return true if first in list */
 static bool worker_insert(grpc_pollset *pollset, grpc_pollset_worker *worker) {
@@ -367,8 +425,8 @@ static worker_remove_result worker_remove(grpc_pollset *pollset,
   }
 }
 
-static size_t choose_neighbourhood(void) {
-  return (size_t)gpr_cpu_current_cpu() % g_num_neighbourhoods;
+static size_t choose_neighborhood(void) {
+  return (size_t)gpr_cpu_current_cpu() % g_num_neighborhoods;
 }
 
 static grpc_error *pollset_global_init(void) {
@@ -378,16 +436,18 @@ static grpc_error *pollset_global_init(void) {
   global_wakeup_fd.read_fd = -1;
   grpc_error *err = grpc_wakeup_fd_init(&global_wakeup_fd);
   if (err != GRPC_ERROR_NONE) return err;
-  struct epoll_event ev = {.events = (uint32_t)(EPOLLIN | EPOLLET),
-                           .data.ptr = &global_wakeup_fd};
-  if (epoll_ctl(g_epfd, EPOLL_CTL_ADD, global_wakeup_fd.read_fd, &ev) != 0) {
+  struct epoll_event ev;
+  ev.events = (uint32_t)(EPOLLIN | EPOLLET);
+  ev.data.ptr = &global_wakeup_fd;
+  if (epoll_ctl(g_epoll_set.epfd, EPOLL_CTL_ADD, global_wakeup_fd.read_fd,
+                &ev) != 0) {
     return GRPC_OS_ERROR(errno, "epoll_ctl");
   }
-  g_num_neighbourhoods = GPR_CLAMP(gpr_cpu_num_cores(), 1, MAX_NEIGHBOURHOODS);
-  g_neighbourhoods =
-      gpr_zalloc(sizeof(*g_neighbourhoods) * g_num_neighbourhoods);
-  for (size_t i = 0; i < g_num_neighbourhoods; i++) {
-    gpr_mu_init(&g_neighbourhoods[i].mu);
+  g_num_neighborhoods = GPR_CLAMP(gpr_cpu_num_cores(), 1, MAX_NEIGHBORHOODS);
+  g_neighborhoods = (pollset_neighborhood *)gpr_zalloc(
+      sizeof(*g_neighborhoods) * g_num_neighborhoods);
+  for (size_t i = 0; i < g_num_neighborhoods; i++) {
+    gpr_mu_init(&g_neighborhoods[i].mu);
   }
   return GRPC_ERROR_NONE;
 }
@@ -396,17 +456,17 @@ static void pollset_global_shutdown(void) {
   gpr_tls_destroy(&g_current_thread_pollset);
   gpr_tls_destroy(&g_current_thread_worker);
   if (global_wakeup_fd.read_fd != -1) grpc_wakeup_fd_destroy(&global_wakeup_fd);
-  for (size_t i = 0; i < g_num_neighbourhoods; i++) {
-    gpr_mu_destroy(&g_neighbourhoods[i].mu);
+  for (size_t i = 0; i < g_num_neighborhoods; i++) {
+    gpr_mu_destroy(&g_neighborhoods[i].mu);
   }
-  gpr_free(g_neighbourhoods);
+  gpr_free(g_neighborhoods);
 }
 
 static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
   gpr_mu_init(&pollset->mu);
   *mu = &pollset->mu;
-  pollset->neighbourhood = &g_neighbourhoods[choose_neighbourhood()];
-  pollset->reassigning_neighbourhood = false;
+  pollset->neighborhood = &g_neighborhoods[choose_neighborhood()];
+  pollset->reassigning_neighborhood = false;
   pollset->root_worker = NULL;
   pollset->kicked_without_poller = false;
   pollset->seen_inactive = true;
@@ -419,46 +479,52 @@ static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
 static void pollset_destroy(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
   gpr_mu_lock(&pollset->mu);
   if (!pollset->seen_inactive) {
-    pollset_neighbourhood *neighbourhood = pollset->neighbourhood;
+    pollset_neighborhood *neighborhood = pollset->neighborhood;
     gpr_mu_unlock(&pollset->mu);
-  retry_lock_neighbourhood:
-    gpr_mu_lock(&neighbourhood->mu);
+  retry_lock_neighborhood:
+    gpr_mu_lock(&neighborhood->mu);
     gpr_mu_lock(&pollset->mu);
     if (!pollset->seen_inactive) {
-      if (pollset->neighbourhood != neighbourhood) {
-        gpr_mu_unlock(&neighbourhood->mu);
-        neighbourhood = pollset->neighbourhood;
+      if (pollset->neighborhood != neighborhood) {
+        gpr_mu_unlock(&neighborhood->mu);
+        neighborhood = pollset->neighborhood;
         gpr_mu_unlock(&pollset->mu);
-        goto retry_lock_neighbourhood;
+        goto retry_lock_neighborhood;
       }
       pollset->prev->next = pollset->next;
       pollset->next->prev = pollset->prev;
-      if (pollset == pollset->neighbourhood->active_root) {
-        pollset->neighbourhood->active_root =
+      if (pollset == pollset->neighborhood->active_root) {
+        pollset->neighborhood->active_root =
             pollset->next == pollset ? NULL : pollset->next;
       }
     }
-    gpr_mu_unlock(&pollset->neighbourhood->mu);
+    gpr_mu_unlock(&pollset->neighborhood->mu);
   }
   gpr_mu_unlock(&pollset->mu);
   gpr_mu_destroy(&pollset->mu);
 }
 
-static grpc_error *pollset_kick_all(grpc_pollset *pollset) {
+static grpc_error *pollset_kick_all(grpc_exec_ctx *exec_ctx,
+                                    grpc_pollset *pollset) {
+  GPR_TIMER_BEGIN("pollset_kick_all", 0);
   grpc_error *error = GRPC_ERROR_NONE;
   if (pollset->root_worker != NULL) {
     grpc_pollset_worker *worker = pollset->root_worker;
     do {
-      switch (worker->kick_state) {
+      GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
+      switch (worker->state) {
         case KICKED:
+          GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx);
           break;
         case UNKICKED:
           SET_KICK_STATE(worker, KICKED);
           if (worker->initialized_cv) {
+            GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
             gpr_cv_signal(&worker->cv);
           }
           break;
         case DESIGNATED_POLLER:
+          GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD(exec_ctx);
           SET_KICK_STATE(worker, KICKED);
           append_error(&error, grpc_wakeup_fd_wakeup(&global_wakeup_fd),
                        "pollset_kick_all");
@@ -470,7 +536,7 @@ static grpc_error *pollset_kick_all(grpc_pollset *pollset) {
   }
   // TODO: sreek.  Check if we need to set 'kicked_without_poller' to true here
   // in the else case
-
+  GPR_TIMER_END("pollset_kick_all", 0);
   return error;
 }
 
@@ -478,6 +544,7 @@ static void pollset_maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
                                           grpc_pollset *pollset) {
   if (pollset->shutdown_closure != NULL && pollset->root_worker == NULL &&
       pollset->begin_refs == 0) {
+    GPR_TIMER_MARK("pollset_finish_shutdown", 0);
     GRPC_CLOSURE_SCHED(exec_ctx, pollset->shutdown_closure, GRPC_ERROR_NONE);
     pollset->shutdown_closure = NULL;
   }
@@ -485,16 +552,16 @@ static void pollset_maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
 
 static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                              grpc_closure *closure) {
+  GPR_TIMER_BEGIN("pollset_shutdown", 0);
   GPR_ASSERT(pollset->shutdown_closure == NULL);
   GPR_ASSERT(!pollset->shutting_down);
   pollset->shutdown_closure = closure;
   pollset->shutting_down = true;
-  GRPC_LOG_IF_ERROR("pollset_shutdown", pollset_kick_all(pollset));
+  GRPC_LOG_IF_ERROR("pollset_shutdown", pollset_kick_all(exec_ctx, pollset));
   pollset_maybe_finish_shutdown(exec_ctx, pollset);
+  GPR_TIMER_END("pollset_shutdown", 0);
 }
 
-#define MAX_EPOLL_EVENTS 100
-
 static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
                                            gpr_timespec now) {
   gpr_timespec timeout;
@@ -507,58 +574,105 @@ static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
   }
 
   static const gpr_timespec round_up = {
-      .clock_type = GPR_TIMESPAN, .tv_sec = 0, .tv_nsec = GPR_NS_PER_MS - 1};
+      0,                 /* tv_sec */
+      GPR_NS_PER_MS - 1, /* tv_nsec */
+      GPR_TIMESPAN       /* clock_type */
+  };
   timeout = gpr_time_sub(deadline, now);
   int millis = gpr_time_to_millis(gpr_time_add(timeout, round_up));
   return millis >= 1 ? millis : 1;
 }
 
-static grpc_error *pollset_epoll(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                                 gpr_timespec now, gpr_timespec deadline) {
-  struct epoll_event events[MAX_EPOLL_EVENTS];
-  static const char *err_desc = "pollset_poll";
-
-  int timeout = poll_deadline_to_millis_timeout(deadline, now);
-
-  if (timeout != 0) {
-    GRPC_SCHEDULING_START_BLOCKING_REGION;
-  }
-  int r;
-  do {
-    r = epoll_wait(g_epfd, events, MAX_EPOLL_EVENTS, timeout);
-  } while (r < 0 && errno == EINTR);
-  if (timeout != 0) {
-    GRPC_SCHEDULING_END_BLOCKING_REGION;
-  }
+/* Process the epoll events found by do_epoll_wait() function.
+   - g_epoll_set.cursor points to the index of the first event to be processed
+   - This function then processes up-to MAX_EPOLL_EVENTS_PER_ITERATION and
+     updates the g_epoll_set.cursor
+
+   NOTE ON SYNCRHONIZATION: Similar to do_epoll_wait(), this function is only
+   called by g_active_poller thread. So there is no need for synchronization
+   when accessing fields in g_epoll_set */
+static grpc_error *process_epoll_events(grpc_exec_ctx *exec_ctx,
+                                        grpc_pollset *pollset) {
+  static const char *err_desc = "process_events";
+  grpc_error *error = GRPC_ERROR_NONE;
 
-  if (r < 0) return GRPC_OS_ERROR(errno, "epoll_wait");
+  GPR_TIMER_BEGIN("process_epoll_events", 0);
+  long num_events = gpr_atm_acq_load(&g_epoll_set.num_events);
+  long cursor = gpr_atm_acq_load(&g_epoll_set.cursor);
+  for (int idx = 0;
+       (idx < MAX_EPOLL_EVENTS_HANDLED_PER_ITERATION) && cursor != num_events;
+       idx++) {
+    long c = cursor++;
+    struct epoll_event *ev = &g_epoll_set.events[c];
+    void *data_ptr = ev->data.ptr;
 
-  grpc_error *error = GRPC_ERROR_NONE;
-  for (int i = 0; i < r; i++) {
-    void *data_ptr = events[i].data.ptr;
     if (data_ptr == &global_wakeup_fd) {
       append_error(&error, grpc_wakeup_fd_consume_wakeup(&global_wakeup_fd),
                    err_desc);
     } else {
       grpc_fd *fd = (grpc_fd *)(data_ptr);
-      bool cancel = (events[i].events & (EPOLLERR | EPOLLHUP)) != 0;
-      bool read_ev = (events[i].events & (EPOLLIN | EPOLLPRI)) != 0;
-      bool write_ev = (events[i].events & EPOLLOUT) != 0;
+      bool cancel = (ev->events & (EPOLLERR | EPOLLHUP)) != 0;
+      bool read_ev = (ev->events & (EPOLLIN | EPOLLPRI)) != 0;
+      bool write_ev = (ev->events & EPOLLOUT) != 0;
+
       if (read_ev || cancel) {
         fd_become_readable(exec_ctx, fd, pollset);
       }
+
       if (write_ev || cancel) {
         fd_become_writable(exec_ctx, fd);
       }
     }
   }
-
+  gpr_atm_rel_store(&g_epoll_set.cursor, cursor);
+  GPR_TIMER_END("process_epoll_events", 0);
   return error;
 }
 
+/* Do epoll_wait and store the events in g_epoll_set.events field. This does not
+   "process" any of the events yet; that is done in process_epoll_events().
+   *See process_epoll_events() function for more details.
+
+   NOTE ON SYNCHRONIZATION: At any point of time, only the g_active_poller
+   (i.e the designated poller thread) will be calling this function. So there is
+   no need for any synchronization when accesing fields in g_epoll_set */
+static grpc_error *do_epoll_wait(grpc_exec_ctx *exec_ctx, grpc_pollset *ps,
+                                 gpr_timespec now, gpr_timespec deadline) {
+  GPR_TIMER_BEGIN("do_epoll_wait", 0);
+
+  int r;
+  int timeout = poll_deadline_to_millis_timeout(deadline, now);
+  if (timeout != 0) {
+    GRPC_SCHEDULING_START_BLOCKING_REGION;
+  }
+  do {
+    GRPC_STATS_INC_SYSCALL_POLL(exec_ctx);
+    r = epoll_wait(g_epoll_set.epfd, g_epoll_set.events, MAX_EPOLL_EVENTS,
+                   timeout);
+  } while (r < 0 && errno == EINTR);
+  if (timeout != 0) {
+    GRPC_SCHEDULING_END_BLOCKING_REGION;
+  }
+
+  if (r < 0) return GRPC_OS_ERROR(errno, "epoll_wait");
+
+  GRPC_STATS_INC_POLL_EVENTS_RETURNED(exec_ctx, r);
+
+  if (GRPC_TRACER_ON(grpc_polling_trace)) {
+    gpr_log(GPR_DEBUG, "ps: %p poll got %d events", ps, r);
+  }
+
+  gpr_atm_rel_store(&g_epoll_set.num_events, r);
+  gpr_atm_rel_store(&g_epoll_set.cursor, 0);
+
+  GPR_TIMER_END("do_epoll_wait", 0);
+  return GRPC_ERROR_NONE;
+}
+
 static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
                          grpc_pollset_worker **worker_hdl, gpr_timespec *now,
                          gpr_timespec deadline) {
+  GPR_TIMER_BEGIN("begin_worker", 0);
   if (worker_hdl != NULL) *worker_hdl = worker;
   worker->initialized_cv = false;
   SET_KICK_STATE(worker, UNKICKED);
@@ -573,69 +687,77 @@ static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
     // pollset has been observed to be inactive, we need to move back to the
     // active list
     bool is_reassigning = false;
-    if (!pollset->reassigning_neighbourhood) {
+    if (!pollset->reassigning_neighborhood) {
       is_reassigning = true;
-      pollset->reassigning_neighbourhood = true;
-      pollset->neighbourhood = &g_neighbourhoods[choose_neighbourhood()];
+      pollset->reassigning_neighborhood = true;
+      pollset->neighborhood = &g_neighborhoods[choose_neighborhood()];
     }
-    pollset_neighbourhood *neighbourhood = pollset->neighbourhood;
+    pollset_neighborhood *neighborhood = pollset->neighborhood;
     gpr_mu_unlock(&pollset->mu);
   // pollset unlocked: state may change (even worker->kick_state)
-  retry_lock_neighbourhood:
-    gpr_mu_lock(&neighbourhood->mu);
+  retry_lock_neighborhood:
+    gpr_mu_lock(&neighborhood->mu);
     gpr_mu_lock(&pollset->mu);
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, "PS:%p BEGIN_REORG:%p kick_state=%s is_reassigning=%d",
-              pollset, worker, kick_state_string(worker->kick_state),
+              pollset, worker, kick_state_string(worker->state),
               is_reassigning);
     }
     if (pollset->seen_inactive) {
-      if (neighbourhood != pollset->neighbourhood) {
-        gpr_mu_unlock(&neighbourhood->mu);
-        neighbourhood = pollset->neighbourhood;
+      if (neighborhood != pollset->neighborhood) {
+        gpr_mu_unlock(&neighborhood->mu);
+        neighborhood = pollset->neighborhood;
         gpr_mu_unlock(&pollset->mu);
-        goto retry_lock_neighbourhood;
+        goto retry_lock_neighborhood;
       }
-      pollset->seen_inactive = false;
-      if (neighbourhood->active_root == NULL) {
-        neighbourhood->active_root = pollset->next = pollset->prev = pollset;
-        /* TODO: sreek. Why would this worker state be other than UNKICKED
-         * here ? (since the worker isn't added to the pollset yet, there is no
-         * way it can be "found" by other threads to get kicked). */
-
-        /* If there is no designated poller, make this the designated poller */
-        if (worker->kick_state == UNKICKED &&
-            gpr_atm_no_barrier_cas(&g_active_poller, 0, (gpr_atm)worker)) {
-          SET_KICK_STATE(worker, DESIGNATED_POLLER);
+
+      /* In the brief time we released the pollset locks above, the worker MAY
+         have been kicked. In this case, the worker should get out of this
+         pollset ASAP and hence this should neither add the pollset to
+         neighborhood nor mark the pollset as active.
+
+         On a side note, the only way a worker's kick state could have changed
+         at this point is if it were "kicked specifically". Since the worker has
+         not added itself to the pollset yet (by calling worker_insert()), it is
+         not visible in the "kick any" path yet */
+      if (worker->state == UNKICKED) {
+        pollset->seen_inactive = false;
+        if (neighborhood->active_root == NULL) {
+          neighborhood->active_root = pollset->next = pollset->prev = pollset;
+          /* Make this the designated poller if there isn't one already */
+          if (worker->state == UNKICKED &&
+              gpr_atm_no_barrier_cas(&g_active_poller, 0, (gpr_atm)worker)) {
+            SET_KICK_STATE(worker, DESIGNATED_POLLER);
+          }
+        } else {
+          pollset->next = neighborhood->active_root;
+          pollset->prev = pollset->next->prev;
+          pollset->next->prev = pollset->prev->next = pollset;
         }
-      } else {
-        pollset->next = neighbourhood->active_root;
-        pollset->prev = pollset->next->prev;
-        pollset->next->prev = pollset->prev->next = pollset;
       }
     }
     if (is_reassigning) {
-      GPR_ASSERT(pollset->reassigning_neighbourhood);
-      pollset->reassigning_neighbourhood = false;
+      GPR_ASSERT(pollset->reassigning_neighborhood);
+      pollset->reassigning_neighborhood = false;
     }
-    gpr_mu_unlock(&neighbourhood->mu);
+    gpr_mu_unlock(&neighborhood->mu);
   }
 
   worker_insert(pollset, worker);
   pollset->begin_refs--;
-  if (worker->kick_state == UNKICKED && !pollset->kicked_without_poller) {
+  if (worker->state == UNKICKED && !pollset->kicked_without_poller) {
     GPR_ASSERT(gpr_atm_no_barrier_load(&g_active_poller) != (gpr_atm)worker);
     worker->initialized_cv = true;
     gpr_cv_init(&worker->cv);
-    while (worker->kick_state == UNKICKED && !pollset->shutting_down) {
+    while (worker->state == UNKICKED && !pollset->shutting_down) {
       if (GRPC_TRACER_ON(grpc_polling_trace)) {
         gpr_log(GPR_ERROR, "PS:%p BEGIN_WAIT:%p kick_state=%s shutdown=%d",
-                pollset, worker, kick_state_string(worker->kick_state),
+                pollset, worker, kick_state_string(worker->state),
                 pollset->shutting_down);
       }
 
       if (gpr_cv_wait(&worker->cv, &pollset->mu, deadline) &&
-          worker->kick_state == UNKICKED) {
+          worker->state == UNKICKED) {
         /* If gpr_cv_wait returns true (i.e a timeout), pretend that the worker
            received a kick */
         SET_KICK_STATE(worker, KICKED);
@@ -648,12 +770,12 @@ static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
     gpr_log(GPR_ERROR,
             "PS:%p BEGIN_DONE:%p kick_state=%s shutdown=%d "
             "kicked_without_poller: %d",
-            pollset, worker, kick_state_string(worker->kick_state),
+            pollset, worker, kick_state_string(worker->state),
             pollset->shutting_down, pollset->kicked_without_poller);
   }
 
   /* We release pollset lock in this function at a couple of places:
-   *   1. Briefly when assigning pollset to a neighbourhood
+   *   1. Briefly when assigning pollset to a neighborhood
    *   2. When doing gpr_cv_wait()
    * It is possible that 'kicked_without_poller' was set to true during (1) and
    * 'shutting_down' is set to true during (1) or (2). If either of them is
@@ -663,17 +785,20 @@ static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
 
   if (pollset->kicked_without_poller) {
     pollset->kicked_without_poller = false;
+    GPR_TIMER_END("begin_worker", 0);
     return false;
   }
 
-  return worker->kick_state == DESIGNATED_POLLER && !pollset->shutting_down;
+  GPR_TIMER_END("begin_worker", 0);
+  return worker->state == DESIGNATED_POLLER && !pollset->shutting_down;
 }
 
-static bool check_neighbourhood_for_available_poller(
-    pollset_neighbourhood *neighbourhood) {
+static bool check_neighborhood_for_available_poller(
+    grpc_exec_ctx *exec_ctx, pollset_neighborhood *neighborhood) {
+  GPR_TIMER_BEGIN("check_neighborhood_for_available_poller", 0);
   bool found_worker = false;
   do {
-    grpc_pollset *inspect = neighbourhood->active_root;
+    grpc_pollset *inspect = neighborhood->active_root;
     if (inspect == NULL) {
       break;
     }
@@ -682,7 +807,7 @@ static bool check_neighbourhood_for_available_poller(
     grpc_pollset_worker *inspect_worker = inspect->root_worker;
     if (inspect_worker != NULL) {
       do {
-        switch (inspect_worker->kick_state) {
+        switch (inspect_worker->state) {
           case UNKICKED:
             if (gpr_atm_no_barrier_cas(&g_active_poller, 0,
                                        (gpr_atm)inspect_worker)) {
@@ -692,6 +817,8 @@ static bool check_neighbourhood_for_available_poller(
               }
               SET_KICK_STATE(inspect_worker, DESIGNATED_POLLER);
               if (inspect_worker->initialized_cv) {
+                GPR_TIMER_MARK("signal worker", 0);
+                GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
                 gpr_cv_signal(&inspect_worker->cv);
               }
             } else {
@@ -717,8 +844,8 @@ static bool check_neighbourhood_for_available_poller(
         gpr_log(GPR_DEBUG, " .. mark pollset %p inactive", inspect);
       }
       inspect->seen_inactive = true;
-      if (inspect == neighbourhood->active_root) {
-        neighbourhood->active_root =
+      if (inspect == neighborhood->active_root) {
+        neighborhood->active_root =
             inspect->next == inspect ? NULL : inspect->next;
       }
       inspect->next->prev = inspect->prev;
@@ -727,12 +854,14 @@ static bool check_neighbourhood_for_available_poller(
     }
     gpr_mu_unlock(&inspect->mu);
   } while (!found_worker);
+  GPR_TIMER_END("check_neighborhood_for_available_poller", 0);
   return found_worker;
 }
 
 static void end_worker(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                        grpc_pollset_worker *worker,
                        grpc_pollset_worker **worker_hdl) {
+  GPR_TIMER_BEGIN("end_worker", 0);
   if (GRPC_TRACER_ON(grpc_polling_trace)) {
     gpr_log(GPR_DEBUG, "PS:%p END_WORKER:%p", pollset, worker);
   }
@@ -742,13 +871,14 @@ static void end_worker(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   grpc_closure_list_move(&worker->schedule_on_end_work,
                          &exec_ctx->closure_list);
   if (gpr_atm_no_barrier_load(&g_active_poller) == (gpr_atm)worker) {
-    if (worker->next != worker && worker->next->kick_state == UNKICKED) {
+    if (worker->next != worker && worker->next->state == UNKICKED) {
       if (GRPC_TRACER_ON(grpc_polling_trace)) {
         gpr_log(GPR_DEBUG, " .. choose next poller to be peer %p", worker);
       }
       GPR_ASSERT(worker->next->initialized_cv);
       gpr_atm_no_barrier_store(&g_active_poller, (gpr_atm)worker->next);
       SET_KICK_STATE(worker->next, DESIGNATED_POLLER);
+      GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
       gpr_cv_signal(&worker->next->cv);
       if (grpc_exec_ctx_has_work(exec_ctx)) {
         gpr_mu_unlock(&pollset->mu);
@@ -757,32 +887,33 @@ static void end_worker(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
       }
     } else {
       gpr_atm_no_barrier_store(&g_active_poller, 0);
-      size_t poller_neighbourhood_idx =
-          (size_t)(pollset->neighbourhood - g_neighbourhoods);
+      size_t poller_neighborhood_idx =
+          (size_t)(pollset->neighborhood - g_neighborhoods);
       gpr_mu_unlock(&pollset->mu);
       bool found_worker = false;
-      bool scan_state[MAX_NEIGHBOURHOODS];
-      for (size_t i = 0; !found_worker && i < g_num_neighbourhoods; i++) {
-        pollset_neighbourhood *neighbourhood =
-            &g_neighbourhoods[(poller_neighbourhood_idx + i) %
-                              g_num_neighbourhoods];
-        if (gpr_mu_trylock(&neighbourhood->mu)) {
+      bool scan_state[MAX_NEIGHBORHOODS];
+      for (size_t i = 0; !found_worker && i < g_num_neighborhoods; i++) {
+        pollset_neighborhood *neighborhood =
+            &g_neighborhoods[(poller_neighborhood_idx + i) %
+                             g_num_neighborhoods];
+        if (gpr_mu_trylock(&neighborhood->mu)) {
           found_worker =
-              check_neighbourhood_for_available_poller(neighbourhood);
-          gpr_mu_unlock(&neighbourhood->mu);
+              check_neighborhood_for_available_poller(exec_ctx, neighborhood);
+          gpr_mu_unlock(&neighborhood->mu);
           scan_state[i] = true;
         } else {
           scan_state[i] = false;
         }
       }
-      for (size_t i = 0; !found_worker && i < g_num_neighbourhoods; i++) {
+      for (size_t i = 0; !found_worker && i < g_num_neighborhoods; i++) {
         if (scan_state[i]) continue;
-        pollset_neighbourhood *neighbourhood =
-            &g_neighbourhoods[(poller_neighbourhood_idx + i) %
-                              g_num_neighbourhoods];
-        gpr_mu_lock(&neighbourhood->mu);
-        found_worker = check_neighbourhood_for_available_poller(neighbourhood);
-        gpr_mu_unlock(&neighbourhood->mu);
+        pollset_neighborhood *neighborhood =
+            &g_neighborhoods[(poller_neighborhood_idx + i) %
+                             g_num_neighborhoods];
+        gpr_mu_lock(&neighborhood->mu);
+        found_worker =
+            check_neighborhood_for_available_poller(exec_ctx, neighborhood);
+        gpr_mu_unlock(&neighborhood->mu);
       }
       grpc_exec_ctx_flush(exec_ctx);
       gpr_mu_lock(&pollset->mu);
@@ -802,42 +933,72 @@ static void end_worker(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
     pollset_maybe_finish_shutdown(exec_ctx, pollset);
   }
   GPR_ASSERT(gpr_atm_no_barrier_load(&g_active_poller) != (gpr_atm)worker);
+  GPR_TIMER_END("end_worker", 0);
 }
 
 /* pollset->po.mu lock must be held by the caller before calling this.
    The function pollset_work() may temporarily release the lock (pollset->po.mu)
    during the course of its execution but it will always re-acquire the lock and
    ensure that it is held by the time the function returns */
-static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *ps,
                                 grpc_pollset_worker **worker_hdl,
                                 gpr_timespec now, gpr_timespec deadline) {
   grpc_pollset_worker worker;
   grpc_error *error = GRPC_ERROR_NONE;
   static const char *err_desc = "pollset_work";
-  if (pollset->kicked_without_poller) {
-    pollset->kicked_without_poller = false;
+  GPR_TIMER_BEGIN("pollset_work", 0);
+  if (ps->kicked_without_poller) {
+    ps->kicked_without_poller = false;
+    GPR_TIMER_END("pollset_work", 0);
     return GRPC_ERROR_NONE;
   }
-  if (begin_worker(pollset, &worker, worker_hdl, &now, deadline)) {
-    gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
+
+  if (begin_worker(ps, &worker, worker_hdl, &now, deadline)) {
+    gpr_tls_set(&g_current_thread_pollset, (intptr_t)ps);
     gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
-    GPR_ASSERT(!pollset->shutting_down);
-    GPR_ASSERT(!pollset->seen_inactive);
-    gpr_mu_unlock(&pollset->mu);
-    append_error(&error, pollset_epoll(exec_ctx, pollset, now, deadline),
-                 err_desc);
-    gpr_mu_lock(&pollset->mu);
+    GPR_ASSERT(!ps->shutting_down);
+    GPR_ASSERT(!ps->seen_inactive);
+
+    gpr_mu_unlock(&ps->mu); /* unlock */
+    /* This is the designated polling thread at this point and should ideally do
+       polling. However, if there are unprocessed events left from a previous
+       call to do_epoll_wait(), skip calling epoll_wait() in this iteration and
+       process the pending epoll events.
+
+       The reason for decoupling do_epoll_wait and process_epoll_events is to
+       better distrubute the work (i.e handling epoll events) across multiple
+       threads
+
+       process_epoll_events() returns very quickly: It just queues the work on
+       exec_ctx but does not execute it (the actual exectution or more
+       accurately grpc_exec_ctx_flush() happens in end_worker() AFTER selecting
+       a designated poller). So we are not waiting long periods without a
+       designated poller */
+    if (gpr_atm_acq_load(&g_epoll_set.cursor) ==
+        gpr_atm_acq_load(&g_epoll_set.num_events)) {
+      append_error(&error, do_epoll_wait(exec_ctx, ps, now, deadline),
+                   err_desc);
+    }
+    append_error(&error, process_epoll_events(exec_ctx, ps), err_desc);
+
+    gpr_mu_lock(&ps->mu); /* lock */
+
     gpr_tls_set(&g_current_thread_worker, 0);
   } else {
-    gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
+    gpr_tls_set(&g_current_thread_pollset, (intptr_t)ps);
   }
-  end_worker(exec_ctx, pollset, &worker, worker_hdl);
+  end_worker(exec_ctx, ps, &worker, worker_hdl);
+
   gpr_tls_set(&g_current_thread_pollset, 0);
+  GPR_TIMER_END("pollset_work", 0);
   return error;
 }
 
-static grpc_error *pollset_kick(grpc_pollset *pollset,
+static grpc_error *pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                                 grpc_pollset_worker *specific_worker) {
+  GPR_TIMER_BEGIN("pollset_kick", 0);
+  GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
+  grpc_error *ret_err = GRPC_ERROR_NONE;
   if (GRPC_TRACER_ON(grpc_polling_trace)) {
     gpr_strvec log;
     gpr_strvec_init(&log);
@@ -849,14 +1010,14 @@ static grpc_error *pollset_kick(grpc_pollset *pollset,
     gpr_strvec_add(&log, tmp);
     if (pollset->root_worker != NULL) {
       gpr_asprintf(&tmp, " {kick_state=%s next=%p {kick_state=%s}}",
-                   kick_state_string(pollset->root_worker->kick_state),
+                   kick_state_string(pollset->root_worker->state),
                    pollset->root_worker->next,
-                   kick_state_string(pollset->root_worker->next->kick_state));
+                   kick_state_string(pollset->root_worker->next->state));
       gpr_strvec_add(&log, tmp);
     }
     if (specific_worker != NULL) {
       gpr_asprintf(&tmp, " worker_kick_state=%s",
-                   kick_state_string(specific_worker->kick_state));
+                   kick_state_string(specific_worker->state));
       gpr_strvec_add(&log, tmp);
     }
     tmp = gpr_strvec_flatten(&log, NULL);
@@ -864,49 +1025,56 @@ static grpc_error *pollset_kick(grpc_pollset *pollset,
     gpr_log(GPR_ERROR, "%s", tmp);
     gpr_free(tmp);
   }
+
   if (specific_worker == NULL) {
     if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)pollset) {
       grpc_pollset_worker *root_worker = pollset->root_worker;
       if (root_worker == NULL) {
+        GRPC_STATS_INC_POLLSET_KICKED_WITHOUT_POLLER(exec_ctx);
         pollset->kicked_without_poller = true;
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_ERROR, " .. kicked_without_poller");
         }
-        return GRPC_ERROR_NONE;
+        goto done;
       }
       grpc_pollset_worker *next_worker = root_worker->next;
-      if (root_worker->kick_state == KICKED) {
+      if (root_worker->state == KICKED) {
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx);
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_ERROR, " .. already kicked %p", root_worker);
         }
         SET_KICK_STATE(root_worker, KICKED);
-        return GRPC_ERROR_NONE;
-      } else if (next_worker->kick_state == KICKED) {
+        goto done;
+      } else if (next_worker->state == KICKED) {
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx);
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_ERROR, " .. already kicked %p", next_worker);
         }
         SET_KICK_STATE(next_worker, KICKED);
-        return GRPC_ERROR_NONE;
+        goto done;
       } else if (root_worker ==
                      next_worker &&  // only try and wake up a poller if
                                      // there is no next worker
                  root_worker == (grpc_pollset_worker *)gpr_atm_no_barrier_load(
                                     &g_active_poller)) {
+        GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD(exec_ctx);
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_ERROR, " .. kicked %p", root_worker);
         }
         SET_KICK_STATE(root_worker, KICKED);
-        return grpc_wakeup_fd_wakeup(&global_wakeup_fd);
-      } else if (next_worker->kick_state == UNKICKED) {
+        ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+        goto done;
+      } else if (next_worker->state == UNKICKED) {
+        GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_ERROR, " .. kicked %p", next_worker);
         }
         GPR_ASSERT(next_worker->initialized_cv);
         SET_KICK_STATE(next_worker, KICKED);
         gpr_cv_signal(&next_worker->cv);
-        return GRPC_ERROR_NONE;
-      } else if (next_worker->kick_state == DESIGNATED_POLLER) {
-        if (root_worker->kick_state != DESIGNATED_POLLER) {
+        goto done;
+      } else if (next_worker->state == DESIGNATED_POLLER) {
+        if (root_worker->state != DESIGNATED_POLLER) {
           if (GRPC_TRACER_ON(grpc_polling_trace)) {
             gpr_log(
                 GPR_ERROR,
@@ -915,61 +1083,78 @@ static grpc_error *pollset_kick(grpc_pollset *pollset,
           }
           SET_KICK_STATE(root_worker, KICKED);
           if (root_worker->initialized_cv) {
+            GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
             gpr_cv_signal(&root_worker->cv);
           }
-          return GRPC_ERROR_NONE;
+          goto done;
         } else {
+          GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD(exec_ctx);
           if (GRPC_TRACER_ON(grpc_polling_trace)) {
             gpr_log(GPR_ERROR, " .. non-root poller %p (root=%p)", next_worker,
                     root_worker);
           }
           SET_KICK_STATE(next_worker, KICKED);
-          return grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+          ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+          goto done;
         }
       } else {
-        GPR_ASSERT(next_worker->kick_state == KICKED);
+        GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx);
+        GPR_ASSERT(next_worker->state == KICKED);
         SET_KICK_STATE(next_worker, KICKED);
-        return GRPC_ERROR_NONE;
+        goto done;
       }
     } else {
+      GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD(exec_ctx);
       if (GRPC_TRACER_ON(grpc_polling_trace)) {
         gpr_log(GPR_ERROR, " .. kicked while waking up");
       }
-      return GRPC_ERROR_NONE;
+      goto done;
     }
-  } else if (specific_worker->kick_state == KICKED) {
+
+    GPR_UNREACHABLE_CODE(goto done);
+  }
+
+  if (specific_worker->state == KICKED) {
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, " .. specific worker already kicked");
     }
-    return GRPC_ERROR_NONE;
+    goto done;
   } else if (gpr_tls_get(&g_current_thread_worker) ==
              (intptr_t)specific_worker) {
+    GRPC_STATS_INC_POLLSET_KICK_OWN_THREAD(exec_ctx);
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, " .. mark %p kicked", specific_worker);
     }
     SET_KICK_STATE(specific_worker, KICKED);
-    return GRPC_ERROR_NONE;
+    goto done;
   } else if (specific_worker ==
              (grpc_pollset_worker *)gpr_atm_no_barrier_load(&g_active_poller)) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_FD(exec_ctx);
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, " .. kick active poller");
     }
     SET_KICK_STATE(specific_worker, KICKED);
-    return grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+    ret_err = grpc_wakeup_fd_wakeup(&global_wakeup_fd);
+    goto done;
   } else if (specific_worker->initialized_cv) {
+    GRPC_STATS_INC_POLLSET_KICK_WAKEUP_CV(exec_ctx);
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, " .. kick waiting worker");
     }
     SET_KICK_STATE(specific_worker, KICKED);
     gpr_cv_signal(&specific_worker->cv);
-    return GRPC_ERROR_NONE;
+    goto done;
   } else {
+    GRPC_STATS_INC_POLLSET_KICKED_AGAIN(exec_ctx);
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_ERROR, " .. kick non-waiting worker");
     }
     SET_KICK_STATE(specific_worker, KICKED);
-    return GRPC_ERROR_NONE;
+    goto done;
   }
+done:
+  GPR_TIMER_END("pollset_kick", 0);
+  return ret_err;
 }
 
 static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
@@ -1013,67 +1198,60 @@ static void pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx,
 static void shutdown_engine(void) {
   fd_global_shutdown();
   pollset_global_shutdown();
-  close(g_epfd);
+  epoll_set_shutdown();
 }
 
 static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
+    sizeof(grpc_pollset),
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_is_shutdown,
+    fd_get_read_notifier_pollset,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    shutdown_engine,
 };
 
 /* It is possible that GLIBC has epoll but the underlying kernel doesn't.
- * Create a dummy epoll_fd to make sure epoll support is available */
+ * Create epoll_fd (epoll_set_init() takes care of that) to make sure epoll
+ * support is available */
 const grpc_event_engine_vtable *grpc_init_epoll1_linux(bool explicit_request) {
-  if (!explicit_request) {
-    return NULL;
-  }
-
   if (!grpc_has_wakeup_fd()) {
     return NULL;
   }
 
-  g_epfd = epoll_create1(EPOLL_CLOEXEC);
-  if (g_epfd < 0) {
-    gpr_log(GPR_ERROR, "epoll unavailable");
+  if (!epoll_set_init()) {
     return NULL;
   }
 
   fd_global_init();
 
   if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
-    close(g_epfd);
     fd_global_shutdown();
+    epoll_set_shutdown();
     return NULL;
   }
 
-  gpr_log(GPR_ERROR, "grpc epoll fd: %d", g_epfd);
-
   return &vtable;
 }
 
diff --git a/src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c b/src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
deleted file mode 100644
index f2f3e15704..0000000000
--- a/src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c
+++ /dev/null
@@ -1,1957 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include "src/core/lib/iomgr/port.h"
-
-/* This polling engine is only relevant on linux kernels supporting epoll() */
-#ifdef GRPC_LINUX_EPOLL
-
-#include "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h"
-
-#include <assert.h>
-#include <errno.h>
-#include <limits.h>
-#include <poll.h>
-#include <pthread.h>
-#include <signal.h>
-#include <string.h>
-#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/tls.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/lib/debug/trace.h"
-#include "src/core/lib/iomgr/ev_posix.h"
-#include "src/core/lib/iomgr/iomgr_internal.h"
-#include "src/core/lib/iomgr/lockfree_event.h"
-#include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/iomgr/wakeup_fd_posix.h"
-#include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/block_annotate.h"
-#include "src/core/lib/support/env.h"
-
-#define GRPC_POLLING_TRACE(fmt, ...)        \
-  if (GRPC_TRACER_ON(grpc_polling_trace)) { \
-    gpr_log(GPR_INFO, (fmt), __VA_ARGS__);  \
-  }
-
-#define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker *)1)
-
-/* The maximum number of polling threads per polling island. By default no
-   limit */
-static int g_max_pollers_per_pi = INT_MAX;
-
-static int grpc_wakeup_signal = -1;
-static bool is_grpc_wakeup_signal_initialized = false;
-
-/* Implements the function defined in grpc_posix.h. This function might be
- * called before even calling grpc_init() to set either a different signal to
- * use. If signum == -1, then the use of signals is disabled */
-static void grpc_use_signal(int signum) {
-  grpc_wakeup_signal = signum;
-  is_grpc_wakeup_signal_initialized = true;
-
-  if (grpc_wakeup_signal < 0) {
-    gpr_log(GPR_INFO,
-            "Use of signals is disabled. Epoll engine will not be used");
-  } else {
-    gpr_log(GPR_INFO, "epoll engine will be using signal: %d",
-            grpc_wakeup_signal);
-  }
-}
-
-struct polling_island;
-
-typedef enum {
-  POLL_OBJ_FD,
-  POLL_OBJ_POLLSET,
-  POLL_OBJ_POLLSET_SET
-} poll_obj_type;
-
-typedef struct poll_obj {
-#ifndef NDEBUG
-  poll_obj_type obj_type;
-#endif
-  gpr_mu mu;
-  struct polling_island *pi;
-} poll_obj;
-
-static const char *poll_obj_string(poll_obj_type po_type) {
-  switch (po_type) {
-    case POLL_OBJ_FD:
-      return "fd";
-    case POLL_OBJ_POLLSET:
-      return "pollset";
-    case POLL_OBJ_POLLSET_SET:
-      return "pollset_set";
-  }
-
-  GPR_UNREACHABLE_CODE(return "UNKNOWN");
-}
-
-/*******************************************************************************
- * Fd Declarations
- */
-
-#define FD_FROM_PO(po) ((grpc_fd *)(po))
-
-struct grpc_fd {
-  poll_obj po;
-
-  int fd;
-  /* refst format:
-       bit 0    : 1=Active / 0=Orphaned
-       bits 1-n : refcount
-     Ref/Unref by two to avoid altering the orphaned bit */
-  gpr_atm refst;
-
-  /* The fd is either closed or we relinquished control of it. In either
-     cases, this indicates that the 'fd' on this structure is no longer
-     valid */
-  bool orphaned;
-
-  gpr_atm read_closure;
-  gpr_atm write_closure;
-
-  struct grpc_fd *freelist_next;
-  grpc_closure *on_done_closure;
-
-  /* The pollset that last noticed that the fd is readable. The actual type
-   * stored in this is (grpc_pollset *) */
-  gpr_atm read_notifier_pollset;
-
-  grpc_iomgr_object iomgr_object;
-};
-
-/* Reference counting for fds */
-#ifndef NDEBUG
-static void fd_ref(grpc_fd *fd, const char *reason, const char *file, int line);
-static void fd_unref(grpc_fd *fd, const char *reason, const char *file,
-                     int line);
-#define GRPC_FD_REF(fd, reason) fd_ref(fd, reason, __FILE__, __LINE__)
-#define GRPC_FD_UNREF(fd, reason) fd_unref(fd, reason, __FILE__, __LINE__)
-#else
-static void fd_ref(grpc_fd *fd);
-static void fd_unref(grpc_fd *fd);
-#define GRPC_FD_REF(fd, reason) fd_ref(fd)
-#define GRPC_FD_UNREF(fd, reason) fd_unref(fd)
-#endif
-
-static void fd_global_init(void);
-static void fd_global_shutdown(void);
-
-/*******************************************************************************
- * Polling island Declarations
- */
-
-#ifndef NDEBUG
-
-#define PI_ADD_REF(p, r) pi_add_ref_dbg((p), (r), __FILE__, __LINE__)
-#define PI_UNREF(exec_ctx, p, r) \
-  pi_unref_dbg((exec_ctx), (p), (r), __FILE__, __LINE__)
-
-#else
-
-#define PI_ADD_REF(p, r) pi_add_ref((p))
-#define PI_UNREF(exec_ctx, p, r) pi_unref((exec_ctx), (p))
-
-#endif
-
-typedef struct worker_node {
-  struct worker_node *next;
-  struct worker_node *prev;
-} worker_node;
-
-/* This is also used as grpc_workqueue (by directly casing it) */
-typedef struct polling_island {
-  gpr_mu mu;
-  /* Ref count. Use PI_ADD_REF() and PI_UNREF() macros to increment/decrement
-     the refcount.
-     Once the ref count becomes zero, this structure is destroyed which means
-     we should ensure that there is never a scenario where a PI_ADD_REF() is
-     racing with a PI_UNREF() that just made the ref_count zero. */
-  gpr_atm ref_count;
-
-  /* Pointer to the polling_island this merged into.
-   * merged_to value is only set once in polling_island's lifetime (and that too
-   * only if the island is merged with another island). Because of this, we can
-   * use gpr_atm type here so that we can do atomic access on this and reduce
-   * lock contention on 'mu' mutex.
-   *
-   * Note that if this field is not NULL (i.e not 0), all the remaining fields
-   * (except mu and ref_count) are invalid and must be ignored. */
-  gpr_atm merged_to;
-
-  /* Number of threads currently polling on this island */
-  gpr_atm poller_count;
-
-  /* The list of workers waiting to do polling on this polling island */
-  gpr_mu worker_list_mu;
-  worker_node worker_list_head;
-
-  /* The fd of the underlying epoll set */
-  int epoll_fd;
-
-  /* The file descriptors in the epoll set */
-  size_t fd_cnt;
-  size_t fd_capacity;
-  grpc_fd **fds;
-} polling_island;
-
-/*******************************************************************************
- * Pollset Declarations
- */
-#define WORKER_FROM_WORKER_LIST_NODE(p)          \
-  (struct grpc_pollset_worker *)(((char *)(p)) - \
-                                 offsetof(grpc_pollset_worker, pi_list_link))
-struct grpc_pollset_worker {
-  /* Thread id of this worker */
-  pthread_t pt_id;
-
-  /* Used to prevent a worker from getting kicked multiple times */
-  gpr_atm is_kicked;
-
-  struct grpc_pollset_worker *next;
-  struct grpc_pollset_worker *prev;
-
-  /* Indicates if it is this worker's turn to do epoll */
-  gpr_atm is_polling_turn;
-
-  /* Node in the polling island's worker list. */
-  worker_node pi_list_link;
-};
-
-struct grpc_pollset {
-  poll_obj po;
-
-  grpc_pollset_worker root_worker;
-  bool kicked_without_pollers;
-
-  bool shutting_down;          /* Is the pollset shutting down ? */
-  bool finish_shutdown_called; /* Is the 'finish_shutdown_locked()' called ? */
-  grpc_closure *shutdown_done; /* Called after after shutdown is complete */
-};
-
-/*******************************************************************************
- * Pollset-set Declarations
- */
-struct grpc_pollset_set {
-  poll_obj po;
-};
-
-/*******************************************************************************
- * Common helpers
- */
-
-static bool append_error(grpc_error **composite, grpc_error *error,
-                         const char *desc) {
-  if (error == GRPC_ERROR_NONE) return true;
-  if (*composite == GRPC_ERROR_NONE) {
-    *composite = GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc);
-  }
-  *composite = grpc_error_add_child(*composite, error);
-  return false;
-}
-
-/*******************************************************************************
- * Polling island Definitions
- */
-
-/* The wakeup fd that is used to wake up all threads in a Polling island. This
-   is useful in the polling island merge operation where we need to wakeup all
-   the threads currently polling the smaller polling island (so that they can
-   start polling the new/merged polling island)
-
-   NOTE: This fd is initialized to be readable and MUST NOT be consumed i.e the
-   threads that woke up MUST NOT call grpc_wakeup_fd_consume_wakeup() */
-static grpc_wakeup_fd polling_island_wakeup_fd;
-
-/* The polling island being polled right now.
-   See comments in workqueue_maybe_wakeup for why this is tracked. */
-static __thread polling_island *g_current_thread_polling_island;
-
-/* Forward declaration */
-static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi);
-
-#ifdef GRPC_TSAN
-/* Currently TSAN may incorrectly flag data races between epoll_ctl and
-   epoll_wait for any grpc_fd structs that are added to the epoll set via
-   epoll_ctl and are returned (within a very short window) via epoll_wait().
-
-   To work-around this race, we establish a happens-before relation between
-   the code just-before epoll_ctl() and the code after epoll_wait() by using
-   this atomic */
-gpr_atm g_epoll_sync;
-#endif /* defined(GRPC_TSAN) */
-
-static void pi_add_ref(polling_island *pi);
-static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi);
-
-#ifndef NDEBUG
-static void pi_add_ref_dbg(polling_island *pi, const char *reason,
-                           const char *file, int line) {
-  if (GRPC_TRACER_ON(grpc_polling_trace)) {
-    gpr_atm old_cnt = gpr_atm_acq_load(&pi->ref_count);
-    gpr_log(GPR_DEBUG, "Add ref pi: %p, old:%" PRIdPTR " -> new:%" PRIdPTR
-                       " (%s) - (%s, %d)",
-            pi, old_cnt, old_cnt + 1, reason, file, line);
-  }
-  pi_add_ref(pi);
-}
-
-static void pi_unref_dbg(grpc_exec_ctx *exec_ctx, polling_island *pi,
-                         const char *reason, const char *file, int line) {
-  if (GRPC_TRACER_ON(grpc_polling_trace)) {
-    gpr_atm old_cnt = gpr_atm_acq_load(&pi->ref_count);
-    gpr_log(GPR_DEBUG, "Unref pi: %p, old:%" PRIdPTR " -> new:%" PRIdPTR
-                       " (%s) - (%s, %d)",
-            pi, old_cnt, (old_cnt - 1), reason, file, line);
-  }
-  pi_unref(exec_ctx, pi);
-}
-#endif
-
-static void pi_add_ref(polling_island *pi) {
-  gpr_atm_no_barrier_fetch_add(&pi->ref_count, 1);
-}
-
-static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi) {
-  /* If ref count went to zero, delete the polling island.
-     Note that this deletion not be done under a lock. Once the ref count goes
-     to zero, we are guaranteed that no one else holds a reference to the
-     polling island (and that there is no racing pi_add_ref() call either).
-
-     Also, if we are deleting the polling island and the merged_to field is
-     non-empty, we should remove a ref to the merged_to polling island
-   */
-  if (1 == gpr_atm_full_fetch_add(&pi->ref_count, -1)) {
-    polling_island *next = (polling_island *)gpr_atm_acq_load(&pi->merged_to);
-    polling_island_delete(exec_ctx, pi);
-    if (next != NULL) {
-      PI_UNREF(exec_ctx, next, "pi_delete"); /* Recursive call */
-    }
-  }
-}
-
-static void worker_node_init(worker_node *node) {
-  node->next = node->prev = node;
-}
-
-/* Not thread safe. Do under a list-level lock */
-static void push_back_worker_node(worker_node *head, worker_node *node) {
-  node->next = head;
-  node->prev = head->prev;
-  head->prev->next = node;
-  head->prev = node;
-}
-
-/* Not thread safe. Do under a list-level lock */
-static void remove_worker_node(worker_node *node) {
-  node->next->prev = node->prev;
-  node->prev->next = node->next;
-  /* If node's next and prev point to itself, the node is considered detached
-   * from the list*/
-  node->next = node->prev = node;
-}
-
-/* Not thread safe. Do under a list-level lock */
-static worker_node *pop_front_worker_node(worker_node *head) {
-  worker_node *node = head->next;
-  if (node != head) {
-    remove_worker_node(node);
-  } else {
-    node = NULL;
-  }
-
-  return node;
-}
-
-/* Returns true if the node's next and prev are pointing to itself (which
-   indicates that the node is not in the list */
-static bool is_worker_node_detached(worker_node *node) {
-  return (node->next == node->prev && node->next == node);
-}
-
-/* The caller is expected to hold pi->mu lock before calling this function
- */
-static void polling_island_add_fds_locked(polling_island *pi, grpc_fd **fds,
-                                          size_t fd_count, bool add_fd_refs,
-                                          grpc_error **error) {
-  int err;
-  size_t i;
-  struct epoll_event ev;
-  char *err_msg;
-  const char *err_desc = "polling_island_add_fds";
-
-#ifdef GRPC_TSAN
-  /* See the definition of g_epoll_sync for more context */
-  gpr_atm_rel_store(&g_epoll_sync, (gpr_atm)0);
-#endif /* defined(GRPC_TSAN) */
-
-  for (i = 0; i < fd_count; i++) {
-    ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
-    ev.data.ptr = fds[i];
-    err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_ADD, fds[i]->fd, &ev);
-
-    if (err < 0) {
-      if (errno != EEXIST) {
-        gpr_asprintf(
-            &err_msg,
-            "epoll_ctl (epoll_fd: %d) add fd: %d failed with error: %d (%s)",
-            pi->epoll_fd, fds[i]->fd, errno, strerror(errno));
-        append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-        gpr_free(err_msg);
-      }
-
-      continue;
-    }
-
-    if (pi->fd_cnt == pi->fd_capacity) {
-      pi->fd_capacity = GPR_MAX(pi->fd_capacity + 8, pi->fd_cnt * 3 / 2);
-      pi->fds = gpr_realloc(pi->fds, sizeof(grpc_fd *) * pi->fd_capacity);
-    }
-
-    pi->fds[pi->fd_cnt++] = fds[i];
-    if (add_fd_refs) {
-      GRPC_FD_REF(fds[i], "polling_island");
-    }
-  }
-}
-
-/* The caller is expected to hold pi->mu before calling this */
-static void polling_island_add_wakeup_fd_locked(polling_island *pi,
-                                                grpc_wakeup_fd *wakeup_fd,
-                                                grpc_error **error) {
-  struct epoll_event ev;
-  int err;
-  char *err_msg;
-  const char *err_desc = "polling_island_add_wakeup_fd";
-
-  ev.events = (uint32_t)(EPOLLIN | EPOLLET);
-  ev.data.ptr = wakeup_fd;
-  err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_ADD,
-                  GRPC_WAKEUP_FD_GET_READ_FD(wakeup_fd), &ev);
-  if (err < 0 && errno != EEXIST) {
-    gpr_asprintf(&err_msg,
-                 "epoll_ctl (epoll_fd: %d) add wakeup fd: %d failed with "
-                 "error: %d (%s)",
-                 pi->epoll_fd, GRPC_WAKEUP_FD_GET_READ_FD(wakeup_fd), errno,
-                 strerror(errno));
-    append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-    gpr_free(err_msg);
-  }
-}
-
-/* The caller is expected to hold pi->mu lock before calling this function */
-static void polling_island_remove_all_fds_locked(polling_island *pi,
-                                                 bool remove_fd_refs,
-                                                 grpc_error **error) {
-  int err;
-  size_t i;
-  char *err_msg;
-  const char *err_desc = "polling_island_remove_fds";
-
-  for (i = 0; i < pi->fd_cnt; i++) {
-    err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_DEL, pi->fds[i]->fd, NULL);
-    if (err < 0 && errno != ENOENT) {
-      gpr_asprintf(&err_msg,
-                   "epoll_ctl (epoll_fd: %d) delete fds[%zu]: %d failed with "
-                   "error: %d (%s)",
-                   pi->epoll_fd, i, pi->fds[i]->fd, errno, strerror(errno));
-      append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-      gpr_free(err_msg);
-    }
-
-    if (remove_fd_refs) {
-      GRPC_FD_UNREF(pi->fds[i], "polling_island");
-    }
-  }
-
-  pi->fd_cnt = 0;
-}
-
-/* The caller is expected to hold pi->mu lock before calling this function */
-static void polling_island_remove_fd_locked(polling_island *pi, grpc_fd *fd,
-                                            bool is_fd_closed,
-                                            grpc_error **error) {
-  int err;
-  size_t i;
-  char *err_msg;
-  const char *err_desc = "polling_island_remove_fd";
-
-  /* If fd is already closed, then it would have been automatically been removed
-     from the epoll set */
-  if (!is_fd_closed) {
-    err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_DEL, fd->fd, NULL);
-    if (err < 0 && errno != ENOENT) {
-      gpr_asprintf(
-          &err_msg,
-          "epoll_ctl (epoll_fd: %d) del fd: %d failed with error: %d (%s)",
-          pi->epoll_fd, fd->fd, errno, strerror(errno));
-      append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-      gpr_free(err_msg);
-    }
-  }
-
-  for (i = 0; i < pi->fd_cnt; i++) {
-    if (pi->fds[i] == fd) {
-      pi->fds[i] = pi->fds[--pi->fd_cnt];
-      GRPC_FD_UNREF(fd, "polling_island");
-      break;
-    }
-  }
-}
-
-/* Might return NULL in case of an error */
-static polling_island *polling_island_create(grpc_exec_ctx *exec_ctx,
-                                             grpc_fd *initial_fd,
-                                             grpc_error **error) {
-  polling_island *pi = NULL;
-  const char *err_desc = "polling_island_create";
-
-  *error = GRPC_ERROR_NONE;
-
-  pi = gpr_malloc(sizeof(*pi));
-  gpr_mu_init(&pi->mu);
-  pi->fd_cnt = 0;
-  pi->fd_capacity = 0;
-  pi->fds = NULL;
-  pi->epoll_fd = -1;
-
-  gpr_atm_rel_store(&pi->ref_count, 0);
-  gpr_atm_rel_store(&pi->poller_count, 0);
-  gpr_atm_rel_store(&pi->merged_to, (gpr_atm)NULL);
-
-  gpr_mu_init(&pi->worker_list_mu);
-  worker_node_init(&pi->worker_list_head);
-
-  pi->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
-
-  if (pi->epoll_fd < 0) {
-    append_error(error, GRPC_OS_ERROR(errno, "epoll_create1"), err_desc);
-    goto done;
-  }
-
-  if (initial_fd != NULL) {
-    polling_island_add_fds_locked(pi, &initial_fd, 1, true, error);
-  }
-
-done:
-  if (*error != GRPC_ERROR_NONE) {
-    polling_island_delete(exec_ctx, pi);
-    pi = NULL;
-  }
-  return pi;
-}
-
-static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi) {
-  GPR_ASSERT(pi->fd_cnt == 0);
-
-  if (pi->epoll_fd >= 0) {
-    close(pi->epoll_fd);
-  }
-  gpr_mu_destroy(&pi->mu);
-  gpr_mu_destroy(&pi->worker_list_mu);
-  GPR_ASSERT(is_worker_node_detached(&pi->worker_list_head));
-
-  gpr_free(pi->fds);
-  gpr_free(pi);
-}
-
-/* Attempts to gets the last polling island in the linked list (liked by the
- * 'merged_to' field). Since this does not lock the polling island, there are no
- * guarantees that the island returned is the last island */
-static polling_island *polling_island_maybe_get_latest(polling_island *pi) {
-  polling_island *next = (polling_island *)gpr_atm_acq_load(&pi->merged_to);
-  while (next != NULL) {
-    pi = next;
-    next = (polling_island *)gpr_atm_acq_load(&pi->merged_to);
-  }
-
-  return pi;
-}
-
-/* Gets the lock on the *latest* polling island i.e the last polling island in
-   the linked list (linked by the 'merged_to' field). Call gpr_mu_unlock on the
-   returned polling island's mu.
-   Usage: To lock/unlock polling island "pi", do the following:
-      polling_island *pi_latest = polling_island_lock(pi);
-      ...
-      ... critical section ..
-      ...
-      gpr_mu_unlock(&pi_latest->mu); // NOTE: use pi_latest->mu. NOT pi->mu */
-static polling_island *polling_island_lock(polling_island *pi) {
-  polling_island *next = NULL;
-
-  while (true) {
-    next = (polling_island *)gpr_atm_acq_load(&pi->merged_to);
-    if (next == NULL) {
-      /* Looks like 'pi' is the last node in the linked list but unless we check
-         this by holding the pi->mu lock, we cannot be sure (i.e without the
-         pi->mu lock, we don't prevent island merges).
-         To be absolutely sure, check once more by holding the pi->mu lock */
-      gpr_mu_lock(&pi->mu);
-      next = (polling_island *)gpr_atm_acq_load(&pi->merged_to);
-      if (next == NULL) {
-        /* pi is infact the last node and we have the pi->mu lock. we're done */
-        break;
-      }
-
-      /* pi->merged_to is not NULL i.e pi isn't the last node anymore. pi->mu
-       * isn't the lock we are interested in. Continue traversing the list */
-      gpr_mu_unlock(&pi->mu);
-    }
-
-    pi = next;
-  }
-
-  return pi;
-}
-
-/* Gets the lock on the *latest* polling islands in the linked lists pointed by
-   *p and *q (and also updates *p and *q to point to the latest polling islands)
-
-   This function is needed because calling the following block of code to obtain
-   locks on polling islands (*p and *q) is prone to deadlocks.
-     {
-       polling_island_lock(*p, true);
-       polling_island_lock(*q, true);
-     }
-
-   Usage/example:
-     polling_island *p1;
-     polling_island *p2;
-     ..
-     polling_island_lock_pair(&p1, &p2);
-     ..
-     .. Critical section with both p1 and p2 locked
-     ..
-     // Release locks: Always call polling_island_unlock_pair() to release locks
-     polling_island_unlock_pair(p1, p2);
-*/
-static void polling_island_lock_pair(polling_island **p, polling_island **q) {
-  polling_island *pi_1 = *p;
-  polling_island *pi_2 = *q;
-  polling_island *next_1 = NULL;
-  polling_island *next_2 = NULL;
-
-  /* The algorithm is simple:
-      - Go to the last polling islands in the linked lists *pi_1 and *pi_2 (and
-        keep updating pi_1 and pi_2)
-      - Then obtain locks on the islands by following a lock order rule of
-        locking polling_island with lower address first
-           Special case: Before obtaining the locks, check if pi_1 and pi_2 are
-           pointing to the same island. If that is the case, we can just call
-           polling_island_lock()
-      - After obtaining both the locks, double check that the polling islands
-        are still the last polling islands in their respective linked lists
-        (this is because there might have been polling island merges before
-        we got the lock)
-      - If the polling islands are the last islands, we are done. If not,
-        release the locks and continue the process from the first step */
-  while (true) {
-    next_1 = (polling_island *)gpr_atm_acq_load(&pi_1->merged_to);
-    while (next_1 != NULL) {
-      pi_1 = next_1;
-      next_1 = (polling_island *)gpr_atm_acq_load(&pi_1->merged_to);
-    }
-
-    next_2 = (polling_island *)gpr_atm_acq_load(&pi_2->merged_to);
-    while (next_2 != NULL) {
-      pi_2 = next_2;
-      next_2 = (polling_island *)gpr_atm_acq_load(&pi_2->merged_to);
-    }
-
-    if (pi_1 == pi_2) {
-      pi_1 = pi_2 = polling_island_lock(pi_1);
-      break;
-    }
-
-    if (pi_1 < pi_2) {
-      gpr_mu_lock(&pi_1->mu);
-      gpr_mu_lock(&pi_2->mu);
-    } else {
-      gpr_mu_lock(&pi_2->mu);
-      gpr_mu_lock(&pi_1->mu);
-    }
-
-    next_1 = (polling_island *)gpr_atm_acq_load(&pi_1->merged_to);
-    next_2 = (polling_island *)gpr_atm_acq_load(&pi_2->merged_to);
-    if (next_1 == NULL && next_2 == NULL) {
-      break;
-    }
-
-    gpr_mu_unlock(&pi_1->mu);
-    gpr_mu_unlock(&pi_2->mu);
-  }
-
-  *p = pi_1;
-  *q = pi_2;
-}
-
-static void polling_island_unlock_pair(polling_island *p, polling_island *q) {
-  if (p == q) {
-    gpr_mu_unlock(&p->mu);
-  } else {
-    gpr_mu_unlock(&p->mu);
-    gpr_mu_unlock(&q->mu);
-  }
-}
-
-static polling_island *polling_island_merge(polling_island *p,
-                                            polling_island *q,
-                                            grpc_error **error) {
-  /* Get locks on both the polling islands */
-  polling_island_lock_pair(&p, &q);
-
-  if (p != q) {
-    /* Make sure that p points to the polling island with fewer fds than q */
-    if (p->fd_cnt > q->fd_cnt) {
-      GPR_SWAP(polling_island *, p, q);
-    }
-
-    /* Merge p with q i.e move all the fds from p (The one with fewer fds) to q
-       Note that the refcounts on the fds being moved will not change here.
-       This is why the last param in the following two functions is 'false') */
-    polling_island_add_fds_locked(q, p->fds, p->fd_cnt, false, error);
-    polling_island_remove_all_fds_locked(p, false, error);
-
-    /* Wakeup all the pollers (if any) on p so that they pickup this change */
-    polling_island_add_wakeup_fd_locked(p, &polling_island_wakeup_fd, error);
-
-    /* Add the 'merged_to' link from p --> q */
-    gpr_atm_rel_store(&p->merged_to, (gpr_atm)q);
-    PI_ADD_REF(q, "pi_merge"); /* To account for the new incoming ref from p */
-  }
-  /* else if p == q, nothing needs to be done */
-
-  polling_island_unlock_pair(p, q);
-
-  /* Return the merged polling island (Note that no merge would have happened
-     if p == q which is ok) */
-  return q;
-}
-
-static grpc_error *polling_island_global_init() {
-  grpc_error *error = GRPC_ERROR_NONE;
-
-  error = grpc_wakeup_fd_init(&polling_island_wakeup_fd);
-  if (error == GRPC_ERROR_NONE) {
-    error = grpc_wakeup_fd_wakeup(&polling_island_wakeup_fd);
-  }
-
-  return error;
-}
-
-static void polling_island_global_shutdown() {
-  grpc_wakeup_fd_destroy(&polling_island_wakeup_fd);
-}
-
-/*******************************************************************************
- * Fd Definitions
- */
-
-/* We need to keep a freelist not because of any concerns of malloc performance
- * but instead so that implementations with multiple threads in (for example)
- * epoll_wait deal with the race between pollset removal and incoming poll
- * notifications.
- *
- * The problem is that the poller ultimately holds a reference to this
- * object, so it is very difficult to know when is safe to free it, at least
- * without some expensive synchronization.
- *
- * If we keep the object freelisted, in the worst case losing this race just
- * becomes a spurious read notification on a reused fd.
- */
-
-/* The alarm system needs to be able to wakeup 'some poller' sometimes
- * (specifically when a new alarm needs to be triggered earlier than the next
- * alarm 'epoch'). This wakeup_fd gives us something to alert on when such a
- * case occurs. */
-
-static grpc_fd *fd_freelist = NULL;
-static gpr_mu fd_freelist_mu;
-
-#ifndef NDEBUG
-#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__)
-#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__)
-static void ref_by(grpc_fd *fd, int n, const char *reason, const char *file,
-                   int line) {
-  if (GRPC_TRACER_ON(grpc_trace_fd_refcount)) {
-    gpr_log(GPR_DEBUG,
-            "FD %d %p   ref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
-            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
-            gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line);
-  }
-#else
-#define REF_BY(fd, n, reason) ref_by(fd, n)
-#define UNREF_BY(fd, n, reason) unref_by(fd, n)
-static void ref_by(grpc_fd *fd, int n) {
-#endif
-  GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0);
-}
-
-#ifndef NDEBUG
-static void unref_by(grpc_fd *fd, int n, const char *reason, const char *file,
-                     int line) {
-  if (GRPC_TRACER_ON(grpc_trace_fd_refcount)) {
-    gpr_log(GPR_DEBUG,
-            "FD %d %p unref %d %" PRIdPTR " -> %" PRIdPTR " [%s; %s:%d]",
-            fd->fd, fd, n, gpr_atm_no_barrier_load(&fd->refst),
-            gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line);
-  }
-#else
-static void unref_by(grpc_fd *fd, int n) {
-#endif
-  gpr_atm old = gpr_atm_full_fetch_add(&fd->refst, -n);
-  if (old == n) {
-    /* Add the fd to the freelist */
-    gpr_mu_lock(&fd_freelist_mu);
-    fd->freelist_next = fd_freelist;
-    fd_freelist = fd;
-    grpc_iomgr_unregister_object(&fd->iomgr_object);
-
-    grpc_lfev_destroy(&fd->read_closure);
-    grpc_lfev_destroy(&fd->write_closure);
-
-    gpr_mu_unlock(&fd_freelist_mu);
-  } else {
-    GPR_ASSERT(old > n);
-  }
-}
-
-/* Increment refcount by two to avoid changing the orphan bit */
-#ifndef NDEBUG
-static void fd_ref(grpc_fd *fd, const char *reason, const char *file,
-                   int line) {
-  ref_by(fd, 2, reason, file, line);
-}
-
-static void fd_unref(grpc_fd *fd, const char *reason, const char *file,
-                     int line) {
-  unref_by(fd, 2, reason, file, line);
-}
-#else
-static void fd_ref(grpc_fd *fd) { ref_by(fd, 2); }
-static void fd_unref(grpc_fd *fd) { unref_by(fd, 2); }
-#endif
-
-static void fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); }
-
-static void fd_global_shutdown(void) {
-  gpr_mu_lock(&fd_freelist_mu);
-  gpr_mu_unlock(&fd_freelist_mu);
-  while (fd_freelist != NULL) {
-    grpc_fd *fd = fd_freelist;
-    fd_freelist = fd_freelist->freelist_next;
-    gpr_mu_destroy(&fd->po.mu);
-    gpr_free(fd);
-  }
-  gpr_mu_destroy(&fd_freelist_mu);
-}
-
-static grpc_fd *fd_create(int fd, const char *name) {
-  grpc_fd *new_fd = NULL;
-
-  gpr_mu_lock(&fd_freelist_mu);
-  if (fd_freelist != NULL) {
-    new_fd = fd_freelist;
-    fd_freelist = fd_freelist->freelist_next;
-  }
-  gpr_mu_unlock(&fd_freelist_mu);
-
-  if (new_fd == NULL) {
-    new_fd = gpr_malloc(sizeof(grpc_fd));
-    gpr_mu_init(&new_fd->po.mu);
-  }
-
-  /* Note: It is not really needed to get the new_fd->po.mu lock here. If this
-   * is a newly created fd (or an fd we got from the freelist), no one else
-   * would be holding a lock to it anyway. */
-  gpr_mu_lock(&new_fd->po.mu);
-  new_fd->po.pi = NULL;
-#ifndef NDEBUG
-  new_fd->po.obj_type = POLL_OBJ_FD;
-#endif
-
-  gpr_atm_rel_store(&new_fd->refst, (gpr_atm)1);
-  new_fd->fd = fd;
-  new_fd->orphaned = false;
-  grpc_lfev_init(&new_fd->read_closure);
-  grpc_lfev_init(&new_fd->write_closure);
-  gpr_atm_no_barrier_store(&new_fd->read_notifier_pollset, (gpr_atm)NULL);
-
-  new_fd->freelist_next = NULL;
-  new_fd->on_done_closure = NULL;
-
-  gpr_mu_unlock(&new_fd->po.mu);
-
-  char *fd_name;
-  gpr_asprintf(&fd_name, "%s fd=%d", name, fd);
-  grpc_iomgr_register_object(&new_fd->iomgr_object, fd_name);
-#ifndef NDEBUG
-  if (GRPC_TRACER_ON(grpc_trace_fd_refcount)) {
-    gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, new_fd, fd_name);
-  }
-#endif
-  gpr_free(fd_name);
-  return new_fd;
-}
-
-static int fd_wrapped_fd(grpc_fd *fd) {
-  int ret_fd = -1;
-  gpr_mu_lock(&fd->po.mu);
-  if (!fd->orphaned) {
-    ret_fd = fd->fd;
-  }
-  gpr_mu_unlock(&fd->po.mu);
-
-  return ret_fd;
-}
-
-static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                      grpc_closure *on_done, int *release_fd,
-                      bool already_closed, const char *reason) {
-  grpc_error *error = GRPC_ERROR_NONE;
-  polling_island *unref_pi = NULL;
-
-  gpr_mu_lock(&fd->po.mu);
-  fd->on_done_closure = on_done;
-
-  /* Remove the active status but keep referenced. We want this grpc_fd struct
-     to be alive (and not added to freelist) until the end of this function */
-  REF_BY(fd, 1, reason);
-
-  /* Remove the fd from the polling island:
-     - Get a lock on the latest polling island (i.e the last island in the
-       linked list pointed by fd->po.pi). This is the island that
-       would actually contain the fd
-     - Remove the fd from the latest polling island
-     - Unlock the latest polling island
-     - Set fd->po.pi to NULL (but remove the ref on the polling island
-       before doing this.) */
-  if (fd->po.pi != NULL) {
-    polling_island *pi_latest = polling_island_lock(fd->po.pi);
-    polling_island_remove_fd_locked(pi_latest, fd, already_closed, &error);
-    gpr_mu_unlock(&pi_latest->mu);
-
-    unref_pi = fd->po.pi;
-    fd->po.pi = NULL;
-  }
-
-  /* If release_fd is not NULL, we should be relinquishing control of the file
-     descriptor fd->fd (but we still own the grpc_fd structure). */
-  if (release_fd != NULL) {
-    *release_fd = fd->fd;
-  } else {
-    close(fd->fd);
-  }
-
-  fd->orphaned = true;
-
-  GRPC_CLOSURE_SCHED(exec_ctx, fd->on_done_closure, GRPC_ERROR_REF(error));
-
-  gpr_mu_unlock(&fd->po.mu);
-  UNREF_BY(fd, 2, reason); /* Drop the reference */
-  if (unref_pi != NULL) {
-    /* Unref stale polling island here, outside the fd lock above.
-       The polling island owns a workqueue which owns an fd, and unreffing
-       inside the lock can cause an eventual lock loop that makes TSAN very
-       unhappy. */
-    PI_UNREF(exec_ctx, unref_pi, "fd_orphan");
-  }
-  GRPC_LOG_IF_ERROR("fd_orphan", GRPC_ERROR_REF(error));
-  GRPC_ERROR_UNREF(error);
-}
-
-static grpc_pollset *fd_get_read_notifier_pollset(grpc_exec_ctx *exec_ctx,
-                                                  grpc_fd *fd) {
-  gpr_atm notifier = gpr_atm_acq_load(&fd->read_notifier_pollset);
-  return (grpc_pollset *)notifier;
-}
-
-static bool fd_is_shutdown(grpc_fd *fd) {
-  return grpc_lfev_is_shutdown(&fd->read_closure);
-}
-
-/* Might be called multiple times */
-static void fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_error *why) {
-  if (grpc_lfev_set_shutdown(exec_ctx, &fd->read_closure,
-                             GRPC_ERROR_REF(why))) {
-    shutdown(fd->fd, SHUT_RDWR);
-    grpc_lfev_set_shutdown(exec_ctx, &fd->write_closure, GRPC_ERROR_REF(why));
-  }
-  GRPC_ERROR_UNREF(why);
-}
-
-static void fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                              grpc_closure *closure) {
-  grpc_lfev_notify_on(exec_ctx, &fd->read_closure, closure, "read");
-}
-
-static void fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                               grpc_closure *closure) {
-  grpc_lfev_notify_on(exec_ctx, &fd->write_closure, closure, "write");
-}
-
-/*******************************************************************************
- * Pollset Definitions
- */
-GPR_TLS_DECL(g_current_thread_pollset);
-GPR_TLS_DECL(g_current_thread_worker);
-static __thread bool g_initialized_sigmask;
-static __thread sigset_t g_orig_sigmask;
-static __thread sigset_t g_wakeup_sig_set;
-
-static void sig_handler(int sig_num) {
-#ifdef GRPC_EPOLL_DEBUG
-  gpr_log(GPR_INFO, "Received signal %d", sig_num);
-#endif
-}
-
-static void pollset_worker_init(grpc_pollset_worker *worker) {
-  worker->pt_id = pthread_self();
-  worker->next = worker->prev = NULL;
-  gpr_atm_no_barrier_store(&worker->is_kicked, (gpr_atm)0);
-  gpr_atm_no_barrier_store(&worker->is_polling_turn, (gpr_atm)0);
-  worker_node_init(&worker->pi_list_link);
-}
-
-static void poller_kick_init() { signal(grpc_wakeup_signal, sig_handler); }
-
-/* Global state management */
-static grpc_error *pollset_global_init(void) {
-  gpr_tls_init(&g_current_thread_pollset);
-  gpr_tls_init(&g_current_thread_worker);
-  poller_kick_init();
-  return GRPC_ERROR_NONE;
-}
-
-static void pollset_global_shutdown(void) {
-  gpr_tls_destroy(&g_current_thread_pollset);
-  gpr_tls_destroy(&g_current_thread_worker);
-}
-
-static grpc_error *worker_kick(grpc_pollset_worker *worker,
-                               gpr_atm *is_kicked) {
-  grpc_error *err = GRPC_ERROR_NONE;
-
-  /* Kick the worker only if it was not already kicked */
-  if (gpr_atm_no_barrier_cas(is_kicked, (gpr_atm)0, (gpr_atm)1)) {
-    GRPC_POLLING_TRACE(
-        "pollset_worker_kick: Kicking worker: %p (thread id: %ld)",
-        (void *)worker, (long int)worker->pt_id);
-    int err_num = pthread_kill(worker->pt_id, grpc_wakeup_signal);
-    if (err_num != 0) {
-      err = GRPC_OS_ERROR(err_num, "pthread_kill");
-    }
-  }
-  return err;
-}
-
-static grpc_error *pollset_worker_kick(grpc_pollset_worker *worker) {
-  return worker_kick(worker, &worker->is_kicked);
-}
-
-static grpc_error *poller_kick(grpc_pollset_worker *worker) {
-  return worker_kick(worker, &worker->is_polling_turn);
-}
-
-/* Return 1 if the pollset has active threads in pollset_work (pollset must
- * be locked) */
-static int pollset_has_workers(grpc_pollset *p) {
-  return p->root_worker.next != &p->root_worker;
-}
-
-static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev->next = worker->next;
-  worker->next->prev = worker->prev;
-}
-
-static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
-  if (pollset_has_workers(p)) {
-    grpc_pollset_worker *w = p->root_worker.next;
-    remove_worker(p, w);
-    return w;
-  } else {
-    return NULL;
-  }
-}
-
-static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->next = &p->root_worker;
-  worker->prev = worker->next->prev;
-  worker->prev->next = worker->next->prev = worker;
-}
-
-static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev = &p->root_worker;
-  worker->next = worker->prev->next;
-  worker->prev->next = worker->next->prev = worker;
-}
-
-/* p->mu must be held before calling this function */
-static grpc_error *pollset_kick(grpc_pollset *p,
-                                grpc_pollset_worker *specific_worker) {
-  GPR_TIMER_BEGIN("pollset_kick", 0);
-  grpc_error *error = GRPC_ERROR_NONE;
-  const char *err_desc = "Kick Failure";
-  grpc_pollset_worker *worker = specific_worker;
-  if (worker != NULL) {
-    if (worker == GRPC_POLLSET_KICK_BROADCAST) {
-      if (pollset_has_workers(p)) {
-        GPR_TIMER_BEGIN("pollset_kick.broadcast", 0);
-        for (worker = p->root_worker.next; worker != &p->root_worker;
-             worker = worker->next) {
-          if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) {
-            append_error(&error, pollset_worker_kick(worker), err_desc);
-          }
-        }
-        GPR_TIMER_END("pollset_kick.broadcast", 0);
-      } else {
-        p->kicked_without_pollers = true;
-      }
-    } else {
-      GPR_TIMER_MARK("kicked_specifically", 0);
-      if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) {
-        append_error(&error, pollset_worker_kick(worker), err_desc);
-      }
-    }
-  } else if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)p) {
-    /* Since worker == NULL, it means that we can kick "any" worker on this
-       pollset 'p'. If 'p' happens to be the same pollset this thread is
-       currently polling (i.e in pollset_work() function), then there is no need
-       to kick any other worker since the current thread can just absorb the
-       kick. This is the reason why we enter this case only when
-       g_current_thread_pollset is != p */
-
-    GPR_TIMER_MARK("kick_anonymous", 0);
-    worker = pop_front_worker(p);
-    if (worker != NULL) {
-      GPR_TIMER_MARK("finally_kick", 0);
-      push_back_worker(p, worker);
-      append_error(&error, pollset_worker_kick(worker), err_desc);
-    } else {
-      GPR_TIMER_MARK("kicked_no_pollers", 0);
-      p->kicked_without_pollers = true;
-    }
-  }
-
-  GPR_TIMER_END("pollset_kick", 0);
-  GRPC_LOG_IF_ERROR("pollset_kick", GRPC_ERROR_REF(error));
-  return error;
-}
-
-static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
-  gpr_mu_init(&pollset->po.mu);
-  *mu = &pollset->po.mu;
-  pollset->po.pi = NULL;
-#ifndef NDEBUG
-  pollset->po.obj_type = POLL_OBJ_POLLSET;
-#endif
-
-  pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
-  pollset->kicked_without_pollers = false;
-
-  pollset->shutting_down = false;
-  pollset->finish_shutdown_called = false;
-  pollset->shutdown_done = NULL;
-}
-
-/* Convert millis to timespec (clock-type is assumed to be GPR_TIMESPAN) */
-static struct timespec millis_to_timespec(int millis) {
-  struct timespec linux_ts;
-  gpr_timespec gpr_ts;
-
-  if (millis == -1) {
-    gpr_ts = gpr_inf_future(GPR_TIMESPAN);
-  } else {
-    gpr_ts = gpr_time_from_millis(millis, GPR_TIMESPAN);
-  }
-
-  linux_ts.tv_sec = (time_t)gpr_ts.tv_sec;
-  linux_ts.tv_nsec = gpr_ts.tv_nsec;
-  return linux_ts;
-}
-
-/* Convert a timespec to milliseconds:
-   - Very small or negative poll times are clamped to zero to do a non-blocking
-     poll (which becomes spin polling)
-   - Other small values are rounded up to one millisecond
-   - Longer than a millisecond polls are rounded up to the next nearest
-     millisecond to avoid spinning
-   - Infinite timeouts are converted to -1 */
-static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
-                                           gpr_timespec now) {
-  gpr_timespec timeout;
-  static const int64_t max_spin_polling_us = 10;
-  if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) {
-    return -1;
-  }
-
-  if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
-                                                   max_spin_polling_us,
-                                                   GPR_TIMESPAN))) <= 0) {
-    return 0;
-  }
-  timeout = gpr_time_sub(deadline, now);
-  int millis = gpr_time_to_millis(gpr_time_add(
-      timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
-  return millis >= 1 ? millis : 1;
-}
-
-static void fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                               grpc_pollset *notifier) {
-  grpc_lfev_set_ready(exec_ctx, &fd->read_closure, "read");
-
-  /* Note, it is possible that fd_become_readable might be called twice with
-     different 'notifier's when an fd becomes readable and it is in two epoll
-     sets (This can happen briefly during polling island merges). In such cases
-     it does not really matter which notifer is set as the read_notifier_pollset
-     (They would both point to the same polling island anyway) */
-  /* Use release store to match with acquire load in fd_get_read_notifier */
-  gpr_atm_rel_store(&fd->read_notifier_pollset, (gpr_atm)notifier);
-}
-
-static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  grpc_lfev_set_ready(exec_ctx, &fd->write_closure, "write");
-}
-
-static void pollset_release_polling_island(grpc_exec_ctx *exec_ctx,
-                                           grpc_pollset *ps, char *reason) {
-  if (ps->po.pi != NULL) {
-    PI_UNREF(exec_ctx, ps->po.pi, reason);
-  }
-  ps->po.pi = NULL;
-}
-
-static void finish_shutdown_locked(grpc_exec_ctx *exec_ctx,
-                                   grpc_pollset *pollset) {
-  /* The pollset cannot have any workers if we are at this stage */
-  GPR_ASSERT(!pollset_has_workers(pollset));
-
-  pollset->finish_shutdown_called = true;
-
-  /* Release the ref and set pollset->po.pi to NULL */
-  pollset_release_polling_island(exec_ctx, pollset, "ps_shutdown");
-  GRPC_CLOSURE_SCHED(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE);
-}
-
-/* pollset->po.mu lock must be held by the caller before calling this */
-static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                             grpc_closure *closure) {
-  GPR_TIMER_BEGIN("pollset_shutdown", 0);
-  GPR_ASSERT(!pollset->shutting_down);
-  pollset->shutting_down = true;
-  pollset->shutdown_done = closure;
-  pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
-
-  /* If the pollset has any workers, we cannot call finish_shutdown_locked()
-     because it would release the underlying polling island. In such a case, we
-     let the last worker call finish_shutdown_locked() from pollset_work() */
-  if (!pollset_has_workers(pollset)) {
-    GPR_ASSERT(!pollset->finish_shutdown_called);
-    GPR_TIMER_MARK("pollset_shutdown.finish_shutdown_locked", 0);
-    finish_shutdown_locked(exec_ctx, pollset);
-  }
-  GPR_TIMER_END("pollset_shutdown", 0);
-}
-
-/* pollset_shutdown is guaranteed to be called before pollset_destroy. So other
- * than destroying the mutexes, there is nothing special that needs to be done
- * here */
-static void pollset_destroy(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
-  GPR_ASSERT(!pollset_has_workers(pollset));
-  gpr_mu_destroy(&pollset->po.mu);
-}
-
-/* NOTE: This function may modify 'now' */
-static bool acquire_polling_lease(grpc_pollset_worker *worker,
-                                  polling_island *pi, gpr_timespec deadline,
-                                  gpr_timespec *now) {
-  bool is_lease_acquired = false;
-
-  gpr_mu_lock(&pi->worker_list_mu);  //  LOCK
-  long num_pollers = gpr_atm_no_barrier_load(&pi->poller_count);
-
-  if (num_pollers >= g_max_pollers_per_pi) {
-    push_back_worker_node(&pi->worker_list_head, &worker->pi_list_link);
-    gpr_mu_unlock(&pi->worker_list_mu);  // UNLOCK
-
-    bool is_timeout = false;
-    int ret;
-    int timeout_ms = poll_deadline_to_millis_timeout(deadline, *now);
-    if (timeout_ms == -1) {
-      ret = sigwaitinfo(&g_wakeup_sig_set, NULL);
-    } else {
-      struct timespec sigwait_timeout = millis_to_timespec(timeout_ms);
-      GRPC_SCHEDULING_START_BLOCKING_REGION;
-      ret = sigtimedwait(&g_wakeup_sig_set, NULL, &sigwait_timeout);
-      GRPC_SCHEDULING_END_BLOCKING_REGION;
-    }
-
-    if (ret == -1) {
-      if (errno == EAGAIN) {
-        is_timeout = true;
-      } else {
-        /* NOTE: This should not happen. If we see these log messages, it means
-           we are most likely doing something incorrect in the setup * needed
-           for sigwaitinfo/sigtimedwait */
-        gpr_log(GPR_ERROR,
-                "sigtimedwait failed with retcode: %d (timeout_ms: %d)", errno,
-                timeout_ms);
-      }
-    }
-
-    /* Did the worker come out of sigtimedwait due to a thread that just
-       exited epoll and kicking it (in release_polling_lease function). */
-    bool is_polling_turn = gpr_atm_acq_load(&worker->is_polling_turn);
-
-    /* Did the worker come out of sigtimedwait due to a thread alerting it that
-       some completion event was (likely) available in the completion queue */
-    bool is_kicked = gpr_atm_no_barrier_load(&worker->is_kicked);
-
-    if (is_kicked || is_timeout) {
-      *now = deadline; /* Essentially make the epoll timeout = 0 */
-    } else if (is_polling_turn) {
-      *now = gpr_now(GPR_CLOCK_MONOTONIC); /* Reduce the epoll timeout */
-    }
-
-    gpr_mu_lock(&pi->worker_list_mu);  // LOCK
-    /* The node might have already been removed from the list by the poller
-       that kicked this. However it is safe to call 'remove_worker_node' on
-       an already detached node */
-    remove_worker_node(&worker->pi_list_link);
-    /* It is important to read the num_pollers again under the lock so that we
-     * have the latest num_pollers value that doesn't change while we are doing
-     * the "(num_pollers < g_max_pollers_per_pi)" a a few lines below */
-    num_pollers = gpr_atm_no_barrier_load(&pi->poller_count);
-  }
-
-  if (num_pollers < g_max_pollers_per_pi) {
-    gpr_atm_no_barrier_fetch_add(&pi->poller_count, 1);
-    is_lease_acquired = true;
-  }
-
-  gpr_mu_unlock(&pi->worker_list_mu);  // UNLOCK
-  return is_lease_acquired;
-}
-
-static void release_polling_lease(polling_island *pi, grpc_error **error) {
-  gpr_mu_lock(&pi->worker_list_mu);
-
-  gpr_atm_no_barrier_fetch_add(&pi->poller_count, -1);
-  worker_node *node = pop_front_worker_node(&pi->worker_list_head);
-  if (node != NULL) {
-    grpc_pollset_worker *next_worker = WORKER_FROM_WORKER_LIST_NODE(node);
-    append_error(error, poller_kick(next_worker), "poller kick error");
-  }
-
-  gpr_mu_unlock(&pi->worker_list_mu);
-}
-
-#define GRPC_EPOLL_MAX_EVENTS 100
-static void pollset_do_epoll_pwait(grpc_exec_ctx *exec_ctx, int epoll_fd,
-                                   grpc_pollset *pollset, polling_island *pi,
-                                   grpc_pollset_worker *worker,
-                                   gpr_timespec now, gpr_timespec deadline,
-                                   sigset_t *sig_mask, grpc_error **error) {
-  /* Only g_max_pollers_per_pi threads can be doing polling in parallel.
-     If we cannot get a lease, we cannot continue to do epoll_pwait() */
-  if (!acquire_polling_lease(worker, pi, deadline, &now)) {
-    return;
-  }
-
-  struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS];
-  int ep_rv;
-  char *err_msg;
-  const char *err_desc = "pollset_work_and_unlock";
-
-  /* timeout_ms is the time between 'now' and 'deadline' */
-  int timeout_ms = poll_deadline_to_millis_timeout(deadline, now);
-
-  GRPC_SCHEDULING_START_BLOCKING_REGION;
-  ep_rv =
-      epoll_pwait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, timeout_ms, sig_mask);
-  GRPC_SCHEDULING_END_BLOCKING_REGION;
-
-  /* Give back the lease right away so that some other thread can enter */
-  release_polling_lease(pi, error);
-
-  if (ep_rv < 0) {
-    if (errno != EINTR) {
-      gpr_asprintf(&err_msg,
-                   "epoll_wait() epoll fd: %d failed with error: %d (%s)",
-                   epoll_fd, errno, strerror(errno));
-      append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-    } else {
-      /* We were interrupted. Save an interation by doing a zero timeout
-         epoll_wait to see if there are any other events of interest */
-      GRPC_POLLING_TRACE("pollset_work: pollset: %p, worker: %p received kick",
-                         (void *)pollset, (void *)worker);
-      ep_rv = epoll_wait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0);
-    }
-  }
-
-#ifdef GRPC_TSAN
-  /* See the definition of g_poll_sync for more details */
-  gpr_atm_acq_load(&g_epoll_sync);
-#endif /* defined(GRPC_TSAN) */
-
-  for (int i = 0; i < ep_rv; ++i) {
-    void *data_ptr = ep_ev[i].data.ptr;
-    if (data_ptr == &polling_island_wakeup_fd) {
-      GRPC_POLLING_TRACE(
-          "pollset_work: pollset: %p, worker: %p polling island (epoll_fd: "
-          "%d) got merged",
-          (void *)pollset, (void *)worker, epoll_fd);
-      /* This means that our polling island is merged with a different
-         island. We do not have to do anything here since the subsequent call
-         to the function pollset_work_and_unlock() will pick up the correct
-         epoll_fd */
-    } else {
-      grpc_fd *fd = data_ptr;
-      int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
-      int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
-      int write_ev = ep_ev[i].events & EPOLLOUT;
-      if (read_ev || cancel) {
-        fd_become_readable(exec_ctx, fd, pollset);
-      }
-      if (write_ev || cancel) {
-        fd_become_writable(exec_ctx, fd);
-      }
-    }
-  }
-}
-
-/* Note: sig_mask contains the signal mask to use *during* epoll_wait() */
-static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx,
-                                    grpc_pollset *pollset,
-                                    grpc_pollset_worker *worker,
-                                    gpr_timespec now, gpr_timespec deadline,
-                                    sigset_t *sig_mask, grpc_error **error) {
-  int epoll_fd = -1;
-  polling_island *pi = NULL;
-  GPR_TIMER_BEGIN("pollset_work_and_unlock", 0);
-
-  /* We need to get the epoll_fd to wait on. The epoll_fd is in inside the
-     latest polling island pointed by pollset->po.pi
-
-     Since epoll_fd is immutable, it is safe to read it without a lock on the
-     polling island. There is however a possibility that the polling island from
-     which we got the epoll_fd, got merged with another island in the meantime.
-     This is okay because in such a case, we will wakeup right-away from
-     epoll_pwait() (because any merge will poison the old polling island's epoll
-     set 'polling_island_wakeup_fd') and then pick up the latest polling_island
-     the next time this function - pollset_work_and_unlock()) is called */
-
-  if (pollset->po.pi == NULL) {
-    pollset->po.pi = polling_island_create(exec_ctx, NULL, error);
-    if (pollset->po.pi == NULL) {
-      GPR_TIMER_END("pollset_work_and_unlock", 0);
-      return; /* Fatal error. Cannot continue */
-    }
-
-    PI_ADD_REF(pollset->po.pi, "ps");
-    GRPC_POLLING_TRACE("pollset_work: pollset: %p created new pi: %p",
-                       (void *)pollset, (void *)pollset->po.pi);
-  }
-
-  pi = polling_island_maybe_get_latest(pollset->po.pi);
-  epoll_fd = pi->epoll_fd;
-
-  /* Update the pollset->po.pi since the island being pointed by
-     pollset->po.pi maybe older than the one pointed by pi) */
-  if (pollset->po.pi != pi) {
-    /* Always do PI_ADD_REF before PI_UNREF because PI_UNREF may cause the
-       polling island to be deleted */
-    PI_ADD_REF(pi, "ps");
-    PI_UNREF(exec_ctx, pollset->po.pi, "ps");
-    pollset->po.pi = pi;
-  }
-
-  /* Add an extra ref so that the island does not get destroyed (which means
-     the epoll_fd won't be closed) while we are are doing an epoll_wait() on the
-     epoll_fd */
-  PI_ADD_REF(pi, "ps_work");
-  gpr_mu_unlock(&pollset->po.mu);
-
-  g_current_thread_polling_island = pi;
-  pollset_do_epoll_pwait(exec_ctx, epoll_fd, pollset, pi, worker, now, deadline,
-                         sig_mask, error);
-  g_current_thread_polling_island = NULL;
-
-  GPR_ASSERT(pi != NULL);
-
-  /* Before leaving, release the extra ref we added to the polling island. It
-     is important to use "pi" here (i.e our old copy of pollset->po.pi
-     that we got before releasing the polling island lock). This is because
-     pollset->po.pi pointer might get udpated in other parts of the
-     code when there is an island merge while we are doing epoll_wait() above */
-  PI_UNREF(exec_ctx, pi, "ps_work");
-
-  GPR_TIMER_END("pollset_work_and_unlock", 0);
-}
-
-/* pollset->po.mu lock must be held by the caller before calling this.
-   The function pollset_work() may temporarily release the lock (pollset->po.mu)
-   during the course of its execution but it will always re-acquire the lock and
-   ensure that it is held by the time the function returns */
-static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                                grpc_pollset_worker **worker_hdl,
-                                gpr_timespec now, gpr_timespec deadline) {
-  GPR_TIMER_BEGIN("pollset_work", 0);
-  grpc_error *error = GRPC_ERROR_NONE;
-
-  grpc_pollset_worker worker;
-  pollset_worker_init(&worker);
-
-  if (worker_hdl) *worker_hdl = &worker;
-
-  gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
-  gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
-
-  if (pollset->kicked_without_pollers) {
-    /* If the pollset was kicked without pollers, pretend that the current
-       worker got the kick and skip polling. A kick indicates that there is some
-       work that needs attention like an event on the completion queue or an
-       alarm */
-    GPR_TIMER_MARK("pollset_work.kicked_without_pollers", 0);
-    pollset->kicked_without_pollers = 0;
-  } else if (!pollset->shutting_down) {
-    /* We use the posix-signal with number 'grpc_wakeup_signal' for waking up
-       (i.e 'kicking') a worker in the pollset. A 'kick' is a way to inform the
-       worker that there is some pending work that needs immediate attention
-       (like an event on the completion queue, or a polling island merge that
-       results in a new epoll-fd to wait on) and that the worker should not
-       spend time waiting in epoll_pwait().
-
-       A worker can be kicked anytime from the point it is added to the pollset
-       via push_front_worker() (or push_back_worker()) to the point it is
-       removed via remove_worker().
-       If the worker is kicked before/during it calls epoll_pwait(), it should
-       immediately exit from epoll_wait(). If the worker is kicked after it
-       returns from epoll_wait(), then nothing really needs to be done.
-
-       To accomplish this, we mask 'grpc_wakeup_signal' on this thread at all
-       times *except* when it is in epoll_pwait(). This way, the worker never
-       misses acting on a kick */
-
-    if (!g_initialized_sigmask) {
-      sigemptyset(&g_wakeup_sig_set);
-      sigaddset(&g_wakeup_sig_set, grpc_wakeup_signal);
-      pthread_sigmask(SIG_BLOCK, &g_wakeup_sig_set, &g_orig_sigmask);
-      sigdelset(&g_orig_sigmask, grpc_wakeup_signal);
-      g_initialized_sigmask = true;
-      /* new_mask:       The new thread mask which blocks 'grpc_wakeup_signal'.
-                         This is the mask used at all times *except during
-                         epoll_wait()*"
-         g_orig_sigmask: The thread mask which allows 'grpc_wakeup_signal' and
-                         this is the mask to use *during epoll_wait()*
-
-         The new_mask is set on the worker before it is added to the pollset
-         (i.e before it can be kicked) */
-    }
-
-    push_front_worker(pollset, &worker); /* Add worker to pollset */
-
-    pollset_work_and_unlock(exec_ctx, pollset, &worker, now, deadline,
-                            &g_orig_sigmask, &error);
-    grpc_exec_ctx_flush(exec_ctx);
-
-    gpr_mu_lock(&pollset->po.mu);
-
-    /* Note: There is no need to reset worker.is_kicked to 0 since we are no
-       longer going to use this worker */
-    remove_worker(pollset, &worker);
-  }
-
-  /* If we are the last worker on the pollset (i.e pollset_has_workers() is
-     false at this point) and the pollset is shutting down, we may have to
-     finish the shutdown process by calling finish_shutdown_locked().
-     See pollset_shutdown() for more details.
-
-     Note: Continuing to access pollset here is safe; it is the caller's
-     responsibility to not destroy a pollset when it has outstanding calls to
-     pollset_work() */
-  if (pollset->shutting_down && !pollset_has_workers(pollset) &&
-      !pollset->finish_shutdown_called) {
-    GPR_TIMER_MARK("pollset_work.finish_shutdown_locked", 0);
-    finish_shutdown_locked(exec_ctx, pollset);
-
-    gpr_mu_unlock(&pollset->po.mu);
-    grpc_exec_ctx_flush(exec_ctx);
-    gpr_mu_lock(&pollset->po.mu);
-  }
-
-  if (worker_hdl) *worker_hdl = NULL;
-
-  gpr_tls_set(&g_current_thread_pollset, (intptr_t)0);
-  gpr_tls_set(&g_current_thread_worker, (intptr_t)0);
-
-  GPR_TIMER_END("pollset_work", 0);
-
-  GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
-  return error;
-}
-
-static void add_poll_object(grpc_exec_ctx *exec_ctx, poll_obj *bag,
-                            poll_obj_type bag_type, poll_obj *item,
-                            poll_obj_type item_type) {
-  GPR_TIMER_BEGIN("add_poll_object", 0);
-
-#ifndef NDEBUG
-  GPR_ASSERT(item->obj_type == item_type);
-  GPR_ASSERT(bag->obj_type == bag_type);
-#endif
-
-  grpc_error *error = GRPC_ERROR_NONE;
-  polling_island *pi_new = NULL;
-
-  gpr_mu_lock(&bag->mu);
-  gpr_mu_lock(&item->mu);
-
-retry:
-  /*
-   * 1) If item->pi and bag->pi are both non-NULL and equal, do nothing
-   * 2) If item->pi and bag->pi are both NULL, create a new polling island (with
-   *    a refcount of 2) and point item->pi and bag->pi to the new island
-   * 3) If exactly one of item->pi or bag->pi is NULL, update it to point to
-   *    the other's non-NULL pi
-   * 4) Finally if item->pi and bag-pi are non-NULL and not-equal, merge the
-   *    polling islands and update item->pi and bag->pi to point to the new
-   *    island
-   */
-
-  /* Early out if we are trying to add an 'fd' to a 'bag' but the fd is already
-   * orphaned */
-  if (item_type == POLL_OBJ_FD && (FD_FROM_PO(item))->orphaned) {
-    gpr_mu_unlock(&item->mu);
-    gpr_mu_unlock(&bag->mu);
-    return;
-  }
-
-  if (item->pi == bag->pi) {
-    pi_new = item->pi;
-    if (pi_new == NULL) {
-      /* GPR_ASSERT(item->pi == bag->pi == NULL) */
-
-      /* If we are adding an fd to a bag (i.e pollset or pollset_set), then
-       * we need to do some extra work to make TSAN happy */
-      if (item_type == POLL_OBJ_FD) {
-        /* Unlock before creating a new polling island: the polling island will
-           create a workqueue which creates a file descriptor, and holding an fd
-           lock here can eventually cause a loop to appear to TSAN (making it
-           unhappy). We don't think it's a real loop (there's an epoch point
-           where that loop possibility disappears), but the advantages of
-           keeping TSAN happy outweigh any performance advantage we might have
-           by keeping the lock held. */
-        gpr_mu_unlock(&item->mu);
-        pi_new = polling_island_create(exec_ctx, FD_FROM_PO(item), &error);
-        gpr_mu_lock(&item->mu);
-
-        /* Need to reverify any assumptions made between the initial lock and
-           getting to this branch: if they've changed, we need to throw away our
-           work and figure things out again. */
-        if (item->pi != NULL) {
-          GRPC_POLLING_TRACE(
-              "add_poll_object: Raced creating new polling island. pi_new: %p "
-              "(fd: %d, %s: %p)",
-              (void *)pi_new, FD_FROM_PO(item)->fd, poll_obj_string(bag_type),
-              (void *)bag);
-          /* No need to lock 'pi_new' here since this is a new polling island
-             and no one has a reference to it yet */
-          polling_island_remove_all_fds_locked(pi_new, true, &error);
-
-          /* Ref and unref so that the polling island gets deleted during unref
-           */
-          PI_ADD_REF(pi_new, "dance_of_destruction");
-          PI_UNREF(exec_ctx, pi_new, "dance_of_destruction");
-          goto retry;
-        }
-      } else {
-        pi_new = polling_island_create(exec_ctx, NULL, &error);
-      }
-
-      GRPC_POLLING_TRACE(
-          "add_poll_object: Created new polling island. pi_new: %p (%s: %p, "
-          "%s: %p)",
-          (void *)pi_new, poll_obj_string(item_type), (void *)item,
-          poll_obj_string(bag_type), (void *)bag);
-    } else {
-      GRPC_POLLING_TRACE(
-          "add_poll_object: Same polling island. pi: %p (%s, %s)",
-          (void *)pi_new, poll_obj_string(item_type),
-          poll_obj_string(bag_type));
-    }
-  } else if (item->pi == NULL) {
-    /* GPR_ASSERT(bag->pi != NULL) */
-    /* Make pi_new point to latest pi*/
-    pi_new = polling_island_lock(bag->pi);
-
-    if (item_type == POLL_OBJ_FD) {
-      grpc_fd *fd = FD_FROM_PO(item);
-      polling_island_add_fds_locked(pi_new, &fd, 1, true, &error);
-    }
-
-    gpr_mu_unlock(&pi_new->mu);
-    GRPC_POLLING_TRACE(
-        "add_poll_obj: item->pi was NULL. pi_new: %p (item(%s): %p, "
-        "bag(%s): %p)",
-        (void *)pi_new, poll_obj_string(item_type), (void *)item,
-        poll_obj_string(bag_type), (void *)bag);
-  } else if (bag->pi == NULL) {
-    /* GPR_ASSERT(item->pi != NULL) */
-    /* Make pi_new to point to latest pi */
-    pi_new = polling_island_lock(item->pi);
-    gpr_mu_unlock(&pi_new->mu);
-    GRPC_POLLING_TRACE(
-        "add_poll_obj: bag->pi was NULL. pi_new: %p (item(%s): %p, "
-        "bag(%s): %p)",
-        (void *)pi_new, poll_obj_string(item_type), (void *)item,
-        poll_obj_string(bag_type), (void *)bag);
-  } else {
-    pi_new = polling_island_merge(item->pi, bag->pi, &error);
-    GRPC_POLLING_TRACE(
-        "add_poll_obj: polling islands merged. pi_new: %p (item(%s): %p, "
-        "bag(%s): %p)",
-        (void *)pi_new, poll_obj_string(item_type), (void *)item,
-        poll_obj_string(bag_type), (void *)bag);
-  }
-
-  /* At this point, pi_new is the polling island that both item->pi and bag->pi
-     MUST be pointing to */
-
-  if (item->pi != pi_new) {
-    PI_ADD_REF(pi_new, poll_obj_string(item_type));
-    if (item->pi != NULL) {
-      PI_UNREF(exec_ctx, item->pi, poll_obj_string(item_type));
-    }
-    item->pi = pi_new;
-  }
-
-  if (bag->pi != pi_new) {
-    PI_ADD_REF(pi_new, poll_obj_string(bag_type));
-    if (bag->pi != NULL) {
-      PI_UNREF(exec_ctx, bag->pi, poll_obj_string(bag_type));
-    }
-    bag->pi = pi_new;
-  }
-
-  gpr_mu_unlock(&item->mu);
-  gpr_mu_unlock(&bag->mu);
-
-  GRPC_LOG_IF_ERROR("add_poll_object", error);
-  GPR_TIMER_END("add_poll_object", 0);
-}
-
-static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                           grpc_fd *fd) {
-  add_poll_object(exec_ctx, &pollset->po, POLL_OBJ_POLLSET, &fd->po,
-                  POLL_OBJ_FD);
-}
-
-/*******************************************************************************
- * Pollset-set Definitions
- */
-
-static grpc_pollset_set *pollset_set_create(void) {
-  grpc_pollset_set *pss = gpr_malloc(sizeof(*pss));
-  gpr_mu_init(&pss->po.mu);
-  pss->po.pi = NULL;
-#ifndef NDEBUG
-  pss->po.obj_type = POLL_OBJ_POLLSET_SET;
-#endif
-  return pss;
-}
-
-static void pollset_set_destroy(grpc_exec_ctx *exec_ctx,
-                                grpc_pollset_set *pss) {
-  gpr_mu_destroy(&pss->po.mu);
-
-  if (pss->po.pi != NULL) {
-    PI_UNREF(exec_ctx, pss->po.pi, "pss_destroy");
-  }
-
-  gpr_free(pss);
-}
-
-static void pollset_set_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
-                               grpc_fd *fd) {
-  add_poll_object(exec_ctx, &pss->po, POLL_OBJ_POLLSET_SET, &fd->po,
-                  POLL_OBJ_FD);
-}
-
-static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
-                               grpc_fd *fd) {
-  /* Nothing to do */
-}
-
-static void pollset_set_add_pollset(grpc_exec_ctx *exec_ctx,
-                                    grpc_pollset_set *pss, grpc_pollset *ps) {
-  add_poll_object(exec_ctx, &pss->po, POLL_OBJ_POLLSET_SET, &ps->po,
-                  POLL_OBJ_POLLSET);
-}
-
-static void pollset_set_del_pollset(grpc_exec_ctx *exec_ctx,
-                                    grpc_pollset_set *pss, grpc_pollset *ps) {
-  /* Nothing to do */
-}
-
-static void pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx,
-                                        grpc_pollset_set *bag,
-                                        grpc_pollset_set *item) {
-  add_poll_object(exec_ctx, &bag->po, POLL_OBJ_POLLSET_SET, &item->po,
-                  POLL_OBJ_POLLSET_SET);
-}
-
-static void pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx,
-                                        grpc_pollset_set *bag,
-                                        grpc_pollset_set *item) {
-  /* Nothing to do */
-}
-
-/*******************************************************************************
- * Event engine binding
- */
-
-static void shutdown_engine(void) {
-  fd_global_shutdown();
-  pollset_global_shutdown();
-  polling_island_global_shutdown();
-}
-
-static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
-};
-
-/* It is possible that GLIBC has epoll but the underlying kernel doesn't.
- * Create a dummy epoll_fd to make sure epoll support is available */
-static bool is_epoll_available() {
-  int fd = epoll_create1(EPOLL_CLOEXEC);
-  if (fd < 0) {
-    gpr_log(
-        GPR_ERROR,
-        "epoll_create1 failed with error: %d. Not using epoll polling engine",
-        fd);
-    return false;
-  }
-  close(fd);
-  return true;
-}
-
-/* This is mainly for testing purposes. Checks to see if environment variable
- * GRPC_MAX_POLLERS_PER_PI is set and if so, assigns that value to
- * g_max_pollers_per_pi (any negative value is considered INT_MAX) */
-static void set_max_pollers_per_island() {
-  char *s = gpr_getenv("GRPC_MAX_POLLERS_PER_PI");
-  if (s) {
-    g_max_pollers_per_pi = (int)strtol(s, NULL, 10);
-    if (g_max_pollers_per_pi < 0) {
-      g_max_pollers_per_pi = INT_MAX;
-    }
-  } else {
-    g_max_pollers_per_pi = INT_MAX;
-  }
-
-  gpr_log(GPR_INFO, "Max number of pollers per polling island: %d",
-          g_max_pollers_per_pi);
-}
-
-const grpc_event_engine_vtable *grpc_init_epoll_limited_pollers_linux(
-    bool explicitly_requested) {
-  if (!explicitly_requested) {
-    return NULL;
-  }
-
-  /* If use of signals is disabled, we cannot use epoll engine*/
-  if (is_grpc_wakeup_signal_initialized && grpc_wakeup_signal < 0) {
-    return NULL;
-  }
-
-  if (!grpc_has_wakeup_fd()) {
-    return NULL;
-  }
-
-  if (!is_epoll_available()) {
-    return NULL;
-  }
-
-  if (!is_grpc_wakeup_signal_initialized) {
-    grpc_use_signal(SIGRTMIN + 6);
-  }
-
-  set_max_pollers_per_island();
-
-  fd_global_init();
-
-  if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
-    return NULL;
-  }
-
-  if (!GRPC_LOG_IF_ERROR("polling_island_global_init",
-                         polling_island_global_init())) {
-    return NULL;
-  }
-
-  return &vtable;
-}
-
-#else /* defined(GRPC_LINUX_EPOLL) */
-#if defined(GRPC_POSIX_SOCKET)
-#include "src/core/lib/iomgr/ev_posix.h"
-/* If GRPC_LINUX_EPOLL is not defined, it means epoll is not available. Return
- * NULL */
-const grpc_event_engine_vtable *grpc_init_epoll_limited_pollers_linux(
-    bool explicitly_requested) {
-  return NULL;
-}
-#endif /* defined(GRPC_POSIX_SOCKET) */
-#endif /* !defined(GRPC_LINUX_EPOLL) */
diff --git a/src/core/lib/iomgr/ev_epoll_thread_pool_linux.c b/src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
deleted file mode 100644
index 07c8eadf4f..0000000000
--- a/src/core/lib/iomgr/ev_epoll_thread_pool_linux.c
+++ /dev/null
@@ -1,1182 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include "src/core/lib/iomgr/port.h"
-
-/* This polling engine is only relevant on linux kernels supporting epoll() */
-#ifdef GRPC_LINUX_EPOLL
-
-#include "src/core/lib/iomgr/ev_epoll_thread_pool_linux.h"
-
-#include <assert.h>
-#include <errno.h>
-#include <limits.h>
-#include <poll.h>
-#include <pthread.h>
-#include <string.h>
-#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/cpu.h>
-#include <grpc/support/log.h>
-#include <grpc/support/string_util.h>
-#include <grpc/support/thd.h>
-#include <grpc/support/tls.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/lib/iomgr/ev_posix.h"
-#include "src/core/lib/iomgr/iomgr_internal.h"
-#include "src/core/lib/iomgr/lockfree_event.h"
-#include "src/core/lib/iomgr/timer.h"
-#include "src/core/lib/iomgr/wakeup_fd_posix.h"
-#include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/block_annotate.h"
-
-/* TODO: sreek - Move this to init.c and initialize this like other tracers. */
-#define GRPC_POLLING_TRACE(fmt, ...)        \
-  if (GRPC_TRACER_ON(grpc_polling_trace)) { \
-    gpr_log(GPR_INFO, (fmt), __VA_ARGS__);  \
-  }
-
-/* The alarm system needs to be able to wakeup 'some poller' sometimes
- * (specifically when a new alarm needs to be triggered earlier than the next
- * alarm 'epoch'). This wakeup_fd gives us something to alert on when such a
- * case occurs. */
-
-struct epoll_set;
-
-#define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker *)1)
-
-/*******************************************************************************
- * Fd Declarations
- */
-struct grpc_fd {
-  gpr_mu mu;
-  struct epoll_set *eps;
-
-  int fd;
-
-  /* The fd is either closed or we relinquished control of it. In either cases,
-     this indicates that the 'fd' on this structure is no longer valid */
-  bool orphaned;
-
-  gpr_atm read_closure;
-  gpr_atm write_closure;
-
-  struct grpc_fd *freelist_next;
-  grpc_closure *on_done_closure;
-
-  grpc_iomgr_object iomgr_object;
-};
-
-static void fd_global_init(void);
-static void fd_global_shutdown(void);
-
-/*******************************************************************************
- * epoll set Declarations
- */
-
-#ifndef NDEBUG
-
-#define EPS_ADD_REF(p, r) eps_add_ref_dbg((p), (r), __FILE__, __LINE__)
-#define EPS_UNREF(exec_ctx, p, r) \
-  eps_unref_dbg((exec_ctx), (p), (r), __FILE__, __LINE__)
-
-#else
-
-#define EPS_ADD_REF(p, r) eps_add_ref((p))
-#define EPS_UNREF(exec_ctx, p, r) eps_unref((exec_ctx), (p))
-
-#endif
-
-typedef struct epoll_set {
-  /* Mutex poller should acquire to poll this. This enforces that only one
-   * poller can be polling on epoll_set at any time */
-  gpr_mu mu;
-
-  /* Ref count. Use EPS_ADD_REF() and EPS_UNREF() macros to increment/decrement
-     the refcount. Once the ref count becomes zero, this structure is destroyed
-     which means we should ensure that there is never a scenario where a
-     EPS_ADD_REF() is racing with a EPS_UNREF() that just made the ref_count
-     zero. */
-  gpr_atm ref_count;
-
-  /* Number of threads currently polling on this epoll set*/
-  gpr_atm poller_count;
-
-  /* Is the epoll set shutdown */
-  gpr_atm is_shutdown;
-
-  /* The fd of the underlying epoll set */
-  int epoll_fd;
-} epoll_set;
-
-/*******************************************************************************
- * Pollset Declarations
- */
-struct grpc_pollset_worker {
-  gpr_cv kick_cv;
-
-  struct grpc_pollset_worker *next;
-  struct grpc_pollset_worker *prev;
-};
-
-struct grpc_pollset {
-  gpr_mu mu;
-  struct epoll_set *eps;
-
-  grpc_pollset_worker root_worker;
-  bool kicked_without_pollers;
-
-  bool shutting_down;          /* Is the pollset shutting down ? */
-  bool finish_shutdown_called; /* Is the 'finish_shutdown_locked()' called ? */
-  grpc_closure *shutdown_done; /* Called after after shutdown is complete */
-};
-
-/*******************************************************************************
- * Pollset-set Declarations
- */
-struct grpc_pollset_set {
-  char unused;
-};
-
-/*****************************************************************************
- * Dedicated polling threads and pollsets - Declarations
- */
-
-size_t g_num_eps = 1;
-struct epoll_set **g_epoll_sets = NULL;
-gpr_atm g_next_eps;
-size_t g_num_threads_per_eps = 1;
-gpr_thd_id *g_poller_threads = NULL;
-
-/* Used as read-notifier pollsets for fds. We won't be using read notifier
- * pollsets with this polling engine. So it does not matter what pollset we
- * return */
-grpc_pollset g_read_notifier;
-
-static void add_fd_to_eps(grpc_fd *fd);
-static bool init_epoll_sets();
-static void shutdown_epoll_sets();
-static void poller_thread_loop(void *arg);
-static void start_poller_threads();
-static void shutdown_poller_threads();
-
-/*******************************************************************************
- * Common helpers
- */
-
-static bool append_error(grpc_error **composite, grpc_error *error,
-                         const char *desc) {
-  if (error == GRPC_ERROR_NONE) return true;
-  if (*composite == GRPC_ERROR_NONE) {
-    *composite = GRPC_ERROR_CREATE_FROM_COPIED_STRING(desc);
-  }
-  *composite = grpc_error_add_child(*composite, error);
-  return false;
-}
-
-/*******************************************************************************
- * epoll set Definitions
- */
-
-/* The wakeup fd that is used to wake up all threads in an epoll_set informing
-   that the epoll set is shutdown.  This wakeup fd initialized to be readable
-   and MUST NOT be consumed i.e the threads that woke up MUST NOT call
-   grpc_wakeup_fd_consume_wakeup() */
-static grpc_wakeup_fd epoll_set_wakeup_fd;
-
-/* The epoll set being polled right now.
-   See comments in workqueue_maybe_wakeup for why this is tracked. */
-static __thread epoll_set *g_current_thread_epoll_set;
-
-/* Forward declaration */
-static void epoll_set_delete(epoll_set *eps);
-
-#ifdef GRPC_TSAN
-/* Currently TSAN may incorrectly flag data races between epoll_ctl and
-   epoll_wait for any grpc_fd structs that are added to the epoll set via
-   epoll_ctl and are returned (within a very short window) via epoll_wait().
-
-   To work-around this race, we establish a happens-before relation between
-   the code just-before epoll_ctl() and the code after epoll_wait() by using
-   this atomic */
-gpr_atm g_epoll_sync;
-#endif /* defined(GRPC_TSAN) */
-
-static void eps_add_ref(epoll_set *eps);
-static void eps_unref(grpc_exec_ctx *exec_ctx, epoll_set *eps);
-
-#ifndef NDEBUG
-static void eps_add_ref_dbg(epoll_set *eps, const char *reason,
-                            const char *file, int line) {
-  if (GRPC_TRACER_ON(grpc_polling_trace)) {
-    gpr_atm old_cnt = gpr_atm_acq_load(&eps->ref_count);
-    gpr_log(GPR_DEBUG, "Add ref eps: %p, old:%" PRIdPTR " -> new:%" PRIdPTR
-                       " (%s) - (%s, %d)",
-            eps, old_cnt, old_cnt + 1, reason, file, line);
-  }
-  eps_add_ref(eps);
-}
-
-static void eps_unref_dbg(grpc_exec_ctx *exec_ctx, epoll_set *eps,
-                          const char *reason, const char *file, int line) {
-  if (GRPC_TRACER_ON(grpc_polling_trace)) {
-    gpr_atm old_cnt = gpr_atm_acq_load(&eps->ref_count);
-    gpr_log(GPR_DEBUG, "Unref eps: %p, old:%" PRIdPTR " -> new:%" PRIdPTR
-                       " (%s) - (%s, %d)",
-            eps, old_cnt, (old_cnt - 1), reason, file, line);
-  }
-  eps_unref(exec_ctx, eps);
-}
-#endif
-
-static void eps_add_ref(epoll_set *eps) {
-  gpr_atm_no_barrier_fetch_add(&eps->ref_count, 1);
-}
-
-static void eps_unref(grpc_exec_ctx *exec_ctx, epoll_set *eps) {
-  /* If ref count went to zero, delete the epoll set. This deletion is
-     not done under a lock since once the ref count goes to zero, we are
-     guaranteed that no one else holds a reference to the epoll set (and
-     that there is no racing eps_add_ref() call either).*/
-  if (1 == gpr_atm_full_fetch_add(&eps->ref_count, -1)) {
-    epoll_set_delete(eps);
-  }
-}
-
-static void epoll_set_add_fd_locked(epoll_set *eps, grpc_fd *fd,
-                                    grpc_error **error) {
-  int err;
-  struct epoll_event ev;
-  char *err_msg;
-  const char *err_desc = "epoll_set_add_fd_locked";
-
-#ifdef GRPC_TSAN
-  /* See the definition of g_epoll_sync for more context */
-  gpr_atm_rel_store(&g_epoll_sync, (gpr_atm)0);
-#endif /* defined(GRPC_TSAN) */
-
-  ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
-  ev.data.ptr = fd;
-  err = epoll_ctl(eps->epoll_fd, EPOLL_CTL_ADD, fd->fd, &ev);
-  if (err < 0 && errno != EEXIST) {
-    gpr_asprintf(
-        &err_msg,
-        "epoll_ctl (epoll_fd: %d) add fd: %d failed with error: %d (%s)",
-        eps->epoll_fd, fd->fd, errno, strerror(errno));
-    append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-    gpr_free(err_msg);
-  }
-}
-
-static void epoll_set_add_wakeup_fd_locked(epoll_set *eps,
-                                           grpc_wakeup_fd *wakeup_fd,
-                                           grpc_error **error) {
-  struct epoll_event ev;
-  int err;
-  char *err_msg;
-  const char *err_desc = "epoll_set_add_wakeup_fd";
-
-  ev.events = (uint32_t)(EPOLLIN | EPOLLET);
-  ev.data.ptr = wakeup_fd;
-  err = epoll_ctl(eps->epoll_fd, EPOLL_CTL_ADD,
-                  GRPC_WAKEUP_FD_GET_READ_FD(wakeup_fd), &ev);
-  if (err < 0 && errno != EEXIST) {
-    gpr_asprintf(&err_msg,
-                 "epoll_ctl (epoll_fd: %d) add wakeup fd: %d failed with "
-                 "error: %d (%s)",
-                 eps->epoll_fd, GRPC_WAKEUP_FD_GET_READ_FD(wakeup_fd), errno,
-                 strerror(errno));
-    append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-    gpr_free(err_msg);
-  }
-}
-
-static void epoll_set_remove_fd(epoll_set *eps, grpc_fd *fd, bool is_fd_closed,
-                                grpc_error **error) {
-  int err;
-  char *err_msg;
-  const char *err_desc = "epoll_set_remove_fd";
-
-  /* If fd is already closed, then it would have been automatically been removed
-     from the epoll set */
-  if (!is_fd_closed) {
-    err = epoll_ctl(eps->epoll_fd, EPOLL_CTL_DEL, fd->fd, NULL);
-    if (err < 0 && errno != ENOENT) {
-      gpr_asprintf(
-          &err_msg,
-          "epoll_ctl (epoll_fd: %d) del fd: %d failed with error: %d (%s)",
-          eps->epoll_fd, fd->fd, errno, strerror(errno));
-      append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-      gpr_free(err_msg);
-    }
-  }
-}
-
-/* Might return NULL in case of an error */
-static epoll_set *epoll_set_create(grpc_error **error) {
-  epoll_set *eps = NULL;
-  const char *err_desc = "epoll_set_create";
-
-  *error = GRPC_ERROR_NONE;
-
-  eps = gpr_malloc(sizeof(*eps));
-  eps->epoll_fd = -1;
-
-  gpr_mu_init(&eps->mu);
-
-  gpr_atm_rel_store(&eps->ref_count, 0);
-  gpr_atm_rel_store(&eps->poller_count, 0);
-
-  gpr_atm_rel_store(&eps->is_shutdown, false);
-
-  eps->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
-
-  if (eps->epoll_fd < 0) {
-    append_error(error, GRPC_OS_ERROR(errno, "epoll_create1"), err_desc);
-    goto done;
-  }
-
-done:
-  if (*error != GRPC_ERROR_NONE) {
-    epoll_set_delete(eps);
-    eps = NULL;
-  }
-  return eps;
-}
-
-static void epoll_set_delete(epoll_set *eps) {
-  if (eps->epoll_fd >= 0) {
-    close(eps->epoll_fd);
-  }
-
-  gpr_mu_destroy(&eps->mu);
-
-  gpr_free(eps);
-}
-
-static grpc_error *epoll_set_global_init() {
-  grpc_error *error = GRPC_ERROR_NONE;
-
-  error = grpc_wakeup_fd_init(&epoll_set_wakeup_fd);
-  if (error == GRPC_ERROR_NONE) {
-    error = grpc_wakeup_fd_wakeup(&epoll_set_wakeup_fd);
-  }
-
-  return error;
-}
-
-static void epoll_set_global_shutdown() {
-  grpc_wakeup_fd_destroy(&epoll_set_wakeup_fd);
-}
-
-/*******************************************************************************
- * Fd Definitions
- */
-
-/* We need to keep a freelist not because of any concerns of malloc performance
- * but instead so that implementations with multiple threads in (for example)
- * epoll_wait deal with the race between pollset removal and incoming poll
- * notifications.
- *
- * The problem is that the poller ultimately holds a reference to this
- * object, so it is very difficult to know when is safe to free it, at least
- * without some expensive synchronization.
- *
- * If we keep the object freelisted, in the worst case losing this race just
- * becomes a spurious read notification on a reused fd.
- */
-
-static grpc_fd *fd_freelist = NULL;
-static gpr_mu fd_freelist_mu;
-
-static grpc_fd *get_fd_from_freelist() {
-  grpc_fd *new_fd = NULL;
-
-  gpr_mu_lock(&fd_freelist_mu);
-  if (fd_freelist != NULL) {
-    new_fd = fd_freelist;
-    fd_freelist = fd_freelist->freelist_next;
-  }
-  gpr_mu_unlock(&fd_freelist_mu);
-  return new_fd;
-}
-
-static void add_fd_to_freelist(grpc_fd *fd) {
-  gpr_mu_lock(&fd_freelist_mu);
-  fd->freelist_next = fd_freelist;
-  fd_freelist = fd;
-  grpc_iomgr_unregister_object(&fd->iomgr_object);
-
-  grpc_lfev_destroy(&fd->read_closure);
-  grpc_lfev_destroy(&fd->write_closure);
-
-  gpr_mu_unlock(&fd_freelist_mu);
-}
-
-static void fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); }
-
-static void fd_global_shutdown(void) {
-  gpr_mu_lock(&fd_freelist_mu);
-  gpr_mu_unlock(&fd_freelist_mu);
-  while (fd_freelist != NULL) {
-    grpc_fd *fd = fd_freelist;
-    fd_freelist = fd_freelist->freelist_next;
-    gpr_mu_destroy(&fd->mu);
-    gpr_free(fd);
-  }
-  gpr_mu_destroy(&fd_freelist_mu);
-}
-
-static grpc_fd *fd_create(int fd, const char *name) {
-  grpc_fd *new_fd = get_fd_from_freelist();
-  if (new_fd == NULL) {
-    new_fd = gpr_malloc(sizeof(grpc_fd));
-    gpr_mu_init(&new_fd->mu);
-  }
-
-  /* Note: It is not really needed to get the new_fd->mu lock here. If this
-   * is a newly created fd (or an fd we got from the freelist), no one else
-   * would be holding a lock to it anyway. */
-  gpr_mu_lock(&new_fd->mu);
-  new_fd->eps = NULL;
-
-  new_fd->fd = fd;
-  new_fd->orphaned = false;
-  grpc_lfev_init(&new_fd->read_closure);
-  grpc_lfev_init(&new_fd->write_closure);
-
-  new_fd->freelist_next = NULL;
-  new_fd->on_done_closure = NULL;
-
-  gpr_mu_unlock(&new_fd->mu);
-
-  char *fd_name;
-  gpr_asprintf(&fd_name, "%s fd=%d", name, fd);
-  grpc_iomgr_register_object(&new_fd->iomgr_object, fd_name);
-  gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, (void *)new_fd, fd_name);
-  gpr_free(fd_name);
-
-  /* Associate the fd with one of the eps */
-  add_fd_to_eps(new_fd);
-  return new_fd;
-}
-
-static int fd_wrapped_fd(grpc_fd *fd) {
-  int ret_fd = -1;
-  gpr_mu_lock(&fd->mu);
-  if (!fd->orphaned) {
-    ret_fd = fd->fd;
-  }
-  gpr_mu_unlock(&fd->mu);
-
-  return ret_fd;
-}
-
-static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                      grpc_closure *on_done, int *release_fd,
-                      bool already_closed, const char *reason) {
-  bool is_fd_closed = already_closed;
-  grpc_error *error = GRPC_ERROR_NONE;
-  epoll_set *unref_eps = NULL;
-
-  gpr_mu_lock(&fd->mu);
-  fd->on_done_closure = on_done;
-
-  /* If release_fd is not NULL, we should be relinquishing control of the file
-     descriptor fd->fd (but we still own the grpc_fd structure). */
-  if (release_fd != NULL) {
-    *release_fd = fd->fd;
-  } else if (!is_fd_closed) {
-    close(fd->fd);
-    is_fd_closed = true;
-  }
-
-  fd->orphaned = true;
-
-  /* Remove the fd from the epoll set */
-  if (fd->eps != NULL) {
-    epoll_set_remove_fd(fd->eps, fd, is_fd_closed, &error);
-    unref_eps = fd->eps;
-    fd->eps = NULL;
-  }
-
-  GRPC_CLOSURE_SCHED(exec_ctx, fd->on_done_closure, GRPC_ERROR_REF(error));
-
-  gpr_mu_unlock(&fd->mu);
-
-  /* We are done with this fd. Release it (i.e add back to freelist) */
-  add_fd_to_freelist(fd);
-
-  if (unref_eps != NULL) {
-    /* Unref stale epoll set here, outside the fd lock above.
-       The epoll set owns a workqueue which owns an fd, and unreffing
-       inside the lock can cause an eventual lock loop that makes TSAN very
-       unhappy. */
-    EPS_UNREF(exec_ctx, unref_eps, "fd_orphan");
-  }
-  GRPC_LOG_IF_ERROR("fd_orphan", GRPC_ERROR_REF(error));
-  GRPC_ERROR_UNREF(error);
-}
-
-/* This polling engine doesn't really need the read notifier functionality. So
- * it just returns a dummy read notifier pollset */
-static grpc_pollset *fd_get_read_notifier_pollset(grpc_exec_ctx *exec_ctx,
-                                                  grpc_fd *fd) {
-  return &g_read_notifier;
-}
-
-static bool fd_is_shutdown(grpc_fd *fd) {
-  return grpc_lfev_is_shutdown(&fd->read_closure);
-}
-
-/* Might be called multiple times */
-static void fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_error *why) {
-  if (grpc_lfev_set_shutdown(exec_ctx, &fd->read_closure,
-                             GRPC_ERROR_REF(why))) {
-    shutdown(fd->fd, SHUT_RDWR);
-    grpc_lfev_set_shutdown(exec_ctx, &fd->write_closure, GRPC_ERROR_REF(why));
-  }
-  GRPC_ERROR_UNREF(why);
-}
-
-static void fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                              grpc_closure *closure) {
-  grpc_lfev_notify_on(exec_ctx, &fd->read_closure, closure, "read");
-}
-
-static void fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
-                               grpc_closure *closure) {
-  grpc_lfev_notify_on(exec_ctx, &fd->write_closure, closure, "write");
-}
-
-/*******************************************************************************
- * Pollset Definitions
- */
-/* TODO: sreek - Not needed anymore */
-GPR_TLS_DECL(g_current_thread_pollset);
-GPR_TLS_DECL(g_current_thread_worker);
-
-static void pollset_worker_init(grpc_pollset_worker *worker) {
-  worker->next = worker->prev = NULL;
-  gpr_cv_init(&worker->kick_cv);
-}
-
-/* Global state management */
-static grpc_error *pollset_global_init(void) {
-  gpr_tls_init(&g_current_thread_pollset);
-  gpr_tls_init(&g_current_thread_worker);
-  return GRPC_ERROR_NONE;
-}
-
-static void pollset_global_shutdown(void) {
-  gpr_tls_destroy(&g_current_thread_pollset);
-  gpr_tls_destroy(&g_current_thread_worker);
-}
-
-static grpc_error *pollset_worker_kick(grpc_pollset_worker *worker) {
-  gpr_cv_signal(&worker->kick_cv);
-  return GRPC_ERROR_NONE;
-}
-
-/* Return 1 if the pollset has active threads in pollset_work (pollset must
- * be locked) */
-static int pollset_has_workers(grpc_pollset *p) {
-  return p->root_worker.next != &p->root_worker;
-}
-
-static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev->next = worker->next;
-  worker->next->prev = worker->prev;
-}
-
-static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
-  if (pollset_has_workers(p)) {
-    grpc_pollset_worker *w = p->root_worker.next;
-    remove_worker(p, w);
-    return w;
-  } else {
-    return NULL;
-  }
-}
-
-static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->next = &p->root_worker;
-  worker->prev = worker->next->prev;
-  worker->prev->next = worker->next->prev = worker;
-}
-
-static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
-  worker->prev = &p->root_worker;
-  worker->next = worker->prev->next;
-  worker->prev->next = worker->next->prev = worker;
-}
-
-/* p->mu must be held before calling this function */
-static grpc_error *pollset_kick(grpc_pollset *p,
-                                grpc_pollset_worker *specific_worker) {
-  GPR_TIMER_BEGIN("pollset_kick", 0);
-  grpc_error *error = GRPC_ERROR_NONE;
-  const char *err_desc = "Kick Failure";
-  grpc_pollset_worker *worker = specific_worker;
-  if (worker != NULL) {
-    if (worker == GRPC_POLLSET_KICK_BROADCAST) {
-      if (pollset_has_workers(p)) {
-        GPR_TIMER_BEGIN("pollset_kick.broadcast", 0);
-        for (worker = p->root_worker.next; worker != &p->root_worker;
-             worker = worker->next) {
-          if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) {
-            append_error(&error, pollset_worker_kick(worker), err_desc);
-          }
-        }
-        GPR_TIMER_END("pollset_kick.broadcast", 0);
-      } else {
-        p->kicked_without_pollers = true;
-      }
-    } else {
-      GPR_TIMER_MARK("kicked_specifically", 0);
-      if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) {
-        append_error(&error, pollset_worker_kick(worker), err_desc);
-      }
-    }
-  } else if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)p) {
-    /* Since worker == NULL, it means that we can kick "any" worker on this
-       pollset 'p'. If 'p' happens to be the same pollset this thread is
-       currently polling (i.e in pollset_work() function), then there is no need
-       to kick any other worker since the current thread can just absorb the
-       kick. This is the reason why we enter this case only when
-       g_current_thread_pollset is != p */
-
-    GPR_TIMER_MARK("kick_anonymous", 0);
-    worker = pop_front_worker(p);
-    if (worker != NULL) {
-      GPR_TIMER_MARK("finally_kick", 0);
-      push_back_worker(p, worker);
-      append_error(&error, pollset_worker_kick(worker), err_desc);
-    } else {
-      GPR_TIMER_MARK("kicked_no_pollers", 0);
-      p->kicked_without_pollers = true;
-    }
-  }
-
-  GPR_TIMER_END("pollset_kick", 0);
-  GRPC_LOG_IF_ERROR("pollset_kick", GRPC_ERROR_REF(error));
-  return error;
-}
-
-static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
-  gpr_mu_init(&pollset->mu);
-  *mu = &pollset->mu;
-  pollset->eps = NULL;
-
-  pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
-  pollset->kicked_without_pollers = false;
-
-  pollset->shutting_down = false;
-  pollset->finish_shutdown_called = false;
-  pollset->shutdown_done = NULL;
-}
-
-static void fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  grpc_lfev_set_ready(exec_ctx, &fd->read_closure, "read");
-}
-
-static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
-  grpc_lfev_set_ready(exec_ctx, &fd->write_closure, "write");
-}
-
-static void pollset_release_epoll_set(grpc_exec_ctx *exec_ctx, grpc_pollset *ps,
-                                      char *reason) {
-  if (ps->eps != NULL) {
-    EPS_UNREF(exec_ctx, ps->eps, reason);
-  }
-  ps->eps = NULL;
-}
-
-static void finish_shutdown_locked(grpc_exec_ctx *exec_ctx,
-                                   grpc_pollset *pollset) {
-  /* The pollset cannot have any workers if we are at this stage */
-  GPR_ASSERT(!pollset_has_workers(pollset));
-
-  pollset->finish_shutdown_called = true;
-
-  /* Release the ref and set pollset->eps to NULL */
-  pollset_release_epoll_set(exec_ctx, pollset, "ps_shutdown");
-  GRPC_CLOSURE_SCHED(exec_ctx, pollset->shutdown_done, GRPC_ERROR_NONE);
-}
-
-/* pollset->mu lock must be held by the caller before calling this */
-static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                             grpc_closure *closure) {
-  GPR_TIMER_BEGIN("pollset_shutdown", 0);
-  GPR_ASSERT(!pollset->shutting_down);
-  pollset->shutting_down = true;
-  pollset->shutdown_done = closure;
-  pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
-
-  /* If the pollset has any workers, we cannot call finish_shutdown_locked()
-     because it would release the underlying epoll set. In such a case, we
-     let the last worker call finish_shutdown_locked() from pollset_work() */
-  if (!pollset_has_workers(pollset)) {
-    GPR_ASSERT(!pollset->finish_shutdown_called);
-    GPR_TIMER_MARK("pollset_shutdown.finish_shutdown_locked", 0);
-    finish_shutdown_locked(exec_ctx, pollset);
-  }
-  GPR_TIMER_END("pollset_shutdown", 0);
-}
-
-/* pollset_shutdown is guaranteed to be called before pollset_destroy. So other
- * than destroying the mutexes, there is nothing special that needs to be done
- * here */
-static void pollset_destroy(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
-  GPR_ASSERT(!pollset_has_workers(pollset));
-  gpr_mu_destroy(&pollset->mu);
-}
-
-/* Blocking call */
-static void acquire_epoll_lease(epoll_set *eps) {
-  if (g_num_threads_per_eps > 1) {
-    gpr_mu_lock(&eps->mu);
-  }
-}
-
-static void release_epoll_lease(epoll_set *eps) {
-  if (g_num_threads_per_eps > 1) {
-    gpr_mu_unlock(&eps->mu);
-  }
-}
-
-#define GRPC_EPOLL_MAX_EVENTS 100
-static void do_epoll_wait(grpc_exec_ctx *exec_ctx, int epoll_fd, epoll_set *eps,
-                          grpc_error **error) {
-  struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS];
-  int ep_rv;
-  char *err_msg;
-  const char *err_desc = "do_epoll_wait";
-
-  int timeout_ms = -1;
-
-  GRPC_SCHEDULING_START_BLOCKING_REGION;
-  acquire_epoll_lease(eps);
-  ep_rv = epoll_wait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, timeout_ms);
-  release_epoll_lease(eps);
-  GRPC_SCHEDULING_END_BLOCKING_REGION;
-
-  if (ep_rv < 0) {
-    gpr_asprintf(&err_msg,
-                 "epoll_wait() epoll fd: %d failed with error: %d (%s)",
-                 epoll_fd, errno, strerror(errno));
-    append_error(error, GRPC_OS_ERROR(errno, err_msg), err_desc);
-  }
-
-#ifdef GRPC_TSAN
-  /* See the definition of g_poll_sync for more details */
-  gpr_atm_acq_load(&g_epoll_sync);
-#endif /* defined(GRPC_TSAN) */
-
-  for (int i = 0; i < ep_rv; ++i) {
-    void *data_ptr = ep_ev[i].data.ptr;
-    if (data_ptr == &epoll_set_wakeup_fd) {
-      gpr_atm_rel_store(&eps->is_shutdown, 1);
-      gpr_log(GPR_INFO, "pollset poller: shutdown set");
-    } else {
-      grpc_fd *fd = data_ptr;
-      int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
-      int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
-      int write_ev = ep_ev[i].events & EPOLLOUT;
-      if (read_ev || cancel) {
-        fd_become_readable(exec_ctx, fd);
-      }
-      if (write_ev || cancel) {
-        fd_become_writable(exec_ctx, fd);
-      }
-    }
-  }
-}
-
-static void epoll_set_work(grpc_exec_ctx *exec_ctx, epoll_set *eps,
-                           grpc_error **error) {
-  int epoll_fd = -1;
-  GPR_TIMER_BEGIN("epoll_set_work", 0);
-
-  /* Since epoll_fd is immutable, it is safe to read it without a lock on the
-     epoll set. */
-  epoll_fd = eps->epoll_fd;
-
-  gpr_atm_no_barrier_fetch_add(&eps->poller_count, 1);
-  g_current_thread_epoll_set = eps;
-
-  do_epoll_wait(exec_ctx, epoll_fd, eps, error);
-
-  g_current_thread_epoll_set = NULL;
-  gpr_atm_no_barrier_fetch_add(&eps->poller_count, -1);
-
-  GPR_TIMER_END("epoll_set_work", 0);
-}
-
-/* pollset->mu lock must be held by the caller before calling this.
-   The function pollset_work() may temporarily release the lock (pollset->mu)
-   during the course of its execution but it will always re-acquire the lock and
-   ensure that it is held by the time the function returns */
-static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                                grpc_pollset_worker **worker_hdl,
-                                gpr_timespec now, gpr_timespec deadline) {
-  GPR_TIMER_BEGIN("pollset_work", 0);
-  grpc_error *error = GRPC_ERROR_NONE;
-
-  grpc_pollset_worker worker;
-  pollset_worker_init(&worker);
-
-  if (worker_hdl) *worker_hdl = &worker;
-
-  gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
-  gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
-
-  if (pollset->kicked_without_pollers) {
-    /* If the pollset was kicked without pollers, pretend that the current
-       worker got the kick and skip polling. A kick indicates that there is some
-       work that needs attention like an event on the completion queue or an
-       alarm */
-    GPR_TIMER_MARK("pollset_work.kicked_without_pollers", 0);
-    pollset->kicked_without_pollers = 0;
-  } else if (!pollset->shutting_down) {
-    push_front_worker(pollset, &worker);
-
-    gpr_cv_wait(&worker.kick_cv, &pollset->mu,
-                gpr_convert_clock_type(deadline, GPR_CLOCK_REALTIME));
-    /* pollset->mu locked here */
-
-    remove_worker(pollset, &worker);
-  }
-
-  /* If we are the last worker on the pollset (i.e pollset_has_workers() is
-     false at this point) and the pollset is shutting down, we may have to
-     finish the shutdown process by calling finish_shutdown_locked().
-     See pollset_shutdown() for more details.
-
-     Note: Continuing to access pollset here is safe; it is the caller's
-     responsibility to not destroy a pollset when it has outstanding calls to
-     pollset_work() */
-  if (pollset->shutting_down && !pollset_has_workers(pollset) &&
-      !pollset->finish_shutdown_called) {
-    GPR_TIMER_MARK("pollset_work.finish_shutdown_locked", 0);
-    finish_shutdown_locked(exec_ctx, pollset);
-
-    gpr_mu_unlock(&pollset->mu);
-    grpc_exec_ctx_flush(exec_ctx);
-    gpr_mu_lock(&pollset->mu);
-  }
-
-  if (worker_hdl) *worker_hdl = NULL;
-
-  gpr_tls_set(&g_current_thread_pollset, (intptr_t)0);
-  gpr_tls_set(&g_current_thread_worker, (intptr_t)0);
-
-  GPR_TIMER_END("pollset_work", 0);
-
-  GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
-  return error;
-}
-
-static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
-                           grpc_fd *fd) {
-  /* Nothing to do */
-}
-
-/*******************************************************************************
- * Pollset-set Definitions
- */
-grpc_pollset_set g_dummy_pollset_set;
-static grpc_pollset_set *pollset_set_create(void) {
-  return &g_dummy_pollset_set;
-}
-
-static void pollset_set_destroy(grpc_exec_ctx *exec_ctx,
-                                grpc_pollset_set *pss) {
-  /* Nothing to do */
-}
-
-static void pollset_set_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
-                               grpc_fd *fd) {
-  /* Nothing to do */
-}
-
-static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
-                               grpc_fd *fd) {
-  /* Nothing to do */
-}
-
-static void pollset_set_add_pollset(grpc_exec_ctx *exec_ctx,
-                                    grpc_pollset_set *pss, grpc_pollset *ps) {
-  /* Nothing to do */
-}
-
-static void pollset_set_del_pollset(grpc_exec_ctx *exec_ctx,
-                                    grpc_pollset_set *pss, grpc_pollset *ps) {
-  /* Nothing to do */
-}
-
-static void pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx,
-                                        grpc_pollset_set *bag,
-                                        grpc_pollset_set *item) {
-  /* Nothing to do */
-}
-
-static void pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx,
-                                        grpc_pollset_set *bag,
-                                        grpc_pollset_set *item) {
-  /* Nothing to do */
-}
-
-/*******************************************************************************
- * Event engine binding
- */
-
-static void shutdown_engine(void) {
-  shutdown_poller_threads();
-  shutdown_epoll_sets();
-  fd_global_shutdown();
-  pollset_global_shutdown();
-  epoll_set_global_shutdown();
-  gpr_log(GPR_INFO, "ev-epoll-threadpool engine shutdown complete");
-}
-
-static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
-};
-
-/*****************************************************************************
- * Dedicated polling threads and pollsets - Definitions
- */
-static void add_fd_to_eps(grpc_fd *fd) {
-  GPR_ASSERT(fd->eps == NULL);
-  GPR_TIMER_BEGIN("add_fd_to_eps", 0);
-
-  grpc_error *error = GRPC_ERROR_NONE;
-  size_t idx = (size_t)gpr_atm_no_barrier_fetch_add(&g_next_eps, 1) % g_num_eps;
-  epoll_set *eps = g_epoll_sets[idx];
-
-  gpr_mu_lock(&fd->mu);
-
-  if (fd->orphaned) {
-    gpr_mu_unlock(&fd->mu);
-    return; /* Early out */
-  }
-
-  epoll_set_add_fd_locked(eps, fd, &error);
-  EPS_ADD_REF(eps, "fd");
-  fd->eps = eps;
-
-  GRPC_POLLING_TRACE("add_fd_to_eps (fd: %d, eps idx = %" PRIdPTR ")", fd->fd,
-                     idx);
-  gpr_mu_unlock(&fd->mu);
-
-  GRPC_LOG_IF_ERROR("add_fd_to_eps", error);
-  GPR_TIMER_END("add_fd_to_eps", 0);
-}
-
-static bool init_epoll_sets() {
-  grpc_error *error = GRPC_ERROR_NONE;
-  bool is_success = true;
-
-  g_epoll_sets = (epoll_set **)malloc(g_num_eps * sizeof(epoll_set *));
-
-  for (size_t i = 0; i < g_num_eps; i++) {
-    g_epoll_sets[i] = epoll_set_create(&error);
-    if (g_epoll_sets[i] == NULL) {
-      gpr_log(GPR_ERROR, "Error in creating a epoll set");
-      g_num_eps = i; /* Helps cleanup */
-      shutdown_epoll_sets();
-      is_success = false;
-      goto done;
-    }
-
-    EPS_ADD_REF(g_epoll_sets[i], "init_epoll_sets");
-  }
-
-  gpr_atm_no_barrier_store(&g_next_eps, 0);
-  gpr_mu *mu;
-  pollset_init(&g_read_notifier, &mu);
-
-done:
-  GRPC_LOG_IF_ERROR("init_epoll_sets", error);
-  return is_success;
-}
-
-static void shutdown_epoll_sets() {
-  if (!g_epoll_sets) {
-    return;
-  }
-
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  for (size_t i = 0; i < g_num_eps; i++) {
-    EPS_UNREF(&exec_ctx, g_epoll_sets[i], "shutdown_epoll_sets");
-  }
-  grpc_exec_ctx_flush(&exec_ctx);
-
-  gpr_free(g_epoll_sets);
-  g_epoll_sets = NULL;
-  pollset_destroy(&exec_ctx, &g_read_notifier);
-  grpc_exec_ctx_finish(&exec_ctx);
-}
-
-static void poller_thread_loop(void *arg) {
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_error *error = GRPC_ERROR_NONE;
-  epoll_set *eps = (epoll_set *)arg;
-
-  while (!gpr_atm_acq_load(&eps->is_shutdown)) {
-    epoll_set_work(&exec_ctx, eps, &error);
-    grpc_exec_ctx_flush(&exec_ctx);
-  }
-
-  grpc_exec_ctx_finish(&exec_ctx);
-  GRPC_LOG_IF_ERROR("poller_thread_loop", error);
-}
-
-/* g_epoll_sets MUST be initialized before calling this */
-static void start_poller_threads() {
-  GPR_ASSERT(g_epoll_sets);
-
-  gpr_log(GPR_INFO, "Starting poller threads");
-
-  size_t num_threads = g_num_eps * g_num_threads_per_eps;
-  g_poller_threads = (gpr_thd_id *)malloc(num_threads * sizeof(gpr_thd_id));
-  gpr_thd_options options = gpr_thd_options_default();
-  gpr_thd_options_set_joinable(&options);
-
-  for (size_t i = 0; i < num_threads; i++) {
-    gpr_thd_new(&g_poller_threads[i], poller_thread_loop,
-                (void *)g_epoll_sets[i % g_num_eps], &options);
-  }
-}
-
-static void shutdown_poller_threads() {
-  GPR_ASSERT(g_poller_threads);
-  GPR_ASSERT(g_epoll_sets);
-  grpc_error *error = GRPC_ERROR_NONE;
-
-  gpr_log(GPR_INFO, "Shutting down pollers");
-
-  epoll_set *eps = NULL;
-  size_t num_threads = g_num_eps * g_num_threads_per_eps;
-  for (size_t i = 0; i < num_threads; i++) {
-    eps = g_epoll_sets[i];
-    epoll_set_add_wakeup_fd_locked(eps, &epoll_set_wakeup_fd, &error);
-  }
-
-  for (size_t i = 0; i < g_num_eps; i++) {
-    gpr_thd_join(g_poller_threads[i]);
-  }
-
-  GRPC_LOG_IF_ERROR("shutdown_poller_threads", error);
-  gpr_free(g_poller_threads);
-  g_poller_threads = NULL;
-}
-
-/****************************************************************************/
-
-/* It is possible that GLIBC has epoll but the underlying kernel doesn't.
- * Create a dummy epoll_fd to make sure epoll support is available */
-static bool is_epoll_available() {
-  int fd = epoll_create1(EPOLL_CLOEXEC);
-  if (fd < 0) {
-    gpr_log(
-        GPR_ERROR,
-        "epoll_create1 failed with error: %d. Not using epoll polling engine",
-        fd);
-    return false;
-  }
-  close(fd);
-  return true;
-}
-
-const grpc_event_engine_vtable *grpc_init_epoll_thread_pool_linux(
-    bool requested_explicitly) {
-  if (!requested_explicitly) return NULL;
-
-  if (!grpc_has_wakeup_fd()) {
-    return NULL;
-  }
-
-  if (!is_epoll_available()) {
-    return NULL;
-  }
-
-  fd_global_init();
-
-  if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
-    return NULL;
-  }
-
-  if (!GRPC_LOG_IF_ERROR("epoll_set_global_init", epoll_set_global_init())) {
-    return NULL;
-  }
-
-  if (!init_epoll_sets()) {
-    return NULL;
-  }
-
-  /* TODO (sreek): Maynot be a good idea to start threads here (especially if
-   * this engine doesn't get picked. Consider introducing an engine_init
-   * function in the vtable */
-  start_poller_threads();
-  return &vtable;
-}
-
-#else /* defined(GRPC_LINUX_EPOLL) */
-#if defined(GRPC_POSIX_SOCKET)
-#include "src/core/lib/iomgr/ev_posix.h"
-/* If GRPC_LINUX_EPOLL is not defined, it means epoll is not available. Return
- * NULL */
-const grpc_event_engine_vtable *grpc_init_epoll_thread_pool_linux(
-    bool requested_explicitly) {
-  return NULL;
-}
-#endif /* defined(GRPC_POSIX_SOCKET) */
-#endif /* !defined(GRPC_LINUX_EPOLL) */
diff --git a/src/core/lib/iomgr/ev_epollex_linux.c b/src/core/lib/iomgr/ev_epollex_linux.c
index 770d1fd0a9..8eb4de44d9 100644
--- a/src/core/lib/iomgr/ev_epollex_linux.c
+++ b/src/core/lib/iomgr/ev_epollex_linux.c
@@ -37,6 +37,7 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/is_epollexclusive_available.h"
@@ -49,7 +50,7 @@
 #include "src/core/lib/support/spinlock.h"
 
 /*******************************************************************************
- * Pollset-set sibling link
+ * Polling object
  */
 
 typedef enum {
@@ -141,7 +142,7 @@ static grpc_error *pollable_materialize(pollable *p);
  */
 
 struct grpc_fd {
-  pollable pollable;
+  pollable pollable_obj;
   int fd;
   /* refst format:
        bit 0    : 1=Active / 0=Orphaned
@@ -192,15 +193,15 @@ struct grpc_pollset_worker {
   pollset_worker_link links[POLLSET_WORKER_LINK_COUNT];
   gpr_cv cv;
   grpc_pollset *pollset;
-  pollable *pollable;
+  pollable *pollable_obj;
 };
 
 #define MAX_EPOLL_EVENTS 100
 #define MAX_EPOLL_EVENTS_HANDLED_EACH_POLL_CALL 5
 
 struct grpc_pollset {
-  pollable pollable;
-  pollable *current_pollable;
+  pollable pollable_obj;
+  pollable *current_pollable_obj;
   int kick_alls_pending;
   bool kicked_without_poller;
   grpc_closure *shutdown_closure;
@@ -278,10 +279,10 @@ static void ref_by(grpc_fd *fd, int n) {
 }
 
 static void fd_destroy(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_fd *fd = arg;
+  grpc_fd *fd = (grpc_fd *)arg;
   /* Add the fd to the freelist */
   grpc_iomgr_unregister_object(&fd->iomgr_object);
-  pollable_destroy(&fd->pollable);
+  pollable_destroy(&fd->pollable_obj);
   gpr_mu_destroy(&fd->orphaned_mu);
   gpr_mu_lock(&fd_freelist_mu);
   fd->freelist_next = fd_freelist;
@@ -339,10 +340,10 @@ static grpc_fd *fd_create(int fd, const char *name) {
   gpr_mu_unlock(&fd_freelist_mu);
 
   if (new_fd == NULL) {
-    new_fd = gpr_malloc(sizeof(grpc_fd));
+    new_fd = (grpc_fd *)gpr_malloc(sizeof(grpc_fd));
   }
 
-  pollable_init(&new_fd->pollable, PO_FD);
+  pollable_init(&new_fd->pollable_obj, PO_FD);
 
   gpr_atm_rel_store(&new_fd->refst, (gpr_atm)1);
   new_fd->fd = fd;
@@ -384,7 +385,7 @@ static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
   bool is_fd_closed = already_closed;
   grpc_error *error = GRPC_ERROR_NONE;
 
-  gpr_mu_lock(&fd->pollable.po.mu);
+  gpr_mu_lock(&fd->pollable_obj.po.mu);
   gpr_mu_lock(&fd->orphaned_mu);
   fd->on_done_closure = on_done;
 
@@ -410,7 +411,7 @@ static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
   GRPC_CLOSURE_SCHED(exec_ctx, fd->on_done_closure, GRPC_ERROR_REF(error));
 
   gpr_mu_unlock(&fd->orphaned_mu);
-  gpr_mu_unlock(&fd->pollable.po.mu);
+  gpr_mu_unlock(&fd->pollable_obj.po.mu);
   UNREF_BY(exec_ctx, fd, 2, reason); /* Drop the reference */
   GRPC_LOG_IF_ERROR("fd_orphan", GRPC_ERROR_REF(error));
   GRPC_ERROR_UNREF(error);
@@ -476,8 +477,9 @@ static grpc_error *pollable_materialize(pollable *p) {
       close(new_epfd);
       return err;
     }
-    struct epoll_event ev = {.events = (uint32_t)(EPOLLIN | EPOLLET),
-                             .data.ptr = (void *)(1 | (intptr_t)&p->wakeup)};
+    struct epoll_event ev;
+    ev.events = (uint32_t)(EPOLLIN | EPOLLET);
+    ev.data.ptr = (void *)(1 | (intptr_t)&p->wakeup);
     if (epoll_ctl(new_epfd, EPOLL_CTL_ADD, p->wakeup.read_fd, &ev) != 0) {
       err = GRPC_OS_ERROR(errno, "epoll_ctl");
       close(new_epfd);
@@ -506,9 +508,9 @@ static grpc_error *pollable_add_fd(pollable *p, grpc_fd *fd) {
     gpr_mu_unlock(&fd->orphaned_mu);
     return GRPC_ERROR_NONE;
   }
-  struct epoll_event ev_fd = {
-      .events = (uint32_t)(EPOLLET | EPOLLIN | EPOLLOUT | EPOLLEXCLUSIVE),
-      .data.ptr = fd};
+  struct epoll_event ev_fd;
+  ev_fd.events = (uint32_t)(EPOLLET | EPOLLIN | EPOLLOUT | EPOLLEXCLUSIVE);
+  ev_fd.data.ptr = fd;
   if (epoll_ctl(epfd, EPOLL_CTL_ADD, fd->fd, &ev_fd) != 0) {
     switch (errno) {
       case EEXIST:
@@ -555,31 +557,35 @@ static void pollset_maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
 static void do_kick_all(grpc_exec_ctx *exec_ctx, void *arg,
                         grpc_error *error_unused) {
   grpc_error *error = GRPC_ERROR_NONE;
-  grpc_pollset *pollset = arg;
-  gpr_mu_lock(&pollset->pollable.po.mu);
+  grpc_pollset *pollset = (grpc_pollset *)arg;
+  gpr_mu_lock(&pollset->pollable_obj.po.mu);
   if (pollset->root_worker != NULL) {
     grpc_pollset_worker *worker = pollset->root_worker;
     do {
-      if (worker->pollable != &pollset->pollable) {
-        gpr_mu_lock(&worker->pollable->po.mu);
+      GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
+      if (worker->pollable_obj != &pollset->pollable_obj) {
+        gpr_mu_lock(&worker->pollable_obj->po.mu);
       }
       if (worker->initialized_cv && worker != pollset->root_worker) {
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_DEBUG, "PS:%p kickall_via_cv %p (pollable %p vs %p)",
-                  pollset, worker, &pollset->pollable, worker->pollable);
+                  pollset, worker, &pollset->pollable_obj,
+                  worker->pollable_obj);
         }
         worker->kicked = true;
         gpr_cv_signal(&worker->cv);
       } else {
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_DEBUG, "PS:%p kickall_via_wakeup %p (pollable %p vs %p)",
-                  pollset, worker, &pollset->pollable, worker->pollable);
+                  pollset, worker, &pollset->pollable_obj,
+                  worker->pollable_obj);
         }
-        append_error(&error, grpc_wakeup_fd_wakeup(&worker->pollable->wakeup),
+        append_error(&error,
+                     grpc_wakeup_fd_wakeup(&worker->pollable_obj->wakeup),
                      "pollset_shutdown");
       }
-      if (worker->pollable != &pollset->pollable) {
-        gpr_mu_unlock(&worker->pollable->po.mu);
+      if (worker->pollable_obj != &pollset->pollable_obj) {
+        gpr_mu_unlock(&worker->pollable_obj->po.mu);
       }
 
       worker = worker->links[PWL_POLLSET].next;
@@ -587,7 +593,7 @@ static void do_kick_all(grpc_exec_ctx *exec_ctx, void *arg,
   }
   pollset->kick_alls_pending--;
   pollset_maybe_finish_shutdown(exec_ctx, pollset);
-  gpr_mu_unlock(&pollset->pollable.po.mu);
+  gpr_mu_unlock(&pollset->pollable_obj.po.mu);
   GRPC_LOG_IF_ERROR("kick_all", error);
 }
 
@@ -661,26 +667,27 @@ static grpc_error *pollset_kick_inner(grpc_pollset *pollset, pollable *p,
 }
 
 /* p->po.mu must be held before calling this function */
-static grpc_error *pollset_kick(grpc_pollset *pollset,
+static grpc_error *pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                                 grpc_pollset_worker *specific_worker) {
-  pollable *p = pollset->current_pollable;
-  if (p != &pollset->pollable) {
+  pollable *p = pollset->current_pollable_obj;
+  GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
+  if (p != &pollset->pollable_obj) {
     gpr_mu_lock(&p->po.mu);
   }
   grpc_error *error = pollset_kick_inner(pollset, p, specific_worker);
-  if (p != &pollset->pollable) {
+  if (p != &pollset->pollable_obj) {
     gpr_mu_unlock(&p->po.mu);
   }
   return error;
 }
 
 static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
-  pollable_init(&pollset->pollable, PO_POLLSET);
-  pollset->current_pollable = &g_empty_pollable;
+  pollable_init(&pollset->pollable_obj, PO_POLLSET);
+  pollset->current_pollable_obj = &g_empty_pollable;
   pollset->kicked_without_poller = false;
   pollset->shutdown_closure = NULL;
   pollset->root_worker = NULL;
-  *mu = &pollset->pollable.po.mu;
+  *mu = &pollset->pollable_obj.po.mu;
 }
 
 /* Convert a timespec to milliseconds:
@@ -702,7 +709,10 @@ static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
   }
 
   static const gpr_timespec round_up = {
-      .clock_type = GPR_TIMESPAN, .tv_sec = 0, .tv_nsec = GPR_NS_PER_MS - 1};
+      0,                 /* tv_sec */
+      GPR_NS_PER_MS - 1, /* tv_nsec */
+      GPR_TIMESPAN       /* clock_type */
+  };
   timeout = gpr_time_sub(deadline, now);
   int millis = gpr_time_to_millis(gpr_time_add(timeout, round_up));
   return millis >= 1 ? millis : 1;
@@ -728,8 +738,8 @@ static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
 static grpc_error *fd_become_pollable_locked(grpc_fd *fd) {
   grpc_error *error = GRPC_ERROR_NONE;
   static const char *err_desc = "fd_become_pollable";
-  if (append_error(&error, pollable_materialize(&fd->pollable), err_desc)) {
-    append_error(&error, pollable_add_fd(&fd->pollable, fd), err_desc);
+  if (append_error(&error, pollable_materialize(&fd->pollable_obj), err_desc)) {
+    append_error(&error, pollable_add_fd(&fd->pollable_obj, fd), err_desc);
   }
   return error;
 }
@@ -744,7 +754,7 @@ static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
 }
 
 static bool pollset_is_pollable_fd(grpc_pollset *pollset, pollable *p) {
-  return p != &g_empty_pollable && p != &pollset->pollable;
+  return p != &g_empty_pollable && p != &pollset->pollable_obj;
 }
 
 static grpc_error *pollset_process_events(grpc_exec_ctx *exec_ctx,
@@ -761,8 +771,9 @@ static grpc_error *pollset_process_events(grpc_exec_ctx *exec_ctx,
       if (GRPC_TRACER_ON(grpc_polling_trace)) {
         gpr_log(GPR_DEBUG, "PS:%p got pollset_wakeup %p", pollset, data_ptr);
       }
-      append_error(&error, grpc_wakeup_fd_consume_wakeup(
-                               (void *)((~(intptr_t)1) & (intptr_t)data_ptr)),
+      append_error(&error,
+                   grpc_wakeup_fd_consume_wakeup(
+                       (grpc_wakeup_fd *)((~(intptr_t)1) & (intptr_t)data_ptr)),
                    err_desc);
     } else {
       grpc_fd *fd = (grpc_fd *)data_ptr;
@@ -789,9 +800,9 @@ static grpc_error *pollset_process_events(grpc_exec_ctx *exec_ctx,
 
 /* pollset_shutdown is guaranteed to be called before pollset_destroy. */
 static void pollset_destroy(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
-  pollable_destroy(&pollset->pollable);
-  if (pollset_is_pollable_fd(pollset, pollset->current_pollable)) {
-    UNREF_BY(exec_ctx, (grpc_fd *)pollset->current_pollable, 2,
+  pollable_destroy(&pollset->pollable_obj);
+  if (pollset_is_pollable_fd(pollset, pollset->current_pollable_obj)) {
+    UNREF_BY(exec_ctx, (grpc_fd *)pollset->current_pollable_obj, 2,
              "pollset_pollable");
   }
   GRPC_LOG_IF_ERROR("pollset_process_events",
@@ -814,6 +825,7 @@ static grpc_error *pollset_epoll(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   }
   int r;
   do {
+    GRPC_STATS_INC_SYSCALL_POLL(exec_ctx);
     r = epoll_wait(p->epfd, pollset->events, MAX_EPOLL_EVENTS, timeout);
   } while (r < 0 && errno == EINTR);
   if (timeout != 0) {
@@ -880,68 +892,69 @@ static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
   worker->initialized_cv = false;
   worker->kicked = false;
   worker->pollset = pollset;
-  worker->pollable = pollset->current_pollable;
+  worker->pollable_obj = pollset->current_pollable_obj;
 
-  if (pollset_is_pollable_fd(pollset, worker->pollable)) {
-    REF_BY((grpc_fd *)worker->pollable, 2, "one_poll");
+  if (pollset_is_pollable_fd(pollset, worker->pollable_obj)) {
+    REF_BY((grpc_fd *)worker->pollable_obj, 2, "one_poll");
   }
 
   worker_insert(&pollset->root_worker, PWL_POLLSET, worker);
-  if (!worker_insert(&worker->pollable->root_worker, PWL_POLLABLE, worker)) {
+  if (!worker_insert(&worker->pollable_obj->root_worker, PWL_POLLABLE,
+                     worker)) {
     worker->initialized_cv = true;
     gpr_cv_init(&worker->cv);
-    if (worker->pollable != &pollset->pollable) {
-      gpr_mu_unlock(&pollset->pollable.po.mu);
+    if (worker->pollable_obj != &pollset->pollable_obj) {
+      gpr_mu_unlock(&pollset->pollable_obj.po.mu);
     }
     if (GRPC_TRACER_ON(grpc_polling_trace) &&
-        worker->pollable->root_worker != worker) {
+        worker->pollable_obj->root_worker != worker) {
       gpr_log(GPR_DEBUG, "PS:%p wait %p w=%p for %dms", pollset,
-              worker->pollable, worker,
+              worker->pollable_obj, worker,
               poll_deadline_to_millis_timeout(deadline, *now));
     }
-    while (do_poll && worker->pollable->root_worker != worker) {
-      if (gpr_cv_wait(&worker->cv, &worker->pollable->po.mu, deadline)) {
+    while (do_poll && worker->pollable_obj->root_worker != worker) {
+      if (gpr_cv_wait(&worker->cv, &worker->pollable_obj->po.mu, deadline)) {
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
           gpr_log(GPR_DEBUG, "PS:%p timeout_wait %p w=%p", pollset,
-                  worker->pollable, worker);
+                  worker->pollable_obj, worker);
         }
         do_poll = false;
       } else if (worker->kicked) {
         if (GRPC_TRACER_ON(grpc_polling_trace)) {
-          gpr_log(GPR_DEBUG, "PS:%p wakeup %p w=%p", pollset, worker->pollable,
-                  worker);
+          gpr_log(GPR_DEBUG, "PS:%p wakeup %p w=%p", pollset,
+                  worker->pollable_obj, worker);
         }
         do_poll = false;
       } else if (GRPC_TRACER_ON(grpc_polling_trace) &&
-                 worker->pollable->root_worker != worker) {
+                 worker->pollable_obj->root_worker != worker) {
         gpr_log(GPR_DEBUG, "PS:%p spurious_wakeup %p w=%p", pollset,
-                worker->pollable, worker);
+                worker->pollable_obj, worker);
       }
     }
-    if (worker->pollable != &pollset->pollable) {
-      gpr_mu_unlock(&worker->pollable->po.mu);
-      gpr_mu_lock(&pollset->pollable.po.mu);
-      gpr_mu_lock(&worker->pollable->po.mu);
+    if (worker->pollable_obj != &pollset->pollable_obj) {
+      gpr_mu_unlock(&worker->pollable_obj->po.mu);
+      gpr_mu_lock(&pollset->pollable_obj.po.mu);
+      gpr_mu_lock(&worker->pollable_obj->po.mu);
     }
     *now = gpr_now(now->clock_type);
   }
 
   return do_poll && pollset->shutdown_closure == NULL &&
-         pollset->current_pollable == worker->pollable;
+         pollset->current_pollable_obj == worker->pollable_obj;
 }
 
 static void end_worker(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                        grpc_pollset_worker *worker,
                        grpc_pollset_worker **worker_hdl) {
   if (NEW_ROOT ==
-      worker_remove(&worker->pollable->root_worker, PWL_POLLABLE, worker)) {
-    gpr_cv_signal(&worker->pollable->root_worker->cv);
+      worker_remove(&worker->pollable_obj->root_worker, PWL_POLLABLE, worker)) {
+    gpr_cv_signal(&worker->pollable_obj->root_worker->cv);
   }
   if (worker->initialized_cv) {
     gpr_cv_destroy(&worker->cv);
   }
-  if (pollset_is_pollable_fd(pollset, worker->pollable)) {
-    UNREF_BY(exec_ctx, (grpc_fd *)worker->pollable, 2, "one_poll");
+  if (pollset_is_pollable_fd(pollset, worker->pollable_obj)) {
+    UNREF_BY(exec_ctx, (grpc_fd *)worker->pollable_obj, 2, "one_poll");
   }
   if (EMPTIED == worker_remove(&pollset->root_worker, PWL_POLLSET, worker)) {
     pollset_maybe_finish_shutdown(exec_ctx, pollset);
@@ -969,48 +982,48 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
     pollset->kicked_without_poller = false;
     return GRPC_ERROR_NONE;
   }
-  if (pollset->current_pollable != &pollset->pollable) {
-    gpr_mu_lock(&pollset->current_pollable->po.mu);
+  if (pollset->current_pollable_obj != &pollset->pollable_obj) {
+    gpr_mu_lock(&pollset->current_pollable_obj->po.mu);
   }
   if (begin_worker(pollset, &worker, worker_hdl, &now, deadline)) {
     gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset);
     gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
     GPR_ASSERT(!pollset->shutdown_closure);
-    append_error(&error, pollable_materialize(worker.pollable), err_desc);
-    if (worker.pollable != &pollset->pollable) {
-      gpr_mu_unlock(&worker.pollable->po.mu);
+    append_error(&error, pollable_materialize(worker.pollable_obj), err_desc);
+    if (worker.pollable_obj != &pollset->pollable_obj) {
+      gpr_mu_unlock(&worker.pollable_obj->po.mu);
     }
-    gpr_mu_unlock(&pollset->pollable.po.mu);
+    gpr_mu_unlock(&pollset->pollable_obj.po.mu);
     if (pollset->event_cursor == pollset->event_count) {
-      append_error(&error, pollset_epoll(exec_ctx, pollset, worker.pollable,
+      append_error(&error, pollset_epoll(exec_ctx, pollset, worker.pollable_obj,
                                          now, deadline),
                    err_desc);
     }
     append_error(&error, pollset_process_events(exec_ctx, pollset, false),
                  err_desc);
-    gpr_mu_lock(&pollset->pollable.po.mu);
-    if (worker.pollable != &pollset->pollable) {
-      gpr_mu_lock(&worker.pollable->po.mu);
+    gpr_mu_lock(&pollset->pollable_obj.po.mu);
+    if (worker.pollable_obj != &pollset->pollable_obj) {
+      gpr_mu_lock(&worker.pollable_obj->po.mu);
     }
     gpr_tls_set(&g_current_thread_pollset, 0);
     gpr_tls_set(&g_current_thread_worker, 0);
     pollset_maybe_finish_shutdown(exec_ctx, pollset);
   }
   end_worker(exec_ctx, pollset, &worker, worker_hdl);
-  if (worker.pollable != &pollset->pollable) {
-    gpr_mu_unlock(&worker.pollable->po.mu);
+  if (worker.pollable_obj != &pollset->pollable_obj) {
+    gpr_mu_unlock(&worker.pollable_obj->po.mu);
   }
   if (grpc_exec_ctx_has_work(exec_ctx)) {
-    gpr_mu_unlock(&pollset->pollable.po.mu);
+    gpr_mu_unlock(&pollset->pollable_obj.po.mu);
     grpc_exec_ctx_flush(exec_ctx);
-    gpr_mu_lock(&pollset->pollable.po.mu);
+    gpr_mu_lock(&pollset->pollable_obj.po.mu);
   }
   return error;
 }
 
 static void unref_fd_no_longer_poller(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error) {
-  grpc_fd *fd = arg;
+  grpc_fd *fd = (grpc_fd *)arg;
   UNREF_BY(exec_ctx, fd, 2, "pollset_pollable");
 }
 
@@ -1020,7 +1033,7 @@ static grpc_error *pollset_add_fd_locked(grpc_exec_ctx *exec_ctx,
                                          bool fd_locked) {
   static const char *err_desc = "pollset_add_fd";
   grpc_error *error = GRPC_ERROR_NONE;
-  if (pollset->current_pollable == &g_empty_pollable) {
+  if (pollset->current_pollable_obj == &g_empty_pollable) {
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_DEBUG,
               "PS:%p add fd %p; transition pollable from empty to fd", pollset,
@@ -1028,19 +1041,19 @@ static grpc_error *pollset_add_fd_locked(grpc_exec_ctx *exec_ctx,
     }
     /* empty pollable --> single fd pollable */
     pollset_kick_all(exec_ctx, pollset);
-    pollset->current_pollable = &fd->pollable;
-    if (!fd_locked) gpr_mu_lock(&fd->pollable.po.mu);
+    pollset->current_pollable_obj = &fd->pollable_obj;
+    if (!fd_locked) gpr_mu_lock(&fd->pollable_obj.po.mu);
     append_error(&error, fd_become_pollable_locked(fd), err_desc);
-    if (!fd_locked) gpr_mu_unlock(&fd->pollable.po.mu);
+    if (!fd_locked) gpr_mu_unlock(&fd->pollable_obj.po.mu);
     REF_BY(fd, 2, "pollset_pollable");
-  } else if (pollset->current_pollable == &pollset->pollable) {
+  } else if (pollset->current_pollable_obj == &pollset->pollable_obj) {
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_DEBUG, "PS:%p add fd %p; already multipolling", pollset, fd);
     }
-    append_error(&error, pollable_add_fd(pollset->current_pollable, fd),
+    append_error(&error, pollable_add_fd(pollset->current_pollable_obj, fd),
                  err_desc);
-  } else if (pollset->current_pollable != &fd->pollable) {
-    grpc_fd *had_fd = (grpc_fd *)pollset->current_pollable;
+  } else if (pollset->current_pollable_obj != &fd->pollable_obj) {
+    grpc_fd *had_fd = (grpc_fd *)pollset->current_pollable_obj;
     if (GRPC_TRACER_ON(grpc_polling_trace)) {
       gpr_log(GPR_DEBUG,
               "PS:%p add fd %p; transition pollable from fd %p to multipoller",
@@ -1052,11 +1065,11 @@ static grpc_error *pollset_add_fd_locked(grpc_exec_ctx *exec_ctx,
     grpc_lfev_set_ready(exec_ctx, &had_fd->read_closure, "read");
     grpc_lfev_set_ready(exec_ctx, &had_fd->write_closure, "write");
     pollset_kick_all(exec_ctx, pollset);
-    pollset->current_pollable = &pollset->pollable;
-    if (append_error(&error, pollable_materialize(&pollset->pollable),
+    pollset->current_pollable_obj = &pollset->pollable_obj;
+    if (append_error(&error, pollable_materialize(&pollset->pollable_obj),
                      err_desc)) {
-      pollable_add_fd(&pollset->pollable, had_fd);
-      pollable_add_fd(&pollset->pollable, fd);
+      pollable_add_fd(&pollset->pollable_obj, had_fd);
+      pollable_add_fd(&pollset->pollable_obj, fd);
     }
     GRPC_CLOSURE_SCHED(exec_ctx,
                        GRPC_CLOSURE_CREATE(unref_fd_no_longer_poller, had_fd,
@@ -1068,9 +1081,9 @@ static grpc_error *pollset_add_fd_locked(grpc_exec_ctx *exec_ctx,
 
 static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                            grpc_fd *fd) {
-  gpr_mu_lock(&pollset->pollable.po.mu);
+  gpr_mu_lock(&pollset->pollable_obj.po.mu);
   grpc_error *error = pollset_add_fd_locked(exec_ctx, pollset, fd, false);
-  gpr_mu_unlock(&pollset->pollable.po.mu);
+  gpr_mu_unlock(&pollset->pollable_obj.po.mu);
   GRPC_LOG_IF_ERROR("pollset_add_fd", error);
 }
 
@@ -1079,7 +1092,7 @@ static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
  */
 
 static grpc_pollset_set *pollset_set_create(void) {
-  grpc_pollset_set *pss = gpr_zalloc(sizeof(*pss));
+  grpc_pollset_set *pss = (grpc_pollset_set *)gpr_zalloc(sizeof(*pss));
   po_init(&pss->po, PO_POLLSET_SET);
   return pss;
 }
@@ -1092,7 +1105,7 @@ static void pollset_set_destroy(grpc_exec_ctx *exec_ctx,
 
 static void pollset_set_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
                                grpc_fd *fd) {
-  po_join(exec_ctx, &pss->po, &fd->pollable.po);
+  po_join(exec_ctx, &pss->po, &fd->pollable_obj.po);
 }
 
 static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
@@ -1100,7 +1113,7 @@ static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss,
 
 static void pollset_set_add_pollset(grpc_exec_ctx *exec_ctx,
                                     grpc_pollset_set *pss, grpc_pollset *ps) {
-  po_join(exec_ctx, &pss->po, &ps->pollable.po);
+  po_join(exec_ctx, &pss->po, &ps->pollable_obj.po);
 }
 
 static void pollset_set_del_pollset(grpc_exec_ctx *exec_ctx,
@@ -1241,7 +1254,7 @@ static void pg_broadcast(grpc_exec_ctx *exec_ctx, polling_group *from,
 static void pg_create(grpc_exec_ctx *exec_ctx, polling_obj **initial_po,
                       size_t initial_po_count) {
   /* assumes all polling objects in initial_po are locked */
-  polling_group *pg = gpr_malloc(sizeof(*pg));
+  polling_group *pg = (polling_group *)gpr_malloc(sizeof(*pg));
   po_init(&pg->po, PO_POLLING_GROUP);
   gpr_ref_init(&pg->refs, (int)initial_po_count);
   for (size_t i = 0; i < initial_po_count; i++) {
@@ -1351,7 +1364,7 @@ static void pg_merge(grpc_exec_ctx *exec_ctx, polling_group *a,
     gpr_mu_lock(&po->mu);
     if (unref_count == unref_cap) {
       unref_cap = GPR_MAX(8, 3 * unref_cap / 2);
-      unref = gpr_realloc(unref, unref_cap * sizeof(*unref));
+      unref = (polling_group **)gpr_realloc(unref, unref_cap * sizeof(*unref));
     }
     unref[unref_count++] = po->group;
     po->group = pg_ref(a);
@@ -1383,34 +1396,34 @@ static void shutdown_engine(void) {
 }
 
 static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
+    sizeof(grpc_pollset),
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_is_shutdown,
+    fd_get_read_notifier_pollset,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    shutdown_engine,
 };
 
 const grpc_event_engine_vtable *grpc_init_epollex_linux(
diff --git a/src/core/lib/iomgr/ev_epollsig_linux.c b/src/core/lib/iomgr/ev_epollsig_linux.c
index 070d75e42a..4d8bdf1401 100644
--- a/src/core/lib/iomgr/ev_epollsig_linux.c
+++ b/src/core/lib/iomgr/ev_epollsig_linux.c
@@ -39,6 +39,7 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/lockfree_event.h"
@@ -362,7 +363,8 @@ static void polling_island_add_fds_locked(polling_island *pi, grpc_fd **fds,
 
     if (pi->fd_cnt == pi->fd_capacity) {
       pi->fd_capacity = GPR_MAX(pi->fd_capacity + 8, pi->fd_cnt * 3 / 2);
-      pi->fds = gpr_realloc(pi->fds, sizeof(grpc_fd *) * pi->fd_capacity);
+      pi->fds =
+          (grpc_fd **)gpr_realloc(pi->fds, sizeof(grpc_fd *) * pi->fd_capacity);
     }
 
     pi->fds[pi->fd_cnt++] = fds[i];
@@ -465,7 +467,7 @@ static polling_island *polling_island_create(grpc_exec_ctx *exec_ctx,
 
   *error = GRPC_ERROR_NONE;
 
-  pi = gpr_malloc(sizeof(*pi));
+  pi = (polling_island *)gpr_malloc(sizeof(*pi));
   gpr_mu_init(&pi->mu);
   pi->fd_cnt = 0;
   pi->fd_capacity = 0;
@@ -809,7 +811,7 @@ static grpc_fd *fd_create(int fd, const char *name) {
   gpr_mu_unlock(&fd_freelist_mu);
 
   if (new_fd == NULL) {
-    new_fd = gpr_malloc(sizeof(grpc_fd));
+    new_fd = (grpc_fd *)gpr_malloc(sizeof(grpc_fd));
     gpr_mu_init(&new_fd->po.mu);
   }
 
@@ -1019,10 +1021,11 @@ static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
 }
 
 /* p->mu must be held before calling this function */
-static grpc_error *pollset_kick(grpc_pollset *p,
+static grpc_error *pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *p,
                                 grpc_pollset_worker *specific_worker) {
   GPR_TIMER_BEGIN("pollset_kick", 0);
   grpc_error *error = GRPC_ERROR_NONE;
+  GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
   const char *err_desc = "Kick Failure";
   grpc_pollset_worker *worker = specific_worker;
   if (worker != NULL) {
@@ -1130,7 +1133,8 @@ static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
 }
 
 static void pollset_release_polling_island(grpc_exec_ctx *exec_ctx,
-                                           grpc_pollset *ps, char *reason) {
+                                           grpc_pollset *ps,
+                                           const char *reason) {
   if (ps->po.pi != NULL) {
     PI_UNREF(exec_ctx, ps->po.pi, reason);
   }
@@ -1156,7 +1160,7 @@ static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   GPR_ASSERT(!pollset->shutting_down);
   pollset->shutting_down = true;
   pollset->shutdown_done = closure;
-  pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+  pollset_kick(exec_ctx, pollset, GRPC_POLLSET_KICK_BROADCAST);
 
   /* If the pollset has any workers, we cannot call finish_shutdown_locked()
      because it would release the underlying polling island. In such a case, we
@@ -1236,6 +1240,7 @@ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx,
   g_current_thread_polling_island = pi;
 
   GRPC_SCHEDULING_START_BLOCKING_REGION;
+  GRPC_STATS_INC_SYSCALL_POLL(exec_ctx);
   ep_rv =
       epoll_pwait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, timeout_ms, sig_mask);
   GRPC_SCHEDULING_END_BLOCKING_REGION;
@@ -1271,7 +1276,7 @@ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx,
          to the function pollset_work_and_unlock() will pick up the correct
          epoll_fd */
     } else {
-      grpc_fd *fd = data_ptr;
+      grpc_fd *fd = (grpc_fd *)data_ptr;
       int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
       int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
       int write_ev = ep_ev[i].events & EPOLLOUT;
@@ -1567,7 +1572,7 @@ static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
  */
 
 static grpc_pollset_set *pollset_set_create(void) {
-  grpc_pollset_set *pss = gpr_malloc(sizeof(*pss));
+  grpc_pollset_set *pss = (grpc_pollset_set *)gpr_malloc(sizeof(*pss));
   gpr_mu_init(&pss->po.mu);
   pss->po.pi = NULL;
 #ifndef NDEBUG
@@ -1645,8 +1650,8 @@ void *grpc_pollset_get_polling_island(grpc_pollset *ps) {
 }
 
 bool grpc_are_polling_islands_equal(void *p, void *q) {
-  polling_island *p1 = p;
-  polling_island *p2 = q;
+  polling_island *p1 = (polling_island *)p;
+  polling_island *p2 = (polling_island *)q;
 
   /* Note: polling_island_lock_pair() may change p1 and p2 to point to the
      latest polling islands in their respective linked lists */
@@ -1667,34 +1672,34 @@ static void shutdown_engine(void) {
 }
 
 static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
+    sizeof(grpc_pollset),
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_is_shutdown,
+    fd_get_read_notifier_pollset,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    shutdown_engine,
 };
 
 /* It is possible that GLIBC has epoll but the underlying kernel doesn't.
@@ -1728,9 +1733,7 @@ const grpc_event_engine_vtable *grpc_init_epollsig_linux(
   }
 
   if (!is_grpc_wakeup_signal_initialized) {
-    /* TODO(ctiller): when other epoll engines are ready, remove the true || to
-     * force this to be explitly chosen if needed */
-    if (true || explicit_request) {
+    if (explicit_request) {
       grpc_use_signal(SIGRTMIN + 6);
     } else {
       return NULL;
diff --git a/src/core/lib/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c
index 9472a8e520..e170702dca 100644
--- a/src/core/lib/iomgr/ev_poll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_posix.c
@@ -36,6 +36,7 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/iomgr/wakeup_fd_cv.h"
@@ -208,7 +209,7 @@ static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
 #define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2
 /* As per pollset_kick, with an extended set of flags (defined above)
    -- mostly for fd_posix's use. */
-static grpc_error *pollset_kick_ext(grpc_pollset *p,
+static grpc_error *pollset_kick_ext(grpc_exec_ctx *exec_ctx, grpc_pollset *p,
                                     grpc_pollset_worker *specific_worker,
                                     uint32_t flags) GRPC_MUST_USE_RESULT;
 
@@ -326,7 +327,7 @@ static void unref_by(grpc_fd *fd, int n) {
 }
 
 static grpc_fd *fd_create(int fd, const char *name) {
-  grpc_fd *r = gpr_malloc(sizeof(*r));
+  grpc_fd *r = (grpc_fd *)gpr_malloc(sizeof(*r));
   gpr_mu_init(&r->mu);
   gpr_atm_rel_store(&r->refst, 1);
   r->shutdown = 0;
@@ -364,36 +365,39 @@ static grpc_pollset *fd_get_read_notifier_pollset(grpc_exec_ctx *exec_ctx,
   return notifier;
 }
 
-static grpc_error *pollset_kick_locked(grpc_fd_watcher *watcher) {
+static grpc_error *pollset_kick_locked(grpc_exec_ctx *exec_ctx,
+                                       grpc_fd_watcher *watcher) {
   gpr_mu_lock(&watcher->pollset->mu);
   GPR_ASSERT(watcher->worker);
-  grpc_error *err = pollset_kick_ext(watcher->pollset, watcher->worker,
-                                     GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP);
+  grpc_error *err =
+      pollset_kick_ext(exec_ctx, watcher->pollset, watcher->worker,
+                       GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP);
   gpr_mu_unlock(&watcher->pollset->mu);
   return err;
 }
 
-static void maybe_wake_one_watcher_locked(grpc_fd *fd) {
+static void maybe_wake_one_watcher_locked(grpc_exec_ctx *exec_ctx,
+                                          grpc_fd *fd) {
   if (fd->inactive_watcher_root.next != &fd->inactive_watcher_root) {
-    pollset_kick_locked(fd->inactive_watcher_root.next);
+    pollset_kick_locked(exec_ctx, fd->inactive_watcher_root.next);
   } else if (fd->read_watcher) {
-    pollset_kick_locked(fd->read_watcher);
+    pollset_kick_locked(exec_ctx, fd->read_watcher);
   } else if (fd->write_watcher) {
-    pollset_kick_locked(fd->write_watcher);
+    pollset_kick_locked(exec_ctx, fd->write_watcher);
   }
 }
 
-static void wake_all_watchers_locked(grpc_fd *fd) {
+static void wake_all_watchers_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
   grpc_fd_watcher *watcher;
   for (watcher = fd->inactive_watcher_root.next;
        watcher != &fd->inactive_watcher_root; watcher = watcher->next) {
-    pollset_kick_locked(watcher);
+    pollset_kick_locked(exec_ctx, watcher);
   }
   if (fd->read_watcher) {
-    pollset_kick_locked(fd->read_watcher);
+    pollset_kick_locked(exec_ctx, fd->read_watcher);
   }
   if (fd->write_watcher && fd->write_watcher != fd->read_watcher) {
-    pollset_kick_locked(fd->write_watcher);
+    pollset_kick_locked(exec_ctx, fd->write_watcher);
   }
 }
 
@@ -434,7 +438,7 @@ static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
   if (!has_watchers(fd)) {
     close_fd_locked(exec_ctx, fd);
   } else {
-    wake_all_watchers_locked(fd);
+    wake_all_watchers_locked(exec_ctx, fd);
   }
   gpr_mu_unlock(&fd->mu);
   UNREF_BY(fd, 2, reason); /* drop the reference */
@@ -478,7 +482,7 @@ static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
     /* already ready ==> queue the closure to run immediately */
     *st = CLOSURE_NOT_READY;
     GRPC_CLOSURE_SCHED(exec_ctx, closure, fd_shutdown_error(fd));
-    maybe_wake_one_watcher_locked(fd);
+    maybe_wake_one_watcher_locked(exec_ctx, fd);
   } else {
     /* upcallptr was set to a different closure.  This is an error! */
     gpr_log(GPR_ERROR,
@@ -647,7 +651,7 @@ static void fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *watcher,
     }
   }
   if (kick) {
-    maybe_wake_one_watcher_locked(fd);
+    maybe_wake_one_watcher_locked(exec_ctx, fd);
   }
   if (fd_is_orphaned(fd) && !has_watchers(fd) && !fd->closed) {
     close_fd_locked(exec_ctx, fd);
@@ -711,11 +715,12 @@ static void kick_append_error(grpc_error **composite, grpc_error *error) {
   *composite = grpc_error_add_child(*composite, error);
 }
 
-static grpc_error *pollset_kick_ext(grpc_pollset *p,
+static grpc_error *pollset_kick_ext(grpc_exec_ctx *exec_ctx, grpc_pollset *p,
                                     grpc_pollset_worker *specific_worker,
                                     uint32_t flags) {
   GPR_TIMER_BEGIN("pollset_kick_ext", 0);
   grpc_error *error = GRPC_ERROR_NONE;
+  GRPC_STATS_INC_POLLSET_KICK(exec_ctx);
 
   /* pollset->mu already held */
   if (specific_worker != NULL) {
@@ -781,9 +786,9 @@ static grpc_error *pollset_kick_ext(grpc_pollset *p,
   return error;
 }
 
-static grpc_error *pollset_kick(grpc_pollset *p,
+static grpc_error *pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *p,
                                 grpc_pollset_worker *specific_worker) {
-  return pollset_kick_ext(p, specific_worker, 0);
+  return pollset_kick_ext(exec_ctx, p, specific_worker, 0);
 }
 
 /* global state management */
@@ -841,12 +846,12 @@ static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   if (pollset->fd_count == pollset->fd_capacity) {
     pollset->fd_capacity =
         GPR_MAX(pollset->fd_capacity + 8, pollset->fd_count * 3 / 2);
-    pollset->fds =
-        gpr_realloc(pollset->fds, sizeof(grpc_fd *) * pollset->fd_capacity);
+    pollset->fds = (grpc_fd **)gpr_realloc(
+        pollset->fds, sizeof(grpc_fd *) * pollset->fd_capacity);
   }
   pollset->fds[pollset->fd_count++] = fd;
   GRPC_FD_REF(fd, "multipoller");
-  pollset_kick(pollset, NULL);
+  pollset_kick(exec_ctx, pollset, NULL);
 exit:
   gpr_mu_unlock(&pollset->mu);
 }
@@ -894,7 +899,8 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
     worker.wakeup_fd = pollset->local_wakeup_cache;
     pollset->local_wakeup_cache = worker.wakeup_fd->next;
   } else {
-    worker.wakeup_fd = gpr_malloc(sizeof(*worker.wakeup_fd));
+    worker.wakeup_fd =
+        (grpc_cached_wakeup_fd *)gpr_malloc(sizeof(*worker.wakeup_fd));
     error = grpc_wakeup_fd_init(&worker.wakeup_fd->fd);
     if (error != GRPC_ERROR_NONE) {
       GRPC_LOG_IF_ERROR("pollset_work", GRPC_ERROR_REF(error));
@@ -949,8 +955,8 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
         const size_t pfd_size = sizeof(*pfds) * (pollset->fd_count + 2);
         const size_t watch_size = sizeof(*watchers) * (pollset->fd_count + 2);
         void *buf = gpr_malloc(pfd_size + watch_size);
-        pfds = buf;
-        watchers = (void *)((char *)buf + pfd_size);
+        pfds = (struct pollfd *)buf;
+        watchers = (grpc_fd_watcher *)(void *)((char *)buf + pfd_size);
       }
 
       fd_count = 0;
@@ -983,9 +989,14 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
       /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
          even going into the blocking annotation if possible */
       GRPC_SCHEDULING_START_BLOCKING_REGION;
+      GRPC_STATS_INC_SYSCALL_POLL(exec_ctx);
       r = grpc_poll_function(pfds, pfd_count, timeout);
       GRPC_SCHEDULING_END_BLOCKING_REGION;
 
+      if (GRPC_TRACER_ON(grpc_polling_trace)) {
+        gpr_log(GPR_DEBUG, "%p poll=%d", pollset, r);
+      }
+
       if (r < 0) {
         if (errno != EINTR) {
           work_combine_error(&error, GRPC_OS_ERROR(errno, "poll"));
@@ -1006,6 +1017,9 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
         }
       } else {
         if (pfds[0].revents & POLLIN_CHECK) {
+          if (GRPC_TRACER_ON(grpc_polling_trace)) {
+            gpr_log(GPR_DEBUG, "%p: got_wakeup", pollset);
+          }
           work_combine_error(
               &error, grpc_wakeup_fd_consume_wakeup(&worker.wakeup_fd->fd));
         }
@@ -1013,6 +1027,11 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
           if (watchers[i].fd == NULL) {
             fd_end_poll(exec_ctx, &watchers[i], 0, 0, NULL);
           } else {
+            if (GRPC_TRACER_ON(grpc_polling_trace)) {
+              gpr_log(GPR_DEBUG, "%p got_event: %d r:%d w:%d [%d]", pollset,
+                      pfds[i].fd, (pfds[i].revents & POLLIN_CHECK) != 0,
+                      (pfds[i].revents & POLLOUT_CHECK) != 0, pfds[i].revents);
+            }
             fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK,
                         pfds[i].revents & POLLOUT_CHECK, pollset);
           }
@@ -1068,7 +1087,7 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   /* check shutdown conditions */
   if (pollset->shutting_down) {
     if (pollset_has_workers(pollset)) {
-      pollset_kick(pollset, NULL);
+      pollset_kick(exec_ctx, pollset, NULL);
     } else if (!pollset->called_shutdown && !pollset_has_observers(pollset)) {
       pollset->called_shutdown = 1;
       gpr_mu_unlock(&pollset->mu);
@@ -1097,7 +1116,7 @@ static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   GPR_ASSERT(!pollset->shutting_down);
   pollset->shutting_down = 1;
   pollset->shutdown_done = closure;
-  pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+  pollset_kick(exec_ctx, pollset, GRPC_POLLSET_KICK_BROADCAST);
   if (!pollset_has_workers(pollset)) {
     GRPC_CLOSURE_LIST_SCHED(exec_ctx, &pollset->idle_jobs);
   }
@@ -1129,7 +1148,8 @@ static int poll_deadline_to_millis_timeout(gpr_timespec deadline,
  */
 
 static grpc_pollset_set *pollset_set_create(void) {
-  grpc_pollset_set *pollset_set = gpr_zalloc(sizeof(*pollset_set));
+  grpc_pollset_set *pollset_set =
+      (grpc_pollset_set *)gpr_zalloc(sizeof(*pollset_set));
   gpr_mu_init(&pollset_set->mu);
   return pollset_set;
 }
@@ -1172,9 +1192,9 @@ static void pollset_set_add_pollset(grpc_exec_ctx *exec_ctx,
   if (pollset_set->pollset_count == pollset_set->pollset_capacity) {
     pollset_set->pollset_capacity =
         GPR_MAX(8, 2 * pollset_set->pollset_capacity);
-    pollset_set->pollsets =
-        gpr_realloc(pollset_set->pollsets, pollset_set->pollset_capacity *
-                                               sizeof(*pollset_set->pollsets));
+    pollset_set->pollsets = (grpc_pollset **)gpr_realloc(
+        pollset_set->pollsets,
+        pollset_set->pollset_capacity * sizeof(*pollset_set->pollsets));
   }
   pollset_set->pollsets[pollset_set->pollset_count++] = pollset;
   for (i = 0, j = 0; i < pollset_set->fd_count; i++) {
@@ -1223,9 +1243,9 @@ static void pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(&bag->mu);
   if (bag->pollset_set_count == bag->pollset_set_capacity) {
     bag->pollset_set_capacity = GPR_MAX(8, 2 * bag->pollset_set_capacity);
-    bag->pollset_sets =
-        gpr_realloc(bag->pollset_sets,
-                    bag->pollset_set_capacity * sizeof(*bag->pollset_sets));
+    bag->pollset_sets = (grpc_pollset_set **)gpr_realloc(
+        bag->pollset_sets,
+        bag->pollset_set_capacity * sizeof(*bag->pollset_sets));
   }
   bag->pollset_sets[bag->pollset_set_count++] = item;
   for (i = 0, j = 0; i < bag->fd_count; i++) {
@@ -1262,7 +1282,7 @@ static void pollset_set_add_fd(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(&pollset_set->mu);
   if (pollset_set->fd_count == pollset_set->fd_capacity) {
     pollset_set->fd_capacity = GPR_MAX(8, 2 * pollset_set->fd_capacity);
-    pollset_set->fds = gpr_realloc(
+    pollset_set->fds = (grpc_fd **)gpr_realloc(
         pollset_set->fds, pollset_set->fd_capacity * sizeof(*pollset_set->fds));
   }
   GRPC_FD_REF(fd, "pollset_set");
@@ -1316,11 +1336,12 @@ static void cache_insert_locked(poll_args *args) {
 }
 
 static void init_result(poll_args *pargs) {
-  pargs->result = gpr_malloc(sizeof(poll_result));
+  pargs->result = (poll_result *)gpr_malloc(sizeof(poll_result));
   gpr_ref_init(&pargs->result->refcount, 1);
   pargs->result->watchers = NULL;
   pargs->result->watchcount = 0;
-  pargs->result->fds = gpr_malloc(sizeof(struct pollfd) * pargs->nfds);
+  pargs->result->fds =
+      (struct pollfd *)gpr_malloc(sizeof(struct pollfd) * pargs->nfds);
   memcpy(pargs->result->fds, pargs->fds, sizeof(struct pollfd) * pargs->nfds);
   pargs->result->nfds = pargs->nfds;
   pargs->result->retval = 0;
@@ -1359,7 +1380,7 @@ static poll_args *get_poller_locked(struct pollfd *fds, nfds_t count) {
     return pargs;
   }
 
-  poll_args *pargs = gpr_malloc(sizeof(struct poll_args));
+  poll_args *pargs = (poll_args *)gpr_malloc(sizeof(struct poll_args));
   gpr_cv_init(&pargs->trigger);
   pargs->fds = fds;
   pargs->nfds = count;
@@ -1406,7 +1427,8 @@ static void cache_poller_locked(poll_args *args) {
     poll_args **old_active_pollers = poll_cache.active_pollers;
     poll_cache.size = poll_cache.size * 2;
     poll_cache.count = 0;
-    poll_cache.active_pollers = gpr_malloc(sizeof(void *) * poll_cache.size);
+    poll_cache.active_pollers =
+        (poll_args **)gpr_malloc(sizeof(void *) * poll_cache.size);
     for (unsigned int i = 0; i < poll_cache.size; i++) {
       poll_cache.active_pollers[i] = NULL;
     }
@@ -1511,17 +1533,17 @@ static int cvfd_poll(struct pollfd *fds, nfds_t nfds, int timeout) {
   nfds_t nsockfds = 0;
   poll_result *result = NULL;
   gpr_mu_lock(&g_cvfds.mu);
-  pollcv = gpr_malloc(sizeof(cv_node));
+  pollcv = (cv_node *)gpr_malloc(sizeof(cv_node));
   pollcv->next = NULL;
   gpr_cv pollcv_cv;
   gpr_cv_init(&pollcv_cv);
   pollcv->cv = &pollcv_cv;
-  cv_node *fd_cvs = gpr_malloc(nfds * sizeof(cv_node));
+  cv_node *fd_cvs = (cv_node *)gpr_malloc(nfds * sizeof(cv_node));
 
   for (i = 0; i < nfds; i++) {
     fds[i].revents = 0;
     if (fds[i].fd < 0 && (fds[i].events & POLLIN)) {
-      idx = FD_TO_IDX(fds[i].fd);
+      idx = GRPC_FD_TO_IDX(fds[i].fd);
       fd_cvs[i].cv = &pollcv_cv;
       fd_cvs[i].prev = NULL;
       fd_cvs[i].next = g_cvfds.cvfds[idx].cvs;
@@ -1548,7 +1570,8 @@ static int cvfd_poll(struct pollfd *fds, nfds_t nfds, int timeout) {
 
   res = 0;
   if (!skip_poll && nsockfds > 0) {
-    struct pollfd *pollfds = gpr_malloc(sizeof(struct pollfd) * nsockfds);
+    struct pollfd *pollfds =
+        (struct pollfd *)gpr_malloc(sizeof(struct pollfd) * nsockfds);
     idx = 0;
     for (i = 0; i < nfds; i++) {
       if (fds[i].fd >= 0) {
@@ -1583,8 +1606,8 @@ static int cvfd_poll(struct pollfd *fds, nfds_t nfds, int timeout) {
   idx = 0;
   for (i = 0; i < nfds; i++) {
     if (fds[i].fd < 0 && (fds[i].events & POLLIN)) {
-      remove_cvn(&g_cvfds.cvfds[FD_TO_IDX(fds[i].fd)].cvs, &(fd_cvs[i]));
-      if (g_cvfds.cvfds[FD_TO_IDX(fds[i].fd)].is_set) {
+      remove_cvn(&g_cvfds.cvfds[GRPC_FD_TO_IDX(fds[i].fd)].cvs, &(fd_cvs[i]));
+      if (g_cvfds.cvfds[GRPC_FD_TO_IDX(fds[i].fd)].is_set) {
         fds[i].revents = POLLIN;
         if (res >= 0) res++;
       }
@@ -1611,7 +1634,8 @@ static void global_cv_fd_table_init() {
   gpr_cv_init(&g_cvfds.shutdown_cv);
   gpr_ref_init(&g_cvfds.pollcount, 1);
   g_cvfds.size = CV_DEFAULT_TABLE_SIZE;
-  g_cvfds.cvfds = gpr_malloc(sizeof(fd_node) * CV_DEFAULT_TABLE_SIZE);
+  g_cvfds.cvfds =
+      (fd_node *)gpr_malloc(sizeof(fd_node) * CV_DEFAULT_TABLE_SIZE);
   g_cvfds.free_fds = NULL;
   thread_grace = gpr_time_from_millis(POLLCV_THREAD_GRACE_MS, GPR_TIMESPAN);
   for (int i = 0; i < CV_DEFAULT_TABLE_SIZE; i++) {
@@ -1628,7 +1652,7 @@ static void global_cv_fd_table_init() {
   poll_cache.size = 32;
   poll_cache.count = 0;
   poll_cache.free_pollers = NULL;
-  poll_cache.active_pollers = gpr_malloc(sizeof(void *) * 32);
+  poll_cache.active_pollers = (poll_args **)gpr_malloc(sizeof(void *) * 32);
   for (unsigned int i = 0; i < poll_cache.size; i++) {
     poll_cache.active_pollers[i] = NULL;
   }
@@ -1668,34 +1692,34 @@ static void shutdown_engine(void) {
 }
 
 static const grpc_event_engine_vtable vtable = {
-    .pollset_size = sizeof(grpc_pollset),
-
-    .fd_create = fd_create,
-    .fd_wrapped_fd = fd_wrapped_fd,
-    .fd_orphan = fd_orphan,
-    .fd_shutdown = fd_shutdown,
-    .fd_is_shutdown = fd_is_shutdown,
-    .fd_notify_on_read = fd_notify_on_read,
-    .fd_notify_on_write = fd_notify_on_write,
-    .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset,
-
-    .pollset_init = pollset_init,
-    .pollset_shutdown = pollset_shutdown,
-    .pollset_destroy = pollset_destroy,
-    .pollset_work = pollset_work,
-    .pollset_kick = pollset_kick,
-    .pollset_add_fd = pollset_add_fd,
-
-    .pollset_set_create = pollset_set_create,
-    .pollset_set_destroy = pollset_set_destroy,
-    .pollset_set_add_pollset = pollset_set_add_pollset,
-    .pollset_set_del_pollset = pollset_set_del_pollset,
-    .pollset_set_add_pollset_set = pollset_set_add_pollset_set,
-    .pollset_set_del_pollset_set = pollset_set_del_pollset_set,
-    .pollset_set_add_fd = pollset_set_add_fd,
-    .pollset_set_del_fd = pollset_set_del_fd,
-
-    .shutdown_engine = shutdown_engine,
+    sizeof(grpc_pollset),
+
+    fd_create,
+    fd_wrapped_fd,
+    fd_orphan,
+    fd_shutdown,
+    fd_notify_on_read,
+    fd_notify_on_write,
+    fd_is_shutdown,
+    fd_get_read_notifier_pollset,
+
+    pollset_init,
+    pollset_shutdown,
+    pollset_destroy,
+    pollset_work,
+    pollset_kick,
+    pollset_add_fd,
+
+    pollset_set_create,
+    pollset_set_destroy,
+    pollset_set_add_pollset,
+    pollset_set_del_pollset,
+    pollset_set_add_pollset_set,
+    pollset_set_del_pollset_set,
+    pollset_set_add_fd,
+    pollset_set_del_fd,
+
+    shutdown_engine,
 };
 
 const grpc_event_engine_vtable *grpc_init_poll_posix(bool explicit_request) {
diff --git a/src/core/lib/iomgr/ev_posix.c b/src/core/lib/iomgr/ev_posix.c
index 91f8cd5482..4d3ae2228e 100644
--- a/src/core/lib/iomgr/ev_posix.c
+++ b/src/core/lib/iomgr/ev_posix.c
@@ -31,8 +31,6 @@
 
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/iomgr/ev_epoll1_linux.h"
-#include "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h"
-#include "src/core/lib/iomgr/ev_epoll_thread_pool_linux.h"
 #include "src/core/lib/iomgr/ev_epollex_linux.h"
 #include "src/core/lib/iomgr/ev_epollsig_linux.h"
 #include "src/core/lib/iomgr/ev_poll_posix.h"
@@ -64,10 +62,8 @@ typedef struct {
 } event_engine_factory;
 
 static const event_engine_factory g_factories[] = {
-    {"epollsig", grpc_init_epollsig_linux},
     {"epoll1", grpc_init_epoll1_linux},
-    {"epoll-threadpool", grpc_init_epoll_thread_pool_linux},
-    {"epoll-limited", grpc_init_epoll_limited_pollers_linux},
+    {"epollsig", grpc_init_epollsig_linux},
     {"poll", grpc_init_poll_posix},
     {"poll-cv", grpc_init_poll_cv_posix},
     {"epollex", grpc_init_epollex_linux},
@@ -80,10 +76,10 @@ static void add(const char *beg, const char *end, char ***ss, size_t *ns) {
   size_t len;
   GPR_ASSERT(end >= beg);
   len = (size_t)(end - beg);
-  s = gpr_malloc(len + 1);
+  s = (char *)gpr_malloc(len + 1);
   memcpy(s, beg, len);
   s[len] = 0;
-  *ss = gpr_realloc(*ss, sizeof(char **) * np);
+  *ss = (char **)gpr_realloc(*ss, sizeof(char **) * np);
   (*ss)[n] = s;
   *ns = np;
 }
@@ -214,9 +210,9 @@ grpc_error *grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   return g_event_engine->pollset_work(exec_ctx, pollset, worker, now, deadline);
 }
 
-grpc_error *grpc_pollset_kick(grpc_pollset *pollset,
+grpc_error *grpc_pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                               grpc_pollset_worker *specific_worker) {
-  return g_event_engine->pollset_kick(pollset, specific_worker);
+  return g_event_engine->pollset_kick(exec_ctx, pollset, specific_worker);
 }
 
 void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
diff --git a/src/core/lib/iomgr/ev_posix.h b/src/core/lib/iomgr/ev_posix.h
index 1108e46ef8..1ff2ff1413 100644
--- a/src/core/lib/iomgr/ev_posix.h
+++ b/src/core/lib/iomgr/ev_posix.h
@@ -54,7 +54,7 @@ typedef struct grpc_event_engine_vtable {
   grpc_error *(*pollset_work)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                               grpc_pollset_worker **worker, gpr_timespec now,
                               gpr_timespec deadline);
-  grpc_error *(*pollset_kick)(grpc_pollset *pollset,
+  grpc_error *(*pollset_kick)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                               grpc_pollset_worker *specific_worker);
   void (*pollset_add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                          struct grpc_fd *fd);
diff --git a/src/core/lib/iomgr/exec_ctx.h b/src/core/lib/iomgr/exec_ctx.h
index a0d2a965d5..c89792c8c4 100644
--- a/src/core/lib/iomgr/exec_ctx.h
+++ b/src/core/lib/iomgr/exec_ctx.h
@@ -19,6 +19,7 @@
 #ifndef GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
 #define GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
 
+#include <grpc/support/cpu.h>
 #include "src/core/lib/iomgr/closure.h"
 
 /* #define GRPC_EXECUTION_CONTEXT_SANITIZER 1 */
@@ -62,6 +63,7 @@ struct grpc_exec_ctx {
   /** last active combiner in the active combiner list */
   grpc_combiner *last_combiner;
   uintptr_t flags;
+  unsigned starting_cpu;
   void *check_ready_to_finish_arg;
   bool (*check_ready_to_finish)(grpc_exec_ctx *exec_ctx, void *arg);
 };
@@ -69,7 +71,10 @@ struct grpc_exec_ctx {
 /* initializer for grpc_exec_ctx:
    prefer to use GRPC_EXEC_CTX_INIT whenever possible */
 #define GRPC_EXEC_CTX_INITIALIZER(flags, finish_check, finish_check_arg) \
-  { GRPC_CLOSURE_LIST_INIT, NULL, NULL, flags, finish_check_arg, finish_check }
+  {                                                                      \
+    GRPC_CLOSURE_LIST_INIT, NULL, NULL, flags, gpr_cpu_current_cpu(),    \
+        finish_check_arg, finish_check                                   \
+  }
 
 /* initialize an execution context at the top level of an API call into grpc
    (this is safe to use elsewhere, though possibly not as efficient) */
diff --git a/src/core/lib/iomgr/executor.c b/src/core/lib/iomgr/executor.c
index 7621a7fe75..2439f15a8a 100644
--- a/src/core/lib/iomgr/executor.c
+++ b/src/core/lib/iomgr/executor.c
@@ -28,18 +28,18 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/support/spinlock.h"
 
-#define MAX_DEPTH 2
-
 typedef struct {
   gpr_mu mu;
   gpr_cv cv;
   grpc_closure_list elems;
-  size_t depth;
   bool shutdown;
+  bool queued_long_job;
   gpr_thd_id id;
+  grpc_closure_list local_elems;
 } thread_state;
 
 static thread_state *g_thread_state;
@@ -49,25 +49,40 @@ static gpr_spinlock g_adding_thread_lock = GPR_SPINLOCK_STATIC_INITIALIZER;
 
 GPR_TLS_DECL(g_this_thread_state);
 
+static grpc_tracer_flag executor_trace =
+    GRPC_TRACER_INITIALIZER(false, "executor");
+
 static void executor_thread(void *arg);
 
-static size_t run_closures(grpc_exec_ctx *exec_ctx, grpc_closure_list list) {
-  size_t n = 0;
+static void run_closures(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
+  int n = 0;  // number of closures executed
 
-  grpc_closure *c = list.head;
-  while (c != NULL) {
-    grpc_closure *next = c->next_data.next;
-    grpc_error *error = c->error_data.error;
+  while (!grpc_closure_list_empty(*list)) {
+    grpc_closure *c = list->head;
+    grpc_closure_list_init(list);
+    while (c != NULL) {
+      grpc_closure *next = c->next_data.next;
+      grpc_error *error = c->error_data.error;
+      if (GRPC_TRACER_ON(executor_trace)) {
 #ifndef NDEBUG
-    c->scheduled = false;
+        gpr_log(GPR_DEBUG, "EXECUTOR: run %p [created by %s:%d]", c,
+                c->file_created, c->line_created);
+#else
+        gpr_log(GPR_DEBUG, "EXECUTOR: run %p", c);
 #endif
-    c->cb(exec_ctx, c->cb_arg, error);
-    GRPC_ERROR_UNREF(error);
-    c = next;
-    n++;
+      }
+#ifndef NDEBUG
+      c->scheduled = false;
+#endif
+      n++;
+      c->cb(exec_ctx, c->cb_arg, error);
+      GRPC_ERROR_UNREF(error);
+      c = next;
+      grpc_exec_ctx_flush(exec_ctx);
+    }
   }
 
-  return n;
+  GRPC_STATS_INC_EXECUTOR_CLOSURES_PER_WAKEUP(exec_ctx, n);
 }
 
 bool grpc_executor_is_threaded() {
@@ -81,7 +96,8 @@ void grpc_executor_set_threading(grpc_exec_ctx *exec_ctx, bool threading) {
     g_max_threads = GPR_MAX(1, 2 * gpr_cpu_num_cores());
     gpr_atm_no_barrier_store(&g_cur_threads, 1);
     gpr_tls_init(&g_this_thread_state);
-    g_thread_state = gpr_zalloc(sizeof(thread_state) * g_max_threads);
+    g_thread_state =
+        (thread_state *)gpr_zalloc(sizeof(thread_state) * g_max_threads);
     for (size_t i = 0; i < g_max_threads; i++) {
       gpr_mu_init(&g_thread_state[i].mu);
       gpr_cv_init(&g_thread_state[i].cv);
@@ -111,7 +127,7 @@ void grpc_executor_set_threading(grpc_exec_ctx *exec_ctx, bool threading) {
     for (size_t i = 0; i < g_max_threads; i++) {
       gpr_mu_destroy(&g_thread_state[i].mu);
       gpr_cv_destroy(&g_thread_state[i].cv);
-      run_closures(exec_ctx, g_thread_state[i].elems);
+      run_closures(exec_ctx, &g_thread_state[i].elems);
     }
     gpr_free(g_thread_state);
     gpr_tls_destroy(&g_this_thread_state);
@@ -119,6 +135,7 @@ void grpc_executor_set_threading(grpc_exec_ctx *exec_ctx, bool threading) {
 }
 
 void grpc_executor_init(grpc_exec_ctx *exec_ctx) {
+  grpc_register_tracer(&executor_trace);
   gpr_atm_no_barrier_store(&g_cur_threads, 0);
   grpc_executor_set_threading(exec_ctx, true);
 }
@@ -128,68 +145,166 @@ void grpc_executor_shutdown(grpc_exec_ctx *exec_ctx) {
 }
 
 static void executor_thread(void *arg) {
-  thread_state *ts = arg;
+  thread_state *ts = (thread_state *)arg;
   gpr_tls_set(&g_this_thread_state, (intptr_t)ts);
 
   grpc_exec_ctx exec_ctx =
       GRPC_EXEC_CTX_INITIALIZER(0, grpc_never_ready_to_finish, NULL);
 
-  size_t subtract_depth = 0;
+  GRPC_STATS_INC_EXECUTOR_THREADS_CREATED(&exec_ctx);
+
+  bool used = false;
   for (;;) {
+    if (GRPC_TRACER_ON(executor_trace)) {
+      gpr_log(GPR_DEBUG, "EXECUTOR[%d]: step", (int)(ts - g_thread_state));
+    }
     gpr_mu_lock(&ts->mu);
-    ts->depth -= subtract_depth;
     while (grpc_closure_list_empty(ts->elems) && !ts->shutdown) {
+      ts->queued_long_job = false;
       gpr_cv_wait(&ts->cv, &ts->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
     }
     if (ts->shutdown) {
+      if (GRPC_TRACER_ON(executor_trace)) {
+        gpr_log(GPR_DEBUG, "EXECUTOR[%d]: shutdown",
+                (int)(ts - g_thread_state));
+      }
       gpr_mu_unlock(&ts->mu);
       break;
     }
-    grpc_closure_list exec = ts->elems;
+    if (!used) {
+      GRPC_STATS_INC_EXECUTOR_THREADS_USED(&exec_ctx);
+      used = true;
+    }
+    GRPC_STATS_INC_EXECUTOR_QUEUE_DRAINED(&exec_ctx);
+    GPR_ASSERT(grpc_closure_list_empty(ts->local_elems));
+    ts->local_elems = ts->elems;
     ts->elems = (grpc_closure_list)GRPC_CLOSURE_LIST_INIT;
     gpr_mu_unlock(&ts->mu);
+    if (GRPC_TRACER_ON(executor_trace)) {
+      gpr_log(GPR_DEBUG, "EXECUTOR[%d]: execute", (int)(ts - g_thread_state));
+    }
 
-    subtract_depth = run_closures(&exec_ctx, exec);
-    grpc_exec_ctx_flush(&exec_ctx);
+    run_closures(&exec_ctx, &ts->local_elems);
   }
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void executor_push(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
-                          grpc_error *error) {
-  size_t cur_thread_count = (size_t)gpr_atm_no_barrier_load(&g_cur_threads);
-  if (cur_thread_count == 0) {
-    grpc_closure_list_append(&exec_ctx->closure_list, closure, error);
-    return;
-  }
-  thread_state *ts = (thread_state *)gpr_tls_get(&g_this_thread_state);
-  if (ts == NULL) {
-    ts = &g_thread_state[GPR_HASH_POINTER(exec_ctx, cur_thread_count)];
-  }
-  gpr_mu_lock(&ts->mu);
-  if (grpc_closure_list_empty(ts->elems)) {
-    gpr_cv_signal(&ts->cv);
+                          grpc_error *error, bool is_short) {
+  bool retry_push;
+  if (is_short) {
+    GRPC_STATS_INC_EXECUTOR_SCHEDULED_SHORT_ITEMS(exec_ctx);
+  } else {
+    GRPC_STATS_INC_EXECUTOR_SCHEDULED_LONG_ITEMS(exec_ctx);
   }
-  grpc_closure_list_append(&ts->elems, closure, error);
-  ts->depth++;
-  bool try_new_thread = ts->depth > MAX_DEPTH &&
-                        cur_thread_count < g_max_threads && !ts->shutdown;
-  gpr_mu_unlock(&ts->mu);
-  if (try_new_thread && gpr_spinlock_trylock(&g_adding_thread_lock)) {
-    cur_thread_count = (size_t)gpr_atm_no_barrier_load(&g_cur_threads);
-    if (cur_thread_count < g_max_threads) {
-      gpr_atm_no_barrier_store(&g_cur_threads, cur_thread_count + 1);
-
-      gpr_thd_options opt = gpr_thd_options_default();
-      gpr_thd_options_set_joinable(&opt);
-      gpr_thd_new(&g_thread_state[cur_thread_count].id, executor_thread,
-                  &g_thread_state[cur_thread_count], &opt);
+  do {
+    retry_push = false;
+    size_t cur_thread_count = (size_t)gpr_atm_no_barrier_load(&g_cur_threads);
+    if (cur_thread_count == 0) {
+      if (GRPC_TRACER_ON(executor_trace)) {
+#ifndef NDEBUG
+        gpr_log(GPR_DEBUG, "EXECUTOR: schedule %p (created %s:%d) inline",
+                closure, closure->file_created, closure->line_created);
+#else
+        gpr_log(GPR_DEBUG, "EXECUTOR: schedule %p inline", closure);
+#endif
+      }
+      grpc_closure_list_append(&exec_ctx->closure_list, closure, error);
+      return;
     }
-    gpr_spinlock_unlock(&g_adding_thread_lock);
-  }
+    thread_state *ts = (thread_state *)gpr_tls_get(&g_this_thread_state);
+    if (ts == NULL) {
+      ts = &g_thread_state[GPR_HASH_POINTER(exec_ctx, cur_thread_count)];
+    } else {
+      GRPC_STATS_INC_EXECUTOR_SCHEDULED_TO_SELF(exec_ctx);
+      if (is_short) {
+        grpc_closure_list_append(&ts->local_elems, closure, error);
+        return;
+      }
+    }
+    thread_state *orig_ts = ts;
+
+    bool try_new_thread;
+    for (;;) {
+      if (GRPC_TRACER_ON(executor_trace)) {
+#ifndef NDEBUG
+        gpr_log(
+            GPR_DEBUG,
+            "EXECUTOR: try to schedule %p (%s) (created %s:%d) to thread %d",
+            closure, is_short ? "short" : "long", closure->file_created,
+            closure->line_created, (int)(ts - g_thread_state));
+#else
+        gpr_log(GPR_DEBUG, "EXECUTOR: try to schedule %p (%s) to thread %d",
+                closure, is_short ? "short" : "long",
+                (int)(ts - g_thread_state));
+#endif
+      }
+      gpr_mu_lock(&ts->mu);
+      if (ts->queued_long_job) {
+        // if there's a long job queued, we never queue anything else to this
+        // queue (since long jobs can take 'infinite' time and we need to
+        // guarantee no starvation)
+        // ... spin through queues and try again
+        gpr_mu_unlock(&ts->mu);
+        size_t idx = (size_t)(ts - g_thread_state);
+        ts = &g_thread_state[(idx + 1) % cur_thread_count];
+        if (ts == orig_ts) {
+          retry_push = true;
+          try_new_thread = true;
+          break;
+        }
+        continue;
+      }
+      if (grpc_closure_list_empty(ts->elems)) {
+        GRPC_STATS_INC_EXECUTOR_WAKEUP_INITIATED(exec_ctx);
+        gpr_cv_signal(&ts->cv);
+      }
+      grpc_closure_list_append(&ts->elems, closure, error);
+      try_new_thread = ts->elems.head != closure &&
+                       cur_thread_count < g_max_threads && !ts->shutdown;
+      if (!is_short) ts->queued_long_job = true;
+      gpr_mu_unlock(&ts->mu);
+      break;
+    }
+    if (try_new_thread && gpr_spinlock_trylock(&g_adding_thread_lock)) {
+      cur_thread_count = (size_t)gpr_atm_no_barrier_load(&g_cur_threads);
+      if (cur_thread_count < g_max_threads) {
+        gpr_atm_no_barrier_store(&g_cur_threads, cur_thread_count + 1);
+
+        gpr_thd_options opt = gpr_thd_options_default();
+        gpr_thd_options_set_joinable(&opt);
+        gpr_thd_new(&g_thread_state[cur_thread_count].id, executor_thread,
+                    &g_thread_state[cur_thread_count], &opt);
+      }
+      gpr_spinlock_unlock(&g_adding_thread_lock);
+    }
+    if (retry_push) {
+      GRPC_STATS_INC_EXECUTOR_PUSH_RETRIES(exec_ctx);
+    }
+  } while (retry_push);
+}
+
+static void executor_push_short(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                                grpc_error *error) {
+  executor_push(exec_ctx, closure, error, true);
+}
+
+static void executor_push_long(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                               grpc_error *error) {
+  executor_push(exec_ctx, closure, error, false);
 }
 
-static const grpc_closure_scheduler_vtable executor_vtable = {
-    executor_push, executor_push, "executor"};
-static grpc_closure_scheduler executor_scheduler = {&executor_vtable};
-grpc_closure_scheduler *grpc_executor_scheduler = &executor_scheduler;
+static const grpc_closure_scheduler_vtable executor_vtable_short = {
+    executor_push_short, executor_push_short, "executor"};
+static grpc_closure_scheduler executor_scheduler_short = {
+    &executor_vtable_short};
+
+static const grpc_closure_scheduler_vtable executor_vtable_long = {
+    executor_push_long, executor_push_long, "executor"};
+static grpc_closure_scheduler executor_scheduler_long = {&executor_vtable_long};
+
+grpc_closure_scheduler *grpc_executor_scheduler(
+    grpc_executor_job_length length) {
+  return length == GRPC_EXECUTOR_SHORT ? &executor_scheduler_short
+                                       : &executor_scheduler_long;
+}
diff --git a/src/core/lib/iomgr/executor.h b/src/core/lib/iomgr/executor.h
index c3382a0a12..0412c02790 100644
--- a/src/core/lib/iomgr/executor.h
+++ b/src/core/lib/iomgr/executor.h
@@ -21,6 +21,11 @@
 
 #include "src/core/lib/iomgr/closure.h"
 
+typedef enum {
+  GRPC_EXECUTOR_SHORT,
+  GRPC_EXECUTOR_LONG
+} grpc_executor_job_length;
+
 /** Initialize the global executor.
  *
  * This mechanism is meant to outsource work (grpc_closure instances) to a
@@ -28,7 +33,7 @@
  * non-blocking solution available. */
 void grpc_executor_init(grpc_exec_ctx *exec_ctx);
 
-extern grpc_closure_scheduler *grpc_executor_scheduler;
+grpc_closure_scheduler *grpc_executor_scheduler(grpc_executor_job_length);
 
 /** Shutdown the executor, running all pending work as part of the call */
 void grpc_executor_shutdown(grpc_exec_ctx *exec_ctx);
diff --git a/src/core/lib/iomgr/iocp_windows.c b/src/core/lib/iomgr/iocp_windows.c
index e343f8a794..c082179c0b 100644
--- a/src/core/lib/iomgr/iocp_windows.c
+++ b/src/core/lib/iomgr/iocp_windows.c
@@ -27,6 +27,7 @@
 #include <grpc/support/log_windows.h>
 #include <grpc/support/thd.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/iocp_windows.h"
 #include "src/core/lib/iomgr/iomgr_internal.h"
 #include "src/core/lib/iomgr/socket_windows.h"
@@ -65,6 +66,7 @@ grpc_iocp_work_status grpc_iocp_work(grpc_exec_ctx *exec_ctx,
   LPOVERLAPPED overlapped;
   grpc_winsocket *socket;
   grpc_winsocket_callback_info *info;
+  GRPC_STATS_INC_SYSCALL_POLL(exec_ctx);
   success = GetQueuedCompletionStatus(
       g_iocp, &bytes, &completion_key, &overlapped,
       deadline_to_millis_timeout(deadline, gpr_now(deadline.clock_type)));
diff --git a/src/core/lib/iomgr/iomgr.c b/src/core/lib/iomgr/iomgr.c
index 3d19953eeb..f63f190155 100644
--- a/src/core/lib/iomgr/iomgr.c
+++ b/src/core/lib/iomgr/iomgr.c
@@ -50,7 +50,7 @@ void grpc_iomgr_init(grpc_exec_ctx *exec_ctx) {
   grpc_executor_init(exec_ctx);
   grpc_timer_list_init(gpr_now(GPR_CLOCK_MONOTONIC));
   g_root_object.next = g_root_object.prev = &g_root_object;
-  g_root_object.name = "root";
+  g_root_object.name = (char *)"root";
   grpc_network_status_init();
   grpc_iomgr_platform_init();
 }
@@ -164,13 +164,7 @@ void grpc_iomgr_unregister_object(grpc_iomgr_object *obj) {
 
 bool grpc_iomgr_abort_on_leaks(void) {
   char *env = gpr_getenv("GRPC_ABORT_ON_LEAKS");
-  if (env == NULL) return false;
-  static const char *truthy[] = {"yes",  "Yes",  "YES", "true",
-                                 "True", "TRUE", "1"};
-  bool should_we = false;
-  for (size_t i = 0; i < GPR_ARRAY_SIZE(truthy); i++) {
-    if (0 == strcmp(env, truthy[i])) should_we = true;
-  }
+  bool should_we = gpr_is_true(env);
   gpr_free(env);
   return should_we;
 }
diff --git a/src/core/lib/iomgr/is_epollexclusive_available.c b/src/core/lib/iomgr/is_epollexclusive_available.c
index e8a7d4d52c..d08844c0df 100644
--- a/src/core/lib/iomgr/is_epollexclusive_available.c
+++ b/src/core/lib/iomgr/is_epollexclusive_available.c
@@ -57,12 +57,12 @@ bool grpc_is_epollexclusive_available(void) {
     close(fd);
     return false;
   }
-  struct epoll_event ev = {
-      /* choose events that should cause an error on
-         EPOLLEXCLUSIVE enabled kernels - specifically the combination of
-         EPOLLONESHOT and EPOLLEXCLUSIVE */
-      .events = (uint32_t)(EPOLLET | EPOLLIN | EPOLLEXCLUSIVE | EPOLLONESHOT),
-      .data.ptr = NULL};
+  struct epoll_event ev;
+  /* choose events that should cause an error on
+     EPOLLEXCLUSIVE enabled kernels - specifically the combination of
+     EPOLLONESHOT and EPOLLEXCLUSIVE */
+  ev.events = (uint32_t)(EPOLLET | EPOLLIN | EPOLLEXCLUSIVE | EPOLLONESHOT);
+  ev.data.ptr = NULL;
   if (epoll_ctl(fd, EPOLL_CTL_ADD, evfd, &ev) != 0) {
     if (errno != EINVAL) {
       if (!logged_why_not) {
diff --git a/src/core/lib/iomgr/load_file.c b/src/core/lib/iomgr/load_file.c
index ba77a52afc..0b4d41ea4b 100644
--- a/src/core/lib/iomgr/load_file.c
+++ b/src/core/lib/iomgr/load_file.c
@@ -47,7 +47,8 @@ grpc_error *grpc_load_file(const char *filename, int add_null_terminator,
   /* Converting to size_t on the assumption that it will not fail */
   contents_size = (size_t)ftell(file);
   fseek(file, 0, SEEK_SET);
-  contents = gpr_malloc(contents_size + (add_null_terminator ? 1 : 0));
+  contents = (unsigned char *)gpr_malloc(contents_size +
+                                         (add_null_terminator ? 1 : 0));
   bytes_read = fread(contents, 1, contents_size, file);
   if (bytes_read < contents_size) {
     error = GRPC_OS_ERROR(errno, "fread");
diff --git a/src/core/lib/iomgr/polling_entity.c b/src/core/lib/iomgr/polling_entity.c
index 74d8794af5..8591a5518e 100644
--- a/src/core/lib/iomgr/polling_entity.c
+++ b/src/core/lib/iomgr/polling_entity.c
@@ -25,7 +25,7 @@ grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
     grpc_pollset_set *pollset_set) {
   grpc_polling_entity pollent;
   pollent.pollent.pollset_set = pollset_set;
-  pollent.tag = POPS_POLLSET_SET;
+  pollent.tag = GRPC_POLLS_POLLSET_SET;
   return pollent;
 }
 
@@ -33,12 +33,12 @@ grpc_polling_entity grpc_polling_entity_create_from_pollset(
     grpc_pollset *pollset) {
   grpc_polling_entity pollent;
   pollent.pollent.pollset = pollset;
-  pollent.tag = POPS_POLLSET;
+  pollent.tag = GRPC_POLLS_POLLSET;
   return pollent;
 }
 
 grpc_pollset *grpc_polling_entity_pollset(grpc_polling_entity *pollent) {
-  if (pollent->tag == POPS_POLLSET) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
     return pollent->pollent.pollset;
   }
   return NULL;
@@ -46,23 +46,23 @@ grpc_pollset *grpc_polling_entity_pollset(grpc_polling_entity *pollent) {
 
 grpc_pollset_set *grpc_polling_entity_pollset_set(
     grpc_polling_entity *pollent) {
-  if (pollent->tag == POPS_POLLSET_SET) {
+  if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
     return pollent->pollent.pollset_set;
   }
   return NULL;
 }
 
 bool grpc_polling_entity_is_empty(const grpc_polling_entity *pollent) {
-  return pollent->tag == POPS_NONE;
+  return pollent->tag == GRPC_POLLS_NONE;
 }
 
 void grpc_polling_entity_add_to_pollset_set(grpc_exec_ctx *exec_ctx,
                                             grpc_polling_entity *pollent,
                                             grpc_pollset_set *pss_dst) {
-  if (pollent->tag == POPS_POLLSET) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
     GPR_ASSERT(pollent->pollent.pollset != NULL);
     grpc_pollset_set_add_pollset(exec_ctx, pss_dst, pollent->pollent.pollset);
-  } else if (pollent->tag == POPS_POLLSET_SET) {
+  } else if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
     GPR_ASSERT(pollent->pollent.pollset_set != NULL);
     grpc_pollset_set_add_pollset_set(exec_ctx, pss_dst,
                                      pollent->pollent.pollset_set);
@@ -75,10 +75,10 @@ void grpc_polling_entity_add_to_pollset_set(grpc_exec_ctx *exec_ctx,
 void grpc_polling_entity_del_from_pollset_set(grpc_exec_ctx *exec_ctx,
                                               grpc_polling_entity *pollent,
                                               grpc_pollset_set *pss_dst) {
-  if (pollent->tag == POPS_POLLSET) {
+  if (pollent->tag == GRPC_POLLS_POLLSET) {
     GPR_ASSERT(pollent->pollent.pollset != NULL);
     grpc_pollset_set_del_pollset(exec_ctx, pss_dst, pollent->pollent.pollset);
-  } else if (pollent->tag == POPS_POLLSET_SET) {
+  } else if (pollent->tag == GRPC_POLLS_POLLSET_SET) {
     GPR_ASSERT(pollent->pollent.pollset_set != NULL);
     grpc_pollset_set_del_pollset_set(exec_ctx, pss_dst,
                                      pollent->pollent.pollset_set);
diff --git a/src/core/lib/iomgr/polling_entity.h b/src/core/lib/iomgr/polling_entity.h
index 971fd88b42..a161e1fea6 100644
--- a/src/core/lib/iomgr/polling_entity.h
+++ b/src/core/lib/iomgr/polling_entity.h
@@ -22,6 +22,12 @@
 #include "src/core/lib/iomgr/pollset.h"
 #include "src/core/lib/iomgr/pollset_set.h"
 
+typedef enum grpc_pollset_tag {
+  GRPC_POLLS_NONE,
+  GRPC_POLLS_POLLSET,
+  GRPC_POLLS_POLLSET_SET
+} grpc_pollset_tag;
+
 /* A grpc_polling_entity is a pollset-or-pollset_set container. It allows
  * functions that accept a pollset XOR a pollset_set to do so through an
  * abstract interface. No ownership is taken. */
@@ -31,7 +37,7 @@ typedef struct grpc_polling_entity {
     grpc_pollset *pollset;
     grpc_pollset_set *pollset_set;
   } pollent;
-  enum pops_tag { POPS_NONE, POPS_POLLSET, POPS_POLLSET_SET } tag;
+  grpc_pollset_tag tag;
 } grpc_polling_entity;
 
 grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
diff --git a/src/core/lib/iomgr/pollset.h b/src/core/lib/iomgr/pollset.h
index a609a3877a..a0f6b3a9d3 100644
--- a/src/core/lib/iomgr/pollset.h
+++ b/src/core/lib/iomgr/pollset.h
@@ -76,7 +76,7 @@ grpc_error *grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
 
 /* Break one polling thread out of polling work for this pollset.
    If specific_worker is non-NULL, then kick that worker. */
-grpc_error *grpc_pollset_kick(grpc_pollset *pollset,
+grpc_error *grpc_pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                               grpc_pollset_worker *specific_worker)
     GRPC_MUST_USE_RESULT;
 
diff --git a/src/core/lib/iomgr/pollset_uv.c b/src/core/lib/iomgr/pollset_uv.c
index a79fe89d3e..2651325e25 100644
--- a/src/core/lib/iomgr/pollset_uv.c
+++ b/src/core/lib/iomgr/pollset_uv.c
@@ -145,7 +145,7 @@ grpc_error *grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
   return GRPC_ERROR_NONE;
 }
 
-grpc_error *grpc_pollset_kick(grpc_pollset *pollset,
+grpc_error *grpc_pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                               grpc_pollset_worker *specific_worker) {
   GRPC_UV_ASSERT_SAME_THREAD();
   uv_timer_start(dummy_uv_handle, dummy_timer_cb, 0, 0);
diff --git a/src/core/lib/iomgr/pollset_windows.c b/src/core/lib/iomgr/pollset_windows.c
index ea017a6054..eb295d3eeb 100644
--- a/src/core/lib/iomgr/pollset_windows.c
+++ b/src/core/lib/iomgr/pollset_windows.c
@@ -98,7 +98,7 @@ void grpc_pollset_init(grpc_pollset *pollset, gpr_mu **mu) {
 void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                            grpc_closure *closure) {
   pollset->shutting_down = 1;
-  grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+  grpc_pollset_kick(exec_ctx, pollset, GRPC_POLLSET_KICK_BROADCAST);
   if (!pollset->is_iocp_worker) {
     GRPC_CLOSURE_SCHED(exec_ctx, closure, GRPC_ERROR_NONE);
   } else {
@@ -181,7 +181,7 @@ done:
   return GRPC_ERROR_NONE;
 }
 
-grpc_error *grpc_pollset_kick(grpc_pollset *p,
+grpc_error *grpc_pollset_kick(grpc_exec_ctx *exec_ctx, grpc_pollset *p,
                               grpc_pollset_worker *specific_worker) {
   if (specific_worker != NULL) {
     if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
@@ -209,7 +209,7 @@ grpc_error *grpc_pollset_kick(grpc_pollset *p,
     specific_worker =
         pop_front_worker(&p->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
     if (specific_worker != NULL) {
-      grpc_pollset_kick(p, specific_worker);
+      grpc_pollset_kick(exec_ctx, p, specific_worker);
     } else if (p->is_iocp_worker) {
       grpc_iocp_kick();
     } else {
diff --git a/src/core/lib/iomgr/resolve_address_posix.c b/src/core/lib/iomgr/resolve_address_posix.c
index 35dedc23de..60cfeebd47 100644
--- a/src/core/lib/iomgr/resolve_address_posix.c
+++ b/src/core/lib/iomgr/resolve_address_posix.c
@@ -85,7 +85,7 @@ static grpc_error *blocking_resolve_address_impl(
 
   if (s != 0) {
     /* Retry if well-known service name is recognized */
-    char *svc[][2] = {{"http", "80"}, {"https", "443"}};
+    const char *svc[][2] = {{"http", "80"}, {"https", "443"}};
     for (i = 0; i < GPR_ARRAY_SIZE(svc); i++) {
       if (strcmp(port, svc[i][0]) == 0) {
         GRPC_SCHEDULING_START_BLOCKING_REGION;
@@ -112,13 +112,14 @@ static grpc_error *blocking_resolve_address_impl(
   }
 
   /* Success path: set addrs non-NULL, fill it in */
-  *addresses = gpr_malloc(sizeof(grpc_resolved_addresses));
+  *addresses =
+      (grpc_resolved_addresses *)gpr_malloc(sizeof(grpc_resolved_addresses));
   (*addresses)->naddrs = 0;
   for (resp = result; resp != NULL; resp = resp->ai_next) {
     (*addresses)->naddrs++;
   }
-  (*addresses)->addrs =
-      gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs);
+  (*addresses)->addrs = (grpc_resolved_address *)gpr_malloc(
+      sizeof(grpc_resolved_address) * (*addresses)->naddrs);
   i = 0;
   for (resp = result; resp != NULL; resp = resp->ai_next) {
     memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
@@ -153,7 +154,7 @@ typedef struct {
  * grpc_blocking_resolve_address */
 static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp,
                               grpc_error *error) {
-  request *r = rp;
+  request *r = (request *)rp;
   GRPC_CLOSURE_SCHED(
       exec_ctx, r->on_done,
       grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out));
@@ -174,9 +175,9 @@ static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
                                  grpc_pollset_set *interested_parties,
                                  grpc_closure *on_done,
                                  grpc_resolved_addresses **addrs) {
-  request *r = gpr_malloc(sizeof(request));
+  request *r = (request *)gpr_malloc(sizeof(request));
   GRPC_CLOSURE_INIT(&r->request_closure, do_request_thread, r,
-                    grpc_executor_scheduler);
+                    grpc_executor_scheduler(GRPC_EXECUTOR_SHORT));
   r->name = gpr_strdup(name);
   r->default_port = gpr_strdup(default_port);
   r->on_done = on_done;
diff --git a/src/core/lib/iomgr/resolve_address_windows.c b/src/core/lib/iomgr/resolve_address_windows.c
index 45cfd7248d..0cb0029f4e 100644
--- a/src/core/lib/iomgr/resolve_address_windows.c
+++ b/src/core/lib/iomgr/resolve_address_windows.c
@@ -159,7 +159,7 @@ static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
                                  grpc_resolved_addresses **addresses) {
   request *r = gpr_malloc(sizeof(request));
   GRPC_CLOSURE_INIT(&r->request_closure, do_request_thread, r,
-                    grpc_executor_scheduler);
+                    grpc_executor_scheduler(GRPC_EXECUTOR_SHORT));
   r->name = gpr_strdup(name);
   r->default_port = gpr_strdup(default_port);
   r->on_done = on_done;
diff --git a/src/core/lib/iomgr/resource_quota.c b/src/core/lib/iomgr/resource_quota.c
index a31d9eef93..4d69986fbc 100644
--- a/src/core/lib/iomgr/resource_quota.c
+++ b/src/core/lib/iomgr/resource_quota.c
@@ -22,6 +22,7 @@
 #include <stdint.h>
 #include <string.h>
 
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
@@ -241,7 +242,7 @@ static bool rq_reclaim(grpc_exec_ctx *exec_ctx,
                        grpc_resource_quota *resource_quota, bool destructive);
 
 static void rq_step(grpc_exec_ctx *exec_ctx, void *rq, grpc_error *error) {
-  grpc_resource_quota *resource_quota = rq;
+  grpc_resource_quota *resource_quota = (grpc_resource_quota *)rq;
   resource_quota->step_scheduled = false;
   do {
     if (rq_alloc(exec_ctx, resource_quota)) goto done;
@@ -380,12 +381,12 @@ typedef struct {
 } ru_slice_refcount;
 
 static void ru_slice_ref(void *p) {
-  ru_slice_refcount *rc = p;
+  ru_slice_refcount *rc = (ru_slice_refcount *)p;
   gpr_ref(&rc->refs);
 }
 
 static void ru_slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
-  ru_slice_refcount *rc = p;
+  ru_slice_refcount *rc = (ru_slice_refcount *)p;
   if (gpr_unref(&rc->refs)) {
     grpc_resource_user_free(exec_ctx, rc->resource_user, rc->size);
     gpr_free(rc);
@@ -398,7 +399,8 @@ static const grpc_slice_refcount_vtable ru_slice_vtable = {
 
 static grpc_slice ru_slice_create(grpc_resource_user *resource_user,
                                   size_t size) {
-  ru_slice_refcount *rc = gpr_malloc(sizeof(ru_slice_refcount) + size);
+  ru_slice_refcount *rc =
+      (ru_slice_refcount *)gpr_malloc(sizeof(ru_slice_refcount) + size);
   rc->base.vtable = &ru_slice_vtable;
   rc->base.sub_refcount = &rc->base;
   gpr_ref_init(&rc->refs, 1);
@@ -417,7 +419,7 @@ static grpc_slice ru_slice_create(grpc_resource_user *resource_user,
  */
 
 static void ru_allocate(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   if (rulist_empty(resource_user->resource_quota,
                    GRPC_RULIST_AWAITING_ALLOCATION)) {
     rq_step_sched(exec_ctx, resource_user->resource_quota);
@@ -427,7 +429,7 @@ static void ru_allocate(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
 
 static void ru_add_to_free_pool(grpc_exec_ctx *exec_ctx, void *ru,
                                 grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   if (!rulist_empty(resource_user->resource_quota,
                     GRPC_RULIST_AWAITING_ALLOCATION) &&
       rulist_empty(resource_user->resource_quota,
@@ -454,7 +456,7 @@ static bool ru_post_reclaimer(grpc_exec_ctx *exec_ctx,
 
 static void ru_post_benign_reclaimer(grpc_exec_ctx *exec_ctx, void *ru,
                                      grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   if (!ru_post_reclaimer(exec_ctx, resource_user, false)) return;
   if (!rulist_empty(resource_user->resource_quota,
                     GRPC_RULIST_AWAITING_ALLOCATION) &&
@@ -469,7 +471,7 @@ static void ru_post_benign_reclaimer(grpc_exec_ctx *exec_ctx, void *ru,
 
 static void ru_post_destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *ru,
                                           grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   if (!ru_post_reclaimer(exec_ctx, resource_user, true)) return;
   if (!rulist_empty(resource_user->resource_quota,
                     GRPC_RULIST_AWAITING_ALLOCATION) &&
@@ -485,7 +487,7 @@ static void ru_post_destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *ru,
 }
 
 static void ru_shutdown(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   GRPC_CLOSURE_SCHED(exec_ctx, resource_user->reclaimers[0],
                      GRPC_ERROR_CANCELLED);
   GRPC_CLOSURE_SCHED(exec_ctx, resource_user->reclaimers[1],
@@ -497,7 +499,7 @@ static void ru_shutdown(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
 }
 
 static void ru_destroy(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
-  grpc_resource_user *resource_user = ru;
+  grpc_resource_user *resource_user = (grpc_resource_user *)ru;
   GPR_ASSERT(gpr_atm_no_barrier_load(&resource_user->refs) == 0);
   for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
     rulist_remove(resource_user, (grpc_rulist)i);
@@ -518,7 +520,8 @@ static void ru_destroy(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) {
 
 static void ru_allocated_slices(grpc_exec_ctx *exec_ctx, void *arg,
                                 grpc_error *error) {
-  grpc_resource_user_slice_allocator *slice_allocator = arg;
+  grpc_resource_user_slice_allocator *slice_allocator =
+      (grpc_resource_user_slice_allocator *)arg;
   if (error == GRPC_ERROR_NONE) {
     for (size_t i = 0; i < slice_allocator->count; i++) {
       grpc_slice_buffer_add_indexed(
@@ -541,7 +544,7 @@ typedef struct {
 } rq_resize_args;
 
 static void rq_resize(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) {
-  rq_resize_args *a = args;
+  rq_resize_args *a = (rq_resize_args *)args;
   int64_t delta = a->size - a->resource_quota->size;
   a->resource_quota->size += delta;
   a->resource_quota->free_pool += delta;
@@ -553,7 +556,7 @@ static void rq_resize(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) {
 
 static void rq_reclamation_done(grpc_exec_ctx *exec_ctx, void *rq,
                                 grpc_error *error) {
-  grpc_resource_quota *resource_quota = rq;
+  grpc_resource_quota *resource_quota = (grpc_resource_quota *)rq;
   resource_quota->reclaiming = false;
   rq_step_sched(exec_ctx, resource_quota);
   grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
@@ -565,7 +568,8 @@ static void rq_reclamation_done(grpc_exec_ctx *exec_ctx, void *rq,
 
 /* Public API */
 grpc_resource_quota *grpc_resource_quota_create(const char *name) {
-  grpc_resource_quota *resource_quota = gpr_malloc(sizeof(*resource_quota));
+  grpc_resource_quota *resource_quota =
+      (grpc_resource_quota *)gpr_malloc(sizeof(*resource_quota));
   gpr_ref_init(&resource_quota->refs, 1);
   resource_quota->combiner = grpc_combiner_create();
   resource_quota->free_pool = INT64_MAX;
@@ -629,7 +633,7 @@ double grpc_resource_quota_get_memory_pressure(
 void grpc_resource_quota_resize(grpc_resource_quota *resource_quota,
                                 size_t size) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  rq_resize_args *a = gpr_malloc(sizeof(*a));
+  rq_resize_args *a = (rq_resize_args *)gpr_malloc(sizeof(*a));
   a->resource_quota = grpc_resource_quota_ref_internal(resource_quota);
   a->size = (int64_t)size;
   gpr_atm_no_barrier_store(&resource_quota->last_size,
@@ -653,7 +657,7 @@ grpc_resource_quota *grpc_resource_quota_from_channel_args(
     if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
       if (channel_args->args[i].type == GRPC_ARG_POINTER) {
         return grpc_resource_quota_ref_internal(
-            channel_args->args[i].value.pointer.p);
+            (grpc_resource_quota *)channel_args->args[i].value.pointer.p);
       } else {
         gpr_log(GPR_DEBUG, GRPC_ARG_RESOURCE_QUOTA " should be a pointer");
       }
@@ -663,12 +667,12 @@ grpc_resource_quota *grpc_resource_quota_from_channel_args(
 }
 
 static void *rq_copy(void *rq) {
-  grpc_resource_quota_ref(rq);
+  grpc_resource_quota_ref((grpc_resource_quota *)rq);
   return rq;
 }
 
 static void rq_destroy(grpc_exec_ctx *exec_ctx, void *rq) {
-  grpc_resource_quota_unref_internal(exec_ctx, rq);
+  grpc_resource_quota_unref_internal(exec_ctx, (grpc_resource_quota *)rq);
 }
 
 static int rq_cmp(void *a, void *b) { return GPR_ICMP(a, b); }
@@ -684,7 +688,8 @@ const grpc_arg_pointer_vtable *grpc_resource_quota_arg_vtable(void) {
 
 grpc_resource_user *grpc_resource_user_create(
     grpc_resource_quota *resource_quota, const char *name) {
-  grpc_resource_user *resource_user = gpr_malloc(sizeof(*resource_user));
+  grpc_resource_user *resource_user =
+      (grpc_resource_user *)gpr_malloc(sizeof(*resource_user));
   resource_user->resource_quota =
       grpc_resource_quota_ref_internal(resource_quota);
   GRPC_CLOSURE_INIT(&resource_user->allocate_closure, &ru_allocate,
diff --git a/src/core/lib/iomgr/socket_factory_posix.c b/src/core/lib/iomgr/socket_factory_posix.c
index 0f82dea570..8e907703ae 100644
--- a/src/core/lib/iomgr/socket_factory_posix.c
+++ b/src/core/lib/iomgr/socket_factory_posix.c
@@ -69,11 +69,11 @@ void grpc_socket_factory_unref(grpc_socket_factory *factory) {
 }
 
 static void *socket_factory_arg_copy(void *p) {
-  return grpc_socket_factory_ref(p);
+  return grpc_socket_factory_ref((grpc_socket_factory *)p);
 }
 
 static void socket_factory_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
-  grpc_socket_factory_unref(p);
+  grpc_socket_factory_unref((grpc_socket_factory *)p);
 }
 
 static int socket_factory_cmp(void *a, void *b) {
@@ -85,8 +85,8 @@ static const grpc_arg_pointer_vtable socket_factory_arg_vtable = {
     socket_factory_arg_copy, socket_factory_arg_destroy, socket_factory_cmp};
 
 grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory *factory) {
-  return grpc_channel_arg_pointer_create(GRPC_ARG_SOCKET_FACTORY, factory,
-                                         &socket_factory_arg_vtable);
+  return grpc_channel_arg_pointer_create((char *)GRPC_ARG_SOCKET_FACTORY,
+                                         factory, &socket_factory_arg_vtable);
 }
 
 #endif
diff --git a/src/core/lib/iomgr/socket_mutator.c b/src/core/lib/iomgr/socket_mutator.c
index 5d6c2c400e..b0435d5a07 100644
--- a/src/core/lib/iomgr/socket_mutator.c
+++ b/src/core/lib/iomgr/socket_mutator.c
@@ -60,11 +60,11 @@ void grpc_socket_mutator_unref(grpc_socket_mutator *mutator) {
 }
 
 static void *socket_mutator_arg_copy(void *p) {
-  return grpc_socket_mutator_ref(p);
+  return grpc_socket_mutator_ref((grpc_socket_mutator *)p);
 }
 
 static void socket_mutator_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
-  grpc_socket_mutator_unref(p);
+  grpc_socket_mutator_unref((grpc_socket_mutator *)p);
 }
 
 static int socket_mutator_cmp(void *a, void *b) {
@@ -76,6 +76,6 @@ static const grpc_arg_pointer_vtable socket_mutator_arg_vtable = {
     socket_mutator_arg_copy, socket_mutator_arg_destroy, socket_mutator_cmp};
 
 grpc_arg grpc_socket_mutator_to_arg(grpc_socket_mutator *mutator) {
-  return grpc_channel_arg_pointer_create(GRPC_ARG_SOCKET_MUTATOR, mutator,
-                                         &socket_mutator_arg_vtable);
+  return grpc_channel_arg_pointer_create((char *)GRPC_ARG_SOCKET_MUTATOR,
+                                         mutator, &socket_mutator_arg_vtable);
 }
diff --git a/src/core/lib/iomgr/tcp_client_posix.c b/src/core/lib/iomgr/tcp_client_posix.c
index a25fba4527..39dbb506e2 100644
--- a/src/core/lib/iomgr/tcp_client_posix.c
+++ b/src/core/lib/iomgr/tcp_client_posix.c
@@ -80,7 +80,8 @@ static grpc_error *prepare_socket(const grpc_resolved_address *addr, int fd,
     for (size_t i = 0; i < channel_args->num_args; i++) {
       if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_SOCKET_MUTATOR)) {
         GPR_ASSERT(channel_args->args[i].type == GRPC_ARG_POINTER);
-        grpc_socket_mutator *mutator = channel_args->args[i].value.pointer.p;
+        grpc_socket_mutator *mutator =
+            (grpc_socket_mutator *)channel_args->args[i].value.pointer.p;
         err = grpc_set_socket_with_mutator(fd, mutator);
         if (err != GRPC_ERROR_NONE) goto error;
       }
@@ -98,7 +99,7 @@ done:
 
 static void tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
   int done;
-  async_connect *ac = acp;
+  async_connect *ac = (async_connect *)acp;
   if (GRPC_TRACER_ON(grpc_tcp_trace)) {
     const char *str = grpc_error_string(error);
     gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_alarm: error=%s", ac->addr_str,
@@ -126,7 +127,7 @@ grpc_endpoint *grpc_tcp_client_create_from_fd(
 }
 
 static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
-  async_connect *ac = acp;
+  async_connect *ac = (async_connect *)acp;
   int so_error = 0;
   socklen_t so_error_size;
   int err;
@@ -304,7 +305,7 @@ static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
 
   grpc_pollset_set_add_fd(exec_ctx, interested_parties, fdobj);
 
-  ac = gpr_malloc(sizeof(async_connect));
+  ac = (async_connect *)gpr_malloc(sizeof(async_connect));
   ac->closure = closure;
   ac->ep = ep;
   ac->fd = fdobj;
diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c
index 2f543fd8a9..7e271294fd 100644
--- a/src/core/lib/iomgr/tcp_posix.c
+++ b/src/core/lib/iomgr/tcp_posix.c
@@ -40,8 +40,10 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
@@ -66,7 +68,6 @@ typedef struct {
   grpc_fd *em_fd;
   int fd;
   bool finished_edge;
-  msg_iovlen_type iov_size; /* Number of slices to allocate per read attempt */
   double target_length;
   double bytes_read_this_round;
   gpr_refcount refcount;
@@ -90,8 +91,8 @@ typedef struct {
   grpc_closure *release_fd_cb;
   int *release_fd;
 
-  grpc_closure read_closure;
-  grpc_closure write_closure;
+  grpc_closure read_done_closure;
+  grpc_closure write_done_closure;
 
   char *peer_string;
 
@@ -99,6 +100,148 @@ typedef struct {
   grpc_resource_user_slice_allocator slice_allocator;
 } grpc_tcp;
 
+typedef struct backup_poller {
+  gpr_mu *pollset_mu;
+  grpc_closure run_poller;
+} backup_poller;
+
+#define BACKUP_POLLER_POLLSET(b) ((grpc_pollset *)((b) + 1))
+
+static gpr_atm g_uncovered_notifications_pending;
+static gpr_atm g_backup_poller; /* backup_poller* */
+
+static void tcp_handle_read(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
+                            grpc_error *error);
+static void tcp_handle_write(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
+                             grpc_error *error);
+static void tcp_drop_uncovered_then_handle_write(grpc_exec_ctx *exec_ctx,
+                                                 void *arg /* grpc_tcp */,
+                                                 grpc_error *error);
+
+static void done_poller(grpc_exec_ctx *exec_ctx, void *bp,
+                        grpc_error *error_ignored) {
+  backup_poller *p = (backup_poller *)bp;
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p destroy", p);
+  }
+  grpc_pollset_destroy(exec_ctx, BACKUP_POLLER_POLLSET(p));
+  gpr_free(p);
+}
+
+static void run_poller(grpc_exec_ctx *exec_ctx, void *bp,
+                       grpc_error *error_ignored) {
+  backup_poller *p = (backup_poller *)bp;
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p run", p);
+  }
+  gpr_mu_lock(p->pollset_mu);
+  gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+  gpr_timespec deadline =
+      gpr_time_add(now, gpr_time_from_seconds(10, GPR_TIMESPAN));
+  GRPC_STATS_INC_TCP_BACKUP_POLLER_POLLS(exec_ctx);
+  GRPC_LOG_IF_ERROR("backup_poller:pollset_work",
+                    grpc_pollset_work(exec_ctx, BACKUP_POLLER_POLLSET(p), NULL,
+                                      now, deadline));
+  gpr_mu_unlock(p->pollset_mu);
+  /* last "uncovered" notification is the ref that keeps us polling, if we get
+   * there try a cas to release it */
+  if (gpr_atm_no_barrier_load(&g_uncovered_notifications_pending) == 1 &&
+      gpr_atm_full_cas(&g_uncovered_notifications_pending, 1, 0)) {
+    gpr_mu_lock(p->pollset_mu);
+    bool cas_ok = gpr_atm_full_cas(&g_backup_poller, (gpr_atm)p, 0);
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p done cas_ok=%d", p, cas_ok);
+    }
+    gpr_mu_unlock(p->pollset_mu);
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p shutdown", p);
+    }
+    grpc_pollset_shutdown(exec_ctx, BACKUP_POLLER_POLLSET(p),
+                          GRPC_CLOSURE_INIT(&p->run_poller, done_poller, p,
+                                            grpc_schedule_on_exec_ctx));
+  } else {
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p reschedule", p);
+    }
+    GRPC_CLOSURE_SCHED(exec_ctx, &p->run_poller, GRPC_ERROR_NONE);
+  }
+}
+
+static void drop_uncovered(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
+  backup_poller *p = (backup_poller *)gpr_atm_acq_load(&g_backup_poller);
+  gpr_atm old_count =
+      gpr_atm_no_barrier_fetch_add(&g_uncovered_notifications_pending, -1);
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p uncover cnt %d->%d", p, (int)old_count,
+            (int)old_count - 1);
+  }
+  GPR_ASSERT(old_count != 1);
+}
+
+static void cover_self(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
+  backup_poller *p;
+  gpr_atm old_count =
+      gpr_atm_no_barrier_fetch_add(&g_uncovered_notifications_pending, 2);
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "BACKUP_POLLER: cover cnt %d->%d", (int)old_count,
+            2 + (int)old_count);
+  }
+  if (old_count == 0) {
+    GRPC_STATS_INC_TCP_BACKUP_POLLERS_CREATED(exec_ctx);
+    p = (backup_poller *)gpr_malloc(sizeof(*p) + grpc_pollset_size());
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p create", p);
+    }
+    grpc_pollset_init(BACKUP_POLLER_POLLSET(p), &p->pollset_mu);
+    gpr_atm_rel_store(&g_backup_poller, (gpr_atm)p);
+    GRPC_CLOSURE_SCHED(
+        exec_ctx,
+        GRPC_CLOSURE_INIT(&p->run_poller, run_poller, p,
+                          grpc_executor_scheduler(GRPC_EXECUTOR_LONG)),
+        GRPC_ERROR_NONE);
+  } else {
+    while ((p = (backup_poller *)gpr_atm_acq_load(&g_backup_poller)) == NULL) {
+      // spin waiting for backup poller
+    }
+  }
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "BACKUP_POLLER:%p add %p", p, tcp);
+  }
+  grpc_pollset_add_fd(exec_ctx, BACKUP_POLLER_POLLSET(p), tcp->em_fd);
+  if (old_count != 0) {
+    drop_uncovered(exec_ctx, tcp);
+  }
+}
+
+static void notify_on_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p notify_on_read", tcp);
+  }
+  GRPC_CLOSURE_INIT(&tcp->read_done_closure, tcp_handle_read, tcp,
+                    grpc_schedule_on_exec_ctx);
+  grpc_fd_notify_on_read(exec_ctx, tcp->em_fd, &tcp->read_done_closure);
+}
+
+static void notify_on_write(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p notify_on_write", tcp);
+  }
+  cover_self(exec_ctx, tcp);
+  GRPC_CLOSURE_INIT(&tcp->write_done_closure,
+                    tcp_drop_uncovered_then_handle_write, tcp,
+                    grpc_schedule_on_exec_ctx);
+  grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_done_closure);
+}
+
+static void tcp_drop_uncovered_then_handle_write(grpc_exec_ctx *exec_ctx,
+                                                 void *arg, grpc_error *error) {
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p got_write: %s", arg, grpc_error_string(error));
+  }
+  drop_uncovered(exec_ctx, (grpc_tcp *)arg);
+  tcp_handle_write(exec_ctx, arg, error);
+}
+
 static void add_to_estimate(grpc_tcp *tcp, size_t bytes) {
   tcp->bytes_read_this_round += (double)bytes;
 }
@@ -214,6 +357,7 @@ static void call_read_cb(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp,
   grpc_closure *cb = tcp->read_cb;
 
   if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p call_cb %p %p:%p", tcp, cb, cb->cb, cb->cb_arg);
     size_t i;
     const char *str = grpc_error_string(error);
     gpr_log(GPR_DEBUG, "read: error=%s", str);
@@ -239,7 +383,6 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
   size_t i;
 
   GPR_ASSERT(!tcp->finished_edge);
-  GPR_ASSERT(tcp->iov_size <= MAX_READ_IOVEC);
   GPR_ASSERT(tcp->incoming_buffer->count <= MAX_READ_IOVEC);
   GPR_TIMER_BEGIN("tcp_continue_read", 0);
 
@@ -251,13 +394,17 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
   msg.msg_name = NULL;
   msg.msg_namelen = 0;
   msg.msg_iov = iov;
-  msg.msg_iovlen = tcp->iov_size;
+  msg.msg_iovlen = (msg_iovlen_type)tcp->incoming_buffer->count;
   msg.msg_control = NULL;
   msg.msg_controllen = 0;
   msg.msg_flags = 0;
 
+  GRPC_STATS_INC_TCP_READ_OFFER(exec_ctx, tcp->incoming_buffer->length);
+  GRPC_STATS_INC_TCP_READ_OFFER_IOV_SIZE(exec_ctx, tcp->incoming_buffer->count);
+
   GPR_TIMER_BEGIN("recvmsg", 0);
   do {
+    GRPC_STATS_INC_SYSCALL_READ(exec_ctx);
     read_bytes = recvmsg(tcp->fd, &msg, 0);
   } while (read_bytes < 0 && errno == EINTR);
   GPR_TIMER_END("recvmsg", read_bytes >= 0);
@@ -268,7 +415,7 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
     if (errno == EAGAIN) {
       finish_estimate(tcp);
       /* We've consumed the edge, request a new one */
-      grpc_fd_notify_on_read(exec_ctx, tcp->em_fd, &tcp->read_closure);
+      notify_on_read(exec_ctx, tcp);
     } else {
       grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
                                                  tcp->incoming_buffer);
@@ -285,6 +432,7 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
             GRPC_ERROR_CREATE_FROM_STATIC_STRING("Socket closed"), tcp));
     TCP_UNREF(exec_ctx, tcp, "read");
   } else {
+    GRPC_STATS_INC_TCP_READ_SIZE(exec_ctx, read_bytes);
     add_to_estimate(tcp, (size_t)read_bytes);
     GPR_ASSERT((size_t)read_bytes <= tcp->incoming_buffer->length);
     if ((size_t)read_bytes < tcp->incoming_buffer->length) {
@@ -303,7 +451,11 @@ static void tcp_do_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
 
 static void tcp_read_allocation_done(grpc_exec_ctx *exec_ctx, void *tcpp,
                                      grpc_error *error) {
-  grpc_tcp *tcp = tcpp;
+  grpc_tcp *tcp = (grpc_tcp *)tcpp;
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p read_allocation_done: %s", tcp,
+            grpc_error_string(error));
+  }
   if (error != GRPC_ERROR_NONE) {
     grpc_slice_buffer_reset_and_unref_internal(exec_ctx, tcp->incoming_buffer);
     grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
@@ -319,9 +471,15 @@ static void tcp_continue_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) {
   size_t target_read_size = get_target_read_size(tcp);
   if (tcp->incoming_buffer->length < target_read_size &&
       tcp->incoming_buffer->count < MAX_READ_IOVEC) {
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "TCP:%p alloc_slices", tcp);
+    }
     grpc_resource_user_alloc_slices(exec_ctx, &tcp->slice_allocator,
                                     target_read_size, 1, tcp->incoming_buffer);
   } else {
+    if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+      gpr_log(GPR_DEBUG, "TCP:%p do_read", tcp);
+    }
     tcp_do_read(exec_ctx, tcp);
   }
 }
@@ -330,6 +488,9 @@ static void tcp_handle_read(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
                             grpc_error *error) {
   grpc_tcp *tcp = (grpc_tcp *)arg;
   GPR_ASSERT(!tcp->finished_edge);
+  if (GRPC_TRACER_ON(grpc_tcp_trace)) {
+    gpr_log(GPR_DEBUG, "TCP:%p got_read: %s", tcp, grpc_error_string(error));
+  }
 
   if (error != GRPC_ERROR_NONE) {
     grpc_slice_buffer_reset_and_unref_internal(exec_ctx, tcp->incoming_buffer);
@@ -353,15 +514,16 @@ static void tcp_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   TCP_REF(tcp, "read");
   if (tcp->finished_edge) {
     tcp->finished_edge = false;
-    grpc_fd_notify_on_read(exec_ctx, tcp->em_fd, &tcp->read_closure);
+    notify_on_read(exec_ctx, tcp);
   } else {
-    GRPC_CLOSURE_SCHED(exec_ctx, &tcp->read_closure, GRPC_ERROR_NONE);
+    GRPC_CLOSURE_SCHED(exec_ctx, &tcp->read_done_closure, GRPC_ERROR_NONE);
   }
 }
 
 /* returns true if done, false if pending; if returning true, *error is set */
 #define MAX_WRITE_IOVEC 1000
-static bool tcp_flush(grpc_tcp *tcp, grpc_error **error) {
+static bool tcp_flush(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp,
+                      grpc_error **error) {
   struct msghdr msg;
   struct iovec iov[MAX_WRITE_IOVEC];
   msg_iovlen_type iov_size;
@@ -400,9 +562,13 @@ static bool tcp_flush(grpc_tcp *tcp, grpc_error **error) {
     msg.msg_controllen = 0;
     msg.msg_flags = 0;
 
+    GRPC_STATS_INC_TCP_WRITE_SIZE(exec_ctx, sending_length);
+    GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(exec_ctx, iov_size);
+
     GPR_TIMER_BEGIN("sendmsg", 1);
     do {
       /* TODO(klempner): Cork if this is a partial write */
+      GRPC_STATS_INC_SYSCALL_WRITE(exec_ctx);
       sent_length = sendmsg(tcp->fd, &msg, SENDMSG_FLAGS);
     } while (sent_length < 0 && errno == EINTR);
     GPR_TIMER_END("sendmsg", 0);
@@ -459,11 +625,11 @@ static void tcp_handle_write(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */,
     return;
   }
 
-  if (!tcp_flush(tcp, &error)) {
+  if (!tcp_flush(exec_ctx, tcp, &error)) {
     if (GRPC_TRACER_ON(grpc_tcp_trace)) {
       gpr_log(GPR_DEBUG, "write: delayed");
     }
-    grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure);
+    notify_on_write(exec_ctx, tcp);
   } else {
     cb = tcp->write_cb;
     tcp->write_cb = NULL;
@@ -510,13 +676,13 @@ static void tcp_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
   tcp->outgoing_slice_idx = 0;
   tcp->outgoing_byte_idx = 0;
 
-  if (!tcp_flush(tcp, &error)) {
+  if (!tcp_flush(exec_ctx, tcp, &error)) {
     TCP_REF(tcp, "write");
     tcp->write_cb = cb;
     if (GRPC_TRACER_ON(grpc_tcp_trace)) {
       gpr_log(GPR_DEBUG, "write: delayed");
     }
-    grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure);
+    notify_on_write(exec_ctx, tcp);
   } else {
     if (GRPC_TRACER_ON(grpc_tcp_trace)) {
       const char *str = grpc_error_string(error);
@@ -593,7 +759,7 @@ grpc_endpoint *grpc_tcp_create(grpc_exec_ctx *exec_ctx, grpc_fd *em_fd,
                  strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
         grpc_resource_quota_unref_internal(exec_ctx, resource_quota);
         resource_quota = grpc_resource_quota_ref_internal(
-            channel_args->args[i].value.pointer.p);
+            (grpc_resource_quota *)channel_args->args[i].value.pointer.p);
       }
     }
   }
@@ -617,16 +783,11 @@ grpc_endpoint *grpc_tcp_create(grpc_exec_ctx *exec_ctx, grpc_fd *em_fd,
   tcp->min_read_chunk_size = tcp_min_read_chunk_size;
   tcp->max_read_chunk_size = tcp_max_read_chunk_size;
   tcp->bytes_read_this_round = 0;
-  tcp->iov_size = 1;
   tcp->finished_edge = true;
   /* paired with unref in grpc_tcp_destroy */
   gpr_ref_init(&tcp->refcount, 1);
   gpr_atm_no_barrier_store(&tcp->shutdown_count, 0);
   tcp->em_fd = em_fd;
-  GRPC_CLOSURE_INIT(&tcp->read_closure, tcp_handle_read, tcp,
-                    grpc_schedule_on_exec_ctx);
-  GRPC_CLOSURE_INIT(&tcp->write_closure, tcp_handle_write, tcp,
-                    grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&tcp->last_read_buffer);
   tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string);
   grpc_resource_user_slice_allocator_init(
diff --git a/src/core/lib/iomgr/tcp_server_posix.c b/src/core/lib/iomgr/tcp_server_posix.c
index 0fc5c0fd86..06612d639c 100644
--- a/src/core/lib/iomgr/tcp_server_posix.c
+++ b/src/core/lib/iomgr/tcp_server_posix.c
@@ -74,7 +74,7 @@ grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx,
                                    grpc_tcp_server **server) {
   gpr_once_init(&check_init, init);
 
-  grpc_tcp_server *s = gpr_zalloc(sizeof(grpc_tcp_server));
+  grpc_tcp_server *s = (grpc_tcp_server *)gpr_zalloc(sizeof(grpc_tcp_server));
   s->so_reuseport = has_so_reuseport;
   s->expand_wildcard_addrs = false;
   for (size_t i = 0; i < (args == NULL ? 0 : args->num_args); i++) {
@@ -138,7 +138,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
 
 static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server,
                            grpc_error *error) {
-  grpc_tcp_server *s = server;
+  grpc_tcp_server *s = (grpc_tcp_server *)server;
   gpr_mu_lock(&s->mu);
   s->destroyed_ports++;
   if (s->destroyed_ports == s->nports) {
@@ -197,13 +197,13 @@ static void tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
 
 /* event manager callback when reads are ready */
 static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *err) {
-  grpc_tcp_listener *sp = arg;
-
+  grpc_tcp_listener *sp = (grpc_tcp_listener *)arg;
+  grpc_pollset *read_notifier_pollset;
   if (err != GRPC_ERROR_NONE) {
     goto error;
   }
 
-  grpc_pollset *read_notifier_pollset =
+  read_notifier_pollset =
       sp->server->pollsets[(size_t)gpr_atm_no_barrier_fetch_add(
                                &sp->server->next_pollset_to_assign, 1) %
                            sp->server->pollset_count];
@@ -251,7 +251,8 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *err) {
     grpc_pollset_add_fd(exec_ctx, read_notifier_pollset, fdobj);
 
     // Create acceptor.
-    grpc_tcp_server_acceptor *acceptor = gpr_malloc(sizeof(*acceptor));
+    grpc_tcp_server_acceptor *acceptor =
+        (grpc_tcp_server_acceptor *)gpr_malloc(sizeof(*acceptor));
     acceptor->from_server = sp->server;
     acceptor->port_index = sp->port_index;
     acceptor->fd_index = sp->fd_index;
@@ -365,7 +366,7 @@ static grpc_error *clone_port(grpc_tcp_listener *listener, unsigned count) {
     listener->server->nports++;
     grpc_sockaddr_to_string(&addr_str, &listener->addr, 1);
     gpr_asprintf(&name, "tcp-server-listener:%s/clone-%d", addr_str, i);
-    sp = gpr_malloc(sizeof(grpc_tcp_listener));
+    sp = (grpc_tcp_listener *)gpr_malloc(sizeof(grpc_tcp_listener));
     sp->next = listener->next;
     listener->next = sp;
     /* sp (the new listener) is a sibling of 'listener' (the original
diff --git a/src/core/lib/iomgr/tcp_server_utils_posix_common.c b/src/core/lib/iomgr/tcp_server_utils_posix_common.c
index ad535bc43e..a828bee074 100644
--- a/src/core/lib/iomgr/tcp_server_utils_posix_common.c
+++ b/src/core/lib/iomgr/tcp_server_utils_posix_common.c
@@ -93,7 +93,7 @@ static grpc_error *add_socket_to_server(grpc_tcp_server *s, int fd,
     gpr_mu_lock(&s->mu);
     s->nports++;
     GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
-    sp = gpr_malloc(sizeof(grpc_tcp_listener));
+    sp = (grpc_tcp_listener *)gpr_malloc(sizeof(grpc_tcp_listener));
     sp->next = NULL;
     if (s->head == NULL) {
       s->head = sp;
diff --git a/src/core/lib/iomgr/timer.h b/src/core/lib/iomgr/timer.h
index b92b8fb8b8..ac392f87fe 100644
--- a/src/core/lib/iomgr/timer.h
+++ b/src/core/lib/iomgr/timer.h
@@ -44,6 +44,10 @@ void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
                      gpr_timespec deadline, grpc_closure *closure,
                      gpr_timespec now);
 
+/* Initialize *timer without setting it. This can later be passed through
+   the regular init or cancel */
+void grpc_timer_init_unset(grpc_timer *timer);
+
 /* Note that there is no timer destroy function. This is because the
    timer is a one-time occurrence with a guarantee that the callback will
    be called exactly once, either at expiration or cancellation. Thus, all
diff --git a/src/core/lib/iomgr/timer_generic.c b/src/core/lib/iomgr/timer_generic.c
index 12efce241f..e9a7236c8c 100644
--- a/src/core/lib/iomgr/timer_generic.c
+++ b/src/core/lib/iomgr/timer_generic.c
@@ -95,9 +95,7 @@ struct shared_mutables {
   gpr_mu mu;
 } GPR_ALIGN_STRUCT(GPR_CACHELINE_SIZE);
 
-static struct shared_mutables g_shared_mutables = {
-    .checker_mu = GPR_SPINLOCK_STATIC_INITIALIZER, .initialized = false,
-};
+static struct shared_mutables g_shared_mutables;
 
 static gpr_clock_type g_clock_type;
 static gpr_timespec g_start_time;
@@ -155,6 +153,7 @@ void grpc_timer_list_init(gpr_timespec now) {
   uint32_t i;
 
   g_shared_mutables.initialized = true;
+  g_shared_mutables.checker_mu = GPR_SPINLOCK_INITIALIZER;
   gpr_mu_init(&g_shared_mutables.mu);
   g_clock_type = now.clock_type;
   g_start_time = now;
@@ -234,6 +233,8 @@ static void note_deadline_change(timer_shard *shard) {
   }
 }
 
+void grpc_timer_init_unset(grpc_timer *timer) { timer->pending = false; }
+
 void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
                      gpr_timespec deadline, grpc_closure *closure,
                      gpr_timespec now) {
diff --git a/src/core/lib/iomgr/timer_heap.c b/src/core/lib/iomgr/timer_heap.c
index a70e3942b2..2648d5da5d 100644
--- a/src/core/lib/iomgr/timer_heap.c
+++ b/src/core/lib/iomgr/timer_heap.c
@@ -74,8 +74,8 @@ static void maybe_shrink(grpc_timer_heap *heap) {
   if (heap->timer_count >= 8 &&
       heap->timer_count <= heap->timer_capacity / SHRINK_FULLNESS_FACTOR / 2) {
     heap->timer_capacity = heap->timer_count * SHRINK_FULLNESS_FACTOR;
-    heap->timers =
-        gpr_realloc(heap->timers, heap->timer_capacity * sizeof(grpc_timer *));
+    heap->timers = (grpc_timer **)gpr_realloc(
+        heap->timers, heap->timer_capacity * sizeof(grpc_timer *));
   }
 }
 
@@ -99,8 +99,8 @@ int grpc_timer_heap_add(grpc_timer_heap *heap, grpc_timer *timer) {
   if (heap->timer_count == heap->timer_capacity) {
     heap->timer_capacity =
         GPR_MAX(heap->timer_capacity + 1, heap->timer_capacity * 3 / 2);
-    heap->timers =
-        gpr_realloc(heap->timers, heap->timer_capacity * sizeof(grpc_timer *));
+    heap->timers = (grpc_timer **)gpr_realloc(
+        heap->timers, heap->timer_capacity * sizeof(grpc_timer *));
   }
   timer->heap_index = heap->timer_count;
   adjust_upwards(heap->timers, heap->timer_count, timer);
diff --git a/src/core/lib/iomgr/timer_manager.c b/src/core/lib/iomgr/timer_manager.c
index 631f7935d9..04ca44563d 100644
--- a/src/core/lib/iomgr/timer_manager.c
+++ b/src/core/lib/iomgr/timer_manager.c
@@ -83,7 +83,7 @@ static void start_timer_thread_and_unlock(void) {
   }
   gpr_thd_options opt = gpr_thd_options_default();
   gpr_thd_options_set_joinable(&opt);
-  completed_thread *ct = gpr_malloc(sizeof(*ct));
+  completed_thread *ct = (completed_thread *)gpr_malloc(sizeof(*ct));
   // The call to gpr_thd_new() has to be under the same lock used by
   // gc_completed_threads(), particularly due to ct->t, which is written here
   // (internally by gpr_thd_new) and read there. Otherwise it's possible for ct
@@ -276,7 +276,7 @@ static void timer_thread(void *completed_thread_ptr) {
       GRPC_EXEC_CTX_INITIALIZER(0, grpc_never_ready_to_finish, NULL);
   timer_main_loop(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
-  timer_thread_cleanup(completed_thread_ptr);
+  timer_thread_cleanup((completed_thread *)completed_thread_ptr);
 }
 
 static void start_threads(void) {
diff --git a/src/core/lib/iomgr/timer_uv.c b/src/core/lib/iomgr/timer_uv.c
index 70f49bcbe8..adced41f53 100644
--- a/src/core/lib/iomgr/timer_uv.c
+++ b/src/core/lib/iomgr/timer_uv.c
@@ -77,6 +77,8 @@ void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
   uv_unref((uv_handle_t *)uv_timer);
 }
 
+void grpc_timer_init_unset(grpc_timer *timer) { timer->pending = 0; }
+
 void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
   GRPC_UV_ASSERT_SAME_THREAD();
   if (timer->pending) {
diff --git a/src/core/lib/iomgr/udp_server.c b/src/core/lib/iomgr/udp_server.c
index 88fa34cb7a..00b2e68bb5 100644
--- a/src/core/lib/iomgr/udp_server.c
+++ b/src/core/lib/iomgr/udp_server.c
@@ -118,14 +118,14 @@ static grpc_socket_factory *get_socket_factory(const grpc_channel_args *args) {
     const grpc_arg *arg = grpc_channel_args_find(args, GRPC_ARG_SOCKET_FACTORY);
     if (arg) {
       GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
-      return arg->value.pointer.p;
+      return (grpc_socket_factory *)arg->value.pointer.p;
     }
   }
   return NULL;
 }
 
 grpc_udp_server *grpc_udp_server_create(const grpc_channel_args *args) {
-  grpc_udp_server *s = gpr_malloc(sizeof(grpc_udp_server));
+  grpc_udp_server *s = (grpc_udp_server *)gpr_malloc(sizeof(grpc_udp_server));
   gpr_mu_init(&s->mu);
   s->socket_factory = get_socket_factory(args);
   if (s->socket_factory) {
@@ -176,7 +176,7 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
 
 static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server,
                            grpc_error *error) {
-  grpc_udp_server *s = server;
+  grpc_udp_server *s = (grpc_udp_server *)server;
   gpr_mu_lock(&s->mu);
   s->destroyed_ports++;
   if (s->destroyed_ports == s->nports) {
@@ -237,7 +237,8 @@ void grpc_udp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_udp_server *s,
   if (s->active_ports) {
     for (sp = s->head; sp; sp = sp->next) {
       GPR_ASSERT(sp->orphan_cb);
-      struct shutdown_fd_args *args = gpr_malloc(sizeof(*args));
+      struct shutdown_fd_args *args =
+          (struct shutdown_fd_args *)gpr_malloc(sizeof(*args));
       args->fd = sp->emfd;
       args->server_mu = &s->mu;
       GRPC_CLOSURE_INIT(&sp->orphan_fd_closure, shutdown_fd, args,
@@ -331,7 +332,7 @@ error:
 
 /* event manager callback when reads are ready */
 static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_udp_listener *sp = arg;
+  grpc_udp_listener *sp = (grpc_udp_listener *)arg;
 
   gpr_mu_lock(&sp->server->mu);
   if (error != GRPC_ERROR_NONE) {
@@ -354,7 +355,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
 }
 
 static void on_write(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_udp_listener *sp = arg;
+  grpc_udp_listener *sp = (grpc_udp_listener *)arg;
 
   gpr_mu_lock(&(sp->server->mu));
   if (error != GRPC_ERROR_NONE) {
@@ -393,7 +394,7 @@ static int add_socket_to_server(grpc_udp_server *s, int fd,
     gpr_free(addr_str);
     gpr_mu_lock(&s->mu);
     s->nports++;
-    sp = gpr_malloc(sizeof(grpc_udp_listener));
+    sp = (grpc_udp_listener *)gpr_malloc(sizeof(grpc_udp_listener));
     sp->next = NULL;
     if (s->head == NULL) {
       s->head = sp;
@@ -444,7 +445,8 @@ int grpc_udp_server_add_port(grpc_udp_server *s,
                            (socklen_t *)&sockname_temp.len)) {
         port = grpc_sockaddr_get_port(&sockname_temp);
         if (port > 0) {
-          allocated_addr = gpr_malloc(sizeof(grpc_resolved_address));
+          allocated_addr = (grpc_resolved_address *)gpr_malloc(
+              sizeof(grpc_resolved_address));
           memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
           grpc_sockaddr_set_port(allocated_addr, port);
           addr = allocated_addr;
diff --git a/src/core/lib/iomgr/unix_sockets_posix.c b/src/core/lib/iomgr/unix_sockets_posix.c
index 0c8627c8c6..35f898f13a 100644
--- a/src/core/lib/iomgr/unix_sockets_posix.c
+++ b/src/core/lib/iomgr/unix_sockets_posix.c
@@ -49,9 +49,11 @@ grpc_error *grpc_resolve_unix_domain_address(const char *name,
     gpr_free(err_msg);
     return err;
   }
-  *addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
+  *addrs =
+      (grpc_resolved_addresses *)gpr_malloc(sizeof(grpc_resolved_addresses));
   (*addrs)->naddrs = 1;
-  (*addrs)->addrs = gpr_malloc(sizeof(grpc_resolved_address));
+  (*addrs)->addrs =
+      (grpc_resolved_address *)gpr_malloc(sizeof(grpc_resolved_address));
   un = (struct sockaddr_un *)(*addrs)->addrs->addr;
   un->sun_family = AF_UNIX;
   strcpy(un->sun_path, name);
diff --git a/src/core/lib/iomgr/wakeup_fd_cv.c b/src/core/lib/iomgr/wakeup_fd_cv.c
index 075a0b6426..268e0175dd 100644
--- a/src/core/lib/iomgr/wakeup_fd_cv.c
+++ b/src/core/lib/iomgr/wakeup_fd_cv.c
@@ -42,7 +42,8 @@ static grpc_error* cv_fd_init(grpc_wakeup_fd* fd_info) {
   gpr_mu_lock(&g_cvfds.mu);
   if (!g_cvfds.free_fds) {
     newsize = GPR_MIN(g_cvfds.size * 2, g_cvfds.size + MAX_TABLE_RESIZE);
-    g_cvfds.cvfds = gpr_realloc(g_cvfds.cvfds, sizeof(fd_node) * newsize);
+    g_cvfds.cvfds =
+        (fd_node*)gpr_realloc(g_cvfds.cvfds, sizeof(fd_node) * newsize);
     for (i = g_cvfds.size; i < newsize; i++) {
       g_cvfds.cvfds[i].is_set = 0;
       g_cvfds.cvfds[i].cvs = NULL;
@@ -56,7 +57,7 @@ static grpc_error* cv_fd_init(grpc_wakeup_fd* fd_info) {
   g_cvfds.free_fds = g_cvfds.free_fds->next_free;
   g_cvfds.cvfds[idx].cvs = NULL;
   g_cvfds.cvfds[idx].is_set = 0;
-  fd_info->read_fd = IDX_TO_FD(idx);
+  fd_info->read_fd = GRPC_IDX_TO_FD(idx);
   fd_info->write_fd = -1;
   gpr_mu_unlock(&g_cvfds.mu);
   return GRPC_ERROR_NONE;
@@ -65,8 +66,8 @@ static grpc_error* cv_fd_init(grpc_wakeup_fd* fd_info) {
 static grpc_error* cv_fd_wakeup(grpc_wakeup_fd* fd_info) {
   cv_node* cvn;
   gpr_mu_lock(&g_cvfds.mu);
-  g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].is_set = 1;
-  cvn = g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].cvs;
+  g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)].is_set = 1;
+  cvn = g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)].cvs;
   while (cvn) {
     gpr_cv_signal(cvn->cv);
     cvn = cvn->next;
@@ -77,7 +78,7 @@ static grpc_error* cv_fd_wakeup(grpc_wakeup_fd* fd_info) {
 
 static grpc_error* cv_fd_consume(grpc_wakeup_fd* fd_info) {
   gpr_mu_lock(&g_cvfds.mu);
-  g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].is_set = 0;
+  g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)].is_set = 0;
   gpr_mu_unlock(&g_cvfds.mu);
   return GRPC_ERROR_NONE;
 }
@@ -88,9 +89,9 @@ static void cv_fd_destroy(grpc_wakeup_fd* fd_info) {
   }
   gpr_mu_lock(&g_cvfds.mu);
   // Assert that there are no active pollers
-  GPR_ASSERT(!g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].cvs);
-  g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].next_free = g_cvfds.free_fds;
-  g_cvfds.free_fds = &g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)];
+  GPR_ASSERT(!g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)].cvs);
+  g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)].next_free = g_cvfds.free_fds;
+  g_cvfds.free_fds = &g_cvfds.cvfds[GRPC_FD_TO_IDX(fd_info->read_fd)];
   gpr_mu_unlock(&g_cvfds.mu);
 }
 
diff --git a/src/core/lib/iomgr/wakeup_fd_cv.h b/src/core/lib/iomgr/wakeup_fd_cv.h
index 46e84f5843..dc170ad5b4 100644
--- a/src/core/lib/iomgr/wakeup_fd_cv.h
+++ b/src/core/lib/iomgr/wakeup_fd_cv.h
@@ -37,8 +37,8 @@
 
 #include "src/core/lib/iomgr/ev_posix.h"
 
-#define FD_TO_IDX(fd) (-(fd)-1)
-#define IDX_TO_FD(idx) (-(idx)-1)
+#define GRPC_FD_TO_IDX(fd) (-(fd)-1)
+#define GRPC_IDX_TO_FD(idx) (-(idx)-1)
 
 typedef struct cv_node {
   gpr_cv* cv;
diff --git a/src/core/lib/json/json.c b/src/core/lib/json/json.c
index 25eee05532..4ad51f662a 100644
--- a/src/core/lib/json/json.c
+++ b/src/core/lib/json/json.c
@@ -23,7 +23,7 @@
 #include "src/core/lib/json/json.h"
 
 grpc_json* grpc_json_create(grpc_json_type type) {
-  grpc_json* json = gpr_zalloc(sizeof(*json));
+  grpc_json* json = (grpc_json*)gpr_zalloc(sizeof(*json));
   json->type = type;
 
   return json;
diff --git a/src/core/lib/json/json_string.c b/src/core/lib/json/json_string.c
index 65b5f0f482..3178d2d2b4 100644
--- a/src/core/lib/json/json_string.c
+++ b/src/core/lib/json/json_string.c
@@ -63,19 +63,19 @@ typedef struct {
  * bytes at a time (or multiples thereof).
  */
 static void json_writer_output_check(void *userdata, size_t needed) {
-  json_writer_userdata *state = userdata;
+  json_writer_userdata *state = (json_writer_userdata *)userdata;
   if (state->free_space >= needed) return;
   needed -= state->free_space;
   /* Round up by 256 bytes. */
   needed = (needed + 0xff) & ~0xffU;
-  state->output = gpr_realloc(state->output, state->allocated + needed);
+  state->output = (char *)gpr_realloc(state->output, state->allocated + needed);
   state->free_space += needed;
   state->allocated += needed;
 }
 
 /* These are needed by the writer's implementation. */
 static void json_writer_output_char(void *userdata, char c) {
-  json_writer_userdata *state = userdata;
+  json_writer_userdata *state = (json_writer_userdata *)userdata;
   json_writer_output_check(userdata, 1);
   state->output[state->string_len++] = c;
   state->free_space--;
@@ -83,7 +83,7 @@ static void json_writer_output_char(void *userdata, char c) {
 
 static void json_writer_output_string_with_len(void *userdata, const char *str,
                                                size_t len) {
-  json_writer_userdata *state = userdata;
+  json_writer_userdata *state = (json_writer_userdata *)userdata;
   json_writer_output_check(userdata, len);
   memcpy(state->output + state->string_len, str, len);
   state->string_len += len;
@@ -99,7 +99,7 @@ static void json_writer_output_string(void *userdata, const char *str) {
  * the end of the current string, and advance our output pointer.
  */
 static void json_reader_string_clear(void *userdata) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   if (state->string) {
     GPR_ASSERT(state->string_ptr < state->input);
     *state->string_ptr++ = 0;
@@ -108,7 +108,7 @@ static void json_reader_string_clear(void *userdata) {
 }
 
 static void json_reader_string_add_char(void *userdata, uint32_t c) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   GPR_ASSERT(state->string_ptr < state->input);
   GPR_ASSERT(c <= 0xff);
   *state->string_ptr++ = (uint8_t)c;
@@ -149,7 +149,7 @@ static void json_reader_string_add_utf32(void *userdata, uint32_t c) {
  */
 static uint32_t json_reader_read_char(void *userdata) {
   uint32_t r;
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
 
   if (state->remaining_input == 0) return GRPC_JSON_READ_CHAR_EOF;
 
@@ -168,7 +168,7 @@ static uint32_t json_reader_read_char(void *userdata) {
  * our tree-in-progress inside our opaque structure.
  */
 static grpc_json *json_create_and_link(void *userdata, grpc_json_type type) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   grpc_json *json = grpc_json_create(type);
 
   json->parent = state->current_container;
@@ -194,7 +194,7 @@ static grpc_json *json_create_and_link(void *userdata, grpc_json_type type) {
 }
 
 static void json_reader_container_begins(void *userdata, grpc_json_type type) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   grpc_json *container;
 
   GPR_ASSERT(type == GRPC_JSON_ARRAY || type == GRPC_JSON_OBJECT);
@@ -215,7 +215,7 @@ static void json_reader_container_begins(void *userdata, grpc_json_type type) {
  */
 static grpc_json_type json_reader_container_ends(void *userdata) {
   grpc_json_type container_type = GRPC_JSON_TOP_LEVEL;
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
 
   GPR_ASSERT(state->current_container);
 
@@ -236,18 +236,18 @@ static grpc_json_type json_reader_container_ends(void *userdata) {
  * We'll keep it as a string, and leave it to the caller to evaluate it.
  */
 static void json_reader_set_key(void *userdata) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   state->key = state->string;
 }
 
 static void json_reader_set_string(void *userdata) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   grpc_json *json = json_create_and_link(userdata, GRPC_JSON_STRING);
   json->value = (char *)state->string;
 }
 
 static int json_reader_set_number(void *userdata) {
-  json_reader_userdata *state = userdata;
+  json_reader_userdata *state = (json_reader_userdata *)userdata;
   grpc_json *json = json_create_and_link(userdata, GRPC_JSON_NUMBER);
   json->value = (char *)state->string;
   return 1;
diff --git a/src/core/lib/profiling/timers.h b/src/core/lib/profiling/timers.h
index 58e6659e6d..7f02b4bf84 100644
--- a/src/core/lib/profiling/timers.h
+++ b/src/core/lib/profiling/timers.h
@@ -37,7 +37,8 @@ void gpr_timers_set_log_filename(const char *filename);
 
 void gpr_timer_set_enabled(int enabled);
 
-#if !(defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER))
+#if !(defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER) + \
+      defined(GRPC_CUSTOM_PROFILER))
 /* No profiling. No-op all the things. */
 #define GPR_TIMER_MARK(tag, important) \
   do {                                 \
@@ -56,6 +57,12 @@ void gpr_timer_set_enabled(int enabled);
 #if defined(GRPC_STAP_PROFILER) && defined(GRPC_BASIC_PROFILER)
 #error "GRPC_STAP_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
 #endif
+#if defined(GRPC_STAP_PROFILER) && defined(GRPC_CUSTOM_PROFILER)
+#error "GRPC_STAP_PROFILER and GRPC_CUSTOM_PROFILER are mutually exclusive."
+#endif
+#if defined(GRPC_CUSTOM_PROFILER) && defined(GRPC_BASIC_PROFILER)
+#error "GRPC_CUSTOM_PROFILER and GRPC_BASIC_PROFILER are mutually exclusive."
+#endif
 
 /* Generic profiling interface. */
 #define GPR_TIMER_MARK(tag, important) \
@@ -80,22 +87,25 @@ void gpr_timer_set_enabled(int enabled);
 #ifdef __cplusplus
 }
 
-#if (defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER))
+#if (defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER) + \
+     defined(GRPC_CUSTOM_PROFILER))
 namespace grpc {
 class ProfileScope {
  public:
-  ProfileScope(const char *desc, bool important) : desc_(desc) {
-    GPR_TIMER_BEGIN(desc_, important ? 1 : 0);
+  ProfileScope(const char *desc, bool important, const char *file, int line)
+      : desc_(desc) {
+    gpr_timer_begin(desc_, important ? 1 : 0, file, line);
   }
-  ~ProfileScope() { GPR_TIMER_END(desc_, 0); }
+  ~ProfileScope() { gpr_timer_end(desc_, 0, "n/a", 0); }
 
  private:
   const char *const desc_;
 };
-}
+}  // namespace grpc
 
-#define GPR_TIMER_SCOPE(tag, important) \
-  ::grpc::ProfileScope _profile_scope_##__LINE__((tag), (important))
+#define GPR_TIMER_SCOPE(tag, important)                                        \
+  ::grpc::ProfileScope _profile_scope_##__LINE__((tag), (important), __FILE__, \
+                                                 __LINE__)
 #else
 #define GPR_TIMER_SCOPE(tag, important) \
   do {                                  \
diff --git a/src/core/lib/security/credentials/google_default/google_default_credentials.c b/src/core/lib/security/credentials/google_default/google_default_credentials.c
index a2a8e289ee..691d66df69 100644
--- a/src/core/lib/security/credentials/google_default/google_default_credentials.c
+++ b/src/core/lib/security/credentials/google_default/google_default_credentials.c
@@ -79,7 +79,8 @@ static void on_compute_engine_detection_http_response(grpc_exec_ctx *exec_ctx,
   detector->is_done = 1;
   GRPC_LOG_IF_ERROR(
       "Pollset kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&detector->pollent), NULL));
+      grpc_pollset_kick(exec_ctx,
+                        grpc_polling_entity_pollset(&detector->pollent), NULL));
   gpr_mu_unlock(g_polling_mu);
 }
 
diff --git a/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c
index 531a88434f..dd7dd44e79 100644
--- a/src/core/lib/security/transport/client_auth_filter.c
+++ b/src/core/lib/security/transport/client_auth_filter.c
@@ -39,6 +39,8 @@
 
 /* We can have a per-call credentials. */
 typedef struct {
+  grpc_call_stack *owning_call;
+  grpc_call_combiner *call_combiner;
   grpc_call_credentials *creds;
   bool have_host;
   bool have_method;
@@ -49,17 +51,12 @@ typedef struct {
      pollset_set so that work can progress when this call wants work to progress
   */
   grpc_polling_entity *pollent;
-  gpr_atm security_context_set;
-  gpr_mu security_context_mu;
   grpc_credentials_mdelem_array md_array;
   grpc_linked_mdelem md_links[MAX_CREDENTIALS_METADATA_COUNT];
   grpc_auth_metadata_context auth_md_context;
-  grpc_closure closure;
-  // Either 0 (no cancellation and no async operation in flight),
-  // a grpc_closure* (if the lowest bit is 0),
-  // or a grpc_error* (if the lowest bit is 1).
-  gpr_atm cancellation_state;
-  grpc_closure cancel_closure;
+  grpc_closure async_result_closure;
+  grpc_closure check_call_host_cancel_closure;
+  grpc_closure get_request_metadata_cancel_closure;
 } call_data;
 
 /* We can have a per-channel credentials. */
@@ -68,43 +65,6 @@ typedef struct {
   grpc_auth_context *auth_context;
 } channel_data;
 
-static void decode_cancel_state(gpr_atm cancel_state, grpc_closure **func,
-                                grpc_error **error) {
-  // If the lowest bit is 1, the value is a grpc_error*.
-  // Otherwise, if non-zdero, the value is a grpc_closure*.
-  if (cancel_state & 1) {
-    *error = (grpc_error *)(cancel_state & ~(gpr_atm)1);
-  } else if (cancel_state != 0) {
-    *func = (grpc_closure *)cancel_state;
-  }
-}
-
-static gpr_atm encode_cancel_state_error(grpc_error *error) {
-  // Set the lowest bit to 1 to indicate that it's an error.
-  return (gpr_atm)1 | (gpr_atm)error;
-}
-
-// Returns an error if the call has been cancelled.  Otherwise, sets the
-// cancellation function to be called upon cancellation.
-static grpc_error *set_cancel_func(grpc_call_element *elem,
-                                   grpc_iomgr_cb_func func) {
-  call_data *calld = (call_data *)elem->call_data;
-  // Decode original state.
-  gpr_atm original_state = gpr_atm_acq_load(&calld->cancellation_state);
-  grpc_error *original_error = GRPC_ERROR_NONE;
-  grpc_closure *original_func = NULL;
-  decode_cancel_state(original_state, &original_func, &original_error);
-  // If error is set, return it.
-  if (original_error != GRPC_ERROR_NONE) return GRPC_ERROR_REF(original_error);
-  // Otherwise, store func.
-  GRPC_CLOSURE_INIT(&calld->cancel_closure, func, elem,
-                    grpc_schedule_on_exec_ctx);
-  GPR_ASSERT(((gpr_atm)&calld->cancel_closure & (gpr_atm)1) == 0);
-  gpr_atm_rel_store(&calld->cancellation_state,
-                    (gpr_atm)&calld->cancel_closure);
-  return GRPC_ERROR_NONE;
-}
-
 static void reset_auth_metadata_context(
     grpc_auth_metadata_context *auth_md_context) {
   if (auth_md_context->service_url != NULL) {
@@ -153,7 +113,8 @@ static void on_credentials_metadata(grpc_exec_ctx *exec_ctx, void *arg,
   } else {
     error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS,
                                GRPC_STATUS_UNAUTHENTICATED);
-    grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch, error);
+    grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch, error,
+                                                       calld->call_combiner);
   }
 }
 
@@ -191,8 +152,12 @@ static void cancel_get_request_metadata(grpc_exec_ctx *exec_ctx, void *arg,
                                         grpc_error *error) {
   grpc_call_element *elem = (grpc_call_element *)arg;
   call_data *calld = (call_data *)elem->call_data;
-  grpc_call_credentials_cancel_get_request_metadata(
-      exec_ctx, calld->creds, &calld->md_array, GRPC_ERROR_REF(error));
+  if (error != GRPC_ERROR_NONE) {
+    grpc_call_credentials_cancel_get_request_metadata(
+        exec_ctx, calld->creds, &calld->md_array, GRPC_ERROR_REF(error));
+  }
+  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call,
+                        "cancel_get_request_metadata");
 }
 
 static void send_security_metadata(grpc_exec_ctx *exec_ctx,
@@ -223,7 +188,8 @@ static void send_security_metadata(grpc_exec_ctx *exec_ctx,
           grpc_error_set_int(
               GRPC_ERROR_CREATE_FROM_STATIC_STRING(
                   "Incompatible credentials set on channel and call."),
-              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED));
+              GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED),
+          calld->call_combiner);
       return;
     }
   } else {
@@ -234,22 +200,25 @@ static void send_security_metadata(grpc_exec_ctx *exec_ctx,
   build_auth_metadata_context(&chand->security_connector->base,
                               chand->auth_context, calld);
 
-  grpc_error *cancel_error = set_cancel_func(elem, cancel_get_request_metadata);
-  if (cancel_error != GRPC_ERROR_NONE) {
-    grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch,
-                                                       cancel_error);
-    return;
-  }
   GPR_ASSERT(calld->pollent != NULL);
-  GRPC_CLOSURE_INIT(&calld->closure, on_credentials_metadata, batch,
-                    grpc_schedule_on_exec_ctx);
+
+  GRPC_CLOSURE_INIT(&calld->async_result_closure, on_credentials_metadata,
+                    batch, grpc_schedule_on_exec_ctx);
   grpc_error *error = GRPC_ERROR_NONE;
   if (grpc_call_credentials_get_request_metadata(
           exec_ctx, calld->creds, calld->pollent, calld->auth_md_context,
-          &calld->md_array, &calld->closure, &error)) {
+          &calld->md_array, &calld->async_result_closure, &error)) {
     // Synchronous return; invoke on_credentials_metadata() directly.
     on_credentials_metadata(exec_ctx, batch, error);
     GRPC_ERROR_UNREF(error);
+  } else {
+    // Async return; register cancellation closure with call combiner.
+    GRPC_CALL_STACK_REF(calld->owning_call, "cancel_get_request_metadata");
+    grpc_call_combiner_set_notify_on_cancel(
+        exec_ctx, calld->call_combiner,
+        GRPC_CLOSURE_INIT(&calld->get_request_metadata_cancel_closure,
+                          cancel_get_request_metadata, elem,
+                          grpc_schedule_on_exec_ctx));
   }
 }
 
@@ -258,7 +227,6 @@ static void on_host_checked(grpc_exec_ctx *exec_ctx, void *arg,
   grpc_transport_stream_op_batch *batch = (grpc_transport_stream_op_batch *)arg;
   grpc_call_element *elem = batch->handler_private.extra_arg;
   call_data *calld = elem->call_data;
-
   if (error == GRPC_ERROR_NONE) {
     send_security_metadata(exec_ctx, elem, batch);
   } else {
@@ -271,7 +239,8 @@ static void on_host_checked(grpc_exec_ctx *exec_ctx, void *arg,
         exec_ctx, batch,
         grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg),
                            GRPC_ERROR_INT_GRPC_STATUS,
-                           GRPC_STATUS_UNAUTHENTICATED));
+                           GRPC_STATUS_UNAUTHENTICATED),
+        calld->call_combiner);
     gpr_free(error_msg);
   }
 }
@@ -281,9 +250,12 @@ static void cancel_check_call_host(grpc_exec_ctx *exec_ctx, void *arg,
   grpc_call_element *elem = (grpc_call_element *)arg;
   call_data *calld = (call_data *)elem->call_data;
   channel_data *chand = (channel_data *)elem->channel_data;
-  grpc_channel_security_connector_cancel_check_call_host(
-      exec_ctx, chand->security_connector, &calld->closure,
-      GRPC_ERROR_REF(error));
+  if (error != GRPC_ERROR_NONE) {
+    grpc_channel_security_connector_cancel_check_call_host(
+        exec_ctx, chand->security_connector, &calld->async_result_closure,
+        GRPC_ERROR_REF(error));
+  }
+  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "cancel_check_call_host");
 }
 
 static void auth_start_transport_stream_op_batch(
@@ -295,52 +267,19 @@ static void auth_start_transport_stream_op_batch(
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
 
-  if (batch->cancel_stream) {
-    while (true) {
-      // Decode the original cancellation state.
-      gpr_atm original_state = gpr_atm_acq_load(&calld->cancellation_state);
-      grpc_error *cancel_error = GRPC_ERROR_NONE;
-      grpc_closure *func = NULL;
-      decode_cancel_state(original_state, &func, &cancel_error);
-      // If we had already set a cancellation error, there's nothing
-      // more to do.
-      if (cancel_error != GRPC_ERROR_NONE) break;
-      // If there's a cancel func, call it.
-      // Note that even if the cancel func has been changed by some
-      // other thread between when we decoded it and now, it will just
-      // be a no-op.
-      cancel_error = GRPC_ERROR_REF(batch->payload->cancel_stream.cancel_error);
-      if (func != NULL) {
-        GRPC_CLOSURE_SCHED(exec_ctx, func, GRPC_ERROR_REF(cancel_error));
-      }
-      // Encode the new error into cancellation state.
-      if (gpr_atm_full_cas(&calld->cancellation_state, original_state,
-                           encode_cancel_state_error(cancel_error))) {
-        break;  // Success.
-      }
-      // The cas failed, so try again.
-    }
-  } else {
-    /* double checked lock over security context to ensure it's set once */
-    if (gpr_atm_acq_load(&calld->security_context_set) == 0) {
-      gpr_mu_lock(&calld->security_context_mu);
-      if (gpr_atm_acq_load(&calld->security_context_set) == 0) {
-        GPR_ASSERT(batch->payload->context != NULL);
-        if (batch->payload->context[GRPC_CONTEXT_SECURITY].value == NULL) {
-          batch->payload->context[GRPC_CONTEXT_SECURITY].value =
-              grpc_client_security_context_create();
-          batch->payload->context[GRPC_CONTEXT_SECURITY].destroy =
-              grpc_client_security_context_destroy;
-        }
-        grpc_client_security_context *sec_ctx =
-            batch->payload->context[GRPC_CONTEXT_SECURITY].value;
-        GRPC_AUTH_CONTEXT_UNREF(sec_ctx->auth_context, "client auth filter");
-        sec_ctx->auth_context =
-            GRPC_AUTH_CONTEXT_REF(chand->auth_context, "client_auth_filter");
-        gpr_atm_rel_store(&calld->security_context_set, 1);
-      }
-      gpr_mu_unlock(&calld->security_context_mu);
+  if (!batch->cancel_stream) {
+    GPR_ASSERT(batch->payload->context != NULL);
+    if (batch->payload->context[GRPC_CONTEXT_SECURITY].value == NULL) {
+      batch->payload->context[GRPC_CONTEXT_SECURITY].value =
+          grpc_client_security_context_create();
+      batch->payload->context[GRPC_CONTEXT_SECURITY].destroy =
+          grpc_client_security_context_destroy;
     }
+    grpc_client_security_context *sec_ctx =
+        batch->payload->context[GRPC_CONTEXT_SECURITY].value;
+    GRPC_AUTH_CONTEXT_UNREF(sec_ctx->auth_context, "client auth filter");
+    sec_ctx->auth_context =
+        GRPC_AUTH_CONTEXT_REF(chand->auth_context, "client_auth_filter");
   }
 
   if (batch->send_initial_metadata) {
@@ -365,26 +304,27 @@ static void auth_start_transport_stream_op_batch(
       }
     }
     if (calld->have_host) {
-      grpc_error *cancel_error = set_cancel_func(elem, cancel_check_call_host);
-      if (cancel_error != GRPC_ERROR_NONE) {
-        grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch,
-                                                           cancel_error);
+      batch->handler_private.extra_arg = elem;
+      GRPC_CLOSURE_INIT(&calld->async_result_closure, on_host_checked, batch,
+                        grpc_schedule_on_exec_ctx);
+      char *call_host = grpc_slice_to_c_string(calld->host);
+      grpc_error *error = GRPC_ERROR_NONE;
+      if (grpc_channel_security_connector_check_call_host(
+              exec_ctx, chand->security_connector, call_host,
+              chand->auth_context, &calld->async_result_closure, &error)) {
+        // Synchronous return; invoke on_host_checked() directly.
+        on_host_checked(exec_ctx, batch, error);
+        GRPC_ERROR_UNREF(error);
       } else {
-        char *call_host = grpc_slice_to_c_string(calld->host);
-        batch->handler_private.extra_arg = elem;
-        grpc_error *error = GRPC_ERROR_NONE;
-        if (grpc_channel_security_connector_check_call_host(
-                exec_ctx, chand->security_connector, call_host,
-                chand->auth_context,
-                GRPC_CLOSURE_INIT(&calld->closure, on_host_checked, batch,
-                                  grpc_schedule_on_exec_ctx),
-                &error)) {
-          // Synchronous return; invoke on_host_checked() directly.
-          on_host_checked(exec_ctx, batch, error);
-          GRPC_ERROR_UNREF(error);
-        }
-        gpr_free(call_host);
+        // Async return; register cancellation closure with call combiner.
+        GRPC_CALL_STACK_REF(calld->owning_call, "cancel_check_call_host");
+        grpc_call_combiner_set_notify_on_cancel(
+            exec_ctx, calld->call_combiner,
+            GRPC_CLOSURE_INIT(&calld->check_call_host_cancel_closure,
+                              cancel_check_call_host, elem,
+                              grpc_schedule_on_exec_ctx));
       }
+      gpr_free(call_host);
       GPR_TIMER_END("auth_start_transport_stream_op_batch", 0);
       return; /* early exit */
     }
@@ -400,8 +340,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
   call_data *calld = elem->call_data;
-  memset(calld, 0, sizeof(*calld));
-  gpr_mu_init(&calld->security_context_mu);
+  calld->owning_call = args->call_stack;
+  calld->call_combiner = args->call_combiner;
   return GRPC_ERROR_NONE;
 }
 
@@ -426,12 +366,6 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_slice_unref_internal(exec_ctx, calld->method);
   }
   reset_auth_metadata_context(&calld->auth_md_context);
-  gpr_mu_destroy(&calld->security_context_mu);
-  gpr_atm cancel_state = gpr_atm_acq_load(&calld->cancellation_state);
-  grpc_error *cancel_error = GRPC_ERROR_NONE;
-  grpc_closure *cancel_func = NULL;
-  decode_cancel_state(cancel_state, &cancel_func, &cancel_error);
-  GRPC_ERROR_UNREF(cancel_error);
 }
 
 /* Constructor for channel_data */
@@ -490,6 +424,5 @@ const grpc_channel_filter grpc_client_auth_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "client-auth"};
diff --git a/src/core/lib/security/transport/secure_endpoint.c b/src/core/lib/security/transport/secure_endpoint.c
index 5e41b94ff8..ae5633b82c 100644
--- a/src/core/lib/security/transport/secure_endpoint.c
+++ b/src/core/lib/security/transport/secure_endpoint.c
@@ -34,7 +34,7 @@
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_grpc.h"
 
 #define STAGING_BUFFER_SIZE 8192
 
@@ -42,6 +42,7 @@ typedef struct {
   grpc_endpoint base;
   grpc_endpoint *wrapped_ep;
   struct tsi_frame_protector *protector;
+  struct tsi_zero_copy_grpc_protector *zero_copy_protector;
   gpr_mu protector_mu;
   /* saved upper level callbacks and user_data. */
   grpc_closure *read_cb;
@@ -67,6 +68,7 @@ static void destroy(grpc_exec_ctx *exec_ctx, secure_endpoint *secure_ep) {
   secure_endpoint *ep = secure_ep;
   grpc_endpoint_destroy(exec_ctx, ep->wrapped_ep);
   tsi_frame_protector_destroy(ep->protector);
+  tsi_zero_copy_grpc_protector_destroy(exec_ctx, ep->zero_copy_protector);
   grpc_slice_buffer_destroy_internal(exec_ctx, &ep->leftover_bytes);
   grpc_slice_unref_internal(exec_ctx, ep->read_staging_buffer);
   grpc_slice_unref_internal(exec_ctx, ep->write_staging_buffer);
@@ -159,51 +161,58 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *user_data,
     return;
   }
 
-  /* TODO(yangg) check error, maybe bail out early */
-  for (i = 0; i < ep->source_buffer.count; i++) {
-    grpc_slice encrypted = ep->source_buffer.slices[i];
-    uint8_t *message_bytes = GRPC_SLICE_START_PTR(encrypted);
-    size_t message_size = GRPC_SLICE_LENGTH(encrypted);
-
-    while (message_size > 0 || keep_looping) {
-      size_t unprotected_buffer_size_written = (size_t)(end - cur);
-      size_t processed_message_size = message_size;
-      gpr_mu_lock(&ep->protector_mu);
-      result = tsi_frame_protector_unprotect(ep->protector, message_bytes,
-                                             &processed_message_size, cur,
-                                             &unprotected_buffer_size_written);
-      gpr_mu_unlock(&ep->protector_mu);
-      if (result != TSI_OK) {
-        gpr_log(GPR_ERROR, "Decryption error: %s",
-                tsi_result_to_string(result));
-        break;
-      }
-      message_bytes += processed_message_size;
-      message_size -= processed_message_size;
-      cur += unprotected_buffer_size_written;
-
-      if (cur == end) {
-        flush_read_staging_buffer(ep, &cur, &end);
-        /* Force to enter the loop again to extract buffered bytes in protector.
-           The bytes could be buffered because of running out of staging_buffer.
-           If this happens at the end of all slices, doing another unprotect
-           avoids leaving data in the protector. */
-        keep_looping = 1;
-      } else if (unprotected_buffer_size_written > 0) {
-        keep_looping = 1;
-      } else {
-        keep_looping = 0;
+  if (ep->zero_copy_protector != NULL) {
+    // Use zero-copy grpc protector to unprotect.
+    result = tsi_zero_copy_grpc_protector_unprotect(
+        exec_ctx, ep->zero_copy_protector, &ep->source_buffer, ep->read_buffer);
+  } else {
+    // Use frame protector to unprotect.
+    /* TODO(yangg) check error, maybe bail out early */
+    for (i = 0; i < ep->source_buffer.count; i++) {
+      grpc_slice encrypted = ep->source_buffer.slices[i];
+      uint8_t *message_bytes = GRPC_SLICE_START_PTR(encrypted);
+      size_t message_size = GRPC_SLICE_LENGTH(encrypted);
+
+      while (message_size > 0 || keep_looping) {
+        size_t unprotected_buffer_size_written = (size_t)(end - cur);
+        size_t processed_message_size = message_size;
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_unprotect(
+            ep->protector, message_bytes, &processed_message_size, cur,
+            &unprotected_buffer_size_written);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) {
+          gpr_log(GPR_ERROR, "Decryption error: %s",
+                  tsi_result_to_string(result));
+          break;
+        }
+        message_bytes += processed_message_size;
+        message_size -= processed_message_size;
+        cur += unprotected_buffer_size_written;
+
+        if (cur == end) {
+          flush_read_staging_buffer(ep, &cur, &end);
+          /* Force to enter the loop again to extract buffered bytes in
+             protector. The bytes could be buffered because of running out of
+             staging_buffer. If this happens at the end of all slices, doing
+             another unprotect avoids leaving data in the protector. */
+          keep_looping = 1;
+        } else if (unprotected_buffer_size_written > 0) {
+          keep_looping = 1;
+        } else {
+          keep_looping = 0;
+        }
       }
+      if (result != TSI_OK) break;
     }
-    if (result != TSI_OK) break;
-  }
 
-  if (cur != GRPC_SLICE_START_PTR(ep->read_staging_buffer)) {
-    grpc_slice_buffer_add(
-        ep->read_buffer,
-        grpc_slice_split_head(
-            &ep->read_staging_buffer,
-            (size_t)(cur - GRPC_SLICE_START_PTR(ep->read_staging_buffer))));
+    if (cur != GRPC_SLICE_START_PTR(ep->read_staging_buffer)) {
+      grpc_slice_buffer_add(
+          ep->read_buffer,
+          grpc_slice_split_head(
+              &ep->read_staging_buffer,
+              (size_t)(cur - GRPC_SLICE_START_PTR(ep->read_staging_buffer))));
+    }
   }
 
   /* TODO(yangg) experiment with moving this block after read_cb to see if it
@@ -270,54 +279,62 @@ static void endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep,
     }
   }
 
-  for (i = 0; i < slices->count; i++) {
-    grpc_slice plain = slices->slices[i];
-    uint8_t *message_bytes = GRPC_SLICE_START_PTR(plain);
-    size_t message_size = GRPC_SLICE_LENGTH(plain);
-    while (message_size > 0) {
-      size_t protected_buffer_size_to_send = (size_t)(end - cur);
-      size_t processed_message_size = message_size;
-      gpr_mu_lock(&ep->protector_mu);
-      result = tsi_frame_protector_protect(ep->protector, message_bytes,
-                                           &processed_message_size, cur,
-                                           &protected_buffer_size_to_send);
-      gpr_mu_unlock(&ep->protector_mu);
-      if (result != TSI_OK) {
-        gpr_log(GPR_ERROR, "Encryption error: %s",
-                tsi_result_to_string(result));
-        break;
-      }
-      message_bytes += processed_message_size;
-      message_size -= processed_message_size;
-      cur += protected_buffer_size_to_send;
-
-      if (cur == end) {
-        flush_write_staging_buffer(ep, &cur, &end);
+  if (ep->zero_copy_protector != NULL) {
+    // Use zero-copy grpc protector to protect.
+    result = tsi_zero_copy_grpc_protector_protect(
+        exec_ctx, ep->zero_copy_protector, slices, &ep->output_buffer);
+  } else {
+    // Use frame protector to protect.
+    for (i = 0; i < slices->count; i++) {
+      grpc_slice plain = slices->slices[i];
+      uint8_t *message_bytes = GRPC_SLICE_START_PTR(plain);
+      size_t message_size = GRPC_SLICE_LENGTH(plain);
+      while (message_size > 0) {
+        size_t protected_buffer_size_to_send = (size_t)(end - cur);
+        size_t processed_message_size = message_size;
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_protect(ep->protector, message_bytes,
+                                             &processed_message_size, cur,
+                                             &protected_buffer_size_to_send);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) {
+          gpr_log(GPR_ERROR, "Encryption error: %s",
+                  tsi_result_to_string(result));
+          break;
+        }
+        message_bytes += processed_message_size;
+        message_size -= processed_message_size;
+        cur += protected_buffer_size_to_send;
+
+        if (cur == end) {
+          flush_write_staging_buffer(ep, &cur, &end);
+        }
       }
-    }
-    if (result != TSI_OK) break;
-  }
-  if (result == TSI_OK) {
-    size_t still_pending_size;
-    do {
-      size_t protected_buffer_size_to_send = (size_t)(end - cur);
-      gpr_mu_lock(&ep->protector_mu);
-      result = tsi_frame_protector_protect_flush(ep->protector, cur,
-                                                 &protected_buffer_size_to_send,
-                                                 &still_pending_size);
-      gpr_mu_unlock(&ep->protector_mu);
       if (result != TSI_OK) break;
-      cur += protected_buffer_size_to_send;
-      if (cur == end) {
-        flush_write_staging_buffer(ep, &cur, &end);
+    }
+    if (result == TSI_OK) {
+      size_t still_pending_size;
+      do {
+        size_t protected_buffer_size_to_send = (size_t)(end - cur);
+        gpr_mu_lock(&ep->protector_mu);
+        result = tsi_frame_protector_protect_flush(
+            ep->protector, cur, &protected_buffer_size_to_send,
+            &still_pending_size);
+        gpr_mu_unlock(&ep->protector_mu);
+        if (result != TSI_OK) break;
+        cur += protected_buffer_size_to_send;
+        if (cur == end) {
+          flush_write_staging_buffer(ep, &cur, &end);
+        }
+      } while (still_pending_size > 0);
+      if (cur != GRPC_SLICE_START_PTR(ep->write_staging_buffer)) {
+        grpc_slice_buffer_add(
+            &ep->output_buffer,
+            grpc_slice_split_head(
+                &ep->write_staging_buffer,
+                (size_t)(cur -
+                         GRPC_SLICE_START_PTR(ep->write_staging_buffer))));
       }
-    } while (still_pending_size > 0);
-    if (cur != GRPC_SLICE_START_PTR(ep->write_staging_buffer)) {
-      grpc_slice_buffer_add(
-          &ep->output_buffer,
-          grpc_slice_split_head(
-              &ep->write_staging_buffer,
-              (size_t)(cur - GRPC_SLICE_START_PTR(ep->write_staging_buffer))));
     }
   }
 
@@ -389,13 +406,16 @@ static const grpc_endpoint_vtable vtable = {endpoint_read,
                                             endpoint_get_fd};
 
 grpc_endpoint *grpc_secure_endpoint_create(
-    struct tsi_frame_protector *protector, grpc_endpoint *transport,
-    grpc_slice *leftover_slices, size_t leftover_nslices) {
+    struct tsi_frame_protector *protector,
+    struct tsi_zero_copy_grpc_protector *zero_copy_protector,
+    grpc_endpoint *transport, grpc_slice *leftover_slices,
+    size_t leftover_nslices) {
   size_t i;
   secure_endpoint *ep = (secure_endpoint *)gpr_malloc(sizeof(secure_endpoint));
   ep->base.vtable = &vtable;
   ep->wrapped_ep = transport;
   ep->protector = protector;
+  ep->zero_copy_protector = zero_copy_protector;
   grpc_slice_buffer_init(&ep->leftover_bytes);
   for (i = 0; i < leftover_nslices; i++) {
     grpc_slice_buffer_add(&ep->leftover_bytes,
diff --git a/src/core/lib/security/transport/secure_endpoint.h b/src/core/lib/security/transport/secure_endpoint.h
index 1c5555f3df..3323a6ff42 100644
--- a/src/core/lib/security/transport/secure_endpoint.h
+++ b/src/core/lib/security/transport/secure_endpoint.h
@@ -23,12 +23,17 @@
 #include "src/core/lib/iomgr/endpoint.h"
 
 struct tsi_frame_protector;
+struct tsi_zero_copy_grpc_protector;
 
 extern grpc_tracer_flag grpc_trace_secure_endpoint;
 
-/* Takes ownership of protector and to_wrap, and refs leftover_slices. */
+/* Takes ownership of protector, zero_copy_protector, and to_wrap, and refs
+ * leftover_slices. If zero_copy_protector is not NULL, protector will never be
+ * used. */
 grpc_endpoint *grpc_secure_endpoint_create(
-    struct tsi_frame_protector *protector, grpc_endpoint *to_wrap,
-    grpc_slice *leftover_slices, size_t leftover_nslices);
+    struct tsi_frame_protector *protector,
+    struct tsi_zero_copy_grpc_protector *zero_copy_protector,
+    grpc_endpoint *to_wrap, grpc_slice *leftover_slices,
+    size_t leftover_nslices);
 
 #endif /* GRPC_CORE_LIB_SECURITY_TRANSPORT_SECURE_ENDPOINT_H */
diff --git a/src/core/lib/security/transport/security_connector.c b/src/core/lib/security/transport/security_connector.c
index a7568b995f..2a9e939d40 100644
--- a/src/core/lib/security/transport/security_connector.c
+++ b/src/core/lib/security/transport/security_connector.c
@@ -455,14 +455,14 @@ grpc_server_security_connector *grpc_fake_server_security_connector_create(
 
 typedef struct {
   grpc_channel_security_connector base;
-  tsi_ssl_client_handshaker_factory *handshaker_factory;
+  tsi_ssl_client_handshaker_factory *client_handshaker_factory;
   char *target_name;
   char *overridden_target_name;
 } grpc_ssl_channel_security_connector;
 
 typedef struct {
   grpc_server_security_connector base;
-  tsi_ssl_server_handshaker_factory *handshaker_factory;
+  tsi_ssl_server_handshaker_factory *server_handshaker_factory;
 } grpc_ssl_server_security_connector;
 
 static void ssl_channel_destroy(grpc_exec_ctx *exec_ctx,
@@ -470,9 +470,8 @@ static void ssl_channel_destroy(grpc_exec_ctx *exec_ctx,
   grpc_ssl_channel_security_connector *c =
       (grpc_ssl_channel_security_connector *)sc;
   grpc_call_credentials_unref(exec_ctx, c->base.request_metadata_creds);
-  if (c->handshaker_factory != NULL) {
-    tsi_ssl_client_handshaker_factory_destroy(c->handshaker_factory);
-  }
+  tsi_ssl_client_handshaker_factory_unref(c->client_handshaker_factory);
+  c->client_handshaker_factory = NULL;
   if (c->target_name != NULL) gpr_free(c->target_name);
   if (c->overridden_target_name != NULL) gpr_free(c->overridden_target_name);
   gpr_free(sc);
@@ -482,9 +481,8 @@ static void ssl_server_destroy(grpc_exec_ctx *exec_ctx,
                                grpc_security_connector *sc) {
   grpc_ssl_server_security_connector *c =
       (grpc_ssl_server_security_connector *)sc;
-  if (c->handshaker_factory != NULL) {
-    tsi_ssl_server_handshaker_factory_destroy(c->handshaker_factory);
-  }
+  tsi_ssl_server_handshaker_factory_unref(c->server_handshaker_factory);
+  c->server_handshaker_factory = NULL;
   gpr_free(sc);
 }
 
@@ -496,7 +494,7 @@ static void ssl_channel_add_handshakers(grpc_exec_ctx *exec_ctx,
   // Instantiate TSI handshaker.
   tsi_handshaker *tsi_hs = NULL;
   tsi_result result = tsi_ssl_client_handshaker_factory_create_handshaker(
-      c->handshaker_factory,
+      c->client_handshaker_factory,
       c->overridden_target_name != NULL ? c->overridden_target_name
                                         : c->target_name,
       &tsi_hs);
@@ -521,7 +519,7 @@ static void ssl_server_add_handshakers(grpc_exec_ctx *exec_ctx,
   // Instantiate TSI handshaker.
   tsi_handshaker *tsi_hs = NULL;
   tsi_result result = tsi_ssl_server_handshaker_factory_create_handshaker(
-      c->handshaker_factory, &tsi_hs);
+      c->server_handshaker_factory, &tsi_hs);
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
             tsi_result_to_string(result));
@@ -852,7 +850,7 @@ grpc_security_status grpc_ssl_channel_security_connector_create(
   result = tsi_create_ssl_client_handshaker_factory(
       has_key_cert_pair ? &config->pem_key_cert_pair : NULL, pem_root_certs,
       ssl_cipher_suites(), alpn_protocol_strings, (uint16_t)num_alpn_protocols,
-      &c->handshaker_factory);
+      &c->client_handshaker_factory);
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
             tsi_result_to_string(result));
@@ -897,7 +895,7 @@ grpc_security_status grpc_ssl_server_security_connector_create(
       config->pem_root_certs, get_tsi_client_certificate_request_type(
                                   config->client_certificate_request),
       ssl_cipher_suites(), alpn_protocol_strings, (uint16_t)num_alpn_protocols,
-      &c->handshaker_factory);
+      &c->server_handshaker_factory);
   if (result != TSI_OK) {
     gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
             tsi_result_to_string(result));
diff --git a/src/core/lib/security/transport/security_handshaker.c b/src/core/lib/security/transport/security_handshaker.c
index fc9c9f980f..3d19605617 100644
--- a/src/core/lib/security/transport/security_handshaker.c
+++ b/src/core/lib/security/transport/security_handshaker.c
@@ -32,6 +32,7 @@
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/security/transport/tsi_error.h"
 #include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/transport_security_grpc.h"
 
 #define GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE 256
 
@@ -127,24 +128,36 @@ static void security_handshake_failed_locked(grpc_exec_ctx *exec_ctx,
   GRPC_CLOSURE_SCHED(exec_ctx, h->on_handshake_done, error);
 }
 
-static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
-                            grpc_error *error) {
-  security_handshaker *h = arg;
-  gpr_mu_lock(&h->mu);
+static void on_peer_checked_inner(grpc_exec_ctx *exec_ctx,
+                                  security_handshaker *h, grpc_error *error) {
   if (error != GRPC_ERROR_NONE || h->shutdown) {
     security_handshake_failed_locked(exec_ctx, h, GRPC_ERROR_REF(error));
-    goto done;
+    return;
   }
-  // Create frame protector.
-  tsi_frame_protector *protector;
-  tsi_result result = tsi_handshaker_result_create_frame_protector(
-      h->handshaker_result, NULL, &protector);
-  if (result != TSI_OK) {
+  // Create zero-copy frame protector, if implemented.
+  tsi_zero_copy_grpc_protector *zero_copy_protector = NULL;
+  tsi_result result = tsi_handshaker_result_create_zero_copy_grpc_protector(
+      exec_ctx, h->handshaker_result, NULL, &zero_copy_protector);
+  if (result != TSI_OK && result != TSI_UNIMPLEMENTED) {
     error = grpc_set_tsi_error_result(
-        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Frame protector creation failed"),
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+            "Zero-copy frame protector creation failed"),
         result);
     security_handshake_failed_locked(exec_ctx, h, error);
-    goto done;
+    return;
+  }
+  // Create frame protector if zero-copy frame protector is NULL.
+  tsi_frame_protector *protector = NULL;
+  if (zero_copy_protector == NULL) {
+    result = tsi_handshaker_result_create_frame_protector(h->handshaker_result,
+                                                          NULL, &protector);
+    if (result != TSI_OK) {
+      error = grpc_set_tsi_error_result(GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+                                            "Frame protector creation failed"),
+                                        result);
+      security_handshake_failed_locked(exec_ctx, h, error);
+      return;
+    }
   }
   // Get unused bytes.
   const unsigned char *unused_bytes = NULL;
@@ -155,12 +168,12 @@ static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
   if (unused_bytes_size > 0) {
     grpc_slice slice =
         grpc_slice_from_copied_buffer((char *)unused_bytes, unused_bytes_size);
-    h->args->endpoint =
-        grpc_secure_endpoint_create(protector, h->args->endpoint, &slice, 1);
+    h->args->endpoint = grpc_secure_endpoint_create(
+        protector, zero_copy_protector, h->args->endpoint, &slice, 1);
     grpc_slice_unref_internal(exec_ctx, slice);
   } else {
-    h->args->endpoint =
-        grpc_secure_endpoint_create(protector, h->args->endpoint, NULL, 0);
+    h->args->endpoint = grpc_secure_endpoint_create(
+        protector, zero_copy_protector, h->args->endpoint, NULL, 0);
   }
   tsi_handshaker_result_destroy(h->handshaker_result);
   h->handshaker_result = NULL;
@@ -177,7 +190,13 @@ static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
   // Set shutdown to true so that subsequent calls to
   // security_handshaker_shutdown() do nothing.
   h->shutdown = true;
-done:
+}
+
+static void on_peer_checked(grpc_exec_ctx *exec_ctx, void *arg,
+                            grpc_error *error) {
+  security_handshaker *h = (security_handshaker *)arg;
+  gpr_mu_lock(&h->mu);
+  on_peer_checked_inner(exec_ctx, h, error);
   gpr_mu_unlock(&h->mu);
   security_handshaker_unref(exec_ctx, h);
 }
@@ -239,7 +258,7 @@ static grpc_error *on_handshake_next_done_locked(
 static void on_handshake_next_done_grpc_wrapper(
     tsi_result result, void *user_data, const unsigned char *bytes_to_send,
     size_t bytes_to_send_size, tsi_handshaker_result *handshaker_result) {
-  security_handshaker *h = user_data;
+  security_handshaker *h = (security_handshaker *)user_data;
   // This callback will be invoked by TSI in a non-grpc thread, so it's
   // safe to create our own exec_ctx here.
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
@@ -281,7 +300,7 @@ static grpc_error *do_handshaker_next_locked(
 
 static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
                                                  void *arg, grpc_error *error) {
-  security_handshaker *h = arg;
+  security_handshaker *h = (security_handshaker *)arg;
   gpr_mu_lock(&h->mu);
   if (error != GRPC_ERROR_NONE || h->shutdown) {
     security_handshake_failed_locked(
@@ -298,7 +317,8 @@ static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
     bytes_received_size += GRPC_SLICE_LENGTH(h->args->read_buffer->slices[i]);
   }
   if (bytes_received_size > h->handshake_buffer_size) {
-    h->handshake_buffer = gpr_realloc(h->handshake_buffer, bytes_received_size);
+    h->handshake_buffer =
+        (uint8_t *)gpr_realloc(h->handshake_buffer, bytes_received_size);
     h->handshake_buffer_size = bytes_received_size;
   }
   size_t offset = 0;
@@ -323,7 +343,7 @@ static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
 
 static void on_handshake_data_sent_to_peer(grpc_exec_ctx *exec_ctx, void *arg,
                                            grpc_error *error) {
-  security_handshaker *h = arg;
+  security_handshaker *h = (security_handshaker *)arg;
   gpr_mu_lock(&h->mu);
   if (error != GRPC_ERROR_NONE || h->shutdown) {
     security_handshake_failed_locked(
@@ -400,14 +420,15 @@ static const grpc_handshaker_vtable security_handshaker_vtable = {
 static grpc_handshaker *security_handshaker_create(
     grpc_exec_ctx *exec_ctx, tsi_handshaker *handshaker,
     grpc_security_connector *connector) {
-  security_handshaker *h = gpr_zalloc(sizeof(security_handshaker));
+  security_handshaker *h =
+      (security_handshaker *)gpr_zalloc(sizeof(security_handshaker));
   grpc_handshaker_init(&security_handshaker_vtable, &h->base);
   h->handshaker = handshaker;
   h->connector = GRPC_SECURITY_CONNECTOR_REF(connector, "handshake");
   gpr_mu_init(&h->mu);
   gpr_ref_init(&h->refs, 1);
   h->handshake_buffer_size = GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE;
-  h->handshake_buffer = gpr_malloc(h->handshake_buffer_size);
+  h->handshake_buffer = (uint8_t *)gpr_malloc(h->handshake_buffer_size);
   GRPC_CLOSURE_INIT(&h->on_handshake_data_sent_to_peer,
                     on_handshake_data_sent_to_peer, h,
                     grpc_schedule_on_exec_ctx);
@@ -450,7 +471,7 @@ static const grpc_handshaker_vtable fail_handshaker_vtable = {
     fail_handshaker_do_handshake};
 
 static grpc_handshaker *fail_handshaker_create() {
-  grpc_handshaker *h = gpr_malloc(sizeof(*h));
+  grpc_handshaker *h = (grpc_handshaker *)gpr_malloc(sizeof(*h));
   grpc_handshaker_init(&fail_handshaker_vtable, h);
   return h;
 }
diff --git a/src/core/lib/security/transport/server_auth_filter.c b/src/core/lib/security/transport/server_auth_filter.c
index 9bf3f0ca0f..7f523c0883 100644
--- a/src/core/lib/security/transport/server_auth_filter.c
+++ b/src/core/lib/security/transport/server_auth_filter.c
@@ -26,7 +26,15 @@
 #include "src/core/lib/security/transport/auth_filters.h"
 #include "src/core/lib/slice/slice_internal.h"
 
+typedef enum {
+  STATE_INIT = 0,
+  STATE_DONE,
+  STATE_CANCELLED,
+} async_state;
+
 typedef struct call_data {
+  grpc_call_combiner *call_combiner;
+  grpc_call_stack *owning_call;
   grpc_transport_stream_op_batch *recv_initial_metadata_batch;
   grpc_closure *original_recv_initial_metadata_ready;
   grpc_closure recv_initial_metadata_ready;
@@ -34,6 +42,8 @@ typedef struct call_data {
   const grpc_metadata *consumed_md;
   size_t num_consumed_md;
   grpc_auth_context *auth_context;
+  grpc_closure cancel_closure;
+  gpr_atm state;  // async_state
 } call_data;
 
 typedef struct channel_data {
@@ -78,54 +88,94 @@ static grpc_filtered_mdelem remove_consumed_md(grpc_exec_ctx *exec_ctx,
   return GRPC_FILTERED_MDELEM(md);
 }
 
-/* called from application code */
-static void on_md_processing_done(
-    void *user_data, const grpc_metadata *consumed_md, size_t num_consumed_md,
-    const grpc_metadata *response_md, size_t num_response_md,
-    grpc_status_code status, const char *error_details) {
-  grpc_call_element *elem = user_data;
+static void on_md_processing_done_inner(grpc_exec_ctx *exec_ctx,
+                                        grpc_call_element *elem,
+                                        const grpc_metadata *consumed_md,
+                                        size_t num_consumed_md,
+                                        const grpc_metadata *response_md,
+                                        size_t num_response_md,
+                                        grpc_error *error) {
   call_data *calld = elem->call_data;
   grpc_transport_stream_op_batch *batch = calld->recv_initial_metadata_batch;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   /* TODO(jboeuf): Implement support for response_md. */
   if (response_md != NULL && num_response_md > 0) {
     gpr_log(GPR_INFO,
             "response_md in auth metadata processing not supported for now. "
             "Ignoring...");
   }
-  grpc_error *error = GRPC_ERROR_NONE;
-  if (status == GRPC_STATUS_OK) {
+  if (error == GRPC_ERROR_NONE) {
     calld->consumed_md = consumed_md;
     calld->num_consumed_md = num_consumed_md;
     error = grpc_metadata_batch_filter(
-        &exec_ctx, batch->payload->recv_initial_metadata.recv_initial_metadata,
+        exec_ctx, batch->payload->recv_initial_metadata.recv_initial_metadata,
         remove_consumed_md, elem, "Response metadata filtering error");
-  } else {
-    if (error_details == NULL) {
-      error_details = "Authentication metadata processing failed.";
+  }
+  GRPC_CLOSURE_SCHED(exec_ctx, calld->original_recv_initial_metadata_ready,
+                     error);
+}
+
+// Called from application code.
+static void on_md_processing_done(
+    void *user_data, const grpc_metadata *consumed_md, size_t num_consumed_md,
+    const grpc_metadata *response_md, size_t num_response_md,
+    grpc_status_code status, const char *error_details) {
+  grpc_call_element *elem = user_data;
+  call_data *calld = elem->call_data;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  // If the call was not cancelled while we were in flight, process the result.
+  if (gpr_atm_full_cas(&calld->state, (gpr_atm)STATE_INIT,
+                       (gpr_atm)STATE_DONE)) {
+    grpc_error *error = GRPC_ERROR_NONE;
+    if (status != GRPC_STATUS_OK) {
+      if (error_details == NULL) {
+        error_details = "Authentication metadata processing failed.";
+      }
+      error = grpc_error_set_int(
+          GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_details),
+          GRPC_ERROR_INT_GRPC_STATUS, status);
     }
-    error =
-        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_details),
-                           GRPC_ERROR_INT_GRPC_STATUS, status);
+    on_md_processing_done_inner(&exec_ctx, elem, consumed_md, num_consumed_md,
+                                response_md, num_response_md, error);
   }
+  // Clean up.
   for (size_t i = 0; i < calld->md.count; i++) {
     grpc_slice_unref_internal(&exec_ctx, calld->md.metadata[i].key);
     grpc_slice_unref_internal(&exec_ctx, calld->md.metadata[i].value);
   }
   grpc_metadata_array_destroy(&calld->md);
-  GRPC_CLOSURE_SCHED(&exec_ctx, calld->original_recv_initial_metadata_ready,
-                     error);
+  GRPC_CALL_STACK_UNREF(&exec_ctx, calld->owning_call, "server_auth_metadata");
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
+static void cancel_call(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  call_data *calld = elem->call_data;
+  // If the result was not already processed, invoke the callback now.
+  if (error != GRPC_ERROR_NONE &&
+      gpr_atm_full_cas(&calld->state, (gpr_atm)STATE_INIT,
+                       (gpr_atm)STATE_CANCELLED)) {
+    on_md_processing_done_inner(exec_ctx, elem, NULL, 0, NULL, 0,
+                                GRPC_ERROR_REF(error));
+  }
+  GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "cancel_call");
+}
+
 static void recv_initial_metadata_ready(grpc_exec_ctx *exec_ctx, void *arg,
                                         grpc_error *error) {
-  grpc_call_element *elem = arg;
+  grpc_call_element *elem = (grpc_call_element *)arg;
   channel_data *chand = elem->channel_data;
   call_data *calld = elem->call_data;
   grpc_transport_stream_op_batch *batch = calld->recv_initial_metadata_batch;
   if (error == GRPC_ERROR_NONE) {
     if (chand->creds != NULL && chand->creds->processor.process != NULL) {
+      // We're calling out to the application, so we need to make sure
+      // to drop the call combiner early if we get cancelled.
+      GRPC_CALL_STACK_REF(calld->owning_call, "cancel_call");
+      GRPC_CLOSURE_INIT(&calld->cancel_closure, cancel_call, elem,
+                        grpc_schedule_on_exec_ctx);
+      grpc_call_combiner_set_notify_on_cancel(exec_ctx, calld->call_combiner,
+                                              &calld->cancel_closure);
+      GRPC_CALL_STACK_REF(calld->owning_call, "server_auth_metadata");
       calld->md = metadata_batch_to_md_array(
           batch->payload->recv_initial_metadata.recv_initial_metadata);
       chand->creds->processor.process(
@@ -159,6 +209,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   const grpc_call_element_args *args) {
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
+  calld->call_combiner = args->call_combiner;
+  calld->owning_call = args->call_stack;
   GRPC_CLOSURE_INIT(&calld->recv_initial_metadata_ready,
                     recv_initial_metadata_ready, elem,
                     grpc_schedule_on_exec_ctx);
@@ -218,6 +270,5 @@ const grpc_channel_filter grpc_server_auth_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "server-auth"};
diff --git a/src/core/lib/slice/b64.c b/src/core/lib/slice/b64.c
index d02f303bdb..50264719a4 100644
--- a/src/core/lib/slice/b64.c
+++ b/src/core/lib/slice/b64.c
@@ -58,7 +58,7 @@ char *grpc_base64_encode(const void *vdata, size_t data_size, int url_safe,
                          int multiline) {
   size_t result_projected_size =
       grpc_base64_estimate_encoded_size(data_size, url_safe, multiline);
-  char *result = gpr_malloc(result_projected_size);
+  char *result = (char *)gpr_malloc(result_projected_size);
   grpc_base64_encode_core(result, vdata, data_size, url_safe, multiline);
   return result;
 }
@@ -75,7 +75,7 @@ size_t grpc_base64_estimate_encoded_size(size_t data_size, int url_safe,
 
 void grpc_base64_encode_core(char *result, const void *vdata, size_t data_size,
                              int url_safe, int multiline) {
-  const unsigned char *data = vdata;
+  const unsigned char *data = (const unsigned char *)vdata;
   const char *base64_chars =
       url_safe ? base64_url_safe_chars : base64_url_unsafe_chars;
   const size_t result_projected_size =
diff --git a/src/core/lib/slice/slice.c b/src/core/lib/slice/slice.c
index 8a8087805c..0764eda052 100644
--- a/src/core/lib/slice/slice.c
+++ b/src/core/lib/slice/slice.c
@@ -27,7 +27,7 @@
 #include "src/core/lib/iomgr/exec_ctx.h"
 
 char *grpc_slice_to_c_string(grpc_slice slice) {
-  char *out = gpr_malloc(GRPC_SLICE_LENGTH(slice) + 1);
+  char *out = (char *)gpr_malloc(GRPC_SLICE_LENGTH(slice) + 1);
   memcpy(out, GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice));
   out[GRPC_SLICE_LENGTH(slice)] = 0;
   return out;
@@ -105,12 +105,12 @@ typedef struct new_slice_refcount {
 } new_slice_refcount;
 
 static void new_slice_ref(void *p) {
-  new_slice_refcount *r = p;
+  new_slice_refcount *r = (new_slice_refcount *)p;
   gpr_ref(&r->refs);
 }
 
 static void new_slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
-  new_slice_refcount *r = p;
+  new_slice_refcount *r = (new_slice_refcount *)p;
   if (gpr_unref(&r->refs)) {
     r->user_destroy(r->user_data);
     gpr_free(r);
@@ -125,7 +125,8 @@ grpc_slice grpc_slice_new_with_user_data(void *p, size_t len,
                                          void (*destroy)(void *),
                                          void *user_data) {
   grpc_slice slice;
-  new_slice_refcount *rc = gpr_malloc(sizeof(new_slice_refcount));
+  new_slice_refcount *rc =
+      (new_slice_refcount *)gpr_malloc(sizeof(new_slice_refcount));
   gpr_ref_init(&rc->refs, 1);
   rc->rc.vtable = &new_slice_vtable;
   rc->rc.sub_refcount = &rc->rc;
@@ -133,7 +134,7 @@ grpc_slice grpc_slice_new_with_user_data(void *p, size_t len,
   rc->user_data = user_data;
 
   slice.refcount = &rc->rc;
-  slice.data.refcounted.bytes = p;
+  slice.data.refcounted.bytes = (uint8_t *)p;
   slice.data.refcounted.length = len;
   return slice;
 }
@@ -154,12 +155,12 @@ typedef struct new_with_len_slice_refcount {
 } new_with_len_slice_refcount;
 
 static void new_with_len_ref(void *p) {
-  new_with_len_slice_refcount *r = p;
+  new_with_len_slice_refcount *r = (new_with_len_slice_refcount *)p;
   gpr_ref(&r->refs);
 }
 
 static void new_with_len_unref(grpc_exec_ctx *exec_ctx, void *p) {
-  new_with_len_slice_refcount *r = p;
+  new_with_len_slice_refcount *r = (new_with_len_slice_refcount *)p;
   if (gpr_unref(&r->refs)) {
     r->user_destroy(r->user_data, r->user_length);
     gpr_free(r);
@@ -173,8 +174,8 @@ static const grpc_slice_refcount_vtable new_with_len_vtable = {
 grpc_slice grpc_slice_new_with_len(void *p, size_t len,
                                    void (*destroy)(void *, size_t)) {
   grpc_slice slice;
-  new_with_len_slice_refcount *rc =
-      gpr_malloc(sizeof(new_with_len_slice_refcount));
+  new_with_len_slice_refcount *rc = (new_with_len_slice_refcount *)gpr_malloc(
+      sizeof(new_with_len_slice_refcount));
   gpr_ref_init(&rc->refs, 1);
   rc->rc.vtable = &new_with_len_vtable;
   rc->rc.sub_refcount = &rc->rc;
@@ -183,7 +184,7 @@ grpc_slice grpc_slice_new_with_len(void *p, size_t len,
   rc->user_length = len;
 
   slice.refcount = &rc->rc;
-  slice.data.refcounted.bytes = p;
+  slice.data.refcounted.bytes = (uint8_t *)p;
   slice.data.refcounted.length = len;
   return slice;
 }
@@ -205,12 +206,12 @@ typedef struct {
 } malloc_refcount;
 
 static void malloc_ref(void *p) {
-  malloc_refcount *r = p;
+  malloc_refcount *r = (malloc_refcount *)p;
   gpr_ref(&r->refs);
 }
 
 static void malloc_unref(grpc_exec_ctx *exec_ctx, void *p) {
-  malloc_refcount *r = p;
+  malloc_refcount *r = (malloc_refcount *)p;
   if (gpr_unref(&r->refs)) {
     gpr_free(r);
   }
@@ -232,7 +233,8 @@ grpc_slice grpc_slice_malloc_large(size_t length) {
      refcount is a malloc_refcount
      bytes is an array of bytes of the requested length
      Both parts are placed in the same allocation returned from gpr_malloc */
-  malloc_refcount *rc = gpr_malloc(sizeof(malloc_refcount) + length);
+  malloc_refcount *rc =
+      (malloc_refcount *)gpr_malloc(sizeof(malloc_refcount) + length);
 
   /* Initial refcount on rc is 1 - and it's up to the caller to release
      this reference. */
@@ -451,7 +453,7 @@ int grpc_slice_rchr(grpc_slice s, char c) {
 
 int grpc_slice_chr(grpc_slice s, char c) {
   const char *b = (const char *)GRPC_SLICE_START_PTR(s);
-  const char *p = memchr(b, c, GRPC_SLICE_LENGTH(s));
+  const char *p = (const char *)memchr(b, c, GRPC_SLICE_LENGTH(s));
   return p == NULL ? -1 : (int)(p - b);
 }
 
diff --git a/src/core/lib/slice/slice_buffer.c b/src/core/lib/slice/slice_buffer.c
index a54a997a0d..63ffc0b00d 100644
--- a/src/core/lib/slice/slice_buffer.c
+++ b/src/core/lib/slice/slice_buffer.c
@@ -45,11 +45,12 @@ static void maybe_embiggen(grpc_slice_buffer *sb) {
       sb->capacity = GROW(sb->capacity);
       GPR_ASSERT(sb->capacity > slice_count);
       if (sb->base_slices == sb->inlined) {
-        sb->base_slices = gpr_malloc(sb->capacity * sizeof(grpc_slice));
+        sb->base_slices =
+            (grpc_slice *)gpr_malloc(sb->capacity * sizeof(grpc_slice));
         memcpy(sb->base_slices, sb->inlined, slice_count * sizeof(grpc_slice));
       } else {
-        sb->base_slices =
-            gpr_realloc(sb->base_slices, sb->capacity * sizeof(grpc_slice));
+        sb->base_slices = (grpc_slice *)gpr_realloc(
+            sb->base_slices, sb->capacity * sizeof(grpc_slice));
       }
 
       sb->slices = sb->base_slices + slice_offset;
@@ -291,7 +292,7 @@ void grpc_slice_buffer_move_first_no_ref(grpc_slice_buffer *src, size_t n,
 void grpc_slice_buffer_move_first_into_buffer(grpc_exec_ctx *exec_ctx,
                                               grpc_slice_buffer *src, size_t n,
                                               void *dst) {
-  char *dstp = dst;
+  char *dstp = (char *)dst;
   GPR_ASSERT(src->length >= n);
 
   while (n > 0) {
diff --git a/src/core/lib/slice/slice_hash_table.c b/src/core/lib/slice/slice_hash_table.c
index 1866ed25ac..6c2c9c201c 100644
--- a/src/core/lib/slice/slice_hash_table.c
+++ b/src/core/lib/slice/slice_hash_table.c
@@ -60,14 +60,15 @@ grpc_slice_hash_table* grpc_slice_hash_table_create(
     size_t num_entries, grpc_slice_hash_table_entry* entries,
     void (*destroy_value)(grpc_exec_ctx* exec_ctx, void* value),
     int (*value_cmp)(void* a, void* b)) {
-  grpc_slice_hash_table* table = gpr_zalloc(sizeof(*table));
+  grpc_slice_hash_table* table =
+      (grpc_slice_hash_table*)gpr_zalloc(sizeof(*table));
   gpr_ref_init(&table->refs, 1);
   table->destroy_value = destroy_value;
   table->value_cmp = value_cmp;
   // Keep load factor low to improve performance of lookups.
   table->size = num_entries * 2;
   const size_t entry_size = sizeof(grpc_slice_hash_table_entry) * table->size;
-  table->entries = gpr_zalloc(entry_size);
+  table->entries = (grpc_slice_hash_table_entry*)gpr_zalloc(entry_size);
   for (size_t i = 0; i < num_entries; ++i) {
     grpc_slice_hash_table_entry* entry = &entries[i];
     grpc_slice_hash_table_add(table, entry->key, entry->value);
diff --git a/src/core/lib/slice/slice_intern.c b/src/core/lib/slice/slice_intern.c
index a6d22c1e1f..ec71b3ca1d 100644
--- a/src/core/lib/slice/slice_intern.c
+++ b/src/core/lib/slice/slice_intern.c
@@ -69,7 +69,7 @@ static uint32_t max_static_metadata_hash_probe;
 static uint32_t static_metadata_hash_values[GRPC_STATIC_MDSTR_COUNT];
 
 static void interned_slice_ref(void *p) {
-  interned_slice_refcount *s = p;
+  interned_slice_refcount *s = (interned_slice_refcount *)p;
   GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&s->refcnt, 1) > 0);
 }
 
@@ -90,7 +90,7 @@ static void interned_slice_destroy(interned_slice_refcount *s) {
 }
 
 static void interned_slice_unref(grpc_exec_ctx *exec_ctx, void *p) {
-  interned_slice_refcount *s = p;
+  interned_slice_refcount *s = (interned_slice_refcount *)p;
   if (1 == gpr_atm_full_fetch_add(&s->refcnt, -1)) {
     interned_slice_destroy(s);
   }
@@ -129,7 +129,8 @@ static void grow_shard(slice_shard *shard) {
 
   GPR_TIMER_BEGIN("grow_strtab", 0);
 
-  strtab = gpr_zalloc(sizeof(interned_slice_refcount *) * capacity);
+  strtab = (interned_slice_refcount **)gpr_zalloc(
+      sizeof(interned_slice_refcount *) * capacity);
 
   for (i = 0; i < shard->capacity; i++) {
     for (s = shard->strs[i]; s; s = next) {
@@ -242,7 +243,8 @@ grpc_slice grpc_slice_intern(grpc_slice slice) {
 
   /* not found: create a new string */
   /* string data goes after the internal_string header */
-  s = gpr_malloc(sizeof(*s) + GRPC_SLICE_LENGTH(slice));
+  s = (interned_slice_refcount *)gpr_malloc(sizeof(*s) +
+                                            GRPC_SLICE_LENGTH(slice));
   gpr_atm_rel_store(&s->refcnt, 1);
   s->length = GRPC_SLICE_LENGTH(slice);
   s->hash = hash;
@@ -280,7 +282,8 @@ void grpc_slice_intern_init(void) {
     gpr_mu_init(&shard->mu);
     shard->count = 0;
     shard->capacity = INITIAL_SHARD_CAPACITY;
-    shard->strs = gpr_zalloc(sizeof(*shard->strs) * shard->capacity);
+    shard->strs = (interned_slice_refcount **)gpr_zalloc(sizeof(*shard->strs) *
+                                                         shard->capacity);
   }
   for (size_t i = 0; i < GPR_ARRAY_SIZE(static_metadata_hash); i++) {
     static_metadata_hash[i].hash = 0;
diff --git a/src/core/lib/support/block_annotate.h b/src/core/lib/support/block_annotate.h
index 0a2cb45018..8e3ef7df65 100644
--- a/src/core/lib/support/block_annotate.h
+++ b/src/core/lib/support/block_annotate.h
@@ -19,15 +19,37 @@
 #ifndef GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H
 #define GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void gpr_thd_start_blocking_region();
+void gpr_thd_end_blocking_region();
+
+#ifdef __cplusplus
+}
+#endif
+
 /* These annotations identify the beginning and end of regions where
    the code may block for reasons other than synchronization functions.
    These include poll, epoll, and getaddrinfo. */
 
+#ifdef GRPC_SCHEDULING_MARK_BLOCKING_REGION
+#define GRPC_SCHEDULING_START_BLOCKING_REGION \
+  do {                                        \
+    gpr_thd_start_blocking_region();          \
+  } while (0)
+#define GRPC_SCHEDULING_END_BLOCKING_REGION \
+  do {                                      \
+    gpr_thd_end_blocking_region();          \
+  } while (0)
+#else
 #define GRPC_SCHEDULING_START_BLOCKING_REGION \
   do {                                        \
   } while (0)
 #define GRPC_SCHEDULING_END_BLOCKING_REGION \
   do {                                      \
   } while (0)
+#endif
 
 #endif /* GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H */
diff --git a/src/core/lib/support/log_linux.c b/src/core/lib/support/log_linux.c
index 61d2346427..7755018693 100644
--- a/src/core/lib/support/log_linux.c
+++ b/src/core/lib/support/log_linux.c
@@ -57,7 +57,7 @@ void gpr_log(const char *file, int line, gpr_log_severity severity,
 }
 
 void gpr_default_log(gpr_log_func_args *args) {
-  char *final_slash;
+  const char *final_slash;
   char *prefix;
   const char *display_file;
   char time_buffer[64];
diff --git a/src/core/lib/support/string.c b/src/core/lib/support/string.c
index b65009754a..6b172df82f 100644
--- a/src/core/lib/support/string.c
+++ b/src/core/lib/support/string.c
@@ -276,7 +276,7 @@ static void add_string_to_split(const char *beg, const char *end, char ***strs,
 
 void gpr_string_split(const char *input, const char *sep, char ***strs,
                       size_t *nstrs) {
-  char *next;
+  const char *next;
   *strs = NULL;
   *nstrs = 0;
   size_t capstrs = 0;
@@ -298,3 +298,17 @@ void *gpr_memrchr(const void *s, int c, size_t n) {
   }
   return NULL;
 }
+
+bool gpr_is_true(const char *s) {
+  size_t i;
+  if (s == NULL) {
+    return false;
+  }
+  static const char *truthy[] = {"yes", "true", "1"};
+  for (i = 0; i < GPR_ARRAY_SIZE(truthy); i++) {
+    if (0 == gpr_stricmp(s, truthy[i])) {
+      return true;
+    }
+  }
+  return false;
+}
diff --git a/src/core/lib/support/string.h b/src/core/lib/support/string.h
index e11df8439d..5a56fa3a0a 100644
--- a/src/core/lib/support/string.h
+++ b/src/core/lib/support/string.h
@@ -19,6 +19,7 @@
 #ifndef GRPC_CORE_LIB_SUPPORT_STRING_H
 #define GRPC_CORE_LIB_SUPPORT_STRING_H
 
+#include <stdbool.h>
 #include <stddef.h>
 
 #include <grpc/support/port_platform.h>
@@ -106,6 +107,8 @@ int gpr_stricmp(const char *a, const char *b);
 
 void *gpr_memrchr(const void *s, int c, size_t n);
 
+/** Return true if lower(s) equals "true", "yes" or "1", otherwise false. */
+bool gpr_is_true(const char *s);
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/core/lib/surface/alarm.c b/src/core/lib/surface/alarm.c
index 7d60b1de17..7712f560b9 100644
--- a/src/core/lib/surface/alarm.c
+++ b/src/core/lib/surface/alarm.c
@@ -44,7 +44,9 @@ static void alarm_ref(grpc_alarm *alarm) { gpr_ref(&alarm->refs); }
 static void alarm_unref(grpc_alarm *alarm) {
   if (gpr_unref(&alarm->refs)) {
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    GRPC_CQ_INTERNAL_UNREF(&exec_ctx, alarm->cq, "alarm");
+    if (alarm->cq != NULL) {
+      GRPC_CQ_INTERNAL_UNREF(&exec_ctx, alarm->cq, "alarm");
+    }
     grpc_exec_ctx_finish(&exec_ctx);
     gpr_free(alarm);
   }
@@ -78,12 +80,12 @@ static void alarm_unref_dbg(grpc_alarm *alarm, const char *reason,
 
 static void alarm_end_completion(grpc_exec_ctx *exec_ctx, void *arg,
                                  grpc_cq_completion *c) {
-  grpc_alarm *alarm = arg;
+  grpc_alarm *alarm = (grpc_alarm *)arg;
   GRPC_ALARM_UNREF(alarm, "dequeue-end-op");
 }
 
 static void alarm_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  grpc_alarm *alarm = arg;
+  grpc_alarm *alarm = (grpc_alarm *)arg;
 
   /* We are queuing an op on completion queue. This means, the alarm's structure
      cannot be destroyed until the op is dequeued. Adding an extra ref
@@ -93,12 +95,8 @@ static void alarm_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
                  (void *)alarm, &alarm->completion);
 }
 
-grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq, gpr_timespec deadline,
-                              void *tag) {
-  grpc_alarm *alarm = gpr_malloc(sizeof(grpc_alarm));
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
-  gpr_ref_init(&alarm->refs, 1);
+grpc_alarm *grpc_alarm_create(void *reserved) {
+  grpc_alarm *alarm = (grpc_alarm *)gpr_malloc(sizeof(grpc_alarm));
 
 #ifndef NDEBUG
   if (GRPC_TRACER_ON(grpc_trace_alarm_refcount)) {
@@ -106,27 +104,36 @@ grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq, gpr_timespec deadline,
   }
 #endif
 
+  gpr_ref_init(&alarm->refs, 1);
+  grpc_timer_init_unset(&alarm->alarm);
+  alarm->cq = NULL;
+  GRPC_CLOSURE_INIT(&alarm->on_alarm, alarm_cb, alarm,
+                    grpc_schedule_on_exec_ctx);
+  return alarm;
+}
+
+void grpc_alarm_set(grpc_alarm *alarm, grpc_completion_queue *cq,
+                    gpr_timespec deadline, void *tag, void *reserved) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
   GRPC_CQ_INTERNAL_REF(cq, "alarm");
   alarm->cq = cq;
   alarm->tag = tag;
 
   GPR_ASSERT(grpc_cq_begin_op(cq, tag));
-  GRPC_CLOSURE_INIT(&alarm->on_alarm, alarm_cb, alarm,
-                    grpc_schedule_on_exec_ctx);
   grpc_timer_init(&exec_ctx, &alarm->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
                   &alarm->on_alarm, gpr_now(GPR_CLOCK_MONOTONIC));
   grpc_exec_ctx_finish(&exec_ctx);
-  return alarm;
 }
 
-void grpc_alarm_cancel(grpc_alarm *alarm) {
+void grpc_alarm_cancel(grpc_alarm *alarm, void *reserved) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_timer_cancel(&exec_ctx, &alarm->alarm);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
-void grpc_alarm_destroy(grpc_alarm *alarm) {
-  grpc_alarm_cancel(alarm);
+void grpc_alarm_destroy(grpc_alarm *alarm, void *reserved) {
+  grpc_alarm_cancel(alarm, reserved);
   GRPC_ALARM_UNREF(alarm, "alarm_destroy");
 }
diff --git a/src/core/lib/surface/byte_buffer.c b/src/core/lib/surface/byte_buffer.c
index 0bc990d487..7ed550ef87 100644
--- a/src/core/lib/surface/byte_buffer.c
+++ b/src/core/lib/surface/byte_buffer.c
@@ -32,7 +32,8 @@ grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
     grpc_slice *slices, size_t nslices,
     grpc_compression_algorithm compression) {
   size_t i;
-  grpc_byte_buffer *bb = gpr_malloc(sizeof(grpc_byte_buffer));
+  grpc_byte_buffer *bb =
+      (grpc_byte_buffer *)gpr_malloc(sizeof(grpc_byte_buffer));
   bb->type = GRPC_BB_RAW;
   bb->data.raw.compression = compression;
   grpc_slice_buffer_init(&bb->data.raw.slice_buffer);
@@ -45,7 +46,8 @@ grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
 
 grpc_byte_buffer *grpc_raw_byte_buffer_from_reader(
     grpc_byte_buffer_reader *reader) {
-  grpc_byte_buffer *bb = gpr_malloc(sizeof(grpc_byte_buffer));
+  grpc_byte_buffer *bb =
+      (grpc_byte_buffer *)gpr_malloc(sizeof(grpc_byte_buffer));
   grpc_slice slice;
   bb->type = GRPC_BB_RAW;
   bb->data.raw.compression = GRPC_COMPRESS_NONE;
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 00ec9c7c9a..03f47553a1 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -32,6 +32,7 @@
 
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
@@ -121,6 +122,7 @@ typedef struct batch_control {
       bool is_closure;
     } notify_tag;
   } completion_data;
+  grpc_closure start_batch;
   grpc_closure finish_batch;
   gpr_refcount steps_to_complete;
 
@@ -144,15 +146,19 @@ typedef struct {
   grpc_call *sibling_prev;
 } child_call;
 
+#define RECV_NONE ((gpr_atm)0)
+#define RECV_INITIAL_METADATA_FIRST ((gpr_atm)1)
+
 struct grpc_call {
   gpr_refcount ext_ref;
   gpr_arena *arena;
+  grpc_call_combiner call_combiner;
   grpc_completion_queue *cq;
   grpc_polling_entity pollent;
   grpc_channel *channel;
   gpr_timespec start_time;
   /* parent_call* */ gpr_atm parent_call_atm;
-  child_call *child_call;
+  child_call *child;
 
   /* client or server call */
   bool is_client;
@@ -170,9 +176,6 @@ struct grpc_call {
   gpr_atm any_ops_sent_atm;
   gpr_atm received_final_op_atm;
 
-  /* have we received initial metadata */
-  bool has_initial_md_been_received;
-
   batch_control *active_batches[MAX_CONCURRENT_BATCHES];
   grpc_transport_stream_op_batch_payload stream_op_payload;
 
@@ -183,6 +186,11 @@ struct grpc_call {
      Element 0 is initial metadata, element 1 is trailing metadata. */
   grpc_metadata_array *buffered_metadata[2];
 
+  grpc_metadata compression_md;
+
+  // A char* indicating the peer name.
+  gpr_atm peer_string;
+
   /* Packed received call statuses from various sources */
   gpr_atm status[STATUS_SOURCE_COUNT];
 
@@ -192,8 +200,12 @@ struct grpc_call {
 
   /* Compression algorithm for *incoming* data */
   grpc_compression_algorithm incoming_compression_algorithm;
+  /* Stream compression algorithm for *incoming* data */
+  grpc_stream_compression_algorithm incoming_stream_compression_algorithm;
   /* Supported encodings (compression algorithms), a bitset */
   uint32_t encodings_accepted_by_peer;
+  /* Supported stream encodings (stream compression algorithms), a bitset */
+  uint32_t stream_encodings_accepted_by_peer;
 
   /* Contexts for various subsystems (security, tracing, ...). */
   grpc_call_context_element context[GRPC_CONTEXT_COUNT];
@@ -226,7 +238,23 @@ struct grpc_call {
     } server;
   } final_op;
 
-  void *saved_receiving_stream_ready_bctlp;
+  /* recv_state can contain one of the following values:
+     RECV_NONE :                 :  no initial metadata and messages received
+     RECV_INITIAL_METADATA_FIRST :  received initial metadata first
+     a batch_control*            :  received messages first
+
+                 +------1------RECV_NONE------3-----+
+                 |                                  |
+                 |                                  |
+                 v                                  v
+     RECV_INITIAL_METADATA_FIRST        receiving_stream_ready_bctlp
+           |           ^                      |           ^
+           |           |                      |           |
+           +-----2-----+                      +-----4-----+
+
+    For 1, 4: See receiving_initial_metadata_ready() function
+    For 2, 3: See receiving_stream_ready() function */
+  gpr_atm recv_state;
 };
 
 grpc_tracer_flag grpc_call_error_trace =
@@ -241,8 +269,9 @@ grpc_tracer_flag grpc_compression_trace =
 #define CALL_FROM_TOP_ELEM(top_elem) \
   CALL_FROM_CALL_STACK(grpc_call_stack_from_top_element(top_elem))
 
-static void execute_op(grpc_exec_ctx *exec_ctx, grpc_call *call,
-                       grpc_transport_stream_op_batch *op);
+static void execute_batch(grpc_exec_ctx *exec_ctx, grpc_call *call,
+                          grpc_transport_stream_op_batch *op,
+                          grpc_closure *start_batch_closure);
 static void cancel_with_status(grpc_exec_ctx *exec_ctx, grpc_call *c,
                                status_source source, grpc_status_code status,
                                const char *description);
@@ -264,11 +293,11 @@ static void post_batch_completion(grpc_exec_ctx *exec_ctx, batch_control *bctl);
 static void add_batch_error(grpc_exec_ctx *exec_ctx, batch_control *bctl,
                             grpc_error *error, bool has_cancelled);
 
-static void add_init_error(grpc_error **composite, grpc_error *new) {
-  if (new == GRPC_ERROR_NONE) return;
+static void add_init_error(grpc_error **composite, grpc_error *new_err) {
+  if (new_err == GRPC_ERROR_NONE) return;
   if (*composite == GRPC_ERROR_NONE)
     *composite = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Call creation failed");
-  *composite = grpc_error_add_child(*composite, new);
+  *composite = grpc_error_add_child(*composite, new_err);
 }
 
 void *grpc_call_arena_alloc(grpc_call *call, size_t size) {
@@ -278,7 +307,7 @@ void *grpc_call_arena_alloc(grpc_call *call, size_t size) {
 static parent_call *get_or_create_parent_call(grpc_call *call) {
   parent_call *p = (parent_call *)gpr_atm_acq_load(&call->parent_call_atm);
   if (p == NULL) {
-    p = gpr_arena_alloc(call->arena, sizeof(*p));
+    p = (parent_call *)gpr_arena_alloc(call->arena, sizeof(*p));
     gpr_mu_init(&p->child_list_mu);
     if (!gpr_atm_rel_cas(&call->parent_call_atm, (gpr_atm)NULL, (gpr_atm)p)) {
       gpr_mu_destroy(&p->child_list_mu);
@@ -301,12 +330,14 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
       grpc_channel_get_channel_stack(args->channel);
   grpc_call *call;
   GPR_TIMER_BEGIN("grpc_call_create", 0);
-  gpr_arena *arena =
-      gpr_arena_create(grpc_channel_get_call_size_estimate(args->channel));
-  call = gpr_arena_alloc(arena,
-                         sizeof(grpc_call) + channel_stack->call_stack_size);
+  size_t initial_size = grpc_channel_get_call_size_estimate(args->channel);
+  GRPC_STATS_INC_CALL_INITIAL_SIZE(exec_ctx, initial_size);
+  gpr_arena *arena = gpr_arena_create(initial_size);
+  call = (grpc_call *)gpr_arena_alloc(
+      arena, sizeof(grpc_call) + channel_stack->call_stack_size);
   gpr_ref_init(&call->ext_ref, 1);
   call->arena = arena;
+  grpc_call_combiner_init(&call->call_combiner);
   *out_call = call;
   call->channel = args->channel;
   call->cq = args->cq;
@@ -314,6 +345,11 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
   /* Always support no compression */
   GPR_BITSET(&call->encodings_accepted_by_peer, GRPC_COMPRESS_NONE);
   call->is_client = args->server_transport_data == NULL;
+  if (call->is_client) {
+    GRPC_STATS_INC_CLIENT_CALLS_CREATED(exec_ctx);
+  } else {
+    GRPC_STATS_INC_SERVER_CALLS_CREATED(exec_ctx);
+  }
   call->stream_op_payload.context = call->context;
   grpc_slice path = grpc_empty_slice();
   if (call->is_client) {
@@ -342,24 +378,24 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
 
   bool immediately_cancel = false;
 
-  if (args->parent_call != NULL) {
-    child_call *cc = call->child_call =
-        gpr_arena_alloc(arena, sizeof(child_call));
-    call->child_call->parent = args->parent_call;
+  if (args->parent != NULL) {
+    child_call *cc = call->child =
+        (child_call *)gpr_arena_alloc(arena, sizeof(child_call));
+    call->child->parent = args->parent;
 
-    GRPC_CALL_INTERNAL_REF(args->parent_call, "child");
+    GRPC_CALL_INTERNAL_REF(args->parent, "child");
     GPR_ASSERT(call->is_client);
-    GPR_ASSERT(!args->parent_call->is_client);
+    GPR_ASSERT(!args->parent->is_client);
 
-    parent_call *pc = get_or_create_parent_call(args->parent_call);
+    parent_call *pc = get_or_create_parent_call(args->parent);
 
     gpr_mu_lock(&pc->child_list_mu);
 
     if (args->propagation_mask & GRPC_PROPAGATE_DEADLINE) {
       send_deadline = gpr_time_min(
           gpr_convert_clock_type(send_deadline,
-                                 args->parent_call->send_deadline.clock_type),
-          args->parent_call->send_deadline);
+                                 args->parent->send_deadline.clock_type),
+          args->parent->send_deadline);
     }
     /* for now GRPC_PROPAGATE_TRACING_CONTEXT *MUST* be passed with
      * GRPC_PROPAGATE_STATS_CONTEXT */
@@ -371,9 +407,9 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
                                    "Census tracing propagation requested "
                                    "without Census context propagation"));
       }
-      grpc_call_context_set(
-          call, GRPC_CONTEXT_TRACING,
-          args->parent_call->context[GRPC_CONTEXT_TRACING].value, NULL);
+      grpc_call_context_set(call, GRPC_CONTEXT_TRACING,
+                            args->parent->context[GRPC_CONTEXT_TRACING].value,
+                            NULL);
     } else if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT) {
       add_init_error(&error, GRPC_ERROR_CREATE_FROM_STATIC_STRING(
                                  "Census context propagation requested "
@@ -381,7 +417,7 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
     }
     if (args->propagation_mask & GRPC_PROPAGATE_CANCELLATION) {
       call->cancellation_is_inherited = 1;
-      if (gpr_atm_acq_load(&args->parent_call->received_final_op_atm)) {
+      if (gpr_atm_acq_load(&args->parent->received_final_op_atm)) {
         immediately_cancel = true;
       }
     }
@@ -391,9 +427,9 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
       cc->sibling_next = cc->sibling_prev = call;
     } else {
       cc->sibling_next = pc->first_child;
-      cc->sibling_prev = pc->first_child->child_call->sibling_prev;
-      cc->sibling_next->child_call->sibling_prev =
-          cc->sibling_prev->child_call->sibling_next = call;
+      cc->sibling_prev = pc->first_child->child->sibling_prev;
+      cc->sibling_next->child->sibling_prev =
+          cc->sibling_prev->child->sibling_next = call;
     }
 
     gpr_mu_unlock(&pc->child_list_mu);
@@ -410,7 +446,8 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
       .path = path,
       .start_time = call->start_time,
       .deadline = send_deadline,
-      .arena = call->arena};
+      .arena = call->arena,
+      .call_combiner = &call->call_combiner};
   add_init_error(&error, grpc_call_stack_init(exec_ctx, channel_stack, 1,
                                               destroy_call, call, &call_args));
   if (error != GRPC_ERROR_NONE) {
@@ -475,8 +512,10 @@ void grpc_call_internal_unref(grpc_exec_ctx *exec_ctx, grpc_call *c REF_ARG) {
 
 static void release_call(grpc_exec_ctx *exec_ctx, void *call,
                          grpc_error *error) {
-  grpc_call *c = call;
+  grpc_call *c = (grpc_call *)call;
   grpc_channel *channel = c->channel;
+  grpc_call_combiner_destroy(&c->call_combiner);
+  gpr_free((char *)c->peer_string);
   grpc_channel_update_call_size_estimate(channel, gpr_arena_destroy(c->arena));
   GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel, "call");
 }
@@ -486,7 +525,7 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
                          grpc_error *error) {
   size_t i;
   int ii;
-  grpc_call *c = call;
+  grpc_call *c = (grpc_call *)call;
   GPR_TIMER_BEGIN("destroy_call", 0);
   for (i = 0; i < 2; i++) {
     grpc_metadata_batch_destroy(
@@ -511,7 +550,7 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
     GRPC_CQ_INTERNAL_UNREF(exec_ctx, c->cq, "bind");
   }
 
-  get_final_status(call, set_status_value_directly, &c->final_info.final_status,
+  get_final_status(c, set_status_value_directly, &c->final_info.final_status,
                    NULL);
   c->final_info.stats.latency =
       gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), c->start_time);
@@ -532,7 +571,7 @@ void grpc_call_ref(grpc_call *c) { gpr_ref(&c->ext_ref); }
 void grpc_call_unref(grpc_call *c) {
   if (!gpr_unref(&c->ext_ref)) return;
 
-  child_call *cc = c->child_call;
+  child_call *cc = c->child;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   GPR_TIMER_BEGIN("grpc_call_unref", 0);
@@ -547,8 +586,8 @@ void grpc_call_unref(grpc_call *c) {
         pc->first_child = NULL;
       }
     }
-    cc->sibling_prev->child_call->sibling_next = cc->sibling_next;
-    cc->sibling_next->child_call->sibling_prev = cc->sibling_prev;
+    cc->sibling_prev->child->sibling_next = cc->sibling_next;
+    cc->sibling_next->child->sibling_prev = cc->sibling_prev;
     gpr_mu_unlock(&pc->child_list_mu);
     GRPC_CALL_INTERNAL_UNREF(&exec_ctx, cc->parent, "child");
   }
@@ -560,6 +599,12 @@ void grpc_call_unref(grpc_call *c) {
   if (cancel) {
     cancel_with_error(&exec_ctx, c, STATUS_FROM_API_OVERRIDE,
                       GRPC_ERROR_CANCELLED);
+  } else {
+    // Unset the call combiner cancellation closure.  This has the
+    // effect of scheduling the previously set cancellation closure, if
+    // any, so that it can release any internal references it may be
+    // holding to the call stack.
+    grpc_call_combiner_set_notify_on_cancel(&exec_ctx, &c->call_combiner, NULL);
   }
   GRPC_CALL_INTERNAL_UNREF(&exec_ctx, c, "destroy");
   grpc_exec_ctx_finish(&exec_ctx);
@@ -576,30 +621,37 @@ grpc_call_error grpc_call_cancel(grpc_call *call, void *reserved) {
   return GRPC_CALL_OK;
 }
 
-static void execute_op(grpc_exec_ctx *exec_ctx, grpc_call *call,
-                       grpc_transport_stream_op_batch *op) {
-  grpc_call_element *elem;
-
-  GPR_TIMER_BEGIN("execute_op", 0);
-  elem = CALL_ELEM_FROM_CALL(call, 0);
-  elem->filter->start_transport_stream_op_batch(exec_ctx, elem, op);
-  GPR_TIMER_END("execute_op", 0);
+// This is called via the call combiner to start sending a batch down
+// the filter stack.
+static void execute_batch_in_call_combiner(grpc_exec_ctx *exec_ctx, void *arg,
+                                           grpc_error *ignored) {
+  grpc_transport_stream_op_batch *batch = (grpc_transport_stream_op_batch *)arg;
+  grpc_call *call = (grpc_call *)batch->handler_private.extra_arg;
+  GPR_TIMER_BEGIN("execute_batch", 0);
+  grpc_call_element *elem = CALL_ELEM_FROM_CALL(call, 0);
+  GRPC_CALL_LOG_OP(GPR_INFO, elem, batch);
+  elem->filter->start_transport_stream_op_batch(exec_ctx, elem, batch);
+  GPR_TIMER_END("execute_batch", 0);
+}
+
+// start_batch_closure points to a caller-allocated closure to be used
+// for entering the call combiner.
+static void execute_batch(grpc_exec_ctx *exec_ctx, grpc_call *call,
+                          grpc_transport_stream_op_batch *batch,
+                          grpc_closure *start_batch_closure) {
+  batch->handler_private.extra_arg = call;
+  GRPC_CLOSURE_INIT(start_batch_closure, execute_batch_in_call_combiner, batch,
+                    grpc_schedule_on_exec_ctx);
+  GRPC_CALL_COMBINER_START(exec_ctx, &call->call_combiner, start_batch_closure,
+                           GRPC_ERROR_NONE, "executing batch");
 }
 
 char *grpc_call_get_peer(grpc_call *call) {
-  grpc_call_element *elem = CALL_ELEM_FROM_CALL(call, 0);
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  char *result;
-  GRPC_API_TRACE("grpc_call_get_peer(%p)", 1, (call));
-  result = elem->filter->get_peer(&exec_ctx, elem);
-  if (result == NULL) {
-    result = grpc_channel_get_target(call->channel);
-  }
-  if (result == NULL) {
-    result = gpr_strdup("unknown");
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-  return result;
+  char *peer_string = (char *)gpr_atm_acq_load(&call->peer_string);
+  if (peer_string != NULL) return gpr_strdup(peer_string);
+  peer_string = grpc_channel_get_target(call->channel);
+  if (peer_string != NULL) return peer_string;
+  return gpr_strdup("unknown");
 }
 
 grpc_call *grpc_call_from_top_element(grpc_call_element *elem) {
@@ -626,20 +678,41 @@ grpc_call_error grpc_call_cancel_with_status(grpc_call *c,
   return GRPC_CALL_OK;
 }
 
-static void done_termination(grpc_exec_ctx *exec_ctx, void *call,
+typedef struct {
+  grpc_call *call;
+  grpc_closure start_batch;
+  grpc_closure finish_batch;
+} cancel_state;
+
+// The on_complete callback used when sending a cancel_stream batch down
+// the filter stack.  Yields the call combiner when the batch is done.
+static void done_termination(grpc_exec_ctx *exec_ctx, void *arg,
                              grpc_error *error) {
-  GRPC_CALL_INTERNAL_UNREF(exec_ctx, call, "termination");
+  cancel_state *state = (cancel_state *)arg;
+  GRPC_CALL_COMBINER_STOP(exec_ctx, &state->call->call_combiner,
+                          "on_complete for cancel_stream op");
+  GRPC_CALL_INTERNAL_UNREF(exec_ctx, state->call, "termination");
+  gpr_free(state);
 }
 
 static void cancel_with_error(grpc_exec_ctx *exec_ctx, grpc_call *c,
                               status_source source, grpc_error *error) {
   GRPC_CALL_INTERNAL_REF(c, "termination");
+  // Inform the call combiner of the cancellation, so that it can cancel
+  // any in-flight asynchronous actions that may be holding the call
+  // combiner.  This ensures that the cancel_stream batch can be sent
+  // down the filter stack in a timely manner.
+  grpc_call_combiner_cancel(exec_ctx, &c->call_combiner, GRPC_ERROR_REF(error));
   set_status_from_error(exec_ctx, c, source, GRPC_ERROR_REF(error));
-  grpc_transport_stream_op_batch *op = grpc_make_transport_stream_op(
-      GRPC_CLOSURE_CREATE(done_termination, c, grpc_schedule_on_exec_ctx));
+  cancel_state *state = (cancel_state *)gpr_malloc(sizeof(*state));
+  state->call = c;
+  GRPC_CLOSURE_INIT(&state->finish_batch, done_termination, state,
+                    grpc_schedule_on_exec_ctx);
+  grpc_transport_stream_op_batch *op =
+      grpc_make_transport_stream_op(&state->finish_batch);
   op->cancel_stream = true;
   op->payload->cancel_stream.cancel_error = error;
-  execute_op(exec_ctx, c, op);
+  execute_batch(exec_ctx, c, op, &state->start_batch);
 }
 
 static grpc_error *error_from_status(grpc_status_code status,
@@ -752,6 +825,12 @@ static void set_incoming_compression_algorithm(
   call->incoming_compression_algorithm = algo;
 }
 
+static void set_incoming_stream_compression_algorithm(
+    grpc_call *call, grpc_stream_compression_algorithm algo) {
+  GPR_ASSERT(algo < GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT);
+  call->incoming_stream_compression_algorithm = algo;
+}
+
 grpc_compression_algorithm grpc_call_test_only_get_compression_algorithm(
     grpc_call *call) {
   grpc_compression_algorithm algorithm;
@@ -765,6 +844,13 @@ static grpc_compression_algorithm compression_algorithm_for_level_locked(
                                               call->encodings_accepted_by_peer);
 }
 
+static grpc_stream_compression_algorithm
+stream_compression_algorithm_for_level_locked(
+    grpc_call *call, grpc_stream_compression_level level) {
+  return grpc_stream_compression_algorithm_for_level(
+      level, call->stream_encodings_accepted_by_peer);
+}
+
 uint32_t grpc_call_test_only_get_message_flags(grpc_call *call) {
   uint32_t flags;
   flags = call->test_only_last_message_flags;
@@ -819,12 +905,70 @@ static void set_encodings_accepted_by_peer(grpc_exec_ctx *exec_ctx,
       (void *)(((uintptr_t)call->encodings_accepted_by_peer) + 1));
 }
 
+static void set_stream_encodings_accepted_by_peer(grpc_exec_ctx *exec_ctx,
+                                                  grpc_call *call,
+                                                  grpc_mdelem mdel) {
+  size_t i;
+  grpc_stream_compression_algorithm algorithm;
+  grpc_slice_buffer accept_encoding_parts;
+  grpc_slice accept_encoding_slice;
+  void *accepted_user_data;
+
+  accepted_user_data =
+      grpc_mdelem_get_user_data(mdel, destroy_encodings_accepted_by_peer);
+  if (accepted_user_data != NULL) {
+    call->stream_encodings_accepted_by_peer =
+        (uint32_t)(((uintptr_t)accepted_user_data) - 1);
+    return;
+  }
+
+  accept_encoding_slice = GRPC_MDVALUE(mdel);
+  grpc_slice_buffer_init(&accept_encoding_parts);
+  grpc_slice_split(accept_encoding_slice, ",", &accept_encoding_parts);
+
+  /* Always support no compression */
+  GPR_BITSET(&call->stream_encodings_accepted_by_peer,
+             GRPC_STREAM_COMPRESS_NONE);
+  for (i = 0; i < accept_encoding_parts.count; i++) {
+    grpc_slice accept_encoding_entry_slice = accept_encoding_parts.slices[i];
+    if (grpc_stream_compression_algorithm_parse(accept_encoding_entry_slice,
+                                                &algorithm)) {
+      GPR_BITSET(&call->stream_encodings_accepted_by_peer, algorithm);
+    } else {
+      char *accept_encoding_entry_str =
+          grpc_slice_to_c_string(accept_encoding_entry_slice);
+      gpr_log(GPR_ERROR,
+              "Invalid entry in accept encoding metadata: '%s'. Ignoring.",
+              accept_encoding_entry_str);
+      gpr_free(accept_encoding_entry_str);
+    }
+  }
+
+  grpc_slice_buffer_destroy_internal(exec_ctx, &accept_encoding_parts);
+
+  grpc_mdelem_set_user_data(
+      mdel, destroy_encodings_accepted_by_peer,
+      (void *)(((uintptr_t)call->stream_encodings_accepted_by_peer) + 1));
+}
+
 uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call *call) {
   uint32_t encodings_accepted_by_peer;
   encodings_accepted_by_peer = call->encodings_accepted_by_peer;
   return encodings_accepted_by_peer;
 }
 
+uint32_t grpc_call_test_only_get_stream_encodings_accepted_by_peer(
+    grpc_call *call) {
+  uint32_t stream_encodings_accepted_by_peer;
+  stream_encodings_accepted_by_peer = call->stream_encodings_accepted_by_peer;
+  return stream_encodings_accepted_by_peer;
+}
+
+grpc_stream_compression_algorithm
+grpc_call_test_only_get_incoming_stream_encodings(grpc_call *call) {
+  return call->incoming_stream_compression_algorithm;
+}
+
 static grpc_linked_mdelem *linked_from_md(const grpc_metadata *md) {
   return (grpc_linked_mdelem *)&md->internal_data;
 }
@@ -936,6 +1080,22 @@ static grpc_compression_algorithm decode_compression(grpc_mdelem md) {
   return algorithm;
 }
 
+static grpc_stream_compression_algorithm decode_stream_compression(
+    grpc_mdelem md) {
+  grpc_stream_compression_algorithm algorithm =
+      grpc_stream_compression_algorithm_from_slice(GRPC_MDVALUE(md));
+  if (algorithm == GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) {
+    char *md_c_str = grpc_slice_to_c_string(GRPC_MDVALUE(md));
+    gpr_log(GPR_ERROR,
+            "Invalid incoming stream compression algorithm: '%s'. Interpreting "
+            "incoming data as uncompressed.",
+            md_c_str);
+    gpr_free(md_c_str);
+    return GRPC_STREAM_COMPRESS_NONE;
+  }
+  return algorithm;
+}
+
 static void publish_app_metadata(grpc_call *call, grpc_metadata_batch *b,
                                  int is_trailing) {
   if (b->list.count == 0) return;
@@ -946,8 +1106,8 @@ static void publish_app_metadata(grpc_call *call, grpc_metadata_batch *b,
   if (dest->count + b->list.count > dest->capacity) {
     dest->capacity =
         GPR_MAX(dest->capacity + b->list.count, dest->capacity * 3 / 2);
-    dest->metadata =
-        gpr_realloc(dest->metadata, sizeof(grpc_metadata) * dest->capacity);
+    dest->metadata = (grpc_metadata *)gpr_realloc(
+        dest->metadata, sizeof(grpc_metadata) * dest->capacity);
   }
   for (grpc_linked_mdelem *l = b->list.head; l != NULL; l = l->next) {
     mdusr = &dest->metadata[dest->count++];
@@ -960,7 +1120,19 @@ static void publish_app_metadata(grpc_call *call, grpc_metadata_batch *b,
 
 static void recv_initial_filter(grpc_exec_ctx *exec_ctx, grpc_call *call,
                                 grpc_metadata_batch *b) {
-  if (b->idx.named.grpc_encoding != NULL) {
+  if (b->idx.named.content_encoding != NULL) {
+    if (b->idx.named.grpc_encoding != NULL) {
+      gpr_log(GPR_ERROR,
+              "Received both content-encoding and grpc-encoding header. "
+              "Ignoring grpc-encoding.");
+      grpc_metadata_batch_remove(exec_ctx, b, b->idx.named.grpc_encoding);
+    }
+    GPR_TIMER_BEGIN("incoming_stream_compression_algorithm", 0);
+    set_incoming_stream_compression_algorithm(
+        call, decode_stream_compression(b->idx.named.content_encoding->md));
+    GPR_TIMER_END("incoming_stream_compression_algorithm", 0);
+    grpc_metadata_batch_remove(exec_ctx, b, b->idx.named.content_encoding);
+  } else if (b->idx.named.grpc_encoding != NULL) {
     GPR_TIMER_BEGIN("incoming_compression_algorithm", 0);
     set_incoming_compression_algorithm(
         call, decode_compression(b->idx.named.grpc_encoding->md));
@@ -974,12 +1146,19 @@ static void recv_initial_filter(grpc_exec_ctx *exec_ctx, grpc_call *call,
     grpc_metadata_batch_remove(exec_ctx, b, b->idx.named.grpc_accept_encoding);
     GPR_TIMER_END("encodings_accepted_by_peer", 0);
   }
+  if (b->idx.named.accept_encoding != NULL) {
+    GPR_TIMER_BEGIN("stream_encodings_accepted_by_peer", 0);
+    set_stream_encodings_accepted_by_peer(exec_ctx, call,
+                                          b->idx.named.accept_encoding->md);
+    grpc_metadata_batch_remove(exec_ctx, b, b->idx.named.accept_encoding);
+    GPR_TIMER_END("stream_encodings_accepted_by_peer", 0);
+  }
   publish_app_metadata(call, b, false);
 }
 
 static void recv_trailing_filter(grpc_exec_ctx *exec_ctx, void *args,
                                  grpc_metadata_batch *b) {
-  grpc_call *call = args;
+  grpc_call *call = (grpc_call *)args;
   if (b->idx.named.grpc_status != NULL) {
     uint32_t status_code = decode_status(b->idx.named.grpc_status->md);
     grpc_error *error =
@@ -1063,7 +1242,8 @@ static batch_control *allocate_batch_control(grpc_call *call,
   int slot = batch_slot_for_op(ops[0].op);
   batch_control **pslot = &call->active_batches[slot];
   if (*pslot == NULL) {
-    *pslot = gpr_arena_alloc(call->arena, sizeof(batch_control));
+    *pslot =
+        (batch_control *)gpr_arena_alloc(call->arena, sizeof(batch_control));
   }
   batch_control *bctl = *pslot;
   if (bctl->call != NULL) {
@@ -1077,7 +1257,7 @@ static batch_control *allocate_batch_control(grpc_call *call,
 
 static void finish_batch_completion(grpc_exec_ctx *exec_ctx, void *user_data,
                                     grpc_cq_completion *storage) {
-  batch_control *bctl = user_data;
+  batch_control *bctl = (batch_control *)user_data;
   grpc_call *call = bctl->call;
   bctl->call = NULL;
   GRPC_CALL_INTERNAL_UNREF(exec_ctx, call, "completion");
@@ -1137,7 +1317,7 @@ static void post_batch_completion(grpc_exec_ctx *exec_ctx,
       child = pc->first_child;
       if (child != NULL) {
         do {
-          next_child_call = child->child_call->sibling_next;
+          next_child_call = child->child->sibling_next;
           if (child->cancellation_is_inherited) {
             GRPC_CALL_INTERNAL_REF(child, "propagate_cancel");
             cancel_with_error(exec_ctx, child, STATUS_FROM_API_OVERRIDE,
@@ -1166,7 +1346,8 @@ static void post_batch_completion(grpc_exec_ctx *exec_ctx,
   if (bctl->completion_data.notify_tag.is_closure) {
     /* unrefs bctl->error */
     bctl->call = NULL;
-    GRPC_CLOSURE_RUN(exec_ctx, bctl->completion_data.notify_tag.tag, error);
+    GRPC_CLOSURE_RUN(
+        exec_ctx, (grpc_closure *)bctl->completion_data.notify_tag.tag, error);
     GRPC_CALL_INTERNAL_UNREF(exec_ctx, call, "completion");
   } else {
     /* unrefs bctl->error */
@@ -1220,7 +1401,7 @@ static void continue_receiving_slices(grpc_exec_ctx *exec_ctx,
 
 static void receiving_slice_ready(grpc_exec_ctx *exec_ctx, void *bctlp,
                                   grpc_error *error) {
-  batch_control *bctl = bctlp;
+  batch_control *bctl = (batch_control *)bctlp;
   grpc_call *call = bctl->call;
   grpc_byte_stream *bs = call->receiving_stream;
   bool release_error = false;
@@ -1279,7 +1460,7 @@ static void process_data_after_md(grpc_exec_ctx *exec_ctx,
 
 static void receiving_stream_ready(grpc_exec_ctx *exec_ctx, void *bctlp,
                                    grpc_error *error) {
-  batch_control *bctl = bctlp;
+  batch_control *bctl = (batch_control *)bctlp;
   grpc_call *call = bctl->call;
   if (error != GRPC_ERROR_NONE) {
     if (call->receiving_stream != NULL) {
@@ -1290,19 +1471,73 @@ static void receiving_stream_ready(grpc_exec_ctx *exec_ctx, void *bctlp,
     cancel_with_error(exec_ctx, call, STATUS_FROM_SURFACE,
                       GRPC_ERROR_REF(error));
   }
-  if (call->has_initial_md_been_received || error != GRPC_ERROR_NONE ||
-      call->receiving_stream == NULL) {
-    process_data_after_md(exec_ctx, bctlp);
-  } else {
-    call->saved_receiving_stream_ready_bctlp = bctlp;
+  /* If recv_state is RECV_NONE, we will save the batch_control
+   * object with rel_cas, and will not use it after the cas. Its corresponding
+   * acq_load is in receiving_initial_metadata_ready() */
+  if (error != GRPC_ERROR_NONE || call->receiving_stream == NULL ||
+      !gpr_atm_rel_cas(&call->recv_state, RECV_NONE, (gpr_atm)bctlp)) {
+    process_data_after_md(exec_ctx, bctl);
   }
 }
 
+// The recv_message_ready callback used when sending a batch containing
+// a recv_message op down the filter stack.  Yields the call combiner
+// before processing the received message.
+static void receiving_stream_ready_in_call_combiner(grpc_exec_ctx *exec_ctx,
+                                                    void *bctlp,
+                                                    grpc_error *error) {
+  batch_control *bctl = (batch_control *)bctlp;
+  grpc_call *call = bctl->call;
+  GRPC_CALL_COMBINER_STOP(exec_ctx, &call->call_combiner, "recv_message_ready");
+  receiving_stream_ready(exec_ctx, bctlp, error);
+}
+
 static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx,
                                        batch_control *bctl) {
   grpc_call *call = bctl->call;
-  /* validate call->incoming_compression_algorithm */
-  if (call->incoming_compression_algorithm != GRPC_COMPRESS_NONE) {
+  /* validate compression algorithms */
+  if (call->incoming_stream_compression_algorithm !=
+      GRPC_STREAM_COMPRESS_NONE) {
+    const grpc_stream_compression_algorithm algo =
+        call->incoming_stream_compression_algorithm;
+    char *error_msg = NULL;
+    const grpc_compression_options compression_options =
+        grpc_channel_compression_options(call->channel);
+    if (algo >= GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) {
+      gpr_asprintf(&error_msg,
+                   "Invalid stream compression algorithm value '%d'.", algo);
+      gpr_log(GPR_ERROR, "%s", error_msg);
+      cancel_with_status(exec_ctx, call, STATUS_FROM_SURFACE,
+                         GRPC_STATUS_UNIMPLEMENTED, error_msg);
+    } else if (grpc_compression_options_is_stream_compression_algorithm_enabled(
+                   &compression_options, algo) == 0) {
+      /* check if algorithm is supported by current channel config */
+      const char *algo_name = NULL;
+      grpc_stream_compression_algorithm_name(algo, &algo_name);
+      gpr_asprintf(&error_msg, "Stream compression algorithm '%s' is disabled.",
+                   algo_name);
+      gpr_log(GPR_ERROR, "%s", error_msg);
+      cancel_with_status(exec_ctx, call, STATUS_FROM_SURFACE,
+                         GRPC_STATUS_UNIMPLEMENTED, error_msg);
+    }
+    gpr_free(error_msg);
+
+    GPR_ASSERT(call->stream_encodings_accepted_by_peer != 0);
+    if (!GPR_BITGET(call->stream_encodings_accepted_by_peer,
+                    call->incoming_stream_compression_algorithm)) {
+      if (GRPC_TRACER_ON(grpc_compression_trace)) {
+        const char *algo_name = NULL;
+        grpc_stream_compression_algorithm_name(
+            call->incoming_stream_compression_algorithm, &algo_name);
+        gpr_log(
+            GPR_ERROR,
+            "Stream compression algorithm (content-encoding = '%s') not "
+            "present in the bitset of accepted encodings (accept-encodings: "
+            "'0x%x')",
+            algo_name, call->stream_encodings_accepted_by_peer);
+      }
+    }
+  } else if (call->incoming_compression_algorithm != GRPC_COMPRESS_NONE) {
     const grpc_compression_algorithm algo =
         call->incoming_compression_algorithm;
     char *error_msg = NULL;
@@ -1318,7 +1553,7 @@ static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx,
     } else if (grpc_compression_options_is_algorithm_enabled(
                    &compression_options, algo) == 0) {
       /* check if algorithm is supported by current channel config */
-      char *algo_name = NULL;
+      const char *algo_name = NULL;
       grpc_compression_algorithm_name(algo, &algo_name);
       gpr_asprintf(&error_msg, "Compression algorithm '%s' is disabled.",
                    algo_name);
@@ -1329,22 +1564,20 @@ static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx,
       call->incoming_compression_algorithm = algo;
     }
     gpr_free(error_msg);
-  }
 
-  /* make sure the received grpc-encoding is amongst the ones listed in
-   * grpc-accept-encoding */
-  GPR_ASSERT(call->encodings_accepted_by_peer != 0);
-  if (!GPR_BITGET(call->encodings_accepted_by_peer,
-                  call->incoming_compression_algorithm)) {
-    if (GRPC_TRACER_ON(grpc_compression_trace)) {
-      char *algo_name = NULL;
-      grpc_compression_algorithm_name(call->incoming_compression_algorithm,
-                                      &algo_name);
-      gpr_log(GPR_ERROR,
-              "Compression algorithm (grpc-encoding = '%s') not present in "
-              "the bitset of accepted encodings (grpc-accept-encodings: "
-              "'0x%x')",
-              algo_name, call->encodings_accepted_by_peer);
+    GPR_ASSERT(call->encodings_accepted_by_peer != 0);
+    if (!GPR_BITGET(call->encodings_accepted_by_peer,
+                    call->incoming_compression_algorithm)) {
+      if (GRPC_TRACER_ON(grpc_compression_trace)) {
+        const char *algo_name = NULL;
+        grpc_compression_algorithm_name(call->incoming_compression_algorithm,
+                                        &algo_name);
+        gpr_log(GPR_ERROR,
+                "Compression algorithm (grpc-encoding = '%s') not present in "
+                "the bitset of accepted encodings (grpc-accept-encodings: "
+                "'0x%x')",
+                algo_name, call->encodings_accepted_by_peer);
+      }
     }
   }
 }
@@ -1362,9 +1595,12 @@ static void add_batch_error(grpc_exec_ctx *exec_ctx, batch_control *bctl,
 
 static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
                                              void *bctlp, grpc_error *error) {
-  batch_control *bctl = bctlp;
+  batch_control *bctl = (batch_control *)bctlp;
   grpc_call *call = bctl->call;
 
+  GRPC_CALL_COMBINER_STOP(exec_ctx, &call->call_combiner,
+                          "recv_initial_metadata_ready");
+
   add_batch_error(exec_ctx, bctl, GRPC_ERROR_REF(error), false);
   if (error == GRPC_ERROR_NONE) {
     grpc_metadata_batch *md =
@@ -1384,12 +1620,31 @@ static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
     }
   }
 
-  call->has_initial_md_been_received = true;
-  if (call->saved_receiving_stream_ready_bctlp != NULL) {
-    grpc_closure *saved_rsr_closure = GRPC_CLOSURE_CREATE(
-        receiving_stream_ready, call->saved_receiving_stream_ready_bctlp,
-        grpc_schedule_on_exec_ctx);
-    call->saved_receiving_stream_ready_bctlp = NULL;
+  grpc_closure *saved_rsr_closure = NULL;
+  while (true) {
+    gpr_atm rsr_bctlp = gpr_atm_acq_load(&call->recv_state);
+    /* Should only receive initial metadata once */
+    GPR_ASSERT(rsr_bctlp != 1);
+    if (rsr_bctlp == 0) {
+      /* We haven't seen initial metadata and messages before, thus initial
+       * metadata is received first.
+       * no_barrier_cas is used, as this function won't access the batch_control
+       * object saved by receiving_stream_ready() if the initial metadata is
+       * received first. */
+      if (gpr_atm_no_barrier_cas(&call->recv_state, RECV_NONE,
+                                 RECV_INITIAL_METADATA_FIRST)) {
+        break;
+      }
+    } else {
+      /* Already received messages */
+      saved_rsr_closure = GRPC_CLOSURE_CREATE(receiving_stream_ready,
+                                              (batch_control *)rsr_bctlp,
+                                              grpc_schedule_on_exec_ctx);
+      /* No need to modify recv_state */
+      break;
+    }
+  }
+  if (saved_rsr_closure != NULL) {
     GRPC_CLOSURE_RUN(exec_ctx, saved_rsr_closure, GRPC_ERROR_REF(error));
   }
 
@@ -1398,8 +1653,9 @@ static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx,
 
 static void finish_batch(grpc_exec_ctx *exec_ctx, void *bctlp,
                          grpc_error *error) {
-  batch_control *bctl = bctlp;
-
+  batch_control *bctl = (batch_control *)bctlp;
+  grpc_call *call = bctl->call;
+  GRPC_CALL_COMBINER_STOP(exec_ctx, &call->call_combiner, "on_complete");
   add_batch_error(exec_ctx, bctl, GRPC_ERROR_REF(error), false);
   finish_batch_step(exec_ctx, bctl);
 }
@@ -1418,9 +1674,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
   batch_control *bctl;
   int num_completion_callbacks_needed = 1;
   grpc_call_error error = GRPC_CALL_OK;
-
-  // sent_initial_metadata guards against variable reuse.
-  grpc_metadata compression_md;
+  grpc_transport_stream_op_batch *stream_op;
+  grpc_transport_stream_op_batch_payload *stream_op_payload;
 
   GPR_TIMER_BEGIN("grpc_call_start_batch", 0);
   GRPC_CALL_LOG_BATCH(GPR_INFO, call, ops, nops, notify_tag);
@@ -1428,11 +1683,12 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
   if (nops == 0) {
     if (!is_notify_tag_closure) {
       GPR_ASSERT(grpc_cq_begin_op(call->cq, notify_tag));
-      grpc_cq_end_op(exec_ctx, call->cq, notify_tag, GRPC_ERROR_NONE,
-                     free_no_op_completion, NULL,
-                     gpr_malloc(sizeof(grpc_cq_completion)));
+      grpc_cq_end_op(
+          exec_ctx, call->cq, notify_tag, GRPC_ERROR_NONE,
+          free_no_op_completion, NULL,
+          (grpc_cq_completion *)gpr_malloc(sizeof(grpc_cq_completion)));
     } else {
-      GRPC_CLOSURE_SCHED(exec_ctx, notify_tag, GRPC_ERROR_NONE);
+      GRPC_CLOSURE_SCHED(exec_ctx, (grpc_closure *)notify_tag, GRPC_ERROR_NONE);
     }
     error = GRPC_CALL_OK;
     goto done;
@@ -1446,9 +1702,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
   bctl->completion_data.notify_tag.is_closure =
       (uint8_t)(is_notify_tag_closure != 0);
 
-  grpc_transport_stream_op_batch *stream_op = &bctl->op;
-  grpc_transport_stream_op_batch_payload *stream_op_payload =
-      &call->stream_op_payload;
+  stream_op = &bctl->op;
+  stream_op_payload = &call->stream_op_payload;
 
   /* rewrite batch ops into a transport op */
   for (i = 0; i < nops; i++) {
@@ -1458,7 +1713,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
       goto done_with_error;
     }
     switch (op->op) {
-      case GRPC_OP_SEND_INITIAL_METADATA:
+      case GRPC_OP_SEND_INITIAL_METADATA: {
         /* Flag validation: currently allow no flags */
         if (!are_initial_metadata_flags_valid(op->flags, call->is_client)) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1469,31 +1724,60 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
           goto done_with_error;
         }
         /* process compression level */
-        memset(&compression_md, 0, sizeof(compression_md));
+        memset(&call->compression_md, 0, sizeof(call->compression_md));
         size_t additional_metadata_count = 0;
-        grpc_compression_level effective_compression_level;
+        grpc_compression_level effective_compression_level =
+            GRPC_COMPRESS_LEVEL_NONE;
+        grpc_stream_compression_level effective_stream_compression_level =
+            GRPC_STREAM_COMPRESS_LEVEL_NONE;
         bool level_set = false;
-        if (op->data.send_initial_metadata.maybe_compression_level.is_set) {
+        bool stream_compression = false;
+        if (op->data.send_initial_metadata.maybe_stream_compression_level
+                .is_set) {
+          effective_stream_compression_level =
+              op->data.send_initial_metadata.maybe_stream_compression_level
+                  .level;
+          level_set = true;
+          stream_compression = true;
+        } else if (op->data.send_initial_metadata.maybe_compression_level
+                       .is_set) {
           effective_compression_level =
               op->data.send_initial_metadata.maybe_compression_level.level;
           level_set = true;
         } else {
           const grpc_compression_options copts =
               grpc_channel_compression_options(call->channel);
-          level_set = copts.default_level.is_set;
-          if (level_set) {
+          if (copts.default_stream_compression_level.is_set) {
+            level_set = true;
+            effective_stream_compression_level =
+                copts.default_stream_compression_level.level;
+            stream_compression = true;
+          } else if (copts.default_level.is_set) {
+            level_set = true;
             effective_compression_level = copts.default_level.level;
           }
         }
         if (level_set && !call->is_client) {
-          const grpc_compression_algorithm calgo =
-              compression_algorithm_for_level_locked(
-                  call, effective_compression_level);
-          // the following will be picked up by the compress filter and used as
-          // the call's compression algorithm.
-          compression_md.key = GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST;
-          compression_md.value = grpc_compression_algorithm_slice(calgo);
-          additional_metadata_count++;
+          if (stream_compression) {
+            const grpc_stream_compression_algorithm calgo =
+                stream_compression_algorithm_for_level_locked(
+                    call, effective_stream_compression_level);
+            call->compression_md.key =
+                GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST;
+            call->compression_md.value =
+                grpc_stream_compression_algorithm_slice(calgo);
+          } else {
+            const grpc_compression_algorithm calgo =
+                compression_algorithm_for_level_locked(
+                    call, effective_compression_level);
+            /* the following will be picked up by the compress filter and used
+             * as the call's compression algorithm. */
+            call->compression_md.key =
+                GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST;
+            call->compression_md.value =
+                grpc_compression_algorithm_slice(calgo);
+            additional_metadata_count++;
+          }
         }
 
         if (op->data.send_initial_metadata.count + additional_metadata_count >
@@ -1506,7 +1790,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         if (!prepare_application_metadata(
                 exec_ctx, call, (int)op->data.send_initial_metadata.count,
                 op->data.send_initial_metadata.metadata, 0, call->is_client,
-                &compression_md, (int)additional_metadata_count)) {
+                &call->compression_md, (int)additional_metadata_count)) {
           error = GRPC_CALL_ERROR_INVALID_METADATA;
           goto done_with_error;
         }
@@ -1518,8 +1802,13 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
             &call->metadata_batch[0 /* is_receiving */][0 /* is_trailing */];
         stream_op_payload->send_initial_metadata.send_initial_metadata_flags =
             op->flags;
+        if (call->is_client) {
+          stream_op_payload->send_initial_metadata.peer_string =
+              &call->peer_string;
+        }
         break;
-      case GRPC_OP_SEND_MESSAGE:
+      }
+      case GRPC_OP_SEND_MESSAGE: {
         if (!are_write_flags_valid(op->flags)) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
           goto done_with_error;
@@ -1548,7 +1837,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op_payload->send_message.send_message =
             &call->sending_stream.base;
         break;
-      case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
+      }
+      case GRPC_OP_SEND_CLOSE_FROM_CLIENT: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1567,7 +1857,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op_payload->send_trailing_metadata.send_trailing_metadata =
             &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */];
         break;
-      case GRPC_OP_SEND_STATUS_FROM_SERVER:
+      }
+      case GRPC_OP_SEND_STATUS_FROM_SERVER: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1629,7 +1920,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op_payload->send_trailing_metadata.send_trailing_metadata =
             &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */];
         break;
-      case GRPC_OP_RECV_INITIAL_METADATA:
+      }
+      case GRPC_OP_RECV_INITIAL_METADATA: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1650,9 +1942,14 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
             &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */];
         stream_op_payload->recv_initial_metadata.recv_initial_metadata_ready =
             &call->receiving_initial_metadata_ready;
+        if (!call->is_client) {
+          stream_op_payload->recv_initial_metadata.peer_string =
+              &call->peer_string;
+        }
         num_completion_callbacks_needed++;
         break;
-      case GRPC_OP_RECV_MESSAGE:
+      }
+      case GRPC_OP_RECV_MESSAGE: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1666,13 +1963,15 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op->recv_message = true;
         call->receiving_buffer = op->data.recv_message.recv_message;
         stream_op_payload->recv_message.recv_message = &call->receiving_stream;
-        GRPC_CLOSURE_INIT(&call->receiving_stream_ready, receiving_stream_ready,
-                          bctl, grpc_schedule_on_exec_ctx);
+        GRPC_CLOSURE_INIT(&call->receiving_stream_ready,
+                          receiving_stream_ready_in_call_combiner, bctl,
+                          grpc_schedule_on_exec_ctx);
         stream_op_payload->recv_message.recv_message_ready =
             &call->receiving_stream_ready;
         num_completion_callbacks_needed++;
         break;
-      case GRPC_OP_RECV_STATUS_ON_CLIENT:
+      }
+      case GRPC_OP_RECV_STATUS_ON_CLIENT: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1699,7 +1998,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op_payload->collect_stats.collect_stats =
             &call->final_info.stats.transport_stream_stats;
         break;
-      case GRPC_OP_RECV_CLOSE_ON_SERVER:
+      }
+      case GRPC_OP_RECV_CLOSE_ON_SERVER: {
         /* Flag validation: currently allow no flags */
         if (op->flags != 0) {
           error = GRPC_CALL_ERROR_INVALID_FLAGS;
@@ -1723,6 +2023,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         stream_op_payload->collect_stats.collect_stats =
             &call->final_info.stats.transport_stream_stats;
         break;
+      }
     }
   }
 
@@ -1737,7 +2038,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
   stream_op->on_complete = &bctl->finish_batch;
   gpr_atm_rel_store(&call->any_ops_sent_atm, 1);
 
-  execute_op(exec_ctx, call, stream_op);
+  execute_batch(exec_ctx, call, stream_op, &bctl->start_batch);
 
 done:
   GPR_TIMER_END("grpc_call_start_batch", 0);
diff --git a/src/core/lib/surface/call.h b/src/core/lib/surface/call.h
index 185bfccb77..c680139cf6 100644
--- a/src/core/lib/surface/call.h
+++ b/src/core/lib/surface/call.h
@@ -19,6 +19,10 @@
 #ifndef GRPC_CORE_LIB_SURFACE_CALL_H
 #define GRPC_CORE_LIB_SURFACE_CALL_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/context.h"
 #include "src/core/lib/surface/api_trace.h"
@@ -26,10 +30,6 @@
 #include <grpc/grpc.h>
 #include <grpc/impl/codegen/compression_types.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 typedef void (*grpc_ioreq_completion_func)(grpc_exec_ctx *exec_ctx,
                                            grpc_call *call, int success,
                                            void *user_data);
@@ -37,7 +37,7 @@ typedef void (*grpc_ioreq_completion_func)(grpc_exec_ctx *exec_ctx,
 typedef struct grpc_call_create_args {
   grpc_channel *channel;
 
-  grpc_call *parent_call;
+  grpc_call *parent;
   uint32_t propagation_mask;
 
   grpc_completion_queue *cq;
@@ -89,7 +89,7 @@ grpc_call_error grpc_call_start_batch_and_execute(grpc_exec_ctx *exec_ctx,
 /* Given the top call_element, get the call object. */
 grpc_call *grpc_call_from_top_element(grpc_call_element *surface_element);
 
-void grpc_call_log_batch(char *file, int line, gpr_log_severity severity,
+void grpc_call_log_batch(const char *file, int line, gpr_log_severity severity,
                          grpc_call *call, const grpc_op *ops, size_t nops,
                          void *tag);
 
diff --git a/src/core/lib/surface/call_log_batch.c b/src/core/lib/surface/call_log_batch.c
index 4443aba58a..4a1c265817 100644
--- a/src/core/lib/surface/call_log_batch.c
+++ b/src/core/lib/surface/call_log_batch.c
@@ -103,7 +103,7 @@ char *grpc_op_string(const grpc_op *op) {
   return out;
 }
 
-void grpc_call_log_batch(char *file, int line, gpr_log_severity severity,
+void grpc_call_log_batch(const char *file, int line, gpr_log_severity severity,
                          grpc_call *call, const grpc_op *ops, size_t nops,
                          void *tag) {
   char *tmp;
diff --git a/src/core/lib/surface/call_test_only.h b/src/core/lib/surface/call_test_only.h
index 2f1b80bfd7..a5a01b3679 100644
--- a/src/core/lib/surface/call_test_only.h
+++ b/src/core/lib/surface/call_test_only.h
@@ -42,6 +42,18 @@ uint32_t grpc_call_test_only_get_message_flags(grpc_call *call);
  * To be indexed by grpc_compression_algorithm enum values. */
 uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call *call);
 
+/** Returns a bitset for the stream encodings (stream compression algorithms)
+ * supported by \a call's peer.
+ *
+ * To be indexed by grpc_stream_compression_algorithm enum values. */
+uint32_t grpc_call_test_only_get_stream_encodings_accepted_by_peer(
+    grpc_call *call);
+
+/** Returns the incoming stream compression algorithm (content-encoding header)
+ * received by a call. */
+grpc_stream_compression_algorithm
+grpc_call_test_only_get_incoming_stream_encodings(grpc_call *call);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/core/lib/surface/channel.c b/src/core/lib/surface/channel.c
index 5780a18ce8..48962e5e45 100644
--- a/src/core/lib/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -27,6 +27,7 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
@@ -77,6 +78,11 @@ grpc_channel *grpc_channel_create_with_builder(
   grpc_channel_args *args = grpc_channel_args_copy(
       grpc_channel_stack_builder_get_channel_arguments(builder));
   grpc_channel *channel;
+  if (channel_stack_type == GRPC_SERVER_CHANNEL) {
+    GRPC_STATS_INC_SERVER_CHANNELS_CREATED(exec_ctx);
+  } else {
+    GRPC_STATS_INC_CLIENT_CHANNELS_CREATED(exec_ctx);
+  }
   grpc_error *error = grpc_channel_stack_builder_finish(
       exec_ctx, builder, sizeof(grpc_channel), 1, destroy_channel, NULL,
       (void **)&channel);
@@ -142,6 +148,16 @@ grpc_channel *grpc_channel_create_with_builder(
                                      GRPC_COMPRESS_LEVEL_NONE,
                                      GRPC_COMPRESS_LEVEL_COUNT - 1});
     } else if (0 == strcmp(args->args[i].key,
+                           GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
+      channel->compression_options.default_stream_compression_level.is_set =
+          true;
+      channel->compression_options.default_stream_compression_level.level =
+          (grpc_stream_compression_level)grpc_channel_arg_get_integer(
+              &args->args[i],
+              (grpc_integer_options){GRPC_STREAM_COMPRESS_LEVEL_NONE,
+                                     GRPC_STREAM_COMPRESS_LEVEL_NONE,
+                                     GRPC_STREAM_COMPRESS_LEVEL_COUNT - 1});
+    } else if (0 == strcmp(args->args[i].key,
                            GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
       channel->compression_options.default_algorithm.is_set = true;
       channel->compression_options.default_algorithm.algorithm =
@@ -149,12 +165,31 @@ grpc_channel *grpc_channel_create_with_builder(
               &args->args[i],
               (grpc_integer_options){GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE,
                                      GRPC_COMPRESS_ALGORITHMS_COUNT - 1});
+    } else if (0 == strcmp(args->args[i].key,
+                           GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
+      channel->compression_options.default_stream_compression_algorithm.is_set =
+          true;
+      channel->compression_options.default_stream_compression_algorithm
+          .algorithm =
+          (grpc_stream_compression_algorithm)grpc_channel_arg_get_integer(
+              &args->args[i],
+              (grpc_integer_options){
+                  GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE,
+                  GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT - 1});
     } else if (0 ==
                strcmp(args->args[i].key,
                       GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
       channel->compression_options.enabled_algorithms_bitset =
           (uint32_t)args->args[i].value.integer |
           0x1; /* always support no compression */
+    } else if (0 ==
+               strcmp(
+                   args->args[i].key,
+                   GRPC_STREAM_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
+      channel->compression_options
+          .enabled_stream_compression_algorithms_bitset =
+          (uint32_t)args->args[i].value.integer |
+          0x1; /* always support no compression */
     }
   }
 
@@ -247,7 +282,7 @@ static grpc_call *grpc_channel_create_call_internal(
   grpc_call_create_args args;
   memset(&args, 0, sizeof(args));
   args.channel = channel;
-  args.parent_call = parent_call;
+  args.parent = parent_call;
   args.propagation_mask = propagation_mask;
   args.cq = cq;
   args.pollset_set_alternative = pollset_set_alternative;
@@ -298,7 +333,7 @@ grpc_call *grpc_channel_create_pollset_set_call(
 
 void *grpc_channel_register_call(grpc_channel *channel, const char *method,
                                  const char *host, void *reserved) {
-  registered_call *rc = gpr_malloc(sizeof(registered_call));
+  registered_call *rc = (registered_call *)gpr_malloc(sizeof(registered_call));
   GRPC_API_TRACE(
       "grpc_channel_register_call(channel=%p, method=%s, host=%s, reserved=%p)",
       4, (channel, method, host, reserved));
@@ -325,7 +360,7 @@ grpc_call *grpc_channel_create_registered_call(
     grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask,
     grpc_completion_queue *completion_queue, void *registered_call_handle,
     gpr_timespec deadline, void *reserved) {
-  registered_call *rc = registered_call_handle;
+  registered_call *rc = (registered_call *)registered_call_handle;
   GRPC_API_TRACE(
       "grpc_channel_create_registered_call("
       "channel=%p, parent_call=%p, propagation_mask=%x, completion_queue=%p, "
@@ -363,7 +398,7 @@ void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx,
 
 static void destroy_channel(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error) {
-  grpc_channel *channel = arg;
+  grpc_channel *channel = (grpc_channel *)arg;
   grpc_channel_stack_destroy(exec_ctx, CHANNEL_STACK_FROM_CHANNEL(channel));
   while (channel->registered_calls) {
     registered_call *rc = channel->registered_calls;
diff --git a/src/core/lib/surface/channel_init.c b/src/core/lib/surface/channel_init.c
index a1391ffe56..33f444b89e 100644
--- a/src/core/lib/surface/channel_init.c
+++ b/src/core/lib/surface/channel_init.c
@@ -53,9 +53,9 @@ void grpc_channel_init_register_stage(grpc_channel_stack_type type,
   GPR_ASSERT(!g_finalized);
   if (g_slots[type].cap_slots == g_slots[type].num_slots) {
     g_slots[type].cap_slots = GPR_MAX(8, 3 * g_slots[type].cap_slots / 2);
-    g_slots[type].slots =
-        gpr_realloc(g_slots[type].slots,
-                    g_slots[type].cap_slots * sizeof(*g_slots[type].slots));
+    g_slots[type].slots = (stage_slot *)gpr_realloc(
+        g_slots[type].slots,
+        g_slots[type].cap_slots * sizeof(*g_slots[type].slots));
   }
   stage_slot *s = &g_slots[type].slots[g_slots[type].num_slots++];
   s->insertion_order = g_slots[type].num_slots;
@@ -65,8 +65,8 @@ void grpc_channel_init_register_stage(grpc_channel_stack_type type,
 }
 
 static int compare_slots(const void *a, const void *b) {
-  const stage_slot *sa = a;
-  const stage_slot *sb = b;
+  const stage_slot *sa = (const stage_slot *)a;
+  const stage_slot *sb = (const stage_slot *)b;
 
   int c = GPR_ICMP(sa->priority, sb->priority);
   if (c != 0) return c;
@@ -85,7 +85,7 @@ void grpc_channel_init_finalize(void) {
 void grpc_channel_init_shutdown(void) {
   for (int i = 0; i < GRPC_NUM_CHANNEL_STACK_TYPES; i++) {
     gpr_free(g_slots[i].slots);
-    g_slots[i].slots = (void *)(uintptr_t)0xdeadbeef;
+    g_slots[i].slots = (stage_slot *)(void *)(uintptr_t)0xdeadbeef;
   }
 }
 
diff --git a/src/core/lib/surface/channel_ping.c b/src/core/lib/surface/channel_ping.c
index e85b308850..f45b568958 100644
--- a/src/core/lib/surface/channel_ping.c
+++ b/src/core/lib/surface/channel_ping.c
@@ -39,7 +39,7 @@ static void ping_destroy(grpc_exec_ctx *exec_ctx, void *arg,
 }
 
 static void ping_done(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  ping_result *pr = arg;
+  ping_result *pr = (ping_result *)arg;
   grpc_cq_end_op(exec_ctx, pr->cq, pr->tag, GRPC_ERROR_REF(error), ping_destroy,
                  pr, &pr->completion_storage);
 }
@@ -49,7 +49,7 @@ void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq,
   GRPC_API_TRACE("grpc_channel_ping(channel=%p, cq=%p, tag=%p, reserved=%p)", 4,
                  (channel, cq, tag, reserved));
   grpc_transport_op *op = grpc_make_transport_op(NULL);
-  ping_result *pr = gpr_malloc(sizeof(*pr));
+  ping_result *pr = (ping_result *)gpr_malloc(sizeof(*pr));
   grpc_channel_element *top_elem =
       grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index c20cfbc740..fed66e3a20 100644
--- a/src/core/lib/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -26,6 +26,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/pollset.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
@@ -54,7 +55,7 @@ typedef struct {
   bool can_listen;
   size_t (*size)(void);
   void (*init)(grpc_pollset *pollset, gpr_mu **mu);
-  grpc_error *(*kick)(grpc_pollset *pollset,
+  grpc_error *(*kick)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                       grpc_pollset_worker *specific_worker);
   grpc_error *(*work)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
                       grpc_pollset_worker **worker, gpr_timespec now,
@@ -130,7 +131,8 @@ static grpc_error *non_polling_poller_work(grpc_exec_ctx *exec_ctx,
 }
 
 static grpc_error *non_polling_poller_kick(
-    grpc_pollset *pollset, grpc_pollset_worker *specific_worker) {
+    grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+    grpc_pollset_worker *specific_worker) {
   non_polling_poller *p = (non_polling_poller *)pollset;
   if (specific_worker == NULL) specific_worker = (grpc_pollset_worker *)p->root;
   if (specific_worker != NULL) {
@@ -327,25 +329,12 @@ static void cq_destroy_pluck(void *data);
 /* Completion queue vtables based on the completion-type */
 static const cq_vtable g_cq_vtable[] = {
     /* GRPC_CQ_NEXT */
-    {.data_size = sizeof(cq_next_data),
-     .cq_completion_type = GRPC_CQ_NEXT,
-     .init = cq_init_next,
-     .shutdown = cq_shutdown_next,
-     .destroy = cq_destroy_next,
-     .begin_op = cq_begin_op_for_next,
-     .end_op = cq_end_op_for_next,
-     .next = cq_next,
-     .pluck = NULL},
+    {GRPC_CQ_NEXT, sizeof(cq_next_data), cq_init_next, cq_shutdown_next,
+     cq_destroy_next, cq_begin_op_for_next, cq_end_op_for_next, cq_next, NULL},
     /* GRPC_CQ_PLUCK */
-    {.data_size = sizeof(cq_pluck_data),
-     .cq_completion_type = GRPC_CQ_PLUCK,
-     .init = cq_init_pluck,
-     .shutdown = cq_shutdown_pluck,
-     .destroy = cq_destroy_pluck,
-     .begin_op = cq_begin_op_for_pluck,
-     .end_op = cq_end_op_for_pluck,
-     .next = NULL,
-     .pluck = cq_pluck},
+    {GRPC_CQ_PLUCK, sizeof(cq_pluck_data), cq_init_pluck, cq_shutdown_pluck,
+     cq_destroy_pluck, cq_begin_op_for_pluck, cq_end_op_for_pluck, NULL,
+     cq_pluck},
 };
 
 #define DATA_FROM_CQ(cq) ((void *)(cq + 1))
@@ -420,8 +409,13 @@ grpc_completion_queue *grpc_completion_queue_create_internal(
   const cq_poller_vtable *poller_vtable =
       &g_poller_vtable_by_poller_type[polling_type];
 
-  cq = gpr_zalloc(sizeof(grpc_completion_queue) + vtable->data_size +
-                  poller_vtable->size());
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_STATS_INC_CQS_CREATED(&exec_ctx);
+  grpc_exec_ctx_finish(&exec_ctx);
+
+  cq = (grpc_completion_queue *)gpr_zalloc(sizeof(grpc_completion_queue) +
+                                           vtable->data_size +
+                                           poller_vtable->size());
 
   cq->vtable = vtable;
   cq->poller_vtable = poller_vtable;
@@ -441,7 +435,7 @@ grpc_completion_queue *grpc_completion_queue_create_internal(
 }
 
 static void cq_init_next(void *ptr) {
-  cq_next_data *cqd = ptr;
+  cq_next_data *cqd = (cq_next_data *)ptr;
   /* Initial count is dropped by grpc_completion_queue_shutdown */
   gpr_atm_no_barrier_store(&cqd->pending_events, 1);
   cqd->shutdown_called = false;
@@ -450,13 +444,13 @@ static void cq_init_next(void *ptr) {
 }
 
 static void cq_destroy_next(void *ptr) {
-  cq_next_data *cqd = ptr;
+  cq_next_data *cqd = (cq_next_data *)ptr;
   GPR_ASSERT(cq_event_queue_num_items(&cqd->queue) == 0);
   cq_event_queue_destroy(&cqd->queue);
 }
 
 static void cq_init_pluck(void *ptr) {
-  cq_pluck_data *cqd = ptr;
+  cq_pluck_data *cqd = (cq_pluck_data *)ptr;
   /* Initial count is dropped by grpc_completion_queue_shutdown */
   gpr_atm_no_barrier_store(&cqd->pending_events, 1);
   cqd->completed_tail = &cqd->completed_head;
@@ -468,7 +462,7 @@ static void cq_init_pluck(void *ptr) {
 }
 
 static void cq_destroy_pluck(void *ptr) {
-  cq_pluck_data *cqd = ptr;
+  cq_pluck_data *cqd = (cq_pluck_data *)ptr;
   GPR_ASSERT(cqd->completed_head.next == (uintptr_t)&cqd->completed_head);
 }
 
@@ -501,7 +495,7 @@ void grpc_cq_internal_ref(grpc_completion_queue *cq) {
 
 static void on_pollset_shutdown_done(grpc_exec_ctx *exec_ctx, void *arg,
                                      grpc_error *error) {
-  grpc_completion_queue *cq = arg;
+  grpc_completion_queue *cq = (grpc_completion_queue *)arg;
   GRPC_CQ_INTERNAL_UNREF(exec_ctx, cq, "pollset_destroy");
 }
 
@@ -559,13 +553,13 @@ static void cq_check_tag(grpc_completion_queue *cq, void *tag, bool lock_cq) {}
  * true if the increment was successful; false if the counter is zero */
 static bool atm_inc_if_nonzero(gpr_atm *counter) {
   while (true) {
-    gpr_atm count = gpr_atm_no_barrier_load(counter);
+    gpr_atm count = gpr_atm_acq_load(counter);
     /* If zero, we are done. If not, we must to a CAS (instead of an atomic
      * increment) to maintain the contract: do not increment the counter if it
      * is zero. */
     if (count == 0) {
       return false;
-    } else if (gpr_atm_no_barrier_cas(counter, count, count + 1)) {
+    } else if (gpr_atm_full_cas(counter, count, count + 1)) {
       break;
     }
   }
@@ -574,12 +568,12 @@ static bool atm_inc_if_nonzero(gpr_atm *counter) {
 }
 
 static bool cq_begin_op_for_next(grpc_completion_queue *cq, void *tag) {
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
   return atm_inc_if_nonzero(&cqd->pending_events);
 }
 
 static bool cq_begin_op_for_pluck(grpc_completion_queue *cq, void *tag) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
   return atm_inc_if_nonzero(&cqd->pending_events);
 }
 
@@ -588,9 +582,9 @@ bool grpc_cq_begin_op(grpc_completion_queue *cq, void *tag) {
   gpr_mu_lock(cq->mu);
   if (cq->outstanding_tag_count == cq->outstanding_tag_capacity) {
     cq->outstanding_tag_capacity = GPR_MAX(4, 2 * cq->outstanding_tag_capacity);
-    cq->outstanding_tags =
-        gpr_realloc(cq->outstanding_tags, sizeof(*cq->outstanding_tags) *
-                                              cq->outstanding_tag_capacity);
+    cq->outstanding_tags = (void **)gpr_realloc(
+        cq->outstanding_tags,
+        sizeof(*cq->outstanding_tags) * cq->outstanding_tag_capacity);
   }
   cq->outstanding_tags[cq->outstanding_tag_count++] = tag;
   gpr_mu_unlock(cq->mu);
@@ -624,7 +618,7 @@ static void cq_end_op_for_next(grpc_exec_ctx *exec_ctx,
     }
   }
 
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
   int is_success = (error == GRPC_ERROR_NONE);
 
   storage->tag = tag;
@@ -637,15 +631,19 @@ static void cq_end_op_for_next(grpc_exec_ctx *exec_ctx,
   /* Add the completion to the queue */
   bool is_first = cq_event_queue_push(&cqd->queue, storage);
   gpr_atm_no_barrier_fetch_add(&cqd->things_queued_ever, 1);
-  bool will_definitely_shutdown =
-      gpr_atm_no_barrier_load(&cqd->pending_events) == 1;
+
+  /* Since we do not hold the cq lock here, it is important to do an 'acquire'
+     load here (instead of a 'no_barrier' load) to match with the release store
+     (done via gpr_atm_full_fetch_add(pending_events, -1)) in cq_shutdown_next
+     */
+  bool will_definitely_shutdown = gpr_atm_acq_load(&cqd->pending_events) == 1;
 
   if (!will_definitely_shutdown) {
     /* Only kick if this is the first item queued */
     if (is_first) {
       gpr_mu_lock(cq->mu);
       grpc_error *kick_error =
-          cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), NULL);
+          cq->poller_vtable->kick(exec_ctx, POLLSET_FROM_CQ(cq), NULL);
       gpr_mu_unlock(cq->mu);
 
       if (kick_error != GRPC_ERROR_NONE) {
@@ -685,7 +683,7 @@ static void cq_end_op_for_pluck(grpc_exec_ctx *exec_ctx,
                                              void *done_arg,
                                              grpc_cq_completion *storage),
                                 void *done_arg, grpc_cq_completion *storage) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
   int is_success = (error == GRPC_ERROR_NONE);
 
   GPR_TIMER_BEGIN("cq_end_op_for_pluck", 0);
@@ -731,7 +729,7 @@ static void cq_end_op_for_pluck(grpc_exec_ctx *exec_ctx,
     }
 
     grpc_error *kick_error =
-        cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), pluck_worker);
+        cq->poller_vtable->kick(exec_ctx, POLLSET_FROM_CQ(cq), pluck_worker);
 
     gpr_mu_unlock(cq->mu);
 
@@ -766,9 +764,9 @@ typedef struct {
 } cq_is_finished_arg;
 
 static bool cq_is_next_finished(grpc_exec_ctx *exec_ctx, void *arg) {
-  cq_is_finished_arg *a = arg;
+  cq_is_finished_arg *a = (cq_is_finished_arg *)arg;
   grpc_completion_queue *cq = a->cq;
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
   GPR_ASSERT(a->stolen_completion == NULL);
 
   gpr_atm current_last_seen_things_queued_ever =
@@ -819,7 +817,7 @@ static grpc_event cq_next(grpc_completion_queue *cq, gpr_timespec deadline,
                           void *reserved) {
   grpc_event ret;
   gpr_timespec now;
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
 
   GPR_TIMER_BEGIN("grpc_completion_queue_next", 0);
 
@@ -882,7 +880,7 @@ static grpc_event cq_next(grpc_completion_queue *cq, gpr_timespec deadline,
       }
     }
 
-    if (gpr_atm_no_barrier_load(&cqd->pending_events) == 0) {
+    if (gpr_atm_acq_load(&cqd->pending_events) == 0) {
       /* Before returning, check if the queue has any items left over (since
          gpr_mpscq_pop() can sometimes return NULL even if the queue is not
          empty. If so, keep retrying but do not return GRPC_QUEUE_SHUTDOWN */
@@ -928,9 +926,9 @@ static grpc_event cq_next(grpc_completion_queue *cq, gpr_timespec deadline,
   }
 
   if (cq_event_queue_num_items(&cqd->queue) > 0 &&
-      gpr_atm_no_barrier_load(&cqd->pending_events) > 0) {
+      gpr_atm_acq_load(&cqd->pending_events) > 0) {
     gpr_mu_lock(cq->mu);
-    cq->poller_vtable->kick(POLLSET_FROM_CQ(cq), NULL);
+    cq->poller_vtable->kick(&exec_ctx, POLLSET_FROM_CQ(cq), NULL);
     gpr_mu_unlock(cq->mu);
   }
 
@@ -952,7 +950,7 @@ static grpc_event cq_next(grpc_completion_queue *cq, gpr_timespec deadline,
    this function */
 static void cq_finish_shutdown_next(grpc_exec_ctx *exec_ctx,
                                     grpc_completion_queue *cq) {
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
 
   GPR_ASSERT(cqd->shutdown_called);
   GPR_ASSERT(gpr_atm_no_barrier_load(&cqd->pending_events) == 0);
@@ -963,7 +961,7 @@ static void cq_finish_shutdown_next(grpc_exec_ctx *exec_ctx,
 
 static void cq_shutdown_next(grpc_exec_ctx *exec_ctx,
                              grpc_completion_queue *cq) {
-  cq_next_data *cqd = DATA_FROM_CQ(cq);
+  cq_next_data *cqd = (cq_next_data *)DATA_FROM_CQ(cq);
 
   /* Need an extra ref for cq here because:
    * We call cq_finish_shutdown_next() below, that would call pollset shutdown.
@@ -976,10 +974,12 @@ static void cq_shutdown_next(grpc_exec_ctx *exec_ctx,
   if (cqd->shutdown_called) {
     gpr_mu_unlock(cq->mu);
     GRPC_CQ_INTERNAL_UNREF(exec_ctx, cq, "shutting_down");
-    GPR_TIMER_END("grpc_completion_queue_shutdown", 0);
     return;
   }
   cqd->shutdown_called = true;
+  /* Doing a full_fetch_add (i.e acq/release) here to match with
+   * cq_begin_op_for_next and and cq_end_op_for_next functions which read/write
+   * on this counter without necessarily holding a lock on cq */
   if (gpr_atm_full_fetch_add(&cqd->pending_events, -1) == 1) {
     cq_finish_shutdown_next(exec_ctx, cq);
   }
@@ -994,7 +994,7 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cq,
 
 static int add_plucker(grpc_completion_queue *cq, void *tag,
                        grpc_pollset_worker **worker) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
   if (cqd->num_pluckers == GRPC_MAX_COMPLETION_QUEUE_PLUCKERS) {
     return 0;
   }
@@ -1006,7 +1006,7 @@ static int add_plucker(grpc_completion_queue *cq, void *tag,
 
 static void del_plucker(grpc_completion_queue *cq, void *tag,
                         grpc_pollset_worker **worker) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
   for (int i = 0; i < cqd->num_pluckers; i++) {
     if (cqd->pluckers[i].tag == tag && cqd->pluckers[i].worker == worker) {
       cqd->num_pluckers--;
@@ -1018,9 +1018,9 @@ static void del_plucker(grpc_completion_queue *cq, void *tag,
 }
 
 static bool cq_is_pluck_finished(grpc_exec_ctx *exec_ctx, void *arg) {
-  cq_is_finished_arg *a = arg;
+  cq_is_finished_arg *a = (cq_is_finished_arg *)arg;
   grpc_completion_queue *cq = a->cq;
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
 
   GPR_ASSERT(a->stolen_completion == NULL);
   gpr_atm current_last_seen_things_queued_ever =
@@ -1057,7 +1057,7 @@ static grpc_event cq_pluck(grpc_completion_queue *cq, void *tag,
   grpc_cq_completion *prev;
   grpc_pollset_worker *worker = NULL;
   gpr_timespec now;
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
 
   GPR_TIMER_BEGIN("grpc_completion_queue_pluck", 0);
 
@@ -1181,7 +1181,7 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cq, void *tag,
 
 static void cq_finish_shutdown_pluck(grpc_exec_ctx *exec_ctx,
                                      grpc_completion_queue *cq) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
 
   GPR_ASSERT(cqd->shutdown_called);
   GPR_ASSERT(!gpr_atm_no_barrier_load(&cqd->shutdown));
@@ -1195,7 +1195,7 @@ static void cq_finish_shutdown_pluck(grpc_exec_ctx *exec_ctx,
  * merging them is a bit tricky and probably not worth it */
 static void cq_shutdown_pluck(grpc_exec_ctx *exec_ctx,
                               grpc_completion_queue *cq) {
-  cq_pluck_data *cqd = DATA_FROM_CQ(cq);
+  cq_pluck_data *cqd = (cq_pluck_data *)DATA_FROM_CQ(cq);
 
   /* Need an extra ref for cq here because:
    * We call cq_finish_shutdown_pluck() below, that would call pollset shutdown.
@@ -1208,7 +1208,6 @@ static void cq_shutdown_pluck(grpc_exec_ctx *exec_ctx,
   if (cqd->shutdown_called) {
     gpr_mu_unlock(cq->mu);
     GRPC_CQ_INTERNAL_UNREF(exec_ctx, cq, "shutting_down (pluck cq)");
-    GPR_TIMER_END("grpc_completion_queue_shutdown", 0);
     return;
   }
   cqd->shutdown_called = true;
diff --git a/src/core/lib/surface/init.c b/src/core/lib/surface/init.c
index d199ac060e..b089da2c54 100644
--- a/src/core/lib/surface/init.c
+++ b/src/core/lib/surface/init.c
@@ -28,12 +28,15 @@
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/iomgr/resource_quota.h"
+#include "src/core/lib/iomgr/timer_manager.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/surface/alarm_internal.h"
@@ -118,6 +121,7 @@ void grpc_init(void) {
   gpr_mu_lock(&g_init_mu);
   if (++g_initializations == 1) {
     gpr_time_init();
+    grpc_stats_init();
     grpc_slice_intern_init();
     grpc_mdctx_global_init();
     grpc_channel_init_init();
@@ -127,6 +131,7 @@ void grpc_init(void) {
     grpc_register_tracer(&grpc_trace_channel_stack_builder);
     grpc_register_tracer(&grpc_http1_trace);
     grpc_register_tracer(&grpc_cq_pluck_trace);  // default on
+    grpc_register_tracer(&grpc_call_combiner_trace);
     grpc_register_tracer(&grpc_combiner_trace);
     grpc_register_tracer(&grpc_server_channel_trace);
     grpc_register_tracer(&grpc_bdp_estimator_trace);
@@ -175,17 +180,20 @@ void grpc_shutdown(void) {
       GRPC_EXEC_CTX_INITIALIZER(0, grpc_never_ready_to_finish, NULL);
   gpr_mu_lock(&g_init_mu);
   if (--g_initializations == 0) {
-    grpc_iomgr_shutdown(&exec_ctx);
-    gpr_timers_global_destroy();
-    grpc_tracer_shutdown();
+    grpc_executor_shutdown(&exec_ctx);
+    grpc_timer_manager_set_threading(false);  // shutdown timer_manager thread
     for (i = g_number_of_plugins; i >= 0; i--) {
       if (g_all_of_the_plugins[i].destroy != NULL) {
         g_all_of_the_plugins[i].destroy();
       }
     }
+    grpc_iomgr_shutdown(&exec_ctx);
+    gpr_timers_global_destroy();
+    grpc_tracer_shutdown();
     grpc_mdctx_global_shutdown(&exec_ctx);
     grpc_handshaker_factory_registry_shutdown(&exec_ctx);
     grpc_slice_intern_shutdown();
+    grpc_stats_shutdown();
   }
   gpr_mu_unlock(&g_init_mu);
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/lib/surface/lame_client.cc b/src/core/lib/surface/lame_client.cc
index a0791080a9..6286f9159d 100644
--- a/src/core/lib/surface/lame_client.cc
+++ b/src/core/lib/surface/lame_client.cc
@@ -40,6 +40,7 @@ namespace grpc_core {
 namespace {
 
 struct CallData {
+  grpc_call_combiner *call_combiner;
   grpc_linked_mdelem status;
   grpc_linked_mdelem details;
   grpc_core::atomic<bool> filled_metadata;
@@ -52,14 +53,14 @@ struct ChannelData {
 
 static void fill_metadata(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                           grpc_metadata_batch *mdb) {
-  CallData *calld = static_cast<CallData *>(elem->call_data);
+  CallData *calld = reinterpret_cast<CallData *>(elem->call_data);
   bool expected = false;
   if (!calld->filled_metadata.compare_exchange_strong(
           expected, true, grpc_core::memory_order_relaxed,
           grpc_core::memory_order_relaxed)) {
     return;
   }
-  ChannelData *chand = static_cast<ChannelData *>(elem->channel_data);
+  ChannelData *chand = reinterpret_cast<ChannelData *>(elem->channel_data);
   char tmp[GPR_LTOA_MIN_BUFSIZE];
   gpr_ltoa(chand->error_code, tmp);
   calld->status.md = grpc_mdelem_from_slices(
@@ -79,6 +80,7 @@ static void fill_metadata(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 static void lame_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *op) {
+  CallData *calld = reinterpret_cast<CallData *>(elem->call_data);
   if (op->recv_initial_metadata) {
     fill_metadata(exec_ctx, elem,
                   op->payload->recv_initial_metadata.recv_initial_metadata);
@@ -87,12 +89,8 @@ static void lame_start_transport_stream_op_batch(
                   op->payload->recv_trailing_metadata.recv_trailing_metadata);
   }
   grpc_transport_stream_op_batch_finish_with_failure(
-      exec_ctx, op,
-      GRPC_ERROR_CREATE_FROM_STATIC_STRING("lame client channel"));
-}
-
-static char *lame_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return NULL;
+      exec_ctx, op, GRPC_ERROR_CREATE_FROM_STATIC_STRING("lame client channel"),
+      calld->call_combiner);
 }
 
 static void lame_get_channel_info(grpc_exec_ctx *exec_ctx,
@@ -122,6 +120,8 @@ static void lame_start_transport_op(grpc_exec_ctx *exec_ctx,
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
+  CallData *calld = reinterpret_cast<CallData *>(elem->call_data);
+  calld->call_combiner = args->call_combiner;
   return GRPC_ERROR_NONE;
 }
 
@@ -156,7 +156,6 @@ extern "C" const grpc_channel_filter grpc_lame_filter = {
     sizeof(grpc_core::ChannelData),
     grpc_core::init_channel_elem,
     grpc_core::destroy_channel_elem,
-    grpc_core::lame_get_peer,
     grpc_core::lame_get_channel_info,
     "lame-client",
 };
@@ -176,7 +175,7 @@ grpc_channel *grpc_lame_client_channel_create(const char *target,
       "error_message=%s)",
       3, (target, (int)error_code, error_message));
   GPR_ASSERT(elem->filter == &grpc_lame_filter);
-  auto chand = static_cast<grpc_core::ChannelData *>(elem->channel_data);
+  auto chand = reinterpret_cast<grpc_core::ChannelData *>(elem->channel_data);
   chand->error_code = error_code;
   chand->error_message = error_message;
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/lib/surface/server.c b/src/core/lib/surface/server.c
index 66dcc299aa..1d0fd472d0 100644
--- a/src/core/lib/surface/server.c
+++ b/src/core/lib/surface/server.c
@@ -29,6 +29,7 @@
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/slice/slice_internal.h"
@@ -75,7 +76,7 @@ typedef struct requested_call {
       grpc_call_details *details;
     } batch;
     struct {
-      registered_method *registered_method;
+      registered_method *method;
       gpr_timespec *deadline;
       grpc_byte_buffer **optional_payload;
     } registered;
@@ -144,7 +145,7 @@ struct call_data {
   uint32_t recv_initial_metadata_flags;
   grpc_metadata_array initial_metadata;
 
-  request_matcher *request_matcher;
+  request_matcher *matcher;
   grpc_byte_buffer *payload;
 
   grpc_closure got_initial_metadata;
@@ -170,7 +171,7 @@ struct registered_method {
   grpc_server_register_method_payload_handling payload_handling;
   uint32_t flags;
   /* one request matcher per method */
-  request_matcher request_matcher;
+  request_matcher matcher;
   registered_method *next;
 };
 
@@ -250,7 +251,8 @@ static void channel_broadcaster_init(grpc_server *s, channel_broadcaster *cb) {
     count++;
   }
   cb->num_channels = count;
-  cb->channels = gpr_malloc(sizeof(*cb->channels) * cb->num_channels);
+  cb->channels =
+      (grpc_channel **)gpr_malloc(sizeof(*cb->channels) * cb->num_channels);
   count = 0;
   for (c = s->root_channel_data.next; c != &s->root_channel_data; c = c->next) {
     cb->channels[count++] = c->channel;
@@ -265,14 +267,15 @@ struct shutdown_cleanup_args {
 
 static void shutdown_cleanup(grpc_exec_ctx *exec_ctx, void *arg,
                              grpc_error *error) {
-  struct shutdown_cleanup_args *a = arg;
+  struct shutdown_cleanup_args *a = (struct shutdown_cleanup_args *)arg;
   grpc_slice_unref_internal(exec_ctx, a->slice);
   gpr_free(a);
 }
 
 static void send_shutdown(grpc_exec_ctx *exec_ctx, grpc_channel *channel,
                           bool send_goaway, grpc_error *send_disconnect) {
-  struct shutdown_cleanup_args *sc = gpr_malloc(sizeof(*sc));
+  struct shutdown_cleanup_args *sc =
+      (struct shutdown_cleanup_args *)gpr_malloc(sizeof(*sc));
   GRPC_CLOSURE_INIT(&sc->closure, shutdown_cleanup, sc,
                     grpc_schedule_on_exec_ctx);
   grpc_transport_op *op = grpc_make_transport_op(&sc->closure);
@@ -314,8 +317,8 @@ static void request_matcher_init(request_matcher *rm, size_t entries,
                                  grpc_server *server) {
   memset(rm, 0, sizeof(*rm));
   rm->server = server;
-  rm->requests_per_cq =
-      gpr_malloc(sizeof(*rm->requests_per_cq) * server->cq_count);
+  rm->requests_per_cq = (gpr_stack_lockfree **)gpr_malloc(
+      sizeof(*rm->requests_per_cq) * server->cq_count);
   for (size_t i = 0; i < server->cq_count; i++) {
     rm->requests_per_cq[i] = gpr_stack_lockfree_create(entries);
   }
@@ -331,7 +334,7 @@ static void request_matcher_destroy(request_matcher *rm) {
 
 static void kill_zombie(grpc_exec_ctx *exec_ctx, void *elem,
                         grpc_error *error) {
-  grpc_call_unref(grpc_call_from_top_element(elem));
+  grpc_call_unref(grpc_call_from_top_element((grpc_call_element *)elem));
 }
 
 static void request_matcher_zombify_all_pending_calls(grpc_exec_ctx *exec_ctx,
@@ -384,7 +387,7 @@ static void server_delete(grpc_exec_ctx *exec_ctx, grpc_server *server) {
   while ((rm = server->registered_methods) != NULL) {
     server->registered_methods = rm->next;
     if (server->started) {
-      request_matcher_destroy(&rm->request_matcher);
+      request_matcher_destroy(&rm->matcher);
     }
     gpr_free(rm->method);
     gpr_free(rm->host);
@@ -426,7 +429,7 @@ static void orphan_channel(channel_data *chand) {
 
 static void finish_destroy_channel(grpc_exec_ctx *exec_ctx, void *cd,
                                    grpc_error *error) {
-  channel_data *chand = cd;
+  channel_data *chand = (channel_data *)cd;
   grpc_server *server = chand->server;
   GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, chand->channel, "server");
   server_unref(exec_ctx, server);
@@ -459,7 +462,7 @@ static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand,
 
 static void done_request_event(grpc_exec_ctx *exec_ctx, void *req,
                                grpc_cq_completion *c) {
-  requested_call *rc = req;
+  requested_call *rc = (requested_call *)req;
   grpc_server *server = rc->server;
 
   if (rc >= server->requested_calls_per_cq[rc->cq_idx] &&
@@ -505,7 +508,7 @@ static void publish_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
 
   grpc_call_element *elem =
       grpc_call_stack_element(grpc_call_get_call_stack(call), 0);
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   server_ref(chand->server);
   grpc_cq_end_op(exec_ctx, calld->cq_new, rc->tag, GRPC_ERROR_NONE,
                  done_request_event, rc, &rc->completion);
@@ -513,10 +516,10 @@ static void publish_call(grpc_exec_ctx *exec_ctx, grpc_server *server,
 
 static void publish_new_rpc(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error) {
-  grpc_call_element *call_elem = arg;
-  call_data *calld = call_elem->call_data;
-  channel_data *chand = call_elem->channel_data;
-  request_matcher *rm = calld->request_matcher;
+  grpc_call_element *call_elem = (grpc_call_element *)arg;
+  call_data *calld = (call_data *)call_elem->call_data;
+  channel_data *chand = (channel_data *)call_elem->channel_data;
+  request_matcher *rm = calld->matcher;
   grpc_server *server = rm->server;
 
   if (error != GRPC_ERROR_NONE || gpr_atm_acq_load(&server->shutdown_flag)) {
@@ -538,6 +541,7 @@ static void publish_new_rpc(grpc_exec_ctx *exec_ctx, void *arg,
     if (request_id == -1) {
       continue;
     } else {
+      GRPC_STATS_INC_SERVER_CQS_CHECKED(exec_ctx, i);
       gpr_mu_lock(&calld->mu_state);
       calld->state = ACTIVATED;
       gpr_mu_unlock(&calld->mu_state);
@@ -548,6 +552,7 @@ static void publish_new_rpc(grpc_exec_ctx *exec_ctx, void *arg,
   }
 
   /* no cq to take the request found: queue it on the slow list */
+  GRPC_STATS_INC_SERVER_SLOWPATH_REQUESTS_QUEUED(exec_ctx);
   gpr_mu_lock(&server->mu_call);
   gpr_mu_lock(&calld->mu_state);
   calld->state = PENDING;
@@ -566,7 +571,7 @@ static void finish_start_new_rpc(
     grpc_exec_ctx *exec_ctx, grpc_server *server, grpc_call_element *elem,
     request_matcher *rm,
     grpc_server_register_method_payload_handling payload_handling) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   if (gpr_atm_acq_load(&server->shutdown_flag)) {
     gpr_mu_lock(&calld->mu_state);
@@ -578,7 +583,7 @@ static void finish_start_new_rpc(
     return;
   }
 
-  calld->request_matcher = rm;
+  calld->matcher = rm;
 
   switch (payload_handling) {
     case GRPC_SRM_PAYLOAD_NONE:
@@ -599,8 +604,8 @@ static void finish_start_new_rpc(
 }
 
 static void start_new_rpc(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
   grpc_server *server = chand->server;
   uint32_t i;
   uint32_t hash;
@@ -624,7 +629,7 @@ static void start_new_rpc(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
         continue;
       }
       finish_start_new_rpc(exec_ctx, server, elem,
-                           &rm->server_registered_method->request_matcher,
+                           &rm->server_registered_method->matcher,
                            rm->server_registered_method->payload_handling);
       return;
     }
@@ -642,7 +647,7 @@ static void start_new_rpc(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
         continue;
       }
       finish_start_new_rpc(exec_ctx, server, elem,
-                           &rm->server_registered_method->request_matcher,
+                           &rm->server_registered_method->matcher,
                            rm->server_registered_method->payload_handling);
       return;
     }
@@ -663,7 +668,7 @@ static int num_listeners(grpc_server *server) {
 
 static void done_shutdown_event(grpc_exec_ctx *exec_ctx, void *server,
                                 grpc_cq_completion *completion) {
-  server_unref(exec_ctx, server);
+  server_unref(exec_ctx, (grpc_server *)server);
 }
 
 static int num_channels(grpc_server *server) {
@@ -686,9 +691,9 @@ static void kill_pending_work_locked(grpc_exec_ctx *exec_ctx,
         exec_ctx, &server->unregistered_request_matcher);
     for (registered_method *rm = server->registered_methods; rm;
          rm = rm->next) {
-      request_matcher_kill_requests(exec_ctx, server, &rm->request_matcher,
+      request_matcher_kill_requests(exec_ctx, server, &rm->matcher,
                                     GRPC_ERROR_REF(error));
-      request_matcher_zombify_all_pending_calls(exec_ctx, &rm->request_matcher);
+      request_matcher_zombify_all_pending_calls(exec_ctx, &rm->matcher);
     }
   }
   GRPC_ERROR_UNREF(error);
@@ -732,8 +737,8 @@ static void maybe_finish_shutdown(grpc_exec_ctx *exec_ctx,
 
 static void server_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
                                             grpc_error *error) {
-  grpc_call_element *elem = ptr;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)ptr;
+  call_data *calld = (call_data *)elem->call_data;
   gpr_timespec op_deadline;
 
   if (error == GRPC_ERROR_NONE) {
@@ -771,7 +776,7 @@ static void server_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
 
 static void server_mutate_op(grpc_call_element *elem,
                              grpc_transport_stream_op_batch *op) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   if (op->recv_initial_metadata) {
     GPR_ASSERT(op->payload->recv_initial_metadata.recv_flags == NULL);
@@ -789,15 +794,14 @@ static void server_mutate_op(grpc_call_element *elem,
 static void server_start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *op) {
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
   server_mutate_op(elem, op);
   grpc_call_next_op(exec_ctx, elem, op);
 }
 
 static void got_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
                                  grpc_error *error) {
-  grpc_call_element *elem = ptr;
-  call_data *calld = elem->call_data;
+  grpc_call_element *elem = (grpc_call_element *)ptr;
+  call_data *calld = (call_data *)elem->call_data;
   if (error == GRPC_ERROR_NONE) {
     start_new_rpc(exec_ctx, elem);
   } else {
@@ -823,7 +827,7 @@ static void got_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr,
 static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
                           grpc_transport *transport,
                           const void *transport_server_data) {
-  channel_data *chand = cd;
+  channel_data *chand = (channel_data *)cd;
   /* create a call */
   grpc_call_create_args args;
   memset(&args, 0, sizeof(args));
@@ -839,7 +843,7 @@ static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
     GRPC_ERROR_UNREF(error);
     return;
   }
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   grpc_op op;
   memset(&op, 0, sizeof(op));
   op.op = GRPC_OP_RECV_INITIAL_METADATA;
@@ -853,7 +857,7 @@ static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd,
 
 static void channel_connectivity_changed(grpc_exec_ctx *exec_ctx, void *cd,
                                          grpc_error *error) {
-  channel_data *chand = cd;
+  channel_data *chand = (channel_data *)cd;
   grpc_server *server = chand->server;
   if (chand->connectivity_state != GRPC_CHANNEL_SHUTDOWN) {
     grpc_transport_op *op = grpc_make_transport_op(NULL);
@@ -874,8 +878,8 @@ static void channel_connectivity_changed(grpc_exec_ctx *exec_ctx, void *cd,
 static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
                                   grpc_call_element *elem,
                                   const grpc_call_element_args *args) {
-  call_data *calld = elem->call_data;
-  channel_data *chand = elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   memset(calld, 0, sizeof(call_data));
   calld->deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
   calld->call = grpc_call_from_top_element(elem);
@@ -892,8 +896,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               grpc_closure *ignored) {
-  channel_data *chand = elem->channel_data;
-  call_data *calld = elem->call_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
+  call_data *calld = (call_data *)elem->call_data;
 
   GPR_ASSERT(calld->state != PENDING);
 
@@ -914,7 +918,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_channel_element *elem,
                                      grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   GPR_ASSERT(args->is_first);
   GPR_ASSERT(!args->is_last);
   chand->server = NULL;
@@ -931,7 +935,7 @@ static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {
   size_t i;
-  channel_data *chand = elem->channel_data;
+  channel_data *chand = (channel_data *)elem->channel_data;
   if (chand->registered_methods) {
     for (i = 0; i < chand->registered_method_slots; i++) {
       grpc_slice_unref_internal(exec_ctx, chand->registered_methods[i].method);
@@ -962,7 +966,6 @@ const grpc_channel_filter grpc_server_top_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "server",
 };
@@ -978,8 +981,8 @@ static void register_completion_queue(grpc_server *server,
 
   GRPC_CQ_INTERNAL_REF(cq, "server");
   n = server->cq_count++;
-  server->cqs = gpr_realloc(server->cqs,
-                            server->cq_count * sizeof(grpc_completion_queue *));
+  server->cqs = (grpc_completion_queue **)gpr_realloc(
+      server->cqs, server->cq_count * sizeof(grpc_completion_queue *));
   server->cqs[n] = cq;
 }
 
@@ -1004,7 +1007,7 @@ void grpc_server_register_completion_queue(grpc_server *server,
 grpc_server *grpc_server_create(const grpc_channel_args *args, void *reserved) {
   GRPC_API_TRACE("grpc_server_create(%p, %p)", 2, (args, reserved));
 
-  grpc_server *server = gpr_zalloc(sizeof(grpc_server));
+  grpc_server *server = (grpc_server *)gpr_zalloc(sizeof(grpc_server));
 
   gpr_mu_init(&server->mu_global);
   gpr_mu_init(&server->mu_call);
@@ -1055,7 +1058,7 @@ void *grpc_server_register_method(
             flags);
     return NULL;
   }
-  m = gpr_zalloc(sizeof(registered_method));
+  m = (registered_method *)gpr_zalloc(sizeof(registered_method));
   m->method = gpr_strdup(method);
   m->host = gpr_strdup(host);
   m->next = server->registered_methods;
@@ -1067,7 +1070,7 @@ void *grpc_server_register_method(
 
 static void start_listeners(grpc_exec_ctx *exec_ctx, void *s,
                             grpc_error *error) {
-  grpc_server *server = s;
+  grpc_server *server = (grpc_server *)s;
   for (listener *l = server->listeners; l; l = l->next) {
     l->start(exec_ctx, server, l->arg, server->pollsets, server->pollset_count);
   }
@@ -1088,11 +1091,12 @@ void grpc_server_start(grpc_server *server) {
 
   server->started = true;
   server->pollset_count = 0;
-  server->pollsets = gpr_malloc(sizeof(grpc_pollset *) * server->cq_count);
-  server->request_freelist_per_cq =
-      gpr_malloc(sizeof(*server->request_freelist_per_cq) * server->cq_count);
-  server->requested_calls_per_cq =
-      gpr_malloc(sizeof(*server->requested_calls_per_cq) * server->cq_count);
+  server->pollsets =
+      (grpc_pollset **)gpr_malloc(sizeof(grpc_pollset *) * server->cq_count);
+  server->request_freelist_per_cq = (gpr_stack_lockfree **)gpr_malloc(
+      sizeof(*server->request_freelist_per_cq) * server->cq_count);
+  server->requested_calls_per_cq = (requested_call **)gpr_malloc(
+      sizeof(*server->requested_calls_per_cq) * server->cq_count);
   for (i = 0; i < server->cq_count; i++) {
     if (grpc_cq_can_listen(server->cqs[i])) {
       server->pollsets[server->pollset_count++] =
@@ -1103,22 +1107,24 @@ void grpc_server_start(grpc_server *server) {
     for (int j = 0; j < server->max_requested_calls_per_cq; j++) {
       gpr_stack_lockfree_push(server->request_freelist_per_cq[i], j);
     }
-    server->requested_calls_per_cq[i] =
-        gpr_malloc((size_t)server->max_requested_calls_per_cq *
-                   sizeof(*server->requested_calls_per_cq[i]));
+    server->requested_calls_per_cq[i] = (requested_call *)gpr_malloc(
+        (size_t)server->max_requested_calls_per_cq *
+        sizeof(*server->requested_calls_per_cq[i]));
   }
   request_matcher_init(&server->unregistered_request_matcher,
                        (size_t)server->max_requested_calls_per_cq, server);
   for (registered_method *rm = server->registered_methods; rm; rm = rm->next) {
-    request_matcher_init(&rm->request_matcher,
+    request_matcher_init(&rm->matcher,
                          (size_t)server->max_requested_calls_per_cq, server);
   }
 
   server_ref(server);
   server->starting = true;
-  GRPC_CLOSURE_SCHED(&exec_ctx, GRPC_CLOSURE_CREATE(start_listeners, server,
-                                                    grpc_executor_scheduler),
-                     GRPC_ERROR_NONE);
+  GRPC_CLOSURE_SCHED(
+      &exec_ctx,
+      GRPC_CLOSURE_CREATE(start_listeners, server,
+                          grpc_executor_scheduler(GRPC_EXECUTOR_SHORT)),
+      GRPC_ERROR_NONE);
 
   grpc_exec_ctx_finish(&exec_ctx);
 }
@@ -1173,7 +1179,7 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
   if (num_registered_methods > 0) {
     slots = 2 * num_registered_methods;
     alloc = sizeof(channel_registered_method) * slots;
-    chand->registered_methods = gpr_zalloc(alloc);
+    chand->registered_methods = (channel_registered_method *)gpr_zalloc(alloc);
     for (rm = s->registered_methods; rm; rm = rm->next) {
       grpc_slice host;
       bool has_host;
@@ -1234,7 +1240,7 @@ void done_published_shutdown(grpc_exec_ctx *exec_ctx, void *done_arg,
 
 static void listener_destroy_done(grpc_exec_ctx *exec_ctx, void *s,
                                   grpc_error *error) {
-  grpc_server *server = s;
+  grpc_server *server = (grpc_server *)s;
   gpr_mu_lock(&server->mu_global);
   server->listeners_destroyed++;
   maybe_finish_shutdown(exec_ctx, server);
@@ -1261,14 +1267,15 @@ void grpc_server_shutdown_and_notify(grpc_server *server,
   /* stay locked, and gather up some stuff to do */
   GPR_ASSERT(grpc_cq_begin_op(cq, tag));
   if (server->shutdown_published) {
-    grpc_cq_end_op(&exec_ctx, cq, tag, GRPC_ERROR_NONE, done_published_shutdown,
-                   NULL, gpr_malloc(sizeof(grpc_cq_completion)));
+    grpc_cq_end_op(
+        &exec_ctx, cq, tag, GRPC_ERROR_NONE, done_published_shutdown, NULL,
+        (grpc_cq_completion *)gpr_malloc(sizeof(grpc_cq_completion)));
     gpr_mu_unlock(&server->mu_global);
     goto done;
   }
-  server->shutdown_tags =
-      gpr_realloc(server->shutdown_tags,
-                  sizeof(shutdown_tag) * (server->num_shutdown_tags + 1));
+  server->shutdown_tags = (shutdown_tag *)gpr_realloc(
+      server->shutdown_tags,
+      sizeof(shutdown_tag) * (server->num_shutdown_tags + 1));
   sdt = &server->shutdown_tags[server->num_shutdown_tags++];
   sdt->tag = tag;
   sdt->cq = cq;
@@ -1351,7 +1358,7 @@ void grpc_server_add_listener(
                   grpc_pollset **pollsets, size_t pollset_count),
     void (*destroy)(grpc_exec_ctx *exec_ctx, grpc_server *server, void *arg,
                     grpc_closure *on_done)) {
-  listener *l = gpr_malloc(sizeof(listener));
+  listener *l = (listener *)gpr_malloc(sizeof(listener));
   l->arg = arg;
   l->start = start;
   l->destroy = destroy;
@@ -1384,7 +1391,7 @@ static grpc_call_error queue_call_request(grpc_exec_ctx *exec_ctx,
       rm = &server->unregistered_request_matcher;
       break;
     case REGISTERED_CALL:
-      rm = &rc->data.registered.registered_method->request_matcher;
+      rm = &rc->data.registered.method->matcher;
       break;
   }
   server->requested_calls_per_cq[cq_idx][request_id] = *rc;
@@ -1428,7 +1435,8 @@ grpc_call_error grpc_server_request_call(
     grpc_completion_queue *cq_for_notification, void *tag) {
   grpc_call_error error;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  requested_call *rc = gpr_malloc(sizeof(*rc));
+  requested_call *rc = (requested_call *)gpr_malloc(sizeof(*rc));
+  GRPC_STATS_INC_SERVER_REQUESTED_CALLS(&exec_ctx);
   GRPC_API_TRACE(
       "grpc_server_request_call("
       "server=%p, call=%p, details=%p, initial_metadata=%p, "
@@ -1473,8 +1481,9 @@ grpc_call_error grpc_server_request_registered_call(
     grpc_completion_queue *cq_for_notification, void *tag) {
   grpc_call_error error;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  requested_call *rc = gpr_malloc(sizeof(*rc));
-  registered_method *rm = rmp;
+  requested_call *rc = (requested_call *)gpr_malloc(sizeof(*rc));
+  registered_method *rm = (registered_method *)rmp;
+  GRPC_STATS_INC_SERVER_REQUESTED_CALLS(&exec_ctx);
   GRPC_API_TRACE(
       "grpc_server_request_registered_call("
       "server=%p, rmp=%p, call=%p, deadline=%p, initial_metadata=%p, "
@@ -1511,7 +1520,7 @@ grpc_call_error grpc_server_request_registered_call(
   rc->tag = tag;
   rc->cq_bound_to_call = cq_bound_to_call;
   rc->call = call;
-  rc->data.registered.registered_method = rm;
+  rc->data.registered.method = rm;
   rc->data.registered.deadline = deadline;
   rc->initial_metadata = initial_metadata;
   rc->data.registered.optional_payload = optional_payload;
diff --git a/src/core/lib/surface/version.c b/src/core/lib/surface/version.c
index 96c16105e7..fd6ea4daa9 100644
--- a/src/core/lib/surface/version.c
+++ b/src/core/lib/surface/version.c
@@ -21,6 +21,6 @@
 
 #include <grpc/grpc.h>
 
-const char *grpc_version_string(void) { return "4.0.0-dev"; }
+const char *grpc_version_string(void) { return "5.0.0-dev"; }
 
 const char *grpc_g_stands_for(void) { return "gambit"; }
diff --git a/src/core/lib/transport/byte_stream.c b/src/core/lib/transport/byte_stream.c
index fb03a10315..08f61629a9 100644
--- a/src/core/lib/transport/byte_stream.c
+++ b/src/core/lib/transport/byte_stream.c
@@ -85,6 +85,7 @@ static void slice_buffer_stream_shutdown(grpc_exec_ctx *exec_ctx,
 static void slice_buffer_stream_destroy(grpc_exec_ctx *exec_ctx,
                                         grpc_byte_stream *byte_stream) {
   grpc_slice_buffer_stream *stream = (grpc_slice_buffer_stream *)byte_stream;
+  grpc_slice_buffer_reset_and_unref_internal(exec_ctx, stream->backing_buffer);
   GRPC_ERROR_UNREF(stream->shutdown_error);
 }
 
diff --git a/src/core/lib/transport/byte_stream.h b/src/core/lib/transport/byte_stream.h
index 1e1e8310b8..be2a35213e 100644
--- a/src/core/lib/transport/byte_stream.h
+++ b/src/core/lib/transport/byte_stream.h
@@ -81,7 +81,9 @@ void grpc_byte_stream_destroy(grpc_exec_ctx *exec_ctx,
 
 // grpc_slice_buffer_stream
 //
-// A grpc_byte_stream that wraps a slice buffer.
+// A grpc_byte_stream that wraps a slice buffer.  The stream takes
+// ownership of the slices in the buffer, and on destruction will
+// reset the contents of the buffer.
 
 typedef struct grpc_slice_buffer_stream {
   grpc_byte_stream base;
diff --git a/src/core/lib/transport/connectivity_state.c b/src/core/lib/transport/connectivity_state.c
index 73a9178ae2..f328a6cdbb 100644
--- a/src/core/lib/transport/connectivity_state.c
+++ b/src/core/lib/transport/connectivity_state.c
@@ -148,7 +148,8 @@ bool grpc_connectivity_state_notify_on_state_change(
       GRPC_CLOSURE_SCHED(exec_ctx, notify,
                          GRPC_ERROR_REF(tracker->current_error));
     } else {
-      grpc_connectivity_state_watcher *w = gpr_malloc(sizeof(*w));
+      grpc_connectivity_state_watcher *w =
+          (grpc_connectivity_state_watcher *)gpr_malloc(sizeof(*w));
       w->current = current;
       w->notify = notify;
       w->next = tracker->watchers;
diff --git a/src/core/lib/transport/metadata.c b/src/core/lib/transport/metadata.c
index 2fea366072..188b485625 100644
--- a/src/core/lib/transport/metadata.c
+++ b/src/core/lib/transport/metadata.c
@@ -117,7 +117,8 @@ void grpc_mdctx_global_init(void) {
     shard->count = 0;
     gpr_atm_no_barrier_store(&shard->free_estimate, 0);
     shard->capacity = INITIAL_SHARD_CAPACITY;
-    shard->elems = gpr_zalloc(sizeof(*shard->elems) * shard->capacity);
+    shard->elems = (interned_metadata **)gpr_zalloc(sizeof(*shard->elems) *
+                                                    shard->capacity);
   }
 }
 
@@ -204,7 +205,8 @@ static void grow_mdtab(mdtab_shard *shard) {
 
   GPR_TIMER_BEGIN("grow_mdtab", 0);
 
-  mdtab = gpr_zalloc(sizeof(interned_metadata *) * capacity);
+  mdtab =
+      (interned_metadata **)gpr_zalloc(sizeof(interned_metadata *) * capacity);
 
   for (i = 0; i < shard->capacity; i++) {
     for (md = shard->elems[i]; md; md = next) {
@@ -243,7 +245,8 @@ grpc_mdelem grpc_mdelem_create(
                               GRPC_MDELEM_STORAGE_EXTERNAL);
     }
 
-    allocated_metadata *allocated = gpr_malloc(sizeof(*allocated));
+    allocated_metadata *allocated =
+        (allocated_metadata *)gpr_malloc(sizeof(*allocated));
     allocated->key = grpc_slice_ref_internal(key);
     allocated->value = grpc_slice_ref_internal(value);
     gpr_atm_rel_store(&allocated->refcnt, 1);
@@ -292,7 +295,7 @@ grpc_mdelem grpc_mdelem_create(
   }
 
   /* not found: create a new pair */
-  md = gpr_malloc(sizeof(interned_metadata));
+  md = (interned_metadata *)gpr_malloc(sizeof(interned_metadata));
   gpr_atm_rel_store(&md->refcnt, 1);
   md->key = grpc_slice_ref_internal(key);
   md->value = grpc_slice_ref_internal(value);
diff --git a/src/core/lib/transport/metadata_batch.c b/src/core/lib/transport/metadata_batch.c
index 8f24b8527c..54388bdcda 100644
--- a/src/core/lib/transport/metadata_batch.c
+++ b/src/core/lib/transport/metadata_batch.c
@@ -105,6 +105,7 @@ static grpc_error *maybe_link_callout(grpc_metadata_batch *batch,
     return GRPC_ERROR_NONE;
   }
   if (batch->idx.array[idx] == NULL) {
+    if (grpc_static_callout_is_default[idx]) ++batch->list.default_count;
     batch->idx.array[idx] = storage;
     return GRPC_ERROR_NONE;
   }
@@ -120,6 +121,7 @@ static void maybe_unlink_callout(grpc_metadata_batch *batch,
   if (idx == GRPC_BATCH_CALLOUTS_COUNT) {
     return;
   }
+  if (grpc_static_callout_is_default[idx]) --batch->list.default_count;
   GPR_ASSERT(batch->idx.array[idx] != NULL);
   batch->idx.array[idx] = NULL;
 }
@@ -231,32 +233,32 @@ void grpc_metadata_batch_remove(grpc_exec_ctx *exec_ctx,
 void grpc_metadata_batch_set_value(grpc_exec_ctx *exec_ctx,
                                    grpc_linked_mdelem *storage,
                                    grpc_slice value) {
-  grpc_mdelem old = storage->md;
-  grpc_mdelem new = grpc_mdelem_from_slices(
-      exec_ctx, grpc_slice_ref_internal(GRPC_MDKEY(old)), value);
-  storage->md = new;
-  GRPC_MDELEM_UNREF(exec_ctx, old);
+  grpc_mdelem old_mdelem = storage->md;
+  grpc_mdelem new_mdelem = grpc_mdelem_from_slices(
+      exec_ctx, grpc_slice_ref_internal(GRPC_MDKEY(old_mdelem)), value);
+  storage->md = new_mdelem;
+  GRPC_MDELEM_UNREF(exec_ctx, old_mdelem);
 }
 
 grpc_error *grpc_metadata_batch_substitute(grpc_exec_ctx *exec_ctx,
                                            grpc_metadata_batch *batch,
                                            grpc_linked_mdelem *storage,
-                                           grpc_mdelem new) {
+                                           grpc_mdelem new_mdelem) {
   assert_valid_callouts(exec_ctx, batch);
   grpc_error *error = GRPC_ERROR_NONE;
-  grpc_mdelem old = storage->md;
-  if (!grpc_slice_eq(GRPC_MDKEY(new), GRPC_MDKEY(old))) {
+  grpc_mdelem old_mdelem = storage->md;
+  if (!grpc_slice_eq(GRPC_MDKEY(new_mdelem), GRPC_MDKEY(old_mdelem))) {
     maybe_unlink_callout(batch, storage);
-    storage->md = new;
+    storage->md = new_mdelem;
     error = maybe_link_callout(batch, storage);
     if (error != GRPC_ERROR_NONE) {
       unlink_storage(&batch->list, storage);
       GRPC_MDELEM_UNREF(exec_ctx, storage->md);
     }
   } else {
-    storage->md = new;
+    storage->md = new_mdelem;
   }
-  GRPC_MDELEM_UNREF(exec_ctx, old);
+  GRPC_MDELEM_UNREF(exec_ctx, old_mdelem);
   assert_valid_callouts(exec_ctx, batch);
   return error;
 }
@@ -300,12 +302,12 @@ grpc_error *grpc_metadata_batch_filter(grpc_exec_ctx *exec_ctx,
   grpc_error *error = GRPC_ERROR_NONE;
   while (l) {
     grpc_linked_mdelem *next = l->next;
-    grpc_filtered_mdelem new = func(exec_ctx, user_data, l->md);
-    add_error(&error, new.error, composite_error_string);
-    if (GRPC_MDISNULL(new.md)) {
+    grpc_filtered_mdelem new_mdelem = func(exec_ctx, user_data, l->md);
+    add_error(&error, new_mdelem.error, composite_error_string);
+    if (GRPC_MDISNULL(new_mdelem.md)) {
       grpc_metadata_batch_remove(exec_ctx, batch, l);
-    } else if (new.md.payload != l->md.payload) {
-      grpc_metadata_batch_substitute(exec_ctx, batch, l, new.md);
+    } else if (new_mdelem.md.payload != l->md.payload) {
+      grpc_metadata_batch_substitute(exec_ctx, batch, l, new_mdelem.md);
     }
     l = next;
   }
diff --git a/src/core/lib/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h
index 1b11a3e252..57d298c75c 100644
--- a/src/core/lib/transport/metadata_batch.h
+++ b/src/core/lib/transport/metadata_batch.h
@@ -41,6 +41,7 @@ typedef struct grpc_linked_mdelem {
 
 typedef struct grpc_mdelem_list {
   size_t count;
+  size_t default_count;  // Number of default keys.
   grpc_linked_mdelem *head;
   grpc_linked_mdelem *tail;
 } grpc_mdelem_list;
diff --git a/src/core/lib/transport/service_config.c b/src/core/lib/transport/service_config.c
index 0379d0010d..070a13a2b4 100644
--- a/src/core/lib/transport/service_config.c
+++ b/src/core/lib/transport/service_config.c
@@ -59,7 +59,8 @@ struct grpc_service_config {
 };
 
 grpc_service_config* grpc_service_config_create(const char* json_string) {
-  grpc_service_config* service_config = gpr_malloc(sizeof(*service_config));
+  grpc_service_config* service_config =
+      (grpc_service_config*)gpr_malloc(sizeof(*service_config));
   service_config->json_string = gpr_strdup(json_string);
   service_config->json_tree =
       grpc_json_parse_string(service_config->json_string);
@@ -198,7 +199,8 @@ grpc_slice_hash_table* grpc_service_config_create_method_config_table(
         num_entries += count_names_in_method_config_json(method);
       }
       // Populate method config table entries.
-      entries = gpr_malloc(num_entries * sizeof(grpc_slice_hash_table_entry));
+      entries = (grpc_slice_hash_table_entry*)gpr_malloc(
+          num_entries * sizeof(grpc_slice_hash_table_entry));
       size_t idx = 0;
       for (grpc_json* method = field->child; method != NULL;
            method = method->next) {
@@ -230,7 +232,7 @@ void* grpc_method_config_table_get(grpc_exec_ctx* exec_ctx,
     char* path_str = grpc_slice_to_c_string(path);
     const char* sep = strrchr(path_str, '/') + 1;
     const size_t len = (size_t)(sep - path_str);
-    char* buf = gpr_malloc(len + 2);  // '*' and NUL
+    char* buf = (char*)gpr_malloc(len + 2);  // '*' and NUL
     memcpy(buf, path_str, len);
     buf[len] = '*';
     buf[len + 1] = '\0';
diff --git a/src/core/lib/transport/static_metadata.c b/src/core/lib/transport/static_metadata.c
index 2388f19f81..472cf888ea 100644
--- a/src/core/lib/transport/static_metadata.c
+++ b/src/core/lib/transport/static_metadata.c
@@ -40,65 +40,68 @@ static uint8_t g_bytes[] = {
     114, 45,  115, 116, 97,  116, 115, 45,  98,  105, 110, 103, 114, 112, 99,
     45,  116, 97,  103, 115, 45,  98,  105, 110, 103, 114, 112, 99,  45,  116,
     114, 97,  99,  101, 45,  98,  105, 110, 99,  111, 110, 116, 101, 110, 116,
-    45,  116, 121, 112, 101, 103, 114, 112, 99,  45,  105, 110, 116, 101, 114,
-    110, 97,  108, 45,  101, 110, 99,  111, 100, 105, 110, 103, 45,  114, 101,
-    113, 117, 101, 115, 116, 117, 115, 101, 114, 45,  97,  103, 101, 110, 116,
-    104, 111, 115, 116, 108, 98,  45,  116, 111, 107, 101, 110, 103, 114, 112,
-    99,  45,  116, 105, 109, 101, 111, 117, 116, 103, 114, 112, 99,  46,  119,
-    97,  105, 116, 95,  102, 111, 114, 95,  114, 101, 97,  100, 121, 103, 114,
-    112, 99,  46,  116, 105, 109, 101, 111, 117, 116, 103, 114, 112, 99,  46,
-    109, 97,  120, 95,  114, 101, 113, 117, 101, 115, 116, 95,  109, 101, 115,
-    115, 97,  103, 101, 95,  98,  121, 116, 101, 115, 103, 114, 112, 99,  46,
-    109, 97,  120, 95,  114, 101, 115, 112, 111, 110, 115, 101, 95,  109, 101,
-    115, 115, 97,  103, 101, 95,  98,  121, 116, 101, 115, 47,  103, 114, 112,
-    99,  46,  108, 98,  46,  118, 49,  46,  76,  111, 97,  100, 66,  97,  108,
-    97,  110, 99,  101, 114, 47,  66,  97,  108, 97,  110, 99,  101, 76,  111,
-    97,  100, 48,  49,  50,  105, 100, 101, 110, 116, 105, 116, 121, 103, 122,
-    105, 112, 100, 101, 102, 108, 97,  116, 101, 116, 114, 97,  105, 108, 101,
-    114, 115, 97,  112, 112, 108, 105, 99,  97,  116, 105, 111, 110, 47,  103,
-    114, 112, 99,  80,  79,  83,  84,  50,  48,  48,  52,  48,  52,  104, 116,
-    116, 112, 104, 116, 116, 112, 115, 103, 114, 112, 99,  71,  69,  84,  80,
-    85,  84,  47,  47,  105, 110, 100, 101, 120, 46,  104, 116, 109, 108, 50,
-    48,  52,  50,  48,  54,  51,  48,  52,  52,  48,  48,  53,  48,  48,  97,
-    99,  99,  101, 112, 116, 45,  99,  104, 97,  114, 115, 101, 116, 97,  99,
-    99,  101, 112, 116, 45,  101, 110, 99,  111, 100, 105, 110, 103, 103, 122,
-    105, 112, 44,  32,  100, 101, 102, 108, 97,  116, 101, 97,  99,  99,  101,
-    112, 116, 45,  108, 97,  110, 103, 117, 97,  103, 101, 97,  99,  99,  101,
-    112, 116, 45,  114, 97,  110, 103, 101, 115, 97,  99,  99,  101, 112, 116,
-    97,  99,  99,  101, 115, 115, 45,  99,  111, 110, 116, 114, 111, 108, 45,
-    97,  108, 108, 111, 119, 45,  111, 114, 105, 103, 105, 110, 97,  103, 101,
-    97,  108, 108, 111, 119, 97,  117, 116, 104, 111, 114, 105, 122, 97,  116,
-    105, 111, 110, 99,  97,  99,  104, 101, 45,  99,  111, 110, 116, 114, 111,
-    108, 99,  111, 110, 116, 101, 110, 116, 45,  100, 105, 115, 112, 111, 115,
-    105, 116, 105, 111, 110, 99,  111, 110, 116, 101, 110, 116, 45,  101, 110,
-    99,  111, 100, 105, 110, 103, 99,  111, 110, 116, 101, 110, 116, 45,  108,
-    97,  110, 103, 117, 97,  103, 101, 99,  111, 110, 116, 101, 110, 116, 45,
-    108, 101, 110, 103, 116, 104, 99,  111, 110, 116, 101, 110, 116, 45,  108,
-    111, 99,  97,  116, 105, 111, 110, 99,  111, 110, 116, 101, 110, 116, 45,
-    114, 97,  110, 103, 101, 99,  111, 111, 107, 105, 101, 100, 97,  116, 101,
-    101, 116, 97,  103, 101, 120, 112, 101, 99,  116, 101, 120, 112, 105, 114,
-    101, 115, 102, 114, 111, 109, 105, 102, 45,  109, 97,  116, 99,  104, 105,
-    102, 45,  109, 111, 100, 105, 102, 105, 101, 100, 45,  115, 105, 110, 99,
-    101, 105, 102, 45,  110, 111, 110, 101, 45,  109, 97,  116, 99,  104, 105,
-    102, 45,  114, 97,  110, 103, 101, 105, 102, 45,  117, 110, 109, 111, 100,
-    105, 102, 105, 101, 100, 45,  115, 105, 110, 99,  101, 108, 97,  115, 116,
-    45,  109, 111, 100, 105, 102, 105, 101, 100, 108, 98,  45,  99,  111, 115,
-    116, 45,  98,  105, 110, 108, 105, 110, 107, 108, 111, 99,  97,  116, 105,
-    111, 110, 109, 97,  120, 45,  102, 111, 114, 119, 97,  114, 100, 115, 112,
-    114, 111, 120, 121, 45,  97,  117, 116, 104, 101, 110, 116, 105, 99,  97,
-    116, 101, 112, 114, 111, 120, 121, 45,  97,  117, 116, 104, 111, 114, 105,
-    122, 97,  116, 105, 111, 110, 114, 97,  110, 103, 101, 114, 101, 102, 101,
-    114, 101, 114, 114, 101, 102, 114, 101, 115, 104, 114, 101, 116, 114, 121,
-    45,  97,  102, 116, 101, 114, 115, 101, 114, 118, 101, 114, 115, 101, 116,
-    45,  99,  111, 111, 107, 105, 101, 115, 116, 114, 105, 99,  116, 45,  116,
-    114, 97,  110, 115, 112, 111, 114, 116, 45,  115, 101, 99,  117, 114, 105,
-    116, 121, 116, 114, 97,  110, 115, 102, 101, 114, 45,  101, 110, 99,  111,
-    100, 105, 110, 103, 118, 97,  114, 121, 118, 105, 97,  119, 119, 119, 45,
-    97,  117, 116, 104, 101, 110, 116, 105, 99,  97,  116, 101, 105, 100, 101,
-    110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116, 101, 105, 100,
-    101, 110, 116, 105, 116, 121, 44,  103, 122, 105, 112, 100, 101, 102, 108,
-    97,  116, 101, 44,  103, 122, 105, 112, 105, 100, 101, 110, 116, 105, 116,
-    121, 44,  100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105, 112};
+    45,  116, 121, 112, 101, 99,  111, 110, 116, 101, 110, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 97,  99,  99,  101, 112, 116, 45,  101, 110,
+    99,  111, 100, 105, 110, 103, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  101, 110, 99,  111, 100, 105, 110, 103, 45,  114,
+    101, 113, 117, 101, 115, 116, 103, 114, 112, 99,  45,  105, 110, 116, 101,
+    114, 110, 97,  108, 45,  115, 116, 114, 101, 97,  109, 45,  101, 110, 99,
+    111, 100, 105, 110, 103, 45,  114, 101, 113, 117, 101, 115, 116, 117, 115,
+    101, 114, 45,  97,  103, 101, 110, 116, 104, 111, 115, 116, 108, 98,  45,
+    116, 111, 107, 101, 110, 103, 114, 112, 99,  45,  116, 105, 109, 101, 111,
+    117, 116, 103, 114, 112, 99,  46,  119, 97,  105, 116, 95,  102, 111, 114,
+    95,  114, 101, 97,  100, 121, 103, 114, 112, 99,  46,  116, 105, 109, 101,
+    111, 117, 116, 103, 114, 112, 99,  46,  109, 97,  120, 95,  114, 101, 113,
+    117, 101, 115, 116, 95,  109, 101, 115, 115, 97,  103, 101, 95,  98,  121,
+    116, 101, 115, 103, 114, 112, 99,  46,  109, 97,  120, 95,  114, 101, 115,
+    112, 111, 110, 115, 101, 95,  109, 101, 115, 115, 97,  103, 101, 95,  98,
+    121, 116, 101, 115, 47,  103, 114, 112, 99,  46,  108, 98,  46,  118, 49,
+    46,  76,  111, 97,  100, 66,  97,  108, 97,  110, 99,  101, 114, 47,  66,
+    97,  108, 97,  110, 99,  101, 76,  111, 97,  100, 48,  49,  50,  105, 100,
+    101, 110, 116, 105, 116, 121, 103, 122, 105, 112, 100, 101, 102, 108, 97,
+    116, 101, 116, 114, 97,  105, 108, 101, 114, 115, 97,  112, 112, 108, 105,
+    99,  97,  116, 105, 111, 110, 47,  103, 114, 112, 99,  80,  79,  83,  84,
+    50,  48,  48,  52,  48,  52,  104, 116, 116, 112, 104, 116, 116, 112, 115,
+    103, 114, 112, 99,  71,  69,  84,  80,  85,  84,  47,  47,  105, 110, 100,
+    101, 120, 46,  104, 116, 109, 108, 50,  48,  52,  50,  48,  54,  51,  48,
+    52,  52,  48,  48,  53,  48,  48,  97,  99,  99,  101, 112, 116, 45,  99,
+    104, 97,  114, 115, 101, 116, 103, 122, 105, 112, 44,  32,  100, 101, 102,
+    108, 97,  116, 101, 97,  99,  99,  101, 112, 116, 45,  108, 97,  110, 103,
+    117, 97,  103, 101, 97,  99,  99,  101, 112, 116, 45,  114, 97,  110, 103,
+    101, 115, 97,  99,  99,  101, 112, 116, 97,  99,  99,  101, 115, 115, 45,
+    99,  111, 110, 116, 114, 111, 108, 45,  97,  108, 108, 111, 119, 45,  111,
+    114, 105, 103, 105, 110, 97,  103, 101, 97,  108, 108, 111, 119, 97,  117,
+    116, 104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 99,  97,  99,  104,
+    101, 45,  99,  111, 110, 116, 114, 111, 108, 99,  111, 110, 116, 101, 110,
+    116, 45,  100, 105, 115, 112, 111, 115, 105, 116, 105, 111, 110, 99,  111,
+    110, 116, 101, 110, 116, 45,  108, 97,  110, 103, 117, 97,  103, 101, 99,
+    111, 110, 116, 101, 110, 116, 45,  108, 101, 110, 103, 116, 104, 99,  111,
+    110, 116, 101, 110, 116, 45,  108, 111, 99,  97,  116, 105, 111, 110, 99,
+    111, 110, 116, 101, 110, 116, 45,  114, 97,  110, 103, 101, 99,  111, 111,
+    107, 105, 101, 100, 97,  116, 101, 101, 116, 97,  103, 101, 120, 112, 101,
+    99,  116, 101, 120, 112, 105, 114, 101, 115, 102, 114, 111, 109, 105, 102,
+    45,  109, 97,  116, 99,  104, 105, 102, 45,  109, 111, 100, 105, 102, 105,
+    101, 100, 45,  115, 105, 110, 99,  101, 105, 102, 45,  110, 111, 110, 101,
+    45,  109, 97,  116, 99,  104, 105, 102, 45,  114, 97,  110, 103, 101, 105,
+    102, 45,  117, 110, 109, 111, 100, 105, 102, 105, 101, 100, 45,  115, 105,
+    110, 99,  101, 108, 97,  115, 116, 45,  109, 111, 100, 105, 102, 105, 101,
+    100, 108, 98,  45,  99,  111, 115, 116, 45,  98,  105, 110, 108, 105, 110,
+    107, 108, 111, 99,  97,  116, 105, 111, 110, 109, 97,  120, 45,  102, 111,
+    114, 119, 97,  114, 100, 115, 112, 114, 111, 120, 121, 45,  97,  117, 116,
+    104, 101, 110, 116, 105, 99,  97,  116, 101, 112, 114, 111, 120, 121, 45,
+    97,  117, 116, 104, 111, 114, 105, 122, 97,  116, 105, 111, 110, 114, 97,
+    110, 103, 101, 114, 101, 102, 101, 114, 101, 114, 114, 101, 102, 114, 101,
+    115, 104, 114, 101, 116, 114, 121, 45,  97,  102, 116, 101, 114, 115, 101,
+    114, 118, 101, 114, 115, 101, 116, 45,  99,  111, 111, 107, 105, 101, 115,
+    116, 114, 105, 99,  116, 45,  116, 114, 97,  110, 115, 112, 111, 114, 116,
+    45,  115, 101, 99,  117, 114, 105, 116, 121, 116, 114, 97,  110, 115, 102,
+    101, 114, 45,  101, 110, 99,  111, 100, 105, 110, 103, 118, 97,  114, 121,
+    118, 105, 97,  119, 119, 119, 45,  97,  117, 116, 104, 101, 110, 116, 105,
+    99,  97,  116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  100, 101,
+    102, 108, 97,  116, 101, 105, 100, 101, 110, 116, 105, 116, 121, 44,  103,
+    122, 105, 112, 100, 101, 102, 108, 97,  116, 101, 44,  103, 122, 105, 112,
+    105, 100, 101, 110, 116, 105, 116, 121, 44,  100, 101, 102, 108, 97,  116,
+    101, 44,  103, 122, 105, 112};
 
 static void static_ref(void *unused) {}
 static void static_unref(grpc_exec_ctx *exec_ctx, void *unused) {}
@@ -209,227 +212,129 @@ grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
     {&grpc_static_metadata_vtable, &static_sub_refcnt},
+    {&grpc_static_metadata_vtable, &static_sub_refcnt},
 };
 
 const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {
-    {.refcount = &grpc_static_metadata_refcounts[0],
-     .data.refcounted = {g_bytes + 0, 5}},
-    {.refcount = &grpc_static_metadata_refcounts[1],
-     .data.refcounted = {g_bytes + 5, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[2],
-     .data.refcounted = {g_bytes + 12, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[3],
-     .data.refcounted = {g_bytes + 19, 10}},
-    {.refcount = &grpc_static_metadata_refcounts[4],
-     .data.refcounted = {g_bytes + 29, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[5],
-     .data.refcounted = {g_bytes + 36, 2}},
-    {.refcount = &grpc_static_metadata_refcounts[6],
-     .data.refcounted = {g_bytes + 38, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[7],
-     .data.refcounted = {g_bytes + 50, 11}},
-    {.refcount = &grpc_static_metadata_refcounts[8],
-     .data.refcounted = {g_bytes + 61, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[9],
-     .data.refcounted = {g_bytes + 77, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[10],
-     .data.refcounted = {g_bytes + 90, 20}},
-    {.refcount = &grpc_static_metadata_refcounts[11],
-     .data.refcounted = {g_bytes + 110, 21}},
-    {.refcount = &grpc_static_metadata_refcounts[12],
-     .data.refcounted = {g_bytes + 131, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[13],
-     .data.refcounted = {g_bytes + 144, 14}},
-    {.refcount = &grpc_static_metadata_refcounts[14],
-     .data.refcounted = {g_bytes + 158, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[15],
-     .data.refcounted = {g_bytes + 170, 30}},
-    {.refcount = &grpc_static_metadata_refcounts[16],
-     .data.refcounted = {g_bytes + 200, 10}},
-    {.refcount = &grpc_static_metadata_refcounts[17],
-     .data.refcounted = {g_bytes + 210, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[18],
-     .data.refcounted = {g_bytes + 214, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[19],
-     .data.refcounted = {g_bytes + 222, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[20],
-     .data.refcounted = {g_bytes + 234, 0}},
-    {.refcount = &grpc_static_metadata_refcounts[21],
-     .data.refcounted = {g_bytes + 234, 19}},
-    {.refcount = &grpc_static_metadata_refcounts[22],
-     .data.refcounted = {g_bytes + 253, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[23],
-     .data.refcounted = {g_bytes + 265, 30}},
-    {.refcount = &grpc_static_metadata_refcounts[24],
-     .data.refcounted = {g_bytes + 295, 31}},
-    {.refcount = &grpc_static_metadata_refcounts[25],
-     .data.refcounted = {g_bytes + 326, 36}},
-    {.refcount = &grpc_static_metadata_refcounts[26],
-     .data.refcounted = {g_bytes + 362, 1}},
-    {.refcount = &grpc_static_metadata_refcounts[27],
-     .data.refcounted = {g_bytes + 363, 1}},
-    {.refcount = &grpc_static_metadata_refcounts[28],
-     .data.refcounted = {g_bytes + 364, 1}},
-    {.refcount = &grpc_static_metadata_refcounts[29],
-     .data.refcounted = {g_bytes + 365, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[30],
-     .data.refcounted = {g_bytes + 373, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[31],
-     .data.refcounted = {g_bytes + 377, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[32],
-     .data.refcounted = {g_bytes + 384, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[33],
-     .data.refcounted = {g_bytes + 392, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[34],
-     .data.refcounted = {g_bytes + 408, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[35],
-     .data.refcounted = {g_bytes + 412, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[36],
-     .data.refcounted = {g_bytes + 415, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[37],
-     .data.refcounted = {g_bytes + 418, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[38],
-     .data.refcounted = {g_bytes + 422, 5}},
-    {.refcount = &grpc_static_metadata_refcounts[39],
-     .data.refcounted = {g_bytes + 427, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[40],
-     .data.refcounted = {g_bytes + 431, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[41],
-     .data.refcounted = {g_bytes + 434, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[42],
-     .data.refcounted = {g_bytes + 437, 1}},
-    {.refcount = &grpc_static_metadata_refcounts[43],
-     .data.refcounted = {g_bytes + 438, 11}},
-    {.refcount = &grpc_static_metadata_refcounts[44],
-     .data.refcounted = {g_bytes + 449, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[45],
-     .data.refcounted = {g_bytes + 452, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[46],
-     .data.refcounted = {g_bytes + 455, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[47],
-     .data.refcounted = {g_bytes + 458, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[48],
-     .data.refcounted = {g_bytes + 461, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[49],
-     .data.refcounted = {g_bytes + 464, 14}},
-    {.refcount = &grpc_static_metadata_refcounts[50],
-     .data.refcounted = {g_bytes + 478, 15}},
-    {.refcount = &grpc_static_metadata_refcounts[51],
-     .data.refcounted = {g_bytes + 493, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[52],
-     .data.refcounted = {g_bytes + 506, 15}},
-    {.refcount = &grpc_static_metadata_refcounts[53],
-     .data.refcounted = {g_bytes + 521, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[54],
-     .data.refcounted = {g_bytes + 534, 6}},
-    {.refcount = &grpc_static_metadata_refcounts[55],
-     .data.refcounted = {g_bytes + 540, 27}},
-    {.refcount = &grpc_static_metadata_refcounts[56],
-     .data.refcounted = {g_bytes + 567, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[57],
-     .data.refcounted = {g_bytes + 570, 5}},
-    {.refcount = &grpc_static_metadata_refcounts[58],
-     .data.refcounted = {g_bytes + 575, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[59],
-     .data.refcounted = {g_bytes + 588, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[60],
-     .data.refcounted = {g_bytes + 601, 19}},
-    {.refcount = &grpc_static_metadata_refcounts[61],
-     .data.refcounted = {g_bytes + 620, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[62],
-     .data.refcounted = {g_bytes + 636, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[63],
-     .data.refcounted = {g_bytes + 652, 14}},
-    {.refcount = &grpc_static_metadata_refcounts[64],
-     .data.refcounted = {g_bytes + 666, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[65],
-     .data.refcounted = {g_bytes + 682, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[66],
-     .data.refcounted = {g_bytes + 695, 6}},
-    {.refcount = &grpc_static_metadata_refcounts[67],
-     .data.refcounted = {g_bytes + 701, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[68],
-     .data.refcounted = {g_bytes + 705, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[69],
-     .data.refcounted = {g_bytes + 709, 6}},
-    {.refcount = &grpc_static_metadata_refcounts[70],
-     .data.refcounted = {g_bytes + 715, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[71],
-     .data.refcounted = {g_bytes + 722, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[72],
-     .data.refcounted = {g_bytes + 726, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[73],
-     .data.refcounted = {g_bytes + 734, 17}},
-    {.refcount = &grpc_static_metadata_refcounts[74],
-     .data.refcounted = {g_bytes + 751, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[75],
-     .data.refcounted = {g_bytes + 764, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[76],
-     .data.refcounted = {g_bytes + 772, 19}},
-    {.refcount = &grpc_static_metadata_refcounts[77],
-     .data.refcounted = {g_bytes + 791, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[78],
-     .data.refcounted = {g_bytes + 804, 11}},
-    {.refcount = &grpc_static_metadata_refcounts[79],
-     .data.refcounted = {g_bytes + 815, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[80],
-     .data.refcounted = {g_bytes + 819, 8}},
-    {.refcount = &grpc_static_metadata_refcounts[81],
-     .data.refcounted = {g_bytes + 827, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[82],
-     .data.refcounted = {g_bytes + 839, 18}},
-    {.refcount = &grpc_static_metadata_refcounts[83],
-     .data.refcounted = {g_bytes + 857, 19}},
-    {.refcount = &grpc_static_metadata_refcounts[84],
-     .data.refcounted = {g_bytes + 876, 5}},
-    {.refcount = &grpc_static_metadata_refcounts[85],
-     .data.refcounted = {g_bytes + 881, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[86],
-     .data.refcounted = {g_bytes + 888, 7}},
-    {.refcount = &grpc_static_metadata_refcounts[87],
-     .data.refcounted = {g_bytes + 895, 11}},
-    {.refcount = &grpc_static_metadata_refcounts[88],
-     .data.refcounted = {g_bytes + 906, 6}},
-    {.refcount = &grpc_static_metadata_refcounts[89],
-     .data.refcounted = {g_bytes + 912, 10}},
-    {.refcount = &grpc_static_metadata_refcounts[90],
-     .data.refcounted = {g_bytes + 922, 25}},
-    {.refcount = &grpc_static_metadata_refcounts[91],
-     .data.refcounted = {g_bytes + 947, 17}},
-    {.refcount = &grpc_static_metadata_refcounts[92],
-     .data.refcounted = {g_bytes + 964, 4}},
-    {.refcount = &grpc_static_metadata_refcounts[93],
-     .data.refcounted = {g_bytes + 968, 3}},
-    {.refcount = &grpc_static_metadata_refcounts[94],
-     .data.refcounted = {g_bytes + 971, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[95],
-     .data.refcounted = {g_bytes + 987, 16}},
-    {.refcount = &grpc_static_metadata_refcounts[96],
-     .data.refcounted = {g_bytes + 1003, 13}},
-    {.refcount = &grpc_static_metadata_refcounts[97],
-     .data.refcounted = {g_bytes + 1016, 12}},
-    {.refcount = &grpc_static_metadata_refcounts[98],
-     .data.refcounted = {g_bytes + 1028, 21}},
+    {&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+    {&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+    {&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+    {&grpc_static_metadata_refcounts[3], {{g_bytes + 19, 10}}},
+    {&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+    {&grpc_static_metadata_refcounts[5], {{g_bytes + 36, 2}}},
+    {&grpc_static_metadata_refcounts[6], {{g_bytes + 38, 12}}},
+    {&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+    {&grpc_static_metadata_refcounts[8], {{g_bytes + 61, 16}}},
+    {&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+    {&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+    {&grpc_static_metadata_refcounts[11], {{g_bytes + 110, 21}}},
+    {&grpc_static_metadata_refcounts[12], {{g_bytes + 131, 13}}},
+    {&grpc_static_metadata_refcounts[13], {{g_bytes + 144, 14}}},
+    {&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+    {&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+    {&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+    {&grpc_static_metadata_refcounts[17], {{g_bytes + 201, 30}}},
+    {&grpc_static_metadata_refcounts[18], {{g_bytes + 231, 37}}},
+    {&grpc_static_metadata_refcounts[19], {{g_bytes + 268, 10}}},
+    {&grpc_static_metadata_refcounts[20], {{g_bytes + 278, 4}}},
+    {&grpc_static_metadata_refcounts[21], {{g_bytes + 282, 8}}},
+    {&grpc_static_metadata_refcounts[22], {{g_bytes + 290, 12}}},
+    {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}},
+    {&grpc_static_metadata_refcounts[24], {{g_bytes + 302, 19}}},
+    {&grpc_static_metadata_refcounts[25], {{g_bytes + 321, 12}}},
+    {&grpc_static_metadata_refcounts[26], {{g_bytes + 333, 30}}},
+    {&grpc_static_metadata_refcounts[27], {{g_bytes + 363, 31}}},
+    {&grpc_static_metadata_refcounts[28], {{g_bytes + 394, 36}}},
+    {&grpc_static_metadata_refcounts[29], {{g_bytes + 430, 1}}},
+    {&grpc_static_metadata_refcounts[30], {{g_bytes + 431, 1}}},
+    {&grpc_static_metadata_refcounts[31], {{g_bytes + 432, 1}}},
+    {&grpc_static_metadata_refcounts[32], {{g_bytes + 433, 8}}},
+    {&grpc_static_metadata_refcounts[33], {{g_bytes + 441, 4}}},
+    {&grpc_static_metadata_refcounts[34], {{g_bytes + 445, 7}}},
+    {&grpc_static_metadata_refcounts[35], {{g_bytes + 452, 8}}},
+    {&grpc_static_metadata_refcounts[36], {{g_bytes + 460, 16}}},
+    {&grpc_static_metadata_refcounts[37], {{g_bytes + 476, 4}}},
+    {&grpc_static_metadata_refcounts[38], {{g_bytes + 480, 3}}},
+    {&grpc_static_metadata_refcounts[39], {{g_bytes + 483, 3}}},
+    {&grpc_static_metadata_refcounts[40], {{g_bytes + 486, 4}}},
+    {&grpc_static_metadata_refcounts[41], {{g_bytes + 490, 5}}},
+    {&grpc_static_metadata_refcounts[42], {{g_bytes + 495, 4}}},
+    {&grpc_static_metadata_refcounts[43], {{g_bytes + 499, 3}}},
+    {&grpc_static_metadata_refcounts[44], {{g_bytes + 502, 3}}},
+    {&grpc_static_metadata_refcounts[45], {{g_bytes + 505, 1}}},
+    {&grpc_static_metadata_refcounts[46], {{g_bytes + 506, 11}}},
+    {&grpc_static_metadata_refcounts[47], {{g_bytes + 517, 3}}},
+    {&grpc_static_metadata_refcounts[48], {{g_bytes + 520, 3}}},
+    {&grpc_static_metadata_refcounts[49], {{g_bytes + 523, 3}}},
+    {&grpc_static_metadata_refcounts[50], {{g_bytes + 526, 3}}},
+    {&grpc_static_metadata_refcounts[51], {{g_bytes + 529, 3}}},
+    {&grpc_static_metadata_refcounts[52], {{g_bytes + 532, 14}}},
+    {&grpc_static_metadata_refcounts[53], {{g_bytes + 546, 13}}},
+    {&grpc_static_metadata_refcounts[54], {{g_bytes + 559, 15}}},
+    {&grpc_static_metadata_refcounts[55], {{g_bytes + 574, 13}}},
+    {&grpc_static_metadata_refcounts[56], {{g_bytes + 587, 6}}},
+    {&grpc_static_metadata_refcounts[57], {{g_bytes + 593, 27}}},
+    {&grpc_static_metadata_refcounts[58], {{g_bytes + 620, 3}}},
+    {&grpc_static_metadata_refcounts[59], {{g_bytes + 623, 5}}},
+    {&grpc_static_metadata_refcounts[60], {{g_bytes + 628, 13}}},
+    {&grpc_static_metadata_refcounts[61], {{g_bytes + 641, 13}}},
+    {&grpc_static_metadata_refcounts[62], {{g_bytes + 654, 19}}},
+    {&grpc_static_metadata_refcounts[63], {{g_bytes + 673, 16}}},
+    {&grpc_static_metadata_refcounts[64], {{g_bytes + 689, 14}}},
+    {&grpc_static_metadata_refcounts[65], {{g_bytes + 703, 16}}},
+    {&grpc_static_metadata_refcounts[66], {{g_bytes + 719, 13}}},
+    {&grpc_static_metadata_refcounts[67], {{g_bytes + 732, 6}}},
+    {&grpc_static_metadata_refcounts[68], {{g_bytes + 738, 4}}},
+    {&grpc_static_metadata_refcounts[69], {{g_bytes + 742, 4}}},
+    {&grpc_static_metadata_refcounts[70], {{g_bytes + 746, 6}}},
+    {&grpc_static_metadata_refcounts[71], {{g_bytes + 752, 7}}},
+    {&grpc_static_metadata_refcounts[72], {{g_bytes + 759, 4}}},
+    {&grpc_static_metadata_refcounts[73], {{g_bytes + 763, 8}}},
+    {&grpc_static_metadata_refcounts[74], {{g_bytes + 771, 17}}},
+    {&grpc_static_metadata_refcounts[75], {{g_bytes + 788, 13}}},
+    {&grpc_static_metadata_refcounts[76], {{g_bytes + 801, 8}}},
+    {&grpc_static_metadata_refcounts[77], {{g_bytes + 809, 19}}},
+    {&grpc_static_metadata_refcounts[78], {{g_bytes + 828, 13}}},
+    {&grpc_static_metadata_refcounts[79], {{g_bytes + 841, 11}}},
+    {&grpc_static_metadata_refcounts[80], {{g_bytes + 852, 4}}},
+    {&grpc_static_metadata_refcounts[81], {{g_bytes + 856, 8}}},
+    {&grpc_static_metadata_refcounts[82], {{g_bytes + 864, 12}}},
+    {&grpc_static_metadata_refcounts[83], {{g_bytes + 876, 18}}},
+    {&grpc_static_metadata_refcounts[84], {{g_bytes + 894, 19}}},
+    {&grpc_static_metadata_refcounts[85], {{g_bytes + 913, 5}}},
+    {&grpc_static_metadata_refcounts[86], {{g_bytes + 918, 7}}},
+    {&grpc_static_metadata_refcounts[87], {{g_bytes + 925, 7}}},
+    {&grpc_static_metadata_refcounts[88], {{g_bytes + 932, 11}}},
+    {&grpc_static_metadata_refcounts[89], {{g_bytes + 943, 6}}},
+    {&grpc_static_metadata_refcounts[90], {{g_bytes + 949, 10}}},
+    {&grpc_static_metadata_refcounts[91], {{g_bytes + 959, 25}}},
+    {&grpc_static_metadata_refcounts[92], {{g_bytes + 984, 17}}},
+    {&grpc_static_metadata_refcounts[93], {{g_bytes + 1001, 4}}},
+    {&grpc_static_metadata_refcounts[94], {{g_bytes + 1005, 3}}},
+    {&grpc_static_metadata_refcounts[95], {{g_bytes + 1008, 16}}},
+    {&grpc_static_metadata_refcounts[96], {{g_bytes + 1024, 16}}},
+    {&grpc_static_metadata_refcounts[97], {{g_bytes + 1040, 13}}},
+    {&grpc_static_metadata_refcounts[98], {{g_bytes + 1053, 12}}},
+    {&grpc_static_metadata_refcounts[99], {{g_bytes + 1065, 21}}},
 };
 
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8};
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 4, 6, 6, 8, 8, 2, 4, 4};
 
 static const int8_t elems_r[] = {
-    10,  8,   -3,  0,   9,  21, -77, 22,  0,   10, -7,  0,   0,   0,
-    14,  0,   13,  12,  11, 0,  0,   0,   0,   0,  0,   0,   0,   0,
-    0,   0,   0,   0,   0,  0,  0,   0,   0,   0,  0,   0,   0,   0,
-    0,   0,   0,   0,   0,  0,  0,   -50, -51, 16, -53, -54, -55, -56,
-    -56, -57, -58, -59, 0,  37, 36,  35,  34,  33, 32,  31,  30,  29,
-    28,  27,  26,  25,  24, 23, 22,  21,  20,  19, 18,  17,  16,  15,
-    14,  13,  12,  11,  10, 13, 12,  11,  10,  9,  8,   7,   0};
+    11, 9,   -3, 0,   10,  27,  -74, 28,  0,   14, -7, 0,  0,  0,  18, 8,  -2,
+    0,  0,   13, 12,  11,  0,   0,   0,   0,   0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,   0,  0,   0,   0,   0,   0,   0,   0,  0,  0,  0,  0,  0,  0,  0,
+    0,  -50, 0,  -33, -55, -56, -57, -58, -57, 0,  40, 39, 38, 37, 36, 35, 34,
+    33, 32,  31, 30,  29,  28,  28,  27,  26,  25, 24, 23, 22, 21, 20, 19, 22,
+    21, 20,  19, 18,  17,  16,  15,  14,  13,  12, 12, 11, 0};
 static uint32_t elems_phash(uint32_t i) {
-  i -= 42;
-  uint32_t x = i % 97;
-  uint32_t y = i / 97;
+  i -= 45;
+  uint32_t x = i % 98;
+  uint32_t y = i / 98;
   uint32_t h = x;
   if (y < GPR_ARRAY_SIZE(elems_r)) {
     uint32_t delta = (uint32_t)elems_r[y];
@@ -439,30 +344,31 @@ static uint32_t elems_phash(uint32_t i) {
 }
 
 static const uint16_t elem_keys[] = {
-    1019, 1020, 1021, 242,  243,  244,  245,  246,  139,  140,  42,   43,
-    433,  434,  435,  920,  921,  922,  719,  720,  1406, 527,  721,  1604,
-    1703, 1802, 4871, 4970, 5001, 5168, 5267, 5366, 5465, 1419, 5564, 5663,
-    5762, 5861, 5960, 6059, 6158, 6257, 6356, 6455, 6554, 6653, 6752, 6851,
-    6950, 7049, 7148, 7247, 7346, 7445, 7544, 7643, 7742, 7841, 7940, 8039,
-    8138, 8237, 8336, 8435, 8534, 8633, 1085, 1086, 1087, 1088, 8732, 8831,
-    8930, 9029, 9128, 9227, 9326, 0,    317,  0,    0,    0,    0,    0,
+    1032, 1033, 1034, 247,  248,  249,  250,  251,  1623, 143,  144,  45,
+    46,   440,  441,  442,  1523, 1632, 1633, 932,  933,  934,  729,  730,
+    1423, 1532, 1533, 535,  731,  1923, 2023, 2123, 5223, 5523, 5623, 5723,
+    5823, 1436, 1653, 5923, 6023, 6123, 6223, 6323, 6423, 6523, 6623, 6723,
+    6823, 6923, 7023, 7123, 7223, 5423, 7323, 7423, 7523, 7623, 7723, 7823,
+    7923, 8023, 8123, 8223, 1096, 1097, 1098, 1099, 8323, 8423, 8523, 8623,
+    8723, 8823, 8923, 9023, 9123, 9223, 9323, 323,  9423, 9523, 1697, 0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    133,  233,  234,  0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    137,  238,  239,  0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0};
+    0,    0,    0,    0,    0};
 static const uint8_t elem_idxs[] = {
-    74,  77,  75,  19,  20,  21,  22,  23,  15,  16,  17,  18,  11,  12,  13,
-    3,   4,   5,   0,   1,   41,  6,   2,   70,  48,  55,  24,  25,  26,  27,
-    28,  29,  30,  7,   31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  42,
-    43,  44,  45,  46,  47,  49,  50,  51,  52,  53,  54,  56,  57,  58,  59,
-    60,  61,  62,  63,  64,  65,  76,  78,  79,  80,  66,  67,  68,  69,  71,
-    72,  73,  255, 14,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 8,   9,   10};
+    76,  79,  77,  19,  20,  21,  22,  23,  25,  15,  16,  17,  18,  11,
+    12,  13,  38,  83,  84,  3,   4,   5,   0,   1,   43,  36,  37,  6,
+    2,   72,  50,  57,  24,  28,  29,  30,  31,  7,   26,  32,  33,  34,
+    35,  39,  40,  41,  42,  44,  45,  46,  47,  48,  49,  27,  51,  52,
+    53,  54,  55,  56,  58,  59,  60,  61,  78,  80,  81,  82,  62,  63,
+    64,  65,  66,  67,  68,  69,  70,  71,  73,  14,  74,  75,  85,  255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 8,   9,   10};
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {
   if (a == -1 || b == -1) return GRPC_MDNULL;
-  uint32_t k = (uint32_t)(a * 99 + b);
+  uint32_t k = (uint32_t)(a * 100 + b);
   uint32_t h = elems_phash(k);
   return h < GPR_ARRAY_SIZE(elem_keys) && elem_keys[h] == k &&
                  elem_idxs[h] != 255
@@ -472,330 +378,205 @@ grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {
 }
 
 grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {
-    {{.refcount = &grpc_static_metadata_refcounts[7],
-      .data.refcounted = {g_bytes + 50, 11}},
-     {.refcount = &grpc_static_metadata_refcounts[26],
-      .data.refcounted = {g_bytes + 362, 1}}},
-    {{.refcount = &grpc_static_metadata_refcounts[7],
-      .data.refcounted = {g_bytes + 50, 11}},
-     {.refcount = &grpc_static_metadata_refcounts[27],
-      .data.refcounted = {g_bytes + 363, 1}}},
-    {{.refcount = &grpc_static_metadata_refcounts[7],
-      .data.refcounted = {g_bytes + 50, 11}},
-     {.refcount = &grpc_static_metadata_refcounts[28],
-      .data.refcounted = {g_bytes + 364, 1}}},
-    {{.refcount = &grpc_static_metadata_refcounts[9],
-      .data.refcounted = {g_bytes + 77, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[29],
-      .data.refcounted = {g_bytes + 365, 8}}},
-    {{.refcount = &grpc_static_metadata_refcounts[9],
-      .data.refcounted = {g_bytes + 77, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[30],
-      .data.refcounted = {g_bytes + 373, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[9],
-      .data.refcounted = {g_bytes + 77, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[31],
-      .data.refcounted = {g_bytes + 377, 7}}},
-    {{.refcount = &grpc_static_metadata_refcounts[5],
-      .data.refcounted = {g_bytes + 36, 2}},
-     {.refcount = &grpc_static_metadata_refcounts[32],
-      .data.refcounted = {g_bytes + 384, 8}}},
-    {{.refcount = &grpc_static_metadata_refcounts[14],
-      .data.refcounted = {g_bytes + 158, 12}},
-     {.refcount = &grpc_static_metadata_refcounts[33],
-      .data.refcounted = {g_bytes + 392, 16}}},
-    {{.refcount = &grpc_static_metadata_refcounts[1],
-      .data.refcounted = {g_bytes + 5, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[34],
-      .data.refcounted = {g_bytes + 408, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[35],
-      .data.refcounted = {g_bytes + 412, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[36],
-      .data.refcounted = {g_bytes + 415, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[4],
-      .data.refcounted = {g_bytes + 29, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[37],
-      .data.refcounted = {g_bytes + 418, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[4],
-      .data.refcounted = {g_bytes + 29, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[38],
-      .data.refcounted = {g_bytes + 422, 5}}},
-    {{.refcount = &grpc_static_metadata_refcounts[4],
-      .data.refcounted = {g_bytes + 29, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[39],
-      .data.refcounted = {g_bytes + 427, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[3],
-      .data.refcounted = {g_bytes + 19, 10}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[1],
-      .data.refcounted = {g_bytes + 5, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[40],
-      .data.refcounted = {g_bytes + 431, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[1],
-      .data.refcounted = {g_bytes + 5, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[41],
-      .data.refcounted = {g_bytes + 434, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[0],
-      .data.refcounted = {g_bytes + 0, 5}},
-     {.refcount = &grpc_static_metadata_refcounts[42],
-      .data.refcounted = {g_bytes + 437, 1}}},
-    {{.refcount = &grpc_static_metadata_refcounts[0],
-      .data.refcounted = {g_bytes + 0, 5}},
-     {.refcount = &grpc_static_metadata_refcounts[43],
-      .data.refcounted = {g_bytes + 438, 11}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[44],
-      .data.refcounted = {g_bytes + 449, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[45],
-      .data.refcounted = {g_bytes + 452, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[46],
-      .data.refcounted = {g_bytes + 455, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[47],
-      .data.refcounted = {g_bytes + 458, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[2],
-      .data.refcounted = {g_bytes + 12, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[48],
-      .data.refcounted = {g_bytes + 461, 3}}},
-    {{.refcount = &grpc_static_metadata_refcounts[49],
-      .data.refcounted = {g_bytes + 464, 14}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[50],
-      .data.refcounted = {g_bytes + 478, 15}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[50],
-      .data.refcounted = {g_bytes + 478, 15}},
-     {.refcount = &grpc_static_metadata_refcounts[51],
-      .data.refcounted = {g_bytes + 493, 13}}},
-    {{.refcount = &grpc_static_metadata_refcounts[52],
-      .data.refcounted = {g_bytes + 506, 15}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[53],
-      .data.refcounted = {g_bytes + 521, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[54],
-      .data.refcounted = {g_bytes + 534, 6}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[55],
-      .data.refcounted = {g_bytes + 540, 27}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[56],
-      .data.refcounted = {g_bytes + 567, 3}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[57],
-      .data.refcounted = {g_bytes + 570, 5}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[58],
-      .data.refcounted = {g_bytes + 575, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[59],
-      .data.refcounted = {g_bytes + 588, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[60],
-      .data.refcounted = {g_bytes + 601, 19}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[61],
-      .data.refcounted = {g_bytes + 620, 16}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[62],
-      .data.refcounted = {g_bytes + 636, 16}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[63],
-      .data.refcounted = {g_bytes + 652, 14}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[64],
-      .data.refcounted = {g_bytes + 666, 16}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[65],
-      .data.refcounted = {g_bytes + 682, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[14],
-      .data.refcounted = {g_bytes + 158, 12}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[66],
-      .data.refcounted = {g_bytes + 695, 6}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[67],
-      .data.refcounted = {g_bytes + 701, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[68],
-      .data.refcounted = {g_bytes + 705, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[69],
-      .data.refcounted = {g_bytes + 709, 6}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[70],
-      .data.refcounted = {g_bytes + 715, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[71],
-      .data.refcounted = {g_bytes + 722, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[17],
-      .data.refcounted = {g_bytes + 210, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[72],
-      .data.refcounted = {g_bytes + 726, 8}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[73],
-      .data.refcounted = {g_bytes + 734, 17}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[74],
-      .data.refcounted = {g_bytes + 751, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[75],
-      .data.refcounted = {g_bytes + 764, 8}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[76],
-      .data.refcounted = {g_bytes + 772, 19}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[77],
-      .data.refcounted = {g_bytes + 791, 13}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[18],
-      .data.refcounted = {g_bytes + 214, 8}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[78],
-      .data.refcounted = {g_bytes + 804, 11}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[79],
-      .data.refcounted = {g_bytes + 815, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[80],
-      .data.refcounted = {g_bytes + 819, 8}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[81],
-      .data.refcounted = {g_bytes + 827, 12}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[82],
-      .data.refcounted = {g_bytes + 839, 18}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[83],
-      .data.refcounted = {g_bytes + 857, 19}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[84],
-      .data.refcounted = {g_bytes + 876, 5}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[85],
-      .data.refcounted = {g_bytes + 881, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[86],
-      .data.refcounted = {g_bytes + 888, 7}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[87],
-      .data.refcounted = {g_bytes + 895, 11}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[88],
-      .data.refcounted = {g_bytes + 906, 6}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[89],
-      .data.refcounted = {g_bytes + 912, 10}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[90],
-      .data.refcounted = {g_bytes + 922, 25}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[91],
-      .data.refcounted = {g_bytes + 947, 17}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[16],
-      .data.refcounted = {g_bytes + 200, 10}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[92],
-      .data.refcounted = {g_bytes + 964, 4}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[93],
-      .data.refcounted = {g_bytes + 968, 3}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[94],
-      .data.refcounted = {g_bytes + 971, 16}},
-     {.refcount = &grpc_static_metadata_refcounts[20],
-      .data.refcounted = {g_bytes + 234, 0}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[29],
-      .data.refcounted = {g_bytes + 365, 8}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[31],
-      .data.refcounted = {g_bytes + 377, 7}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[95],
-      .data.refcounted = {g_bytes + 987, 16}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[30],
-      .data.refcounted = {g_bytes + 373, 4}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[96],
-      .data.refcounted = {g_bytes + 1003, 13}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[97],
-      .data.refcounted = {g_bytes + 1016, 12}}},
-    {{.refcount = &grpc_static_metadata_refcounts[10],
-      .data.refcounted = {g_bytes + 90, 20}},
-     {.refcount = &grpc_static_metadata_refcounts[98],
-      .data.refcounted = {g_bytes + 1028, 21}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[29], {{g_bytes + 430, 1}}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[30], {{g_bytes + 431, 1}}}},
+    {{&grpc_static_metadata_refcounts[7], {{g_bytes + 50, 11}}},
+     {&grpc_static_metadata_refcounts[31], {{g_bytes + 432, 1}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[32], {{g_bytes + 433, 8}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[33], {{g_bytes + 441, 4}}}},
+    {{&grpc_static_metadata_refcounts[9], {{g_bytes + 77, 13}}},
+     {&grpc_static_metadata_refcounts[34], {{g_bytes + 445, 7}}}},
+    {{&grpc_static_metadata_refcounts[5], {{g_bytes + 36, 2}}},
+     {&grpc_static_metadata_refcounts[35], {{g_bytes + 452, 8}}}},
+    {{&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+     {&grpc_static_metadata_refcounts[36], {{g_bytes + 460, 16}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[37], {{g_bytes + 476, 4}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[38], {{g_bytes + 480, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[39], {{g_bytes + 483, 3}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[40], {{g_bytes + 486, 4}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[41], {{g_bytes + 490, 5}}}},
+    {{&grpc_static_metadata_refcounts[4], {{g_bytes + 29, 7}}},
+     {&grpc_static_metadata_refcounts[42], {{g_bytes + 495, 4}}}},
+    {{&grpc_static_metadata_refcounts[3], {{g_bytes + 19, 10}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[43], {{g_bytes + 499, 3}}}},
+    {{&grpc_static_metadata_refcounts[1], {{g_bytes + 5, 7}}},
+     {&grpc_static_metadata_refcounts[44], {{g_bytes + 502, 3}}}},
+    {{&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+     {&grpc_static_metadata_refcounts[45], {{g_bytes + 505, 1}}}},
+    {{&grpc_static_metadata_refcounts[0], {{g_bytes + 0, 5}}},
+     {&grpc_static_metadata_refcounts[46], {{g_bytes + 506, 11}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[47], {{g_bytes + 517, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[48], {{g_bytes + 520, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[49], {{g_bytes + 523, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[50], {{g_bytes + 526, 3}}}},
+    {{&grpc_static_metadata_refcounts[2], {{g_bytes + 12, 7}}},
+     {&grpc_static_metadata_refcounts[51], {{g_bytes + 529, 3}}}},
+    {{&grpc_static_metadata_refcounts[52], {{g_bytes + 532, 14}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[53], {{g_bytes + 546, 13}}}},
+    {{&grpc_static_metadata_refcounts[54], {{g_bytes + 559, 15}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[55], {{g_bytes + 574, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[56], {{g_bytes + 587, 6}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[57], {{g_bytes + 593, 27}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[58], {{g_bytes + 620, 3}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[59], {{g_bytes + 623, 5}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[60], {{g_bytes + 628, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[61], {{g_bytes + 641, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[62], {{g_bytes + 654, 19}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[32], {{g_bytes + 433, 8}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[33], {{g_bytes + 441, 4}}}},
+    {{&grpc_static_metadata_refcounts[15], {{g_bytes + 170, 16}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[63], {{g_bytes + 673, 16}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[64], {{g_bytes + 689, 14}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[65], {{g_bytes + 703, 16}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[66], {{g_bytes + 719, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[14], {{g_bytes + 158, 12}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[67], {{g_bytes + 732, 6}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[68], {{g_bytes + 738, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[69], {{g_bytes + 742, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[70], {{g_bytes + 746, 6}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[71], {{g_bytes + 752, 7}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[72], {{g_bytes + 759, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[20], {{g_bytes + 278, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[73], {{g_bytes + 763, 8}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[74], {{g_bytes + 771, 17}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[75], {{g_bytes + 788, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[76], {{g_bytes + 801, 8}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[77], {{g_bytes + 809, 19}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[78], {{g_bytes + 828, 13}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[21], {{g_bytes + 282, 8}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[79], {{g_bytes + 841, 11}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[80], {{g_bytes + 852, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[81], {{g_bytes + 856, 8}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[82], {{g_bytes + 864, 12}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[83], {{g_bytes + 876, 18}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[84], {{g_bytes + 894, 19}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[85], {{g_bytes + 913, 5}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[86], {{g_bytes + 918, 7}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[87], {{g_bytes + 925, 7}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[88], {{g_bytes + 932, 11}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[89], {{g_bytes + 943, 6}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[90], {{g_bytes + 949, 10}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[91], {{g_bytes + 959, 25}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[92], {{g_bytes + 984, 17}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[19], {{g_bytes + 268, 10}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[93], {{g_bytes + 1001, 4}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[94], {{g_bytes + 1005, 3}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[95], {{g_bytes + 1008, 16}}},
+     {&grpc_static_metadata_refcounts[23], {{g_bytes + 302, 0}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[32], {{g_bytes + 433, 8}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[34], {{g_bytes + 445, 7}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[96], {{g_bytes + 1024, 16}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[33], {{g_bytes + 441, 4}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[97], {{g_bytes + 1040, 13}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[98], {{g_bytes + 1053, 12}}}},
+    {{&grpc_static_metadata_refcounts[10], {{g_bytes + 90, 20}}},
+     {&grpc_static_metadata_refcounts[99], {{g_bytes + 1065, 21}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[32], {{g_bytes + 433, 8}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[33], {{g_bytes + 441, 4}}}},
+    {{&grpc_static_metadata_refcounts[16], {{g_bytes + 186, 15}}},
+     {&grpc_static_metadata_refcounts[97], {{g_bytes + 1040, 13}}}},
+};
+bool grpc_static_callout_is_default[GRPC_BATCH_CALLOUTS_COUNT] = {
+    true,  // :path
+    true,  // :method
+    true,  // :status
+    true,  // :authority
+    true,  // :scheme
+    true,  // te
+    true,  // grpc-message
+    true,  // grpc-status
+    true,  // grpc-payload-bin
+    true,  // grpc-encoding
+    true,  // grpc-accept-encoding
+    true,  // grpc-server-stats-bin
+    true,  // grpc-tags-bin
+    true,  // grpc-trace-bin
+    true,  // content-type
+    true,  // content-encoding
+    true,  // accept-encoding
+    true,  // grpc-internal-encoding-request
+    true,  // grpc-internal-stream-encoding-request
+    true,  // user-agent
+    true,  // host
+    true,  // lb-token
 };
-const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  74, 75, 76,
-                                                         77, 78, 79, 80};
+
+const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  76, 77, 78,
+                                                         79, 80, 81, 82};
+
+const uint8_t grpc_static_accept_stream_encoding_metadata[4] = {0, 83, 84, 85};
diff --git a/src/core/lib/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index baa86de142..f03a9d23b1 100644
--- a/src/core/lib/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -29,7 +29,7 @@
 
 #include "src/core/lib/transport/metadata.h"
 
-#define GRPC_STATIC_MDSTR_COUNT 99
+#define GRPC_STATIC_MDSTR_COUNT 100
 extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 /* ":path" */
 #define GRPC_MDSTR_PATH (grpc_static_slice_table[0])
@@ -61,178 +61,181 @@ extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_MDSTR_GRPC_TRACE_BIN (grpc_static_slice_table[13])
 /* "content-type" */
 #define GRPC_MDSTR_CONTENT_TYPE (grpc_static_slice_table[14])
+/* "content-encoding" */
+#define GRPC_MDSTR_CONTENT_ENCODING (grpc_static_slice_table[15])
+/* "accept-encoding" */
+#define GRPC_MDSTR_ACCEPT_ENCODING (grpc_static_slice_table[16])
 /* "grpc-internal-encoding-request" */
-#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST (grpc_static_slice_table[15])
+#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST (grpc_static_slice_table[17])
+/* "grpc-internal-stream-encoding-request" */
+#define GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST \
+  (grpc_static_slice_table[18])
 /* "user-agent" */
-#define GRPC_MDSTR_USER_AGENT (grpc_static_slice_table[16])
+#define GRPC_MDSTR_USER_AGENT (grpc_static_slice_table[19])
 /* "host" */
-#define GRPC_MDSTR_HOST (grpc_static_slice_table[17])
+#define GRPC_MDSTR_HOST (grpc_static_slice_table[20])
 /* "lb-token" */
-#define GRPC_MDSTR_LB_TOKEN (grpc_static_slice_table[18])
+#define GRPC_MDSTR_LB_TOKEN (grpc_static_slice_table[21])
 /* "grpc-timeout" */
-#define GRPC_MDSTR_GRPC_TIMEOUT (grpc_static_slice_table[19])
+#define GRPC_MDSTR_GRPC_TIMEOUT (grpc_static_slice_table[22])
 /* "" */
-#define GRPC_MDSTR_EMPTY (grpc_static_slice_table[20])
+#define GRPC_MDSTR_EMPTY (grpc_static_slice_table[23])
 /* "grpc.wait_for_ready" */
-#define GRPC_MDSTR_GRPC_DOT_WAIT_FOR_READY (grpc_static_slice_table[21])
+#define GRPC_MDSTR_GRPC_DOT_WAIT_FOR_READY (grpc_static_slice_table[24])
 /* "grpc.timeout" */
-#define GRPC_MDSTR_GRPC_DOT_TIMEOUT (grpc_static_slice_table[22])
+#define GRPC_MDSTR_GRPC_DOT_TIMEOUT (grpc_static_slice_table[25])
 /* "grpc.max_request_message_bytes" */
 #define GRPC_MDSTR_GRPC_DOT_MAX_REQUEST_MESSAGE_BYTES \
-  (grpc_static_slice_table[23])
+  (grpc_static_slice_table[26])
 /* "grpc.max_response_message_bytes" */
 #define GRPC_MDSTR_GRPC_DOT_MAX_RESPONSE_MESSAGE_BYTES \
-  (grpc_static_slice_table[24])
+  (grpc_static_slice_table[27])
 /* "/grpc.lb.v1.LoadBalancer/BalanceLoad" */
 #define GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD \
-  (grpc_static_slice_table[25])
+  (grpc_static_slice_table[28])
 /* "0" */
-#define GRPC_MDSTR_0 (grpc_static_slice_table[26])
+#define GRPC_MDSTR_0 (grpc_static_slice_table[29])
 /* "1" */
-#define GRPC_MDSTR_1 (grpc_static_slice_table[27])
+#define GRPC_MDSTR_1 (grpc_static_slice_table[30])
 /* "2" */
-#define GRPC_MDSTR_2 (grpc_static_slice_table[28])
+#define GRPC_MDSTR_2 (grpc_static_slice_table[31])
 /* "identity" */
-#define GRPC_MDSTR_IDENTITY (grpc_static_slice_table[29])
+#define GRPC_MDSTR_IDENTITY (grpc_static_slice_table[32])
 /* "gzip" */
-#define GRPC_MDSTR_GZIP (grpc_static_slice_table[30])
+#define GRPC_MDSTR_GZIP (grpc_static_slice_table[33])
 /* "deflate" */
-#define GRPC_MDSTR_DEFLATE (grpc_static_slice_table[31])
+#define GRPC_MDSTR_DEFLATE (grpc_static_slice_table[34])
 /* "trailers" */
-#define GRPC_MDSTR_TRAILERS (grpc_static_slice_table[32])
+#define GRPC_MDSTR_TRAILERS (grpc_static_slice_table[35])
 /* "application/grpc" */
-#define GRPC_MDSTR_APPLICATION_SLASH_GRPC (grpc_static_slice_table[33])
+#define GRPC_MDSTR_APPLICATION_SLASH_GRPC (grpc_static_slice_table[36])
 /* "POST" */
-#define GRPC_MDSTR_POST (grpc_static_slice_table[34])
+#define GRPC_MDSTR_POST (grpc_static_slice_table[37])
 /* "200" */
-#define GRPC_MDSTR_200 (grpc_static_slice_table[35])
+#define GRPC_MDSTR_200 (grpc_static_slice_table[38])
 /* "404" */
-#define GRPC_MDSTR_404 (grpc_static_slice_table[36])
+#define GRPC_MDSTR_404 (grpc_static_slice_table[39])
 /* "http" */
-#define GRPC_MDSTR_HTTP (grpc_static_slice_table[37])
+#define GRPC_MDSTR_HTTP (grpc_static_slice_table[40])
 /* "https" */
-#define GRPC_MDSTR_HTTPS (grpc_static_slice_table[38])
+#define GRPC_MDSTR_HTTPS (grpc_static_slice_table[41])
 /* "grpc" */
-#define GRPC_MDSTR_GRPC (grpc_static_slice_table[39])
+#define GRPC_MDSTR_GRPC (grpc_static_slice_table[42])
 /* "GET" */
-#define GRPC_MDSTR_GET (grpc_static_slice_table[40])
+#define GRPC_MDSTR_GET (grpc_static_slice_table[43])
 /* "PUT" */
-#define GRPC_MDSTR_PUT (grpc_static_slice_table[41])
+#define GRPC_MDSTR_PUT (grpc_static_slice_table[44])
 /* "/" */
-#define GRPC_MDSTR_SLASH (grpc_static_slice_table[42])
+#define GRPC_MDSTR_SLASH (grpc_static_slice_table[45])
 /* "/index.html" */
-#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (grpc_static_slice_table[43])
+#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (grpc_static_slice_table[46])
 /* "204" */
-#define GRPC_MDSTR_204 (grpc_static_slice_table[44])
+#define GRPC_MDSTR_204 (grpc_static_slice_table[47])
 /* "206" */
-#define GRPC_MDSTR_206 (grpc_static_slice_table[45])
+#define GRPC_MDSTR_206 (grpc_static_slice_table[48])
 /* "304" */
-#define GRPC_MDSTR_304 (grpc_static_slice_table[46])
+#define GRPC_MDSTR_304 (grpc_static_slice_table[49])
 /* "400" */
-#define GRPC_MDSTR_400 (grpc_static_slice_table[47])
+#define GRPC_MDSTR_400 (grpc_static_slice_table[50])
 /* "500" */
-#define GRPC_MDSTR_500 (grpc_static_slice_table[48])
+#define GRPC_MDSTR_500 (grpc_static_slice_table[51])
 /* "accept-charset" */
-#define GRPC_MDSTR_ACCEPT_CHARSET (grpc_static_slice_table[49])
-/* "accept-encoding" */
-#define GRPC_MDSTR_ACCEPT_ENCODING (grpc_static_slice_table[50])
+#define GRPC_MDSTR_ACCEPT_CHARSET (grpc_static_slice_table[52])
 /* "gzip, deflate" */
-#define GRPC_MDSTR_GZIP_COMMA_DEFLATE (grpc_static_slice_table[51])
+#define GRPC_MDSTR_GZIP_COMMA_DEFLATE (grpc_static_slice_table[53])
 /* "accept-language" */
-#define GRPC_MDSTR_ACCEPT_LANGUAGE (grpc_static_slice_table[52])
+#define GRPC_MDSTR_ACCEPT_LANGUAGE (grpc_static_slice_table[54])
 /* "accept-ranges" */
-#define GRPC_MDSTR_ACCEPT_RANGES (grpc_static_slice_table[53])
+#define GRPC_MDSTR_ACCEPT_RANGES (grpc_static_slice_table[55])
 /* "accept" */
-#define GRPC_MDSTR_ACCEPT (grpc_static_slice_table[54])
+#define GRPC_MDSTR_ACCEPT (grpc_static_slice_table[56])
 /* "access-control-allow-origin" */
-#define GRPC_MDSTR_ACCESS_CONTROL_ALLOW_ORIGIN (grpc_static_slice_table[55])
+#define GRPC_MDSTR_ACCESS_CONTROL_ALLOW_ORIGIN (grpc_static_slice_table[57])
 /* "age" */
-#define GRPC_MDSTR_AGE (grpc_static_slice_table[56])
+#define GRPC_MDSTR_AGE (grpc_static_slice_table[58])
 /* "allow" */
-#define GRPC_MDSTR_ALLOW (grpc_static_slice_table[57])
+#define GRPC_MDSTR_ALLOW (grpc_static_slice_table[59])
 /* "authorization" */
-#define GRPC_MDSTR_AUTHORIZATION (grpc_static_slice_table[58])
+#define GRPC_MDSTR_AUTHORIZATION (grpc_static_slice_table[60])
 /* "cache-control" */
-#define GRPC_MDSTR_CACHE_CONTROL (grpc_static_slice_table[59])
+#define GRPC_MDSTR_CACHE_CONTROL (grpc_static_slice_table[61])
 /* "content-disposition" */
-#define GRPC_MDSTR_CONTENT_DISPOSITION (grpc_static_slice_table[60])
-/* "content-encoding" */
-#define GRPC_MDSTR_CONTENT_ENCODING (grpc_static_slice_table[61])
+#define GRPC_MDSTR_CONTENT_DISPOSITION (grpc_static_slice_table[62])
 /* "content-language" */
-#define GRPC_MDSTR_CONTENT_LANGUAGE (grpc_static_slice_table[62])
+#define GRPC_MDSTR_CONTENT_LANGUAGE (grpc_static_slice_table[63])
 /* "content-length" */
-#define GRPC_MDSTR_CONTENT_LENGTH (grpc_static_slice_table[63])
+#define GRPC_MDSTR_CONTENT_LENGTH (grpc_static_slice_table[64])
 /* "content-location" */
-#define GRPC_MDSTR_CONTENT_LOCATION (grpc_static_slice_table[64])
+#define GRPC_MDSTR_CONTENT_LOCATION (grpc_static_slice_table[65])
 /* "content-range" */
-#define GRPC_MDSTR_CONTENT_RANGE (grpc_static_slice_table[65])
+#define GRPC_MDSTR_CONTENT_RANGE (grpc_static_slice_table[66])
 /* "cookie" */
-#define GRPC_MDSTR_COOKIE (grpc_static_slice_table[66])
+#define GRPC_MDSTR_COOKIE (grpc_static_slice_table[67])
 /* "date" */
-#define GRPC_MDSTR_DATE (grpc_static_slice_table[67])
+#define GRPC_MDSTR_DATE (grpc_static_slice_table[68])
 /* "etag" */
-#define GRPC_MDSTR_ETAG (grpc_static_slice_table[68])
+#define GRPC_MDSTR_ETAG (grpc_static_slice_table[69])
 /* "expect" */
-#define GRPC_MDSTR_EXPECT (grpc_static_slice_table[69])
+#define GRPC_MDSTR_EXPECT (grpc_static_slice_table[70])
 /* "expires" */
-#define GRPC_MDSTR_EXPIRES (grpc_static_slice_table[70])
+#define GRPC_MDSTR_EXPIRES (grpc_static_slice_table[71])
 /* "from" */
-#define GRPC_MDSTR_FROM (grpc_static_slice_table[71])
+#define GRPC_MDSTR_FROM (grpc_static_slice_table[72])
 /* "if-match" */
-#define GRPC_MDSTR_IF_MATCH (grpc_static_slice_table[72])
+#define GRPC_MDSTR_IF_MATCH (grpc_static_slice_table[73])
 /* "if-modified-since" */
-#define GRPC_MDSTR_IF_MODIFIED_SINCE (grpc_static_slice_table[73])
+#define GRPC_MDSTR_IF_MODIFIED_SINCE (grpc_static_slice_table[74])
 /* "if-none-match" */
-#define GRPC_MDSTR_IF_NONE_MATCH (grpc_static_slice_table[74])
+#define GRPC_MDSTR_IF_NONE_MATCH (grpc_static_slice_table[75])
 /* "if-range" */
-#define GRPC_MDSTR_IF_RANGE (grpc_static_slice_table[75])
+#define GRPC_MDSTR_IF_RANGE (grpc_static_slice_table[76])
 /* "if-unmodified-since" */
-#define GRPC_MDSTR_IF_UNMODIFIED_SINCE (grpc_static_slice_table[76])
+#define GRPC_MDSTR_IF_UNMODIFIED_SINCE (grpc_static_slice_table[77])
 /* "last-modified" */
-#define GRPC_MDSTR_LAST_MODIFIED (grpc_static_slice_table[77])
+#define GRPC_MDSTR_LAST_MODIFIED (grpc_static_slice_table[78])
 /* "lb-cost-bin" */
-#define GRPC_MDSTR_LB_COST_BIN (grpc_static_slice_table[78])
+#define GRPC_MDSTR_LB_COST_BIN (grpc_static_slice_table[79])
 /* "link" */
-#define GRPC_MDSTR_LINK (grpc_static_slice_table[79])
+#define GRPC_MDSTR_LINK (grpc_static_slice_table[80])
 /* "location" */
-#define GRPC_MDSTR_LOCATION (grpc_static_slice_table[80])
+#define GRPC_MDSTR_LOCATION (grpc_static_slice_table[81])
 /* "max-forwards" */
-#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table[81])
+#define GRPC_MDSTR_MAX_FORWARDS (grpc_static_slice_table[82])
 /* "proxy-authenticate" */
-#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table[82])
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (grpc_static_slice_table[83])
 /* "proxy-authorization" */
-#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table[83])
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (grpc_static_slice_table[84])
 /* "range" */
-#define GRPC_MDSTR_RANGE (grpc_static_slice_table[84])
+#define GRPC_MDSTR_RANGE (grpc_static_slice_table[85])
 /* "referer" */
-#define GRPC_MDSTR_REFERER (grpc_static_slice_table[85])
+#define GRPC_MDSTR_REFERER (grpc_static_slice_table[86])
 /* "refresh" */
-#define GRPC_MDSTR_REFRESH (grpc_static_slice_table[86])
+#define GRPC_MDSTR_REFRESH (grpc_static_slice_table[87])
 /* "retry-after" */
-#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table[87])
+#define GRPC_MDSTR_RETRY_AFTER (grpc_static_slice_table[88])
 /* "server" */
-#define GRPC_MDSTR_SERVER (grpc_static_slice_table[88])
+#define GRPC_MDSTR_SERVER (grpc_static_slice_table[89])
 /* "set-cookie" */
-#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table[89])
+#define GRPC_MDSTR_SET_COOKIE (grpc_static_slice_table[90])
 /* "strict-transport-security" */
-#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table[90])
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (grpc_static_slice_table[91])
 /* "transfer-encoding" */
-#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table[91])
+#define GRPC_MDSTR_TRANSFER_ENCODING (grpc_static_slice_table[92])
 /* "vary" */
-#define GRPC_MDSTR_VARY (grpc_static_slice_table[92])
+#define GRPC_MDSTR_VARY (grpc_static_slice_table[93])
 /* "via" */
-#define GRPC_MDSTR_VIA (grpc_static_slice_table[93])
+#define GRPC_MDSTR_VIA (grpc_static_slice_table[94])
 /* "www-authenticate" */
-#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table[94])
+#define GRPC_MDSTR_WWW_AUTHENTICATE (grpc_static_slice_table[95])
 /* "identity,deflate" */
-#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table[95])
+#define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE (grpc_static_slice_table[96])
 /* "identity,gzip" */
-#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table[96])
+#define GRPC_MDSTR_IDENTITY_COMMA_GZIP (grpc_static_slice_table[97])
 /* "deflate,gzip" */
-#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table[97])
+#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (grpc_static_slice_table[98])
 /* "identity,deflate,gzip" */
 #define GRPC_MDSTR_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
-  (grpc_static_slice_table[98])
+  (grpc_static_slice_table[99])
 
 extern const grpc_slice_refcount_vtable grpc_static_metadata_vtable;
 extern grpc_slice_refcount
@@ -244,7 +247,7 @@ extern grpc_slice_refcount
 #define GRPC_STATIC_METADATA_INDEX(static_slice) \
   ((int)((static_slice).refcount - grpc_static_metadata_refcounts))
 
-#define GRPC_STATIC_MDELEM_COUNT 81
+#define GRPC_STATIC_MDELEM_COUNT 86
 extern grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "grpc-status": "0" */
@@ -355,141 +358,156 @@ extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "content-disposition": "" */
 #define GRPC_MDELEM_CONTENT_DISPOSITION_EMPTY \
   (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[35], GRPC_MDELEM_STORAGE_STATIC))
+/* "content-encoding": "identity" */
+#define GRPC_MDELEM_CONTENT_ENCODING_IDENTITY \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[36], GRPC_MDELEM_STORAGE_STATIC))
+/* "content-encoding": "gzip" */
+#define GRPC_MDELEM_CONTENT_ENCODING_GZIP \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[37], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-encoding": "" */
 #define GRPC_MDELEM_CONTENT_ENCODING_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[36], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[38], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-language": "" */
 #define GRPC_MDELEM_CONTENT_LANGUAGE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[37], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[39], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-length": "" */
 #define GRPC_MDELEM_CONTENT_LENGTH_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[38], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[40], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-location": "" */
 #define GRPC_MDELEM_CONTENT_LOCATION_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[39], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[41], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-range": "" */
 #define GRPC_MDELEM_CONTENT_RANGE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[40], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[42], GRPC_MDELEM_STORAGE_STATIC))
 /* "content-type": "" */
 #define GRPC_MDELEM_CONTENT_TYPE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[41], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[43], GRPC_MDELEM_STORAGE_STATIC))
 /* "cookie": "" */
 #define GRPC_MDELEM_COOKIE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[42], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[44], GRPC_MDELEM_STORAGE_STATIC))
 /* "date": "" */
 #define GRPC_MDELEM_DATE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[43], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[45], GRPC_MDELEM_STORAGE_STATIC))
 /* "etag": "" */
 #define GRPC_MDELEM_ETAG_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[44], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[46], GRPC_MDELEM_STORAGE_STATIC))
 /* "expect": "" */
 #define GRPC_MDELEM_EXPECT_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[45], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[47], GRPC_MDELEM_STORAGE_STATIC))
 /* "expires": "" */
 #define GRPC_MDELEM_EXPIRES_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[46], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[48], GRPC_MDELEM_STORAGE_STATIC))
 /* "from": "" */
 #define GRPC_MDELEM_FROM_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[47], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[49], GRPC_MDELEM_STORAGE_STATIC))
 /* "host": "" */
 #define GRPC_MDELEM_HOST_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[48], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[50], GRPC_MDELEM_STORAGE_STATIC))
 /* "if-match": "" */
 #define GRPC_MDELEM_IF_MATCH_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[49], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[51], GRPC_MDELEM_STORAGE_STATIC))
 /* "if-modified-since": "" */
 #define GRPC_MDELEM_IF_MODIFIED_SINCE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[50], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[52], GRPC_MDELEM_STORAGE_STATIC))
 /* "if-none-match": "" */
 #define GRPC_MDELEM_IF_NONE_MATCH_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[51], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[53], GRPC_MDELEM_STORAGE_STATIC))
 /* "if-range": "" */
 #define GRPC_MDELEM_IF_RANGE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[52], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[54], GRPC_MDELEM_STORAGE_STATIC))
 /* "if-unmodified-since": "" */
 #define GRPC_MDELEM_IF_UNMODIFIED_SINCE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[53], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[55], GRPC_MDELEM_STORAGE_STATIC))
 /* "last-modified": "" */
 #define GRPC_MDELEM_LAST_MODIFIED_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[54], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC))
 /* "lb-token": "" */
 #define GRPC_MDELEM_LB_TOKEN_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[55], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC))
 /* "lb-cost-bin": "" */
 #define GRPC_MDELEM_LB_COST_BIN_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[56], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC))
 /* "link": "" */
 #define GRPC_MDELEM_LINK_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[57], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC))
 /* "location": "" */
 #define GRPC_MDELEM_LOCATION_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[58], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC))
 /* "max-forwards": "" */
 #define GRPC_MDELEM_MAX_FORWARDS_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[59], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC))
 /* "proxy-authenticate": "" */
 #define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[60], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC))
 /* "proxy-authorization": "" */
 #define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[61], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC))
 /* "range": "" */
 #define GRPC_MDELEM_RANGE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[62], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC))
 /* "referer": "" */
 #define GRPC_MDELEM_REFERER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[63], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC))
 /* "refresh": "" */
 #define GRPC_MDELEM_REFRESH_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[64], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC))
 /* "retry-after": "" */
 #define GRPC_MDELEM_RETRY_AFTER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[65], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC))
 /* "server": "" */
 #define GRPC_MDELEM_SERVER_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[66], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC))
 /* "set-cookie": "" */
 #define GRPC_MDELEM_SET_COOKIE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[67], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC))
 /* "strict-transport-security": "" */
 #define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[68], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC))
 /* "transfer-encoding": "" */
 #define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[69], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC))
 /* "user-agent": "" */
 #define GRPC_MDELEM_USER_AGENT_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[70], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC))
 /* "vary": "" */
 #define GRPC_MDELEM_VARY_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[71], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC))
 /* "via": "" */
 #define GRPC_MDELEM_VIA_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[72], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC))
 /* "www-authenticate": "" */
 #define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[73], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[74], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "deflate" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[75], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,deflate" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[76], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[77], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[78], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[80], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "deflate,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_DEFLATE_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[79], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[81], GRPC_MDELEM_STORAGE_STATIC))
 /* "grpc-accept-encoding": "identity,deflate,gzip" */
 #define GRPC_MDELEM_GRPC_ACCEPT_ENCODING_IDENTITY_COMMA_DEFLATE_COMMA_GZIP \
-  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[80], GRPC_MDELEM_STORAGE_STATIC))
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[82], GRPC_MDELEM_STORAGE_STATIC))
+/* "accept-encoding": "identity" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[83], GRPC_MDELEM_STORAGE_STATIC))
+/* "accept-encoding": "gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_GZIP \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[84], GRPC_MDELEM_STORAGE_STATIC))
+/* "accept-encoding": "identity,gzip" */
+#define GRPC_MDELEM_ACCEPT_ENCODING_IDENTITY_COMMA_GZIP \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[85], GRPC_MDELEM_STORAGE_STATIC))
 
 grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b);
 typedef enum {
@@ -508,7 +526,10 @@ typedef enum {
   GRPC_BATCH_GRPC_TAGS_BIN,
   GRPC_BATCH_GRPC_TRACE_BIN,
   GRPC_BATCH_CONTENT_TYPE,
+  GRPC_BATCH_CONTENT_ENCODING,
+  GRPC_BATCH_ACCEPT_ENCODING,
   GRPC_BATCH_GRPC_INTERNAL_ENCODING_REQUEST,
+  GRPC_BATCH_GRPC_INTERNAL_STREAM_ENCODING_REQUEST,
   GRPC_BATCH_USER_AGENT,
   GRPC_BATCH_HOST,
   GRPC_BATCH_LB_TOKEN,
@@ -533,7 +554,10 @@ typedef union {
     struct grpc_linked_mdelem *grpc_tags_bin;
     struct grpc_linked_mdelem *grpc_trace_bin;
     struct grpc_linked_mdelem *content_type;
+    struct grpc_linked_mdelem *content_encoding;
+    struct grpc_linked_mdelem *accept_encoding;
     struct grpc_linked_mdelem *grpc_internal_encoding_request;
+    struct grpc_linked_mdelem *grpc_internal_stream_encoding_request;
     struct grpc_linked_mdelem *user_agent;
     struct grpc_linked_mdelem *host;
     struct grpc_linked_mdelem *lb_token;
@@ -547,9 +571,17 @@ typedef union {
              GRPC_BATCH_CALLOUTS_COUNT)                 \
        : GRPC_BATCH_CALLOUTS_COUNT)
 
+extern bool grpc_static_callout_is_default[GRPC_BATCH_CALLOUTS_COUNT];
+
 extern const uint8_t grpc_static_accept_encoding_metadata[8];
 #define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs)                       \
   (GRPC_MAKE_MDELEM(                                                           \
       &grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], \
       GRPC_MDELEM_STORAGE_STATIC))
+
+extern const uint8_t grpc_static_accept_stream_encoding_metadata[4];
+#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs)                \
+  (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table                                  \
+                        [grpc_static_accept_stream_encoding_metadata[(algs)]], \
+                    GRPC_MDELEM_STORAGE_STATIC))
 #endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */
diff --git a/src/core/lib/transport/status_conversion.c b/src/core/lib/transport/status_conversion.c
index 9a76977e4b..a40d333284 100644
--- a/src/core/lib/transport/status_conversion.c
+++ b/src/core/lib/transport/status_conversion.c
@@ -18,7 +18,7 @@
 
 #include "src/core/lib/transport/status_conversion.h"
 
-int grpc_status_to_http2_error(grpc_status_code status) {
+grpc_http2_error_code grpc_status_to_http2_error(grpc_status_code status) {
   switch (status) {
     case GRPC_STATUS_OK:
       return GRPC_HTTP2_NO_ERROR;
diff --git a/src/core/lib/transport/transport.c b/src/core/lib/transport/transport.c
index 6c61f4b8d9..682a820b48 100644
--- a/src/core/lib/transport/transport.c
+++ b/src/core/lib/transport/transport.c
@@ -72,7 +72,8 @@ void grpc_stream_unref(grpc_exec_ctx *exec_ctx,
          cope with.
          Throw this over to the executor (on a core-owned thread) and process it
          there. */
-      refcount->destroy.scheduler = grpc_executor_scheduler;
+      refcount->destroy.scheduler =
+          grpc_executor_scheduler(GRPC_EXECUTOR_SHORT);
     }
     GRPC_CLOSURE_SCHED(exec_ctx, &refcount->destroy, GRPC_ERROR_NONE);
   }
@@ -101,8 +102,11 @@ static void slice_stream_unref(grpc_exec_ctx *exec_ctx, void *p) {
 grpc_slice grpc_slice_from_stream_owned_buffer(grpc_stream_refcount *refcount,
                                                void *buffer, size_t length) {
   slice_stream_ref(&refcount->slice_refcount);
-  return (grpc_slice){.refcount = &refcount->slice_refcount,
-                      .data.refcounted = {.bytes = buffer, .length = length}};
+  grpc_slice res;
+  res.refcount = &refcount->slice_refcount,
+  res.data.refcounted.bytes = (uint8_t *)buffer;
+  res.data.refcounted.length = length;
+  return res;
 }
 
 static const grpc_slice_refcount_vtable stream_ref_slice_vtable = {
@@ -197,11 +201,6 @@ void grpc_transport_destroy_stream(grpc_exec_ctx *exec_ctx,
                                     then_schedule_closure);
 }
 
-char *grpc_transport_get_peer(grpc_exec_ctx *exec_ctx,
-                              grpc_transport *transport) {
-  return transport->vtable->get_peer(exec_ctx, transport);
-}
-
 grpc_endpoint *grpc_transport_get_endpoint(grpc_exec_ctx *exec_ctx,
                                            grpc_transport *transport) {
   return transport->vtable->get_endpoint(exec_ctx, transport);
@@ -214,24 +213,24 @@ grpc_endpoint *grpc_transport_get_endpoint(grpc_exec_ctx *exec_ctx,
 // is a function that must always unref cancel_error
 // though it lives in lib, it handles transport stream ops sure
 // it's grpc_transport_stream_op_batch_finish_with_failure
-
 void grpc_transport_stream_op_batch_finish_with_failure(
     grpc_exec_ctx *exec_ctx, grpc_transport_stream_op_batch *batch,
-    grpc_error *error) {
+    grpc_error *error, grpc_call_combiner *call_combiner) {
   if (batch->send_message) {
     grpc_byte_stream_destroy(exec_ctx,
                              batch->payload->send_message.send_message);
   }
   if (batch->recv_message) {
-    GRPC_CLOSURE_SCHED(exec_ctx,
-                       batch->payload->recv_message.recv_message_ready,
-                       GRPC_ERROR_REF(error));
+    GRPC_CALL_COMBINER_START(exec_ctx, call_combiner,
+                             batch->payload->recv_message.recv_message_ready,
+                             GRPC_ERROR_REF(error),
+                             "failing recv_message_ready");
   }
   if (batch->recv_initial_metadata) {
-    GRPC_CLOSURE_SCHED(
-        exec_ctx,
+    GRPC_CALL_COMBINER_START(
+        exec_ctx, call_combiner,
         batch->payload->recv_initial_metadata.recv_initial_metadata_ready,
-        GRPC_ERROR_REF(error));
+        GRPC_ERROR_REF(error), "failing recv_initial_metadata_ready");
   }
   GRPC_CLOSURE_SCHED(exec_ctx, batch->on_complete, error);
   if (batch->cancel_stream) {
@@ -247,13 +246,13 @@ typedef struct {
 
 static void destroy_made_transport_op(grpc_exec_ctx *exec_ctx, void *arg,
                                       grpc_error *error) {
-  made_transport_op *op = arg;
+  made_transport_op *op = (made_transport_op *)arg;
   GRPC_CLOSURE_SCHED(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error));
   gpr_free(op);
 }
 
 grpc_transport_op *grpc_make_transport_op(grpc_closure *on_complete) {
-  made_transport_op *op = gpr_malloc(sizeof(*op));
+  made_transport_op *op = (made_transport_op *)gpr_malloc(sizeof(*op));
   GRPC_CLOSURE_INIT(&op->outer_on_complete, destroy_made_transport_op, op,
                     grpc_schedule_on_exec_ctx);
   op->inner_on_complete = on_complete;
@@ -271,7 +270,7 @@ typedef struct {
 
 static void destroy_made_transport_stream_op(grpc_exec_ctx *exec_ctx, void *arg,
                                              grpc_error *error) {
-  made_transport_stream_op *op = arg;
+  made_transport_stream_op *op = (made_transport_stream_op *)arg;
   grpc_closure *c = op->inner_on_complete;
   gpr_free(op);
   GRPC_CLOSURE_RUN(exec_ctx, c, GRPC_ERROR_REF(error));
@@ -279,7 +278,8 @@ static void destroy_made_transport_stream_op(grpc_exec_ctx *exec_ctx, void *arg,
 
 grpc_transport_stream_op_batch *grpc_make_transport_stream_op(
     grpc_closure *on_complete) {
-  made_transport_stream_op *op = gpr_zalloc(sizeof(*op));
+  made_transport_stream_op *op =
+      (made_transport_stream_op *)gpr_zalloc(sizeof(*op));
   op->op.payload = &op->payload;
   GRPC_CLOSURE_INIT(&op->outer_on_complete, destroy_made_transport_stream_op,
                     op, grpc_schedule_on_exec_ctx);
diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index 099138ea14..fbf5dcb8b5 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -22,6 +22,7 @@
 #include <stddef.h>
 
 #include "src/core/lib/channel/context.h"
+#include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/polling_entity.h"
 #include "src/core/lib/iomgr/pollset.h"
@@ -152,6 +153,9 @@ struct grpc_transport_stream_op_batch_payload {
     /** Iff send_initial_metadata != NULL, flags associated with
         send_initial_metadata: a bitfield of GRPC_INITIAL_METADATA_xxx */
     uint32_t send_initial_metadata_flags;
+    // If non-NULL, will be set by the transport to the peer string
+    // (a char*, which the caller takes ownership of).
+    gpr_atm *peer_string;
   } send_initial_metadata;
 
   struct {
@@ -176,6 +180,9 @@ struct grpc_transport_stream_op_batch_payload {
     // immediately available.  This may be a signal that we received a
     // Trailers-Only response.
     bool *trailing_metadata_available;
+    // If non-NULL, will be set by the transport to the peer string
+    // (a char*, which the caller takes ownership of).
+    gpr_atm *peer_string;
   } recv_initial_metadata;
 
   struct {
@@ -293,7 +300,7 @@ void grpc_transport_destroy_stream(grpc_exec_ctx *exec_ctx,
 
 void grpc_transport_stream_op_batch_finish_with_failure(
     grpc_exec_ctx *exec_ctx, grpc_transport_stream_op_batch *op,
-    grpc_error *error);
+    grpc_error *error, grpc_call_combiner *call_combiner);
 
 char *grpc_transport_stream_op_batch_string(grpc_transport_stream_op_batch *op);
 char *grpc_transport_op_string(grpc_transport_op *op);
@@ -332,10 +339,6 @@ void grpc_transport_close(grpc_transport *transport);
 /* Destroy the transport */
 void grpc_transport_destroy(grpc_exec_ctx *exec_ctx, grpc_transport *transport);
 
-/* Get the transports peer */
-char *grpc_transport_get_peer(grpc_exec_ctx *exec_ctx,
-                              grpc_transport *transport);
-
 /* Get the endpoint used by \a transport */
 grpc_endpoint *grpc_transport_get_endpoint(grpc_exec_ctx *exec_ctx,
                                            grpc_transport *transport);
diff --git a/src/core/lib/transport/transport_impl.h b/src/core/lib/transport/transport_impl.h
index fc772c6dd1..bbae69c223 100644
--- a/src/core/lib/transport/transport_impl.h
+++ b/src/core/lib/transport/transport_impl.h
@@ -59,9 +59,6 @@ typedef struct grpc_transport_vtable {
   /* implementation of grpc_transport_destroy */
   void (*destroy)(grpc_exec_ctx *exec_ctx, grpc_transport *self);
 
-  /* implementation of grpc_transport_get_peer */
-  char *(*get_peer)(grpc_exec_ctx *exec_ctx, grpc_transport *self);
-
   /* implementation of grpc_transport_get_endpoint */
   grpc_endpoint *(*get_endpoint)(grpc_exec_ctx *exec_ctx, grpc_transport *self);
 } grpc_transport_vtable;
diff --git a/src/core/lib/transport/transport_op_string.c b/src/core/lib/transport/transport_op_string.c
index 7b18229ba6..858664715c 100644
--- a/src/core/lib/transport/transport_op_string.c
+++ b/src/core/lib/transport/transport_op_string.c
@@ -112,6 +112,13 @@ char *grpc_transport_stream_op_batch_string(
     gpr_strvec_add(&b, tmp);
   }
 
+  if (op->collect_stats) {
+    gpr_strvec_add(&b, gpr_strdup(" "));
+    gpr_asprintf(&tmp, "COLLECT_STATS:%p",
+                 op->payload->collect_stats.collect_stats);
+    gpr_strvec_add(&b, tmp);
+  }
+
   out = gpr_strvec_flatten(&b, NULL);
   gpr_strvec_destroy(&b);
 
@@ -190,7 +197,7 @@ char *grpc_transport_op_string(grpc_transport_op *op) {
   return out;
 }
 
-void grpc_call_log_op(char *file, int line, gpr_log_severity severity,
+void grpc_call_log_op(const char *file, int line, gpr_log_severity severity,
                       grpc_call_element *elem,
                       grpc_transport_stream_op_batch *op) {
   char *str = grpc_transport_stream_op_batch_string(op);
diff --git a/src/core/plugin_registry/grpc_cronet_plugin_registry.c b/src/core/plugin_registry/grpc_cronet_plugin_registry.c
index 322ebea111..1c09f54ad9 100644
--- a/src/core/plugin_registry/grpc_cronet_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_cronet_plugin_registry.c
@@ -28,8 +28,8 @@ extern void grpc_client_channel_init(void);
 extern void grpc_client_channel_shutdown(void);
 extern void grpc_tsi_gts_init(void);
 extern void grpc_tsi_gts_shutdown(void);
-extern void grpc_load_reporting_plugin_init(void);
-extern void grpc_load_reporting_plugin_shutdown(void);
+extern void grpc_server_load_reporting_plugin_init(void);
+extern void grpc_server_load_reporting_plugin_shutdown(void);
 
 void grpc_register_built_in_plugins(void) {
   grpc_register_plugin(grpc_http_filters_init,
@@ -42,6 +42,6 @@ void grpc_register_built_in_plugins(void) {
                        grpc_client_channel_shutdown);
   grpc_register_plugin(grpc_tsi_gts_init,
                        grpc_tsi_gts_shutdown);
-  grpc_register_plugin(grpc_load_reporting_plugin_init,
-                       grpc_load_reporting_plugin_shutdown);
+  grpc_register_plugin(grpc_server_load_reporting_plugin_init,
+                       grpc_server_load_reporting_plugin_shutdown);
 }
diff --git a/src/core/plugin_registry/grpc_plugin_registry.c b/src/core/plugin_registry/grpc_plugin_registry.c
index fa9974952c..9cacf3d306 100644
--- a/src/core/plugin_registry/grpc_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_plugin_registry.c
@@ -44,8 +44,8 @@ extern void grpc_resolver_dns_native_init(void);
 extern void grpc_resolver_dns_native_shutdown(void);
 extern void grpc_resolver_sockaddr_init(void);
 extern void grpc_resolver_sockaddr_shutdown(void);
-extern void grpc_load_reporting_plugin_init(void);
-extern void grpc_load_reporting_plugin_shutdown(void);
+extern void grpc_server_load_reporting_plugin_init(void);
+extern void grpc_server_load_reporting_plugin_shutdown(void);
 extern void census_grpc_plugin_init(void);
 extern void census_grpc_plugin_shutdown(void);
 extern void grpc_max_age_filter_init(void);
@@ -82,8 +82,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_resolver_dns_native_shutdown);
   grpc_register_plugin(grpc_resolver_sockaddr_init,
                        grpc_resolver_sockaddr_shutdown);
-  grpc_register_plugin(grpc_load_reporting_plugin_init,
-                       grpc_load_reporting_plugin_shutdown);
+  grpc_register_plugin(grpc_server_load_reporting_plugin_init,
+                       grpc_server_load_reporting_plugin_shutdown);
   grpc_register_plugin(census_grpc_plugin_init,
                        census_grpc_plugin_shutdown);
   grpc_register_plugin(grpc_max_age_filter_init,
diff --git a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
index 7eb599d81a..7b90d796d5 100644
--- a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
@@ -36,8 +36,8 @@ extern void grpc_resolver_sockaddr_init(void);
 extern void grpc_resolver_sockaddr_shutdown(void);
 extern void grpc_resolver_fake_init(void);
 extern void grpc_resolver_fake_shutdown(void);
-extern void grpc_load_reporting_plugin_init(void);
-extern void grpc_load_reporting_plugin_shutdown(void);
+extern void grpc_server_load_reporting_plugin_init(void);
+extern void grpc_server_load_reporting_plugin_shutdown(void);
 extern void grpc_lb_policy_grpclb_init(void);
 extern void grpc_lb_policy_grpclb_shutdown(void);
 extern void grpc_lb_policy_pick_first_init(void);
@@ -72,8 +72,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_resolver_sockaddr_shutdown);
   grpc_register_plugin(grpc_resolver_fake_init,
                        grpc_resolver_fake_shutdown);
-  grpc_register_plugin(grpc_load_reporting_plugin_init,
-                       grpc_load_reporting_plugin_shutdown);
+  grpc_register_plugin(grpc_server_load_reporting_plugin_init,
+                       grpc_server_load_reporting_plugin_shutdown);
   grpc_register_plugin(grpc_lb_policy_grpclb_init,
                        grpc_lb_policy_grpclb_shutdown);
   grpc_register_plugin(grpc_lb_policy_pick_first_init,
diff --git a/src/core/tsi/fake_transport_security.c b/src/core/tsi/fake_transport_security.c
index 967126ecee..64043fea08 100644
--- a/src/core/tsi/fake_transport_security.c
+++ b/src/core/tsi/fake_transport_security.c
@@ -25,7 +25,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/useful.h>
-#include "src/core/tsi/transport_security.h"
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/tsi/transport_security_grpc.h"
 
 /* --- Constants. ---*/
 #define TSI_FAKE_FRAME_HEADER_SIZE 4
@@ -74,6 +75,14 @@ typedef struct {
   size_t max_frame_size;
 } tsi_fake_frame_protector;
 
+typedef struct {
+  tsi_zero_copy_grpc_protector base;
+  grpc_slice_buffer header_sb;
+  grpc_slice_buffer protected_sb;
+  size_t max_frame_size;
+  size_t parsed_frame_size;
+} tsi_fake_zero_copy_grpc_protector;
+
 /* --- Utils. ---*/
 
 static const char *tsi_fake_handshake_message_strings[] = {
@@ -113,6 +122,28 @@ static void store32_little_endian(uint32_t value, unsigned char *buf) {
   buf[0] = (unsigned char)((value)&0xFF);
 }
 
+static uint32_t read_frame_size(const grpc_slice_buffer *sb) {
+  GPR_ASSERT(sb != NULL && sb->length >= TSI_FAKE_FRAME_HEADER_SIZE);
+  uint8_t frame_size_buffer[TSI_FAKE_FRAME_HEADER_SIZE];
+  uint8_t *buf = frame_size_buffer;
+  /* Copies the first 4 bytes to a temporary buffer.  */
+  size_t remaining = TSI_FAKE_FRAME_HEADER_SIZE;
+  for (size_t i = 0; i < sb->count; i++) {
+    size_t slice_length = GRPC_SLICE_LENGTH(sb->slices[i]);
+    if (remaining <= slice_length) {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), remaining);
+      remaining = 0;
+      break;
+    } else {
+      memcpy(buf, GRPC_SLICE_START_PTR(sb->slices[i]), slice_length);
+      buf += slice_length;
+      remaining -= slice_length;
+    }
+  }
+  GPR_ASSERT(remaining == 0);
+  return load32_little_endian(frame_size_buffer);
+}
+
 static void tsi_fake_frame_reset(tsi_fake_frame *frame, int needs_draining) {
   frame->offset = 0;
   frame->needs_draining = needs_draining;
@@ -363,6 +394,84 @@ static const tsi_frame_protector_vtable frame_protector_vtable = {
     fake_protector_unprotect, fake_protector_destroy,
 };
 
+/* --- tsi_zero_copy_grpc_protector methods implementation. ---*/
+
+static tsi_result fake_zero_copy_grpc_protector_protect(
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *unprotected_slices,
+    grpc_slice_buffer *protected_slices) {
+  if (self == NULL || unprotected_slices == NULL || protected_slices == NULL) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_fake_zero_copy_grpc_protector *impl =
+      (tsi_fake_zero_copy_grpc_protector *)self;
+  /* Protects each frame. */
+  while (unprotected_slices->length > 0) {
+    size_t frame_length =
+        GPR_MIN(impl->max_frame_size,
+                unprotected_slices->length + TSI_FAKE_FRAME_HEADER_SIZE);
+    grpc_slice slice = GRPC_SLICE_MALLOC(TSI_FAKE_FRAME_HEADER_SIZE);
+    store32_little_endian((uint32_t)frame_length, GRPC_SLICE_START_PTR(slice));
+    grpc_slice_buffer_add(protected_slices, slice);
+    size_t data_length = frame_length - TSI_FAKE_FRAME_HEADER_SIZE;
+    grpc_slice_buffer_move_first(unprotected_slices, data_length,
+                                 protected_slices);
+  }
+  return TSI_OK;
+}
+
+static tsi_result fake_zero_copy_grpc_protector_unprotect(
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *protected_slices,
+    grpc_slice_buffer *unprotected_slices) {
+  if (self == NULL || unprotected_slices == NULL || protected_slices == NULL) {
+    return TSI_INVALID_ARGUMENT;
+  }
+  tsi_fake_zero_copy_grpc_protector *impl =
+      (tsi_fake_zero_copy_grpc_protector *)self;
+  grpc_slice_buffer_move_into(protected_slices, &impl->protected_sb);
+  /* Unprotect each frame, if we get a full frame. */
+  while (impl->protected_sb.length >= TSI_FAKE_FRAME_HEADER_SIZE) {
+    if (impl->parsed_frame_size == 0) {
+      impl->parsed_frame_size = read_frame_size(&impl->protected_sb);
+      if (impl->parsed_frame_size <= 4) {
+        gpr_log(GPR_ERROR, "Invalid frame size.");
+        return TSI_DATA_CORRUPTED;
+      }
+    }
+    /* If we do not have a full frame, return with OK status. */
+    if (impl->protected_sb.length < impl->parsed_frame_size) break;
+    /* Strips header bytes. */
+    grpc_slice_buffer_move_first(&impl->protected_sb,
+                                 TSI_FAKE_FRAME_HEADER_SIZE, &impl->header_sb);
+    /* Moves data to unprotected slices. */
+    grpc_slice_buffer_move_first(
+        &impl->protected_sb,
+        impl->parsed_frame_size - TSI_FAKE_FRAME_HEADER_SIZE,
+        unprotected_slices);
+    impl->parsed_frame_size = 0;
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx, &impl->header_sb);
+  }
+  return TSI_OK;
+}
+
+static void fake_zero_copy_grpc_protector_destroy(
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self) {
+  if (self == NULL) return;
+  tsi_fake_zero_copy_grpc_protector *impl =
+      (tsi_fake_zero_copy_grpc_protector *)self;
+  grpc_slice_buffer_destroy_internal(exec_ctx, &impl->header_sb);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &impl->protected_sb);
+  gpr_free(impl);
+}
+
+static const tsi_zero_copy_grpc_protector_vtable
+    zero_copy_grpc_protector_vtable = {
+        fake_zero_copy_grpc_protector_protect,
+        fake_zero_copy_grpc_protector_unprotect,
+        fake_zero_copy_grpc_protector_destroy,
+};
+
 /* --- tsi_handshaker_result methods implementation. ---*/
 
 typedef struct {
@@ -383,6 +492,15 @@ static tsi_result fake_handshaker_result_extract_peer(
   return result;
 }
 
+static tsi_result fake_handshaker_result_create_zero_copy_grpc_protector(
+    void *exec_ctx, const tsi_handshaker_result *self,
+    size_t *max_output_protected_frame_size,
+    tsi_zero_copy_grpc_protector **protector) {
+  *protector =
+      tsi_create_fake_zero_copy_grpc_protector(max_output_protected_frame_size);
+  return TSI_OK;
+}
+
 static tsi_result fake_handshaker_result_create_frame_protector(
     const tsi_handshaker_result *self, size_t *max_output_protected_frame_size,
     tsi_frame_protector **protector) {
@@ -407,7 +525,7 @@ static void fake_handshaker_result_destroy(tsi_handshaker_result *self) {
 
 static const tsi_handshaker_result_vtable handshaker_result_vtable = {
     fake_handshaker_result_extract_peer,
-    NULL, /* create_zero_copy_grpc_protector */
+    fake_handshaker_result_create_zero_copy_grpc_protector,
     fake_handshaker_result_create_frame_protector,
     fake_handshaker_result_get_unused_bytes,
     fake_handshaker_result_destroy,
@@ -631,3 +749,16 @@ tsi_frame_protector *tsi_create_fake_frame_protector(
   impl->base.vtable = &frame_protector_vtable;
   return &impl->base;
 }
+
+tsi_zero_copy_grpc_protector *tsi_create_fake_zero_copy_grpc_protector(
+    size_t *max_protected_frame_size) {
+  tsi_fake_zero_copy_grpc_protector *impl = gpr_zalloc(sizeof(*impl));
+  grpc_slice_buffer_init(&impl->header_sb);
+  grpc_slice_buffer_init(&impl->protected_sb);
+  impl->max_frame_size = (max_protected_frame_size == NULL)
+                             ? TSI_FAKE_DEFAULT_FRAME_SIZE
+                             : *max_protected_frame_size;
+  impl->parsed_frame_size = 0;
+  impl->base.vtable = &zero_copy_grpc_protector_vtable;
+  return &impl->base;
+}
diff --git a/src/core/tsi/fake_transport_security.h b/src/core/tsi/fake_transport_security.h
index 934b3cbeb2..6159708a84 100644
--- a/src/core/tsi/fake_transport_security.h
+++ b/src/core/tsi/fake_transport_security.h
@@ -39,6 +39,11 @@ tsi_handshaker *tsi_create_fake_handshaker(int is_client);
 tsi_frame_protector *tsi_create_fake_frame_protector(
     size_t *max_protected_frame_size);
 
+/* Creates a zero-copy protector directly without going through the handshake
+ * phase. */
+tsi_zero_copy_grpc_protector *tsi_create_fake_zero_copy_grpc_protector(
+    size_t *max_protected_frame_size);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/core/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
index 1fd65928f9..7ebf9dd96f 100644
--- a/src/core/tsi/ssl_transport_security.c
+++ b/src/core/tsi/ssl_transport_security.c
@@ -67,7 +67,13 @@
 
 /* --- Structure definitions. ---*/
 
+struct tsi_ssl_handshaker_factory {
+  const tsi_ssl_handshaker_factory_vtable *vtable;
+  gpr_refcount refcount;
+};
+
 struct tsi_ssl_client_handshaker_factory {
+  tsi_ssl_handshaker_factory base;
   SSL_CTX *ssl_context;
   unsigned char *alpn_protocol_list;
   size_t alpn_protocol_list_length;
@@ -77,6 +83,7 @@ struct tsi_ssl_server_handshaker_factory {
   /* Several contexts to support SNI.
      The tsi_peer array contains the subject names of the server certificates
      associated with the contexts at the same index.  */
+  tsi_ssl_handshaker_factory base;
   SSL_CTX **ssl_contexts;
   tsi_peer *ssl_context_x509_subject_names;
   size_t ssl_context_count;
@@ -90,6 +97,7 @@ typedef struct {
   BIO *into_ssl;
   BIO *from_ssl;
   tsi_result result;
+  tsi_ssl_handshaker_factory *factory_ref;
 } tsi_ssl_handshaker;
 
 typedef struct {
@@ -846,6 +854,47 @@ static const tsi_frame_protector_vtable frame_protector_vtable = {
     ssl_protector_destroy,
 };
 
+/* --- tsi_server_handshaker_factory methods implementation. --- */
+
+static void tsi_ssl_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory *self) {
+  if (self == NULL) return;
+
+  if (self->vtable != NULL && self->vtable->destroy != NULL) {
+    self->vtable->destroy(self);
+  }
+  /* Note, we don't free(self) here because this object is always directly
+   * embedded in another object. If tsi_ssl_handshaker_factory_init allocates
+   * any memory, it should be free'd here. */
+}
+
+static tsi_ssl_handshaker_factory *tsi_ssl_handshaker_factory_ref(
+    tsi_ssl_handshaker_factory *self) {
+  if (self == NULL) return NULL;
+  gpr_refn(&self->refcount, 1);
+  return self;
+}
+
+static void tsi_ssl_handshaker_factory_unref(tsi_ssl_handshaker_factory *self) {
+  if (self == NULL) return;
+
+  if (gpr_unref(&self->refcount)) {
+    tsi_ssl_handshaker_factory_destroy(self);
+  }
+}
+
+static tsi_ssl_handshaker_factory_vtable handshaker_factory_vtable = {NULL};
+
+/* Initializes a tsi_ssl_handshaker_factory object. Caller is responsible for
+ * allocating memory for the factory. */
+static void tsi_ssl_handshaker_factory_init(
+    tsi_ssl_handshaker_factory *factory) {
+  GPR_ASSERT(factory != NULL);
+
+  factory->vtable = &handshaker_factory_vtable;
+  gpr_ref_init(&factory->refcount, 1);
+}
+
 /* --- tsi_handshaker methods implementation. ---*/
 
 static tsi_result ssl_handshaker_get_bytes_to_send_to_peer(tsi_handshaker *self,
@@ -1013,6 +1062,7 @@ static tsi_result ssl_handshaker_create_frame_protector(
 static void ssl_handshaker_destroy(tsi_handshaker *self) {
   tsi_ssl_handshaker *impl = (tsi_ssl_handshaker *)self;
   SSL_free(impl->ssl); /* The BIO objects are owned by ssl */
+  tsi_ssl_handshaker_factory_unref(impl->factory_ref);
   gpr_free(impl);
 }
 
@@ -1030,6 +1080,7 @@ static const tsi_handshaker_vtable handshaker_vtable = {
 
 static tsi_result create_tsi_ssl_handshaker(SSL_CTX *ctx, int is_client,
                                             const char *server_name_indication,
+                                            tsi_ssl_handshaker_factory *factory,
                                             tsi_handshaker **handshaker) {
   SSL *ssl = SSL_new(ctx);
   BIO *into_ssl = NULL;
@@ -1085,6 +1136,8 @@ static tsi_result create_tsi_ssl_handshaker(SSL_CTX *ctx, int is_client,
   impl->from_ssl = from_ssl;
   impl->result = TSI_HANDSHAKE_IN_PROGRESS;
   impl->base.vtable = &handshaker_vtable;
+  impl->factory_ref = tsi_ssl_handshaker_factory_ref(factory);
+
   *handshaker = &impl->base;
   return TSI_OK;
 }
@@ -1121,11 +1174,20 @@ tsi_result tsi_ssl_client_handshaker_factory_create_handshaker(
     tsi_ssl_client_handshaker_factory *self, const char *server_name_indication,
     tsi_handshaker **handshaker) {
   return create_tsi_ssl_handshaker(self->ssl_context, 1, server_name_indication,
-                                   handshaker);
+                                   &self->base, handshaker);
 }
 
-void tsi_ssl_client_handshaker_factory_destroy(
+void tsi_ssl_client_handshaker_factory_unref(
     tsi_ssl_client_handshaker_factory *self) {
+  if (self == NULL) return;
+  tsi_ssl_handshaker_factory_unref(&self->base);
+}
+
+static void tsi_ssl_client_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory *factory) {
+  if (factory == NULL) return;
+  tsi_ssl_client_handshaker_factory *self =
+      (tsi_ssl_client_handshaker_factory *)factory;
   if (self->ssl_context != NULL) SSL_CTX_free(self->ssl_context);
   if (self->alpn_protocol_list != NULL) gpr_free(self->alpn_protocol_list);
   gpr_free(self);
@@ -1150,11 +1212,21 @@ tsi_result tsi_ssl_server_handshaker_factory_create_handshaker(
   if (self->ssl_context_count == 0) return TSI_INVALID_ARGUMENT;
   /* Create the handshaker with the first context. We will switch if needed
      because of SNI in ssl_server_handshaker_factory_servername_callback.  */
-  return create_tsi_ssl_handshaker(self->ssl_contexts[0], 0, NULL, handshaker);
+  return create_tsi_ssl_handshaker(self->ssl_contexts[0], 0, NULL, &self->base,
+                                   handshaker);
 }
 
-void tsi_ssl_server_handshaker_factory_destroy(
+void tsi_ssl_server_handshaker_factory_unref(
     tsi_ssl_server_handshaker_factory *self) {
+  if (self == NULL) return;
+  tsi_ssl_handshaker_factory_unref(&self->base);
+}
+
+static void tsi_ssl_server_handshaker_factory_destroy(
+    tsi_ssl_handshaker_factory *factory) {
+  if (factory == NULL) return;
+  tsi_ssl_server_handshaker_factory *self =
+      (tsi_ssl_server_handshaker_factory *)factory;
   size_t i;
   for (i = 0; i < self->ssl_context_count; i++) {
     if (self->ssl_contexts[i] != NULL) {
@@ -1263,6 +1335,9 @@ static int server_handshaker_factory_npn_advertised_callback(
 
 /* --- tsi_ssl_handshaker_factory constructors. --- */
 
+static tsi_ssl_handshaker_factory_vtable client_handshaker_factory_vtable = {
+    tsi_ssl_client_handshaker_factory_destroy};
+
 tsi_result tsi_create_ssl_client_handshaker_factory(
     const tsi_ssl_pem_key_cert_pair *pem_key_cert_pair,
     const char *pem_root_certs, const char *cipher_suites,
@@ -1285,6 +1360,9 @@ tsi_result tsi_create_ssl_client_handshaker_factory(
   }
 
   impl = gpr_zalloc(sizeof(*impl));
+  tsi_ssl_handshaker_factory_init(&impl->base);
+  impl->base.vtable = &client_handshaker_factory_vtable;
+
   impl->ssl_context = ssl_context;
 
   do {
@@ -1322,7 +1400,7 @@ tsi_result tsi_create_ssl_client_handshaker_factory(
     }
   } while (0);
   if (result != TSI_OK) {
-    tsi_ssl_client_handshaker_factory_destroy(impl);
+    tsi_ssl_handshaker_factory_unref(&impl->base);
     return result;
   }
   SSL_CTX_set_verify(ssl_context, SSL_VERIFY_PEER, NULL);
@@ -1332,6 +1410,9 @@ tsi_result tsi_create_ssl_client_handshaker_factory(
   return TSI_OK;
 }
 
+static tsi_ssl_handshaker_factory_vtable server_handshaker_factory_vtable = {
+    tsi_ssl_server_handshaker_factory_destroy};
+
 tsi_result tsi_create_ssl_server_handshaker_factory(
     const tsi_ssl_pem_key_cert_pair *pem_key_cert_pairs,
     size_t num_key_cert_pairs, const char *pem_client_root_certs,
@@ -1364,12 +1445,15 @@ tsi_result tsi_create_ssl_server_handshaker_factory_ex(
   }
 
   impl = gpr_zalloc(sizeof(*impl));
+  tsi_ssl_handshaker_factory_init(&impl->base);
+  impl->base.vtable = &server_handshaker_factory_vtable;
+
   impl->ssl_contexts = gpr_zalloc(num_key_cert_pairs * sizeof(SSL_CTX *));
   impl->ssl_context_x509_subject_names =
       gpr_zalloc(num_key_cert_pairs * sizeof(tsi_peer));
   if (impl->ssl_contexts == NULL ||
       impl->ssl_context_x509_subject_names == NULL) {
-    tsi_ssl_server_handshaker_factory_destroy(impl);
+    tsi_ssl_handshaker_factory_unref(&impl->base);
     return TSI_OUT_OF_RESOURCES;
   }
   impl->ssl_context_count = num_key_cert_pairs;
@@ -1379,7 +1463,7 @@ tsi_result tsi_create_ssl_server_handshaker_factory_ex(
                                            &impl->alpn_protocol_list,
                                            &impl->alpn_protocol_list_length);
     if (result != TSI_OK) {
-      tsi_ssl_server_handshaker_factory_destroy(impl);
+      tsi_ssl_handshaker_factory_unref(&impl->base);
       return result;
     }
   }
@@ -1451,10 +1535,11 @@ tsi_result tsi_create_ssl_server_handshaker_factory_ex(
     } while (0);
 
     if (result != TSI_OK) {
-      tsi_ssl_server_handshaker_factory_destroy(impl);
+      tsi_ssl_handshaker_factory_unref(&impl->base);
       return result;
     }
   }
+
   *factory = impl;
   return TSI_OK;
 }
@@ -1501,3 +1586,15 @@ int tsi_ssl_peer_matches_name(const tsi_peer *peer, const char *name) {
 
   return 0; /* Not found. */
 }
+
+/* --- Testing support. --- */
+const tsi_ssl_handshaker_factory_vtable *tsi_ssl_handshaker_factory_swap_vtable(
+    tsi_ssl_handshaker_factory *factory,
+    tsi_ssl_handshaker_factory_vtable *new_vtable) {
+  GPR_ASSERT(factory != NULL);
+  GPR_ASSERT(factory->vtable != NULL);
+
+  const tsi_ssl_handshaker_factory_vtable *orig_vtable = factory->vtable;
+  factory->vtable = new_vtable;
+  return orig_vtable;
+}
diff --git a/src/core/tsi/ssl_transport_security.h b/src/core/tsi/ssl_transport_security.h
index 177599930b..3abfdf5ed8 100644
--- a/src/core/tsi/ssl_transport_security.h
+++ b/src/core/tsi/ssl_transport_security.h
@@ -96,10 +96,10 @@ tsi_result tsi_ssl_client_handshaker_factory_create_handshaker(
     tsi_ssl_client_handshaker_factory *self, const char *server_name_indication,
     tsi_handshaker **handshaker);
 
-/* Destroys the handshaker factory. WARNING: it is unsafe to destroy a factory
-   while handshakers created with this factory are still in use.  */
-void tsi_ssl_client_handshaker_factory_destroy(
-    tsi_ssl_client_handshaker_factory *self);
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_client_handshaker_factory_unref(
+    tsi_ssl_client_handshaker_factory *factory);
 
 /* --- tsi_ssl_server_handshaker_factory object ---
 
@@ -158,9 +158,9 @@ tsi_result tsi_create_ssl_server_handshaker_factory_ex(
 tsi_result tsi_ssl_server_handshaker_factory_create_handshaker(
     tsi_ssl_server_handshaker_factory *self, tsi_handshaker **handshaker);
 
-/* Destroys the handshaker factory. WARNING: it is unsafe to destroy a factory
-   while handshakers created with this factory are still in use.  */
-void tsi_ssl_server_handshaker_factory_destroy(
+/* Decrements reference count of the handshaker factory. Handshaker factory will
+ * be destroyed once no references exist. */
+void tsi_ssl_server_handshaker_factory_unref(
     tsi_ssl_server_handshaker_factory *self);
 
 /* Util that checks that an ssl peer matches a specific name.
@@ -170,6 +170,29 @@ void tsi_ssl_server_handshaker_factory_destroy(
    - handle public suffix wildchar more strictly (e.g. *.co.uk) */
 int tsi_ssl_peer_matches_name(const tsi_peer *peer, const char *name);
 
+/* --- Testing support. ---
+
+   These functions and typedefs are not intended to be used outside of testing.
+   */
+
+/* Base type of client and server handshaker factories. */
+typedef struct tsi_ssl_handshaker_factory tsi_ssl_handshaker_factory;
+
+/* Function pointer to handshaker_factory destructor. */
+typedef void (*tsi_ssl_handshaker_factory_destructor)(
+    tsi_ssl_handshaker_factory *factory);
+
+/* Virtual table for tsi_ssl_handshaker_factory. */
+typedef struct {
+  tsi_ssl_handshaker_factory_destructor destroy;
+} tsi_ssl_handshaker_factory_vtable;
+
+/* Set destructor of handshaker_factory to new_destructor, returns previous
+   destructor. */
+const tsi_ssl_handshaker_factory_vtable *tsi_ssl_handshaker_factory_swap_vtable(
+    tsi_ssl_handshaker_factory *factory,
+    tsi_ssl_handshaker_factory_vtable *new_vtable);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/core/tsi/test_creds/BUILD b/src/core/tsi/test_creds/BUILD
index 4b0786d7b8..732f6d91b2 100644
--- a/src/core/tsi/test_creds/BUILD
+++ b/src/core/tsi/test_creds/BUILD
@@ -15,7 +15,15 @@
 licenses(["notice"])  # Apache v2
 
 exports_files([
-    "ca.pem",
-    "server1.key",
-    "server1.pem",
+        "ca.pem",
+        "server1.key",
+        "server1.pem",
+        "server0.key",
+        "server0.pem",
+        "client.key",
+        "client.pem",
+        "badserver.key",
+        "badserver.pem",
+        "badclient.key",
+        "badclient.pem",
 ])
diff --git a/src/core/tsi/transport_security.h b/src/core/tsi/transport_security.h
index b0d7039850..3bba38149c 100644
--- a/src/core/tsi/transport_security.h
+++ b/src/core/tsi/transport_security.h
@@ -84,11 +84,17 @@ struct tsi_handshaker {
 };
 
 /* Base for tsi_handshaker_result implementations.
-   See transport_security_interface.h for documentation. */
+   See transport_security_interface.h for documentation.
+   The exec_ctx parameter in create_zero_copy_grpc_protector is supposed to be
+   of type grpc_exec_ctx*, but we're using void* instead to avoid making the TSI
+   API depend on grpc. The create_zero_copy_grpc_protector() method is only used
+   in grpc, where we do need the exec_ctx passed through, but the API still
+   needs to compile in other applications, where grpc_exec_ctx is not defined.
+*/
 typedef struct {
   tsi_result (*extract_peer)(const tsi_handshaker_result *self, tsi_peer *peer);
   tsi_result (*create_zero_copy_grpc_protector)(
-      const tsi_handshaker_result *self,
+      void *exec_ctx, const tsi_handshaker_result *self,
       size_t *max_output_protected_frame_size,
       tsi_zero_copy_grpc_protector **protector);
   tsi_result (*create_frame_protector)(const tsi_handshaker_result *self,
diff --git a/src/core/tsi/transport_security_grpc.c b/src/core/tsi/transport_security_grpc.c
index 5bcfdfa61f..affd995230 100644
--- a/src/core/tsi/transport_security_grpc.c
+++ b/src/core/tsi/transport_security_grpc.c
@@ -20,16 +20,18 @@
 
 /* This method creates a tsi_zero_copy_grpc_protector object.  */
 tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
-    const tsi_handshaker_result *self, size_t *max_output_protected_frame_size,
+    grpc_exec_ctx *exec_ctx, const tsi_handshaker_result *self,
+    size_t *max_output_protected_frame_size,
     tsi_zero_copy_grpc_protector **protector) {
-  if (self == NULL || self->vtable == NULL || protector == NULL) {
+  if (exec_ctx == NULL || self == NULL || self->vtable == NULL ||
+      protector == NULL) {
     return TSI_INVALID_ARGUMENT;
   }
   if (self->vtable->create_zero_copy_grpc_protector == NULL) {
     return TSI_UNIMPLEMENTED;
   }
   return self->vtable->create_zero_copy_grpc_protector(
-      self, max_output_protected_frame_size, protector);
+      exec_ctx, self, max_output_protected_frame_size, protector);
 }
 
 /* --- tsi_zero_copy_grpc_protector common implementation. ---
@@ -37,28 +39,33 @@ tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
    Calls specific implementation after state/input validation. */
 
 tsi_result tsi_zero_copy_grpc_protector_protect(
-    tsi_zero_copy_grpc_protector *self, grpc_slice_buffer *unprotected_slices,
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *unprotected_slices,
     grpc_slice_buffer *protected_slices) {
-  if (self == NULL || self->vtable == NULL || unprotected_slices == NULL ||
-      protected_slices == NULL) {
+  if (exec_ctx == NULL || self == NULL || self->vtable == NULL ||
+      unprotected_slices == NULL || protected_slices == NULL) {
     return TSI_INVALID_ARGUMENT;
   }
   if (self->vtable->protect == NULL) return TSI_UNIMPLEMENTED;
-  return self->vtable->protect(self, unprotected_slices, protected_slices);
+  return self->vtable->protect(exec_ctx, self, unprotected_slices,
+                               protected_slices);
 }
 
 tsi_result tsi_zero_copy_grpc_protector_unprotect(
-    tsi_zero_copy_grpc_protector *self, grpc_slice_buffer *protected_slices,
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *protected_slices,
     grpc_slice_buffer *unprotected_slices) {
-  if (self == NULL || self->vtable == NULL || protected_slices == NULL ||
-      unprotected_slices == NULL) {
+  if (exec_ctx == NULL || self == NULL || self->vtable == NULL ||
+      protected_slices == NULL || unprotected_slices == NULL) {
     return TSI_INVALID_ARGUMENT;
   }
   if (self->vtable->unprotect == NULL) return TSI_UNIMPLEMENTED;
-  return self->vtable->unprotect(self, protected_slices, unprotected_slices);
+  return self->vtable->unprotect(exec_ctx, self, protected_slices,
+                                 unprotected_slices);
 }
 
-void tsi_zero_copy_grpc_protector_destroy(tsi_zero_copy_grpc_protector *self) {
+void tsi_zero_copy_grpc_protector_destroy(grpc_exec_ctx *exec_ctx,
+                                          tsi_zero_copy_grpc_protector *self) {
   if (self == NULL) return;
-  self->vtable->destroy(self);
+  self->vtable->destroy(exec_ctx, self);
 }
diff --git a/src/core/tsi/transport_security_grpc.h b/src/core/tsi/transport_security_grpc.h
index 5ab5297cc4..ca6755c12f 100644
--- a/src/core/tsi/transport_security_grpc.h
+++ b/src/core/tsi/transport_security_grpc.h
@@ -30,7 +30,8 @@ extern "C" {
    assuming there is no fatal error.
    The caller is responsible for destroying the protector.  */
 tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
-    const tsi_handshaker_result *self, size_t *max_output_protected_frame_size,
+    grpc_exec_ctx *exec_ctx, const tsi_handshaker_result *self,
+    size_t *max_output_protected_frame_size,
     tsi_zero_copy_grpc_protector **protector);
 
 /* -- tsi_zero_copy_grpc_protector object --  */
@@ -42,8 +43,8 @@ tsi_result tsi_handshaker_result_create_zero_copy_grpc_protector(
    - This method returns TSI_OK in case of success or a specific error code in
      case of failure.  */
 tsi_result tsi_zero_copy_grpc_protector_protect(
-    tsi_zero_copy_grpc_protector *self, grpc_slice_buffer *unprotected_slices,
-    grpc_slice_buffer *protected_slices);
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *unprotected_slices, grpc_slice_buffer *protected_slices);
 
 /* Outputs unprotected bytes.
    - protected_slices is the bytes of protected frames.
@@ -52,21 +53,24 @@ tsi_result tsi_zero_copy_grpc_protector_protect(
      there is not enough data to output in which case unprotected_slices has 0
      bytes.  */
 tsi_result tsi_zero_copy_grpc_protector_unprotect(
-    tsi_zero_copy_grpc_protector *self, grpc_slice_buffer *protected_slices,
-    grpc_slice_buffer *unprotected_slices);
+    grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self,
+    grpc_slice_buffer *protected_slices, grpc_slice_buffer *unprotected_slices);
 
 /* Destroys the tsi_zero_copy_grpc_protector object.  */
-void tsi_zero_copy_grpc_protector_destroy(tsi_zero_copy_grpc_protector *self);
+void tsi_zero_copy_grpc_protector_destroy(grpc_exec_ctx *exec_ctx,
+                                          tsi_zero_copy_grpc_protector *self);
 
 /* Base for tsi_zero_copy_grpc_protector implementations.  */
 typedef struct {
-  tsi_result (*protect)(tsi_zero_copy_grpc_protector *self,
+  tsi_result (*protect)(grpc_exec_ctx *exec_ctx,
+                        tsi_zero_copy_grpc_protector *self,
                         grpc_slice_buffer *unprotected_slices,
                         grpc_slice_buffer *protected_slices);
-  tsi_result (*unprotect)(tsi_zero_copy_grpc_protector *self,
+  tsi_result (*unprotect)(grpc_exec_ctx *exec_ctx,
+                          tsi_zero_copy_grpc_protector *self,
                           grpc_slice_buffer *protected_slices,
                           grpc_slice_buffer *unprotected_slices);
-  void (*destroy)(tsi_zero_copy_grpc_protector *self);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, tsi_zero_copy_grpc_protector *self);
 } tsi_zero_copy_grpc_protector_vtable;
 
 struct tsi_zero_copy_grpc_protector {
diff --git a/src/cpp/client/channel_cc.cc b/src/cpp/client/channel_cc.cc
index f2d9bb07c9..19a25c838f 100644
--- a/src/cpp/client/channel_cc.cc
+++ b/src/cpp/client/channel_cc.cc
@@ -18,7 +18,10 @@
 
 #include <grpc++/channel.h>
 
+#include <chrono>
+#include <condition_variable>
 #include <memory>
+#include <mutex>
 
 #include <grpc++/client_context.h>
 #include <grpc++/completion_queue.h>
@@ -35,17 +38,197 @@
 #include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
 
 namespace grpc {
 
+namespace {
+int kConnectivityCheckIntervalMsec = 500;
+void WatchStateChange(void* arg);
+
+class TagSaver final : public CompletionQueueTag {
+ public:
+  explicit TagSaver(void* tag) : tag_(tag) {}
+  ~TagSaver() override {}
+  bool FinalizeResult(void** tag, bool* status) override {
+    *tag = tag_;
+    delete this;
+    return true;
+  }
+
+ private:
+  void* tag_;
+};
+
+// Constantly watches channel connectivity status to reconnect a transiently
+// disconnected channel. This is a temporary work-around before we have retry
+// support.
+class ChannelConnectivityWatcher : private GrpcLibraryCodegen {
+ public:
+  static void StartWatching(grpc_channel* channel) {
+    if (!IsDisabled()) {
+      std::unique_lock<std::mutex> lock(g_watcher_mu_);
+      if (g_watcher_ == nullptr) {
+        g_watcher_ = new ChannelConnectivityWatcher();
+      }
+      g_watcher_->StartWatchingLocked(channel);
+    }
+  }
+
+  static void StopWatching() {
+    if (!IsDisabled()) {
+      std::unique_lock<std::mutex> lock(g_watcher_mu_);
+      if (g_watcher_->StopWatchingLocked()) {
+        delete g_watcher_;
+        g_watcher_ = nullptr;
+      }
+    }
+  }
+
+ private:
+  ChannelConnectivityWatcher() : channel_count_(0), shutdown_(false) {
+    gpr_ref_init(&ref_, 0);
+    gpr_thd_options options = gpr_thd_options_default();
+    gpr_thd_options_set_joinable(&options);
+    gpr_thd_new(&thd_id_, &WatchStateChange, this, &options);
+  }
+
+  static bool IsDisabled() {
+    char* env = gpr_getenv("GRPC_DISABLE_CHANNEL_CONNECTIVITY_WATCHER");
+    bool disabled = gpr_is_true(env);
+    gpr_free(env);
+    return disabled;
+  }
+
+  void WatchStateChangeImpl() {
+    bool ok = false;
+    void* tag = NULL;
+    CompletionQueue::NextStatus status = CompletionQueue::GOT_EVENT;
+    while (true) {
+      {
+        std::unique_lock<std::mutex> lock(shutdown_mu_);
+        if (shutdown_) {
+          // Drain cq_ if the watcher is shutting down
+          status = cq_.AsyncNext(&tag, &ok, gpr_inf_future(GPR_CLOCK_REALTIME));
+        } else {
+          status = cq_.AsyncNext(&tag, &ok, gpr_inf_past(GPR_CLOCK_REALTIME));
+          // Make sure we've seen 2 TIMEOUTs before going to sleep
+          if (status == CompletionQueue::TIMEOUT) {
+            status = cq_.AsyncNext(&tag, &ok, gpr_inf_past(GPR_CLOCK_REALTIME));
+            if (status == CompletionQueue::TIMEOUT) {
+              shutdown_cv_.wait_for(lock, std::chrono::milliseconds(
+                                              kConnectivityCheckIntervalMsec));
+              continue;
+            }
+          }
+        }
+      }
+      ChannelState* channel_state = static_cast<ChannelState*>(tag);
+      channel_state->state =
+          grpc_channel_check_connectivity_state(channel_state->channel, false);
+      if (channel_state->state == GRPC_CHANNEL_SHUTDOWN) {
+        void* shutdown_tag = NULL;
+        channel_state->shutdown_cq.Next(&shutdown_tag, &ok);
+        delete channel_state;
+        if (gpr_unref(&ref_)) {
+          break;
+        }
+      } else {
+        TagSaver* tag_saver = new TagSaver(channel_state);
+        grpc_channel_watch_connectivity_state(
+            channel_state->channel, channel_state->state,
+            gpr_inf_future(GPR_CLOCK_REALTIME), cq_.cq(), tag_saver);
+      }
+    }
+  }
+
+  void StartWatchingLocked(grpc_channel* channel) {
+    if (thd_id_ != 0) {
+      gpr_ref(&ref_);
+      ++channel_count_;
+      ChannelState* channel_state = new ChannelState(channel);
+      // The first grpc_channel_watch_connectivity_state() is not used to
+      // monitor the channel state change, but to hold a reference of the
+      // c channel. So that WatchStateChangeImpl() can observe state ==
+      // GRPC_CHANNEL_SHUTDOWN before the channel gets destroyed.
+      grpc_channel_watch_connectivity_state(
+          channel_state->channel, channel_state->state,
+          gpr_inf_future(GPR_CLOCK_REALTIME), channel_state->shutdown_cq.cq(),
+          new TagSaver(nullptr));
+      grpc_channel_watch_connectivity_state(
+          channel_state->channel, channel_state->state,
+          gpr_inf_future(GPR_CLOCK_REALTIME), cq_.cq(),
+          new TagSaver(channel_state));
+    }
+  }
+
+  bool StopWatchingLocked() {
+    if (--channel_count_ == 0) {
+      {
+        std::unique_lock<std::mutex> lock(shutdown_mu_);
+        shutdown_ = true;
+        shutdown_cv_.notify_one();
+      }
+      gpr_thd_join(thd_id_);
+      return true;
+    }
+    return false;
+  }
+
+  friend void WatchStateChange(void* arg);
+  struct ChannelState {
+    explicit ChannelState(grpc_channel* channel)
+        : channel(channel), state(GRPC_CHANNEL_IDLE){};
+    grpc_channel* channel;
+    grpc_connectivity_state state;
+    CompletionQueue shutdown_cq;
+  };
+  gpr_thd_id thd_id_;
+  CompletionQueue cq_;
+  gpr_refcount ref_;
+  int channel_count_;
+
+  std::mutex shutdown_mu_;
+  std::condition_variable shutdown_cv_;  // protected by shutdown_mu_
+  bool shutdown_;                        // protected by shutdown_mu_
+
+  static std::mutex g_watcher_mu_;
+  static ChannelConnectivityWatcher* g_watcher_;  // protected by g_watcher_mu_
+};
+
+std::mutex ChannelConnectivityWatcher::g_watcher_mu_;
+ChannelConnectivityWatcher* ChannelConnectivityWatcher::g_watcher_ = nullptr;
+
+void WatchStateChange(void* arg) {
+  ChannelConnectivityWatcher* watcher =
+      static_cast<ChannelConnectivityWatcher*>(arg);
+  watcher->WatchStateChangeImpl();
+}
+}  // namespace
+
 static internal::GrpcLibraryInitializer g_gli_initializer;
 Channel::Channel(const grpc::string& host, grpc_channel* channel)
     : host_(host), c_channel_(channel) {
   g_gli_initializer.summon();
+  if (grpc_channel_support_connectivity_watcher(channel)) {
+    ChannelConnectivityWatcher::StartWatching(channel);
+  }
 }
 
-Channel::~Channel() { grpc_channel_destroy(c_channel_); }
+Channel::~Channel() {
+  const bool stop_watching =
+      grpc_channel_support_connectivity_watcher(c_channel_);
+  grpc_channel_destroy(c_channel_);
+  if (stop_watching) {
+    ChannelConnectivityWatcher::StopWatching();
+  }
+}
 
 namespace {
 
@@ -130,23 +313,6 @@ grpc_connectivity_state Channel::GetState(bool try_to_connect) {
   return grpc_channel_check_connectivity_state(c_channel_, try_to_connect);
 }
 
-namespace {
-class TagSaver final : public CompletionQueueTag {
- public:
-  explicit TagSaver(void* tag) : tag_(tag) {}
-  ~TagSaver() override {}
-  bool FinalizeResult(void** tag, bool* status) override {
-    *tag = tag_;
-    delete this;
-    return true;
-  }
-
- private:
-  void* tag_;
-};
-
-}  // namespace
-
 void Channel::NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
                                       gpr_timespec deadline,
                                       CompletionQueue* cq, void* tag) {
diff --git a/src/cpp/client/client_context.cc b/src/cpp/client/client_context.cc
index 3af8bdc11a..40e95f3c05 100644
--- a/src/cpp/client/client_context.cc
+++ b/src/cpp/client/client_context.cc
@@ -96,7 +96,7 @@ void ClientContext::set_call(grpc_call* call,
 
 void ClientContext::set_compression_algorithm(
     grpc_compression_algorithm algorithm) {
-  char* algorithm_name = nullptr;
+  const char* algorithm_name = nullptr;
   if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
     gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",
             algorithm);
diff --git a/src/cpp/client/generic_stub.cc b/src/cpp/client/generic_stub.cc
index 66b1ef0e39..693b8bea56 100644
--- a/src/cpp/client/generic_stub.cc
+++ b/src/cpp/client/generic_stub.cc
@@ -22,14 +22,39 @@
 
 namespace grpc {
 
+namespace {
+std::unique_ptr<GenericClientAsyncReaderWriter> CallInternal(
+    ChannelInterface* channel, ClientContext* context,
+    const grpc::string& method, CompletionQueue* cq, bool start, void* tag) {
+  return std::unique_ptr<GenericClientAsyncReaderWriter>(
+      GenericClientAsyncReaderWriter::Create(
+          channel, cq, RpcMethod(method.c_str(), RpcMethod::BIDI_STREAMING),
+          context, start, tag));
+}
+
+}  // namespace
+
 // begin a call to a named method
 std::unique_ptr<GenericClientAsyncReaderWriter> GenericStub::Call(
     ClientContext* context, const grpc::string& method, CompletionQueue* cq,
     void* tag) {
-  return std::unique_ptr<GenericClientAsyncReaderWriter>(
-      GenericClientAsyncReaderWriter::Create(
-          channel_.get(), cq,
-          RpcMethod(method.c_str(), RpcMethod::BIDI_STREAMING), context, tag));
+  return CallInternal(channel_.get(), context, method, cq, true, tag);
+}
+
+// setup a call to a named method
+std::unique_ptr<GenericClientAsyncReaderWriter> GenericStub::PrepareCall(
+    ClientContext* context, const grpc::string& method, CompletionQueue* cq) {
+  return CallInternal(channel_.get(), context, method, cq, false, nullptr);
+}
+
+// setup a unary call to a named method
+std::unique_ptr<GenericClientAsyncResponseReader> GenericStub::PrepareUnaryCall(
+    ClientContext* context, const grpc::string& method,
+    const ByteBuffer& request, CompletionQueue* cq) {
+  return std::unique_ptr<GenericClientAsyncResponseReader>(
+      GenericClientAsyncResponseReader::Create(
+          channel_.get(), cq, RpcMethod(method.c_str(), RpcMethod::NORMAL_RPC),
+          context, request, false));
 }
 
 }  // namespace grpc
diff --git a/src/cpp/common/channel_filter.cc b/src/cpp/common/channel_filter.cc
index f870af0c67..ea44cff832 100644
--- a/src/cpp/common/channel_filter.cc
+++ b/src/cpp/common/channel_filter.cc
@@ -18,7 +18,9 @@
 
 #include <string.h>
 
+extern "C" {
 #include "src/core/lib/channel/channel_stack.h"
+}
 #include "src/cpp/common/channel_filter.h"
 
 #include <grpc++/impl/codegen/slice.h>
@@ -66,10 +68,6 @@ void CallData::SetPollsetOrPollsetSet(grpc_exec_ctx *exec_ctx,
   grpc_call_stack_ignore_set_pollset_or_pollset_set(exec_ctx, elem, pollent);
 }
 
-char *CallData::GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return grpc_call_next_get_peer(exec_ctx, elem);
-}
-
 // internal code used by RegisterChannelFilter()
 
 namespace internal {
diff --git a/src/cpp/common/channel_filter.h b/src/cpp/common/channel_filter.h
index 5d629f7c14..c1aeb3f724 100644
--- a/src/cpp/common/channel_filter.h
+++ b/src/cpp/common/channel_filter.h
@@ -26,9 +26,11 @@
 #include <functional>
 #include <vector>
 
+extern "C" {
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/transport/metadata_batch.h"
+}
 
 /// An interface to define filters.
 ///
@@ -193,6 +195,15 @@ class TransportStreamOpBatch {
     op_->payload->send_message.send_message = send_message;
   }
 
+  grpc_byte_stream **recv_message() const {
+    return op_->recv_message ? op_->payload->recv_message.recv_message
+                             : nullptr;
+  }
+  void set_recv_message(grpc_byte_stream **recv_message) {
+    op_->recv_message = true;
+    op_->payload->recv_message.recv_message = recv_message;
+  }
+
   census_context *get_census_context() const {
     return (census_context *)op_->payload->context[GRPC_CONTEXT_TRACING].value;
   }
@@ -257,9 +268,6 @@ class CallData {
   virtual void SetPollsetOrPollsetSet(grpc_exec_ctx *exec_ctx,
                                       grpc_call_element *elem,
                                       grpc_polling_entity *pollent);
-
-  /// Gets the peer name.
-  virtual char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
 };
 
 namespace internal {
@@ -338,11 +346,6 @@ class ChannelFilter final {
     CallDataType *call_data = reinterpret_cast<CallDataType *>(elem->call_data);
     call_data->SetPollsetOrPollsetSet(exec_ctx, elem, pollent);
   }
-
-  static char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-    CallDataType *call_data = reinterpret_cast<CallDataType *>(elem->call_data);
-    return call_data->GetPeer(exec_ctx, elem);
-  }
 };
 
 struct FilterRecord {
@@ -385,8 +388,7 @@ void RegisterChannelFilter(
        FilterType::call_data_size, FilterType::InitCallElement,
        FilterType::SetPollsetOrPollsetSet, FilterType::DestroyCallElement,
        FilterType::channel_data_size, FilterType::InitChannelElement,
-       FilterType::DestroyChannelElement, FilterType::GetPeer,
-       FilterType::GetChannelInfo, name}};
+       FilterType::DestroyChannelElement, FilterType::GetChannelInfo, name}};
   internal::channel_filters->push_back(filter_record);
 }
 
diff --git a/src/cpp/common/core_codegen.cc b/src/cpp/common/core_codegen.cc
index c7c6b6b13b..6ea5f1d3c7 100644
--- a/src/cpp/common/core_codegen.cc
+++ b/src/cpp/common/core_codegen.cc
@@ -89,6 +89,10 @@ int CoreCodegen::gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
 void CoreCodegen::gpr_cv_signal(gpr_cv* cv) { ::gpr_cv_signal(cv); }
 void CoreCodegen::gpr_cv_broadcast(gpr_cv* cv) { ::gpr_cv_broadcast(cv); }
 
+grpc_byte_buffer* CoreCodegen::grpc_byte_buffer_copy(grpc_byte_buffer* bb) {
+  return ::grpc_byte_buffer_copy(bb);
+}
+
 void CoreCodegen::grpc_byte_buffer_destroy(grpc_byte_buffer* bb) {
   ::grpc_byte_buffer_destroy(bb);
 }
diff --git a/src/cpp/server/health/default_health_check_service.cc b/src/cpp/server/health/default_health_check_service.cc
index 815b607032..d2cba6d662 100644
--- a/src/cpp/server/health/default_health_check_service.cc
+++ b/src/cpp/server/health/default_health_check_service.cc
@@ -20,6 +20,7 @@
 #include <mutex>
 
 #include <grpc++/impl/codegen/method_handler_impl.h>
+#include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
diff --git a/src/cpp/server/server_cc.cc b/src/cpp/server/server_cc.cc
index 2483300cb1..6bd3ecda32 100644
--- a/src/cpp/server/server_cc.cc
+++ b/src/cpp/server/server_cc.cc
@@ -17,6 +17,7 @@
 
 #include <grpc++/server.h>
 
+#include <cstdlib>
 #include <sstream>
 #include <utility>
 
@@ -38,6 +39,7 @@
 
 #include "src/core/ext/transport/inproc/inproc_transport.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/surface/call.h"
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/cpp/server/health/default_health_check_service.h"
 #include "src/cpp/thread_manager/thread_manager.h"
@@ -607,7 +609,12 @@ void Server::PerformOpsOnCall(CallOpSetInterface* ops, Call* call) {
   grpc_op cops[MAX_OPS];
   ops->FillOps(call->call(), cops, &nops);
   auto result = grpc_call_start_batch(call->call(), cops, nops, ops, nullptr);
-  GPR_ASSERT(GRPC_CALL_OK == result);
+  if (result != GRPC_CALL_OK) {
+    gpr_log(GPR_ERROR, "Fatal: grpc_call_start_batch returned %d", result);
+    grpc_call_log_batch(__FILE__, __LINE__, GPR_LOG_SEVERITY_ERROR,
+                        call->call(), cops, nops, ops);
+    abort();
+  }
 }
 
 ServerInterface::BaseAsyncRequest::BaseAsyncRequest(
diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index 4913682f1d..d7876a000b 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -190,7 +190,7 @@ bool ServerContext::IsCancelled() const {
 
 void ServerContext::set_compression_algorithm(
     grpc_compression_algorithm algorithm) {
-  char* algorithm_name = NULL;
+  const char* algorithm_name = NULL;
   if (!grpc_compression_algorithm_name(algorithm, &algorithm_name)) {
     gpr_log(GPR_ERROR, "Name for compression algorithm '%d' unknown.",
             algorithm);
diff --git a/src/cpp/util/byte_buffer_cc.cc b/src/cpp/util/byte_buffer_cc.cc
index b1ff25252a..180c813762 100644
--- a/src/cpp/util/byte_buffer_cc.cc
+++ b/src/cpp/util/byte_buffer_cc.cc
@@ -16,11 +16,15 @@
  *
  */
 
+#include <grpc++/impl/grpc_library.h>
 #include <grpc++/support/byte_buffer.h>
+#include <grpc/byte_buffer.h>
 #include <grpc/byte_buffer_reader.h>
 
 namespace grpc {
 
+static internal::GrpcLibraryInitializer g_gli_initializer;
+
 ByteBuffer::ByteBuffer(const Slice* slices, size_t nslices) {
   // The following assertions check that the representation of a grpc::Slice is
   // identical to that of a grpc_slice:  it has a grpc_slice field, and nothing
@@ -29,6 +33,16 @@ ByteBuffer::ByteBuffer(const Slice* slices, size_t nslices) {
                 "Slice must have same representation as grpc_slice");
   static_assert(sizeof(Slice) == sizeof(grpc_slice),
                 "Slice must have same representation as grpc_slice");
+  // The following assertions check that the representation of a ByteBuffer is
+  // identical to grpc_byte_buffer*:  it has a grpc_byte_buffer* field,
+  // and nothing else.
+  static_assert(std::is_same<decltype(buffer_), grpc_byte_buffer*>::value,
+                "ByteBuffer must have same representation as "
+                "grpc_byte_buffer*");
+  static_assert(sizeof(ByteBuffer) == sizeof(grpc_byte_buffer*),
+                "ByteBuffer must have same representation as "
+                "grpc_byte_buffer*");
+  g_gli_initializer.summon();  // Make sure that initializer linked in
   // The const_cast is legal if grpc_raw_byte_buffer_create() does no more
   // than its advertised side effect of increasing the reference count of the
   // slices it processes, and such an increase does not affect the semantics
@@ -37,19 +51,6 @@ ByteBuffer::ByteBuffer(const Slice* slices, size_t nslices) {
       reinterpret_cast<grpc_slice*>(const_cast<Slice*>(slices)), nslices);
 }
 
-ByteBuffer::~ByteBuffer() {
-  if (buffer_) {
-    grpc_byte_buffer_destroy(buffer_);
-  }
-}
-
-void ByteBuffer::Clear() {
-  if (buffer_) {
-    grpc_byte_buffer_destroy(buffer_);
-    buffer_ = nullptr;
-  }
-}
-
 Status ByteBuffer::Dump(std::vector<Slice>* slices) const {
   slices->clear();
   if (!buffer_) {
@@ -80,7 +81,9 @@ ByteBuffer::ByteBuffer(const ByteBuffer& buf)
     : buffer_(grpc_byte_buffer_copy(buf.buffer_)) {}
 
 ByteBuffer& ByteBuffer::operator=(const ByteBuffer& buf) {
-  Clear();  // first remove existing data
+  if (this != &buf) {
+    Clear();  // first remove existing data
+  }
   if (buf.buffer_) {
     buffer_ = grpc_byte_buffer_copy(buf.buffer_);  // then copy
   }
diff --git a/src/cpp/util/core_stats.cc b/src/cpp/util/core_stats.cc
new file mode 100644
index 0000000000..edf0b1bb67
--- /dev/null
+++ b/src/cpp/util/core_stats.cc
@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/cpp/util/core_stats.h"
+
+#include <grpc/support/log.h>
+
+using grpc::core::Bucket;
+using grpc::core::Histogram;
+using grpc::core::Metric;
+using grpc::core::Stats;
+
+namespace grpc {
+
+void CoreStatsToProto(const grpc_stats_data& core, Stats* proto) {
+  for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    Metric* m = proto->add_metrics();
+    m->set_name(grpc_stats_counter_name[i]);
+    m->set_count(core.counters[i]);
+  }
+  for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    Metric* m = proto->add_metrics();
+    m->set_name(grpc_stats_histogram_name[i]);
+    Histogram* h = m->mutable_histogram();
+    for (int j = 0; j < grpc_stats_histo_buckets[i]; j++) {
+      Bucket* b = h->add_buckets();
+      b->set_start(grpc_stats_histo_bucket_boundaries[i][j]);
+      b->set_count(core.histograms[grpc_stats_histo_start[i] + j]);
+    }
+  }
+}
+
+void ProtoToCoreStats(const grpc::core::Stats& proto, grpc_stats_data* core) {
+  memset(core, 0, sizeof(*core));
+  for (const auto& m : proto.metrics()) {
+    switch (m.value_case()) {
+      case Metric::VALUE_NOT_SET:
+        break;
+      case Metric::kCount:
+        for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+          if (m.name() == grpc_stats_counter_name[i]) {
+            core->counters[i] = m.count();
+            break;
+          }
+        }
+        break;
+      case Metric::kHistogram:
+        for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+          if (m.name() == grpc_stats_histogram_name[i]) {
+            const auto& h = m.histogram();
+            bool valid = true;
+            if (grpc_stats_histo_buckets[i] != h.buckets_size()) valid = false;
+            for (int j = 0; valid && j < h.buckets_size(); j++) {
+              if (grpc_stats_histo_bucket_boundaries[i][j] !=
+                  h.buckets(j).start()) {
+                valid = false;
+              }
+            }
+            if (!valid) {
+              gpr_log(GPR_ERROR,
+                      "Found histogram %s but shape is different from proto",
+                      m.name().c_str());
+            }
+            for (int j = 0; valid && j < h.buckets_size(); j++) {
+              core->histograms[grpc_stats_histo_start[i] + j] =
+                  h.buckets(j).count();
+            }
+          }
+        }
+        break;
+    }
+  }
+}
+
+}  // namespace grpc
diff --git a/src/cpp/util/core_stats.h b/src/cpp/util/core_stats.h
new file mode 100644
index 0000000000..00e38bf266
--- /dev/null
+++ b/src/cpp/util/core_stats.h
@@ -0,0 +1,35 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_UTIL_CORE_STATS_H
+#define GRPC_INTERNAL_CPP_UTIL_CORE_STATS_H
+
+#include "src/proto/grpc/core/stats.pb.h"
+
+extern "C" {
+#include "src/core/lib/debug/stats.h"
+}
+
+namespace grpc {
+
+void CoreStatsToProto(const grpc_stats_data& core, grpc::core::Stats* proto);
+void ProtoToCoreStats(const grpc::core::Stats& proto, grpc_stats_data* core);
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_UTIL_CORE_STATS_H
diff --git a/src/cpp/util/slice_cc.cc b/src/cpp/util/slice_cc.cc
index 486d0cdf0e..3ae17e8052 100644
--- a/src/cpp/util/slice_cc.cc
+++ b/src/cpp/util/slice_cc.cc
@@ -50,4 +50,6 @@ Slice::Slice(void* buf, size_t len, void (*destroy)(void*), void* user_data)
 Slice::Slice(void* buf, size_t len, void (*destroy)(void*, size_t))
     : slice_(grpc_slice_new_with_len(buf, len, destroy)) {}
 
+grpc_slice Slice::c_slice() const { return grpc_slice_ref(slice_); }
+
 }  // namespace grpc
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.csproj b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
index abf326459c..bbcbd95be5 100755
--- a/src/csharp/Grpc.Auth/Grpc.Auth.csproj
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
@@ -15,7 +15,6 @@
     <PackageTags>gRPC RPC Protocol HTTP/2 Auth OAuth2</PackageTags>
     <PackageProjectUrl>https://github.com/grpc/grpc</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</PackageLicenseUrl>
-    <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.5' ">1.6.0</NetStandardImplicitPackageVersion>
     <IncludeSymbols>true</IncludeSymbols>
     <IncludeSource>true</IncludeSource>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj b/src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj
index 9ad6fd0c61..4d6767fa98 100755
--- a/src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj
+++ b/src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj
@@ -15,7 +15,6 @@
     <PackageTags>gRPC test testing</PackageTags>
     <PackageProjectUrl>https://github.com/grpc/grpc</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</PackageLicenseUrl>
-    <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.5' ">1.6.0</NetStandardImplicitPackageVersion>
     <IncludeSymbols>true</IncludeSymbols>
     <IncludeSource>true</IncludeSource>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
index 6df68fda58..18993a93e0 100755
--- a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
+++ b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.Core.Tests</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Core.Tests</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
@@ -21,7 +19,6 @@
     <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="NUnit" Version="3.6.0" />
     <PackageReference Include="NUnitLite" Version="3.6.0" />
-    <PackageReference Include="NUnit.ConsoleRunner" Version="3.6.0" />
     <PackageReference Include="OpenCover" Version="4.6.519" />
     <PackageReference Include="ReportGenerator" Version="2.4.4.0" />
   </ItemGroup>
diff --git a/src/csharp/Grpc.Core.Tests/NUnitMain.cs b/src/csharp/Grpc.Core.Tests/NUnitMain.cs
index 87972e23ad..49cb8cd3b9 100644
--- a/src/csharp/Grpc.Core.Tests/NUnitMain.cs
+++ b/src/csharp/Grpc.Core.Tests/NUnitMain.cs
@@ -33,7 +33,7 @@ namespace Grpc.Core.Tests
         public static int Main(string[] args)
         {
             // Make logger immune to NUnit capturing stdout and stderr to workaround https://github.com/nunit/nunit/issues/1406.
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
 #if NETCOREAPP1_0
             return new AutoRun(typeof(NUnitMain).GetTypeInfo().Assembly).Execute(args, new ExtendedTextWrapper(Console.Out), Console.In);
 #else
diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index dde800aadd..d9950b2f20 100755
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -14,7 +14,6 @@
     <PackageTags>gRPC RPC Protocol HTTP/2</PackageTags>
     <PackageProjectUrl>https://github.com/grpc/grpc</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</PackageLicenseUrl>
-    <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.5' ">1.6.0</NetStandardImplicitPackageVersion>
     <IncludeSymbols>true</IncludeSymbols>
     <IncludeSource>true</IncludeSource>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
@@ -65,7 +64,7 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.5' ">
     <PackageReference Include="System.Runtime.Loader" Version="4.0.0" />
     <PackageReference Include="System.Threading.Thread" Version="4.0.0" />
-    <PackageReference Include="System.Threading.ThreadPool" Version="4.0.0" />
+    <PackageReference Include="System.Threading.ThreadPool" Version="4.0.10" />
   </ItemGroup>
 
   <Import Project="NativeDeps.csproj.include" />
diff --git a/src/csharp/Grpc.Core/Grpc.Core.targets b/src/csharp/Grpc.Core/Grpc.Core.targets
index 3367d51a80..cce53db82b 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.targets
+++ b/src/csharp/Grpc.Core/Grpc.Core.targets
@@ -4,26 +4,32 @@
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\win\native\grpc_csharp_ext.x86.dll">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>grpc_csharp_ext.x86.dll</Link>
+      <Visible>false</Visible>
     </Content>
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\win\native\grpc_csharp_ext.x64.dll">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>grpc_csharp_ext.x64.dll</Link>
+      <Visible>false</Visible>
     </Content>
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux\native\libgrpc_csharp_ext.x86.so">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>libgrpc_csharp_ext.x86.so</Link>
+      <Visible>false</Visible>
     </Content>
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux\native\libgrpc_csharp_ext.x64.so">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>libgrpc_csharp_ext.x64.so</Link>
+      <Visible>false</Visible>
     </Content>
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\osx\native\libgrpc_csharp_ext.x86.dylib">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>libgrpc_csharp_ext.x86.dylib</Link>
+      <Visible>false</Visible>
     </Content>
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\osx\native\libgrpc_csharp_ext.x64.dylib">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <Link>libgrpc_csharp_ext.x64.dylib</Link>
+      <Visible>false</Visible>
     </Content>
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/csharp/Grpc.Core/GrpcEnvironment.cs b/src/csharp/Grpc.Core/GrpcEnvironment.cs
index cbc7d2078c..80031cb7ef 100644
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@@ -43,7 +43,7 @@ namespace Grpc.Core
         static readonly HashSet<Channel> registeredChannels = new HashSet<Channel>();
         static readonly HashSet<Server> registeredServers = new HashSet<Server>();
 
-        static ILogger logger = new NullLogger();
+        static ILogger logger = new LogLevelFilterLogger(new ConsoleLogger(), LogLevel.Off, true);
 
         readonly GrpcThreadPool threadPool;
         readonly DebugStats debugStats = new DebugStats();
diff --git a/src/csharp/Grpc.Core/Logging/LogLevel.cs b/src/csharp/Grpc.Core/Logging/LogLevel.cs
index 7718e3c2ab..4db0e47b97 100644
--- a/src/csharp/Grpc.Core/Logging/LogLevel.cs
+++ b/src/csharp/Grpc.Core/Logging/LogLevel.cs
@@ -39,6 +39,10 @@ namespace Grpc.Core.Logging
         /// <summary>
         /// Error severity.
         /// </summary>
-        Error
+        Error,
+        /// <summary>
+        /// Logging is off.
+        /// </summary>
+        Off = int.MaxValue
     }
 }
diff --git a/src/csharp/Grpc.Core/Logging/LogLevelFilterLogger.cs b/src/csharp/Grpc.Core/Logging/LogLevelFilterLogger.cs
index b611c191a5..a650d029d7 100644
--- a/src/csharp/Grpc.Core/Logging/LogLevelFilterLogger.cs
+++ b/src/csharp/Grpc.Core/Logging/LogLevelFilterLogger.cs
@@ -27,6 +27,8 @@ namespace Grpc.Core.Logging
     /// <summary>Logger that filters out messages below certain log level.</summary>
     public class LogLevelFilterLogger : ILogger
     {
+        // Verbosity environment variable used by C core.
+        private const string CoreVerbosityEnvVarName = "GRPC_VERBOSITY";
         readonly ILogger innerLogger;
         readonly LogLevel logLevel;
 
@@ -40,6 +42,19 @@ namespace Grpc.Core.Logging
         }
 
         /// <summary>
+        /// Creates and instance of <c>LogLevelFilter.</c>
+        /// The <c>fromEnvironmentVariable</c> parameter allows looking up "GRPC_VERBOSITY" setting provided by C-core
+        /// and uses the same log level for C# logs. Using this setting is recommended as it can prevent unintentionally hiding
+        /// C core logs requested by "GRPC_VERBOSITY" environment variable (which could happen if C# logger's log level was set to a more restrictive value).
+        /// </summary>
+        /// <param name="logger">the logger to forward filtered logs to.</param>
+        /// <param name="defaultLogLevel">the default log level, unless overriden by env variable.</param>
+        /// <param name="fromEnvironmentVariable">if <c>true</c>, override log level with setting from environment variable.</param>
+        public LogLevelFilterLogger(ILogger logger, LogLevel defaultLogLevel, bool fromEnvironmentVariable) : this(logger, GetLogLevelFromEnvironment(defaultLogLevel, fromEnvironmentVariable))
+        {
+        }
+
+        /// <summary>
         /// Returns a logger associated with the specified type.
         /// </summary>
         public virtual ILogger ForType<T>()
@@ -141,5 +156,33 @@ namespace Grpc.Core.Logging
                 innerLogger.Error(exception, message);
             }
         }
+
+        /// <summary>Get log level based on a default and lookup of <c>GRPC_VERBOSITY</c> environment variable.</summary>
+        private static LogLevel GetLogLevelFromEnvironment(LogLevel defaultLogLevel, bool fromEnvironmentVariable)
+        {
+            if (!fromEnvironmentVariable)
+            {
+                return defaultLogLevel;
+            }
+
+            var verbosityString = System.Environment.GetEnvironmentVariable(CoreVerbosityEnvVarName);
+            if (verbosityString == null)
+            {
+                return defaultLogLevel;
+            }
+
+            // NOTE: C core doesn't have "WARNING" log level
+            switch (verbosityString.ToUpperInvariant())
+            {
+                case "DEBUG":
+                    return LogLevel.Debug;
+                case "INFO":
+                    return LogLevel.Info;
+                case "ERROR":
+                    return LogLevel.Error;
+                default:
+                    return defaultLogLevel;
+            }
+        }
     }
 }
diff --git a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
index 74deed6584..db4e3ef4e3 100755
--- a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
+++ b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
@@ -8,7 +8,6 @@
     <AssemblyName>Grpc.Examples.MathClient</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Examples.MathClient</PackageId>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
index 1abf261498..b12b418d01 100755
--- a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
+++ b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
@@ -8,7 +8,6 @@
     <AssemblyName>Grpc.Examples.MathServer</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Examples.MathServer</PackageId>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.Examples.Tests/Grpc.Examples.Tests.csproj b/src/csharp/Grpc.Examples.Tests/Grpc.Examples.Tests.csproj
index d2a13ed6e1..3ccc9adfaf 100755
--- a/src/csharp/Grpc.Examples.Tests/Grpc.Examples.Tests.csproj
+++ b/src/csharp/Grpc.Examples.Tests/Grpc.Examples.Tests.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.Examples.Tests</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Examples.Tests</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.Examples.Tests/NUnitMain.cs b/src/csharp/Grpc.Examples.Tests/NUnitMain.cs
index a83caea206..bcb8b46b64 100644
--- a/src/csharp/Grpc.Examples.Tests/NUnitMain.cs
+++ b/src/csharp/Grpc.Examples.Tests/NUnitMain.cs
@@ -33,7 +33,7 @@ namespace Grpc.Examples.Tests
         public static int Main(string[] args)
         {
             // Make logger immune to NUnit capturing stdout and stderr to workaround https://github.com/nunit/nunit/issues/1406.
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
 #if NETCOREAPP1_0
             return new AutoRun(typeof(NUnitMain).GetTypeInfo().Assembly).Execute(args, new ExtendedTextWrapper(Console.Out), Console.In);
 #else
diff --git a/src/csharp/Grpc.Examples/Grpc.Examples.csproj b/src/csharp/Grpc.Examples/Grpc.Examples.csproj
index 491d313f17..baa3b4ce6c 100755
--- a/src/csharp/Grpc.Examples/Grpc.Examples.csproj
+++ b/src/csharp/Grpc.Examples/Grpc.Examples.csproj
@@ -7,7 +7,6 @@
     <TargetFrameworks>net45;netcoreapp1.0</TargetFrameworks>
     <AssemblyName>Grpc.Examples</AssemblyName>
     <PackageId>Grpc.Examples</PackageId>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.HealthCheck.Tests/Grpc.HealthCheck.Tests.csproj b/src/csharp/Grpc.HealthCheck.Tests/Grpc.HealthCheck.Tests.csproj
index 2ccf46b9b9..9da0539dcb 100755
--- a/src/csharp/Grpc.HealthCheck.Tests/Grpc.HealthCheck.Tests.csproj
+++ b/src/csharp/Grpc.HealthCheck.Tests/Grpc.HealthCheck.Tests.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.HealthCheck.Tests</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.HealthCheck.Tests</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.HealthCheck.Tests/NUnitMain.cs b/src/csharp/Grpc.HealthCheck.Tests/NUnitMain.cs
index 57deb3ba30..365551e895 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/NUnitMain.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/NUnitMain.cs
@@ -33,7 +33,7 @@ namespace Grpc.HealthCheck.Tests
         public static int Main(string[] args)
         {
             // Make logger immune to NUnit capturing stdout and stderr to workaround https://github.com/nunit/nunit/issues/1406.
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
 #if NETCOREAPP1_0
             return new AutoRun(typeof(NUnitMain).GetTypeInfo().Assembly).Execute(args, new ExtendedTextWrapper(Console.Out), Console.In);
 #else
diff --git a/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj b/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj
index 3eb90434f3..681719d124 100755
--- a/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj
+++ b/src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj
@@ -14,7 +14,6 @@
     <PackageTags>gRPC health check</PackageTags>
     <PackageProjectUrl>https://github.com/grpc/grpc</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</PackageLicenseUrl>
-    <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.5' ">1.6.0</NetStandardImplicitPackageVersion>
     <IncludeSymbols>true</IncludeSymbols>
     <IncludeSource>true</IncludeSource>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
index c67beea7cd..35713156ea 100755
--- a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.IntegrationTesting.Client</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.IntegrationTesting.Client</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.IntegrationTesting.QpsWorker/Grpc.IntegrationTesting.QpsWorker.csproj b/src/csharp/Grpc.IntegrationTesting.QpsWorker/Grpc.IntegrationTesting.QpsWorker.csproj
index e452257b1b..3ecefe3bc4 100755
--- a/src/csharp/Grpc.IntegrationTesting.QpsWorker/Grpc.IntegrationTesting.QpsWorker.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.QpsWorker/Grpc.IntegrationTesting.QpsWorker.csproj
@@ -9,8 +9,6 @@
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.IntegrationTesting.QpsWorker</PackageId>
     <ServerGarbageCollection>true</ServerGarbageCollection>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
index a1fb316fdb..1092b2c21e 100755
--- a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.IntegrationTesting.Server</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.IntegrationTesting.Server</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.IntegrationTesting.StressClient/Grpc.IntegrationTesting.StressClient.csproj b/src/csharp/Grpc.IntegrationTesting.StressClient/Grpc.IntegrationTesting.StressClient.csproj
index f64bea3d2b..22272547f6 100755
--- a/src/csharp/Grpc.IntegrationTesting.StressClient/Grpc.IntegrationTesting.StressClient.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.StressClient/Grpc.IntegrationTesting.StressClient.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.IntegrationTesting.StressClient</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.IntegrationTesting.StressClient</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
index f5077fe0f7..c02c9844e3 100755
--- a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
+++ b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.IntegrationTesting</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.IntegrationTesting</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
@@ -31,10 +29,6 @@
     <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">
-    <PackageReference Include="System.Linq.Expressions" Version="4.1.1" />
-  </ItemGroup>
-
   <ItemGroup>
     <Compile Include="..\Grpc.Core\Version.cs" />
   </ItemGroup>
diff --git a/src/csharp/Grpc.IntegrationTesting/NUnitMain.cs b/src/csharp/Grpc.IntegrationTesting/NUnitMain.cs
index a36802af55..9d24762e0a 100644
--- a/src/csharp/Grpc.IntegrationTesting/NUnitMain.cs
+++ b/src/csharp/Grpc.IntegrationTesting/NUnitMain.cs
@@ -33,7 +33,7 @@ namespace Grpc.IntegrationTesting
         public static int Main(string[] args)
         {
             // Make logger immune to NUnit capturing stdout and stderr to workaround https://github.com/nunit/nunit/issues/1406.
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
 #if NETCOREAPP1_0
             return new AutoRun(typeof(NUnitMain).GetTypeInfo().Assembly).Execute(args, new ExtendedTextWrapper(Console.Out), Console.In);
 #else
diff --git a/src/csharp/Grpc.Microbenchmarks/Grpc.Microbenchmarks.csproj b/src/csharp/Grpc.Microbenchmarks/Grpc.Microbenchmarks.csproj
index 17797e1e1e..108357e4eb 100644
--- a/src/csharp/Grpc.Microbenchmarks/Grpc.Microbenchmarks.csproj
+++ b/src/csharp/Grpc.Microbenchmarks/Grpc.Microbenchmarks.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.Microbenchmarks</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Microbenchmarks</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.Microbenchmarks/Program.cs b/src/csharp/Grpc.Microbenchmarks/Program.cs
index 8412ba3245..d07d4187c4 100644
--- a/src/csharp/Grpc.Microbenchmarks/Program.cs
+++ b/src/csharp/Grpc.Microbenchmarks/Program.cs
@@ -27,7 +27,7 @@ namespace Grpc.Microbenchmarks
     {
         public static void Main(string[] args)
         {
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
             var benchmark = new SendMessageBenchmark();
             benchmark.Init();
             foreach (int threadCount in new int[] {1, 1, 2, 4, 8, 12})
diff --git a/src/csharp/Grpc.Reflection.Tests/Grpc.Reflection.Tests.csproj b/src/csharp/Grpc.Reflection.Tests/Grpc.Reflection.Tests.csproj
index cf756c68ad..d368697124 100755
--- a/src/csharp/Grpc.Reflection.Tests/Grpc.Reflection.Tests.csproj
+++ b/src/csharp/Grpc.Reflection.Tests/Grpc.Reflection.Tests.csproj
@@ -8,8 +8,6 @@
     <AssemblyName>Grpc.Reflection.Tests</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Grpc.Reflection.Tests</PackageId>
-    <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">$(PackageTargetFallback);portable-net45</PackageTargetFallback>
-    <RuntimeFrameworkVersion Condition=" '$(TargetFramework)' == 'netcoreapp1.0' ">1.0.4</RuntimeFrameworkVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
diff --git a/src/csharp/Grpc.Reflection.Tests/NUnitMain.cs b/src/csharp/Grpc.Reflection.Tests/NUnitMain.cs
index a45dab8772..49ed1cc8d4 100644
--- a/src/csharp/Grpc.Reflection.Tests/NUnitMain.cs
+++ b/src/csharp/Grpc.Reflection.Tests/NUnitMain.cs
@@ -33,7 +33,7 @@ namespace Grpc.Reflection.Tests
         public static int Main(string[] args)
         {
             // Make logger immune to NUnit capturing stdout and stderr to workaround https://github.com/nunit/nunit/issues/1406.
-            GrpcEnvironment.SetLogger(new TextWriterLogger(Console.Error));
+            GrpcEnvironment.SetLogger(new ConsoleLogger());
 #if NETCOREAPP1_0
             return new AutoRun(typeof(NUnitMain).GetTypeInfo().Assembly).Execute(args, new ExtendedTextWrapper(Console.Out), Console.In);
 #else
diff --git a/src/csharp/Grpc.Reflection/Grpc.Reflection.csproj b/src/csharp/Grpc.Reflection/Grpc.Reflection.csproj
index b77fd69aee..704eea5c17 100755
--- a/src/csharp/Grpc.Reflection/Grpc.Reflection.csproj
+++ b/src/csharp/Grpc.Reflection/Grpc.Reflection.csproj
@@ -14,7 +14,6 @@
     <PackageTags>gRPC reflection</PackageTags>
     <PackageProjectUrl>https://github.com/grpc/grpc</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</PackageLicenseUrl>
-    <NetStandardImplicitPackageVersion Condition=" '$(TargetFramework)' == 'netstandard1.5' ">1.6.0</NetStandardImplicitPackageVersion>
     <IncludeSymbols>true</IncludeSymbols>
     <IncludeSource>true</IncludeSource>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/src/csharp/doc/.gitignore b/src/csharp/doc/.gitignore
new file mode 100644
index 0000000000..09ee235efc
--- /dev/null
+++ b/src/csharp/doc/.gitignore
@@ -0,0 +1,2 @@
+html
+obj
diff --git a/src/csharp/doc/README.md b/src/csharp/doc/README.md
index 585500b5ca..46cce013a1 100644
--- a/src/csharp/doc/README.md
+++ b/src/csharp/doc/README.md
@@ -1,2 +1,9 @@
+DocFX-generated C# API Reference
+--------------------------------
 
-SandCastle project files to generate HTML reference documentation.
\ No newline at end of file
+Install docfx based on instructions here: https://github.com/dotnet/docfx
+
+```
+# generate docfx documentation into ./html directory
+$ docfx
+```
diff --git a/src/csharp/doc/docfx.json b/src/csharp/doc/docfx.json
new file mode 100644
index 0000000000..7219d0e7a6
--- /dev/null
+++ b/src/csharp/doc/docfx.json
@@ -0,0 +1,37 @@
+{
+  "metadata": [
+    {
+      "src": [
+        {
+          "files": ["Grpc.Core/Grpc.Core.csproj",
+                    "Grpc.Auth/Grpc.Auth.csproj",
+                    "Grpc.Core.Testing/Grpc.Core.Testing.csproj",
+                    "Grpc.HealthCheck/Grpc.HealthCheck.csproj",
+                    "Grpc.Reflection/Grpc.HealthCheck.csproj"],
+          "exclude": [ "**/bin/**", "**/obj/**" ],
+          "cwd": ".."
+        }
+      ],
+      "properties": { "TargetFramework": "net45" },
+      "dest": "obj/api"
+    }
+  ],
+  "build": {
+    "content": [
+      {
+        "files": [ "**/*.yml" ],
+        "cwd": "obj/api",
+        "dest": "api"
+      },
+      {
+        "files": [ "toc.yml"],
+      }
+    ],
+    "globalMetadata": {
+      "_appTitle": "gRPC C#",
+      "_enableSearch": true,
+      "_disableContribution": true
+    },
+    "dest": "html"
+  }
+}
diff --git a/src/csharp/doc/grpc_csharp_public.shfbproj b/src/csharp/doc/grpc_csharp_public.shfbproj
deleted file mode 100644
index fab953da35..0000000000
--- a/src/csharp/doc/grpc_csharp_public.shfbproj
+++ /dev/null
@@ -1,83 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <!-- The configuration and platform will be used to determine which assemblies to include from solution and
-				 project documentation sources -->
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <SchemaVersion>2.0</SchemaVersion>
-    <ProjectGuid>{77e3da09-fc92-486f-a90a-99ca788e8b59}</ProjectGuid>
-    <SHFBSchemaVersion>2015.6.5.0</SHFBSchemaVersion>
-    <!-- AssemblyName, Name, and RootNamespace are not used by SHFB but Visual Studio adds them anyway -->
-    <AssemblyName>Documentation</AssemblyName>
-    <RootNamespace>Documentation</RootNamespace>
-    <Name>Documentation</Name>
-    <!-- SHFB properties -->
-    <FrameworkVersion>.NET Framework 4.5</FrameworkVersion>
-    <OutputPath>..\..\..\doc\ref\csharp\html</OutputPath>
-    <Language>en-US</Language>
-    <DocumentationSources>
-      <DocumentationSource sourceFile="..\Grpc.Auth\Grpc.Auth.csproj" />
-<DocumentationSource sourceFile="..\Grpc.Core\Grpc.Core.csproj" />
-<DocumentationSource sourceFile="..\Grpc.HealthCheck\Grpc.HealthCheck.csproj" />
-<DocumentationSource sourceFile="..\Grpc.Reflection\Grpc.Reflection.csproj" />
-<DocumentationSource sourceFile="..\Grpc.Core.Testing\Grpc.Core.Testing.csproj" /></DocumentationSources>
-    <BuildAssemblerVerbosity>OnlyWarningsAndErrors</BuildAssemblerVerbosity>
-    <HelpFileFormat>Website</HelpFileFormat>
-    <IndentHtml>False</IndentHtml>
-    <KeepLogFile>True</KeepLogFile>
-    <DisableCodeBlockComponent>False</DisableCodeBlockComponent>
-    <CleanIntermediates>True</CleanIntermediates>
-    <HelpFileVersion>1.0.0.0</HelpFileVersion>
-    <MaximumGroupParts>2</MaximumGroupParts>
-    <NamespaceGrouping>False</NamespaceGrouping>
-    <SyntaxFilters>Standard</SyntaxFilters>
-    <SdkLinkTarget>Blank</SdkLinkTarget>
-    <RootNamespaceContainer>True</RootNamespaceContainer>
-    <PresentationStyle>VS2013</PresentationStyle>
-    <Preliminary>False</Preliminary>
-    <NamingMethod>MemberName</NamingMethod>
-    <HelpTitle>gRPC C#</HelpTitle>
-    <ContentPlacement>AboveNamespaces</ContentPlacement>
-    <HtmlHelpName>Documentation</HtmlHelpName>
-    <NamespaceSummaries>
-      <NamespaceSummaryItem name="Grpc.Auth" isDocumented="True">Provides OAuth2 based authentication for gRPC. &lt;c&gt;Grpc.Auth&lt;/c&gt; currently consists of a set of very lightweight wrappers and uses C# &lt;a href="https://www.nuget.org/packages/Google.Apis.Auth/"&gt;Google.Apis.Auth&lt;/a&gt; library.</NamespaceSummaryItem>
-      <NamespaceSummaryItem name="Grpc.Core" isDocumented="True">Main namespace for gRPC C# functionality. Contains concepts representing both client side and server side gRPC logic.
-
-&lt;seealso cref="Grpc.Core.Channel"/&gt; 
-&lt;seealso cref="Grpc.Core.Server"/&gt;</NamespaceSummaryItem>
-      <NamespaceSummaryItem name="Grpc.Core.Logging" isDocumented="True">Provides functionality to redirect gRPC logs to application-specified destination.</NamespaceSummaryItem>
-      <NamespaceSummaryItem name="Grpc.Core.Utils" isDocumented="True">Various utilities for gRPC C#.</NamespaceSummaryItem>
-    </NamespaceSummaries>
-    <MissingTags>Summary, Parameter, AutoDocumentCtors, Namespace, TypeParameter, AutoDocumentDispose</MissingTags>
-  </PropertyGroup>
-  <!-- There are no properties for these groups.  AnyCPU needs to appear in order for Visual Studio to perform
-			 the build.  The others are optional common platform types that may appear. -->
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x64' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x64' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|Win32' ">
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|Win32' ">
-  </PropertyGroup>
-  <!-- Import the SHFB build targets -->
-  <Import Project="$(SHFBROOT)\SandcastleHelpFileBuilder.targets" />
-  <!-- The pre-build and post-build event properties must appear *after* the targets file import in order to be
-			 evaluated correctly. -->
-  <PropertyGroup>
-    <PreBuildEvent>
-    </PreBuildEvent>
-    <PostBuildEvent>
-    </PostBuildEvent>
-    <RunPostBuildEvent>OnBuildSuccess</RunPostBuildEvent>
-  </PropertyGroup>
-</Project>
\ No newline at end of file
diff --git a/src/csharp/doc/toc.yml b/src/csharp/doc/toc.yml
new file mode 100644
index 0000000000..c3a1e415ab
--- /dev/null
+++ b/src/csharp/doc/toc.yml
@@ -0,0 +1,3 @@
+- name: API Documentation
+  href: obj/api/
+  homepage: obj/api/Grpc.Core.yml
diff --git a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
index 3a282b0526..7d073c9a84 100644
--- a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
+++ b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
@@ -101,7 +101,7 @@ Pod::Spec.new do |s|
   s.preserve_paths = plugin
 
   # Restrict the protoc version to the one supported by this plugin.
-  s.dependency '!ProtoCompiler', '3.3.0'
+  s.dependency '!ProtoCompiler', '3.4.0'
   # For the Protobuf dependency not to complain:
   s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
diff --git a/src/objective-c/!ProtoCompiler.podspec b/src/objective-c/!ProtoCompiler.podspec
index c3f95f9f42..25c437911f 100644
--- a/src/objective-c/!ProtoCompiler.podspec
+++ b/src/objective-c/!ProtoCompiler.podspec
@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler'
-  v = '3.3.0'
+  v = '3.4.0'
   s.version  = v
   s.summary  = 'The Protobuf Compiler (protoc) generates Objective-C files from .proto files'
   s.description = <<-DESC
diff --git a/src/objective-c/GRPCClient/GRPCCall+GID.h b/src/objective-c/GRPCClient/GRPCCall+GID.h
new file mode 100644
index 0000000000..3ee732e79e
--- /dev/null
+++ b/src/objective-c/GRPCClient/GRPCCall+GID.h
@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#import "GRPCCall.h"
+#import "GRPCCall+OAuth2.h"
+
+#import <Google/SignIn.h>
+
+/**
+ * Extend GIDSignIn class to comply GRPCAuthorizationProtocol
+ */
+@interface GIDSignIn (GRPC) <GRPCAuthorizationProtocol>
+- (void)getTokenWithHandler:(void (^)(NSString *token))hander;
+@end
diff --git a/src/core/lib/support/thd_internal.h b/src/objective-c/GRPCClient/GRPCCall+GID.m
index cc468c7846..030737147b 100644
--- a/src/core/lib/support/thd_internal.h
+++ b/src/objective-c/GRPCClient/GRPCCall+GID.m
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015 gRPC authors.
+ * Copyright 2017 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,9 +16,13 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
-#define GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
+#import "GRPCCall+GID.h"
 
-/* Internal interfaces between modules within the gpr support library.  */
+@implementation GIDSignIn (GRPC)
 
-#endif /* GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H */
+- (void)getTokenWithHandler:(void (^)(NSString *token))handler {
+  NSString *token = self.currentUser.authentication.accessToken;
+  handler(token);
+}
+
+@end
diff --git a/src/objective-c/GRPCClient/GRPCCall+OAuth2.h b/src/objective-c/GRPCClient/GRPCCall+OAuth2.h
index 65465e9523..adb1042aa0 100644
--- a/src/objective-c/GRPCClient/GRPCCall+OAuth2.h
+++ b/src/objective-c/GRPCClient/GRPCCall+OAuth2.h
@@ -18,6 +18,13 @@
 
 #import "GRPCCall.h"
 
+/**
+ * The protocol of an OAuth2 token object from which GRPCCall can acquire a token.
+ */
+@protocol GRPCAuthorizationProtocol
+- (void)getTokenWithHandler:(void (^)(NSString *token))hander;
+@end
+
 /** Helpers for setting and reading headers compatible with OAuth2. */
 @interface GRPCCall (OAuth2)
 
@@ -33,4 +40,12 @@
 /** Returns the value (if any) of the "www-authenticate" response header (the challenge header). */
 @property(atomic, readonly) NSString *oauth2ChallengeHeader;
 
+/**
+ * The authorization token object to be used when starting the call. If the value is set to nil, no
+ * oauth authentication will be used.
+ *
+ * If tokenProvider exists, it takes precedence over the token set by oauth2AccessToken.
+ */
+@property(atomic, strong) id<GRPCAuthorizationProtocol> tokenProvider;
+
 @end
diff --git a/src/objective-c/GRPCClient/GRPCCall+OAuth2.m b/src/objective-c/GRPCClient/GRPCCall+OAuth2.m
index eaa7465087..8451ebe870 100644
--- a/src/objective-c/GRPCClient/GRPCCall+OAuth2.m
+++ b/src/objective-c/GRPCClient/GRPCCall+OAuth2.m
@@ -16,6 +16,8 @@
  *
  */
 
+#import <objc/runtime.h>
+
 #import "GRPCCall+OAuth2.h"
 
 static NSString * const kAuthorizationHeader = @"authorization";
@@ -23,6 +25,7 @@ static NSString * const kBearerPrefix = @"Bearer ";
 static NSString * const kChallengeHeader = @"www-authenticate";
 
 @implementation GRPCCall (OAuth2)
+@dynamic tokenProvider;
 
 - (NSString *)oauth2AccessToken {
   NSString *headerValue = self.requestHeaders[kAuthorizationHeader];
@@ -45,4 +48,12 @@ static NSString * const kChallengeHeader = @"www-authenticate";
   return self.responseHeaders[kChallengeHeader];
 }
 
+- (void)setTokenProvider:(id<GRPCAuthorizationProtocol>)tokenProvider {
+  objc_setAssociatedObject(self, @selector(tokenProvider), tokenProvider, OBJC_ASSOCIATION_RETAIN);
+}
+
+- (id<GRPCAuthorizationProtocol>)tokenProvider {
+  return objc_getAssociatedObject(self, @selector(tokenProvider));
+}
+
 @end
diff --git a/src/objective-c/GRPCClient/GRPCCall.h b/src/objective-c/GRPCClient/GRPCCall.h
index 4d90cfd384..df563ca36c 100644
--- a/src/objective-c/GRPCClient/GRPCCall.h
+++ b/src/objective-c/GRPCClient/GRPCCall.h
@@ -170,6 +170,13 @@ extern id const kGRPCTrailersKey;
 @property (atomic, copy, readwrite) NSString *serverName;
 
 /**
+ * The timeout for the RPC call in seconds. If set to 0, the call will not timeout. If set to
+ * positive, the gRPC call returns with status GRPCErrorCodeDeadlineExceeded if it is not completed
+ * within \a timeout seconds. A negative value is not allowed.
+ */
+@property NSTimeInterval timeout;
+
+/**
  * The container of the request headers of an RPC conforms to this protocol, which is a subset of
  * NSMutableDictionary's interface. It will become a NSMutableDictionary later on.
  * The keys of this container are the header names, which per the HTTP standard are case-
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 872362419e..d6c3a3c165 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -18,6 +18,8 @@
 
 #import "GRPCCall.h"
 
+#import "GRPCCall+OAuth2.h"
+
 #include <grpc/grpc.h>
 #include <grpc/support/time.h>
 #import <RxLibrary/GRXConcurrentWriteable.h>
@@ -40,10 +42,14 @@ NSString * const kGRPCHeadersKey = @"io.grpc.HeadersKey";
 NSString * const kGRPCTrailersKey = @"io.grpc.TrailersKey";
 static NSMutableDictionary *callFlags;
 
+static NSString * const kAuthorizationHeader = @"authorization";
+static NSString * const kBearerPrefix = @"Bearer ";
+
 @interface GRPCCall () <GRXWriteable>
 // Make them read-write.
 @property(atomic, strong) NSDictionary *responseHeaders;
 @property(atomic, strong) NSDictionary *responseTrailers;
+@property(atomic) BOOL isWaitingForToken;
 @end
 
 // The following methods of a C gRPC call object aren't reentrant, and thus
@@ -181,9 +187,6 @@ static NSMutableDictionary *callFlags;
 
 - (void)finishWithError:(NSError *)errorOrNil {
   @synchronized(self) {
-    if (_state == GRXWriterStateFinished) {
-      return;
-    }
     _state = GRXWriterStateFinished;
   }
 
@@ -211,7 +214,11 @@ static NSMutableDictionary *callFlags;
   [self finishWithError:[NSError errorWithDomain:kGRPCErrorDomain
                                             code:GRPCErrorCodeCancelled
                                         userInfo:@{NSLocalizedDescriptionKey: @"Canceled by app"}]];
-  [self cancelCall];
+  if (!self.isWaitingForToken) {
+    [self cancelCall];
+  } else {
+    self.isWaitingForToken = NO;
+  }
 }
 
 - (void)dealloc {
@@ -410,22 +417,14 @@ static NSMutableDictionary *callFlags;
 
 #pragma mark GRXWriter implementation
 
-- (void)startWithWriteable:(id<GRXWriteable>)writeable {
-  @synchronized(self) {
-    _state = GRXWriterStateStarted;
-  }
-
-  // Create a retain cycle so that this instance lives until the RPC finishes (or is cancelled).
-  // This makes RPCs in which the call isn't externally retained possible (as long as it is started
-  // before being autoreleased).
-  // Care is taken not to retain self strongly in any of the blocks used in this implementation, so
-  // that the life of the instance is determined by this retain cycle.
-  _retainSelf = self;
-
+- (void)startCallWithWriteable:(id<GRXWriteable>)writeable {
   _responseWriteable = [[GRXConcurrentWriteable alloc] initWithWriteable:writeable
                                                            dispatchQueue:_responseQueue];
 
-  _wrappedCall = [[GRPCWrappedCall alloc] initWithHost:_host serverName:_serverName path:_path];
+  _wrappedCall = [[GRPCWrappedCall alloc] initWithHost:_host
+                                            serverName:_serverName
+                                                  path:_path
+                                               timeout:_timeout];
   NSAssert(_wrappedCall, @"Error allocating RPC objects. Low memory?");
 
   [self sendHeaders:_requestHeaders];
@@ -437,20 +436,49 @@ static NSMutableDictionary *callFlags;
     // TODO(jcanizales): Check this on init.
     [NSException raise:NSInvalidArgumentException format:@"host of %@ is nil", _host];
   }
-  __weak typeof(self) weakSelf = self;
   _connectivityMonitor = [GRPCConnectivityMonitor monitorWithHost:host];
+  __weak typeof(self) weakSelf = self;
   void (^handler)() = ^{
     typeof(self) strongSelf = weakSelf;
-    if (strongSelf) {
-      [strongSelf finishWithError:[NSError errorWithDomain:kGRPCErrorDomain
-                                                      code:GRPCErrorCodeUnavailable
-                                                  userInfo:@{ NSLocalizedDescriptionKey : @"Connectivity lost." }]];
-    }
+    [strongSelf finishWithError:[NSError errorWithDomain:kGRPCErrorDomain
+                                                    code:GRPCErrorCodeUnavailable
+                                                userInfo:@{ NSLocalizedDescriptionKey : @"Connectivity lost." }]];
   };
   [_connectivityMonitor handleLossWithHandler:handler
                       wifiStatusChangeHandler:nil];
 }
 
+- (void)startWithWriteable:(id<GRXWriteable>)writeable {
+  @synchronized(self) {
+    _state = GRXWriterStateStarted;
+  }
+
+  // Create a retain cycle so that this instance lives until the RPC finishes (or is cancelled).
+  // This makes RPCs in which the call isn't externally retained possible (as long as it is started
+  // before being autoreleased).
+  // Care is taken not to retain self strongly in any of the blocks used in this implementation, so
+  // that the life of the instance is determined by this retain cycle.
+  _retainSelf = self;
+
+  if (self.tokenProvider != nil) {
+    self.isWaitingForToken = YES;
+    __weak typeof(self) weakSelf = self;
+    [self.tokenProvider getTokenWithHandler:^(NSString *token){
+      typeof(self) strongSelf = weakSelf;
+      if (strongSelf && strongSelf.isWaitingForToken) {
+        if (token) {
+          NSString *t = [kBearerPrefix stringByAppendingString:token];
+          strongSelf.requestHeaders[kAuthorizationHeader] = t;
+        }
+        [strongSelf startCallWithWriteable:writeable];
+        strongSelf.isWaitingForToken = NO;
+      }
+    }];
+  } else {
+    [self startCallWithWriteable:writeable];
+  }
+}
+
 - (void)setState:(GRXWriterState)newState {
   @synchronized(self) {
     // Manual transitions are only allowed from the started or paused states.
diff --git a/src/objective-c/GRPCClient/private/GRPCChannel.h b/src/objective-c/GRPCClient/private/GRPCChannel.h
index e2aa5bd036..d37182f754 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannel.h
+++ b/src/objective-c/GRPCClient/private/GRPCChannel.h
@@ -63,5 +63,6 @@ struct grpc_channel_credentials;
 
 - (nullable grpc_call *)unmanagedCallWithPath:(nonnull NSString *)path
                                    serverName:(nonnull NSString *)serverName
+                                      timeout:(NSTimeInterval)timeout
                               completionQueue:(nonnull GRPCCompletionQueue *)queue;
 @end
diff --git a/src/objective-c/GRPCClient/private/GRPCChannel.m b/src/objective-c/GRPCClient/private/GRPCChannel.m
index 52dbc70b99..b78b14f2af 100644
--- a/src/objective-c/GRPCClient/private/GRPCChannel.m
+++ b/src/objective-c/GRPCClient/private/GRPCChannel.m
@@ -182,18 +182,28 @@ static grpc_channel_args *BuildChannelArgs(NSDictionary *dictionary) {
 
 - (grpc_call *)unmanagedCallWithPath:(NSString *)path
                           serverName:(NSString *)serverName
+                             timeout:(NSTimeInterval)timeout
                      completionQueue:(GRPCCompletionQueue *)queue {
+  GPR_ASSERT(timeout >= 0);
+  if (timeout < 0) {
+    timeout = 0;
+  }
   grpc_slice host_slice;
   if (serverName) {
     host_slice = grpc_slice_from_copied_string(serverName.UTF8String);
   }
   grpc_slice path_slice = grpc_slice_from_copied_string(path.UTF8String);
+  gpr_timespec deadline_ms = timeout == 0 ?
+                                gpr_inf_future(GPR_CLOCK_REALTIME) :
+                                gpr_time_add(
+                                    gpr_now(GPR_CLOCK_MONOTONIC),
+                                    gpr_time_from_millis((int64_t)(timeout * 1000), GPR_TIMESPAN));
   grpc_call *call = grpc_channel_create_call(_unmanagedChannel,
                                              NULL, GRPC_PROPAGATE_DEFAULTS,
                                              queue.unmanagedQueue,
                                              path_slice,
                                              serverName ? &host_slice : NULL,
-                                             gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+                                             deadline_ms, NULL);
   if (serverName) {
     grpc_slice_unref(host_slice);
   }
diff --git a/src/objective-c/GRPCClient/private/GRPCHost.h b/src/objective-c/GRPCClient/private/GRPCHost.h
index 0c1d715240..58171211b0 100644
--- a/src/objective-c/GRPCClient/private/GRPCHost.h
+++ b/src/objective-c/GRPCClient/private/GRPCHost.h
@@ -55,6 +55,7 @@ struct grpc_channel_credentials;
 /** Create a grpc_call object to the provided path on this host. */
 - (nullable struct grpc_call *)unmanagedCallWithPath:(NSString *)path
                                           serverName:(NSString *)serverName
+                                             timeout:(NSTimeInterval)timeout
                                      completionQueue:(GRPCCompletionQueue *)queue;
 
 // TODO: There's a race when a new RPC is coming through just as an existing one is getting
diff --git a/src/objective-c/GRPCClient/private/GRPCHost.m b/src/objective-c/GRPCClient/private/GRPCHost.m
index 23794c1fed..f73e9cbc50 100644
--- a/src/objective-c/GRPCClient/private/GRPCHost.m
+++ b/src/objective-c/GRPCClient/private/GRPCHost.m
@@ -121,6 +121,7 @@ static GRPCConnectivityMonitor *connectivityMonitor = nil;
 
 - (nullable grpc_call *)unmanagedCallWithPath:(NSString *)path
                                    serverName:(NSString *)serverName
+                                      timeout:(NSTimeInterval)timeout
                               completionQueue:(GRPCCompletionQueue *)queue {
   GRPCChannel *channel;
   // This is racing -[GRPCHost disconnect].
@@ -130,7 +131,10 @@ static GRPCConnectivityMonitor *connectivityMonitor = nil;
     }
     channel = _channel;
   }
-  return [channel unmanagedCallWithPath:path serverName:serverName completionQueue:queue];
+  return [channel unmanagedCallWithPath:path
+                             serverName:serverName
+                                timeout:timeout
+                        completionQueue:queue];
 }
 
 - (BOOL)setTLSPEMRootCerts:(nullable NSString *)pemRootCerts
diff --git a/src/objective-c/GRPCClient/private/GRPCRequestHeaders.m b/src/objective-c/GRPCClient/private/GRPCRequestHeaders.m
index 7640a64d6d..5de1d8fff5 100644
--- a/src/objective-c/GRPCClient/private/GRPCRequestHeaders.m
+++ b/src/objective-c/GRPCClient/private/GRPCRequestHeaders.m
@@ -103,7 +103,6 @@ static void CheckKeyValuePairIsValid(NSString *key, id value) {
 }
 
 - (void)setObject:(id)obj forKey:(NSString *)key {
-  [self checkCallIsNotStarted];
   CheckIsNonNilASCII(@"Header name", key);
   key = key.lowercaseString;
   CheckKeyValuePairIsValid(key, obj);
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
index 64075591a3..1cd9da8f3e 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
@@ -76,7 +76,8 @@
 
 - (instancetype)initWithHost:(NSString *)host
                   serverName:(NSString *)serverName
-                        path:(NSString *)path NS_DESIGNATED_INITIALIZER;
+                        path:(NSString *)path
+                     timeout:(NSTimeInterval)timeout NS_DESIGNATED_INITIALIZER;
 
 - (void)startBatchWithOperations:(NSArray *)ops errorHandler:(void(^)())errorHandler;
 
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index 9802465001..b0b1223b64 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -68,6 +68,8 @@
     _op.data.send_initial_metadata.metadata = metadata.grpc_metadataArray;
     _op.data.send_initial_metadata.maybe_compression_level.is_set = false;
     _op.data.send_initial_metadata.maybe_compression_level.level = 0;
+    _op.data.send_initial_metadata.maybe_stream_compression_level.is_set = false;
+    _op.data.send_initial_metadata.maybe_stream_compression_level.level = 0;
     _op.flags = flags;
     _handler = handler;
   }
@@ -236,12 +238,13 @@
 }
 
 - (instancetype)init {
-  return [self initWithHost:nil serverName:nil path:nil];
+  return [self initWithHost:nil serverName:nil path:nil timeout:0];
 }
 
 - (instancetype)initWithHost:(NSString *)host
                   serverName:(NSString *)serverName
-                        path:(NSString *)path {
+                        path:(NSString *)path
+                     timeout:(NSTimeInterval)timeout {
   if (!path || !host) {
     [NSException raise:NSInvalidArgumentException
                 format:@"path and host cannot be nil."];
@@ -253,7 +256,10 @@
     // queue. Currently we use a singleton queue.
     _queue = [GRPCCompletionQueue completionQueue];
 
-    _call = [[GRPCHost hostWithAddress:host] unmanagedCallWithPath:path serverName:serverName completionQueue:_queue];
+    _call = [[GRPCHost hostWithAddress:host] unmanagedCallWithPath:path
+                                                        serverName:serverName
+                                                           timeout:timeout
+                                                   completionQueue:_queue];
     if (_call == NULL) {
       return nil;
     }
diff --git a/src/objective-c/RxLibrary/GRXConcurrentWriteable.m b/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
index cb5d0a63f0..bbfe491783 100644
--- a/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
+++ b/src/objective-c/RxLibrary/GRXConcurrentWriteable.m
@@ -28,7 +28,7 @@
 @implementation GRXConcurrentWriteable {
   dispatch_queue_t _writeableQueue;
   // This ensures that writesFinishedWithError: is only sent once to the writeable.
-  dispatch_once_t _alreadyFinished;
+  BOOL _alreadyFinished;
 }
 
 - (instancetype)init {
@@ -65,19 +65,35 @@
 
 - (void)enqueueSuccessfulCompletion {
   dispatch_async(_writeableQueue, ^{
-    dispatch_once(&_alreadyFinished, ^{
+    BOOL finished = NO;
+    @synchronized (self) {
+      if (!_alreadyFinished) {
+        _alreadyFinished = YES;
+      } else {
+        finished = YES;
+      }
+    }
+    if (!finished) {
       // Cancellation is now impossible. None of the other three blocks can run concurrently with
       // this one.
       [self.writeable writesFinishedWithError:nil];
       // Skip any possible message to the wrapped writeable enqueued after this one.
       self.writeable = nil;
-    });
+    }
   });
 }
 
 - (void)cancelWithError:(NSError *)error {
   NSAssert(error, @"For a successful completion, use enqueueSuccessfulCompletion.");
-  dispatch_once(&_alreadyFinished, ^{
+  BOOL finished = NO;
+  @synchronized (self) {
+    if (!_alreadyFinished) {
+      _alreadyFinished = YES;
+    } else {
+      finished = YES;
+    }
+  }
+  if (!finished) {
     // Skip any of the still-enqueued messages to the wrapped writeable. We use the atomic setter to
     // nillify writeable because we might be running concurrently with the blocks in
     // _writeableQueue, and assignment with ARC isn't atomic.
@@ -87,15 +103,23 @@
     dispatch_async(_writeableQueue, ^{
       [writeable writesFinishedWithError:error];
     });
-  });
+  }
 }
 
 - (void)cancelSilently {
-  dispatch_once(&_alreadyFinished, ^{
+  BOOL finished = NO;
+  @synchronized (self) {
+    if (!_alreadyFinished) {
+      _alreadyFinished = YES;
+    } else {
+      finished = YES;
+    }
+  }
+  if (!finished) {
     // Skip any of the still-enqueued messages to the wrapped writeable. We use the atomic setter to
     // nillify writeable because we might be running concurrently with the blocks in
     // _writeableQueue, and assignment with ARC isn't atomic.
     self.writeable = nil;
-  });
+  }
 }
 @end
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index 9afe507121..82ac2600fa 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -28,6 +28,7 @@
 #import <RemoteTest/Messages.pbobjc.h>
 #import <RxLibrary/GRXWriteable.h>
 #import <RxLibrary/GRXWriter+Immediate.h>
+#import <RxLibrary/GRXBufferedPipe.h>
 
 #define TEST_TIMEOUT 16
 
@@ -39,6 +40,7 @@ static NSString * const kRemoteSSLHost = @"grpc-test.sandbox.googleapis.com";
 static GRPCProtoMethod *kInexistentMethod;
 static GRPCProtoMethod *kEmptyCallMethod;
 static GRPCProtoMethod *kUnaryCallMethod;
+static GRPCProtoMethod *kFullDuplexCallMethod;
 
 /** Observer class for testing that responseMetadata is KVO-compliant */
 @interface PassthroughObserver : NSObject
@@ -106,6 +108,9 @@ static GRPCProtoMethod *kUnaryCallMethod;
   kUnaryCallMethod = [[GRPCProtoMethod alloc] initWithPackage:kPackage
                                                       service:kService
                                                        method:@"UnaryCall"];
+  kFullDuplexCallMethod = [[GRPCProtoMethod alloc] initWithPackage:kPackage
+                                                           service:kService
+                                                            method:@"FullDuplexCall"];
 }
 
 - (void)testConnectionToRemoteServer {
@@ -422,4 +427,26 @@ static GRPCProtoMethod *kUnaryCallMethod;
   [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
 }
 
+- (void)testTimeout {
+  __weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
+
+  GRXBufferedPipe *pipe = [GRXBufferedPipe pipe];
+  GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
+                                             path:kFullDuplexCallMethod.HTTPPath
+                                   requestsWriter:pipe];
+
+  id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
+    XCTAssert(0, @"Failure: response received; Expect: no response received.");
+  } completionHandler:^(NSError *errorOrNil) {
+    XCTAssertNotNil(errorOrNil, @"Failure: no error received; Expect: receive deadline exceeded.");
+    XCTAssertEqual(errorOrNil.code, GRPCErrorCodeDeadlineExceeded);
+    [completion fulfill];
+  }];
+
+  call.timeout = 0.001;
+  [call startWithWriteable:responsesWriteable];
+
+  [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
+}
+
 @end
diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 5b7a2d104a..608ae6884b 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -49,7 +49,8 @@ xcodebuild \
     HOST_PORT_REMOTE=grpc-test.sandbox.googleapis.com \
     test \
     | egrep -v "$XCODEBUILD_FILTER" \
-    | egrep -v '^$' -
+    | egrep -v '^$' \
+    | egrep -v "(GPBDictionary|GPBArray)" -
 
 echo "TIME:  $(date)"
 xcodebuild \
@@ -57,7 +58,8 @@ xcodebuild \
     -scheme CoreCronetEnd2EndTests \
     -destination name="iPhone 6" \
     test \
-    | egrep "$XCODEBUILD_FILTER" \
+    | egrep -v "$XCODEBUILD_FILTER" \
+    | egrep -v '^$' \
     | egrep -v "(GPBDictionary|GPBArray)" -
 
 echo "TIME:  $(date)"
@@ -65,7 +67,10 @@ xcodebuild \
     -workspace Tests.xcworkspace \
     -scheme CronetUnitTests \
     -destination name="iPhone 6" \
-    test | xcpretty
+    test \
+    | egrep -v "$XCODEBUILD_FILTER" \
+    | egrep -v '^$' \
+    | egrep -v "(GPBDictionary|GPBArray)" -
 
 echo "TIME:  $(date)"
 xcodebuild \
@@ -74,5 +79,6 @@ xcodebuild \
     -destination name="iPhone 6" \
     HOST_PORT_REMOTE=grpc-test.sandbox.googleapis.com \
     test \
-    | egrep "$XCODEBUILD_FILTER" \
+    | egrep -v "$XCODEBUILD_FILTER" \
+    | egrep -v '^$' \
     | egrep -v "(GPBDictionary|GPBArray)" -
diff --git a/src/php/ext/grpc/call_credentials.c b/src/php/ext/grpc/call_credentials.c
index f46091d709..1eee8645df 100644
--- a/src/php/ext/grpc/call_credentials.c
+++ b/src/php/ext/grpc/call_credentials.c
@@ -179,7 +179,7 @@ void plugin_get_metadata(void *ptr, grpc_auth_metadata_context context,
   grpc_metadata_array metadata;
   bool cleanup = true;
 
-  if (Z_TYPE_P(retval) != IS_ARRAY) {
+  if (retval == NULL || Z_TYPE_P(retval) != IS_ARRAY) {
     cleanup = false;
     code = GRPC_STATUS_INVALID_ARGUMENT;
   } else if (!create_metadata_array(retval, &metadata)) {
diff --git a/src/php/ext/grpc/channel.c b/src/php/ext/grpc/channel.c
index f1187e8722..dc3acc89bb 100644
--- a/src/php/ext/grpc/channel.c
+++ b/src/php/ext/grpc/channel.c
@@ -66,6 +66,8 @@ PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_channel)
       if (!(PHP_GRPC_PERSISTENT_LIST_FIND(&EG(persistent_list), p->wrapper->key,
                                           key_len, rsrc))) {
         grpc_channel_destroy(p->wrapper->wrapped);
+        free(p->wrapper->target);
+        free(p->wrapper->args_hashstr);
       }
       gpr_mu_unlock(&global_persistent_list_mu);
     }
@@ -158,7 +160,7 @@ void create_and_add_channel_to_persistent_list(
     grpc_channel_args args,
     wrapped_grpc_channel_credentials *creds,
     char *key,
-    php_grpc_int key_len) {
+    php_grpc_int key_len TSRMLS_DC) {
   php_grpc_zend_resource new_rsrc;
   channel_persistent_le_t *le;
   // this links each persistent list entry to a destructor
@@ -187,10 +189,8 @@ void create_and_add_channel_to_persistent_list(
  * credentials.
  *
  * If the $args array contains a "force_new" key mapping to a boolean value
- * of "true", a new underlying grpc_channel will be created regardless. If
- * there are any opened channels on the same hostname, user must manually
- * call close() on those dangling channels before the end of the PHP
- * script.
+ * of "true", a new and separate underlying grpc_channel will be created
+ * and returned. This will not affect existing channels.
  *
  * @param string $target The hostname to associate with this channel
  * @param array $args_array The arguments to pass to the Channel
@@ -273,19 +273,15 @@ PHP_METHOD(Channel, __construct) {
   }
   channel->wrapper = malloc(sizeof(grpc_channel_wrapper));
   channel->wrapper->key = key;
-  channel->wrapper->target = target;
-  channel->wrapper->args_hashstr = sha1str;
+  channel->wrapper->target = strdup(target);
+  channel->wrapper->args_hashstr = strdup(sha1str);
   if (creds != NULL && creds->hashstr != NULL) {
     channel->wrapper->creds_hashstr = creds->hashstr;
   }
   gpr_mu_init(&channel->wrapper->mu);
   smart_str_free(&buf);
 
-  if (force_new) {
-    php_grpc_delete_persistent_list_entry(key, key_len TSRMLS_CC);
-  }
-
-  if (creds != NULL && creds->has_call_creds) {
+  if (force_new || (creds != NULL && creds->has_call_creds)) {
     // If the ChannelCredentials object was composed with a CallCredentials
     // object, there is no way we can tell them apart. Do NOT persist
     // them. They should be individually destroyed.
@@ -293,7 +289,7 @@ PHP_METHOD(Channel, __construct) {
   } else if (!(PHP_GRPC_PERSISTENT_LIST_FIND(&EG(persistent_list), key,
                                              key_len, rsrc))) {
     create_and_add_channel_to_persistent_list(
-        channel, target, args, creds, key, key_len);
+        channel, target, args, creds, key, key_len TSRMLS_CC);
   } else {
     // Found a previously stored channel in the persistent list
     channel_persistent_le_t *le = (channel_persistent_le_t *)rsrc->ptr;
@@ -303,7 +299,7 @@ PHP_METHOD(Channel, __construct) {
          strcmp(creds->hashstr, le->channel->creds_hashstr) != 0)) {
       // somehow hash collision
       create_and_add_channel_to_persistent_list(
-          channel, target, args, creds, key, key_len);
+          channel, target, args, creds, key, key_len TSRMLS_CC);
     } else {
       channel->wrapper = le->channel;
     }
@@ -416,12 +412,14 @@ PHP_METHOD(Channel, close) {
   gpr_mu_lock(&channel->wrapper->mu);
   if (channel->wrapper->wrapped != NULL) {
     grpc_channel_destroy(channel->wrapper->wrapped);
+    free(channel->wrapper->target);
+    free(channel->wrapper->args_hashstr);
     channel->wrapper->wrapped = NULL;
-  }
 
-  php_grpc_delete_persistent_list_entry(channel->wrapper->key,
-                                        strlen(channel->wrapper->key)
-                                        TSRMLS_CC);
+    php_grpc_delete_persistent_list_entry(channel->wrapper->key,
+                                          strlen(channel->wrapper->key)
+                                          TSRMLS_CC);
+  }
   gpr_mu_unlock(&channel->wrapper->mu);
 }
 
@@ -449,12 +447,11 @@ static void php_grpc_channel_plink_dtor(php_grpc_zend_resource *rsrc
     gpr_mu_lock(&le->channel->mu);
     if (le->channel->wrapped != NULL) {
       grpc_channel_destroy(le->channel->wrapped);
-      free(le->channel->key);
-      free(le->channel);
+      free(le->channel->target);
+      free(le->channel->args_hashstr);
     }
     gpr_mu_unlock(&le->channel->mu);
   }
-  free(le);
 }
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_construct, 0, 0, 2)
@@ -496,6 +493,7 @@ GRPC_STARTUP_FUNCTION(channel) {
   INIT_CLASS_ENTRY(ce, "Grpc\\Channel", channel_methods);
   ce.create_object = create_wrapped_grpc_channel;
   grpc_ce_channel = zend_register_internal_class(&ce TSRMLS_CC);
+  gpr_mu_init(&global_persistent_list_mu);
   le_plink = zend_register_list_destructors_ex(
       NULL, php_grpc_channel_plink_dtor, "Persistent Channel", module_number);
   PHP_GRPC_INIT_HANDLER(wrapped_grpc_channel, channel_ce_handlers);
diff --git a/src/php/ext/grpc/channel_credentials.c b/src/php/ext/grpc/channel_credentials.c
index 19e1cefb6f..86e4f46c67 100644
--- a/src/php/ext/grpc/channel_credentials.c
+++ b/src/php/ext/grpc/channel_credentials.c
@@ -135,6 +135,8 @@ PHP_METHOD(ChannelCredentials, createSsl) {
 
   pem_key_cert_pair.private_key = pem_key_cert_pair.cert_chain = NULL;
 
+  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
+
   /* "|s!s!s!" == 3 optional nullable strings */
   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!",
                             &pem_root_certs, &root_certs_length,
@@ -148,7 +150,7 @@ PHP_METHOD(ChannelCredentials, createSsl) {
   }
 
   php_grpc_int hashkey_len = root_certs_length + cert_chain_length;
-  char hashkey[hashkey_len];
+  char *hashkey = emalloc(hashkey_len);
   if (root_certs_length > 0) {
     strcpy(hashkey, pem_root_certs);
   }
@@ -164,6 +166,7 @@ PHP_METHOD(ChannelCredentials, createSsl) {
       pem_key_cert_pair.private_key == NULL ? NULL : &pem_key_cert_pair, NULL);
   zval *creds_object = grpc_php_wrap_channel_credentials(creds, hashstr, false
                                                          TSRMLS_CC);
+  efree(hashkey);
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
@@ -177,6 +180,8 @@ PHP_METHOD(ChannelCredentials, createComposite) {
   zval *cred1_obj;
   zval *cred2_obj;
 
+  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
+
   /* "OO" == 2 Objects */
   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "OO", &cred1_obj,
                             grpc_ce_channel_credentials, &cred2_obj,
@@ -245,7 +250,6 @@ void grpc_init_channel_credentials(TSRMLS_D) {
   zend_class_entry ce;
   INIT_CLASS_ENTRY(ce, "Grpc\\ChannelCredentials",
                    channel_credentials_methods);
-  grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
   ce.create_object = create_wrapped_grpc_channel_credentials;
   grpc_ce_channel_credentials = zend_register_internal_class(&ce TSRMLS_CC);
   PHP_GRPC_INIT_HANDLER(wrapped_grpc_channel_credentials,
diff --git a/src/php/ext/grpc/php_grpc.c b/src/php/ext/grpc/php_grpc.c
index a96daf7d9b..0f2c5b8114 100644
--- a/src/php/ext/grpc/php_grpc.c
+++ b/src/php/ext/grpc/php_grpc.c
@@ -34,7 +34,8 @@
 #include <ext/standard/info.h>
 #include "php_grpc.h"
 
-// ZEND_DECLARE_MODULE_GLOBALS(grpc)
+ZEND_DECLARE_MODULE_GLOBALS(grpc)
+static PHP_GINIT_FUNCTION(grpc);
 
 /* {{{ grpc_functions[]
  *
@@ -48,20 +49,20 @@ const zend_function_entry grpc_functions[] = {
 /* {{{ grpc_module_entry
  */
 zend_module_entry grpc_module_entry = {
-#if ZEND_MODULE_API_NO >= 20010901
   STANDARD_MODULE_HEADER,
-#endif
   "grpc",
   grpc_functions,
   PHP_MINIT(grpc),
   PHP_MSHUTDOWN(grpc),
-  NULL,
+  PHP_RINIT(grpc),
   NULL,
   PHP_MINFO(grpc),
-#if ZEND_MODULE_API_NO >= 20010901
   PHP_GRPC_VERSION,
-#endif
-  STANDARD_MODULE_PROPERTIES};
+  PHP_MODULE_GLOBALS(grpc),
+  PHP_GINIT(grpc),
+  NULL,
+  NULL,
+  STANDARD_MODULE_PROPERTIES_EX};
 /* }}} */
 
 #ifdef COMPILE_DL_GRPC
@@ -99,7 +100,6 @@ PHP_MINIT_FUNCTION(grpc) {
      REGISTER_INI_ENTRIES();
   */
   /* Register call error constants */
-  grpc_init();
   REGISTER_LONG_CONSTANT("Grpc\\CALL_OK", GRPC_CALL_OK,
                          CONST_CS | CONST_PERSISTENT);
   REGISTER_LONG_CONSTANT("Grpc\\CALL_ERROR", GRPC_CALL_ERROR,
@@ -227,7 +227,6 @@ PHP_MINIT_FUNCTION(grpc) {
   grpc_init_channel_credentials(TSRMLS_C);
   grpc_init_call_credentials(TSRMLS_C);
   grpc_init_server_credentials(TSRMLS_C);
-  grpc_php_init_completion_queue(TSRMLS_C);
   return SUCCESS;
 }
 /* }}} */
@@ -240,9 +239,12 @@ PHP_MSHUTDOWN_FUNCTION(grpc) {
   */
   // WARNING: This function IS being called by PHP when the extension
   // is unloaded but the logs were somehow suppressed.
-  grpc_shutdown_timeval(TSRMLS_C);
-  grpc_php_shutdown_completion_queue(TSRMLS_C);
-  grpc_shutdown();
+  if (GRPC_G(initialized)) {
+    grpc_shutdown_timeval(TSRMLS_C);
+    grpc_php_shutdown_completion_queue(TSRMLS_C);
+    grpc_shutdown();
+    GRPC_G(initialized) = 0;
+  }
   return SUCCESS;
 }
 /* }}} */
@@ -259,6 +261,26 @@ PHP_MINFO_FUNCTION(grpc) {
   */
 }
 /* }}} */
+
+/* {{{ PHP_RINIT_FUNCTION
+ */
+PHP_RINIT_FUNCTION(grpc) {
+  if (!GRPC_G(initialized)) {
+    grpc_init();
+    grpc_php_init_completion_queue(TSRMLS_C);
+    GRPC_G(initialized) = 1;
+  }
+  return SUCCESS;
+}
+/* }}} */
+
+/* {{{ PHP_GINIT_FUNCTION
+ */
+static PHP_GINIT_FUNCTION(grpc) {
+  grpc_globals->initialized = 0;
+}
+/* }}} */
+
 /* The previous line is meant for vim and emacs, so it can correctly fold and
    unfold functions in source code. See the corresponding marks just before
    function definition, where the functions purpose is also documented. Please
diff --git a/src/php/ext/grpc/php_grpc.h b/src/php/ext/grpc/php_grpc.h
index 32329178dc..e30f011c39 100644
--- a/src/php/ext/grpc/php_grpc.h
+++ b/src/php/ext/grpc/php_grpc.h
@@ -49,14 +49,16 @@ PHP_MINIT_FUNCTION(grpc);
 PHP_MSHUTDOWN_FUNCTION(grpc);
 /* Displays information about the module */
 PHP_MINFO_FUNCTION(grpc);
+/* Code that runs at request start */
+PHP_RINIT_FUNCTION(grpc);
 
 /*
   Declare any global variables you may need between the BEGIN
   and END macros here:
-
+*/
 ZEND_BEGIN_MODULE_GLOBALS(grpc)
+  zend_bool initialized;
 ZEND_END_MODULE_GLOBALS(grpc)
-*/
 
 /* In every utility function you add that needs to use variables
    in php_grpc_globals, call TSRMLS_FETCH(); after declaring other
diff --git a/src/php/tests/qps/composer.json b/src/php/tests/qps/composer.json
index 8c1e7b6c74..f8512648c4 100644
--- a/src/php/tests/qps/composer.json
+++ b/src/php/tests/qps/composer.json
@@ -1,8 +1,7 @@
 {
-  "minimum-stability": "dev",
   "require": {
     "grpc/grpc": "dev-master",
-    "google/protobuf": "^v3.3.0"
+    "google/protobuf": "v3.4.1"
   },
   "autoload": {
     "psr-4": {
diff --git a/src/php/tests/unit_tests/ChannelTest.php b/src/php/tests/unit_tests/ChannelTest.php
index 400df0fb66..c375a16269 100644
--- a/src/php/tests/unit_tests/ChannelTest.php
+++ b/src/php/tests/unit_tests/ChannelTest.php
@@ -517,8 +517,6 @@ class ChannelTest extends PHPUnit_Framework_TestCase
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
 
-        // any dangling old connection to the same host must be
-        // manually closed
         $this->channel1->close();
         $this->channel2->close();
     }
@@ -529,6 +527,7 @@ class ChannelTest extends PHPUnit_Framework_TestCase
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);
+        // channel3 shares with channel1
         $this->channel3 = new Grpc\Channel('localhost:1', []);
 
         // try to connect on channel2
@@ -540,29 +539,31 @@ class ChannelTest extends PHPUnit_Framework_TestCase
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel3->getConnectivityState();
-        $this->assertConnecting($state);
+        $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
 
         $this->channel1->close();
         $this->channel2->close();
     }
 
+    /**
+     * @expectedException RuntimeException
+     */
     public function testPersistentChannelForceNewOldChannelClose()
     {
 
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);
+        // channel3 shares with channel1
         $this->channel3 = new Grpc\Channel('localhost:1', []);
 
         $this->channel1->close();
 
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
-        $state = $this->channel3->getConnectivityState();
-        $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
 
-        $this->channel2->close();
-        $this->channel3->close();
+        // channel3 already closed
+        $state = $this->channel3->getConnectivityState();
     }
 
     public function testPersistentChannelForceNewNewChannelClose()
diff --git a/templates/vsprojects/build_test_protos.sh b/src/proto/grpc/core/BUILD
index ef6f786bfd..46de9fae18 100644
--- a/templates/vsprojects/build_test_protos.sh
+++ b/src/proto/grpc/core/BUILD
@@ -1,6 +1,4 @@
-#!/bin/sh
-
-# Copyright 2015 gRPC authors.
+# Copyright 2017 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,14 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-GRPC_CPP_PLUGIN_PATH=`which grpc_cpp_plugin`
+licenses(["notice"])  # Apache v2
+
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-cd `dirname $0`/../..
+grpc_package(name = "core", visibility = "public")
 
-find ./test -type f -name "*.proto" |
-while read p ; do
-  echo "processing $p"
-  DIR=$(dirname "$p")
-  protoc $p --grpc_out=./ --plugin=protoc-gen-grpc=$GRPC_CPP_PLUGIN_PATH
-  protoc $p --cpp_out=./
-done
+grpc_proto_library(
+    name = "stats_proto",
+    srcs = ["stats.proto"],
+)
diff --git a/src/proto/grpc/core/stats.proto b/src/proto/grpc/core/stats.proto
new file mode 100644
index 0000000000..ac181b0439
--- /dev/null
+++ b/src/proto/grpc/core/stats.proto
@@ -0,0 +1,38 @@
+// Copyright 2017 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package grpc.core;
+
+message Bucket {
+  double start = 1;
+  uint64 count = 2;
+}
+
+message Histogram {
+  repeated Bucket buckets = 1;
+}
+
+message Metric {
+  string name = 1;
+  oneof value {
+    uint64 count = 10;
+    Histogram histogram = 11;
+  }
+}
+
+message Stats {
+  repeated Metric metrics = 1;
+}
diff --git a/src/proto/grpc/health/v1/BUILD b/src/proto/grpc/health/v1/BUILD
index 6f6779594b..d234842883 100644
--- a/src/proto/grpc/health/v1/BUILD
+++ b/src/proto/grpc/health/v1/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "health", visibility = "public")
 
 grpc_proto_library(
     name = "health_proto",
diff --git a/src/proto/grpc/lb/v1/BUILD b/src/proto/grpc/lb/v1/BUILD
index 61b28ee3bb..15bf3c3233 100644
--- a/src/proto/grpc/lb/v1/BUILD
+++ b/src/proto/grpc/lb/v1/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "lb", visibility = "public")
 
 grpc_proto_library(
     name = "load_balancer_proto",
diff --git a/src/proto/grpc/reflection/v1alpha/BUILD b/src/proto/grpc/reflection/v1alpha/BUILD
index b60784e9d9..4605418447 100644
--- a/src/proto/grpc/reflection/v1alpha/BUILD
+++ b/src/proto/grpc/reflection/v1alpha/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "reflection", visibility = "public")
 
 grpc_proto_library(
     name = "reflection_proto",
diff --git a/src/proto/grpc/status/BUILD b/src/proto/grpc/status/BUILD
index 61688e5f96..14315d36e3 100644
--- a/src/proto/grpc/status/BUILD
+++ b/src/proto/grpc/status/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "status", visibility = "public")
 
 grpc_proto_library(
     name = "status_proto",
diff --git a/src/proto/grpc/testing/BUILD b/src/proto/grpc/testing/BUILD
index c8e7d03cb0..36d3782262 100644
--- a/src/proto/grpc/testing/BUILD
+++ b/src/proto/grpc/testing/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "testing", visibility = "public")
 
 grpc_proto_library(
     name = "compiler_test_proto",
@@ -90,6 +84,9 @@ grpc_proto_library(
     name = "stats_proto",
     srcs = ["stats.proto"],
     has_services = False,
+    deps = [
+        "//src/proto/grpc/core:stats_proto",
+    ]
 )
 
 grpc_proto_library(
diff --git a/src/proto/grpc/testing/duplicate/BUILD b/src/proto/grpc/testing/duplicate/BUILD
index 8f91710999..714c9a7518 100644
--- a/src/proto/grpc/testing/duplicate/BUILD
+++ b/src/proto/grpc/testing/duplicate/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 
-load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
+grpc_package(name = "duplicate", visibility = "public")
 
 grpc_proto_library(
     name = "echo_duplicate_proto",
diff --git a/src/proto/grpc/testing/stats.proto b/src/proto/grpc/testing/stats.proto
index c738c4f895..a0f84ddbce 100644
--- a/src/proto/grpc/testing/stats.proto
+++ b/src/proto/grpc/testing/stats.proto
@@ -16,6 +16,8 @@ syntax = "proto3";
 
 package grpc.testing;
 
+import "src/proto/grpc/core/stats.proto";
+
 message ServerStats {
   // wall clock time change in seconds since last reset
   double time_elapsed = 1;
@@ -35,6 +37,9 @@ message ServerStats {
 
   // Number of polls called inside completion queue
   uint64 cq_poll_count = 6;
+
+  // Core library stats
+  grpc.core.Stats core_stats = 7;
 }
 
 // Histogram params based on grpc/support/histogram.c
@@ -72,4 +77,7 @@ message ClientStats {
 
   // Number of polls called inside completion queue
   uint64 cq_poll_count = 6;
+
+  // Core library stats
+  grpc.core.Stats core_stats = 7;
 }
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
index 28c30e5d35..237f430799 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
@@ -41,9 +41,8 @@ cdef class CompletionQueue:
     cdef object user_tag = None
     cdef Call operation_call = None
     cdef CallDetails request_call_details = None
-    cdef Metadata request_metadata = None
+    cdef object request_metadata = None
     cdef Operations batch_operations = None
-    cdef Operation batch_operation = None
     if event.type == GRPC_QUEUE_TIMEOUT:
       return Event(
           event.type, False, None, None, None, None, False, None)
@@ -63,14 +62,8 @@ cdef class CompletionQueue:
         operation_call = tag.operation_call
         request_call_details = tag.request_call_details
         if tag.request_metadata is not None:
-          request_metadata = tag.request_metadata
-          request_metadata._claim_slice_ownership()
+          request_metadata = tuple(tag.request_metadata)
         batch_operations = tag.batch_operations
-        if tag.batch_operations is not None:
-          for op in batch_operations.operations:
-            batch_operation = <Operation>op
-            if batch_operation._received_metadata is not None:
-              batch_operation._received_metadata._claim_slice_ownership()
         if tag.is_new_request:
           # Stuff in the tag not explicitly handled by us needs to live through
           # the life of the call
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi
index 98d7a9820d..57816f1cab 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi
@@ -76,7 +76,7 @@ cdef class CredentialsMetadataPlugin:
     """
     Args:
       plugin_callback (callable): Callback accepting a service URL (str/bytes)
-        and callback object (accepting a Metadata,
+        and callback object (accepting a MetadataArray,
         grpc_status_code, and a str/bytes error message). This argument
         when called should be non-blocking and eventually call the callback
         object with the appropriate status code/details and metadata (if
@@ -129,8 +129,7 @@ cdef void plugin_get_metadata(
   def python_callback(
       Metadata metadata, grpc_status_code status,
       bytes error_details):
-    cb(user_data, metadata.c_metadata_array.metadata,
-       metadata.c_metadata_array.count, status, error_details)
+    cb(user_data, metadata.c_metadata, metadata.c_count, status, error_details)
     called_flag[0] = True
   cdef CredentialsMetadataPlugin self = <CredentialsMetadataPlugin>state
   cdef AuthMetadataContext cy_context = AuthMetadataContext()
@@ -139,8 +138,8 @@ cdef void plugin_get_metadata(
     self.plugin_callback(cy_context, python_callback)
   except Exception as error:
     if not called_flag[0]:
-      cb(user_data, Metadata([]).c_metadata_array.metadata,
-         0, StatusCode.unknown, traceback.format_exc().encode())
+      cb(user_data, NULL, 0, StatusCode.unknown,
+         traceback.format_exc().encode())
 
 cdef void plugin_destroy_c_plugin_state(void *state) with gil:
   cpython.Py_DECREF(<CredentialsMetadataPlugin>state)
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
index 5950bfa0e6..840af5c43a 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
@@ -59,6 +59,7 @@ cdef extern from "grpc/grpc.h":
   grpc_slice grpc_slice_malloc(size_t length) nogil
   grpc_slice grpc_slice_from_copied_string(const char *source) nogil
   grpc_slice grpc_slice_from_copied_buffer(const char *source, size_t len) nogil
+  grpc_slice grpc_slice_copy(grpc_slice s) nogil
 
   # Declare functions for function-like macros (because Cython)...
   void *grpc_slice_start_ptr "GRPC_SLICE_START_PTR" (grpc_slice s) nogil
@@ -522,7 +523,7 @@ cdef extern from "grpc/compression.h":
   int grpc_compression_algorithm_parse(
       grpc_slice value, grpc_compression_algorithm *algorithm) nogil
   int grpc_compression_algorithm_name(grpc_compression_algorithm algorithm,
-                                      char **name) nogil
+                                      const char **name) nogil
   grpc_compression_algorithm grpc_compression_algorithm_for_level(
       grpc_compression_level level, uint32_t accepted_encodings) nogil
   void grpc_compression_options_init(grpc_compression_options *opts) nogil
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
index 8ace6aeb52..9c40ebf0c2 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/records.pxd.pxi
@@ -37,7 +37,7 @@ cdef class OperationTag:
   cdef Server shutting_down_server
   cdef Call operation_call
   cdef CallDetails request_call_details
-  cdef Metadata request_metadata
+  cdef MetadataArray request_metadata
   cdef Operations batch_operations
   cdef bint is_new_request
 
@@ -51,7 +51,7 @@ cdef class Event:
   # For Server.request_call
   cdef readonly bint is_new_request
   cdef readonly CallDetails request_call_details
-  cdef readonly Metadata request_metadata
+  cdef readonly object request_metadata
 
   # For server calls
   cdef readonly Call operation_call
@@ -92,15 +92,20 @@ cdef class Metadatum:
 
 cdef class Metadata:
 
+  cdef grpc_metadata *c_metadata
+  cdef readonly size_t c_count
+
+
+cdef class MetadataArray:
+
   cdef grpc_metadata_array c_metadata_array
-  cdef void _claim_slice_ownership(self)
 
 
 cdef class Operation:
 
   cdef grpc_op c_op
   cdef ByteBuffer _received_message
-  cdef Metadata _received_metadata
+  cdef MetadataArray _received_metadata
   cdef grpc_status_code _received_status_code
   cdef grpc_slice _status_details
   cdef int _received_cancelled
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/records.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/records.pyx.pxi
index 1b2ddd2469..d860173b5d 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/records.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/records.pyx.pxi
@@ -238,7 +238,7 @@ cdef class Event:
   def __cinit__(self, grpc_completion_type type, bint success,
                 object tag, Call operation_call,
                 CallDetails request_call_details,
-                Metadata request_metadata,
+                object request_metadata,
                 bint is_new_request,
                 Operations batch_operations):
     self.type = type
@@ -437,48 +437,79 @@ cdef class Metadatum:
 cdef class _MetadataIterator:
 
   cdef size_t i
-  cdef Metadata metadata
+  cdef size_t _length
+  cdef object _metadatum_indexable
 
-  def __cinit__(self, Metadata metadata not None):
+  def __cinit__(self, length, metadatum_indexable):
+    self._length = length
+    self._metadatum_indexable = metadatum_indexable
     self.i = 0
-    self.metadata = metadata
 
   def __iter__(self):
     return self
 
   def __next__(self):
-    if self.i < len(self.metadata):
-      result = self.metadata[self.i]
+    if self.i < self._length:
+      result = self._metadatum_indexable[self.i]
       self.i = self.i + 1
       return result
     else:
       raise StopIteration
 
 
+# TODO(https://github.com/grpc/grpc/issues/7950): Eliminate this; just use an
+# ordinary sequence of pairs of bytestrings all the way down to the
+# grpc_call_start_batch call.
 cdef class Metadata:
+  """Metadata being passed from application to core."""
 
   def __cinit__(self, metadata_iterable):
+    metadata_sequence = tuple(metadata_iterable)
+    cdef size_t count = len(metadata_sequence)
     with nogil:
       grpc_init()
-      grpc_metadata_array_init(&self.c_metadata_array)
-    metadata = list(metadata_iterable)
-    for metadatum in metadata:
-      if not isinstance(metadatum, Metadatum):
-        raise TypeError("expected list of Metadatum")
-    self.c_metadata_array.count = len(metadata)
-    self.c_metadata_array.capacity = len(metadata)
+      self.c_metadata = <grpc_metadata *>gpr_malloc(
+          count * sizeof(grpc_metadata))
+      self.c_count = count
+    for index, metadatum in enumerate(metadata_sequence):
+      self.c_metadata[index].key = grpc_slice_copy(
+          (<Metadatum>metadatum).c_metadata.key)
+      self.c_metadata[index].value = grpc_slice_copy(
+          (<Metadatum>metadatum).c_metadata.value)
+
+  def __dealloc__(self):
+    with nogil:
+      for index in range(self.c_count):
+        grpc_slice_unref(self.c_metadata[index].key)
+        grpc_slice_unref(self.c_metadata[index].value)
+      gpr_free(self.c_metadata)
+      grpc_shutdown()
+
+  def __len__(self):
+    return self.c_count
+
+  def __getitem__(self, size_t index):
+    if index < self.c_count:
+      key = _slice_bytes(self.c_metadata[index].key)
+      value = _slice_bytes(self.c_metadata[index].value)
+      return Metadatum(key, value)
+    else:
+      raise IndexError()
+
+  def __iter__(self):
+    return _MetadataIterator(self.c_count, self)
+
+
+cdef class MetadataArray:
+  """Metadata being passed from core to application."""
+
+  def __cinit__(self):
     with nogil:
-      self.c_metadata_array.metadata = <grpc_metadata *>gpr_malloc(
-          self.c_metadata_array.count*sizeof(grpc_metadata)
-      )
-    for i in range(self.c_metadata_array.count):
-      (<Metadatum>metadata[i])._copy_metadatum(&self.c_metadata_array.metadata[i])
+      grpc_init()
+      grpc_metadata_array_init(&self.c_metadata_array)
 
   def __dealloc__(self):
     with nogil:
-      # this frees the allocated memory for the grpc_metadata_array (although
-      # it'd be nice if that were documented somewhere...)
-      # TODO(atash): document this in the C core
       grpc_metadata_array_destroy(&self.c_metadata_array)
       grpc_shutdown()
 
@@ -493,21 +524,7 @@ cdef class Metadata:
     return Metadatum(key=key, value=value)
 
   def __iter__(self):
-    return _MetadataIterator(self)
-
-  cdef void _claim_slice_ownership(self):
-    cdef grpc_metadata_array new_c_metadata_array
-    grpc_metadata_array_init(&new_c_metadata_array)
-    new_c_metadata_array.metadata = <grpc_metadata *>gpr_malloc(
-        self.c_metadata_array.count*sizeof(grpc_metadata))
-    new_c_metadata_array.count = self.c_metadata_array.count
-    for i in range(self.c_metadata_array.count):
-      new_c_metadata_array.metadata[i].key = _copy_slice(
-          self.c_metadata_array.metadata[i].key)
-      new_c_metadata_array.metadata[i].value = _copy_slice(
-          self.c_metadata_array.metadata[i].value)
-    grpc_metadata_array_destroy(&self.c_metadata_array)
-    self.c_metadata_array = new_c_metadata_array
+    return _MetadataIterator(self.c_metadata_array.count, self)
 
 
 cdef class Operation:
@@ -547,14 +564,13 @@ cdef class Operation:
     if (self.c_op.type != GRPC_OP_RECV_INITIAL_METADATA and
         self.c_op.type != GRPC_OP_RECV_STATUS_ON_CLIENT):
       raise TypeError("self must be an operation receiving metadata")
-    return self._received_metadata
-
-  @property
-  def received_metadata_or_none(self):
-    if (self.c_op.type != GRPC_OP_RECV_INITIAL_METADATA and
-        self.c_op.type != GRPC_OP_RECV_STATUS_ON_CLIENT):
-      return None
-    return self._received_metadata
+    # TODO(https://github.com/grpc/grpc/issues/7950): Drop the "all Cython
+    # objects must be legitimate for use from Python at any time" policy in
+    # place today, shift the policy toward "Operation objects are only usable
+    # while their calls are active", and move this making-a-copy-because-this-
+    # data-needs-to-live-much-longer-than-the-call-from-which-it-arose to the
+    # lowest Python layer.
+    return tuple(self._received_metadata)
 
   @property
   def received_status_code(self):
@@ -601,9 +617,8 @@ def operation_send_initial_metadata(Metadata metadata, int flags):
   cdef Operation op = Operation()
   op.c_op.type = GRPC_OP_SEND_INITIAL_METADATA
   op.c_op.flags = flags
-  op.c_op.data.send_initial_metadata.count = metadata.c_metadata_array.count
-  op.c_op.data.send_initial_metadata.metadata = (
-      metadata.c_metadata_array.metadata)
+  op.c_op.data.send_initial_metadata.count = metadata.c_count
+  op.c_op.data.send_initial_metadata.metadata = metadata.c_metadata
   op.references.append(metadata)
   op.is_valid = True
   return op
@@ -631,9 +646,8 @@ def operation_send_status_from_server(
   op.c_op.type = GRPC_OP_SEND_STATUS_FROM_SERVER
   op.c_op.flags = flags
   op.c_op.data.send_status_from_server.trailing_metadata_count = (
-      metadata.c_metadata_array.count)
-  op.c_op.data.send_status_from_server.trailing_metadata = (
-      metadata.c_metadata_array.metadata)
+      metadata.c_count)
+  op.c_op.data.send_status_from_server.trailing_metadata = metadata.c_metadata
   op.c_op.data.send_status_from_server.status = code
   grpc_slice_unref(op._status_details)
   op._status_details = _slice_from_bytes(details)
@@ -646,7 +660,7 @@ def operation_receive_initial_metadata(int flags):
   cdef Operation op = Operation()
   op.c_op.type = GRPC_OP_RECV_INITIAL_METADATA
   op.c_op.flags = flags
-  op._received_metadata = Metadata([])
+  op._received_metadata = MetadataArray()
   op.c_op.data.receive_initial_metadata.receive_initial_metadata = (
       &op._received_metadata.c_metadata_array)
   op.is_valid = True
@@ -669,7 +683,7 @@ def operation_receive_status_on_client(int flags):
   cdef Operation op = Operation()
   op.c_op.type = GRPC_OP_RECV_STATUS_ON_CLIENT
   op.c_op.flags = flags
-  op._received_metadata = Metadata([])
+  op._received_metadata = MetadataArray()
   op.c_op.data.receive_status_on_client.trailing_metadata = (
       &op._received_metadata.c_metadata_array)
   op.c_op.data.receive_status_on_client.status = (
@@ -768,7 +782,7 @@ cdef class CompressionOptions:
 
 
 def compression_algorithm_name(grpc_compression_algorithm algorithm):
-  cdef char* name
+  cdef const char* name
   with nogil:
     grpc_compression_algorithm_name(algorithm, &name)
   # Let Cython do the right thing with string casting
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
index dd276fd57b..b8db27469f 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi
@@ -44,7 +44,7 @@ cdef class Server:
     cdef OperationTag operation_tag = OperationTag(tag)
     operation_tag.operation_call = Call()
     operation_tag.request_call_details = CallDetails()
-    operation_tag.request_metadata = Metadata([])
+    operation_tag.request_metadata = MetadataArray()
     operation_tag.references.extend([self, call_queue, server_queue])
     operation_tag.is_new_request = True
     operation_tag.batch_operations = Operations([])
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index dc4d28f95b..7b684f2a58 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -72,9 +72,14 @@ CORE_SOURCE_FILES = [
   'src/core/lib/compression/compression.c',
   'src/core/lib/compression/message_compress.c',
   'src/core/lib/compression/stream_compression.c',
+  'src/core/lib/compression/stream_compression_gzip.c',
+  'src/core/lib/compression/stream_compression_identity.c',
+  'src/core/lib/debug/stats.c',
+  'src/core/lib/debug/stats_data.c',
   'src/core/lib/http/format_request.c',
   'src/core/lib/http/httpcli.c',
   'src/core/lib/http/parser.c',
+  'src/core/lib/iomgr/call_combiner.c',
   'src/core/lib/iomgr/closure.c',
   'src/core/lib/iomgr/combiner.c',
   'src/core/lib/iomgr/endpoint.c',
@@ -83,8 +88,6 @@ CORE_SOURCE_FILES = [
   'src/core/lib/iomgr/endpoint_pair_windows.c',
   'src/core/lib/iomgr/error.c',
   'src/core/lib/iomgr/ev_epoll1_linux.c',
-  'src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c',
-  'src/core/lib/iomgr/ev_epoll_thread_pool_linux.c',
   'src/core/lib/iomgr/ev_epollex_linux.c',
   'src/core/lib/iomgr/ev_epollsig_linux.c',
   'src/core/lib/iomgr/ev_poll_posix.c',
@@ -297,8 +300,8 @@ CORE_SOURCE_FILES = [
   'src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c',
   'src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.c',
   'src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.c',
-  'src/core/ext/filters/load_reporting/load_reporting.c',
-  'src/core/ext/filters/load_reporting/load_reporting_filter.c',
+  'src/core/ext/filters/load_reporting/server_load_reporting_filter.c',
+  'src/core/ext/filters/load_reporting/server_load_reporting_plugin.c',
   'src/core/ext/census/base_resources.c',
   'src/core/ext/census/context.c',
   'src/core/ext/census/gen/census.pb.c',
diff --git a/src/python/grpcio_health_checking/setup.py b/src/python/grpcio_health_checking/setup.py
index 0299b4cca9..1f5e9c5130 100644
--- a/src/python/grpcio_health_checking/setup.py
+++ b/src/python/grpcio_health_checking/setup.py
@@ -34,7 +34,7 @@ CLASSIFIERS = [
     'Programming Language :: Python :: 3.5',
     'Programming Language :: Python :: 3.6',
     'License :: OSI Approved :: Apache Software License',
-],
+]
 
 PACKAGE_DIRECTORIES = {
     '': '.',
diff --git a/src/python/grpcio_reflection/setup.py b/src/python/grpcio_reflection/setup.py
index bed2311b59..9360550afb 100644
--- a/src/python/grpcio_reflection/setup.py
+++ b/src/python/grpcio_reflection/setup.py
@@ -35,7 +35,7 @@ CLASSIFIERS = [
     'Programming Language :: Python :: 3.5',
     'Programming Language :: Python :: 3.6',
     'License :: OSI Approved :: Apache Software License',
-],
+]
 
 PACKAGE_DIRECTORIES = {
     '': '.',
diff --git a/src/python/grpcio_testing/grpc_testing/__init__.py b/src/python/grpcio_testing/grpc_testing/__init__.py
index 14e25f09e2..994274500c 100644
--- a/src/python/grpcio_testing/grpc_testing/__init__.py
+++ b/src/python/grpcio_testing/grpc_testing/__init__.py
@@ -213,7 +213,7 @@ class StreamStreamChannelRpc(six.with_metaclass(abc.ABCMeta)):
         raise NotImplementedError()
 
 
-class Channel(six.with_metaclass(abc.ABCMeta), grpc.Channel):
+class Channel(six.with_metaclass(abc.ABCMeta, grpc.Channel)):
     """A grpc.Channel double with which to test a system that invokes RPCs."""
 
     @abc.abstractmethod
@@ -293,6 +293,278 @@ class Channel(six.with_metaclass(abc.ABCMeta), grpc.Channel):
         raise NotImplementedError()
 
 
+class UnaryUnaryServerRpc(six.with_metaclass(abc.ABCMeta)):
+    """Fixture for a unary-unary RPC serviced by a system under test.
+
+    Enables users to "play client" for the RPC.
+    """
+
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata emitted by the system under test.
+
+        This method blocks until the system under test has added initial
+        metadata to the RPC (or has provided one or more response messages or
+        has terminated the RPC, either of which will cause gRPC Python to
+        synthesize initial metadata for the RPC).
+
+        Returns:
+          The initial metadata for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def termination(self):
+        """Blocks until the system under test has terminated the RPC.
+
+        Returns:
+          A (response, trailing_metadata, code, details) sequence with the RPC's
+            response, trailing metadata, code, and details.
+        """
+        raise NotImplementedError()
+
+
+class UnaryStreamServerRpc(six.with_metaclass(abc.ABCMeta)):
+    """Fixture for a unary-stream RPC serviced by a system under test.
+
+    Enables users to "play client" for the RPC.
+    """
+
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata emitted by the system under test.
+
+        This method blocks until the system under test has added initial
+        metadata to the RPC (or has provided one or more response messages or
+        has terminated the RPC, either of which will cause gRPC Python to
+        synthesize initial metadata for the RPC).
+
+        Returns:
+          The initial metadata for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def take_response(self):
+        """Draws one of the responses added to the RPC by the system under test.
+
+        Successive calls to this method return responses in the same order in
+        which the system under test added them to the RPC.
+
+        Returns:
+          A response message added to the RPC by the system under test.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def termination(self):
+        """Blocks until the system under test has terminated the RPC.
+
+        Returns:
+          A (trailing_metadata, code, details) sequence with the RPC's trailing
+            metadata, code, and details.
+        """
+        raise NotImplementedError()
+
+
+class StreamUnaryServerRpc(six.with_metaclass(abc.ABCMeta)):
+    """Fixture for a stream-unary RPC serviced by a system under test.
+
+    Enables users to "play client" for the RPC.
+    """
+
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata emitted by the system under test.
+
+        This method blocks until the system under test has added initial
+        metadata to the RPC (or has provided one or more response messages or
+        has terminated the RPC, either of which will cause gRPC Python to
+        synthesize initial metadata for the RPC).
+
+        Returns:
+          The initial metadata for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def send_request(self, request):
+        """Sends a request to the system under test.
+
+        Args:
+          request: A request message for the RPC to be "sent" to the system
+            under test.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def requests_closed(self):
+        """Indicates the end of the RPC's request stream."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def termination(self):
+        """Blocks until the system under test has terminated the RPC.
+
+        Returns:
+          A (response, trailing_metadata, code, details) sequence with the RPC's
+            response, trailing metadata, code, and details.
+        """
+        raise NotImplementedError()
+
+
+class StreamStreamServerRpc(six.with_metaclass(abc.ABCMeta)):
+    """Fixture for a stream-stream RPC serviced by a system under test.
+
+    Enables users to "play client" for the RPC.
+    """
+
+    @abc.abstractmethod
+    def initial_metadata(self):
+        """Accesses the initial metadata emitted by the system under test.
+
+        This method blocks until the system under test has added initial
+        metadata to the RPC (or has provided one or more response messages or
+        has terminated the RPC, either of which will cause gRPC Python to
+        synthesize initial metadata for the RPC).
+
+        Returns:
+          The initial metadata for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def send_request(self, request):
+        """Sends a request to the system under test.
+
+        Args:
+          request: A request message for the RPC to be "sent" to the system
+            under test.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def requests_closed(self):
+        """Indicates the end of the RPC's request stream."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def take_response(self):
+        """Draws one of the responses added to the RPC by the system under test.
+
+        Successive calls to this method return responses in the same order in
+        which the system under test added them to the RPC.
+
+        Returns:
+          A response message added to the RPC by the system under test.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def cancel(self):
+        """Cancels the RPC."""
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def termination(self):
+        """Blocks until the system under test has terminated the RPC.
+
+        Returns:
+          A (trailing_metadata, code, details) sequence with the RPC's trailing
+            metadata, code, and details.
+        """
+        raise NotImplementedError()
+
+
+class Server(six.with_metaclass(abc.ABCMeta)):
+    """A server with which to test a system that services RPCs."""
+
+    @abc.abstractmethod
+    def invoke_unary_unary(
+            self, method_descriptor, invocation_metadata, request, timeout):
+        """Invokes an RPC to be serviced by the system under test.
+
+        Args:
+          method_descriptor: A descriptor.MethodDescriptor describing a unary-unary
+            RPC method.
+          invocation_metadata: The RPC's invocation metadata.
+          request: The RPC's request.
+          timeout: A duration of time in seconds for the RPC or None to
+            indicate that the RPC has no time limit.
+
+        Returns:
+          A UnaryUnaryServerRpc with which to "play client" for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_unary_stream(
+            self, method_descriptor, invocation_metadata, request, timeout):
+        """Invokes an RPC to be serviced by the system under test.
+
+        Args:
+          method_descriptor: A descriptor.MethodDescriptor describing a unary-stream
+            RPC method.
+          invocation_metadata: The RPC's invocation metadata.
+          request: The RPC's request.
+          timeout: A duration of time in seconds for the RPC or None to
+            indicate that the RPC has no time limit.
+
+        Returns:
+          A UnaryStreamServerRpc with which to "play client" for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_stream_unary(
+            self, method_descriptor, invocation_metadata, timeout):
+        """Invokes an RPC to be serviced by the system under test.
+
+        Args:
+          method_descriptor: A descriptor.MethodDescriptor describing a stream-unary
+            RPC method.
+          invocation_metadata: The RPC's invocation metadata.
+          timeout: A duration of time in seconds for the RPC or None to
+            indicate that the RPC has no time limit.
+
+        Returns:
+          A StreamUnaryServerRpc with which to "play client" for the RPC.
+        """
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_stream_stream(
+            self, method_descriptor, invocation_metadata, timeout):
+        """Invokes an RPC to be serviced by the system under test.
+
+        Args:
+          method_descriptor: A descriptor.MethodDescriptor describing a stream-stream
+            RPC method.
+          invocation_metadata: The RPC's invocation metadata.
+          timeout: A duration of time in seconds for the RPC or None to
+            indicate that the RPC has no time limit.
+
+        Returns:
+          A StreamStreamServerRpc with which to "play client" for the RPC.
+        """
+        raise NotImplementedError()
+
+
 class Time(six.with_metaclass(abc.ABCMeta)):
     """A simulation of time.
 
@@ -406,3 +678,20 @@ def channel(service_descriptors, time):
     """
     from grpc_testing import _channel
     return _channel.testing_channel(service_descriptors, time)
+
+
+def server_from_dictionary(descriptors_to_servicers, time):
+    """Creates a Server for use in tests of a gRPC Python-using system.
+
+    Args:
+      descriptors_to_servicers: A dictionary from descriptor.ServiceDescriptors
+        defining RPC services to servicer objects (usually instances of classes
+        that implement "Servicer" interfaces defined in generated "_pb2_grpc"
+        modules) implementing those services.
+      time: A Time to be used for tests.
+
+    Returns:
+      A Server for use in tests.
+    """
+    from grpc_testing import _server
+    return _server.server_from_dictionary(descriptors_to_servicers, time)
diff --git a/src/python/grpcio_testing/grpc_testing/_common.py b/src/python/grpcio_testing/grpc_testing/_common.py
index cb4a7f5fa2..1517434ca7 100644
--- a/src/python/grpcio_testing/grpc_testing/_common.py
+++ b/src/python/grpcio_testing/grpc_testing/_common.py
@@ -37,6 +37,16 @@ def fuss_with_metadata(metadata):
         return _fuss(tuple(metadata))
 
 
+def rpc_names(service_descriptors):
+    rpc_names_to_descriptors = {}
+    for service_descriptor in service_descriptors:
+        for method_descriptor in service_descriptor.methods_by_name.values():
+            rpc_name = '/{}/{}'.format(
+                service_descriptor.full_name, method_descriptor.name)
+            rpc_names_to_descriptors[rpc_name] = method_descriptor
+    return rpc_names_to_descriptors
+
+
 class ChannelRpcRead(
         collections.namedtuple(
             'ChannelRpcRead',
@@ -90,3 +100,61 @@ class ChannelHandler(six.with_metaclass(abc.ABCMeta)):
             self, method_full_rpc_name, invocation_metadata, requests,
             requests_closed, timeout):
         raise NotImplementedError()
+
+
+class ServerRpcRead(
+        collections.namedtuple('ServerRpcRead',
+                               ('request', 'requests_closed', 'terminated',))):
+    pass
+
+
+REQUESTS_CLOSED = ServerRpcRead(None, True, False)
+TERMINATED = ServerRpcRead(None, False, True)
+
+
+class ServerRpcHandler(six.with_metaclass(abc.ABCMeta)):
+
+    @abc.abstractmethod
+    def send_initial_metadata(self, initial_metadata):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def take_request(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def add_response(self, response):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def send_termination(self, trailing_metadata, code, details):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def add_termination_callback(self, callback):
+        raise NotImplementedError()
+
+
+class Serverish(six.with_metaclass(abc.ABCMeta)):
+
+    @abc.abstractmethod
+    def invoke_unary_unary(
+            self, method_descriptor, handler, invocation_metadata, request,
+            deadline):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_unary_stream(
+            self, method_descriptor, handler, invocation_metadata, request,
+            deadline):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_stream_unary(
+            self, method_descriptor, handler, invocation_metadata, deadline):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def invoke_stream_stream(
+            self, method_descriptor, handler, invocation_metadata, deadline):
+        raise NotImplementedError()
diff --git a/src/python/grpcio_tests/tests/unit/_sanity/__init__.py b/src/python/grpcio_testing/grpc_testing/_server/__init__.py
index 5772620b60..759512949a 100644
--- a/src/python/grpcio_tests/tests/unit/_sanity/__init__.py
+++ b/src/python/grpcio_testing/grpc_testing/_server/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2016 gRPC authors.
+# Copyright 2017 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -11,3 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+from grpc_testing._server import _server
+
+
+def server_from_dictionary(descriptors_to_servicers, time):
+    return _server.server_from_descriptor_to_servicers(
+        descriptors_to_servicers, time)
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_handler.py b/src/python/grpcio_testing/grpc_testing/_server/_handler.py
new file mode 100644
index 0000000000..b47e04c718
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_handler.py
@@ -0,0 +1,215 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import abc
+import threading
+
+import grpc
+from grpc_testing import _common
+
+_CLIENT_INACTIVE = object()
+
+
+class Handler(_common.ServerRpcHandler):
+
+    @abc.abstractmethod
+    def initial_metadata(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def add_request(self, request):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def take_response(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def requests_closed(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def cancel(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def unary_response_termination(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def stream_response_termination(self):
+        raise NotImplementedError()
+
+
+class _Handler(Handler):
+
+    def __init__(self, requests_closed):
+        self._condition = threading.Condition()
+        self._requests = []
+        self._requests_closed = requests_closed
+        self._initial_metadata = None
+        self._responses = []
+        self._trailing_metadata = None
+        self._code = None
+        self._details = None
+        self._unary_response = None
+        self._expiration_future = None
+        self._termination_callbacks = []
+
+    def send_initial_metadata(self, initial_metadata):
+        with self._condition:
+            self._initial_metadata = initial_metadata
+            self._condition.notify_all()
+
+    def take_request(self):
+        with self._condition:
+            while True:
+                if self._code is None:
+                    if self._requests:
+                        request = self._requests.pop(0)
+                        self._condition.notify_all()
+                        return _common.ServerRpcRead(request, False, False)
+                    elif self._requests_closed:
+                        return _common.REQUESTS_CLOSED
+                    else:
+                        self._condition.wait()
+                else:
+                    return _common.TERMINATED
+
+    def is_active(self):
+        with self._condition:
+            return self._code is None
+
+    def add_response(self, response):
+        with self._condition:
+            self._responses.append(response)
+            self._condition.notify_all()
+
+    def send_termination(self, trailing_metadata, code, details):
+        with self._condition:
+            self._trailing_metadata = trailing_metadata
+            self._code = code
+            self._details = details
+            if self._expiration_future is not None:
+                self._expiration_future.cancel()
+            self._condition.notify_all()
+
+    def add_termination_callback(self, termination_callback):
+        with self._condition:
+            if self._code is None:
+                self._termination_callbacks.append(termination_callback)
+                return True
+            else:
+                return False
+
+    def initial_metadata(self):
+        with self._condition:
+            while True:
+                if self._initial_metadata is None:
+                    if self._code is None:
+                        self._condition.wait()
+                    else:
+                        raise ValueError(
+                            'No initial metadata despite status code!')
+                else:
+                    return self._initial_metadata
+
+    def add_request(self, request):
+        with self._condition:
+            self._requests.append(request)
+            self._condition.notify_all()
+
+    def take_response(self):
+        with self._condition:
+            while True:
+                if self._responses:
+                    response = self._responses.pop(0)
+                    self._condition.notify_all()
+                    return response
+                elif self._code is None:
+                    self._condition.wait()
+                else:
+                    raise ValueError('No more responses!')
+
+    def requests_closed(self):
+        with self._condition:
+            self._requests_closed = True
+            self._condition.notify_all()
+
+    def cancel(self):
+        with self._condition:
+            if self._code is None:
+                self._code = _CLIENT_INACTIVE
+                termination_callbacks = self._termination_callbacks
+                self._termination_callbacks = None
+                if self._expiration_future is not None:
+                    self._expiration_future.cancel()
+                self._condition.notify_all()
+        for termination_callback in termination_callbacks:
+            termination_callback()
+
+    def unary_response_termination(self):
+        with self._condition:
+            while True:
+                if self._code is _CLIENT_INACTIVE:
+                    raise ValueError('Huh? Cancelled but wanting status?')
+                elif self._code is None:
+                    self._condition.wait()
+                else:
+                    if self._unary_response is None:
+                        if self._responses:
+                            self._unary_response = self._responses.pop(0)
+                    return (
+                        self._unary_response, self._trailing_metadata,
+                        self._code, self._details,)
+
+
+    def stream_response_termination(self):
+        with self._condition:
+            while True:
+                if self._code is _CLIENT_INACTIVE:
+                    raise ValueError('Huh? Cancelled but wanting status?')
+                elif self._code is None:
+                    self._condition.wait()
+                else:
+                    return self._trailing_metadata, self._code, self._details,
+
+    def expire(self):
+        with self._condition:
+            if self._code is None:
+                if self._initial_metadata is None:
+                    self._initial_metadata = _common.FUSSED_EMPTY_METADATA
+                self._trailing_metadata = _common.FUSSED_EMPTY_METADATA
+                self._code = grpc.StatusCode.DEADLINE_EXCEEDED
+                self._details = 'Took too much time!'
+                termination_callbacks = self._termination_callbacks
+                self._termination_callbacks = None
+                self._condition.notify_all()
+        for termination_callback in termination_callbacks:
+            termination_callback()
+
+    def set_expiration_future(self, expiration_future):
+        with self._condition:
+            self._expiration_future = expiration_future
+
+
+def handler_without_deadline(requests_closed):
+    return _Handler(requests_closed)
+
+
+def handler_with_deadline(requests_closed, time, deadline):
+    handler = _Handler(requests_closed)
+    expiration_future = time.call_at(handler.expire, deadline)
+    handler.set_expiration_future(expiration_future)
+    return handler
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_rpc.py b/src/python/grpcio_testing/grpc_testing/_server/_rpc.py
new file mode 100644
index 0000000000..f81876f4b2
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_rpc.py
@@ -0,0 +1,153 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+import threading
+
+import grpc
+from grpc_testing import _common
+
+
+class Rpc(object):
+
+    def __init__(self, handler, invocation_metadata):
+        self._condition = threading.Condition()
+        self._handler = handler
+        self._invocation_metadata = invocation_metadata
+        self._initial_metadata_sent = False
+        self._pending_trailing_metadata = None
+        self._pending_code = None
+        self._pending_details = None
+        self._callbacks = []
+        self._active = True
+        self._rpc_errors = []
+
+    def _ensure_initial_metadata_sent(self):
+        if not self._initial_metadata_sent:
+            self._handler.send_initial_metadata(_common.FUSSED_EMPTY_METADATA)
+            self._initial_metadata_sent = True
+
+    def _call_back(self):
+        callbacks = tuple(self._callbacks)
+        self._callbacks = None
+
+        def call_back():
+            for callback in callbacks:
+                try:
+                    callback()
+                except Exception:  # pylint: disable=broad-except
+                    logging.exception('Exception calling server-side callback!')
+
+        callback_calling_thread = threading.Thread(target=call_back)
+        callback_calling_thread.start()
+
+    def _terminate(self, trailing_metadata, code, details):
+        if self._active:
+            self._active = False
+            self._handler.send_termination(trailing_metadata, code, details)
+            self._call_back()
+            self._condition.notify_all()
+
+    def _complete(self):
+        if self._pending_trailing_metadata is None:
+            trailing_metadata = _common.FUSSED_EMPTY_METADATA
+        else:
+            trailing_metadata = self._pending_trailing_metadata
+        if self._pending_code is None:
+            code = grpc.StatusCode.OK
+        else:
+            code = self._pending_code
+        details = '' if self._pending_details is None else self._pending_details
+        self._terminate(trailing_metadata, code, details)
+
+    def _abort(self, code, details):
+        self._terminate(_common.FUSSED_EMPTY_METADATA, code, details)
+
+    def add_rpc_error(self, rpc_error):
+        with self._condition:
+            self._rpc_errors.append(rpc_error)
+
+    def application_cancel(self):
+        with self._condition:
+            self._abort(
+                grpc.StatusCode.CANCELLED,
+                'Cancelled by server-side application!')
+
+    def application_exception_abort(self, exception):
+        with self._condition:
+            if exception not in self._rpc_errors:
+                logging.exception('Exception calling application!')
+                self._abort(
+                    grpc.StatusCode.UNKNOWN,
+                    'Exception calling application: {}'.format(exception))
+
+    def extrinsic_abort(self):
+        with self._condition:
+            if self._active:
+                self._active = False
+                self._call_back()
+                self._condition.notify_all()
+
+    def unary_response_complete(self, response):
+        with self._condition:
+            self._ensure_initial_metadata_sent()
+            self._handler.add_response(response)
+            self._complete()
+
+    def stream_response(self, response):
+        with self._condition:
+            self._ensure_initial_metadata_sent()
+            self._handler.add_response(response)
+
+    def stream_response_complete(self):
+        with self._condition:
+            self._ensure_initial_metadata_sent()
+            self._complete()
+
+    def send_initial_metadata(self, initial_metadata):
+        with self._condition:
+            if self._initial_metadata_sent:
+                return False
+            else:
+                self._handler.send_initial_metadata(initial_metadata)
+                self._initial_metadata_sent = True
+                return True
+
+    def is_active(self):
+        with self._condition:
+            return self._active
+
+    def add_callback(self, callback):
+        with self._condition:
+            if self._callbacks is None:
+                return False
+            else:
+                self._callbacks.append(callback)
+                return True
+
+    def invocation_metadata(self):
+        with self._condition:
+            return self._invocation_metadata
+
+    def set_trailing_metadata(self, trailing_metadata):
+        with self._condition:
+            self._pending_trailing_metadata = trailing_metadata
+
+    def set_code(self, code):
+        with self._condition:
+            self._pending_code = code
+
+    def set_details(self, details):
+        with self._condition:
+            self._pending_details = details
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_server.py b/src/python/grpcio_testing/grpc_testing/_server/_server.py
new file mode 100644
index 0000000000..66bcfc13c0
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_server.py
@@ -0,0 +1,149 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import threading
+
+import grpc_testing
+from grpc_testing import _common
+from grpc_testing._server import _handler
+from grpc_testing._server import _rpc
+from grpc_testing._server import _server_rpc
+from grpc_testing._server import _service
+from grpc_testing._server import _servicer_context
+
+
+def _implementation(descriptors_to_servicers, method_descriptor):
+    servicer = descriptors_to_servicers[method_descriptor.containing_service]
+    return getattr(servicer, method_descriptor.name)
+
+
+def _unary_unary_service(request):
+    def service(implementation, rpc, servicer_context):
+        _service.unary_unary(
+            implementation, rpc, request, servicer_context)
+    return service
+
+
+def _unary_stream_service(request):
+    def service(implementation, rpc, servicer_context):
+        _service.unary_stream(
+            implementation, rpc, request, servicer_context)
+    return service
+
+
+def _stream_unary_service(handler):
+    def service(implementation, rpc, servicer_context):
+        _service.stream_unary(implementation, rpc, handler, servicer_context)
+    return service
+
+
+def _stream_stream_service(handler):
+    def service(implementation, rpc, servicer_context):
+        _service.stream_stream(implementation, rpc, handler, servicer_context)
+    return service
+
+
+class _Serverish(_common.Serverish):
+
+    def __init__(self, descriptors_to_servicers, time):
+        self._descriptors_to_servicers = descriptors_to_servicers
+        self._time = time
+
+    def _invoke(
+            self, service_behavior, method_descriptor, handler,
+            invocation_metadata, deadline):
+        implementation = _implementation(
+            self._descriptors_to_servicers, method_descriptor)
+        rpc = _rpc.Rpc(handler, invocation_metadata)
+        if handler.add_termination_callback(rpc.extrinsic_abort):
+            servicer_context = _servicer_context.ServicerContext(
+                rpc, self._time, deadline)
+            service_thread = threading.Thread(
+                target=service_behavior,
+                args=(implementation, rpc, servicer_context,))
+            service_thread.start()
+
+    def invoke_unary_unary(
+            self, method_descriptor, handler, invocation_metadata, request,
+            deadline):
+        self._invoke(
+            _unary_unary_service(request), method_descriptor, handler,
+            invocation_metadata, deadline)
+
+    def invoke_unary_stream(
+            self, method_descriptor, handler, invocation_metadata, request,
+            deadline):
+        self._invoke(
+            _unary_stream_service(request), method_descriptor, handler,
+            invocation_metadata, deadline)
+
+    def invoke_stream_unary(
+            self, method_descriptor, handler, invocation_metadata, deadline):
+        self._invoke(
+            _stream_unary_service(handler), method_descriptor, handler,
+            invocation_metadata, deadline)
+
+    def invoke_stream_stream(
+            self, method_descriptor, handler, invocation_metadata, deadline):
+        self._invoke(
+            _stream_stream_service(handler), method_descriptor, handler,
+            invocation_metadata, deadline)
+
+
+def _deadline_and_handler(requests_closed, time, timeout):
+    if timeout is None:
+        return None, _handler.handler_without_deadline(requests_closed)
+    else:
+        deadline = time.time() + timeout
+        handler = _handler.handler_with_deadline(requests_closed, time, deadline)
+        return deadline, handler
+
+
+class _Server(grpc_testing.Server):
+
+    def __init__(self, serverish, time):
+        self._serverish = serverish
+        self._time = time
+
+    def invoke_unary_unary(
+            self, method_descriptor, invocation_metadata, request, timeout):
+        deadline, handler = _deadline_and_handler(True, self._time, timeout)
+        self._serverish.invoke_unary_unary(
+            method_descriptor, handler, invocation_metadata, request, deadline)
+        return _server_rpc.UnaryUnaryServerRpc(handler)
+
+    def invoke_unary_stream(
+            self, method_descriptor, invocation_metadata, request, timeout):
+        deadline, handler = _deadline_and_handler(True, self._time, timeout)
+        self._serverish.invoke_unary_stream(
+            method_descriptor, handler, invocation_metadata, request, deadline)
+        return _server_rpc.UnaryStreamServerRpc(handler)
+
+    def invoke_stream_unary(
+            self, method_descriptor, invocation_metadata, timeout):
+        deadline, handler = _deadline_and_handler(False, self._time, timeout)
+        self._serverish.invoke_stream_unary(
+            method_descriptor, handler, invocation_metadata, deadline)
+        return _server_rpc.StreamUnaryServerRpc(handler)
+
+    def invoke_stream_stream(
+            self, method_descriptor, invocation_metadata, timeout):
+        deadline, handler = _deadline_and_handler(False, self._time, timeout)
+        self._serverish.invoke_stream_stream(
+            method_descriptor, handler, invocation_metadata, deadline)
+        return _server_rpc.StreamStreamServerRpc(handler)
+
+
+def server_from_descriptor_to_servicers(descriptors_to_servicers, time):
+    return _Server(_Serverish(descriptors_to_servicers, time), time)
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_server_rpc.py b/src/python/grpcio_testing/grpc_testing/_server/_server_rpc.py
new file mode 100644
index 0000000000..30de8ff0e2
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_server_rpc.py
@@ -0,0 +1,93 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import grpc_testing
+
+
+class UnaryUnaryServerRpc(grpc_testing.UnaryUnaryServerRpc):
+
+    def __init__(self, handler):
+        self._handler = handler
+
+    def initial_metadata(self):
+        return self._handler.initial_metadata()
+
+    def cancel(self):
+        self._handler.cancel()
+
+    def termination(self):
+        return self._handler.unary_response_termination()
+
+
+class UnaryStreamServerRpc(grpc_testing.UnaryStreamServerRpc):
+
+    def __init__(self, handler):
+        self._handler = handler
+
+    def initial_metadata(self):
+        return self._handler.initial_metadata()
+
+    def take_response(self):
+        return self._handler.take_response()
+
+    def cancel(self):
+        self._handler.cancel()
+
+    def termination(self):
+        return self._handler.stream_response_termination()
+
+
+class StreamUnaryServerRpc(grpc_testing.StreamUnaryServerRpc):
+
+    def __init__(self, handler):
+        self._handler = handler
+
+    def initial_metadata(self):
+        return self._handler.initial_metadata()
+
+    def send_request(self, request):
+        self._handler.add_request(request)
+
+    def requests_closed(self):
+        self._handler.requests_closed()
+
+    def cancel(self):
+        self._handler.cancel()
+
+    def termination(self):
+        return self._handler.unary_response_termination()
+
+
+class StreamStreamServerRpc(grpc_testing.StreamStreamServerRpc):
+
+    def __init__(self, handler):
+        self._handler = handler
+
+    def initial_metadata(self):
+        return self._handler.initial_metadata()
+
+    def send_request(self, request):
+        self._handler.add_request(request)
+
+    def requests_closed(self):
+        self._handler.requests_closed()
+
+    def take_response(self):
+        return self._handler.take_response()
+
+    def cancel(self):
+        self._handler.cancel()
+
+    def termination(self):
+        return self._handler.stream_response_termination()
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_service.py b/src/python/grpcio_testing/grpc_testing/_server/_service.py
new file mode 100644
index 0000000000..36b0a2f7ff
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_service.py
@@ -0,0 +1,88 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import grpc
+
+
+class _RequestIterator(object):
+
+    def __init__(self, rpc, handler):
+        self._rpc = rpc
+        self._handler = handler
+
+    def _next(self):
+        read = self._handler.take_request()
+        if read.requests_closed:
+            raise StopIteration()
+        elif read.terminated:
+            rpc_error = grpc.RpcError()
+            self._rpc.add_rpc_error(rpc_error)
+            raise rpc_error
+        else:
+            return read.request
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        return self._next()
+
+    def next(self):
+        return self._next()
+
+
+def _unary_response(argument, implementation, rpc, servicer_context):
+    try:
+        response = implementation(argument, servicer_context)
+    except Exception as exception:  # pylint: disable=broad-except
+        rpc.application_exception_abort(exception)
+    else:
+        rpc.unary_response_complete(response)
+
+
+def _stream_response(argument, implementation, rpc, servicer_context):
+    try:
+        response_iterator = implementation(argument, servicer_context)
+    except Exception as exception:  # pylint: disable=broad-except
+        rpc.application_exception_abort(exception)
+    else:
+        while True:
+            try:
+                response = next(response_iterator)
+            except StopIteration:
+                rpc.stream_response_complete()
+                break
+            except Exception as exception:  # pylint: disable=broad-except
+                rpc.application_exception_abort(exception)
+                break
+            else:
+                rpc.stream_response(response)
+
+
+def unary_unary(implementation, rpc, request, servicer_context):
+    _unary_response(request, implementation, rpc, servicer_context)
+
+
+def unary_stream(implementation, rpc, request, servicer_context):
+    _stream_response(request, implementation, rpc, servicer_context)
+
+
+def stream_unary(implementation, rpc, handler, servicer_context):
+    _unary_response(
+        _RequestIterator(rpc, handler), implementation, rpc, servicer_context)
+
+
+def stream_stream(implementation, rpc, handler, servicer_context):
+    _stream_response(
+        _RequestIterator(rpc, handler), implementation, rpc, servicer_context)
diff --git a/src/python/grpcio_testing/grpc_testing/_server/_servicer_context.py b/src/python/grpcio_testing/grpc_testing/_server/_servicer_context.py
new file mode 100644
index 0000000000..496689ded0
--- /dev/null
+++ b/src/python/grpcio_testing/grpc_testing/_server/_servicer_context.py
@@ -0,0 +1,74 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import grpc
+from grpc_testing import _common
+
+
+class ServicerContext(grpc.ServicerContext):
+
+    def __init__(self, rpc, time, deadline):
+        self._rpc = rpc
+        self._time = time
+        self._deadline = deadline
+
+    def is_active(self):
+        return self._rpc.is_active()
+
+    def time_remaining(self):
+        if self._rpc.is_active():
+            if self._deadline is None:
+                return None
+            else:
+                return max(0.0, self._deadline - self._time.time())
+        else:
+            return 0.0
+
+    def cancel(self):
+        self._rpc.application_cancel()
+
+    def add_callback(self, callback):
+        return self._rpc.add_callback(callback)
+
+    def invocation_metadata(self):
+        return self._rpc.invocation_metadata()
+
+    def peer(self):
+        raise NotImplementedError()
+
+    def peer_identities(self):
+        raise NotImplementedError()
+
+    def peer_identity_key(self):
+        raise NotImplementedError()
+
+    def auth_context(self):
+        raise NotImplementedError()
+
+    def send_initial_metadata(self, initial_metadata):
+        initial_metadata_sent = self._rpc.send_initial_metadata(
+            _common.fuss_with_metadata(initial_metadata))
+        if not initial_metadata_sent:
+            raise ValueError(
+                'ServicerContext.send_initial_metadata called too late!')
+
+    def set_trailing_metadata(self, trailing_metadata):
+        self._rpc.set_trailing_metadata(
+            _common.fuss_with_metadata(trailing_metadata))
+
+    def set_code(self, code):
+        self._rpc.set_code(code)
+
+    def set_details(self, details):
+        self._rpc.set_details(details)
diff --git a/src/python/grpcio_testing/grpc_version.py b/src/python/grpcio_testing/grpc_version.py
index 41a75d46f6..592d08efc3 100644
--- a/src/python/grpcio_testing/grpc_version.py
+++ b/src/python/grpcio_testing/grpc_version.py
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_reflection/grpc_version.py.template`!!!
+# AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_testing/grpc_version.py.template`!!!
 
-VERSION = '1.5.0.dev0'
+VERSION='1.7.0.dev0'
diff --git a/src/python/grpcio_tests/commands.py b/src/python/grpcio_tests/commands.py
index 162200112a..93f84572b7 100644
--- a/src/python/grpcio_tests/commands.py
+++ b/src/python/grpcio_tests/commands.py
@@ -67,55 +67,6 @@ class GatherProto(setuptools.Command):
             open(path, 'a').close()
 
 
-class BuildProtoModules(setuptools.Command):
-    """Command to generate project *_pb2.py modules from proto files."""
-
-    description = 'build protobuf modules'
-    user_options = [
-        ('include=', None, 'path patterns to include in protobuf generation'),
-        ('exclude=', None, 'path patterns to exclude from protobuf generation')
-    ]
-
-    def initialize_options(self):
-        self.exclude = None
-        self.include = r'.*\.proto$'
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        import grpc_tools.protoc as protoc
-
-        include_regex = re.compile(self.include)
-        exclude_regex = re.compile(self.exclude) if self.exclude else None
-        paths = []
-        for walk_root, directories, filenames in os.walk(PROTO_STEM):
-            for filename in filenames:
-                path = os.path.join(walk_root, filename)
-                if include_regex.match(path) and not (
-                        exclude_regex and exclude_regex.match(path)):
-                    paths.append(path)
-
-        # TODO(kpayson): It would be nice to do this in a batch command,
-        # but we currently have name conflicts in src/proto
-        for path in paths:
-            command = [
-                'grpc_tools.protoc',
-                '-I {}'.format(PROTO_STEM),
-                '--python_out={}'.format(PROTO_STEM),
-                '--grpc_python_out={}'.format(PROTO_STEM),
-            ] + [path]
-            if protoc.main(command) != 0:
-                sys.stderr.write(
-                    'warning: Command:\n{}\nFailed'.format(command))
-
-        # Generated proto directories dont include __init__.py, but
-        # these are needed for python package resolution
-        for walk_root, _, _ in os.walk(PROTO_STEM):
-            path = os.path.join(walk_root, '__init__.py')
-            open(path, 'a').close()
-
-
 class BuildPy(build_py.build_py):
     """Custom project build command."""
 
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py b/src/python/grpcio_tests/tests/_sanity/__init__.py
index 5772620b60..5772620b60 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/__init__.py
+++ b/src/python/grpcio_tests/tests/_sanity/__init__.py
diff --git a/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py b/src/python/grpcio_tests/tests/_sanity/_sanity_test.py
index 19bc8801eb..b4079850ff 100644
--- a/src/python/grpcio_tests/tests/unit/_sanity/_sanity_test.py
+++ b/src/python/grpcio_tests/tests/_sanity/_sanity_test.py
@@ -21,24 +21,25 @@ import six
 import tests
 
 
-class Sanity(unittest.TestCase):
+class SanityTest(unittest.TestCase):
+
+    maxDiff = 32768
 
     def testTestsJsonUpToDate(self):
         """Autodiscovers all test suites and checks that tests.json is up to date"""
         loader = tests.Loader()
         loader.loadTestsFromNames(['tests'])
-        test_suite_names = [
+        test_suite_names = sorted({
             test_case_class.id().rsplit('.', 1)[0]
             for test_case_class in tests._loader.iterate_suite_cases(
                 loader.suite)
-        ]
-        test_suite_names = sorted(set(test_suite_names))
+        })
 
         tests_json_string = pkg_resources.resource_string('tests', 'tests.json')
-        if six.PY3:
-            tests_json_string = tests_json_string.decode()
-        tests_json = json.loads(tests_json_string)
-        self.assertListEqual(test_suite_names, tests_json)
+        tests_json = json.loads(tests_json_string.decode()
+                                if six.PY3 else tests_json_string)
+
+        self.assertSequenceEqual(tests_json, test_suite_names)
 
 
 if __name__ == '__main__':
diff --git a/src/python/grpcio_tests/tests/http2/negative_http2_client.py b/src/python/grpcio_tests/tests/http2/negative_http2_client.py
index 6d8a6bce77..8dab5b67f1 100644
--- a/src/python/grpcio_tests/tests/http2/negative_http2_client.py
+++ b/src/python/grpcio_tests/tests/http2/negative_http2_client.py
@@ -17,7 +17,7 @@ import argparse
 
 import grpc
 import time
-from src.proto.grpc.testing import test_pb2
+from src.proto.grpc.testing import test_pb2_grpc
 from src.proto.grpc.testing import messages_pb2
 
 
@@ -147,7 +147,7 @@ def _stub(server_host, server_port):
     target = '{}:{}'.format(server_host, server_port)
     channel = grpc.insecure_channel(target)
     grpc.channel_ready_future(channel).result()
-    return test_pb2.TestServiceStub(channel)
+    return test_pb2_grpc.TestServiceStub(channel)
 
 
 def main():
diff --git a/src/python/grpcio_tests/tests/interop/client.py b/src/python/grpcio_tests/tests/interop/client.py
index 47ae96472d..e520c08290 100644
--- a/src/python/grpcio_tests/tests/interop/client.py
+++ b/src/python/grpcio_tests/tests/interop/client.py
@@ -19,7 +19,7 @@ import os
 from google import auth as google_auth
 from google.auth import jwt as google_auth_jwt
 import grpc
-from src.proto.grpc.testing import test_pb2
+from src.proto.grpc.testing import test_pb2_grpc
 
 from tests.interop import methods
 from tests.interop import resources
@@ -106,9 +106,9 @@ def _stub(args):
     else:
         channel = grpc.insecure_channel(target)
     if args.test_case == "unimplemented_service":
-        return test_pb2.UnimplementedServiceStub(channel)
+        return test_pb2_grpc.UnimplementedServiceStub(channel)
     else:
-        return test_pb2.TestServiceStub(channel)
+        return test_pb2_grpc.TestServiceStub(channel)
 
 
 def _test_case_from_arg(test_case_arg):
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
index 71493bfec6..5b84001aab 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_python_plugin_test.py
@@ -33,7 +33,7 @@ from tests.unit.framework.common import test_constants
 import tests.protoc_plugin.protos.payload.test_payload_pb2 as payload_pb2
 import tests.protoc_plugin.protos.requests.r.test_requests_pb2 as request_pb2
 import tests.protoc_plugin.protos.responses.test_responses_pb2 as response_pb2
-import tests.protoc_plugin.protos.service.test_service_pb2 as service_pb2
+import tests.protoc_plugin.protos.service.test_service_pb2_grpc as service_pb2_grpc
 
 # Identifiers of entities we expect to find in the generated module.
 STUB_IDENTIFIER = 'TestServiceStub'
@@ -138,7 +138,7 @@ def _CreateService():
   """
     servicer_methods = _ServicerMethods()
 
-    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+    class Servicer(getattr(service_pb2_grpc, SERVICER_IDENTIFIER)):
 
         def UnaryCall(self, request, context):
             return servicer_methods.UnaryCall(request, context)
@@ -157,11 +157,12 @@ def _CreateService():
 
     server = grpc.server(
         futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-    getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
+    getattr(service_pb2_grpc, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(),
+                                                                 server)
     port = server.add_insecure_port('[::]:0')
     server.start()
     channel = grpc.insecure_channel('localhost:{}'.format(port))
-    stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
+    stub = getattr(service_pb2_grpc, STUB_IDENTIFIER)(channel)
     return _Service(servicer_methods, server, stub)
 
 
@@ -173,16 +174,17 @@ def _CreateIncompleteService():
       servicer_methods implements none of the methods required of it.
   """
 
-    class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
+    class Servicer(getattr(service_pb2_grpc, SERVICER_IDENTIFIER)):
         pass
 
     server = grpc.server(
         futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-    getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(), server)
+    getattr(service_pb2_grpc, ADD_SERVICER_TO_SERVER_IDENTIFIER)(Servicer(),
+                                                                 server)
     port = server.add_insecure_port('[::]:0')
     server.start()
     channel = grpc.insecure_channel('localhost:{}'.format(port))
-    stub = getattr(service_pb2, STUB_IDENTIFIER)(channel)
+    stub = getattr(service_pb2_grpc, STUB_IDENTIFIER)(channel)
     return _Service(None, server, stub)
 
 
@@ -223,10 +225,11 @@ class PythonPluginTest(unittest.TestCase):
 
     def testImportAttributes(self):
         # check that we can access the generated module and its members.
-        self.assertIsNotNone(getattr(service_pb2, STUB_IDENTIFIER, None))
-        self.assertIsNotNone(getattr(service_pb2, SERVICER_IDENTIFIER, None))
+        self.assertIsNotNone(getattr(service_pb2_grpc, STUB_IDENTIFIER, None))
         self.assertIsNotNone(
-            getattr(service_pb2, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
+            getattr(service_pb2_grpc, SERVICER_IDENTIFIER, None))
+        self.assertIsNotNone(
+            getattr(service_pb2_grpc, ADD_SERVICER_TO_SERVER_IDENTIFIER, None))
 
     def testUpDown(self):
         service = _CreateService()
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py b/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
index 1aeb62a7c5..7868cdbfb3 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/_split_definitions_test.py
@@ -12,22 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import collections
+import abc
 from concurrent import futures
 import contextlib
-import distutils.spawn
-import errno
 import importlib
 import os
-import os.path
+from os import path
 import pkgutil
+import platform
 import shutil
-import subprocess
 import sys
 import tempfile
-import threading
 import unittest
-import platform
+
+import six
 
 import grpc
 from grpc_tools import protoc
@@ -37,292 +35,285 @@ _MESSAGES_IMPORT = b'import "messages.proto";'
 _SPLIT_NAMESPACE = b'package grpc_protoc_plugin.invocation_testing.split;'
 _COMMON_NAMESPACE = b'package grpc_protoc_plugin.invocation_testing;'
 
+_RELATIVE_PROTO_PATH = 'relative_proto_path'
+_RELATIVE_PYTHON_OUT = 'relative_python_out'
+
 
 @contextlib.contextmanager
-def _system_path(path):
+def _system_path(path_insertion):
     old_system_path = sys.path[:]
-    sys.path = sys.path[0:1] + path + sys.path[1:]
+    sys.path = sys.path[0:1] + path_insertion + sys.path[1:]
     yield
     sys.path = old_system_path
 
 
-class DummySplitServicer(object):
+# NOTE(nathaniel): https://twitter.com/exoplaneteer/status/677259364256747520
+# Life lesson "just always default to idempotence" reinforced.
+def _create_directory_tree(root, path_components_sequence):
+    created = set()
+    for path_components in path_components_sequence:
+        thus_far = ''
+        for path_component in path_components:
+            relative_path = path.join(thus_far, path_component)
+            if relative_path not in created:
+                os.makedirs(path.join(root, relative_path))
+                created.add(relative_path)
+            thus_far = path.join(thus_far, path_component)
+
+
+def _massage_proto_content(proto_content, test_name_bytes,
+                           messages_proto_relative_file_name_bytes):
+    package_substitution = (b'package grpc_protoc_plugin.invocation_testing.' +
+                            test_name_bytes + b';')
+    common_namespace_substituted = proto_content.replace(_COMMON_NAMESPACE,
+                                                         package_substitution)
+    split_namespace_substituted = common_namespace_substituted.replace(
+        _SPLIT_NAMESPACE, package_substitution)
+    message_import_replaced = split_namespace_substituted.replace(
+        _MESSAGES_IMPORT,
+        b'import "' + messages_proto_relative_file_name_bytes + b'";')
+    return message_import_replaced
+
+
+def _packagify(directory):
+    for subdirectory, _, _ in os.walk(directory):
+        init_file_name = path.join(subdirectory, '__init__.py')
+        with open(init_file_name, 'wb') as init_file:
+            init_file.write(b'')
 
-    def __init__(self, request_class, response_class):
-        self.request_class = request_class
-        self.response_class = response_class
+
+class _Servicer(object):
+
+    def __init__(self, response_class):
+        self._response_class = response_class
 
     def Call(self, request, context):
-        return self.response_class()
+        return self._response_class()
 
 
-class SeparateTestMixin(object):
+def _protoc(proto_path, python_out, grpc_python_out_flag, grpc_python_out,
+            absolute_proto_file_names):
+    args = [
+        '',
+        '--proto_path={}'.format(proto_path),
+    ]
+    if python_out is not None:
+        args.append('--python_out={}'.format(python_out))
+    if grpc_python_out is not None:
+        args.append('--grpc_python_out={}:{}'.format(grpc_python_out_flag,
+                                                     grpc_python_out))
+    args.extend(absolute_proto_file_names)
+    return protoc.main(args)
 
-    def testImportAttributes(self):
-        with _system_path([self.python_out_directory]):
-            pb2 = importlib.import_module(self.pb2_import)
-        pb2.Request
-        pb2.Response
-        if self.should_find_services_in_pb2:
-            pb2.TestServiceServicer
-        else:
-            with self.assertRaises(AttributeError):
-                pb2.TestServiceServicer
-
-        with _system_path([self.grpc_python_out_directory]):
-            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-        pb2_grpc.TestServiceServicer
-        with self.assertRaises(AttributeError):
-            pb2_grpc.Request
-        with self.assertRaises(AttributeError):
-            pb2_grpc.Response
-
-    def testCall(self):
-        with _system_path([self.python_out_directory]):
-            pb2 = importlib.import_module(self.pb2_import)
-        with _system_path([self.grpc_python_out_directory]):
-            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-        server = grpc.server(
-            futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-        pb2_grpc.add_TestServiceServicer_to_server(
-            DummySplitServicer(pb2.Request, pb2.Response), server)
-        port = server.add_insecure_port('[::]:0')
-        server.start()
-        channel = grpc.insecure_channel('localhost:{}'.format(port))
-        stub = pb2_grpc.TestServiceStub(channel)
-        request = pb2.Request()
-        expected_response = pb2.Response()
-        response = stub.Call(request)
-        self.assertEqual(expected_response, response)
-
-
-class CommonTestMixin(object):
-
-    def testImportAttributes(self):
-        with _system_path([self.python_out_directory]):
-            pb2 = importlib.import_module(self.pb2_import)
-        pb2.Request
-        pb2.Response
-        if self.should_find_services_in_pb2:
-            pb2.TestServiceServicer
-        else:
-            with self.assertRaises(AttributeError):
-                pb2.TestServiceServicer
-
-        with _system_path([self.grpc_python_out_directory]):
-            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-        pb2_grpc.TestServiceServicer
-        with self.assertRaises(AttributeError):
-            pb2_grpc.Request
-        with self.assertRaises(AttributeError):
-            pb2_grpc.Response
-
-    def testCall(self):
-        with _system_path([self.python_out_directory]):
-            pb2 = importlib.import_module(self.pb2_import)
-        with _system_path([self.grpc_python_out_directory]):
-            pb2_grpc = importlib.import_module(self.pb2_grpc_import)
-        server = grpc.server(
-            futures.ThreadPoolExecutor(max_workers=test_constants.POOL_SIZE))
-        pb2_grpc.add_TestServiceServicer_to_server(
-            DummySplitServicer(pb2.Request, pb2.Response), server)
-        port = server.add_insecure_port('[::]:0')
-        server.start()
-        channel = grpc.insecure_channel('localhost:{}'.format(port))
-        stub = pb2_grpc.TestServiceStub(channel)
-        request = pb2.Request()
-        expected_response = pb2.Response()
-        response = stub.Call(request)
-        self.assertEqual(expected_response, response)
-
-
-@unittest.skipIf(platform.python_implementation() == "PyPy",
-                 "Skip test if run with PyPy")
-class SameSeparateTest(unittest.TestCase, SeparateTestMixin):
 
-    def setUp(self):
-        same_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
-        self.directory = tempfile.mkdtemp(suffix='same_separate', dir='.')
-        self.proto_directory = os.path.join(self.directory, 'proto_path')
-        self.python_out_directory = os.path.join(self.directory, 'python_out')
-        self.grpc_python_out_directory = os.path.join(self.directory,
-                                                      'grpc_python_out')
-        os.makedirs(self.proto_directory)
-        os.makedirs(self.python_out_directory)
-        os.makedirs(self.grpc_python_out_directory)
-        same_proto_file = os.path.join(self.proto_directory,
-                                       'same_separate.proto')
-        open(same_proto_file, 'wb').write(
-            same_proto_contents.replace(
-                _COMMON_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.same_separate;'))
-        protoc_result = protoc.main([
-            '',
-            '--proto_path={}'.format(self.proto_directory),
-            '--python_out={}'.format(self.python_out_directory),
-            '--grpc_python_out=grpc_2_0:{}'.format(
-                self.grpc_python_out_directory),
-            same_proto_file,
-        ])
-        if protoc_result != 0:
-            raise Exception("unexpected protoc error")
-        open(os.path.join(self.grpc_python_out_directory, '__init__.py'),
-             'w').write('')
-        open(os.path.join(self.python_out_directory, '__init__.py'),
-             'w').write('')
-        self.pb2_import = 'same_separate_pb2'
-        self.pb2_grpc_import = 'same_separate_pb2_grpc'
-        self.should_find_services_in_pb2 = False
+class _Mid2016ProtocStyle(object):
 
-    def tearDown(self):
-        shutil.rmtree(self.directory)
+    def name(self):
+        return 'Mid2016ProtocStyle'
 
+    def grpc_in_pb2_expected(self):
+        return True
 
-@unittest.skipIf(platform.python_implementation() == "PyPy",
-                 "Skip test if run with PyPy")
-class SameCommonTest(unittest.TestCase, CommonTestMixin):
+    def protoc(self, proto_path, python_out, absolute_proto_file_names):
+        return (_protoc(proto_path, python_out, 'grpc_1_0', python_out,
+                        absolute_proto_file_names),)
 
-    def setUp(self):
-        same_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing', 'same.proto')
-        self.directory = tempfile.mkdtemp(suffix='same_common', dir='.')
-        self.proto_directory = os.path.join(self.directory, 'proto_path')
-        self.python_out_directory = os.path.join(self.directory, 'python_out')
-        self.grpc_python_out_directory = self.python_out_directory
-        os.makedirs(self.proto_directory)
-        os.makedirs(self.python_out_directory)
-        same_proto_file = os.path.join(self.proto_directory,
-                                       'same_common.proto')
-        open(same_proto_file, 'wb').write(
-            same_proto_contents.replace(
-                _COMMON_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.same_common;'))
-
-        protoc_result = protoc.main([
-            '',
-            '--proto_path={}'.format(self.proto_directory),
-            '--python_out={}'.format(self.python_out_directory),
-            '--grpc_python_out={}'.format(self.grpc_python_out_directory),
-            same_proto_file,
-        ])
-        if protoc_result != 0:
-            raise Exception("unexpected protoc error")
-        open(os.path.join(self.python_out_directory, '__init__.py'),
-             'w').write('')
-        self.pb2_import = 'same_common_pb2'
-        self.pb2_grpc_import = 'same_common_pb2_grpc'
-        self.should_find_services_in_pb2 = True
 
-    def tearDown(self):
-        shutil.rmtree(self.directory)
+class _SingleProtocExecutionProtocStyle(object):
 
+    def name(self):
+        return 'SingleProtocExecutionProtocStyle'
 
-@unittest.skipIf(platform.python_implementation() == "PyPy",
-                 "Skip test if run with PyPy")
-class SplitCommonTest(unittest.TestCase, CommonTestMixin):
+    def grpc_in_pb2_expected(self):
+        return False
 
-    def setUp(self):
-        services_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing.split_services',
-            'services.proto')
-        messages_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing.split_messages',
-            'messages.proto')
-        self.directory = tempfile.mkdtemp(suffix='split_common', dir='.')
-        self.proto_directory = os.path.join(self.directory, 'proto_path')
-        self.python_out_directory = os.path.join(self.directory, 'python_out')
-        self.grpc_python_out_directory = self.python_out_directory
-        os.makedirs(self.proto_directory)
-        os.makedirs(self.python_out_directory)
-        services_proto_file = os.path.join(self.proto_directory,
-                                           'split_common_services.proto')
-        messages_proto_file = os.path.join(self.proto_directory,
-                                           'split_common_messages.proto')
-        open(services_proto_file, 'wb').write(
-            services_proto_contents.replace(
-                _MESSAGES_IMPORT, b'import "split_common_messages.proto";')
-            .replace(
-                _SPLIT_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.split_common;'))
-        open(messages_proto_file, 'wb').write(
-            messages_proto_contents.replace(
-                _SPLIT_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.split_common;'))
-        protoc_result = protoc.main([
-            '',
-            '--proto_path={}'.format(self.proto_directory),
-            '--python_out={}'.format(self.python_out_directory),
-            '--grpc_python_out={}'.format(self.grpc_python_out_directory),
-            services_proto_file,
-            messages_proto_file,
-        ])
-        if protoc_result != 0:
-            raise Exception("unexpected protoc error")
-        open(os.path.join(self.python_out_directory, '__init__.py'),
-             'w').write('')
-        self.pb2_import = 'split_common_messages_pb2'
-        self.pb2_grpc_import = 'split_common_services_pb2_grpc'
-        self.should_find_services_in_pb2 = False
+    def protoc(self, proto_path, python_out, absolute_proto_file_names):
+        return (_protoc(proto_path, python_out, 'grpc_2_0', python_out,
+                        absolute_proto_file_names),)
+
+
+class _ProtoBeforeGrpcProtocStyle(object):
+
+    def name(self):
+        return 'ProtoBeforeGrpcProtocStyle'
+
+    def grpc_in_pb2_expected(self):
+        return False
+
+    def protoc(self, proto_path, python_out, absolute_proto_file_names):
+        pb2_protoc_exit_code = _protoc(proto_path, python_out, None, None,
+                                       absolute_proto_file_names)
+        pb2_grpc_protoc_exit_code = _protoc(
+            proto_path, None, 'grpc_2_0', python_out, absolute_proto_file_names)
+        return pb2_protoc_exit_code, pb2_grpc_protoc_exit_code,
 
-    def tearDown(self):
-        shutil.rmtree(self.directory)
 
+class _GrpcBeforeProtoProtocStyle(object):
 
-@unittest.skipIf(platform.python_implementation() == "PyPy",
-                 "Skip test if run with PyPy")
-class SplitSeparateTest(unittest.TestCase, SeparateTestMixin):
+    def name(self):
+        return 'GrpcBeforeProtoProtocStyle'
+
+    def grpc_in_pb2_expected(self):
+        return False
+
+    def protoc(self, proto_path, python_out, absolute_proto_file_names):
+        pb2_grpc_protoc_exit_code = _protoc(
+            proto_path, None, 'grpc_2_0', python_out, absolute_proto_file_names)
+        pb2_protoc_exit_code = _protoc(proto_path, python_out, None, None,
+                                       absolute_proto_file_names)
+        return pb2_grpc_protoc_exit_code, pb2_protoc_exit_code,
+
+
+_PROTOC_STYLES = (_Mid2016ProtocStyle(), _SingleProtocExecutionProtocStyle(),
+                  _ProtoBeforeGrpcProtocStyle(), _GrpcBeforeProtoProtocStyle(),)
+
+
+@unittest.skipIf(platform.python_implementation() == 'PyPy',
+                 'Skip test if run with PyPy!')
+class _Test(six.with_metaclass(abc.ABCMeta, unittest.TestCase)):
 
     def setUp(self):
-        services_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing.split_services',
-            'services.proto')
-        messages_proto_contents = pkgutil.get_data(
-            'tests.protoc_plugin.protos.invocation_testing.split_messages',
-            'messages.proto')
-        self.directory = tempfile.mkdtemp(suffix='split_separate', dir='.')
-        self.proto_directory = os.path.join(self.directory, 'proto_path')
-        self.python_out_directory = os.path.join(self.directory, 'python_out')
-        self.grpc_python_out_directory = os.path.join(self.directory,
-                                                      'grpc_python_out')
-        os.makedirs(self.proto_directory)
-        os.makedirs(self.python_out_directory)
-        os.makedirs(self.grpc_python_out_directory)
-        services_proto_file = os.path.join(self.proto_directory,
-                                           'split_separate_services.proto')
-        messages_proto_file = os.path.join(self.proto_directory,
-                                           'split_separate_messages.proto')
-        open(services_proto_file, 'wb').write(
-            services_proto_contents.replace(
-                _MESSAGES_IMPORT, b'import "split_separate_messages.proto";')
-            .replace(
-                _SPLIT_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.split_separate;'
-            ))
-        open(messages_proto_file, 'wb').write(
-            messages_proto_contents.replace(
-                _SPLIT_NAMESPACE,
-                b'package grpc_protoc_plugin.invocation_testing.split_separate;'
-            ))
-        protoc_result = protoc.main([
-            '',
-            '--proto_path={}'.format(self.proto_directory),
-            '--python_out={}'.format(self.python_out_directory),
-            '--grpc_python_out=grpc_2_0:{}'.format(
-                self.grpc_python_out_directory),
-            services_proto_file,
-            messages_proto_file,
-        ])
-        if protoc_result != 0:
-            raise Exception("unexpected protoc error")
-        open(os.path.join(self.python_out_directory, '__init__.py'),
-             'w').write('')
-        self.pb2_import = 'split_separate_messages_pb2'
-        self.pb2_grpc_import = 'split_separate_services_pb2_grpc'
-        self.should_find_services_in_pb2 = False
+        self._directory = tempfile.mkdtemp(suffix=self.NAME, dir='.')
+        self._proto_path = path.join(self._directory, _RELATIVE_PROTO_PATH)
+        self._python_out = path.join(self._directory, _RELATIVE_PYTHON_OUT)
+
+        os.makedirs(self._proto_path)
+        os.makedirs(self._python_out)
+
+        proto_directories_and_names = {
+            (self.MESSAGES_PROTO_RELATIVE_DIRECTORY_NAMES,
+             self.MESSAGES_PROTO_FILE_NAME,),
+            (self.SERVICES_PROTO_RELATIVE_DIRECTORY_NAMES,
+             self.SERVICES_PROTO_FILE_NAME,),
+        }
+        messages_proto_relative_file_name_forward_slashes = '/'.join(
+            self.MESSAGES_PROTO_RELATIVE_DIRECTORY_NAMES + (
+                self.MESSAGES_PROTO_FILE_NAME,))
+        _create_directory_tree(self._proto_path, (
+            relative_proto_directory_names
+            for relative_proto_directory_names, _ in proto_directories_and_names
+        ))
+        self._absolute_proto_file_names = set()
+        for relative_directory_names, file_name in proto_directories_and_names:
+            absolute_proto_file_name = path.join(
+                self._proto_path, *relative_directory_names + (file_name,))
+            raw_proto_content = pkgutil.get_data(
+                'tests.protoc_plugin.protos.invocation_testing',
+                path.join(*relative_directory_names + (file_name,)))
+            massaged_proto_content = _massage_proto_content(
+                raw_proto_content,
+                self.NAME.encode(),
+                messages_proto_relative_file_name_forward_slashes.encode())
+            with open(absolute_proto_file_name, 'wb') as proto_file:
+                proto_file.write(massaged_proto_content)
+            self._absolute_proto_file_names.add(absolute_proto_file_name)
 
     def tearDown(self):
-        shutil.rmtree(self.directory)
+        shutil.rmtree(self._directory)
+
+    def _protoc(self):
+        protoc_exit_codes = self.PROTOC_STYLE.protoc(
+            self._proto_path, self._python_out, self._absolute_proto_file_names)
+        for protoc_exit_code in protoc_exit_codes:
+            self.assertEqual(0, protoc_exit_code)
+
+        _packagify(self._python_out)
+
+        generated_modules = {}
+        expected_generated_full_module_names = {
+            self.EXPECTED_MESSAGES_PB2,
+            self.EXPECTED_SERVICES_PB2,
+            self.EXPECTED_SERVICES_PB2_GRPC,
+        }
+        with _system_path([self._python_out]):
+            for full_module_name in expected_generated_full_module_names:
+                module = importlib.import_module(full_module_name)
+                generated_modules[full_module_name] = module
+
+        self._messages_pb2 = generated_modules[self.EXPECTED_MESSAGES_PB2]
+        self._services_pb2 = generated_modules[self.EXPECTED_SERVICES_PB2]
+        self._services_pb2_grpc = generated_modules[
+            self.EXPECTED_SERVICES_PB2_GRPC]
+
+    def _services_modules(self):
+        if self.PROTOC_STYLE.grpc_in_pb2_expected():
+            return self._services_pb2, self._services_pb2_grpc,
+        else:
+            return self._services_pb2_grpc,
+
+    def test_imported_attributes(self):
+        self._protoc()
+
+        self._messages_pb2.Request
+        self._messages_pb2.Response
+        self._services_pb2.DESCRIPTOR.services_by_name['TestService']
+        for services_module in self._services_modules():
+            services_module.TestServiceStub
+            services_module.TestServiceServicer
+            services_module.add_TestServiceServicer_to_server
+
+    def test_call(self):
+        self._protoc()
+
+        for services_module in self._services_modules():
+            server = grpc.server(
+                futures.ThreadPoolExecutor(
+                    max_workers=test_constants.POOL_SIZE))
+            services_module.add_TestServiceServicer_to_server(
+                _Servicer(self._messages_pb2.Response), server)
+            port = server.add_insecure_port('[::]:0')
+            server.start()
+            channel = grpc.insecure_channel('localhost:{}'.format(port))
+            stub = services_module.TestServiceStub(channel)
+            response = stub.Call(self._messages_pb2.Request())
+            self.assertEqual(self._messages_pb2.Response(), response)
+
+
+def _create_test_case_class(split_proto, protoc_style):
+    attributes = {}
+
+    name = '{}{}'.format('SplitProto' if split_proto else 'SameProto',
+                         protoc_style.name())
+    attributes['NAME'] = name
+
+    if split_proto:
+        attributes['MESSAGES_PROTO_RELATIVE_DIRECTORY_NAMES'] = (
+            'split_messages', 'sub',)
+        attributes['MESSAGES_PROTO_FILE_NAME'] = 'messages.proto'
+        attributes['SERVICES_PROTO_RELATIVE_DIRECTORY_NAMES'] = (
+            'split_services',)
+        attributes['SERVICES_PROTO_FILE_NAME'] = 'services.proto'
+        attributes['EXPECTED_MESSAGES_PB2'] = 'split_messages.sub.messages_pb2'
+        attributes['EXPECTED_SERVICES_PB2'] = 'split_services.services_pb2'
+        attributes['EXPECTED_SERVICES_PB2_GRPC'] = (
+            'split_services.services_pb2_grpc')
+    else:
+        attributes['MESSAGES_PROTO_RELATIVE_DIRECTORY_NAMES'] = ()
+        attributes['MESSAGES_PROTO_FILE_NAME'] = 'same.proto'
+        attributes['SERVICES_PROTO_RELATIVE_DIRECTORY_NAMES'] = ()
+        attributes['SERVICES_PROTO_FILE_NAME'] = 'same.proto'
+        attributes['EXPECTED_MESSAGES_PB2'] = 'same_pb2'
+        attributes['EXPECTED_SERVICES_PB2'] = 'same_pb2'
+        attributes['EXPECTED_SERVICES_PB2_GRPC'] = 'same_pb2_grpc'
+
+    attributes['PROTOC_STYLE'] = protoc_style
+
+    attributes['__module__'] = _Test.__module__
+
+    return type('{}Test'.format(name), (_Test,), attributes)
+
+
+def _create_test_case_classes():
+    for split_proto in (False, True,):
+        for protoc_style in _PROTOC_STYLES:
+            yield _create_test_case_class(split_proto, protoc_style)
+
+
+def load_tests(loader, tests, pattern):
+    tests = tuple(
+        loader.loadTestsFromTestCase(test_case_class)
+        for test_case_class in _create_test_case_classes())
+    return unittest.TestSuite(tests=tests)
 
 
 if __name__ == '__main__':
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
index 83f21ecbbb..424b153ff8 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
+++ b/src/python/grpcio_tests/tests/protoc_plugin/beta_python_plugin_test.py
@@ -12,19 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import argparse
 import contextlib
-import distutils.spawn
-import errno
-import itertools
+import importlib
 import os
-import pkg_resources
+from os import path
+import pkgutil
 import shutil
-import subprocess
 import sys
 import tempfile
 import threading
-import time
 import unittest
 
 from six import moves
@@ -33,12 +29,22 @@ from grpc.beta import implementations
 from grpc.beta import interfaces
 from grpc.framework.foundation import future
 from grpc.framework.interfaces.face import face
+from grpc_tools import protoc
 from tests.unit.framework.common import test_constants
 
-import tests.protoc_plugin.protos.payload.test_payload_pb2 as payload_pb2
-import tests.protoc_plugin.protos.requests.r.test_requests_pb2 as request_pb2
-import tests.protoc_plugin.protos.responses.test_responses_pb2 as response_pb2
-import tests.protoc_plugin.protos.service.test_service_pb2 as service_pb2
+_RELATIVE_PROTO_PATH = 'relative_proto_path'
+_RELATIVE_PYTHON_OUT = 'relative_python_out'
+
+_PROTO_FILES_PATH_COMPONENTS = (
+    ('beta_grpc_plugin_test', 'payload', 'test_payload.proto',),
+    ('beta_grpc_plugin_test', 'requests', 'r', 'test_requests.proto',),
+    ('beta_grpc_plugin_test', 'responses', 'test_responses.proto',),
+    ('beta_grpc_plugin_test', 'service', 'test_service.proto',),)
+
+_PAYLOAD_PB2 = 'beta_grpc_plugin_test.payload.test_payload_pb2'
+_REQUESTS_PB2 = 'beta_grpc_plugin_test.requests.r.test_requests_pb2'
+_RESPONSES_PB2 = 'beta_grpc_plugin_test.responses.test_responses_pb2'
+_SERVICE_PB2 = 'beta_grpc_plugin_test.service.test_service_pb2'
 
 # Identifiers of entities we expect to find in the generated module.
 SERVICER_IDENTIFIER = 'BetaTestServiceServicer'
@@ -47,12 +53,50 @@ SERVER_FACTORY_IDENTIFIER = 'beta_create_TestService_server'
 STUB_FACTORY_IDENTIFIER = 'beta_create_TestService_stub'
 
 
+@contextlib.contextmanager
+def _system_path(path_insertion):
+    old_system_path = sys.path[:]
+    sys.path = sys.path[0:1] + path_insertion + sys.path[1:]
+    yield
+    sys.path = old_system_path
+
+
+def _create_directory_tree(root, path_components_sequence):
+    created = set()
+    for path_components in path_components_sequence:
+        thus_far = ''
+        for path_component in path_components:
+            relative_path = path.join(thus_far, path_component)
+            if relative_path not in created:
+                os.makedirs(path.join(root, relative_path))
+                created.add(relative_path)
+            thus_far = path.join(thus_far, path_component)
+
+
+def _massage_proto_content(raw_proto_content):
+    imports_substituted = raw_proto_content.replace(
+        b'import "tests/protoc_plugin/protos/',
+        b'import "beta_grpc_plugin_test/')
+    package_statement_substituted = imports_substituted.replace(
+        b'package grpc_protoc_plugin;', b'package beta_grpc_protoc_plugin;')
+    return package_statement_substituted
+
+
+def _packagify(directory):
+    for subdirectory, _, _ in os.walk(directory):
+        init_file_name = path.join(subdirectory, '__init__.py')
+        with open(init_file_name, 'wb') as init_file:
+            init_file.write(b'')
+
+
 class _ServicerMethods(object):
 
-    def __init__(self):
+    def __init__(self, payload_pb2, responses_pb2):
         self._condition = threading.Condition()
         self._paused = False
         self._fail = False
+        self._payload_pb2 = payload_pb2
+        self._responses_pb2 = responses_pb2
 
     @contextlib.contextmanager
     def pause(self):  # pylint: disable=invalid-name
@@ -79,22 +123,22 @@ class _ServicerMethods(object):
                 self._condition.wait()
 
     def UnaryCall(self, request, unused_rpc_context):
-        response = response_pb2.SimpleResponse()
-        response.payload.payload_type = payload_pb2.COMPRESSABLE
+        response = self._responses_pb2.SimpleResponse()
+        response.payload.payload_type = self._payload_pb2.COMPRESSABLE
         response.payload.payload_compressable = 'a' * request.response_size
         self._control()
         return response
 
     def StreamingOutputCall(self, request, unused_rpc_context):
         for parameter in request.response_parameters:
-            response = response_pb2.StreamingOutputCallResponse()
-            response.payload.payload_type = payload_pb2.COMPRESSABLE
+            response = self._responses_pb2.StreamingOutputCallResponse()
+            response.payload.payload_type = self._payload_pb2.COMPRESSABLE
             response.payload.payload_compressable = 'a' * parameter.size
             self._control()
             yield response
 
     def StreamingInputCall(self, request_iter, unused_rpc_context):
-        response = response_pb2.StreamingInputCallResponse()
+        response = self._responses_pb2.StreamingInputCallResponse()
         aggregated_payload_size = 0
         for request in request_iter:
             aggregated_payload_size += len(request.payload.payload_compressable)
@@ -105,8 +149,8 @@ class _ServicerMethods(object):
     def FullDuplexCall(self, request_iter, unused_rpc_context):
         for request in request_iter:
             for parameter in request.response_parameters:
-                response = response_pb2.StreamingOutputCallResponse()
-                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response = self._responses_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = self._payload_pb2.COMPRESSABLE
                 response.payload.payload_compressable = 'a' * parameter.size
                 self._control()
                 yield response
@@ -115,8 +159,8 @@ class _ServicerMethods(object):
         responses = []
         for request in request_iter:
             for parameter in request.response_parameters:
-                response = response_pb2.StreamingOutputCallResponse()
-                response.payload.payload_type = payload_pb2.COMPRESSABLE
+                response = self._responses_pb2.StreamingOutputCallResponse()
+                response.payload.payload_type = self._payload_pb2.COMPRESSABLE
                 response.payload.payload_compressable = 'a' * parameter.size
                 self._control()
                 responses.append(response)
@@ -125,7 +169,7 @@ class _ServicerMethods(object):
 
 
 @contextlib.contextmanager
-def _CreateService():
+def _CreateService(payload_pb2, responses_pb2, service_pb2):
     """Provides a servicer backend and a stub.
 
   The servicer is just the implementation of the actual servicer passed to the
@@ -136,7 +180,7 @@ def _CreateService():
       the service bound to the stub and and stub is the stub on which to invoke
       RPCs.
   """
-    servicer_methods = _ServicerMethods()
+    servicer_methods = _ServicerMethods(payload_pb2, responses_pb2)
 
     class Servicer(getattr(service_pb2, SERVICER_IDENTIFIER)):
 
@@ -161,12 +205,12 @@ def _CreateService():
     server.start()
     channel = implementations.insecure_channel('localhost', port)
     stub = getattr(service_pb2, STUB_FACTORY_IDENTIFIER)(channel)
-    yield (servicer_methods, stub)
+    yield servicer_methods, stub,
     server.stop(0)
 
 
 @contextlib.contextmanager
-def _CreateIncompleteService():
+def _CreateIncompleteService(service_pb2):
     """Provides a servicer backend that fails to implement methods and its stub.
 
   The servicer is just the implementation of the actual servicer passed to the
@@ -192,16 +236,16 @@ def _CreateIncompleteService():
     server.stop(0)
 
 
-def _streaming_input_request_iterator():
+def _streaming_input_request_iterator(payload_pb2, requests_pb2):
     for _ in range(3):
-        request = request_pb2.StreamingInputCallRequest()
+        request = requests_pb2.StreamingInputCallRequest()
         request.payload.payload_type = payload_pb2.COMPRESSABLE
         request.payload.payload_compressable = 'a'
         yield request
 
 
-def _streaming_output_request():
-    request = request_pb2.StreamingOutputCallRequest()
+def _streaming_output_request(requests_pb2):
+    request = requests_pb2.StreamingOutputCallRequest()
     sizes = [1, 2, 3]
     request.response_parameters.add(size=sizes[0], interval_us=0)
     request.response_parameters.add(size=sizes[1], interval_us=0)
@@ -209,11 +253,11 @@ def _streaming_output_request():
     return request
 
 
-def _full_duplex_request_iterator():
-    request = request_pb2.StreamingOutputCallRequest()
+def _full_duplex_request_iterator(requests_pb2):
+    request = requests_pb2.StreamingOutputCallRequest()
     request.response_parameters.add(size=1, interval_us=0)
     yield request
-    request = request_pb2.StreamingOutputCallRequest()
+    request = requests_pb2.StreamingOutputCallRequest()
     request.response_parameters.add(size=2, interval_us=0)
     request.response_parameters.add(size=3, interval_us=0)
     yield request
@@ -227,22 +271,78 @@ class PythonPluginTest(unittest.TestCase):
   methods and does not exist for response-streaming methods.
   """
 
+    def setUp(self):
+        self._directory = tempfile.mkdtemp(dir='.')
+        self._proto_path = path.join(self._directory, _RELATIVE_PROTO_PATH)
+        self._python_out = path.join(self._directory, _RELATIVE_PYTHON_OUT)
+
+        os.makedirs(self._proto_path)
+        os.makedirs(self._python_out)
+
+        directories_path_components = {
+            proto_file_path_components[:-1]
+            for proto_file_path_components in _PROTO_FILES_PATH_COMPONENTS
+        }
+        _create_directory_tree(self._proto_path, directories_path_components)
+        self._proto_file_names = set()
+        for proto_file_path_components in _PROTO_FILES_PATH_COMPONENTS:
+            raw_proto_content = pkgutil.get_data(
+                'tests.protoc_plugin.protos',
+                path.join(*proto_file_path_components[1:]))
+            massaged_proto_content = _massage_proto_content(raw_proto_content)
+            proto_file_name = path.join(self._proto_path,
+                                        *proto_file_path_components)
+            with open(proto_file_name, 'wb') as proto_file:
+                proto_file.write(massaged_proto_content)
+            self._proto_file_names.add(proto_file_name)
+
+    def tearDown(self):
+        shutil.rmtree(self._directory)
+
+    def _protoc(self):
+        args = [
+            '',
+            '--proto_path={}'.format(self._proto_path),
+            '--python_out={}'.format(self._python_out),
+            '--grpc_python_out=grpc_1_0:{}'.format(self._python_out),
+        ] + list(self._proto_file_names)
+        protoc_exit_code = protoc.main(args)
+        self.assertEqual(0, protoc_exit_code)
+
+        _packagify(self._python_out)
+
+        with _system_path([
+                self._python_out,
+        ]):
+            self._payload_pb2 = importlib.import_module(_PAYLOAD_PB2)
+            self._requests_pb2 = importlib.import_module(_REQUESTS_PB2)
+            self._responses_pb2 = importlib.import_module(_RESPONSES_PB2)
+            self._service_pb2 = importlib.import_module(_SERVICE_PB2)
+
     def testImportAttributes(self):
+        self._protoc()
+
         # check that we can access the generated module and its members.
-        self.assertIsNotNone(getattr(service_pb2, SERVICER_IDENTIFIER, None))
-        self.assertIsNotNone(getattr(service_pb2, STUB_IDENTIFIER, None))
         self.assertIsNotNone(
-            getattr(service_pb2, SERVER_FACTORY_IDENTIFIER, None))
+            getattr(self._service_pb2, SERVICER_IDENTIFIER, None))
+        self.assertIsNotNone(getattr(self._service_pb2, STUB_IDENTIFIER, None))
         self.assertIsNotNone(
-            getattr(service_pb2, STUB_FACTORY_IDENTIFIER, None))
+            getattr(self._service_pb2, SERVER_FACTORY_IDENTIFIER, None))
+        self.assertIsNotNone(
+            getattr(self._service_pb2, STUB_FACTORY_IDENTIFIER, None))
 
     def testUpDown(self):
-        with _CreateService():
-            request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2):
+            self._requests_pb2.SimpleRequest(response_size=13)
 
     def testIncompleteServicer(self):
-        with _CreateIncompleteService() as (_, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateIncompleteService(self._service_pb2) as (_, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             try:
                 stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
             except face.AbortionError as error:
@@ -250,15 +350,21 @@ class PythonPluginTest(unittest.TestCase):
                                  error.code)
 
     def testUnaryCall(self):
-        with _CreateService() as (methods, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             response = stub.UnaryCall(request, test_constants.LONG_TIMEOUT)
         expected_response = methods.UnaryCall(request, 'not a real context!')
         self.assertEqual(expected_response, response)
 
     def testUnaryCallFuture(self):
-        with _CreateService() as (methods, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             # Check that the call does not block waiting for the server to respond.
             with methods.pause():
                 response_future = stub.UnaryCall.future(
@@ -268,8 +374,11 @@ class PythonPluginTest(unittest.TestCase):
         self.assertEqual(expected_response, response)
 
     def testUnaryCallFutureExpired(self):
-        with _CreateService() as (methods, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             with methods.pause():
                 response_future = stub.UnaryCall.future(
                     request, test_constants.SHORT_TIMEOUT)
@@ -277,24 +386,33 @@ class PythonPluginTest(unittest.TestCase):
                     response_future.result()
 
     def testUnaryCallFutureCancelled(self):
-        with _CreateService() as (methods, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             with methods.pause():
                 response_future = stub.UnaryCall.future(request, 1)
                 response_future.cancel()
                 self.assertTrue(response_future.cancelled())
 
     def testUnaryCallFutureFailed(self):
-        with _CreateService() as (methods, stub):
-            request = request_pb2.SimpleRequest(response_size=13)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = self._requests_pb2.SimpleRequest(response_size=13)
             with methods.fail():
                 response_future = stub.UnaryCall.future(
                     request, test_constants.LONG_TIMEOUT)
                 self.assertIsNotNone(response_future.exception())
 
     def testStreamingOutputCall(self):
-        with _CreateService() as (methods, stub):
-            request = _streaming_output_request()
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = _streaming_output_request(self._requests_pb2)
             responses = stub.StreamingOutputCall(request,
                                                  test_constants.LONG_TIMEOUT)
             expected_responses = methods.StreamingOutputCall(
@@ -304,8 +422,11 @@ class PythonPluginTest(unittest.TestCase):
                 self.assertEqual(expected_response, response)
 
     def testStreamingOutputCallExpired(self):
-        with _CreateService() as (methods, stub):
-            request = _streaming_output_request()
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = _streaming_output_request(self._requests_pb2)
             with methods.pause():
                 responses = stub.StreamingOutputCall(
                     request, test_constants.SHORT_TIMEOUT)
@@ -313,8 +434,11 @@ class PythonPluginTest(unittest.TestCase):
                     list(responses)
 
     def testStreamingOutputCallCancelled(self):
-        with _CreateService() as (methods, stub):
-            request = _streaming_output_request()
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = _streaming_output_request(self._requests_pb2)
             responses = stub.StreamingOutputCall(request,
                                                  test_constants.LONG_TIMEOUT)
             next(responses)
@@ -323,8 +447,11 @@ class PythonPluginTest(unittest.TestCase):
                 next(responses)
 
     def testStreamingOutputCallFailed(self):
-        with _CreateService() as (methods, stub):
-            request = _streaming_output_request()
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request = _streaming_output_request(self._requests_pb2)
             with methods.fail():
                 responses = stub.StreamingOutputCall(request, 1)
                 self.assertIsNotNone(responses)
@@ -332,30 +459,46 @@ class PythonPluginTest(unittest.TestCase):
                     next(responses)
 
     def testStreamingInputCall(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             response = stub.StreamingInputCall(
-                _streaming_input_request_iterator(),
+                _streaming_input_request_iterator(self._payload_pb2,
+                                                  self._requests_pb2),
                 test_constants.LONG_TIMEOUT)
         expected_response = methods.StreamingInputCall(
-            _streaming_input_request_iterator(), 'not a real RpcContext!')
+            _streaming_input_request_iterator(self._payload_pb2,
+                                              self._requests_pb2),
+            'not a real RpcContext!')
         self.assertEqual(expected_response, response)
 
     def testStreamingInputCallFuture(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.pause():
                 response_future = stub.StreamingInputCall.future(
-                    _streaming_input_request_iterator(),
+                    _streaming_input_request_iterator(self._payload_pb2,
+                                                      self._requests_pb2),
                     test_constants.LONG_TIMEOUT)
             response = response_future.result()
         expected_response = methods.StreamingInputCall(
-            _streaming_input_request_iterator(), 'not a real RpcContext!')
+            _streaming_input_request_iterator(self._payload_pb2,
+                                              self._requests_pb2),
+            'not a real RpcContext!')
         self.assertEqual(expected_response, response)
 
     def testStreamingInputCallFutureExpired(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.pause():
                 response_future = stub.StreamingInputCall.future(
-                    _streaming_input_request_iterator(),
+                    _streaming_input_request_iterator(self._payload_pb2,
+                                                      self._requests_pb2),
                     test_constants.SHORT_TIMEOUT)
                 with self.assertRaises(face.ExpirationError):
                     response_future.result()
@@ -363,10 +506,14 @@ class PythonPluginTest(unittest.TestCase):
                                       face.ExpirationError)
 
     def testStreamingInputCallFutureCancelled(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.pause():
                 response_future = stub.StreamingInputCall.future(
-                    _streaming_input_request_iterator(),
+                    _streaming_input_request_iterator(self._payload_pb2,
+                                                      self._requests_pb2),
                     test_constants.LONG_TIMEOUT)
                 response_future.cancel()
                 self.assertTrue(response_future.cancelled())
@@ -374,26 +521,38 @@ class PythonPluginTest(unittest.TestCase):
                 response_future.result()
 
     def testStreamingInputCallFutureFailed(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.fail():
                 response_future = stub.StreamingInputCall.future(
-                    _streaming_input_request_iterator(),
+                    _streaming_input_request_iterator(self._payload_pb2,
+                                                      self._requests_pb2),
                     test_constants.LONG_TIMEOUT)
                 self.assertIsNotNone(response_future.exception())
 
     def testFullDuplexCall(self):
-        with _CreateService() as (methods, stub):
-            responses = stub.FullDuplexCall(_full_duplex_request_iterator(),
-                                            test_constants.LONG_TIMEOUT)
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            responses = stub.FullDuplexCall(
+                _full_duplex_request_iterator(self._requests_pb2),
+                test_constants.LONG_TIMEOUT)
             expected_responses = methods.FullDuplexCall(
-                _full_duplex_request_iterator(), 'not a real RpcContext!')
+                _full_duplex_request_iterator(self._requests_pb2),
+                'not a real RpcContext!')
             for expected_response, response in moves.zip_longest(
                     expected_responses, responses):
                 self.assertEqual(expected_response, response)
 
     def testFullDuplexCallExpired(self):
-        request_iterator = _full_duplex_request_iterator()
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        request_iterator = _full_duplex_request_iterator(self._requests_pb2)
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.pause():
                 responses = stub.FullDuplexCall(request_iterator,
                                                 test_constants.SHORT_TIMEOUT)
@@ -401,8 +560,11 @@ class PythonPluginTest(unittest.TestCase):
                     list(responses)
 
     def testFullDuplexCallCancelled(self):
-        with _CreateService() as (methods, stub):
-            request_iterator = _full_duplex_request_iterator()
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
+            request_iterator = _full_duplex_request_iterator(self._requests_pb2)
             responses = stub.FullDuplexCall(request_iterator,
                                             test_constants.LONG_TIMEOUT)
             next(responses)
@@ -411,8 +573,11 @@ class PythonPluginTest(unittest.TestCase):
                 next(responses)
 
     def testFullDuplexCallFailed(self):
-        request_iterator = _full_duplex_request_iterator()
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        request_iterator = _full_duplex_request_iterator(self._requests_pb2)
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with methods.fail():
                 responses = stub.FullDuplexCall(request_iterator,
                                                 test_constants.LONG_TIMEOUT)
@@ -421,13 +586,16 @@ class PythonPluginTest(unittest.TestCase):
                     next(responses)
 
     def testHalfDuplexCall(self):
-        with _CreateService() as (methods, stub):
+        self._protoc()
+
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
 
             def half_duplex_request_iterator():
-                request = request_pb2.StreamingOutputCallRequest()
+                request = self._requests_pb2.StreamingOutputCallRequest()
                 request.response_parameters.add(size=1, interval_us=0)
                 yield request
-                request = request_pb2.StreamingOutputCallRequest()
+                request = self._requests_pb2.StreamingOutputCallRequest()
                 request.response_parameters.add(size=2, interval_us=0)
                 request.response_parameters.add(size=3, interval_us=0)
                 yield request
@@ -441,6 +609,8 @@ class PythonPluginTest(unittest.TestCase):
                 self.assertEqual(expected_response, response)
 
     def testHalfDuplexCallWedged(self):
+        self._protoc()
+
         condition = threading.Condition()
         wait_cell = [False]
 
@@ -455,14 +625,15 @@ class PythonPluginTest(unittest.TestCase):
                 condition.notify_all()
 
         def half_duplex_request_iterator():
-            request = request_pb2.StreamingOutputCallRequest()
+            request = self._requests_pb2.StreamingOutputCallRequest()
             request.response_parameters.add(size=1, interval_us=0)
             yield request
             with condition:
                 while wait_cell[0]:
                     condition.wait()
 
-        with _CreateService() as (methods, stub):
+        with _CreateService(self._payload_pb2, self._responses_pb2,
+                            self._service_pb2) as (methods, stub):
             with wait():
                 responses = stub.HalfDuplexCall(half_duplex_request_iterator(),
                                                 test_constants.SHORT_TIMEOUT)
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/messages.proto b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/sub/messages.proto
index 1b780c69ba..1b780c69ba 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/messages.proto
+++ b/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_messages/sub/messages.proto
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_client.py b/src/python/grpcio_tests/tests/qps/benchmark_client.py
index 5f4df79c5b..17fa61ea36 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_client.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_client.py
@@ -22,7 +22,7 @@ from six.moves import queue
 
 import grpc
 from src.proto.grpc.testing import messages_pb2
-from src.proto.grpc.testing import services_pb2
+from src.proto.grpc.testing import services_pb2_grpc
 from tests.unit import resources
 from tests.unit import test_common
 
@@ -58,7 +58,7 @@ class BenchmarkClient:
 
         if config.payload_config.WhichOneof('payload') == 'simple_params':
             self._generic = False
-            self._stub = services_pb2.BenchmarkServiceStub(channel)
+            self._stub = services_pb2_grpc.BenchmarkServiceStub(channel)
             payload = messages_pb2.Payload(
                 body='\0' * config.payload_config.simple_params.req_size)
             self._request = messages_pb2.SimpleRequest(
diff --git a/src/python/grpcio_tests/tests/qps/benchmark_server.py b/src/python/grpcio_tests/tests/qps/benchmark_server.py
index 05101fdc6d..bb07844491 100644
--- a/src/python/grpcio_tests/tests/qps/benchmark_server.py
+++ b/src/python/grpcio_tests/tests/qps/benchmark_server.py
@@ -13,10 +13,10 @@
 # limitations under the License.
 
 from src.proto.grpc.testing import messages_pb2
-from src.proto.grpc.testing import services_pb2
+from src.proto.grpc.testing import services_pb2_grpc
 
 
-class BenchmarkServer(services_pb2.BenchmarkServiceServicer):
+class BenchmarkServer(services_pb2_grpc.BenchmarkServiceServicer):
     """Synchronous Server implementation for the Benchmark service."""
 
     def UnaryCall(self, request, context):
@@ -29,7 +29,7 @@ class BenchmarkServer(services_pb2.BenchmarkServiceServicer):
             yield messages_pb2.SimpleResponse(payload=payload)
 
 
-class GenericBenchmarkServer(services_pb2.BenchmarkServiceServicer):
+class GenericBenchmarkServer(services_pb2_grpc.BenchmarkServiceServicer):
     """Generic Server implementation for the Benchmark service."""
 
     def __init__(self, resp_size):
diff --git a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
index 299ce75e79..a86743fa5a 100644
--- a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
+++ b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
@@ -95,9 +95,6 @@ class ReflectionServicerTest(unittest.TestCase):
                 )),)
         self.assertSequenceEqual(expected_responses, responses)
 
-    @unittest.skip(
-        'TODO(mmx): enable when (pure) python protobuf issue is fixed'
-        '(see https://github.com/google/protobuf/issues/2882)')
     def testFileContainingExtension(self):
         requests = (reflection_pb2.ServerReflectionRequest(
             file_containing_extension=reflection_pb2.ExtensionRequest(
diff --git a/src/python/grpcio_tests/tests/stress/client.py b/src/python/grpcio_tests/tests/stress/client.py
index d5ff0064fd..40caa3926a 100644
--- a/src/python/grpcio_tests/tests/stress/client.py
+++ b/src/python/grpcio_tests/tests/stress/client.py
@@ -20,7 +20,7 @@ import threading
 import grpc
 from six.moves import queue
 from src.proto.grpc.testing import metrics_pb2_grpc
-from src.proto.grpc.testing import test_pb2
+from src.proto.grpc.testing import test_pb2_grpc
 
 from tests.interop import methods
 from tests.interop import resources
@@ -133,7 +133,7 @@ def run_test(args):
         for _ in xrange(args.num_channels_per_server):
             channel = _get_channel(test_server_target, args)
             for _ in xrange(args.num_stubs_per_channel):
-                stub = test_pb2.TestServiceStub(channel)
+                stub = test_pb2_grpc.TestServiceStub(channel)
                 runner = test_runner.TestRunner(stub, test_cases, hist,
                                                 exception_queue, stop_event)
                 runners.append(runner)
diff --git a/src/python/grpcio_tests/tests/stress/metrics_server.py b/src/python/grpcio_tests/tests/stress/metrics_server.py
index 11ab6c3f4e..33a74b4a38 100644
--- a/src/python/grpcio_tests/tests/stress/metrics_server.py
+++ b/src/python/grpcio_tests/tests/stress/metrics_server.py
@@ -16,11 +16,12 @@
 import time
 
 from src.proto.grpc.testing import metrics_pb2
+from src.proto.grpc.testing import metrics_pb2_grpc
 
 GAUGE_NAME = 'python_overall_qps'
 
 
-class MetricsServer(metrics_pb2.MetricsServiceServicer):
+class MetricsServer(metrics_pb2_grpc.MetricsServiceServicer):
 
     def __init__(self, histogram):
         self._start_time = time.time()
diff --git a/src/python/grpcio_tests/tests/testing/_server_application.py b/src/python/grpcio_tests/tests/testing/_server_application.py
new file mode 100644
index 0000000000..06f09c8cb4
--- /dev/null
+++ b/src/python/grpcio_tests/tests/testing/_server_application.py
@@ -0,0 +1,66 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""An example gRPC Python-using server-side application."""
+
+import grpc
+
+# requests_pb2 is a semantic dependency of this module.
+from tests.testing import _application_common
+from tests.testing.proto import requests_pb2  # pylint: disable=unused-import
+from tests.testing.proto import services_pb2
+from tests.testing.proto import services_pb2_grpc
+
+
+class FirstServiceServicer(services_pb2_grpc.FirstServiceServicer):
+    """Services RPCs."""
+
+    def UnUn(self, request, context):
+        if _application_common.UNARY_UNARY_REQUEST == request:
+            return _application_common.UNARY_UNARY_RESPONSE
+        else:
+            context.set_code(grpc.StatusCode.INVALID_ARGUMENT)
+            context.set_details('Something is wrong with your request!')
+            return services_pb2.Down()
+
+    def UnStre(self, request, context):
+        if _application_common.UNARY_STREAM_REQUEST != request:
+            context.set_code(grpc.StatusCode.INVALID_ARGUMENT)
+            context.set_details('Something is wrong with your request!')
+        return
+        yield services_pb2.Strange()
+
+    def StreUn(self, request_iterator, context):
+        context.send_initial_metadata((
+            ('server_application_metadata_key', 'Hi there!',),))
+        for request in request_iterator:
+            if request != _application_common.STREAM_UNARY_REQUEST:
+                context.set_code(grpc.StatusCode.INVALID_ARGUMENT)
+                context.set_details('Something is wrong with your request!')
+                return services_pb2.Strange()
+            elif not context.is_active():
+                return services_pb2.Strange()
+        else:
+            return _application_common.STREAM_UNARY_RESPONSE
+
+    def StreStre(self, request_iterator, context):
+        for request in request_iterator:
+            if request != _application_common.STREAM_STREAM_REQUEST:
+                context.set_code(grpc.StatusCode.INVALID_ARGUMENT)
+                context.set_details('Something is wrong with your request!')
+                return
+            elif not context.is_active():
+                return
+            else:
+                yield _application_common.STREAM_STREAM_RESPONSE
+                yield _application_common.STREAM_STREAM_RESPONSE
diff --git a/src/python/grpcio_tests/tests/testing/_server_test.py b/src/python/grpcio_tests/tests/testing/_server_test.py
new file mode 100644
index 0000000000..7897bcce01
--- /dev/null
+++ b/src/python/grpcio_tests/tests/testing/_server_test.py
@@ -0,0 +1,169 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import time
+import unittest
+
+import grpc
+import grpc_testing
+
+from tests.testing import _application_common
+from tests.testing import _application_testing_common
+from tests.testing import _server_application
+from tests.testing.proto import services_pb2
+
+
+# TODO(https://github.com/google/protobuf/issues/3452): Drop this skip.
+@unittest.skipIf(
+    services_pb2.DESCRIPTOR.services_by_name.get('FirstService') is None,
+    'Fix protobuf issue 3452!')
+class FirstServiceServicerTest(unittest.TestCase):
+
+    def setUp(self):
+        self._real_time = grpc_testing.strict_real_time()
+        self._fake_time = grpc_testing.strict_fake_time(time.time())
+        servicer = _server_application.FirstServiceServicer()
+        descriptors_to_servicers = {
+            _application_testing_common.FIRST_SERVICE: servicer
+        }
+        self._real_time_server = grpc_testing.server_from_dictionary(
+            descriptors_to_servicers, self._real_time)
+        self._fake_time_server = grpc_testing.server_from_dictionary(
+            descriptors_to_servicers, self._fake_time)
+
+    def test_successful_unary_unary(self):
+        rpc = self._real_time_server.invoke_unary_unary(
+            _application_testing_common.FIRST_SERVICE_UNUN, (),
+            _application_common.UNARY_UNARY_REQUEST, None)
+        initial_metadata = rpc.initial_metadata()
+        response, trailing_metadata, code, details = rpc.termination()
+
+        self.assertEqual(_application_common.UNARY_UNARY_RESPONSE, response)
+        self.assertIs(code, grpc.StatusCode.OK)
+
+    def test_successful_unary_stream(self):
+        rpc = self._real_time_server.invoke_unary_stream(
+            _application_testing_common.FIRST_SERVICE_UNSTRE, (),
+            _application_common.UNARY_STREAM_REQUEST, None)
+        initial_metadata = rpc.initial_metadata()
+        trailing_metadata, code, details = rpc.termination()
+
+        self.assertIs(code, grpc.StatusCode.OK)
+
+    def test_successful_stream_unary(self):
+        rpc = self._real_time_server.invoke_stream_unary(
+            _application_testing_common.FIRST_SERVICE_STREUN, (), None)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.requests_closed()
+        initial_metadata = rpc.initial_metadata()
+        response, trailing_metadata, code, details = rpc.termination()
+
+        self.assertEqual(_application_common.STREAM_UNARY_RESPONSE, response)
+        self.assertIs(code, grpc.StatusCode.OK)
+
+    def test_successful_stream_stream(self):
+        rpc = self._real_time_server.invoke_stream_stream(
+            _application_testing_common.FIRST_SERVICE_STRESTRE, (), None)
+        rpc.send_request(_application_common.STREAM_STREAM_REQUEST)
+        initial_metadata = rpc.initial_metadata()
+        responses = [
+            rpc.take_response(),
+            rpc.take_response(),
+        ]
+        rpc.send_request(_application_common.STREAM_STREAM_REQUEST)
+        rpc.send_request(_application_common.STREAM_STREAM_REQUEST)
+        responses.extend([
+            rpc.take_response(),
+            rpc.take_response(),
+            rpc.take_response(),
+            rpc.take_response(),
+        ])
+        rpc.requests_closed()
+        trailing_metadata, code, details = rpc.termination()
+
+        for response in responses:
+            self.assertEqual(_application_common.STREAM_STREAM_RESPONSE,
+                             response)
+        self.assertIs(code, grpc.StatusCode.OK)
+
+    def test_server_rpc_idempotence(self):
+        rpc = self._real_time_server.invoke_unary_unary(
+            _application_testing_common.FIRST_SERVICE_UNUN, (),
+            _application_common.UNARY_UNARY_REQUEST, None)
+        first_initial_metadata = rpc.initial_metadata()
+        second_initial_metadata = rpc.initial_metadata()
+        third_initial_metadata = rpc.initial_metadata()
+        first_termination = rpc.termination()
+        second_termination = rpc.termination()
+        third_termination = rpc.termination()
+
+        for later_initial_metadata in (second_initial_metadata,
+                                       third_initial_metadata,):
+            self.assertEqual(first_initial_metadata, later_initial_metadata)
+        response = first_termination[0]
+        terminal_metadata = first_termination[1]
+        code = first_termination[2]
+        details = first_termination[3]
+        for later_termination in (second_termination, third_termination,):
+            self.assertEqual(response, later_termination[0])
+            self.assertEqual(terminal_metadata, later_termination[1])
+            self.assertIs(code, later_termination[2])
+            self.assertEqual(details, later_termination[3])
+        self.assertEqual(_application_common.UNARY_UNARY_RESPONSE, response)
+        self.assertIs(code, grpc.StatusCode.OK)
+
+    def test_misbehaving_client_unary_unary(self):
+        rpc = self._real_time_server.invoke_unary_unary(
+            _application_testing_common.FIRST_SERVICE_UNUN, (),
+            _application_common.ERRONEOUS_UNARY_UNARY_REQUEST, None)
+        initial_metadata = rpc.initial_metadata()
+        response, trailing_metadata, code, details = rpc.termination()
+
+        self.assertIsNot(code, grpc.StatusCode.OK)
+
+    def test_infinite_request_stream_real_time(self):
+        rpc = self._real_time_server.invoke_stream_unary(
+            _application_testing_common.FIRST_SERVICE_STREUN, (),
+            _application_common.INFINITE_REQUEST_STREAM_TIMEOUT)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        initial_metadata = rpc.initial_metadata()
+        self._real_time.sleep_for(
+            _application_common.INFINITE_REQUEST_STREAM_TIMEOUT * 2)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        response, trailing_metadata, code, details = rpc.termination()
+
+        self.assertIs(code, grpc.StatusCode.DEADLINE_EXCEEDED)
+
+    def test_infinite_request_stream_fake_time(self):
+        rpc = self._fake_time_server.invoke_stream_unary(
+            _application_testing_common.FIRST_SERVICE_STREUN, (),
+            _application_common.INFINITE_REQUEST_STREAM_TIMEOUT)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        initial_metadata = rpc.initial_metadata()
+        self._fake_time.sleep_for(
+            _application_common.INFINITE_REQUEST_STREAM_TIMEOUT * 2)
+        rpc.send_request(_application_common.STREAM_UNARY_REQUEST)
+        response, trailing_metadata, code, details = rpc.termination()
+
+        self.assertIs(code, grpc.StatusCode.DEADLINE_EXCEEDED)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/tests.json b/src/python/grpcio_tests/tests/tests.json
index c10719b86f..8512d5b96f 100644
--- a/src/python/grpcio_tests/tests/tests.json
+++ b/src/python/grpcio_tests/tests/tests.json
@@ -1,15 +1,21 @@
 [
+  "_sanity._sanity_test.SanityTest",
   "health_check._health_servicer_test.HealthServicerTest",
   "interop._insecure_intraop_test.InsecureIntraopTest",
   "interop._secure_intraop_test.SecureIntraopTest",
   "protoc_plugin._python_plugin_test.PythonPluginTest",
-  "protoc_plugin._split_definitions_test.SameCommonTest",
-  "protoc_plugin._split_definitions_test.SameSeparateTest",
-  "protoc_plugin._split_definitions_test.SplitCommonTest",
-  "protoc_plugin._split_definitions_test.SplitSeparateTest",
+  "protoc_plugin._split_definitions_test.SameProtoGrpcBeforeProtoProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SameProtoMid2016ProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SameProtoProtoBeforeGrpcProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SameProtoSingleProtocExecutionProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SplitProtoGrpcBeforeProtoProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SplitProtoMid2016ProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SplitProtoProtoBeforeGrpcProtocStyleTest",
+  "protoc_plugin._split_definitions_test.SplitProtoSingleProtocExecutionProtocStyleTest",
   "protoc_plugin.beta_python_plugin_test.PythonPluginTest",
   "reflection._reflection_servicer_test.ReflectionServicerTest",
   "testing._client_test.ClientTest",
+  "testing._server_test.FirstServiceServicerTest",
   "testing._time_test.StrictFakeTimeTest",
   "testing._time_test.StrictRealTimeTest",
   "unit._api_test.AllTest",
@@ -25,6 +31,8 @@
   "unit._credentials_test.CredentialsTest",
   "unit._cython._cancel_many_calls_test.CancelManyCallsTest",
   "unit._cython._channel_test.ChannelTest",
+  "unit._cython._no_messages_server_completion_queue_per_call_test.Test",
+  "unit._cython._no_messages_single_server_completion_queue_test.Test",
   "unit._cython._read_some_but_not_all_responses_test.ReadSomeButNotAllResponsesTest",
   "unit._cython.cygrpc_test.InsecureServerInsecureClient",
   "unit._cython.cygrpc_test.SecureServerSecureClient",
@@ -38,7 +46,6 @@
   "unit._reconnect_test.ReconnectTest",
   "unit._resource_exhausted_test.ResourceExhaustedTest",
   "unit._rpc_test.RPCTest",
-  "unit._sanity._sanity_test.Sanity",
   "unit._thread_cleanup_test.CleanupThreadTest",
   "unit.beta._beta_features_test.BetaFeaturesTest",
   "unit.beta._beta_features_test.ContextManagementAndLifecycleTest",
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_common.py b/src/python/grpcio_tests/tests/unit/_cython/_common.py
new file mode 100644
index 0000000000..ac66d1db3d
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_cython/_common.py
@@ -0,0 +1,118 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Common utilities for tests of the Cython layer of gRPC Python."""
+
+import collections
+import threading
+
+from grpc._cython import cygrpc
+
+RPC_COUNT = 4000
+
+INFINITE_FUTURE = cygrpc.Timespec(float('+inf'))
+EMPTY_FLAGS = 0
+
+INVOCATION_METADATA = cygrpc.Metadata(
+    (cygrpc.Metadatum(b'client-md-key', b'client-md-key'),
+     cygrpc.Metadatum(b'client-md-key-bin', b'\x00\x01' * 3000),))
+
+INITIAL_METADATA = cygrpc.Metadata(
+    (cygrpc.Metadatum(b'server-initial-md-key', b'server-initial-md-value'),
+     cygrpc.Metadatum(b'server-initial-md-key-bin', b'\x00\x02' * 3000),))
+
+TRAILING_METADATA = cygrpc.Metadata(
+    (cygrpc.Metadatum(b'server-trailing-md-key', b'server-trailing-md-value'),
+     cygrpc.Metadatum(b'server-trailing-md-key-bin', b'\x00\x03' * 3000),))
+
+
+class QueueDriver(object):
+
+    def __init__(self, condition, completion_queue):
+        self._condition = condition
+        self._completion_queue = completion_queue
+        self._due = collections.defaultdict(int)
+        self._events = collections.defaultdict(list)
+
+    def add_due(self, tags):
+        if not self._due:
+
+            def in_thread():
+                while True:
+                    event = self._completion_queue.poll()
+                    with self._condition:
+                        self._events[event.tag].append(event)
+                        self._due[event.tag] -= 1
+                        self._condition.notify_all()
+                        if self._due[event.tag] <= 0:
+                            self._due.pop(event.tag)
+                            if not self._due:
+                                return
+
+            thread = threading.Thread(target=in_thread)
+            thread.start()
+        for tag in tags:
+            self._due[tag] += 1
+
+    def event_with_tag(self, tag):
+        with self._condition:
+            while True:
+                if self._events[tag]:
+                    return self._events[tag].pop(0)
+                else:
+                    self._condition.wait()
+
+
+def execute_many_times(behavior):
+    return tuple(behavior() for _ in range(RPC_COUNT))
+
+
+class OperationResult(
+        collections.namedtuple('OperationResult', (
+            'start_batch_result', 'completion_type', 'success',))):
+    pass
+
+
+SUCCESSFUL_OPERATION_RESULT = OperationResult(
+    cygrpc.CallError.ok, cygrpc.CompletionType.operation_complete, True)
+
+
+class RpcTest(object):
+
+    def setUp(self):
+        self.server_completion_queue = cygrpc.CompletionQueue()
+        self.server = cygrpc.Server(cygrpc.ChannelArgs([]))
+        self.server.register_completion_queue(self.server_completion_queue)
+        port = self.server.add_http2_port(b'[::]:0')
+        self.server.start()
+        self.channel = cygrpc.Channel('localhost:{}'.format(port).encode(),
+                                      cygrpc.ChannelArgs([]))
+
+        self._server_shutdown_tag = 'server_shutdown_tag'
+        self.server_condition = threading.Condition()
+        self.server_driver = QueueDriver(self.server_condition,
+                                         self.server_completion_queue)
+        with self.server_condition:
+            self.server_driver.add_due({
+                self._server_shutdown_tag,
+            })
+
+        self.client_condition = threading.Condition()
+        self.client_completion_queue = cygrpc.CompletionQueue()
+        self.client_driver = QueueDriver(self.client_condition,
+                                         self.client_completion_queue)
+
+    def tearDown(self):
+        self.server.shutdown(self.server_completion_queue,
+                             self._server_shutdown_tag)
+        self.server.cancel_all_calls()
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_no_messages_server_completion_queue_per_call_test.py b/src/python/grpcio_tests/tests/unit/_cython/_no_messages_server_completion_queue_per_call_test.py
new file mode 100644
index 0000000000..14cc66675c
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_cython/_no_messages_server_completion_queue_per_call_test.py
@@ -0,0 +1,131 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Test a corner-case at the level of the Cython API."""
+
+import threading
+import unittest
+
+from grpc._cython import cygrpc
+
+from tests.unit._cython import _common
+
+
+class Test(_common.RpcTest, unittest.TestCase):
+
+    def _do_rpcs(self):
+        server_call_condition = threading.Condition()
+        server_call_completion_queue = cygrpc.CompletionQueue()
+        server_call_driver = _common.QueueDriver(server_call_condition,
+                                                 server_call_completion_queue)
+
+        server_request_call_tag = 'server_request_call_tag'
+        server_send_initial_metadata_tag = 'server_send_initial_metadata_tag'
+        server_complete_rpc_tag = 'server_complete_rpc_tag'
+
+        with self.server_condition:
+            server_request_call_start_batch_result = self.server.request_call(
+                server_call_completion_queue, self.server_completion_queue,
+                server_request_call_tag)
+            self.server_driver.add_due({
+                server_request_call_tag,
+            })
+
+        client_call = self.channel.create_call(
+            None, _common.EMPTY_FLAGS, self.client_completion_queue,
+            b'/twinkies', None, _common.INFINITE_FUTURE)
+        client_receive_initial_metadata_tag = 'client_receive_initial_metadata_tag'
+        client_complete_rpc_tag = 'client_complete_rpc_tag'
+        with self.client_condition:
+            client_receive_initial_metadata_start_batch_result = (
+                client_call.start_client_batch(
+                    cygrpc.Operations([
+                        cygrpc.operation_receive_initial_metadata(
+                            _common.EMPTY_FLAGS),
+                    ]), client_receive_initial_metadata_tag))
+            client_complete_rpc_start_batch_result = client_call.start_client_batch(
+                cygrpc.Operations([
+                    cygrpc.operation_send_initial_metadata(
+                        _common.INVOCATION_METADATA, _common.EMPTY_FLAGS),
+                    cygrpc.operation_send_close_from_client(
+                        _common.EMPTY_FLAGS),
+                    cygrpc.operation_receive_status_on_client(
+                        _common.EMPTY_FLAGS),
+                ]), client_complete_rpc_tag)
+            self.client_driver.add_due({
+                client_receive_initial_metadata_tag,
+                client_complete_rpc_tag,
+            })
+
+        server_request_call_event = self.server_driver.event_with_tag(
+            server_request_call_tag)
+
+        with server_call_condition:
+            server_send_initial_metadata_start_batch_result = (
+                server_request_call_event.operation_call.start_server_batch([
+                    cygrpc.operation_send_initial_metadata(
+                        _common.INITIAL_METADATA, _common.EMPTY_FLAGS),
+                ], server_send_initial_metadata_tag))
+            server_call_driver.add_due({
+                server_send_initial_metadata_tag,
+            })
+        server_send_initial_metadata_event = server_call_driver.event_with_tag(
+            server_send_initial_metadata_tag)
+
+        with server_call_condition:
+            server_complete_rpc_start_batch_result = (
+                server_request_call_event.operation_call.start_server_batch([
+                    cygrpc.operation_receive_close_on_server(
+                        _common.EMPTY_FLAGS),
+                    cygrpc.operation_send_status_from_server(
+                        _common.TRAILING_METADATA, cygrpc.StatusCode.ok,
+                        b'test details', _common.EMPTY_FLAGS),
+                ], server_complete_rpc_tag))
+            server_call_driver.add_due({
+                server_complete_rpc_tag,
+            })
+        server_complete_rpc_event = server_call_driver.event_with_tag(
+            server_complete_rpc_tag)
+
+        client_receive_initial_metadata_event = self.client_driver.event_with_tag(
+            client_receive_initial_metadata_tag)
+        client_complete_rpc_event = self.client_driver.event_with_tag(
+            client_complete_rpc_tag)
+
+        return (_common.OperationResult(server_request_call_start_batch_result,
+                                        server_request_call_event.type,
+                                        server_request_call_event.success),
+                _common.OperationResult(
+                    client_receive_initial_metadata_start_batch_result,
+                    client_receive_initial_metadata_event.type,
+                    client_receive_initial_metadata_event.success),
+                _common.OperationResult(client_complete_rpc_start_batch_result,
+                                        client_complete_rpc_event.type,
+                                        client_complete_rpc_event.success),
+                _common.OperationResult(
+                    server_send_initial_metadata_start_batch_result,
+                    server_send_initial_metadata_event.type,
+                    server_send_initial_metadata_event.success),
+                _common.OperationResult(server_complete_rpc_start_batch_result,
+                                        server_complete_rpc_event.type,
+                                        server_complete_rpc_event.success),)
+
+    def test_rpcs(self):
+        expecteds = [(_common.SUCCESSFUL_OPERATION_RESULT,) *
+                     5] * _common.RPC_COUNT
+        actuallys = _common.execute_many_times(self._do_rpcs)
+        self.assertSequenceEqual(expecteds, actuallys)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_no_messages_single_server_completion_queue_test.py b/src/python/grpcio_tests/tests/unit/_cython/_no_messages_single_server_completion_queue_test.py
new file mode 100644
index 0000000000..1e44bcc4dc
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_cython/_no_messages_single_server_completion_queue_test.py
@@ -0,0 +1,126 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Test a corner-case at the level of the Cython API."""
+
+import threading
+import unittest
+
+from grpc._cython import cygrpc
+
+from tests.unit._cython import _common
+
+
+class Test(_common.RpcTest, unittest.TestCase):
+
+    def _do_rpcs(self):
+        server_request_call_tag = 'server_request_call_tag'
+        server_send_initial_metadata_tag = 'server_send_initial_metadata_tag'
+        server_complete_rpc_tag = 'server_complete_rpc_tag'
+
+        with self.server_condition:
+            server_request_call_start_batch_result = self.server.request_call(
+                self.server_completion_queue, self.server_completion_queue,
+                server_request_call_tag)
+            self.server_driver.add_due({
+                server_request_call_tag,
+            })
+
+        client_call = self.channel.create_call(
+            None, _common.EMPTY_FLAGS, self.client_completion_queue,
+            b'/twinkies', None, _common.INFINITE_FUTURE)
+        client_receive_initial_metadata_tag = 'client_receive_initial_metadata_tag'
+        client_complete_rpc_tag = 'client_complete_rpc_tag'
+        with self.client_condition:
+            client_receive_initial_metadata_start_batch_result = (
+                client_call.start_client_batch(
+                    cygrpc.Operations([
+                        cygrpc.operation_receive_initial_metadata(
+                            _common.EMPTY_FLAGS),
+                    ]), client_receive_initial_metadata_tag))
+            client_complete_rpc_start_batch_result = client_call.start_client_batch(
+                cygrpc.Operations([
+                    cygrpc.operation_send_initial_metadata(
+                        _common.INVOCATION_METADATA, _common.EMPTY_FLAGS),
+                    cygrpc.operation_send_close_from_client(
+                        _common.EMPTY_FLAGS),
+                    cygrpc.operation_receive_status_on_client(
+                        _common.EMPTY_FLAGS),
+                ]), client_complete_rpc_tag)
+            self.client_driver.add_due({
+                client_receive_initial_metadata_tag,
+                client_complete_rpc_tag,
+            })
+
+        server_request_call_event = self.server_driver.event_with_tag(
+            server_request_call_tag)
+
+        with self.server_condition:
+            server_send_initial_metadata_start_batch_result = (
+                server_request_call_event.operation_call.start_server_batch([
+                    cygrpc.operation_send_initial_metadata(
+                        _common.INITIAL_METADATA, _common.EMPTY_FLAGS),
+                ], server_send_initial_metadata_tag))
+            self.server_driver.add_due({
+                server_send_initial_metadata_tag,
+            })
+        server_send_initial_metadata_event = self.server_driver.event_with_tag(
+            server_send_initial_metadata_tag)
+
+        with self.server_condition:
+            server_complete_rpc_start_batch_result = (
+                server_request_call_event.operation_call.start_server_batch([
+                    cygrpc.operation_receive_close_on_server(
+                        _common.EMPTY_FLAGS),
+                    cygrpc.operation_send_status_from_server(
+                        _common.TRAILING_METADATA, cygrpc.StatusCode.ok,
+                        b'test details', _common.EMPTY_FLAGS),
+                ], server_complete_rpc_tag))
+            self.server_driver.add_due({
+                server_complete_rpc_tag,
+            })
+        server_complete_rpc_event = self.server_driver.event_with_tag(
+            server_complete_rpc_tag)
+
+        client_receive_initial_metadata_event = self.client_driver.event_with_tag(
+            client_receive_initial_metadata_tag)
+        client_complete_rpc_event = self.client_driver.event_with_tag(
+            client_complete_rpc_tag)
+
+        return (_common.OperationResult(server_request_call_start_batch_result,
+                                        server_request_call_event.type,
+                                        server_request_call_event.success),
+                _common.OperationResult(
+                    client_receive_initial_metadata_start_batch_result,
+                    client_receive_initial_metadata_event.type,
+                    client_receive_initial_metadata_event.success),
+                _common.OperationResult(client_complete_rpc_start_batch_result,
+                                        client_complete_rpc_event.type,
+                                        client_complete_rpc_event.success),
+                _common.OperationResult(
+                    server_send_initial_metadata_start_batch_result,
+                    server_send_initial_metadata_event.type,
+                    server_send_initial_metadata_event.success),
+                _common.OperationResult(server_complete_rpc_start_batch_result,
+                                        server_complete_rpc_event.type,
+                                        server_complete_rpc_event.success),)
+
+    def test_rpcs(self):
+        expecteds = [(_common.SUCCESSFUL_OPERATION_RESULT,) *
+                     5] * _common.RPC_COUNT
+        actuallys = _common.execute_many_times(self._do_rpcs)
+        self.assertSequenceEqual(expecteds, actuallys)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/src/ruby/.rubocop_todo.yml b/src/ruby/.rubocop_todo.yml
index 05db404582..32b84b8de0 100644
--- a/src/ruby/.rubocop_todo.yml
+++ b/src/ruby/.rubocop_todo.yml
@@ -1,44 +1,569 @@
-# This configuration was generated by `rubocop --auto-gen-config`
-# on 2015-05-22 13:23:34 -0700 using RuboCop version 0.30.1.
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2017-09-04 17:00:36 +0200 using RuboCop version 0.49.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 30
-Metrics/AbcSize:
-  Max: 38
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, IndentOneStep, IndentationWidth.
+# SupportedStyles: case, end
+Layout/CaseIndentation:
+  Exclude:
+    - 'tools/platform_check.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/CommentIndentation:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterMagicComment:
+  Exclude:
+    - 'tools/grpc-tools.gemspec'
+
+# Offense count: 33
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+Layout/EmptyLineBetweenDefs:
+  Exclude:
+    - 'qps/client.rb'
+    - 'qps/histogram.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/server.rb'
+    - 'qps/worker.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/EmptyLines:
+  Exclude:
+    - 'qps/qps-common.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+Layout/EmptyLinesAroundClassBody:
+  Exclude:
+    - 'pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb'
+    - 'pb/grpc/testing/metrics_services_pb.rb'
+    - 'pb/src/proto/grpc/testing/test_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/services_services_pb.rb'
+
+# Offense count: 28
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment, ForceEqualSignAlignment.
+Layout/ExtraSpacing:
+  Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: normal, rails
+Layout/IndentationConsistency:
+  Exclude:
+    - 'pb/grpc/health/checker.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: Width, IgnoredPatterns.
+Layout/IndentationWidth:
+  Exclude:
+    - 'pb/grpc/health/checker.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: symmetrical, new_line, same_line
+Layout/MultilineHashBraceLayout:
+  Exclude:
+    - 'spec/generic/active_call_spec.rb'
+
+# Offense count: 70
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: symmetrical, new_line, same_line
+Layout/MultilineMethodCallBraceLayout:
+  Enabled: false
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, IndentationWidth.
+# SupportedStyles: aligned, indented, indented_relative_to_receiver
+Layout/MultilineMethodCallIndentation:
+  Exclude:
+    - 'spec/generic/rpc_desc_spec.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: symmetrical, new_line, same_line
+Layout/MultilineMethodDefinitionBraceLayout:
+  Exclude:
+    - 'spec/generic/client_stub_spec.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+Layout/SpaceAfterColon:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+
+# Offense count: 7
+# Cop supports --auto-correct.
+Layout/SpaceAfterComma:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 27
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment.
+Layout/SpaceAroundOperators:
+  Exclude:
+    - 'qps/client.rb'
+    - 'qps/histogram.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/server.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/rpc_server_spec.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SupportedStylesForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+  Exclude:
+    - 'stress/stress_client.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+Layout/SpaceInsideBrackets:
+  Exclude:
+    - 'tools/bin/grpc_tools_ruby_protoc'
+    - 'tools/bin/grpc_tools_ruby_protoc_plugin'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SupportedStylesForEmptyBraces.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideHashLiteralBraces:
+  Exclude:
+    - 'qps/server.rb'
+
+# Offense count: 6
+# Cop supports --auto-correct.
+Layout/SpaceInsidePercentLiteralDelimiters:
+  Exclude:
+    - 'spec/generic/client_stub_spec.rb'
+    - 'tools/grpc-tools.gemspec'
 
 # Offense count: 3
-# Configuration parameters: CountComments.
-Metrics/ClassLength:
-  Max: 200
+# Cop supports --auto-correct.
+Layout/Tab:
+  Exclude:
+    - 'pb/grpc/health/checker.rb'
+    - 'qps/client.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/TrailingWhitespace:
+  Exclude:
+    - 'qps/worker.rb'
+
+# Offense count: 1
+Lint/IneffectiveAccessModifier:
+  Exclude:
+    - 'lib/grpc/generic/active_call.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+Lint/PercentStringArray:
+  Exclude:
+    - 'spec/client_server_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+
+# Offense count: 4
+Lint/ScriptPermission:
+  Exclude:
+    - 'qps/client.rb'
+    - 'qps/histogram.rb'
+    - 'qps/qps-common.rb'
+    - 'qps/server.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
+Lint/UnusedBlockArgument:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
+Lint/UnusedMethodArgument:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 1
+# Configuration parameters: ContextCreatingMethods, MethodCreatingMethods.
+Lint/UselessAccessModifier:
+  Exclude:
+    - 'lib/grpc/logconfig.rb'
+
+# Offense count: 1
+Lint/UselessAssignment:
+  Exclude:
+    - 'qps/client.rb'
 
-# Offense count: 35
+# Offense count: 4
+Lint/Void:
+  Exclude:
+    - 'stress/metrics_server.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 53
+Metrics/AbcSize:
+  Max: 57
+
+# Offense count: 81
+# Configuration parameters: CountComments, ExcludedMethods.
+Metrics/BlockLength:
+  Max: 715
+
+# Offense count: 82
+# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
+# URISchemes: http, https
+Metrics/LineLength:
+  Max: 141
+
+# Offense count: 82
 # Configuration parameters: CountComments.
 Metrics/MethodLength:
-  Max: 36
+  Max: 54
 
-# Offense count: 7
+# Offense count: 5
 # Configuration parameters: CountKeywordArgs.
 Metrics/ParameterLists:
-  Max: 8
+  Max: 7
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Performance/RedundantBlockCall:
+  Exclude:
+    - 'spec/generic/client_stub_spec.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: MaxKeyValuePairs.
+Performance/RedundantMerge:
+  Exclude:
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+Performance/TimesMap:
+  Exclude:
+    - 'spec/channel_spec.rb'
+    - 'spec/client_server_spec.rb'
+    - 'spec/server_spec.rb'
+
+# Offense count: 7
+Style/AccessorMethodName:
+  Exclude:
+    - 'qps/server.rb'
+    - 'stress/metrics_server.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: prefer_alias, prefer_alias_method
+Style/Alias:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'lib/grpc/notifier.rb'
+
+# Offense count: 7
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, ProceduralMethods, FunctionalMethods, IgnoredMethods.
+# SupportedStyles: line_count_based, semantic, braces_for_chaining
+# ProceduralMethods: benchmark, bm, bmbm, create, each_with_object, measure, new, realtime, tap, with_object
+# FunctionalMethods: let, let!, subject, watch
+# IgnoredMethods: lambda, proc, it
+Style/BlockDelimiters:
+  Exclude:
+    - 'qps/client.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/server.rb'
+    - 'qps/worker.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/ClassMethods:
+  Exclude:
+    - 'tools/platform_check.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, SingleLineConditionsOnly, IncludeTernaryExpressions.
+# SupportedStyles: assign_to_condition, assign_inside_condition
+Style/ConditionalAssignment:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'lib/grpc/generic/service.rb'
+
+# Offense count: 19
+Style/Documentation:
+  Exclude:
+    - 'spec/**/*'
+    - 'test/**/*'
+    - 'pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb'
+    - 'pb/grpc/testing/metrics_services_pb.rb'
+    - 'pb/src/proto/grpc/testing/test_pb.rb'
+    - 'qps/client.rb'
+    - 'qps/histogram.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/server.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/services_pb.rb'
+    - 'qps/src/proto/grpc/testing/services_services_pb.rb'
+    - 'qps/worker.rb'
+    - 'stress/metrics_server.rb'
+    - 'stress/stress_client.rb'
+    - 'tools/platform_check.rb'
 
-# Offense count: 9
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: compact, expanded
+Style/EmptyMethod:
+  Exclude:
+    - 'bin/noproto_server.rb'
+    - 'lib/grpc/logconfig.rb'
+    - 'spec/generic/rpc_desc_spec.rb'
+
+# Offense count: 2
+# Configuration parameters: ExpectMatchingDefinition, Regex, IgnoreExecutableScripts, AllowedAcronyms.
+# AllowedAcronyms: CLI, DSL, ACL, API, ASCII, CPU, CSS, DNS, EOF, GUID, HTML, HTTP, HTTPS, ID, IP, JSON, LHS, QPS, RAM, RHS, RPC, SLA, SMTP, SQL, SSH, TCP, TLS, TTL, UDP, UI, UID, UUID, URI, URL, UTF8, VM, XML, XMPP, XSRF, XSS
+Style/FileName:
+  Exclude:
+    - 'qps/src/proto/grpc/testing/proxy-service_pb.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
+
+# Offense count: 12
 # Configuration parameters: AllowedVariables.
 Style/GlobalVars:
-  Enabled: false
+  Exclude:
+    - 'ext/grpc/extconf.rb'
+
+# Offense count: 3
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+  Exclude:
+    - 'lib/grpc/generic/bidi_call.rb'
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'qps/client.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+Style/HashSyntax:
+  Exclude:
+    - 'stress/metrics_server.rb'
+
+# Offense count: 1
+Style/IfInsideElse:
+  Exclude:
+    - 'lib/grpc/generic/rpc_desc.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: MaxLineLength.
+Style/IfUnlessModifier:
+  Exclude:
+    - 'ext/grpc/extconf.rb'
+    - 'qps/histogram.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/MethodCallWithoutArgsParentheses:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+Style/MultilineIfModifier:
+  Exclude:
+    - 'lib/grpc/generic/bidi_call.rb'
+    - 'lib/grpc/generic/client_stub.rb'
+    - 'spec/spec_helper.rb'
+
+# Offense count: 7
+# Cop supports --auto-correct.
+Style/MutableConstant:
+  Exclude:
+    - 'ext/grpc/extconf.rb'
+    - 'lib/grpc/version.rb'
+    - 'spec/compression_options_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'tools/version.rb'
 
 # Offense count: 1
-# Configuration parameters: EnforcedStyle, MinBodyLength, SupportedStyles.
-Style/Next:
+# Cop supports --auto-correct.
+Style/NegatedWhile:
+  Exclude:
+    - 'qps/client.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, EnforcedStyle, SupportedStyles.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+  Exclude:
+    - 'spec/**/*'
+    - 'ext/grpc/extconf.rb'
+
+# Offense count: 7
+# Cop supports --auto-correct.
+Style/ParallelAssignment:
+  Exclude:
+    - 'bin/math_server.rb'
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'spec/generic/rpc_desc_spec.rb'
+    - 'spec/generic/rpc_server_pool_spec.rb'
+    - 'spec/generic/rpc_server_spec.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: PreferredDelimiters.
+Style/PercentLiteralDelimiters:
+  Exclude:
+    - 'end2end/grpc_class_init_driver.rb'
+    - 'spec/client_server_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'tools/grpc-tools.gemspec'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: compact, exploded
+Style/RaiseArgs:
+  Exclude:
+    - 'stress/metrics_server.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+Style/RedundantParentheses:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'qps/client.rb'
+    - 'qps/proxy-worker.rb'
+    - 'spec/generic/rpc_desc_spec.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleReturnValues.
+Style/RedundantReturn:
+  Exclude:
+    - 'end2end/grpc_class_init_client.rb'
+
+# Offense count: 77
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: only_raise, only_fail, semantic
+Style/SignalException:
   Enabled: false
 
 # Offense count: 2
-# Configuration parameters: Methods.
-Style/SingleLineBlockParams:
-  Enabled: false
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles.
+# SupportedStyles: use_perl_names, use_english_names
+Style/SpecialGlobalVars:
+  Exclude:
+    - 'ext/grpc/extconf.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 189
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SupportedStyles, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+  Exclude:
+    - 'pb/grpc/testing/metrics_pb.rb'
+    - 'pb/src/proto/grpc/testing/empty_pb.rb'
+    - 'pb/src/proto/grpc/testing/messages_pb.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/server.rb'
+    - 'qps/src/proto/grpc/testing/control_pb.rb'
+    - 'qps/src/proto/grpc/testing/messages_pb.rb'
+    - 'qps/src/proto/grpc/testing/payloads_pb.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_pb.rb'
+    - 'qps/src/proto/grpc/testing/stats_pb.rb'
+    - 'qps/worker.rb'
 
 # Offense count: 1
 Style/StructInheritance:
-  Enabled: false
+  Exclude:
+    - 'lib/grpc/generic/rpc_desc.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+# Configuration parameters: MinSize, SupportedStyles.
+# SupportedStyles: percent, brackets
+Style/SymbolArray:
+  EnforcedStyle: brackets
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoredMethods.
+# IgnoredMethods: respond_to, define_method
+Style/SymbolProc:
+  Exclude:
+    - 'qps/client.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 6
+# Cop supports --auto-correct.
+# Configuration parameters: AllowNamedUnderscoreVariables.
+Style/TrailingUnderscoreVariable:
+  Exclude:
+    - 'spec/channel_credentials_spec.rb'
+    - 'spec/server_credentials_spec.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: ExactNameMatch, AllowPredicates, AllowDSLWriters, IgnoreClassMethods, Whitelist.
+# Whitelist: to_ary, to_a, to_c, to_enum, to_h, to_hash, to_i, to_int, to_io, to_open, to_path, to_proc, to_r, to_regexp, to_str, to_s, to_sym
+Style/TrivialAccessors:
+  Exclude:
+    - 'qps/histogram.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+Style/UnneededInterpolation:
+  Exclude:
+    - 'pb/grpc/health/checker.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/YodaCondition:
+  Exclude:
+    - 'stress/stress_client.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/ZeroLengthPredicate:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
diff --git a/src/ruby/end2end/grpc_class_init_client.rb b/src/ruby/end2end/grpc_class_init_client.rb
index b9e3d6054f..c35719a71f 100755
--- a/src/ruby/end2end/grpc_class_init_client.rb
+++ b/src/ruby/end2end/grpc_class_init_client.rb
@@ -41,7 +41,7 @@ def run_gc_stress_test(test_proc)
   GC.enable
   construct_many(test_proc)
 
-  GC.start(full_mark: true, immediate_sweep: true)
+  GC.start
   construct_many(test_proc)
 end
 
diff --git a/src/ruby/end2end/killed_client_thread_client.rb b/src/ruby/end2end/killed_client_thread_client.rb
index 7d6ed8c8d7..493c0eb56a 100755
--- a/src/ruby/end2end/killed_client_thread_client.rb
+++ b/src/ruby/end2end/killed_client_thread_client.rb
@@ -35,7 +35,7 @@ def main
                                       :this_channel_is_insecure)
     stub.echo(Echo::EchoRequest.new(request: 'hello'))
     fail 'the clients rpc in this test shouldnt complete. ' \
-      'expecting SIGINT to happen in the middle of the call'
+      'expecting SIGTERM to happen in the middle of the call'
   end
   thd.join
 end
diff --git a/src/ruby/end2end/killed_client_thread_driver.rb b/src/ruby/end2end/killed_client_thread_driver.rb
index 09f05a4487..fce5d13e82 100755
--- a/src/ruby/end2end/killed_client_thread_driver.rb
+++ b/src/ruby/end2end/killed_client_thread_driver.rb
@@ -69,9 +69,9 @@ def main
     call_started_cv.wait(call_started_mu) until call_started.val
   end
 
-  # SIGINT the child process now that it's
+  # SIGTERM the child process now that it's
   # in the middle of an RPC (happening on a non-main thread)
-  Process.kill('SIGINT', client_pid)
+  Process.kill('SIGTERM', client_pid)
   STDERR.puts 'sent shutdown'
 
   begin
@@ -88,8 +88,8 @@ def main
   end
 
   client_exit_code = $CHILD_STATUS
-  if client_exit_code.termsig != 2 # SIGINT
-    fail 'expected client exit from SIGINT ' \
+  if client_exit_code.termsig != 15 # SIGTERM
+    fail 'expected client exit from SIGTERM ' \
       "but got child status: #{client_exit_code}"
   end
 
diff --git a/src/ruby/ext/grpc/rb_call.c b/src/ruby/ext/grpc/rb_call.c
index 74f189e1e0..5550bb7d5f 100644
--- a/src/ruby/ext/grpc/rb_call.c
+++ b/src/ruby/ext/grpc/rb_call.c
@@ -905,6 +905,9 @@ static void Init_grpc_error_codes() {
   rb_define_const(grpc_rb_mRpcErrors, "INVALID_FLAGS",
                   UINT2NUM(GRPC_CALL_ERROR_INVALID_FLAGS));
 
+  /* Hint the GC that this is a global and shouldn't be sweeped. */
+  rb_global_variable(&rb_error_code_details);
+
   /* Add the detail strings to a Hash */
   rb_error_code_details = rb_hash_new();
   rb_hash_aset(rb_error_code_details, UINT2NUM(GRPC_CALL_OK),
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index e83c38841b..70831494fa 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -22,16 +22,6 @@
 
 #include "rb_grpc_imports.generated.h"
 
-grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
-grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
-grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
-grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
-grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
-grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
-grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
-grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
-grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
-grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
 census_initialize_type census_initialize_import;
 census_shutdown_type census_shutdown_import;
 census_supported_type census_supported_import;
@@ -62,11 +52,14 @@ census_resource_id_type census_resource_id_import;
 census_record_values_type census_record_values_import;
 grpc_compression_algorithm_parse_type grpc_compression_algorithm_parse_import;
 grpc_compression_algorithm_name_type grpc_compression_algorithm_name_import;
+grpc_stream_compression_algorithm_name_type grpc_stream_compression_algorithm_name_import;
 grpc_compression_algorithm_for_level_type grpc_compression_algorithm_for_level_import;
+grpc_stream_compression_algorithm_for_level_type grpc_stream_compression_algorithm_for_level_import;
 grpc_compression_options_init_type grpc_compression_options_init_import;
 grpc_compression_options_enable_algorithm_type grpc_compression_options_enable_algorithm_import;
 grpc_compression_options_disable_algorithm_type grpc_compression_options_disable_algorithm_import;
 grpc_compression_options_is_algorithm_enabled_type grpc_compression_options_is_algorithm_enabled_import;
+grpc_compression_options_is_stream_compression_algorithm_enabled_type grpc_compression_options_is_stream_compression_algorithm_enabled_import;
 grpc_metadata_array_init_type grpc_metadata_array_init_import;
 grpc_metadata_array_destroy_type grpc_metadata_array_destroy_import;
 grpc_call_details_init_type grpc_call_details_init_import;
@@ -85,11 +78,13 @@ grpc_completion_queue_pluck_type grpc_completion_queue_pluck_import;
 grpc_completion_queue_shutdown_type grpc_completion_queue_shutdown_import;
 grpc_completion_queue_destroy_type grpc_completion_queue_destroy_import;
 grpc_alarm_create_type grpc_alarm_create_import;
+grpc_alarm_set_type grpc_alarm_set_import;
 grpc_alarm_cancel_type grpc_alarm_cancel_import;
 grpc_alarm_destroy_type grpc_alarm_destroy_import;
 grpc_channel_check_connectivity_state_type grpc_channel_check_connectivity_state_import;
 grpc_channel_num_external_connectivity_watchers_type grpc_channel_num_external_connectivity_watchers_import;
 grpc_channel_watch_connectivity_state_type grpc_channel_watch_connectivity_state_import;
+grpc_channel_support_connectivity_watcher_type grpc_channel_support_connectivity_watcher_import;
 grpc_channel_create_call_type grpc_channel_create_call_import;
 grpc_channel_ping_type grpc_channel_ping_import;
 grpc_channel_register_call_type grpc_channel_register_call_import;
@@ -163,6 +158,16 @@ grpc_ssl_server_credentials_create_ex_type grpc_ssl_server_credentials_create_ex
 grpc_server_add_secure_http2_port_type grpc_server_add_secure_http2_port_import;
 grpc_call_set_credentials_type grpc_call_set_credentials_import;
 grpc_server_credentials_set_auth_metadata_processor_type grpc_server_credentials_set_auth_metadata_processor_import;
+grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
+grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
+grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
+grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
+grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
+grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
+grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
+grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
+grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
+grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
 grpc_slice_ref_type grpc_slice_ref_import;
 grpc_slice_unref_type grpc_slice_unref_import;
 grpc_slice_copy_type grpc_slice_copy_import;
@@ -325,16 +330,6 @@ gpr_sleep_until_type gpr_sleep_until_import;
 gpr_timespec_to_micros_type gpr_timespec_to_micros_import;
 
 void grpc_rb_load_imports(HMODULE library) {
-  grpc_raw_byte_buffer_create_import = (grpc_raw_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_byte_buffer_create");
-  grpc_raw_compressed_byte_buffer_create_import = (grpc_raw_compressed_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_compressed_byte_buffer_create");
-  grpc_byte_buffer_copy_import = (grpc_byte_buffer_copy_type) GetProcAddress(library, "grpc_byte_buffer_copy");
-  grpc_byte_buffer_length_import = (grpc_byte_buffer_length_type) GetProcAddress(library, "grpc_byte_buffer_length");
-  grpc_byte_buffer_destroy_import = (grpc_byte_buffer_destroy_type) GetProcAddress(library, "grpc_byte_buffer_destroy");
-  grpc_byte_buffer_reader_init_import = (grpc_byte_buffer_reader_init_type) GetProcAddress(library, "grpc_byte_buffer_reader_init");
-  grpc_byte_buffer_reader_destroy_import = (grpc_byte_buffer_reader_destroy_type) GetProcAddress(library, "grpc_byte_buffer_reader_destroy");
-  grpc_byte_buffer_reader_next_import = (grpc_byte_buffer_reader_next_type) GetProcAddress(library, "grpc_byte_buffer_reader_next");
-  grpc_byte_buffer_reader_readall_import = (grpc_byte_buffer_reader_readall_type) GetProcAddress(library, "grpc_byte_buffer_reader_readall");
-  grpc_raw_byte_buffer_from_reader_import = (grpc_raw_byte_buffer_from_reader_type) GetProcAddress(library, "grpc_raw_byte_buffer_from_reader");
   census_initialize_import = (census_initialize_type) GetProcAddress(library, "census_initialize");
   census_shutdown_import = (census_shutdown_type) GetProcAddress(library, "census_shutdown");
   census_supported_import = (census_supported_type) GetProcAddress(library, "census_supported");
@@ -365,11 +360,14 @@ void grpc_rb_load_imports(HMODULE library) {
   census_record_values_import = (census_record_values_type) GetProcAddress(library, "census_record_values");
   grpc_compression_algorithm_parse_import = (grpc_compression_algorithm_parse_type) GetProcAddress(library, "grpc_compression_algorithm_parse");
   grpc_compression_algorithm_name_import = (grpc_compression_algorithm_name_type) GetProcAddress(library, "grpc_compression_algorithm_name");
+  grpc_stream_compression_algorithm_name_import = (grpc_stream_compression_algorithm_name_type) GetProcAddress(library, "grpc_stream_compression_algorithm_name");
   grpc_compression_algorithm_for_level_import = (grpc_compression_algorithm_for_level_type) GetProcAddress(library, "grpc_compression_algorithm_for_level");
+  grpc_stream_compression_algorithm_for_level_import = (grpc_stream_compression_algorithm_for_level_type) GetProcAddress(library, "grpc_stream_compression_algorithm_for_level");
   grpc_compression_options_init_import = (grpc_compression_options_init_type) GetProcAddress(library, "grpc_compression_options_init");
   grpc_compression_options_enable_algorithm_import = (grpc_compression_options_enable_algorithm_type) GetProcAddress(library, "grpc_compression_options_enable_algorithm");
   grpc_compression_options_disable_algorithm_import = (grpc_compression_options_disable_algorithm_type) GetProcAddress(library, "grpc_compression_options_disable_algorithm");
   grpc_compression_options_is_algorithm_enabled_import = (grpc_compression_options_is_algorithm_enabled_type) GetProcAddress(library, "grpc_compression_options_is_algorithm_enabled");
+  grpc_compression_options_is_stream_compression_algorithm_enabled_import = (grpc_compression_options_is_stream_compression_algorithm_enabled_type) GetProcAddress(library, "grpc_compression_options_is_stream_compression_algorithm_enabled");
   grpc_metadata_array_init_import = (grpc_metadata_array_init_type) GetProcAddress(library, "grpc_metadata_array_init");
   grpc_metadata_array_destroy_import = (grpc_metadata_array_destroy_type) GetProcAddress(library, "grpc_metadata_array_destroy");
   grpc_call_details_init_import = (grpc_call_details_init_type) GetProcAddress(library, "grpc_call_details_init");
@@ -388,11 +386,13 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_completion_queue_shutdown_import = (grpc_completion_queue_shutdown_type) GetProcAddress(library, "grpc_completion_queue_shutdown");
   grpc_completion_queue_destroy_import = (grpc_completion_queue_destroy_type) GetProcAddress(library, "grpc_completion_queue_destroy");
   grpc_alarm_create_import = (grpc_alarm_create_type) GetProcAddress(library, "grpc_alarm_create");
+  grpc_alarm_set_import = (grpc_alarm_set_type) GetProcAddress(library, "grpc_alarm_set");
   grpc_alarm_cancel_import = (grpc_alarm_cancel_type) GetProcAddress(library, "grpc_alarm_cancel");
   grpc_alarm_destroy_import = (grpc_alarm_destroy_type) GetProcAddress(library, "grpc_alarm_destroy");
   grpc_channel_check_connectivity_state_import = (grpc_channel_check_connectivity_state_type) GetProcAddress(library, "grpc_channel_check_connectivity_state");
   grpc_channel_num_external_connectivity_watchers_import = (grpc_channel_num_external_connectivity_watchers_type) GetProcAddress(library, "grpc_channel_num_external_connectivity_watchers");
   grpc_channel_watch_connectivity_state_import = (grpc_channel_watch_connectivity_state_type) GetProcAddress(library, "grpc_channel_watch_connectivity_state");
+  grpc_channel_support_connectivity_watcher_import = (grpc_channel_support_connectivity_watcher_type) GetProcAddress(library, "grpc_channel_support_connectivity_watcher");
   grpc_channel_create_call_import = (grpc_channel_create_call_type) GetProcAddress(library, "grpc_channel_create_call");
   grpc_channel_ping_import = (grpc_channel_ping_type) GetProcAddress(library, "grpc_channel_ping");
   grpc_channel_register_call_import = (grpc_channel_register_call_type) GetProcAddress(library, "grpc_channel_register_call");
@@ -466,6 +466,16 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_server_add_secure_http2_port_import = (grpc_server_add_secure_http2_port_type) GetProcAddress(library, "grpc_server_add_secure_http2_port");
   grpc_call_set_credentials_import = (grpc_call_set_credentials_type) GetProcAddress(library, "grpc_call_set_credentials");
   grpc_server_credentials_set_auth_metadata_processor_import = (grpc_server_credentials_set_auth_metadata_processor_type) GetProcAddress(library, "grpc_server_credentials_set_auth_metadata_processor");
+  grpc_raw_byte_buffer_create_import = (grpc_raw_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_byte_buffer_create");
+  grpc_raw_compressed_byte_buffer_create_import = (grpc_raw_compressed_byte_buffer_create_type) GetProcAddress(library, "grpc_raw_compressed_byte_buffer_create");
+  grpc_byte_buffer_copy_import = (grpc_byte_buffer_copy_type) GetProcAddress(library, "grpc_byte_buffer_copy");
+  grpc_byte_buffer_length_import = (grpc_byte_buffer_length_type) GetProcAddress(library, "grpc_byte_buffer_length");
+  grpc_byte_buffer_destroy_import = (grpc_byte_buffer_destroy_type) GetProcAddress(library, "grpc_byte_buffer_destroy");
+  grpc_byte_buffer_reader_init_import = (grpc_byte_buffer_reader_init_type) GetProcAddress(library, "grpc_byte_buffer_reader_init");
+  grpc_byte_buffer_reader_destroy_import = (grpc_byte_buffer_reader_destroy_type) GetProcAddress(library, "grpc_byte_buffer_reader_destroy");
+  grpc_byte_buffer_reader_next_import = (grpc_byte_buffer_reader_next_type) GetProcAddress(library, "grpc_byte_buffer_reader_next");
+  grpc_byte_buffer_reader_readall_import = (grpc_byte_buffer_reader_readall_type) GetProcAddress(library, "grpc_byte_buffer_reader_readall");
+  grpc_raw_byte_buffer_from_reader_import = (grpc_raw_byte_buffer_from_reader_type) GetProcAddress(library, "grpc_raw_byte_buffer_from_reader");
   grpc_slice_ref_import = (grpc_slice_ref_type) GetProcAddress(library, "grpc_slice_ref");
   grpc_slice_unref_import = (grpc_slice_unref_type) GetProcAddress(library, "grpc_slice_unref");
   grpc_slice_copy_import = (grpc_slice_copy_type) GetProcAddress(library, "grpc_slice_copy");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index 5288704350..868772cfc8 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -25,12 +25,12 @@
 
 #include <windows.h>
 
-#include <grpc/byte_buffer.h>
 #include <grpc/census.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
 #include <grpc/grpc_posix.h>
 #include <grpc/grpc_security.h>
+#include <grpc/impl/codegen/byte_buffer.h>
 #include <grpc/slice.h>
 #include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
@@ -47,36 +47,6 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 
-typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_create_type)(grpc_slice *slices, size_t nslices);
-extern grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
-#define grpc_raw_byte_buffer_create grpc_raw_byte_buffer_create_import
-typedef grpc_byte_buffer *(*grpc_raw_compressed_byte_buffer_create_type)(grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
-extern grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
-#define grpc_raw_compressed_byte_buffer_create grpc_raw_compressed_byte_buffer_create_import
-typedef grpc_byte_buffer *(*grpc_byte_buffer_copy_type)(grpc_byte_buffer *bb);
-extern grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
-#define grpc_byte_buffer_copy grpc_byte_buffer_copy_import
-typedef size_t(*grpc_byte_buffer_length_type)(grpc_byte_buffer *bb);
-extern grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
-#define grpc_byte_buffer_length grpc_byte_buffer_length_import
-typedef void(*grpc_byte_buffer_destroy_type)(grpc_byte_buffer *byte_buffer);
-extern grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
-#define grpc_byte_buffer_destroy grpc_byte_buffer_destroy_import
-typedef int(*grpc_byte_buffer_reader_init_type)(grpc_byte_buffer_reader *reader, grpc_byte_buffer *buffer);
-extern grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
-#define grpc_byte_buffer_reader_init grpc_byte_buffer_reader_init_import
-typedef void(*grpc_byte_buffer_reader_destroy_type)(grpc_byte_buffer_reader *reader);
-extern grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
-#define grpc_byte_buffer_reader_destroy grpc_byte_buffer_reader_destroy_import
-typedef int(*grpc_byte_buffer_reader_next_type)(grpc_byte_buffer_reader *reader, grpc_slice *slice);
-extern grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
-#define grpc_byte_buffer_reader_next grpc_byte_buffer_reader_next_import
-typedef grpc_slice(*grpc_byte_buffer_reader_readall_type)(grpc_byte_buffer_reader *reader);
-extern grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
-#define grpc_byte_buffer_reader_readall grpc_byte_buffer_reader_readall_import
-typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_from_reader_type)(grpc_byte_buffer_reader *reader);
-extern grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
-#define grpc_raw_byte_buffer_from_reader grpc_raw_byte_buffer_from_reader_import
 typedef int(*census_initialize_type)(int features);
 extern census_initialize_type census_initialize_import;
 #define census_initialize census_initialize_import
@@ -164,12 +134,18 @@ extern census_record_values_type census_record_values_import;
 typedef int(*grpc_compression_algorithm_parse_type)(grpc_slice value, grpc_compression_algorithm *algorithm);
 extern grpc_compression_algorithm_parse_type grpc_compression_algorithm_parse_import;
 #define grpc_compression_algorithm_parse grpc_compression_algorithm_parse_import
-typedef int(*grpc_compression_algorithm_name_type)(grpc_compression_algorithm algorithm, char **name);
+typedef int(*grpc_compression_algorithm_name_type)(grpc_compression_algorithm algorithm, const char **name);
 extern grpc_compression_algorithm_name_type grpc_compression_algorithm_name_import;
 #define grpc_compression_algorithm_name grpc_compression_algorithm_name_import
+typedef int(*grpc_stream_compression_algorithm_name_type)(grpc_stream_compression_algorithm algorithm, const char **name);
+extern grpc_stream_compression_algorithm_name_type grpc_stream_compression_algorithm_name_import;
+#define grpc_stream_compression_algorithm_name grpc_stream_compression_algorithm_name_import
 typedef grpc_compression_algorithm(*grpc_compression_algorithm_for_level_type)(grpc_compression_level level, uint32_t accepted_encodings);
 extern grpc_compression_algorithm_for_level_type grpc_compression_algorithm_for_level_import;
 #define grpc_compression_algorithm_for_level grpc_compression_algorithm_for_level_import
+typedef grpc_stream_compression_algorithm(*grpc_stream_compression_algorithm_for_level_type)(grpc_stream_compression_level level, uint32_t accepted_stream_encodings);
+extern grpc_stream_compression_algorithm_for_level_type grpc_stream_compression_algorithm_for_level_import;
+#define grpc_stream_compression_algorithm_for_level grpc_stream_compression_algorithm_for_level_import
 typedef void(*grpc_compression_options_init_type)(grpc_compression_options *opts);
 extern grpc_compression_options_init_type grpc_compression_options_init_import;
 #define grpc_compression_options_init grpc_compression_options_init_import
@@ -182,6 +158,9 @@ extern grpc_compression_options_disable_algorithm_type grpc_compression_options_
 typedef int(*grpc_compression_options_is_algorithm_enabled_type)(const grpc_compression_options *opts, grpc_compression_algorithm algorithm);
 extern grpc_compression_options_is_algorithm_enabled_type grpc_compression_options_is_algorithm_enabled_import;
 #define grpc_compression_options_is_algorithm_enabled grpc_compression_options_is_algorithm_enabled_import
+typedef int(*grpc_compression_options_is_stream_compression_algorithm_enabled_type)(const grpc_compression_options *opts, grpc_stream_compression_algorithm algorithm);
+extern grpc_compression_options_is_stream_compression_algorithm_enabled_type grpc_compression_options_is_stream_compression_algorithm_enabled_import;
+#define grpc_compression_options_is_stream_compression_algorithm_enabled grpc_compression_options_is_stream_compression_algorithm_enabled_import
 typedef void(*grpc_metadata_array_init_type)(grpc_metadata_array *array);
 extern grpc_metadata_array_init_type grpc_metadata_array_init_import;
 #define grpc_metadata_array_init grpc_metadata_array_init_import
@@ -233,13 +212,16 @@ extern grpc_completion_queue_shutdown_type grpc_completion_queue_shutdown_import
 typedef void(*grpc_completion_queue_destroy_type)(grpc_completion_queue *cq);
 extern grpc_completion_queue_destroy_type grpc_completion_queue_destroy_import;
 #define grpc_completion_queue_destroy grpc_completion_queue_destroy_import
-typedef grpc_alarm *(*grpc_alarm_create_type)(grpc_completion_queue *cq, gpr_timespec deadline, void *tag);
+typedef grpc_alarm *(*grpc_alarm_create_type)(void *reserved);
 extern grpc_alarm_create_type grpc_alarm_create_import;
 #define grpc_alarm_create grpc_alarm_create_import
-typedef void(*grpc_alarm_cancel_type)(grpc_alarm *alarm);
+typedef void(*grpc_alarm_set_type)(grpc_alarm *alarm, grpc_completion_queue *cq, gpr_timespec deadline, void *tag, void *reserved);
+extern grpc_alarm_set_type grpc_alarm_set_import;
+#define grpc_alarm_set grpc_alarm_set_import
+typedef void(*grpc_alarm_cancel_type)(grpc_alarm *alarm, void *reserved);
 extern grpc_alarm_cancel_type grpc_alarm_cancel_import;
 #define grpc_alarm_cancel grpc_alarm_cancel_import
-typedef void(*grpc_alarm_destroy_type)(grpc_alarm *alarm);
+typedef void(*grpc_alarm_destroy_type)(grpc_alarm *alarm, void *reserved);
 extern grpc_alarm_destroy_type grpc_alarm_destroy_import;
 #define grpc_alarm_destroy grpc_alarm_destroy_import
 typedef grpc_connectivity_state(*grpc_channel_check_connectivity_state_type)(grpc_channel *channel, int try_to_connect);
@@ -251,6 +233,9 @@ extern grpc_channel_num_external_connectivity_watchers_type grpc_channel_num_ext
 typedef void(*grpc_channel_watch_connectivity_state_type)(grpc_channel *channel, grpc_connectivity_state last_observed_state, gpr_timespec deadline, grpc_completion_queue *cq, void *tag);
 extern grpc_channel_watch_connectivity_state_type grpc_channel_watch_connectivity_state_import;
 #define grpc_channel_watch_connectivity_state grpc_channel_watch_connectivity_state_import
+typedef int(*grpc_channel_support_connectivity_watcher_type)(grpc_channel *channel);
+extern grpc_channel_support_connectivity_watcher_type grpc_channel_support_connectivity_watcher_import;
+#define grpc_channel_support_connectivity_watcher grpc_channel_support_connectivity_watcher_import
 typedef grpc_call *(*grpc_channel_create_call_type)(grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask, grpc_completion_queue *completion_queue, grpc_slice method, const grpc_slice *host, gpr_timespec deadline, void *reserved);
 extern grpc_channel_create_call_type grpc_channel_create_call_import;
 #define grpc_channel_create_call grpc_channel_create_call_import
@@ -470,6 +455,36 @@ extern grpc_call_set_credentials_type grpc_call_set_credentials_import;
 typedef void(*grpc_server_credentials_set_auth_metadata_processor_type)(grpc_server_credentials *creds, grpc_auth_metadata_processor processor);
 extern grpc_server_credentials_set_auth_metadata_processor_type grpc_server_credentials_set_auth_metadata_processor_import;
 #define grpc_server_credentials_set_auth_metadata_processor grpc_server_credentials_set_auth_metadata_processor_import
+typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_create_type)(grpc_slice *slices, size_t nslices);
+extern grpc_raw_byte_buffer_create_type grpc_raw_byte_buffer_create_import;
+#define grpc_raw_byte_buffer_create grpc_raw_byte_buffer_create_import
+typedef grpc_byte_buffer *(*grpc_raw_compressed_byte_buffer_create_type)(grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
+extern grpc_raw_compressed_byte_buffer_create_type grpc_raw_compressed_byte_buffer_create_import;
+#define grpc_raw_compressed_byte_buffer_create grpc_raw_compressed_byte_buffer_create_import
+typedef grpc_byte_buffer *(*grpc_byte_buffer_copy_type)(grpc_byte_buffer *bb);
+extern grpc_byte_buffer_copy_type grpc_byte_buffer_copy_import;
+#define grpc_byte_buffer_copy grpc_byte_buffer_copy_import
+typedef size_t(*grpc_byte_buffer_length_type)(grpc_byte_buffer *bb);
+extern grpc_byte_buffer_length_type grpc_byte_buffer_length_import;
+#define grpc_byte_buffer_length grpc_byte_buffer_length_import
+typedef void(*grpc_byte_buffer_destroy_type)(grpc_byte_buffer *byte_buffer);
+extern grpc_byte_buffer_destroy_type grpc_byte_buffer_destroy_import;
+#define grpc_byte_buffer_destroy grpc_byte_buffer_destroy_import
+typedef int(*grpc_byte_buffer_reader_init_type)(grpc_byte_buffer_reader *reader, grpc_byte_buffer *buffer);
+extern grpc_byte_buffer_reader_init_type grpc_byte_buffer_reader_init_import;
+#define grpc_byte_buffer_reader_init grpc_byte_buffer_reader_init_import
+typedef void(*grpc_byte_buffer_reader_destroy_type)(grpc_byte_buffer_reader *reader);
+extern grpc_byte_buffer_reader_destroy_type grpc_byte_buffer_reader_destroy_import;
+#define grpc_byte_buffer_reader_destroy grpc_byte_buffer_reader_destroy_import
+typedef int(*grpc_byte_buffer_reader_next_type)(grpc_byte_buffer_reader *reader, grpc_slice *slice);
+extern grpc_byte_buffer_reader_next_type grpc_byte_buffer_reader_next_import;
+#define grpc_byte_buffer_reader_next grpc_byte_buffer_reader_next_import
+typedef grpc_slice(*grpc_byte_buffer_reader_readall_type)(grpc_byte_buffer_reader *reader);
+extern grpc_byte_buffer_reader_readall_type grpc_byte_buffer_reader_readall_import;
+#define grpc_byte_buffer_reader_readall grpc_byte_buffer_reader_readall_import
+typedef grpc_byte_buffer *(*grpc_raw_byte_buffer_from_reader_type)(grpc_byte_buffer_reader *reader);
+extern grpc_raw_byte_buffer_from_reader_type grpc_raw_byte_buffer_from_reader_import;
+#define grpc_raw_byte_buffer_from_reader grpc_raw_byte_buffer_from_reader_import
 typedef grpc_slice(*grpc_slice_ref_type)(grpc_slice s);
 extern grpc_slice_ref_type grpc_slice_ref_import;
 #define grpc_slice_ref grpc_slice_ref_import
diff --git a/src/ruby/lib/grpc/google_rpc_status_utils.rb b/src/ruby/lib/grpc/google_rpc_status_utils.rb
new file mode 100644
index 0000000000..fdadd6b76e
--- /dev/null
+++ b/src/ruby/lib/grpc/google_rpc_status_utils.rb
@@ -0,0 +1,28 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require_relative './grpc'
+require 'google/rpc/status_pb'
+
+# GRPC contains the General RPC module.
+module GRPC
+  # GoogleRpcStatusUtils provides utilities to convert between a
+  # GRPC::Core::Status and a deserialized Google::Rpc::Status proto
+  class GoogleRpcStatusUtils
+    def self.extract_google_rpc_status(status)
+      fail ArgumentError, 'bad type' unless status.is_a? Struct::Status
+      Google::Rpc::Status.decode(status.metadata['grpc-status-details-bin'])
+    end
+  end
+end
diff --git a/src/ruby/qps/proxy-worker.rb b/src/ruby/qps/proxy-worker.rb
index d7a9f114bd..488610ae74 100755
--- a/src/ruby/qps/proxy-worker.rb
+++ b/src/ruby/qps/proxy-worker.rb
@@ -41,7 +41,7 @@ class ProxyBenchmarkClientServiceImpl < Grpc::Testing::ProxyClientService::Servi
     @histogram = Histogram.new(@histres, @histmax)
     @start_time = Time.now
     # TODO(vjpai): Support multiple client channels by spawning off a PHP client per channel
-    command = "php " + File.expand_path(File.dirname(__FILE__)) + "/../../php/tests/qps/client.php " + @mytarget
+    command = "php -d extension=" + File.expand_path(File.dirname(__FILE__)) + "/../../php/ext/grpc/modules/grpc.so " + File.expand_path(File.dirname(__FILE__)) + "/../../php/tests/qps/client.php " + @mytarget
     puts "Starting command: " + command
     @php_pid = spawn(command)
   end
diff --git a/src/ruby/spec/client_server_spec.rb b/src/ruby/spec/client_server_spec.rb
index 1a9b47e2c3..adab8c9d14 100644
--- a/src/ruby/spec/client_server_spec.rb
+++ b/src/ruby/spec/client_server_spec.rb
@@ -29,14 +29,18 @@ shared_context 'setup: tags' do
     expect(recvd_rpc).to_not eq nil
     server_call = recvd_rpc.call
     ops = { CallOps::SEND_INITIAL_METADATA => metadata }
-    svr_batch = server_call.run_batch(ops)
-    expect(svr_batch.send_metadata).to be true
+    server_batch = server_call.run_batch(ops)
+    expect(server_batch.send_metadata).to be true
     server_call
   end
 
   def new_client_call
     @ch.create_call(nil, nil, '/method', nil, deadline)
   end
+
+  def ok_status
+    Struct::Status.new(StatusCodes::OK, 'OK')
+  end
 end
 
 shared_examples 'basic GRPC message delivery is OK' do
@@ -70,19 +74,32 @@ shared_examples 'basic GRPC message delivery is OK' do
 
     client_ops = {
       CallOps::SEND_INITIAL_METADATA => {},
-      CallOps::SEND_MESSAGE => sent_message
+      CallOps::SEND_MESSAGE => sent_message,
+      CallOps::SEND_CLOSE_FROM_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.send_message).to be true
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_message).to be true
+    expect(client_batch.send_close).to be true
 
     # confirm the server can read the inbound message
     server_thread.join
     server_ops = {
-      CallOps::RECV_MESSAGE => nil
+      CallOps::RECV_MESSAGE => nil,
+      CallOps::RECV_CLOSE_ON_SERVER => nil,
+      CallOps::SEND_STATUS_FROM_SERVER => ok_status
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.message).to eq(sent_message)
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.message).to eq(sent_message)
+    expect(server_batch.send_close).to be true
+    expect(server_batch.send_status).to be true
+
+    # finish the call
+    final_client_batch = call.run_batch(
+      CallOps::RECV_INITIAL_METADATA => nil,
+      CallOps::RECV_STATUS_ON_CLIENT => nil)
+    expect(final_client_batch.metadata).to eq({})
+    expect(final_client_batch.status.code).to eq(0)
   end
 
   it 'responses written by servers are received by the client' do
@@ -95,21 +112,36 @@ shared_examples 'basic GRPC message delivery is OK' do
 
     client_ops = {
       CallOps::SEND_INITIAL_METADATA => {},
-      CallOps::SEND_MESSAGE => sent_message
+      CallOps::SEND_MESSAGE => sent_message,
+      CallOps::SEND_CLOSE_FROM_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.send_message).to be true
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_message).to be true
+    expect(client_batch.send_close).to be true
 
     # confirm the server can read the inbound message
     server_thread.join
     server_ops = {
       CallOps::RECV_MESSAGE => nil,
-      CallOps::SEND_MESSAGE => reply_text
+      CallOps::RECV_CLOSE_ON_SERVER => nil,
+      CallOps::SEND_MESSAGE => reply_text,
+      CallOps::SEND_STATUS_FROM_SERVER => ok_status
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.message).to eq(sent_message)
-    expect(svr_batch.send_message).to be true
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.message).to eq(sent_message)
+    expect(server_batch.send_close).to be true
+    expect(server_batch.send_message).to be true
+    expect(server_batch.send_status).to be true
+
+    # finish the call
+    final_client_batch = call.run_batch(
+      CallOps::RECV_INITIAL_METADATA => nil,
+      CallOps::RECV_MESSAGE => nil,
+      CallOps::RECV_STATUS_ON_CLIENT => nil)
+    expect(final_client_batch.metadata).to eq({})
+    expect(final_client_batch.message).to eq(reply_text)
+    expect(final_client_batch.status.code).to eq(0)
   end
 
   it 'compressed messages can be sent and received' do
@@ -125,30 +157,37 @@ shared_examples 'basic GRPC message delivery is OK' do
 
     client_ops = {
       CallOps::SEND_INITIAL_METADATA => md,
-      CallOps::SEND_MESSAGE => long_request_str
+      CallOps::SEND_MESSAGE => long_request_str,
+      CallOps::SEND_CLOSE_FROM_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.send_message).to be true
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_message).to be true
+    expect(client_batch.send_close).to be true
 
     # confirm the server can read the inbound message
     server_thread.join
     server_ops = {
       CallOps::RECV_MESSAGE => nil,
-      CallOps::SEND_MESSAGE => long_response_str
+      CallOps::RECV_CLOSE_ON_SERVER => nil,
+      CallOps::SEND_MESSAGE => long_response_str,
+      CallOps::SEND_STATUS_FROM_SERVER => ok_status
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.message).to eq(long_request_str)
-    expect(svr_batch.send_message).to be true
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.message).to eq(long_request_str)
+    expect(server_batch.send_close).to be true
+    expect(server_batch.send_message).to be true
+    expect(server_batch.send_status).to be true
 
     client_ops = {
-      CallOps::SEND_CLOSE_FROM_CLIENT => nil,
       CallOps::RECV_INITIAL_METADATA => nil,
-      CallOps::RECV_MESSAGE => nil
+      CallOps::RECV_MESSAGE => nil,
+      CallOps::RECV_STATUS_ON_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_close).to be true
-    expect(batch_result.message).to eq long_response_str
+    final_client_batch = call.run_batch(client_ops)
+    expect(final_client_batch.metadata).to eq({})
+    expect(final_client_batch.message).to eq long_response_str
+    expect(final_client_batch.status.code).to eq(0)
   end
 
   it 'servers can ignore a client write and send a status' do
@@ -161,11 +200,13 @@ shared_examples 'basic GRPC message delivery is OK' do
 
     client_ops = {
       CallOps::SEND_INITIAL_METADATA => {},
-      CallOps::SEND_MESSAGE => sent_message
+      CallOps::SEND_MESSAGE => sent_message,
+      CallOps::SEND_CLOSE_FROM_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.send_message).to be true
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_message).to be true
+    expect(client_batch.send_close).to be true
 
     # confirm the server can read the inbound message
     the_status = Struct::Status.new(StatusCodes::OK, 'OK')
@@ -173,9 +214,15 @@ shared_examples 'basic GRPC message delivery is OK' do
     server_ops = {
       CallOps::SEND_STATUS_FROM_SERVER => the_status
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.message).to eq nil
-    expect(svr_batch.send_status).to be true
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.message).to eq nil
+    expect(server_batch.send_status).to be true
+
+    final_client_batch = call.run_batch(
+      CallOps::RECV_INITIAL_METADATA => nil,
+      CallOps::RECV_STATUS_ON_CLIENT => nil)
+    expect(final_client_batch.metadata).to eq({})
+    expect(final_client_batch.status.code).to eq(0)
   end
 
   it 'completes calls by sending status to client and server' do
@@ -190,9 +237,9 @@ shared_examples 'basic GRPC message delivery is OK' do
       CallOps::SEND_INITIAL_METADATA => {},
       CallOps::SEND_MESSAGE => sent_message
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.send_message).to be true
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_message).to be true
 
     # confirm the server can read the inbound message and respond
     the_status = Struct::Status.new(StatusCodes::OK, 'OK', {})
@@ -202,10 +249,10 @@ shared_examples 'basic GRPC message delivery is OK' do
       CallOps::SEND_MESSAGE => reply_text,
       CallOps::SEND_STATUS_FROM_SERVER => the_status
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.message).to eq sent_message
-    expect(svr_batch.send_status).to be true
-    expect(svr_batch.send_message).to be true
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.message).to eq sent_message
+    expect(server_batch.send_status).to be true
+    expect(server_batch.send_message).to be true
 
     # confirm the client can receive the server response and status.
     client_ops = {
@@ -214,17 +261,17 @@ shared_examples 'basic GRPC message delivery is OK' do
       CallOps::RECV_MESSAGE => nil,
       CallOps::RECV_STATUS_ON_CLIENT => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_close).to be true
-    expect(batch_result.message).to eq reply_text
-    expect(batch_result.status).to eq the_status
+    final_client_batch = call.run_batch(client_ops)
+    expect(final_client_batch.send_close).to be true
+    expect(final_client_batch.message).to eq reply_text
+    expect(final_client_batch.status).to eq the_status
 
     # confirm the server can receive the client close.
     server_ops = {
       CallOps::RECV_CLOSE_ON_SERVER => nil
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.send_close).to be true
+    final_server_batch = server_call.run_batch(server_ops)
+    expect(final_server_batch.send_close).to be true
   end
 
   def client_cancel_test(cancel_proc, expected_code,
@@ -240,9 +287,9 @@ shared_examples 'basic GRPC message delivery is OK' do
       CallOps::SEND_INITIAL_METADATA => {},
       CallOps::RECV_INITIAL_METADATA => nil
     }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
-    expect(batch_result.metadata).to eq({})
+    client_batch = call.run_batch(client_ops)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.metadata).to eq({})
 
     cancel_proc.call(call)
 
@@ -250,16 +297,16 @@ shared_examples 'basic GRPC message delivery is OK' do
     server_ops = {
       CallOps::RECV_CLOSE_ON_SERVER => nil
     }
-    svr_batch = server_call.run_batch(server_ops)
-    expect(svr_batch.send_close).to be true
+    server_batch = server_call.run_batch(server_ops)
+    expect(server_batch.send_close).to be true
 
     client_ops = {
       CallOps::RECV_STATUS_ON_CLIENT => {}
     }
-    batch_result = call.run_batch(client_ops)
+    client_batch = call.run_batch(client_ops)
 
-    expect(batch_result.status.code).to be expected_code
-    expect(batch_result.status.details).to eq expected_details
+    expect(client_batch.status.code).to be expected_code
+    expect(client_batch.status.details).to eq expected_details
   end
 
   it 'clients can cancel a call on the server' do
@@ -325,10 +372,11 @@ shared_examples 'GRPC metadata delivery works OK' do
 
         call = new_client_call
         client_ops = {
-          CallOps::SEND_INITIAL_METADATA => md
+          CallOps::SEND_INITIAL_METADATA => md,
+          CallOps::SEND_CLOSE_FROM_CLIENT => nil
         }
-        batch_result = call.run_batch(client_ops)
-        expect(batch_result.send_metadata).to be true
+        client_batch = call.run_batch(client_ops)
+        expect(client_batch.send_metadata).to be true
 
         # confirm the server can receive the client metadata
         rcv_thread.join
@@ -336,6 +384,21 @@ shared_examples 'GRPC metadata delivery works OK' do
         recvd_md = recvd_rpc.metadata
         replace_symbols = Hash[md.each_pair.collect { |x, y| [x.to_s, y] }]
         expect(recvd_md).to eq(recvd_md.merge(replace_symbols))
+
+        # finish the call
+        final_server_batch = recvd_rpc.call.run_batch(
+          CallOps::RECV_CLOSE_ON_SERVER => nil,
+          CallOps::SEND_INITIAL_METADATA => nil,
+          CallOps::SEND_STATUS_FROM_SERVER => ok_status)
+        expect(final_server_batch.send_close).to be(true)
+        expect(final_server_batch.send_metadata).to be(true)
+        expect(final_server_batch.send_status).to be(true)
+
+        final_client_batch = call.run_batch(
+          CallOps::RECV_INITIAL_METADATA => nil,
+          CallOps::RECV_STATUS_ON_CLIENT => nil)
+        expect(final_client_batch.metadata).to eq({})
+        expect(final_client_batch.status.code).to eq(0)
       end
     end
   end
@@ -381,6 +444,9 @@ shared_examples 'GRPC metadata delivery works OK' do
           recvd_rpc.call.run_batch(server_ops)
         end
         expect(&blk).to raise_error
+
+        # cancel the call so the server can shut down immediately
+        call.cancel
       end
     end
 
@@ -394,25 +460,37 @@ shared_examples 'GRPC metadata delivery works OK' do
       # client signals that it's done sending metadata to allow server to
       # respond
       client_ops = {
-        CallOps::SEND_INITIAL_METADATA => nil
+        CallOps::SEND_INITIAL_METADATA => nil,
+        CallOps::SEND_CLOSE_FROM_CLIENT => nil
       }
-      call.run_batch(client_ops)
+      client_batch = call.run_batch(client_ops)
+      expect(client_batch.send_metadata).to be true
+      expect(client_batch.send_close).to be true
 
       # server gets the invocation but sends no metadata back
       rcv_thread.join
       expect(recvd_rpc).to_not eq nil
       server_call = recvd_rpc.call
       server_ops = {
-        CallOps::SEND_INITIAL_METADATA => nil
+        # receive close and send status to finish the call
+        CallOps::RECV_CLOSE_ON_SERVER => nil,
+        CallOps::SEND_INITIAL_METADATA => nil,
+        CallOps::SEND_STATUS_FROM_SERVER => ok_status
       }
-      server_call.run_batch(server_ops)
+      srv_batch = server_call.run_batch(server_ops)
+      expect(srv_batch.send_close).to be true
+      expect(srv_batch.send_metadata).to be true
+      expect(srv_batch.send_status).to be true
 
       # client receives nothing as expected
       client_ops = {
-        CallOps::RECV_INITIAL_METADATA => nil
+        CallOps::RECV_INITIAL_METADATA => nil,
+        # receive status to finish the call
+        CallOps::RECV_STATUS_ON_CLIENT => nil
       }
-      batch_result = call.run_batch(client_ops)
-      expect(batch_result.metadata).to eq({})
+      final_client_batch = call.run_batch(client_ops)
+      expect(final_client_batch.metadata).to eq({})
+      expect(final_client_batch.status.code).to eq(0)
     end
 
     it 'sends all the pairs when keys and values are valid' do
@@ -426,26 +504,36 @@ shared_examples 'GRPC metadata delivery works OK' do
         # client signals that it's done sending metadata to allow server to
         # respond
         client_ops = {
-          CallOps::SEND_INITIAL_METADATA => nil
+          CallOps::SEND_INITIAL_METADATA => nil,
+          CallOps::SEND_CLOSE_FROM_CLIENT => nil
         }
-        call.run_batch(client_ops)
+        client_batch = call.run_batch(client_ops)
+        expect(client_batch.send_metadata).to be true
+        expect(client_batch.send_close).to be true
 
         # server gets the invocation but sends no metadata back
         rcv_thread.join
         expect(recvd_rpc).to_not eq nil
         server_call = recvd_rpc.call
         server_ops = {
-          CallOps::SEND_INITIAL_METADATA => md
+          CallOps::RECV_CLOSE_ON_SERVER => nil,
+          CallOps::SEND_INITIAL_METADATA => md,
+          CallOps::SEND_STATUS_FROM_SERVER => ok_status
         }
-        server_call.run_batch(server_ops)
+        srv_batch = server_call.run_batch(server_ops)
+        expect(srv_batch.send_close).to be true
+        expect(srv_batch.send_metadata).to be true
+        expect(srv_batch.send_status).to be true
 
         # client receives nothing as expected
         client_ops = {
-          CallOps::RECV_INITIAL_METADATA => nil
+          CallOps::RECV_INITIAL_METADATA => nil,
+          CallOps::RECV_STATUS_ON_CLIENT => nil
         }
-        batch_result = call.run_batch(client_ops)
+        final_client_batch = call.run_batch(client_ops)
         replace_symbols = Hash[md.each_pair.collect { |x, y| [x.to_s, y] }]
-        expect(batch_result.metadata).to eq(replace_symbols)
+        expect(final_client_batch.metadata).to eq(replace_symbols)
+        expect(final_client_batch.status.code).to eq(0)
       end
     end
   end
@@ -510,8 +598,7 @@ describe 'the secure http client/server' do
 
     initial_md_key = 'k2'
     initial_md_val = 'v2'
-    initial_md = {}
-    initial_md[initial_md_key] = initial_md_val
+    initial_md = { initial_md_key => initial_md_val }
     expected_md = creds_update_md.clone
     fail 'bad test param' unless expected_md[initial_md_key].nil?
     expected_md[initial_md_key] = initial_md_val
@@ -523,11 +610,12 @@ describe 'the secure http client/server' do
 
     call = new_client_call
     call.set_credentials! call_creds
-    client_ops = {
-      CallOps::SEND_INITIAL_METADATA => initial_md
-    }
-    batch_result = call.run_batch(client_ops)
-    expect(batch_result.send_metadata).to be true
+
+    client_batch = call.run_batch(
+      CallOps::SEND_INITIAL_METADATA => initial_md,
+      CallOps::SEND_CLOSE_FROM_CLIENT => nil)
+    expect(client_batch.send_metadata).to be true
+    expect(client_batch.send_close).to be true
 
     # confirm the server can receive the client metadata
     rcv_thread.join
@@ -535,6 +623,24 @@ describe 'the secure http client/server' do
     recvd_md = recvd_rpc.metadata
     replace_symbols = Hash[expected_md.each_pair.collect { |x, y| [x.to_s, y] }]
     expect(recvd_md).to eq(recvd_md.merge(replace_symbols))
+
+    credentials_update_test_finish_call(call, recvd_rpc.call)
+  end
+
+  def credentials_update_test_finish_call(client_call, server_call)
+    final_server_batch = server_call.run_batch(
+      CallOps::RECV_CLOSE_ON_SERVER => nil,
+      CallOps::SEND_INITIAL_METADATA => nil,
+      CallOps::SEND_STATUS_FROM_SERVER => ok_status)
+    expect(final_server_batch.send_close).to be(true)
+    expect(final_server_batch.send_metadata).to be(true)
+    expect(final_server_batch.send_status).to be(true)
+
+    final_client_batch = client_call.run_batch(
+      CallOps::RECV_INITIAL_METADATA => nil,
+      CallOps::RECV_STATUS_ON_CLIENT => nil)
+    expect(final_client_batch.metadata).to eq({})
+    expect(final_client_batch.status.code).to eq(0)
   end
 
   it 'modifies metadata with CallCredentials' do
diff --git a/src/ruby/spec/generic/active_call_spec.rb b/src/ruby/spec/generic/active_call_spec.rb
index ec0c294174..a00df9236d 100644
--- a/src/ruby/spec/generic/active_call_spec.rb
+++ b/src/ruby/spec/generic/active_call_spec.rb
@@ -22,6 +22,21 @@ describe GRPC::ActiveCall do
   CallOps = GRPC::Core::CallOps
   WriteFlags = GRPC::Core::WriteFlags
 
+  def ok_status
+    Struct::Status.new(OK, 'OK')
+  end
+
+  def send_and_receive_close_and_status(client_call, server_call)
+    client_call.run_batch(CallOps::SEND_CLOSE_FROM_CLIENT => nil)
+    server_call.run_batch(CallOps::RECV_CLOSE_ON_SERVER => nil,
+                          CallOps::SEND_STATUS_FROM_SERVER => ok_status)
+    client_call.run_batch(CallOps::RECV_STATUS_ON_CLIENT => nil)
+  end
+
+  def inner_call_of_active_call(active_call)
+    active_call.instance_variable_get(:@call)
+  end
+
   before(:each) do
     @pass_through = proc { |x| x }
     host = '0.0.0.0:0'
@@ -70,13 +85,13 @@ describe GRPC::ActiveCall do
   end
 
   describe '#remote_send' do
-    it 'allows a client to send a payload to the server' do
+    it 'allows a client to send a payload to the server', test: true do
       call = make_test_call
       ActiveCall.client_invoke(call)
-      @client_call = ActiveCall.new(call, @pass_through,
-                                    @pass_through, deadline)
+      client_call = ActiveCall.new(call, @pass_through,
+                                   @pass_through, deadline)
       msg = 'message is a string'
-      @client_call.remote_send(msg)
+      client_call.remote_send(msg)
 
       # check that server rpc new was received
       recvd_rpc = @server.request_call
@@ -86,8 +101,13 @@ describe GRPC::ActiveCall do
       # Accept the call, and verify that the server reads the response ok.
       server_call = ActiveCall.new(recvd_call, @pass_through,
                                    @pass_through, deadline,
-                                   metadata_received: true)
+                                   metadata_received: true,
+                                   started: false)
       expect(server_call.remote_read).to eq(msg)
+      # finish the call
+      server_call.send_initial_metadata
+      call.run_batch(CallOps::RECV_INITIAL_METADATA => nil)
+      send_and_receive_close_and_status(call, recvd_call)
     end
 
     it 'marshals the payload using the marshal func' do
@@ -109,6 +129,9 @@ describe GRPC::ActiveCall do
                                    @pass_through, deadline,
                                    metadata_received: true)
       expect(server_call.remote_read).to eq('marshalled:' + msg)
+      # finish the call
+      call.run_batch(CallOps::RECV_INITIAL_METADATA => nil)
+      send_and_receive_close_and_status(call, recvd_call)
     end
 
     TEST_WRITE_FLAGS = [WriteFlags::BUFFER_HINT, WriteFlags::NO_COMPRESS]
@@ -136,6 +159,9 @@ describe GRPC::ActiveCall do
                                      @pass_through, deadline,
                                      metadata_received: true)
         expect(server_call.remote_read).to eq('marshalled:' + msg)
+        # finish the call
+        server_call.send_status(OK, '', true)
+        client_call.receive_and_check_status
       end
     end
   end
@@ -177,7 +203,6 @@ describe GRPC::ActiveCall do
                                     @pass_through,
                                     @pass_through,
                                     deadline)
-
       expect(@client_call.metadata_sent).to eql(true)
       expect(call).to(
         receive(:run_batch).with(hash_including(
@@ -291,6 +316,10 @@ describe GRPC::ActiveCall do
       expect(recvd_rpc.metadata).to_not be_nil
       expect(recvd_rpc.metadata['k1']).to eq('v1')
       expect(recvd_rpc.metadata['k2']).to eq('v2')
+      # finish the call
+      recvd_call.run_batch(CallOps::SEND_INITIAL_METADATA => {})
+      call.run_batch(CallOps::RECV_INITIAL_METADATA => nil)
+      send_and_receive_close_and_status(call, recvd_call)
     end
   end
 
@@ -324,6 +353,8 @@ describe GRPC::ActiveCall do
       server_call = expect_server_to_receive(msg)
       server_call.remote_send('server_response')
       expect(client_call.remote_read).to eq('server_response')
+      send_and_receive_close_and_status(
+        call, inner_call_of_active_call(server_call))
     end
 
     it 'saves no metadata when the server adds no metadata' do
@@ -338,6 +369,8 @@ describe GRPC::ActiveCall do
       expect(client_call.metadata).to be_nil
       client_call.remote_read
       expect(client_call.metadata).to eq({})
+      send_and_receive_close_and_status(
+        call, inner_call_of_active_call(server_call))
     end
 
     it 'saves metadata add by the server' do
@@ -353,6 +386,8 @@ describe GRPC::ActiveCall do
       client_call.remote_read
       expected = { 'k1' => 'v1', 'k2' => 'v2' }
       expect(client_call.metadata).to eq(expected)
+      send_and_receive_close_and_status(
+        call, inner_call_of_active_call(server_call))
     end
 
     it 'get a status from server when nothing else sent from server' do
@@ -409,6 +444,8 @@ describe GRPC::ActiveCall do
       server_call = expect_server_to_receive(msg)
       server_call.remote_send('server_response')
       expect(client_call.remote_read).to eq('unmarshalled:server_response')
+      send_and_receive_close_and_status(
+        call, inner_call_of_active_call(server_call))
     end
   end
 
@@ -418,9 +455,11 @@ describe GRPC::ActiveCall do
       client_call = ActiveCall.new(call, @pass_through,
                                    @pass_through, deadline)
       expect(client_call.each_remote_read).to be_a(Enumerator)
+      # finish the call
+      client_call.cancel
     end
 
-    it 'the returns an enumerator that can read n responses' do
+    it 'the returned enumerator can read n responses' do
       call = make_test_call
       ActiveCall.client_invoke(call)
       client_call = ActiveCall.new(call, @pass_through,
@@ -435,6 +474,8 @@ describe GRPC::ActiveCall do
         server_call.remote_send(reply)
         expect(e.next).to eq(reply)
       end
+      send_and_receive_close_and_status(
+        call, inner_call_of_active_call(server_call))
     end
 
     it 'the returns an enumerator that stops after an OK Status' do
@@ -453,7 +494,7 @@ describe GRPC::ActiveCall do
         server_call.remote_send(reply)
         expect(e.next).to eq(reply)
       end
-      server_call.send_status(OK, 'OK')
+      server_call.send_status(OK, 'OK', true)
       expect { e.next }.to raise_error(StopIteration)
     end
   end
diff --git a/src/ruby/spec/google_rpc_status_utils_spec.rb b/src/ruby/spec/google_rpc_status_utils_spec.rb
new file mode 100644
index 0000000000..fe221c30dd
--- /dev/null
+++ b/src/ruby/spec/google_rpc_status_utils_spec.rb
@@ -0,0 +1,223 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'grpc'
+require_relative '../lib/grpc/google_rpc_status_utils'
+require_relative '../pb/src/proto/grpc/testing/messages_pb'
+require_relative '../pb/src/proto/grpc/testing/messages_pb'
+require 'google/protobuf/well_known_types'
+
+include GRPC::Core
+
+describe 'conversion from a status struct to a google protobuf status' do
+  it 'fails if the input is not a status struct' do
+    begin
+      GRPC::GoogleRpcStatusUtils.extract_google_rpc_status('string')
+    rescue => e
+      exception = e
+    end
+    expect(exception.is_a?(ArgumentError)).to be true
+    expect(exception.message.include?('bad type')).to be true
+  end
+
+  it 'fails with some error if the header key is missing' do
+    status = Struct::Status.new(1, 'details', key: 'val')
+    expect(status.metadata.nil?).to be false
+    expect do
+      GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    end.to raise_error(StandardError)
+  end
+
+  it 'fails with some error if the header key fails to deserialize' do
+    status = Struct::Status.new(1, 'details',
+                                'grpc-status-details-bin' => 'string_val')
+    expect do
+      GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    end.to raise_error(StandardError)
+  end
+
+  it 'silently ignores erroneous mismatch between messages in '\
+    'status struct and protobuf status' do
+    proto = Google::Rpc::Status.new(code: 1, message: 'proto message')
+    encoded_proto = Google::Rpc::Status.encode(proto)
+    status = Struct::Status.new(1, 'struct message',
+                                'grpc-status-details-bin' => encoded_proto)
+    rpc_status = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    expect(rpc_status).to eq(proto)
+  end
+
+  it 'silently ignores erroneous mismatch between codes in status struct '\
+    'and protobuf status' do
+    proto = Google::Rpc::Status.new(code: 1, message: 'matching message')
+    encoded_proto = Google::Rpc::Status.encode(proto)
+    status = Struct::Status.new(2, 'matching message',
+                                'grpc-status-details-bin' => encoded_proto)
+    rpc_status = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    expect(rpc_status).to eq(proto)
+  end
+
+  it 'can succesfully convert a status struct into a google protobuf status '\
+    'when there are no rpcstatus details' do
+    proto = Google::Rpc::Status.new(code: 1, message: 'matching message')
+    encoded_proto = Google::Rpc::Status.encode(proto)
+    status = Struct::Status.new(1, 'matching message',
+                                'grpc-status-details-bin' => encoded_proto)
+    out = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    expect(out.code).to eq(1)
+    expect(out.message).to eq('matching message')
+    expect(out.details).to eq([])
+  end
+
+  it 'can succesfully convert a status struct into a google protobuf '\
+    'status when there are multiple rpcstatus details' do
+    simple_request_any = Google::Protobuf::Any.new
+    simple_request = Grpc::Testing::SimpleRequest.new(
+      payload: Grpc::Testing::Payload.new(body: 'request'))
+    simple_request_any.pack(simple_request)
+    simple_response_any = Google::Protobuf::Any.new
+    simple_response = Grpc::Testing::SimpleResponse.new(
+      payload: Grpc::Testing::Payload.new(body: 'response'))
+    simple_response_any.pack(simple_response)
+    payload_any = Google::Protobuf::Any.new
+    payload = Grpc::Testing::Payload.new(body: 'payload')
+    payload_any.pack(payload)
+    proto = Google::Rpc::Status.new(code: 1,
+                                    message: 'matching message',
+                                    details: [
+                                      simple_request_any,
+                                      simple_response_any,
+                                      payload_any
+                                    ])
+    encoded_proto = Google::Rpc::Status.encode(proto)
+    status = Struct::Status.new(1, 'matching message',
+                                'grpc-status-details-bin' => encoded_proto)
+    out = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(status)
+    expect(out.code).to eq(1)
+    expect(out.message).to eq('matching message')
+    expect(out.details[0].unpack(
+             Grpc::Testing::SimpleRequest)).to eq(simple_request)
+    expect(out.details[1].unpack(
+             Grpc::Testing::SimpleResponse)).to eq(simple_response)
+    expect(out.details[2].unpack(
+             Grpc::Testing::Payload)).to eq(payload)
+  end
+end
+
+# Test message
+class EchoMsg
+  def self.marshal(_o)
+    ''
+  end
+
+  def self.unmarshal(_o)
+    EchoMsg.new
+  end
+end
+
+# A test service that fills in the "reserved" grpc-status-details-bin trailer,
+# for client-side testing of GoogleRpcStatus protobuf extraction from trailers.
+class GoogleRpcStatusTestService
+  include GRPC::GenericService
+  rpc :an_rpc, EchoMsg, EchoMsg
+
+  def initialize(encoded_rpc_status)
+    @encoded_rpc_status = encoded_rpc_status
+  end
+
+  def an_rpc(_, _)
+    # TODO: create a server-side utility API for sending a google rpc status.
+    # Applications are not expected to set the grpc-status-details-bin
+    # ("grpc"-fixed and reserved for library use) manually.
+    # Doing so here is only for testing of the client-side api for extracting
+    # a google rpc status, which is useful
+    # when the interacting with a server that does fill in this trailer.
+    fail GRPC::Unknown.new('test message',
+                           'grpc-status-details-bin' => @encoded_rpc_status)
+  end
+end
+
+GoogleRpcStatusTestStub = GoogleRpcStatusTestService.rpc_stub_class
+
+describe 'receving a google rpc status from a remote endpoint' do
+  def start_server(encoded_rpc_status)
+    @srv = GRPC::RpcServer.new(pool_size: 1)
+    @server_port = @srv.add_http2_port('localhost:0',
+                                       :this_port_is_insecure)
+    @srv.handle(GoogleRpcStatusTestService.new(encoded_rpc_status))
+    @server_thd = Thread.new { @srv.run }
+    @srv.wait_till_running
+  end
+
+  def stop_server
+    expect(@srv.stopped?).to be(false)
+    @srv.stop
+    @server_thd.join
+    expect(@srv.stopped?).to be(true)
+  end
+
+  before(:each) do
+    simple_request_any = Google::Protobuf::Any.new
+    simple_request = Grpc::Testing::SimpleRequest.new(
+      payload: Grpc::Testing::Payload.new(body: 'request'))
+    simple_request_any.pack(simple_request)
+    simple_response_any = Google::Protobuf::Any.new
+    simple_response = Grpc::Testing::SimpleResponse.new(
+      payload: Grpc::Testing::Payload.new(body: 'response'))
+    simple_response_any.pack(simple_response)
+    payload_any = Google::Protobuf::Any.new
+    payload = Grpc::Testing::Payload.new(body: 'payload')
+    payload_any.pack(payload)
+    @expected_proto = Google::Rpc::Status.new(
+      code: StatusCodes::UNKNOWN,
+      message: 'test message',
+      details: [simple_request_any, simple_response_any, payload_any])
+    start_server(Google::Rpc::Status.encode(@expected_proto))
+  end
+
+  after(:each) do
+    stop_server
+  end
+
+  it 'should receive be able to extract a google rpc status from the '\
+    'status struct taken from a BadStatus exception' do
+    stub = GoogleRpcStatusTestStub.new("localhost:#{@server_port}",
+                                       :this_channel_is_insecure)
+    begin
+      stub.an_rpc(EchoMsg.new)
+    rescue GRPC::BadStatus => e
+      rpc_status = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(
+        e.to_status)
+    end
+    expect(rpc_status).to eq(@expected_proto)
+  end
+
+  it 'should receive be able to extract a google rpc status from the '\
+    'status struct taken from the op view of a call' do
+    stub = GoogleRpcStatusTestStub.new("localhost:#{@server_port}",
+                                       :this_channel_is_insecure)
+    op = stub.an_rpc(EchoMsg.new, return_op: true)
+    begin
+      op.execute
+    rescue GRPC::BadStatus => e
+      status_from_exception = e.to_status
+    end
+    rpc_status = GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(
+      op.status)
+    expect(rpc_status).to eq(@expected_proto)
+    # "to_status" on the bad status should give the same result
+    # as "status" on the "op view".
+    expect(GRPC::GoogleRpcStatusUtils.extract_google_rpc_status(
+             status_from_exception)).to eq(rpc_status)
+  end
+end
diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index 850404baad..567bd3b7f8 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -136,6 +136,8 @@
     add_definitions(/wd4065 /wd4506)
     # TODO(jtattermusch): revisit C4267 occurrences throughout the code
     add_definitions(/wd4267)
+    # TODO(jtattermusch): needed to build boringssl with VS2017, revisit later
+    add_definitions(/wd4987 /wd4774 /wd4819 /wd4996 /wd4619)
   endif()
 
   if (gRPC_USE_PROTO_LITE)
@@ -166,42 +168,28 @@
       set(gRPC_INSTALL FALSE)
     endif()
   elseif("<%text>${gRPC_ZLIB_PROVIDER}</%text>" STREQUAL "package")
-    find_package(ZLIB)
-    if(TARGET ZLIB::ZLIB)
-      set(_gRPC_ZLIB_LIBRARIES ZLIB::ZLIB)
-    endif()
+    find_package(ZLIB REQUIRED)
+    set(_gRPC_ZLIB_LIBRARIES <%text>${ZLIB_LIBRARIES}</%text>)
     set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
   endif()
 
   if("<%text>${gRPC_CARES_PROVIDER}</%text>" STREQUAL "module")
     if(NOT CARES_ROOT_DIR)
-      set(CARES_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/src/c-ares)
+      set(CARES_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/cares)
     endif()
-    string(TOLOWER <%text>${CMAKE_SYSTEM_NAME}</%text> CARES_SYSTEM_NAME)
+    set(CARES_SHARED OFF CACHE BOOL "disable shared library")
+    set(CARES_STATIC ON CACHE BOOL "link cares statically")
     set(CARES_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/cares")
-    set(CARES_BUILD_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares")
-    set(CARES_PLATFORM_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/config_<%text>${CARES_SYSTEM_NAME}</%text>")
-    if(EXISTS "<%text>${CARES_ROOT_DIR}</%text>/CMakeLists.txt")
-      if("<%text>${CARES_SYSTEM_NAME}</%text>" MATCHES "windows")
-        add_definitions(-DCARES_STATICLIB=1)
-        add_definitions(-DWIN32_LEAN_AND_MEAN=1)
-      else()
-        add_definitions(-DHAVE_CONFIG_H=1)
-        add_definitions(-D_GNU_SOURCE=1)
-      endif()
-      add_subdirectory(src/c-ares third_party/cares)
-      if(TARGET cares)
-          set(_gRPC_CARES_LIBRARIES cares)
-      endif()
-    else()
-      message(WARNING "gRPC_CARES_PROVIDER is \"module\" but CARES_ROOT_DIR is wrong")
+    add_subdirectory(third_party/cares/cares)
+    if(TARGET c-ares)
+      set(_gRPC_CARES_LIBRARIES c-ares)
     endif()
     if(gRPC_INSTALL)
       message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_CARES_PROVIDER is \"module\"")
       set(gRPC_INSTALL FALSE)
     endif()
   elseif("<%text>${gRPC_CARES_PROVIDER}</%text>" STREQUAL "package")
-    find_package(c-ares CONFIG)
+    find_package(c-ares REQUIRED CONFIG)
     if(TARGET c-ares::cares)
       set(_gRPC_CARES_LIBRARIES c-ares::cares)
     endif()
@@ -235,6 +223,7 @@
       endif()
       if(TARGET protoc)
         set(_gRPC_PROTOBUF_PROTOC protoc)
+        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protoc>)
       endif()
     else()
         message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
@@ -244,7 +233,7 @@
       set(gRPC_INSTALL FALSE)
     endif()
   elseif("<%text>${gRPC_PROTOBUF_PROVIDER}</%text>" STREQUAL "package")
-    find_package(Protobuf <%text>${gRPC_PROTOBUF_PACKAGE_TYPE}</%text>)
+    find_package(Protobuf REQUIRED <%text>${gRPC_PROTOBUF_PACKAGE_TYPE}</%text>)
     if(Protobuf_FOUND OR PROTOBUF_FOUND)
       if(TARGET protobuf::<%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
         set(_gRPC_PROTOBUF_LIBRARIES protobuf::<%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
@@ -258,8 +247,10 @@
       endif()
       if(TARGET protobuf::protoc)
         set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
+        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
       else()
         set(_gRPC_PROTOBUF_PROTOC <%text>${PROTOBUF_PROTOC_EXECUTABLE}</%text>)
+        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE <%text>${PROTOBUF_PROTOC_EXECUTABLE}</%text>)
       endif()
       set(_gRPC_FIND_PROTOBUF "if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND)\n  find_package(Protobuf <%text>${gRPC_PROTOBUF_PACKAGE_TYPE}</%text>)\nendif()")
     endif()
@@ -287,11 +278,9 @@
       set(gRPC_INSTALL FALSE)
     endif()
   elseif("<%text>${gRPC_SSL_PROVIDER}</%text>" STREQUAL "package")
-    find_package(OpenSSL)
-    if(TARGET OpenSSL::SSL)
-      set(_gRPC_SSL_LIBRARIES OpenSSL::SSL)
-    endif()
-    set(_gRPC_FIND_SSL "if(NOT OpenSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
+    find_package(OpenSSL REQUIRED)
+    set(_gRPC_SSL_LIBRARIES <%text>${OPENSSL_LIBRARIES}</%text>)
+    set(_gRPC_FIND_SSL "if(NOT OPENSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
   endif()
 
   if("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" STREQUAL "module")
@@ -384,7 +373,7 @@
                <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}_mock.grpc.pb.h"</%text>
                <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc"</%text>
                <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h"</%text>
-        COMMAND <%text>$<TARGET_FILE:${_gRPC_PROTOBUF_PROTOC}></%text>
+        COMMAND <%text>${_gRPC_PROTOBUF_PROTOC_EXECUTABLE}</%text>
         ARGS --grpc_out=<%text>generate_mock_code=true:${_gRPC_PROTO_GENS_DIR}</%text>
              --cpp_out=<%text>${_gRPC_PROTO_GENS_DIR}</%text>
              --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
@@ -523,16 +512,14 @@
   % endfor
 
   target_include_directories(${lib.name}
-    PUBLIC <%text>$<INSTALL_INTERFACE:include> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include></%text>
+    PUBLIC <%text>$<INSTALL_INTERFACE:${gRPC_INSTALL_INCLUDEDIR}> $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include></%text>
     PRIVATE <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>
     PRIVATE <%text>${BORINGSSL_ROOT_DIR}</%text>/include
     PRIVATE <%text>${PROTOBUF_ROOT_DIR}</%text>/src
     PRIVATE <%text>${ZLIB_INCLUDE_DIR}</%text>
     PRIVATE <%text>${BENCHMARK}</%text>/include
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
-    PRIVATE <%text>${CARES_BUILD_INCLUDE_DIR}</%text>
     PRIVATE <%text>${CARES_INCLUDE_DIR}</%text>
-    PRIVATE <%text>${CARES_PLATFORM_INCLUDE_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/cares/cares
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
   % if lib.build in ['test', 'private'] and lib.language == 'c++':
@@ -603,9 +590,7 @@
     PRIVATE <%text>${BENCHMARK_ROOT_DIR}</%text>/include
     PRIVATE <%text>${ZLIB_ROOT_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
-    PRIVATE <%text>${CARES_BUILD_INCLUDE_DIR}</%text>
     PRIVATE <%text>${CARES_INCLUDE_DIR}</%text>
-    PRIVATE <%text>${CARES_PLATFORM_INCLUDE_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/cares/cares
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
   % if tgt.build in ['test', 'private'] and tgt.language == 'c++':
@@ -646,7 +631,7 @@
   endif()
 
   foreach(_config gRPCConfig gRPCConfigVersion)
-    configure_file(tools/cmake/<%text>${_config}</%text>.cmake.in
+    configure_file(cmake/<%text>${_config}</%text>.cmake.in
       <%text>${_config}</%text>.cmake @ONLY)
     install(FILES <%text>${CMAKE_CURRENT_BINARY_DIR}/${_config}</%text>.cmake
       DESTINATION <%text>${gRPC_INSTALL_CMAKEDIR}</%text>
diff --git a/templates/config.m4.template b/templates/config.m4.template
index f91893c2bd..cd93fbd0fb 100644
--- a/templates/config.m4.template
+++ b/templates/config.m4.template
@@ -14,7 +14,7 @@
     LIBS="-lpthread $LIBS"
 
     CFLAGS="-Wall -Werror -Wno-parentheses-equality -Wno-unused-value -std=c11"
-    CXXFLAGS="-std=c++11"
+    CXXFLAGS="-std=c++11 -fno-exceptions -fno-rtti"
     GRPC_SHARED_LIBADD="-lpthread $GRPC_SHARED_LIBADD"
     PHP_REQUIRE_CXX()
     PHP_ADD_LIBRARY(pthread)
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index 616f2cbbff..6077f8098d 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -171,6 +171,7 @@
                         'test/core/end2end/end2end_tests.{c,h}',
                         'test/core/end2end/end2end_test_utils.c',
                         'test/core/end2end/tests/*.{c,h}',
+                        'test/core/end2end/fixtures/*.h',
                         'test/core/end2end/data/*.{c,h}',
                         'test/core/util/debugger_macros.{c,h}',
                         'test/core/util/test_config.{c,h}',
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
index 62a6d37c3c..5c92f9f9c4 100644
--- a/templates/gRPC.podspec.template
+++ b/templates/gRPC.podspec.template
@@ -42,12 +42,9 @@
     s.header_dir = name
 
     src_dir = 'src/objective-c/GRPCClient'
-    s.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
-    s.private_header_files = "#{src_dir}/private/*.h"
-    s.header_mappings_dir = "#{src_dir}"
 
-    s.dependency 'gRPC-Core', version
     s.dependency 'gRPC-RxLibrary', version
+    s.default_subspec = 'Main'
 
     # Certificates, to be able to establish TLS connections:
     s.resource_bundles = { 'gRPCCertificates' => ['etc/roots.pem'] }
@@ -56,4 +53,22 @@
       # This is needed by all pods that depend on gRPC-RxLibrary:
       'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
     }
+
+    s.subspec 'Main' do |ss|
+      ss.header_mappings_dir = "#{src_dir}"
+
+      ss.source_files = "#{src_dir}/*.{h,m}", "#{src_dir}/**/*.{h,m}"
+      ss.exclude_files = "#{src_dir}/GRPCCall+GID.{h,m}"
+      ss.private_header_files = "#{src_dir}/private/*.h"
+
+      ss.dependency 'gRPC-Core', version
+    end
+
+    s.subspec 'GID' do |ss|
+      ss.header_mappings_dir = "#{src_dir}"
+
+      ss.source_files = "#{src_dir}/GRPCCall+GID.{h,m}"
+
+      ss.dependency 'Google/SignIn'
+    end
   end
diff --git a/templates/grpc.gemspec.template b/templates/grpc.gemspec.template
index 8b5799306a..215d5f9df9 100644
--- a/templates/grpc.gemspec.template
+++ b/templates/grpc.gemspec.template
@@ -31,16 +31,17 @@
 
     s.add_dependency 'google-protobuf', '~> 3.1'
     s.add_dependency 'googleauth',      '~> 0.5.1'
+    s.add_dependency 'googleapis-common-protos-types', '~> 1.0.0'
 
     s.add_development_dependency 'bundler',            '~> 1.9'
     s.add_development_dependency 'facter',             '~> 2.4'
     s.add_development_dependency 'logging',            '~> 2.0'
-    s.add_development_dependency 'simplecov',          '~> 0.9'
-    s.add_development_dependency 'rake',               '~> 10.4'
+    s.add_development_dependency 'simplecov',          '~> 0.14.1'
+    s.add_development_dependency 'rake',               '~> 12.0'
     s.add_development_dependency 'rake-compiler',      '~> 1.0'
     s.add_development_dependency 'rake-compiler-dock', '~> 0.5.1'
-    s.add_development_dependency 'rspec',              '~> 3.2'
-    s.add_development_dependency 'rubocop',            '~> 0.30.0'
+    s.add_development_dependency 'rspec',              '~> 3.6'
+    s.add_development_dependency 'rubocop',            '~> 0.49.1'
     s.add_development_dependency 'signet',             '~> 0.7.0'
 
     s.extensions = %w(src/ruby/ext/grpc/extconf.rb)
diff --git a/templates/package.xml.template b/templates/package.xml.template
index 27cc4d01a9..f10f75b8c0 100644
--- a/templates/package.xml.template
+++ b/templates/package.xml.template
@@ -12,7 +12,7 @@
     <email>grpc-packages@google.com</email>
     <active>yes</active>
    </lead>
-   <date>2017-05-22</date>
+   <date>2017-08-24</date>
    <time>16:06:07</time>
    <version>
     <release>${settings.php_version.php()}</release>
@@ -24,13 +24,12 @@
    </stability>
    <license>Apache 2.0</license>
    <notes>
-  - Fixed some memory leaks #9559, #10996
-  - Disabled cares dependency from gRPC C Core #10940
-  - De-coupled protobuf dependency #11112
-  - Fixed extension reported version #10842
-  - Added config.w32 for Windows support #8161
-  - Fixed PHP distrib test after cc files were added #11193
-  - Fixed protoc plugin comment escape bug #11025
+  - Channel are now by default persistent #11878
+  - Some bug fixes from 1.4 branch #12109, #12123
+  - Fixed hang bug when fork() was used #11814
+  - License changed to Apache 2.0
+  - Added support for php_namespace option in codegen plugin #11886
+  - Updated gRPC C Core library version 1.6
    </notes>
    <contents>
     <dir baseinstalldir="/" name="/">
diff --git a/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template b/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
index b8223417b7..196c405468 100644
--- a/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
+++ b/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
@@ -103,7 +103,7 @@
     s.preserve_paths = plugin
 
     # Restrict the protoc version to the one supported by this plugin.
-    s.dependency '!ProtoCompiler', '3.3.0'
+    s.dependency '!ProtoCompiler', '3.4.0'
     # For the Protobuf dependency not to complain:
     s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
diff --git a/templates/src/python/grpcio_testing/grpc_version.py.template b/templates/src/python/grpcio_testing/grpc_version.py.template
new file mode 100644
index 0000000000..74db811d60
--- /dev/null
+++ b/templates/src/python/grpcio_testing/grpc_version.py.template
@@ -0,0 +1,19 @@
+%YAML 1.2
+--- |
+  # Copyright 2017 gRPC authors.
+  #
+  # Licensed under the Apache License, Version 2.0 (the "License");
+  # you may not use this file except in compliance with the License.
+  # You may obtain a copy of the License at
+  #
+  #     http://www.apache.org/licenses/LICENSE-2.0
+  #
+  # Unless required by applicable law or agreed to in writing, software
+  # distributed under the License is distributed on an "AS IS" BASIS,
+  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  # See the License for the specific language governing permissions and
+  # limitations under the License.
+
+  # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_testing/grpc_version.py.template`!!!
+
+  VERSION='${settings.python_version.pep440()}'
diff --git a/templates/test/cpp/naming/resolver_component_tests_defs.include b/templates/test/cpp/naming/resolver_component_tests_defs.include
new file mode 100644
index 0000000000..6fa91c741a
--- /dev/null
+++ b/templates/test/cpp/naming/resolver_component_tests_defs.include
@@ -0,0 +1,92 @@
+<%def name="resolver_component_tests(tests)">#!/bin/bash
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file is auto-generated
+
+set -ex
+
+# all command args required in this set order
+FLAGS_test_bin_path=`echo "$1" | grep '\--test_bin_path=' | cut -d "=" -f 2`
+FLAGS_dns_server_bin_path=`echo "$2" | grep '\--dns_server_bin_path=' | cut -d "=" -f 2`
+FLAGS_records_config_path=`echo "$3" | grep '\--records_config_path=' | cut -d "=" -f 2`
+FLAGS_test_dns_server_port=`echo "$4" | grep '\--test_dns_server_port=' | cut -d "=" -f 2`
+
+for cmd_arg in "$FLAGS_test_bin_path" "$FLAGS_dns_server_bin_path" "$FLAGS_records_config_path" "$FLAGS_test_dns_server_port"; do
+  if [[ "$cmd_arg" == "" ]]; then
+    echo "Missing a CMD arg" && exit 1
+  fi
+done
+
+if [[ "$GRPC_DNS_RESOLVER" != "" && "$GRPC_DNS_RESOLVER" != ares ]]; then
+  echo "This test only works under GRPC_DNS_RESOLVER=ares. Have GRPC_DNS_RESOLVER=$GRPC_DNS_RESOLVER" && exit 1
+fi
+export GRPC_DNS_RESOLVER=ares
+
+"$FLAGS_dns_server_bin_path" --records_config_path="$FLAGS_records_config_path" --port="$FLAGS_test_dns_server_port" 2>&1 > /dev/null &
+DNS_SERVER_PID=$!
+echo "Local DNS server started. PID: $DNS_SERVER_PID"
+
+# Health check local DNS server TCP and UDP ports
+for ((i=0;i<30;i++));
+do
+  echo "Retry health-check DNS query to local DNS server over tcp and udp"
+  RETRY=0
+  dig A health-check-local-dns-server-is-alive.resolver-tests.grpctestingexp. @localhost -p "$FLAGS_test_dns_server_port" +tries=1 +timeout=1 | grep '123.123.123.123' || RETRY=1
+  dig A health-check-local-dns-server-is-alive.resolver-tests.grpctestingexp. @localhost -p "$FLAGS_test_dns_server_port" +tries=1 +timeout=1 +tcp | grep '123.123.123.123' || RETRY=1
+  if [[ "$RETRY" == 0 ]]; then
+    break
+  fi;
+  sleep 0.1
+done
+
+if [[ $RETRY == 1 ]]; then
+  echo "FAILED TO START LOCAL DNS SERVER"
+  kill -SIGTERM $DNS_SERVER_PID
+  wait
+  exit 1
+fi
+
+function terminate_all {
+  echo "Received signal. Terminating $! and $DNS_SERVER_PID"
+  kill -SIGTERM $! || true
+  kill -SIGTERM $DNS_SERVER_PID || true
+  wait
+  exit 1
+}
+
+trap terminate_all SIGTERM SIGINT
+
+EXIT_CODE=0
+# TODO: this test should check for GCE residency and skip tests using _grpclb._tcp.* SRV records once GCE residency checks are made
+# in the resolver.
+
+% for test in tests:
+$FLAGS_test_bin_path \\
+
+  --target_name='${test['target_name']}' \\
+
+  --expected_addrs='${test['expected_addrs']}' \\
+
+  --expected_chosen_service_config='${test['expected_chosen_service_config']}' \\
+
+  --expected_lb_policy='${test['expected_lb_policy']}' \\
+
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+% endfor
+kill -SIGTERM $DNS_SERVER_PID || true
+wait
+exit $EXIT_CODE</%def>
diff --git a/templates/test/cpp/naming/resolver_component_tests_runner.sh.template b/templates/test/cpp/naming/resolver_component_tests_runner.sh.template
new file mode 100644
index 0000000000..86772dd141
--- /dev/null
+++ b/templates/test/cpp/naming/resolver_component_tests_runner.sh.template
@@ -0,0 +1,4 @@
+%YAML 1.2
+--- |
+  <%namespace file="resolver_component_tests_defs.include" import="*"/>\
+  ${resolver_component_tests(resolver_component_test_cases)}
diff --git a/templates/tools/dockerfile/apt_get_basic.include b/templates/tools/dockerfile/apt_get_basic.include
index 9237e7dace..6e19e65157 100644
--- a/templates/tools/dockerfile/apt_get_basic.include
+++ b/templates/tools/dockerfile/apt_get_basic.include
@@ -6,6 +6,7 @@ RUN apt-get update && apt-get install -y ${'\\'}
   bzip2 ${'\\'}
   ccache ${'\\'}
   curl ${'\\'}
+  dnsutils ${'\\'}
   gcc ${'\\'}
   gcc-multilib ${'\\'}
   git ${'\\'}
diff --git a/templates/tools/dockerfile/clang_format.include b/templates/tools/dockerfile/clang_format.include
index 9a2b60ba8c..81bd2be797 100644
--- a/templates/tools/dockerfile/clang_format.include
+++ b/templates/tools/dockerfile/clang_format.include
@@ -1,5 +1,5 @@
 RUN apt-get update && apt-get -y install wget
-RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
 RUN apt-get update && apt-get -y install clang-format-3.8
diff --git a/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
index 69cd4034b0..1ab667c95d 100644
--- a/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
+++ b/templates/tools/dockerfile/grpc_clang_format/Dockerfile.template
@@ -14,9 +14,10 @@
   # See the License for the specific language governing permissions and
   # limitations under the License.
   
-  FROM ubuntu:15.10
+  FROM debian:jessie
   
   <%include file="../clang_format.include"/>
   ADD clang_format_all_the_things.sh /
   CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]
   
+  
\ No newline at end of file
diff --git a/templates/tools/dockerfile/python_deps.include b/templates/tools/dockerfile/python_deps.include
index 2c12981418..94b854ad21 100644
--- a/templates/tools/dockerfile/python_deps.include
+++ b/templates/tools/dockerfile/python_deps.include
@@ -11,4 +11,4 @@ RUN apt-get update && apt-get install -y ${'\\'}
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
diff --git a/templates/tools/dockerfile/test/sanity/Dockerfile.template b/templates/tools/dockerfile/test/sanity/Dockerfile.template
index 3f9ea32233..bf34c0ab0f 100644
--- a/templates/tools/dockerfile/test/sanity/Dockerfile.template
+++ b/templates/tools/dockerfile/test/sanity/Dockerfile.template
@@ -14,7 +14,7 @@
   # See the License for the specific language governing permissions and
   # limitations under the License.
   
-  FROM ubuntu:15.10
+  FROM debian:jessie
   
   <%include file="../../apt_get_basic.include"/>
   <%include file="../../gcp_api_libraries.include"/>
@@ -33,14 +33,23 @@
   
   #======================================
   # More sanity test dependencies (bazel)
-  RUN apt-get install -y openjdk-8-jdk
-  # Check out Bazel version 0.4.1 since this version allows running
-  # ./compile.sh without a local protoc dependency
-  # TODO(mattkwong): install dependencies to support latest Bazel version if newer
-  # version is needed
-  RUN git clone https://github.com/bazelbuild/bazel.git /bazel && ${"\\"}
-    cd /bazel && git checkout tags/0.4.1 && ./compile.sh
-  RUN ln -s /bazel/output/bazel /bin/
+  RUN echo "deb http://http.debian.net/debian jessie-backports main" >> /etc/apt/sources.list
+  RUN apt-get update
+  RUN apt-get install -y -t jessie-backports openjdk-8-jdk
+
+  #========================
+  # Bazel installation
+  RUN echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" > /etc/apt/sources.list.d/bazel.list
+  RUN curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
+  RUN apt-get -y update
+  RUN apt-get -y install bazel
+
+  # Pin Bazel to 0.4.4
+  # Installing Bazel via apt-get first is required before installing 0.4.4 to
+  # allow gRPC to build without errors. See https://github.com/grpc/grpc/issues/10553
+  RUN curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/0.4.4/bazel-0.4.4-installer-linux-x86_64.sh
+  RUN chmod +x ./bazel-0.4.4-installer-linux-x86_64.sh
+  RUN ./bazel-0.4.4-installer-linux-x86_64.sh
   
   <%include file="../../clang_format.include"/>
   <%include file="../../run_tests_addons.include"/>
diff --git a/templates/vsprojects/buildtests_c.sln.template b/templates/vsprojects/buildtests_c.sln.template
deleted file mode 100644
index 9b18c7445d..0000000000
--- a/templates/vsprojects/buildtests_c.sln.template
+++ /dev/null
@@ -1,13 +0,0 @@
-%YAML 1.2
---- |
-  <%namespace file="sln_defs.include" import="gen_solution"/>\
-  <%
-  solution_projects = [
-    p for p in vsprojects
-    if p.build in ['test', 'tool']
-    and p.language == 'c'
-    and not p.boringssl
-    and not p.zlib
-  ]
-  %>\
-  ${gen_solution(solution_projects, use_dlls='yes')}
diff --git a/templates/vsprojects/cpptest.props.template b/templates/vsprojects/cpptest.props.template
deleted file mode 100644
index 14169d6ddf..0000000000
--- a/templates/vsprojects/cpptest.props.template
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ImportGroup Label="PropertySheets" />
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup />
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <AdditionalIncludeDirectories>$(SolutionDir)\..;$(SolutionDir)\..\include;$(SolutionDir)\..\third_party\protobuf\src;$(SolutionDir)\..\third_party\gtest\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_SCL_SECURE_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <WarningLevel>EnableAllWarnings</WarningLevel>
-    </ClCompile>
-    <Link>
-      <AdditionalDependencies>grpc++_test_util.lib;grpc_test_util.lib;gpr_test_util.lib;gtestd.lib;gflags.lib;shlwapi.lib;gpr.lib;grpc.lib;grpc++.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)\..\third_party\gtest\msvc\gtest\Debug;$(SolutionDir)\..\third_party\gflags\lib\Debug;$(SolutionDir)\..\Debug;$(SolutionDir)\..\packages\grpc.dependencies.openssl.${vspackages_dict['grpc.dependencies.openssl'].version}\build\native\lib\$(PlatformToolset)\$(Platform)\$(Configuration)\static;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup />
-</Project>
diff --git a/templates/vsprojects/global.props.template b/templates/vsprojects/global.props.template
deleted file mode 100644
index c53e4f16e3..0000000000
--- a/templates/vsprojects/global.props.template
+++ /dev/null
@@ -1,22 +0,0 @@
-%YAML 1.2
---- |
-  <?xml version="1.0" encoding="utf-8"?>
-  <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <ImportGroup Label="PropertySheets" />
-    <PropertyGroup Label="UserMacros" />
-    <PropertyGroup>
-      <Jenkins>false</Jenkins>
-    </PropertyGroup>
-    <ItemDefinitionGroup>
-      <ClCompile>
-        <AdditionalIncludeDirectories>$(SolutionDir)\..;$(SolutionDir)\..\include;$(SolutionDir)\..\third_party\protobuf\src;${';'.join('$(SolutionDir)\\packages\\%s.%s\\build\\native\\include' % (p.name, p.version) for p in vspackages)};%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-        <PreprocessorDefinitions>_WIN32_WINNT=0x600;_SCL_SECURE_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-        <WarningLevel>EnableAllWarnings</WarningLevel>
-      </ClCompile>
-      <Link>
-        <!-- LNK4271 pollutes test output. See #4521 -->
-        <AdditionalOptions>/ignore:4217 %(AdditionalOptions)</AdditionalOptions>
-      </Link>
-    </ItemDefinitionGroup>
-    <ItemGroup />
-  </Project>
diff --git a/templates/vsprojects/grpc.sln.template b/templates/vsprojects/grpc.sln.template
deleted file mode 100644
index 0b28e936be..0000000000
--- a/templates/vsprojects/grpc.sln.template
+++ /dev/null
@@ -1,7 +0,0 @@
-%YAML 1.2
---- |
-  <%namespace file="sln_defs.include" import="gen_solution"/>\
-  <%
-  solution_projects = [p for p in vsprojects if p.build not in ['protoc', 'test', 'fuzzer'] and p.language in ['c', 'c++'] and p.vs_proj_dir == '.' and not (p.build == 'private' and p.language == 'c++') and not p.name in ['z', 'boringssl', 'grpc++_reflection']]
-  %>\
-  ${gen_solution(solution_projects, use_dlls='yes')}
diff --git a/templates/vsprojects/grpc_csharp_ext.sln.template b/templates/vsprojects/grpc_csharp_ext.sln.template
deleted file mode 100644
index 9b09f5ef28..0000000000
--- a/templates/vsprojects/grpc_csharp_ext.sln.template
+++ /dev/null
@@ -1,7 +0,0 @@
-%YAML 1.2
---- |
-  <%namespace file="sln_defs.include" import="gen_solution"/>\
-  <%
-  solution_projects = [p for p in vsprojects if p.build == 'all' and p.language == 'csharp']
-  %>\
-  ${gen_solution(solution_projects, use_dlls='only')}
diff --git a/templates/vsprojects/grpc_protoc_plugins.sln.template b/templates/vsprojects/grpc_protoc_plugins.sln.template
deleted file mode 100644
index 06f182b601..0000000000
--- a/templates/vsprojects/grpc_protoc_plugins.sln.template
+++ /dev/null
@@ -1,7 +0,0 @@
-%YAML 1.2
---- |
-  <%namespace file="sln_defs.include" import="gen_solution"/>\
-  <%
-  solution_projects = [p for p in vsprojects if p.build == 'protoc']
-  %>\
-  ${gen_solution(solution_projects)}
diff --git a/templates/vsprojects/openssl.props.template b/templates/vsprojects/openssl.props.template
deleted file mode 100644
index 32c3604405..0000000000
--- a/templates/vsprojects/openssl.props.template
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>

-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

-  <ImportGroup Label="PropertySheets" />

-  <PropertyGroup Label="UserMacros" />

-  <PropertyGroup />

-  <ItemDefinitionGroup>

-    <Link>

-      <AdditionalDependencies>ssleay32.lib;libeay32.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>$(SolutionDir)\packages\grpc.dependencies.openssl.${vspackages_dict['grpc.dependencies.openssl'].version}\build\native\lib\$(PlatformToolset)\$(Platform)\$(Configuration)\static;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>

-    </Link>

-  </ItemDefinitionGroup>

-  <ItemGroup />

-</Project>

diff --git a/templates/vsprojects/packages.include b/templates/vsprojects/packages.include
deleted file mode 100644
index f3c57634f9..0000000000
--- a/templates/vsprojects/packages.include
+++ /dev/null
@@ -1,53 +0,0 @@
-<%def name="get_name(vspackages, package)">${''.join('%s.%s' % (p.name, p.version) for p in vspackages if p.name == package)}</%def>
-<%def name="gen_packages_config(packages)">\
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  % for package in vspackages:
-  %  if packages == 'all' or package.name in packages:
-  <package id="${package.name}" version="${package.version}" targetFramework="Native" />
-  %   if package.redist:
-  <package id="${package.name}.redist" version="${package.version}" targetFramework="Native" />
-  %   endif
-  %  endif
-  % endfor
-</packages>
-</%def>\
-<%def name="gen_package_props(packages, repo_root)">\
-  % for package in vspackages:
-  %  if packages == 'all' or package.name in packages:
-  %   if package.props:
-  <Import Project="${repo_root}\vsprojects\packages\${package.name}.${package.version}\build\native\${package.name}.props" Condition="Exists('${repo_root}\vsprojects\packages\${package.name}.${package.version}\build\native\${package.version}.props')" />
-  %   endif
-  %  endif
-  % endfor
-</%def>\
-<%def name="gen_package_targets(packages, repo_root)">\
-  % for package in vspackages:
-  %  if packages == 'all' or package.name in packages:
-  %   if package.redist:
-  <Import Project="${repo_root}\vsprojects\packages\${package.name}.redist.${package.version}\build\native\${package.name}.redist.targets" Condition="Exists('${repo_root}\vsprojects\packages\${package.name}.redist.${package.version}\build\native\grpc.dependencies\${package.name}.targets')" />
-  %   endif
-  <Import Project="${repo_root}\vsprojects\packages\${package.name}.${package.version}\build\native\${package.name}.targets" Condition="Exists('${repo_root}\vsprojects\packages\${package.name}.${package.version}\build\native\grpc.dependencies\${package.name}.targets')" />
-  %  endif
-  % endfor
-</%def>\
-<%def name="check_file_inner(file)"><Error Condition="!Exists('${file}')" Text="$([System.String]::Format('$(ErrorText)', '${file}')" /></%def>\
-<%def name="check_file(file, repo_root, package)">${check_file_inner(file % {'root':repo_root, 'name':package.name, 'version':package.version})}</%def>\
-<%def name="gen_package_ensure(packages, repo_root)">\
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    % for package in vspackages:
-    %  if packages == 'all' or package.name in packages:
-    %   if package.redist:
-    ${check_file('%(root)s\\vsprojects\\packages\\%(name)s.redist.%(version)s\\build\\native\\%(name)s.redist.targets', repo_root, package)}
-    %   endif
-    %   if package.props:
-    ${check_file('%(root)s\\vsprojects\\packages\\%(name)s.%(version)s\\build\\native\\%(name)s.props', repo_root, package)}
-    %   endif
-    ${check_file('%(root)s\\vsprojects\\packages\\%(name)s.%(version)s\\build\\native\\%(name)s.targets', repo_root, package)}
-    %  endif
-    % endfor
-  </Target>
-</%def>\
diff --git a/templates/vsprojects/protobuf.props.template b/templates/vsprojects/protobuf.props.template
deleted file mode 100644
index 3ae7c745de..0000000000
--- a/templates/vsprojects/protobuf.props.template
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>

-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

-  <ImportGroup Label="PropertySheets" />

-  <PropertyGroup Label="UserMacros" />

-  <PropertyGroup />

-  <ItemDefinitionGroup>

-    <Link>

-      <AdditionalDependencies>libprotobuf.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>$(SolutionDir)\..\third_party\protobuf\cmake\build\solution\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>

-    </Link>

-  </ItemDefinitionGroup>

-  <ItemGroup />

-</Project>

diff --git a/templates/vsprojects/protoc.props.template b/templates/vsprojects/protoc.props.template
deleted file mode 100644
index 65771fc5a3..0000000000
--- a/templates/vsprojects/protoc.props.template
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>

-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

-  <ImportGroup Label="PropertySheets" />

-  <PropertyGroup Label="UserMacros" />

-  <PropertyGroup />

-  <ItemDefinitionGroup>

-    <ClCompile>

-      <DisableSpecificWarnings>4244;4267;4800;%(DisableSpecificWarnings)</DisableSpecificWarnings>

-    </ClCompile>

-    <Link>

-      <AdditionalDependencies>libprotoc.lib;%(AdditionalDependencies)</AdditionalDependencies>

-      <AdditionalLibraryDirectories>$(SolutionDir)\..\third_party\protobuf\cmake\build\solution\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>

-    </Link>

-  </ItemDefinitionGroup>

-  <ItemGroup />

-</Project>

diff --git a/templates/vsprojects/sln_defs.include b/templates/vsprojects/sln_defs.include
deleted file mode 100644
index cc525781a0..0000000000
--- a/templates/vsprojects/sln_defs.include
+++ /dev/null
@@ -1,119 +0,0 @@
-<%def name="gen_solution(solution_top_level_projects, use_dlls = 'no')">\
-## Template for Visual Studio solution
-## based on http://msdn.microsoft.com/en-us/library/bb165951(v=vs.90).aspx
-## NOTE: tabs in this file are needed by Visual Studio to correctly interpret
-## the file.
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2013
-VisualStudioVersion = 12.0.21005.1
-MinimumVisualStudioVersion = 10.0.40219.1
-<%
-## Visual Studio uses GUIDs for project types
-## http://msdn.microsoft.com/en-us/library/hb23x61k%28v=vs.80%29.aspx
-cpp_proj_type = "{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}"
-
-all_projects = set()
-for project in solution_top_level_projects:
-  for dep in project.deps:
-    all_projects.add(dep)
-  all_projects.add(project.name)
-
-solution_projects = [vsproject_dict[project] for project in sorted(list(all_projects))]
-%>\
-% for project in solution_projects:
-Project("${cpp_proj_type}") = "${project.name}", "vcxproj\${project.vs_proj_dir}\${project.name}\${project.name}.vcxproj", "${project.vs_project_guid}"
-	ProjectSection(myProperties) = preProject
-  % if project.is_library:
-        	lib = "True"
-  % else:
-        	lib = "False"
-  % endif
-	EndProjectSection
-  % if project.get('deps', None):
-	ProjectSection(ProjectDependencies) = postProject
-    % for dep in project.get('deps', []):
-		${vsproject_dict[dep].vs_project_guid} = ${vsproject_dict[dep].vs_project_guid}
-    % endfor
-	EndProjectSection
-  % endif
-EndProject
-% endfor
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Debug|x64 = Debug|x64
-% if use_dlls == 'yes':
-		Debug-DLL|Win32 = Debug-DLL|Win32
-		Debug-DLL|x64 = Debug-DLL|x64
-% endif
-		Release|Win32 = Release|Win32
-		Release|x64 = Release|x64
-% if use_dlls == 'yes':
-		Release-DLL|Win32 = Release-DLL|Win32
-		Release-DLL|x64 = Release-DLL|x64
-% endif
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-% for project in solution_projects:
-  % if use_dlls != 'only':
-		${project.vs_project_guid}.Debug|Win32.ActiveCfg = Debug|Win32
-		${project.vs_project_guid}.Debug|x64.ActiveCfg = Debug|x64
-		${project.vs_project_guid}.Release|Win32.ActiveCfg = Release|Win32
-		${project.vs_project_guid}.Release|x64.ActiveCfg = Release|x64
-    % if project.get('dll', False) != 'only':
-		${project.vs_project_guid}.Debug|Win32.Build.0 = Debug|Win32
-		${project.vs_project_guid}.Debug|x64.Build.0 = Debug|x64
-		${project.vs_project_guid}.Release|Win32.Build.0 = Release|Win32
-		${project.vs_project_guid}.Release|x64.Build.0 = Release|x64
-    % endif
-  % endif
-  % if use_dlls == 'yes':
-    % if project.get('dll', False) == False:
-		${project.vs_project_guid}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		${project.vs_project_guid}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		${project.vs_project_guid}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		${project.vs_project_guid}.Debug-DLL|x64.Build.0 = Debug|x64
-		${project.vs_project_guid}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		${project.vs_project_guid}.Release-DLL|Win32.Build.0 = Release|Win32
-		${project.vs_project_guid}.Release-DLL|x64.ActiveCfg = Release|x64
-		${project.vs_project_guid}.Release-DLL|x64.Build.0 = Release|x64
-    % else:
-		${project.vs_project_guid}.Debug-DLL|Win32.ActiveCfg = Debug-DLL|Win32
-		${project.vs_project_guid}.Debug-DLL|Win32.Build.0 = Debug-DLL|Win32
-		${project.vs_project_guid}.Debug-DLL|x64.ActiveCfg = Debug-DLL|x64
-		${project.vs_project_guid}.Debug-DLL|x64.Build.0 = Debug-DLL|x64
-		${project.vs_project_guid}.Release-DLL|Win32.ActiveCfg = Release-DLL|Win32
-		${project.vs_project_guid}.Release-DLL|Win32.Build.0 = Release-DLL|Win32
-		${project.vs_project_guid}.Release-DLL|x64.ActiveCfg = Release-DLL|x64
-		${project.vs_project_guid}.Release-DLL|x64.Build.0 = Release-DLL|x64
-    % endif
-  % endif
-  % if use_dlls == 'only':
-    % if project.get('dll', False) == True:
-		${project.vs_project_guid}.Debug|Win32.ActiveCfg = Debug-DLL|Win32
-		${project.vs_project_guid}.Debug|Win32.Build.0 = Debug-DLL|Win32
-		${project.vs_project_guid}.Debug|x64.ActiveCfg = Debug-DLL|x64
-		${project.vs_project_guid}.Debug|x64.Build.0 = Debug-DLL|x64
-		${project.vs_project_guid}.Release|Win32.ActiveCfg = Release-DLL|Win32
-		${project.vs_project_guid}.Release|Win32.Build.0 = Release-DLL|Win32
-		${project.vs_project_guid}.Release|x64.ActiveCfg = Release-DLL|x64
-		${project.vs_project_guid}.Release|x64.Build.0 = Release-DLL|x64
-    % else:
-		${project.vs_project_guid}.Debug|Win32.ActiveCfg = Debug|Win32
-		${project.vs_project_guid}.Debug|Win32.Build.0 = Debug|Win32
-		${project.vs_project_guid}.Debug|x64.ActiveCfg = Debug|x64
-		${project.vs_project_guid}.Debug|x64.Build.0 = Debug|x64
-		${project.vs_project_guid}.Release|Win32.ActiveCfg = Release|Win32
-		${project.vs_project_guid}.Release|Win32.Build.0 = Release|Win32
-		${project.vs_project_guid}.Release|x64.ActiveCfg = Release|x64
-		${project.vs_project_guid}.Release|x64.Build.0 = Release|x64
-    % endif
-  % endif
-% endfor
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
-</%def>\
diff --git a/templates/vsprojects/vcxproj.filters_defs.include b/templates/vsprojects/vcxproj.filters_defs.include
deleted file mode 100644
index e7df8db763..0000000000
--- a/templates/vsprojects/vcxproj.filters_defs.include
+++ /dev/null
@@ -1,70 +0,0 @@
-<%!
-  import re
-  import hashlib
-
-  def calc_to_filter(path):
-    return '\\'.join(path.split('/')[:-1])
-%>\
-<%def name="get_repo_root(proj)">${'$(SolutionDir)\..'}</%def>\
-<%def name="to_windows_path(path)">${path.replace('/','\\')}</%def>\
-<%def name="to_filter(path)">${calc_to_filter(path)}</%def>\
-<%def name="filter_to_guid(proj, filter)">${re.sub('(........)(....)(....)(....)', r'\1-\2-\3-\4-', hashlib.md5(''.join([filter, proj])).hexdigest())}</%def>\
-<%def name="gen_filters(name, collection)">\
-% for project in vsprojects:
-  % if project.name == name:
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  % if project.get('src',[]):
-  <ItemGroup>
-    % for src_name in project.src:
-    <ClCompile Include="${get_repo_root(project)}\${to_windows_path(src_name)}">
-      <Filter>${to_filter(src_name)}</Filter>
-    </ClCompile>
-    % endfor
-  </ItemGroup>
-  % endif
-  % if project.get('dll_def', None):
-  <ItemGroup>
-    <None Include="${get_repo_root(project)}\${to_windows_path(project.dll_def)}" />
-  </ItemGroup>
-  % endif
-  % if project.get('public_headers',[]):
-  <ItemGroup>
-    % for public_header in project.public_headers:
-    <ClInclude Include="${get_repo_root(project)}\${to_windows_path(public_header)}">
-      <Filter>${to_filter(public_header)}</Filter>
-    </ClInclude>
-    % endfor
-  </ItemGroup>
-  % endif
-  % if project.get('headers',[]):
-  <ItemGroup>
-    % for header in project.headers:
-    <ClInclude Include="${get_repo_root(project)}\${to_windows_path(header)}">
-      <Filter>${to_filter(header)}</Filter>
-    </ClInclude>
-    % endfor
-  </ItemGroup>
-  % endif
-<%
-  filters = set()
-  files = project.get('src', []) + project.get('public_headers', []) + project.get('headers', [])
-  for file in files:
-    filter = calc_to_filter(file)
-    paths = filter.split('\\')
-    for i in range(len(paths)):
-      filters.add('\\'.join(paths[:i + 1]))
-
-  filters = sorted(filters)
-%>
-  <ItemGroup>
-  % for filter in filters:
-    <Filter Include="${filter}">
-      <UniqueIdentifier>{${filter_to_guid(project.name, filter)}}</UniqueIdentifier>
-    </Filter>
-  % endfor
-  </ItemGroup>
-</Project>
-  % endif
-% endfor
-</%def>\
diff --git a/templates/vsprojects/vcxproj.template b/templates/vsprojects/vcxproj.template
deleted file mode 100644
index 0bb208f443..0000000000
--- a/templates/vsprojects/vcxproj.template
+++ /dev/null
@@ -1,20 +0,0 @@
-%YAML 1.2
----
-foreach: vsprojects
-output_name: ${selected.vs_proj_dir}/${selected.name}/${selected.name}.vcxproj
-cond: selected.build not in ['fuzzer']
-template: |
-  <%namespace file="vcxproj_defs.include" import="gen_project"/>\
-  ${gen_project(selected.name, vsprojects)}
----
-foreach: vsprojects
-output_name: ${selected.vs_proj_dir}/${selected.name}/${selected.name}.vcxproj.filters
-cond: selected.build not in ['fuzzer']
-template: |
-  <%namespace file="vcxproj.filters_defs.include" import="gen_filters"/>\
-  ${gen_filters(selected.name, vsprojects)}
----
-output_name: grpc/packages.config
-template: |
-  <%namespace file="packages.include" import="gen_packages_config"/>\
-  ${gen_packages_config('all')}
diff --git a/templates/vsprojects/vcxproj_defs.include b/templates/vsprojects/vcxproj_defs.include
deleted file mode 100644
index 72a077f762..0000000000
--- a/templates/vsprojects/vcxproj_defs.include
+++ /dev/null
@@ -1,256 +0,0 @@
-<%namespace file="packages.include" import="gen_package_props,gen_package_targets,gen_package_ensure"/>\
-<%def name="to_windows_path(path)">${path.replace('/','\\')}</%def>\
-<%def name="get_subsystem(is_library)">${'Windows' if is_library else 'Console'}</%def>\
-<%def name="item_definition_group(project, target, debug, dll, _64bit)">\
-<%
-  repo_root = '$(SolutionDir)\..'
-%>\
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='${'%s%s|%s' % ('Debug' if debug else 'Release', '-DLL' if dll else '', 'x64' if _64bit else 'Win32')}'">
-    <ClCompile>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>${'Disabled' if debug else 'MaxSpeed'}</Optimization>
-      <PreprocessorDefinitions>WIN32;${'_DEBUG' if debug else 'NDEBUG'};_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-% if not debug:
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-% endif
-      <SDLCheck>true</SDLCheck>
-      <RuntimeLibrary>${'MultiThreadedDebug' if debug else 'MultiThreaded'}</RuntimeLibrary>
-      <TreatWarningAsError>${'false' if target.boringssl else 'true'}</TreatWarningAsError>
-      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
-## Silence D9007 warning. See #4508
-      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
-    </ClCompile>
-    <Link>
-      <SubSystem>${get_subsystem(project.is_library)}</SubSystem>
-      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
-      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
-% if project.get("noentry", False):
-      <NoEntryPoint>true</NoEntryPoint>
-% endif
-% if project.get("dll_def", None):
-      <ModuleDefinitionFile>${repo_root}\${to_windows_path(project.dll_def)}</ModuleDefinitionFile>
-% endif
-% if not debug:
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-% endif
-    </Link>
-  </ItemDefinitionGroup>
-</%def>\
-<%def name="gen_project(name, collection)">\
-<%
-  target = None
-  for p in vsprojects:
-    if p.name == name:
-      project = p
-  for t in collection:
-    if t.name == name:
-      target = t
-  props = project.vs_props
-  packages = project.vs_packages
-  configuration_type = project.vs_config_type
-  project_guid = project.vs_project_guid
-  if target.build == 'test' and target.language == 'c++':
-    props.extend(['cpptest'])
-  if configuration_type == 'Application':
-    if target.build == 'protoc':
-      props.extend(['protoc', 'protobuf'])
-    else:
-      if target.language == 'c++':
-        props.extend(['protobuf'])
-      props.extend(['winsock', 'zlib'])
-      packages.extend(['grpc.dependencies.zlib'])
-      if target.get('secure', 'check'):
-        props.extend(['openssl'])
-        packages.extend(['grpc.dependencies.openssl'])
-  else:
-    props.extend(['winsock'])
-  props.extend(['global'])
-  props = sorted(list(set(props)))
-  packages = sorted(list(set(packages)))
-  dll = project.get('dll', False)
-  repo_root = '$(SolutionDir)\..'
-%>\
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-${gen_package_props(packages, repo_root)}\
-  <ItemGroup Label="ProjectConfigurations">
-% if dll and dll != 'only':
-    <ProjectConfiguration Include="Debug-DLL|Win32">
-      <Configuration>Debug-DLL</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug-DLL|x64">
-      <Configuration>Debug-DLL</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release-DLL|Win32">
-      <Configuration>Release-DLL</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release-DLL|x64">
-      <Configuration>Release-DLL</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-% endif
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>${project_guid if project_guid else project.vs_project_guid}</ProjectGuid>
-## Silence MSB8029 warning. See #4506
-    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
-## Use different location for intermediate directory to make path shorter than 260 characters.
-    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
-    <PlatformToolset>v100</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
-    <PlatformToolset>v110</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
-    <PlatformToolset>v120</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
-    <PlatformToolset>v140</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
-    <ConfigurationType>${configuration_type}</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
-    <ConfigurationType>${configuration_type}</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-% if dll and dll != 'only':
-  <PropertyGroup Condition="'$(Configuration)'=='Debug-DLL'" Label="Configuration">
-    <ConfigurationType>${configuration_type}</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)'=='Release-DLL'" Label="Configuration">
-    <ConfigurationType>${configuration_type}</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-  </PropertyGroup>
-% endif
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-    % for prop in props:
-    <Import Project="${repo_root}\vsprojects\${prop}.props" />
-    % endfor
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-% for config in ['Debug', 'Release']:# + (['Debug-DLL', 'Release-DLL'] if dll and dll != 'only' else []):
-  <PropertyGroup Condition="'$(Configuration)'=='${config}'">
-    <TargetName>${name}</TargetName>
-    % for package in vspackages:
-    %  if packages == 'all' or package.name in packages:
-    %   if package.get('linkage', None) is not None:
-    <Linkage-${package.name.replace('.', '_')}>${package.linkage}</Linkage-${package.name.replace('.', '_')}>
-    %   endif
-    <Configuration-${package.name.replace('.', '_')}>${config}</Configuration-${package.name.replace('.', '_')}>
-    %  endif
-    % endfor
-  </PropertyGroup>
-% endfor
-% if dll and dll != 'only':
-  ${item_definition_group(project, target, True, True, False)}
-  ${item_definition_group(project, target, True, True, True)}
-  ${item_definition_group(project, target, False, True, False)}
-  ${item_definition_group(project, target, False, True, True)}
-% endif
-  ${item_definition_group(project, target, True, False, False)}
-  ${item_definition_group(project, target, True, False, True)}
-  ${item_definition_group(project, target, False, False, False)}
-  ${item_definition_group(project, target, False, False, True)}
-  % if project.get('public_headers',[]):
-  <ItemGroup>
-    % for public_header in project.public_headers:
-    <ClInclude Include="${repo_root}\${to_windows_path(public_header)}" />
-    % endfor
-  </ItemGroup>
-  % endif
-  % if project.get('headers',[]):
-  <ItemGroup>
-    % for header in project.headers:
-    <ClInclude Include="${repo_root}\${to_windows_path(header)}" />
-    % endfor
-  </ItemGroup>
-  % endif
-  % if project.get('dll_def', None):
-  <ItemGroup>
-    <None Include="${repo_root}\${to_windows_path(project.dll_def)}" />
-  </ItemGroup>
-  % endif
-  % if project.get('src',[]):
-  <ItemGroup>
-    % for src_name in project.src:
-      % if src_name.endswith(".proto"):
-<% src_name_parts = src_name.split(".") %>\
-    <ClCompile Include="${repo_root}\${to_windows_path(src_name_parts[0] + ".pb.cc")}">
-    </ClCompile>
-    <ClInclude Include="${repo_root}\${to_windows_path(src_name_parts[0] + ".pb.h")}">
-    </ClInclude>
-    <ClCompile Include="${repo_root}\${to_windows_path(src_name_parts[0] + ".grpc.pb.cc")}">
-    </ClCompile>
-    <ClInclude Include="${repo_root}\${to_windows_path(src_name_parts[0] + ".grpc.pb.h")}">
-    </ClInclude>
-      % else:
-    <ClCompile Include="${repo_root}\${to_windows_path(src_name)}">
-    </ClCompile>
-      % endif
-    % endfor
-  </ItemGroup>
-  % else:
-  <ItemGroup>
-    <ClCompile Include="${repo_root}\${to_windows_path('vsprojects/dummy.c')}">
-    </ClCompile>
-  </ItemGroup>
-  % endif
-  % if project.get('deps',[]):
-  <ItemGroup>
-    % for dep in project.deps:
-    <ProjectReference Include="${repo_root}\vsprojects\vcxproj\${vsproject_dict[dep].vs_proj_dir}\${dep}\${dep}.vcxproj">
-      <Project>${vsproject_dict[dep].vs_project_guid}</Project>
-    </ProjectReference>
-    % endfor
-  </ItemGroup>
-  % endif
-  %if packages:
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
-  %endif
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-${gen_package_targets(packages, repo_root)}\
-  </ImportGroup>
-${gen_package_ensure(packages, repo_root)}\
-</Project>
-</%def>\
diff --git a/templates/vsprojects/winsock.props.template b/templates/vsprojects/winsock.props.template
deleted file mode 100644
index 7db6731bd3..0000000000
--- a/templates/vsprojects/winsock.props.template
+++ /dev/null
@@ -1,14 +0,0 @@
-%YAML 1.2
---- |
-  <?xml version="1.0" encoding="utf-8"?>
-  <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <ImportGroup Label="PropertySheets" />
-    <PropertyGroup Label="UserMacros" />
-    <PropertyGroup />
-    <ItemDefinitionGroup>
-      <Link>
-        <AdditionalDependencies>ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      </Link>
-    </ItemDefinitionGroup>
-    <ItemGroup />
-  </Project>
\ No newline at end of file
diff --git a/templates/vsprojects/zlib-dll.props.template b/templates/vsprojects/zlib-dll.props.template
deleted file mode 100644
index eb83ca7c0a..0000000000
--- a/templates/vsprojects/zlib-dll.props.template
+++ /dev/null
@@ -1,15 +0,0 @@
-%YAML 1.2
---- |
-  <?xml version="1.0" encoding="utf-8"?>
-  <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <ImportGroup Label="PropertySheets" />
-    <PropertyGroup Label="UserMacros" />
-    <PropertyGroup />
-    <ItemDefinitionGroup>
-      <Link>
-        <AdditionalDependencies>zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>
-        <AdditionalLibraryDirectories>$(SolutionDir)\packages\grpc.dependencies.zlib.${vspackages_dict['grpc.dependencies.zlib'].version}\build\native\lib\$(PlatformToolset)\$(Platform)\$(Configuration)\dynamic\cdecl;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      </Link>
-    </ItemDefinitionGroup>
-    <ItemGroup />
-  </Project>
diff --git a/templates/vsprojects/zlib.props.template b/templates/vsprojects/zlib.props.template
deleted file mode 100644
index d14a3942b7..0000000000
--- a/templates/vsprojects/zlib.props.template
+++ /dev/null
@@ -1,15 +0,0 @@
-%YAML 1.2
---- |
-  <?xml version="1.0" encoding="utf-8"?>
-  <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <ImportGroup Label="PropertySheets" />
-    <PropertyGroup Label="UserMacros" />
-    <PropertyGroup />
-    <ItemDefinitionGroup>
-      <Link>
-        <AdditionalDependencies>zlib.lib;%(AdditionalDependencies)</AdditionalDependencies>
-        <AdditionalLibraryDirectories>$(SolutionDir)\packages\grpc.dependencies.zlib.${vspackages_dict['grpc.dependencies.zlib'].version}\build\native\lib\$(PlatformToolset)\$(Platform)\$(Configuration)\static\cdecl;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      </Link>
-    </ItemDefinitionGroup>
-    <ItemGroup />
-  </Project>
diff --git a/test/core/bad_client/BUILD b/test/core/bad_client/BUILD
index 8cc9dfa77a..99593dc5f3 100644
--- a/test/core/bad_client/BUILD
+++ b/test/core/bad_client/BUILD
@@ -12,14 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/bad_client")
 
 licenses(["notice"])  # Apache v2
 
diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index c3964ca84b..383d1240cb 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -45,18 +45,18 @@ typedef struct {
 } thd_args;
 
 static void thd_func(void *arg) {
-  thd_args *a = arg;
+  thd_args *a = (thd_args *)arg;
   a->validator(a->server, a->cq, a->registered_method);
   gpr_event_set(&a->done_thd, (void *)1);
 }
 
 static void done_write(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  thd_args *a = arg;
+  thd_args *a = (thd_args *)arg;
   gpr_event_set(&a->done_write, (void *)1);
 }
 
 static void server_setup_transport(void *ts, grpc_transport *transport) {
-  thd_args *a = ts;
+  thd_args *a = (thd_args *)ts;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_server_setup_transport(&exec_ctx, a->server, transport, NULL,
                               grpc_server_get_channel_args(a->server));
@@ -64,7 +64,7 @@ static void server_setup_transport(void *ts, grpc_transport *transport) {
 }
 
 static void read_done(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-  gpr_event *read_done = arg;
+  gpr_event *read_done = (gpr_event *)arg;
   gpr_event_set(read_done, (void *)1);
 }
 
diff --git a/test/core/bad_ssl/BUILD b/test/core/bad_ssl/BUILD
index e13d43258a..0ea1520213 100644
--- a/test/core/bad_ssl/BUILD
+++ b/test/core/bad_ssl/BUILD
@@ -12,14 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/bad_ssl")
 
 licenses(["notice"])  # Apache v2
 
diff --git a/test/core/census/BUILD b/test/core/census/BUILD
index 988d9a813a..24fd2807d0 100644
--- a/test/core/census/BUILD
+++ b/test/core/census/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/census")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 grpc_cc_test(
     name = "context_test",
diff --git a/test/core/channel/BUILD b/test/core/channel/BUILD
index 18dd112eb7..5ac77c449b 100644
--- a/test/core/channel/BUILD
+++ b/test/core/channel/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/channel")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 grpc_cc_test(
     name = "channel_args_test",
@@ -46,3 +41,15 @@ grpc_cc_test(
         "//test/core/util:grpc_test_util",
     ],
 )
+
+grpc_cc_test(
+    name = "channel_stack_builder_test",
+    srcs = ["channel_stack_builder_test.c"],
+    language = "C",
+    deps = [
+        "//:gpr",
+        "//:grpc",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
+)
diff --git a/test/core/channel/channel_stack_builder_test.c b/test/core/channel/channel_stack_builder_test.c
new file mode 100644
index 0000000000..682efd1438
--- /dev/null
+++ b/test/core/channel/channel_stack_builder_test.c
@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "test/core/util/test_config.h"
+
+static grpc_error *channel_init_func(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
+
+static grpc_error *call_init_func(grpc_exec_ctx *exec_ctx,
+                                  grpc_call_element *elem,
+                                  const grpc_call_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
+
+static void channel_destroy_func(grpc_exec_ctx *exec_ctx,
+                                 grpc_channel_element *elem) {}
+
+static void call_destroy_func(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                              const grpc_call_final_info *final_info,
+                              grpc_closure *ignored) {}
+
+static void call_func(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
+                      grpc_transport_stream_op_batch *op) {}
+
+static void channel_func(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
+                         grpc_transport_op *op) {
+  if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+    GRPC_ERROR_UNREF(op->disconnect_with_error);
+  }
+  GRPC_CLOSURE_SCHED(exec_ctx, op->on_consumed, GRPC_ERROR_NONE);
+}
+
+bool g_replacement_fn_called = false;
+bool g_original_fn_called = false;
+void set_arg_once_fn(grpc_channel_stack *channel_stack,
+                     grpc_channel_element *elem, void *arg) {
+  bool *called = arg;
+  // Make sure this function is only called once per arg.
+  GPR_ASSERT(*called == false);
+  *called = true;
+}
+
+static void test_channel_stack_builder_filter_replace(void) {
+  grpc_channel *channel =
+      grpc_insecure_channel_create("target name isn't used", NULL, NULL);
+  GPR_ASSERT(channel != NULL);
+  // Make sure the high priority filter has been created.
+  GPR_ASSERT(g_replacement_fn_called);
+  // ... and that the low priority one hasn't.
+  GPR_ASSERT(!g_original_fn_called);
+  grpc_channel_destroy(channel);
+}
+
+const grpc_channel_filter replacement_filter = {
+    call_func,
+    channel_func,
+    0,
+    call_init_func,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    call_destroy_func,
+    0,
+    channel_init_func,
+    channel_destroy_func,
+    grpc_channel_next_get_info,
+    "filter_name"};
+
+const grpc_channel_filter original_filter = {
+    call_func,
+    channel_func,
+    0,
+    call_init_func,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    call_destroy_func,
+    0,
+    channel_init_func,
+    channel_destroy_func,
+    grpc_channel_next_get_info,
+    "filter_name"};
+
+static bool add_replacement_filter(grpc_exec_ctx *exec_ctx,
+                                   grpc_channel_stack_builder *builder,
+                                   void *arg) {
+  const grpc_channel_filter *filter = arg;
+  // Get rid of any other version of the filter, as determined by having the
+  // same name.
+  GPR_ASSERT(grpc_channel_stack_builder_remove_filter(builder, filter->name));
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, filter, set_arg_once_fn, &g_replacement_fn_called);
+}
+
+static bool add_original_filter(grpc_exec_ctx *exec_ctx,
+                                grpc_channel_stack_builder *builder,
+                                void *arg) {
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, (const grpc_channel_filter *)arg, set_arg_once_fn,
+      &g_original_fn_called);
+}
+
+static void init_plugin(void) {
+  grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
+                                   add_original_filter,
+                                   (void *)&original_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
+                                   add_replacement_filter,
+                                   (void *)&replacement_filter);
+}
+
+static void destroy_plugin(void) {}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_register_plugin(init_plugin, destroy_plugin);
+  grpc_init();
+  test_channel_stack_builder_filter_replace();
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 0c4bae6ded..7c3614b4a2 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -67,10 +67,6 @@ static void channel_func(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
   ++*(int *)(elem->channel_data);
 }
 
-static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return gpr_strdup("peer");
-}
-
 static void free_channel(grpc_exec_ctx *exec_ctx, void *arg,
                          grpc_error *error) {
   grpc_channel_stack_destroy(exec_ctx, arg);
@@ -93,7 +89,6 @@ static void test_create_channel_stack(void) {
       sizeof(int),
       channel_init_func,
       channel_destroy_func,
-      get_peer,
       grpc_channel_next_get_info,
       "some_test_filter"};
   const grpc_channel_filter *filters = &filter;
diff --git a/test/core/channel/minimal_stack_is_minimal_test.c b/test/core/channel/minimal_stack_is_minimal_test.c
index c99b54c6ac..b4528346f7 100644
--- a/test/core/channel/minimal_stack_is_minimal_test.c
+++ b/test/core/channel/minimal_stack_is_minimal_test.c
@@ -89,14 +89,14 @@ int main(int argc, char **argv) {
                         "connected", NULL);
   errors += CHECK_STACK("unknown", NULL, GRPC_SERVER_CHANNEL, "server",
                         "message_size", "deadline", "connected", NULL);
-  errors +=
-      CHECK_STACK("chttp2", NULL, GRPC_CLIENT_DIRECT_CHANNEL, "message_size",
-                  "deadline", "http-client", "compress", "connected", NULL);
+  errors += CHECK_STACK("chttp2", NULL, GRPC_CLIENT_DIRECT_CHANNEL,
+                        "message_size", "deadline", "http-client",
+                        "message_compress", "connected", NULL);
   errors += CHECK_STACK("chttp2", NULL, GRPC_CLIENT_SUBCHANNEL, "message_size",
-                        "http-client", "compress", "connected", NULL);
-  errors +=
-      CHECK_STACK("chttp2", NULL, GRPC_SERVER_CHANNEL, "server", "message_size",
-                  "deadline", "http-server", "compress", "connected", NULL);
+                        "http-client", "message_compress", "connected", NULL);
+  errors += CHECK_STACK("chttp2", NULL, GRPC_SERVER_CHANNEL, "server",
+                        "message_size", "deadline", "http-server",
+                        "message_compress", "connected", NULL);
   errors +=
       CHECK_STACK(NULL, NULL, GRPC_CLIENT_CHANNEL, "client-channel", NULL);
 
diff --git a/test/core/client_channel/BUILD b/test/core/client_channel/BUILD
index 7fc5b977a9..c4a93238f2 100644
--- a/test/core/client_channel/BUILD
+++ b/test/core/client_channel/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/client_channel")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index f70a9fc880..ba37cd673f 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -519,7 +519,7 @@ static grpc_channel *create_client(const servers_fixture *f) {
   arg_array[1].key = GRPC_ARG_LB_POLICY_NAME;
   arg_array[1].value.string = "ROUND_ROBIN";
   arg_array[2].type = GRPC_ARG_INTEGER;
-  arg_array[2].key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS;
+  arg_array[2].key = GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS;
   arg_array[2].value.integer = 0;
   args.num_args = GPR_ARRAY_SIZE(arg_array);
   args.args = arg_array;
diff --git a/test/core/client_channel/resolvers/BUILD b/test/core/client_channel/resolvers/BUILD
index 8af4a2d5f0..0907e06623 100644
--- a/test/core/client_channel/resolvers/BUILD
+++ b/test/core/client_channel/resolvers/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/client_channel_resolvers")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 grpc_cc_test(
     name = "dns_resolver_connectivity_test",
diff --git a/test/core/compression/BUILD b/test/core/compression/BUILD
index e4432b3b9d..1ab6e35f0d 100644
--- a/test/core/compression/BUILD
+++ b/test/core/compression/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/compression")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 grpc_cc_test(
     name = "algorithm_test",
diff --git a/test/core/compression/algorithm_test.c b/test/core/compression/algorithm_test.c
index e37c8c3010..a11e6e90ac 100644
--- a/test/core/compression/algorithm_test.c
+++ b/test/core/compression/algorithm_test.c
@@ -35,7 +35,7 @@ static void test_algorithm_mesh(void) {
   gpr_log(GPR_DEBUG, "test_algorithm_mesh");
 
   for (i = 0; i < GRPC_COMPRESS_ALGORITHMS_COUNT; i++) {
-    char *name;
+    const char *name;
     grpc_compression_algorithm parsed;
     grpc_slice mdstr;
     grpc_mdelem mdelem;
diff --git a/test/core/compression/compression_test.c b/test/core/compression/compression_test.c
index 4b6026ec77..326a800300 100644
--- a/test/core/compression/compression_test.c
+++ b/test/core/compression/compression_test.c
@@ -57,7 +57,7 @@ static void test_compression_algorithm_parse(void) {
 
 static void test_compression_algorithm_name(void) {
   int success;
-  char *name;
+  const char *name;
   size_t i;
   const char *valid_names[] = {"identity", "gzip", "deflate"};
   const grpc_compression_algorithm valid_algorithms[] = {
diff --git a/test/core/compression/message_compress_test.c b/test/core/compression/message_compress_test.c
index fd692fe5a5..f7f4893dee 100644
--- a/test/core/compression/message_compress_test.c
+++ b/test/core/compression/message_compress_test.c
@@ -49,7 +49,7 @@ static void assert_passthrough(grpc_slice value,
   grpc_slice_buffer output;
   grpc_slice final;
   int was_compressed;
-  char *algorithm_name;
+  const char *algorithm_name;
 
   GPR_ASSERT(grpc_compression_algorithm_name(algorithm, &algorithm_name) != 0);
   gpr_log(
diff --git a/test/core/compression/stream_compression_test.c b/test/core/compression/stream_compression_test.c
index e576507aaf..afed6cd6b5 100644
--- a/test/core/compression/stream_compression_test.c
+++ b/test/core/compression/stream_compression_test.c
@@ -59,10 +59,11 @@ static void test_stream_compression_simple_compress_decompress() {
   grpc_slice_buffer_init(&relay);
   grpc_slice_buffer_init(&sink);
   grpc_stream_compression_context *compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+      grpc_stream_compression_context_create(
+          GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   grpc_stream_compression_context *decompress_ctx =
       grpc_stream_compression_context_create(
-          GRPC_STREAM_COMPRESSION_DECOMPRESS);
+          GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   grpc_slice slice = grpc_slice_from_static_string(test_str);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -91,10 +92,11 @@ test_stream_compression_simple_compress_decompress_with_output_size_constraint()
   grpc_slice_buffer_init(&relay);
   grpc_slice_buffer_init(&sink);
   grpc_stream_compression_context *compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+      grpc_stream_compression_context_create(
+          GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   grpc_stream_compression_context *decompress_ctx =
       grpc_stream_compression_context_create(
-          GRPC_STREAM_COMPRESSION_DECOMPRESS);
+          GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   grpc_slice slice = grpc_slice_from_static_string(test_str);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -139,10 +141,11 @@ test_stream_compression_simple_compress_decompress_with_large_data() {
   grpc_slice_buffer_init(&relay);
   grpc_slice_buffer_init(&sink);
   grpc_stream_compression_context *compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+      grpc_stream_compression_context_create(
+          GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   grpc_stream_compression_context *decompress_ctx =
       grpc_stream_compression_context_create(
-          GRPC_STREAM_COMPRESSION_DECOMPRESS);
+          GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   grpc_slice slice = grpc_slice_from_static_string(test_str);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -172,7 +175,8 @@ static void test_stream_compression_drop_context() {
   grpc_slice_buffer_init(&relay);
   grpc_slice_buffer_init(&sink);
   grpc_stream_compression_context *compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+      grpc_stream_compression_context_create(
+          GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   grpc_slice slice = grpc_slice_from_static_string(test_str);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -180,8 +184,8 @@ static void test_stream_compression_drop_context() {
                                   GRPC_STREAM_COMPRESSION_FLUSH_FINISH));
   grpc_stream_compression_context_destroy(compress_ctx);
 
-  compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+  compress_ctx = grpc_stream_compression_context_create(
+      GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   slice = grpc_slice_from_static_string(test_str2);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -205,7 +209,7 @@ static void test_stream_compression_drop_context() {
 
   grpc_stream_compression_context *decompress_ctx =
       grpc_stream_compression_context_create(
-          GRPC_STREAM_COMPRESSION_DECOMPRESS);
+          GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   bool end_of_context;
   size_t output_size;
   GPR_ASSERT(grpc_stream_decompress(decompress_ctx, &relay, &sink, &output_size,
@@ -219,7 +223,7 @@ static void test_stream_compression_drop_context() {
 
   grpc_slice_buffer_init(&sink);
   decompress_ctx = grpc_stream_compression_context_create(
-      GRPC_STREAM_COMPRESSION_DECOMPRESS);
+      GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   GPR_ASSERT(grpc_stream_decompress(decompress_ctx, &relay, &sink, &output_size,
                                     ~(size_t)0, &end_of_context));
   GPR_ASSERT(end_of_context == true);
@@ -240,7 +244,8 @@ static void test_stream_compression_sync_flush() {
   grpc_slice_buffer_init(&relay);
   grpc_slice_buffer_init(&sink);
   grpc_stream_compression_context *compress_ctx =
-      grpc_stream_compression_context_create(GRPC_STREAM_COMPRESSION_COMPRESS);
+      grpc_stream_compression_context_create(
+          GRPC_STREAM_COMPRESSION_GZIP_COMPRESS);
   grpc_slice slice = grpc_slice_from_static_string(test_str);
   grpc_slice_buffer_add(&source, slice);
   GPR_ASSERT(grpc_stream_compress(compress_ctx, &source, &relay, NULL,
@@ -249,7 +254,7 @@ static void test_stream_compression_sync_flush() {
 
   grpc_stream_compression_context *decompress_ctx =
       grpc_stream_compression_context_create(
-          GRPC_STREAM_COMPRESSION_DECOMPRESS);
+          GRPC_STREAM_COMPRESSION_GZIP_DECOMPRESS);
   bool end_of_context;
   size_t output_size;
   GPR_ASSERT(grpc_stream_decompress(decompress_ctx, &relay, &sink, &output_size,
diff --git a/test/core/debug/stats_test.cc b/test/core/debug/stats_test.cc
new file mode 100644
index 0000000000..c85ab3598a
--- /dev/null
+++ b/test/core/debug/stats_test.cc
@@ -0,0 +1,123 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+extern "C" {
+#include "src/core/lib/debug/stats.h"
+}
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <gtest/gtest.h>
+
+namespace grpc {
+namespace testing {
+
+class Snapshot {
+ public:
+  Snapshot() { grpc_stats_collect(&begin_); }
+
+  grpc_stats_data delta() {
+    grpc_stats_data now;
+    grpc_stats_collect(&now);
+    grpc_stats_data delta;
+    grpc_stats_diff(&now, &begin_, &delta);
+    return delta;
+  }
+
+ private:
+  grpc_stats_data begin_;
+};
+
+TEST(StatsTest, IncCounters) {
+  for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    Snapshot snapshot;
+
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    GRPC_STATS_INC_COUNTER(&exec_ctx, (grpc_stats_counters)i);
+    grpc_exec_ctx_finish(&exec_ctx);
+
+    EXPECT_EQ(snapshot.delta().counters[i], 1);
+  }
+}
+
+TEST(StatsTest, IncSpecificCounter) {
+  Snapshot snapshot;
+
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GRPC_STATS_INC_SYSCALL_POLL(&exec_ctx);
+  grpc_exec_ctx_finish(&exec_ctx);
+
+  EXPECT_EQ(snapshot.delta().counters[GRPC_STATS_COUNTER_SYSCALL_POLL], 1);
+}
+
+static int FindExpectedBucket(int i, int j) {
+  if (j < 0) {
+    return 0;
+  }
+  if (j >= grpc_stats_histo_bucket_boundaries[i][grpc_stats_histo_buckets[i]]) {
+    return grpc_stats_histo_buckets[i] - 1;
+  }
+  return std::upper_bound(grpc_stats_histo_bucket_boundaries[i],
+                          grpc_stats_histo_bucket_boundaries[i] +
+                              grpc_stats_histo_buckets[i],
+                          j) -
+         grpc_stats_histo_bucket_boundaries[i] - 1;
+}
+
+TEST(StatsTest, IncHistogram) {
+  for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    std::vector<int> test_values;
+    for (int j = -1000;
+         j <
+         grpc_stats_histo_bucket_boundaries[i]
+                                           [grpc_stats_histo_buckets[i] - 1] +
+             1000;
+         j++) {
+      test_values.push_back(j);
+    }
+    std::random_shuffle(test_values.begin(), test_values.end());
+    if (test_values.size() > 10000) {
+      test_values.resize(10000);
+    }
+    for (auto j : test_values) {
+      Snapshot snapshot;
+
+      int expected_bucket = FindExpectedBucket(i, j);
+
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_stats_inc_histogram[i](&exec_ctx, j);
+      grpc_exec_ctx_finish(&exec_ctx);
+
+      auto delta = snapshot.delta();
+
+      EXPECT_EQ(delta.histograms[grpc_stats_histo_start[i] + expected_bucket],
+                1);
+    }
+  }
+}
+
+}  // namespace testing
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  grpc_init();
+  int ret = RUN_ALL_TESTS();
+  grpc_shutdown();
+  return ret;
+}
diff --git a/test/core/end2end/BUILD b/test/core/end2end/BUILD
index 9e788bf7e5..49bfc43646 100644
--- a/test/core/end2end/BUILD
+++ b/test/core/end2end/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/end2end")
 
 load(":generate_tests.bzl", "grpc_end2end_tests")
 
diff --git a/test/core/end2end/bad_server_response_test.c b/test/core/end2end/bad_server_response_test.c
index 5f89058c45..eeabc769d3 100644
--- a/test/core/end2end/bad_server_response_test.c
+++ b/test/core/end2end/bad_server_response_test.c
@@ -136,7 +136,7 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
                        grpc_pollset *accepting_pollset,
                        grpc_tcp_server_acceptor *acceptor) {
   gpr_free(acceptor);
-  test_tcp_server *server = arg;
+  test_tcp_server *server = (test_tcp_server *)arg;
   GRPC_CLOSURE_INIT(&on_read, handle_read, NULL, grpc_schedule_on_exec_ctx);
   GRPC_CLOSURE_INIT(&on_write, done_write, NULL, grpc_schedule_on_exec_ctx);
   grpc_slice_buffer_init(&state.temp_incoming_buffer);
@@ -237,7 +237,7 @@ typedef struct {
 } poll_args;
 
 static void actually_poll_server(void *arg) {
-  poll_args *pa = arg;
+  poll_args *pa = (poll_args *)arg;
   gpr_timespec deadline = n_sec_deadline(10);
   while (true) {
     bool done = gpr_atm_acq_load(&state.done_atm) != 0;
@@ -259,7 +259,7 @@ static void poll_server_until_read_done(test_tcp_server *server,
   gpr_atm_rel_store(&state.done_atm, 0);
   state.write_done = 0;
   gpr_thd_id id;
-  poll_args *pa = gpr_malloc(sizeof(*pa));
+  poll_args *pa = (poll_args *)gpr_malloc(sizeof(*pa));
   pa->server = server;
   pa->signal_when_done = signal_when_done;
   gpr_thd_new(&id, actually_poll_server, pa, NULL);
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 6a061a4e2d..3236feea56 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -130,6 +130,12 @@ extern void simple_metadata(grpc_end2end_test_config config);
 extern void simple_metadata_pre_init(void);
 extern void simple_request(grpc_end2end_test_config config);
 extern void simple_request_pre_init(void);
+extern void stream_compression_compressed_payload(grpc_end2end_test_config config);
+extern void stream_compression_compressed_payload_pre_init(void);
+extern void stream_compression_payload(grpc_end2end_test_config config);
+extern void stream_compression_payload_pre_init(void);
+extern void stream_compression_ping_pong_streaming(grpc_end2end_test_config config);
+extern void stream_compression_ping_pong_streaming_pre_init(void);
 extern void streaming_error_response(grpc_end2end_test_config config);
 extern void streaming_error_response_pre_init(void);
 extern void trailing_metadata(grpc_end2end_test_config config);
@@ -195,6 +201,9 @@ void grpc_end2end_tests_pre_init(void) {
   simple_delayed_request_pre_init();
   simple_metadata_pre_init();
   simple_request_pre_init();
+  stream_compression_compressed_payload_pre_init();
+  stream_compression_payload_pre_init();
+  stream_compression_ping_pong_streaming_pre_init();
   streaming_error_response_pre_init();
   trailing_metadata_pre_init();
   workaround_cronet_compression_pre_init();
@@ -259,6 +268,9 @@ void grpc_end2end_tests(int argc, char **argv,
     simple_delayed_request(config);
     simple_metadata(config);
     simple_request(config);
+    stream_compression_compressed_payload(config);
+    stream_compression_payload(config);
+    stream_compression_ping_pong_streaming(config);
     streaming_error_response(config);
     trailing_metadata(config);
     workaround_cronet_compression(config);
@@ -468,6 +480,18 @@ void grpc_end2end_tests(int argc, char **argv,
       simple_request(config);
       continue;
     }
+    if (0 == strcmp("stream_compression_compressed_payload", argv[i])) {
+      stream_compression_compressed_payload(config);
+      continue;
+    }
+    if (0 == strcmp("stream_compression_payload", argv[i])) {
+      stream_compression_payload(config);
+      continue;
+    }
+    if (0 == strcmp("stream_compression_ping_pong_streaming", argv[i])) {
+      stream_compression_ping_pong_streaming(config);
+      continue;
+    }
     if (0 == strcmp("streaming_error_response", argv[i])) {
       streaming_error_response(config);
       continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index 3fc7c3fb6c..ca9443b642 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -132,6 +132,12 @@ extern void simple_metadata(grpc_end2end_test_config config);
 extern void simple_metadata_pre_init(void);
 extern void simple_request(grpc_end2end_test_config config);
 extern void simple_request_pre_init(void);
+extern void stream_compression_compressed_payload(grpc_end2end_test_config config);
+extern void stream_compression_compressed_payload_pre_init(void);
+extern void stream_compression_payload(grpc_end2end_test_config config);
+extern void stream_compression_payload_pre_init(void);
+extern void stream_compression_ping_pong_streaming(grpc_end2end_test_config config);
+extern void stream_compression_ping_pong_streaming_pre_init(void);
 extern void streaming_error_response(grpc_end2end_test_config config);
 extern void streaming_error_response_pre_init(void);
 extern void trailing_metadata(grpc_end2end_test_config config);
@@ -198,6 +204,9 @@ void grpc_end2end_tests_pre_init(void) {
   simple_delayed_request_pre_init();
   simple_metadata_pre_init();
   simple_request_pre_init();
+  stream_compression_compressed_payload_pre_init();
+  stream_compression_payload_pre_init();
+  stream_compression_ping_pong_streaming_pre_init();
   streaming_error_response_pre_init();
   trailing_metadata_pre_init();
   workaround_cronet_compression_pre_init();
@@ -263,6 +272,9 @@ void grpc_end2end_tests(int argc, char **argv,
     simple_delayed_request(config);
     simple_metadata(config);
     simple_request(config);
+    stream_compression_compressed_payload(config);
+    stream_compression_payload(config);
+    stream_compression_ping_pong_streaming(config);
     streaming_error_response(config);
     trailing_metadata(config);
     workaround_cronet_compression(config);
@@ -476,6 +488,18 @@ void grpc_end2end_tests(int argc, char **argv,
       simple_request(config);
       continue;
     }
+    if (0 == strcmp("stream_compression_compressed_payload", argv[i])) {
+      stream_compression_compressed_payload(config);
+      continue;
+    }
+    if (0 == strcmp("stream_compression_payload", argv[i])) {
+      stream_compression_payload(config);
+      continue;
+    }
+    if (0 == strcmp("stream_compression_ping_pong_streaming", argv[i])) {
+      stream_compression_ping_pong_streaming(config);
+      continue;
+    }
     if (0 == strcmp("streaming_error_response", argv[i])) {
       streaming_error_response(config);
       continue;
diff --git a/test/core/end2end/fixtures/h2_load_reporting.c b/test/core/end2end/fixtures/h2_load_reporting.c
index 385e2cbf70..8a05bb722a 100644
--- a/test/core/end2end/fixtures/h2_load_reporting.c
+++ b/test/core/end2end/fixtures/h2_load_reporting.c
@@ -28,7 +28,7 @@
 #include <grpc/support/useful.h>
 #include "src/core/ext/filters/client_channel/client_channel.h"
 #include "src/core/ext/filters/http/server/http_server_filter.h"
-#include "src/core/ext/filters/load_reporting/load_reporting.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
diff --git a/test/core/end2end/fixtures/proxy.c b/test/core/end2end/fixtures/proxy.c
index d457aeefe8..9ad862728f 100644
--- a/test/core/end2end/fixtures/proxy.c
+++ b/test/core/end2end/fixtures/proxy.c
@@ -80,7 +80,7 @@ grpc_end2end_proxy *grpc_end2end_proxy_create(const grpc_end2end_proxy_def *def,
   int proxy_port = grpc_pick_unused_port_or_die();
   int server_port = grpc_pick_unused_port_or_die();
 
-  grpc_end2end_proxy *proxy = gpr_malloc(sizeof(*proxy));
+  grpc_end2end_proxy *proxy = (grpc_end2end_proxy *)gpr_malloc(sizeof(*proxy));
   memset(proxy, 0, sizeof(*proxy));
 
   gpr_join_host_port(&proxy->proxy_port, "localhost", proxy_port);
@@ -106,14 +106,14 @@ grpc_end2end_proxy *grpc_end2end_proxy_create(const grpc_end2end_proxy_def *def,
 }
 
 static closure *new_closure(void (*func)(void *arg, int success), void *arg) {
-  closure *cl = gpr_malloc(sizeof(*cl));
+  closure *cl = (closure *)gpr_malloc(sizeof(*cl));
   cl->func = func;
   cl->arg = arg;
   return cl;
 }
 
 static void shutdown_complete(void *arg, int success) {
-  grpc_end2end_proxy *proxy = arg;
+  grpc_end2end_proxy *proxy = (grpc_end2end_proxy *)arg;
   proxy->shutdown = 1;
   grpc_completion_queue_shutdown(proxy->cq);
 }
@@ -146,12 +146,12 @@ static void unrefpc(proxy_call *pc, const char *reason) {
 static void refpc(proxy_call *pc, const char *reason) { gpr_ref(&pc->refs); }
 
 static void on_c2p_sent_initial_metadata(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   unrefpc(pc, "on_c2p_sent_initial_metadata");
 }
 
 static void on_p2s_recv_initial_metadata(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -172,14 +172,14 @@ static void on_p2s_recv_initial_metadata(void *arg, int success) {
 }
 
 static void on_p2s_sent_initial_metadata(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   unrefpc(pc, "on_p2s_sent_initial_metadata");
 }
 
 static void on_c2p_recv_msg(void *arg, int success);
 
 static void on_p2s_sent_message(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -199,12 +199,12 @@ static void on_p2s_sent_message(void *arg, int success) {
 }
 
 static void on_p2s_sent_close(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   unrefpc(pc, "on_p2s_sent_close");
 }
 
 static void on_c2p_recv_msg(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -235,7 +235,7 @@ static void on_c2p_recv_msg(void *arg, int success) {
 static void on_p2s_recv_msg(void *arg, int success);
 
 static void on_c2p_sent_message(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -255,7 +255,7 @@ static void on_c2p_sent_message(void *arg, int success) {
 }
 
 static void on_p2s_recv_msg(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -275,12 +275,12 @@ static void on_p2s_recv_msg(void *arg, int success) {
 }
 
 static void on_c2p_sent_status(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   unrefpc(pc, "on_c2p_sent_status");
 }
 
 static void on_p2s_status(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   grpc_op op;
   grpc_call_error err;
 
@@ -305,18 +305,18 @@ static void on_p2s_status(void *arg, int success) {
 }
 
 static void on_c2p_closed(void *arg, int success) {
-  proxy_call *pc = arg;
+  proxy_call *pc = (proxy_call *)arg;
   unrefpc(pc, "on_c2p_closed");
 }
 
 static void on_new_call(void *arg, int success) {
-  grpc_end2end_proxy *proxy = arg;
+  grpc_end2end_proxy *proxy = (grpc_end2end_proxy *)arg;
   grpc_call_error err;
 
   if (success) {
     grpc_op op;
     memset(&op, 0, sizeof(op));
-    proxy_call *pc = gpr_malloc(sizeof(*pc));
+    proxy_call *pc = (proxy_call *)gpr_malloc(sizeof(*pc));
     memset(pc, 0, sizeof(*pc));
     pc->proxy = proxy;
     GPR_SWAP(grpc_metadata_array, pc->c2p_initial_metadata,
@@ -404,7 +404,7 @@ static void request_call(grpc_end2end_proxy *proxy) {
 }
 
 static void thread_main(void *arg) {
-  grpc_end2end_proxy *proxy = arg;
+  grpc_end2end_proxy *proxy = (grpc_end2end_proxy *)arg;
   closure *cl;
   for (;;) {
     grpc_event ev = grpc_completion_queue_next(
@@ -416,7 +416,7 @@ static void thread_main(void *arg) {
       case GRPC_QUEUE_SHUTDOWN:
         return;
       case GRPC_OP_COMPLETE:
-        cl = ev.tag;
+        cl = (closure *)ev.tag;
         cl->func(cl->arg, ev.success);
         gpr_free(cl);
         break;
diff --git a/test/core/end2end/fuzzers/BUILD b/test/core/end2end/fuzzers/BUILD
index bf3a62ad37..4ed9a70578 100644
--- a/test/core/end2end/fuzzers/BUILD
+++ b/test/core/end2end/fuzzers/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/end2end/fuzzers")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/end2end/fuzzers/hpack.dictionary b/test/core/end2end/fuzzers/hpack.dictionary
index 2bb9de34c5..7c77512aa9 100644
--- a/test/core/end2end/fuzzers/hpack.dictionary
+++ b/test/core/end2end/fuzzers/hpack.dictionary
@@ -14,7 +14,10 @@
 "\x0Dgrpc-tags-bin"
 "\x0Egrpc-trace-bin"
 "\x0Ccontent-type"
+"\x10content-encoding"
+"\x0Faccept-encoding"
 "\x1Egrpc-internal-encoding-request"
+"%grpc-internal-stream-encoding-request"
 "\x0Auser-agent"
 "\x04host"
 "\x08lb-token"
@@ -49,7 +52,6 @@
 "\x03400"
 "\x03500"
 "\x0Eaccept-charset"
-"\x0Faccept-encoding"
 "\x0Dgzip, deflate"
 "\x0Faccept-language"
 "\x0Daccept-ranges"
@@ -60,7 +62,6 @@
 "\x0Dauthorization"
 "\x0Dcache-control"
 "\x13content-disposition"
-"\x10content-encoding"
 "\x10content-language"
 "\x0Econtent-length"
 "\x10content-location"
@@ -134,6 +135,8 @@
 "\x00\x0Dauthorization\x00"
 "\x00\x0Dcache-control\x00"
 "\x00\x13content-disposition\x00"
+"\x00\x10content-encoding\x08identity"
+"\x00\x10content-encoding\x04gzip"
 "\x00\x10content-encoding\x00"
 "\x00\x10content-language\x00"
 "\x00\x0Econtent-length\x00"
@@ -179,3 +182,6 @@
 "\x00\x14grpc-accept-encoding\x0Didentity,gzip"
 "\x00\x14grpc-accept-encoding\x0Cdeflate,gzip"
 "\x00\x14grpc-accept-encoding\x15identity,deflate,gzip"
+"\x00\x0Faccept-encoding\x08identity"
+"\x00\x0Faccept-encoding\x04gzip"
+"\x00\x0Faccept-encoding\x0Didentity,gzip"
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 18bae63a8a..33fd97f3bd 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -137,6 +137,10 @@ END2END_TESTS = {
     'shutdown_finishes_calls': default_test_options._replace(cpu_cost=LOWCPU),
     'shutdown_finishes_tags': default_test_options._replace(cpu_cost=LOWCPU),
     'simple_cacheable_request': default_test_options._replace(cpu_cost=LOWCPU),
+    'stream_compression_compressed_payload': default_test_options._replace(proxyable=False,
+                                                               exclude_inproc=True),
+    'stream_compression_payload': default_test_options._replace(exclude_inproc=True),
+    'stream_compression_ping_pong_streaming': default_test_options._replace(exclude_inproc=True),
     'simple_delayed_request': connectivity_test_options,
     'simple_metadata': default_test_options,
     'simple_request': default_test_options,
diff --git a/test/core/end2end/generate_tests.bzl b/test/core/end2end/generate_tests.bzl
index 6d1917c0ff..9bbba26108 100755
--- a/test/core/end2end/generate_tests.bzl
+++ b/test/core/end2end/generate_tests.bzl
@@ -138,6 +138,9 @@ END2END_TESTS = {
     'simple_metadata': test_options(),
     'simple_request': test_options(),
     'streaming_error_response': test_options(),
+    'stream_compression_compressed_payload': test_options(proxyable=False, exclude_inproc=True),
+    'stream_compression_payload': test_options(exclude_inproc=True),
+    'stream_compression_ping_pong_streaming': test_options(exclude_inproc=True),
     'trailing_metadata': test_options(),
     'authority_not_supported': test_options(),
     'filter_latency': test_options(),
diff --git a/test/core/end2end/tests/bad_ping.c b/test/core/end2end/tests/bad_ping.c
index 12aceda688..c97d11b306 100644
--- a/test/core/end2end/tests/bad_ping.c
+++ b/test/core/end2end/tests/bad_ping.c
@@ -66,18 +66,19 @@ static void end_test(grpc_end2end_test_fixture *f) {
 static void test_bad_ping(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
-  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
-                          .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
-                          .value.integer = 0},
-                         {.type = GRPC_ARG_INTEGER,
-                          .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
-                          .value.integer = 20},
-                         {.type = GRPC_ARG_INTEGER,
-                          .key = GRPC_ARG_HTTP2_BDP_PROBE,
-                          .value.integer = 0}};
+  grpc_arg client_a[] = {
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS,
+       .value.integer = 10},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
+       .value.integer = 0},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_BDP_PROBE,
+       .value.integer = 0}};
   grpc_arg server_a[] = {
       {.type = GRPC_ARG_INTEGER,
-       .key = GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS,
+       .key = GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS,
        .value.integer = 300000 /* 5 minutes */},
       {.type = GRPC_ARG_INTEGER,
        .key = GRPC_ARG_HTTP2_MAX_PING_STRIKES,
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index a360c6f0d2..c3ac0c3201 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -39,10 +39,13 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            cancellation_mode mode,
+                                            bool use_service_config,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s/%s/%s", test_name, config.name,
+          mode.name, use_service_config ? "service_config" : "client_api");
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -135,8 +138,8 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
     args = grpc_channel_args_copy_and_add(args, &arg, 1);
   }
 
-  grpc_end2end_test_fixture f =
-      begin_test(config, "cancel_after_accept", args, NULL);
+  grpc_end2end_test_fixture f = begin_test(config, "cancel_after_accept", mode,
+                                           use_service_config, args, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
 
   gpr_timespec deadline = use_service_config
diff --git a/test/core/end2end/tests/cancel_after_client_done.c b/test/core/end2end/tests/cancel_after_client_done.c
index 502005b6af..0e2a751d83 100644
--- a/test/core/end2end/tests/cancel_after_client_done.c
+++ b/test/core/end2end/tests/cancel_after_client_done.c
@@ -33,10 +33,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            cancellation_mode mode,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s/%s", test_name, config.name,
+          mode.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -93,7 +95,7 @@ static void test_cancel_after_accept_and_writes_closed(
   grpc_call *c;
   grpc_call *s;
   grpc_end2end_test_fixture f = begin_test(
-      config, "test_cancel_after_accept_and_writes_closed", NULL, NULL);
+      config, "test_cancel_after_accept_and_writes_closed", mode, NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
diff --git a/test/core/end2end/tests/cancel_after_round_trip.c b/test/core/end2end/tests/cancel_after_round_trip.c
index 0fc8b95ef7..bc41bd3a6d 100644
--- a/test/core/end2end/tests/cancel_after_round_trip.c
+++ b/test/core/end2end/tests/cancel_after_round_trip.c
@@ -39,10 +39,13 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            cancellation_mode mode,
+                                            bool use_service_config,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s/%s/%s", test_name, config.name,
+          mode.name, use_service_config ? "service_config" : "client_api");
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -114,7 +117,9 @@ static void test_cancel_after_round_trip(grpc_end2end_test_config config,
       grpc_slice_from_copied_string("hello you");
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  grpc_byte_buffer *response_payload =
+  grpc_byte_buffer *response_payload1 =
+      grpc_raw_byte_buffer_create(&response_payload_slice, 1);
+  grpc_byte_buffer *response_payload2 =
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   int was_cancelled = 2;
 
@@ -135,8 +140,8 @@ static void test_cancel_after_round_trip(grpc_end2end_test_config config,
     args = grpc_channel_args_copy_and_add(args, &arg, 1);
   }
 
-  grpc_end2end_test_fixture f =
-      begin_test(config, "cancel_after_round_trip", args, NULL);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "cancel_after_round_trip", mode, use_service_config, args, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
 
   gpr_timespec deadline = use_service_config
@@ -199,7 +204,7 @@ static void test_cancel_after_round_trip(grpc_end2end_test_config config,
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_MESSAGE;
-  op->data.send_message.send_message = response_payload;
+  op->data.send_message.send_message = response_payload1;
   op->flags = 0;
   op->reserved = NULL;
   op++;
@@ -242,7 +247,7 @@ static void test_cancel_after_round_trip(grpc_end2end_test_config config,
   op->reserved = NULL;
   op++;
   op->op = GRPC_OP_SEND_MESSAGE;
-  op->data.send_message.send_message = response_payload;
+  op->data.send_message.send_message = response_payload2;
   op->flags = 0;
   op->reserved = NULL;
   op++;
@@ -262,7 +267,8 @@ static void test_cancel_after_round_trip(grpc_end2end_test_config config,
   grpc_call_details_destroy(&call_details);
 
   grpc_byte_buffer_destroy(request_payload);
-  grpc_byte_buffer_destroy(response_payload);
+  grpc_byte_buffer_destroy(response_payload1);
+  grpc_byte_buffer_destroy(response_payload2);
   grpc_byte_buffer_destroy(request_payload_recv);
   grpc_byte_buffer_destroy(response_payload_recv);
   grpc_slice_unref(details);
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index 423194b63e..397e8b8ba6 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -32,10 +32,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            size_t num_ops,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s [%" PRIdPTR " ops]", test_name,
+          config.name, num_ops);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -91,7 +93,7 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   grpc_op *op;
   grpc_call *c;
   grpc_end2end_test_fixture f =
-      begin_test(config, "cancel_before_invoke", NULL, NULL);
+      begin_test(config, "cancel_before_invoke", test_ops, NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index f64cbdf929..cd9551bef9 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -33,10 +33,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            cancellation_mode mode,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s/%s", test_name, config.name,
+          mode.name);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -90,7 +92,7 @@ static void test_cancel_in_a_vacuum(grpc_end2end_test_config config,
                                     cancellation_mode mode) {
   grpc_call *c;
   grpc_end2end_test_fixture f =
-      begin_test(config, "test_cancel_in_a_vacuum", NULL, NULL);
+      begin_test(config, "test_cancel_in_a_vacuum", mode, NULL, NULL);
   cq_verifier *v_client = cq_verifier_create(f.cq);
 
   gpr_timespec deadline = five_seconds_from_now();
diff --git a/test/core/end2end/tests/cancel_with_status.c b/test/core/end2end/tests/cancel_with_status.c
index fd26fd122e..ab8c4f4187 100644
--- a/test/core/end2end/tests/cancel_with_status.c
+++ b/test/core/end2end/tests/cancel_with_status.c
@@ -35,10 +35,12 @@ static void *tag(intptr_t t) { return (void *)t; }
 
 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
                                             const char *test_name,
+                                            size_t num_ops,
                                             grpc_channel_args *client_args,
                                             grpc_channel_args *server_args) {
   grpc_end2end_test_fixture f;
-  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  gpr_log(GPR_INFO, "Running test: %s/%s [%" PRIdPTR " ops]", test_name,
+          config.name, num_ops);
   f = config.create_fixture(client_args, server_args);
   config.init_server(&f, server_args);
   config.init_client(&f, client_args);
@@ -165,7 +167,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config,
                                        size_t num_ops) {
   grpc_end2end_test_fixture f;
 
-  f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
+  f = begin_test(config, "test_invoke_simple_request", num_ops, NULL, NULL);
   simple_request_body(config, f, num_ops);
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index 429717a7be..ce86e97b83 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -151,6 +151,11 @@ static void request_for_disabled_algorithm(
   grpc_metadata_array_init(&request_metadata_recv);
   grpc_call_details_init(&call_details);
 
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
   memset(ops, 0, sizeof(ops));
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -187,10 +192,6 @@ static void request_for_disabled_algorithm(
   error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
   GPR_ASSERT(GRPC_CALL_OK == error);
 
-  error =
-      grpc_server_request_call(f.server, &s, &call_details,
-                               &request_metadata_recv, f.cq, f.cq, tag(101));
-  GPR_ASSERT(GRPC_CALL_OK == error);
   CQ_EXPECT_COMPLETION(cqv, tag(101), true);
   cq_verify(cqv);
 
@@ -228,7 +229,7 @@ static void request_for_disabled_algorithm(
   /* with a certain error */
   GPR_ASSERT(status == expected_error);
 
-  char *algo_name = NULL;
+  const char *algo_name = NULL;
   GPR_ASSERT(grpc_compression_algorithm_name(algorithm_to_disable, &algo_name));
   char *expected_details = NULL;
   gpr_asprintf(&expected_details, "Compression algorithm '%s' is disabled.",
diff --git a/test/core/end2end/tests/connectivity.c b/test/core/end2end/tests/connectivity.c
index a5af46e09e..610243ee3a 100644
--- a/test/core/end2end/tests/connectivity.c
+++ b/test/core/end2end/tests/connectivity.c
@@ -34,7 +34,7 @@ typedef struct {
 } child_events;
 
 static void child_thread(void *arg) {
-  child_events *ce = arg;
+  child_events *ce = (child_events *)arg;
   grpc_event ev;
   gpr_event_set(&ce->started, (void *)1);
   gpr_log(GPR_DEBUG, "verifying");
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index b6be375a51..09e9dbcd7b 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -430,7 +430,6 @@ static const grpc_channel_filter test_filter = {
     0,
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "filter_call_init_fails"};
 
diff --git a/test/core/end2end/tests/filter_causes_close.c b/test/core/end2end/tests/filter_causes_close.c
index aff39dd89d..ee7aeb3f33 100644
--- a/test/core/end2end/tests/filter_causes_close.c
+++ b/test/core/end2end/tests/filter_causes_close.c
@@ -195,9 +195,9 @@ typedef struct { uint8_t unused; } channel_data;
 
 static void recv_im_ready(grpc_exec_ctx *exec_ctx, void *arg,
                           grpc_error *error) {
-  grpc_call_element *elem = arg;
-  call_data *calld = elem->call_data;
-  GRPC_CLOSURE_SCHED(
+  grpc_call_element *elem = (grpc_call_element *)arg;
+  call_data *calld = (call_data *)elem->call_data;
+  GRPC_CLOSURE_RUN(
       exec_ctx, calld->recv_im_ready,
       grpc_error_set_int(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
                              "Failure that's not preventable.", &error, 1),
@@ -208,7 +208,7 @@ static void recv_im_ready(grpc_exec_ctx *exec_ctx, void *arg,
 static void start_transport_stream_op_batch(
     grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     grpc_transport_stream_op_batch *op) {
-  call_data *calld = elem->call_data;
+  call_data *calld = (call_data *)elem->call_data;
   if (op->recv_initial_metadata) {
     calld->recv_im_ready =
         op->payload->recv_initial_metadata.recv_initial_metadata_ready;
@@ -247,7 +247,6 @@ static const grpc_channel_filter test_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "filter_causes_close"};
 
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
index 5dbbc4d18d..c24934f05d 100644
--- a/test/core/end2end/tests/filter_latency.c
+++ b/test/core/end2end/tests/filter_latency.c
@@ -290,7 +290,6 @@ static const grpc_channel_filter test_client_filter = {
     0,
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "client_filter_latency"};
 
@@ -304,7 +303,6 @@ static const grpc_channel_filter test_server_filter = {
     0,
     init_channel_elem,
     destroy_channel_elem,
-    grpc_call_next_get_peer,
     grpc_channel_next_get_info,
     "server_filter_latency"};
 
@@ -314,7 +312,7 @@ static const grpc_channel_filter test_server_filter = {
 
 static bool maybe_add_filter(grpc_exec_ctx *exec_ctx,
                              grpc_channel_stack_builder *builder, void *arg) {
-  grpc_channel_filter *filter = arg;
+  grpc_channel_filter *filter = (grpc_channel_filter *)arg;
   if (g_enable_filter) {
     // Want to add the filter as close to the end as possible, to make
     // sure that all of the filters work well together.  However, we
diff --git a/test/core/end2end/tests/keepalive_timeout.c b/test/core/end2end/tests/keepalive_timeout.c
index e0ead4ab62..8d01f23c00 100644
--- a/test/core/end2end/tests/keepalive_timeout.c
+++ b/test/core/end2end/tests/keepalive_timeout.c
@@ -106,13 +106,13 @@ static void test_keepalive_timeout(grpc_end2end_test_config config) {
                                 .value.integer = 0},
                                {.type = GRPC_ARG_INTEGER,
                                 .key = GRPC_ARG_HTTP2_BDP_PROBE,
-                                .value.integer = 1}};
+                                .value.integer = 0}};
 
-  grpc_channel_args *client_args = NULL;
-  client_args = grpc_channel_args_copy_and_add(client_args, keepalive_args, 2);
+  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(keepalive_args),
+                                   .args = keepalive_args};
 
   grpc_end2end_test_fixture f =
-      begin_test(config, "keepalive_timeout", client_args, NULL);
+      begin_test(config, "keepalive_timeout", &client_args, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
@@ -216,12 +216,6 @@ static void test_keepalive_timeout(grpc_end2end_test_config config) {
   grpc_byte_buffer_destroy(response_payload);
   grpc_byte_buffer_destroy(response_payload_recv);
 
-  if (client_args != NULL) {
-    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-    grpc_channel_args_destroy(&exec_ctx, client_args);
-    grpc_exec_ctx_finish(&exec_ctx);
-  }
-
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/load_reporting_hook.c b/test/core/end2end/tests/load_reporting_hook.c
index 3584d47887..7b503790db 100644
--- a/test/core/end2end/tests/load_reporting_hook.c
+++ b/test/core/end2end/tests/load_reporting_hook.c
@@ -26,8 +26,8 @@
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/ext/filters/load_reporting/load_reporting.h"
-#include "src/core/ext/filters/load_reporting/load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/transport/static_metadata.h"
 
diff --git a/test/core/end2end/tests/payload.c b/test/core/end2end/tests/payload.c
index 19fb4d9769..d98eed68e0 100644
--- a/test/core/end2end/tests/payload.c
+++ b/test/core/end2end/tests/payload.c
@@ -91,7 +91,7 @@ static grpc_slice generate_random_slice() {
   static const char chars[] = "abcdefghijklmnopqrstuvwxyz1234567890";
   char *output;
   const size_t output_size = 1024 * 1024;
-  output = gpr_malloc(output_size);
+  output = (char *)gpr_malloc(output_size);
   for (i = 0; i < output_size - 1; ++i) {
     output[i] = chars[rand() % (int)(sizeof(chars) - 1)];
   }
diff --git a/test/core/end2end/tests/ping.c b/test/core/end2end/tests/ping.c
index 112ad9d7d2..23c82569ba 100644
--- a/test/core/end2end/tests/ping.c
+++ b/test/core/end2end/tests/ping.c
@@ -37,15 +37,19 @@ static void test_ping(grpc_end2end_test_config config,
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
   int i;
 
-  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
-                          .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
-                          .value.integer = 0},
-                         {.type = GRPC_ARG_INTEGER,
-                          .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
-                          .value.integer = 20}};
+  grpc_arg client_a[] = {
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS,
+       .value.integer = 10},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
+       .value.integer = 0},
+      {.type = GRPC_ARG_INTEGER,
+       .key = GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS,
+       .value.integer = 1}};
   grpc_arg server_a[] = {
       {.type = GRPC_ARG_INTEGER,
-       .key = GRPC_ARG_HTTP2_MIN_PING_INTERVAL_WITHOUT_DATA_MS,
+       .key = GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS,
        .value.integer = 0},
       {.type = GRPC_ARG_INTEGER,
        .key = GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS,
diff --git a/test/core/end2end/tests/resource_quota_server.c b/test/core/end2end/tests/resource_quota_server.c
index 010e20c4c2..93befeee0c 100644
--- a/test/core/end2end/tests/resource_quota_server.c
+++ b/test/core/end2end/tests/resource_quota_server.c
@@ -91,7 +91,7 @@ static grpc_slice generate_random_slice() {
   static const char chars[] = "abcdefghijklmnopqrstuvwxyz1234567890";
   char *output;
   const size_t output_size = 1024 * 1024;
-  output = gpr_malloc(output_size);
+  output = (char *)gpr_malloc(output_size);
   for (i = 0; i < output_size - 1; ++i) {
     output[i] = chars[rand() % (int)(sizeof(chars) - 1)];
   }
@@ -111,10 +111,10 @@ void resource_quota_server(grpc_end2end_test_config config) {
   grpc_resource_quota_resize(resource_quota, 5 * 1024 * 1024);
 
 #define NUM_CALLS 100
-#define CLIENT_BASE_TAG 1000
-#define SERVER_START_BASE_TAG 2000
-#define SERVER_RECV_BASE_TAG 3000
-#define SERVER_END_BASE_TAG 4000
+#define CLIENT_BASE_TAG 0x1000
+#define SERVER_START_BASE_TAG 0x2000
+#define SERVER_RECV_BASE_TAG 0x3000
+#define SERVER_END_BASE_TAG 0x4000
 
   grpc_arg arg;
   arg.key = GRPC_ARG_RESOURCE_QUOTA;
@@ -131,21 +131,26 @@ void resource_quota_server(grpc_end2end_test_config config) {
    * will be verified on completion. */
   grpc_slice request_payload_slice = generate_random_slice();
 
-  grpc_call **client_calls = malloc(sizeof(grpc_call *) * NUM_CALLS);
-  grpc_call **server_calls = malloc(sizeof(grpc_call *) * NUM_CALLS);
+  grpc_call **client_calls =
+      (grpc_call **)malloc(sizeof(grpc_call *) * NUM_CALLS);
+  grpc_call **server_calls =
+      (grpc_call **)malloc(sizeof(grpc_call *) * NUM_CALLS);
   grpc_metadata_array *initial_metadata_recv =
-      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+      (grpc_metadata_array *)malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
   grpc_metadata_array *trailing_metadata_recv =
-      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+      (grpc_metadata_array *)malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
   grpc_metadata_array *request_metadata_recv =
-      malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
+      (grpc_metadata_array *)malloc(sizeof(grpc_metadata_array) * NUM_CALLS);
   grpc_call_details *call_details =
-      malloc(sizeof(grpc_call_details) * NUM_CALLS);
-  grpc_status_code *status = malloc(sizeof(grpc_status_code) * NUM_CALLS);
-  grpc_slice *details = malloc(sizeof(grpc_slice) * NUM_CALLS);
+      (grpc_call_details *)malloc(sizeof(grpc_call_details) * NUM_CALLS);
+  grpc_status_code *status =
+      (grpc_status_code *)malloc(sizeof(grpc_status_code) * NUM_CALLS);
+  grpc_slice *details = (grpc_slice *)malloc(sizeof(grpc_slice) * NUM_CALLS);
+  grpc_byte_buffer **request_payload =
+      (grpc_byte_buffer **)malloc(sizeof(grpc_byte_buffer *) * NUM_CALLS);
   grpc_byte_buffer **request_payload_recv =
-      malloc(sizeof(grpc_byte_buffer *) * NUM_CALLS);
-  int *was_cancelled = malloc(sizeof(int) * NUM_CALLS);
+      (grpc_byte_buffer **)malloc(sizeof(grpc_byte_buffer *) * NUM_CALLS);
+  int *was_cancelled = (int *)malloc(sizeof(int) * NUM_CALLS);
   grpc_call_error error;
   int pending_client_calls = 0;
   int pending_server_start_calls = 0;
@@ -156,9 +161,6 @@ void resource_quota_server(grpc_end2end_test_config config) {
   int deadline_exceeded = 0;
   int unavailable = 0;
 
-  grpc_byte_buffer *request_payload =
-      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-
   grpc_op ops[6];
   grpc_op *op;
 
@@ -167,6 +169,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
     grpc_metadata_array_init(&trailing_metadata_recv[i]);
     grpc_metadata_array_init(&request_metadata_recv[i]);
     grpc_call_details_init(&call_details[i]);
+    request_payload[i] = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
     request_payload_recv[i] = NULL;
     was_cancelled[i] = 0;
   }
@@ -195,7 +198,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
     op->reserved = NULL;
     op++;
     op->op = GRPC_OP_SEND_MESSAGE;
-    op->data.send_message.send_message = request_payload;
+    op->data.send_message.send_message = request_payload[i];
     op->flags = 0;
     op->reserved = NULL;
     op++;
@@ -261,6 +264,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
       grpc_metadata_array_destroy(&trailing_metadata_recv[call_id]);
       grpc_call_unref(client_calls[call_id]);
       grpc_slice_unref(details[call_id]);
+      grpc_byte_buffer_destroy(request_payload[call_id]);
 
       pending_client_calls--;
     } else if (ev_tag < SERVER_RECV_BASE_TAG) {
@@ -351,7 +355,6 @@ void resource_quota_server(grpc_end2end_test_config config) {
           NUM_CALLS, cancelled_calls_on_server, cancelled_calls_on_client,
           deadline_exceeded, unavailable);
 
-  grpc_byte_buffer_destroy(request_payload);
   grpc_slice_unref(request_payload_slice);
   grpc_resource_quota_unref(resource_quota);
 
@@ -366,6 +369,7 @@ void resource_quota_server(grpc_end2end_test_config config) {
   free(call_details);
   free(status);
   free(details);
+  free(request_payload);
   free(request_payload_recv);
   free(was_cancelled);
 }
diff --git a/test/core/end2end/tests/shutdown_finishes_tags.c b/test/core/end2end/tests/shutdown_finishes_tags.c
index f9b8e4c955..7914cc95ba 100644
--- a/test/core/end2end/tests/shutdown_finishes_tags.c
+++ b/test/core/end2end/tests/shutdown_finishes_tags.c
@@ -78,7 +78,7 @@ static void test_early_server_shutdown_finishes_tags(
   grpc_end2end_test_fixture f = begin_test(
       config, "test_early_server_shutdown_finishes_tags", NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
-  grpc_call *s = (void *)1;
+  grpc_call *s = (grpc_call *)(uintptr_t)1;
   grpc_call_details call_details;
   grpc_metadata_array request_metadata_recv;
 
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 7a81133dfa..7ce7e1f285 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -27,6 +27,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/debug/stats.h"
 #include "src/core/lib/support/string.h"
 #include "test/core/end2end/cq_verifier.h"
 
@@ -102,6 +103,10 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_slice details;
   int was_cancelled = 2;
   char *peer;
+  grpc_stats_data *before = gpr_malloc(sizeof(grpc_stats_data));
+  grpc_stats_data *after = gpr_malloc(sizeof(grpc_stats_data));
+
+  grpc_stats_collect(before);
 
   gpr_timespec deadline = five_seconds_from_now();
   c = grpc_channel_create_call(
@@ -208,6 +213,25 @@ static void simple_request_body(grpc_end2end_test_config config,
   grpc_call_unref(s);
 
   cq_verifier_destroy(cqv);
+
+  grpc_stats_collect(after);
+
+  char *stats = grpc_stats_data_as_json(after);
+  gpr_log(GPR_DEBUG, "%s", stats);
+  gpr_free(stats);
+
+  int expected_calls = 1;
+  if (config.feature_mask & FEATURE_MASK_SUPPORTS_REQUEST_PROXYING) {
+    expected_calls *= 2;
+  }
+  GPR_ASSERT(after->counters[GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED] -
+                 before->counters[GRPC_STATS_COUNTER_CLIENT_CALLS_CREATED] ==
+             expected_calls);
+  GPR_ASSERT(after->counters[GRPC_STATS_COUNTER_SERVER_CALLS_CREATED] -
+                 before->counters[GRPC_STATS_COUNTER_SERVER_CALLS_CREATED] ==
+             expected_calls);
+  gpr_free(before);
+  gpr_free(after);
 }
 
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/stream_compression_compressed_payload.c b/test/core/end2end/tests/stream_compression_compressed_payload.c
new file mode 100644
index 0000000000..094c4de1c0
--- /dev/null
+++ b/test/core/end2end/tests/stream_compression_compressed_payload.c
@@ -0,0 +1,653 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/compression.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/call_test_only.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "test/core/end2end/cq_verifier.h"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_from_now(int n) {
+  return grpc_timeout_seconds_to_deadline(n);
+}
+
+static gpr_timespec five_seconds_from_now(void) {
+  return n_seconds_from_now(5);
+}
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_from_now(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000),
+                                         grpc_timeout_seconds_to_deadline(5),
+                                         NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+  grpc_completion_queue_destroy(f->shutdown_cq);
+}
+
+static void request_for_disabled_algorithm(
+    grpc_end2end_test_config config, const char *test_name,
+    uint32_t send_flags_bitmask,
+    grpc_stream_compression_algorithm algorithm_to_disable,
+    grpc_stream_compression_algorithm requested_client_compression_algorithm,
+    grpc_status_code expected_error, grpc_metadata *client_metadata) {
+  grpc_call *c;
+  grpc_call *s;
+  grpc_slice request_payload_slice;
+  grpc_byte_buffer *request_payload;
+  grpc_channel_args *client_args;
+  grpc_channel_args *server_args;
+  grpc_end2end_test_fixture f;
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+  cq_verifier *cqv;
+  char str[1024];
+
+  memset(str, 'x', 1023);
+  str[1023] = '\0';
+  request_payload_slice = grpc_slice_from_copied_string(str);
+  request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+
+  client_args = grpc_channel_args_set_stream_compression_algorithm(
+      NULL, requested_client_compression_algorithm);
+  server_args = grpc_channel_args_set_stream_compression_algorithm(
+      NULL, GRPC_STREAM_COMPRESS_NONE);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    server_args = grpc_channel_args_stream_compression_algorithm_set_state(
+        &exec_ctx, &server_args, algorithm_to_disable, false);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  f = begin_test(config, test_name, client_args, server_args);
+  cqv = cq_verifier_create(f.cq);
+
+  gpr_timespec deadline = five_seconds_from_now();
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  if (client_metadata != NULL) {
+    op->data.send_initial_metadata.count = 1;
+    op->data.send_initial_metadata.metadata = client_metadata;
+  } else {
+    op->data.send_initial_metadata.count = 0;
+  }
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = request_payload;
+  op->flags = send_flags_bitmask;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(101), true);
+  cq_verify(cqv);
+
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &request_payload_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(102), false);
+
+  op = ops;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(103), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(1), true);
+  cq_verify(cqv);
+
+  /* call was cancelled (closed) ... */
+  GPR_ASSERT(was_cancelled != 0);
+  /* with a certain error */
+  GPR_ASSERT(status == expected_error);
+
+  const char *algo_name = NULL;
+  GPR_ASSERT(
+      grpc_stream_compression_algorithm_name(algorithm_to_disable, &algo_name));
+  char *expected_details = NULL;
+  gpr_asprintf(&expected_details,
+               "Stream compression algorithm '%s' is disabled.", algo_name);
+  /* and we expect a specific reason for it */
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, expected_details));
+  gpr_free(expected_details);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_unref(c);
+  grpc_call_unref(s);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_slice_unref(request_payload_slice);
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void request_with_payload_template(
+    grpc_end2end_test_config config, const char *test_name,
+    uint32_t client_send_flags_bitmask,
+    grpc_stream_compression_algorithm
+        default_client_channel_compression_algorithm,
+    grpc_stream_compression_algorithm
+        default_server_channel_compression_algorithm,
+    grpc_stream_compression_algorithm expected_client_compression_algorithm,
+    grpc_stream_compression_algorithm expected_server_compression_algorithm,
+    grpc_metadata *client_init_metadata, bool set_server_level,
+    grpc_stream_compression_level server_compression_level,
+    bool send_message_before_initial_metadata,
+    bool set_default_server_message_compression_algorithm,
+    grpc_compression_algorithm default_server_message_compression_algorithm) {
+  grpc_call *c;
+  grpc_call *s;
+  grpc_slice request_payload_slice;
+  grpc_byte_buffer *request_payload = NULL;
+  grpc_channel_args *client_args;
+  grpc_channel_args *server_args;
+  grpc_end2end_test_fixture f;
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_byte_buffer *response_payload;
+  grpc_byte_buffer *response_payload_recv;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+  cq_verifier *cqv;
+  char request_str[1024];
+  char response_str[1024];
+
+  memset(request_str, 'x', 1023);
+  request_str[1023] = '\0';
+
+  memset(response_str, 'y', 1023);
+  response_str[1023] = '\0';
+
+  request_payload_slice = grpc_slice_from_copied_string(request_str);
+  grpc_slice response_payload_slice =
+      grpc_slice_from_copied_string(response_str);
+
+  client_args = grpc_channel_args_set_stream_compression_algorithm(
+      NULL, default_client_channel_compression_algorithm);
+  if (set_default_server_message_compression_algorithm) {
+    server_args = grpc_channel_args_set_compression_algorithm(
+        NULL, default_server_message_compression_algorithm);
+  } else {
+    server_args = grpc_channel_args_set_stream_compression_algorithm(
+        NULL, default_server_channel_compression_algorithm);
+  }
+
+  f = begin_test(config, test_name, client_args, server_args);
+  cqv = cq_verifier_create(f.cq);
+
+  gpr_timespec deadline = five_seconds_from_now();
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  if (send_message_before_initial_metadata) {
+    request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = request_payload;
+    op->flags = client_send_flags_bitmask;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+    CQ_EXPECT_COMPLETION(cqv, tag(2), true);
+  }
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  if (client_init_metadata != NULL) {
+    op->data.send_initial_metadata.count = 1;
+    op->data.send_initial_metadata.metadata = client_init_metadata;
+  } else {
+    op->data.send_initial_metadata.count = 0;
+  }
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(100));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(100), true);
+  cq_verify(cqv);
+
+  GPR_ASSERT(GPR_BITCOUNT(grpc_call_test_only_get_encodings_accepted_by_peer(
+                 s)) == GRPC_COMPRESS_ALGORITHMS_COUNT);
+  GPR_ASSERT(GPR_BITGET(grpc_call_test_only_get_encodings_accepted_by_peer(s),
+                        GRPC_COMPRESS_NONE) != 0);
+  GPR_ASSERT(GPR_BITGET(grpc_call_test_only_get_encodings_accepted_by_peer(s),
+                        GRPC_COMPRESS_DEFLATE) != 0);
+  GPR_ASSERT(GPR_BITGET(grpc_call_test_only_get_encodings_accepted_by_peer(s),
+                        GRPC_COMPRESS_GZIP) != 0);
+  GPR_ASSERT(
+      GPR_BITCOUNT(grpc_call_test_only_get_stream_encodings_accepted_by_peer(
+          s)) == GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT);
+  GPR_ASSERT(
+      GPR_BITGET(grpc_call_test_only_get_stream_encodings_accepted_by_peer(s),
+                 GRPC_STREAM_COMPRESS_NONE) != 0);
+  GPR_ASSERT(
+      GPR_BITGET(grpc_call_test_only_get_stream_encodings_accepted_by_peer(s),
+                 GRPC_STREAM_COMPRESS_GZIP) != 0);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  if (set_server_level) {
+    op->data.send_initial_metadata.maybe_stream_compression_level.is_set = true;
+    op->data.send_initial_metadata.maybe_stream_compression_level.level =
+        server_compression_level;
+  }
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(101), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  for (int i = 0; i < 2; i++) {
+    response_payload = grpc_raw_byte_buffer_create(&response_payload_slice, 1);
+
+    if (i > 0 || !send_message_before_initial_metadata) {
+      request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+      memset(ops, 0, sizeof(ops));
+      op = ops;
+      op->op = GRPC_OP_SEND_MESSAGE;
+      op->data.send_message.send_message = request_payload;
+      op->flags = client_send_flags_bitmask;
+      op->reserved = NULL;
+      op++;
+      error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+      GPR_ASSERT(GRPC_CALL_OK == error);
+      CQ_EXPECT_COMPLETION(cqv, tag(2), 1);
+    }
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &request_payload_recv;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+
+    CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+    cq_verify(cqv);
+
+    GPR_ASSERT(request_payload_recv->type == GRPC_BB_RAW);
+    GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, request_str));
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = response_payload;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &response_payload_recv;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(3), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+
+    CQ_EXPECT_COMPLETION(cqv, tag(103), 1);
+    CQ_EXPECT_COMPLETION(cqv, tag(3), 1);
+    cq_verify(cqv);
+
+    GPR_ASSERT(response_payload_recv->type == GRPC_BB_RAW);
+    GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, response_str));
+
+    grpc_byte_buffer_destroy(request_payload);
+    grpc_byte_buffer_destroy(response_payload);
+    grpc_byte_buffer_destroy(request_payload_recv);
+    grpc_byte_buffer_destroy(response_payload_recv);
+  }
+
+  grpc_slice_unref(request_payload_slice);
+  grpc_slice_unref(response_payload_slice);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(4), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(104), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(4), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(104), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_OK);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 0);
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_unref(c);
+  grpc_call_unref(s);
+
+  cq_verifier_destroy(cqv);
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void test_invoke_request_with_compressed_payload(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload", 0,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_GZIP,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_GZIP, NULL,
+      false, /* ignored */
+      GRPC_STREAM_COMPRESS_LEVEL_NONE, false, false, GRPC_COMPRESS_NONE);
+}
+
+static void test_invoke_request_with_send_message_before_initial_metadata(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_send_message_before_initial_metadata",
+      0, GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_GZIP,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_GZIP, NULL,
+      false, /* ignored */
+      GRPC_STREAM_COMPRESS_LEVEL_NONE, true, false, GRPC_COMPRESS_NONE);
+}
+
+static void test_invoke_request_with_server_level(
+    grpc_end2end_test_config config) {
+  request_with_payload_template(
+      config, "test_invoke_request_with_server_level", 0,
+      GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE,
+      GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_GZIP,
+      /* ignored */ NULL, true, GRPC_STREAM_COMPRESS_LEVEL_HIGH, false, false,
+      GRPC_COMPRESS_NONE);
+}
+
+static void test_invoke_request_with_compressed_payload_md_override(
+    grpc_end2end_test_config config) {
+  grpc_metadata gzip_compression_override;
+  grpc_metadata identity_compression_override;
+
+  gzip_compression_override.key =
+      GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST;
+  gzip_compression_override.value = grpc_slice_from_static_string("gzip");
+  memset(&gzip_compression_override.internal_data, 0,
+         sizeof(gzip_compression_override.internal_data));
+
+  identity_compression_override.key =
+      GRPC_MDSTR_GRPC_INTERNAL_STREAM_ENCODING_REQUEST;
+  identity_compression_override.value =
+      grpc_slice_from_static_string("identity");
+  memset(&identity_compression_override.internal_data, 0,
+         sizeof(identity_compression_override.internal_data));
+
+  /* Channel default NONE (aka IDENTITY), call override to stream GZIP */
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload_md_override_1", 0,
+      GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_NONE,
+      &gzip_compression_override, false,
+      /*ignored*/ GRPC_STREAM_COMPRESS_LEVEL_NONE, false, false,
+      GRPC_COMPRESS_NONE);
+
+  /* Channel default stream GZIP, call override to NONE (aka IDENTITY) */
+  request_with_payload_template(
+      config, "test_invoke_request_with_compressed_payload_md_override_3", 0,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_NONE,
+      GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE,
+      &identity_compression_override, false,
+      /*ignored*/ GRPC_STREAM_COMPRESS_LEVEL_NONE, false, false,
+      GRPC_COMPRESS_NONE);
+}
+
+static void test_invoke_request_with_disabled_algorithm(
+    grpc_end2end_test_config config) {
+  request_for_disabled_algorithm(
+      config, "test_invoke_request_with_disabled_algorithm", 0,
+      GRPC_STREAM_COMPRESS_GZIP, GRPC_STREAM_COMPRESS_GZIP,
+      GRPC_STATUS_UNIMPLEMENTED, NULL);
+}
+
+static void test_stream_compression_override_message_compression(
+    grpc_end2end_test_config config) {
+  grpc_stream_compression_level level = GRPC_STREAM_COMPRESS_LEVEL_MED;
+  request_with_payload_template(
+      config, "test_stream_compression_override_message_compression", 0,
+      GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE,
+      GRPC_STREAM_COMPRESS_NONE,
+      grpc_stream_compression_algorithm_for_level(
+          level, (1u << GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT) - 1),
+      /* ignored */ NULL, true, level, false, true, GRPC_COMPRESS_GZIP);
+}
+
+void stream_compression_compressed_payload(grpc_end2end_test_config config) {
+  test_invoke_request_with_compressed_payload(config);
+  test_invoke_request_with_send_message_before_initial_metadata(config);
+  test_invoke_request_with_server_level(config);
+  test_invoke_request_with_compressed_payload_md_override(config);
+  test_invoke_request_with_disabled_algorithm(config);
+  test_stream_compression_override_message_compression(config);
+}
+
+void stream_compression_compressed_payload_pre_init(void) {}
diff --git a/test/core/end2end/tests/stream_compression_payload.c b/test/core/end2end/tests/stream_compression_payload.c
new file mode 100644
index 0000000000..e47d2aa93c
--- /dev/null
+++ b/test/core/end2end/tests/stream_compression_payload.c
@@ -0,0 +1,305 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/compression.h>
+#include <grpc/compression.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/call.h"
+#include "test/core/end2end/cq_verifier.h"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_from_now(int n) {
+  return grpc_timeout_seconds_to_deadline(n);
+}
+
+static gpr_timespec five_seconds_from_now(void) {
+  return n_seconds_from_now(5);
+}
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_from_now(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000),
+                                         grpc_timeout_seconds_to_deadline(5),
+                                         NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+  grpc_completion_queue_destroy(f->shutdown_cq);
+}
+
+/* Creates and returns a grpc_slice containing random alphanumeric characters.
+ */
+static grpc_slice generate_random_slice() {
+  size_t i;
+  static const char chars[] = "abcdefghijklmnopqrstuvwxyz1234567890";
+  char *output;
+  const size_t output_size = 1024 * 1024;
+  output = (char *)gpr_malloc(output_size);
+  for (i = 0; i < output_size - 1; ++i) {
+    output[i] = chars[rand() % (int)(sizeof(chars) - 1)];
+  }
+  output[output_size - 1] = '\0';
+  grpc_slice out = grpc_slice_from_copied_string(output);
+  gpr_free(output);
+  return out;
+}
+
+static void request_response_with_payload(grpc_end2end_test_config config,
+                                          grpc_end2end_test_fixture f) {
+  /* Create large request and response bodies. These are big enough to require
+   * multiple round trips to deliver to the peer, and their exact contents of
+   * will be verified on completion. */
+  grpc_slice request_payload_slice = generate_random_slice();
+  grpc_slice response_payload_slice = generate_random_slice();
+
+  grpc_call *c;
+  grpc_call *s;
+  grpc_byte_buffer *request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  grpc_byte_buffer *response_payload =
+      grpc_raw_byte_buffer_create(&response_payload_slice, 1);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_byte_buffer *response_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+
+  gpr_timespec deadline = n_seconds_from_now(60);
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &response_payload_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message.recv_message = &request_payload_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message.send_message = response_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_OK;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(103), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_OK);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(byte_buffer_eq_slice(request_payload_recv, request_payload_slice));
+  GPR_ASSERT(
+      byte_buffer_eq_slice(response_payload_recv, response_payload_slice));
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_unref(c);
+  grpc_call_unref(s);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(response_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+  grpc_byte_buffer_destroy(response_payload_recv);
+}
+
+/* Client sends a request with payload, server reads then returns a response
+   payload and status. */
+static void test_invoke_request_response_with_payload(
+    grpc_end2end_test_config config) {
+  grpc_channel_args *client_args =
+      grpc_channel_args_set_stream_compression_algorithm(
+          NULL, GRPC_STREAM_COMPRESS_GZIP);
+  grpc_channel_args *server_args =
+      grpc_channel_args_set_stream_compression_algorithm(
+          NULL, GRPC_STREAM_COMPRESS_GZIP);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_request_response_with_payload",
+                 client_args, server_args);
+  request_response_with_payload(config, f);
+  end_test(&f);
+  config.tear_down_data(&f);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+static void test_invoke_10_request_response_with_payload(
+    grpc_end2end_test_config config) {
+  int i;
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_invoke_10_request_response_with_payload", NULL, NULL);
+  for (i = 0; i < 10; i++) {
+    request_response_with_payload(config, f);
+  }
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void stream_compression_payload(grpc_end2end_test_config config) {
+  test_invoke_request_response_with_payload(config);
+  test_invoke_10_request_response_with_payload(config);
+}
+
+void stream_compression_payload_pre_init(void) {}
diff --git a/test/core/end2end/tests/stream_compression_ping_pong_streaming.c b/test/core/end2end/tests/stream_compression_ping_pong_streaming.c
new file mode 100644
index 0000000000..4c1a34cc64
--- /dev/null
+++ b/test/core/end2end/tests/stream_compression_ping_pong_streaming.c
@@ -0,0 +1,291 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/compression.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/surface/call.h"
+#include "test/core/end2end/cq_verifier.h"
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_from_now(int n) {
+  return grpc_timeout_seconds_to_deadline(n);
+}
+
+static gpr_timespec five_seconds_from_now(void) {
+  return n_seconds_from_now(5);
+}
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_from_now(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000),
+                                         grpc_timeout_seconds_to_deadline(5),
+                                         NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+  grpc_completion_queue_destroy(f->shutdown_cq);
+}
+
+/* Client pings and server pongs. Repeat messages rounds before finishing. */
+static void test_pingpong_streaming(grpc_end2end_test_config config,
+                                    int messages) {
+  grpc_channel_args *client_args =
+      grpc_channel_args_set_stream_compression_algorithm(
+          NULL, GRPC_STREAM_COMPRESS_GZIP);
+  grpc_channel_args *server_args =
+      grpc_channel_args_set_stream_compression_algorithm(
+          NULL, GRPC_STREAM_COMPRESS_GZIP);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_pingpong_streaming", client_args, server_args);
+  grpc_call *c;
+  grpc_call *s;
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+  grpc_byte_buffer *request_payload;
+  grpc_byte_buffer *request_payload_recv;
+  grpc_byte_buffer *response_payload;
+  grpc_byte_buffer *response_payload_recv;
+  int i;
+  grpc_slice request_payload_slice =
+      grpc_slice_from_copied_string("hello world");
+  grpc_slice response_payload_slice =
+      grpc_slice_from_copied_string("hello you");
+
+  gpr_timespec deadline = five_seconds_from_now();
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(100));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(100), 1);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(101), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  for (i = 0; i < messages; i++) {
+    request_payload = grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+    response_payload = grpc_raw_byte_buffer_create(&response_payload_slice, 1);
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = request_payload;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &response_payload_recv;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(2), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_RECV_MESSAGE;
+    op->data.recv_message.recv_message = &request_payload_recv;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+    CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+    cq_verify(cqv);
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_MESSAGE;
+    op->data.send_message.send_message = response_payload;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+    CQ_EXPECT_COMPLETION(cqv, tag(103), 1);
+    CQ_EXPECT_COMPLETION(cqv, tag(2), 1);
+    cq_verify(cqv);
+
+    grpc_byte_buffer_destroy(request_payload);
+    grpc_byte_buffer_destroy(response_payload);
+    grpc_byte_buffer_destroy(request_payload_recv);
+    grpc_byte_buffer_destroy(response_payload_recv);
+  }
+
+  grpc_slice_unref(request_payload_slice);
+  grpc_slice_unref(response_payload_slice);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(3), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(104), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(3), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(104), 1);
+  cq_verify(cqv);
+
+  grpc_call_unref(c);
+  grpc_call_unref(s);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_slice_unref(details);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_channel_args_destroy(&exec_ctx, client_args);
+    grpc_channel_args_destroy(&exec_ctx, server_args);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+void stream_compression_ping_pong_streaming(grpc_end2end_test_config config) {
+  int i;
+
+  for (i = 1; i < 10; i++) {
+    test_pingpong_streaming(config, i);
+  }
+}
+
+void stream_compression_ping_pong_streaming_pre_init(void) {}
diff --git a/test/core/fling/BUILD b/test/core/fling/BUILD
index b0d34e9eb0..27b2b5bec6 100644
--- a/test/core/fling/BUILD
+++ b/test/core/fling/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/fling")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/handshake/BUILD b/test/core/handshake/BUILD
index c93ddc8c21..8e462cfc5b 100644
--- a/test/core/handshake/BUILD
+++ b/test/core/handshake/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/handshake")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 grpc_cc_test(
     name = "client_ssl",
diff --git a/test/core/http/BUILD b/test/core/http/BUILD
index 28313082c6..fffdac5e08 100644
--- a/test/core/http/BUILD
+++ b/test/core/http/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/http")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/http/httpcli_test.c b/test/core/http/httpcli_test.c
index b8b96d673c..8a53903763 100644
--- a/test/core/http/httpcli_test.c
+++ b/test/core/http/httpcli_test.c
@@ -52,7 +52,7 @@ static void on_finish(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   g_done = 1;
   GPR_ASSERT(GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&g_pops), NULL)));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&g_pops), NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/http/httpscli_test.c b/test/core/http/httpscli_test.c
index a9d7abdcff..c7455bd8df 100644
--- a/test/core/http/httpscli_test.c
+++ b/test/core/http/httpscli_test.c
@@ -52,7 +52,7 @@ static void on_finish(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   g_done = 1;
   GPR_ASSERT(GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&g_pops), NULL)));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&g_pops), NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/iomgr/BUILD b/test/core/iomgr/BUILD
index 3e6fd37ec6..7620d1de21 100644
--- a/test/core/iomgr/BUILD
+++ b/test/core/iomgr/BUILD
@@ -12,19 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
-package(
-    default_visibility = ["//visibility:public"], # Useful for third party devs to test their io manager implementation.
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/iomgr", visibility = "public") # Useful for third party devs to test their io manager implementation.
 
 grpc_cc_library(
     name = "endpoint_tests",
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index 11b45e8e08..f8570edde7 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -77,7 +77,7 @@ static void end_test(grpc_endpoint_test_config config) { config.clean_up(); }
 static grpc_slice *allocate_blocks(size_t num_bytes, size_t slice_size,
                                    size_t *num_blocks, uint8_t *current_data) {
   size_t nslices = num_bytes / slice_size + (num_bytes % slice_size ? 1 : 0);
-  grpc_slice *slices = gpr_malloc(sizeof(grpc_slice) * nslices);
+  grpc_slice *slices = (grpc_slice *)gpr_malloc(sizeof(grpc_slice) * nslices);
   size_t num_bytes_left = num_bytes;
   size_t i;
   size_t j;
@@ -117,7 +117,8 @@ struct read_and_write_test_state {
 
 static void read_and_write_test_read_handler(grpc_exec_ctx *exec_ctx,
                                              void *data, grpc_error *error) {
-  struct read_and_write_test_state *state = data;
+  struct read_and_write_test_state *state =
+      (struct read_and_write_test_state *)data;
 
   state->bytes_read += count_slices(
       state->incoming.slices, state->incoming.count, &state->current_read_data);
@@ -125,7 +126,8 @@ static void read_and_write_test_read_handler(grpc_exec_ctx *exec_ctx,
     gpr_log(GPR_INFO, "Read handler done");
     gpr_mu_lock(g_mu);
     state->read_done = 1 + (error == GRPC_ERROR_NONE);
-    GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL));
+    GRPC_LOG_IF_ERROR("pollset_kick",
+                      grpc_pollset_kick(exec_ctx, g_pollset, NULL));
     gpr_mu_unlock(g_mu);
   } else if (error == GRPC_ERROR_NONE) {
     grpc_endpoint_read(exec_ctx, state->read_ep, &state->incoming,
@@ -135,7 +137,8 @@ static void read_and_write_test_read_handler(grpc_exec_ctx *exec_ctx,
 
 static void read_and_write_test_write_handler(grpc_exec_ctx *exec_ctx,
                                               void *data, grpc_error *error) {
-  struct read_and_write_test_state *state = data;
+  struct read_and_write_test_state *state =
+      (struct read_and_write_test_state *)data;
   grpc_slice *slices = NULL;
   size_t nslices;
 
@@ -160,7 +163,8 @@ static void read_and_write_test_write_handler(grpc_exec_ctx *exec_ctx,
   gpr_log(GPR_INFO, "Write handler done");
   gpr_mu_lock(g_mu);
   state->write_done = 1 + (error == GRPC_ERROR_NONE);
-  GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL));
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, g_pollset, NULL));
   gpr_mu_unlock(g_mu);
 }
 
@@ -252,7 +256,8 @@ static void inc_on_failure(grpc_exec_ctx *exec_ctx, void *arg,
                            grpc_error *error) {
   gpr_mu_lock(g_mu);
   *(int *)arg += (error != GRPC_ERROR_NONE);
-  GPR_ASSERT(GRPC_LOG_IF_ERROR("kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(
+      GRPC_LOG_IF_ERROR("kick", grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/iomgr/ev_epollsig_linux_test.c b/test/core/iomgr/ev_epollsig_linux_test.c
index c702065d4d..cca07bf002 100644
--- a/test/core/iomgr/ev_epollsig_linux_test.c
+++ b/test/core/iomgr/ev_epollsig_linux_test.c
@@ -26,6 +26,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
@@ -308,9 +309,8 @@ static void test_threading(void) {
 int main(int argc, char **argv) {
   const char *poll_strategy = NULL;
   grpc_test_init(argc, argv);
+  grpc_init();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
 
   poll_strategy = grpc_get_poll_strategy_name();
   if (poll_strategy != NULL && strcmp(poll_strategy, "epollsig") == 0) {
@@ -323,8 +323,8 @@ int main(int argc, char **argv) {
             poll_strategy);
   }
 
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
 #else /* defined(GRPC_LINUX_EPOLL) */
diff --git a/test/core/iomgr/fd_conservation_posix_test.c b/test/core/iomgr/fd_conservation_posix_test.c
index 3c61173ecd..d29b1e8e41 100644
--- a/test/core/iomgr/fd_conservation_posix_test.c
+++ b/test/core/iomgr/fd_conservation_posix_test.c
@@ -30,9 +30,8 @@ int main(int argc, char **argv) {
   grpc_endpoint_pair p;
 
   grpc_test_init(argc, argv);
+  grpc_init();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
 
   /* set max # of file descriptors to a low value, and
      verify we can create and destroy many more than this number
@@ -51,7 +50,7 @@ int main(int argc, char **argv) {
 
   grpc_resource_quota_unref(resource_quota);
 
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/fd_posix_test.c b/test/core/iomgr/fd_posix_test.c
index 85d5d9c07f..881277a8d6 100644
--- a/test/core/iomgr/fd_posix_test.c
+++ b/test/core/iomgr/fd_posix_test.c
@@ -35,6 +35,7 @@
 #include <sys/time.h>
 #include <unistd.h>
 
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -177,8 +178,8 @@ static void listen_shutdown_cb(grpc_exec_ctx *exec_ctx, void *arg /*server */,
 
   gpr_mu_lock(g_mu);
   sv->done = 1;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
@@ -296,8 +297,8 @@ static void client_session_shutdown_cb(grpc_exec_ctx *exec_ctx,
   grpc_fd_orphan(exec_ctx, cl->em_fd, NULL, NULL, false /* already_closed */,
                  "c");
   cl->done = 1;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
 }
 
 /* Write as much as possible, then register notify_on_write. */
@@ -416,8 +417,8 @@ static void first_read_callback(grpc_exec_ctx *exec_ctx,
 
   gpr_mu_lock(g_mu);
   fdc->cb_that_ran = first_read_callback;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
@@ -428,8 +429,8 @@ static void second_read_callback(grpc_exec_ctx *exec_ctx,
 
   gpr_mu_lock(g_mu);
   fdc->cb_that_ran = second_read_callback;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
@@ -530,8 +531,7 @@ int main(int argc, char **argv) {
   grpc_closure destroyed;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_test_init(argc, argv);
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
+  grpc_init();
   g_pollset = gpr_zalloc(grpc_pollset_size());
   grpc_pollset_init(g_pollset, &g_mu);
   test_grpc_fd();
@@ -541,8 +541,8 @@ int main(int argc, char **argv) {
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
   grpc_exec_ctx_flush(&exec_ctx);
   gpr_free(g_pollset);
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
 
diff --git a/test/core/iomgr/pollset_set_test.c b/test/core/iomgr/pollset_set_test.c
index 5750ac0f4b..70efca8b16 100644
--- a/test/core/iomgr/pollset_set_test.c
+++ b/test/core/iomgr/pollset_set_test.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
@@ -433,8 +434,7 @@ int main(int argc, char **argv) {
   const char *poll_strategy = grpc_get_poll_strategy_name();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_test_init(argc, argv);
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
+  grpc_init();
 
   if (poll_strategy != NULL &&
       (strcmp(poll_strategy, "epoll") == 0 ||
@@ -449,8 +449,8 @@ int main(int argc, char **argv) {
             poll_strategy);
   }
 
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
 #else /* defined(GRPC_LINUX_EPOLL) */
diff --git a/test/core/iomgr/resolve_address_posix_test.c b/test/core/iomgr/resolve_address_posix_test.c
index 9cc09ed5d3..e4be99f03c 100644
--- a/test/core/iomgr/resolve_address_posix_test.c
+++ b/test/core/iomgr/resolve_address_posix_test.c
@@ -21,12 +21,14 @@
 #include <string.h>
 #include <sys/un.h>
 
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+
 #include "src/core/lib/iomgr/executor.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "test/core/util/test_config.h"
@@ -159,13 +161,12 @@ static void test_unix_socket_path_name_too_long(void) {
 
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
+  grpc_init();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
   test_unix_socket();
   test_unix_socket_path_name_too_long();
   grpc_executor_shutdown(&exec_ctx);
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/resolve_address_test.c b/test/core/iomgr/resolve_address_test.c
index cb156ee61e..1110c04b6e 100644
--- a/test/core/iomgr/resolve_address_test.c
+++ b/test/core/iomgr/resolve_address_test.c
@@ -17,6 +17,7 @@
  */
 
 #include "src/core/lib/iomgr/resolve_address.h"
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
@@ -105,7 +106,8 @@ static void must_succeed(grpc_exec_ctx *exec_ctx, void *argsp,
   GPR_ASSERT(args->addrs->naddrs > 0);
   gpr_atm_rel_store(&args->done_atm, 1);
   gpr_mu_lock(args->mu);
-  GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(args->pollset, NULL));
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, args->pollset, NULL));
   gpr_mu_unlock(args->mu);
 }
 
@@ -114,7 +116,8 @@ static void must_fail(grpc_exec_ctx *exec_ctx, void *argsp, grpc_error *err) {
   GPR_ASSERT(err != GRPC_ERROR_NONE);
   gpr_atm_rel_store(&args->done_atm, 1);
   gpr_mu_lock(args->mu);
-  GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(args->pollset, NULL));
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, args->pollset, NULL));
   gpr_mu_unlock(args->mu);
 }
 
@@ -250,9 +253,8 @@ static void test_unparseable_hostports(void) {
 
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
+  grpc_init();
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_iomgr_init(&exec_ctx);
-  grpc_iomgr_start(&exec_ctx);
   test_localhost();
   test_default_port();
   test_non_numeric_default_port();
@@ -262,7 +264,7 @@ int main(int argc, char **argv) {
   test_invalid_ip_addresses();
   test_unparseable_hostports();
   grpc_executor_shutdown(&exec_ctx);
-  grpc_iomgr_shutdown(&exec_ctx);
   grpc_exec_ctx_finish(&exec_ctx);
+  grpc_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 00ea495bbe..1032da942b 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -53,8 +53,10 @@ static gpr_timespec test_deadline(void) {
 static void finish_connection() {
   gpr_mu_lock(g_mu);
   g_connections_complete++;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(&exec_ctx, g_pollset, NULL)));
+  grpc_exec_ctx_finish(&exec_ctx);
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/iomgr/tcp_client_uv_test.c b/test/core/iomgr/tcp_client_uv_test.c
index 9927356613..0f1db4705b 100644
--- a/test/core/iomgr/tcp_client_uv_test.c
+++ b/test/core/iomgr/tcp_client_uv_test.c
@@ -46,11 +46,11 @@ static gpr_timespec test_deadline(void) {
   return grpc_timeout_seconds_to_deadline(10);
 }
 
-static void finish_connection() {
+static void finish_connection(grpc_exec_ctx *exec_ctx) {
   gpr_mu_lock(g_mu);
   g_connections_complete++;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
@@ -63,13 +63,13 @@ static void must_succeed(grpc_exec_ctx *exec_ctx, void *arg,
       GRPC_ERROR_CREATE_FROM_STATIC_STRING("must_succeed called"));
   grpc_endpoint_destroy(exec_ctx, g_connecting);
   g_connecting = NULL;
-  finish_connection();
+  finish_connection(exec_ctx);
 }
 
 static void must_fail(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   GPR_ASSERT(g_connecting == NULL);
   GPR_ASSERT(error != GRPC_ERROR_NONE);
-  finish_connection();
+  finish_connection(exec_ctx);
 }
 
 static void close_cb(uv_handle_t *handle) { gpr_free(handle); }
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index c45068e7ec..cfb3cf897c 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -89,7 +89,7 @@ static ssize_t fill_socket(int fd) {
 static size_t fill_socket_partial(int fd, size_t bytes) {
   ssize_t write_bytes;
   size_t total_bytes = 0;
-  unsigned char *buf = gpr_malloc(bytes);
+  unsigned char *buf = (unsigned char *)gpr_malloc(bytes);
   unsigned i;
   for (i = 0; i < bytes; ++i) {
     buf[i] = (uint8_t)(i % 256);
@@ -147,7 +147,8 @@ static void read_cb(grpc_exec_ctx *exec_ctx, void *user_data,
   gpr_log(GPR_INFO, "Read %" PRIuPTR " bytes of %" PRIuPTR, read_bytes,
           state->target_read_bytes);
   if (state->read_bytes >= state->target_read_bytes) {
-    GPR_ASSERT(GRPC_LOG_IF_ERROR("kick", grpc_pollset_kick(g_pollset, NULL)));
+    GPR_ASSERT(GRPC_LOG_IF_ERROR("kick",
+                                 grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
     gpr_mu_unlock(g_mu);
   } else {
     grpc_endpoint_read(exec_ctx, state->ep, &state->incoming, &state->read_cb);
@@ -267,7 +268,7 @@ struct write_socket_state {
 static grpc_slice *allocate_blocks(size_t num_bytes, size_t slice_size,
                                    size_t *num_blocks, uint8_t *current_data) {
   size_t nslices = num_bytes / slice_size + (num_bytes % slice_size ? 1u : 0u);
-  grpc_slice *slices = gpr_malloc(sizeof(grpc_slice) * nslices);
+  grpc_slice *slices = (grpc_slice *)gpr_malloc(sizeof(grpc_slice) * nslices);
   size_t num_bytes_left = num_bytes;
   unsigned i, j;
   unsigned char *buf;
@@ -295,13 +296,13 @@ static void write_done(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(g_mu);
   gpr_log(GPR_INFO, "Signalling write done");
   state->write_done = 1;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
 void drain_socket_blocking(int fd, size_t num_bytes, size_t read_size) {
-  unsigned char *buf = gpr_malloc(read_size);
+  unsigned char *buf = (unsigned char *)gpr_malloc(read_size);
   ssize_t bytes_read;
   size_t bytes_left = num_bytes;
   int flags;
@@ -404,10 +405,10 @@ static void write_test(size_t num_bytes, size_t slice_size) {
 }
 
 void on_fd_released(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *errors) {
-  int *done = arg;
+  int *done = (int *)arg;
   *done = 1;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
 }
 
 /* Do a read_test, then release fd and try to read/write again. Verify that
@@ -548,7 +549,7 @@ static grpc_endpoint_test_config configs[] = {
 
 static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *p,
                             grpc_error *error) {
-  grpc_pollset_destroy(exec_ctx, p);
+  grpc_pollset_destroy(exec_ctx, (grpc_pollset *)p);
 }
 
 int main(int argc, char **argv) {
@@ -556,7 +557,7 @@ int main(int argc, char **argv) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_test_init(argc, argv);
   grpc_init();
-  g_pollset = gpr_zalloc(grpc_pollset_size());
+  g_pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
   grpc_pollset_init(g_pollset, &g_mu);
   grpc_endpoint_tests(configs[0], g_pollset, g_mu);
   run_tests();
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 2371721a60..4d84608376 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -159,8 +159,8 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
   gpr_mu_lock(g_mu);
   g_result = temp_result;
   g_nconnects++;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/iomgr/tcp_server_uv_test.c b/test/core/iomgr/tcp_server_uv_test.c
index 8f4d553d1e..bd8ccb4f60 100644
--- a/test/core/iomgr/tcp_server_uv_test.c
+++ b/test/core/iomgr/tcp_server_uv_test.c
@@ -111,8 +111,8 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
   gpr_mu_lock(g_mu);
   g_result = temp_result;
   g_nconnects++;
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/iomgr/udp_server_test.c b/test/core/iomgr/udp_server_test.c
index aa34857dbd..1d051bea62 100644
--- a/test/core/iomgr/udp_server_test.c
+++ b/test/core/iomgr/udp_server_test.c
@@ -61,8 +61,8 @@ static void on_read(grpc_exec_ctx *exec_ctx, grpc_fd *emfd, void *user_data) {
   g_number_of_reads++;
   g_number_of_bytes_read += (int)byte_count;
 
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
@@ -70,8 +70,8 @@ static void on_write(grpc_exec_ctx *exec_ctx, grpc_fd *emfd, void *user_data) {
   gpr_mu_lock(g_mu);
   g_number_of_writes++;
 
-  GPR_ASSERT(
-      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("pollset_kick",
+                               grpc_pollset_kick(exec_ctx, g_pollset, NULL)));
   gpr_mu_unlock(g_mu);
 }
 
diff --git a/test/core/json/BUILD b/test/core/json/BUILD
index 36b0897d80..3ff7918677 100644
--- a/test/core/json/BUILD
+++ b/test/core/json/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/json")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/nanopb/BUILD b/test/core/nanopb/BUILD
index bdb468867d..f332207e2d 100644
--- a/test/core/nanopb/BUILD
+++ b/test/core/nanopb/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/nanopb")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/network_benchmarks/BUILD b/test/core/network_benchmarks/BUILD
index cee23ecd51..0e15393030 100644
--- a/test/core/network_benchmarks/BUILD
+++ b/test/core/network_benchmarks/BUILD
@@ -12,17 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
-
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
+grpc_package(name = "test/core/network_benchmarks",
+             features = ["-layering_check", "-parse_headers" ]
 )
 
+licenses(["notice"])  # Apache v2
+
 grpc_cc_binary(
     name = "low_level_ping_pong",
     srcs = ["low_level_ping_pong.c"],
diff --git a/test/core/security/BUILD b/test/core/security/BUILD
index 241ffc0591..dc41759922 100644
--- a/test/core/security/BUILD
+++ b/test/core/security/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/security")
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/security/oauth2_utils.c b/test/core/security/oauth2_utils.c
index fdbc6ea741..d240403a29 100644
--- a/test/core/security/oauth2_utils.c
+++ b/test/core/security/oauth2_utils.c
@@ -60,7 +60,8 @@ static void on_oauth2_response(grpc_exec_ctx *exec_ctx, void *arg,
   request->token = token;
   GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&request->pops), NULL));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&request->pops),
+                        NULL));
   gpr_mu_unlock(request->mu);
 }
 
diff --git a/test/core/security/print_google_default_creds_token.c b/test/core/security/print_google_default_creds_token.c
index e1385a80ca..3144717a85 100644
--- a/test/core/security/print_google_default_creds_token.c
+++ b/test/core/security/print_google_default_creds_token.c
@@ -57,7 +57,8 @@ static void on_metadata_response(grpc_exec_ctx *exec_ctx, void *arg,
   sync->is_done = true;
   GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&sync->pops), NULL));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&sync->pops),
+                        NULL));
   gpr_mu_unlock(sync->mu);
 }
 
diff --git a/test/core/security/secure_endpoint_test.c b/test/core/security/secure_endpoint_test.c
index 7ecd947e1f..839a05fa9b 100644
--- a/test/core/security/secure_endpoint_test.c
+++ b/test/core/security/secure_endpoint_test.c
@@ -36,12 +36,19 @@ static gpr_mu *g_mu;
 static grpc_pollset *g_pollset;
 
 static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
-    size_t slice_size, grpc_slice *leftover_slices, size_t leftover_nslices) {
+    size_t slice_size, grpc_slice *leftover_slices, size_t leftover_nslices,
+    bool use_zero_copy_protector) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   tsi_frame_protector *fake_read_protector =
       tsi_create_fake_frame_protector(NULL);
   tsi_frame_protector *fake_write_protector =
       tsi_create_fake_frame_protector(NULL);
+  tsi_zero_copy_grpc_protector *fake_read_zero_copy_protector =
+      use_zero_copy_protector ? tsi_create_fake_zero_copy_grpc_protector(NULL)
+                              : NULL;
+  tsi_zero_copy_grpc_protector *fake_write_zero_copy_protector =
+      use_zero_copy_protector ? tsi_create_fake_zero_copy_grpc_protector(NULL)
+                              : NULL;
   grpc_endpoint_test_fixture f;
   grpc_endpoint_pair tcp;
 
@@ -54,15 +61,16 @@ static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
   grpc_endpoint_add_to_pollset(&exec_ctx, tcp.server, g_pollset);
 
   if (leftover_nslices == 0) {
-    f.client_ep =
-        grpc_secure_endpoint_create(fake_read_protector, tcp.client, NULL, 0);
+    f.client_ep = grpc_secure_endpoint_create(fake_read_protector,
+                                              fake_read_zero_copy_protector,
+                                              tcp.client, NULL, 0);
   } else {
     unsigned i;
     tsi_result result;
     size_t still_pending_size;
     size_t total_buffer_size = 8192;
     size_t buffer_size = total_buffer_size;
-    uint8_t *encrypted_buffer = gpr_malloc(buffer_size);
+    uint8_t *encrypted_buffer = (uint8_t *)gpr_malloc(buffer_size);
     uint8_t *cur = encrypted_buffer;
     grpc_slice encrypted_leftover;
     for (i = 0; i < leftover_nslices; i++) {
@@ -96,31 +104,47 @@ static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
     } while (still_pending_size > 0);
     encrypted_leftover = grpc_slice_from_copied_buffer(
         (const char *)encrypted_buffer, total_buffer_size - buffer_size);
-    f.client_ep = grpc_secure_endpoint_create(fake_read_protector, tcp.client,
-                                              &encrypted_leftover, 1);
+    f.client_ep = grpc_secure_endpoint_create(
+        fake_read_protector, fake_read_zero_copy_protector, tcp.client,
+        &encrypted_leftover, 1);
     grpc_slice_unref(encrypted_leftover);
     gpr_free(encrypted_buffer);
   }
 
-  f.server_ep =
-      grpc_secure_endpoint_create(fake_write_protector, tcp.server, NULL, 0);
+  f.server_ep = grpc_secure_endpoint_create(fake_write_protector,
+                                            fake_write_zero_copy_protector,
+                                            tcp.server, NULL, 0);
   grpc_exec_ctx_finish(&exec_ctx);
   return f;
 }
 
 static grpc_endpoint_test_fixture
 secure_endpoint_create_fixture_tcp_socketpair_noleftover(size_t slice_size) {
-  return secure_endpoint_create_fixture_tcp_socketpair(slice_size, NULL, 0);
+  return secure_endpoint_create_fixture_tcp_socketpair(slice_size, NULL, 0,
+                                                       false);
+}
+
+static grpc_endpoint_test_fixture
+secure_endpoint_create_fixture_tcp_socketpair_noleftover_zero_copy(
+    size_t slice_size) {
+  return secure_endpoint_create_fixture_tcp_socketpair(slice_size, NULL, 0,
+                                                       true);
 }
 
 static grpc_endpoint_test_fixture
 secure_endpoint_create_fixture_tcp_socketpair_leftover(size_t slice_size) {
   grpc_slice s =
       grpc_slice_from_copied_string("hello world 12345678900987654321");
-  grpc_endpoint_test_fixture f;
+  return secure_endpoint_create_fixture_tcp_socketpair(slice_size, &s, 1,
+                                                       false);
+}
 
-  f = secure_endpoint_create_fixture_tcp_socketpair(slice_size, &s, 1);
-  return f;
+static grpc_endpoint_test_fixture
+secure_endpoint_create_fixture_tcp_socketpair_leftover_zero_copy(
+    size_t slice_size) {
+  grpc_slice s =
+      grpc_slice_from_copied_string("hello world 12345678900987654321");
+  return secure_endpoint_create_fixture_tcp_socketpair(slice_size, &s, 1, true);
 }
 
 static void clean_up(void) {}
@@ -128,8 +152,14 @@ static void clean_up(void) {}
 static grpc_endpoint_test_config configs[] = {
     {"secure_ep/tcp_socketpair",
      secure_endpoint_create_fixture_tcp_socketpair_noleftover, clean_up},
+    {"secure_ep/tcp_socketpair_zero_copy",
+     secure_endpoint_create_fixture_tcp_socketpair_noleftover_zero_copy,
+     clean_up},
     {"secure_ep/tcp_socketpair_leftover",
      secure_endpoint_create_fixture_tcp_socketpair_leftover, clean_up},
+    {"secure_ep/tcp_socketpair_leftover_zero_copy",
+     secure_endpoint_create_fixture_tcp_socketpair_leftover_zero_copy,
+     clean_up},
 };
 
 static void inc_call_ctr(grpc_exec_ctx *exec_ctx, void *arg,
@@ -172,7 +202,7 @@ static void test_leftover(grpc_endpoint_test_config config, size_t slice_size) {
 
 static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *p,
                             grpc_error *error) {
-  grpc_pollset_destroy(exec_ctx, p);
+  grpc_pollset_destroy(exec_ctx, (grpc_pollset *)p);
 }
 
 int main(int argc, char **argv) {
@@ -181,10 +211,12 @@ int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
 
   grpc_init();
-  g_pollset = gpr_zalloc(grpc_pollset_size());
+  g_pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
   grpc_pollset_init(g_pollset, &g_mu);
   grpc_endpoint_tests(configs[0], g_pollset, g_mu);
-  test_leftover(configs[1], 1);
+  grpc_endpoint_tests(configs[1], g_pollset, g_mu);
+  test_leftover(configs[2], 1);
+  test_leftover(configs[3], 1);
   GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, g_pollset,
                     grpc_schedule_on_exec_ctx);
   grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
diff --git a/test/core/security/verify_jwt.c b/test/core/security/verify_jwt.c
index 259038f4d6..5faa6352a8 100644
--- a/test/core/security/verify_jwt.c
+++ b/test/core/security/verify_jwt.c
@@ -66,7 +66,8 @@ static void on_jwt_verification_done(grpc_exec_ctx *exec_ctx, void *user_data,
 
   gpr_mu_lock(sync->mu);
   sync->is_done = 1;
-  GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(sync->pollset, NULL));
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, sync->pollset, NULL));
   gpr_mu_unlock(sync->mu);
 }
 
diff --git a/test/core/slice/BUILD b/test/core/slice/BUILD
index 9f2225adfb..f86a3a6082 100644
--- a/test/core/slice/BUILD
+++ b/test/core/slice/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-licenses(["notice"])  # Apache v2
+grpc_package(name = "test/core/slice")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+licenses(["notice"])  # Apache v2
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/support/BUILD b/test/core/support/BUILD
index 7e142c1e3f..096576e13c 100644
--- a/test/core/support/BUILD
+++ b/test/core/support/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/support")
 
 grpc_cc_test(
     name = "alloc_test",
diff --git a/test/core/support/string_test.c b/test/core/support/string_test.c
index a3c33c3fa4..bee2139477 100644
--- a/test/core/support/string_test.c
+++ b/test/core/support/string_test.c
@@ -279,6 +279,21 @@ static void test_memrchr(void) {
   GPR_ASSERT(0 == strcmp((const char *)gpr_memrchr("hello", 'l', 5), "lo"));
 }
 
+static void test_is_true(void) {
+  LOG_TEST_NAME("test_is_true");
+
+  GPR_ASSERT(true == gpr_is_true("True"));
+  GPR_ASSERT(true == gpr_is_true("true"));
+  GPR_ASSERT(true == gpr_is_true("TRUE"));
+  GPR_ASSERT(true == gpr_is_true("Yes"));
+  GPR_ASSERT(true == gpr_is_true("yes"));
+  GPR_ASSERT(true == gpr_is_true("YES"));
+  GPR_ASSERT(true == gpr_is_true("1"));
+  GPR_ASSERT(false == gpr_is_true(NULL));
+  GPR_ASSERT(false == gpr_is_true(""));
+  GPR_ASSERT(false == gpr_is_true("0"));
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_strdup();
@@ -292,5 +307,6 @@ int main(int argc, char **argv) {
   test_leftpad();
   test_stricmp();
   test_memrchr();
+  test_is_true();
   return 0;
 }
diff --git a/test/core/surface/BUILD b/test/core/surface/BUILD
index 2923927412..17db7737f7 100644
--- a/test/core/surface/BUILD
+++ b/test/core/surface/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/surface")
 
 grpc_cc_test(
     name = "alarm_test",
diff --git a/test/core/surface/alarm_test.c b/test/core/surface/alarm_test.c
index 6971d92074..4fd7cb93c6 100644
--- a/test/core/surface/alarm_test.c
+++ b/test/core/surface/alarm_test.c
@@ -48,45 +48,50 @@ static void test_alarm(void) {
     /* regular expiry */
     grpc_event ev;
     void *tag = create_test_tag();
-    grpc_alarm *alarm =
-        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(1), tag);
+    grpc_alarm *alarm = grpc_alarm_create(NULL);
+    grpc_alarm_set(alarm, cc, grpc_timeout_seconds_to_deadline(1), tag, NULL);
 
     ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(2),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
     GPR_ASSERT(ev.success);
-    grpc_alarm_destroy(alarm);
+    grpc_alarm_destroy(alarm, NULL);
   }
   {
     /* cancellation */
     grpc_event ev;
     void *tag = create_test_tag();
-    grpc_alarm *alarm =
-        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(2), tag);
+    grpc_alarm *alarm = grpc_alarm_create(NULL);
+    grpc_alarm_set(alarm, cc, grpc_timeout_seconds_to_deadline(2), tag, NULL);
 
-    grpc_alarm_cancel(alarm);
+    grpc_alarm_cancel(alarm, NULL);
     ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(1),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
     GPR_ASSERT(ev.success == 0);
-    grpc_alarm_destroy(alarm);
+    grpc_alarm_destroy(alarm, NULL);
   }
   {
     /* alarm_destroy before cq_next */
     grpc_event ev;
     void *tag = create_test_tag();
-    grpc_alarm *alarm =
-        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(2), tag);
+    grpc_alarm *alarm = grpc_alarm_create(NULL);
+    grpc_alarm_set(alarm, cc, grpc_timeout_seconds_to_deadline(2), tag, NULL);
 
-    grpc_alarm_destroy(alarm);
+    grpc_alarm_destroy(alarm, NULL);
     ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(1),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
     GPR_ASSERT(ev.success == 0);
   }
+  {
+    /* alarm_destroy before set */
+    grpc_alarm *alarm = grpc_alarm_create(NULL);
+    grpc_alarm_destroy(alarm, NULL);
+  }
 
   shutdown_and_destroy(cc);
 }
diff --git a/test/core/surface/concurrent_connectivity_test.c b/test/core/surface/concurrent_connectivity_test.c
index 08079b6091..ec2cd8610b 100644
--- a/test/core/surface/concurrent_connectivity_test.c
+++ b/test/core/surface/concurrent_connectivity_test.c
@@ -108,7 +108,8 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *vargs, grpc_endpoint *tcp,
                          GRPC_ERROR_CREATE_FROM_STATIC_STRING("Connected"));
   grpc_endpoint_destroy(exec_ctx, tcp);
   gpr_mu_lock(args->mu);
-  GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(args->pollset, NULL));
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, args->pollset, NULL));
   gpr_mu_unlock(args->mu);
 }
 
diff --git a/test/core/surface/public_headers_must_be_c89.c b/test/core/surface/public_headers_must_be_c89.c
index 3b1c53390b..d36d116afb 100644
--- a/test/core/surface/public_headers_must_be_c89.c
+++ b/test/core/surface/public_headers_must_be_c89.c
@@ -24,6 +24,7 @@
 #include <grpc/grpc_security.h>
 #include <grpc/grpc_security_constants.h>
 #include <grpc/impl/codegen/atm.h>
+#include <grpc/impl/codegen/byte_buffer.h>
 #include <grpc/impl/codegen/byte_buffer_reader.h>
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/connectivity_state.h>
@@ -36,6 +37,7 @@
 #include <grpc/impl/codegen/slice.h>
 #include <grpc/impl/codegen/status.h>
 #include <grpc/impl/codegen/sync.h>
+#include <grpc/impl/codegen/sync_custom.h>
 #include <grpc/impl/codegen/sync_generic.h>
 #include <grpc/load_reporting.h>
 #include <grpc/slice.h>
@@ -53,6 +55,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/subprocess.h>
 #include <grpc/support/sync.h>
+#include <grpc/support/sync_custom.h>
 #include <grpc/support/sync_generic.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
diff --git a/test/core/transport/BUILD b/test/core/transport/BUILD
index 040c0c35c2..12e36132c8 100644
--- a/test/core/transport/BUILD
+++ b/test/core/transport/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/transport")
 
 grpc_cc_test(
     name = "bdp_estimator_test",
diff --git a/test/core/transport/chttp2/BUILD b/test/core/transport/chttp2/BUILD
index e3989f7059..6081940243 100644
--- a/test/core/transport/chttp2/BUILD
+++ b/test/core/transport/chttp2/BUILD
@@ -12,16 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/transport/chttp2")
 
 load("//test/core/util:grpc_fuzzer.bzl", "grpc_fuzzer")
 
diff --git a/test/core/tsi/BUILD b/test/core/tsi/BUILD
index 3bbc50b27e..0c5509dda6 100644
--- a/test/core/tsi/BUILD
+++ b/test/core/tsi/BUILD
@@ -12,14 +12,59 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
+grpc_package(name = "test/core/tsi")
+
+grpc_cc_library(
+    name = "transport_security_test_lib",
+    srcs = ["transport_security_test_lib.c"],
+    hdrs = ["transport_security_test_lib.h"],
+    deps = [
+        "//:grpc",
+        "//:tsi",
+    ],
+)
+
+grpc_cc_test(
+    name = "fake_transport_security_test",
+    srcs = ["fake_transport_security_test.c"],
+    language = "C",
+    deps = [
+        ":transport_security_test_lib",
+        "//:grpc",
+        "//:gpr",
+        "//:tsi",
+        "//test/core/util:gpr_test_util",
+    ],
+)
+
+
+grpc_cc_test(
+    name = "ssl_transport_security_test",
+    srcs = ["ssl_transport_security_test.c"],
+    data = [
+        "//src/core/tsi/test_creds:badclient.key",
+        "//src/core/tsi/test_creds:badclient.pem",
+        "//src/core/tsi/test_creds:badserver.key",
+        "//src/core/tsi/test_creds:badserver.pem",
+        "//src/core/tsi/test_creds:ca.pem",
+        "//src/core/tsi/test_creds:client.key",
+        "//src/core/tsi/test_creds:client.pem",
+        "//src/core/tsi/test_creds:server0.key",
+        "//src/core/tsi/test_creds:server0.pem",
+        "//src/core/tsi/test_creds:server1.key",
+        "//src/core/tsi/test_creds:server1.pem",
+    ],
+    language = "C",
+    deps = [
+        ":transport_security_test_lib",
+        "//:grpc",
+        "//:gpr",
+        "//:tsi",
+        "//test/core/util:gpr_test_util",
     ],
 )
 
@@ -28,8 +73,8 @@ grpc_cc_test(
     srcs = ["transport_security_test.c"],
     language = "C",
     deps = [
-        "//:gpr",
         "//:grpc",
+        "//:gpr",
         "//test/core/util:gpr_test_util",
         "//test/core/util:grpc_test_util",
     ],
diff --git a/test/core/tsi/fake_transport_security_test.c b/test/core/tsi/fake_transport_security_test.c
new file mode 100644
index 0000000000..11be8802b7
--- /dev/null
+++ b/test/core/tsi/fake_transport_security_test.c
@@ -0,0 +1,148 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/tsi/fake_transport_security.h"
+#include "test/core/tsi/transport_security_test_lib.h"
+#include "test/core/util/test_config.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+typedef struct fake_tsi_test_fixture {
+  tsi_test_fixture base;
+} fake_tsi_test_fixture;
+
+static void fake_test_setup_handshakers(tsi_test_fixture *fixture) {
+  fixture->client_handshaker =
+      tsi_create_fake_handshaker(true /* is_client. */);
+  fixture->server_handshaker =
+      tsi_create_fake_handshaker(false /* is_client. */);
+}
+
+static void validate_handshaker_peers(tsi_handshaker_result *result) {
+  GPR_ASSERT(result != NULL);
+  tsi_peer peer;
+  GPR_ASSERT(tsi_handshaker_result_extract_peer(result, &peer) == TSI_OK);
+  const tsi_peer_property *property =
+      tsi_peer_get_property_by_name(&peer, TSI_CERTIFICATE_TYPE_PEER_PROPERTY);
+  GPR_ASSERT(property != NULL);
+  GPR_ASSERT(memcmp(property->value.data, TSI_FAKE_CERTIFICATE_TYPE,
+                    property->value.length) == 0);
+  tsi_peer_destruct(&peer);
+}
+
+static void fake_test_check_handshaker_peers(tsi_test_fixture *fixture) {
+  validate_handshaker_peers(fixture->client_result);
+  validate_handshaker_peers(fixture->server_result);
+}
+
+static void fake_test_destruct(tsi_test_fixture *fixture) {}
+
+static const struct tsi_test_fixture_vtable vtable = {
+    fake_test_setup_handshakers, fake_test_check_handshaker_peers,
+    fake_test_destruct};
+
+static tsi_test_fixture *fake_tsi_test_fixture_create() {
+  fake_tsi_test_fixture *fake_fixture = gpr_zalloc(sizeof(*fake_fixture));
+  tsi_test_fixture_init(&fake_fixture->base);
+  fake_fixture->base.vtable = &vtable;
+  return &fake_fixture->base;
+}
+
+void fake_tsi_test_do_handshake_tiny_handshake_buffer() {
+  tsi_test_fixture *fixture = fake_tsi_test_fixture_create();
+  fixture->handshake_buffer_size = TSI_TEST_TINY_HANDSHAKE_BUFFER_SIZE;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void fake_tsi_test_do_handshake_small_handshake_buffer() {
+  tsi_test_fixture *fixture = fake_tsi_test_fixture_create();
+  fixture->handshake_buffer_size = TSI_TEST_SMALL_HANDSHAKE_BUFFER_SIZE;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void fake_tsi_test_do_handshake() {
+  tsi_test_fixture *fixture = fake_tsi_test_fixture_create();
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void fake_tsi_test_do_round_trip_for_all_configs() {
+  unsigned int *bit_array =
+      gpr_zalloc(sizeof(unsigned int) * TSI_TEST_NUM_OF_ARGUMENTS);
+  const unsigned int mask = 1U << (TSI_TEST_NUM_OF_ARGUMENTS - 1);
+  for (unsigned int val = 0; val < TSI_TEST_NUM_OF_COMBINATIONS; val++) {
+    unsigned int v = val;
+    for (unsigned int ind = 0; ind < TSI_TEST_NUM_OF_ARGUMENTS; ind++) {
+      bit_array[ind] = (v & mask) ? 1 : 0;
+      v <<= 1;
+    }
+    tsi_test_fixture *fixture = fake_tsi_test_fixture_create();
+    fake_tsi_test_fixture *fake_fixture = (fake_tsi_test_fixture *)fixture;
+    tsi_test_frame_protector_config_destroy(fake_fixture->base.config);
+    fake_fixture->base.config = tsi_test_frame_protector_config_create(
+        bit_array[0], bit_array[1], bit_array[2], bit_array[3], bit_array[4],
+        bit_array[5], bit_array[6], bit_array[7]);
+    tsi_test_do_round_trip(&fake_fixture->base);
+    tsi_test_fixture_destroy(fixture);
+  }
+  gpr_free(bit_array);
+}
+
+void fake_tsi_test_do_round_trip_odd_buffer_size() {
+  const size_t odd_sizes[] = {1025, 2051, 4103, 8207, 16409};
+  const size_t size = sizeof(odd_sizes) / sizeof(size_t);
+  for (size_t ind1 = 0; ind1 < size; ind1++) {
+    for (size_t ind2 = 0; ind2 < size; ind2++) {
+      for (size_t ind3 = 0; ind3 < size; ind3++) {
+        for (size_t ind4 = 0; ind4 < size; ind4++) {
+          for (size_t ind5 = 0; ind5 < size; ind5++) {
+            tsi_test_fixture *fixture = fake_tsi_test_fixture_create();
+            fake_tsi_test_fixture *fake_fixture =
+                (fake_tsi_test_fixture *)fixture;
+            tsi_test_frame_protector_config_set_buffer_size(
+                fake_fixture->base.config, odd_sizes[ind1], odd_sizes[ind2],
+                odd_sizes[ind3], odd_sizes[ind4], odd_sizes[ind5]);
+            tsi_test_do_round_trip(&fake_fixture->base);
+            tsi_test_fixture_destroy(fixture);
+          }
+        }
+      }
+    }
+  }
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  fake_tsi_test_do_handshake_tiny_handshake_buffer();
+  fake_tsi_test_do_handshake_small_handshake_buffer();
+  fake_tsi_test_do_handshake();
+  fake_tsi_test_do_round_trip_for_all_configs();
+  fake_tsi_test_do_round_trip_odd_buffer_size();
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/tsi/ssl_transport_security_test.c b/test/core/tsi/ssl_transport_security_test.c
new file mode 100644
index 0000000000..2399b054b1
--- /dev/null
+++ b/test/core/tsi/ssl_transport_security_test.c
@@ -0,0 +1,673 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/lib/iomgr/load_file.h"
+#include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+#include "src/core/tsi/transport_security_adapter.h"
+#include "src/core/tsi/transport_security_interface.h"
+#include "test/core/tsi/transport_security_test_lib.h"
+#include "test/core/util/test_config.h"
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#define SSL_TSI_TEST_ALPN1 "foo"
+#define SSL_TSI_TEST_ALPN2 "toto"
+#define SSL_TSI_TEST_ALPN3 "baz"
+#define SSL_TSI_TEST_ALPN_NUM 2
+#define SSL_TSI_TEST_SERVER_KEY_CERT_PAIRS_NUM 2
+#define SSL_TSI_TEST_BAD_SERVER_KEY_CERT_PAIRS_NUM 1
+#define SSL_TSI_TEST_CREDENTIALS_DIR "src/core/tsi/test_creds/"
+
+typedef enum AlpnMode {
+  NO_ALPN,
+  ALPN_CLIENT_NO_SERVER,
+  ALPN_SERVER_NO_CLIENT,
+  ALPN_CLIENT_SERVER_OK,
+  ALPN_CLIENT_SERVER_MISMATCH
+} AlpnMode;
+
+typedef struct ssl_alpn_lib {
+  AlpnMode alpn_mode;
+  char **server_alpn_protocols;
+  char **client_alpn_protocols;
+  uint16_t num_server_alpn_protocols;
+  uint16_t num_client_alpn_protocols;
+} ssl_alpn_lib;
+
+typedef struct ssl_key_cert_lib {
+  bool use_bad_server_cert;
+  bool use_bad_client_cert;
+  char *root_cert;
+  tsi_ssl_pem_key_cert_pair *server_pem_key_cert_pairs;
+  tsi_ssl_pem_key_cert_pair *bad_server_pem_key_cert_pairs;
+  tsi_ssl_pem_key_cert_pair client_pem_key_cert_pair;
+  tsi_ssl_pem_key_cert_pair bad_client_pem_key_cert_pair;
+  uint16_t server_num_key_cert_pairs;
+  uint16_t bad_server_num_key_cert_pairs;
+} ssl_key_cert_lib;
+
+typedef struct ssl_tsi_test_fixture {
+  tsi_test_fixture base;
+  ssl_key_cert_lib *key_cert_lib;
+  ssl_alpn_lib *alpn_lib;
+  bool force_client_auth;
+  char *server_name_indication;
+  tsi_ssl_server_handshaker_factory *server_handshaker_factory;
+  tsi_ssl_client_handshaker_factory *client_handshaker_factory;
+} ssl_tsi_test_fixture;
+
+static void ssl_test_setup_handshakers(tsi_test_fixture *fixture) {
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  GPR_ASSERT(ssl_fixture != NULL);
+  GPR_ASSERT(ssl_fixture->key_cert_lib != NULL);
+  GPR_ASSERT(ssl_fixture->alpn_lib != NULL);
+  ssl_key_cert_lib *key_cert_lib = ssl_fixture->key_cert_lib;
+  ssl_alpn_lib *alpn_lib = ssl_fixture->alpn_lib;
+  /* Create client handshaker factory. */
+  tsi_ssl_pem_key_cert_pair *client_key_cert_pair = NULL;
+  if (ssl_fixture->force_client_auth) {
+    client_key_cert_pair = key_cert_lib->use_bad_client_cert
+                               ? &key_cert_lib->bad_client_pem_key_cert_pair
+                               : &key_cert_lib->client_pem_key_cert_pair;
+  }
+  char **client_alpn_protocols = NULL;
+  uint16_t num_client_alpn_protocols = 0;
+  if (alpn_lib->alpn_mode == ALPN_CLIENT_NO_SERVER ||
+      alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_OK ||
+      alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_MISMATCH) {
+    client_alpn_protocols = alpn_lib->client_alpn_protocols;
+    num_client_alpn_protocols = alpn_lib->num_client_alpn_protocols;
+  }
+  GPR_ASSERT(tsi_create_ssl_client_handshaker_factory(
+                 client_key_cert_pair, key_cert_lib->root_cert, NULL,
+                 (const char **)client_alpn_protocols,
+                 num_client_alpn_protocols,
+                 &ssl_fixture->client_handshaker_factory) == TSI_OK);
+  /* Create server handshaker factory. */
+  char **server_alpn_protocols = NULL;
+  uint16_t num_server_alpn_protocols = 0;
+  if (alpn_lib->alpn_mode == ALPN_SERVER_NO_CLIENT ||
+      alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_OK ||
+      alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_MISMATCH) {
+    server_alpn_protocols = alpn_lib->server_alpn_protocols;
+    num_server_alpn_protocols = alpn_lib->num_server_alpn_protocols;
+    if (alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_MISMATCH) {
+      num_server_alpn_protocols--;
+    }
+  }
+  GPR_ASSERT(tsi_create_ssl_server_handshaker_factory(
+                 key_cert_lib->use_bad_server_cert
+                     ? key_cert_lib->bad_server_pem_key_cert_pairs
+                     : key_cert_lib->server_pem_key_cert_pairs,
+                 key_cert_lib->use_bad_server_cert
+                     ? key_cert_lib->bad_server_num_key_cert_pairs
+                     : key_cert_lib->server_num_key_cert_pairs,
+                 key_cert_lib->root_cert, ssl_fixture->force_client_auth, NULL,
+                 (const char **)server_alpn_protocols,
+                 num_server_alpn_protocols,
+                 &ssl_fixture->server_handshaker_factory) == TSI_OK);
+  /* Create server and client handshakers. */
+  tsi_handshaker *client_handshaker = NULL;
+  GPR_ASSERT(tsi_ssl_client_handshaker_factory_create_handshaker(
+                 ssl_fixture->client_handshaker_factory,
+                 ssl_fixture->server_name_indication,
+                 &client_handshaker) == TSI_OK);
+  ssl_fixture->base.client_handshaker =
+      tsi_create_adapter_handshaker(client_handshaker);
+  tsi_handshaker *server_handshaker = NULL;
+  GPR_ASSERT(tsi_ssl_server_handshaker_factory_create_handshaker(
+                 ssl_fixture->server_handshaker_factory, &server_handshaker) ==
+             TSI_OK);
+  ssl_fixture->base.server_handshaker =
+      tsi_create_adapter_handshaker(server_handshaker);
+}
+
+static void check_alpn(ssl_tsi_test_fixture *ssl_fixture,
+                       const tsi_peer *peer) {
+  GPR_ASSERT(ssl_fixture != NULL);
+  GPR_ASSERT(ssl_fixture->alpn_lib != NULL);
+  ssl_alpn_lib *alpn_lib = ssl_fixture->alpn_lib;
+  const tsi_peer_property *alpn_property =
+      tsi_peer_get_property_by_name(peer, TSI_SSL_ALPN_SELECTED_PROTOCOL);
+  if (alpn_lib->alpn_mode != ALPN_CLIENT_SERVER_OK) {
+    GPR_ASSERT(alpn_property == NULL);
+  } else {
+    GPR_ASSERT(alpn_property != NULL);
+    const char *expected_match = "baz";
+    GPR_ASSERT(memcmp(alpn_property->value.data, expected_match,
+                      alpn_property->value.length) == 0);
+  }
+}
+
+static const tsi_peer_property *
+check_basic_authenticated_peer_and_get_common_name(const tsi_peer *peer) {
+  const tsi_peer_property *cert_type_property =
+      tsi_peer_get_property_by_name(peer, TSI_CERTIFICATE_TYPE_PEER_PROPERTY);
+  GPR_ASSERT(cert_type_property != NULL);
+  GPR_ASSERT(memcmp(cert_type_property->value.data, TSI_X509_CERTIFICATE_TYPE,
+                    cert_type_property->value.length) == 0);
+  const tsi_peer_property *property = tsi_peer_get_property_by_name(
+      peer, TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY);
+  GPR_ASSERT(property != NULL);
+  return property;
+}
+
+void check_server0_peer(tsi_peer *peer) {
+  const tsi_peer_property *property =
+      check_basic_authenticated_peer_and_get_common_name(peer);
+  const char *expected_match = "*.test.google.com.au";
+  GPR_ASSERT(memcmp(property->value.data, expected_match,
+                    property->value.length) == 0);
+  GPR_ASSERT(tsi_peer_get_property_by_name(
+                 peer, TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY) ==
+             NULL);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "foo.test.google.com.au") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "bar.test.google.com.au") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "bar.test.google.blah") == 0);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "foo.bar.test.google.com.au") ==
+             0);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "test.google.com.au") == 0);
+  tsi_peer_destruct(peer);
+}
+
+static bool check_subject_alt_name(tsi_peer *peer, const char *name) {
+  for (size_t i = 0; i < peer->property_count; i++) {
+    const tsi_peer_property *prop = &peer->properties[i];
+    if (strcmp(prop->name, TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY) ==
+        0) {
+      if (memcmp(prop->value.data, name, prop->value.length) == 0) {
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+void check_server1_peer(tsi_peer *peer) {
+  const tsi_peer_property *property =
+      check_basic_authenticated_peer_and_get_common_name(peer);
+  const char *expected_match = "*.test.google.com";
+  GPR_ASSERT(memcmp(property->value.data, expected_match,
+                    property->value.length) == 0);
+  GPR_ASSERT(check_subject_alt_name(peer, "*.test.google.fr") == 1);
+  GPR_ASSERT(check_subject_alt_name(peer, "waterzooi.test.google.be") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "foo.test.google.fr") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "bar.test.google.fr") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "waterzooi.test.google.be") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "foo.test.youtube.com") == 1);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "bar.foo.test.google.com") == 0);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "test.google.fr") == 0);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "tartines.test.google.be") == 0);
+  GPR_ASSERT(tsi_ssl_peer_matches_name(peer, "tartines.youtube.com") == 0);
+  tsi_peer_destruct(peer);
+}
+
+static void check_client_peer(ssl_tsi_test_fixture *ssl_fixture,
+                              tsi_peer *peer) {
+  GPR_ASSERT(ssl_fixture != NULL);
+  GPR_ASSERT(ssl_fixture->alpn_lib != NULL);
+  ssl_alpn_lib *alpn_lib = ssl_fixture->alpn_lib;
+  if (!ssl_fixture->force_client_auth) {
+    GPR_ASSERT(peer->property_count ==
+               (alpn_lib->alpn_mode == ALPN_CLIENT_SERVER_OK ? 1 : 0));
+  } else {
+    const tsi_peer_property *property =
+        check_basic_authenticated_peer_and_get_common_name(peer);
+    const char *expected_match = "testclient";
+    GPR_ASSERT(memcmp(property->value.data, expected_match,
+                      property->value.length) == 0);
+  }
+  tsi_peer_destruct(peer);
+}
+
+static void ssl_test_check_handshaker_peers(tsi_test_fixture *fixture) {
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  GPR_ASSERT(ssl_fixture != NULL);
+  GPR_ASSERT(ssl_fixture->key_cert_lib != NULL);
+  ssl_key_cert_lib *key_cert_lib = ssl_fixture->key_cert_lib;
+  tsi_peer peer;
+  bool expect_success =
+      !(key_cert_lib->use_bad_server_cert ||
+        (key_cert_lib->use_bad_client_cert && ssl_fixture->force_client_auth));
+  if (expect_success) {
+    GPR_ASSERT(tsi_handshaker_result_extract_peer(
+                   ssl_fixture->base.client_result, &peer) == TSI_OK);
+    check_alpn(ssl_fixture, &peer);
+
+    if (ssl_fixture->server_name_indication != NULL) {
+      check_server1_peer(&peer);
+    } else {
+      check_server0_peer(&peer);
+    }
+  } else {
+    GPR_ASSERT(ssl_fixture->base.client_result == NULL);
+  }
+  if (expect_success) {
+    GPR_ASSERT(tsi_handshaker_result_extract_peer(
+                   ssl_fixture->base.server_result, &peer) == TSI_OK);
+    check_alpn(ssl_fixture, &peer);
+    check_client_peer(ssl_fixture, &peer);
+  } else {
+    GPR_ASSERT(ssl_fixture->base.server_result == NULL);
+  }
+}
+
+static void ssl_test_pem_key_cert_pair_destroy(tsi_ssl_pem_key_cert_pair kp) {
+  gpr_free((void *)kp.private_key);
+  gpr_free((void *)kp.cert_chain);
+}
+
+static void ssl_test_destruct(tsi_test_fixture *fixture) {
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  if (ssl_fixture == NULL) {
+    return;
+  }
+  /* Destroy ssl_alpn_lib. */
+  ssl_alpn_lib *alpn_lib = ssl_fixture->alpn_lib;
+  for (size_t i = 0; i < alpn_lib->num_server_alpn_protocols; i++) {
+    gpr_free(alpn_lib->server_alpn_protocols[i]);
+  }
+  gpr_free(alpn_lib->server_alpn_protocols);
+  for (size_t i = 0; i < alpn_lib->num_client_alpn_protocols; i++) {
+    gpr_free(alpn_lib->client_alpn_protocols[i]);
+  }
+  gpr_free(alpn_lib->client_alpn_protocols);
+  gpr_free(alpn_lib);
+  /* Destroy ssl_key_cert_lib. */
+  ssl_key_cert_lib *key_cert_lib = ssl_fixture->key_cert_lib;
+  for (size_t i = 0; i < key_cert_lib->server_num_key_cert_pairs; i++) {
+    ssl_test_pem_key_cert_pair_destroy(
+        key_cert_lib->server_pem_key_cert_pairs[i]);
+  }
+  gpr_free(key_cert_lib->server_pem_key_cert_pairs);
+  for (size_t i = 0; i < key_cert_lib->bad_server_num_key_cert_pairs; i++) {
+    ssl_test_pem_key_cert_pair_destroy(
+        key_cert_lib->bad_server_pem_key_cert_pairs[i]);
+  }
+  gpr_free(key_cert_lib->bad_server_pem_key_cert_pairs);
+  ssl_test_pem_key_cert_pair_destroy(key_cert_lib->client_pem_key_cert_pair);
+  ssl_test_pem_key_cert_pair_destroy(
+      key_cert_lib->bad_client_pem_key_cert_pair);
+  gpr_free(key_cert_lib->root_cert);
+  gpr_free(key_cert_lib);
+  /* Unreference others. */
+  tsi_ssl_server_handshaker_factory_unref(
+      ssl_fixture->server_handshaker_factory);
+  tsi_ssl_client_handshaker_factory_unref(
+      ssl_fixture->client_handshaker_factory);
+}
+
+static const struct tsi_test_fixture_vtable vtable = {
+    ssl_test_setup_handshakers, ssl_test_check_handshaker_peers,
+    ssl_test_destruct};
+
+static char *load_file(const char *dir_path, const char *file_name) {
+  char *file_path =
+      gpr_zalloc(sizeof(char) * (strlen(dir_path) + strlen(file_name) + 1));
+  memcpy(file_path, dir_path, strlen(dir_path));
+  memcpy(file_path + strlen(dir_path), file_name, strlen(file_name));
+  grpc_slice slice;
+  GPR_ASSERT(grpc_load_file(file_path, 1, &slice) == GRPC_ERROR_NONE);
+  char *data = grpc_slice_to_c_string(slice);
+  grpc_slice_unref(slice);
+  gpr_free(file_path);
+  return data;
+}
+
+static tsi_test_fixture *ssl_tsi_test_fixture_create() {
+  ssl_tsi_test_fixture *ssl_fixture = gpr_zalloc(sizeof(*ssl_fixture));
+  tsi_test_fixture_init(&ssl_fixture->base);
+  ssl_fixture->base.test_unused_bytes = false;
+  ssl_fixture->base.vtable = &vtable;
+  /* Create ssl_key_cert_lib. */
+  ssl_key_cert_lib *key_cert_lib = gpr_zalloc(sizeof(*key_cert_lib));
+  key_cert_lib->use_bad_server_cert = false;
+  key_cert_lib->use_bad_client_cert = false;
+  key_cert_lib->server_num_key_cert_pairs =
+      SSL_TSI_TEST_SERVER_KEY_CERT_PAIRS_NUM;
+  key_cert_lib->bad_server_num_key_cert_pairs =
+      SSL_TSI_TEST_BAD_SERVER_KEY_CERT_PAIRS_NUM;
+  key_cert_lib->server_pem_key_cert_pairs =
+      gpr_malloc(sizeof(tsi_ssl_pem_key_cert_pair) *
+                 key_cert_lib->server_num_key_cert_pairs);
+  key_cert_lib->bad_server_pem_key_cert_pairs =
+      gpr_malloc(sizeof(tsi_ssl_pem_key_cert_pair) *
+                 key_cert_lib->bad_server_num_key_cert_pairs);
+  key_cert_lib->server_pem_key_cert_pairs[0].private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server0.key");
+  key_cert_lib->server_pem_key_cert_pairs[0].cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server0.pem");
+  key_cert_lib->server_pem_key_cert_pairs[1].private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server1.key");
+  key_cert_lib->server_pem_key_cert_pairs[1].cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server1.pem");
+  key_cert_lib->bad_server_pem_key_cert_pairs[0].private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "badserver.key");
+  key_cert_lib->bad_server_pem_key_cert_pairs[0].cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "badserver.pem");
+  key_cert_lib->client_pem_key_cert_pair.private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "client.key");
+  key_cert_lib->client_pem_key_cert_pair.cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "client.pem");
+  key_cert_lib->bad_client_pem_key_cert_pair.private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "badclient.key");
+  key_cert_lib->bad_client_pem_key_cert_pair.cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "badclient.pem");
+  key_cert_lib->root_cert = load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "ca.pem");
+  ssl_fixture->key_cert_lib = key_cert_lib;
+  /* Create ssl_alpn_lib. */
+  ssl_alpn_lib *alpn_lib = gpr_zalloc(sizeof(*alpn_lib));
+  alpn_lib->server_alpn_protocols =
+      gpr_zalloc(sizeof(char *) * SSL_TSI_TEST_ALPN_NUM);
+  alpn_lib->client_alpn_protocols =
+      gpr_zalloc(sizeof(char *) * SSL_TSI_TEST_ALPN_NUM);
+  alpn_lib->server_alpn_protocols[0] = gpr_strdup(SSL_TSI_TEST_ALPN1);
+  alpn_lib->server_alpn_protocols[1] = gpr_strdup(SSL_TSI_TEST_ALPN3);
+  alpn_lib->client_alpn_protocols[0] = gpr_strdup(SSL_TSI_TEST_ALPN2);
+  alpn_lib->client_alpn_protocols[1] = gpr_strdup(SSL_TSI_TEST_ALPN3);
+  alpn_lib->num_server_alpn_protocols = SSL_TSI_TEST_ALPN_NUM;
+  alpn_lib->num_client_alpn_protocols = SSL_TSI_TEST_ALPN_NUM;
+  alpn_lib->alpn_mode = NO_ALPN;
+  ssl_fixture->alpn_lib = alpn_lib;
+  ssl_fixture->base.vtable = &vtable;
+  ssl_fixture->server_name_indication = NULL;
+  ssl_fixture->force_client_auth = false;
+  return &ssl_fixture->base;
+}
+
+void ssl_tsi_test_do_handshake_tiny_handshake_buffer() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  fixture->handshake_buffer_size = TSI_TEST_TINY_HANDSHAKE_BUFFER_SIZE;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_small_handshake_buffer() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  fixture->handshake_buffer_size = TSI_TEST_SMALL_HANDSHAKE_BUFFER_SIZE;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_with_client_authentication() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->force_client_auth = true;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_with_server_name_indication_exact_domain() {
+  /* server1 cert contains "waterzooi.test.google.be" in SAN. */
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->server_name_indication = "waterzooi.test.google.be";
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_with_server_name_indication_wild_star_domain() {
+  /* server1 cert contains "*.test.google.fr" in SAN. */
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->server_name_indication = "juju.test.google.fr";
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_with_bad_server_cert() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->key_cert_lib->use_bad_server_cert = true;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_with_bad_client_cert() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->key_cert_lib->use_bad_client_cert = true;
+  ssl_fixture->force_client_auth = true;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_alpn_client_no_server() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->alpn_lib->alpn_mode = ALPN_CLIENT_NO_SERVER;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_alpn_server_no_client() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->alpn_lib->alpn_mode = ALPN_SERVER_NO_CLIENT;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_alpn_client_server_mismatch() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->alpn_lib->alpn_mode = ALPN_CLIENT_SERVER_MISMATCH;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_handshake_alpn_client_server_ok() {
+  tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+  ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+  ssl_fixture->alpn_lib->alpn_mode = ALPN_CLIENT_SERVER_OK;
+  tsi_test_do_handshake(fixture);
+  tsi_test_fixture_destroy(fixture);
+}
+
+void ssl_tsi_test_do_round_trip_for_all_configs() {
+  unsigned int *bit_array =
+      gpr_zalloc(sizeof(unsigned int) * TSI_TEST_NUM_OF_ARGUMENTS);
+  const unsigned int mask = 1U << (TSI_TEST_NUM_OF_ARGUMENTS - 1);
+  for (unsigned int val = 0; val < TSI_TEST_NUM_OF_COMBINATIONS; val++) {
+    unsigned int v = val;
+    for (unsigned int ind = 0; ind < TSI_TEST_NUM_OF_ARGUMENTS; ind++) {
+      bit_array[ind] = (v & mask) ? 1 : 0;
+      v <<= 1;
+    }
+    tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+    ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+    tsi_test_frame_protector_config_destroy(ssl_fixture->base.config);
+    ssl_fixture->base.config = tsi_test_frame_protector_config_create(
+        bit_array[0], bit_array[1], bit_array[2], bit_array[3], bit_array[4],
+        bit_array[5], bit_array[6], bit_array[7]);
+    tsi_test_do_round_trip(&ssl_fixture->base);
+    tsi_test_fixture_destroy(fixture);
+  }
+  gpr_free(bit_array);
+}
+
+void ssl_tsi_test_do_round_trip_odd_buffer_size() {
+  const size_t odd_sizes[] = {1025, 2051, 4103, 8207, 16409};
+  const size_t size = sizeof(odd_sizes) / sizeof(size_t);
+  for (size_t ind1 = 0; ind1 < size; ind1++) {
+    for (size_t ind2 = 0; ind2 < size; ind2++) {
+      for (size_t ind3 = 0; ind3 < size; ind3++) {
+        for (size_t ind4 = 0; ind4 < size; ind4++) {
+          for (size_t ind5 = 0; ind5 < size; ind5++) {
+            tsi_test_fixture *fixture = ssl_tsi_test_fixture_create();
+            ssl_tsi_test_fixture *ssl_fixture = (ssl_tsi_test_fixture *)fixture;
+            tsi_test_frame_protector_config_set_buffer_size(
+                ssl_fixture->base.config, odd_sizes[ind1], odd_sizes[ind2],
+                odd_sizes[ind3], odd_sizes[ind4], odd_sizes[ind5]);
+            tsi_test_do_round_trip(&ssl_fixture->base);
+            tsi_test_fixture_destroy(fixture);
+          }
+        }
+      }
+    }
+  }
+}
+
+static const tsi_ssl_handshaker_factory_vtable *original_vtable;
+static bool handshaker_factory_destructor_called;
+
+static void ssl_tsi_test_handshaker_factory_destructor(
+    tsi_ssl_handshaker_factory *factory) {
+  GPR_ASSERT(factory != NULL);
+  handshaker_factory_destructor_called = true;
+  if (original_vtable != NULL && original_vtable->destroy != NULL) {
+    original_vtable->destroy(factory);
+  }
+}
+
+static tsi_ssl_handshaker_factory_vtable test_handshaker_factory_vtable = {
+    ssl_tsi_test_handshaker_factory_destructor};
+
+void test_tsi_ssl_client_handshaker_factory_refcounting() {
+  int i;
+  const char *cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "client.pem");
+
+  tsi_ssl_client_handshaker_factory *client_handshaker_factory;
+  GPR_ASSERT(tsi_create_ssl_client_handshaker_factory(
+                 NULL, cert_chain, NULL, NULL, 0, &client_handshaker_factory) ==
+             TSI_OK);
+
+  handshaker_factory_destructor_called = false;
+  original_vtable = tsi_ssl_handshaker_factory_swap_vtable(
+      (tsi_ssl_handshaker_factory *)client_handshaker_factory,
+      &test_handshaker_factory_vtable);
+
+  tsi_handshaker *handshaker[3];
+
+  for (i = 0; i < 3; ++i) {
+    GPR_ASSERT(tsi_ssl_client_handshaker_factory_create_handshaker(
+                   client_handshaker_factory, "google.com", &handshaker[i]) ==
+               TSI_OK);
+  }
+
+  tsi_handshaker_destroy(handshaker[1]);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_handshaker_destroy(handshaker[0]);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_ssl_client_handshaker_factory_unref(client_handshaker_factory);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_handshaker_destroy(handshaker[2]);
+  GPR_ASSERT(handshaker_factory_destructor_called);
+
+  gpr_free((void *)cert_chain);
+}
+
+void test_tsi_ssl_server_handshaker_factory_refcounting() {
+  int i;
+  tsi_ssl_server_handshaker_factory *server_handshaker_factory;
+  tsi_handshaker *handshaker[3];
+  const char *cert_chain =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server0.pem");
+  tsi_ssl_pem_key_cert_pair cert_pair;
+
+  cert_pair.cert_chain = cert_chain;
+  cert_pair.private_key =
+      load_file(SSL_TSI_TEST_CREDENTIALS_DIR, "server0.key");
+
+  GPR_ASSERT(tsi_create_ssl_server_handshaker_factory(
+                 &cert_pair, 1, cert_chain, 0, NULL, NULL, 0,
+                 &server_handshaker_factory) == TSI_OK);
+
+  handshaker_factory_destructor_called = false;
+  original_vtable = tsi_ssl_handshaker_factory_swap_vtable(
+      (tsi_ssl_handshaker_factory *)server_handshaker_factory,
+      &test_handshaker_factory_vtable);
+
+  for (i = 0; i < 3; ++i) {
+    GPR_ASSERT(tsi_ssl_server_handshaker_factory_create_handshaker(
+                   server_handshaker_factory, &handshaker[i]) == TSI_OK);
+  }
+
+  tsi_handshaker_destroy(handshaker[1]);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_handshaker_destroy(handshaker[0]);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_ssl_server_handshaker_factory_unref(server_handshaker_factory);
+  GPR_ASSERT(!handshaker_factory_destructor_called);
+
+  tsi_handshaker_destroy(handshaker[2]);
+  GPR_ASSERT(handshaker_factory_destructor_called);
+
+  ssl_test_pem_key_cert_pair_destroy(cert_pair);
+}
+
+/* Attempting to create a handshaker factory with invalid parameters should fail
+ * but not crash. */
+void test_tsi_ssl_client_handshaker_factory_bad_params() {
+  const char *cert_chain = "This is not a valid PEM file.";
+
+  tsi_ssl_client_handshaker_factory *client_handshaker_factory;
+  GPR_ASSERT(tsi_create_ssl_client_handshaker_factory(
+                 NULL, cert_chain, NULL, NULL, 0, &client_handshaker_factory) ==
+             TSI_INVALID_ARGUMENT);
+  tsi_ssl_client_handshaker_factory_unref(client_handshaker_factory);
+}
+
+void ssl_tsi_test_handshaker_factory_internals() {
+  test_tsi_ssl_client_handshaker_factory_refcounting();
+  test_tsi_ssl_server_handshaker_factory_refcounting();
+  test_tsi_ssl_client_handshaker_factory_bad_params();
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  ssl_tsi_test_do_handshake_tiny_handshake_buffer();
+  ssl_tsi_test_do_handshake_small_handshake_buffer();
+  ssl_tsi_test_do_handshake();
+  ssl_tsi_test_do_handshake_with_client_authentication();
+  ssl_tsi_test_do_handshake_with_server_name_indication_exact_domain();
+  ssl_tsi_test_do_handshake_with_server_name_indication_wild_star_domain();
+  ssl_tsi_test_do_handshake_with_bad_server_cert();
+  ssl_tsi_test_do_handshake_with_bad_client_cert();
+  ssl_tsi_test_do_handshake_alpn_client_no_server();
+  ssl_tsi_test_do_handshake_alpn_server_no_client();
+  ssl_tsi_test_do_handshake_alpn_client_server_mismatch();
+  ssl_tsi_test_do_handshake_alpn_client_server_ok();
+  ssl_tsi_test_do_round_trip_for_all_configs();
+  ssl_tsi_test_do_round_trip_odd_buffer_size();
+  ssl_tsi_test_handshaker_factory_internals();
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/tsi/transport_security_test_lib.c b/test/core/tsi/transport_security_test_lib.c
new file mode 100644
index 0000000000..7d66e110f2
--- /dev/null
+++ b/test/core/tsi/transport_security_test_lib.c
@@ -0,0 +1,550 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/lib/security/transport/tsi_error.h"
+#include "test/core/tsi/transport_security_test_lib.h"
+
+typedef struct handshaker_args {
+  tsi_test_fixture *fixture;
+  unsigned char *handshake_buffer;
+  size_t handshake_buffer_size;
+  bool is_client;
+  bool transferred_data;
+  bool appended_unused_bytes;
+  grpc_error *error;
+} handshaker_args;
+
+static handshaker_args *handshaker_args_create(tsi_test_fixture *fixture,
+                                               bool is_client) {
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(fixture->config != NULL);
+  handshaker_args *args = gpr_zalloc(sizeof(*args));
+  args->fixture = fixture;
+  args->handshake_buffer_size = fixture->handshake_buffer_size;
+  args->handshake_buffer = gpr_zalloc(args->handshake_buffer_size);
+  args->is_client = is_client;
+  args->error = GRPC_ERROR_NONE;
+  return args;
+}
+
+static void handshaker_args_destroy(handshaker_args *args) {
+  gpr_free(args->handshake_buffer);
+  GRPC_ERROR_UNREF(args->error);
+  gpr_free(args);
+}
+
+static void do_handshaker_next(handshaker_args *args);
+
+static void setup_handshakers(tsi_test_fixture *fixture) {
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(fixture->vtable != NULL);
+  GPR_ASSERT(fixture->vtable->setup_handshakers != NULL);
+  fixture->vtable->setup_handshakers(fixture);
+}
+
+static void check_unused_bytes(tsi_test_fixture *fixture) {
+  tsi_handshaker_result *result_with_unused_bytes =
+      fixture->has_client_finished_first ? fixture->server_result
+                                         : fixture->client_result;
+  tsi_handshaker_result *result_without_unused_bytes =
+      fixture->has_client_finished_first ? fixture->client_result
+                                         : fixture->server_result;
+  const unsigned char *bytes = NULL;
+  size_t bytes_size = 0;
+  GPR_ASSERT(tsi_handshaker_result_get_unused_bytes(
+                 result_with_unused_bytes, &bytes, &bytes_size) == TSI_OK);
+  GPR_ASSERT(bytes_size == strlen(TSI_TEST_UNUSED_BYTES));
+  GPR_ASSERT(memcmp(bytes, TSI_TEST_UNUSED_BYTES, bytes_size) == 0);
+  GPR_ASSERT(tsi_handshaker_result_get_unused_bytes(
+                 result_without_unused_bytes, &bytes, &bytes_size) == TSI_OK);
+  GPR_ASSERT(bytes_size == 0);
+  GPR_ASSERT(bytes == NULL);
+}
+
+static void check_handshake_results(tsi_test_fixture *fixture) {
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(fixture->vtable != NULL);
+  GPR_ASSERT(fixture->vtable->check_handshaker_peers != NULL);
+  /* Check handshaker peers. */
+  fixture->vtable->check_handshaker_peers(fixture);
+  /* Check unused bytes. */
+  if (fixture->test_unused_bytes) {
+    if (fixture->server_result != NULL && fixture->client_result != NULL) {
+      check_unused_bytes(fixture);
+    }
+    fixture->bytes_written_to_server_channel = 0;
+    fixture->bytes_written_to_client_channel = 0;
+    fixture->bytes_read_from_client_channel = 0;
+    fixture->bytes_read_from_server_channel = 0;
+  }
+}
+
+static void send_bytes_to_peer(tsi_test_fixture *fixture,
+                               const unsigned char *buf, size_t buf_size,
+                               bool is_client) {
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(buf != NULL);
+  uint8_t *channel =
+      is_client ? fixture->server_channel : fixture->client_channel;
+  GPR_ASSERT(channel != NULL);
+  size_t *bytes_written = is_client ? &fixture->bytes_written_to_server_channel
+                                    : &fixture->bytes_written_to_client_channel;
+  GPR_ASSERT(bytes_written != NULL);
+  GPR_ASSERT(*bytes_written + buf_size <= TSI_TEST_DEFAULT_CHANNEL_SIZE);
+  /* Write data to channel. */
+  memcpy(channel + *bytes_written, buf, buf_size);
+  *bytes_written += buf_size;
+}
+
+static void maybe_append_unused_bytes(handshaker_args *args) {
+  GPR_ASSERT(args != NULL);
+  GPR_ASSERT(args->fixture != NULL);
+  tsi_test_fixture *fixture = args->fixture;
+  if (fixture->test_unused_bytes && !args->appended_unused_bytes) {
+    args->appended_unused_bytes = true;
+    send_bytes_to_peer(fixture, (const unsigned char *)TSI_TEST_UNUSED_BYTES,
+                       strlen(TSI_TEST_UNUSED_BYTES), args->is_client);
+    if (fixture->client_result != NULL && fixture->server_result == NULL) {
+      fixture->has_client_finished_first = true;
+    }
+  }
+}
+
+static void receive_bytes_from_peer(tsi_test_fixture *fixture,
+                                    unsigned char **buf, size_t *buf_size,
+                                    bool is_client) {
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(*buf != NULL);
+  GPR_ASSERT(buf_size != NULL);
+  uint8_t *channel =
+      is_client ? fixture->client_channel : fixture->server_channel;
+  GPR_ASSERT(channel != NULL);
+  size_t *bytes_read = is_client ? &fixture->bytes_read_from_client_channel
+                                 : &fixture->bytes_read_from_server_channel;
+  size_t *bytes_written = is_client ? &fixture->bytes_written_to_client_channel
+                                    : &fixture->bytes_written_to_server_channel;
+  GPR_ASSERT(bytes_read != NULL);
+  GPR_ASSERT(bytes_written != NULL);
+  size_t to_read = *buf_size < *bytes_written - *bytes_read
+                       ? *buf_size
+                       : *bytes_written - *bytes_read;
+  /* Read data from channel. */
+  memcpy(*buf, channel + *bytes_read, to_read);
+  *buf_size = to_read;
+  *bytes_read += to_read;
+}
+
+static void send_message_to_peer(tsi_test_fixture *fixture,
+                                 tsi_frame_protector *protector,
+                                 bool is_client) {
+  /* Initialization. */
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(fixture->config != NULL);
+  GPR_ASSERT(protector != NULL);
+  tsi_test_frame_protector_config *config = fixture->config;
+  unsigned char *protected_buffer = gpr_zalloc(config->protected_buffer_size);
+  size_t message_size =
+      is_client ? config->client_message_size : config->server_message_size;
+  uint8_t *message =
+      is_client ? config->client_message : config->server_message;
+  GPR_ASSERT(message != NULL);
+  const unsigned char *message_bytes = (const unsigned char *)message;
+  tsi_result result = TSI_OK;
+  /* Do protect and send protected data to peer. */
+  while (message_size > 0 && result == TSI_OK) {
+    size_t protected_buffer_size_to_send = config->protected_buffer_size;
+    size_t processed_message_size = message_size;
+    /* Do protect. */
+    result = tsi_frame_protector_protect(
+        protector, message_bytes, &processed_message_size, protected_buffer,
+        &protected_buffer_size_to_send);
+    GPR_ASSERT(result == TSI_OK);
+    /* Send protected data to peer. */
+    send_bytes_to_peer(fixture, protected_buffer, protected_buffer_size_to_send,
+                       is_client);
+    message_bytes += processed_message_size;
+    message_size -= processed_message_size;
+    /* Flush if we're done. */
+    if (message_size == 0) {
+      size_t still_pending_size;
+      do {
+        protected_buffer_size_to_send = config->protected_buffer_size;
+        result = tsi_frame_protector_protect_flush(
+            protector, protected_buffer, &protected_buffer_size_to_send,
+            &still_pending_size);
+        GPR_ASSERT(result == TSI_OK);
+        send_bytes_to_peer(fixture, protected_buffer,
+                           protected_buffer_size_to_send, is_client);
+      } while (still_pending_size > 0 && result == TSI_OK);
+      GPR_ASSERT(result == TSI_OK);
+    }
+  }
+  GPR_ASSERT(result == TSI_OK);
+  gpr_free(protected_buffer);
+}
+
+static void receive_message_from_peer(tsi_test_fixture *fixture,
+                                      tsi_frame_protector *protector,
+                                      unsigned char *message,
+                                      size_t *bytes_received, bool is_client) {
+  /* Initialization. */
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(protector != NULL);
+  GPR_ASSERT(message != NULL);
+  GPR_ASSERT(bytes_received != NULL);
+  GPR_ASSERT(fixture->config != NULL);
+  tsi_test_frame_protector_config *config = fixture->config;
+  size_t read_offset = 0;
+  size_t message_offset = 0;
+  size_t read_from_peer_size = 0;
+  tsi_result result = TSI_OK;
+  bool done = false;
+  unsigned char *read_buffer = gpr_zalloc(config->read_buffer_allocated_size);
+  unsigned char *message_buffer =
+      gpr_zalloc(config->message_buffer_allocated_size);
+  /* Do unprotect on data received from peer. */
+  while (!done && result == TSI_OK) {
+    /* Receive data from peer. */
+    if (read_from_peer_size == 0) {
+      read_from_peer_size = config->read_buffer_allocated_size;
+      receive_bytes_from_peer(fixture, &read_buffer, &read_from_peer_size,
+                              is_client);
+      read_offset = 0;
+    }
+    if (read_from_peer_size == 0) {
+      done = true;
+    }
+    /* Do unprotect. */
+    size_t message_buffer_size;
+    do {
+      message_buffer_size = config->message_buffer_allocated_size;
+      size_t processed_size = read_from_peer_size;
+      result = tsi_frame_protector_unprotect(
+          protector, read_buffer + read_offset, &processed_size, message_buffer,
+          &message_buffer_size);
+      GPR_ASSERT(result == TSI_OK);
+      if (message_buffer_size > 0) {
+        memcpy(message + message_offset, message_buffer, message_buffer_size);
+        message_offset += message_buffer_size;
+      }
+      read_offset += processed_size;
+      read_from_peer_size -= processed_size;
+    } while ((read_from_peer_size > 0 || message_buffer_size > 0) &&
+             result == TSI_OK);
+    GPR_ASSERT(result == TSI_OK);
+  }
+  GPR_ASSERT(result == TSI_OK);
+  *bytes_received = message_offset;
+  gpr_free(read_buffer);
+  gpr_free(message_buffer);
+}
+
+grpc_error *on_handshake_next_done(tsi_result result, void *user_data,
+                                   const unsigned char *bytes_to_send,
+                                   size_t bytes_to_send_size,
+                                   tsi_handshaker_result *handshaker_result) {
+  handshaker_args *args = (handshaker_args *)user_data;
+  GPR_ASSERT(args != NULL);
+  GPR_ASSERT(args->fixture != NULL);
+  tsi_test_fixture *fixture = args->fixture;
+  grpc_error *error = GRPC_ERROR_NONE;
+  /* Read more data if we need to. */
+  if (result == TSI_INCOMPLETE_DATA) {
+    GPR_ASSERT(bytes_to_send_size == 0);
+    return error;
+  }
+  if (result != TSI_OK) {
+    return grpc_set_tsi_error_result(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Handshake failed"), result);
+  }
+  /* Update handshaker result. */
+  if (handshaker_result != NULL) {
+    tsi_handshaker_result **result_to_write =
+        args->is_client ? &fixture->client_result : &fixture->server_result;
+    GPR_ASSERT(*result_to_write == NULL);
+    *result_to_write = handshaker_result;
+  }
+  /* Send data to peer, if needed. */
+  if (bytes_to_send_size > 0) {
+    send_bytes_to_peer(args->fixture, bytes_to_send, bytes_to_send_size,
+                       args->is_client);
+    args->transferred_data = true;
+  }
+  if (handshaker_result != NULL) {
+    maybe_append_unused_bytes(args);
+  }
+  return error;
+}
+
+static void on_handshake_next_done_wrapper(
+    tsi_result result, void *user_data, const unsigned char *bytes_to_send,
+    size_t bytes_to_send_size, tsi_handshaker_result *handshaker_result) {
+  handshaker_args *args = (handshaker_args *)user_data;
+  args->error = on_handshake_next_done(result, user_data, bytes_to_send,
+                                       bytes_to_send_size, handshaker_result);
+}
+
+static bool is_handshake_finished_properly(handshaker_args *args) {
+  GPR_ASSERT(args != NULL);
+  GPR_ASSERT(args->fixture != NULL);
+  tsi_test_fixture *fixture = args->fixture;
+  if ((args->is_client && fixture->client_result != NULL) ||
+      (!args->is_client && fixture->server_result != NULL)) {
+    return true;
+  }
+  return false;
+}
+
+static void do_handshaker_next(handshaker_args *args) {
+  /* Initialization. */
+  GPR_ASSERT(args != NULL);
+  GPR_ASSERT(args->fixture != NULL);
+  tsi_test_fixture *fixture = args->fixture;
+  tsi_handshaker *handshaker =
+      args->is_client ? fixture->client_handshaker : fixture->server_handshaker;
+  if (is_handshake_finished_properly(args)) {
+    return;
+  }
+  tsi_handshaker_result *handshaker_result = NULL;
+  unsigned char *bytes_to_send = NULL;
+  size_t bytes_to_send_size = 0;
+  /* Receive data from peer, if available. */
+  size_t buf_size = args->handshake_buffer_size;
+  receive_bytes_from_peer(args->fixture, &args->handshake_buffer, &buf_size,
+                          args->is_client);
+  if (buf_size > 0) {
+    args->transferred_data = true;
+  }
+  /* Peform handshaker next. */
+  tsi_result result = tsi_handshaker_next(
+      handshaker, args->handshake_buffer, buf_size,
+      (const unsigned char **)&bytes_to_send, &bytes_to_send_size,
+      &handshaker_result, &on_handshake_next_done_wrapper, args);
+  if (result != TSI_ASYNC) {
+    args->error = on_handshake_next_done(result, args, bytes_to_send,
+                                         bytes_to_send_size, handshaker_result);
+  }
+}
+
+void tsi_test_do_handshake(tsi_test_fixture *fixture) {
+  /* Initializaiton. */
+  setup_handshakers(fixture);
+  handshaker_args *client_args =
+      handshaker_args_create(fixture, true /* is_client */);
+  handshaker_args *server_args =
+      handshaker_args_create(fixture, false /* is_client */);
+  /* Do handshake. */
+  do {
+    client_args->transferred_data = false;
+    server_args->transferred_data = false;
+    do_handshaker_next(client_args);
+    if (client_args->error != GRPC_ERROR_NONE) {
+      break;
+    }
+    do_handshaker_next(server_args);
+    if (server_args->error != GRPC_ERROR_NONE) {
+      break;
+    }
+    GPR_ASSERT(client_args->transferred_data || server_args->transferred_data);
+  } while (fixture->client_result == NULL || fixture->server_result == NULL);
+  /* Verify handshake results. */
+  check_handshake_results(fixture);
+  /* Cleanup. */
+  handshaker_args_destroy(client_args);
+  handshaker_args_destroy(server_args);
+}
+
+void tsi_test_do_round_trip(tsi_test_fixture *fixture) {
+  /* Initialization. */
+  GPR_ASSERT(fixture != NULL);
+  GPR_ASSERT(fixture->config != NULL);
+  tsi_test_frame_protector_config *config = fixture->config;
+  tsi_frame_protector *client_frame_protector = NULL;
+  tsi_frame_protector *server_frame_protector = NULL;
+  /* Perform handshake. */
+  tsi_test_do_handshake(fixture);
+  /* Create frame protectors.*/
+  size_t client_max_output_protected_frame_size =
+      config->client_max_output_protected_frame_size;
+  GPR_ASSERT(tsi_handshaker_result_create_frame_protector(
+                 fixture->client_result,
+                 client_max_output_protected_frame_size == 0
+                     ? NULL
+                     : &client_max_output_protected_frame_size,
+                 &client_frame_protector) == TSI_OK);
+  size_t server_max_output_protected_frame_size =
+      config->server_max_output_protected_frame_size;
+  GPR_ASSERT(tsi_handshaker_result_create_frame_protector(
+                 fixture->server_result,
+                 server_max_output_protected_frame_size == 0
+                     ? NULL
+                     : &server_max_output_protected_frame_size,
+                 &server_frame_protector) == TSI_OK);
+  /* Client sends a message to server. */
+  send_message_to_peer(fixture, client_frame_protector, true /* is_client */);
+  unsigned char *server_received_message =
+      gpr_zalloc(TSI_TEST_DEFAULT_CHANNEL_SIZE);
+  size_t server_received_message_size = 0;
+  receive_message_from_peer(
+      fixture, server_frame_protector, server_received_message,
+      &server_received_message_size, false /* is_client */);
+  GPR_ASSERT(config->client_message_size == server_received_message_size);
+  GPR_ASSERT(memcmp(config->client_message, server_received_message,
+                    server_received_message_size) == 0);
+  /* Server sends a message to client. */
+  send_message_to_peer(fixture, server_frame_protector, false /* is_client */);
+  unsigned char *client_received_message =
+      gpr_zalloc(TSI_TEST_DEFAULT_CHANNEL_SIZE);
+  size_t client_received_message_size = 0;
+  receive_message_from_peer(
+      fixture, client_frame_protector, client_received_message,
+      &client_received_message_size, true /* is_client */);
+  GPR_ASSERT(config->server_message_size == client_received_message_size);
+  GPR_ASSERT(memcmp(config->server_message, client_received_message,
+                    client_received_message_size) == 0);
+  /* Destroy server and client frame protectors. */
+  tsi_frame_protector_destroy(client_frame_protector);
+  tsi_frame_protector_destroy(server_frame_protector);
+  gpr_free(server_received_message);
+  gpr_free(client_received_message);
+}
+
+static unsigned char *generate_random_message(size_t size) {
+  size_t i;
+  unsigned char chars[] = "abcdefghijklmnopqrstuvwxyz1234567890";
+  unsigned char *output = gpr_zalloc(sizeof(unsigned char) * size);
+  for (i = 0; i < size - 1; ++i) {
+    output[i] = chars[rand() % (int)(sizeof(chars) - 1)];
+  }
+  return output;
+}
+
+tsi_test_frame_protector_config *tsi_test_frame_protector_config_create(
+    bool use_default_read_buffer_allocated_size,
+    bool use_default_message_buffer_allocated_size,
+    bool use_default_protected_buffer_size, bool use_default_client_message,
+    bool use_default_server_message,
+    bool use_default_client_max_output_protected_frame_size,
+    bool use_default_server_max_output_protected_frame_size,
+    bool use_default_handshake_buffer_size) {
+  tsi_test_frame_protector_config *config = gpr_zalloc(sizeof(*config));
+  /* Set the value for read_buffer_allocated_size. */
+  config->read_buffer_allocated_size =
+      use_default_read_buffer_allocated_size
+          ? TSI_TEST_DEFAULT_BUFFER_SIZE
+          : TSI_TEST_SMALL_READ_BUFFER_ALLOCATED_SIZE;
+  /* Set the value for message_buffer_allocated_size. */
+  config->message_buffer_allocated_size =
+      use_default_message_buffer_allocated_size
+          ? TSI_TEST_DEFAULT_BUFFER_SIZE
+          : TSI_TEST_SMALL_MESSAGE_BUFFER_ALLOCATED_SIZE;
+  /* Set the value for protected_buffer_size. */
+  config->protected_buffer_size = use_default_protected_buffer_size
+                                      ? TSI_TEST_DEFAULT_PROTECTED_BUFFER_SIZE
+                                      : TSI_TEST_SMALL_PROTECTED_BUFFER_SIZE;
+  /* Set the value for client message. */
+  config->client_message_size = use_default_client_message
+                                    ? TSI_TEST_BIG_MESSAGE_SIZE
+                                    : TSI_TEST_SMALL_MESSAGE_SIZE;
+  config->client_message =
+      use_default_client_message
+          ? generate_random_message(TSI_TEST_BIG_MESSAGE_SIZE)
+          : generate_random_message(TSI_TEST_SMALL_MESSAGE_SIZE);
+  /* Set the value for server message. */
+  config->server_message_size = use_default_server_message
+                                    ? TSI_TEST_BIG_MESSAGE_SIZE
+                                    : TSI_TEST_SMALL_MESSAGE_SIZE;
+  config->server_message =
+      use_default_server_message
+          ? generate_random_message(TSI_TEST_BIG_MESSAGE_SIZE)
+          : generate_random_message(TSI_TEST_SMALL_MESSAGE_SIZE);
+  /* Set the value for client max_output_protected_frame_size.
+     If it is 0, we pass NULL to tsi_handshaker_result_create_frame_protector(),
+     which then uses default protected frame size for it. */
+  config->client_max_output_protected_frame_size =
+      use_default_client_max_output_protected_frame_size
+          ? 0
+          : TSI_TEST_SMALL_CLIENT_MAX_OUTPUT_PROTECTED_FRAME_SIZE;
+  /* Set the value for server max_output_protected_frame_size.
+     If it is 0, we pass NULL to tsi_handshaker_result_create_frame_protector(),
+     which then uses default protected frame size for it. */
+  config->server_max_output_protected_frame_size =
+      use_default_server_max_output_protected_frame_size
+          ? 0
+          : TSI_TEST_SMALL_SERVER_MAX_OUTPUT_PROTECTED_FRAME_SIZE;
+  return config;
+}
+
+void tsi_test_frame_protector_config_set_buffer_size(
+    tsi_test_frame_protector_config *config, size_t read_buffer_allocated_size,
+    size_t message_buffer_allocated_size, size_t protected_buffer_size,
+    size_t client_max_output_protected_frame_size,
+    size_t server_max_output_protected_frame_size) {
+  GPR_ASSERT(config != NULL);
+  config->read_buffer_allocated_size = read_buffer_allocated_size;
+  config->message_buffer_allocated_size = message_buffer_allocated_size;
+  config->protected_buffer_size = protected_buffer_size;
+  config->client_max_output_protected_frame_size =
+      client_max_output_protected_frame_size;
+  config->server_max_output_protected_frame_size =
+      server_max_output_protected_frame_size;
+}
+
+void tsi_test_frame_protector_config_destroy(
+    tsi_test_frame_protector_config *config) {
+  GPR_ASSERT(config != NULL);
+  gpr_free(config->client_message);
+  gpr_free(config->server_message);
+  gpr_free(config);
+}
+
+void tsi_test_fixture_init(tsi_test_fixture *fixture) {
+  fixture->config = tsi_test_frame_protector_config_create(
+      true, true, true, true, true, true, true, true);
+  fixture->handshake_buffer_size = TSI_TEST_DEFAULT_BUFFER_SIZE;
+  fixture->client_channel = gpr_zalloc(TSI_TEST_DEFAULT_CHANNEL_SIZE);
+  fixture->server_channel = gpr_zalloc(TSI_TEST_DEFAULT_CHANNEL_SIZE);
+  fixture->bytes_written_to_client_channel = 0;
+  fixture->bytes_written_to_server_channel = 0;
+  fixture->bytes_read_from_client_channel = 0;
+  fixture->bytes_read_from_server_channel = 0;
+  fixture->test_unused_bytes = true;
+  fixture->has_client_finished_first = false;
+}
+
+void tsi_test_fixture_destroy(tsi_test_fixture *fixture) {
+  GPR_ASSERT(fixture != NULL);
+  tsi_test_frame_protector_config_destroy(fixture->config);
+  tsi_handshaker_destroy(fixture->client_handshaker);
+  tsi_handshaker_destroy(fixture->server_handshaker);
+  tsi_handshaker_result_destroy(fixture->client_result);
+  tsi_handshaker_result_destroy(fixture->server_result);
+  gpr_free(fixture->client_channel);
+  gpr_free(fixture->server_channel);
+  GPR_ASSERT(fixture->vtable != NULL);
+  GPR_ASSERT(fixture->vtable->destruct != NULL);
+  fixture->vtable->destruct(fixture);
+  gpr_free(fixture);
+}
diff --git a/test/core/tsi/transport_security_test_lib.h b/test/core/tsi/transport_security_test_lib.h
new file mode 100644
index 0000000000..8ae2024ee4
--- /dev/null
+++ b/test/core/tsi/transport_security_test_lib.h
@@ -0,0 +1,165 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_TEST_CORE_TSI_TRANSPORT_SECURITY_TEST_LIB_H_
+#define GRPC_TEST_CORE_TSI_TRANSPORT_SECURITY_TEST_LIB_H_
+
+#include "src/core/tsi/transport_security_interface.h"
+
+#define TSI_TEST_TINY_HANDSHAKE_BUFFER_SIZE 32
+#define TSI_TEST_SMALL_HANDSHAKE_BUFFER_SIZE 128
+#define TSI_TEST_SMALL_READ_BUFFER_ALLOCATED_SIZE 41
+#define TSI_TEST_SMALL_PROTECTED_BUFFER_SIZE 37
+#define TSI_TEST_SMALL_MESSAGE_BUFFER_ALLOCATED_SIZE 42
+#define TSI_TEST_SMALL_CLIENT_MAX_OUTPUT_PROTECTED_FRAME_SIZE 39
+#define TSI_TEST_SMALL_SERVER_MAX_OUTPUT_PROTECTED_FRAME_SIZE 43
+#define TSI_TEST_DEFAULT_BUFFER_SIZE 4096
+#define TSI_TEST_DEFAULT_PROTECTED_BUFFER_SIZE 16384
+#define TSI_TEST_DEFAULT_CHANNEL_SIZE 32768
+#define TSI_TEST_BIG_MESSAGE_SIZE 17000
+#define TSI_TEST_SMALL_MESSAGE_SIZE 10
+#define TSI_TEST_NUM_OF_ARGUMENTS 8
+#define TSI_TEST_NUM_OF_COMBINATIONS 256
+#define TSI_TEST_UNUSED_BYTES "HELLO GOOGLE"
+
+/* ---  tsi_test_fixture object ---
+  The tests for specific TSI implementations should create their own
+  custom "subclass" of this fixture, which wraps all information
+  that will be used to test correctness of TSI handshakes and frame
+  protect/unprotect operations with respect to TSI implementations. */
+typedef struct tsi_test_fixture tsi_test_fixture;
+
+/* ---  tsi_test_frame_protector_config object ---
+
+  This object is used to configure different parameters of TSI frame protector
+  APIs. */
+typedef struct tsi_test_frame_protector_config tsi_test_frame_protector_config;
+
+/* V-table for tsi_test_fixture operations that are implemented differently in
+   different TSI implementations. */
+typedef struct tsi_test_fixture_vtable {
+  void (*setup_handshakers)(tsi_test_fixture *fixture);
+  void (*check_handshaker_peers)(tsi_test_fixture *fixture);
+  void (*destruct)(tsi_test_fixture *fixture);
+} tranport_security_test_vtable;
+
+struct tsi_test_fixture {
+  const struct tsi_test_fixture_vtable *vtable;
+  /* client/server TSI handshaker used to perform TSI handshakes, and will get
+     instantiated during the call to setup_handshakers. */
+  tsi_handshaker *client_handshaker;
+  tsi_handshaker *server_handshaker;
+  /* client/server TSI handshaker results used to store the result of TSI
+     handshake. If the handshake fails, the result will store NULL upon
+     finishing the handshake. */
+  tsi_handshaker_result *client_result;
+  tsi_handshaker_result *server_result;
+  /* size of buffer used to store data received from the peer. */
+  size_t handshake_buffer_size;
+  /* simulated channels between client and server. If the server (client)
+     wants to send data to the client (server), he will write data to
+     client_channel (server_channel), which will be read by client (server). */
+  uint8_t *client_channel;
+  uint8_t *server_channel;
+  /* size of data written to the client/server channel. */
+  size_t bytes_written_to_client_channel;
+  size_t bytes_written_to_server_channel;
+  /* size of data read from the client/server channel */
+  size_t bytes_read_from_client_channel;
+  size_t bytes_read_from_server_channel;
+  /* tsi_test_frame_protector_config instance */
+  tsi_test_frame_protector_config *config;
+  /* a flag indicating if client has finished TSI handshake first (i.e., before
+     server).
+     The flag should be referred if and only if TSI handshake finishes
+     successfully. */
+  bool has_client_finished_first;
+  /* a flag indicating whether to test tsi_handshaker_result_get_unused_bytes()
+     for TSI implementation. This field is true by default, and false
+     for SSL TSI implementation due to grpc issue #12164
+     (https://github.com/grpc/grpc/issues/12164).
+  */
+  bool test_unused_bytes;
+};
+
+struct tsi_test_frame_protector_config {
+  /* size of buffer used to store protected frames to be unprotected. */
+  size_t read_buffer_allocated_size;
+  /* size of buffer used to store bytes resulted from unprotect operations. */
+  size_t message_buffer_allocated_size;
+  /* size of buffer used to store frames resulted from protect operations. */
+  size_t protected_buffer_size;
+  /* size of client/server maximum frame size. */
+  size_t client_max_output_protected_frame_size;
+  size_t server_max_output_protected_frame_size;
+  /* pointer that points to client/server message to be protected. */
+  uint8_t *client_message;
+  uint8_t *server_message;
+  /* size of client/server message. */
+  size_t client_message_size;
+  size_t server_message_size;
+};
+
+/* This method creates a tsi_test_frame_protector_config instance. Each
+   parameter of this function is a boolean value indicating whether to set the
+   corresponding parameter with a default value or not. If it's false, it will
+   be set with a specific value which is usually much smaller than the default.
+   Both values are defined with #define directive. */
+tsi_test_frame_protector_config *tsi_test_frame_protector_config_create(
+    bool use_default_read_buffer_allocated_size,
+    bool use_default_message_buffer_allocated_size,
+    bool use_default_protected_buffer_size, bool use_default_client_message,
+    bool use_default_server_message,
+    bool use_default_client_max_output_protected_frame_size,
+    bool use_default_server_max_output_protected_frame_size,
+    bool use_default_handshake_buffer_size);
+
+/* This method sets different buffer and frame sizes of a
+   tsi_test_frame_protector_config instance with user provided values. */
+void tsi_test_frame_protector_config_set_buffer_size(
+    tsi_test_frame_protector_config *config, size_t read_buffer_allocated_size,
+    size_t message_buffer_allocated_size, size_t protected_buffer_size,
+    size_t client_max_output_protected_frame_size,
+    size_t server_max_output_protected_frame_size);
+
+/* This method destroys a tsi_test_frame_protector_config instance. */
+void tsi_test_frame_protector_config_destroy(
+    tsi_test_frame_protector_config *config);
+
+/* This method initializes members of tsi_test_fixture instance.
+   Note that the struct instance should be allocated before making
+   this call. */
+void tsi_test_fixture_init(tsi_test_fixture *fixture);
+
+/* This method destroys a tsi_test_fixture instance. Note that the
+   fixture intance must be dynamically allocated and will be freed by
+   this function. */
+void tsi_test_fixture_destroy(tsi_test_fixture *fixture);
+
+/* This method performs a full TSI handshake between a client and a server.
+   Note that the test library will implement the new TSI handshaker API to
+   perform handshakes. */
+void tsi_test_do_handshake(tsi_test_fixture *fixture);
+
+/* This method performs a round trip test between the client and the server.
+   That is, the client sends a protected message to a server who receives the
+   message, and unprotects it. The same operation is triggered again with
+   the client and server switching its role. */
+void tsi_test_do_round_trip(tsi_test_fixture *fixture);
+
+#endif  // GRPC_TEST_CORE_TSI_TRANSPORT_SECURITY_TEST_LIB_H_
diff --git a/test/core/util/BUILD b/test/core/util/BUILD
index 1268c2cd10..10eefe159a 100644
--- a/test/core/util/BUILD
+++ b/test/core/util/BUILD
@@ -12,17 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
 licenses(["notice"])  # Apache v2
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/core/util", visibility = "public")
 
 grpc_cc_library(
     name = "gpr_test_util",
diff --git a/test/core/util/memory_counters.c b/test/core/util/memory_counters.c
index b898057034..9fb3ffe095 100644
--- a/test/core/util/memory_counters.c
+++ b/test/core/util/memory_counters.c
@@ -48,13 +48,13 @@ static void *guard_malloc(size_t size) {
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_size_relative, (gpr_atm)size);
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_allocs_absolute, (gpr_atm)1);
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_allocs_relative, (gpr_atm)1);
-  ptr = g_old_allocs.malloc_fn(size + sizeof(size));
+  ptr = (size_t *)g_old_allocs.malloc_fn(size + sizeof(size));
   *ptr++ = size;
   return ptr;
 }
 
 static void *guard_realloc(void *vptr, size_t size) {
-  size_t *ptr = vptr;
+  size_t *ptr = (size_t *)vptr;
   if (vptr == NULL) {
     return guard_malloc(size);
   }
@@ -67,13 +67,13 @@ static void *guard_realloc(void *vptr, size_t size) {
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_size_relative, -(gpr_atm)*ptr);
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_size_relative, (gpr_atm)size);
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_allocs_absolute, (gpr_atm)1);
-  ptr = g_old_allocs.realloc_fn(ptr, size + sizeof(size));
+  ptr = (size_t *)g_old_allocs.realloc_fn(ptr, size + sizeof(size));
   *ptr++ = size;
   return ptr;
 }
 
 static void guard_free(void *vptr) {
-  size_t *ptr = vptr;
+  size_t *ptr = (size_t *)vptr;
   if (!vptr) return;
   --ptr;
   NO_BARRIER_FETCH_ADD(&g_memory_counters.total_size_relative, -(gpr_atm)*ptr);
diff --git a/test/core/util/mock_endpoint.c b/test/core/util/mock_endpoint.c
index 40cf0a2652..bd386b2148 100644
--- a/test/core/util/mock_endpoint.c
+++ b/test/core/util/mock_endpoint.c
@@ -110,7 +110,7 @@ static const grpc_endpoint_vtable vtable = {
 
 grpc_endpoint *grpc_mock_endpoint_create(void (*on_write)(grpc_slice slice),
                                          grpc_resource_quota *resource_quota) {
-  grpc_mock_endpoint *m = gpr_malloc(sizeof(*m));
+  grpc_mock_endpoint *m = (grpc_mock_endpoint *)gpr_malloc(sizeof(*m));
   m->base.vtable = &vtable;
   char *name;
   gpr_asprintf(&name, "mock_endpoint_%" PRIxPTR, (intptr_t)m);
diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c
index eef1f163f0..38a47584d5 100644
--- a/test/core/util/passthru_endpoint.c
+++ b/test/core/util/passthru_endpoint.c
@@ -183,7 +183,7 @@ void grpc_passthru_endpoint_create(grpc_endpoint **client,
                                    grpc_endpoint **server,
                                    grpc_resource_quota *resource_quota,
                                    grpc_passthru_endpoint_stats *stats) {
-  passthru_endpoint *m = gpr_malloc(sizeof(*m));
+  passthru_endpoint *m = (passthru_endpoint *)gpr_malloc(sizeof(*m));
   m->halves = 2;
   m->shutdown = 0;
   m->stats = stats == NULL ? &m->dummy_stats : stats;
diff --git a/test/core/util/port.c b/test/core/util/port.c
index b1fc722858..61f2e5018f 100644
--- a/test/core/util/port.c
+++ b/test/core/util/port.c
@@ -75,7 +75,8 @@ static void chose_port(int port) {
     atexit(free_chosen_ports);
   }
   num_chosen_ports++;
-  chosen_ports = gpr_realloc(chosen_ports, sizeof(int) * num_chosen_ports);
+  chosen_ports =
+      (int *)gpr_realloc(chosen_ports, sizeof(int) * num_chosen_ports);
   chosen_ports[num_chosen_ports - 1] = port;
 }
 
diff --git a/test/core/util/port_server_client.c b/test/core/util/port_server_client.c
index d5739effb3..ba4028dbee 100644
--- a/test/core/util/port_server_client.c
+++ b/test/core/util/port_server_client.c
@@ -42,19 +42,20 @@ typedef struct freereq {
 
 static void destroy_pops_and_shutdown(grpc_exec_ctx *exec_ctx, void *p,
                                       grpc_error *error) {
-  grpc_pollset *pollset = grpc_polling_entity_pollset(p);
+  grpc_pollset *pollset = grpc_polling_entity_pollset((grpc_polling_entity *)p);
   grpc_pollset_destroy(exec_ctx, pollset);
   gpr_free(pollset);
 }
 
 static void freed_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
                                    grpc_error *error) {
-  freereq *pr = arg;
+  freereq *pr = (freereq *)arg;
   gpr_mu_lock(pr->mu);
   pr->done = 1;
   GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&pr->pops), NULL));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops),
+                        NULL));
   gpr_mu_unlock(pr->mu);
 }
 
@@ -73,7 +74,7 @@ void grpc_free_port_using_server(int port) {
   memset(&req, 0, sizeof(req));
   memset(&rsp, 0, sizeof(rsp));
 
-  grpc_pollset *pollset = gpr_zalloc(grpc_pollset_size());
+  grpc_pollset *pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
   grpc_pollset_init(pollset, &pr.mu);
   pr.pops = grpc_polling_entity_create_from_pollset(pollset);
   shutdown_closure = GRPC_CLOSURE_CREATE(destroy_pops_and_shutdown, &pr.pops,
@@ -130,7 +131,7 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
                                  grpc_error *error) {
   size_t i;
   int port = 0;
-  portreq *pr = arg;
+  portreq *pr = (portreq *)arg;
   int failed = 0;
   grpc_httpcli_response *response = &pr->response;
 
@@ -153,7 +154,8 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
       pr->port = 0;
       GRPC_LOG_IF_ERROR(
           "pollset_kick",
-          grpc_pollset_kick(grpc_polling_entity_pollset(&pr->pops), NULL));
+          grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops),
+                            NULL));
       gpr_mu_unlock(pr->mu);
       return;
     }
@@ -189,7 +191,8 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
   pr->port = port;
   GRPC_LOG_IF_ERROR(
       "pollset_kick",
-      grpc_pollset_kick(grpc_polling_entity_pollset(&pr->pops), NULL));
+      grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops),
+                        NULL));
   gpr_mu_unlock(pr->mu);
 }
 
@@ -204,7 +207,7 @@ int grpc_pick_port_using_server(void) {
 
   memset(&pr, 0, sizeof(pr));
   memset(&req, 0, sizeof(req));
-  grpc_pollset *pollset = gpr_zalloc(grpc_pollset_size());
+  grpc_pollset *pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
   grpc_pollset_init(pollset, &pr.mu);
   pr.pops = grpc_polling_entity_create_from_pollset(pollset);
   shutdown_closure = GRPC_CLOSURE_CREATE(destroy_pops_and_shutdown, &pr.pops,
diff --git a/test/core/util/slice_splitter.c b/test/core/util/slice_splitter.c
index f6d892f166..6fcef9acce 100644
--- a/test/core/util/slice_splitter.c
+++ b/test/core/util/slice_splitter.c
@@ -44,7 +44,8 @@ void grpc_split_slices(grpc_slice_split_mode mode, grpc_slice *src_slices,
   switch (mode) {
     case GRPC_SLICE_SPLIT_IDENTITY:
       *dst_slice_count = src_slice_count;
-      *dst_slices = gpr_malloc(sizeof(grpc_slice) * src_slice_count);
+      *dst_slices =
+          (grpc_slice *)gpr_malloc(sizeof(grpc_slice) * src_slice_count);
       for (i = 0; i < src_slice_count; i++) {
         (*dst_slices)[i] = src_slices[i];
         grpc_slice_ref((*dst_slices)[i]);
@@ -56,7 +57,7 @@ void grpc_split_slices(grpc_slice_split_mode mode, grpc_slice *src_slices,
       for (i = 0; i < src_slice_count; i++) {
         length += GRPC_SLICE_LENGTH(src_slices[i]);
       }
-      *dst_slices = gpr_malloc(sizeof(grpc_slice));
+      *dst_slices = (grpc_slice *)gpr_malloc(sizeof(grpc_slice));
       **dst_slices = grpc_slice_malloc(length);
       length = 0;
       for (i = 0; i < src_slice_count; i++) {
@@ -72,7 +73,7 @@ void grpc_split_slices(grpc_slice_split_mode mode, grpc_slice *src_slices,
         length += GRPC_SLICE_LENGTH(src_slices[i]);
       }
       *dst_slice_count = length;
-      *dst_slices = gpr_malloc(sizeof(grpc_slice) * length);
+      *dst_slices = (grpc_slice *)gpr_malloc(sizeof(grpc_slice) * length);
       length = 0;
       for (i = 0; i < src_slice_count; i++) {
         for (j = 0; j < GRPC_SLICE_LENGTH(src_slices[i]); j++) {
@@ -112,7 +113,7 @@ grpc_slice grpc_slice_merge(grpc_slice *slices, size_t nslices) {
   for (i = 0; i < nslices; i++) {
     if (GRPC_SLICE_LENGTH(slices[i]) + length > capacity) {
       capacity = GPR_MAX(capacity * 2, GRPC_SLICE_LENGTH(slices[i]) + length);
-      out = gpr_realloc(out, capacity);
+      out = (uint8_t *)gpr_realloc(out, capacity);
     }
     memcpy(out + length, GRPC_SLICE_START_PTR(slices[i]),
            GRPC_SLICE_LENGTH(slices[i]));
diff --git a/test/core/util/trickle_endpoint.c b/test/core/util/trickle_endpoint.c
index 4f3c30dcf6..fc066f9d80 100644
--- a/test/core/util/trickle_endpoint.c
+++ b/test/core/util/trickle_endpoint.c
@@ -128,7 +128,7 @@ static int te_get_fd(grpc_endpoint *ep) {
 
 static void te_finish_write(grpc_exec_ctx *exec_ctx, void *arg,
                             grpc_error *error) {
-  trickle_endpoint *te = arg;
+  trickle_endpoint *te = (trickle_endpoint *)arg;
   gpr_mu_lock(&te->mu);
   te->writing = false;
   grpc_slice_buffer_reset_and_unref(&te->writing_buffer);
@@ -142,7 +142,7 @@ static const grpc_endpoint_vtable vtable = {
 
 grpc_endpoint *grpc_trickle_endpoint_create(grpc_endpoint *wrap,
                                             double bytes_per_second) {
-  trickle_endpoint *te = gpr_malloc(sizeof(*te));
+  trickle_endpoint *te = (trickle_endpoint *)gpr_malloc(sizeof(*te));
   te->base.vtable = &vtable;
   te->wrapped = wrap;
   te->bytes_per_second = bytes_per_second;
diff --git a/test/cpp/codegen/BUILD b/test/cpp/codegen/BUILD
index 4780800645..8de46be816 100644
--- a/test/cpp/codegen/BUILD
+++ b/test/cpp/codegen/BUILD
@@ -14,14 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/codegen")
 
 grpc_cc_test(
     name = "codegen_test_full",
diff --git a/test/cpp/codegen/compiler_test_golden b/test/cpp/codegen/compiler_test_golden
index b43c27f3f7..3d664e8825 100644
--- a/test/cpp/codegen/compiler_test_golden
+++ b/test/cpp/codegen/compiler_test_golden
@@ -65,6 +65,9 @@ class ServiceA final {
     std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>> AsyncMethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>>(AsyncMethodA1Raw(context, request, cq));
     }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>> PrepareAsyncMethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>>(PrepareAsyncMethodA1Raw(context, request, cq));
+    }
     // MethodA1 trailing comment 1
     // MethodA2 detached leading comment 1
     //
@@ -76,6 +79,9 @@ class ServiceA final {
     std::unique_ptr< ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>> AsyncMethodA2(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>>(AsyncMethodA2Raw(context, response, cq, tag));
     }
+    std::unique_ptr< ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>> PrepareAsyncMethodA2(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>>(PrepareAsyncMethodA2Raw(context, response, cq));
+    }
     // MethodA2 trailing comment 1
     // Method A3 leading comment 1
     std::unique_ptr< ::grpc::ClientReaderInterface< ::grpc::testing::Response>> MethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request) {
@@ -84,6 +90,9 @@ class ServiceA final {
     std::unique_ptr< ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>> AsyncMethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>>(AsyncMethodA3Raw(context, request, cq, tag));
     }
+    std::unique_ptr< ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>> PrepareAsyncMethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>>(PrepareAsyncMethodA3Raw(context, request, cq));
+    }
     // Method A3 trailing comment 1
     // Method A4 leading comment 1
     std::unique_ptr< ::grpc::ClientReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>> MethodA4(::grpc::ClientContext* context) {
@@ -92,15 +101,22 @@ class ServiceA final {
     std::unique_ptr< ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>> AsyncMethodA4(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>>(AsyncMethodA4Raw(context, cq, tag));
     }
+    std::unique_ptr< ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>> PrepareAsyncMethodA4(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>>(PrepareAsyncMethodA4Raw(context, cq));
+    }
     // Method A4 trailing comment 1
   private:
     virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>* AsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>* PrepareAsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
     virtual ::grpc::ClientWriterInterface< ::grpc::testing::Request>* MethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response) = 0;
     virtual ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>* AsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) = 0;
+    virtual ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>* PrepareAsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq) = 0;
     virtual ::grpc::ClientReaderInterface< ::grpc::testing::Response>* MethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request) = 0;
     virtual ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>* AsyncMethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq, void* tag) = 0;
+    virtual ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>* PrepareAsyncMethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
     virtual ::grpc::ClientReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>* MethodA4Raw(::grpc::ClientContext* context) = 0;
     virtual ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>* AsyncMethodA4Raw(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, void* tag) = 0;
+    virtual ::grpc::ClientAsyncReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>* PrepareAsyncMethodA4Raw(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq) = 0;
   };
   class Stub final : public StubInterface {
    public:
@@ -109,34 +125,50 @@ class ServiceA final {
     std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> AsyncMethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(AsyncMethodA1Raw(context, request, cq));
     }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> PrepareAsyncMethodA1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(PrepareAsyncMethodA1Raw(context, request, cq));
+    }
     std::unique_ptr< ::grpc::ClientWriter< ::grpc::testing::Request>> MethodA2(::grpc::ClientContext* context, ::grpc::testing::Response* response) {
       return std::unique_ptr< ::grpc::ClientWriter< ::grpc::testing::Request>>(MethodA2Raw(context, response));
     }
     std::unique_ptr< ::grpc::ClientAsyncWriter< ::grpc::testing::Request>> AsyncMethodA2(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncWriter< ::grpc::testing::Request>>(AsyncMethodA2Raw(context, response, cq, tag));
     }
+    std::unique_ptr< ::grpc::ClientAsyncWriter< ::grpc::testing::Request>> PrepareAsyncMethodA2(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncWriter< ::grpc::testing::Request>>(PrepareAsyncMethodA2Raw(context, response, cq));
+    }
     std::unique_ptr< ::grpc::ClientReader< ::grpc::testing::Response>> MethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request) {
       return std::unique_ptr< ::grpc::ClientReader< ::grpc::testing::Response>>(MethodA3Raw(context, request));
     }
     std::unique_ptr< ::grpc::ClientAsyncReader< ::grpc::testing::Response>> AsyncMethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncReader< ::grpc::testing::Response>>(AsyncMethodA3Raw(context, request, cq, tag));
     }
+    std::unique_ptr< ::grpc::ClientAsyncReader< ::grpc::testing::Response>> PrepareAsyncMethodA3(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncReader< ::grpc::testing::Response>>(PrepareAsyncMethodA3Raw(context, request, cq));
+    }
     std::unique_ptr< ::grpc::ClientReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>> MethodA4(::grpc::ClientContext* context) {
       return std::unique_ptr< ::grpc::ClientReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>>(MethodA4Raw(context));
     }
     std::unique_ptr<  ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>> AsyncMethodA4(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, void* tag) {
       return std::unique_ptr< ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>>(AsyncMethodA4Raw(context, cq, tag));
     }
+    std::unique_ptr<  ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>> PrepareAsyncMethodA4(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>>(PrepareAsyncMethodA4Raw(context, cq));
+    }
 
    private:
     std::shared_ptr< ::grpc::ChannelInterface> channel_;
     ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* PrepareAsyncMethodA1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
     ::grpc::ClientWriter< ::grpc::testing::Request>* MethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response) override;
     ::grpc::ClientAsyncWriter< ::grpc::testing::Request>* AsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag) override;
+    ::grpc::ClientAsyncWriter< ::grpc::testing::Request>* PrepareAsyncMethodA2Raw(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq) override;
     ::grpc::ClientReader< ::grpc::testing::Response>* MethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request) override;
     ::grpc::ClientAsyncReader< ::grpc::testing::Response>* AsyncMethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq, void* tag) override;
+    ::grpc::ClientAsyncReader< ::grpc::testing::Response>* PrepareAsyncMethodA3Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
     ::grpc::ClientReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>* MethodA4Raw(::grpc::ClientContext* context) override;
     ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>* AsyncMethodA4Raw(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, void* tag) override;
+    ::grpc::ClientAsyncReaderWriter< ::grpc::testing::Request, ::grpc::testing::Response>* PrepareAsyncMethodA4Raw(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq) override;
     const ::grpc::RpcMethod rpcmethod_MethodA1_;
     const ::grpc::RpcMethod rpcmethod_MethodA2_;
     const ::grpc::RpcMethod rpcmethod_MethodA3_;
@@ -372,9 +404,13 @@ class ServiceB final {
     std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>> AsyncMethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>>(AsyncMethodB1Raw(context, request, cq));
     }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>> PrepareAsyncMethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>>(PrepareAsyncMethodB1Raw(context, request, cq));
+    }
     // MethodB1 trailing comment 1
   private:
     virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>* AsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>* PrepareAsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) = 0;
   };
   class Stub final : public StubInterface {
    public:
@@ -383,10 +419,14 @@ class ServiceB final {
     std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> AsyncMethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
       return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(AsyncMethodB1Raw(context, request, cq));
     }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>> PrepareAsyncMethodB1(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>>(PrepareAsyncMethodB1Raw(context, request, cq));
+    }
 
    private:
     std::shared_ptr< ::grpc::ChannelInterface> channel_;
     ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* AsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::grpc::testing::Response>* PrepareAsyncMethodB1Raw(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq) override;
     const ::grpc::RpcMethod rpcmethod_MethodB1_;
   };
   static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
diff --git a/test/cpp/codegen/compiler_test_mock_golden b/test/cpp/codegen/compiler_test_mock_golden
index 8e4b4d5911..f97c2dd83a 100644
--- a/test/cpp/codegen/compiler_test_mock_golden
+++ b/test/cpp/codegen/compiler_test_mock_golden
@@ -15,18 +15,23 @@ class MockServiceAStub : public ServiceA::StubInterface {
  public:
   MOCK_METHOD3(MethodA1, ::grpc::Status(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response));
   MOCK_METHOD3(AsyncMethodA1Raw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncMethodA1Raw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq));
   MOCK_METHOD2(MethodA2Raw, ::grpc::ClientWriterInterface< ::grpc::testing::Request>*(::grpc::ClientContext* context, ::grpc::testing::Response* response));
   MOCK_METHOD4(AsyncMethodA2Raw, ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>*(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq, void* tag));
+  MOCK_METHOD3(PrepareAsyncMethodA2Raw, ::grpc::ClientAsyncWriterInterface< ::grpc::testing::Request>*(::grpc::ClientContext* context, ::grpc::testing::Response* response, ::grpc::CompletionQueue* cq));
   MOCK_METHOD2(MethodA3Raw, ::grpc::ClientReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request));
   MOCK_METHOD4(AsyncMethodA3Raw, ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq, void* tag));
+  MOCK_METHOD3(PrepareAsyncMethodA3Raw, ::grpc::ClientAsyncReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq));
   MOCK_METHOD1(MethodA4Raw, ::grpc::ClientReaderWriterInterface< ::grpc::testing::Request, ::grpc::testing::Response>*(::grpc::ClientContext* context));
   MOCK_METHOD3(AsyncMethodA4Raw, ::grpc::ClientAsyncReaderWriterInterface<::grpc::testing::Request, ::grpc::testing::Response>*(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq, void* tag));
+  MOCK_METHOD2(PrepareAsyncMethodA4Raw, ::grpc::ClientAsyncReaderWriterInterface<::grpc::testing::Request, ::grpc::testing::Response>*(::grpc::ClientContext* context, ::grpc::CompletionQueue* cq));
 };
 
 class MockServiceBStub : public ServiceB::StubInterface {
  public:
   MOCK_METHOD3(MethodB1, ::grpc::Status(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::testing::Response* response));
   MOCK_METHOD3(AsyncMethodB1Raw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncMethodB1Raw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::testing::Response>*(::grpc::ClientContext* context, const ::grpc::testing::Request& request, ::grpc::CompletionQueue* cq));
 };
 
 } // namespace grpc
diff --git a/test/cpp/common/BUILD b/test/cpp/common/BUILD
index be9c279f13..e2b6365b13 100644
--- a/test/cpp/common/BUILD
+++ b/test/cpp/common/BUILD
@@ -14,14 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/common")
 
 grpc_cc_test(
     name = "alarm_cpp_test",
diff --git a/test/cpp/common/alarm_cpp_test.cc b/test/cpp/common/alarm_cpp_test.cc
index ce4168843c..212972d25d 100644
--- a/test/cpp/common/alarm_cpp_test.cc
+++ b/test/cpp/common/alarm_cpp_test.cc
@@ -18,6 +18,8 @@
 
 #include <grpc++/alarm.h>
 #include <grpc++/completion_queue.h>
+#include <thread>
+
 #include <gtest/gtest.h>
 
 #include "test/core/util/test_config.h"
@@ -28,6 +30,46 @@ namespace {
 TEST(AlarmTest, RegularExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
+  Alarm alarm;
+  alarm.Set(&cq, grpc_timeout_seconds_to_deadline(1), junk);
+
+  void* output_tag;
+  bool ok;
+  const CompletionQueue::NextStatus status = cq.AsyncNext(
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(2));
+
+  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(junk, output_tag);
+}
+
+TEST(AlarmTest, MultithreadedRegularExpiry) {
+  CompletionQueue cq;
+  void* junk = reinterpret_cast<void*>(1618033);
+  void* output_tag;
+  bool ok;
+  CompletionQueue::NextStatus status;
+  Alarm alarm;
+
+  std::thread t1([&alarm, &cq, &junk] {
+    alarm.Set(&cq, grpc_timeout_seconds_to_deadline(1), junk);
+  });
+
+  std::thread t2([&cq, &ok, &output_tag, &status] {
+    status = cq.AsyncNext((void**)&output_tag, &ok,
+                          grpc_timeout_seconds_to_deadline(2));
+  });
+
+  t1.join();
+  t2.join();
+  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(junk, output_tag);
+}
+
+TEST(AlarmTest, DeprecatedRegularExpiry) {
+  CompletionQueue cq;
+  void* junk = reinterpret_cast<void*>(1618033);
   Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(1), junk);
 
   void* output_tag;
@@ -43,7 +85,8 @@ TEST(AlarmTest, RegularExpiry) {
 TEST(AlarmTest, MoveConstructor) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm first(&cq, grpc_timeout_seconds_to_deadline(1), junk);
+  Alarm first;
+  first.Set(&cq, grpc_timeout_seconds_to_deadline(1), junk);
   Alarm second(std::move(first));
   void* output_tag;
   bool ok;
@@ -57,7 +100,8 @@ TEST(AlarmTest, MoveConstructor) {
 TEST(AlarmTest, MoveAssignment) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm first(&cq, grpc_timeout_seconds_to_deadline(1), junk);
+  Alarm first;
+  first.Set(&cq, grpc_timeout_seconds_to_deadline(1), junk);
   Alarm second(std::move(first));
   first = std::move(second);
 
@@ -76,7 +120,8 @@ TEST(AlarmTest, RegularExpiryChrono) {
   void* junk = reinterpret_cast<void*>(1618033);
   std::chrono::system_clock::time_point one_sec_deadline =
       std::chrono::system_clock::now() + std::chrono::seconds(1);
-  Alarm alarm(&cq, one_sec_deadline, junk);
+  Alarm alarm;
+  alarm.Set(&cq, one_sec_deadline, junk);
 
   void* output_tag;
   bool ok;
@@ -91,7 +136,8 @@ TEST(AlarmTest, RegularExpiryChrono) {
 TEST(AlarmTest, ZeroExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(0), junk);
+  Alarm alarm;
+  alarm.Set(&cq, grpc_timeout_seconds_to_deadline(0), junk);
 
   void* output_tag;
   bool ok;
@@ -106,7 +152,8 @@ TEST(AlarmTest, ZeroExpiry) {
 TEST(AlarmTest, NegativeExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(-1), junk);
+  Alarm alarm;
+  alarm.Set(&cq, grpc_timeout_seconds_to_deadline(-1), junk);
 
   void* output_tag;
   bool ok;
@@ -121,7 +168,8 @@ TEST(AlarmTest, NegativeExpiry) {
 TEST(AlarmTest, Cancellation) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(2), junk);
+  Alarm alarm;
+  alarm.Set(&cq, grpc_timeout_seconds_to_deadline(2), junk);
   alarm.Cancel();
 
   void* output_tag;
diff --git a/test/cpp/end2end/BUILD b/test/cpp/end2end/BUILD
index 27c5492c17..b29a13d4fb 100644
--- a/test/cpp/end2end/BUILD
+++ b/test/cpp/end2end/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_package")
 
-package(
-    default_visibility=["//visibility:public"], # Allows external users to implement end2end tests.
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/end2end", visibility = "public") # Allows external users to implement end2end tests.
 
 grpc_cc_library(
     name = "test_service_impl",
@@ -199,6 +193,7 @@ grpc_cc_test(
         "//test/cpp/util:test_util",
     ],
     external_deps = [
+        "gmock",
         "gtest",
     ],
 )
@@ -241,6 +236,7 @@ grpc_cc_test(
         "//test/cpp/util:test_util",
     ],
     external_deps = [
+        "gmock",
         "gtest",
     ],
 )
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 7cb7b262de..41090d161a 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -260,11 +260,31 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
     server_address_ << "localhost:" << port_;
 
     // Setup server
+    BuildAndStartServer();
+
+    gpr_tls_set(&g_is_async_end2end_test, 1);
+  }
+
+  void TearDown() override {
+    gpr_tls_set(&g_is_async_end2end_test, 0);
+    server_->Shutdown();
+    void* ignored_tag;
+    bool ignored_ok;
+    cq_->Shutdown();
+    while (cq_->Next(&ignored_tag, &ignored_ok))
+      ;
+    stub_.reset();
+    poll_overrider_.reset();
+    grpc_recycle_unused_port(port_);
+  }
+
+  void BuildAndStartServer() {
     ServerBuilder builder;
     auto server_creds = GetCredentialsProvider()->GetServerCredentials(
         GetParam().credentials_type);
     builder.AddListeningPort(server_address_.str(), server_creds);
-    builder.RegisterService(&service_);
+    service_.reset(new grpc::testing::EchoTestService::AsyncService());
+    builder.RegisterService(service_.get());
     if (GetParam().health_check_service) {
       builder.RegisterService(&health_check_);
     }
@@ -276,20 +296,6 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
         new ServerBuilderSyncPluginDisabler());
     builder.SetOption(move(sync_plugin_disabler));
     server_ = builder.BuildAndStart();
-
-    gpr_tls_set(&g_is_async_end2end_test, 1);
-  }
-
-  void TearDown() override {
-    server_->Shutdown();
-    void* ignored_tag;
-    bool ignored_ok;
-    cq_->Shutdown();
-    while (cq_->Next(&ignored_tag, &ignored_ok))
-      ;
-    poll_overrider_.reset();
-    gpr_tls_set(&g_is_async_end2end_test, 0);
-    grpc_recycle_unused_port(port_);
   }
 
   void ResetStub() {
@@ -319,8 +325,8 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
       std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
           stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
-      service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                           cq_.get(), tag(2));
+      service_->RequestEcho(&srv_ctx, &recv_request, &response_writer,
+                            cq_.get(), cq_.get(), tag(2));
 
       Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
       EXPECT_EQ(send_request.message(), recv_request.message());
@@ -341,7 +347,7 @@ class AsyncEnd2endTest : public ::testing::TestWithParam<TestScenario> {
   std::unique_ptr<ServerCompletionQueue> cq_;
   std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
   std::unique_ptr<Server> server_;
-  grpc::testing::EchoTestService::AsyncService service_;
+  std::unique_ptr<grpc::testing::EchoTestService::AsyncService> service_;
   HealthCheck health_check_;
   std::ostringstream server_address_;
   int port_;
@@ -359,6 +365,26 @@ TEST_P(AsyncEnd2endTest, SequentialRpcs) {
   SendRpc(10);
 }
 
+TEST_P(AsyncEnd2endTest, ReconnectChannel) {
+  if (GetParam().inproc) {
+    return;
+  }
+  ResetStub();
+  SendRpc(1);
+  server_->Shutdown();
+  void* ignored_tag;
+  bool ignored_ok;
+  cq_->Shutdown();
+  while (cq_->Next(&ignored_tag, &ignored_ok))
+    ;
+  BuildAndStartServer();
+  // It needs more than kConnectivityCheckIntervalMsec time to reconnect the
+  // channel.
+  gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                               gpr_time_from_millis(1600, GPR_TIMESPAN)));
+  SendRpc(1);
+}
+
 // We do not need to protect notify because the use is synchronized.
 void ServerWait(Server* server, int* notify) {
   server->Wait();
@@ -370,6 +396,7 @@ TEST_P(AsyncEnd2endTest, WaitAndShutdownTest) {
   ResetStub();
   SendRpc(1);
   EXPECT_EQ(0, notify);
+  gpr_tls_set(&g_is_async_end2end_test, 0);
   server_->Shutdown();
   wait_thread.join();
   EXPECT_EQ(1, notify);
@@ -378,8 +405,9 @@ TEST_P(AsyncEnd2endTest, WaitAndShutdownTest) {
 TEST_P(AsyncEnd2endTest, ShutdownThenWait) {
   ResetStub();
   SendRpc(1);
-  server_->Shutdown();
+  std::thread t([this]() { server_->Shutdown(); });
   server_->Wait();
+  t.join();
 }
 
 // Test a simple RPC using the async version of Next
@@ -407,8 +435,8 @@ TEST_P(AsyncEnd2endTest, AsyncNextRpc) {
   Verifier(GetParam().disable_blocking).Verify(cq_.get(), time_now);
   Verifier(GetParam().disable_blocking).Verify(cq_.get(), time_now);
 
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(2, true)
@@ -444,8 +472,8 @@ TEST_P(AsyncEnd2endTest, SimpleClientStreaming) {
   std::unique_ptr<ClientAsyncWriter<EchoRequest>> cli_stream(
       stub_->AsyncRequestStream(&cli_ctx, &recv_response, cq_.get(), tag(1)));
 
-  service_.RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                                tag(2));
+  service_->RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                                 tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(2, true)
@@ -506,8 +534,8 @@ TEST_P(AsyncEnd2endTest, SimpleClientStreamingWithCoalescingApi) {
   std::unique_ptr<ClientAsyncWriter<EchoRequest>> cli_stream(
       stub_->AsyncRequestStream(&cli_ctx, &recv_response, cq_.get(), tag(1)));
 
-  service_.RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                                tag(2));
+  service_->RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                                 tag(2));
 
   cli_stream->Write(send_request, tag(3));
 
@@ -579,8 +607,8 @@ TEST_P(AsyncEnd2endTest, SimpleServerStreaming) {
   std::unique_ptr<ClientAsyncReader<EchoResponse>> cli_stream(
       stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
 
-  service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
-                                 cq_.get(), cq_.get(), tag(2));
+  service_->RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                  cq_.get(), cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(1, true)
@@ -635,8 +663,8 @@ TEST_P(AsyncEnd2endTest, SimpleServerStreamingWithCoalescingApiWAF) {
   std::unique_ptr<ClientAsyncReader<EchoResponse>> cli_stream(
       stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
 
-  service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
-                                 cq_.get(), cq_.get(), tag(2));
+  service_->RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                  cq_.get(), cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(1, true)
@@ -687,8 +715,8 @@ TEST_P(AsyncEnd2endTest, SimpleServerStreamingWithCoalescingApiWL) {
   std::unique_ptr<ClientAsyncReader<EchoResponse>> cli_stream(
       stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
 
-  service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
-                                 cq_.get(), cq_.get(), tag(2));
+  service_->RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                  cq_.get(), cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(1, true)
@@ -741,8 +769,8 @@ TEST_P(AsyncEnd2endTest, SimpleBidiStreaming) {
   std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse>>
       cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
 
-  service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                             tag(2));
+  service_->RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                              tag(2));
 
   Verifier(GetParam().disable_blocking)
       .Expect(1, true)
@@ -801,8 +829,8 @@ TEST_P(AsyncEnd2endTest, SimpleBidiStreamingWithCoalescingApiWAF) {
   std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse>>
       cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
 
-  service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                             tag(2));
+  service_->RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                              tag(2));
 
   cli_stream->WriteLast(send_request, WriteOptions(), tag(3));
 
@@ -869,8 +897,8 @@ TEST_P(AsyncEnd2endTest, SimpleBidiStreamingWithCoalescingApiWL) {
   std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse>>
       cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
 
-  service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                             tag(2));
+  service_->RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                              tag(2));
 
   cli_stream->WriteLast(send_request, WriteOptions(), tag(3));
 
@@ -946,8 +974,8 @@ TEST_P(AsyncEnd2endTest, ClientInitialMetadataRpc) {
   std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
   auto client_initial_metadata = srv_ctx.client_metadata();
@@ -991,8 +1019,8 @@ TEST_P(AsyncEnd2endTest, ServerInitialMetadataRpc) {
   std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
   srv_ctx.AddInitialMetadata(meta1.first, meta1.second);
@@ -1041,8 +1069,8 @@ TEST_P(AsyncEnd2endTest, ServerTrailingMetadataRpc) {
   std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
   response_writer.SendInitialMetadata(tag(3));
@@ -1104,8 +1132,8 @@ TEST_P(AsyncEnd2endTest, MetadataRpc) {
   std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
   auto client_initial_metadata = srv_ctx.client_metadata();
@@ -1168,8 +1196,8 @@ TEST_P(AsyncEnd2endTest, ServerCheckCancellation) {
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
   srv_ctx.AsyncNotifyWhenDone(tag(5));
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
@@ -1203,8 +1231,8 @@ TEST_P(AsyncEnd2endTest, ServerCheckDone) {
       stub_->AsyncEcho(&cli_ctx, send_request, cq_.get()));
 
   srv_ctx.AsyncNotifyWhenDone(tag(5));
-  service_.RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
-                       cq_.get(), tag(2));
+  service_->RequestEcho(&srv_ctx, &recv_request, &response_writer, cq_.get(),
+                        cq_.get(), tag(2));
 
   Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
   EXPECT_EQ(send_request.message(), recv_request.message());
@@ -1295,8 +1323,8 @@ class AsyncEnd2endServerTryCancelTest : public AsyncEnd2endTest {
     // On the server, request to be notified of 'RequestStream' calls
     // and receive the 'RequestStream' call just made by the client
     srv_ctx.AsyncNotifyWhenDone(tag(11));
-    service_.RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                                  tag(2));
+    service_->RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                                   tag(2));
     Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
 
     // Client sends 3 messages (tags 3, 4 and 5)
@@ -1426,8 +1454,8 @@ class AsyncEnd2endServerTryCancelTest : public AsyncEnd2endTest {
     // On the server, request to be notified of 'ResponseStream' calls and
     // receive the call just made by the client
     srv_ctx.AsyncNotifyWhenDone(tag(11));
-    service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
-                                   cq_.get(), cq_.get(), tag(2));
+    service_->RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                    cq_.get(), cq_.get(), tag(2));
     Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
     EXPECT_EQ(send_request.message(), recv_request.message());
 
@@ -1562,8 +1590,8 @@ class AsyncEnd2endServerTryCancelTest : public AsyncEnd2endTest {
     // On the server, request to be notified of the 'BidiStream' call and
     // receive the call just made by the client
     srv_ctx.AsyncNotifyWhenDone(tag(11));
-    service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
-                               tag(2));
+    service_->RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                                tag(2));
     Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
 
     // Client sends the first and the only message
diff --git a/test/cpp/end2end/client_lb_end2end_test.cc b/test/cpp/end2end/client_lb_end2end_test.cc
index e1160ecdc6..c236f76e89 100644
--- a/test/cpp/end2end/client_lb_end2end_test.cc
+++ b/test/cpp/end2end/client_lb_end2end_test.cc
@@ -85,7 +85,8 @@ class MyTestServiceImpl : public TestServiceImpl {
 
 class ClientLbEnd2endTest : public ::testing::Test {
  protected:
-  ClientLbEnd2endTest() : server_host_("localhost") {}
+  ClientLbEnd2endTest()
+      : server_host_("localhost"), kRequestMessage_("Live long and prosper.") {}
 
   void SetUp() override {
     response_generator_ = grpc_fake_resolver_response_generator_create();
@@ -139,6 +140,7 @@ class ClientLbEnd2endTest : public ::testing::Test {
     }  // else, default to pick first
     args.SetPointer(GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR,
                     response_generator_);
+    args.SetInt("grpc.testing.fixed_reconnect_backoff_ms", 2000);
     std::ostringstream uri;
     uri << "fake:///";
     for (size_t i = 0; i < servers_.size() - 1; ++i) {
@@ -150,18 +152,27 @@ class ClientLbEnd2endTest : public ::testing::Test {
     stub_ = grpc::testing::EchoTestService::NewStub(channel_);
   }
 
-  void SendRpc(bool expect_ok = true) {
+  Status SendRpc(EchoResponse* response = nullptr) {
+    const bool local_response = (response == nullptr);
+    if (local_response) response = new EchoResponse;
     EchoRequest request;
-    EchoResponse response;
-    request.set_message("Live long and prosper.");
+    request.set_message(kRequestMessage_);
     ClientContext context;
-    Status status = stub_->Echo(&context, request, &response);
-    if (expect_ok) {
-      EXPECT_TRUE(status.ok());
-      EXPECT_EQ(response.message(), request.message());
-    } else {
-      EXPECT_FALSE(status.ok());
-    }
+    Status status = stub_->Echo(&context, request, response);
+    if (local_response) delete response;
+    return status;
+  }
+
+  void CheckRpcSendOk() {
+    EchoResponse response;
+    const Status status = SendRpc(&response);
+    EXPECT_TRUE(status.ok());
+    EXPECT_EQ(response.message(), kRequestMessage_);
+  }
+
+  void CheckRpcSendFailure() {
+    const Status status = SendRpc();
+    EXPECT_FALSE(status.ok());
   }
 
   struct ServerData {
@@ -169,16 +180,18 @@ class ClientLbEnd2endTest : public ::testing::Test {
     std::unique_ptr<Server> server_;
     MyTestServiceImpl service_;
     std::unique_ptr<std::thread> thread_;
+    bool server_ready_ = false;
 
     explicit ServerData(const grpc::string& server_host, int port = 0) {
       port_ = port > 0 ? port : grpc_pick_unused_port_or_die();
       gpr_log(GPR_INFO, "starting server on port %d", port_);
       std::mutex mu;
+      std::unique_lock<std::mutex> lock(mu);
       std::condition_variable cond;
       thread_.reset(new std::thread(
           std::bind(&ServerData::Start, this, server_host, &mu, &cond)));
-      std::unique_lock<std::mutex> lock(mu);
-      cond.wait(lock);
+      cond.wait(lock, [this] { return server_ready_; });
+      server_ready_ = false;
       gpr_log(GPR_INFO, "server startup complete");
     }
 
@@ -192,6 +205,7 @@ class ClientLbEnd2endTest : public ::testing::Test {
       builder.RegisterService(&service_);
       server_ = builder.BuildAndStart();
       std::lock_guard<std::mutex> lock(*mu);
+      server_ready_ = true;
       cond->notify_one();
     }
 
@@ -207,16 +221,42 @@ class ClientLbEnd2endTest : public ::testing::Test {
 
   void WaitForServer(size_t server_idx) {
     do {
-      SendRpc();
+      CheckRpcSendOk();
     } while (servers_[server_idx]->service_.request_count() == 0);
     ResetCounters();
   }
 
+  bool SeenAllServers() {
+    for (const auto& server : servers_) {
+      if (server->service_.request_count() == 0) return false;
+    }
+    return true;
+  }
+
+  // Updates \a connection_order by appending to it the index of the newly
+  // connected server. Must be called after every single RPC.
+  void UpdateConnectionOrder(
+      const std::vector<std::unique_ptr<ServerData>>& servers,
+      std::vector<int>* connection_order) {
+    for (size_t i = 0; i < servers.size(); ++i) {
+      if (servers[i]->service_.request_count() == 1) {
+        // Was the server index known? If not, update connection_order.
+        const auto it =
+            std::find(connection_order->begin(), connection_order->end(), i);
+        if (it == connection_order->end()) {
+          connection_order->push_back(i);
+          return;
+        }
+      }
+    }
+  }
+
   const grpc::string server_host_;
   std::shared_ptr<Channel> channel_;
   std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
   std::vector<std::unique_ptr<ServerData>> servers_;
   grpc_fake_resolver_response_generator* response_generator_;
+  const grpc::string kRequestMessage_;
 };
 
 TEST_F(ClientLbEnd2endTest, PickFirst) {
@@ -230,7 +270,7 @@ TEST_F(ClientLbEnd2endTest, PickFirst) {
   }
   SetNextResolution(ports);
   for (size_t i = 0; i < servers_.size(); ++i) {
-    SendRpc();
+    CheckRpcSendOk();
   }
   // All requests should have gone to a single server.
   bool found = false;
@@ -258,7 +298,7 @@ TEST_F(ClientLbEnd2endTest, PickFirstUpdates) {
   ports.emplace_back(servers_[0]->port_);
   SetNextResolution(ports);
   gpr_log(GPR_INFO, "****** SET [0] *******");
-  SendRpc();
+  CheckRpcSendOk();
   EXPECT_EQ(servers_[0]->service_.request_count(), 1);
 
   // An empty update will result in the channel going into TRANSIENT_FAILURE.
@@ -304,7 +344,7 @@ TEST_F(ClientLbEnd2endTest, PickFirstUpdateSuperset) {
   ports.emplace_back(servers_[0]->port_);
   SetNextResolution(ports);
   gpr_log(GPR_INFO, "****** SET [0] *******");
-  SendRpc();
+  CheckRpcSendOk();
   EXPECT_EQ(servers_[0]->service_.request_count(), 1);
   servers_[0]->service_.ResetCounters();
 
@@ -314,7 +354,7 @@ TEST_F(ClientLbEnd2endTest, PickFirstUpdateSuperset) {
   ports.emplace_back(servers_[0]->port_);
   SetNextResolution(ports);
   gpr_log(GPR_INFO, "****** SET superset *******");
-  SendRpc();
+  CheckRpcSendOk();
   // We stick to the previously connected server.
   WaitForServer(0);
   EXPECT_EQ(0, servers_[1]->service_.request_count());
@@ -338,7 +378,7 @@ TEST_F(ClientLbEnd2endTest, PickFirstManyUpdates) {
     for (size_t i = 0; i < 1000; ++i) {
       std::random_shuffle(ports.begin(), ports.end());
       SetNextResolution(ports);
-      if (i % 10 == 0) SendRpc();
+      if (i % 10 == 0) CheckRpcSendOk();
     }
   }
   // Check LB policy name for the channel.
@@ -355,13 +395,23 @@ TEST_F(ClientLbEnd2endTest, RoundRobin) {
     ports.emplace_back(server->port_);
   }
   SetNextResolution(ports);
+  // Wait until all backends are ready.
+  do {
+    CheckRpcSendOk();
+  } while (!SeenAllServers());
+  ResetCounters();
+  // "Sync" to the end of the list. Next sequence of picks will start at the
+  // first server (index 0).
+  WaitForServer(servers_.size() - 1);
+  std::vector<int> connection_order;
   for (size_t i = 0; i < servers_.size(); ++i) {
-    SendRpc();
-  }
-  // One request should have gone to each server.
-  for (size_t i = 0; i < servers_.size(); ++i) {
-    EXPECT_EQ(1, servers_[i]->service_.request_count());
+    CheckRpcSendOk();
+    UpdateConnectionOrder(servers_, &connection_order);
   }
+  // Backends should be iterated over in the order in which the addresses were
+  // given.
+  const auto expected = std::vector<int>{0, 1, 2};
+  EXPECT_EQ(expected, connection_order);
   // Check LB policy name for the channel.
   EXPECT_EQ("round_robin", channel_->GetLoadBalancingPolicyName());
 }
@@ -378,7 +428,7 @@ TEST_F(ClientLbEnd2endTest, RoundRobinUpdates) {
   SetNextResolution(ports);
   WaitForServer(0);
   // Send RPCs. They should all go servers_[0]
-  for (size_t i = 0; i < 10; ++i) SendRpc();
+  for (size_t i = 0; i < 10; ++i) CheckRpcSendOk();
   EXPECT_EQ(10, servers_[0]->service_.request_count());
   EXPECT_EQ(0, servers_[1]->service_.request_count());
   EXPECT_EQ(0, servers_[2]->service_.request_count());
@@ -394,7 +444,7 @@ TEST_F(ClientLbEnd2endTest, RoundRobinUpdates) {
   EXPECT_EQ(0, servers_[1]->service_.request_count());
   WaitForServer(1);
 
-  for (size_t i = 0; i < 10; ++i) SendRpc();
+  for (size_t i = 0; i < 10; ++i) CheckRpcSendOk();
   EXPECT_EQ(0, servers_[0]->service_.request_count());
   EXPECT_EQ(10, servers_[1]->service_.request_count());
   EXPECT_EQ(0, servers_[2]->service_.request_count());
@@ -406,7 +456,7 @@ TEST_F(ClientLbEnd2endTest, RoundRobinUpdates) {
   SetNextResolution(ports);
   WaitForServer(2);
 
-  for (size_t i = 0; i < 10; ++i) SendRpc();
+  for (size_t i = 0; i < 10; ++i) CheckRpcSendOk();
   EXPECT_EQ(0, servers_[0]->service_.request_count());
   EXPECT_EQ(0, servers_[1]->service_.request_count());
   EXPECT_EQ(10, servers_[2]->service_.request_count());
@@ -423,7 +473,7 @@ TEST_F(ClientLbEnd2endTest, RoundRobinUpdates) {
   WaitForServer(2);
 
   // Send three RPCs, one per server.
-  for (size_t i = 0; i < 3; ++i) SendRpc();
+  for (size_t i = 0; i < 3; ++i) CheckRpcSendOk();
   EXPECT_EQ(1, servers_[0]->service_.request_count());
   EXPECT_EQ(1, servers_[1]->service_.request_count());
   EXPECT_EQ(1, servers_[2]->service_.request_count());
@@ -450,6 +500,37 @@ TEST_F(ClientLbEnd2endTest, RoundRobinUpdates) {
   EXPECT_EQ("round_robin", channel_->GetLoadBalancingPolicyName());
 }
 
+TEST_F(ClientLbEnd2endTest, RoundRobinUpdateInError) {
+  const int kNumServers = 3;
+  StartServers(kNumServers);
+  ResetStub("round_robin");
+  std::vector<int> ports;
+
+  // Start with a single server.
+  ports.emplace_back(servers_[0]->port_);
+  SetNextResolution(ports);
+  WaitForServer(0);
+  // Send RPCs. They should all go to servers_[0]
+  for (size_t i = 0; i < 10; ++i) SendRpc();
+  EXPECT_EQ(10, servers_[0]->service_.request_count());
+  EXPECT_EQ(0, servers_[1]->service_.request_count());
+  EXPECT_EQ(0, servers_[2]->service_.request_count());
+  servers_[0]->service_.ResetCounters();
+
+  // Shutdown one of the servers to be sent in the update.
+  servers_[1]->Shutdown(false);
+  ports.emplace_back(servers_[1]->port_);
+  ports.emplace_back(servers_[2]->port_);
+  SetNextResolution(ports);
+  WaitForServer(0);
+  WaitForServer(2);
+
+  // Send three RPCs, one per server.
+  for (size_t i = 0; i < kNumServers; ++i) SendRpc();
+  // The server in shutdown shouldn't receive any.
+  EXPECT_EQ(0, servers_[1]->service_.request_count());
+}
+
 TEST_F(ClientLbEnd2endTest, RoundRobinManyUpdates) {
   // Start servers and send one RPC per server.
   const int kNumServers = 3;
@@ -462,7 +543,7 @@ TEST_F(ClientLbEnd2endTest, RoundRobinManyUpdates) {
   for (size_t i = 0; i < 1000; ++i) {
     std::random_shuffle(ports.begin(), ports.end());
     SetNextResolution(ports);
-    if (i % 10 == 0) SendRpc();
+    if (i % 10 == 0) CheckRpcSendOk();
   }
   // Check LB policy name for the channel.
   EXPECT_EQ("round_robin", channel_->GetLoadBalancingPolicyName());
@@ -473,37 +554,30 @@ TEST_F(ClientLbEnd2endTest, RoundRobinConcurrentUpdates) {
   // update provisions of RR.
 }
 
-TEST_F(ClientLbEnd2endTest, RoundRobinReconnect) {
+TEST_F(ClientLbEnd2endTest, RoundRobinReresolve) {
   // Start servers and send one RPC per server.
-  const int kNumServers = 1;
+  const int kNumServers = 3;
   std::vector<int> ports;
-  ports.push_back(grpc_pick_unused_port_or_die());
+  for (int i = 0; i < kNumServers; ++i) {
+    ports.push_back(grpc_pick_unused_port_or_die());
+  }
   StartServers(kNumServers, ports);
   ResetStub("round_robin");
   SetNextResolution(ports);
-  // Send one RPC per backend and make sure they are used in order.
-  // Note: This relies on the fact that the subchannels are reported in
-  // state READY in the order in which the addresses are specified,
-  // which is only true because the backends are all local.
-  for (size_t i = 0; i < servers_.size(); ++i) {
-    SendRpc();
-    EXPECT_EQ(1, servers_[i]->service_.request_count()) << "for backend #" << i;
+  // Send a number of RPCs, which succeed.
+  for (size_t i = 0; i < 100; ++i) {
+    CheckRpcSendOk();
   }
-  // Check LB policy name for the channel.
-  EXPECT_EQ("round_robin", channel_->GetLoadBalancingPolicyName());
-
   // Kill all servers
   for (size_t i = 0; i < servers_.size(); ++i) {
     servers_[i]->Shutdown(false);
   }
   // Client request should fail.
-  SendRpc(false);
-
+  CheckRpcSendFailure();
   // Bring servers back up on the same port (we aren't recreating the channel).
   StartServers(kNumServers, ports);
-
   // Client request should succeed.
-  SendRpc();
+  CheckRpcSendOk();
 }
 
 }  // namespace
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 8bada48a2b..e54cd03ca2 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -238,6 +238,18 @@ class End2endTest : public ::testing::TestWithParam<TestScenario> {
     int port = grpc_pick_unused_port_or_die();
     server_address_ << "127.0.0.1:" << port;
     // Setup server
+    BuildAndStartServer(processor);
+  }
+
+  void RestartServer(const std::shared_ptr<AuthMetadataProcessor>& processor) {
+    if (is_server_started_) {
+      server_->Shutdown();
+      BuildAndStartServer(processor);
+    }
+  }
+
+  void BuildAndStartServer(
+      const std::shared_ptr<AuthMetadataProcessor>& processor) {
     ServerBuilder builder;
     ConfigureServerBuilder(&builder);
     auto server_creds = GetCredentialsProvider()->GetServerCredentials(
@@ -685,6 +697,20 @@ TEST_P(End2endTest, MultipleRpcs) {
   }
 }
 
+TEST_P(End2endTest, ReconnectChannel) {
+  if (GetParam().inproc) {
+    return;
+  }
+  ResetStub();
+  SendRpc(stub_.get(), 1, false);
+  RestartServer(std::shared_ptr<AuthMetadataProcessor>());
+  // It needs more than kConnectivityCheckIntervalMsec time to reconnect the
+  // channel.
+  gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                               gpr_time_from_millis(1600, GPR_TIMESPAN)));
+  SendRpc(stub_.get(), 1, false);
+}
+
 TEST_P(End2endTest, RequestStreamOneRequest) {
   ResetStub();
   EchoRequest request;
@@ -731,6 +757,22 @@ TEST_P(End2endTest, RequestStreamTwoRequests) {
   EXPECT_TRUE(s.ok());
 }
 
+TEST_P(End2endTest, RequestStreamTwoRequestsWithWriteThrough) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+
+  auto stream = stub_->RequestStream(&context, &response);
+  request.set_message("hello");
+  EXPECT_TRUE(stream->Write(request, WriteOptions().set_write_through()));
+  EXPECT_TRUE(stream->Write(request, WriteOptions().set_write_through()));
+  stream->WritesDone();
+  Status s = stream->Finish();
+  EXPECT_EQ(response.message(), "hellohello");
+  EXPECT_TRUE(s.ok());
+}
+
 TEST_P(End2endTest, RequestStreamTwoRequestsWithCoalescingApi) {
   ResetStub();
   EchoRequest request;
diff --git a/test/cpp/end2end/generic_end2end_test.cc b/test/cpp/end2end/generic_end2end_test.cc
index b9e6e18ca7..33b35108d2 100644
--- a/test/cpp/end2end/generic_end2end_test.cc
+++ b/test/cpp/end2end/generic_end2end_test.cc
@@ -196,6 +196,62 @@ TEST_F(GenericEnd2endTest, SequentialRpcs) {
   SendRpc(10);
 }
 
+TEST_F(GenericEnd2endTest, SequentialUnaryRpcs) {
+  ResetStub();
+  const int num_rpcs = 10;
+  const grpc::string kMethodName("/grpc.cpp.test.util.EchoTestService/Echo");
+  for (int i = 0; i < num_rpcs; i++) {
+    EchoRequest send_request;
+    EchoRequest recv_request;
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    Status recv_status;
+
+    ClientContext cli_ctx;
+    GenericServerContext srv_ctx;
+    GenericServerAsyncReaderWriter stream(&srv_ctx);
+
+    // The string needs to be long enough to test heap-based slice.
+    send_request.set_message("Hello world. Hello world. Hello world.");
+
+    std::unique_ptr<ByteBuffer> cli_send_buffer =
+        SerializeToByteBuffer(&send_request);
+    std::unique_ptr<GenericClientAsyncResponseReader> call =
+        generic_stub_->PrepareUnaryCall(&cli_ctx, kMethodName,
+                                        *cli_send_buffer.get(), &cli_cq_);
+    call->StartCall();
+    ByteBuffer cli_recv_buffer;
+    call->Finish(&cli_recv_buffer, &recv_status, tag(1));
+
+    generic_service_.RequestCall(&srv_ctx, &stream, srv_cq_.get(),
+                                 srv_cq_.get(), tag(4));
+
+    verify_ok(srv_cq_.get(), 4, true);
+    EXPECT_EQ(server_host_, srv_ctx.host().substr(0, server_host_.length()));
+    EXPECT_EQ(kMethodName, srv_ctx.method());
+
+    ByteBuffer srv_recv_buffer;
+    stream.Read(&srv_recv_buffer, tag(5));
+    server_ok(5);
+    EXPECT_TRUE(ParseFromByteBuffer(&srv_recv_buffer, &recv_request));
+    EXPECT_EQ(send_request.message(), recv_request.message());
+
+    send_response.set_message(recv_request.message());
+    std::unique_ptr<ByteBuffer> srv_send_buffer =
+        SerializeToByteBuffer(&send_response);
+    stream.Write(*srv_send_buffer, tag(6));
+    server_ok(6);
+
+    stream.Finish(Status::OK, tag(7));
+    server_ok(7);
+
+    client_ok(1);
+    EXPECT_TRUE(ParseFromByteBuffer(&cli_recv_buffer, &recv_response));
+    EXPECT_EQ(send_response.message(), recv_response.message());
+    EXPECT_TRUE(recv_status.ok());
+  }
+}
+
 // One ping, one pong.
 TEST_F(GenericEnd2endTest, SimpleBidiStreaming) {
   ResetStub();
diff --git a/test/cpp/end2end/grpclb_end2end_test.cc b/test/cpp/end2end/grpclb_end2end_test.cc
index b5cff664f6..77ed155292 100644
--- a/test/cpp/end2end/grpclb_end2end_test.cc
+++ b/test/cpp/end2end/grpclb_end2end_test.cc
@@ -332,7 +332,8 @@ class GrpclbEnd2endTest : public ::testing::Test {
         num_backends_(num_backends),
         num_balancers_(num_balancers),
         client_load_reporting_interval_seconds_(
-            client_load_reporting_interval_seconds) {}
+            client_load_reporting_interval_seconds),
+        kRequestMessage_("Live long and prosper.") {}
 
   void SetUp() override {
     response_generator_ = grpc_fake_resolver_response_generator_create();
@@ -378,6 +379,10 @@ class GrpclbEnd2endTest : public ::testing::Test {
     stub_ = grpc::testing::EchoTestService::NewStub(channel_);
   }
 
+  void ResetBackendCounters() {
+    for (const auto& backend : backends_) backend->ResetCounters();
+  }
+
   ClientStats WaitForLoadReports() {
     ClientStats client_stats;
     for (const auto& balancer : balancers_) {
@@ -386,6 +391,56 @@ class GrpclbEnd2endTest : public ::testing::Test {
     return client_stats;
   }
 
+  bool SeenAllBackends() {
+    for (const auto& backend : backends_) {
+      if (backend->request_count() == 0) return false;
+    }
+    return true;
+  }
+
+  void SendRpcAndCount(int* num_total, int* num_ok, int* num_failure,
+                       int* num_drops) {
+    const Status status = SendRpc();
+    if (status.ok()) {
+      ++*num_ok;
+    } else {
+      if (status.error_message() == "Call dropped by load balancing policy") {
+        ++*num_drops;
+      } else {
+        ++*num_failure;
+      }
+    }
+    ++*num_total;
+  }
+
+  std::tuple<int, int, int> WaitForAllBackends(
+      int num_requests_multiple_of = 1) {
+    int num_ok = 0;
+    int num_failure = 0;
+    int num_drops = 0;
+    int num_total = 0;
+    while (!SeenAllBackends()) {
+      SendRpcAndCount(&num_total, &num_ok, &num_failure, &num_drops);
+    }
+    while (num_total % num_requests_multiple_of != 0) {
+      SendRpcAndCount(&num_total, &num_ok, &num_failure, &num_drops);
+    }
+    ResetBackendCounters();
+    gpr_log(GPR_INFO,
+            "Performed %d warm up requests (a multiple of %d) against the "
+            "backends. %d succeeded, %d failed, %d dropped.",
+            num_total, num_requests_multiple_of, num_ok, num_failure,
+            num_drops);
+    return std::make_tuple(num_ok, num_failure, num_drops);
+  }
+
+  void WaitForBackend(size_t backend_idx) {
+    do {
+      CheckRpcSendOk();
+    } while (backends_[backend_idx]->request_count() == 0);
+    ResetBackendCounters();
+  }
+
   struct AddressData {
     int port;
     bool is_balancer;
@@ -429,20 +484,31 @@ class GrpclbEnd2endTest : public ::testing::Test {
     balancers_.at(i)->add_response(response, delay_ms);
   }
 
-  std::vector<std::pair<Status, EchoResponse>> SendRpc(const string& message,
-                                                       int num_rpcs,
-                                                       int timeout_ms = 1000) {
-    std::vector<std::pair<Status, EchoResponse>> results;
+  Status SendRpc(EchoResponse* response = nullptr, int timeout_ms = 1000) {
+    const bool local_response = (response == nullptr);
+    if (local_response) response = new EchoResponse;
     EchoRequest request;
-    EchoResponse response;
-    request.set_message(message);
-    for (int i = 0; i < num_rpcs; i++) {
-      ClientContext context;
-      context.set_deadline(grpc_timeout_milliseconds_to_deadline(timeout_ms));
-      Status status = stub_->Echo(&context, request, &response);
-      results.push_back(std::make_pair(status, response));
+    request.set_message(kRequestMessage_);
+    ClientContext context;
+    context.set_deadline(grpc_timeout_milliseconds_to_deadline(timeout_ms));
+    Status status = stub_->Echo(&context, request, response);
+    if (local_response) delete response;
+    return status;
+  }
+
+  void CheckRpcSendOk(const size_t times = 1) {
+    for (size_t i = 0; i < times; ++i) {
+      EchoResponse response;
+      const Status status = SendRpc(&response);
+      EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
+                               << " message=" << status.error_message();
+      EXPECT_EQ(response.message(), kRequestMessage_);
     }
-    return results;
+  }
+
+  void CheckRpcSendFailure() {
+    const Status status = SendRpc();
+    EXPECT_FALSE(status.ok());
   }
 
   template <typename T>
@@ -499,14 +565,12 @@ class GrpclbEnd2endTest : public ::testing::Test {
   const int client_load_reporting_interval_seconds_;
   std::shared_ptr<Channel> channel_;
   std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
-
   std::vector<std::unique_ptr<BackendServiceImpl>> backends_;
   std::vector<std::unique_ptr<BalancerServiceImpl>> balancers_;
-
   std::vector<ServerThread<BackendService>> backend_servers_;
   std::vector<ServerThread<BalancerService>> balancer_servers_;
-
   grpc_fake_resolver_response_generator* response_generator_;
+  const grpc::string kRequestMessage_;
 };
 
 class SingleBalancerTest : public GrpclbEnd2endTest {
@@ -521,17 +585,10 @@ TEST_F(SingleBalancerTest, Vanilla) {
       0);
   // Make sure that trying to connect works without a call.
   channel_->GetState(true /* try_to_connect */);
-  // Send 100 RPCs per server.
-  const auto& statuses_and_responses =
-      SendRpc(kMessage_, kNumRpcsPerAddress * num_backends_);
-
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
+  // We need to wait for all backends to come online.
+  WaitForAllBackends();
+  // Send kNumRpcsPerAddress RPCs per server.
+  CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
 
   // Each backend should have gotten 100 requests.
   for (size_t i = 0; i < backends_.size(); ++i) {
@@ -561,8 +618,7 @@ TEST_F(SingleBalancerTest, InitiallyEmptyServerlist) {
 
   const auto t0 = system_clock::now();
   // Client will block: LB will initially send empty serverlist.
-  const auto& statuses_and_responses =
-      SendRpc(kMessage_, num_backends_, kCallDeadlineMs);
+  CheckRpcSendOk(num_backends_);
   const auto ellapsed_ms =
       std::chrono::duration_cast<std::chrono::milliseconds>(
           system_clock::now() - t0);
@@ -576,13 +632,6 @@ TEST_F(SingleBalancerTest, InitiallyEmptyServerlist) {
   for (size_t i = 0; i < backends_.size(); ++i) {
     EXPECT_EQ(1U, backend_servers_[i].service_->request_count());
   }
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
   balancers_[0]->NotifyDoneWithServerlists();
   // The balancer got a single request.
   EXPECT_EQ(1U, balancer_servers_[0].service_->request_count());
@@ -593,70 +642,6 @@ TEST_F(SingleBalancerTest, InitiallyEmptyServerlist) {
   EXPECT_EQ("grpclb", channel_->GetLoadBalancingPolicyName());
 }
 
-TEST_F(SingleBalancerTest, RepeatedServerlist) {
-  constexpr int kServerlistDelayMs = 100;
-
-  // Send a serverlist right away.
-  ScheduleResponseForBalancer(
-      0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
-      0);
-  // ... and the same one a bit later.
-  ScheduleResponseForBalancer(
-      0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
-      kServerlistDelayMs);
-
-  // Send num_backends/2 requests.
-  auto statuses_and_responses = SendRpc(kMessage_, num_backends_ / 2);
-  // only the first half of the backends will receive them.
-  for (size_t i = 0; i < backends_.size(); ++i) {
-    if (i < backends_.size() / 2)
-      EXPECT_EQ(1U, backend_servers_[i].service_->request_count())
-          << "for backend #" << i;
-    else
-      EXPECT_EQ(0U, backend_servers_[i].service_->request_count())
-          << "for backend #" << i;
-  }
-  EXPECT_EQ(statuses_and_responses.size(), num_backends_ / 2);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
-
-  // Wait for the (duplicated) serverlist update.
-  gpr_sleep_until(gpr_time_add(
-      gpr_now(GPR_CLOCK_REALTIME),
-      gpr_time_from_millis(kServerlistDelayMs * 1.1, GPR_TIMESPAN)));
-
-  // Verify the LB has sent two responses.
-  EXPECT_EQ(2U, balancer_servers_[0].service_->response_count());
-
-  // Some more calls to complete the total number of backends.
-  statuses_and_responses = SendRpc(
-      kMessage_,
-      num_backends_ / 2 + (num_backends_ & 0x1) /* extra one if num_bes odd */);
-  // Because a duplicated serverlist should have no effect, all backends must
-  // have been hit once now.
-  for (size_t i = 0; i < backends_.size(); ++i) {
-    EXPECT_EQ(1U, backend_servers_[i].service_->request_count());
-  }
-  EXPECT_EQ(statuses_and_responses.size(), num_backends_ / 2);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
-  balancers_[0]->NotifyDoneWithServerlists();
-  // The balancer got a single request.
-  EXPECT_EQ(1U, balancer_servers_[0].service_->request_count());
-  // Check LB policy name for the channel.
-  EXPECT_EQ("grpclb", channel_->GetLoadBalancingPolicyName());
-}
-
 TEST_F(SingleBalancerTest, BackendsRestart) {
   const size_t kNumRpcsPerAddress = 100;
   ScheduleResponseForBalancer(
@@ -664,21 +649,8 @@ TEST_F(SingleBalancerTest, BackendsRestart) {
       0);
   // Make sure that trying to connect works without a call.
   channel_->GetState(true /* try_to_connect */);
-  // Send 100 RPCs per server.
-  auto statuses_and_responses =
-      SendRpc(kMessage_, kNumRpcsPerAddress * num_backends_);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
-  // Each backend should have gotten 100 requests.
-  for (size_t i = 0; i < backends_.size(); ++i) {
-    EXPECT_EQ(kNumRpcsPerAddress,
-              backend_servers_[i].service_->request_count());
-  }
+  // Send kNumRpcsPerAddress RPCs per server.
+  CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
   balancers_[0]->NotifyDoneWithServerlists();
   // The balancer got a single request.
   EXPECT_EQ(1U, balancer_servers_[0].service_->request_count());
@@ -687,11 +659,7 @@ TEST_F(SingleBalancerTest, BackendsRestart) {
   for (size_t i = 0; i < backends_.size(); ++i) {
     if (backends_[i]->Shutdown()) backend_servers_[i].Shutdown();
   }
-  statuses_and_responses = SendRpc(kMessage_, 1);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    EXPECT_FALSE(status.ok());
-  }
+  CheckRpcSendFailure();
   for (size_t i = 0; i < num_backends_; ++i) {
     backends_.emplace_back(new BackendServiceImpl());
     backend_servers_.emplace_back(ServerThread<BackendService>(
@@ -703,11 +671,7 @@ TEST_F(SingleBalancerTest, BackendsRestart) {
   // TODO(dgq): implement the "backend restart" component as well. We need extra
   // machinery to either update the LB responses "on the fly" or instruct
   // backends which ports to restart on.
-  statuses_and_responses = SendRpc(kMessage_, 1);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    EXPECT_FALSE(status.ok());
-  }
+  CheckRpcSendFailure();
   // Check LB policy name for the channel.
   EXPECT_EQ("grpclb", channel_->GetLoadBalancingPolicyName());
 }
@@ -727,13 +691,9 @@ TEST_F(UpdatesTest, UpdateBalancers) {
 
   // Start servers and send 10 RPCs per server.
   gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
-  auto statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
 
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should have gone to the first backend.
   EXPECT_EQ(10U, backend_servers_[0].service_->request_count());
 
@@ -758,22 +718,12 @@ TEST_F(UpdatesTest, UpdateBalancers) {
   // Wait until update has been processed, as signaled by the second backend
   // receiving a request.
   EXPECT_EQ(0U, backend_servers_[1].service_->request_count());
-  do {
-    auto statuses_and_responses = SendRpc(kMessage_, 1);
-    for (const auto& status_and_response : statuses_and_responses) {
-      EXPECT_TRUE(status_and_response.first.ok());
-      EXPECT_EQ(status_and_response.second.message(), kMessage_);
-    }
-  } while (backend_servers_[1].service_->request_count() == 0);
+  WaitForBackend(1);
 
   backend_servers_[1].service_->ResetCounters();
   gpr_log(GPR_INFO, "========= BEFORE SECOND BATCH ==========");
-  statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH SECOND BATCH ==========");
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should have gone to the second backend.
   EXPECT_EQ(10U, backend_servers_[1].service_->request_count());
 
@@ -804,13 +754,9 @@ TEST_F(UpdatesTest, UpdateBalancersRepeated) {
 
   // Start servers and send 10 RPCs per server.
   gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
-  auto statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
 
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should have gone to the first backend.
   EXPECT_EQ(10U, backend_servers_[0].service_->request_count());
 
@@ -837,11 +783,7 @@ TEST_F(UpdatesTest, UpdateBalancersRepeated) {
       gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(10000, GPR_TIMESPAN));
   // Send 10 seconds worth of RPCs
   do {
-    statuses_and_responses = SendRpc(kMessage_, 1);
-    for (const auto& status_and_response : statuses_and_responses) {
-      EXPECT_TRUE(status_and_response.first.ok());
-      EXPECT_EQ(status_and_response.second.message(), kMessage_);
-    }
+    CheckRpcSendOk();
   } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
   // grpclb continued using the original LB call to the first balancer, which
   // doesn't assign the second backend.
@@ -860,11 +802,7 @@ TEST_F(UpdatesTest, UpdateBalancersRepeated) {
                           gpr_time_from_millis(10000, GPR_TIMESPAN));
   // Send 10 seconds worth of RPCs
   do {
-    statuses_and_responses = SendRpc(kMessage_, 1);
-    for (const auto& status_and_response : statuses_and_responses) {
-      EXPECT_TRUE(status_and_response.first.ok());
-      EXPECT_EQ(status_and_response.second.message(), kMessage_);
-    }
+    CheckRpcSendOk();
   } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
   // grpclb continued using the original LB call to the first balancer, which
   // doesn't assign the second backend.
@@ -886,12 +824,8 @@ TEST_F(UpdatesTest, UpdateBalancersDeadUpdate) {
 
   // Start servers and send 10 RPCs per server.
   gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
-  auto statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should have gone to the first backend.
   EXPECT_EQ(10U, backend_servers_[0].service_->request_count());
 
@@ -903,12 +837,8 @@ TEST_F(UpdatesTest, UpdateBalancersDeadUpdate) {
 
   // This is serviced by the existing RR policy
   gpr_log(GPR_INFO, "========= BEFORE SECOND BATCH ==========");
-  statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH SECOND BATCH ==========");
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should again have gone to the first backend.
   EXPECT_EQ(20U, backend_servers_[0].service_->request_count());
   EXPECT_EQ(0U, backend_servers_[1].service_->request_count());
@@ -935,23 +865,13 @@ TEST_F(UpdatesTest, UpdateBalancersDeadUpdate) {
   // receiving a request. In the meantime, the client continues to be serviced
   // (by the first backend) without interruption.
   EXPECT_EQ(0U, backend_servers_[1].service_->request_count());
-  do {
-    auto statuses_and_responses = SendRpc(kMessage_, 1);
-    for (const auto& status_and_response : statuses_and_responses) {
-      EXPECT_TRUE(status_and_response.first.ok());
-      EXPECT_EQ(status_and_response.second.message(), kMessage_);
-    }
-  } while (backend_servers_[1].service_->request_count() == 0);
+  WaitForBackend(1);
 
   // This is serviced by the existing RR policy
   backend_servers_[1].service_->ResetCounters();
   gpr_log(GPR_INFO, "========= BEFORE THIRD BATCH ==========");
-  statuses_and_responses = SendRpc(kMessage_, 10);
+  CheckRpcSendOk(10);
   gpr_log(GPR_INFO, "========= DONE WITH THIRD BATCH ==========");
-  for (const auto& status_and_response : statuses_and_responses) {
-    EXPECT_TRUE(status_and_response.first.ok());
-    EXPECT_EQ(status_and_response.second.message(), kMessage_);
-  }
   // All 10 requests should have gone to the second backend.
   EXPECT_EQ(10U, backend_servers_[1].service_->request_count());
 
@@ -970,18 +890,24 @@ TEST_F(UpdatesTest, UpdateBalancersDeadUpdate) {
 
 TEST_F(SingleBalancerTest, Drop) {
   const size_t kNumRpcsPerAddress = 100;
+  const int num_of_drop_by_rate_limiting_addresses = 1;
+  const int num_of_drop_by_load_balancing_addresses = 2;
+  const int num_of_drop_addresses = num_of_drop_by_rate_limiting_addresses +
+                                    num_of_drop_by_load_balancing_addresses;
+  const int num_total_addresses = num_backends_ + num_of_drop_addresses;
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(
-             GetBackendPorts(), {{"rate_limiting", 1}, {"load_balancing", 2}}),
+             GetBackendPorts(),
+             {{"rate_limiting", num_of_drop_by_rate_limiting_addresses},
+              {"load_balancing", num_of_drop_by_load_balancing_addresses}}),
       0);
-  // Send 100 RPCs for each server and drop address.
-  const auto& statuses_and_responses =
-      SendRpc(kMessage_, kNumRpcsPerAddress * (num_backends_ + 3));
-
+  // Wait until all backends are ready.
+  WaitForAllBackends();
+  // Send kNumRpcsPerAddress RPCs for each server and drop address.
   size_t num_drops = 0;
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
+  for (size_t i = 0; i < kNumRpcsPerAddress * num_total_addresses; ++i) {
+    EchoResponse response;
+    const Status status = SendRpc(&response);
     if (!status.ok() &&
         status.error_message() == "Call dropped by load balancing policy") {
       ++num_drops;
@@ -991,7 +917,7 @@ TEST_F(SingleBalancerTest, Drop) {
       EXPECT_EQ(response.message(), kMessage_);
     }
   }
-  EXPECT_EQ(kNumRpcsPerAddress * 3, num_drops);
+  EXPECT_EQ(kNumRpcsPerAddress * num_of_drop_addresses, num_drops);
 
   // Each backend should have gotten 100 requests.
   for (size_t i = 0; i < backends_.size(); ++i) {
@@ -1006,43 +932,38 @@ TEST_F(SingleBalancerTest, Drop) {
 
 TEST_F(SingleBalancerTest, DropAllFirst) {
   // All registered addresses are marked as "drop".
+  const int num_of_drop_by_rate_limiting_addresses = 1;
+  const int num_of_drop_by_load_balancing_addresses = 1;
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(
-             {}, {{"rate_limiting", 1}, {"load_balancing", 1}}),
+             {}, {{"rate_limiting", num_of_drop_by_rate_limiting_addresses},
+                  {"load_balancing", num_of_drop_by_load_balancing_addresses}}),
       0);
-  const auto& statuses_and_responses = SendRpc(kMessage_, 1);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    EXPECT_FALSE(status.ok());
-    EXPECT_EQ(status.error_message(), "Call dropped by load balancing policy");
-  }
+  const Status status = SendRpc();
+  EXPECT_FALSE(status.ok());
+  EXPECT_EQ(status.error_message(), "Call dropped by load balancing policy");
 }
 
 TEST_F(SingleBalancerTest, DropAll) {
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
       0);
+  const int num_of_drop_by_rate_limiting_addresses = 1;
+  const int num_of_drop_by_load_balancing_addresses = 1;
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(
-             {}, {{"rate_limiting", 1}, {"load_balancing", 1}}),
+             {}, {{"rate_limiting", num_of_drop_by_rate_limiting_addresses},
+                  {"load_balancing", num_of_drop_by_load_balancing_addresses}}),
       1000);
 
   // First call succeeds.
-  auto statuses_and_responses = SendRpc(kMessage_, 1);
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
+  CheckRpcSendOk();
   // But eventually, the update with only dropped servers is processed and calls
   // fail.
+  Status status;
   do {
-    statuses_and_responses = SendRpc(kMessage_, 1);
-    ASSERT_EQ(statuses_and_responses.size(), 1UL);
-  } while (statuses_and_responses[0].first.ok());
-  const Status& status = statuses_and_responses[0].first;
+    status = SendRpc();
+  } while (status.ok());
   EXPECT_FALSE(status.ok());
   EXPECT_EQ(status.error_message(), "Call dropped by load balancing policy");
 }
@@ -1057,18 +978,13 @@ TEST_F(SingleBalancerWithClientLoadReportingTest, Vanilla) {
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(GetBackendPorts(), {}),
       0);
-  // Send 100 RPCs per server.
-  const auto& statuses_and_responses =
-      SendRpc(kMessage_, kNumRpcsPerAddress * num_backends_);
-
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
-    EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
-                             << " message=" << status.error_message();
-    EXPECT_EQ(response.message(), kMessage_);
-  }
-
+  // Wait until all backends are ready.
+  int num_ok = 0;
+  int num_failure = 0;
+  int num_drops = 0;
+  std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends();
+  // Send kNumRpcsPerAddress RPCs per server.
+  CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
   // Each backend should have gotten 100 requests.
   for (size_t i = 0; i < backends_.size(); ++i) {
     EXPECT_EQ(kNumRpcsPerAddress,
@@ -1081,29 +997,41 @@ TEST_F(SingleBalancerWithClientLoadReportingTest, Vanilla) {
   EXPECT_EQ(1U, balancer_servers_[0].service_->response_count());
 
   const ClientStats client_stats = WaitForLoadReports();
-  EXPECT_EQ(kNumRpcsPerAddress * num_backends_, client_stats.num_calls_started);
-  EXPECT_EQ(kNumRpcsPerAddress * num_backends_,
+  EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + num_ok,
+            client_stats.num_calls_started);
+  EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + num_ok,
             client_stats.num_calls_finished);
   EXPECT_EQ(0U, client_stats.num_calls_finished_with_client_failed_to_send);
-  EXPECT_EQ(kNumRpcsPerAddress * num_backends_,
+  EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + (num_ok + num_drops),
             client_stats.num_calls_finished_known_received);
   EXPECT_THAT(client_stats.drop_token_counts, ::testing::ElementsAre());
 }
 
 TEST_F(SingleBalancerWithClientLoadReportingTest, Drop) {
   const size_t kNumRpcsPerAddress = 3;
+  const int num_of_drop_by_rate_limiting_addresses = 2;
+  const int num_of_drop_by_load_balancing_addresses = 1;
+  const int num_of_drop_addresses = num_of_drop_by_rate_limiting_addresses +
+                                    num_of_drop_by_load_balancing_addresses;
+  const int num_total_addresses = num_backends_ + num_of_drop_addresses;
   ScheduleResponseForBalancer(
       0, BalancerServiceImpl::BuildResponseForBackends(
-             GetBackendPorts(), {{"rate_limiting", 2}, {"load_balancing", 1}}),
+             GetBackendPorts(),
+             {{"rate_limiting", num_of_drop_by_rate_limiting_addresses},
+              {"load_balancing", num_of_drop_by_load_balancing_addresses}}),
       0);
-  // Send 100 RPCs for each server and drop address.
-  const auto& statuses_and_responses =
-      SendRpc(kMessage_, kNumRpcsPerAddress * (num_backends_ + 3));
-
+  // Wait until all backends are ready.
+  int num_warmup_ok = 0;
+  int num_warmup_failure = 0;
+  int num_warmup_drops = 0;
+  std::tie(num_warmup_ok, num_warmup_failure, num_warmup_drops) =
+      WaitForAllBackends(num_total_addresses /* num_requests_multiple_of */);
+  const int num_total_warmup_requests =
+      num_warmup_ok + num_warmup_failure + num_warmup_drops;
   size_t num_drops = 0;
-  for (const auto& status_and_response : statuses_and_responses) {
-    const Status& status = status_and_response.first;
-    const EchoResponse& response = status_and_response.second;
+  for (size_t i = 0; i < kNumRpcsPerAddress * num_total_addresses; ++i) {
+    EchoResponse response;
+    const Status status = SendRpc(&response);
     if (!status.ok() &&
         status.error_message() == "Call dropped by load balancing policy") {
       ++num_drops;
@@ -1113,8 +1041,7 @@ TEST_F(SingleBalancerWithClientLoadReportingTest, Drop) {
       EXPECT_EQ(response.message(), kMessage_);
     }
   }
-  EXPECT_EQ(kNumRpcsPerAddress * 3, num_drops);
-
+  EXPECT_EQ(kNumRpcsPerAddress * num_of_drop_addresses, num_drops);
   // Each backend should have gotten 100 requests.
   for (size_t i = 0; i < backends_.size(); ++i) {
     EXPECT_EQ(kNumRpcsPerAddress,
@@ -1127,17 +1054,28 @@ TEST_F(SingleBalancerWithClientLoadReportingTest, Drop) {
   EXPECT_EQ(1U, balancer_servers_[0].service_->response_count());
 
   const ClientStats client_stats = WaitForLoadReports();
-  EXPECT_EQ(kNumRpcsPerAddress * (num_backends_ + 3),
-            client_stats.num_calls_started);
-  EXPECT_EQ(kNumRpcsPerAddress * (num_backends_ + 3),
-            client_stats.num_calls_finished);
+  EXPECT_EQ(
+      kNumRpcsPerAddress * num_total_addresses + num_total_warmup_requests,
+      client_stats.num_calls_started);
+  EXPECT_EQ(
+      kNumRpcsPerAddress * num_total_addresses + num_total_warmup_requests,
+      client_stats.num_calls_finished);
   EXPECT_EQ(0U, client_stats.num_calls_finished_with_client_failed_to_send);
-  EXPECT_EQ(kNumRpcsPerAddress * num_backends_,
+  EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + num_warmup_ok,
             client_stats.num_calls_finished_known_received);
-  EXPECT_THAT(client_stats.drop_token_counts,
-              ::testing::ElementsAre(
-                  ::testing::Pair("load_balancing", kNumRpcsPerAddress),
-                  ::testing::Pair("rate_limiting", kNumRpcsPerAddress * 2)));
+  // The number of warmup request is a multiple of the number of addresses.
+  // Therefore, all addresses in the scheduled balancer response are hit the
+  // same number of times.
+  const int num_times_drop_addresses_hit =
+      num_warmup_drops / num_of_drop_addresses;
+  EXPECT_THAT(
+      client_stats.drop_token_counts,
+      ::testing::ElementsAre(
+          ::testing::Pair("load_balancing",
+                          (kNumRpcsPerAddress + num_times_drop_addresses_hit)),
+          ::testing::Pair(
+              "rate_limiting",
+              (kNumRpcsPerAddress + num_times_drop_addresses_hit) * 2)));
 }
 
 }  // namespace
diff --git a/test/cpp/interop/BUILD b/test/cpp/interop/BUILD
index 9123bd929e..4f21551ff4 100644
--- a/test/cpp/interop/BUILD
+++ b/test/cpp/interop/BUILD
@@ -14,14 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_test", "grpc_cc_binary", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/interop")
 
 grpc_cc_library(
     name = "server_helper_lib",
diff --git a/test/cpp/microbenchmarks/BUILD b/test/cpp/microbenchmarks/BUILD
index 442da38426..0b69e9ba9a 100644
--- a/test/cpp/microbenchmarks/BUILD
+++ b/test/cpp/microbenchmarks/BUILD
@@ -14,14 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library", "grpc_cc_binary", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/microbenchmarks")
 
 grpc_cc_test(
     name = "noop-benchmark",
@@ -33,75 +28,118 @@ grpc_cc_test(
 
 grpc_cc_library(
     name = "helpers",
+    testonly = 1,
     srcs = ["helpers.cc"],
     hdrs = [
         "fullstack_context_mutators.h",
         "fullstack_fixtures.h",
         "helpers.h",
     ],
+    external_deps = [
+        "benchmark",
+    ],
     deps = [
         "//:grpc++_unsecure",
         "//src/proto/grpc/testing:echo_proto",
         "//test/core/util:grpc_test_util_unsecure",
     ],
-    external_deps = [
-        "benchmark",
-    ],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_closure",
+    testonly = 1,
     srcs = ["bm_closure.cc"],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_cq",
+    testonly = 1,
     srcs = ["bm_cq.cc"],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_cq_multiple_threads",
+    testonly = 1,
     srcs = ["bm_cq_multiple_threads.cc"],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_error",
+    testonly = 1,
     srcs = ["bm_error.cc"],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_library(
+    name = "fullstack_streaming_ping_pong_h",
+    testonly = 1,
+    hdrs = [
+        "fullstack_streaming_ping_pong.h",
+    ],
+    deps = [":helpers"],
+)
+
+grpc_cc_binary(
     name = "bm_fullstack_streaming_ping_pong",
-    srcs = ["bm_fullstack_streaming_ping_pong.cc"],
+    testonly = 1,
+    srcs = [
+        "bm_fullstack_streaming_ping_pong.cc",
+    ],
+    deps = [":fullstack_streaming_ping_pong_h"],
+)
+
+grpc_cc_library(
+    name = "fullstack_streaming_pump_h",
+    testonly = 1,
+    hdrs = [
+        "fullstack_streaming_pump.h",
+    ],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_fullstack_streaming_pump",
-    srcs = ["bm_fullstack_streaming_pump.cc"],
-    deps = [":helpers"],
+    testonly = 1,
+    srcs = [
+        "bm_fullstack_streaming_pump.cc",
+    ],
+    deps = [":fullstack_streaming_pump_h"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
     name = "bm_fullstack_trickle",
+    testonly = 1,
     srcs = ["bm_fullstack_trickle.cc"],
-    deps = [":helpers"],
-    external_deps = [
-        "gflags",
+    deps = [
+        ":helpers",
+        "//test/cpp/util:test_config",
     ],
 )
 
-grpc_cc_test(
-    name = "bm_fullstack_unary_ping_pong",
-    srcs = ["bm_fullstack_unary_ping_pong.cc"],
+grpc_cc_library(
+    name = "fullstack_unary_ping_pong_h",
+    testonly = 1,
+    hdrs = [
+        "fullstack_unary_ping_pong.h",
+    ],
     deps = [":helpers"],
 )
 
-grpc_cc_test(
+grpc_cc_binary(
+    name = "bm_fullstack_unary_ping_pong",
+    testonly = 1,
+    srcs = [
+        "bm_fullstack_unary_ping_pong.cc",
+    ],
+    deps = [":fullstack_unary_ping_pong_h"],
+)
+
+grpc_cc_binary(
     name = "bm_metadata",
+    testonly = 1,
     srcs = ["bm_metadata.cc"],
     deps = [":helpers"],
 )
diff --git a/test/cpp/microbenchmarks/bm_call_create.cc b/test/cpp/microbenchmarks/bm_call_create.cc
index 508f7f94d6..cadc9b2a11 100644
--- a/test/cpp/microbenchmarks/bm_call_create.cc
+++ b/test/cpp/microbenchmarks/bm_call_create.cc
@@ -35,10 +35,11 @@ extern "C" {
 #include "src/core/ext/filters/http/client/http_client_filter.h"
 #include "src/core/ext/filters/http/message_compress/message_compress_filter.h"
 #include "src/core/ext/filters/http/server/http_server_filter.h"
-#include "src/core/ext/filters/load_reporting/load_reporting_filter.h"
+#include "src/core/ext/filters/load_reporting/server_load_reporting_filter.h"
 #include "src/core/ext/filters/message_size/message_size_filter.h"
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/iomgr/call_combiner.h"
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/transport/transport_impl.h"
@@ -396,10 +397,6 @@ grpc_error *InitChannelElem(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
 
 void DestroyChannelElem(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem) {}
 
-char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return gpr_strdup("peer");
-}
-
 void GetChannelInfo(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                     const grpc_channel_info *channel_info) {}
 
@@ -412,7 +409,6 @@ static const grpc_channel_filter dummy_filter = {StartTransportStreamOp,
                                                  0,
                                                  InitChannelElem,
                                                  DestroyChannelElem,
-                                                 GetPeer,
                                                  GetChannelInfo,
                                                  "dummy_filter"};
 
@@ -459,11 +455,6 @@ void DestroyStream(grpc_exec_ctx *exec_ctx, grpc_transport *self,
 /* implementation of grpc_transport_destroy */
 void Destroy(grpc_exec_ctx *exec_ctx, grpc_transport *self) {}
 
-/* implementation of grpc_transport_get_peer */
-char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_transport *self) {
-  return gpr_strdup("transport_peer");
-}
-
 /* implementation of grpc_transport_get_endpoint */
 grpc_endpoint *GetEndpoint(grpc_exec_ctx *exec_ctx, grpc_transport *self) {
   return nullptr;
@@ -473,7 +464,7 @@ static const grpc_transport_vtable dummy_transport_vtable = {
     0,          "dummy_http2", InitStream,
     SetPollset, SetPollsetSet, PerformStreamOp,
     PerformOp,  DestroyStream, Destroy,
-    GetPeer,    GetEndpoint};
+    GetEndpoint};
 
 static grpc_transport dummy_transport = {&dummy_transport_vtable};
 
@@ -629,7 +620,7 @@ BENCHMARK_TEMPLATE(BM_IsolatedFilter, HttpServerFilter, SendEmptyMetadata);
 typedef Fixture<&grpc_message_size_filter, CHECKS_NOT_LAST> MessageSizeFilter;
 BENCHMARK_TEMPLATE(BM_IsolatedFilter, MessageSizeFilter, NoOp);
 BENCHMARK_TEMPLATE(BM_IsolatedFilter, MessageSizeFilter, SendEmptyMetadata);
-typedef Fixture<&grpc_load_reporting_filter, CHECKS_NOT_LAST>
+typedef Fixture<&grpc_server_load_reporting_filter, CHECKS_NOT_LAST>
     LoadReportingFilter;
 BENCHMARK_TEMPLATE(BM_IsolatedFilter, LoadReportingFilter, NoOp);
 BENCHMARK_TEMPLATE(BM_IsolatedFilter, LoadReportingFilter, SendEmptyMetadata);
@@ -639,18 +630,22 @@ BENCHMARK_TEMPLATE(BM_IsolatedFilter, LoadReportingFilter, SendEmptyMetadata);
 
 namespace isolated_call_filter {
 
+typedef struct { grpc_call_combiner *call_combiner; } call_data;
+
 static void StartTransportStreamOp(grpc_exec_ctx *exec_ctx,
                                    grpc_call_element *elem,
                                    grpc_transport_stream_op_batch *op) {
+  call_data *calld = static_cast<call_data *>(elem->call_data);
   if (op->recv_initial_metadata) {
-    GRPC_CLOSURE_SCHED(
-        exec_ctx,
+    GRPC_CALL_COMBINER_START(
+        exec_ctx, calld->call_combiner,
         op->payload->recv_initial_metadata.recv_initial_metadata_ready,
-        GRPC_ERROR_NONE);
+        GRPC_ERROR_NONE, "recv_initial_metadata");
   }
   if (op->recv_message) {
-    GRPC_CLOSURE_SCHED(exec_ctx, op->payload->recv_message.recv_message_ready,
-                       GRPC_ERROR_NONE);
+    GRPC_CALL_COMBINER_START(exec_ctx, calld->call_combiner,
+                             op->payload->recv_message.recv_message_ready,
+                             GRPC_ERROR_NONE, "recv_message");
   }
   GRPC_CLOSURE_SCHED(exec_ctx, op->on_complete, GRPC_ERROR_NONE);
 }
@@ -667,6 +662,8 @@ static void StartTransportOp(grpc_exec_ctx *exec_ctx,
 static grpc_error *InitCallElem(grpc_exec_ctx *exec_ctx,
                                 grpc_call_element *elem,
                                 const grpc_call_element_args *args) {
+  call_data *calld = static_cast<call_data *>(elem->call_data);
+  calld->call_combiner = args->call_combiner;
   return GRPC_ERROR_NONE;
 }
 
@@ -687,24 +684,19 @@ grpc_error *InitChannelElem(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
 
 void DestroyChannelElem(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem) {}
 
-char *GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return gpr_strdup("peer");
-}
-
 void GetChannelInfo(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                     const grpc_channel_info *channel_info) {}
 
 static const grpc_channel_filter isolated_call_filter = {
     StartTransportStreamOp,
     StartTransportOp,
-    0,
+    sizeof(call_data),
     InitCallElem,
     SetPollsetOrPollsetSet,
     DestroyCallElem,
     0,
     InitChannelElem,
     DestroyChannelElem,
-    GetPeer,
     GetChannelInfo,
     "isolated_call_filter"};
 }  // namespace isolated_call_filter
diff --git a/test/cpp/microbenchmarks/bm_chttp2_transport.cc b/test/cpp/microbenchmarks/bm_chttp2_transport.cc
index cb113c5254..070034fe33 100644
--- a/test/cpp/microbenchmarks/bm_chttp2_transport.cc
+++ b/test/cpp/microbenchmarks/bm_chttp2_transport.cc
@@ -29,6 +29,7 @@
 extern "C" {
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/resource_quota.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/transport/static_metadata.h"
@@ -154,23 +155,59 @@ class Fixture {
   grpc_transport *t_;
 };
 
-static void DoNothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
+class Closure : public grpc_closure {
+ public:
+  virtual ~Closure() {}
+};
+
+template <class F>
+std::unique_ptr<Closure> MakeClosure(
+    F f, grpc_closure_scheduler *sched = grpc_schedule_on_exec_ctx) {
+  struct C : public Closure {
+    C(const F &f, grpc_closure_scheduler *sched) : f_(f) {
+      GRPC_CLOSURE_INIT(this, Execute, this, sched);
+    }
+    F f_;
+    static void Execute(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+      static_cast<C *>(arg)->f_(exec_ctx, error);
+    }
+  };
+  return std::unique_ptr<Closure>(new C(f, sched));
+}
+
+template <class F>
+grpc_closure *MakeOnceClosure(
+    F f, grpc_closure_scheduler *sched = grpc_schedule_on_exec_ctx) {
+  struct C : public grpc_closure {
+    C(const F &f) : f_(f) {}
+    F f_;
+    static void Execute(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+      static_cast<C *>(arg)->f_(exec_ctx, error);
+      delete static_cast<C *>(arg);
+    }
+  };
+  auto *c = new C{f};
+  return GRPC_CLOSURE_INIT(c, C::Execute, c, sched);
+}
 
 class Stream {
  public:
   Stream(Fixture *f) : f_(f) {
-    GRPC_STREAM_REF_INIT(&refcount_, 1, DoNothing, nullptr, "test_stream");
     stream_size_ = grpc_transport_stream_size(f->transport());
     stream_ = gpr_malloc(stream_size_);
     arena_ = gpr_arena_create(4096);
   }
 
   ~Stream() {
+    gpr_event_wait(&done_, gpr_inf_future(GPR_CLOCK_REALTIME));
     gpr_free(stream_);
     gpr_arena_destroy(arena_);
   }
 
   void Init(benchmark::State &state) {
+    GRPC_STREAM_REF_INIT(&refcount_, 1, &Stream::FinishDestroy, this,
+                         "test_stream");
+    gpr_event_init(&done_);
     memset(stream_, 0, stream_size_);
     if ((state.iterations() & 0xffff) == 0) {
       gpr_arena_destroy(arena_);
@@ -181,13 +218,17 @@ class Stream {
                                NULL, arena_);
   }
 
-  void DestroyThen(grpc_closure *closure) {
-    grpc_transport_destroy_stream(f_->exec_ctx(), f_->transport(),
-                                  static_cast<grpc_stream *>(stream_), closure);
+  void DestroyThen(grpc_exec_ctx *exec_ctx, grpc_closure *closure) {
+    destroy_closure_ = closure;
+#ifndef NDEBUG
+    grpc_stream_unref(exec_ctx, &refcount_, "DestroyThen");
+#else
+    grpc_stream_unref(exec_ctx, &refcount_);
+#endif
   }
 
-  void Op(grpc_transport_stream_op_batch *op) {
-    grpc_transport_perform_stream_op(f_->exec_ctx(), f_->transport(),
+  void Op(grpc_exec_ctx *exec_ctx, grpc_transport_stream_op_batch *op) {
+    grpc_transport_perform_stream_op(exec_ctx, f_->transport(),
                                      static_cast<grpc_stream *>(stream_), op);
   }
 
@@ -196,48 +237,24 @@ class Stream {
   }
 
  private:
+  static void FinishDestroy(grpc_exec_ctx *exec_ctx, void *arg,
+                            grpc_error *error) {
+    auto stream = static_cast<Stream *>(arg);
+    grpc_transport_destroy_stream(exec_ctx, stream->f_->transport(),
+                                  static_cast<grpc_stream *>(stream->stream_),
+                                  stream->destroy_closure_);
+    gpr_event_set(&stream->done_, (void *)1);
+  }
+
   Fixture *f_;
   grpc_stream_refcount refcount_;
   gpr_arena *arena_;
   size_t stream_size_;
   void *stream_;
+  grpc_closure *destroy_closure_ = nullptr;
+  gpr_event done_;
 };
 
-class Closure : public grpc_closure {
- public:
-  virtual ~Closure() {}
-};
-
-template <class F>
-std::unique_ptr<Closure> MakeClosure(
-    F f, grpc_closure_scheduler *sched = grpc_schedule_on_exec_ctx) {
-  struct C : public Closure {
-    C(const F &f, grpc_closure_scheduler *sched) : f_(f) {
-      GRPC_CLOSURE_INIT(this, Execute, this, sched);
-    }
-    F f_;
-    static void Execute(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-      static_cast<C *>(arg)->f_(exec_ctx, error);
-    }
-  };
-  return std::unique_ptr<Closure>(new C(f, sched));
-}
-
-template <class F>
-grpc_closure *MakeOnceClosure(
-    F f, grpc_closure_scheduler *sched = grpc_schedule_on_exec_ctx) {
-  struct C : public grpc_closure {
-    C(const F &f) : f_(f) {}
-    F f_;
-    static void Execute(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
-      static_cast<C *>(arg)->f_(exec_ctx, error);
-      delete static_cast<C *>(arg);
-    }
-  };
-  auto *c = new C{f};
-  return GRPC_CLOSURE_INIT(c, C::Execute, c, sched);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // Benchmarks
 //
@@ -246,11 +263,18 @@ static void BM_StreamCreateDestroy(benchmark::State &state) {
   TrackCounters track_counters;
   Fixture f(grpc::ChannelArguments(), true);
   Stream s(&f);
+  grpc_transport_stream_op_batch op;
+  grpc_transport_stream_op_batch_payload op_payload;
+  memset(&op, 0, sizeof(op));
+  op.cancel_stream = true;
+  op.payload = &op_payload;
+  op_payload.cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
   std::unique_ptr<Closure> next =
       MakeClosure([&](grpc_exec_ctx *exec_ctx, grpc_error *error) {
         if (!state.KeepRunning()) return;
         s.Init(state);
-        s.DestroyThen(next.get());
+        s.Op(exec_ctx, &op);
+        s.DestroyThen(exec_ctx, next.get());
       });
   GRPC_CLOSURE_RUN(f.exec_ctx(), next.get(), GRPC_ERROR_NONE);
   f.FlushExecCtx();
@@ -286,6 +310,7 @@ static void BM_StreamCreateSendInitialMetadataDestroy(benchmark::State &state) {
   Stream s(&f);
   grpc_transport_stream_op_batch op;
   grpc_transport_stream_op_batch_payload op_payload;
+  memset(&op_payload, 0, sizeof(op_payload));
   std::unique_ptr<Closure> start;
   std::unique_ptr<Closure> done;
 
@@ -313,14 +338,14 @@ static void BM_StreamCreateSendInitialMetadataDestroy(benchmark::State &state) {
     op.on_complete = done.get();
     op.send_initial_metadata = true;
     op.payload->send_initial_metadata.send_initial_metadata = &b;
-    s.Op(&op);
+    s.Op(exec_ctx, &op);
   });
   done = MakeClosure([&](grpc_exec_ctx *exec_ctx, grpc_error *error) {
     reset_op();
     op.cancel_stream = true;
     op.payload->cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
-    s.Op(&op);
-    s.DestroyThen(start.get());
+    s.Op(exec_ctx, &op);
+    s.DestroyThen(exec_ctx, start.get());
   });
   GRPC_CLOSURE_SCHED(f.exec_ctx(), start.get(), GRPC_ERROR_NONE);
   f.FlushExecCtx();
@@ -337,6 +362,7 @@ static void BM_TransportEmptyOp(benchmark::State &state) {
   s.Init(state);
   grpc_transport_stream_op_batch op;
   grpc_transport_stream_op_batch_payload op_payload;
+  memset(&op_payload, 0, sizeof(op_payload));
   auto reset_op = [&]() {
     memset(&op, 0, sizeof(op));
     op.payload = &op_payload;
@@ -346,24 +372,31 @@ static void BM_TransportEmptyOp(benchmark::State &state) {
         if (!state.KeepRunning()) return;
         reset_op();
         op.on_complete = c.get();
-        s.Op(&op);
+        s.Op(exec_ctx, &op);
       });
   GRPC_CLOSURE_SCHED(f.exec_ctx(), c.get(), GRPC_ERROR_NONE);
   f.FlushExecCtx();
-  s.DestroyThen(
-      MakeOnceClosure([](grpc_exec_ctx *exec_ctx, grpc_error *error) {}));
+  reset_op();
+  op.cancel_stream = true;
+  op_payload.cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
+  s.Op(f.exec_ctx(), &op);
+  s.DestroyThen(f.exec_ctx(), MakeOnceClosure([](grpc_exec_ctx *exec_ctx,
+                                                 grpc_error *error) {}));
   f.FlushExecCtx();
   track_counters.Finish(state);
 }
 BENCHMARK(BM_TransportEmptyOp);
 
+std::vector<std::unique_ptr<gpr_event>> done_events;
+
 static void BM_TransportStreamSend(benchmark::State &state) {
   TrackCounters track_counters;
   Fixture f(grpc::ChannelArguments(), true);
-  Stream s(&f);
-  s.Init(state);
+  auto s = std::unique_ptr<Stream>(new Stream(&f));
+  s->Init(state);
   grpc_transport_stream_op_batch op;
   grpc_transport_stream_op_batch_payload op_payload;
+  memset(&op_payload, 0, sizeof(op_payload));
   auto reset_op = [&]() {
     memset(&op, 0, sizeof(op));
     op.payload = &op_payload;
@@ -387,11 +420,17 @@ static void BM_TransportStreamSend(benchmark::State &state) {
         grpc_metadata_batch_add_tail(f.exec_ctx(), &b, &storage[i], elems[i])));
   }
 
+  gpr_event *bm_done = new gpr_event;
+  gpr_event_init(bm_done);
+
   std::unique_ptr<Closure> c =
       MakeClosure([&](grpc_exec_ctx *exec_ctx, grpc_error *error) {
-        if (!state.KeepRunning()) return;
+        if (!state.KeepRunning()) {
+          gpr_event_set(bm_done, (void *)1);
+          return;
+        }
         // force outgoing window to be yuge
-        s.chttp2_stream()->flow_control.remote_window_delta =
+        s->chttp2_stream()->flow_control.remote_window_delta =
             1024 * 1024 * 1024;
         f.chttp2_transport()->flow_control.remote_window = 1024 * 1024 * 1024;
         grpc_slice_buffer_stream_init(&send_stream, &send_buffer, 0);
@@ -399,23 +438,27 @@ static void BM_TransportStreamSend(benchmark::State &state) {
         op.on_complete = c.get();
         op.send_message = true;
         op.payload->send_message.send_message = &send_stream.base;
-        s.Op(&op);
+        s->Op(exec_ctx, &op);
       });
 
   reset_op();
   op.send_initial_metadata = true;
   op.payload->send_initial_metadata.send_initial_metadata = &b;
   op.on_complete = c.get();
-  s.Op(&op);
+  s->Op(f.exec_ctx(), &op);
 
   f.FlushExecCtx();
+  gpr_event_wait(bm_done, gpr_inf_future(GPR_CLOCK_REALTIME));
+  done_events.emplace_back(bm_done);
+
   reset_op();
   op.cancel_stream = true;
   op.payload->cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
-  s.Op(&op);
-  s.DestroyThen(
-      MakeOnceClosure([](grpc_exec_ctx *exec_ctx, grpc_error *error) {}));
+  s->Op(f.exec_ctx(), &op);
+  s->DestroyThen(f.exec_ctx(), MakeOnceClosure([](grpc_exec_ctx *exec_ctx,
+                                                  grpc_error *error) {}));
   f.FlushExecCtx();
+  s.reset();
   track_counters.Finish(state);
   grpc_metadata_batch_destroy(f.exec_ctx(), &b);
   grpc_slice_buffer_destroy(&send_buffer);
@@ -485,6 +528,7 @@ static void BM_TransportStreamRecv(benchmark::State &state) {
   Stream s(&f);
   s.Init(state);
   grpc_transport_stream_op_batch_payload op_payload;
+  memset(&op_payload, 0, sizeof(op_payload));
   grpc_transport_stream_op_batch op;
   grpc_byte_stream *recv_stream;
   grpc_slice incoming_data = CreateIncomingDataSlice(state.range(0), 16384);
@@ -531,7 +575,7 @@ static void BM_TransportStreamRecv(benchmark::State &state) {
     op.recv_message = true;
     op.payload->recv_message.recv_message = &recv_stream;
     op.payload->recv_message.recv_message_ready = drain_start.get();
-    s.Op(&op);
+    s.Op(exec_ctx, &op);
     f.PushInput(grpc_slice_ref(incoming_data));
   });
 
@@ -574,7 +618,7 @@ static void BM_TransportStreamRecv(benchmark::State &state) {
   op.payload->recv_initial_metadata.recv_initial_metadata_ready =
       do_nothing.get();
   op.on_complete = c.get();
-  s.Op(&op);
+  s.Op(f.exec_ctx(), &op);
   f.PushInput(SLICE_FROM_BUFFER(
       "\x00\x00\x00\x04\x00\x00\x00\x00\x00"
       // Generated using:
@@ -592,9 +636,9 @@ static void BM_TransportStreamRecv(benchmark::State &state) {
   reset_op();
   op.cancel_stream = true;
   op.payload->cancel_stream.cancel_error = GRPC_ERROR_CANCELLED;
-  s.Op(&op);
-  s.DestroyThen(
-      MakeOnceClosure([](grpc_exec_ctx *exec_ctx, grpc_error *error) {}));
+  s.Op(f.exec_ctx(), &op);
+  s.DestroyThen(f.exec_ctx(), MakeOnceClosure([](grpc_exec_ctx *exec_ctx,
+                                                 grpc_error *error) {}));
   f.FlushExecCtx();
   track_counters.Finish(state);
   grpc_metadata_batch_destroy(f.exec_ctx(), &b);
diff --git a/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc b/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
index f109fe6251..5c9405f583 100644
--- a/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
+++ b/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
@@ -38,6 +38,8 @@ struct grpc_pollset {
 namespace grpc {
 namespace testing {
 
+auto& force_library_initialization = Library::get();
+
 static void* g_tag = (void*)(intptr_t)10;  // Some random number
 static grpc_completion_queue* g_cq;
 static grpc_event_engine_vtable g_vtable;
@@ -57,7 +59,8 @@ static void pollset_destroy(grpc_exec_ctx* exec_ctx, grpc_pollset* ps) {
   gpr_mu_destroy(&ps->mu);
 }
 
-static grpc_error* pollset_kick(grpc_pollset* p, grpc_pollset_worker* worker) {
+static grpc_error* pollset_kick(grpc_exec_ctx* exec_ctx, grpc_pollset* p,
+                                grpc_pollset_worker* worker) {
   return GRPC_ERROR_NONE;
 }
 
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
index 0712a40018..655e032faf 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
@@ -18,13 +18,7 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
-#include <benchmark/benchmark.h>
-#include <sstream>
-#include "src/core/lib/profiling/timers.h"
-#include "src/cpp/client/create_channel_internal.h"
-#include "src/proto/grpc/testing/echo.grpc.pb.h"
-#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
-#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+#include "test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h"
 
 namespace grpc {
 namespace testing {
@@ -33,365 +27,6 @@ namespace testing {
 auto& force_library_initialization = Library::get();
 
 /*******************************************************************************
- * BENCHMARKING KERNELS
- */
-
-static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
-
-// Repeatedly makes Streaming Bidi calls (exchanging a configurable number of
-// messages in each call) in a loop on a single channel
-//
-//  First parmeter (i.e state.range(0)):  Message size (in bytes) to use
-//  Second parameter (i.e state.range(1)): Number of ping pong messages.
-//      Note: One ping-pong means two messages (one from client to server and
-//      the other from server to client):
-template <class Fixture, class ClientContextMutator, class ServerContextMutator>
-static void BM_StreamingPingPong(benchmark::State& state) {
-  const int msg_size = state.range(0);
-  const int max_ping_pongs = state.range(1);
-
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  {
-    EchoResponse send_response;
-    EchoResponse recv_response;
-    EchoRequest send_request;
-    EchoRequest recv_request;
-
-    if (msg_size > 0) {
-      send_request.set_message(std::string(msg_size, 'a'));
-      send_response.set_message(std::string(msg_size, 'b'));
-    }
-
-    std::unique_ptr<EchoTestService::Stub> stub(
-        EchoTestService::NewStub(fixture->channel()));
-
-    while (state.KeepRunning()) {
-      ServerContext svr_ctx;
-      ServerContextMutator svr_ctx_mut(&svr_ctx);
-      ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
-      service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
-                                fixture->cq(), tag(0));
-
-      ClientContext cli_ctx;
-      ClientContextMutator cli_ctx_mut(&cli_ctx);
-      auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
-
-      // Establish async stream between client side and server side
-      void* t;
-      bool ok;
-      int need_tags = (1 << 0) | (1 << 1);
-      while (need_tags) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        GPR_ASSERT(ok);
-        int i = (int)(intptr_t)t;
-        GPR_ASSERT(need_tags & (1 << i));
-        need_tags &= ~(1 << i);
-      }
-
-      // Send 'max_ping_pongs' number of ping pong messages
-      int ping_pong_cnt = 0;
-      while (ping_pong_cnt < max_ping_pongs) {
-        request_rw->Write(send_request, tag(0));   // Start client send
-        response_rw.Read(&recv_request, tag(1));   // Start server recv
-        request_rw->Read(&recv_response, tag(2));  // Start client recv
-
-        need_tags = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3);
-        while (need_tags) {
-          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-          GPR_ASSERT(ok);
-          int i = (int)(intptr_t)t;
-
-          // If server recv is complete, start the server send operation
-          if (i == 1) {
-            response_rw.Write(send_response, tag(3));
-          }
-
-          GPR_ASSERT(need_tags & (1 << i));
-          need_tags &= ~(1 << i);
-        }
-
-        ping_pong_cnt++;
-      }
-
-      request_rw->WritesDone(tag(0));
-      response_rw.Finish(Status::OK, tag(1));
-
-      Status recv_status;
-      request_rw->Finish(&recv_status, tag(2));
-
-      need_tags = (1 << 0) | (1 << 1) | (1 << 2);
-      while (need_tags) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        int i = (int)(intptr_t)t;
-        GPR_ASSERT(need_tags & (1 << i));
-        need_tags &= ~(1 << i);
-      }
-
-      GPR_ASSERT(recv_status.ok());
-    }
-  }
-
-  fixture->Finish(state);
-  fixture.reset();
-  state.SetBytesProcessed(msg_size * state.iterations() * max_ping_pongs * 2);
-}
-
-// Repeatedly sends ping pong messages in a single streaming Bidi call in a loop
-//     First parmeter (i.e state.range(0)):  Message size (in bytes) to use
-template <class Fixture, class ClientContextMutator, class ServerContextMutator>
-static void BM_StreamingPingPongMsgs(benchmark::State& state) {
-  const int msg_size = state.range(0);
-
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  {
-    EchoResponse send_response;
-    EchoResponse recv_response;
-    EchoRequest send_request;
-    EchoRequest recv_request;
-
-    if (msg_size > 0) {
-      send_request.set_message(std::string(msg_size, 'a'));
-      send_response.set_message(std::string(msg_size, 'b'));
-    }
-
-    std::unique_ptr<EchoTestService::Stub> stub(
-        EchoTestService::NewStub(fixture->channel()));
-
-    ServerContext svr_ctx;
-    ServerContextMutator svr_ctx_mut(&svr_ctx);
-    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
-    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
-                              fixture->cq(), tag(0));
-
-    ClientContext cli_ctx;
-    ClientContextMutator cli_ctx_mut(&cli_ctx);
-    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
-
-    // Establish async stream between client side and server side
-    void* t;
-    bool ok;
-    int need_tags = (1 << 0) | (1 << 1);
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      GPR_ASSERT(ok);
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-
-    while (state.KeepRunning()) {
-      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
-      request_rw->Write(send_request, tag(0));   // Start client send
-      response_rw.Read(&recv_request, tag(1));   // Start server recv
-      request_rw->Read(&recv_response, tag(2));  // Start client recv
-
-      need_tags = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3);
-      while (need_tags) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        GPR_ASSERT(ok);
-        int i = (int)(intptr_t)t;
-
-        // If server recv is complete, start the server send operation
-        if (i == 1) {
-          response_rw.Write(send_response, tag(3));
-        }
-
-        GPR_ASSERT(need_tags & (1 << i));
-        need_tags &= ~(1 << i);
-      }
-    }
-
-    request_rw->WritesDone(tag(0));
-    response_rw.Finish(Status::OK, tag(1));
-    Status recv_status;
-    request_rw->Finish(&recv_status, tag(2));
-
-    need_tags = (1 << 0) | (1 << 1) | (1 << 2);
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-
-    GPR_ASSERT(recv_status.ok());
-  }
-
-  fixture->Finish(state);
-  fixture.reset();
-  state.SetBytesProcessed(msg_size * state.iterations() * 2);
-}
-
-// Repeatedly makes Streaming Bidi calls (exchanging a configurable number of
-// messages in each call) in a loop on a single channel. Different from
-// BM_StreamingPingPong we are using stream coalescing api, e.g. WriteLast,
-// WriteAndFinish, set_initial_metadata_corked. These apis aim at saving
-// sendmsg syscalls for streaming by coalescing 1. initial metadata with first
-// message; 2. final streaming message with trailing metadata.
-//
-//  First parmeter (i.e state.range(0)):  Message size (in bytes) to use
-//  Second parameter (i.e state.range(1)): Number of ping pong messages.
-//      Note: One ping-pong means two messages (one from client to server and
-//      the other from server to client):
-//  Third parameter (i.e state.range(2)): Switch between using WriteAndFinish
-//  API and WriteLast API for server.
-template <class Fixture, class ClientContextMutator, class ServerContextMutator>
-static void BM_StreamingPingPongWithCoalescingApi(benchmark::State& state) {
-  const int msg_size = state.range(0);
-  const int max_ping_pongs = state.range(1);
-  // This options is used to test out server API: WriteLast and WriteAndFinish
-  // respectively, since we can not use both of them on server side at the same
-  // time. Value 1 means we are testing out the WriteAndFinish API, and
-  // otherwise we are testing out the WriteLast API.
-  const int write_and_finish = state.range(2);
-
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  {
-    EchoResponse send_response;
-    EchoResponse recv_response;
-    EchoRequest send_request;
-    EchoRequest recv_request;
-
-    if (msg_size > 0) {
-      send_request.set_message(std::string(msg_size, 'a'));
-      send_response.set_message(std::string(msg_size, 'b'));
-    }
-
-    std::unique_ptr<EchoTestService::Stub> stub(
-        EchoTestService::NewStub(fixture->channel()));
-
-    while (state.KeepRunning()) {
-      ServerContext svr_ctx;
-      ServerContextMutator svr_ctx_mut(&svr_ctx);
-      ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
-      service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
-                                fixture->cq(), tag(0));
-
-      ClientContext cli_ctx;
-      ClientContextMutator cli_ctx_mut(&cli_ctx);
-      cli_ctx.set_initial_metadata_corked(true);
-      // tag:1 here will never comes up, since we are not performing any op due
-      // to initial metadata coalescing.
-      auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
-
-      void* t;
-      bool ok;
-      int need_tags;
-
-      // Send 'max_ping_pongs' number of ping pong messages
-      int ping_pong_cnt = 0;
-      while (ping_pong_cnt < max_ping_pongs) {
-        if (ping_pong_cnt == max_ping_pongs - 1) {
-          request_rw->WriteLast(send_request, WriteOptions(), tag(2));
-        } else {
-          request_rw->Write(send_request, tag(2));  // Start client send
-        }
-
-        need_tags = (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5);
-
-        if (ping_pong_cnt == 0) {
-          // wait for the server call structure (call_hook, etc.) to be
-          // initialized (async stream between client side and server side
-          // established). It is necessary when client init metadata is
-          // coalesced
-          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-          while ((int)(intptr_t)t != 0) {
-            // In some cases tag:2 comes before tag:0 (write tag comes out
-            // first), this while loop is to make sure get tag:0.
-            int i = (int)(intptr_t)t;
-            GPR_ASSERT(need_tags & (1 << i));
-            need_tags &= ~(1 << i);
-            GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-          }
-        }
-
-        response_rw.Read(&recv_request, tag(3));   // Start server recv
-        request_rw->Read(&recv_response, tag(4));  // Start client recv
-
-        while (need_tags) {
-          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-          GPR_ASSERT(ok);
-          int i = (int)(intptr_t)t;
-
-          // If server recv is complete, start the server send operation
-          if (i == 3) {
-            if (ping_pong_cnt == max_ping_pongs - 1) {
-              if (write_and_finish == 1) {
-                response_rw.WriteAndFinish(send_response, WriteOptions(),
-                                           Status::OK, tag(5));
-              } else {
-                response_rw.WriteLast(send_response, WriteOptions(), tag(5));
-                // WriteLast buffers the write, so neither server write op nor
-                // client read op will finish inside the while loop.
-                need_tags &= ~(1 << 4);
-                need_tags &= ~(1 << 5);
-              }
-            } else {
-              response_rw.Write(send_response, tag(5));
-            }
-          }
-
-          GPR_ASSERT(need_tags & (1 << i));
-          need_tags &= ~(1 << i);
-        }
-
-        ping_pong_cnt++;
-      }
-
-      if (max_ping_pongs == 0) {
-        need_tags = (1 << 6) | (1 << 7) | (1 << 8);
-      } else {
-        if (write_and_finish == 1) {
-          need_tags = (1 << 8);
-        } else {
-          // server's buffered write and the client's read of the buffered write
-          // tags should come up.
-          need_tags = (1 << 4) | (1 << 5) | (1 << 7) | (1 << 8);
-        }
-      }
-
-      // No message write or initial metadata write happened yet.
-      if (max_ping_pongs == 0) {
-        request_rw->WritesDone(tag(6));
-        // wait for server call data structure(call_hook, etc.) to be
-        // initialized, since initial metadata is corked.
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        while ((int)(intptr_t)t != 0) {
-          int i = (int)(intptr_t)t;
-          GPR_ASSERT(need_tags & (1 << i));
-          need_tags &= ~(1 << i);
-          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        }
-        response_rw.Finish(Status::OK, tag(7));
-      } else {
-        if (write_and_finish != 1) {
-          response_rw.Finish(Status::OK, tag(7));
-        }
-      }
-
-      Status recv_status;
-      request_rw->Finish(&recv_status, tag(8));
-
-      while (need_tags) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        int i = (int)(intptr_t)t;
-        GPR_ASSERT(need_tags & (1 << i));
-        need_tags &= ~(1 << i);
-      }
-
-      GPR_ASSERT(recv_status.ok());
-    }
-  }
-
-  fixture->Finish(state);
-  fixture.reset();
-  state.SetBytesProcessed(msg_size * state.iterations() * max_ping_pongs * 2);
-}
-
-/*******************************************************************************
  * CONFIGURATIONS
  */
 
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
index 6fbf9da0ad..c7ceacd320 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
@@ -18,157 +18,18 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
-#include <benchmark/benchmark.h>
-#include <sstream>
-#include "src/core/lib/profiling/timers.h"
-#include "src/cpp/client/create_channel_internal.h"
-#include "src/proto/grpc/testing/echo.grpc.pb.h"
-#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
-#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+#include "test/cpp/microbenchmarks/fullstack_streaming_pump.h"
 
 namespace grpc {
 namespace testing {
 
-// force library initialization
-auto& force_library_initialization = Library::get();
-
-/*******************************************************************************
- * BENCHMARKING KERNELS
- */
-
-static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
-
-template <class Fixture>
-static void BM_PumpStreamClientToServer(benchmark::State& state) {
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  {
-    EchoRequest send_request;
-    EchoRequest recv_request;
-    if (state.range(0) > 0) {
-      send_request.set_message(std::string(state.range(0), 'a'));
-    }
-    Status recv_status;
-    ServerContext svr_ctx;
-    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
-    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
-                              fixture->cq(), tag(0));
-    std::unique_ptr<EchoTestService::Stub> stub(
-        EchoTestService::NewStub(fixture->channel()));
-    ClientContext cli_ctx;
-    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
-    int need_tags = (1 << 0) | (1 << 1);
-    void* t;
-    bool ok;
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      GPR_ASSERT(ok);
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-    response_rw.Read(&recv_request, tag(0));
-    while (state.KeepRunning()) {
-      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
-      request_rw->Write(send_request, tag(1));
-      while (true) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        if (t == tag(0)) {
-          response_rw.Read(&recv_request, tag(0));
-        } else if (t == tag(1)) {
-          break;
-        } else {
-          GPR_ASSERT(false);
-        }
-      }
-    }
-    request_rw->WritesDone(tag(1));
-    need_tags = (1 << 0) | (1 << 1);
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-    response_rw.Finish(Status::OK, tag(0));
-    Status final_status;
-    request_rw->Finish(&final_status, tag(1));
-    need_tags = (1 << 0) | (1 << 1);
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-    GPR_ASSERT(final_status.ok());
-  }
-  fixture->Finish(state);
-  fixture.reset();
-  state.SetBytesProcessed(state.range(0) * state.iterations());
-}
-
-template <class Fixture>
-static void BM_PumpStreamServerToClient(benchmark::State& state) {
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  {
-    EchoResponse send_response;
-    EchoResponse recv_response;
-    if (state.range(0) > 0) {
-      send_response.set_message(std::string(state.range(0), 'a'));
-    }
-    Status recv_status;
-    ServerContext svr_ctx;
-    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
-    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
-                              fixture->cq(), tag(0));
-    std::unique_ptr<EchoTestService::Stub> stub(
-        EchoTestService::NewStub(fixture->channel()));
-    ClientContext cli_ctx;
-    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
-    int need_tags = (1 << 0) | (1 << 1);
-    void* t;
-    bool ok;
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      GPR_ASSERT(ok);
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-    request_rw->Read(&recv_response, tag(0));
-    while (state.KeepRunning()) {
-      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
-      response_rw.Write(send_response, tag(1));
-      while (true) {
-        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-        if (t == tag(0)) {
-          request_rw->Read(&recv_response, tag(0));
-        } else if (t == tag(1)) {
-          break;
-        } else {
-          GPR_ASSERT(false);
-        }
-      }
-    }
-    response_rw.Finish(Status::OK, tag(1));
-    need_tags = (1 << 0) | (1 << 1);
-    while (need_tags) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      int i = (int)(intptr_t)t;
-      GPR_ASSERT(need_tags & (1 << i));
-      need_tags &= ~(1 << i);
-    }
-  }
-  fixture->Finish(state);
-  fixture.reset();
-  state.SetBytesProcessed(state.range(0) * state.iterations());
-}
-
 /*******************************************************************************
  * CONFIGURATIONS
  */
 
+// force library initialization
+auto& force_library_initialization = Library::get();
+
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, TCP)
     ->Range(0, 128 * 1024 * 1024);
 BENCHMARK_TEMPLATE(BM_PumpStreamClientToServer, UDS)
diff --git a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
index 5c44b9751f..2656566a50 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
@@ -22,10 +22,10 @@
 #include <gflags/gflags.h>
 #include <fstream>
 #include "src/core/lib/profiling/timers.h"
-#include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
 #include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+#include "test/cpp/util/test_config.h"
 extern "C" {
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/ext/transport/chttp2/transport/internal.h"
@@ -104,7 +104,7 @@ class TrickledCHTTP2 : public EndpointPairFixture {
             (double)state.iterations());
   }
 
-  void Log(int64_t iteration) {
+  void Log(int64_t iteration) GPR_ATTRIBUTE_NO_TSAN {
     auto now = gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), start_);
     grpc_chttp2_transport* client =
         reinterpret_cast<grpc_chttp2_transport*>(client_transport_);
@@ -192,7 +192,8 @@ class TrickledCHTTP2 : public EndpointPairFixture {
     return p;
   }
 
-  void UpdateStats(grpc_chttp2_transport* t, Stats* s, size_t backlog) {
+  void UpdateStats(grpc_chttp2_transport* t, Stats* s,
+                   size_t backlog) GPR_ATTRIBUTE_NO_TSAN {
     if (backlog == 0) {
       if (t->lists[GRPC_CHTTP2_LIST_STALLED_BY_STREAM].head != NULL) {
         s->streams_stalled_due_to_stream_flow_control++;
@@ -420,6 +421,6 @@ BENCHMARK(BM_PumpUnbalancedUnary_Trickle)->Apply(UnaryTrickleArgs);
 
 int main(int argc, char** argv) {
   ::benchmark::Initialize(&argc, argv);
-  ::google::ParseCommandLineFlags(&argc, &argv, false);
+  ::grpc::testing::InitTest(&argc, &argv, false);
   ::benchmark::RunSpecifiedBenchmarks();
 }
diff --git a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
index 9af751245f..fa41d114c0 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
@@ -18,13 +18,7 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
-#include <benchmark/benchmark.h>
-#include <sstream>
-#include "src/core/lib/profiling/timers.h"
-#include "src/cpp/client/create_channel_internal.h"
-#include "src/proto/grpc/testing/echo.grpc.pb.h"
-#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
-#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+#include "test/cpp/microbenchmarks/fullstack_unary_ping_pong.h"
 
 namespace grpc {
 namespace testing {
@@ -33,85 +27,6 @@ namespace testing {
 auto& force_library_initialization = Library::get();
 
 /*******************************************************************************
- * BENCHMARKING KERNELS
- */
-
-static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
-
-template <class Fixture, class ClientContextMutator, class ServerContextMutator>
-static void BM_UnaryPingPong(benchmark::State& state) {
-  EchoTestService::AsyncService service;
-  std::unique_ptr<Fixture> fixture(new Fixture(&service));
-  EchoRequest send_request;
-  EchoResponse send_response;
-  EchoResponse recv_response;
-  if (state.range(0) > 0) {
-    send_request.set_message(std::string(state.range(0), 'a'));
-  }
-  if (state.range(1) > 0) {
-    send_response.set_message(std::string(state.range(1), 'a'));
-  }
-  Status recv_status;
-  struct ServerEnv {
-    ServerContext ctx;
-    EchoRequest recv_request;
-    grpc::ServerAsyncResponseWriter<EchoResponse> response_writer;
-    ServerEnv() : response_writer(&ctx) {}
-  };
-  uint8_t server_env_buffer[2 * sizeof(ServerEnv)];
-  ServerEnv* server_env[2] = {
-      reinterpret_cast<ServerEnv*>(server_env_buffer),
-      reinterpret_cast<ServerEnv*>(server_env_buffer + sizeof(ServerEnv))};
-  new (server_env[0]) ServerEnv;
-  new (server_env[1]) ServerEnv;
-  service.RequestEcho(&server_env[0]->ctx, &server_env[0]->recv_request,
-                      &server_env[0]->response_writer, fixture->cq(),
-                      fixture->cq(), tag(0));
-  service.RequestEcho(&server_env[1]->ctx, &server_env[1]->recv_request,
-                      &server_env[1]->response_writer, fixture->cq(),
-                      fixture->cq(), tag(1));
-  std::unique_ptr<EchoTestService::Stub> stub(
-      EchoTestService::NewStub(fixture->channel()));
-  while (state.KeepRunning()) {
-    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
-    recv_response.Clear();
-    ClientContext cli_ctx;
-    ClientContextMutator cli_ctx_mut(&cli_ctx);
-    std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
-        stub->AsyncEcho(&cli_ctx, send_request, fixture->cq()));
-    void* t;
-    bool ok;
-    GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-    GPR_ASSERT(ok);
-    GPR_ASSERT(t == tag(0) || t == tag(1));
-    intptr_t slot = reinterpret_cast<intptr_t>(t);
-    ServerEnv* senv = server_env[slot];
-    ServerContextMutator svr_ctx_mut(&senv->ctx);
-    senv->response_writer.Finish(send_response, Status::OK, tag(3));
-    response_reader->Finish(&recv_response, &recv_status, tag(4));
-    for (int i = (1 << 3) | (1 << 4); i != 0;) {
-      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
-      GPR_ASSERT(ok);
-      int tagnum = (int)reinterpret_cast<intptr_t>(t);
-      GPR_ASSERT(i & (1 << tagnum));
-      i -= 1 << tagnum;
-    }
-    GPR_ASSERT(recv_status.ok());
-
-    senv->~ServerEnv();
-    senv = new (senv) ServerEnv();
-    service.RequestEcho(&senv->ctx, &senv->recv_request, &senv->response_writer,
-                        fixture->cq(), fixture->cq(), tag(slot));
-  }
-  fixture->Finish(state);
-  fixture.reset();
-  server_env[0]->~ServerEnv();
-  server_env[1]->~ServerEnv();
-  state.SetBytesProcessed(state.range(0) * state.iterations() +
-                          state.range(1) * state.iterations());
-}
-
-/*******************************************************************************
  * CONFIGURATIONS
  */
 
diff --git a/test/cpp/microbenchmarks/fullstack_fixtures.h b/test/cpp/microbenchmarks/fullstack_fixtures.h
index 5477b860b4..ecd28c3f8a 100644
--- a/test/cpp/microbenchmarks/fullstack_fixtures.h
+++ b/test/cpp/microbenchmarks/fullstack_fixtures.h
@@ -41,6 +41,7 @@ extern "C" {
 #include "test/core/util/port.h"
 }
 
+#include "src/cpp/client/create_channel_internal.h"
 #include "test/cpp/microbenchmarks/helpers.h"
 
 namespace grpc {
diff --git a/test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h b/test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h
new file mode 100644
index 0000000000..6df044f344
--- /dev/null
+++ b/test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h
@@ -0,0 +1,395 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Benchmark gRPC end2end in various configurations */
+
+#ifndef TEST_CPP_MICROBENCHMARKS_FULLSTACK_STREAMING_PING_PONG_H
+#define TEST_CPP_MICROBENCHMARKS_FULLSTACK_STREAMING_PING_PONG_H
+
+#include <benchmark/benchmark.h>
+#include <sstream>
+#include "src/core/lib/profiling/timers.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
+#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+
+namespace grpc {
+namespace testing {
+
+/*******************************************************************************
+ * BENCHMARKING KERNELS
+ */
+
+static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
+
+// Repeatedly makes Streaming Bidi calls (exchanging a configurable number of
+// messages in each call) in a loop on a single channel
+//
+//  First parmeter (i.e state.range(0)):  Message size (in bytes) to use
+//  Second parameter (i.e state.range(1)): Number of ping pong messages.
+//      Note: One ping-pong means two messages (one from client to server and
+//      the other from server to client):
+template <class Fixture, class ClientContextMutator, class ServerContextMutator>
+static void BM_StreamingPingPong(benchmark::State& state) {
+  const int msg_size = state.range(0);
+  const int max_ping_pongs = state.range(1);
+
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    EchoRequest send_request;
+    EchoRequest recv_request;
+
+    if (msg_size > 0) {
+      send_request.set_message(std::string(msg_size, 'a'));
+      send_response.set_message(std::string(msg_size, 'b'));
+    }
+
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+
+    while (state.KeepRunning()) {
+      ServerContext svr_ctx;
+      ServerContextMutator svr_ctx_mut(&svr_ctx);
+      ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+      service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                                fixture->cq(), tag(0));
+
+      ClientContext cli_ctx;
+      ClientContextMutator cli_ctx_mut(&cli_ctx);
+      auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+
+      // Establish async stream between client side and server side
+      void* t;
+      bool ok;
+      int need_tags = (1 << 0) | (1 << 1);
+      while (need_tags) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        GPR_ASSERT(ok);
+        int i = (int)(intptr_t)t;
+        GPR_ASSERT(need_tags & (1 << i));
+        need_tags &= ~(1 << i);
+      }
+
+      // Send 'max_ping_pongs' number of ping pong messages
+      int ping_pong_cnt = 0;
+      while (ping_pong_cnt < max_ping_pongs) {
+        request_rw->Write(send_request, tag(0));   // Start client send
+        response_rw.Read(&recv_request, tag(1));   // Start server recv
+        request_rw->Read(&recv_response, tag(2));  // Start client recv
+
+        need_tags = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3);
+        while (need_tags) {
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          GPR_ASSERT(ok);
+          int i = (int)(intptr_t)t;
+
+          // If server recv is complete, start the server send operation
+          if (i == 1) {
+            response_rw.Write(send_response, tag(3));
+          }
+
+          GPR_ASSERT(need_tags & (1 << i));
+          need_tags &= ~(1 << i);
+        }
+
+        ping_pong_cnt++;
+      }
+
+      request_rw->WritesDone(tag(0));
+      response_rw.Finish(Status::OK, tag(1));
+
+      Status recv_status;
+      request_rw->Finish(&recv_status, tag(2));
+
+      need_tags = (1 << 0) | (1 << 1) | (1 << 2);
+      while (need_tags) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        int i = (int)(intptr_t)t;
+        GPR_ASSERT(need_tags & (1 << i));
+        need_tags &= ~(1 << i);
+      }
+
+      GPR_ASSERT(recv_status.ok());
+    }
+  }
+
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(msg_size * state.iterations() * max_ping_pongs * 2);
+}
+
+// Repeatedly sends ping pong messages in a single streaming Bidi call in a loop
+//     First parmeter (i.e state.range(0)):  Message size (in bytes) to use
+template <class Fixture, class ClientContextMutator, class ServerContextMutator>
+static void BM_StreamingPingPongMsgs(benchmark::State& state) {
+  const int msg_size = state.range(0);
+
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    EchoRequest send_request;
+    EchoRequest recv_request;
+
+    if (msg_size > 0) {
+      send_request.set_message(std::string(msg_size, 'a'));
+      send_response.set_message(std::string(msg_size, 'b'));
+    }
+
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+
+    ServerContext svr_ctx;
+    ServerContextMutator svr_ctx_mut(&svr_ctx);
+    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                              fixture->cq(), tag(0));
+
+    ClientContext cli_ctx;
+    ClientContextMutator cli_ctx_mut(&cli_ctx);
+    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+
+    // Establish async stream between client side and server side
+    void* t;
+    bool ok;
+    int need_tags = (1 << 0) | (1 << 1);
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      GPR_ASSERT(ok);
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+
+    while (state.KeepRunning()) {
+      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+      request_rw->Write(send_request, tag(0));   // Start client send
+      response_rw.Read(&recv_request, tag(1));   // Start server recv
+      request_rw->Read(&recv_response, tag(2));  // Start client recv
+
+      need_tags = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3);
+      while (need_tags) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        GPR_ASSERT(ok);
+        int i = (int)(intptr_t)t;
+
+        // If server recv is complete, start the server send operation
+        if (i == 1) {
+          response_rw.Write(send_response, tag(3));
+        }
+
+        GPR_ASSERT(need_tags & (1 << i));
+        need_tags &= ~(1 << i);
+      }
+    }
+
+    request_rw->WritesDone(tag(0));
+    response_rw.Finish(Status::OK, tag(1));
+    Status recv_status;
+    request_rw->Finish(&recv_status, tag(2));
+
+    need_tags = (1 << 0) | (1 << 1) | (1 << 2);
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+
+    GPR_ASSERT(recv_status.ok());
+  }
+
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(msg_size * state.iterations() * 2);
+}
+
+// Repeatedly makes Streaming Bidi calls (exchanging a configurable number of
+// messages in each call) in a loop on a single channel. Different from
+// BM_StreamingPingPong we are using stream coalescing api, e.g. WriteLast,
+// WriteAndFinish, set_initial_metadata_corked. These apis aim at saving
+// sendmsg syscalls for streaming by coalescing 1. initial metadata with first
+// message; 2. final streaming message with trailing metadata.
+//
+//  First parmeter (i.e state.range(0)):  Message size (in bytes) to use
+//  Second parameter (i.e state.range(1)): Number of ping pong messages.
+//      Note: One ping-pong means two messages (one from client to server and
+//      the other from server to client):
+//  Third parameter (i.e state.range(2)): Switch between using WriteAndFinish
+//  API and WriteLast API for server.
+template <class Fixture, class ClientContextMutator, class ServerContextMutator>
+static void BM_StreamingPingPongWithCoalescingApi(benchmark::State& state) {
+  const int msg_size = state.range(0);
+  const int max_ping_pongs = state.range(1);
+  // This options is used to test out server API: WriteLast and WriteAndFinish
+  // respectively, since we can not use both of them on server side at the same
+  // time. Value 1 means we are testing out the WriteAndFinish API, and
+  // otherwise we are testing out the WriteLast API.
+  const int write_and_finish = state.range(2);
+
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    EchoRequest send_request;
+    EchoRequest recv_request;
+
+    if (msg_size > 0) {
+      send_request.set_message(std::string(msg_size, 'a'));
+      send_response.set_message(std::string(msg_size, 'b'));
+    }
+
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+
+    while (state.KeepRunning()) {
+      ServerContext svr_ctx;
+      ServerContextMutator svr_ctx_mut(&svr_ctx);
+      ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+      service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                                fixture->cq(), tag(0));
+
+      ClientContext cli_ctx;
+      ClientContextMutator cli_ctx_mut(&cli_ctx);
+      cli_ctx.set_initial_metadata_corked(true);
+      // tag:1 here will never comes up, since we are not performing any op due
+      // to initial metadata coalescing.
+      auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+
+      void* t;
+      bool ok;
+      int need_tags;
+
+      // Send 'max_ping_pongs' number of ping pong messages
+      int ping_pong_cnt = 0;
+      while (ping_pong_cnt < max_ping_pongs) {
+        if (ping_pong_cnt == max_ping_pongs - 1) {
+          request_rw->WriteLast(send_request, WriteOptions(), tag(2));
+        } else {
+          request_rw->Write(send_request, tag(2));  // Start client send
+        }
+
+        need_tags = (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5);
+
+        if (ping_pong_cnt == 0) {
+          // wait for the server call structure (call_hook, etc.) to be
+          // initialized (async stream between client side and server side
+          // established). It is necessary when client init metadata is
+          // coalesced
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          while ((int)(intptr_t)t != 0) {
+            // In some cases tag:2 comes before tag:0 (write tag comes out
+            // first), this while loop is to make sure get tag:0.
+            int i = (int)(intptr_t)t;
+            GPR_ASSERT(need_tags & (1 << i));
+            need_tags &= ~(1 << i);
+            GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          }
+        }
+
+        response_rw.Read(&recv_request, tag(3));   // Start server recv
+        request_rw->Read(&recv_response, tag(4));  // Start client recv
+
+        while (need_tags) {
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          GPR_ASSERT(ok);
+          int i = (int)(intptr_t)t;
+
+          // If server recv is complete, start the server send operation
+          if (i == 3) {
+            if (ping_pong_cnt == max_ping_pongs - 1) {
+              if (write_and_finish == 1) {
+                response_rw.WriteAndFinish(send_response, WriteOptions(),
+                                           Status::OK, tag(5));
+              } else {
+                response_rw.WriteLast(send_response, WriteOptions(), tag(5));
+                // WriteLast buffers the write, so neither server write op nor
+                // client read op will finish inside the while loop.
+                need_tags &= ~(1 << 4);
+                need_tags &= ~(1 << 5);
+              }
+            } else {
+              response_rw.Write(send_response, tag(5));
+            }
+          }
+
+          GPR_ASSERT(need_tags & (1 << i));
+          need_tags &= ~(1 << i);
+        }
+
+        ping_pong_cnt++;
+      }
+
+      if (max_ping_pongs == 0) {
+        need_tags = (1 << 6) | (1 << 7) | (1 << 8);
+      } else {
+        if (write_and_finish == 1) {
+          need_tags = (1 << 8);
+        } else {
+          // server's buffered write and the client's read of the buffered write
+          // tags should come up.
+          need_tags = (1 << 4) | (1 << 5) | (1 << 7) | (1 << 8);
+        }
+      }
+
+      // No message write or initial metadata write happened yet.
+      if (max_ping_pongs == 0) {
+        request_rw->WritesDone(tag(6));
+        // wait for server call data structure(call_hook, etc.) to be
+        // initialized, since initial metadata is corked.
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        while ((int)(intptr_t)t != 0) {
+          int i = (int)(intptr_t)t;
+          GPR_ASSERT(need_tags & (1 << i));
+          need_tags &= ~(1 << i);
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        }
+        response_rw.Finish(Status::OK, tag(7));
+      } else {
+        if (write_and_finish != 1) {
+          response_rw.Finish(Status::OK, tag(7));
+        }
+      }
+
+      Status recv_status;
+      request_rw->Finish(&recv_status, tag(8));
+
+      while (need_tags) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        int i = (int)(intptr_t)t;
+        GPR_ASSERT(need_tags & (1 << i));
+        need_tags &= ~(1 << i);
+      }
+
+      GPR_ASSERT(recv_status.ok());
+    }
+  }
+
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(msg_size * state.iterations() * max_ping_pongs * 2);
+}
+}  // namespace testing
+}  // namespace grpc
+
+#endif  // TEST_CPP_MICROBENCHMARKS_FULLSTACK_STREAMING_PING_PONG_H
diff --git a/test/cpp/microbenchmarks/fullstack_streaming_pump.h b/test/cpp/microbenchmarks/fullstack_streaming_pump.h
new file mode 100644
index 0000000000..9e826091ec
--- /dev/null
+++ b/test/cpp/microbenchmarks/fullstack_streaming_pump.h
@@ -0,0 +1,169 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Benchmark gRPC end2end in various configurations */
+
+#ifndef TEST_CPP_MICROBENCHMARKS_FULLSTACK_STREAMING_PUMP_H
+#define TEST_CPP_MICROBENCHMARKS_FULLSTACK_STREAMING_PUMP_H
+
+#include <benchmark/benchmark.h>
+#include <sstream>
+#include "src/core/lib/profiling/timers.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
+#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+
+namespace grpc {
+namespace testing {
+
+/*******************************************************************************
+ * BENCHMARKING KERNELS
+ */
+
+static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
+
+template <class Fixture>
+static void BM_PumpStreamClientToServer(benchmark::State& state) {
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoRequest send_request;
+    EchoRequest recv_request;
+    if (state.range(0) > 0) {
+      send_request.set_message(std::string(state.range(0), 'a'));
+    }
+    Status recv_status;
+    ServerContext svr_ctx;
+    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                              fixture->cq(), tag(0));
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+    ClientContext cli_ctx;
+    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+    int need_tags = (1 << 0) | (1 << 1);
+    void* t;
+    bool ok;
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      GPR_ASSERT(ok);
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+    response_rw.Read(&recv_request, tag(0));
+    while (state.KeepRunning()) {
+      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+      request_rw->Write(send_request, tag(1));
+      while (true) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        if (t == tag(0)) {
+          response_rw.Read(&recv_request, tag(0));
+        } else if (t == tag(1)) {
+          break;
+        } else {
+          GPR_ASSERT(false);
+        }
+      }
+    }
+    request_rw->WritesDone(tag(1));
+    need_tags = (1 << 0) | (1 << 1);
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+    response_rw.Finish(Status::OK, tag(0));
+    Status final_status;
+    request_rw->Finish(&final_status, tag(1));
+    need_tags = (1 << 0) | (1 << 1);
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+    GPR_ASSERT(final_status.ok());
+  }
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(state.range(0) * state.iterations());
+}
+
+template <class Fixture>
+static void BM_PumpStreamServerToClient(benchmark::State& state) {
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    if (state.range(0) > 0) {
+      send_response.set_message(std::string(state.range(0), 'a'));
+    }
+    Status recv_status;
+    ServerContext svr_ctx;
+    ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+    service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                              fixture->cq(), tag(0));
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+    ClientContext cli_ctx;
+    auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+    int need_tags = (1 << 0) | (1 << 1);
+    void* t;
+    bool ok;
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      GPR_ASSERT(ok);
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+    request_rw->Read(&recv_response, tag(0));
+    while (state.KeepRunning()) {
+      GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+      response_rw.Write(send_response, tag(1));
+      while (true) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        if (t == tag(0)) {
+          request_rw->Read(&recv_response, tag(0));
+        } else if (t == tag(1)) {
+          break;
+        } else {
+          GPR_ASSERT(false);
+        }
+      }
+    }
+    response_rw.Finish(Status::OK, tag(1));
+    need_tags = (1 << 0) | (1 << 1);
+    while (need_tags) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      int i = (int)(intptr_t)t;
+      GPR_ASSERT(need_tags & (1 << i));
+      need_tags &= ~(1 << i);
+    }
+  }
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(state.range(0) * state.iterations());
+}
+}  // namespace testing
+}  // namespace grpc
+
+#endif  // TEST_CPP_MICROBENCHMARKS_FULLSTACK_FIXTURES_H
diff --git a/test/cpp/microbenchmarks/fullstack_unary_ping_pong.h b/test/cpp/microbenchmarks/fullstack_unary_ping_pong.h
new file mode 100644
index 0000000000..d448938295
--- /dev/null
+++ b/test/cpp/microbenchmarks/fullstack_unary_ping_pong.h
@@ -0,0 +1,115 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Benchmark gRPC end2end in various configurations */
+
+#ifndef TEST_CPP_MICROBENCHMARKS_FULLSTACK_UNARY_PING_PONG_H
+#define TEST_CPP_MICROBENCHMARKS_FULLSTACK_UNARY_PING_PONG_H
+
+#include <benchmark/benchmark.h>
+#include <sstream>
+#include "src/core/lib/profiling/timers.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
+#include "test/cpp/microbenchmarks/fullstack_fixtures.h"
+
+namespace grpc {
+namespace testing {
+
+/*******************************************************************************
+ * BENCHMARKING KERNELS
+ */
+
+static void* tag(intptr_t x) { return reinterpret_cast<void*>(x); }
+
+template <class Fixture, class ClientContextMutator, class ServerContextMutator>
+static void BM_UnaryPingPong(benchmark::State& state) {
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  EchoRequest send_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  if (state.range(0) > 0) {
+    send_request.set_message(std::string(state.range(0), 'a'));
+  }
+  if (state.range(1) > 0) {
+    send_response.set_message(std::string(state.range(1), 'a'));
+  }
+  Status recv_status;
+  struct ServerEnv {
+    ServerContext ctx;
+    EchoRequest recv_request;
+    grpc::ServerAsyncResponseWriter<EchoResponse> response_writer;
+    ServerEnv() : response_writer(&ctx) {}
+  };
+  uint8_t server_env_buffer[2 * sizeof(ServerEnv)];
+  ServerEnv* server_env[2] = {
+      reinterpret_cast<ServerEnv*>(server_env_buffer),
+      reinterpret_cast<ServerEnv*>(server_env_buffer + sizeof(ServerEnv))};
+  new (server_env[0]) ServerEnv;
+  new (server_env[1]) ServerEnv;
+  service.RequestEcho(&server_env[0]->ctx, &server_env[0]->recv_request,
+                      &server_env[0]->response_writer, fixture->cq(),
+                      fixture->cq(), tag(0));
+  service.RequestEcho(&server_env[1]->ctx, &server_env[1]->recv_request,
+                      &server_env[1]->response_writer, fixture->cq(),
+                      fixture->cq(), tag(1));
+  std::unique_ptr<EchoTestService::Stub> stub(
+      EchoTestService::NewStub(fixture->channel()));
+  while (state.KeepRunning()) {
+    GPR_TIMER_SCOPE("BenchmarkCycle", 0);
+    recv_response.Clear();
+    ClientContext cli_ctx;
+    ClientContextMutator cli_ctx_mut(&cli_ctx);
+    std::unique_ptr<ClientAsyncResponseReader<EchoResponse>> response_reader(
+        stub->AsyncEcho(&cli_ctx, send_request, fixture->cq()));
+    void* t;
+    bool ok;
+    GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+    GPR_ASSERT(ok);
+    GPR_ASSERT(t == tag(0) || t == tag(1));
+    intptr_t slot = reinterpret_cast<intptr_t>(t);
+    ServerEnv* senv = server_env[slot];
+    ServerContextMutator svr_ctx_mut(&senv->ctx);
+    senv->response_writer.Finish(send_response, Status::OK, tag(3));
+    response_reader->Finish(&recv_response, &recv_status, tag(4));
+    for (int i = (1 << 3) | (1 << 4); i != 0;) {
+      GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+      GPR_ASSERT(ok);
+      int tagnum = (int)reinterpret_cast<intptr_t>(t);
+      GPR_ASSERT(i & (1 << tagnum));
+      i -= 1 << tagnum;
+    }
+    GPR_ASSERT(recv_status.ok());
+
+    senv->~ServerEnv();
+    senv = new (senv) ServerEnv();
+    service.RequestEcho(&senv->ctx, &senv->recv_request, &senv->response_writer,
+                        fixture->cq(), fixture->cq(), tag(slot));
+  }
+  fixture->Finish(state);
+  fixture.reset();
+  server_env[0]->~ServerEnv();
+  server_env[1]->~ServerEnv();
+  state.SetBytesProcessed(state.range(0) * state.iterations() +
+                          state.range(1) * state.iterations());
+}
+}  // namespace testing
+}  // namespace grpc
+
+#endif  // TEST_CPP_MICROBENCHMARKS_FULLSTACK_UNARY_PING_PONG_H
diff --git a/test/cpp/microbenchmarks/helpers.cc b/test/cpp/microbenchmarks/helpers.cc
index 0c10d6c4ce..b0caa48cd0 100644
--- a/test/cpp/microbenchmarks/helpers.cc
+++ b/test/cpp/microbenchmarks/helpers.cc
@@ -29,6 +29,20 @@ void TrackCounters::Finish(benchmark::State &state) {
 }
 
 void TrackCounters::AddToLabel(std::ostream &out, benchmark::State &state) {
+  grpc_stats_data stats_end;
+  grpc_stats_collect(&stats_end);
+  grpc_stats_data stats;
+  grpc_stats_diff(&stats_end, &stats_begin_, &stats);
+  for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    out << " " << grpc_stats_counter_name[i]
+        << "/iter:" << ((double)stats.counters[i] / (double)state.iterations());
+  }
+  for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    out << " " << grpc_stats_histogram_name[i] << "-median:"
+        << grpc_stats_histo_percentile(&stats, (grpc_stats_histograms)i, 50.0)
+        << " " << grpc_stats_histogram_name[i] << "-99p:"
+        << grpc_stats_histo_percentile(&stats, (grpc_stats_histograms)i, 99.0);
+  }
 #ifdef GPR_LOW_LEVEL_COUNTERS
   grpc_memory_counters counters_at_end = grpc_memory_counters_snapshot();
   out << " locks/iter:" << ((double)(gpr_atm_no_barrier_load(&gpr_mu_locks) -
diff --git a/test/cpp/microbenchmarks/helpers.h b/test/cpp/microbenchmarks/helpers.h
index c81d95a4ea..07dd611709 100644
--- a/test/cpp/microbenchmarks/helpers.h
+++ b/test/cpp/microbenchmarks/helpers.h
@@ -23,6 +23,7 @@
 
 extern "C" {
 #include <grpc/support/port_platform.h>
+#include "src/core/lib/debug/stats.h"
 #include "test/core/util/memory_counters.h"
 }
 
@@ -62,10 +63,12 @@ extern "C" gpr_atm gpr_now_call_count;
 
 class TrackCounters {
  public:
+  TrackCounters() { grpc_stats_collect(&stats_begin_); }
   virtual void Finish(benchmark::State& state);
   virtual void AddToLabel(std::ostream& out, benchmark::State& state);
 
  private:
+  grpc_stats_data stats_begin_;
 #ifdef GPR_LOW_LEVEL_COUNTERS
   const size_t mu_locks_at_start_ = gpr_atm_no_barrier_load(&gpr_mu_locks);
   const size_t atm_cas_at_start_ =
diff --git a/test/cpp/naming/BUILD b/test/cpp/naming/BUILD
new file mode 100644
index 0000000000..24c3d1a443
--- /dev/null
+++ b/test/cpp/naming/BUILD
@@ -0,0 +1,49 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(
+    default_visibility = ["//visibility:public"],
+    features = [
+        "-layering_check",
+        "-parse_headers",
+    ],
+)
+
+licenses(["notice"])  # Apache v2
+
+load("//bazel:grpc_build_system.bzl", "grpc_sh_binary", "grpc_py_binary")
+
+load(":generate_resolver_component_tests.bzl", "generate_resolver_component_tests")
+
+# Meant to be invoked only through the top-level shell script driver.
+grpc_sh_binary(
+    name = "resolver_component_tests_runner",
+    srcs = [
+        "resolver_component_tests_runner.sh",
+    ],
+)
+
+grpc_py_binary(
+  name = "test_dns_server",
+  srcs = ["test_dns_server.py"],
+  data = [
+      "resolver_test_record_groups.yaml",
+  ],
+  deps = [
+      "twisted",
+      "yaml",
+  ]
+)
+
+generate_resolver_component_tests()
diff --git a/test/cpp/naming/gen_build_yaml.py b/test/cpp/naming/gen_build_yaml.py
new file mode 100755
index 0000000000..3a51fef7a0
--- /dev/null
+++ b/test/cpp/naming/gen_build_yaml.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python2.7
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Generates the appropriate build.json data for all the naming tests."""
+
+
+import yaml
+import collections
+import hashlib
+import json
+
+_LOCAL_DNS_SERVER_ADDRESS = '127.0.0.1:15353'
+
+def _append_zone_name(name, zone_name):
+  return '%s.%s' % (name, zone_name)
+
+def _build_expected_addrs_cmd_arg(expected_addrs):
+  out = []
+  for addr in expected_addrs:
+    out.append('%s,%s' % (addr['address'], str(addr['is_balancer'])))
+  return ';'.join(out)
+
+def main():
+  resolver_component_data = ''
+  with open('test/cpp/naming/resolver_test_record_groups.yaml') as f:
+    resolver_component_data = yaml.load(f)
+
+  json = {
+      'resolver_component_test_cases': [
+          {
+              'target_name': _append_zone_name(test_case['record_to_resolve'],
+                                                 resolver_component_data['resolver_component_tests_common_zone_name']),
+              'expected_addrs': _build_expected_addrs_cmd_arg(test_case['expected_addrs']),
+              'expected_chosen_service_config': (test_case['expected_chosen_service_config'] or ''),
+              'expected_lb_policy': (test_case['expected_lb_policy'] or ''),
+          } for test_case in resolver_component_data['resolver_component_tests']
+      ],
+      'targets': [
+          {
+              'name': 'resolver_component_test' + unsecure_build_config_suffix,
+              'build': 'test',
+              'language': 'c++',
+              'gtest': False,
+              'run': False,
+              'src': ['test/cpp/naming/resolver_component_test.cc'],
+              'platforms': ['linux', 'posix', 'mac'],
+              'deps': [
+                  'grpc++_test_util' + unsecure_build_config_suffix,
+                  'grpc_test_util' + unsecure_build_config_suffix,
+                  'gpr_test_util',
+                  'grpc++' + unsecure_build_config_suffix,
+                  'grpc' + unsecure_build_config_suffix,
+                  'gpr',
+                  'grpc++_test_config',
+              ],
+          } for unsecure_build_config_suffix in ['_unsecure', '']
+      ] + [
+          {
+              'name': 'resolver_component_tests_runner_invoker' + unsecure_build_config_suffix,
+              'build': 'test',
+              'language': 'c++',
+              'gtest': False,
+              'run': True,
+              'src': ['test/cpp/naming/resolver_component_tests_runner_invoker.cc'],
+              'platforms': ['linux', 'posix', 'mac'],
+              'deps': [
+                  'grpc++_test_util',
+                  'grpc_test_util',
+                  'gpr_test_util',
+                  'grpc++',
+                  'grpc',
+                  'gpr',
+                  'grpc++_test_config',
+              ],
+              'args': [
+                  '--test_bin_name=resolver_component_test%s' % unsecure_build_config_suffix,
+                  '--running_under_bazel=false',
+              ],
+          } for unsecure_build_config_suffix in ['_unsecure', '']
+      ]
+  }
+
+  print(yaml.dump(json))
+
+if __name__ == '__main__':
+  main()
diff --git a/test/cpp/naming/generate_resolver_component_tests.bzl b/test/cpp/naming/generate_resolver_component_tests.bzl
new file mode 100755
index 0000000000..118d9452d9
--- /dev/null
+++ b/test/cpp/naming/generate_resolver_component_tests.bzl
@@ -0,0 +1,64 @@
+#!/usr/bin/env python2.7
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("//bazel:grpc_build_system.bzl", "grpc_sh_binary", "grpc_cc_test", "grpc_cc_binary")
+
+def generate_resolver_component_tests():
+  for unsecure_build_config_suffix in ['_unsecure', '']:
+    # meant to be invoked only through the top-level shell script driver
+    grpc_cc_binary(
+        name = "resolver_component_test%s" % unsecure_build_config_suffix,
+        testonly = 1,
+        srcs = [
+            "resolver_component_test.cc",
+        ],
+        external_deps = [
+            "gmock",
+        ],
+        deps = [
+            "//test/cpp/util:test_util%s" % unsecure_build_config_suffix,
+            "//test/core/util:grpc_test_util%s" % unsecure_build_config_suffix,
+            "//test/core/util:gpr_test_util",
+            "//:grpc++%s" % unsecure_build_config_suffix,
+            "//:grpc%s" % unsecure_build_config_suffix,
+            "//:gpr",
+            "//test/cpp/util:test_config",
+        ],
+    )
+    grpc_cc_test(
+        name = "resolver_component_tests_runner_invoker%s" % unsecure_build_config_suffix,
+        srcs = [
+            "resolver_component_tests_runner_invoker.cc",
+        ],
+        deps = [
+            "//test/cpp/util:test_util",
+            "//test/core/util:grpc_test_util",
+            "//test/core/util:gpr_test_util",
+            "//:grpc++",
+            "//:grpc",
+            "//:gpr",
+            "//test/cpp/util:test_config",
+        ],
+        data = [
+            ":resolver_component_tests_runner",
+            ":resolver_component_test%s" % unsecure_build_config_suffix,
+            ":test_dns_server",
+            "resolver_test_record_groups.yaml", # include the transitive dependency so that the dns sever py binary can locate this
+        ],
+        args = [
+            "--test_bin_name=resolver_component_test%s" % unsecure_build_config_suffix,
+            "--running_under_bazel=true",
+        ]
+    )
diff --git a/test/cpp/naming/resolver_component_test.cc b/test/cpp/naming/resolver_component_test.cc
new file mode 100644
index 0000000000..cc851ca9d5
--- /dev/null
+++ b/test/cpp/naming/resolver_component_test.cc
@@ -0,0 +1,326 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <string.h>
+
+#include <gflags/gflags.h>
+#include <gmock/gmock.h>
+#include <vector>
+
+#include "test/cpp/util/subprocess.h"
+#include "test/cpp/util/test_config.h"
+
+extern "C" {
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/ext/filters/client_channel/resolver_registry.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+}
+
+using std::vector;
+using grpc::SubProcess;
+using testing::UnorderedElementsAreArray;
+
+// Hack copied from "test/cpp/end2end/server_crash_test_client.cc"!
+// In some distros, gflags is in the namespace google, and in some others,
+// in gflags. This hack is enabling us to find both.
+namespace google {}
+namespace gflags {}
+using namespace google;
+using namespace gflags;
+
+DEFINE_string(target_name, "", "Target name to resolve.");
+DEFINE_string(expected_addrs, "",
+              "Comma-separated list of expected "
+              "'<ip0:port0>,<is_balancer0>;<ip1:port1>,<is_balancer1>;...' "
+              "addresses of "
+              "backend and/or balancers. 'is_balancer' should be bool, i.e. "
+              "true or false.");
+DEFINE_string(expected_chosen_service_config, "",
+              "Expected service config json string that gets chosen (no "
+              "whitespace). Empty for none.");
+DEFINE_string(
+    local_dns_server_address, "",
+    "Optional. This address is placed as the uri authority if present.");
+DEFINE_string(expected_lb_policy, "",
+              "Expected lb policy name that appears in resolver result channel "
+              "arg. Empty for none.");
+
+namespace {
+
+class GrpcLBAddress final {
+ public:
+  GrpcLBAddress(std::string address, bool is_balancer)
+      : is_balancer(is_balancer), address(address) {}
+
+  bool operator==(const GrpcLBAddress &other) const {
+    return this->is_balancer == other.is_balancer &&
+           this->address == other.address;
+  }
+
+  bool operator!=(const GrpcLBAddress &other) const {
+    return !(*this == other);
+  }
+
+  bool is_balancer;
+  std::string address;
+};
+
+vector<GrpcLBAddress> ParseExpectedAddrs(std::string expected_addrs) {
+  std::vector<GrpcLBAddress> out;
+  while (expected_addrs.size() != 0) {
+    // get the next <ip>,<port> (v4 or v6)
+    size_t next_comma = expected_addrs.find(",");
+    if (next_comma == std::string::npos) {
+      gpr_log(
+          GPR_ERROR,
+          "Missing ','. Expected_addrs arg should be a semi-colon-separated "
+          "list of "
+          "<ip-port>,<bool> pairs. Left-to-be-parsed arg is |%s|",
+          expected_addrs.c_str());
+      abort();
+    }
+    std::string next_addr = expected_addrs.substr(0, next_comma);
+    expected_addrs = expected_addrs.substr(next_comma + 1, std::string::npos);
+    // get the next is_balancer 'bool' associated with this address
+    size_t next_semicolon = expected_addrs.find(";");
+    bool is_balancer =
+        gpr_is_true(expected_addrs.substr(0, next_semicolon).c_str());
+    out.emplace_back(GrpcLBAddress(next_addr, is_balancer));
+    if (next_semicolon == std::string::npos) {
+      break;
+    }
+    expected_addrs =
+        expected_addrs.substr(next_semicolon + 1, std::string::npos);
+  }
+  if (out.size() == 0) {
+    gpr_log(GPR_ERROR,
+            "expected_addrs arg should be a comma-separated list of "
+            "<ip-port>,<bool> pairs");
+    abort();
+  }
+  return out;
+}
+
+gpr_timespec TestDeadline(void) {
+  return grpc_timeout_seconds_to_deadline(100);
+}
+
+struct ArgsStruct {
+  gpr_event ev;
+  gpr_atm done_atm;
+  gpr_mu *mu;
+  grpc_pollset *pollset;
+  grpc_pollset_set *pollset_set;
+  grpc_combiner *lock;
+  grpc_channel_args *channel_args;
+  vector<GrpcLBAddress> expected_addrs;
+  std::string expected_service_config_string;
+  std::string expected_lb_policy;
+};
+
+void ArgsInit(grpc_exec_ctx *exec_ctx, ArgsStruct *args) {
+  gpr_event_init(&args->ev);
+  args->pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
+  grpc_pollset_init(args->pollset, &args->mu);
+  args->pollset_set = grpc_pollset_set_create();
+  grpc_pollset_set_add_pollset(exec_ctx, args->pollset_set, args->pollset);
+  args->lock = grpc_combiner_create();
+  gpr_atm_rel_store(&args->done_atm, 0);
+  args->channel_args = NULL;
+}
+
+void DoNothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {}
+
+void ArgsFinish(grpc_exec_ctx *exec_ctx, ArgsStruct *args) {
+  GPR_ASSERT(gpr_event_wait(&args->ev, TestDeadline()));
+  grpc_pollset_set_del_pollset(exec_ctx, args->pollset_set, args->pollset);
+  grpc_pollset_set_destroy(exec_ctx, args->pollset_set);
+  grpc_closure DoNothing_cb;
+  GRPC_CLOSURE_INIT(&DoNothing_cb, DoNothing, NULL, grpc_schedule_on_exec_ctx);
+  grpc_pollset_shutdown(exec_ctx, args->pollset, &DoNothing_cb);
+  // exec_ctx needs to be flushed before calling grpc_pollset_destroy()
+  grpc_channel_args_destroy(exec_ctx, args->channel_args);
+  grpc_exec_ctx_flush(exec_ctx);
+  grpc_pollset_destroy(exec_ctx, args->pollset);
+  gpr_free(args->pollset);
+  GRPC_COMBINER_UNREF(exec_ctx, args->lock, NULL);
+}
+
+gpr_timespec NSecondDeadline(int seconds) {
+  return gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
+                      gpr_time_from_seconds(seconds, GPR_TIMESPAN));
+}
+
+void PollPollsetUntilRequestDone(ArgsStruct *args) {
+  gpr_timespec deadline = NSecondDeadline(10);
+  while (true) {
+    bool done = gpr_atm_acq_load(&args->done_atm) != 0;
+    if (done) {
+      break;
+    }
+    gpr_timespec time_left =
+        gpr_time_sub(deadline, gpr_now(GPR_CLOCK_REALTIME));
+    gpr_log(GPR_DEBUG, "done=%d, time_left=%" PRId64 ".%09d", done,
+            time_left.tv_sec, time_left.tv_nsec);
+    GPR_ASSERT(gpr_time_cmp(time_left, gpr_time_0(GPR_TIMESPAN)) >= 0);
+    grpc_pollset_worker *worker = NULL;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    gpr_mu_lock(args->mu);
+    GRPC_LOG_IF_ERROR(
+        "pollset_work",
+        grpc_pollset_work(&exec_ctx, args->pollset, &worker,
+                          gpr_now(GPR_CLOCK_REALTIME), NSecondDeadline(1)));
+    gpr_mu_unlock(args->mu);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  gpr_event_set(&args->ev, (void *)1);
+}
+
+void CheckServiceConfigResultLocked(grpc_channel_args *channel_args,
+                                    ArgsStruct *args) {
+  const grpc_arg *service_config_arg =
+      grpc_channel_args_find(channel_args, GRPC_ARG_SERVICE_CONFIG);
+  if (args->expected_service_config_string != "") {
+    GPR_ASSERT(service_config_arg != NULL);
+    GPR_ASSERT(service_config_arg->type == GRPC_ARG_STRING);
+    EXPECT_EQ(service_config_arg->value.string,
+              args->expected_service_config_string);
+  } else {
+    GPR_ASSERT(service_config_arg == NULL);
+  }
+}
+
+void CheckLBPolicyResultLocked(grpc_channel_args *channel_args,
+                               ArgsStruct *args) {
+  const grpc_arg *lb_policy_arg =
+      grpc_channel_args_find(channel_args, GRPC_ARG_LB_POLICY_NAME);
+  if (args->expected_lb_policy != "") {
+    GPR_ASSERT(lb_policy_arg != NULL);
+    GPR_ASSERT(lb_policy_arg->type == GRPC_ARG_STRING);
+    EXPECT_EQ(lb_policy_arg->value.string, args->expected_lb_policy);
+  } else {
+    GPR_ASSERT(lb_policy_arg == NULL);
+  }
+}
+
+void CheckResolverResultLocked(grpc_exec_ctx *exec_ctx, void *argsp,
+                               grpc_error *err) {
+  ArgsStruct *args = (ArgsStruct *)argsp;
+  grpc_channel_args *channel_args = args->channel_args;
+  const grpc_arg *channel_arg =
+      grpc_channel_args_find(channel_args, GRPC_ARG_LB_ADDRESSES);
+  GPR_ASSERT(channel_arg != NULL);
+  GPR_ASSERT(channel_arg->type == GRPC_ARG_POINTER);
+  grpc_lb_addresses *addresses =
+      (grpc_lb_addresses *)channel_arg->value.pointer.p;
+  gpr_log(GPR_INFO, "num addrs found: %" PRIdPTR ". expected %" PRIdPTR,
+          addresses->num_addresses, args->expected_addrs.size());
+  GPR_ASSERT(addresses->num_addresses == args->expected_addrs.size());
+  std::vector<GrpcLBAddress> found_lb_addrs;
+  for (size_t i = 0; i < addresses->num_addresses; i++) {
+    grpc_lb_address addr = addresses->addresses[i];
+    char *str;
+    grpc_sockaddr_to_string(&str, &addr.address, 1 /* normalize */);
+    gpr_log(GPR_INFO, "%s", str);
+    found_lb_addrs.emplace_back(
+        GrpcLBAddress(std::string(str), addr.is_balancer));
+    gpr_free(str);
+  }
+  if (args->expected_addrs.size() != found_lb_addrs.size()) {
+    gpr_log(GPR_DEBUG, "found lb addrs size is: %" PRIdPTR
+                       ". expected addrs size is %" PRIdPTR,
+            found_lb_addrs.size(), args->expected_addrs.size());
+    abort();
+  }
+  EXPECT_THAT(args->expected_addrs, UnorderedElementsAreArray(found_lb_addrs));
+  CheckServiceConfigResultLocked(channel_args, args);
+  if (args->expected_service_config_string == "") {
+    CheckLBPolicyResultLocked(channel_args, args);
+  }
+  gpr_atm_rel_store(&args->done_atm, 1);
+  gpr_mu_lock(args->mu);
+  GRPC_LOG_IF_ERROR("pollset_kick",
+                    grpc_pollset_kick(exec_ctx, args->pollset, NULL));
+  gpr_mu_unlock(args->mu);
+}
+
+TEST(ResolverComponentTest, TestResolvesRelevantRecords) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  ArgsStruct args;
+  ArgsInit(&exec_ctx, &args);
+  args.expected_addrs = ParseExpectedAddrs(FLAGS_expected_addrs);
+  args.expected_service_config_string = FLAGS_expected_chosen_service_config;
+  args.expected_lb_policy = FLAGS_expected_lb_policy;
+  // maybe build the address with an authority
+  char *whole_uri = NULL;
+  GPR_ASSERT(asprintf(&whole_uri, "dns://%s/%s",
+                      FLAGS_local_dns_server_address.c_str(),
+                      FLAGS_target_name.c_str()));
+  // create resolver and resolve
+  grpc_resolver *resolver = grpc_resolver_create(&exec_ctx, whole_uri, NULL,
+                                                 args.pollset_set, args.lock);
+  gpr_free(whole_uri);
+  grpc_closure on_resolver_result_changed;
+  GRPC_CLOSURE_INIT(&on_resolver_result_changed, CheckResolverResultLocked,
+                    (void *)&args, grpc_combiner_scheduler(args.lock));
+  grpc_resolver_next_locked(&exec_ctx, resolver, &args.channel_args,
+                            &on_resolver_result_changed);
+  grpc_exec_ctx_flush(&exec_ctx);
+  PollPollsetUntilRequestDone(&args);
+  GRPC_RESOLVER_UNREF(&exec_ctx, resolver, NULL);
+  ArgsFinish(&exec_ctx, &args);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+}  // namespace
+
+int main(int argc, char **argv) {
+  grpc_init();
+  grpc_test_init(argc, argv);
+  ::testing::InitGoogleTest(&argc, argv);
+  ParseCommandLineFlags(&argc, &argv, true);
+  if (FLAGS_target_name == "") {
+    gpr_log(GPR_ERROR, "Missing target_name param.");
+    abort();
+  }
+  if (FLAGS_local_dns_server_address != "") {
+    gpr_log(GPR_INFO, "Specifying authority in uris to: %s",
+            FLAGS_local_dns_server_address.c_str());
+  }
+  auto result = RUN_ALL_TESTS();
+  grpc_shutdown();
+  return result;
+}
diff --git a/test/cpp/naming/resolver_component_tests_runner.sh b/test/cpp/naming/resolver_component_tests_runner.sh
new file mode 100755
index 0000000000..cf71c9dcf9
--- /dev/null
+++ b/test/cpp/naming/resolver_component_tests_runner.sh
@@ -0,0 +1,181 @@
+#!/bin/bash
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file is auto-generated
+
+set -ex
+
+# all command args required in this set order
+FLAGS_test_bin_path=`echo "$1" | grep '\--test_bin_path=' | cut -d "=" -f 2`
+FLAGS_dns_server_bin_path=`echo "$2" | grep '\--dns_server_bin_path=' | cut -d "=" -f 2`
+FLAGS_records_config_path=`echo "$3" | grep '\--records_config_path=' | cut -d "=" -f 2`
+FLAGS_test_dns_server_port=`echo "$4" | grep '\--test_dns_server_port=' | cut -d "=" -f 2`
+
+for cmd_arg in "$FLAGS_test_bin_path" "$FLAGS_dns_server_bin_path" "$FLAGS_records_config_path" "$FLAGS_test_dns_server_port"; do
+  if [[ "$cmd_arg" == "" ]]; then
+    echo "Missing a CMD arg" && exit 1
+  fi
+done
+
+if [[ "$GRPC_DNS_RESOLVER" != "" && "$GRPC_DNS_RESOLVER" != ares ]]; then
+  echo "This test only works under GRPC_DNS_RESOLVER=ares. Have GRPC_DNS_RESOLVER=$GRPC_DNS_RESOLVER" && exit 1
+fi
+export GRPC_DNS_RESOLVER=ares
+
+"$FLAGS_dns_server_bin_path" --records_config_path="$FLAGS_records_config_path" --port="$FLAGS_test_dns_server_port" 2>&1 > /dev/null &
+DNS_SERVER_PID=$!
+echo "Local DNS server started. PID: $DNS_SERVER_PID"
+
+# Health check local DNS server TCP and UDP ports
+for ((i=0;i<30;i++));
+do
+  echo "Retry health-check DNS query to local DNS server over tcp and udp"
+  RETRY=0
+  dig A health-check-local-dns-server-is-alive.resolver-tests.grpctestingexp. @localhost -p "$FLAGS_test_dns_server_port" +tries=1 +timeout=1 | grep '123.123.123.123' || RETRY=1
+  dig A health-check-local-dns-server-is-alive.resolver-tests.grpctestingexp. @localhost -p "$FLAGS_test_dns_server_port" +tries=1 +timeout=1 +tcp | grep '123.123.123.123' || RETRY=1
+  if [[ "$RETRY" == 0 ]]; then
+    break
+  fi;
+  sleep 0.1
+done
+
+if [[ $RETRY == 1 ]]; then
+  echo "FAILED TO START LOCAL DNS SERVER"
+  kill -SIGTERM $DNS_SERVER_PID
+  wait
+  exit 1
+fi
+
+function terminate_all {
+  echo "Received signal. Terminating $! and $DNS_SERVER_PID"
+  kill -SIGTERM $! || true
+  kill -SIGTERM $DNS_SERVER_PID || true
+  wait
+  exit 1
+}
+
+trap terminate_all SIGTERM SIGINT
+
+EXIT_CODE=0
+# TODO: this test should check for GCE residency and skip tests using _grpclb._tcp.* SRV records once GCE residency checks are made
+# in the resolver.
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv4-single-target.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:1234,True' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv4-multi-target.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.5:1234,True;1.2.3.6:1234,True;1.2.3.7:1234,True' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv6-single-target.resolver-tests.grpctestingexp.' \
+  --expected_addrs='[2607:f8b0:400a:801::1001]:1234,True' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv6-multi-target.resolver-tests.grpctestingexp.' \
+  --expected_addrs='[2607:f8b0:400a:801::1002]:1234,True;[2607:f8b0:400a:801::1003]:1234,True;[2607:f8b0:400a:801::1004]:1234,True' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv4-simple-service-config.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:1234,True' \
+  --expected_chosen_service_config='{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]}]}' \
+  --expected_lb_policy='round_robin' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-no-srv-simple-service-config.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"NoSrvSimpleService","waitForReady":true}]}]}' \
+  --expected_lb_policy='round_robin' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-no-config-for-cpp.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-cpp-config-has-zero-percentage.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-second-language-is-cpp.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"CppService","waitForReady":true}]}]}' \
+  --expected_lb_policy='round_robin' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-config-with-percentages.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"AlwaysPickedService","waitForReady":true}]}]}' \
+  --expected_lb_policy='round_robin' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv4-target-has-backend-and-balancer.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:1234,True;1.2.3.4:443,False' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='srv-ipv6-target-has-backend-and-balancer.resolver-tests.grpctestingexp.' \
+  --expected_addrs='[2607:f8b0:400a:801::1002]:1234,True;[2607:f8b0:400a:801::1002]:443,False' \
+  --expected_chosen_service_config='' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+$FLAGS_test_bin_path \
+  --target_name='ipv4-config-causing-fallback-to-tcp.resolver-tests.grpctestingexp.' \
+  --expected_addrs='1.2.3.4:443,False' \
+  --expected_chosen_service_config='{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooThree","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFour","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFive","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSix","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSeven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEight","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooNine","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTen","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEleven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]}]}' \
+  --expected_lb_policy='' \
+  --local_dns_server_address=127.0.0.1:$FLAGS_test_dns_server_port &
+wait $! || EXIT_CODE=1
+
+kill -SIGTERM $DNS_SERVER_PID || true
+wait
+exit $EXIT_CODE
diff --git a/test/cpp/naming/resolver_component_tests_runner_invoker.cc b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
new file mode 100644
index 0000000000..b14391284d
--- /dev/null
+++ b/test/cpp/naming/resolver_component_tests_runner_invoker.cc
@@ -0,0 +1,189 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <gflags/gflags.h>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "test/cpp/util/subprocess.h"
+#include "test/cpp/util/test_config.h"
+
+extern "C" {
+#include "src/core/lib/support/env.h"
+#include "test/core/util/port.h"
+}
+
+DEFINE_bool(
+    running_under_bazel, false,
+    "True if this test is running under bazel. "
+    "False indicates that this test is running under run_tests.py. "
+    "Child process test binaries are located differently based on this flag. ");
+
+DEFINE_string(test_bin_name, "",
+              "Name, without the preceding path, of the test binary");
+
+DEFINE_string(grpc_test_directory_relative_to_test_srcdir, "/__main__",
+              "This flag only applies if runner_under_bazel is true. This "
+              "flag is ignored if runner_under_bazel is false. "
+              "Directory of the <repo-root>/test directory relative to bazel's "
+              "TEST_SRCDIR environment variable");
+
+using grpc::SubProcess;
+
+static volatile sig_atomic_t abort_wait_for_child = 0;
+
+static void sighandler(int sig) { abort_wait_for_child = 1; }
+
+static void register_sighandler() {
+  struct sigaction act;
+  memset(&act, 0, sizeof(act));
+  act.sa_handler = sighandler;
+  sigaction(SIGINT, &act, NULL);
+  sigaction(SIGTERM, &act, NULL);
+}
+
+namespace {
+
+const int kTestTimeoutSeconds = 60 * 2;
+
+void RunSigHandlingThread(SubProcess *test_driver, gpr_mu *test_driver_mu,
+                          gpr_cv *test_driver_cv, int *test_driver_done) {
+  gpr_timespec overall_deadline =
+      gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                   gpr_time_from_seconds(kTestTimeoutSeconds, GPR_TIMESPAN));
+  while (true) {
+    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+    if (gpr_time_cmp(now, overall_deadline) > 0 || abort_wait_for_child) break;
+    gpr_mu_lock(test_driver_mu);
+    if (*test_driver_done) {
+      gpr_mu_unlock(test_driver_mu);
+      return;
+    }
+    gpr_timespec wait_deadline = gpr_time_add(
+        gpr_now(GPR_CLOCK_MONOTONIC), gpr_time_from_seconds(1, GPR_TIMESPAN));
+    gpr_cv_wait(test_driver_cv, test_driver_mu, wait_deadline);
+    gpr_mu_unlock(test_driver_mu);
+  }
+  gpr_log(GPR_DEBUG,
+          "Test timeout reached or received signal. Interrupting test driver "
+          "child process.");
+  test_driver->Interrupt();
+  return;
+}
+}
+
+namespace grpc {
+
+namespace testing {
+
+void InvokeResolverComponentTestsRunner(std::string test_runner_bin_path,
+                                        std::string test_bin_path,
+                                        std::string dns_server_bin_path,
+                                        std::string records_config_path) {
+  int test_dns_server_port = grpc_pick_unused_port_or_die();
+
+  SubProcess *test_driver = new SubProcess(
+      {test_runner_bin_path, "--test_bin_path=" + test_bin_path,
+       "--dns_server_bin_path=" + dns_server_bin_path,
+       "--records_config_path=" + records_config_path,
+       "--test_dns_server_port=" + std::to_string(test_dns_server_port)});
+  gpr_mu test_driver_mu;
+  gpr_mu_init(&test_driver_mu);
+  gpr_cv test_driver_cv;
+  gpr_cv_init(&test_driver_cv);
+  int test_driver_done = 0;
+  register_sighandler();
+  std::thread sig_handling_thread(RunSigHandlingThread, test_driver,
+                                  &test_driver_mu, &test_driver_cv,
+                                  &test_driver_done);
+  int status = test_driver->Join();
+  if (WIFEXITED(status)) {
+    if (WEXITSTATUS(status)) {
+      gpr_log(GPR_INFO,
+              "Resolver component test test-runner exited with code %d",
+              WEXITSTATUS(status));
+      abort();
+    }
+  } else if (WIFSIGNALED(status)) {
+    gpr_log(GPR_INFO,
+            "Resolver component test test-runner ended from signal %d",
+            WTERMSIG(status));
+    abort();
+  } else {
+    gpr_log(GPR_INFO,
+            "Resolver component test test-runner ended with unknown status %d",
+            status);
+    abort();
+  }
+  gpr_mu_lock(&test_driver_mu);
+  test_driver_done = 1;
+  gpr_cv_signal(&test_driver_cv);
+  gpr_mu_unlock(&test_driver_mu);
+  sig_handling_thread.join();
+  delete test_driver;
+  gpr_mu_destroy(&test_driver_mu);
+  gpr_cv_destroy(&test_driver_cv);
+}
+
+}  // namespace testing
+
+}  // namespace grpc
+
+int main(int argc, char **argv) {
+  grpc::testing::InitTest(&argc, &argv, true);
+  grpc_init();
+  GPR_ASSERT(FLAGS_test_bin_name != "");
+  std::string my_bin = argv[0];
+  if (FLAGS_running_under_bazel) {
+    GPR_ASSERT(FLAGS_grpc_test_directory_relative_to_test_srcdir != "");
+    // Use bazel's TEST_SRCDIR environment variable to locate the "test data"
+    // binaries.
+    std::string const bin_dir =
+        gpr_getenv("TEST_SRCDIR") +
+        FLAGS_grpc_test_directory_relative_to_test_srcdir +
+        std::string("/test/cpp/naming");
+    // Invoke bazel's executeable links to the .sh and .py scripts (don't use
+    // the .sh and .py suffixes) to make
+    // sure that we're using bazel's test environment.
+    grpc::testing::InvokeResolverComponentTestsRunner(
+        bin_dir + "/resolver_component_tests_runner",
+        bin_dir + "/" + FLAGS_test_bin_name, bin_dir + "/test_dns_server",
+        bin_dir + "/resolver_test_record_groups.yaml");
+  } else {
+    // Get the current binary's directory relative to repo root to invoke the
+    // correct build config (asan/tsan/dbg, etc.).
+    std::string const bin_dir = my_bin.substr(0, my_bin.rfind('/'));
+    // Invoke the .sh and .py scripts directly where they are in source code.
+    grpc::testing::InvokeResolverComponentTestsRunner(
+        "test/cpp/naming/resolver_component_tests_runner.sh",
+        bin_dir + "/" + FLAGS_test_bin_name,
+        "test/cpp/naming/test_dns_server.py",
+        "test/cpp/naming/resolver_test_record_groups.yaml");
+  }
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/cpp/naming/resolver_test_record_groups.yaml b/test/cpp/naming/resolver_test_record_groups.yaml
new file mode 100644
index 0000000000..33d774ca70
--- /dev/null
+++ b/test/cpp/naming/resolver_test_record_groups.yaml
@@ -0,0 +1,149 @@
+resolver_component_tests_common_zone_name: resolver-tests.grpctestingexp.
+resolver_component_tests:
+- expected_addrs:
+  - {address: '1.2.3.4:1234', is_balancer: true}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv4-single-target
+  records:
+    _grpclb._tcp.srv-ipv4-single-target:
+    - {TTL: '2100', data: 0 0 1234 ipv4-single-target, type: SRV}
+    ipv4-single-target:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+- expected_addrs:
+  - {address: '1.2.3.5:1234', is_balancer: true}
+  - {address: '1.2.3.6:1234', is_balancer: true}
+  - {address: '1.2.3.7:1234', is_balancer: true}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv4-multi-target
+  records:
+    _grpclb._tcp.srv-ipv4-multi-target:
+    - {TTL: '2100', data: 0 0 1234 ipv4-multi-target, type: SRV}
+    ipv4-multi-target:
+    - {TTL: '2100', data: 1.2.3.5, type: A}
+    - {TTL: '2100', data: 1.2.3.6, type: A}
+    - {TTL: '2100', data: 1.2.3.7, type: A}
+- expected_addrs:
+  - {address: '[2607:f8b0:400a:801::1001]:1234', is_balancer: true}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv6-single-target
+  records:
+    _grpclb._tcp.srv-ipv6-single-target:
+    - {TTL: '2100', data: 0 0 1234 ipv6-single-target, type: SRV}
+    ipv6-single-target:
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1001', type: AAAA}
+- expected_addrs:
+  - {address: '[2607:f8b0:400a:801::1002]:1234', is_balancer: true}
+  - {address: '[2607:f8b0:400a:801::1003]:1234', is_balancer: true}
+  - {address: '[2607:f8b0:400a:801::1004]:1234', is_balancer: true}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv6-multi-target
+  records:
+    _grpclb._tcp.srv-ipv6-multi-target:
+    - {TTL: '2100', data: 0 0 1234 ipv6-multi-target, type: SRV}
+    ipv6-multi-target:
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1002', type: AAAA}
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1003', type: AAAA}
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1004', type: AAAA}
+- expected_addrs:
+  - {address: '1.2.3.4:1234', is_balancer: true}
+  expected_chosen_service_config: '{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]}]}'
+  expected_lb_policy: round_robin
+  record_to_resolve: srv-ipv4-simple-service-config
+  records:
+    _grpclb._tcp.srv-ipv4-simple-service-config:
+    - {TTL: '2100', data: 0 0 1234 ipv4-simple-service-config, type: SRV}
+    ipv4-simple-service-config:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    srv-ipv4-simple-service-config:
+    - {TTL: '2100', data: 'grpc_config=[{"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: '{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"NoSrvSimpleService","waitForReady":true}]}]}'
+  expected_lb_policy: round_robin
+  record_to_resolve: ipv4-no-srv-simple-service-config
+  records:
+    ipv4-no-srv-simple-service-config:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"NoSrvSimpleService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: ipv4-no-config-for-cpp
+  records:
+    ipv4-no-config-for-cpp:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"clientLanguage":["python"],"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"PythonService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: ipv4-cpp-config-has-zero-percentage
+  records:
+    ipv4-cpp-config-has-zero-percentage:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"percentage":0,"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"CppService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: '{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"CppService","waitForReady":true}]}]}'
+  expected_lb_policy: round_robin
+  record_to_resolve: ipv4-second-language-is-cpp
+  records:
+    ipv4-second-language-is-cpp:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"clientLanguage":["go"],"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"GoService","waitForReady":true}]}]}},{"clientLanguage":["c++"],"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"CppService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: '{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"AlwaysPickedService","waitForReady":true}]}]}'
+  expected_lb_policy: round_robin
+  record_to_resolve: ipv4-config-with-percentages
+  records:
+    ipv4-config-with-percentages:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"percentage":0,"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"NeverPickedService","waitForReady":true}]}]}},{"percentage":100,"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"AlwaysPickedService","waitForReady":true}]}]}}]',
+      type: TXT}
+- expected_addrs:
+  - {address: '1.2.3.4:1234', is_balancer: true}
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv4-target-has-backend-and-balancer
+  records:
+    _grpclb._tcp.srv-ipv4-target-has-backend-and-balancer:
+    - {TTL: '2100', data: 0 0 1234 balancer-for-ipv4-has-backend-and-balancer, type: SRV}
+    balancer-for-ipv4-has-backend-and-balancer:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    srv-ipv4-target-has-backend-and-balancer:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+- expected_addrs:
+  - {address: '[2607:f8b0:400a:801::1002]:1234', is_balancer: true}
+  - {address: '[2607:f8b0:400a:801::1002]:443', is_balancer: false}
+  expected_chosen_service_config: null
+  expected_lb_policy: null
+  record_to_resolve: srv-ipv6-target-has-backend-and-balancer
+  records:
+    _grpclb._tcp.srv-ipv6-target-has-backend-and-balancer:
+    - {TTL: '2100', data: 0 0 1234 balancer-for-ipv6-has-backend-and-balancer, type: SRV}
+    balancer-for-ipv6-has-backend-and-balancer:
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1002', type: AAAA}
+    srv-ipv6-target-has-backend-and-balancer:
+    - {TTL: '2100', data: '2607:f8b0:400a:801::1002', type: AAAA}
+- expected_addrs:
+  - {address: '1.2.3.4:443', is_balancer: false}
+  expected_chosen_service_config: '{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooThree","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFour","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFive","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSix","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSeven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEight","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooNine","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTen","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEleven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]}]}'
+  expected_lb_policy: null
+  record_to_resolve: ipv4-config-causing-fallback-to-tcp
+  records:
+    ipv4-config-causing-fallback-to-tcp:
+    - {TTL: '2100', data: 1.2.3.4, type: A}
+    - {TTL: '2100', data: 'grpc_config=[{"serviceConfig":{"loadBalancingPolicy":"round_robin","methodConfig":[{"name":[{"method":"Foo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwo","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooThree","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFour","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooFive","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSix","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooSeven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEight","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooNine","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTen","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooEleven","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]},{"name":[{"method":"FooTwelve","service":"SimpleService","waitForReady":true}]}]}}]',
+      type: TXT}
diff --git a/test/cpp/naming/test_dns_server.py b/test/cpp/naming/test_dns_server.py
new file mode 100755
index 0000000000..9d4b89cffb
--- /dev/null
+++ b/test/cpp/naming/test_dns_server.py
@@ -0,0 +1,134 @@
+#!/usr/bin/env python2.7
+# Copyright 2015 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Starts a local DNS server for use in tests"""
+
+import argparse
+import sys
+import yaml
+import signal
+import os
+
+import twisted
+import twisted.internet
+import twisted.internet.reactor
+import twisted.internet.threads
+import twisted.internet.defer
+import twisted.internet.protocol
+import twisted.names
+import twisted.names.client
+import twisted.names.dns
+import twisted.names.server
+from twisted.names import client, server, common, authority, dns
+import argparse
+
+_SERVER_HEALTH_CHECK_RECORD_NAME = 'health-check-local-dns-server-is-alive.resolver-tests.grpctestingexp' # missing end '.' for twisted syntax
+_SERVER_HEALTH_CHECK_RECORD_DATA = '123.123.123.123'
+
+class NoFileAuthority(authority.FileAuthority):
+  def __init__(self, soa, records):
+    # skip FileAuthority
+    common.ResolverBase.__init__(self)
+    self.soa = soa
+    self.records = records
+
+def start_local_dns_server(args):
+  all_records = {}
+  def _push_record(name, r):
+    print('pushing record: |%s|' % name)
+    if all_records.get(name) is not None:
+      all_records[name].append(r)
+      return
+    all_records[name] = [r]
+
+  def _maybe_split_up_txt_data(name, txt_data, r_ttl):
+    start = 0
+    txt_data_list = []
+    while len(txt_data[start:]) > 0:
+      next_read = len(txt_data[start:])
+      if next_read > 255:
+        next_read = 255
+      txt_data_list.append(txt_data[start:start+next_read])
+      start += next_read
+    _push_record(name, dns.Record_TXT(*txt_data_list, ttl=r_ttl))
+
+  with open(args.records_config_path) as config:
+    test_records_config = yaml.load(config)
+  common_zone_name = test_records_config['resolver_component_tests_common_zone_name']
+  for group in test_records_config['resolver_component_tests']:
+    for name in group['records'].keys():
+      for record in group['records'][name]:
+        r_type = record['type']
+        r_data = record['data']
+        r_ttl = int(record['TTL'])
+        record_full_name = '%s.%s' % (name, common_zone_name)
+        assert record_full_name[-1] == '.'
+        record_full_name = record_full_name[:-1]
+        if r_type == 'A':
+          _push_record(record_full_name, dns.Record_A(r_data, ttl=r_ttl))
+        if r_type == 'AAAA':
+          _push_record(record_full_name, dns.Record_AAAA(r_data, ttl=r_ttl))
+        if r_type == 'SRV':
+          p, w, port, target = r_data.split(' ')
+          p = int(p)
+          w = int(w)
+          port = int(port)
+          target_full_name = '%s.%s' % (target, common_zone_name)
+          r_data = '%s %s %s %s' % (p, w, port, target_full_name)
+          _push_record(record_full_name, dns.Record_SRV(p, w, port, target_full_name, ttl=r_ttl))
+        if r_type == 'TXT':
+          _maybe_split_up_txt_data(record_full_name, r_data, r_ttl)
+  # Server health check record
+  _push_record(_SERVER_HEALTH_CHECK_RECORD_NAME, dns.Record_A(_SERVER_HEALTH_CHECK_RECORD_DATA, ttl=0))
+  soa_record = dns.Record_SOA(mname = common_zone_name)
+  test_domain_com = NoFileAuthority(
+    soa = (common_zone_name, soa_record),
+    records = all_records,
+  )
+  server = twisted.names.server.DNSServerFactory(
+      authorities=[test_domain_com], verbose=2)
+  server.noisy = 2
+  twisted.internet.reactor.listenTCP(args.port, server)
+  dns_proto = twisted.names.dns.DNSDatagramProtocol(server)
+  dns_proto.noisy = 2
+  twisted.internet.reactor.listenUDP(args.port, dns_proto)
+  print('starting local dns server on 127.0.0.1:%s' % args.port)
+  print('starting twisted.internet.reactor')
+  twisted.internet.reactor.suggestThreadPoolSize(1)
+  twisted.internet.reactor.run()
+
+def _quit_on_signal(signum, _frame):
+  print('Received SIGNAL %d. Quitting with exit code 0' % signum)
+  twisted.internet.reactor.stop()
+  sys.stdout.flush()
+  sys.exit(0)
+
+def main():
+  argp = argparse.ArgumentParser(description='Local DNS Server for resolver tests')
+  argp.add_argument('-p', '--port', default=None, type=int,
+                    help='Port for DNS server to listen on for TCP and UDP.')
+  argp.add_argument('-r', '--records_config_path', default=None, type=str,
+                    help=('Directory of resolver_test_record_groups.yaml file. '
+                          'Defauls to path needed when the test is invoked as part of run_tests.py.'))
+  args = argp.parse_args()
+  signal.signal(signal.SIGALRM, _quit_on_signal)
+  signal.signal(signal.SIGTERM, _quit_on_signal)
+  signal.signal(signal.SIGINT, _quit_on_signal)
+  # Prevent zombies. Tests that use this server are short-lived.
+  signal.alarm(2 * 60)
+  start_local_dns_server(args)
+
+if __name__ == '__main__':
+  main()
diff --git a/test/cpp/qps/BUILD b/test/cpp/qps/BUILD
index b3348b76fa..3352269517 100644
--- a/test/cpp/qps/BUILD
+++ b/test/cpp/qps/BUILD
@@ -14,14 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library", "grpc_cc_binary", "grpc_package")
 
-package(
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/qps")
 
 grpc_cc_library(
     name = "parse_json",
@@ -51,6 +46,7 @@ grpc_cc_library(
         ":usage_timer",
         "//:grpc",
         "//:grpc++",
+        "//:grpc++_core_stats",
         "//src/proto/grpc/testing:control_proto",
         "//src/proto/grpc/testing:payloads_proto",
         "//src/proto/grpc/testing:services_proto",
diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index 6c4d92e859..7fbaf63492 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -31,10 +31,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 
-#include "src/core/lib/surface/completion_queue.h"
 #include "src/proto/grpc/testing/payloads.pb.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 
+#include "src/cpp/util/core_stats.h"
 #include "test/cpp/qps/histogram.h"
 #include "test/cpp/qps/interarrival.h"
 #include "test/cpp/qps/usage_timer.h"
@@ -173,6 +173,9 @@ class Client {
       timer_result = timer_->Mark();
     }
 
+    grpc_stats_data core_stats;
+    grpc_stats_collect(&core_stats);
+
     ClientStats stats;
     latencies.FillProto(stats.mutable_latencies());
     for (StatusHistogram::const_iterator it = statuses.begin();
@@ -185,6 +188,7 @@ class Client {
     stats.set_time_system(timer_result.system);
     stats.set_time_user(timer_result.user);
     stats.set_cq_poll_count(poll_count);
+    CoreStatsToProto(core_stats, stats.mutable_core_stats());
     return stats;
   }
 
@@ -370,12 +374,11 @@ class ClientImpl : public Client {
   ClientImpl(const ClientConfig& config,
              std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
                  create_stub)
-      : cores_(gpr_cpu_num_cores()),
-        channels_(config.client_channels()),
-        create_stub_(create_stub) {
+      : cores_(gpr_cpu_num_cores()), create_stub_(create_stub) {
     for (int i = 0; i < config.client_channels(); i++) {
-      channels_[i].init(config.server_targets(i % config.server_targets_size()),
-                        config, create_stub_, i);
+      channels_.emplace_back(
+          config.server_targets(i % config.server_targets_size()), config,
+          create_stub_, i);
     }
 
     ClientRequestCreator<RequestType> create_req(&request_,
@@ -389,20 +392,11 @@ class ClientImpl : public Client {
 
   class ClientChannelInfo {
    public:
-    ClientChannelInfo() {}
-    ClientChannelInfo(const ClientChannelInfo& i) {
-      // The copy constructor is to satisfy old compilers
-      // that need it for using std::vector . It is only ever
-      // used for empty entries
-      GPR_ASSERT(!i.channel_ && !i.stub_);
-    }
-    void init(const grpc::string& target, const ClientConfig& config,
-              std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
-                  create_stub,
-              int shard) {
-      // We have to use a 2-phase init like this with a default
-      // constructor followed by an initializer function to make
-      // old compilers happy with using this in std::vector
+    ClientChannelInfo(
+        const grpc::string& target, const ClientConfig& config,
+        std::function<std::unique_ptr<StubType>(std::shared_ptr<Channel>)>
+            create_stub,
+        int shard) {
       ChannelArguments args;
       args.SetInt("shard_to_ensure_no_subchannel_merges", shard);
       set_channel_args(config, &args);
diff --git a/test/cpp/qps/client_async.cc b/test/cpp/qps/client_async.cc
index 265f174cc5..f5807da81e 100644
--- a/test/cpp/qps/client_async.cc
+++ b/test/cpp/qps/client_async.cc
@@ -34,6 +34,7 @@
 #include <grpc/support/cpu.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/surface/completion_queue.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 #include "test/cpp/qps/client.h"
 #include "test/cpp/qps/usage_timer.h"
@@ -55,11 +56,7 @@ class ClientRpcContext {
   }
 
   virtual void Start(CompletionQueue* cq, const ClientConfig& config) = 0;
-  void lock() { mu_.lock(); }
-  void unlock() { mu_.unlock(); }
-
- private:
-  std::mutex mu_;
+  virtual void TryCancel() = 0;
 };
 
 template <class RequestType, class ResponseType>
@@ -72,7 +69,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
           std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>(
               BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
               CompletionQueue*)>
-          start_req,
+          prepare_req,
       std::function<void(grpc::Status, ResponseType*, HistogramEntry*)> on_done)
       : context_(),
         stub_(stub),
@@ -82,7 +79,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
         next_state_(State::READY),
         callback_(on_done),
         next_issue_(next_issue),
-        start_req_(start_req) {}
+        prepare_req_(prepare_req) {}
   ~ClientRpcContextUnaryImpl() override {}
   void Start(CompletionQueue* cq, const ClientConfig& config) override {
     StartInternal(cq);
@@ -91,7 +88,8 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
     switch (next_state_) {
       case State::READY:
         start_ = UsageTimer::Now();
-        response_reader_ = start_req_(stub_, &context_, req_, cq_);
+        response_reader_ = prepare_req_(stub_, &context_, req_, cq_);
+        response_reader_->StartCall();
         next_state_ = State::RESP_DONE;
         response_reader_->Finish(&response_, &status_,
                                  ClientRpcContext::tag(this));
@@ -110,10 +108,10 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
   }
   void StartNewClone(CompletionQueue* cq) override {
     auto* clone = new ClientRpcContextUnaryImpl(stub_, req_, next_issue_,
-                                                start_req_, callback_);
-    std::lock_guard<ClientRpcContext> lclone(*clone);
+                                                prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -129,7 +127,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
   std::function<std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>(
       BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
       CompletionQueue*)>
-      start_req_;
+      prepare_req_;
   grpc::Status status_;
   double start_;
   std::unique_ptr<grpc::ClientAsyncResponseReader<ResponseType>>
@@ -140,13 +138,12 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
     if (!next_issue_) {  // ready to issue
       RunNextState(true, nullptr);
     } else {  // wait for the issue time
-      alarm_.reset(new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
+      alarm_.reset(new Alarm);
+      alarm_->Set(cq_, next_issue_(), ClientRpcContext::tag(this));
     }
   }
 };
 
-typedef std::forward_list<ClientRpcContext*> context_list;
-
 template <class StubType, class RequestType>
 class AsyncClient : public ClientImpl<StubType, RequestType> {
   // Specify which protected members we are using since there is no
@@ -250,29 +247,14 @@ class AsyncClient : public ClientImpl<StubType, RequestType> {
       // this thread isn't supposed to shut down
       std::lock_guard<std::mutex> l(shutdown_state_[thread_idx]->mutex);
       if (shutdown_state_[thread_idx]->shutdown) {
-        // We want to delete the context. However, it is possible that
-        // another thread that just initiated an action on this
-        // context still has its lock even though the action on the
-        // context has completed. To delay for that, just grab the
-        // lock for serialization. Take a new scope.
-        { std::lock_guard<ClientRpcContext> lctx(*ctx); }
+        ctx->TryCancel();
         delete ctx;
         return true;
       }
-      bool del = false;
-
-      // Create a new scope for a lock_guard'ed region
-      {
-        std::lock_guard<ClientRpcContext> lctx(*ctx);
-        if (!ctx->RunNextState(ok, entry)) {
-          // The RPC and callback are done, so clone the ctx
-          // and kickstart the new one
-          ctx->StartNewClone(cli_cqs_[cq_[thread_idx]].get());
-          // set the old version to delete
-          del = true;
-        }
-      }
-      if (del) {
+      if (!ctx->RunNextState(ok, entry)) {
+        // The RPC and callback are done, so clone the ctx
+        // and kickstart the new one
+        ctx->StartNewClone(cli_cqs_[cq_[thread_idx]].get());
         delete ctx;
       }
       return true;
@@ -309,15 +291,15 @@ class AsyncUnaryClient final
     entry->set_status(s.error_code());
   }
   static std::unique_ptr<grpc::ClientAsyncResponseReader<SimpleResponse>>
-  StartReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
-           const SimpleRequest& request, CompletionQueue* cq) {
-    return stub->AsyncUnaryCall(ctx, request, cq);
+  PrepareReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
+             const SimpleRequest& request, CompletionQueue* cq) {
+    return stub->PrepareAsyncUnaryCall(ctx, request, cq);
   };
   static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
                                     std::function<gpr_timespec()> next_issue,
                                     const SimpleRequest& req) {
     return new ClientRpcContextUnaryImpl<SimpleRequest, SimpleResponse>(
-        stub, req, next_issue, AsyncUnaryClient::StartReq,
+        stub, req, next_issue, AsyncUnaryClient::PrepareReq,
         AsyncUnaryClient::CheckDone);
   }
 };
@@ -330,9 +312,8 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
       std::function<gpr_timespec()> next_issue,
       std::function<std::unique_ptr<
           grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
-          BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*,
-          void*)>
-          start_req,
+          BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*)>
+          prepare_req,
       std::function<void(grpc::Status, ResponseType*)> on_done)
       : context_(),
         stub_(stub),
@@ -342,7 +323,7 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
         next_state_(State::INVALID),
         callback_(on_done),
         next_issue_(next_issue),
-        start_req_(start_req) {}
+        prepare_req_(prepare_req) {}
   ~ClientRpcContextStreamingPingPongImpl() override {}
   void Start(CompletionQueue* cq, const ClientConfig& config) override {
     StartInternal(cq, config.messages_per_stream());
@@ -359,8 +340,8 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
           break;  // loop around, don't return
         case State::WAIT:
           next_state_ = State::READY_TO_WRITE;
-          alarm_.reset(
-              new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
+          alarm_.reset(new Alarm);
+          alarm_->Set(cq_, next_issue_(), ClientRpcContext::tag(this));
           return true;
         case State::READY_TO_WRITE:
           if (!ok) {
@@ -405,10 +386,10 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
   }
   void StartNewClone(CompletionQueue* cq) override {
     auto* clone = new ClientRpcContextStreamingPingPongImpl(
-        stub_, req_, next_issue_, start_req_, callback_);
-    std::lock_guard<ClientRpcContext> lclone(*clone);
+        stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq, messages_per_stream_);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -430,10 +411,10 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
   State next_state_;
   std::function<void(grpc::Status, ResponseType*)> callback_;
   std::function<gpr_timespec()> next_issue_;
-  std::function<std::unique_ptr<
-      grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
-      BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*, void*)>
-      start_req_;
+  std::function<
+      std::unique_ptr<grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>(
+          BenchmarkService::Stub*, grpc::ClientContext*, CompletionQueue*)>
+      prepare_req_;
   grpc::Status status_;
   double start_;
   std::unique_ptr<grpc::ClientAsyncReaderWriter<RequestType, ResponseType>>
@@ -447,8 +428,9 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
     cq_ = cq;
     messages_per_stream_ = messages_per_stream;
     messages_issued_ = 0;
+    stream_ = prepare_req_(stub_, &context_, cq);
     next_state_ = State::STREAM_IDLE;
-    stream_ = start_req_(stub_, &context_, cq, ClientRpcContext::tag(this));
+    stream_->StartCall(ClientRpcContext::tag(this));
   }
 };
 
@@ -467,9 +449,9 @@ class AsyncStreamingPingPongClient final
   static void CheckDone(grpc::Status s, SimpleResponse* response) {}
   static std::unique_ptr<
       grpc::ClientAsyncReaderWriter<SimpleRequest, SimpleResponse>>
-  StartReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
-           CompletionQueue* cq, void* tag) {
-    auto stream = stub->AsyncStreamingCall(ctx, cq, tag);
+  PrepareReq(BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
+             CompletionQueue* cq) {
+    auto stream = stub->PrepareAsyncStreamingCall(ctx, cq);
     return stream;
   };
   static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
@@ -477,7 +459,7 @@ class AsyncStreamingPingPongClient final
                                     const SimpleRequest& req) {
     return new ClientRpcContextStreamingPingPongImpl<SimpleRequest,
                                                      SimpleResponse>(
-        stub, req, next_issue, AsyncStreamingPingPongClient::StartReq,
+        stub, req, next_issue, AsyncStreamingPingPongClient::PrepareReq,
         AsyncStreamingPingPongClient::CheckDone);
   }
 };
@@ -490,8 +472,8 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
       std::function<gpr_timespec()> next_issue,
       std::function<std::unique_ptr<grpc::ClientAsyncWriter<RequestType>>(
           BenchmarkService::Stub*, grpc::ClientContext*, ResponseType*,
-          CompletionQueue*, void*)>
-          start_req,
+          CompletionQueue*)>
+          prepare_req,
       std::function<void(grpc::Status, ResponseType*)> on_done)
       : context_(),
         stub_(stub),
@@ -501,7 +483,7 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
         next_state_(State::INVALID),
         callback_(on_done),
         next_issue_(next_issue),
-        start_req_(start_req) {}
+        prepare_req_(prepare_req) {}
   ~ClientRpcContextStreamingFromClientImpl() override {}
   void Start(CompletionQueue* cq, const ClientConfig& config) override {
     StartInternal(cq);
@@ -517,8 +499,8 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
           }
           break;  // loop around, don't return
         case State::WAIT:
-          alarm_.reset(
-              new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
+          alarm_.reset(new Alarm);
+          alarm_->Set(cq_, next_issue_(), ClientRpcContext::tag(this));
           next_state_ = State::READY_TO_WRITE;
           return true;
         case State::READY_TO_WRITE:
@@ -544,10 +526,10 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
   }
   void StartNewClone(CompletionQueue* cq) override {
     auto* clone = new ClientRpcContextStreamingFromClientImpl(
-        stub_, req_, next_issue_, start_req_, callback_);
-    std::lock_guard<ClientRpcContext> lclone(*clone);
+        stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -568,17 +550,17 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
   std::function<gpr_timespec()> next_issue_;
   std::function<std::unique_ptr<grpc::ClientAsyncWriter<RequestType>>(
       BenchmarkService::Stub*, grpc::ClientContext*, ResponseType*,
-      CompletionQueue*, void*)>
-      start_req_;
+      CompletionQueue*)>
+      prepare_req_;
   grpc::Status status_;
   double start_;
   std::unique_ptr<grpc::ClientAsyncWriter<RequestType>> stream_;
 
   void StartInternal(CompletionQueue* cq) {
     cq_ = cq;
-    stream_ = start_req_(stub_, &context_, &response_, cq,
-                         ClientRpcContext::tag(this));
+    stream_ = prepare_req_(stub_, &context_, &response_, cq);
     next_state_ = State::STREAM_IDLE;
+    stream_->StartCall(ClientRpcContext::tag(this));
   }
 };
 
@@ -595,10 +577,10 @@ class AsyncStreamingFromClientClient final
 
  private:
   static void CheckDone(grpc::Status s, SimpleResponse* response) {}
-  static std::unique_ptr<grpc::ClientAsyncWriter<SimpleRequest>> StartReq(
+  static std::unique_ptr<grpc::ClientAsyncWriter<SimpleRequest>> PrepareReq(
       BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
-      SimpleResponse* resp, CompletionQueue* cq, void* tag) {
-    auto stream = stub->AsyncStreamingFromClient(ctx, resp, cq, tag);
+      SimpleResponse* resp, CompletionQueue* cq) {
+    auto stream = stub->PrepareAsyncStreamingFromClient(ctx, resp, cq);
     return stream;
   };
   static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
@@ -606,7 +588,7 @@ class AsyncStreamingFromClientClient final
                                     const SimpleRequest& req) {
     return new ClientRpcContextStreamingFromClientImpl<SimpleRequest,
                                                        SimpleResponse>(
-        stub, req, next_issue, AsyncStreamingFromClientClient::StartReq,
+        stub, req, next_issue, AsyncStreamingFromClientClient::PrepareReq,
         AsyncStreamingFromClientClient::CheckDone);
   }
 };
@@ -619,8 +601,8 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
       std::function<gpr_timespec()> next_issue,
       std::function<std::unique_ptr<grpc::ClientAsyncReader<ResponseType>>(
           BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
-          CompletionQueue*, void*)>
-          start_req,
+          CompletionQueue*)>
+          prepare_req,
       std::function<void(grpc::Status, ResponseType*)> on_done)
       : context_(),
         stub_(stub),
@@ -630,7 +612,7 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
         next_state_(State::INVALID),
         callback_(on_done),
         next_issue_(next_issue),
-        start_req_(start_req) {}
+        prepare_req_(prepare_req) {}
   ~ClientRpcContextStreamingFromServerImpl() override {}
   void Start(CompletionQueue* cq, const ClientConfig& config) override {
     StartInternal(cq);
@@ -662,10 +644,10 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
   }
   void StartNewClone(CompletionQueue* cq) override {
     auto* clone = new ClientRpcContextStreamingFromServerImpl(
-        stub_, req_, next_issue_, start_req_, callback_);
-    std::lock_guard<ClientRpcContext> lclone(*clone);
+        stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -680,8 +662,8 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
   std::function<gpr_timespec()> next_issue_;
   std::function<std::unique_ptr<grpc::ClientAsyncReader<ResponseType>>(
       BenchmarkService::Stub*, grpc::ClientContext*, const RequestType&,
-      CompletionQueue*, void*)>
-      start_req_;
+      CompletionQueue*)>
+      prepare_req_;
   grpc::Status status_;
   double start_;
   std::unique_ptr<grpc::ClientAsyncReader<ResponseType>> stream_;
@@ -689,9 +671,9 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
   void StartInternal(CompletionQueue* cq) {
     // TODO(vjpai): Add support to rate-pace this
     cq_ = cq;
+    stream_ = prepare_req_(stub_, &context_, req_, cq);
     next_state_ = State::STREAM_IDLE;
-    stream_ =
-        start_req_(stub_, &context_, req_, cq, ClientRpcContext::tag(this));
+    stream_->StartCall(ClientRpcContext::tag(this));
   }
 };
 
@@ -708,10 +690,10 @@ class AsyncStreamingFromServerClient final
 
  private:
   static void CheckDone(grpc::Status s, SimpleResponse* response) {}
-  static std::unique_ptr<grpc::ClientAsyncReader<SimpleResponse>> StartReq(
+  static std::unique_ptr<grpc::ClientAsyncReader<SimpleResponse>> PrepareReq(
       BenchmarkService::Stub* stub, grpc::ClientContext* ctx,
-      const SimpleRequest& req, CompletionQueue* cq, void* tag) {
-    auto stream = stub->AsyncStreamingFromServer(ctx, req, cq, tag);
+      const SimpleRequest& req, CompletionQueue* cq) {
+    auto stream = stub->PrepareAsyncStreamingFromServer(ctx, req, cq);
     return stream;
   };
   static ClientRpcContext* SetupCtx(BenchmarkService::Stub* stub,
@@ -719,7 +701,7 @@ class AsyncStreamingFromServerClient final
                                     const SimpleRequest& req) {
     return new ClientRpcContextStreamingFromServerImpl<SimpleRequest,
                                                        SimpleResponse>(
-        stub, req, next_issue, AsyncStreamingFromServerClient::StartReq,
+        stub, req, next_issue, AsyncStreamingFromServerClient::PrepareReq,
         AsyncStreamingFromServerClient::CheckDone);
   }
 };
@@ -731,8 +713,8 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
       std::function<gpr_timespec()> next_issue,
       std::function<std::unique_ptr<grpc::GenericClientAsyncReaderWriter>(
           grpc::GenericStub*, grpc::ClientContext*,
-          const grpc::string& method_name, CompletionQueue*, void*)>
-          start_req,
+          const grpc::string& method_name, CompletionQueue*)>
+          prepare_req,
       std::function<void(grpc::Status, ByteBuffer*)> on_done)
       : context_(),
         stub_(stub),
@@ -742,7 +724,7 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
         next_state_(State::INVALID),
         callback_(on_done),
         next_issue_(next_issue),
-        start_req_(start_req) {}
+        prepare_req_(prepare_req) {}
   ~ClientRpcContextGenericStreamingImpl() override {}
   void Start(CompletionQueue* cq, const ClientConfig& config) override {
     StartInternal(cq, config.messages_per_stream());
@@ -759,8 +741,8 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
           break;  // loop around, don't return
         case State::WAIT:
           next_state_ = State::READY_TO_WRITE;
-          alarm_.reset(
-              new Alarm(cq_, next_issue_(), ClientRpcContext::tag(this)));
+          alarm_.reset(new Alarm);
+          alarm_->Set(cq_, next_issue_(), ClientRpcContext::tag(this));
           return true;
         case State::READY_TO_WRITE:
           if (!ok) {
@@ -805,10 +787,10 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
   }
   void StartNewClone(CompletionQueue* cq) override {
     auto* clone = new ClientRpcContextGenericStreamingImpl(
-        stub_, req_, next_issue_, start_req_, callback_);
-    std::lock_guard<ClientRpcContext> lclone(*clone);
+        stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq, messages_per_stream_);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -832,8 +814,8 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
   std::function<gpr_timespec()> next_issue_;
   std::function<std::unique_ptr<grpc::GenericClientAsyncReaderWriter>(
       grpc::GenericStub*, grpc::ClientContext*, const grpc::string&,
-      CompletionQueue*, void*)>
-      start_req_;
+      CompletionQueue*)>
+      prepare_req_;
   grpc::Status status_;
   double start_;
   std::unique_ptr<grpc::GenericClientAsyncReaderWriter> stream_;
@@ -848,9 +830,9 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
         "/grpc.testing.BenchmarkService/StreamingCall");
     messages_per_stream_ = messages_per_stream;
     messages_issued_ = 0;
+    stream_ = prepare_req_(stub_, &context_, kMethodName, cq);
     next_state_ = State::STREAM_IDLE;
-    stream_ = start_req_(stub_, &context_, kMethodName, cq,
-                         ClientRpcContext::tag(this));
+    stream_->StartCall(ClientRpcContext::tag(this));
   }
 };
 
@@ -872,17 +854,17 @@ class GenericAsyncStreamingClient final
 
  private:
   static void CheckDone(grpc::Status s, ByteBuffer* response) {}
-  static std::unique_ptr<grpc::GenericClientAsyncReaderWriter> StartReq(
+  static std::unique_ptr<grpc::GenericClientAsyncReaderWriter> PrepareReq(
       grpc::GenericStub* stub, grpc::ClientContext* ctx,
-      const grpc::string& method_name, CompletionQueue* cq, void* tag) {
-    auto stream = stub->Call(ctx, method_name, cq, tag);
+      const grpc::string& method_name, CompletionQueue* cq) {
+    auto stream = stub->PrepareCall(ctx, method_name, cq);
     return stream;
   };
   static ClientRpcContext* SetupCtx(grpc::GenericStub* stub,
                                     std::function<gpr_timespec()> next_issue,
                                     const ByteBuffer& req) {
     return new ClientRpcContextGenericStreamingImpl(
-        stub, req, next_issue, GenericAsyncStreamingClient::StartReq,
+        stub, req, next_issue, GenericAsyncStreamingClient::PrepareReq,
         GenericAsyncStreamingClient::CheckDone);
   }
 };
diff --git a/test/cpp/qps/interarrival.h b/test/cpp/qps/interarrival.h
index c6e417985a..1fa310c209 100644
--- a/test/cpp/qps/interarrival.h
+++ b/test/cpp/qps/interarrival.h
@@ -21,7 +21,7 @@
 
 #include <chrono>
 #include <cmath>
-#include <cstdlib>
+#include <random>
 #include <vector>
 
 #include <grpc++/support/config.h>
@@ -75,13 +75,13 @@ class InterarrivalTimer {
  public:
   InterarrivalTimer() {}
   void init(const RandomDistInterface& r, int threads, int entries = 1000000) {
+    std::random_device devrand;
+    std::mt19937_64 generator(devrand());
+    std::uniform_real_distribution<double> rando(0, 1);
     for (int i = 0; i < entries; i++) {
-      // rand is the only choice that is portable across POSIX and Windows
-      // and that supports new and old compilers
-      const double uniform_0_1 =
-          static_cast<double>(rand()) / static_cast<double>(RAND_MAX);
       random_table_.push_back(
-          static_cast<int64_t>(1e9 * r.transform(uniform_0_1)));
+          static_cast<int64_t>(1e9 * r.transform(rando(generator))));
+      ;
     }
     // Now set up the thread positions
     for (int i = 0; i < threads; i++) {
diff --git a/test/cpp/qps/report.cc b/test/cpp/qps/report.cc
index a45b10bcb8..42ebeff41d 100644
--- a/test/cpp/qps/report.cc
+++ b/test/cpp/qps/report.cc
@@ -26,6 +26,7 @@
 #include "test/cpp/qps/stats.h"
 
 #include <grpc++/client_context.h>
+#include "src/cpp/util/core_stats.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 
 namespace grpc {
@@ -85,6 +86,33 @@ void GprLogReporter::ReportQPS(const ScenarioResult& result) {
     gpr_log(GPR_INFO, "successful requests/second: %.1f",
             result.summary().successful_requests_per_second());
   }
+  for (int i = 0; i < result.client_stats_size(); i++) {
+    if (result.client_stats(i).has_core_stats()) {
+      ReportCoreStats("CLIENT", i, result.client_stats(i).core_stats());
+    }
+  }
+  for (int i = 0; i < result.server_stats_size(); i++) {
+    if (result.server_stats(i).has_core_stats()) {
+      ReportCoreStats("SERVER", i, result.server_stats(i).core_stats());
+    }
+  }
+}
+
+void GprLogReporter::ReportCoreStats(const char* name, int idx,
+                                     const grpc::core::Stats& stats) {
+  grpc_stats_data data;
+  ProtoToCoreStats(stats, &data);
+  for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
+    gpr_log(GPR_DEBUG, "%s[%d].%s = %" PRIdPTR, name, idx,
+            grpc_stats_counter_name[i], data.counters[i]);
+  }
+  for (int i = 0; i < GRPC_STATS_HISTOGRAM_COUNT; i++) {
+    gpr_log(GPR_DEBUG, "%s[%d].%s = %.1lf/%.1lf/%.1lf (50/95/99%%-ile)", name,
+            idx, grpc_stats_histogram_name[i],
+            grpc_stats_histo_percentile(&data, (grpc_stats_histograms)i, 50),
+            grpc_stats_histo_percentile(&data, (grpc_stats_histograms)i, 95),
+            grpc_stats_histo_percentile(&data, (grpc_stats_histograms)i, 99));
+  }
 }
 
 void GprLogReporter::ReportQPSPerCore(const ScenarioResult& result) {
diff --git a/test/cpp/qps/report.h b/test/cpp/qps/report.h
index 321be2a97f..1d7b2b54e7 100644
--- a/test/cpp/qps/report.h
+++ b/test/cpp/qps/report.h
@@ -104,6 +104,9 @@ class GprLogReporter : public Reporter {
   void ReportCpuUsage(const ScenarioResult& result) override;
   void ReportPollCount(const ScenarioResult& result) override;
   void ReportQueriesPerCpuSec(const ScenarioResult& result) override;
+
+  void ReportCoreStats(const char* name, int idx,
+                       const grpc::core::Stats& stats);
 };
 
 /** Dumps the report to a JSON file. */
diff --git a/test/cpp/qps/server.h b/test/cpp/qps/server.h
index df27a4368e..16d101d5e6 100644
--- a/test/cpp/qps/server.h
+++ b/test/cpp/qps/server.h
@@ -26,7 +26,7 @@
 #include <grpc/support/log.h>
 #include <vector>
 
-#include "src/core/lib/surface/completion_queue.h"
+#include "src/cpp/util/core_stats.h"
 #include "src/proto/grpc/testing/control.pb.h"
 #include "src/proto/grpc/testing/messages.pb.h"
 #include "test/core/end2end/data/ssl_test_data.h"
@@ -64,6 +64,9 @@ class Server {
       timer_result = timer_->Mark();
     }
 
+    grpc_stats_data core_stats;
+    grpc_stats_collect(&core_stats);
+
     ServerStats stats;
     stats.set_time_elapsed(timer_result.wall);
     stats.set_time_system(timer_result.system);
@@ -71,6 +74,7 @@ class Server {
     stats.set_total_cpu_time(timer_result.total_cpu_time);
     stats.set_idle_cpu_time(timer_result.idle_cpu_time);
     stats.set_cq_poll_count(poll_count);
+    CoreStatsToProto(core_stats, stats.mutable_core_stats());
     return stats;
   }
 
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index 8b00bcfeaf..4a82f98199 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -35,6 +35,7 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
 
+#include "src/core/lib/surface/completion_queue.h"
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/qps/server.h"
diff --git a/test/cpp/server/BUILD b/test/cpp/server/BUILD
index 3f63be2aa3..7538845803 100644
--- a/test/cpp/server/BUILD
+++ b/test/cpp/server/BUILD
@@ -14,7 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library", "grpc_cc_binary")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_test", "grpc_cc_library", "grpc_cc_binary", "grpc_package")
+
+grpc_package(name = "test/cpp/server")
 
 grpc_cc_test(
     name = "server_builder_test",
diff --git a/test/cpp/util/BUILD b/test/cpp/util/BUILD
index fbdec05698..2559c18c32 100644
--- a/test/cpp/util/BUILD
+++ b/test/cpp/util/BUILD
@@ -14,15 +14,9 @@
 
 licenses(["notice"])  # Apache v2
 
-load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_binary", "grpc_cc_test")
+load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_cc_binary", "grpc_cc_test", "grpc_package")
 
-package(
-    default_visibility = ["//visibility:public"],
-    features = [
-        "-layering_check",
-        "-parse_headers",
-    ],
-)
+grpc_package(name = "test/cpp/util", visibility = "public")
 
 grpc_cc_library(
     name = "test_config",
diff --git a/test/cpp/util/byte_buffer_test.cc b/test/cpp/util/byte_buffer_test.cc
index cac01a7307..8fb51bc663 100644
--- a/test/cpp/util/byte_buffer_test.cc
+++ b/test/cpp/util/byte_buffer_test.cc
@@ -93,7 +93,7 @@ TEST_F(ByteBufferTest, SerializationMakesCopy) {
   std::vector<Slice> slices;
   slices.push_back(Slice(hello, Slice::STEAL_REF));
   slices.push_back(Slice(world, Slice::STEAL_REF));
-  grpc_byte_buffer* send_buffer = nullptr;
+  ByteBuffer send_buffer;
   bool owned = false;
   ByteBuffer buffer(&slices[0], 2);
   slices.clear();
@@ -101,8 +101,7 @@ TEST_F(ByteBufferTest, SerializationMakesCopy) {
       buffer, &send_buffer, &owned);
   EXPECT_TRUE(status.ok());
   EXPECT_TRUE(owned);
-  EXPECT_TRUE(send_buffer != nullptr);
-  grpc_byte_buffer_destroy(send_buffer);
+  EXPECT_TRUE(send_buffer.Valid());
 }
 
 }  // namespace
diff --git a/test/distrib/cpp/run_distrib_test_cmake.sh b/test/distrib/cpp/run_distrib_test_cmake.sh
new file mode 100755
index 0000000000..ead8cc10bc
--- /dev/null
+++ b/test/distrib/cpp/run_distrib_test_cmake.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+cd $(dirname $0)/../../..
+
+echo "deb http://ftp.debian.org/debian jessie-backports main" | tee /etc/apt/sources.list.d/jessie-backports.list
+apt-get update
+#apt-get install -t jessie-backports -y libc-ares-dev  # we need specifically version 1.12
+apt-get install -t jessie-backports -y libssl-dev
+
+# Install c-ares
+cd third_party/cares/cares
+git fetch origin
+git checkout cares-1_13_0
+mkdir -p cmake/build
+cd cmake/build
+cmake -DCMAKE_BUILD_TYPE=Release ../..
+make -j4 install
+cd ../../../../..
+rm -rf third_party/cares/cares  # wipe out to prevent influencing the grpc build
+
+# Install zlib
+cd third_party/zlib
+mkdir -p cmake/build
+cd cmake/build
+cmake -DCMAKE_BUILD_TYPE=Release ../..
+make -j4 install
+cd ../../../..
+rm -rf third_party/zlib  # wipe out to prevent influencing the grpc build
+
+# Install protobuf
+cd third_party/protobuf
+mkdir -p cmake/build
+cd cmake/build
+cmake -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release ..
+make -j4 install
+cd ../../../..
+rm -rf third_party/protobuf  # wipe out to prevent influencing the grpc build
+
+# Install gRPC
+mkdir -p cmake/build
+cd cmake/build
+cmake -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DgRPC_PROTOBUF_PROVIDER=package -DgRPC_ZLIB_PROVIDER=package -DgRPC_CARES_PROVIDER=package -DgRPC_SSL_PROVIDER=package -DCMAKE_BUILD_TYPE=Release ../..
+make -j4 install
+cd ../..
+
+# Build helloworld example using cmake
+cd examples/cpp/helloworld
+mkdir -p cmake/build
+cd cmake/build
+cmake ../..
+make
+
diff --git a/test/distrib/cpp/run_distrib_test.sh b/test/distrib/cpp/run_distrib_test_routeguide.sh
index b043075d93..b043075d93 100755
--- a/test/distrib/cpp/run_distrib_test.sh
+++ b/test/distrib/cpp/run_distrib_test_routeguide.sh
diff --git a/third_party/cares/ares_build.h b/third_party/cares/ares_build.h
index d6b3d49f37..e5988cfeaa 100644
--- a/third_party/cares/ares_build.h
+++ b/third_party/cares/ares_build.h
@@ -83,148 +83,88 @@
 /*  DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE  */
 /* ================================================================ */
 
-#ifdef CARES_SIZEOF_LONG
-#  error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h"
-   Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined
-#endif
-
 #ifdef CARES_TYPEOF_ARES_SOCKLEN_T
 #  error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h"
    Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined
 #endif
 
-#ifdef CARES_SIZEOF_ARES_SOCKLEN_T
-#  error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h"
-   Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined
-#endif
-
 /* ================================================================ */
 /*    EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY    */
 /* ================================================================ */
 
 #if defined(__DJGPP__) || defined(__GO32__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__SALFORDC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__BORLANDC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__TURBOC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__WATCOMC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__POCC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__LCC__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__SYMBIAN32__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__MWERKS__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(_WIN32_WCE)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__MINGW32__)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__VMS)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 #elif defined(__OS400__)
 #  if defined(__ILEC400__)
-#    define CARES_SIZEOF_LONG           4
 #    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
-#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
 #    define CARES_PULL_SYS_TYPES_H      1
 #    define CARES_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(__MVS__)
 #  if defined(__IBMC__) || defined(__IBMCPP__)
-#    if defined(_ILP32)
-#      define CARES_SIZEOF_LONG           4
-#    elif defined(_LP64)
-#      define CARES_SIZEOF_LONG           8
-#    endif
 #    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
-#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
 #    define CARES_PULL_SYS_TYPES_H      1
 #    define CARES_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(__370__)
 #  if defined(__IBMC__) || defined(__IBMCPP__)
-#    if defined(_ILP32)
-#      define CARES_SIZEOF_LONG           4
-#    elif defined(_LP64)
-#      define CARES_SIZEOF_LONG           8
-#    endif
 #    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
-#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
 #    define CARES_PULL_SYS_TYPES_H      1
 #    define CARES_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(TPF)
-#  define CARES_SIZEOF_LONG           8
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 /* ===================================== */
 /*    KEEP MSVC THE PENULTIMATE ENTRY    */
 /* ===================================== */
 
 #elif defined(_MSC_VER)
-#  define CARES_SIZEOF_LONG           4
 #  define CARES_TYPEOF_ARES_SOCKLEN_T int
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 
 /* ===================================== */
 /*    KEEP GENERIC GCC THE LAST ENTRY    */
 /* ===================================== */
 
 #elif defined(__GNUC__)
-#  if defined(__LP64__) || \
-        defined(__x86_64__) || defined(__ppc64__)
-#    define CARES_SIZEOF_LONG           8
-#  elif defined(__ILP32__) || \
-      defined(__i386__) || defined(__ppc__) || defined(__arm__)
-#    define CARES_SIZEOF_LONG           4
-#  endif
 #  define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
-#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
 #  define CARES_PULL_SYS_TYPES_H      1
 #  define CARES_PULL_SYS_SOCKET_H     1
 
@@ -251,8 +191,27 @@
   typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;
 #endif
 
-/* Undefine UNICODE, as c-ares does not use the ANSI version of functions */
-/* explicitly. */
+/* Data type definition of ares_ssize_t. */
+/* gRPC Manuel edit here!
+ * Possibly include <_mingw.h> header to define __int64 type under mingw */
+#ifdef _WIN32
+#  ifdef _WIN64
+#    ifdef __MINGW32__
+#      include <_mingw.h>
+#    endif
+#    define CARES_TYPEOF_ARES_SSIZE_T __int64
+#  else
+#    define CARES_TYPEOF_ARES_SSIZE_T long
+#  endif
+#else
+#  define CARES_TYPEOF_ARES_SSIZE_T ssize_t
+#endif
+
+typedef CARES_TYPEOF_ARES_SSIZE_T ares_ssize_t;
+
+/* IMPORTANT: gRPC MANUAL EDIT HERE!
+ * Undefine UNICODE, as c-ares does not use the ANSI version of functions
+ * explicitly. */
 #ifdef UNICODE
 #  undef UNICODE
 #endif
diff --git a/third_party/cares/cares b/third_party/cares/cares
-Subproject 7691f773af79bf75a62d1863fd0f13ebf9dc51b
+Subproject 3be1924221e1326df520f8498d704a5c4c8d0cc
diff --git a/third_party/cares/config_darwin/ares_config.h b/third_party/cares/config_darwin/ares_config.h
index 0f5bd4b6a5..bca7cfbcc7 100644
--- a/third_party/cares/config_darwin/ares_config.h
+++ b/third_party/cares/config_darwin/ares_config.h
@@ -1,35 +1,34 @@
-/* ares_config.h.  Generated from ares_config.h.in by configure.  */
-/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+/* Generated from ares_config.h.cmake*/
 
 /* Define if building universal (internal helper macro) */
-/* #undef AC_APPLE_UNIVERSAL_BUILD */
+#undef AC_APPLE_UNIVERSAL_BUILD
 
 /* define this if ares is built for a big endian system */
-/* #undef ARES_BIG_ENDIAN */
+#undef ARES_BIG_ENDIAN
 
 /* when building as static part of libcurl */
-/* #undef BUILDING_LIBCURL */
+#undef BUILDING_LIBCURL
 
 /* Defined for build that exposes internal static functions for testing. */
-/* #undef CARES_EXPOSE_STATICS */
+#undef CARES_EXPOSE_STATICS
 
 /* Defined for build with symbol hiding. */
-#define CARES_SYMBOL_HIDING 1
+#undef CARES_SYMBOL_HIDING
 
 /* Definition to make a library symbol externally visible. */
-#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
+#undef CARES_SYMBOL_SCOPE_EXTERN
 
 /* Use resolver library to configure cares */
 /* #undef CARES_USE_LIBRESOLV */
 
 /* if a /etc/inet dir is being used */
-/* #undef ETC_INET */
+#undef ETC_INET
 
 /* Define to the type of arg 2 for gethostname. */
 #define GETHOSTNAME_TYPE_ARG2 size_t
 
 /* Define to the type qualifier of arg 1 for getnameinfo. */
-#define GETNAMEINFO_QUAL_ARG1 const
+#define GETNAMEINFO_QUAL_ARG1 
 
 /* Define to the type of arg 1 for getnameinfo. */
 #define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
@@ -44,33 +43,32 @@
 #define GETNAMEINFO_TYPE_ARG7 int
 
 /* Specifies the number of arguments to getservbyport_r */
-/* #undef GETSERVBYPORT_R_ARGS */
-
-/* Specifies the size of the buffer to pass to getservbyport_r */
-/* #undef GETSERVBYPORT_R_BUFSIZE */
+#define GETSERVBYPORT_R_ARGS 
 
 /* Define to 1 if you have AF_INET6. */
-#define HAVE_AF_INET6 1
+#define HAVE_AF_INET6
 
 /* Define to 1 if you have the <arpa/inet.h> header file. */
-#define HAVE_ARPA_INET_H 1
+#define HAVE_ARPA_INET_H
 
 /* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
-#define HAVE_ARPA_NAMESER_COMPAT_H 1
+#define HAVE_ARPA_NAMESER_COMPAT_H
 
 /* Define to 1 if you have the <arpa/nameser.h> header file. */
-#define HAVE_ARPA_NAMESER_H 1
+#define HAVE_ARPA_NAMESER_H
 
 /* Define to 1 if you have the <assert.h> header file. */
-#define HAVE_ASSERT_H 1
+#define HAVE_ASSERT_H
 
 /* Define to 1 if you have the `bitncmp' function. */
 /* #undef HAVE_BITNCMP */
 
 /* Define to 1 if bool is an available type. */
-#define HAVE_BOOL_T 1
+#define HAVE_BOOL_T
 
 /* Define to 1 if you have the clock_gettime function and monotonic timer. */
+/* IMPORTANT: gRPC MANUAL EDIT HERE!
+ * defining HAVE_CLOCK_GETTIME_MONOTONIC breaks the MacOS build on gRPC CI */
 /* #undef HAVE_CLOCK_GETTIME_MONOTONIC */
 
 /* Define to 1 if you have the closesocket function. */
@@ -80,73 +78,73 @@
 /* #undef HAVE_CLOSESOCKET_CAMEL */
 
 /* Define to 1 if you have the connect function. */
-#define HAVE_CONNECT 1
+#define HAVE_CONNECT
 
 /* define if the compiler supports basic C++11 syntax */
-#define HAVE_CXX11 1
+/* #undef HAVE_CXX11 */
 
 /* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
+#define HAVE_DLFCN_H
 
 /* Define to 1 if you have the <errno.h> header file. */
-#define HAVE_ERRNO_H 1
+#define HAVE_ERRNO_H
 
 /* Define to 1 if you have the fcntl function. */
-#define HAVE_FCNTL 1
+#define HAVE_FCNTL
 
 /* Define to 1 if you have the <fcntl.h> header file. */
-#define HAVE_FCNTL_H 1
+#define HAVE_FCNTL_H
 
 /* Define to 1 if you have a working fcntl O_NONBLOCK function. */
-#define HAVE_FCNTL_O_NONBLOCK 1
+#define HAVE_FCNTL_O_NONBLOCK
 
 /* Define to 1 if you have the freeaddrinfo function. */
-#define HAVE_FREEADDRINFO 1
+#define HAVE_FREEADDRINFO
 
 /* Define to 1 if you have a working getaddrinfo function. */
-#define HAVE_GETADDRINFO 1
+#define HAVE_GETADDRINFO
 
 /* Define to 1 if the getaddrinfo function is threadsafe. */
-#define HAVE_GETADDRINFO_THREADSAFE 1
+#define HAVE_GETADDRINFO_THREADSAFE
 
 /* Define to 1 if you have the getenv function. */
-#define HAVE_GETENV 1
+#define HAVE_GETENV
 
 /* Define to 1 if you have the gethostbyaddr function. */
-#define HAVE_GETHOSTBYADDR 1
+#define HAVE_GETHOSTBYADDR
 
 /* Define to 1 if you have the gethostbyname function. */
-#define HAVE_GETHOSTBYNAME 1
+#define HAVE_GETHOSTBYNAME
 
 /* Define to 1 if you have the gethostname function. */
-#define HAVE_GETHOSTNAME 1
+#define HAVE_GETHOSTNAME
 
 /* Define to 1 if you have the getnameinfo function. */
-#define HAVE_GETNAMEINFO 1
+#define HAVE_GETNAMEINFO
 
 /* Define to 1 if you have the getservbyport_r function. */
 /* #undef HAVE_GETSERVBYPORT_R */
 
 /* Define to 1 if you have the `gettimeofday' function. */
-#define HAVE_GETTIMEOFDAY 1
+#define HAVE_GETTIMEOFDAY
 
 /* Define to 1 if you have the `if_indextoname' function. */
-#define HAVE_IF_INDEXTONAME 1
+#define HAVE_IF_INDEXTONAME
 
 /* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
-#define HAVE_INET_NET_PTON 1
+#define HAVE_INET_NET_PTON
 
 /* Define to 1 if you have a IPv6 capable working inet_ntop function. */
-#define HAVE_INET_NTOP 1
+#define HAVE_INET_NTOP
 
 /* Define to 1 if you have a IPv6 capable working inet_pton function. */
-#define HAVE_INET_PTON 1
+#define HAVE_INET_PTON
 
 /* Define to 1 if you have the <inttypes.h> header file. */
-#define HAVE_INTTYPES_H 1
+#define HAVE_INTTYPES_H
 
 /* Define to 1 if you have the ioctl function. */
-#define HAVE_IOCTL 1
+#define HAVE_IOCTL
 
 /* Define to 1 if you have the ioctlsocket function. */
 /* #undef HAVE_IOCTLSOCKET */
@@ -162,109 +160,109 @@
 /* #undef HAVE_IOCTLSOCKET_FIONBIO */
 
 /* Define to 1 if you have a working ioctl FIONBIO function. */
-#define HAVE_IOCTL_FIONBIO 1
+#define HAVE_IOCTL_FIONBIO
 
 /* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
-#define HAVE_IOCTL_SIOCGIFADDR 1
+#define HAVE_IOCTL_SIOCGIFADDR
 
 /* Define to 1 if you have the `resolve' library (-lresolve). */
-/* #undef HAVE_LIBRESOLVE */
+#define HAVE_LIBRESOLV
 
 /* Define to 1 if you have the <limits.h> header file. */
-#define HAVE_LIMITS_H 1
+#define HAVE_LIMITS_H
 
 /* if your compiler supports LL */
-#define HAVE_LL 1
+#define HAVE_LL
 
 /* Define to 1 if the compiler supports the 'long long' data type. */
-#define HAVE_LONGLONG 1
+#define HAVE_LONGLONG
 
 /* Define to 1 if you have the malloc.h header file. */
 /* #undef HAVE_MALLOC_H */
 
 /* Define to 1 if you have the memory.h header file. */
-#define HAVE_MEMORY_H 1
+#define HAVE_MEMORY_H
 
 /* Define to 1 if you have the MSG_NOSIGNAL flag. */
 /* #undef HAVE_MSG_NOSIGNAL */
 
 /* Define to 1 if you have the <netdb.h> header file. */
-#define HAVE_NETDB_H 1
+#define HAVE_NETDB_H
 
 /* Define to 1 if you have the <netinet/in.h> header file. */
-#define HAVE_NETINET_IN_H 1
+#define HAVE_NETINET_IN_H
 
 /* Define to 1 if you have the <netinet/tcp.h> header file. */
-#define HAVE_NETINET_TCP_H 1
+#define HAVE_NETINET_TCP_H
 
 /* Define to 1 if you have the <net/if.h> header file. */
-#define HAVE_NET_IF_H 1
+#define HAVE_NET_IF_H
 
 /* Define to 1 if you have PF_INET6. */
-#define HAVE_PF_INET6 1
+#define HAVE_PF_INET6
 
 /* Define to 1 if you have the recv function. */
-#define HAVE_RECV 1
+#define HAVE_RECV
 
 /* Define to 1 if you have the recvfrom function. */
-#define HAVE_RECVFROM 1
+#define HAVE_RECVFROM
 
 /* Define to 1 if you have the send function. */
-#define HAVE_SEND 1
+#define HAVE_SEND
 
 /* Define to 1 if you have the setsockopt function. */
-#define HAVE_SETSOCKOPT 1
+#define HAVE_SETSOCKOPT
 
 /* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
 /* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
 
 /* Define to 1 if you have the <signal.h> header file. */
-#define HAVE_SIGNAL_H 1
+#define HAVE_SIGNAL_H
 
 /* Define to 1 if sig_atomic_t is an available typedef. */
-#define HAVE_SIG_ATOMIC_T 1
+#define HAVE_SIG_ATOMIC_T
 
 /* Define to 1 if sig_atomic_t is already defined as volatile. */
 /* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
 
 /* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
-#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
 
 /* Define to 1 if you have the socket function. */
-#define HAVE_SOCKET 1
+#define HAVE_SOCKET
 
 /* Define to 1 if you have the <socket.h> header file. */
 /* #undef HAVE_SOCKET_H */
 
 /* Define to 1 if you have the <stdbool.h> header file. */
-#define HAVE_STDBOOL_H 1
+#define HAVE_STDBOOL_H
 
 /* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
+#define HAVE_STDINT_H
 
 /* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H 1
+#define HAVE_STDLIB_H
 
 /* Define to 1 if you have the strcasecmp function. */
-#define HAVE_STRCASECMP 1
+#define HAVE_STRCASECMP
 
 /* Define to 1 if you have the strcmpi function. */
 /* #undef HAVE_STRCMPI */
 
 /* Define to 1 if you have the strdup function. */
-#define HAVE_STRDUP 1
+#define HAVE_STRDUP
 
 /* Define to 1 if you have the stricmp function. */
 /* #undef HAVE_STRICMP */
 
 /* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
+#define HAVE_STRINGS_H
 
 /* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
+#define HAVE_STRING_H
 
 /* Define to 1 if you have the strncasecmp function. */
-#define HAVE_STRNCASECMP 1
+#define HAVE_STRNCASECMP
 
 /* Define to 1 if you have the strncmpi function. */
 /* #undef HAVE_STRNCMPI */
@@ -276,49 +274,49 @@
 /* #undef HAVE_STROPTS_H */
 
 /* Define to 1 if you have struct addrinfo. */
-#define HAVE_STRUCT_ADDRINFO 1
+#define HAVE_STRUCT_ADDRINFO
 
 /* Define to 1 if you have struct in6_addr. */
-#define HAVE_STRUCT_IN6_ADDR 1
+#define HAVE_STRUCT_IN6_ADDR
 
 /* Define to 1 if you have struct sockaddr_in6. */
-#define HAVE_STRUCT_SOCKADDR_IN6 1
+#define HAVE_STRUCT_SOCKADDR_IN6
 
 /* if struct sockaddr_storage is defined */
-#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+#define HAVE_STRUCT_SOCKADDR_STORAGE
 
 /* Define to 1 if you have the timeval struct. */
-#define HAVE_STRUCT_TIMEVAL 1
+#define HAVE_STRUCT_TIMEVAL
 
 /* Define to 1 if you have the <sys/ioctl.h> header file. */
-#define HAVE_SYS_IOCTL_H 1
+#define HAVE_SYS_IOCTL_H
 
 /* Define to 1 if you have the <sys/param.h> header file. */
-#define HAVE_SYS_PARAM_H 1
+#define HAVE_SYS_PARAM_H
 
 /* Define to 1 if you have the <sys/select.h> header file. */
-#define HAVE_SYS_SELECT_H 1
+#define HAVE_SYS_SELECT_H
 
 /* Define to 1 if you have the <sys/socket.h> header file. */
-#define HAVE_SYS_SOCKET_H 1
+#define HAVE_SYS_SOCKET_H
 
 /* Define to 1 if you have the <sys/stat.h> header file. */
-#define HAVE_SYS_STAT_H 1
+#define HAVE_SYS_STAT_H
 
 /* Define to 1 if you have the <sys/time.h> header file. */
-#define HAVE_SYS_TIME_H 1
+#define HAVE_SYS_TIME_H
 
 /* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
+#define HAVE_SYS_TYPES_H
 
 /* Define to 1 if you have the <sys/uio.h> header file. */
-#define HAVE_SYS_UIO_H 1
+#define HAVE_SYS_UIO_H
 
 /* Define to 1 if you have the <time.h> header file. */
-#define HAVE_TIME_H 1
+#define HAVE_TIME_H
 
 /* Define to 1 if you have the <unistd.h> header file. */
-#define HAVE_UNISTD_H 1
+#define HAVE_UNISTD_H
 
 /* Define to 1 if you have the windows.h header file. */
 /* #undef HAVE_WINDOWS_H */
@@ -330,64 +328,31 @@
 /* #undef HAVE_WINSOCK_H */
 
 /* Define to 1 if you have the writev function. */
-#define HAVE_WRITEV 1
+#define HAVE_WRITEV
 
 /* Define to 1 if you have the ws2tcpip.h header file. */
 /* #undef HAVE_WS2TCPIP_H */
 
-/* Define to the sub-directory where libtool stores uninstalled libraries. */
-#define LT_OBJDIR ".libs/"
-
 /* Define to 1 if you need the malloc.h header file even with stdlib.h */
 /* #undef NEED_MALLOC_H */
 
 /* Define to 1 if you need the memory.h header file even with stdlib.h */
 /* #undef NEED_MEMORY_H */
 
-/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
-/* #undef NEED_REENTRANT */
-
-/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
-/* #undef NEED_THREAD_SAFE */
-
-/* cpu-machine-OS */
-#define OS "i386-apple-darwin9.8.0"
-
-/* Name of package */
-#define PACKAGE "c-ares"
-
-/* Define to the address where bug reports for this package should be sent. */
-#define PACKAGE_BUGREPORT "c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares"
-
-/* Define to the full name of this package. */
-#define PACKAGE_NAME "c-ares"
-
-/* Define to the full name and version of this package. */
-#define PACKAGE_STRING "c-ares -"
-
-/* Define to the one symbol short name of this package. */
-#define PACKAGE_TARNAME "c-ares"
-
-/* Define to the home page for this package. */
-#define PACKAGE_URL ""
-
-/* Define to the version of this package. */
-#define PACKAGE_VERSION "-"
-
 /* a suitable file/device to read random data from */
-#define RANDOM_FILE "/dev/urandom"
+/* #undef RANDOM_FILE */
 
 /* Define to the type qualifier pointed by arg 5 for recvfrom. */
-#define RECVFROM_QUAL_ARG5
+#define RECVFROM_QUAL_ARG5 
 
 /* Define to the type of arg 1 for recvfrom. */
 #define RECVFROM_TYPE_ARG1 int
 
 /* Define to the type pointed by arg 2 for recvfrom. */
-#define RECVFROM_TYPE_ARG2 void
+#define RECVFROM_TYPE_ARG2 void *
 
 /* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
-#define RECVFROM_TYPE_ARG2_IS_VOID 1
+#define RECVFROM_TYPE_ARG2_IS_VOID 0
 
 /* Define to the type of arg 3 for recvfrom. */
 #define RECVFROM_TYPE_ARG3 size_t
@@ -396,16 +361,16 @@
 #define RECVFROM_TYPE_ARG4 int
 
 /* Define to the type pointed by arg 5 for recvfrom. */
-#define RECVFROM_TYPE_ARG5 struct sockaddr
+#define RECVFROM_TYPE_ARG5 struct sockaddr *
 
 /* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
-/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+#define RECVFROM_TYPE_ARG5_IS_VOID 0
 
 /* Define to the type pointed by arg 6 for recvfrom. */
-#define RECVFROM_TYPE_ARG6 socklen_t
+#define RECVFROM_TYPE_ARG6 socklen_t *
 
 /* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
-/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+#define RECVFROM_TYPE_ARG6_IS_VOID 0
 
 /* Define to the function return type for recvfrom. */
 #define RECVFROM_TYPE_RETV ssize_t
@@ -426,10 +391,10 @@
 #define RECV_TYPE_RETV ssize_t
 
 /* Define as the return type of signal handlers (`int' or `void'). */
-#define RETSIGTYPE void
+#define RETSIGTYPE 
 
 /* Define to the type qualifier of arg 2 for send. */
-#define SEND_QUAL_ARG2 const
+#define SEND_QUAL_ARG2 
 
 /* Define to the type of arg 1 for send. */
 #define SEND_TYPE_ARG1 int
@@ -446,78 +411,15 @@
 /* Define to the function return type for send. */
 #define SEND_TYPE_RETV ssize_t
 
-/* The size of `int', as computed by sizeof. */
-#define SIZEOF_INT 4
-
-/* The size of `long', as computed by sizeof. */
-#define SIZEOF_LONG 4
-
-/* The size of `short', as computed by sizeof. */
-#define SIZEOF_SHORT 2
-
-/* The size of `size_t', as computed by sizeof. */
-#define SIZEOF_SIZE_T 4
-
-/* The size of `struct in6_addr', as computed by sizeof. */
-#define SIZEOF_STRUCT_IN6_ADDR 16
-
-/* The size of `struct in_addr', as computed by sizeof. */
-#define SIZEOF_STRUCT_IN_ADDR 4
-
-/* The size of `time_t', as computed by sizeof. */
-#define SIZEOF_TIME_T 4
-
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
-#define TIME_WITH_SYS_TIME 1
+#define TIME_WITH_SYS_TIME
 
 /* Define to disable non-blocking sockets. */
-/* #undef USE_BLOCKING_SOCKETS */
-
-/* Version number of package */
-#define VERSION "-"
+#undef USE_BLOCKING_SOCKETS
 
 /* Define to avoid automatic inclusion of winsock.h */
-/* #undef WIN32_LEAN_AND_MEAN */
-
-/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
-   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-/* #  undef WORDS_BIGENDIAN */
-# endif
-#endif
-
-/* Define to 1 if OS is AIX. */
-#ifndef _ALL_SOURCE
-/* #  undef _ALL_SOURCE */
-#endif
-
-/* Enable large inode numbers on Mac OS X 10.5.  */
-#ifndef _DARWIN_USE_64_BIT_INODE
-# define _DARWIN_USE_64_BIT_INODE 1
-#endif
-
-/* Number of bits in a file offset, on hosts where this is settable. */
-/* #undef _FILE_OFFSET_BITS */
-
-/* Define for large files, on AIX-style hosts. */
-/* #undef _LARGE_FILES */
-
-/* Define to empty if `const' does not conform to ANSI C. */
-/* #undef const */
+#undef WIN32_LEAN_AND_MEAN
 
 /* Type to use in place of in_addr_t when system does not provide it. */
-/* #undef in_addr_t */
-
-/* Define to `unsigned int' if <sys/types.h> does not define. */
-/* #undef size_t */
+#undef in_addr_t
 
-/* the signed version of size_t */
-/* #undef ssize_t */
diff --git a/third_party/cares/config_freebsd/ares_config.h b/third_party/cares/config_freebsd/ares_config.h
index 605db129e2..7beb20c76e 100644
--- a/third_party/cares/config_freebsd/ares_config.h
+++ b/third_party/cares/config_freebsd/ares_config.h
@@ -19,6 +19,9 @@
 /* Definition to make a library symbol externally visible. */
 #define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
 
+/* the signed version of size_t */
+#define CARES_TYPEOF_ARES_SSIZE_T ssize_t
+
 /* Use resolver library to configure cares */
 /* #undef CARES_USE_LIBRESOLV */
 
@@ -351,7 +354,7 @@
 /* #undef NEED_THREAD_SAFE */
 
 /* cpu-machine-OS */
-#define OS "amd64-unknown-freebsd10.3"
+#define OS "amd64-unknown-freebsd11.0"
 
 /* Name of package */
 #define PACKAGE "c-ares"
@@ -497,6 +500,3 @@
 
 /* Define to `unsigned int' if <sys/types.h> does not define. */
 /* #undef size_t */
-
-/* the signed version of size_t */
-/* #undef ssize_t */
diff --git a/third_party/cares/config_linux/ares_config.h b/third_party/cares/config_linux/ares_config.h
index 8c1b954327..065d0bc515 100644
--- a/third_party/cares/config_linux/ares_config.h
+++ b/third_party/cares/config_linux/ares_config.h
@@ -1,35 +1,34 @@
-/* ares_config.h.  Generated from ares_config.h.in by configure.  */
-/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+/* Generated from ares_config.h.cmake*/
 
 /* Define if building universal (internal helper macro) */
-/* #undef AC_APPLE_UNIVERSAL_BUILD */
+#undef AC_APPLE_UNIVERSAL_BUILD
 
 /* define this if ares is built for a big endian system */
-/* #undef ARES_BIG_ENDIAN */
+#undef ARES_BIG_ENDIAN
 
 /* when building as static part of libcurl */
-/* #undef BUILDING_LIBCURL */
+#undef BUILDING_LIBCURL
 
 /* Defined for build that exposes internal static functions for testing. */
-/* #undef CARES_EXPOSE_STATICS */
+#undef CARES_EXPOSE_STATICS
 
 /* Defined for build with symbol hiding. */
-#define CARES_SYMBOL_HIDING 1
+#undef CARES_SYMBOL_HIDING
 
 /* Definition to make a library symbol externally visible. */
-#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
+#undef CARES_SYMBOL_SCOPE_EXTERN
 
 /* Use resolver library to configure cares */
 /* #undef CARES_USE_LIBRESOLV */
 
 /* if a /etc/inet dir is being used */
-/* #undef ETC_INET */
+#undef ETC_INET
 
 /* Define to the type of arg 2 for gethostname. */
 #define GETHOSTNAME_TYPE_ARG2 size_t
 
 /* Define to the type qualifier of arg 1 for getnameinfo. */
-#define GETNAMEINFO_QUAL_ARG1 const
+#define GETNAMEINFO_QUAL_ARG1 
 
 /* Define to the type of arg 1 for getnameinfo. */
 #define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
@@ -46,37 +45,35 @@
 /* Specifies the number of arguments to getservbyport_r */
 #define GETSERVBYPORT_R_ARGS 6
 
-/* Specifies the size of the buffer to pass to getservbyport_r */
-#define GETSERVBYPORT_R_BUFSIZE 4096
-
 /* Define to 1 if you have AF_INET6. */
-#define HAVE_AF_INET6 1
+#define HAVE_AF_INET6
 
 /* Define to 1 if you have the <arpa/inet.h> header file. */
-#define HAVE_ARPA_INET_H 1
+#define HAVE_ARPA_INET_H
 
 /* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
-#define HAVE_ARPA_NAMESER_COMPAT_H 1
+#define HAVE_ARPA_NAMESER_COMPAT_H
 
 /* Define to 1 if you have the <arpa/nameser.h> header file. */
-#define HAVE_ARPA_NAMESER_H 1
+#define HAVE_ARPA_NAMESER_H
 
 /* Define to 1 if you have the <assert.h> header file. */
-#define HAVE_ASSERT_H 1
+#define HAVE_ASSERT_H
 
 /* Define to 1 if you have the `bitncmp' function. */
 /* #undef HAVE_BITNCMP */
 
 /* Define to 1 if bool is an available type. */
-#define HAVE_BOOL_T 1
+#define HAVE_BOOL_T
 
-/* Define HAVE_CLOCK_GETTIME_MONOTONIC to 1 if you have the clock_gettime
+/* Define HAVE_CLOCK_GETTIME_MONOTONIC if you have the clock_gettime
  * function and monotonic timer.
  *
+ * IMPORTANT: gRPC MANUAL EDIT HERE!
  * Note: setting HAVE_CLOCK_GETTIME_MONOTONIC causes use of the clock_gettime
  * function from glibc, don't set it to support glibc < 2.17 */
 #ifndef GPR_BACKWARDS_COMPATIBILITY_MODE
-  #define HAVE_CLOCK_GETTIME_MONOTONIC 1
+  #define HAVE_CLOCK_GETTIME_MONOTONIC
 #endif
 
 /* Define to 1 if you have the closesocket function. */
@@ -86,73 +83,73 @@
 /* #undef HAVE_CLOSESOCKET_CAMEL */
 
 /* Define to 1 if you have the connect function. */
-#define HAVE_CONNECT 1
+#define HAVE_CONNECT
 
 /* define if the compiler supports basic C++11 syntax */
-#define HAVE_CXX11 1
+/* #undef HAVE_CXX11 */
 
 /* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
+#define HAVE_DLFCN_H
 
 /* Define to 1 if you have the <errno.h> header file. */
-#define HAVE_ERRNO_H 1
+#define HAVE_ERRNO_H
 
 /* Define to 1 if you have the fcntl function. */
-#define HAVE_FCNTL 1
+#define HAVE_FCNTL
 
 /* Define to 1 if you have the <fcntl.h> header file. */
-#define HAVE_FCNTL_H 1
+#define HAVE_FCNTL_H
 
 /* Define to 1 if you have a working fcntl O_NONBLOCK function. */
-#define HAVE_FCNTL_O_NONBLOCK 1
+#define HAVE_FCNTL_O_NONBLOCK
 
 /* Define to 1 if you have the freeaddrinfo function. */
-#define HAVE_FREEADDRINFO 1
+#define HAVE_FREEADDRINFO
 
 /* Define to 1 if you have a working getaddrinfo function. */
-#define HAVE_GETADDRINFO 1
+#define HAVE_GETADDRINFO
 
 /* Define to 1 if the getaddrinfo function is threadsafe. */
-#define HAVE_GETADDRINFO_THREADSAFE 1
+/* #undef HAVE_GETADDRINFO_THREADSAFE */
 
 /* Define to 1 if you have the getenv function. */
-#define HAVE_GETENV 1
+#define HAVE_GETENV
 
 /* Define to 1 if you have the gethostbyaddr function. */
-#define HAVE_GETHOSTBYADDR 1
+#define HAVE_GETHOSTBYADDR
 
 /* Define to 1 if you have the gethostbyname function. */
-#define HAVE_GETHOSTBYNAME 1
+#define HAVE_GETHOSTBYNAME
 
 /* Define to 1 if you have the gethostname function. */
-#define HAVE_GETHOSTNAME 1
+#define HAVE_GETHOSTNAME
 
 /* Define to 1 if you have the getnameinfo function. */
-#define HAVE_GETNAMEINFO 1
+#define HAVE_GETNAMEINFO
 
 /* Define to 1 if you have the getservbyport_r function. */
-#define HAVE_GETSERVBYPORT_R 1
+#define HAVE_GETSERVBYPORT_R
 
 /* Define to 1 if you have the `gettimeofday' function. */
-#define HAVE_GETTIMEOFDAY 1
+#define HAVE_GETTIMEOFDAY
 
 /* Define to 1 if you have the `if_indextoname' function. */
-#define HAVE_IF_INDEXTONAME 1
+#define HAVE_IF_INDEXTONAME
 
 /* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
 /* #undef HAVE_INET_NET_PTON */
 
 /* Define to 1 if you have a IPv6 capable working inet_ntop function. */
-#define HAVE_INET_NTOP 1
+#define HAVE_INET_NTOP
 
 /* Define to 1 if you have a IPv6 capable working inet_pton function. */
-#define HAVE_INET_PTON 1
+#define HAVE_INET_PTON
 
 /* Define to 1 if you have the <inttypes.h> header file. */
-#define HAVE_INTTYPES_H 1
+#define HAVE_INTTYPES_H
 
 /* Define to 1 if you have the ioctl function. */
-#define HAVE_IOCTL 1
+#define HAVE_IOCTL
 
 /* Define to 1 if you have the ioctlsocket function. */
 /* #undef HAVE_IOCTLSOCKET */
@@ -168,109 +165,109 @@
 /* #undef HAVE_IOCTLSOCKET_FIONBIO */
 
 /* Define to 1 if you have a working ioctl FIONBIO function. */
-#define HAVE_IOCTL_FIONBIO 1
+#define HAVE_IOCTL_FIONBIO
 
 /* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
-#define HAVE_IOCTL_SIOCGIFADDR 1
+#define HAVE_IOCTL_SIOCGIFADDR
 
 /* Define to 1 if you have the `resolve' library (-lresolve). */
-/* #undef HAVE_LIBRESOLVE */
+/* #undef HAVE_LIBRESOLV */
 
 /* Define to 1 if you have the <limits.h> header file. */
-#define HAVE_LIMITS_H 1
+#define HAVE_LIMITS_H
 
 /* if your compiler supports LL */
-#define HAVE_LL 1
+#define HAVE_LL
 
 /* Define to 1 if the compiler supports the 'long long' data type. */
-#define HAVE_LONGLONG 1
+#define HAVE_LONGLONG
 
 /* Define to 1 if you have the malloc.h header file. */
-#define HAVE_MALLOC_H 1
+#define HAVE_MALLOC_H
 
 /* Define to 1 if you have the memory.h header file. */
-#define HAVE_MEMORY_H 1
+#define HAVE_MEMORY_H
 
 /* Define to 1 if you have the MSG_NOSIGNAL flag. */
-#define HAVE_MSG_NOSIGNAL 1
+#define HAVE_MSG_NOSIGNAL
 
 /* Define to 1 if you have the <netdb.h> header file. */
-#define HAVE_NETDB_H 1
+#define HAVE_NETDB_H
 
 /* Define to 1 if you have the <netinet/in.h> header file. */
-#define HAVE_NETINET_IN_H 1
+#define HAVE_NETINET_IN_H
 
 /* Define to 1 if you have the <netinet/tcp.h> header file. */
-#define HAVE_NETINET_TCP_H 1
+#define HAVE_NETINET_TCP_H
 
 /* Define to 1 if you have the <net/if.h> header file. */
-#define HAVE_NET_IF_H 1
+#define HAVE_NET_IF_H
 
 /* Define to 1 if you have PF_INET6. */
-#define HAVE_PF_INET6 1
+#define HAVE_PF_INET6
 
 /* Define to 1 if you have the recv function. */
-#define HAVE_RECV 1
+#define HAVE_RECV
 
 /* Define to 1 if you have the recvfrom function. */
-#define HAVE_RECVFROM 1
+#define HAVE_RECVFROM
 
 /* Define to 1 if you have the send function. */
-#define HAVE_SEND 1
+#define HAVE_SEND
 
 /* Define to 1 if you have the setsockopt function. */
-#define HAVE_SETSOCKOPT 1
+#define HAVE_SETSOCKOPT
 
 /* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
 /* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
 
 /* Define to 1 if you have the <signal.h> header file. */
-#define HAVE_SIGNAL_H 1
+#define HAVE_SIGNAL_H
 
 /* Define to 1 if sig_atomic_t is an available typedef. */
-#define HAVE_SIG_ATOMIC_T 1
+#define HAVE_SIG_ATOMIC_T
 
 /* Define to 1 if sig_atomic_t is already defined as volatile. */
 /* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
 
 /* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
-#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
 
 /* Define to 1 if you have the socket function. */
-#define HAVE_SOCKET 1
+#define HAVE_SOCKET
 
 /* Define to 1 if you have the <socket.h> header file. */
 /* #undef HAVE_SOCKET_H */
 
 /* Define to 1 if you have the <stdbool.h> header file. */
-#define HAVE_STDBOOL_H 1
+#define HAVE_STDBOOL_H
 
 /* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
+#define HAVE_STDINT_H
 
 /* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H 1
+#define HAVE_STDLIB_H
 
 /* Define to 1 if you have the strcasecmp function. */
-#define HAVE_STRCASECMP 1
+#define HAVE_STRCASECMP
 
 /* Define to 1 if you have the strcmpi function. */
 /* #undef HAVE_STRCMPI */
 
 /* Define to 1 if you have the strdup function. */
-#define HAVE_STRDUP 1
+#define HAVE_STRDUP
 
 /* Define to 1 if you have the stricmp function. */
 /* #undef HAVE_STRICMP */
 
 /* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
+#define HAVE_STRINGS_H
 
 /* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
+#define HAVE_STRING_H
 
 /* Define to 1 if you have the strncasecmp function. */
-#define HAVE_STRNCASECMP 1
+#define HAVE_STRNCASECMP
 
 /* Define to 1 if you have the strncmpi function. */
 /* #undef HAVE_STRNCMPI */
@@ -279,52 +276,52 @@
 /* #undef HAVE_STRNICMP */
 
 /* Define to 1 if you have the <stropts.h> header file. */
-#define HAVE_STROPTS_H 1
+#define HAVE_STROPTS_H
 
 /* Define to 1 if you have struct addrinfo. */
-#define HAVE_STRUCT_ADDRINFO 1
+#define HAVE_STRUCT_ADDRINFO
 
 /* Define to 1 if you have struct in6_addr. */
-#define HAVE_STRUCT_IN6_ADDR 1
+#define HAVE_STRUCT_IN6_ADDR
 
 /* Define to 1 if you have struct sockaddr_in6. */
-#define HAVE_STRUCT_SOCKADDR_IN6 1
+#define HAVE_STRUCT_SOCKADDR_IN6
 
 /* if struct sockaddr_storage is defined */
-#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+#define HAVE_STRUCT_SOCKADDR_STORAGE
 
 /* Define to 1 if you have the timeval struct. */
-#define HAVE_STRUCT_TIMEVAL 1
+#define HAVE_STRUCT_TIMEVAL
 
 /* Define to 1 if you have the <sys/ioctl.h> header file. */
-#define HAVE_SYS_IOCTL_H 1
+#define HAVE_SYS_IOCTL_H
 
 /* Define to 1 if you have the <sys/param.h> header file. */
-#define HAVE_SYS_PARAM_H 1
+#define HAVE_SYS_PARAM_H
 
 /* Define to 1 if you have the <sys/select.h> header file. */
-#define HAVE_SYS_SELECT_H 1
+#define HAVE_SYS_SELECT_H
 
 /* Define to 1 if you have the <sys/socket.h> header file. */
-#define HAVE_SYS_SOCKET_H 1
+#define HAVE_SYS_SOCKET_H
 
 /* Define to 1 if you have the <sys/stat.h> header file. */
-#define HAVE_SYS_STAT_H 1
+#define HAVE_SYS_STAT_H
 
 /* Define to 1 if you have the <sys/time.h> header file. */
-#define HAVE_SYS_TIME_H 1
+#define HAVE_SYS_TIME_H
 
 /* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
+#define HAVE_SYS_TYPES_H
 
 /* Define to 1 if you have the <sys/uio.h> header file. */
-#define HAVE_SYS_UIO_H 1
+#define HAVE_SYS_UIO_H
 
 /* Define to 1 if you have the <time.h> header file. */
-#define HAVE_TIME_H 1
+#define HAVE_TIME_H
 
 /* Define to 1 if you have the <unistd.h> header file. */
-#define HAVE_UNISTD_H 1
+#define HAVE_UNISTD_H
 
 /* Define to 1 if you have the windows.h header file. */
 /* #undef HAVE_WINDOWS_H */
@@ -336,53 +333,19 @@
 /* #undef HAVE_WINSOCK_H */
 
 /* Define to 1 if you have the writev function. */
-#define HAVE_WRITEV 1
+#define HAVE_WRITEV
 
 /* Define to 1 if you have the ws2tcpip.h header file. */
 /* #undef HAVE_WS2TCPIP_H */
 
-/* Define to the sub-directory in which libtool stores uninstalled libraries.
-   */
-#define LT_OBJDIR ".libs/"
-
 /* Define to 1 if you need the malloc.h header file even with stdlib.h */
 /* #undef NEED_MALLOC_H */
 
 /* Define to 1 if you need the memory.h header file even with stdlib.h */
 /* #undef NEED_MEMORY_H */
 
-/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
-/* #undef NEED_REENTRANT */
-
-/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
-/* #undef NEED_THREAD_SAFE */
-
-/* cpu-machine-OS */
-#define OS "i386-unknown-linux-gnu"
-
-/* Name of package */
-#define PACKAGE "c-ares"
-
-/* Define to the address where bug reports for this package should be sent. */
-#define PACKAGE_BUGREPORT "c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares"
-
-/* Define to the full name of this package. */
-#define PACKAGE_NAME "c-ares"
-
-/* Define to the full name and version of this package. */
-#define PACKAGE_STRING "c-ares -"
-
-/* Define to the one symbol short name of this package. */
-#define PACKAGE_TARNAME "c-ares"
-
-/* Define to the home page for this package. */
-#define PACKAGE_URL ""
-
-/* Define to the version of this package. */
-#define PACKAGE_VERSION "-"
-
 /* a suitable file/device to read random data from */
-#define RANDOM_FILE "/dev/urandom"
+/* #undef RANDOM_FILE */
 
 /* Define to the type qualifier pointed by arg 5 for recvfrom. */
 #define RECVFROM_QUAL_ARG5 
@@ -391,10 +354,10 @@
 #define RECVFROM_TYPE_ARG1 int
 
 /* Define to the type pointed by arg 2 for recvfrom. */
-#define RECVFROM_TYPE_ARG2 void
+#define RECVFROM_TYPE_ARG2 void *
 
 /* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
-#define RECVFROM_TYPE_ARG2_IS_VOID 1
+#define RECVFROM_TYPE_ARG2_IS_VOID 0
 
 /* Define to the type of arg 3 for recvfrom. */
 #define RECVFROM_TYPE_ARG3 size_t
@@ -403,16 +366,16 @@
 #define RECVFROM_TYPE_ARG4 int
 
 /* Define to the type pointed by arg 5 for recvfrom. */
-#define RECVFROM_TYPE_ARG5 struct sockaddr
+#define RECVFROM_TYPE_ARG5 struct sockaddr *
 
 /* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
-/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+#define RECVFROM_TYPE_ARG5_IS_VOID 0
 
 /* Define to the type pointed by arg 6 for recvfrom. */
-#define RECVFROM_TYPE_ARG6 socklen_t
+#define RECVFROM_TYPE_ARG6 socklen_t *
 
 /* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
-/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+#define RECVFROM_TYPE_ARG6_IS_VOID 0
 
 /* Define to the function return type for recvfrom. */
 #define RECVFROM_TYPE_RETV ssize_t
@@ -433,10 +396,10 @@
 #define RECV_TYPE_RETV ssize_t
 
 /* Define as the return type of signal handlers (`int' or `void'). */
-#define RETSIGTYPE void
+#define RETSIGTYPE 
 
 /* Define to the type qualifier of arg 2 for send. */
-#define SEND_QUAL_ARG2 const
+#define SEND_QUAL_ARG2 
 
 /* Define to the type of arg 1 for send. */
 #define SEND_TYPE_ARG1 int
@@ -453,66 +416,21 @@
 /* Define to the function return type for send. */
 #define SEND_TYPE_RETV ssize_t
 
-/* The size of `int', as computed by sizeof. */
-#define SIZEOF_INT 4
-
-/* The size of `long', as computed by sizeof. */
-#define SIZEOF_LONG 4
-
-/* The size of `short', as computed by sizeof. */
-#define SIZEOF_SHORT 2
-
-/* The size of `size_t', as computed by sizeof. */
-#define SIZEOF_SIZE_T 4
-
-/* The size of `struct in6_addr', as computed by sizeof. */
-#define SIZEOF_STRUCT_IN6_ADDR 16
-
-/* The size of `struct in_addr', as computed by sizeof. */
-#define SIZEOF_STRUCT_IN_ADDR 4
-
-/* The size of `time_t', as computed by sizeof. */
-#define SIZEOF_TIME_T 4
-
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
-#define TIME_WITH_SYS_TIME 1
+#define TIME_WITH_SYS_TIME
 
 /* Define to disable non-blocking sockets. */
-/* #undef USE_BLOCKING_SOCKETS */
-
-/* Version number of package */
-#define VERSION "-"
+#undef USE_BLOCKING_SOCKETS
 
 /* Define to avoid automatic inclusion of winsock.h */
-/* #undef WIN32_LEAN_AND_MEAN */
-
-/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
-   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-/* #  undef WORDS_BIGENDIAN */
-# endif
-#endif
-
-/* Define to 1 if OS is AIX. */
-#ifndef _ALL_SOURCE
-/* #  undef _ALL_SOURCE */
-#endif
+#undef WIN32_LEAN_AND_MEAN
 
-/* Enable large inode numbers on Mac OS X 10.5.  */
-#ifndef _DARWIN_USE_64_BIT_INODE
-# define _DARWIN_USE_64_BIT_INODE 1
-#endif
+/* Type to use in place of in_addr_t when system does not provide it. */
+#undef in_addr_t
 
 #ifdef GPR_BACKWARDS_COMPATIBILITY_MODE
-  /* Redefine the fd_set macros for GLIBC < 2.15 support.
+  /* IMPORTANT: gRPC MANUAL EDIT HERE!
+   * Redefine the fd_set macros for GLIBC < 2.15 support.
    * This is a backwards compatibility hack. At version 2.15, GLIBC introduces
    * the __fdelt_chk function, and starts using it within its fd_set macros
    * (which c-ares uses). For compatibility with GLIBC < 2.15, we need to redefine
@@ -538,21 +456,3 @@
   #define FD_ISSET(d, set) \
       ((GRPC_CARES_FDS_BITS (set)[ (d) / NFDBITS ] & GRPC_CARES_FD_MASK(d)) != 0)
 #endif /* GPR_BACKWARDS_COMPATIBILITY_MODE */
-
-/* Number of bits in a file offset, on hosts where this is settable. */
-/* #undef _FILE_OFFSET_BITS */
-
-/* Define for large files, on AIX-style hosts. */
-/* #undef _LARGE_FILES */
-
-/* Define to empty if `const' does not conform to ANSI C. */
-/* #undef const */
-
-/* Type to use in place of in_addr_t when system does not provide it. */
-/* #undef in_addr_t */
-
-/* Define to `unsigned int' if <sys/types.h> does not define. */
-/* #undef size_t */
-
-/* the signed version of size_t */
-/* #undef ssize_t */
diff --git a/third_party/gtest.BUILD b/third_party/gtest.BUILD
index b70f2c51bc..f38bfd8d45 100644
--- a/third_party/gtest.BUILD
+++ b/third_party/gtest.BUILD
@@ -2,14 +2,38 @@ cc_library(
     name = "gtest",
     srcs = [
         "googletest/src/gtest-all.cc",
-	"googlemock/src/gmock-all.cc"
     ],
-    hdrs = glob(["googletest/include/**/*.h", "googletest/src/*.cc", "googletest/src/*.h", "googlemock/include/**/*.h", "googlemock/src/*.cc", "googlemock/src/*.h"]),
+    hdrs = glob([
+        "googletest/include/**/*.h",
+        "googletest/src/*.cc",
+        "googletest/src/*.h",
+    ]),
     includes = [
         "googletest",
         "googletest/include",
-	"googlemock",
-	"googlemock/include",
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
+)
+
+cc_library(
+    name = "gmock",
+    srcs = [
+        "googlemock/src/gmock-all.cc"
+    ],
+    hdrs = glob([
+        "googlemock/include/**/*.h",
+        "googlemock/src/*.cc",
+        "googlemock/src/*.h"
+    ]),
+    includes = [
+        "googlemock",
+        "googlemock/include",
+    ],
+    deps = [
+        ":gtest",
     ],
     linkstatic = 1,
     visibility = [
diff --git a/third_party/rake-compiler-dock/Dockerfile b/third_party/rake-compiler-dock/Dockerfile
index e7165b7e69..b4a5158535 100644
--- a/third_party/rake-compiler-dock/Dockerfile
+++ b/third_party/rake-compiler-dock/Dockerfile
@@ -1,21 +1,16 @@
-FROM ubuntu:14.04
+FROM ubuntu:17.04
 
 RUN apt-get -y update && \
-    apt-get install -y curl git-core mingw-w64 xz-utils build-essential gcc-multilib wget unzip
-
-RUN mkdir -p /opt/mingw && \
-    curl -SL http://downloads.sourceforge.net/mingw-w64/i686-w64-mingw32-gcc-4.7.2-release-linux64_rubenvb.tar.xz | \
-    tar -xJC /opt/mingw && \
-    echo "export PATH=\$PATH:/opt/mingw/mingw32/bin" >> /etc/rubybashrc
-
-RUN mkdir -p /opt/mingw && \
-    curl -SL http://downloads.sourceforge.net/mingw-w64/x86_64-w64-mingw32-gcc-4.7.2-release-linux64_rubenvb.tar.xz | \
-    tar -xJC /opt/mingw && \
-    echo "export PATH=\$PATH:/opt/mingw/mingw64/bin" >> /etc/rubybashrc
+    apt-get install -y curl git-core xz-utils build-essential wget unzip sudo gpg dirmngr
 
 # Add "rvm" as system group, to avoid conflicts with host GIDs typically starting with 1000
 RUN groupadd -r rvm && useradd -r -g rvm -G sudo -p "" --create-home rvm && \
     echo "source /etc/profile.d/rvm.sh" >> /etc/rubybashrc
+
+USER root
+RUN apt-get -y update && \
+    apt-get install -y gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 g++-mingw-w64-x86-64 g++-mingw-w64-i686 \
+        gcc-multilib moreutils
 USER rvm
 
 # install rvm, RVM 1.26.0+ has signed releases, source rvm for usage outside of package scripts
@@ -178,12 +173,8 @@ RUN sed -i -- "s:/root/.rake-compiler:/usr/local/rake-compiler:g" /usr/local/rak
 # Install wrappers for strip commands as a workaround for "Protocol error" in boot2docker.
 RUN cp /tmp/build/strip_wrapper /root/
 RUN sudo chmod +rx /root/strip_wrapper
-RUN mv /opt/mingw/mingw32/bin/i686-w64-mingw32-strip /opt/mingw/mingw32/bin/i686-w64-mingw32-strip.bin && \
-    mv /opt/mingw/mingw64/bin/x86_64-w64-mingw32-strip /opt/mingw/mingw64/bin/x86_64-w64-mingw32-strip.bin && \
-    mv /usr/bin/i686-w64-mingw32-strip /usr/bin/i686-w64-mingw32-strip.bin && \
+RUN mv /usr/bin/i686-w64-mingw32-strip /usr/bin/i686-w64-mingw32-strip.bin && \
     mv /usr/bin/x86_64-w64-mingw32-strip /usr/bin/x86_64-w64-mingw32-strip.bin && \
-    ln /root/strip_wrapper /opt/mingw/mingw32/bin/i686-w64-mingw32-strip && \
-    ln /root/strip_wrapper /opt/mingw/mingw64/bin/x86_64-w64-mingw32-strip && \
     ln /root/strip_wrapper /usr/bin/i686-w64-mingw32-strip && \
     ln /root/strip_wrapper /usr/bin/x86_64-w64-mingw32-strip
 
diff --git a/tools/buildgen/generate_build_additions.sh b/tools/buildgen/generate_build_additions.sh
index 7649145f86..693c02fdb2 100644
--- a/tools/buildgen/generate_build_additions.sh
+++ b/tools/buildgen/generate_build_additions.sh
@@ -24,6 +24,7 @@ gen_build_yaml_dirs="  \
   test/core/bad_client \
   test/core/bad_ssl    \
   test/core/end2end    \
+  test/cpp/naming \
   test/cpp/qps"
 gen_build_files=""
 for gen_build_yaml in $gen_build_yaml_dirs
diff --git a/tools/buildgen/generate_projects.py b/tools/buildgen/generate_projects.py
index f885b26697..d29cd02152 100755
--- a/tools/buildgen/generate_projects.py
+++ b/tools/buildgen/generate_projects.py
@@ -34,6 +34,7 @@ argp.add_argument('build_files', nargs='+', default=[])
 argp.add_argument('--templates', nargs='+', default=[])
 argp.add_argument('--output_merged', default=None, type=str)
 argp.add_argument('--jobs', '-j', default=multiprocessing.cpu_count(), type=int)
+argp.add_argument('--base', default='.', type=str)
 args = argp.parse_args()
 
 json = args.build_files
@@ -69,7 +70,7 @@ jobs = []
 for template in reversed(sorted(templates)):
   root, f = os.path.split(template)
   if os.path.splitext(f)[1] == '.template':
-    out_dir = '.' + root[len('templates'):]
+    out_dir = args.base + root[len('templates'):]
     out = out_dir + '/' + os.path.splitext(f)[0]
     if not os.path.exists(out_dir):
       os.makedirs(out_dir)
@@ -84,7 +85,7 @@ for template in reversed(sorted(templates)):
       test[out] = tf[1]
       os.close(tf[0])
       cmd.append(test[out])
-    cmd.append(root + '/' + f)
+    cmd.append(args.base + '/' + root + '/' + f)
     jobs.append(jobset.JobSpec(cmd, shortname=out, timeout_seconds=None))
 
 jobset.run(pre_jobs, maxjobs=args.jobs)
diff --git a/tools/codegen/core/gen_hpack_tables.c b/tools/codegen/core/gen_hpack_tables.c
index 858ae20c2d..73dfa9fbd6 100644
--- a/tools/codegen/core/gen_hpack_tables.c
+++ b/tools/codegen/core/gen_hpack_tables.c
@@ -189,7 +189,10 @@ static unsigned state_index(unsigned bitofs, symset syms, unsigned *isnew) {
     return i;
   }
   GPR_ASSERT(nhuffstates != MAXHUFFSTATES);
-  i = nhuffstates++;
+ 
+  i = nhuffstates;
+  nhuffstates++;
+  
   huffstates[i].bitofs = bitofs;
   huffstates[i].syms = syms;
   huffstates[i].next = nibblelut_empty();
diff --git a/tools/codegen/core/gen_static_metadata.py b/tools/codegen/core/gen_static_metadata.py
index 339a82a497..af7521da36 100755
--- a/tools/codegen/core/gen_static_metadata.py
+++ b/tools/codegen/core/gen_static_metadata.py
@@ -33,6 +33,7 @@ CONFIG = [
     'host',
     'grpc-timeout',
     'grpc-internal-encoding-request',
+    'grpc-internal-stream-encoding-request',
     'grpc-payload-bin',
     ':path',
     'grpc-encoding',
@@ -89,6 +90,8 @@ CONFIG = [
     ('authorization', ''),
     ('cache-control', ''),
     ('content-disposition', ''),
+    ('content-encoding', 'identity'),
+    ('content-encoding', 'gzip'),
     ('content-encoding', ''),
     ('content-language', ''),
     ('content-length', ''),
@@ -129,26 +132,33 @@ CONFIG = [
     ('www-authenticate', ''),
 ]
 
+# Entries marked with is_default=True are ignored when counting
+# non-default initial metadata that prevents the chttp2 server from
+# sending a Trailers-Only response.
 METADATA_BATCH_CALLOUTS = [
-    ':path',
-    ':method',
-    ':status',
-    ':authority',
-    ':scheme',
-    'te',
-    'grpc-message',
-    'grpc-status',
-    'grpc-payload-bin',
-    'grpc-encoding',
-    'grpc-accept-encoding',
-    'grpc-server-stats-bin',
-    'grpc-tags-bin',
-    'grpc-trace-bin',
-    'content-type',
-    'grpc-internal-encoding-request',
-    'user-agent',
-    'host',
-    'lb-token',
+    # (name, is_default)
+    (':path', True),
+    (':method', True),
+    (':status', True),
+    (':authority', True),
+    (':scheme', True),
+    ('te', True),
+    ('grpc-message', True),
+    ('grpc-status', True),
+    ('grpc-payload-bin', True),
+    ('grpc-encoding', True),
+    ('grpc-accept-encoding', True),
+    ('grpc-server-stats-bin', True),
+    ('grpc-tags-bin', True),
+    ('grpc-trace-bin', True),
+    ('content-type', True),
+    ('content-encoding', True),
+    ('accept-encoding', True),
+    ('grpc-internal-encoding-request', True),
+    ('grpc-internal-stream-encoding-request', True),
+    ('user-agent', True),
+    ('host', True),
+    ('lb-token', True),
 ]
 
 COMPRESSION_ALGORITHMS = [
@@ -157,6 +167,10 @@ COMPRESSION_ALGORITHMS = [
     'gzip',
 ]
 
+STREAM_COMPRESSION_ALGORITHMS = [
+    'identity',
+    'gzip',
+]
 
 # utility: mangle the name of a config
 def mangle(elem, name=None):
@@ -225,7 +239,7 @@ all_elems = list()
 static_userdata = {}
 # put metadata batch callouts first, to make the check of if a static metadata
 # string is a callout trivial
-for elem in METADATA_BATCH_CALLOUTS:
+for elem, _ in METADATA_BATCH_CALLOUTS:
   if elem not in all_strs:
     all_strs.append(elem)
 for elem in CONFIG:
@@ -251,6 +265,18 @@ for mask in range(1, 1 << len(COMPRESSION_ALGORITHMS)):
     all_elems.append(elem)
   compression_elems.append(elem)
   static_userdata[elem] = 1 + (mask | 1)
+stream_compression_elems = []
+for mask in range(1, 1 << len(STREAM_COMPRESSION_ALGORITHMS)):
+  val = ','.join(STREAM_COMPRESSION_ALGORITHMS[alg]
+                 for alg in range(0, len(STREAM_COMPRESSION_ALGORITHMS))
+                 if (1 << alg) & mask)
+  elem = ('accept-encoding', val)
+  if val not in all_strs:
+    all_strs.append(val)
+  if elem not in all_elems:
+    all_elems.append(elem)
+  stream_compression_elems.append(elem)
+  static_userdata[elem] = 1 + (mask | 1)
 
 # output configuration
 args = sys.argv[1:]
@@ -344,13 +370,13 @@ for i, elem in enumerate(all_strs):
 
 
 def slice_def(i):
-  return ('{.refcount = &grpc_static_metadata_refcounts[%d], .data.refcounted ='
-          ' {g_bytes+%d, %d}}') % (
+  return ('{&grpc_static_metadata_refcounts[%d],'
+          ' {{g_bytes+%d, %d}}}') % (
       i, id2strofs[i], len(all_strs[i]))
 
 
 # validate configuration
-for elem in METADATA_BATCH_CALLOUTS:
+for elem, _ in METADATA_BATCH_CALLOUTS:
   assert elem in all_strs
 
 print >> H, '#define GRPC_STATIC_MDSTR_COUNT %d' % len(all_strs)
@@ -518,7 +544,7 @@ for a, b in all_elems:
 print >> C, '};'
 
 print >> H, 'typedef enum {'
-for elem in METADATA_BATCH_CALLOUTS:
+for elem, _ in METADATA_BATCH_CALLOUTS:
   print >> H, '  %s,' % mangle(elem, 'batch').upper()
 print >> H, '  GRPC_BATCH_CALLOUTS_COUNT'
 print >> H, '} grpc_metadata_batch_callouts_index;'
@@ -526,7 +552,7 @@ print >> H
 print >> H, 'typedef union {'
 print >> H, '  struct grpc_linked_mdelem *array[GRPC_BATCH_CALLOUTS_COUNT];'
 print >> H, '  struct {'
-for elem in METADATA_BATCH_CALLOUTS:
+for elem, _ in METADATA_BATCH_CALLOUTS:
   print >> H, '  struct grpc_linked_mdelem *%s;' % mangle(elem, '').lower()
 print >> H, '  } named;'
 print >> H, '} grpc_metadata_batch_callouts;'
@@ -534,6 +560,14 @@ print >> H
 print >> H, '#define GRPC_BATCH_INDEX_OF(slice) \\'
 print >> H, '  (GRPC_IS_STATIC_METADATA_STRING((slice)) ? (grpc_metadata_batch_callouts_index)GPR_CLAMP(GRPC_STATIC_METADATA_INDEX((slice)), 0, GRPC_BATCH_CALLOUTS_COUNT) : GRPC_BATCH_CALLOUTS_COUNT)'
 print >> H
+print >> H, ('extern bool grpc_static_callout_is_default['
+             'GRPC_BATCH_CALLOUTS_COUNT];')
+print >> H
+print >> C, 'bool grpc_static_callout_is_default[GRPC_BATCH_CALLOUTS_COUNT] = {'
+for elem, is_default in METADATA_BATCH_CALLOUTS:
+  print >> C, '  %s, // %s' % (str(is_default).lower(), elem)
+print >> C, '};'
+print >> C
 
 print >> H, 'extern const uint8_t grpc_static_accept_encoding_metadata[%d];' % (
     1 << len(COMPRESSION_ALGORITHMS))
@@ -544,6 +578,16 @@ print >> C, '};'
 print >> C
 
 print >> H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC))'
+print >> H
+
+print >> H, 'extern const uint8_t grpc_static_accept_stream_encoding_metadata[%d];' % (
+    1 << len(STREAM_COMPRESSION_ALGORITHMS))
+print >> C, 'const uint8_t grpc_static_accept_stream_encoding_metadata[%d] = {' % (
+    1 << len(STREAM_COMPRESSION_ALGORITHMS))
+print >> C, '0,%s' % ','.join('%d' % md_idx(elem) for elem in stream_compression_elems)
+print >> C, '};'
+
+print >> H, '#define GRPC_MDELEM_ACCEPT_STREAM_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_stream_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC))'
 
 print >> H, '#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */'
 
diff --git a/tools/codegen/core/gen_stats_data.py b/tools/codegen/core/gen_stats_data.py
new file mode 100755
index 0000000000..10ad0cc831
--- /dev/null
+++ b/tools/codegen/core/gen_stats_data.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python2.7
+
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import collections
+import ctypes
+import math
+import sys
+import yaml
+import json
+
+with open('src/core/lib/debug/stats_data.yaml') as f:
+  attrs = yaml.load(f.read())
+
+REQUIRED_FIELDS = ['name', 'doc']
+
+def make_type(name, fields):
+  return (collections.namedtuple(name, ' '.join(list(set(REQUIRED_FIELDS + fields)))), [])
+
+def c_str(s, encoding='ascii'):
+   if isinstance(s, unicode):
+      s = s.encode(encoding)
+   result = ''
+   for c in s:
+      if not (32 <= ord(c) < 127) or c in ('\\', '"'):
+         result += '\\%03o' % ord(c)
+      else:
+         result += c
+   return '"' + result + '"'
+
+types = (
+  make_type('Counter', []),
+  make_type('Histogram', ['max', 'buckets']),
+)
+
+inst_map = dict((t[0].__name__, t[1]) for t in types)
+
+stats = []
+
+for attr in attrs:
+  found = False
+  for t, lst in types:
+    t_name = t.__name__.lower()
+    if t_name in attr:
+      name = attr[t_name]
+      del attr[t_name]
+      lst.append(t(name=name, **attr))
+      found = True
+      break
+  assert found, "Bad decl: %s" % attr
+
+def dbl2u64(d):
+  return ctypes.c_ulonglong.from_buffer(ctypes.c_double(d)).value
+
+def shift_works_until(mapped_bounds, shift_bits):
+  for i, ab in enumerate(zip(mapped_bounds, mapped_bounds[1:])):
+    a, b = ab
+    if (a >> shift_bits) == (b >> shift_bits):
+      return i
+  return len(mapped_bounds)
+
+def find_ideal_shift(mapped_bounds, max_size):
+  best = None
+  for shift_bits in reversed(range(0,64)):
+    n = shift_works_until(mapped_bounds, shift_bits)
+    if n == 0: continue
+    table_size = mapped_bounds[n-1] >> shift_bits
+    if table_size > max_size: continue
+    if table_size > 65535: continue
+    if best is None:
+      best = (shift_bits, n, table_size)
+    elif best[1] < n:
+      best = (shift_bits, n, table_size)
+  print best
+  return best
+
+def gen_map_table(mapped_bounds, shift_data):
+  tbl = []
+  cur = 0
+  print mapped_bounds
+  mapped_bounds = [x >> shift_data[0] for x in mapped_bounds]
+  print mapped_bounds
+  for i in range(0, mapped_bounds[shift_data[1]-1]):
+    while i > mapped_bounds[cur]:
+      cur += 1
+    tbl.append(cur)
+  return tbl
+
+static_tables = []
+
+def decl_static_table(values, type):
+  global static_tables
+  v = (type, values)
+  for i, vp in enumerate(static_tables):
+    if v == vp: return i
+  print "ADD TABLE: %s %r" % (type, values)
+  r = len(static_tables)
+  static_tables.append(v)
+  return r
+
+def type_for_uint_table(table):
+  mv = max(table)
+  if mv < 2**8:
+    return 'uint8_t'
+  elif mv < 2**16:
+    return 'uint16_t'
+  elif mv < 2**32:
+    return 'uint32_t'
+  else:
+    return 'uint64_t'
+
+def gen_bucket_code(histogram):
+  bounds = [0, 1]
+  done_trivial = False
+  done_unmapped = False
+  first_nontrivial = None
+  first_unmapped = None
+  while len(bounds) < histogram.buckets + 1:
+    if len(bounds) == histogram.buckets:
+      nextb = int(histogram.max)
+    else:
+      mul = math.pow(float(histogram.max) / bounds[-1],
+                     1.0 / (histogram.buckets + 1 - len(bounds)))
+      nextb = int(math.ceil(bounds[-1] * mul))
+    if nextb <= bounds[-1] + 1:
+      nextb = bounds[-1] + 1
+    elif not done_trivial:
+      done_trivial = True
+      first_nontrivial = len(bounds)
+    bounds.append(nextb)
+  bounds_idx = decl_static_table(bounds, 'int')
+  if done_trivial:
+    first_nontrivial_code = dbl2u64(first_nontrivial)
+    code_bounds = [dbl2u64(x) - first_nontrivial_code for x in bounds]
+    shift_data = find_ideal_shift(code_bounds[first_nontrivial:], 256 * histogram.buckets)
+  #print first_nontrivial, shift_data, bounds
+  #if shift_data is not None: print [hex(x >> shift_data[0]) for x in code_bounds[first_nontrivial:]]
+  code = '\n/* Automatically generated by tools/codegen/core/gen_stats_data.py */\n'
+  code += 'value = GPR_CLAMP(value, 0, %d);\n' % histogram.max
+  map_table = gen_map_table(code_bounds[first_nontrivial:], shift_data)
+  if first_nontrivial is None:
+    code += ('GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_%s, value);\n'
+             % histogram.name.upper())
+  else:
+    code += 'if (value < %d) {\n' % first_nontrivial
+    code += ('GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_%s, value);\n'
+             % histogram.name.upper())
+    code += 'return;\n'
+    code += '}'
+    first_nontrivial_code = dbl2u64(first_nontrivial)
+    if shift_data is not None:
+      map_table_idx = decl_static_table(map_table, type_for_uint_table(map_table))
+      code += 'union { double dbl; uint64_t uint; } _val, _bkt;\n'
+      code += '_val.dbl = value;\n'
+      code += 'if (_val.uint < %dull) {\n' % ((map_table[-1] << shift_data[0]) + first_nontrivial_code)
+      code += 'int bucket = '
+      code += 'grpc_stats_table_%d[((_val.uint - %dull) >> %d)] + %d;\n' % (map_table_idx, first_nontrivial_code, shift_data[0], first_nontrivial)
+      code += '_bkt.dbl = grpc_stats_table_%d[bucket];\n' % bounds_idx
+      code += 'bucket -= (_val.uint < _bkt.uint);\n'
+      code += 'GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_%s, bucket);\n' % histogram.name.upper()
+      code += 'return;\n'
+      code += '}\n'
+    code += 'GRPC_STATS_INC_HISTOGRAM((exec_ctx), GRPC_STATS_HISTOGRAM_%s, '% histogram.name.upper()
+    code += 'grpc_stats_histo_find_bucket_slow((exec_ctx), value, grpc_stats_table_%d, %d));\n' % (bounds_idx, histogram.buckets)
+  return (code, bounds_idx)
+
+# utility: print a big comment block into a set of files
+def put_banner(files, banner):
+  for f in files:
+    print >>f, '/*'
+    for line in banner:
+      print >>f, ' * %s' % line
+    print >>f, ' */'
+    print >>f
+
+with open('src/core/lib/debug/stats_data.h', 'w') as H:
+  # copy-paste copyright notice from this file
+  with open(sys.argv[0]) as my_source:
+    copyright = []
+    for line in my_source:
+      if line[0] != '#': break
+    for line in my_source:
+      if line[0] == '#':
+        copyright.append(line)
+        break
+    for line in my_source:
+      if line[0] != '#':
+        break
+      copyright.append(line)
+    put_banner([H], [line[2:].rstrip() for line in copyright])
+
+  put_banner([H], ["Automatically generated by tools/codegen/core/gen_stats_data.py"])
+
+  print >>H, "#ifndef GRPC_CORE_LIB_DEBUG_STATS_DATA_H"
+  print >>H, "#define GRPC_CORE_LIB_DEBUG_STATS_DATA_H"
+  print >>H
+  print >>H, "#include <inttypes.h>"
+  print >>H, "#include \"src/core/lib/iomgr/exec_ctx.h\""
+  print >>H
+
+  for typename, instances in sorted(inst_map.items()):
+    print >>H, "typedef enum {"
+    for inst in instances:
+      print >>H, "  GRPC_STATS_%s_%s," % (typename.upper(), inst.name.upper())
+    print >>H, "  GRPC_STATS_%s_COUNT" % (typename.upper())
+    print >>H, "} grpc_stats_%ss;" % (typename.lower())
+    print >>H, "extern const char *grpc_stats_%s_name[GRPC_STATS_%s_COUNT];" % (
+        typename.lower(), typename.upper())
+    print >>H, "extern const char *grpc_stats_%s_doc[GRPC_STATS_%s_COUNT];" % (
+        typename.lower(), typename.upper())
+
+  histo_start = []
+  histo_buckets = []
+  histo_bucket_boundaries = []
+
+  print >>H, "typedef enum {"
+  first_slot = 0
+  for histogram in inst_map['Histogram']:
+    histo_start.append(first_slot)
+    histo_buckets.append(histogram.buckets)
+    print >>H, "  GRPC_STATS_HISTOGRAM_%s_FIRST_SLOT = %d," % (histogram.name.upper(), first_slot)
+    print >>H, "  GRPC_STATS_HISTOGRAM_%s_BUCKETS = %d," % (histogram.name.upper(), histogram.buckets)
+    first_slot += histogram.buckets
+  print >>H, "  GRPC_STATS_HISTOGRAM_BUCKETS = %d" % first_slot
+  print >>H, "} grpc_stats_histogram_constants;"
+
+  for ctr in inst_map['Counter']:
+    print >>H, ("#define GRPC_STATS_INC_%s(exec_ctx) " +
+                "GRPC_STATS_INC_COUNTER((exec_ctx), GRPC_STATS_COUNTER_%s)") % (
+                ctr.name.upper(), ctr.name.upper())
+  for histogram in inst_map['Histogram']:
+    print >>H, "#define GRPC_STATS_INC_%s(exec_ctx, value) grpc_stats_inc_%s((exec_ctx), (int)(value))" % (
+        histogram.name.upper(), histogram.name.lower())
+    print >>H, "void grpc_stats_inc_%s(grpc_exec_ctx *exec_ctx, int x);" % histogram.name.lower()
+
+  for i, tbl in enumerate(static_tables):
+    print >>H, "extern const %s grpc_stats_table_%d[%d];" % (tbl[0], i, len(tbl[1]))
+
+  print >>H, "extern const int grpc_stats_histo_buckets[%d];" % len(inst_map['Histogram'])
+  print >>H, "extern const int grpc_stats_histo_start[%d];" % len(inst_map['Histogram'])
+  print >>H, "extern const int *const grpc_stats_histo_bucket_boundaries[%d];" % len(inst_map['Histogram'])
+  print >>H, "extern void (*const grpc_stats_inc_histogram[%d])(grpc_exec_ctx *exec_ctx, int x);" % len(inst_map['Histogram'])
+
+  print >>H
+  print >>H, "#endif /* GRPC_CORE_LIB_DEBUG_STATS_DATA_H */"
+
+with open('src/core/lib/debug/stats_data.c', 'w') as C:
+  # copy-paste copyright notice from this file
+  with open(sys.argv[0]) as my_source:
+    copyright = []
+    for line in my_source:
+      if line[0] != '#': break
+    for line in my_source:
+      if line[0] == '#':
+        copyright.append(line)
+        break
+    for line in my_source:
+      if line[0] != '#':
+        break
+      copyright.append(line)
+    put_banner([C], [line[2:].rstrip() for line in copyright])
+
+  put_banner([C], ["Automatically generated by tools/codegen/core/gen_stats_data.py"])
+
+  print >>C, "#include \"src/core/lib/debug/stats_data.h\""
+  print >>C, "#include \"src/core/lib/debug/stats.h\""
+  print >>C, "#include \"src/core/lib/iomgr/exec_ctx.h\""
+  print >>C, "#include <grpc/support/useful.h>"
+
+  histo_code = []
+  for histogram in inst_map['Histogram']:
+    code, bounds_idx = gen_bucket_code(histogram)
+    histo_bucket_boundaries.append(bounds_idx)
+    histo_code.append(code)
+
+  for typename, instances in sorted(inst_map.items()):
+    print >>C, "const char *grpc_stats_%s_name[GRPC_STATS_%s_COUNT] = {" % (
+        typename.lower(), typename.upper())
+    for inst in instances:
+      print >>C, "  %s," % c_str(inst.name)
+    print >>C, "};"
+    print >>C, "const char *grpc_stats_%s_doc[GRPC_STATS_%s_COUNT] = {" % (
+        typename.lower(), typename.upper())
+    for inst in instances:
+      print >>C, "  %s," % c_str(inst.doc)
+    print >>C, "};"
+
+  for i, tbl in enumerate(static_tables):
+    print >>C, "const %s grpc_stats_table_%d[%d] = {%s};" % (
+        tbl[0], i, len(tbl[1]), ','.join('%s' % x for x in tbl[1]))
+
+  for histogram, code in zip(inst_map['Histogram'], histo_code):
+    print >>C, ("void grpc_stats_inc_%s(grpc_exec_ctx *exec_ctx, int value) {%s}") % (
+                histogram.name.lower(),
+                code)
+
+  print >>C, "const int grpc_stats_histo_buckets[%d] = {%s};" % (
+      len(inst_map['Histogram']), ','.join('%s' % x for x in histo_buckets))
+  print >>C, "const int grpc_stats_histo_start[%d] = {%s};" % (
+      len(inst_map['Histogram']), ','.join('%s' % x for x in histo_start))
+  print >>C, "const int *const grpc_stats_histo_bucket_boundaries[%d] = {%s};" % (
+      len(inst_map['Histogram']), ','.join('grpc_stats_table_%d' % x for x in histo_bucket_boundaries))
+  print >>C, "void (*const grpc_stats_inc_histogram[%d])(grpc_exec_ctx *exec_ctx, int x) = {%s};" % (
+      len(inst_map['Histogram']), ','.join('grpc_stats_inc_%s' % histogram.name.lower() for histogram in inst_map['Histogram']))
+
+# patch qps_test bigquery schema
+RECORD_EXPLICIT_PERCENTILES = [50, 95, 99]
+
+with open('tools/run_tests/performance/scenario_result_schema.json', 'r') as f:
+  qps_schema = json.loads(f.read())
+
+def FindNamed(js, name):
+  for el in js:
+    if el['name'] == name:
+      return el
+
+def RemoveCoreFields(js):
+  new_fields = []
+  for field in js['fields']:
+    if not field['name'].startswith('core_'):
+      new_fields.append(field)
+  js['fields'] = new_fields
+
+RemoveCoreFields(FindNamed(qps_schema, 'clientStats'))
+RemoveCoreFields(FindNamed(qps_schema, 'serverStats'))
+
+def AddCoreFields(js):
+  for counter in inst_map['Counter']:
+    js['fields'].append({
+      'name': 'core_%s' % counter.name,
+      'type': 'INTEGER',
+      'mode': 'NULLABLE'
+    })
+  for histogram in inst_map['Histogram']:
+    js['fields'].append({
+      'name': 'core_%s' % histogram.name,
+      'type': 'STRING',
+      'mode': 'NULLABLE'
+    })
+    js['fields'].append({
+      'name': 'core_%s_bkts' % histogram.name,
+      'type': 'STRING',
+      'mode': 'NULLABLE'
+    })
+    for pctl in RECORD_EXPLICIT_PERCENTILES:
+      js['fields'].append({
+        'name': 'core_%s_%dp' % (histogram.name, pctl),
+        'type': 'FLOAT',
+        'mode': 'NULLABLE'
+      })
+
+AddCoreFields(FindNamed(qps_schema, 'clientStats'))
+AddCoreFields(FindNamed(qps_schema, 'serverStats'))
+
+with open('tools/run_tests/performance/scenario_result_schema.json', 'w') as f:
+  f.write(json.dumps(qps_schema, indent=2, sort_keys=True))
+
+# and generate a helper script to massage scenario results into the format we'd
+# like to query
+with open('tools/run_tests/performance/massage_qps_stats.py', 'w') as P:
+  with open(sys.argv[0]) as my_source:
+    for line in my_source:
+      if line[0] != '#': break
+    for line in my_source:
+      if line[0] == '#':
+        print >>P, line.rstrip()
+        break
+    for line in my_source:
+      if line[0] != '#':
+        break
+      print >>P, line.rstrip()
+
+  print >>P
+  print >>P, '# Autogenerated by tools/codegen/core/gen_stats_data.py'
+  print >>P
+
+  print >>P, 'import massage_qps_stats_helpers'
+
+  print >>P, 'def massage_qps_stats(scenario_result):'
+  print >>P, '  for stats in scenario_result["serverStats"] + scenario_result["clientStats"]:'
+  print >>P, '    if "coreStats" not in stats: return'
+  print >>P, '    core_stats = stats["coreStats"]'
+  print >>P, '    del stats["coreStats"]'
+  for counter in inst_map['Counter']:
+    print >>P, '    stats["core_%s"] = massage_qps_stats_helpers.counter(core_stats, "%s")' % (counter.name, counter.name)
+  for i, histogram in enumerate(inst_map['Histogram']):
+    print >>P, '    h = massage_qps_stats_helpers.histogram(core_stats, "%s")' % histogram.name
+    print >>P, '    stats["core_%s"] = ",".join("%%f" %% x for x in h.buckets)' % histogram.name
+    print >>P, '    stats["core_%s_bkts"] = ",".join("%%f" %% x for x in h.boundaries)' % histogram.name
+    for pctl in RECORD_EXPLICIT_PERCENTILES:
+      print >>P, '    stats["core_%s_%dp"] = massage_qps_stats_helpers.percentile(h.buckets, %d, h.boundaries)' % (
+          histogram.name, pctl, pctl)
+
+with open('src/core/lib/debug/stats_data_bq_schema.sql', 'w') as S:
+  columns = []
+  for counter in inst_map['Counter']:
+    columns.append(('%s_per_iteration' % counter.name, 'FLOAT'))
+  print >>S, ',\n'.join('%s:%s' % x for x in columns)
diff --git a/tools/distrib/check_vsprojects.py b/tools/distrib/check_vsprojects.py
deleted file mode 100755
index 2a2fff1a42..0000000000
--- a/tools/distrib/check_vsprojects.py
+++ /dev/null
@@ -1,69 +0,0 @@
-#!/usr/bin/env python2.7
-
-# Copyright 2016 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-import re
-import sys
-
-from lxml import etree
-
-
-def main():
-  root_dir = os.path.abspath(
-      os.path.join(os.path.dirname(sys.argv[0]), '../..'))
-  os.chdir(root_dir)
-
-  project_re = re.compile('Project\(.*\) = ".+", "(.+)", "(.+)"')
-
-  known_projects = {}
-  with open(os.path.join('vsprojects', 'grpc.sln')) as f:
-    for line in f.readlines():
-      m = project_re.match(line)
-      if not m:
-        continue
-
-      vcxproj_path, project_guid = m.groups()
-      if os.name != 'nt':
-        vcxproj_path = vcxproj_path.replace('\\', '/')
-
-      known_projects[project_guid] = vcxproj_path
-
-  ok = True
-  for vcxproj_path in known_projects.values():
-    with open(os.path.join(root_dir, 'vsprojects', vcxproj_path)) as f:
-      tree = etree.parse(f)
-
-    namespaces = {'ns': 'http://schemas.microsoft.com/developer/msbuild/2003'}
-    referenced_projects = tree.getroot().xpath('/ns:Project/ns:ItemGroup'
-                                               '/ns:ProjectReference'
-                                               '/ns:Project',
-                                               namespaces=namespaces)
-    for referenced_project in referenced_projects:
-      # Project tag under ProjectReference is a GUID reference.
-      if referenced_project.text not in known_projects:
-        target_vcxproj = referenced_project.getparent().attrib['Include']
-        guid = referenced_project.text
-        print ('In project "%s", dependency "%s" (with GUID "%s") is not in '
-               'grpc.sln' % (vcxproj_path, target_vcxproj, guid))
-        ok = False
-
-  if not ok:
-    exit(1)
-
-
-if __name__ == '__main__':
-  main()
-
diff --git a/tools/distrib/docker_for_windows.rb b/tools/distrib/docker_for_windows.rb
index b5cd57f1f0..010e2067b8 100755
--- a/tools/distrib/docker_for_windows.rb
+++ b/tools/distrib/docker_for_windows.rb
@@ -23,11 +23,21 @@ def docker_for_windows_image()
   dockerfile = File.join(grpc_root, 'third_party', 'rake-compiler-dock', 'Dockerfile') 
   dockerpath = File.dirname(dockerfile)
   version = Digest::SHA1.file(dockerfile).hexdigest
-  image_name = 'grpc/rake-compiler-dock:' + version
-  cmd = "docker build -t #{image_name} --file #{dockerfile} #{dockerpath}"
-  puts cmd
-  system cmd
-  raise "Failed to build the docker image." unless $? == 0
+  image_name = 'rake-compiler-dock_' + version
+  # if "DOCKERHUB_ORGANIZATION" env is set, we try to pull the pre-built
+  # rake-compiler-dock image from dockerhub rather then building from scratch.
+  if ENV.has_key?('DOCKERHUB_ORGANIZATION')
+    image_name = ENV['DOCKERHUB_ORGANIZATION'] + '/' + image_name
+    cmd = "docker pull #{image_name}"
+    puts cmd
+    system cmd
+    raise "Failed to pull the docker image." unless $? == 0
+  else
+    cmd = "docker build -t #{image_name} --file #{dockerfile} #{dockerpath}"
+    puts cmd
+    system cmd
+    raise "Failed to build the docker image." unless $? == 0
+  end
   image_name
 end
 
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index 5c0329bff0..e0e9226211 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -47,7 +47,7 @@ CLASSIFIERS = [
     'Programming Language :: Python :: 3.5',
     'Programming Language :: Python :: 3.6',
     'License :: OSI Approved :: Apache Software License',
-],
+]
 
 PY3 = sys.version_info.major == 3
 
diff --git a/tools/dockerfile/distribtest/cpp_jessie_x64/Dockerfile b/tools/dockerfile/distribtest/cpp_jessie_x64/Dockerfile
index ff66bca0ae..0e8186d40c 100644
--- a/tools/dockerfile/distribtest/cpp_jessie_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/cpp_jessie_x64/Dockerfile
@@ -27,4 +27,6 @@ RUN apt-get update && apt-get install -y \
       pkg-config \
       unzip && apt-get clean
 
+RUN apt-get update && apt-get install -y cmake golang && apt-get clean
+
 CMD ["bash"]
diff --git a/tools/dockerfile/distribtest/csharp_jessie_x64/Dockerfile b/tools/dockerfile/distribtest/csharp_jessie_x64/Dockerfile
index d13eecaa55..02ec4c278a 100644
--- a/tools/dockerfile/distribtest/csharp_jessie_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/csharp_jessie_x64/Dockerfile
@@ -14,18 +14,15 @@
 
 FROM debian:jessie
 
-RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy main" | tee /etc/apt/sources.list.d/mono-xamarin.list
+RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+RUN echo "deb http://download.mono-project.com/repo/debian jessie main" | tee /etc/apt/sources.list.d/mono-official.list
 RUN echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
 RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libtiff-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
 
 RUN apt-get update && apt-get install -y \
     mono-devel \
     ca-certificates-mono \
-    nuget
+    nuget \
+    && apt-get clean
 
-# make sure we have nuget 2.12+ (in case there's an older cached docker image)
-RUN apt-get update && apt-get install -y nuget
-
-RUN apt-get update && apt-get install -y unzip
+RUN apt-get update && apt-get install -y unzip && apt-get clean
diff --git a/tools/dockerfile/distribtest/csharp_jessie_x86/Dockerfile b/tools/dockerfile/distribtest/csharp_jessie_x86/Dockerfile
index 71845b590b..758f314572 100644
--- a/tools/dockerfile/distribtest/csharp_jessie_x86/Dockerfile
+++ b/tools/dockerfile/distribtest/csharp_jessie_x86/Dockerfile
@@ -14,18 +14,15 @@
 
 FROM 32bit/debian:jessie
 
-RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy main" | tee /etc/apt/sources.list.d/mono-xamarin.list
+RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+RUN echo "deb http://download.mono-project.com/repo/debian jessie main" | tee /etc/apt/sources.list.d/mono-official.list
 RUN echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
 RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libtiff-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
 
 RUN apt-get update && apt-get install -y \
     mono-devel \
     ca-certificates-mono \
-    nuget
+    nuget \
+    && apt-get clean
 
-# make sure we have nuget 2.12+ (in case there's an older cached docker image)
-RUN apt-get update && apt-get install -y nuget
-
-RUN apt-get update && apt-get install -y unzip
+RUN apt-get update && apt-get install -y unzip && apt-get clean
diff --git a/tools/dockerfile/distribtest/csharp_ubuntu1604_x64/Dockerfile b/tools/dockerfile/distribtest/csharp_ubuntu1604_x64/Dockerfile
index 6604caa42c..0f40f18e38 100644
--- a/tools/dockerfile/distribtest/csharp_ubuntu1604_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/csharp_ubuntu1604_x64/Dockerfile
@@ -17,11 +17,16 @@ FROM ubuntu:16.04
 RUN apt-get update && apt-get install -y \
     mono-devel \
     ca-certificates-mono \
-    nuget
+    nuget \
+    && apt-get clean
 
 # make sure we have nuget 2.12+ (in case there's an older cached docker image)
 RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
 RUN echo "deb http://download.mono-project.com/repo/debian wheezy main" | tee /etc/apt/sources.list.d/mono-xamarin.list
-RUN apt-get update && apt-get install -y nuget
+RUN apt-get update && apt-get install -y nuget && apt-get clean
 
-RUN apt-get update && apt-get install -y unzip
+# Prevent "Error: SendFailure (Error writing headers)" when fetching nuget packages
+# See https://github.com/tianon/docker-brew-ubuntu-core/issues/86
+RUN apt-get update && apt-get install -y tzdata && apt-get clean
+
+RUN apt-get update && apt-get install -y unzip && apt-get clean
diff --git a/tools/dockerfile/grpc_clang_format/Dockerfile b/tools/dockerfile/grpc_clang_format/Dockerfile
index 647cb52a7b..dff07feeb6 100644
--- a/tools/dockerfile/grpc_clang_format/Dockerfile
+++ b/tools/dockerfile/grpc_clang_format/Dockerfile
@@ -12,12 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:15.10
+FROM debian:jessie
 
 RUN apt-get update && apt-get -y install wget
-RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
 RUN apt-get update && apt-get -y install clang-format-3.8
 
 ADD clang_format_all_the_things.sh /
diff --git a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
index 4f7a35ec70..c471344157 100755
--- a/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
+++ b/tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh
@@ -29,7 +29,7 @@ for dir in $DIRS
 do
   for glob in $GLOB
   do
-    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc`"
+    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc -and -not -name end2end_tests.c -and -not -name end2end_nosec_tests.c`"
   done
 done
 
diff --git a/tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile
index 4ccfbc43c3..dbf58023c5 100644
--- a/tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_csharp/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -61,7 +62,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #================
 # C# dependencies
diff --git a/tools/dockerfile/interoptest/grpc_interop_cxx/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_cxx/Dockerfile
index 824ecf4604..7cfe98cbc8 100644
--- a/tools/dockerfile/interoptest/grpc_interop_cxx/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_cxx/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -61,7 +62,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
index 5f7bedde73..febe2fa251 100644
--- a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
@@ -30,7 +30,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/dockerfile/interoptest/grpc_interop_go1.7/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_go1.7/Dockerfile
index 2bfa87c4ea..3a516cbb62 100644
--- a/tools/dockerfile/interoptest/grpc_interop_go1.7/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_go1.7/Dockerfile
@@ -30,7 +30,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/dockerfile/interoptest/grpc_interop_go1.8/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_go1.8/Dockerfile
index 96391372ca..acb640a81d 100644
--- a/tools/dockerfile/interoptest/grpc_interop_go1.8/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_go1.8/Dockerfile
@@ -30,7 +30,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
index 27a924343f..354b7bfdb5 100644
--- a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
@@ -30,7 +30,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 RUN pip install twisted h2==2.6.1 hyper
 
diff --git a/tools/dockerfile/interoptest/grpc_interop_java/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_java/Dockerfile
index 264a0f9271..92a542ff76 100644
--- a/tools/dockerfile/interoptest/grpc_interop_java/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_java/Dockerfile
@@ -45,7 +45,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 
 # Trigger download of as many Gradle artifacts as possible.
diff --git a/tools/dockerfile/interoptest/grpc_interop_java_oracle8/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_java_oracle8/Dockerfile
index 264a0f9271..92a542ff76 100644
--- a/tools/dockerfile/interoptest/grpc_interop_java_oracle8/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_java_oracle8/Dockerfile
@@ -45,7 +45,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 
 # Trigger download of as many Gradle artifacts as possible.
diff --git a/tools/dockerfile/interoptest/grpc_interop_node/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_node/Dockerfile
index c59b12d155..4343d56cb4 100644
--- a/tools/dockerfile/interoptest/grpc_interop_node/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_node/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -61,7 +62,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #==================
 # Node dependencies
diff --git a/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
index f859a46514..d6e229f84a 100644
--- a/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_php/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
diff --git a/tools/dockerfile/interoptest/grpc_interop_python/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_python/Dockerfile
index 42b1107c11..271c6e75e9 100644
--- a/tools/dockerfile/interoptest/grpc_interop_python/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_python/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -61,7 +62,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
diff --git a/tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile
index 3c744b434e..7bcada68e0 100644
--- a/tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_ruby/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -61,7 +62,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #==================
 # Ruby dependencies
diff --git a/tools/dockerfile/push_testing_images.sh b/tools/dockerfile/push_testing_images.sh
index c88ba434f5..e9151303f7 100755
--- a/tools/dockerfile/push_testing_images.sh
+++ b/tools/dockerfile/push_testing_images.sh
@@ -29,7 +29,7 @@ cd -
 
 DOCKERHUB_ORGANIZATION=grpctesting
 
-for DOCKERFILE_DIR in tools/dockerfile/test/* tools/dockerfile/grpc_artifact_* tools/dockerfile/interoptest/*
+for DOCKERFILE_DIR in tools/dockerfile/test/* tools/dockerfile/grpc_artifact_* tools/dockerfile/interoptest/* third_party/rake-compiler-dock
 do
   # Generate image name based on Dockerfile checksum. That works well as long
   # as can count on dockerfiles being written in a way that changing the logical 
diff --git a/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile b/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile
deleted file mode 100644
index 4ccfbc43c3..0000000000
--- a/tools/dockerfile/test/csharp_coreclr_x64/Dockerfile
+++ /dev/null
@@ -1,114 +0,0 @@
-# Copyright 2015 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-FROM debian:jessie
-
-# Install Git and basic packages.
-RUN apt-get update && apt-get install -y \
-  autoconf \
-  autotools-dev \
-  build-essential \
-  bzip2 \
-  ccache \
-  curl \
-  gcc \
-  gcc-multilib \
-  git \
-  golang \
-  gyp \
-  lcov \
-  libc6 \
-  libc6-dbg \
-  libc6-dev \
-  libgtest-dev \
-  libtool \
-  make \
-  perl \
-  strace \
-  python-dev \
-  python-setuptools \
-  python-yaml \
-  telnet \
-  unzip \
-  wget \
-  zip && apt-get clean
-
-#================
-# Build profiling
-RUN apt-get update && apt-get install -y time && apt-get clean
-
-#====================
-# Python dependencies
-
-# Install dependencies
-
-RUN apt-get update && apt-get install -y \
-    python-all-dev \
-    python3-all-dev \
-    python-pip
-
-# Install Python packages from PyPI
-RUN pip install pip --upgrade
-RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
-
-#================
-# C# dependencies
-
-# Update to a newer version of mono
-RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
-RUN echo "deb http://download.mono-project.com/repo/debian jessie main" | tee /etc/apt/sources.list.d/mono-official.list
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
-RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
-
-# Install dependencies
-RUN apt-get update && apt-get -y dist-upgrade && apt-get install -y \
-    mono-devel \
-    ca-certificates-mono \
-    nuget \
-    && apt-get clean
-
-RUN nuget update -self
-
-# Install dotnet SDK based on https://www.microsoft.com/net/core#debian
-RUN apt-get update && apt-get install -y curl libunwind8 gettext
-# dotnet-dev-1.0.0-preview2-003131
-RUN curl -sSL -o dotnet100.tar.gz https://go.microsoft.com/fwlink/?LinkID=827530
-RUN mkdir -p /opt/dotnet && tar zxf dotnet100.tar.gz -C /opt/dotnet
-# dotnet-dev-1.0.1
-RUN curl -sSL -o dotnet101.tar.gz https://go.microsoft.com/fwlink/?LinkID=843453
-RUN mkdir -p /opt/dotnet && tar zxf dotnet101.tar.gz -C /opt/dotnet
-RUN ln -s /opt/dotnet/dotnet /usr/local/bin
-
-# Trigger the population of the local package cache
-ENV NUGET_XMLDOC_MODE skip
-RUN mkdir warmup \
-    && cd warmup \
-    && dotnet new \
-    && cd .. \
-    && rm -rf warmup
-
-# Prepare ccache
-RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
-RUN ln -s /usr/bin/ccache /usr/local/bin/g++
-RUN ln -s /usr/bin/ccache /usr/local/bin/cc
-RUN ln -s /usr/bin/ccache /usr/local/bin/c++
-RUN ln -s /usr/bin/ccache /usr/local/bin/clang
-RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
-
-
-RUN mkdir /var/local/jenkins
-
-# Define the default command.
-CMD ["bash"]
diff --git a/tools/dockerfile/test/csharp_jessie_x64/Dockerfile b/tools/dockerfile/test/csharp_jessie_x64/Dockerfile
index 60dc7eb21a..40d46fcf58 100644
--- a/tools/dockerfile/test/csharp_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/csharp_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #================
 # C# dependencies
diff --git a/tools/dockerfile/test/cxx_jessie_x64/Dockerfile b/tools/dockerfile/test/cxx_jessie_x64/Dockerfile
index f9622dd757..888a37baca 100644
--- a/tools/dockerfile/test/cxx_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/cxx_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/test/cxx_jessie_x86/Dockerfile b/tools/dockerfile/test/cxx_jessie_x86/Dockerfile
index 2d396ce2ff..319f1e1889 100644
--- a/tools/dockerfile/test/cxx_jessie_x86/Dockerfile
+++ b/tools/dockerfile/test/cxx_jessie_x86/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/test/cxx_ubuntu1404_x64/Dockerfile b/tools/dockerfile/test/cxx_ubuntu1404_x64/Dockerfile
index 349a6eff83..61f005d9da 100644
--- a/tools/dockerfile/test/cxx_ubuntu1404_x64/Dockerfile
+++ b/tools/dockerfile/test/cxx_ubuntu1404_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/test/cxx_ubuntu1604_x64/Dockerfile b/tools/dockerfile/test/cxx_ubuntu1604_x64/Dockerfile
index bccfdba7cd..f35247eccb 100644
--- a/tools/dockerfile/test/cxx_ubuntu1604_x64/Dockerfile
+++ b/tools/dockerfile/test/cxx_ubuntu1604_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/test/fuzzer/Dockerfile b/tools/dockerfile/test/fuzzer/Dockerfile
index 94c37b3f63..ce1badfeb1 100644
--- a/tools/dockerfile/test/fuzzer/Dockerfile
+++ b/tools/dockerfile/test/fuzzer/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # C++ dependencies
diff --git a/tools/dockerfile/test/multilang_jessie_x64/Dockerfile b/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
index b7373b5d9c..59fe4d8f93 100644
--- a/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -122,7 +123,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Install coverage for Python test coverage reporting
 RUN pip install coverage
diff --git a/tools/dockerfile/test/node_jessie_x64/Dockerfile b/tools/dockerfile/test/node_jessie_x64/Dockerfile
index 31602e594e..103be8412b 100644
--- a/tools/dockerfile/test/node_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/node_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -76,7 +77,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #==================
 # Node dependencies
diff --git a/tools/dockerfile/test/php7_jessie_x64/Dockerfile b/tools/dockerfile/test/php7_jessie_x64/Dockerfile
index e79305bb27..f6d426bcd6 100644
--- a/tools/dockerfile/test/php7_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/php7_jessie_x64/Dockerfile
@@ -77,7 +77,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
diff --git a/tools/dockerfile/test/php_jessie_x64/Dockerfile b/tools/dockerfile/test/php_jessie_x64/Dockerfile
index 245a642367..ae82a8d99f 100644
--- a/tools/dockerfile/test/php_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/php_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #=================
 # PHP dependencies
diff --git a/tools/dockerfile/test/python_jessie_x64/Dockerfile b/tools/dockerfile/test/python_jessie_x64/Dockerfile
index 5093b793b0..d5d781cd1a 100644
--- a/tools/dockerfile/test/python_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/python_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
diff --git a/tools/dockerfile/test/python_pyenv_x64/Dockerfile b/tools/dockerfile/test/python_pyenv_x64/Dockerfile
index ff8f0231cb..3b4ad12b6d 100644
--- a/tools/dockerfile/test/python_pyenv_x64/Dockerfile
+++ b/tools/dockerfile/test/python_pyenv_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 # Install dependencies for pyenv
 RUN apt-get update && apt-get install -y \
diff --git a/tools/dockerfile/test/ruby_jessie_x64/Dockerfile b/tools/dockerfile/test/ruby_jessie_x64/Dockerfile
index d77917c87f..3d879bb0c9 100644
--- a/tools/dockerfile/test/ruby_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/ruby_jessie_x64/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #==================
 # Ruby dependencies
diff --git a/tools/dockerfile/test/sanity/Dockerfile b/tools/dockerfile/test/sanity/Dockerfile
index 0f2f9ede58..dff979dc37 100644
--- a/tools/dockerfile/test/sanity/Dockerfile
+++ b/tools/dockerfile/test/sanity/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:15.10
+FROM debian:jessie
 
 # Install Git and basic packages.
 RUN apt-get update && apt-get install -y \
@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
   bzip2 \
   ccache \
   curl \
+  dnsutils \
   gcc \
   gcc-multilib \
   git \
@@ -65,7 +66,7 @@ RUN apt-get update && apt-get install -y \
 # Install Python packages from PyPI
 RUN pip install pip --upgrade
 RUN pip install virtualenv
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
+RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0 twisted==17.5.0
 
 #========================
 # Sanity test dependencies
@@ -81,19 +82,28 @@ RUN pip install simplejson mako
 
 #======================================
 # More sanity test dependencies (bazel)
-RUN apt-get install -y openjdk-8-jdk
-# Check out Bazel version 0.4.1 since this version allows running
-# ./compile.sh without a local protoc dependency
-# TODO(mattkwong): install dependencies to support latest Bazel version if newer
-# version is needed
-RUN git clone https://github.com/bazelbuild/bazel.git /bazel && \
-  cd /bazel && git checkout tags/0.4.1 && ./compile.sh
-RUN ln -s /bazel/output/bazel /bin/
+RUN echo "deb http://http.debian.net/debian jessie-backports main" >> /etc/apt/sources.list
+RUN apt-get update
+RUN apt-get install -y -t jessie-backports openjdk-8-jdk
+
+#========================
+# Bazel installation
+RUN echo "deb [arch=amd64] http://storage.googleapis.com/bazel-apt stable jdk1.8" > /etc/apt/sources.list.d/bazel.list
+RUN curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
+RUN apt-get -y update
+RUN apt-get -y install bazel
+
+# Pin Bazel to 0.4.4
+# Installing Bazel via apt-get first is required before installing 0.4.4 to
+# allow gRPC to build without errors. See https://github.com/grpc/grpc/issues/10553
+RUN curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/0.4.4/bazel-0.4.4-installer-linux-x86_64.sh
+RUN chmod +x ./bazel-0.4.4-installer-linux-x86_64.sh
+RUN ./bazel-0.4.4-installer-linux-x86_64.sh
 
 RUN apt-get update && apt-get -y install wget
-RUN echo deb http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN echo deb-src http://llvm.org/apt/wily/ llvm-toolchain-wily-3.8 main >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key| apt-key add -
+RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
+RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
 RUN apt-get update && apt-get -y install clang-format-3.8
 
 # Prepare ccache
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index b83e581e06..d81b7b4d11 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -811,6 +811,7 @@ include/grpc++/impl/channel_argument_option.h \
 include/grpc++/impl/client_unary_call.h \
 include/grpc++/impl/codegen/async_stream.h \
 include/grpc++/impl/codegen/async_unary_call.h \
+include/grpc++/impl/codegen/byte_buffer.h \
 include/grpc++/impl/codegen/call.h \
 include/grpc++/impl/codegen/call_hook.h \
 include/grpc++/impl/codegen/channel_interface.h \
@@ -881,6 +882,7 @@ include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
@@ -893,6 +895,7 @@ include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_custom.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
@@ -916,6 +919,7 @@ include/grpc/support/port_platform.h \
 include/grpc/support/string_util.h \
 include/grpc/support/subprocess.h \
 include/grpc/support/sync.h \
+include/grpc/support/sync_custom.h \
 include/grpc/support/sync_generic.h \
 include/grpc/support/sync_posix.h \
 include/grpc/support/sync_windows.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 67dfb067aa..eacb40c212 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -811,6 +811,7 @@ include/grpc++/impl/channel_argument_option.h \
 include/grpc++/impl/client_unary_call.h \
 include/grpc++/impl/codegen/async_stream.h \
 include/grpc++/impl/codegen/async_unary_call.h \
+include/grpc++/impl/codegen/byte_buffer.h \
 include/grpc++/impl/codegen/call.h \
 include/grpc++/impl/codegen/call_hook.h \
 include/grpc++/impl/codegen/channel_interface.h \
@@ -882,6 +883,7 @@ include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
@@ -894,6 +896,7 @@ include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_custom.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
@@ -917,6 +920,7 @@ include/grpc/support/port_platform.h \
 include/grpc/support/string_util.h \
 include/grpc/support/subprocess.h \
 include/grpc/support/sync.h \
+include/grpc/support/sync_custom.h \
 include/grpc/support/sync_generic.h \
 include/grpc/support/sync_posix.h \
 include/grpc/support/sync_windows.h \
@@ -940,10 +944,15 @@ src/core/lib/channel/handshaker_registry.h \
 src/core/lib/compression/algorithm_metadata.h \
 src/core/lib/compression/message_compress.h \
 src/core/lib/compression/stream_compression.h \
+src/core/lib/compression/stream_compression_gzip.h \
+src/core/lib/compression/stream_compression_identity.h \
+src/core/lib/debug/stats.h \
+src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.h \
 src/core/lib/http/format_request.h \
 src/core/lib/http/httpcli.h \
 src/core/lib/http/parser.h \
+src/core/lib/iomgr/call_combiner.h \
 src/core/lib/iomgr/closure.h \
 src/core/lib/iomgr/combiner.h \
 src/core/lib/iomgr/endpoint.h \
@@ -951,8 +960,6 @@ src/core/lib/iomgr/endpoint_pair.h \
 src/core/lib/iomgr/error.h \
 src/core/lib/iomgr/error_internal.h \
 src/core/lib/iomgr/ev_epoll1_linux.h \
-src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h \
-src/core/lib/iomgr/ev_epoll_thread_pool_linux.h \
 src/core/lib/iomgr/ev_epollex_linux.h \
 src/core/lib/iomgr/ev_epollsig_linux.h \
 src/core/lib/iomgr/ev_poll_posix.h \
@@ -1031,7 +1038,6 @@ src/core/lib/support/spinlock.h \
 src/core/lib/support/stack_lockfree.h \
 src/core/lib/support/string.h \
 src/core/lib/support/string_windows.h \
-src/core/lib/support/thd_internal.h \
 src/core/lib/support/time_precise.h \
 src/core/lib/support/tmpfile.h \
 src/core/lib/surface/alarm_internal.h \
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index c5ae421d40..b8514fe311 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.0.0-dev
+PROJECT_NUMBER         = 5.0.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -811,6 +811,7 @@ include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
@@ -827,6 +828,8 @@ include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_custom.h \
+include/grpc/impl/codegen/sync_custom.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
@@ -853,6 +856,7 @@ include/grpc/support/port_platform.h \
 include/grpc/support/string_util.h \
 include/grpc/support/subprocess.h \
 include/grpc/support/sync.h \
+include/grpc/support/sync_custom.h \
 include/grpc/support/sync_generic.h \
 include/grpc/support/sync_posix.h \
 include/grpc/support/sync_windows.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 4901fc9218..33cafacdde 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.0.0-dev
+PROJECT_NUMBER         = 5.0.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -811,6 +811,7 @@ include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
 include/grpc/impl/codegen/atm_windows.h \
 include/grpc/impl/codegen/atm_windows.h \
+include/grpc/impl/codegen/byte_buffer.h \
 include/grpc/impl/codegen/byte_buffer_reader.h \
 include/grpc/impl/codegen/compression_types.h \
 include/grpc/impl/codegen/connectivity_state.h \
@@ -827,6 +828,8 @@ include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync.h \
+include/grpc/impl/codegen/sync_custom.h \
+include/grpc/impl/codegen/sync_custom.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
@@ -853,6 +856,7 @@ include/grpc/support/port_platform.h \
 include/grpc/support/string_util.h \
 include/grpc/support/subprocess.h \
 include/grpc/support/sync.h \
+include/grpc/support/sync_custom.h \
 include/grpc/support/sync_generic.h \
 include/grpc/support/sync_posix.h \
 include/grpc/support/sync_windows.h \
@@ -976,10 +980,10 @@ src/core/ext/filters/http/message_compress/message_compress_filter.c \
 src/core/ext/filters/http/message_compress/message_compress_filter.h \
 src/core/ext/filters/http/server/http_server_filter.c \
 src/core/ext/filters/http/server/http_server_filter.h \
-src/core/ext/filters/load_reporting/load_reporting.c \
-src/core/ext/filters/load_reporting/load_reporting.h \
-src/core/ext/filters/load_reporting/load_reporting_filter.c \
-src/core/ext/filters/load_reporting/load_reporting_filter.h \
+src/core/ext/filters/load_reporting/server_load_reporting_filter.c \
+src/core/ext/filters/load_reporting/server_load_reporting_filter.h \
+src/core/ext/filters/load_reporting/server_load_reporting_plugin.c \
+src/core/ext/filters/load_reporting/server_load_reporting_plugin.h \
 src/core/ext/filters/max_age/max_age_filter.c \
 src/core/ext/filters/max_age/max_age_filter.h \
 src/core/ext/filters/message_size/message_size_filter.c \
@@ -1074,6 +1078,14 @@ src/core/lib/compression/message_compress.c \
 src/core/lib/compression/message_compress.h \
 src/core/lib/compression/stream_compression.c \
 src/core/lib/compression/stream_compression.h \
+src/core/lib/compression/stream_compression_gzip.c \
+src/core/lib/compression/stream_compression_gzip.h \
+src/core/lib/compression/stream_compression_identity.c \
+src/core/lib/compression/stream_compression_identity.h \
+src/core/lib/debug/stats.c \
+src/core/lib/debug/stats.h \
+src/core/lib/debug/stats_data.c \
+src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.c \
 src/core/lib/debug/trace.h \
 src/core/lib/http/format_request.c \
@@ -1084,6 +1096,8 @@ src/core/lib/http/httpcli_security_connector.c \
 src/core/lib/http/parser.c \
 src/core/lib/http/parser.h \
 src/core/lib/iomgr/README.md \
+src/core/lib/iomgr/call_combiner.c \
+src/core/lib/iomgr/call_combiner.h \
 src/core/lib/iomgr/closure.c \
 src/core/lib/iomgr/closure.h \
 src/core/lib/iomgr/combiner.c \
@@ -1099,10 +1113,6 @@ src/core/lib/iomgr/error.h \
 src/core/lib/iomgr/error_internal.h \
 src/core/lib/iomgr/ev_epoll1_linux.c \
 src/core/lib/iomgr/ev_epoll1_linux.h \
-src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c \
-src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h \
-src/core/lib/iomgr/ev_epoll_thread_pool_linux.c \
-src/core/lib/iomgr/ev_epoll_thread_pool_linux.h \
 src/core/lib/iomgr/ev_epollex_linux.c \
 src/core/lib/iomgr/ev_epollex_linux.h \
 src/core/lib/iomgr/ev_epollsig_linux.c \
@@ -1330,7 +1340,6 @@ src/core/lib/support/sync.c \
 src/core/lib/support/sync_posix.c \
 src/core/lib/support/sync_windows.c \
 src/core/lib/support/thd.c \
-src/core/lib/support/thd_internal.h \
 src/core/lib/support/thd_posix.c \
 src/core/lib/support/thd_windows.c \
 src/core/lib/support/time.c \
@@ -1424,9 +1433,13 @@ src/core/tsi/transport_security_adapter.h \
 src/core/tsi/transport_security_grpc.c \
 src/core/tsi/transport_security_grpc.h \
 src/core/tsi/transport_security_interface.h \
+third_party/nanopb/pb.h \
 third_party/nanopb/pb_common.c \
+third_party/nanopb/pb_common.h \
 third_party/nanopb/pb_decode.c \
-third_party/nanopb/pb_encode.c
+third_party/nanopb/pb_decode.h \
+third_party/nanopb/pb_encode.c \
+third_party/nanopb/pb_encode.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/flakes/detect_flakes.py b/tools/flakes/detect_flakes.py
index 2aff4c0872..c5c7f61771 100644
--- a/tools/flakes/detect_flakes.py
+++ b/tools/flakes/detect_flakes.py
@@ -33,14 +33,17 @@ sys.path.append(gcp_utils_dir)
 import big_query_utils
 
 def print_table(table):
-    for i, (k, v) in enumerate(table.items()):
+    kokoro_base_url = 'https://kokoro.corp.google.com/job/'
+    for k, v in table.items():
       job_name = v[0]
       build_id = v[1]
       ts = int(float(v[2]))
       # TODO(dgq): timezone handling is wrong. We need to determine the timezone
       # of the computer running this script.
       human_ts = datetime.datetime.utcfromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S PDT')
-      print("{}. Test: {}, Timestamp: {}, id: {}@{}\n".format(i, k, human_ts, job_name, build_id))
+      job_path = '{}/{}'.format('/job/'.join(job_name.split('/')), build_id)
+      full_kokoro_url = kokoro_base_url + job_path
+      print("Test: {}, Timestamp: {}, url: {}\n".format(k, human_ts, full_kokoro_url))
 
 
 def get_flaky_tests(days_lower_bound, days_upper_bound, limit=None):
diff --git a/tools/gce/create_interop_worker.sh b/tools/gce/create_interop_worker.sh
index 76e4905272..3e59dc501a 100755
--- a/tools/gce/create_interop_worker.sh
+++ b/tools/gce/create_interop_worker.sh
@@ -33,7 +33,8 @@ gcloud compute instances create $INSTANCE_NAME \
     --machine-type n1-standard-16 \
     --image ubuntu-15-10 \
     --boot-disk-size 1000 \
-    --scopes https://www.googleapis.com/auth/xapi.zoo
+    --scopes https://www.googleapis.com/auth/xapi.zoo \
+    --tags=allow-ssh
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
 sleep 60
diff --git a/tools/gce/create_linux_performance_worker.sh b/tools/gce/create_linux_performance_worker.sh
index 9b85f7b437..4270f5cbfb 100755
--- a/tools/gce/create_linux_performance_worker.sh
+++ b/tools/gce/create_linux_performance_worker.sh
@@ -34,9 +34,10 @@ gcloud compute instances create $INSTANCE_NAME \
     --zone "$ZONE" \
     --machine-type $MACHINE_TYPE \
     --image-project ubuntu-os-cloud \
-    --image-family ubuntu-1610 \
+    --image-family ubuntu-1704 \
     --boot-disk-size 300 \
-    --scopes https://www.googleapis.com/auth/bigquery
+    --scopes https://www.googleapis.com/auth/bigquery \
+    --tags=allow-ssh
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
 sleep 60
diff --git a/tools/gce/create_linux_worker.sh b/tools/gce/create_linux_worker.sh
index c96f3281fc..8bf44aa729 100755
--- a/tools/gce/create_linux_worker.sh
+++ b/tools/gce/create_linux_worker.sh
@@ -31,7 +31,8 @@ gcloud compute instances create $INSTANCE_NAME \
     --image=ubuntu-1510 \
     --image-project=grpc-testing \
     --boot-disk-size 1000 \
-    --scopes https://www.googleapis.com/auth/bigquery
+    --scopes https://www.googleapis.com/auth/bigquery \
+    --tags=allow-ssh
 
 echo 'Created GCE instance, waiting 60 seconds for it to come online.'
 sleep 60
diff --git a/tools/gce/linux_performance_worker_init.sh b/tools/gce/linux_performance_worker_init.sh
index 8f0a0f65c3..88d8de7402 100755
--- a/tools/gce/linux_performance_worker_init.sh
+++ b/tools/gce/linux_performance_worker_init.sh
@@ -128,6 +128,11 @@ ruby -v
 # Install bundler (prerequisite for gRPC Ruby)
 gem install bundler
 
+# PHP dependencies
+sudo apt-get install -y php php-dev phpunit php-pear unzip zlib1g-dev
+curl -sS https://getcomposer.org/installer | php
+sudo mv composer.phar /usr/local/bin/composer
+
 # Java dependencies - nothing as we already have Java JDK 8
 
 # Go dependencies
diff --git a/tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc b/tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
new file mode 100644
index 0000000000..dc3c75a6a1
--- /dev/null
+++ b/tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
@@ -0,0 +1,37 @@
+#!/bin/bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Source this rc script to prepare the environment for linux perf builds
+
+# Need to increase open files limit and size for perf test
+ulimit -n 32768
+ulimit -c unlimited
+
+# Performance PR testing needs GH API key and PR metadata to comment results
+if [ -n "$KOKORO_GITHUB_PULL_REQUEST_NUMBER" ]; then
+  set +x
+  sudo apt-get install -y jq
+  export ghprbTargetBranch=$(curl -s https://api.github.com/repos/grpc/grpc/pulls/$KOKORO_GITHUB_PULL_REQUEST_NUMBER | jq -r .base.ref)
+
+  gsutil cp gs://grpc-testing-secrets/github_credentials/oauth_token.txt ~/
+  # TODO(matt-kwong): rename this to GITHUB_OAUTH_TOKEN after Jenkins deprecation
+  export JENKINS_OAUTH_TOKEN=$(cat ~/oauth_token.txt)
+  export ghprbPullId=$KOKORO_GITHUB_PULL_REQUEST_NUMBER
+  set -x
+fi
+
+sudo pip install tabulate
+
+git submodule update --init
diff --git a/tools/internal_ci/helper_scripts/prepare_build_linux_rc b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
index e6f195c87d..2ade8dac51 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_linux_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
@@ -26,9 +26,17 @@ sudo service docker restart
 
 # Populate xdg-cache-home to workaround https://github.com/grpc/grpc/issues/11968
 sudo mkdir -p /tmp/xdg-cache-home
+PYTHONWARNINGS=ignore XDG_CACHE_HOME=/tmp/xdg-cache-home sudo -E pip install setuptools wheel
 PYTHONWARNINGS=ignore XDG_CACHE_HOME=/tmp/xdg-cache-home sudo -E pip install coverage==4.4 pylint==1.6.5
 
 # Download Docker images from DockerHub
 export DOCKERHUB_ORGANIZATION=grpctesting
 
+# If this is a PR using RUN_TESTS_FLAGS var, then add flags to filter tests
+if [ -n "$KOKORO_GITHUB_PULL_REQUEST_NUMBER" ] && [ -n "$RUN_TESTS_FLAGS" ]; then
+  sudo apt-get install -y jq
+  ghprbTargetBranch=$(curl -s https://api.github.com/repos/grpc/grpc/pulls/$KOKORO_GITHUB_PULL_REQUEST_NUMBER | jq -r .base.ref)
+  export RUN_TESTS_FLAGS="$RUN_TESTS_FLAGS --filter_pr_tests --base_branch origin/$ghprbTargetBranch"	
+fi
+
 git submodule update --init
diff --git a/tools/internal_ci/helper_scripts/prepare_build_macos_rc b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
index bd250957f4..bec529f85e 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_macos_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
@@ -28,39 +28,34 @@ ulimit -n 10000
 ulimit -a
 
 # Add GCP credentials for BQ access
-# pip does not install google-api-python-client properly, so use easy_install
-sudo easy_install --upgrade google-api-python-client
+pip install google-api-python-client --user python
 export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/GrpcTesting-d0eeee2db331.json
 
-# required to build protobuf
-brew install gflags
+# If this is a PR using RUN_TESTS_FLAGS var, then add flags to filter tests
+if [ -n "$KOKORO_GITHUB_PULL_REQUEST_NUMBER" ] && [ -n "$RUN_TESTS_FLAGS" ]; then
+  brew install jq
+  ghprbTargetBranch=$(curl -s https://api.github.com/repos/grpc/grpc/pulls/$KOKORO_GITHUB_PULL_REQUEST_NUMBER | jq -r .base.ref)
+  export RUN_TESTS_FLAGS="$RUN_TESTS_FLAGS --filter_pr_tests --base_branch origin/$ghprbTargetBranch"
+fi
 
 set +ex  # rvm script is very verbose and exits with errorcode
 source $HOME/.rvm/scripts/rvm
 set -e  # rvm commands are very verbose
-rvm install ruby-2.4
+rvm use ruby-2.4
 rvm osx-ssl-certs status all
 rvm osx-ssl-certs update all
 set -ex
 
-gem install bundler
-
 # cocoapods
 export LANG=en_US.UTF-8
-gem install cocoapods
-gem install xcpretty
 pod repo update  # needed by python
 
 # python
 brew install coreutils  # we need grealpath
-sudo pip install virtualenv
-sudo pip install -U six tox setuptools
+pip install virtualenv --user python
+pip install -U six tox setuptools twisted pyyaml --user python
 export PYTHONPATH=/Library/Python/3.4/site-packages
 
-# python 3.4
-wget -q https://www.python.org/ftp/python/3.4.4/python-3.4.4-macosx10.6.pkg
-sudo installer -pkg python-3.4.4-macosx10.6.pkg -target /
-
 # set xcode version for Obj-C tests
 sudo xcode-select -switch /Applications/Xcode_8.2.1.app/Contents/Developer
 
diff --git a/tools/internal_ci/helper_scripts/prepare_build_windows.bat b/tools/internal_ci/helper_scripts/prepare_build_windows.bat
index 69e087e1db..f625755db9 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_windows.bat
+++ b/tools/internal_ci/helper_scripts/prepare_build_windows.bat
@@ -18,6 +18,14 @@ set PATH=C:\tools\msys64\usr\bin;C:\Python27;%PATH%
 
 bash tools/internal_ci/helper_scripts/gen_report_index.sh
 
+@rem If this is a PR using RUN_TESTS_FLAGS var, then add flags to filter tests
+if defined KOKORO_GITHUB_PULL_REQUEST_NUMBER if defined RUN_TESTS_FLAGS (
+  chocolatey install -y jq
+  for /f "usebackq delims=" %%x in (`curl -s https://api.github.com/repos/grpc/grpc/pulls/%KOKORO_GITHUB_PULL_REQUEST_NUMBER% ^| jq -r .base.ref`) do ( 
+    set RUN_TESTS_FLAGS=%RUN_TESTS_FLAGS% --filter_pr_tests --base_branch origin/%%x
+  )
+)
+
 @rem Update DNS settings to:
 @rem 1. allow resolving metadata.google.internal hostname
 @rem 2. make fetching default GCE credential by oauth2client work
diff --git a/tools/internal_ci/linux/grpc_interop_tocloud.cfg b/tools/internal_ci/linux/grpc_interop_tocloud.cfg
index c613f668d9..2803616007 100644
--- a/tools/internal_ci/linux/grpc_interop_tocloud.cfg
+++ b/tools/internal_ci/linux/grpc_interop_tocloud.cfg
@@ -17,7 +17,7 @@
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_interop_tocloud.sh"
 # grpc_interop tests can take 6+ hours to complete.
-timeout_mins: 480
+timeout_mins: 60
 action {
   define_artifacts {
     regex: "**/sponge_log.xml"
diff --git a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py b/tools/internal_ci/linux/grpc_line_count.cfg
index 5772620b60..5854d9c9c2 100644
--- a/src/python/grpcio_tests/tests/protoc_plugin/protos/invocation_testing/split_services/__init__.py
+++ b/tools/internal_ci/linux/grpc_line_count.cfg
@@ -1,4 +1,4 @@
-# Copyright 2016 gRPC authors.
+# Copyright 2017 gRPC authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -11,3 +11,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_line_count.sh"
+timeout_mins: 30
diff --git a/tools/internal_ci/linux/grpc_line_count.sh b/tools/internal_ci/linux/grpc_line_count.sh
new file mode 100755
index 0000000000..22e484ba2f
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_line_count.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This script counts the numbers of line in gRPC's repo and uploads to BQ
+set -ex
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../../..
+
+git submodule update --init
+
+# Install cloc
+git clone -b v1.72 https://github.com/AlDanial/cloc/ ~/cloc
+PERL_MM_USE_DEFAULT=1 sudo perl -MCPAN -e 'install Regexp::Common; install Algorithm::Diff'
+sudo make install -C ~/cloc/Unix
+
+./tools/line_count/collect-now.sh
diff --git a/tools/internal_ci/linux/grpc_microbenchmark_diff.sh b/tools/internal_ci/linux/grpc_microbenchmark_diff.sh
new file mode 100755
index 0000000000..58ffcf336b
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_microbenchmark_diff.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This script is invoked by Jenkins and runs a diff on the microbenchmarks
+set -ex
+
+# List of benchmarks that provide good signal for analyzing performance changes in pull requests
+BENCHMARKS_TO_RUN="bm_fullstack_unary_ping_pong bm_fullstack_streaming_ping_pong bm_fullstack_streaming_pump bm_closure bm_cq bm_call_create bm_error bm_chttp2_hpack bm_chttp2_transport bm_pollset bm_metadata"
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
+
+tools/run_tests/start_port_server.py
+tools/jenkins/run_c_cpp_test.sh tools/profiling/microbenchmarks/bm_diff/bm_main.py \
+  -d origin/$ghprbTargetBranch \
+  -b $BENCHMARKS_TO_RUN || FAILED="true"
+
+# kill port_server.py to prevent the build from hanging
+ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
+
+if [ "$FAILED" != "" ]
+then
+  exit 1
+fi
diff --git a/tools/internal_ci/linux/grpc_performance_profile_daily.cfg b/tools/internal_ci/linux/grpc_performance_profile_daily.cfg
new file mode 100644
index 0000000000..7320a19a76
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_performance_profile_daily.cfg
@@ -0,0 +1,25 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_performance_profile_daily.sh"
+timeout_mins: 1440
+action {
+  define_artifacts {
+    regex: "github/grpc/reports/**"
+  }
+}
+
diff --git a/tools/internal_ci/linux/grpc_performance_profile_daily.sh b/tools/internal_ci/linux/grpc_performance_profile_daily.sh
new file mode 100755
index 0000000000..25523e21b8
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_performance_profile_daily.sh
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
+
+CPUS=`python -c 'import multiprocessing; print multiprocessing.cpu_count()'`
+
+make CONFIG=opt memory_profile_test memory_profile_client memory_profile_server -j $CPUS
+bins/opt/memory_profile_test
+bq load microbenchmarks.memory memory_usage.csv
+
+tools/run_tests/run_microbenchmark.py --collect summary --bigquery_upload || FAILED="true"
+
+# kill port_server.py to prevent the build from hanging
+ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
+
+if [ "$FAILED" != "" ]
+then
+  exit 1
+fi
diff --git a/tools/internal_ci/linux/grpc_performance_profile_master.cfg b/tools/internal_ci/linux/grpc_performance_profile_master.cfg
new file mode 100644
index 0000000000..ccb8aabb38
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_performance_profile_master.cfg
@@ -0,0 +1,25 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_performance_profile_master.sh"
+timeout_mins: 600
+action {
+  define_artifacts {
+    regex: "github/grpc/reports/**"
+  }
+}
+
diff --git a/tools/internal_ci/linux/grpc_performance_profile_master.sh b/tools/internal_ci/linux/grpc_performance_profile_master.sh
new file mode 100755
index 0000000000..40bbfe89dc
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_performance_profile_master.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
+
+tools/jenkins/run_performance_profile_hourly.sh || FAILED="true"
+
+# kill port_server.py to prevent the build from hanging
+ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
+
+if [ "$FAILED" != "" ]
+then
+  exit 1
+fi
+
diff --git a/tools/internal_ci/linux/grpc_run_tests_matrix.sh b/tools/internal_ci/linux/grpc_run_tests_matrix.sh
index 028704b3ff..bd1430b741 100755
--- a/tools/internal_ci/linux/grpc_run_tests_matrix.sh
+++ b/tools/internal_ci/linux/grpc_run_tests_matrix.sh
@@ -20,4 +20,14 @@ cd $(dirname $0)/../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
-tools/run_tests/run_tests_matrix.py $RUN_TESTS_FLAGS
+tools/run_tests/run_tests_matrix.py $RUN_TESTS_FLAGS || FAILED="true"
+
+# Reveal leftover processes that might be left behind by the build
+ps aux | grep -i kbuilder
+
+echo 'Exiting gRPC main test script.'
+
+if [ "$FAILED" != "" ]
+then
+  exit 1
+fi
diff --git a/tools/internal_ci/linux/grpc_sanity_webhook_test.cfg b/tools/internal_ci/linux/grpc_sanity_webhook_test.cfg
new file mode 100644
index 0000000000..24e7984f3a
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_sanity_webhook_test.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
+timeout_mins: 20
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests linux sanity opt --inner_jobs 16 -j 1 --internal_ci"
+}
diff --git a/tools/internal_ci/linux/grpc_trickle_diff.sh b/tools/internal_ci/linux/grpc_trickle_diff.sh
new file mode 100755
index 0000000000..624031afa7
--- /dev/null
+++ b/tools/internal_ci/linux/grpc_trickle_diff.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This script is invoked by Jenkins and runs a diff on the microbenchmarks
+set -ex
+
+# List of benchmarks that provide good signal for analyzing performance changes in pull requests
+BENCHMARKS_TO_RUN="cli_transport_stalls_per_iteration cli_stream_stalls_per_iteration svr_transport_stalls_per_iteration svr_stream_stalls_per_iteration"
+
+# Enter the gRPC repo root
+cd $(dirname $0)/../../..
+
+source tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
+
+tools/run_tests/start_port_server.py
+tools/jenkins/run_c_cpp_test.sh tools/profiling/microbenchmarks/bm_diff/bm_main.py \
+  -d origin/$ghprbTargetBranch \
+  -b bm_fullstack_trickle \
+  -l 4 \
+  -t $BENCHMARKS_TO_RUN \
+  --no-counters \
+  --pr_comment_name trickle || FAILED="true"
+
+# kill port_server.py to prevent the build from hanging
+ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
+
+if [ "$FAILED" != "" ]
+then
+  exit 1
+fi
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_dbg.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_dbg.cfg
index dcc6265b34..8124f5c1b3 100644
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_dbg.cfg
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_dbg.cfg
@@ -26,5 +26,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux corelang dbg --inner_jobs 16 -j 1 --internal_ci"
+  value: "-f basictests linux corelang dbg --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_opt.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_opt.cfg
index f60beaf15c..ecedc73e44 100644
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_opt.cfg
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_c_cpp_opt.cfg
@@ -26,5 +26,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux corelang opt --inner_jobs 16 -j 1 --internal_ci"
+  value: "-f basictests linux corelang opt --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg
new file mode 100644
index 0000000000..577cb28ae5
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests linux c dbg --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg
new file mode 100644
index 0000000000..9e0b724b2e
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests linux c opt --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg
new file mode 100644
index 0000000000..0fda74cf44
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests linux c++ dbg --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg
new file mode 100644
index 0000000000..199a8905d9
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests linux c++ opt --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg
index 7c16cf6a10..f7e8d8ad33 100644
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg
+++ b/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg
@@ -26,5 +26,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux multilang --inner_jobs 16 -j 2 --internal_ci"
+  value: "-f basictests linux multilang --inner_jobs 16 -j 2 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/pull_request/grpc_microbenchmark_diff.cfg b/tools/internal_ci/linux/pull_request/grpc_microbenchmark_diff.cfg
new file mode 100644
index 0000000000..9269c345f0
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_microbenchmark_diff.cfg
@@ -0,0 +1,25 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_microbenchmark_diff.sh"
+timeout_mins: 120
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
diff --git a/tools/internal_ci/linux/pull_request/grpc_trickle_diff.cfg b/tools/internal_ci/linux/pull_request/grpc_trickle_diff.cfg
new file mode 100644
index 0000000000..e86b3ab475
--- /dev/null
+++ b/tools/internal_ci/linux/pull_request/grpc_trickle_diff.cfg
@@ -0,0 +1,25 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/linux/grpc_trickle_diff.sh"
+timeout_mins: 120
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
index 649d93d0a1..1daf7a514e 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
@@ -17,7 +17,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 1440
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c asan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c asan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
index d5ba2031fc..a8503b7bcb 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
@@ -17,7 +17,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 1440
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c msan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c msan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
index 67d4356821..12af4581eb 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
@@ -17,7 +17,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 1440
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c tsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c tsan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
index c162d1d1d0..0d3803bf23 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
@@ -17,7 +17,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 1440
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c ubsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c ubsan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
index 29f1fce568..557561810b 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
@@ -17,7 +17,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 1440
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c++ asan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c++ asan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
index 331f73b3c7..cb15ca34fd 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f c++ tsan --inner_jobs 16 -j 1 --internal_ci --filter_pr_tests --base_branch origin/master --max_time=3600"
+  value: "-f c++ tsan --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/macos/grpc_build_artifacts.sh b/tools/internal_ci/macos/grpc_build_artifacts.sh
index 603c15f210..09784e3bb4 100755
--- a/tools/internal_ci/macos/grpc_build_artifacts.sh
+++ b/tools/internal_ci/macos/grpc_build_artifacts.sh
@@ -20,25 +20,13 @@ cd $(dirname $0)/../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_macos_rc
 
-# python 3.5
-wget -q https://www.python.org/ftp/python/3.5.2/python-3.5.2-macosx10.6.pkg
-sudo installer -pkg python-3.5.2-macosx10.6.pkg -target /
-
 # install cython for all python versions
 python2.7 -m pip install cython setuptools wheel
 python3.4 -m pip install cython setuptools wheel
 python3.5 -m pip install cython setuptools wheel
 python3.6 -m pip install cython setuptools wheel
 
-# node-gyp (needed for node artifacts)
-npm install -g node-gyp
-
-# php dependencies: pecl
-curl -O http://pear.php.net/go-pear.phar
-sudo php -d detect_unicode=0 go-pear.phar
-
 # needed to build ruby artifacts
-gem install rake-compiler
 wget https://raw.githubusercontent.com/grpc/grpc/master/tools/distrib/build_ruby_environment_macos.sh
 bash build_ruby_environment_macos.sh
 
diff --git a/tools/internal_ci/macos/grpc_run_tests_matrix.sh b/tools/internal_ci/macos/grpc_run_tests_matrix.sh
index 9a43e4869b..8e7fd54a62 100755
--- a/tools/internal_ci/macos/grpc_run_tests_matrix.sh
+++ b/tools/internal_ci/macos/grpc_run_tests_matrix.sh
@@ -25,6 +25,11 @@ tools/run_tests/run_tests_matrix.py $RUN_TESTS_FLAGS || FAILED="true"
 # kill port_server.py to prevent the build from hanging
 ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
 
+# Reveal leftover processes that might be left behind by the build
+ps aux | grep -i kbuilder
+
+echo 'Exiting gRPC main test script.'
+
 if [ "$FAILED" != "" ]
 then
   exit 1
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg
index f058f0c7e4..30c01d3e2f 100644
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg
+++ b/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos dbg --internal_ci -j 1 --inner_jobs 4"
+  value: "-f basictests macos dbg --internal_ci -j 1 --inner_jobs 4 --max_time=3600"
 }
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg
index 5048baaf48..b63ee713bc 100644
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg
+++ b/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg
@@ -27,5 +27,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos opt --internal_ci -j 1 --inner_jobs 4"
+  value: "-f basictests macos opt --internal_ci -j 1 --inner_jobs 4 --max_time=3600"
 }
diff --git a/tools/internal_ci/windows/grpc_basictests.cfg b/tools/internal_ci/windows/grpc_basictests.cfg
index 396d29ef09..8e644e4c5e 100644
--- a/tools/internal_ci/windows/grpc_basictests.cfg
+++ b/tools/internal_ci/windows/grpc_basictests.cfg
@@ -16,7 +16,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 360
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
diff --git a/tools/internal_ci/windows/grpc_build_artifacts.bat b/tools/internal_ci/windows/grpc_build_artifacts.bat
index 29c876dd35..c6e523697c 100644
--- a/tools/internal_ci/windows/grpc_build_artifacts.bat
+++ b/tools/internal_ci/windows/grpc_build_artifacts.bat
@@ -19,14 +19,12 @@ rename C:\Python34_32bit Python34_32bits
 rename C:\Python35_32bit Python35_32bits
 rename C:\Python36_32bit Python36_32bits
 
-pacman -S --noconfirm mingw64/mingw-w64-x86_64-gcc mingw32/mingw-w64-i686-gcc
-
 @rem enter repo root
 cd /d %~dp0\..\..\..
 
 call tools/internal_ci/helper_scripts/prepare_build_windows.bat
 
-python tools/run_tests/task_runner.py -f artifact windows || goto :error
+python tools/run_tests/task_runner.py -f artifact windows -j 4 || goto :error
 goto :EOF
 
 :error
diff --git a/tools/internal_ci/windows/grpc_portability.cfg b/tools/internal_ci/windows/grpc_portability.cfg
index cd04d77f5d..94e71753ef 100644
--- a/tools/internal_ci/windows/grpc_portability.cfg
+++ b/tools/internal_ci/windows/grpc_portability.cfg
@@ -16,7 +16,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 360
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
diff --git a/tools/internal_ci/windows/grpc_portability_build_only.cfg b/tools/internal_ci/windows/grpc_portability_build_only.cfg
index b2b58ece2d..3bc27f1f24 100644
--- a/tools/internal_ci/windows/grpc_portability_build_only.cfg
+++ b/tools/internal_ci/windows/grpc_portability_build_only.cfg
@@ -16,7 +16,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 360
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
diff --git a/tools/internal_ci/windows/grpc_run_tests_matrix.bat b/tools/internal_ci/windows/grpc_run_tests_matrix.bat
index 08d834f8b0..10627add25 100644
--- a/tools/internal_ci/windows/grpc_run_tests_matrix.bat
+++ b/tools/internal_ci/windows/grpc_run_tests_matrix.bat
@@ -17,8 +17,10 @@ cd /d %~dp0\..\..\..
 
 call tools/internal_ci/helper_scripts/prepare_build_windows.bat
 
-python tools/run_tests/run_tests_matrix.py %RUN_TESTS_FLAGS% || goto :error
-goto :EOF
+python tools/run_tests/run_tests_matrix.py %RUN_TESTS_FLAGS%
+set RUNTESTS_EXITCODE=%errorlevel%
 
-:error
-exit /b %errorlevel%
+@rem Reveal leftover processes that might be left behind by the build
+tasklist /V
+
+exit /b %RUNTESTS_EXITCODE%
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests.cfg
index a116738651..91777cd7cb 100644
--- a/tools/internal_ci/windows/pull_request/grpc_basictests.cfg
+++ b/tools/internal_ci/windows/pull_request/grpc_basictests.cfg
@@ -16,7 +16,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 360
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
@@ -26,5 +26,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows -j 1 --inner_jobs 8 --internal_ci"
+  value: "-f basictests windows -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
 }
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg
new file mode 100644
index 0000000000..81a1e9d3c8
--- /dev/null
+++ b/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests windows dbg -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg
new file mode 100644
index 0000000000..3bb6510ca7
--- /dev/null
+++ b/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg
@@ -0,0 +1,30 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Config file for the internal CI (in protobuf text format)
+
+# Location of the continuous shell script in repository.
+build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
+timeout_mins: 240
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
+  }
+}
+
+env_vars {
+  key: "RUN_TESTS_FLAGS"
+  value: "-f basictests windows opt -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
+}
diff --git a/tools/internal_ci/windows/pull_request/grpc_portability.cfg b/tools/internal_ci/windows/pull_request/grpc_portability.cfg
index c395cb4a94..2bda487629 100644
--- a/tools/internal_ci/windows/pull_request/grpc_portability.cfg
+++ b/tools/internal_ci/windows/pull_request/grpc_portability.cfg
@@ -16,7 +16,7 @@
 
 # Location of the continuous shell script in repository.
 build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 360
+timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
diff --git a/tools/jenkins/build_artifacts.sh b/tools/jenkins/build_artifacts.sh
index 166c5104cc..ed2c86adbd 100755
--- a/tools/jenkins/build_artifacts.sh
+++ b/tools/jenkins/build_artifacts.sh
@@ -24,8 +24,4 @@ set -ex -o igncr || set -ex
 curr_platform="$platform"
 unset platform  # variable named 'platform' breaks the windows build
 
-if [ "$curr_platform" == "linux" ] && [ "$language" == "ruby" ] ; then
-  ./tools/run_tests/artifacts/build_artifact_ruby.sh
-else
-  python tools/run_tests/task_runner.py -f artifact $language $curr_platform $architecture
-fi
+python tools/run_tests/task_runner.py -f artifact $language $curr_platform $architecture
diff --git a/tools/jenkins/run_full_performance.sh b/tools/jenkins/run_full_performance.sh
index 0f101f6da9..a9661c7e26 100755
--- a/tools/jenkins/run_full_performance.sh
+++ b/tools/jenkins/run_full_performance.sh
@@ -21,7 +21,7 @@ cd $(dirname $0)/../..
 
 # run 8core client vs 8core server
 tools/run_tests/run_performance_tests.py \
-    -l c++ csharp node ruby java python go node_express \
+    -l c++ csharp node ruby java python go node_express php \
     --netperf \
     --category scalable \
     --bq_result_table performance_test.performance_experiment \
diff --git a/tools/jenkins/run_performance_profile_daily.sh b/tools/jenkins/run_performance_profile_daily.sh
index 26ee87d240..04a2464aee 100755
--- a/tools/jenkins/run_performance_profile_daily.sh
+++ b/tools/jenkins/run_performance_profile_daily.sh
@@ -27,4 +27,6 @@ else
   PYTHON=python2.7
 fi
 
-$PYTHON tools/run_tests/run_microbenchmark.py --collect summary perf latency
+BENCHMARKS_TO_RUN="bm_fullstack_unary_ping_pong bm_fullstack_streaming_ping_pong bm_fullstack_streaming_pump bm_closure bm_cq bm_call_create bm_error bm_chttp2_hpack bm_chttp2_transport bm_pollset bm_metadata"
+
+$PYTHON tools/run_tests/run_microbenchmark.py --collect summary perf latency -b $BENCHMARKS_TO_RUN
diff --git a/tools/profiling/microbenchmarks/bm2bq.py b/tools/profiling/microbenchmarks/bm2bq.py
index 0797f3e21d..9f9b672f75 100755
--- a/tools/profiling/microbenchmarks/bm2bq.py
+++ b/tools/profiling/microbenchmarks/bm2bq.py
@@ -22,42 +22,15 @@ import sys
 import json
 import csv
 import bm_json
+import json
+import subprocess
+
+columns = []
 
-columns = [
-  ('jenkins_build', 'integer'),
-  ('jenkins_job', 'string'),
-  ('date', 'timestamp'),
-  ('cpu_scaling_enabled', 'boolean'),
-  ('num_cpus', 'integer'),
-  ('mhz_per_cpu', 'integer'),
-  ('library_build_type', 'string'),
-  ('name', 'string'),
-  ('fixture', 'string'),
-  ('client_mutator', 'string'),
-  ('server_mutator', 'string'),
-  ('request_size', 'integer'),
-  ('response_size', 'integer'),
-  ('request_count', 'integer'),
-  ('iterations', 'integer'),
-  ('time_unit', 'string'),
-  ('real_time', 'integer'),
-  ('cpu_time', 'integer'),
-  ('bytes_per_second', 'float'),
-  ('allocs_per_iteration', 'float'),
-  ('locks_per_iteration', 'float'),
-  ('writes_per_iteration', 'float'),
-  ('bandwidth_kilobits', 'integer'),
-  ('cli_transport_stalls_per_iteration', 'float'),
-  ('cli_stream_stalls_per_iteration', 'float'),
-  ('svr_transport_stalls_per_iteration', 'float'),
-  ('svr_stream_stalls_per_iteration', 'float'),
-  ('atm_cas_per_iteration', 'float'),
-  ('atm_add_per_iteration', 'float'),
-  ('end_of_stream', 'boolean'),
-  ('header_bytes_per_iteration', 'float'),
-  ('framing_bytes_per_iteration', 'float'),
-  ('nows_per_iteration', 'float'),
-]
+for row in json.loads(
+    subprocess.check_output([
+      'bq','--format=json','show','microbenchmarks.microbenchmarks']))['schema']['fields']:
+  columns.append((row['name'], row['type'].lower()))
 
 SANITIZE = {
   'integer': int,
diff --git a/tools/profiling/microbenchmarks/bm_diff/bm_constants.py b/tools/profiling/microbenchmarks/bm_diff/bm_constants.py
index ad79a0a197..f8989b17fc 100644
--- a/tools/profiling/microbenchmarks/bm_diff/bm_constants.py
+++ b/tools/profiling/microbenchmarks/bm_diff/bm_constants.py
@@ -28,4 +28,4 @@ _INTERESTING = ('cpu_time', 'real_time', 'locks_per_iteration',
         'atm_cas_per_iteration', 'atm_add_per_iteration',
         'nows_per_iteration', 'cli_transport_stalls_per_iteration', 
         'cli_stream_stalls_per_iteration', 'svr_transport_stalls_per_iteration',
-        'svr_stream_stalls_per_iteration',)
+        'svr_stream_stalls_per_iteration', 'http2_pings_sent_per_iteration')
diff --git a/tools/run_tests/artifacts/artifact_targets.py b/tools/run_tests/artifacts/artifact_targets.py
index 841bbdf912..2cc0dfceab 100644
--- a/tools/run_tests/artifacts/artifact_targets.py
+++ b/tools/run_tests/artifacts/artifact_targets.py
@@ -150,6 +150,7 @@ class PythonArtifact:
                              self.py_version,
                              '32' if self.arch == 'x86' else '64'],
                             environ=environ,
+                            timeout_seconds=45*60,
                             use_workspace=True)
     else:
       environ['PYTHON'] = self.py_version
@@ -157,6 +158,7 @@ class PythonArtifact:
       return create_jobspec(self.name,
                             ['tools/run_tests/artifacts/build_artifact_python.sh'],
                             environ=environ,
+                            timeout_seconds=60*60,
                             use_workspace=True)
 
   def __str__(self):
@@ -257,6 +259,7 @@ class NodeExtArtifact:
                             ['tools\\run_tests\\artifacts\\build_artifact_node.bat',
                              self.gyp_arch],
                             use_workspace=True,
+                            timeout_seconds=45*60,
                             cpu_cost=cpu_cost)
     else:
       if self.platform == 'linux':
@@ -328,12 +331,10 @@ class ProtocArtifact:
             environ=environ,
             use_workspace=True)
     else:
-      generator = 'Visual Studio 12 Win64' if self.arch == 'x64' else 'Visual Studio 12'
-      vcplatform = 'x64' if self.arch == 'x64' else 'Win32'
+      generator = 'Visual Studio 14 2015 Win64' if self.arch == 'x64' else 'Visual Studio 14 2015'
       return create_jobspec(self.name,
                             ['tools\\run_tests\\artifacts\\build_artifact_protoc.bat'],
-                            environ={'generator': generator,
-                                     'Platform': vcplatform},
+                            environ={'generator': generator},
                             use_workspace=True)
 
   def __str__(self):
diff --git a/tools/run_tests/artifacts/build_artifact_protoc.bat b/tools/run_tests/artifacts/build_artifact_protoc.bat
index f3598fb8c9..2e9aae8148 100644
--- a/tools/run_tests/artifacts/build_artifact_protoc.bat
+++ b/tools/run_tests/artifacts/build_artifact_protoc.bat
@@ -14,18 +14,25 @@
 
 mkdir -p %ARTIFACTS_OUT%
 
-setlocal
-cd third_party/protobuf/cmake
+@rem enter repo root
+cd /d %~dp0\..\..\..
 
-mkdir build & cd build
-mkdir solution & cd solution
-cmake -G "%generator%" -Dprotobuf_BUILD_TESTS=OFF ../.. || goto :error
-endlocal
+mkdir cmake
+cd cmake
+mkdir build
+cd build
 
-call vsprojects/build_plugins.bat || goto :error
+@rem TODO(jtattermusch): Stop hardcoding path to yasm once Jenkins workers can locate yasm correctly
+@rem If yasm is not on the path, use hardcoded path instead.
+yasm --version || set USE_HARDCODED_YASM_PATH_MAYBE=-DCMAKE_ASM_NASM_COMPILER="C:/Program Files (x86)/yasm/yasm.exe"
 
-xcopy /Y third_party\protobuf\cmake\build\solution\Release\protoc.exe %ARTIFACTS_OUT%\ || goto :error
-xcopy /Y vsprojects\Release\*_plugin.exe %ARTIFACTS_OUT%\ || xcopy /Y vsprojects\x64\Release\*_plugin.exe %ARTIFACTS_OUT%\ || goto :error
+cmake -G "%generator%" -DgRPC_BUILD_TESTS=OFF -DgRPC_MSVC_STATIC_RUNTIME=ON %USE_HARDCODED_YASM_PATH_MAYBE% ../.. || goto :error
+cmake --build . --target protoc --config Release || goto :error
+cmake --build . --target plugins --config Release || goto :error
+cd ..\..
+
+xcopy /Y cmake\build\third_party\protobuf\Release\protoc.exe %ARTIFACTS_OUT%\ || goto :error
+xcopy /Y cmake\build\Release\*_plugin.exe %ARTIFACTS_OUT%\ || goto :error
 
 goto :EOF
 
diff --git a/tools/run_tests/artifacts/distribtest_targets.py b/tools/run_tests/artifacts/distribtest_targets.py
index fa461efa85..797ed51c7f 100644
--- a/tools/run_tests/artifacts/distribtest_targets.py
+++ b/tools/run_tests/artifacts/distribtest_targets.py
@@ -105,7 +105,9 @@ class CSharpDistribTest(object):
           use_workspace=True)
     elif self.platform == 'windows':
       if self.arch == 'x64':
-        environ={'MSBUILD_EXTRA_ARGS': '/p:Platform=x64',
+        # Use double leading / as the first occurence gets removed by msys bash
+        # when invoking the .bat file (side-effect of posix path conversion)
+        environ={'MSBUILD_EXTRA_ARGS': '//p:Platform=x64',
                  'DISTRIBTEST_OUTPATH': 'DistribTest\\bin\\x64\\Debug'}
       else:
         environ={'DISTRIBTEST_OUTPATH': 'DistribTest\\bin\\Debug'}
@@ -255,12 +257,13 @@ class PHPDistribTest(object):
 class CppDistribTest(object):
   """Tests Cpp make intall by building examples."""
 
-  def __init__(self, platform, arch, docker_suffix=None):
-    self.name = 'cpp_%s_%s_%s' % (platform, arch, docker_suffix)
+  def __init__(self, platform, arch, docker_suffix=None, testcase=None):
+    self.name = 'cpp_%s_%s_%s_%s' % (platform, arch, docker_suffix, testcase)
     self.platform = platform
     self.arch = arch
     self.docker_suffix = docker_suffix
-    self.labels = ['distribtest', 'cpp', platform, arch, docker_suffix]
+    self.testcase = testcase
+    self.labels = ['distribtest', 'cpp', platform, arch, docker_suffix, testcase]
 
   def pre_build_jobspecs(self):
     return []
@@ -271,7 +274,7 @@ class CppDistribTest(object):
                                    'tools/dockerfile/distribtest/cpp_%s_%s' % (
                                        self.docker_suffix,
                                        self.arch),
-                                   'test/distrib/cpp/run_distrib_test.sh')
+                                   'test/distrib/cpp/run_distrib_test_%s.sh' % self.testcase)
     else:
       raise Exception("Not supported yet.")
 
@@ -281,7 +284,8 @@ class CppDistribTest(object):
 
 def targets():
   """Gets list of supported targets"""
-  return [CppDistribTest('linux', 'x64', 'jessie'),
+  return [CppDistribTest('linux', 'x64', 'jessie', 'routeguide'),
+          CppDistribTest('linux', 'x64', 'jessie', 'cmake'),
           CSharpDistribTest('linux', 'x64', 'wheezy'),
           CSharpDistribTest('linux', 'x64', 'jessie'),
           CSharpDistribTest('linux', 'x86', 'jessie'),
diff --git a/tools/run_tests/artifacts/package_targets.py b/tools/run_tests/artifacts/package_targets.py
index 0da13864f0..671d0f7b45 100644
--- a/tools/run_tests/artifacts/package_targets.py
+++ b/tools/run_tests/artifacts/package_targets.py
@@ -78,7 +78,7 @@ class CSharpPackage:
     if self.linux:
       return create_docker_jobspec(
           self.name,
-          'tools/dockerfile/test/csharp_coreclr_x64',
+          'tools/dockerfile/test/csharp_jessie_x64',
           'src/csharp/build_packages_dotnetcli.sh')
     else:
       return create_jobspec(self.name,
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index 30fef6fc0a..c46eb726c8 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -541,6 +541,23 @@
       "gpr", 
       "gpr_test_util", 
       "grpc", 
+      "transport_security_test_lib"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "fake_transport_security_test", 
+    "src": [
+      "test/core/tsi/fake_transport_security_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
       "grpc_test_util"
     ], 
     "headers": [], 
@@ -1027,6 +1044,23 @@
     "headers": [], 
     "is_filegroup": false, 
     "language": "c", 
+    "name": "grpc_channel_stack_builder_test", 
+    "src": [
+      "test/core/channel/channel_stack_builder_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
     "name": "grpc_channel_stack_test", 
     "src": [
       "test/core/channel/channel_stack_test.c"
@@ -2168,6 +2202,23 @@
       "gpr", 
       "gpr_test_util", 
       "grpc", 
+      "transport_security_test_lib"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "ssl_transport_security_test", 
+    "src": [
+      "test/core/tsi/ssl_transport_security_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
       "grpc_test_util"
     ], 
     "headers": [], 
@@ -2739,12 +2790,15 @@
       "grpc_test_util_unsecure", 
       "grpc_unsecure"
     ], 
-    "headers": [], 
+    "headers": [
+      "test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h"
+    ], 
     "is_filegroup": false, 
     "language": "c++", 
     "name": "bm_fullstack_streaming_ping_pong", 
     "src": [
-      "test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc"
+      "test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc", 
+      "test/cpp/microbenchmarks/fullstack_streaming_ping_pong.h"
     ], 
     "third_party": false, 
     "type": "target"
@@ -2760,12 +2814,15 @@
       "grpc_test_util_unsecure", 
       "grpc_unsecure"
     ], 
-    "headers": [], 
+    "headers": [
+      "test/cpp/microbenchmarks/fullstack_streaming_pump.h"
+    ], 
     "is_filegroup": false, 
     "language": "c++", 
     "name": "bm_fullstack_streaming_pump", 
     "src": [
-      "test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc"
+      "test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc", 
+      "test/cpp/microbenchmarks/fullstack_streaming_pump.h"
     ], 
     "third_party": false, 
     "type": "target"
@@ -2775,6 +2832,7 @@
       "benchmark", 
       "gpr", 
       "gpr_test_util", 
+      "grpc++_test_config", 
       "grpc++_test_util_unsecure", 
       "grpc++_unsecure", 
       "grpc_benchmark", 
@@ -2802,12 +2860,15 @@
       "grpc_test_util_unsecure", 
       "grpc_unsecure"
     ], 
-    "headers": [], 
+    "headers": [
+      "test/cpp/microbenchmarks/fullstack_unary_ping_pong.h"
+    ], 
     "is_filegroup": false, 
     "language": "c++", 
     "name": "bm_fullstack_unary_ping_pong", 
     "src": [
-      "test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc"
+      "test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc", 
+      "test/cpp/microbenchmarks/fullstack_unary_ping_pong.h"
     ], 
     "third_party": false, 
     "type": "target"
@@ -2968,7 +3029,8 @@
       "gpr", 
       "grpc", 
       "grpc++", 
-      "grpc++_codegen_base"
+      "grpc++_codegen_base", 
+      "grpc++_core_stats"
     ], 
     "headers": [
       "src/proto/grpc/testing/control.grpc.pb.h", 
@@ -3001,7 +3063,8 @@
       "gpr", 
       "grpc", 
       "grpc++_codegen_base", 
-      "grpc++_codegen_base_src"
+      "grpc++_codegen_base_src", 
+      "grpc++_core_stats"
     ], 
     "headers": [
       "src/proto/grpc/testing/control.grpc.pb.h", 
@@ -3701,6 +3764,7 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc++_core_stats", 
       "grpc++_test_config", 
       "grpc++_test_util", 
       "grpc_test_util", 
@@ -3722,6 +3786,7 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc++_core_stats", 
       "grpc++_test_config", 
       "grpc++_test_util", 
       "grpc_test_util", 
@@ -3743,6 +3808,7 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc++_core_stats", 
       "grpc++_test_config", 
       "grpc++_test_util", 
       "grpc_test_util", 
@@ -3850,6 +3916,7 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc++_core_stats", 
       "grpc++_test_config", 
       "grpc++_test_util", 
       "grpc_test_util", 
@@ -4017,6 +4084,24 @@
       "gpr", 
       "gpr_test_util", 
       "grpc", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "stats_test", 
+    "src": [
+      "test/core/debug/stats_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
       "grpc++", 
       "grpc_test_util"
     ], 
@@ -5546,6 +5631,86 @@
     "deps": [
       "gpr", 
       "gpr_test_util", 
+      "grpc++_test_config", 
+      "grpc++_test_util_unsecure", 
+      "grpc++_unsecure", 
+      "grpc_test_util_unsecure", 
+      "grpc_unsecure"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "resolver_component_test_unsecure", 
+    "src": [
+      "test/cpp/naming/resolver_component_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_config", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "resolver_component_test", 
+    "src": [
+      "test/cpp/naming/resolver_component_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_config", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "resolver_component_tests_runner_invoker_unsecure", 
+    "src": [
+      "test/cpp/naming/resolver_component_tests_runner_invoker.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
+      "grpc++_test_config", 
+      "grpc++_test_util", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "resolver_component_tests_runner_invoker", 
+    "src": [
+      "test/cpp/naming/resolver_component_tests_runner_invoker.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
       "grpc", 
       "grpc_test_util"
     ], 
@@ -5814,7 +5979,6 @@
       "grpc_lb_policy_grpclb_secure", 
       "grpc_lb_policy_pick_first", 
       "grpc_lb_policy_round_robin", 
-      "grpc_load_reporting", 
       "grpc_max_age_filter", 
       "grpc_message_size_filter", 
       "grpc_resolver_dns_ares", 
@@ -5823,6 +5987,7 @@
       "grpc_resolver_sockaddr", 
       "grpc_secure", 
       "grpc_server_backward_compatibility", 
+      "grpc_server_load_reporting", 
       "grpc_transport_chttp2_client_insecure", 
       "grpc_transport_chttp2_client_secure", 
       "grpc_transport_chttp2_server_insecure", 
@@ -5844,7 +6009,7 @@
     "deps": [
       "gpr", 
       "grpc_base", 
-      "grpc_load_reporting", 
+      "grpc_server_load_reporting", 
       "grpc_transport_chttp2_client_secure", 
       "grpc_transport_cronet_client_secure"
     ], 
@@ -5921,7 +6086,6 @@
       "grpc_lb_policy_grpclb", 
       "grpc_lb_policy_pick_first", 
       "grpc_lb_policy_round_robin", 
-      "grpc_load_reporting", 
       "grpc_max_age_filter", 
       "grpc_message_size_filter", 
       "grpc_resolver_dns_ares", 
@@ -5929,6 +6093,7 @@
       "grpc_resolver_fake", 
       "grpc_resolver_sockaddr", 
       "grpc_server_backward_compatibility", 
+      "grpc_server_load_reporting", 
       "grpc_transport_chttp2_client_insecure", 
       "grpc_transport_chttp2_server_insecure", 
       "grpc_transport_inproc", 
@@ -6023,6 +6188,26 @@
   }, 
   {
     "deps": [
+      "grpc++"
+    ], 
+    "headers": [
+      "src/cpp/util/core_stats.h", 
+      "src/proto/grpc/core/stats.grpc.pb.h", 
+      "src/proto/grpc/core/stats.pb.h", 
+      "src/proto/grpc/core/stats_mock.grpc.pb.h"
+    ], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "grpc++_core_stats", 
+    "src": [
+      "src/cpp/util/core_stats.cc", 
+      "src/cpp/util/core_stats.h"
+    ], 
+    "third_party": false, 
+    "type": "lib"
+  }, 
+  {
+    "deps": [
       "census", 
       "gpr", 
       "grpc", 
@@ -6517,6 +6702,7 @@
     "deps": [
       "grpc", 
       "grpc++", 
+      "grpc++_core_stats", 
       "grpc++_test_util", 
       "grpc_test_util"
     ], 
@@ -7410,6 +7596,9 @@
       "test/core/end2end/tests/simple_delayed_request.c", 
       "test/core/end2end/tests/simple_metadata.c", 
       "test/core/end2end/tests/simple_request.c", 
+      "test/core/end2end/tests/stream_compression_compressed_payload.c", 
+      "test/core/end2end/tests/stream_compression_payload.c", 
+      "test/core/end2end/tests/stream_compression_ping_pong_streaming.c", 
       "test/core/end2end/tests/streaming_error_response.c", 
       "test/core/end2end/tests/trailing_metadata.c", 
       "test/core/end2end/tests/workaround_cronet_compression.c", 
@@ -7488,6 +7677,9 @@
       "test/core/end2end/tests/simple_delayed_request.c", 
       "test/core/end2end/tests/simple_metadata.c", 
       "test/core/end2end/tests/simple_request.c", 
+      "test/core/end2end/tests/stream_compression_compressed_payload.c", 
+      "test/core/end2end/tests/stream_compression_payload.c", 
+      "test/core/end2end/tests/stream_compression_ping_pong_streaming.c", 
       "test/core/end2end/tests/streaming_error_response.c", 
       "test/core/end2end/tests/trailing_metadata.c", 
       "test/core/end2end/tests/workaround_cronet_compression.c", 
@@ -7646,6 +7838,7 @@
       "include/grpc/support/string_util.h", 
       "include/grpc/support/subprocess.h", 
       "include/grpc/support/sync.h", 
+      "include/grpc/support/sync_custom.h", 
       "include/grpc/support/sync_generic.h", 
       "include/grpc/support/sync_posix.h", 
       "include/grpc/support/sync_windows.h", 
@@ -7671,7 +7864,6 @@
       "src/core/lib/support/stack_lockfree.h", 
       "src/core/lib/support/string.h", 
       "src/core/lib/support/string_windows.h", 
-      "src/core/lib/support/thd_internal.h", 
       "src/core/lib/support/time_precise.h", 
       "src/core/lib/support/tmpfile.h"
     ], 
@@ -7695,6 +7887,7 @@
       "include/grpc/support/string_util.h", 
       "include/grpc/support/subprocess.h", 
       "include/grpc/support/sync.h", 
+      "include/grpc/support/sync_custom.h", 
       "include/grpc/support/sync_generic.h", 
       "include/grpc/support/sync_posix.h", 
       "include/grpc/support/sync_windows.h", 
@@ -7720,7 +7913,6 @@
       "src/core/lib/support/stack_lockfree.h", 
       "src/core/lib/support/string.h", 
       "src/core/lib/support/string_windows.h", 
-      "src/core/lib/support/thd_internal.h", 
       "src/core/lib/support/time_precise.h", 
       "src/core/lib/support/tmpfile.h"
     ], 
@@ -7738,6 +7930,7 @@
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
       "include/grpc/impl/codegen/sync.h", 
+      "include/grpc/impl/codegen/sync_custom.h", 
       "include/grpc/impl/codegen/sync_generic.h", 
       "include/grpc/impl/codegen/sync_posix.h", 
       "include/grpc/impl/codegen/sync_windows.h"
@@ -7754,6 +7947,7 @@
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
       "include/grpc/impl/codegen/sync.h", 
+      "include/grpc/impl/codegen/sync_custom.h", 
       "include/grpc/impl/codegen/sync_generic.h", 
       "include/grpc/impl/codegen/sync_posix.h", 
       "include/grpc/impl/codegen/sync_windows.h"
@@ -7813,9 +8007,14 @@
       "src/core/lib/compression/compression.c", 
       "src/core/lib/compression/message_compress.c", 
       "src/core/lib/compression/stream_compression.c", 
+      "src/core/lib/compression/stream_compression_gzip.c", 
+      "src/core/lib/compression/stream_compression_identity.c", 
+      "src/core/lib/debug/stats.c", 
+      "src/core/lib/debug/stats_data.c", 
       "src/core/lib/http/format_request.c", 
       "src/core/lib/http/httpcli.c", 
       "src/core/lib/http/parser.c", 
+      "src/core/lib/iomgr/call_combiner.c", 
       "src/core/lib/iomgr/closure.c", 
       "src/core/lib/iomgr/combiner.c", 
       "src/core/lib/iomgr/endpoint.c", 
@@ -7824,8 +8023,6 @@
       "src/core/lib/iomgr/endpoint_pair_windows.c", 
       "src/core/lib/iomgr/error.c", 
       "src/core/lib/iomgr/ev_epoll1_linux.c", 
-      "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.c", 
-      "src/core/lib/iomgr/ev_epoll_thread_pool_linux.c", 
       "src/core/lib/iomgr/ev_epollex_linux.c", 
       "src/core/lib/iomgr/ev_epollsig_linux.c", 
       "src/core/lib/iomgr/ev_poll_posix.c", 
@@ -7964,9 +8161,14 @@
       "src/core/lib/compression/algorithm_metadata.h", 
       "src/core/lib/compression/message_compress.h", 
       "src/core/lib/compression/stream_compression.h", 
+      "src/core/lib/compression/stream_compression_gzip.h", 
+      "src/core/lib/compression/stream_compression_identity.h", 
+      "src/core/lib/debug/stats.h", 
+      "src/core/lib/debug/stats_data.h", 
       "src/core/lib/http/format_request.h", 
       "src/core/lib/http/httpcli.h", 
       "src/core/lib/http/parser.h", 
+      "src/core/lib/iomgr/call_combiner.h", 
       "src/core/lib/iomgr/closure.h", 
       "src/core/lib/iomgr/combiner.h", 
       "src/core/lib/iomgr/endpoint.h", 
@@ -7974,8 +8176,6 @@
       "src/core/lib/iomgr/error.h", 
       "src/core/lib/iomgr/error_internal.h", 
       "src/core/lib/iomgr/ev_epoll1_linux.h", 
-      "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h", 
-      "src/core/lib/iomgr/ev_epoll_thread_pool_linux.h", 
       "src/core/lib/iomgr/ev_epollex_linux.h", 
       "src/core/lib/iomgr/ev_epollsig_linux.h", 
       "src/core/lib/iomgr/ev_poll_posix.h", 
@@ -8094,9 +8294,14 @@
       "src/core/lib/compression/algorithm_metadata.h", 
       "src/core/lib/compression/message_compress.h", 
       "src/core/lib/compression/stream_compression.h", 
+      "src/core/lib/compression/stream_compression_gzip.h", 
+      "src/core/lib/compression/stream_compression_identity.h", 
+      "src/core/lib/debug/stats.h", 
+      "src/core/lib/debug/stats_data.h", 
       "src/core/lib/http/format_request.h", 
       "src/core/lib/http/httpcli.h", 
       "src/core/lib/http/parser.h", 
+      "src/core/lib/iomgr/call_combiner.h", 
       "src/core/lib/iomgr/closure.h", 
       "src/core/lib/iomgr/combiner.h", 
       "src/core/lib/iomgr/endpoint.h", 
@@ -8104,8 +8309,6 @@
       "src/core/lib/iomgr/error.h", 
       "src/core/lib/iomgr/error_internal.h", 
       "src/core/lib/iomgr/ev_epoll1_linux.h", 
-      "src/core/lib/iomgr/ev_epoll_limited_pollers_linux.h", 
-      "src/core/lib/iomgr/ev_epoll_thread_pool_linux.h", 
       "src/core/lib/iomgr/ev_epollex_linux.h", 
       "src/core/lib/iomgr/ev_epollsig_linux.h", 
       "src/core/lib/iomgr/ev_poll_posix.h", 
@@ -8278,6 +8481,7 @@
       "gpr_codegen"
     ], 
     "headers": [
+      "include/grpc/impl/codegen/byte_buffer.h", 
       "include/grpc/impl/codegen/byte_buffer_reader.h", 
       "include/grpc/impl/codegen/compression_types.h", 
       "include/grpc/impl/codegen/connectivity_state.h", 
@@ -8291,6 +8495,7 @@
     "language": "c", 
     "name": "grpc_codegen", 
     "src": [
+      "include/grpc/impl/codegen/byte_buffer.h", 
       "include/grpc/impl/codegen/byte_buffer_reader.h", 
       "include/grpc/impl/codegen/compression_types.h", 
       "include/grpc/impl/codegen/connectivity_state.h", 
@@ -8457,27 +8662,6 @@
       "grpc_base"
     ], 
     "headers": [
-      "src/core/ext/filters/load_reporting/load_reporting.h", 
-      "src/core/ext/filters/load_reporting/load_reporting_filter.h"
-    ], 
-    "is_filegroup": true, 
-    "language": "c", 
-    "name": "grpc_load_reporting", 
-    "src": [
-      "src/core/ext/filters/load_reporting/load_reporting.c", 
-      "src/core/ext/filters/load_reporting/load_reporting.h", 
-      "src/core/ext/filters/load_reporting/load_reporting_filter.c", 
-      "src/core/ext/filters/load_reporting/load_reporting_filter.h"
-    ], 
-    "third_party": false, 
-    "type": "filegroup"
-  }, 
-  {
-    "deps": [
-      "gpr", 
-      "grpc_base"
-    ], 
-    "headers": [
       "src/core/ext/filters/max_age/max_age_filter.h"
     ], 
     "is_filegroup": true, 
@@ -8685,6 +8869,27 @@
   {
     "deps": [
       "gpr", 
+      "grpc_base"
+    ], 
+    "headers": [
+      "src/core/ext/filters/load_reporting/server_load_reporting_filter.h", 
+      "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
+    ], 
+    "is_filegroup": true, 
+    "language": "c", 
+    "name": "grpc_server_load_reporting", 
+    "src": [
+      "src/core/ext/filters/load_reporting/server_load_reporting_filter.c", 
+      "src/core/ext/filters/load_reporting/server_load_reporting_filter.h", 
+      "src/core/ext/filters/load_reporting/server_load_reporting_plugin.c", 
+      "src/core/ext/filters/load_reporting/server_load_reporting_plugin.h"
+    ], 
+    "third_party": false, 
+    "type": "filegroup"
+  }, 
+  {
+    "deps": [
+      "gpr", 
       "gpr_test_util", 
       "grpc_base", 
       "grpc_client_channel", 
@@ -9093,6 +9298,23 @@
   }, 
   {
     "deps": [
+      "grpc"
+    ], 
+    "headers": [
+      "test/core/tsi/transport_security_test_lib.h"
+    ], 
+    "is_filegroup": true, 
+    "language": "c", 
+    "name": "transport_security_test_lib", 
+    "src": [
+      "test/core/tsi/transport_security_test_lib.c", 
+      "test/core/tsi/transport_security_test_lib.h"
+    ], 
+    "third_party": false, 
+    "type": "filegroup"
+  }, 
+  {
+    "deps": [
       "gpr", 
       "grpc_base", 
       "grpc_trace", 
@@ -9152,6 +9374,7 @@
     "headers": [
       "include/grpc++/impl/codegen/async_stream.h", 
       "include/grpc++/impl/codegen/async_unary_call.h", 
+      "include/grpc++/impl/codegen/byte_buffer.h", 
       "include/grpc++/impl/codegen/call.h", 
       "include/grpc++/impl/codegen/call_hook.h", 
       "include/grpc++/impl/codegen/channel_interface.h", 
@@ -9186,6 +9409,7 @@
     "src": [
       "include/grpc++/impl/codegen/async_stream.h", 
       "include/grpc++/impl/codegen/async_unary_call.h", 
+      "include/grpc++/impl/codegen/byte_buffer.h", 
       "include/grpc++/impl/codegen/call.h", 
       "include/grpc++/impl/codegen/call_hook.h", 
       "include/grpc++/impl/codegen/channel_interface.h", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index be8a0efda3..72dfbc0b98 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -652,6 +652,26 @@
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "fake_transport_security_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
     ], 
@@ -1225,6 +1245,28 @@
     "flaky": false, 
     "gtest": false, 
     "language": "c", 
+    "name": "grpc_channel_stack_builder_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
     "name": "grpc_channel_stack_test", 
     "platforms": [
       "linux", 
@@ -2278,6 +2320,26 @@
     "ci_platforms": [
       "linux", 
       "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "ssl_transport_security_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ], 
@@ -3943,6 +4005,28 @@
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
+    "gtest": true, 
+    "language": "c++", 
+    "name": "stats_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
     "gtest": false, 
     "language": "c++", 
     "name": "status_test", 
@@ -4322,6 +4406,52 @@
   }, 
   {
     "args": [
+      "--test_bin_name=resolver_component_test_unsecure", 
+      "--running_under_bazel=false"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c++", 
+    "name": "resolver_component_tests_runner_invoker_unsecure", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "--test_bin_name=resolver_component_test", 
+      "--running_under_bazel=false"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c++", 
+    "name": "resolver_component_tests_runner_invoker", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "third_party/boringssl/crypto/aes/aes_tests.txt"
     ], 
     "boringssl": true, 
@@ -6955,6 +7085,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -8201,6 +8400,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -9420,6 +9688,72 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -10519,6 +10853,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -11788,6 +12191,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -12853,6 +13325,63 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -14056,6 +14585,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -15325,6 +15923,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -16664,6 +17331,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -17938,6 +18677,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -19253,6 +20061,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -20333,6 +21213,54 @@
   }, 
   {
     "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -21485,6 +22413,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -22565,6 +23565,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -23777,6 +24849,84 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -25061,6 +26211,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -26330,6 +27549,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -27405,6 +28693,54 @@
   }, 
   {
     "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -28652,6 +29988,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -30864,6 +32269,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -32087,6 +33561,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -33168,6 +34711,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
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+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -34414,6 +36026,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -35460,6 +37141,63 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -36640,6 +38378,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -37886,6 +39693,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+workarounds_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -39201,6 +41077,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -40452,6 +42400,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -41503,6 +43520,54 @@
   }, 
   {
     "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -42631,6 +44696,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -43687,6 +45824,78 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -44873,6 +47082,84 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -46107,6 +48394,75 @@
   }, 
   {
     "args": [
+      "stream_compression_compressed_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_payload"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "stream_compression_ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "streaming_error_response"
     ], 
     "ci_platforms": [
@@ -47595,7 +49951,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47645,7 +50001,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47695,7 +50051,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47795,7 +50151,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47895,7 +50251,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47945,7 +50301,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -47995,7 +50351,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48045,7 +50401,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48449,7 +50805,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48499,7 +50855,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48549,7 +50905,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48649,7 +51005,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48749,7 +51105,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48799,7 +51155,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48849,7 +51205,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -48899,7 +51255,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -49574,7 +51930,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -49650,7 +52006,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -49726,7 +52082,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -49878,7 +52234,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50030,7 +52386,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50106,7 +52462,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50182,7 +52538,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50258,7 +52614,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50870,7 +53226,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -50946,7 +53302,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51022,7 +53378,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51174,7 +53530,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51326,7 +53682,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51402,7 +53758,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_client_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_CLIENT\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51478,7 +53834,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"SYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -51554,7 +53910,7 @@
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 0, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 0, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_from_server_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"security_params\": null, \"threads_per_cq\": 3, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"security_params\": null, \"channel_args\": [{\"str_value\": \"throughput\", \"name\": \"grpc.optimization_target\"}, {\"int_value\": 1, \"name\": \"grpc.minimal_stack\"}], \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING_FROM_SERVER\", \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"threads_per_cq\": 3, \"load_params\": {\"closed_loop\": {}}, \"client_type\": \"ASYNC_CLIENT\", \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
diff --git a/tools/run_tests/helper_scripts/pre_build_c.bat b/tools/run_tests/helper_scripts/pre_build_c.bat
deleted file mode 100644
index 4eec024e87..0000000000
--- a/tools/run_tests/helper_scripts/pre_build_c.bat
+++ /dev/null
@@ -1,35 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-@rem Performs nuget restore step for C/C++.
-
-setlocal
-
-@rem enter repo root
-cd /d %~dp0\..\..\..
-
-@rem Location of nuget.exe
-set NUGET=C:\nuget\nuget.exe
-
-if exist %NUGET% (
-  %NUGET% restore vsprojects/grpc.sln || goto :error
-)
-
-endlocal
-
-goto :EOF
-
-:error
-echo Failed!
-exit /b %errorlevel%
diff --git a/tools/run_tests/helper_scripts/pre_build_cmake.bat b/tools/run_tests/helper_scripts/pre_build_cmake.bat
index e4bed8c197..d89fc5fec2 100644
--- a/tools/run_tests/helper_scripts/pre_build_cmake.bat
+++ b/tools/run_tests/helper_scripts/pre_build_cmake.bat
@@ -14,6 +14,9 @@
 
 setlocal
 
+set GENERATOR=%1
+set ARCHITECTURE=%2
+
 cd /d %~dp0\..\..\..
 
 mkdir cmake
@@ -25,7 +28,7 @@ cd build
 @rem If yasm is not on the path, use hardcoded path instead.
 yasm --version || set USE_HARDCODED_YASM_PATH_MAYBE=-DCMAKE_ASM_NASM_COMPILER="C:/Program Files (x86)/yasm/yasm.exe"
 
-cmake -G "Visual Studio 14 2015" -DgRPC_BUILD_TESTS=ON %USE_HARDCODED_YASM_PATH_MAYBE% ../.. || goto :error
+cmake -G %GENERATOR% -A %ARCHITECTURE% -DgRPC_BUILD_TESTS=ON %USE_HARDCODED_YASM_PATH_MAYBE% ../.. || goto :error
 
 endlocal
 
diff --git a/tools/run_tests/performance/bq_upload_result.py b/tools/run_tests/performance/bq_upload_result.py
index 630ac23196..31819d6159 100755
--- a/tools/run_tests/performance/bq_upload_result.py
+++ b/tools/run_tests/performance/bq_upload_result.py
@@ -24,6 +24,7 @@ import os
 import sys
 import time
 import uuid
+import massage_qps_stats
 
 
 gcp_utils_dir = os.path.abspath(os.path.join(
@@ -117,6 +118,7 @@ def _flatten_result_inplace(scenario_result):
   scenario_result['serverCpuUsage'] = scenario_result['summary'].pop('serverCpuUsage', None)
   scenario_result['summary'].pop('successfulRequestsPerSecond', None)
   scenario_result['summary'].pop('failedRequestsPerSecond', None)
+  massage_qps_stats.massage_qps_stats(scenario_result)
 
 
 def _populate_metadata_inplace(scenario_result):
diff --git a/tools/run_tests/performance/massage_qps_stats.py b/tools/run_tests/performance/massage_qps_stats.py
new file mode 100644
index 0000000000..e1620adad2
--- /dev/null
+++ b/tools/run_tests/performance/massage_qps_stats.py
@@ -0,0 +1,196 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Autogenerated by tools/codegen/core/gen_stats_data.py
+
+import massage_qps_stats_helpers
+def massage_qps_stats(scenario_result):
+  for stats in scenario_result["serverStats"] + scenario_result["clientStats"]:
+    if "coreStats" not in stats: return
+    core_stats = stats["coreStats"]
+    del stats["coreStats"]
+    stats["core_client_calls_created"] = massage_qps_stats_helpers.counter(core_stats, "client_calls_created")
+    stats["core_server_calls_created"] = massage_qps_stats_helpers.counter(core_stats, "server_calls_created")
+    stats["core_cqs_created"] = massage_qps_stats_helpers.counter(core_stats, "cqs_created")
+    stats["core_client_channels_created"] = massage_qps_stats_helpers.counter(core_stats, "client_channels_created")
+    stats["core_client_subchannels_created"] = massage_qps_stats_helpers.counter(core_stats, "client_subchannels_created")
+    stats["core_server_channels_created"] = massage_qps_stats_helpers.counter(core_stats, "server_channels_created")
+    stats["core_syscall_poll"] = massage_qps_stats_helpers.counter(core_stats, "syscall_poll")
+    stats["core_syscall_wait"] = massage_qps_stats_helpers.counter(core_stats, "syscall_wait")
+    stats["core_pollset_kick"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kick")
+    stats["core_pollset_kicked_without_poller"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kicked_without_poller")
+    stats["core_pollset_kicked_again"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kicked_again")
+    stats["core_pollset_kick_wakeup_fd"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kick_wakeup_fd")
+    stats["core_pollset_kick_wakeup_cv"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kick_wakeup_cv")
+    stats["core_pollset_kick_own_thread"] = massage_qps_stats_helpers.counter(core_stats, "pollset_kick_own_thread")
+    stats["core_histogram_slow_lookups"] = massage_qps_stats_helpers.counter(core_stats, "histogram_slow_lookups")
+    stats["core_syscall_write"] = massage_qps_stats_helpers.counter(core_stats, "syscall_write")
+    stats["core_syscall_read"] = massage_qps_stats_helpers.counter(core_stats, "syscall_read")
+    stats["core_tcp_backup_pollers_created"] = massage_qps_stats_helpers.counter(core_stats, "tcp_backup_pollers_created")
+    stats["core_tcp_backup_poller_polls"] = massage_qps_stats_helpers.counter(core_stats, "tcp_backup_poller_polls")
+    stats["core_http2_op_batches"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_batches")
+    stats["core_http2_op_cancel"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_cancel")
+    stats["core_http2_op_send_initial_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_send_initial_metadata")
+    stats["core_http2_op_send_message"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_send_message")
+    stats["core_http2_op_send_trailing_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_send_trailing_metadata")
+    stats["core_http2_op_recv_initial_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_recv_initial_metadata")
+    stats["core_http2_op_recv_message"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_recv_message")
+    stats["core_http2_op_recv_trailing_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_op_recv_trailing_metadata")
+    stats["core_http2_settings_writes"] = massage_qps_stats_helpers.counter(core_stats, "http2_settings_writes")
+    stats["core_http2_pings_sent"] = massage_qps_stats_helpers.counter(core_stats, "http2_pings_sent")
+    stats["core_http2_writes_begun"] = massage_qps_stats_helpers.counter(core_stats, "http2_writes_begun")
+    stats["core_http2_writes_offloaded"] = massage_qps_stats_helpers.counter(core_stats, "http2_writes_offloaded")
+    stats["core_http2_writes_continued"] = massage_qps_stats_helpers.counter(core_stats, "http2_writes_continued")
+    stats["core_http2_partial_writes"] = massage_qps_stats_helpers.counter(core_stats, "http2_partial_writes")
+    stats["core_http2_initiate_write_due_to_initial_write"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_initial_write")
+    stats["core_http2_initiate_write_due_to_start_new_stream"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_start_new_stream")
+    stats["core_http2_initiate_write_due_to_send_message"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_send_message")
+    stats["core_http2_initiate_write_due_to_send_initial_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_send_initial_metadata")
+    stats["core_http2_initiate_write_due_to_send_trailing_metadata"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_send_trailing_metadata")
+    stats["core_http2_initiate_write_due_to_retry_send_ping"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_retry_send_ping")
+    stats["core_http2_initiate_write_due_to_continue_pings"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_continue_pings")
+    stats["core_http2_initiate_write_due_to_goaway_sent"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_goaway_sent")
+    stats["core_http2_initiate_write_due_to_rst_stream"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_rst_stream")
+    stats["core_http2_initiate_write_due_to_close_from_api"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_close_from_api")
+    stats["core_http2_initiate_write_due_to_stream_flow_control"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_stream_flow_control")
+    stats["core_http2_initiate_write_due_to_transport_flow_control"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_transport_flow_control")
+    stats["core_http2_initiate_write_due_to_send_settings"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_send_settings")
+    stats["core_http2_initiate_write_due_to_bdp_estimator_ping"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_bdp_estimator_ping")
+    stats["core_http2_initiate_write_due_to_flow_control_unstalled_by_setting"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_flow_control_unstalled_by_setting")
+    stats["core_http2_initiate_write_due_to_flow_control_unstalled_by_update"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_flow_control_unstalled_by_update")
+    stats["core_http2_initiate_write_due_to_application_ping"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_application_ping")
+    stats["core_http2_initiate_write_due_to_keepalive_ping"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_keepalive_ping")
+    stats["core_http2_initiate_write_due_to_transport_flow_control_unstalled"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_transport_flow_control_unstalled")
+    stats["core_http2_initiate_write_due_to_ping_response"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_ping_response")
+    stats["core_http2_initiate_write_due_to_force_rst_stream"] = massage_qps_stats_helpers.counter(core_stats, "http2_initiate_write_due_to_force_rst_stream")
+    stats["core_hpack_recv_indexed"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_indexed")
+    stats["core_hpack_recv_lithdr_incidx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_incidx")
+    stats["core_hpack_recv_lithdr_incidx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_incidx_v")
+    stats["core_hpack_recv_lithdr_notidx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_notidx")
+    stats["core_hpack_recv_lithdr_notidx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_notidx_v")
+    stats["core_hpack_recv_lithdr_nvridx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_nvridx")
+    stats["core_hpack_recv_lithdr_nvridx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_lithdr_nvridx_v")
+    stats["core_hpack_recv_uncompressed"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_uncompressed")
+    stats["core_hpack_recv_huffman"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_huffman")
+    stats["core_hpack_recv_binary"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_binary")
+    stats["core_hpack_recv_binary_base64"] = massage_qps_stats_helpers.counter(core_stats, "hpack_recv_binary_base64")
+    stats["core_hpack_send_indexed"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_indexed")
+    stats["core_hpack_send_lithdr_incidx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_incidx")
+    stats["core_hpack_send_lithdr_incidx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_incidx_v")
+    stats["core_hpack_send_lithdr_notidx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_notidx")
+    stats["core_hpack_send_lithdr_notidx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_notidx_v")
+    stats["core_hpack_send_lithdr_nvridx"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_nvridx")
+    stats["core_hpack_send_lithdr_nvridx_v"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_lithdr_nvridx_v")
+    stats["core_hpack_send_uncompressed"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_uncompressed")
+    stats["core_hpack_send_huffman"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_huffman")
+    stats["core_hpack_send_binary"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_binary")
+    stats["core_hpack_send_binary_base64"] = massage_qps_stats_helpers.counter(core_stats, "hpack_send_binary_base64")
+    stats["core_combiner_locks_initiated"] = massage_qps_stats_helpers.counter(core_stats, "combiner_locks_initiated")
+    stats["core_combiner_locks_scheduled_items"] = massage_qps_stats_helpers.counter(core_stats, "combiner_locks_scheduled_items")
+    stats["core_combiner_locks_scheduled_final_items"] = massage_qps_stats_helpers.counter(core_stats, "combiner_locks_scheduled_final_items")
+    stats["core_combiner_locks_offloaded"] = massage_qps_stats_helpers.counter(core_stats, "combiner_locks_offloaded")
+    stats["core_executor_scheduled_short_items"] = massage_qps_stats_helpers.counter(core_stats, "executor_scheduled_short_items")
+    stats["core_executor_scheduled_long_items"] = massage_qps_stats_helpers.counter(core_stats, "executor_scheduled_long_items")
+    stats["core_executor_scheduled_to_self"] = massage_qps_stats_helpers.counter(core_stats, "executor_scheduled_to_self")
+    stats["core_executor_wakeup_initiated"] = massage_qps_stats_helpers.counter(core_stats, "executor_wakeup_initiated")
+    stats["core_executor_queue_drained"] = massage_qps_stats_helpers.counter(core_stats, "executor_queue_drained")
+    stats["core_executor_push_retries"] = massage_qps_stats_helpers.counter(core_stats, "executor_push_retries")
+    stats["core_executor_threads_created"] = massage_qps_stats_helpers.counter(core_stats, "executor_threads_created")
+    stats["core_executor_threads_used"] = massage_qps_stats_helpers.counter(core_stats, "executor_threads_used")
+    stats["core_server_requested_calls"] = massage_qps_stats_helpers.counter(core_stats, "server_requested_calls")
+    stats["core_server_slowpath_requests_queued"] = massage_qps_stats_helpers.counter(core_stats, "server_slowpath_requests_queued")
+    h = massage_qps_stats_helpers.histogram(core_stats, "call_initial_size")
+    stats["core_call_initial_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_call_initial_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_call_initial_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_call_initial_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_call_initial_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "poll_events_returned")
+    stats["core_poll_events_returned"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_poll_events_returned_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_poll_events_returned_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_poll_events_returned_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_poll_events_returned_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "tcp_write_size")
+    stats["core_tcp_write_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_tcp_write_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_tcp_write_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_tcp_write_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_tcp_write_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "tcp_write_iov_size")
+    stats["core_tcp_write_iov_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_tcp_write_iov_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_tcp_write_iov_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_tcp_write_iov_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_tcp_write_iov_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "tcp_read_size")
+    stats["core_tcp_read_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_tcp_read_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_tcp_read_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_tcp_read_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_tcp_read_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "tcp_read_offer")
+    stats["core_tcp_read_offer"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_tcp_read_offer_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_tcp_read_offer_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_tcp_read_offer_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_tcp_read_offer_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "tcp_read_offer_iov_size")
+    stats["core_tcp_read_offer_iov_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_tcp_read_offer_iov_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_tcp_read_offer_iov_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_tcp_read_offer_iov_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_tcp_read_offer_iov_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "http2_send_message_size")
+    stats["core_http2_send_message_size"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_http2_send_message_size_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_http2_send_message_size_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_http2_send_message_size_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_http2_send_message_size_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "http2_send_initial_metadata_per_write")
+    stats["core_http2_send_initial_metadata_per_write"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_http2_send_initial_metadata_per_write_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_http2_send_initial_metadata_per_write_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_http2_send_initial_metadata_per_write_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_http2_send_initial_metadata_per_write_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "http2_send_message_per_write")
+    stats["core_http2_send_message_per_write"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_http2_send_message_per_write_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_http2_send_message_per_write_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_http2_send_message_per_write_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_http2_send_message_per_write_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "http2_send_trailing_metadata_per_write")
+    stats["core_http2_send_trailing_metadata_per_write"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_http2_send_trailing_metadata_per_write_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_http2_send_trailing_metadata_per_write_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_http2_send_trailing_metadata_per_write_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_http2_send_trailing_metadata_per_write_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "http2_send_flowctl_per_write")
+    stats["core_http2_send_flowctl_per_write"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_http2_send_flowctl_per_write_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_http2_send_flowctl_per_write_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_http2_send_flowctl_per_write_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_http2_send_flowctl_per_write_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "executor_closures_per_wakeup")
+    stats["core_executor_closures_per_wakeup"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_executor_closures_per_wakeup_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_executor_closures_per_wakeup_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_executor_closures_per_wakeup_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_executor_closures_per_wakeup_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
+    h = massage_qps_stats_helpers.histogram(core_stats, "server_cqs_checked")
+    stats["core_server_cqs_checked"] = ",".join("%f" % x for x in h.buckets)
+    stats["core_server_cqs_checked_bkts"] = ",".join("%f" % x for x in h.boundaries)
+    stats["core_server_cqs_checked_50p"] = massage_qps_stats_helpers.percentile(h.buckets, 50, h.boundaries)
+    stats["core_server_cqs_checked_95p"] = massage_qps_stats_helpers.percentile(h.buckets, 95, h.boundaries)
+    stats["core_server_cqs_checked_99p"] = massage_qps_stats_helpers.percentile(h.buckets, 99, h.boundaries)
diff --git a/tools/run_tests/performance/massage_qps_stats_helpers.py b/tools/run_tests/performance/massage_qps_stats_helpers.py
new file mode 100644
index 0000000000..a2fe4ae6c3
--- /dev/null
+++ b/tools/run_tests/performance/massage_qps_stats_helpers.py
@@ -0,0 +1,57 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import collections
+
+def _threshold_for_count_below(buckets, boundaries, count_below):
+  count_so_far = 0
+  for lower_idx in range(0, len(buckets)):
+    count_so_far += buckets[lower_idx]
+    if count_so_far >= count_below:
+      break
+  if count_so_far == count_below:
+    # this bucket hits the threshold exactly... we should be midway through
+    # any run of zero values following the bucket
+    for upper_idx in range(lower_idx + 1, len(buckets)):
+      if buckets[upper_idx] != 0:
+        break
+    return (boundaries[lower_idx] + boundaries[upper_idx]) / 2.0
+  else:
+    # treat values as uniform throughout the bucket, and find where this value
+    # should lie
+    lower_bound = boundaries[lower_idx]
+    upper_bound = boundaries[lower_idx + 1]
+    return (upper_bound -
+           (upper_bound - lower_bound) * (count_so_far - count_below) /
+               float(buckets[lower_idx]))
+
+def percentile(buckets, pctl, boundaries):
+  return _threshold_for_count_below(
+      buckets, boundaries, sum(buckets) * pctl / 100.0)
+
+def counter(core_stats, name):
+  for stat in core_stats['metrics']:
+    if stat['name'] == name:
+      return int(stat.get('count', 0))
+
+Histogram = collections.namedtuple('Histogram', 'buckets boundaries')
+def histogram(core_stats, name):
+  for stat in core_stats['metrics']:
+    if stat['name'] == name:
+      buckets = []
+      boundaries = []
+      for b in stat['histogram']['buckets']:
+        buckets.append(int(b.get('count', 0)))
+        boundaries.append(int(b.get('start', 0)))
+  return Histogram(buckets=buckets, boundaries=boundaries)
diff --git a/tools/run_tests/performance/run_worker_php.sh b/tools/run_tests/performance/run_worker_php.sh
new file mode 100755
index 0000000000..5d0c4fa4fd
--- /dev/null
+++ b/tools/run_tests/performance/run_worker_php.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+source ~/.rvm/scripts/rvm
+set -ex
+
+repo=$(dirname $0)/../../..
+
+# First set up all dependences needed for PHP QPS test
+cd $repo
+cd src/php/tests/qps
+composer install
+# The proxy worker for PHP is implemented in Ruby
+cd ../../../..
+ruby src/ruby/qps/proxy-worker.rb $@
+
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index 8868f40f49..5efc9f5648 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -154,7 +154,9 @@ def _ping_pong_scenario(name, rpc_type,
 
   scenario['client_config']['payload_config'] = _payload_type(use_generic_payload, req_size, resp_size)
 
-  optimization_target = 'blend'
+  # Optimization target of 'throughput' does not work well with epoll1 polling
+  # engine. Use the default value of 'blend'
+  optimization_target = 'throughput'
 
   if unconstrained_client:
     outstanding_calls = outstanding if outstanding is not None else OUTSTANDING_REQUESTS[unconstrained_client]
@@ -169,7 +171,6 @@ def _ping_pong_scenario(name, rpc_type,
     scenario['client_config']['outstanding_rpcs_per_channel'] = deep
     scenario['client_config']['client_channels'] = wide
     scenario['client_config']['async_client_threads'] = 0
-    optimization_target = 'throughput'
   else:
     scenario['client_config']['outstanding_rpcs_per_channel'] = 1
     scenario['client_config']['client_channels'] = 1
@@ -452,6 +453,8 @@ class CXXLanguage:
               unconstrained_client=synchronicity,
               secure=secure,
               minimal_stack=not secure,
+              server_threads_per_cq=3,
+              client_threads_per_cq=3,
               categories=smoketest_categories+[SCALABLE])
 
           # TODO(vjpai): Re-enable this test. It has a lot of timeouts
@@ -797,6 +800,33 @@ class RubyLanguage:
     return 'ruby'
 
 
+class PhpLanguage:
+
+  def __init__(self):
+    pass
+    self.safename = str(self)
+
+  def worker_cmdline(self):
+    return ['tools/run_tests/performance/run_worker_php.sh']
+
+  def worker_port_offset(self):
+    return 800
+
+  def scenarios(self):
+    yield _ping_pong_scenario(
+        'php_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', async_server_threads=1)
+
+    yield _ping_pong_scenario(
+        'php_to_cpp_protobuf_sync_streaming_ping_pong', rpc_type='STREAMING',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        server_language='c++', async_server_threads=1)
+
+  def __str__(self):
+    return 'php'
+
+
 class JavaLanguage:
 
   def __init__(self):
@@ -994,6 +1024,7 @@ LANGUAGES = {
     'node' : NodeLanguage(),
     'node_express': NodeExpressLanguage(),
     'ruby' : RubyLanguage(),
+    'php' : PhpLanguage(),
     'java' : JavaLanguage(),
     'python' : PythonLanguage(),
     'go' : GoLanguage(),
diff --git a/tools/run_tests/performance/scenario_result_schema.json b/tools/run_tests/performance/scenario_result_schema.json
index d7e2e292a7..c7b1904bd1 100644
--- a/tools/run_tests/performance/scenario_result_schema.json
+++ b/tools/run_tests/performance/scenario_result_schema.json
@@ -1,269 +1,1869 @@
 [
   {
-    "name": "metadata",
-    "type": "RECORD",
-    "mode": "NULLABLE",
     "fields": [
       {
-        "name": "buildNumber",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "buildUrl",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "jobName",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "gitCommit",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "gitActualCommit",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "created",
-        "type": "TIMESTAMP",
-        "mode": "NULLABLE"
+        "mode": "NULLABLE", 
+        "name": "buildNumber", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "buildUrl", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "jobName", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "gitCommit", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "gitActualCommit", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "created", 
+        "type": "TIMESTAMP"
       }
-    ]
-  },
+    ], 
+    "mode": "NULLABLE", 
+    "name": "metadata", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "scenario",
-    "type": "RECORD",
-    "mode": "NULLABLE",
     "fields": [
       {
-        "name": "name",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "clientConfig",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "numClients",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "serverConfig",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "numServers",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "warmupSeconds",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "benchmarkSeconds",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
+        "mode": "NULLABLE", 
+        "name": "name", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "clientConfig", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "numClients", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "serverConfig", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "numServers", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "warmupSeconds", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "benchmarkSeconds", 
+        "type": "INTEGER"
       }
-    ]
-  },
+    ], 
+    "mode": "NULLABLE", 
+    "name": "scenario", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "latencies",
-    "type": "STRING",
-    "mode": "NULLABLE"
-  },
+    "mode": "NULLABLE", 
+    "name": "latencies", 
+    "type": "STRING"
+  }, 
   {
-    "name": "clientStats",
-    "type": "RECORD",
-    "mode": "REPEATED",
     "fields": [
       {
-        "name": "latencies",
-        "type": "STRING",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "timeElapsed",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "timeUser",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "timeSystem",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "cqPollCount",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
+        "mode": "NULLABLE", 
+        "name": "latencies", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "timeElapsed", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "timeUser", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "timeSystem", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "cqPollCount", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_client_calls_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_calls_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_cqs_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_client_channels_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_client_subchannels_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_channels_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_syscall_poll", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_syscall_wait", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kick", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kicked_without_poller", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kicked_again", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kick_wakeup_fd", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kick_wakeup_cv", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_pollset_kick_own_thread", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_histogram_slow_lookups", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_syscall_write", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_syscall_read", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_backup_pollers_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_backup_poller_polls", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_batches", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_cancel", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_send_initial_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_send_message", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_send_trailing_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_recv_initial_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_recv_message", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_op_recv_trailing_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_settings_writes", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_pings_sent", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_writes_begun", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_writes_offloaded", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_writes_continued", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_partial_writes", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_initial_write", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_start_new_stream", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_send_message", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_send_initial_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_send_trailing_metadata", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_retry_send_ping", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_continue_pings", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_goaway_sent", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_rst_stream", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_close_from_api", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_stream_flow_control", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_transport_flow_control", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_send_settings", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_bdp_estimator_ping", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_flow_control_unstalled_by_setting", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_flow_control_unstalled_by_update", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_application_ping", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_keepalive_ping", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_transport_flow_control_unstalled", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_ping_response", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_initiate_write_due_to_force_rst_stream", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_indexed", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_incidx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_incidx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_notidx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_notidx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_nvridx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_lithdr_nvridx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_uncompressed", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_huffman", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_binary", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_recv_binary_base64", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_indexed", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_incidx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_incidx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_notidx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_notidx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_nvridx", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_lithdr_nvridx_v", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_uncompressed", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_huffman", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_binary", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_hpack_send_binary_base64", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_combiner_locks_initiated", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_combiner_locks_scheduled_items", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_combiner_locks_scheduled_final_items", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_combiner_locks_offloaded", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_scheduled_short_items", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_scheduled_long_items", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_scheduled_to_self", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_wakeup_initiated", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_queue_drained", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_push_retries", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_threads_created", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_threads_used", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_requested_calls", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_slowpath_requests_queued", 
+        "type": "INTEGER"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_call_initial_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_call_initial_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_call_initial_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_call_initial_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_call_initial_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_poll_events_returned", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_poll_events_returned_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_poll_events_returned_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_poll_events_returned_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_poll_events_returned_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_iov_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_iov_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_iov_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_iov_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_write_iov_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_iov_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_iov_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_iov_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_iov_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_tcp_read_offer_iov_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_size", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_size_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_size_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_size_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_size_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_initial_metadata_per_write", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_initial_metadata_per_write_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_initial_metadata_per_write_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_initial_metadata_per_write_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_initial_metadata_per_write_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_per_write", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_per_write_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_per_write_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_per_write_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_message_per_write_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_trailing_metadata_per_write", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_trailing_metadata_per_write_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_trailing_metadata_per_write_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_trailing_metadata_per_write_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_trailing_metadata_per_write_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_flowctl_per_write", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_flowctl_per_write_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_flowctl_per_write_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_flowctl_per_write_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_http2_send_flowctl_per_write_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_99p", 
+        "type": "FLOAT"
       }
-    ]
-  },
+    ], 
+    "mode": "REPEATED", 
+    "name": "clientStats", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "serverStats",
-    "type": "RECORD",
-    "mode": "REPEATED",
     "fields": [
       {
-        "name": "timeElapsed",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
+        "mode": "NULLABLE", 
+        "name": "timeElapsed", 
+        "type": "FLOAT"
+      }, 
       {
-        "name": "timeUser",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
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+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_executor_closures_per_wakeup_99p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_bkts", 
+        "type": "STRING"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_50p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_95p", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "core_server_cqs_checked_99p", 
+        "type": "FLOAT"
       }
-    ]
-  },
+    ], 
+    "mode": "REPEATED", 
+    "name": "serverStats", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "serverCores",
-    "type": "STRING",
-    "mode": "NULLABLE"
-  },
+    "mode": "NULLABLE", 
+    "name": "serverCores", 
+    "type": "STRING"
+  }, 
   {
-    "name": "summary",
-    "type": "RECORD",
-    "mode": "NULLABLE",
     "fields": [
       {
-        "name": "qps",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "qpsPerServerCore",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "serverSystemTime",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "serverUserTime",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "clientSystemTime",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "clientUserTime",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "latency50",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "latency90",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "latency95",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "latency99",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "latency999",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "clientPollsPerRequest",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "serverPollsPerRequest",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "serverQueriesPerCpuSec",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
-      },
-      {
-        "name": "clientQueriesPerCpuSec",
-        "type": "FLOAT",
-        "mode": "NULLABLE"
+        "mode": "NULLABLE", 
+        "name": "qps", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "qpsPerServerCore", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "serverSystemTime", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "serverUserTime", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "clientSystemTime", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "clientUserTime", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "latency50", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "latency90", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "latency95", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "latency99", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "latency999", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "clientPollsPerRequest", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "serverPollsPerRequest", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "serverQueriesPerCpuSec", 
+        "type": "FLOAT"
+      }, 
+      {
+        "mode": "NULLABLE", 
+        "name": "clientQueriesPerCpuSec", 
+        "type": "FLOAT"
       }
-    ]
-  },
+    ], 
+    "mode": "NULLABLE", 
+    "name": "summary", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "clientSuccess",
-    "type": "STRING",
-    "mode": "NULLABLE"
-  },
+    "mode": "NULLABLE", 
+    "name": "clientSuccess", 
+    "type": "STRING"
+  }, 
   {
-    "name": "serverSuccess",
-    "type": "STRING",
-    "mode": "NULLABLE"
-  },
+    "mode": "NULLABLE", 
+    "name": "serverSuccess", 
+    "type": "STRING"
+  }, 
   {
-    "name": "requestResults",
-    "type": "STRING",
-    "mode": "NULLABLE"
-  },
+    "mode": "NULLABLE", 
+    "name": "requestResults", 
+    "type": "STRING"
+  }, 
   {
-    "name": "serverCpuStats",
-    "type": "RECORD",
-    "mode": "REPEATED",
     "fields": [
       {
-        "name": "totalCpuTime",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
-      },
+        "mode": "NULLABLE", 
+        "name": "totalCpuTime", 
+        "type": "INTEGER"
+      }, 
       {
-        "name": "idleCpuTime",
-        "type": "INTEGER",
-        "mode": "NULLABLE"
+        "mode": "NULLABLE", 
+        "name": "idleCpuTime", 
+        "type": "INTEGER"
       }
-    ]
-  },
+    ], 
+    "mode": "REPEATED", 
+    "name": "serverCpuStats", 
+    "type": "RECORD"
+  }, 
   {
-    "name": "serverCpuUsage",
-    "type": "FLOAT",
-    "mode": "NULLABLE"
+    "mode": "NULLABLE", 
+    "name": "serverCpuUsage", 
+    "type": "FLOAT"
   }
-]
+]
\ No newline at end of file
diff --git a/tools/run_tests/python_utils/filter_pull_request_tests.py b/tools/run_tests/python_utils/filter_pull_request_tests.py
index 032c0701e2..f99143fdd7 100644
--- a/tools/run_tests/python_utils/filter_pull_request_tests.py
+++ b/tools/run_tests/python_utils/filter_pull_request_tests.py
@@ -86,7 +86,6 @@ _WHITELIST_DICT = {
   '^test/distrib/php/': [_PHP_TEST_SUITE],
   '^test/distrib/python/': [_PYTHON_TEST_SUITE],
   '^test/distrib/ruby/': [_RUBY_TEST_SUITE],
-  '^tools/internal_ci/': [],
   '^vsprojects/': [_WINDOWS_TEST_SUITE],
   'binding\.gyp$': [_NODE_TEST_SUITE],
   'composer\.json$': [_PHP_TEST_SUITE],
@@ -128,7 +127,7 @@ def _get_changed_files(base_branch):
   # Get file changes between branch and merge-base of specified branch
   # Not combined to be Windows friendly
   base_commit = check_output(["git", "merge-base", base_branch, "HEAD"]).rstrip()
-  return check_output(["git", "diff", base_commit, "--name-only"]).splitlines()
+  return check_output(["git", "diff", base_commit, "--name-only", "HEAD"]).splitlines()
 
 
 def _can_skip_tests(file_names, triggers):
diff --git a/tools/run_tests/python_utils/jobset.py b/tools/run_tests/python_utils/jobset.py
index 08d652ae3f..062c79a0de 100755
--- a/tools/run_tests/python_utils/jobset.py
+++ b/tools/run_tests/python_utils/jobset.py
@@ -71,10 +71,8 @@ def platform_string():
 if platform_string() == 'windows':
   pass
 else:
-  have_alarm = False
   def alarm_handler(unused_signum, unused_frame):
-    global have_alarm
-    have_alarm = False
+    pass
 
   signal.signal(signal.SIGCHLD, lambda unused_signum, unused_frame: None)
   signal.signal(signal.SIGALRM, alarm_handler)
@@ -224,7 +222,7 @@ class JobResult(object):
     self.retries = 0
     self.message = ''
     self.cpu_estimated = 1
-    self.cpu_measured = 0
+    self.cpu_measured = 1
 
 
 def read_from_start(f):
@@ -367,10 +365,9 @@ class Jobset(object):
   """Manages one run of jobs."""
 
   def __init__(self, check_cancelled, maxjobs, newline_on_success, travis,
-               stop_on_failure, add_env, quiet_success, max_time, clear_alarms):
+               stop_on_failure, add_env, quiet_success, max_time):
     self._running = set()
     self._check_cancelled = check_cancelled
-    self._clear_alarms = clear_alarms
     self._cancelled = False
     self._failures = 0
     self._completed = 0
@@ -455,10 +452,7 @@ class Jobset(object):
       if platform_string() == 'windows':
         time.sleep(0.1)
       else:
-        global have_alarm
-        if not have_alarm:
-          have_alarm = True
-          signal.alarm(10)
+        signal.alarm(10)
         signal.pause()
 
   def cancelled(self):
@@ -474,10 +468,7 @@ class Jobset(object):
     while self._running:
       if self.cancelled(): pass  # poll cancellation
       self.reap()
-    # Clear the alarms when finished to avoid a race condition causing job
-    # failures. Don't do this when running multi-VM tests because clearing
-    # the alarms causes the test to stall
-    if platform_string() != 'windows' and self._clear_alarms:
+    if platform_string() != 'windows':
       signal.alarm(0)
     return not self.cancelled() and self._failures == 0
 
@@ -507,8 +498,7 @@ def run(cmdlines,
         add_env={},
         skip_jobs=False,
         quiet_success=False,
-        max_time=-1,
-        clear_alarms=True):
+        max_time=-1):
   if skip_jobs:
     resultset = {}
     skipped_job_result = JobResult()
@@ -520,7 +510,7 @@ def run(cmdlines,
   js = Jobset(check_cancelled,
               maxjobs if maxjobs is not None else _DEFAULT_MAX_JOBS,
               newline_on_success, travis, stop_on_failure, add_env,
-              quiet_success, max_time, clear_alarms)
+              quiet_success, max_time)
   for cmdline, remaining in tag_remaining(cmdlines):
     if not js.start(cmdline):
       break
diff --git a/tools/run_tests/run_microbenchmark.py b/tools/run_tests/run_microbenchmark.py
index 312abd59c4..c136af58cb 100755
--- a/tools/run_tests/run_microbenchmark.py
+++ b/tools/run_tests/run_microbenchmark.py
@@ -83,12 +83,14 @@ def collect_latency(bm_name, args):
         jobset.JobSpec(['bins/basicprof/%s' % bm_name,
                         '--benchmark_filter=^%s$' % line,
                         '--benchmark_min_time=0.05'],
-                       environ={'LATENCY_TRACE': '%s.trace' % fnize(line)}))
+                       environ={'LATENCY_TRACE': '%s.trace' % fnize(line)},
+                       shortname='profile-%s' % fnize(line)))
     profile_analysis.append(
         jobset.JobSpec([sys.executable,
                         'tools/profiling/latency_profile/profile_analyzer.py',
                         '--source', '%s.trace' % fnize(line), '--fmt', 'simple',
-                        '--out', 'reports/%s.txt' % fnize(line)], timeout_seconds=None))
+                        '--out', 'reports/%s.txt' % fnize(line)], timeout_seconds=20*60,
+                        shortname='analyze-%s' % fnize(line)))
     cleanup.append(jobset.JobSpec(['rm', '%s.trace' % fnize(line)]))
     # periodically flush out the list of jobs: profile_analysis jobs at least
     # consume upwards of five gigabytes of ram in some cases, and so analysing
@@ -126,14 +128,16 @@ def collect_perf(bm_name, args):
                         '-g', '-F', '997',
                         'bins/mutrace/%s' % bm_name,
                         '--benchmark_filter=^%s$' % line,
-                        '--benchmark_min_time=10']))
+                        '--benchmark_min_time=10'],
+                        shortname='perf-%s' % fnize(line)))
     profile_analysis.append(
         jobset.JobSpec(['tools/run_tests/performance/process_local_perf_flamegraphs.sh'],
                        environ = {
                            'PERF_BASE_NAME': fnize(line),
                            'OUTPUT_DIR': 'reports',
                            'OUTPUT_FILENAME': fnize(line),
-                       }))
+                       },
+                       shortname='flame-%s' % fnize(line)))
     cleanup.append(jobset.JobSpec(['rm', '%s-perf.data' % fnize(line)]))
     cleanup.append(jobset.JobSpec(['rm', '%s-out.perf' % fnize(line)]))
     # periodically flush out the list of jobs: temporary space required for this
diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 0db5e4ef83..1bbab9e894 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -183,7 +183,7 @@ def archive_repo(languages):
 
   jobset.message('START', 'Archiving local repository.', do_newline=True)
   num_failures, _ = jobset.run(
-      [archive_job], newline_on_success=True, maxjobs=1, clear_alarms=False)
+      [archive_job], newline_on_success=True, maxjobs=1)
   if num_failures == 0:
     jobset.message('SUCCESS',
                    'Archive with local repository created successfully.',
@@ -215,7 +215,7 @@ def prepare_remote_hosts(hosts, prepare_local=False):
             timeout_seconds=prepare_timeout))
   jobset.message('START', 'Preparing hosts.', do_newline=True)
   num_failures, _ = jobset.run(
-      prepare_jobs, newline_on_success=True, maxjobs=10, clear_alarms=False)
+      prepare_jobs, newline_on_success=True, maxjobs=10)
   if num_failures == 0:
     jobset.message('SUCCESS',
                    'Prepare step completed successfully.',
@@ -248,7 +248,7 @@ def build_on_remote_hosts(hosts, languages=scenario_config.LANGUAGES.keys(), bui
             timeout_seconds=build_timeout))
   jobset.message('START', 'Building.', do_newline=True)
   num_failures, _ = jobset.run(
-      build_jobs, newline_on_success=True, maxjobs=10, clear_alarms=False)
+      build_jobs, newline_on_success=True, maxjobs=10)
   if num_failures == 0:
     jobset.message('SUCCESS',
                    'Built successfully.',
@@ -281,18 +281,18 @@ def create_qpsworkers(languages, worker_hosts, perf_cmd=None):
           for worker_idx, worker in enumerate(workers)]
 
 
-def perf_report_processor_job(worker_host, perf_base_name, output_filename):
+def perf_report_processor_job(worker_host, perf_base_name, output_filename, flame_graph_reports):
   print('Creating perf report collection job for %s' % worker_host)
   cmd = ''
   if worker_host != 'localhost':
     user_at_host = "%s@%s" % (_REMOTE_HOST_USERNAME, worker_host)
     cmd = "USER_AT_HOST=%s OUTPUT_FILENAME=%s OUTPUT_DIR=%s PERF_BASE_NAME=%s\
          tools/run_tests/performance/process_remote_perf_flamegraphs.sh" \
-          % (user_at_host, output_filename, args.flame_graph_reports, perf_base_name)
+          % (user_at_host, output_filename, flame_graph_reports, perf_base_name)
   else:
     cmd = "OUTPUT_FILENAME=%s OUTPUT_DIR=%s PERF_BASE_NAME=%s\
           tools/run_tests/performance/process_local_perf_flamegraphs.sh" \
-          % (output_filename, args.flame_graph_reports, perf_base_name)
+          % (output_filename, flame_graph_reports, perf_base_name)
 
   return jobset.JobSpec(cmdline=cmd,
                         timeout_seconds=3*60,
@@ -332,7 +332,7 @@ def create_scenarios(languages, workers_by_lang, remote_host=None, regex='.*',
 
   for language in languages:
     for scenario_json in language.scenarios():
-      if re.search(args.regex, scenario_json['name']):
+      if re.search(regex, scenario_json['name']):
         categories = scenario_json.get('CATEGORIES', ['scalable', 'smoketest'])
         if category in categories or category == 'all':
           workers = workers_by_lang[str(language)][:]
@@ -376,7 +376,7 @@ def create_scenarios(languages, workers_by_lang, remote_host=None, regex='.*',
   return scenarios
 
 
-def finish_qps_workers(jobs):
+def finish_qps_workers(jobs, qpsworker_jobs):
   """Waits for given jobs to finish and eventually kills them."""
   retries = 0
   num_killed = 0
@@ -399,10 +399,10 @@ profile_output_files = []
 # Collect perf text reports and flamegraphs if perf_cmd was used
 # Note the base names of perf text reports are used when creating and processing
 # perf data. The scenario name uniqifies the output name in the final
-# perf reports directory. 
+# perf reports directory.
 # Alos, the perf profiles need to be fetched and processed after each scenario
 # in order to avoid clobbering the output files.
-def run_collect_perf_profile_jobs(hosts_and_base_names, scenario_name):
+def run_collect_perf_profile_jobs(hosts_and_base_names, scenario_name, flame_graph_reports):
   perf_report_jobs = []
   global profile_output_files
   for host_and_port in hosts_and_base_names:
@@ -411,181 +411,184 @@ def run_collect_perf_profile_jobs(hosts_and_base_names, scenario_name):
     # from the base filename, create .svg output filename
     host = host_and_port.split(':')[0]
     profile_output_files.append('%s.svg' % output_filename)
-    perf_report_jobs.append(perf_report_processor_job(host, perf_base_name, output_filename))
+    perf_report_jobs.append(perf_report_processor_job(host, perf_base_name, output_filename, flame_graph_reports))
 
   jobset.message('START', 'Collecting perf reports from qps workers', do_newline=True)
-  failures, _ = jobset.run(perf_report_jobs, newline_on_success=True, maxjobs=1, clear_alarms=False)
+  failures, _ = jobset.run(perf_report_jobs, newline_on_success=True, maxjobs=1)
   jobset.message('END', 'Collecting perf reports from qps workers', do_newline=True)
   return failures
 
+def main():
+  argp = argparse.ArgumentParser(description='Run performance tests.')
+  argp.add_argument('-l', '--language',
+                    choices=['all'] + sorted(scenario_config.LANGUAGES.keys()),
+                    nargs='+',
+                    required=True,
+                    help='Languages to benchmark.')
+  argp.add_argument('--remote_driver_host',
+                    default=None,
+                    help='Run QPS driver on given host. By default, QPS driver is run locally.')
+  argp.add_argument('--remote_worker_host',
+                    nargs='+',
+                    default=[],
+                    help='Worker hosts where to start QPS workers.')
+  argp.add_argument('--dry_run',
+                    default=False,
+                    action='store_const',
+                    const=True,
+                    help='Just list scenarios to be run, but don\'t run them.')
+  argp.add_argument('-r', '--regex', default='.*', type=str,
+                    help='Regex to select scenarios to run.')
+  argp.add_argument('--bq_result_table', default=None, type=str,
+                    help='Bigquery "dataset.table" to upload results to.')
+  argp.add_argument('--category',
+                    choices=['smoketest','all','scalable','sweep'],
+                    default='all',
+                    help='Select a category of tests to run.')
+  argp.add_argument('--netperf',
+                    default=False,
+                    action='store_const',
+                    const=True,
+                    help='Run netperf benchmark as one of the scenarios.')
+  argp.add_argument('--server_cpu_load',
+                    default=0, type=int,
+                    help='Select a targeted server cpu load to run. 0 means ignore this flag')
+  argp.add_argument('-x', '--xml_report', default='report.xml', type=str,
+                    help='Name of XML report file to generate.')
+  argp.add_argument('--perf_args',
+                    help=('Example usage: "--perf_args=record -F 99 -g". '
+                          'Wrap QPS workers in a perf command '
+                          'with the arguments to perf specified here. '
+                          '".svg" flame graph profiles will be '
+                          'created for each Qps Worker on each scenario. '
+                          'Files will output to "<repo_root>/<args.flame_graph_reports>" '
+                          'directory. Output files from running the worker '
+                          'under perf are saved in the repo root where its ran. '
+                          'Note that the perf "-g" flag is necessary for '
+                          'flame graphs generation to work (assuming the binary '
+                          'being profiled uses frame pointers, check out '
+                          '"--call-graph dwarf" option using libunwind otherwise.) '
+                          'Also note that the entire "--perf_args=<arg(s)>" must '
+                          'be wrapped in quotes as in the example usage. '
+                          'If the "--perg_args" is unspecified, "perf" will '
+                          'not be used at all. '
+                          'See http://www.brendangregg.com/perf.html '
+                          'for more general perf examples.'))
+  argp.add_argument('--skip_generate_flamegraphs',
+                    default=False,
+                    action='store_const',
+                    const=True,
+                    help=('Turn flame graph generation off. '
+                          'May be useful if "perf_args" arguments do not make sense for '
+                          'generating flamegraphs (e.g., "--perf_args=stat ...")'))
+  argp.add_argument('-f', '--flame_graph_reports', default='perf_reports', type=str,
+                    help='Name of directory to output flame graph profiles to, if any are created.')
+
+  args = argp.parse_args()
+
+  languages = set(scenario_config.LANGUAGES[l]
+                  for l in itertools.chain.from_iterable(
+                        six.iterkeys(scenario_config.LANGUAGES) if x == 'all'
+                        else [x] for x in args.language))
+
+
+  # Put together set of remote hosts where to run and build
+  remote_hosts = set()
+  if args.remote_worker_host:
+    for host in args.remote_worker_host:
+      remote_hosts.add(host)
+  if args.remote_driver_host:
+    remote_hosts.add(args.remote_driver_host)
+
+  if not args.dry_run:
+    if remote_hosts:
+      archive_repo(languages=[str(l) for l in languages])
+      prepare_remote_hosts(remote_hosts, prepare_local=True)
+    else:
+      prepare_remote_hosts([], prepare_local=True)
+
+  build_local = False
+  if not args.remote_driver_host:
+    build_local = True
+  if not args.dry_run:
+    build_on_remote_hosts(remote_hosts, languages=[str(l) for l in languages], build_local=build_local)
+
+  perf_cmd = None
+  if args.perf_args:
+    print('Running workers under perf profiler')
+    # Expect /usr/bin/perf to be installed here, as is usual
+    perf_cmd = ['/usr/bin/perf']
+    perf_cmd.extend(re.split('\s+', args.perf_args))
+
+  qpsworker_jobs = create_qpsworkers(languages, args.remote_worker_host, perf_cmd=perf_cmd)
+
+  # get list of worker addresses for each language.
+  workers_by_lang = dict([(str(language), []) for language in languages])
+  for job in qpsworker_jobs:
+    workers_by_lang[str(job.language)].append(job)
+
+  scenarios = create_scenarios(languages,
+                             workers_by_lang=workers_by_lang,
+                             remote_host=args.remote_driver_host,
+                             regex=args.regex,
+                             category=args.category,
+                             bq_result_table=args.bq_result_table,
+                             netperf=args.netperf,
+                             netperf_hosts=args.remote_worker_host,
+                             server_cpu_load=args.server_cpu_load)
+
+  if not scenarios:
+    raise Exception('No scenarios to run')
+
+  total_scenario_failures = 0
+  qps_workers_killed = 0
+  merged_resultset = {}
+  perf_report_failures = 0
+
+  for scenario in scenarios:
+    if args.dry_run:
+      print(scenario.name)
+    else:
+      scenario_failures = 0
+      try:
+        for worker in scenario.workers:
+          worker.start()
+        jobs = [scenario.jobspec]
+        if scenario.workers:
+          jobs.append(create_quit_jobspec(scenario.workers, remote_host=args.remote_driver_host))
+        scenario_failures, resultset = jobset.run(jobs, newline_on_success=True, maxjobs=1)
+        total_scenario_failures += scenario_failures
+        merged_resultset = dict(itertools.chain(six.iteritems(merged_resultset),
+                                                six.iteritems(resultset)))
+      finally:
+        # Consider qps workers that need to be killed as failures
+        qps_workers_killed += finish_qps_workers(scenario.workers, qpsworker_jobs)
+
+      if perf_cmd and scenario_failures == 0 and not args.skip_generate_flamegraphs:
+        workers_and_base_names = {}
+        for worker in scenario.workers:
+          if not worker.perf_file_base_name:
+            raise Exception('using perf buf perf report filename is unspecified')
+          workers_and_base_names[worker.host_and_port] = worker.perf_file_base_name
+        perf_report_failures += run_collect_perf_profile_jobs(workers_and_base_names, scenario.name, args.flame_graph_reports)
+
+
+  # Still write the index.html even if some scenarios failed.
+  # 'profile_output_files' will only have names for scenarios that passed
+  if perf_cmd and not args.skip_generate_flamegraphs:
+    # write the index fil to the output dir, with all profiles from all scenarios/workers
+    report_utils.render_perf_profiling_results('%s/index.html' % args.flame_graph_reports, profile_output_files)
+
+  report_utils.render_junit_xml_report(merged_resultset, args.xml_report,
+                                       suite_name='benchmarks')
+
+  if total_scenario_failures > 0 or qps_workers_killed > 0:
+    print('%s scenarios failed and %s qps worker jobs killed' % (total_scenario_failures, qps_workers_killed))
+    sys.exit(1)
 
-argp = argparse.ArgumentParser(description='Run performance tests.')
-argp.add_argument('-l', '--language',
-                  choices=['all'] + sorted(scenario_config.LANGUAGES.keys()),
-                  nargs='+',
-                  required=True,
-                  help='Languages to benchmark.')
-argp.add_argument('--remote_driver_host',
-                  default=None,
-                  help='Run QPS driver on given host. By default, QPS driver is run locally.')
-argp.add_argument('--remote_worker_host',
-                  nargs='+',
-                  default=[],
-                  help='Worker hosts where to start QPS workers.')
-argp.add_argument('--dry_run',
-                  default=False,
-                  action='store_const',
-                  const=True,
-                  help='Just list scenarios to be run, but don\'t run them.')
-argp.add_argument('-r', '--regex', default='.*', type=str,
-                  help='Regex to select scenarios to run.')
-argp.add_argument('--bq_result_table', default=None, type=str,
-                  help='Bigquery "dataset.table" to upload results to.')
-argp.add_argument('--category',
-                  choices=['smoketest','all','scalable','sweep'],
-                  default='all',
-                  help='Select a category of tests to run.')
-argp.add_argument('--netperf',
-                  default=False,
-                  action='store_const',
-                  const=True,
-                  help='Run netperf benchmark as one of the scenarios.')
-argp.add_argument('--server_cpu_load',
-                  default=0, type=int,
-                  help='Select a targeted server cpu load to run. 0 means ignore this flag')
-argp.add_argument('-x', '--xml_report', default='report.xml', type=str,
-                  help='Name of XML report file to generate.')
-argp.add_argument('--perf_args',
-                  help=('Example usage: "--perf_args=record -F 99 -g". '
-                        'Wrap QPS workers in a perf command '
-                        'with the arguments to perf specified here. '
-                        '".svg" flame graph profiles will be '
-                        'created for each Qps Worker on each scenario. '
-                        'Files will output to "<repo_root>/<args.flame_graph_reports>" '
-                        'directory. Output files from running the worker '
-                        'under perf are saved in the repo root where its ran. '
-                        'Note that the perf "-g" flag is necessary for '
-                        'flame graphs generation to work (assuming the binary '
-                        'being profiled uses frame pointers, check out '
-                        '"--call-graph dwarf" option using libunwind otherwise.) '
-                        'Also note that the entire "--perf_args=<arg(s)>" must '
-                        'be wrapped in quotes as in the example usage. '
-                        'If the "--perg_args" is unspecified, "perf" will '
-                        'not be used at all. '
-                        'See http://www.brendangregg.com/perf.html '
-                        'for more general perf examples.'))
-argp.add_argument('--skip_generate_flamegraphs',
-                  default=False,
-                  action='store_const',
-                  const=True,
-                  help=('Turn flame graph generation off. '
-                        'May be useful if "perf_args" arguments do not make sense for '
-                        'generating flamegraphs (e.g., "--perf_args=stat ...")'))
-argp.add_argument('-f', '--flame_graph_reports', default='perf_reports', type=str,
-                  help='Name of directory to output flame graph profiles to, if any are created.')
-
-args = argp.parse_args()
-
-languages = set(scenario_config.LANGUAGES[l]
-                for l in itertools.chain.from_iterable(
-                      six.iterkeys(scenario_config.LANGUAGES) if x == 'all'
-                      else [x] for x in args.language))
-
-
-# Put together set of remote hosts where to run and build
-remote_hosts = set()
-if args.remote_worker_host:
-  for host in args.remote_worker_host:
-    remote_hosts.add(host)
-if args.remote_driver_host:
-  remote_hosts.add(args.remote_driver_host)
-
-if not args.dry_run:
-  if remote_hosts:
-    archive_repo(languages=[str(l) for l in languages])
-    prepare_remote_hosts(remote_hosts, prepare_local=True)
-  else:
-    prepare_remote_hosts([], prepare_local=True)
-
-build_local = False
-if not args.remote_driver_host:
-  build_local = True
-if not args.dry_run:
-  build_on_remote_hosts(remote_hosts, languages=[str(l) for l in languages], build_local=build_local)
-
-perf_cmd = None
-if args.perf_args:
-  print('Running workers under perf profiler')
-  # Expect /usr/bin/perf to be installed here, as is usual
-  perf_cmd = ['/usr/bin/perf']
-  perf_cmd.extend(re.split('\s+', args.perf_args))
-
-qpsworker_jobs = create_qpsworkers(languages, args.remote_worker_host, perf_cmd=perf_cmd)
-
-# get list of worker addresses for each language.
-workers_by_lang = dict([(str(language), []) for language in languages])
-for job in qpsworker_jobs:
-  workers_by_lang[str(job.language)].append(job)
-
-scenarios = create_scenarios(languages,
-                           workers_by_lang=workers_by_lang,
-                           remote_host=args.remote_driver_host,
-                           regex=args.regex,
-                           category=args.category,
-                           bq_result_table=args.bq_result_table,
-                           netperf=args.netperf,
-                           netperf_hosts=args.remote_worker_host,
-                           server_cpu_load=args.server_cpu_load)
-
-if not scenarios:
-  raise Exception('No scenarios to run')
-
-total_scenario_failures = 0
-qps_workers_killed = 0
-merged_resultset = {}
-perf_report_failures = 0
-
-for scenario in scenarios:
-  if args.dry_run:
-    print(scenario.name)
-  else:
-    scenario_failures = 0
-    try:
-      for worker in scenario.workers:
-        worker.start()
-      jobs = [scenario.jobspec]
-      if scenario.workers:
-        jobs.append(create_quit_jobspec(scenario.workers, remote_host=args.remote_driver_host))
-      scenario_failures, resultset = jobset.run(jobs, newline_on_success=True, maxjobs=1, clear_alarms=False)
-      total_scenario_failures += scenario_failures
-      merged_resultset = dict(itertools.chain(six.iteritems(merged_resultset),
-                                              six.iteritems(resultset)))
-    finally:
-      # Consider qps workers that need to be killed as failures
-      qps_workers_killed += finish_qps_workers(scenario.workers)
-
-    if perf_cmd and scenario_failures == 0 and not args.skip_generate_flamegraphs:
-      workers_and_base_names = {}
-      for worker in scenario.workers:
-        if not worker.perf_file_base_name:
-          raise Exception('using perf buf perf report filename is unspecified')
-        workers_and_base_names[worker.host_and_port] = worker.perf_file_base_name
-      perf_report_failures += run_collect_perf_profile_jobs(workers_and_base_names, scenario.name)
-
-
-# Still write the index.html even if some scenarios failed.
-# 'profile_output_files' will only have names for scenarios that passed
-if perf_cmd and not args.skip_generate_flamegraphs:
-  # write the index fil to the output dir, with all profiles from all scenarios/workers
-  report_utils.render_perf_profiling_results('%s/index.html' % args.flame_graph_reports, profile_output_files)
-
-report_utils.render_junit_xml_report(merged_resultset, args.xml_report,
-                                     suite_name='benchmarks')
-
-if total_scenario_failures > 0 or qps_workers_killed > 0:
-  print('%s scenarios failed and %s qps worker jobs killed' % (total_scenario_failures, qps_workers_killed))
-  sys.exit(1)
-
-if perf_report_failures > 0:
-  print('%s perf profile collection jobs failed' % perf_report_failures)
-  sys.exit(1)
+  if perf_report_failures > 0:
+    print('%s perf profile collection jobs failed' % perf_report_failures)
+    sys.exit(1)
+
+if __name__ == "__main__":
+  main()
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index e8a4be3343..b38108d456 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -69,17 +69,22 @@ _POLLING_STRATEGIES = {
 }
 
 
-def get_flaky_tests(limit=None):
+BigQueryTestData = collections.namedtuple('BigQueryTestData', 'name flaky cpu')
+
+
+def get_bqtest_data(limit=None):
   import big_query_utils
 
   bq = big_query_utils.create_big_query()
   query = """
 SELECT
   filtered_test_name,
+  SUM(result != 'PASSED' AND result != 'SKIPPED') > 0 as flaky,
+  MAX(cpu_measured) + 0.01 as cpu
   FROM (
   SELECT
     REGEXP_REPLACE(test_name, r'/\d+', '') AS filtered_test_name,
-    result
+    result, cpu_measured
   FROM
     [grpc-testing:jenkins_test_results.aggregate_results]
   WHERE
@@ -87,17 +92,15 @@ SELECT
     AND platform = '"""+platform_string()+"""'
     AND NOT REGEXP_MATCH(job_name, '.*portability.*') )
 GROUP BY
-  filtered_test_name
-HAVING
-  SUM(result != 'PASSED' AND result != 'SKIPPED') > 0"""
+  filtered_test_name"""
   if limit:
     query += " limit {}".format(limit)
   query_job = big_query_utils.sync_query_job(bq, 'grpc-testing', query)
   page = bq.jobs().getQueryResults(
       pageToken=None,
       **query_job['jobReference']).execute(num_retries=3)
-  flake_names = [row['f'][0]['v'] for row in page['rows']]
-  return flake_names
+  test_data = [BigQueryTestData(row['f'][0]['v'], row['f'][1]['v'] == 'true', float(row['f'][2]['v'])) for row in page['rows']]
+  return test_data
 
 
 def platform_string():
@@ -141,6 +144,9 @@ class Config(object):
     if not flaky and shortname and shortname in flaky_tests:
       print('Setting %s to flaky' % shortname)
       flaky = True
+    if shortname in shortname_to_cpu:
+      print('Update CPU cost for %s: %f -> %f' % (shortname, cpu_cost, shortname_to_cpu[shortname]))
+      cpu_cost = shortname_to_cpu[shortname]
     return jobset.JobSpec(cmdline=self.tool_prefix + cmdline,
                           shortname=shortname,
                           environ=actual_environ,
@@ -234,15 +240,19 @@ class CLanguage(object):
   def configure(self, config, args):
     self.config = config
     self.args = args
-    if self.args.compiler == 'cmake':
+    if self.platform == 'windows':
+      _check_compiler(self.args.compiler, ['default', 'cmake', 'cmake_vs2015',
+                                           'cmake_vs2017'])
+      _check_arch(self.args.arch, ['default', 'x64', 'x86'])
+      self._cmake_generator_option = 'Visual Studio 15 2017' if self.args.compiler == 'cmake_vs2017' else 'Visual Studio 14 2015'
+      self._cmake_arch_option = 'x64' if self.args.arch == 'x64' else 'Win32'
+      self._use_cmake = True
+      self._make_options = []
+    elif self.args.compiler == 'cmake':
       _check_arch(self.args.arch, ['default'])
       self._use_cmake = True
       self._docker_distro = 'jessie'
       self._make_options = []
-    elif self.platform == 'windows':
-      self._use_cmake = False
-      self._make_options = [_windows_toolset_option(self.args.compiler),
-                            _windows_arch_option(self.args.arch)]
     else:
       self._use_cmake = False
       self._docker_distro, self._make_options = self._compiler_options(self.args.use_docker,
@@ -303,13 +313,7 @@ class CLanguage(object):
         if self.args.iomgr_platform in target.get('exclude_iomgrs', []):
           continue
         if self.platform == 'windows':
-          if self._use_cmake:
-            binary = 'cmake/build/%s/%s.exe' % (_MSBUILD_CONFIG[self.config.build_config], target['name'])
-          else:
-            binary = 'vsprojects/%s%s/%s.exe' % (
-                'x64/' if self.args.arch == 'x64' else '',
-                _MSBUILD_CONFIG[self.config.build_config],
-                target['name'])
+          binary = 'cmake/build/%s/%s.exe' % (_MSBUILD_CONFIG[self.config.build_config], target['name'])
         else:
           if self._use_cmake:
             binary = 'cmake/build/%s' % target['name']
@@ -346,11 +350,12 @@ class CLanguage(object):
                                                 environ=env))
           else:
             cmdline = [binary] + target['args']
+            shortname = target.get('shortname', ' '.join(
+                          pipes.quote(arg)
+                          for arg in cmdline))
+            shortname += shortname_ext
             out.append(self.config.job_spec(cmdline,
-                                            shortname=' '.join(
-                                                          pipes.quote(arg)
-                                                          for arg in cmdline) +
-                                                      shortname_ext,
+                                            shortname=shortname,
                                             cpu_cost=cpu_cost,
                                             flaky=target.get('flaky', False),
                                             timeout_seconds=target.get('timeout_seconds', _DEFAULT_TIMEOUT_SECONDS) * timeout_scaling,
@@ -367,19 +372,17 @@ class CLanguage(object):
             'check_epollexclusive']
 
   def make_options(self):
-    return self._make_options;
+    return self._make_options
 
   def pre_build_steps(self):
-    if self._use_cmake:
-      if self.platform == 'windows':
-        return [['tools\\run_tests\\helper_scripts\\pre_build_cmake.bat']]
-      else:
-        return [['tools/run_tests/helper_scripts/pre_build_cmake.sh']]
+    if self.platform == 'windows':
+      return [['tools\\run_tests\\helper_scripts\\pre_build_cmake.bat',
+               self._cmake_generator_option,
+               self._cmake_arch_option]]
+    elif self._use_cmake:
+      return [['tools/run_tests/helper_scripts/pre_build_cmake.sh']]
     else:
-      if self.platform == 'windows':
-        return [['tools\\run_tests\\helper_scripts\\pre_build_c.bat']]
-      else:
-        return []
+      return []
 
   def build_steps(self):
     return []
@@ -531,6 +534,7 @@ class PhpLanguage(object):
     self.config = config
     self.args = args
     _check_compiler(self.args.compiler, ['default'])
+    self._make_options = ['EMBED_OPENSSL=true', 'EMBED_ZLIB=true']
 
   def test_specs(self):
     return [self.config.job_spec(['src/php/bin/run_tests.sh'],
@@ -543,7 +547,7 @@ class PhpLanguage(object):
     return ['static_c', 'shared_c']
 
   def make_options(self):
-    return []
+    return self._make_options;
 
   def build_steps(self):
     return [['tools/run_tests/helper_scripts/build_php.sh']]
@@ -567,6 +571,7 @@ class Php7Language(object):
     self.config = config
     self.args = args
     _check_compiler(self.args.compiler, ['default'])
+    self._make_options = ['EMBED_OPENSSL=true', 'EMBED_ZLIB=true']
 
   def test_specs(self):
     return [self.config.job_spec(['src/php/bin/run_tests.sh'],
@@ -579,7 +584,7 @@ class Php7Language(object):
     return ['static_c', 'shared_c']
 
   def make_options(self):
-    return []
+    return self._make_options;
 
   def build_steps(self):
     return [['tools/run_tests/helper_scripts/build_php.sh']]
@@ -1111,30 +1116,6 @@ def _check_arch_option(arch):
       sys.exit(1)
 
 
-def _windows_build_bat(compiler):
-  """Returns name of build.bat for selected compiler."""
-  # For CoreCLR, fall back to the default compiler for C core
-  if compiler == 'default' or compiler == 'vs2013':
-    return 'vsprojects\\build_vs2013.bat'
-  elif compiler == 'vs2015':
-    return 'vsprojects\\build_vs2015.bat'
-  else:
-    print('Compiler %s not supported.' % compiler)
-    sys.exit(1)
-
-
-def _windows_toolset_option(compiler):
-  """Returns msbuild PlatformToolset for selected compiler."""
-  # For CoreCLR, fall back to the default compiler for C core
-  if compiler == 'default' or compiler == 'vs2013' or compiler == 'coreclr':
-    return '/p:PlatformToolset=v120'
-  elif compiler == 'vs2015':
-    return '/p:PlatformToolset=v140'
-  else:
-    print('Compiler %s not supported.' % compiler)
-    sys.exit(1)
-
-
 def _docker_arch_suffix(arch):
   """Returns suffix to dockerfile dir to use."""
   if arch == 'default' or arch == 'x64':
@@ -1233,12 +1214,11 @@ argp.add_argument('--compiler',
                   choices=['default',
                            'gcc4.4', 'gcc4.6', 'gcc4.8', 'gcc4.9', 'gcc5.3', 'gcc_musl',
                            'clang3.4', 'clang3.5', 'clang3.6', 'clang3.7',
-                           'vs2013', 'vs2015',
                            'python2.7', 'python3.4', 'python3.5', 'python3.6', 'pypy', 'pypy3', 'python_alpine',
                            'node0.12', 'node4', 'node5', 'node6', 'node7', 'node8',
                            'electron1.3', 'electron1.6',
                            'coreclr',
-                           'cmake'],
+                           'cmake', 'cmake_vs2015', 'cmake_vs2017'],
                   default='default',
                   help='Selects compiler to use. Allowed values depend on the platform and language.')
 argp.add_argument('--iomgr_platform',
@@ -1283,9 +1263,12 @@ argp.add_argument('--disable_auto_set_flakes', default=False, const=True, action
 args = argp.parse_args()
 
 flaky_tests = set()
+shortname_to_cpu = {}
 if not args.disable_auto_set_flakes:
   try:
-    flaky_tests = set(get_flaky_tests())
+    for test in get_bqtest_data():
+      if test.flaky: flaky_tests.add(test.name)
+      if test.cpu > 0: shortname_to_cpu[test.name] = test.cpu
   except:
     print("Unexpected error getting flaky tests:", sys.exc_info()[0])
 
@@ -1397,27 +1380,11 @@ _check_arch_option(args.arch)
 
 def make_jobspec(cfg, targets, makefile='Makefile'):
   if platform_string() == 'windows':
-    if makefile.startswith('cmake/build/'):
-      return [jobset.JobSpec(['cmake', '--build', '.',
-                              '--target', '%s' % target,
-                              '--config', _MSBUILD_CONFIG[cfg]],
-                             cwd=os.path.dirname(makefile),
-                             timeout_seconds=None) for target in targets]
-    extra_args = []
-    # better do parallel compilation
-    # empirically /m:2 gives the best performance/price and should prevent
-    # overloading the windows workers.
-    extra_args.extend(['/m:2'])
-    # disable PDB generation: it's broken, and we don't need it during CI
-    extra_args.extend(['/p:Jenkins=true'])
-    return [
-      jobset.JobSpec([_windows_build_bat(args.compiler),
-                      'vsprojects\\%s.sln' % target,
-                      '/p:Configuration=%s' % _MSBUILD_CONFIG[cfg]] +
-                      extra_args +
-                      language_make_options,
-                      shell=True, timeout_seconds=None)
-      for target in targets]
+    return [jobset.JobSpec(['cmake', '--build', '.',
+                            '--target', '%s' % target,
+                            '--config', _MSBUILD_CONFIG[cfg]],
+                           cwd=os.path.dirname(makefile),
+                           timeout_seconds=None) for target in targets]
   else:
     if targets and makefile.startswith('cmake/build/'):
       # With cmake, we've passed all the build configuration in the pre-build step already
@@ -1561,7 +1528,7 @@ def _build_and_run(
     # When running on travis, we want out test runs to be as similar as possible
     # for reproducibility purposes.
     if args.travis and args.max_time <= 0:
-      massaged_one_run = sorted(one_run, key=lambda x: x.shortname)
+      massaged_one_run = sorted(one_run, key=lambda x: x.cpu_cost)
     else:
       # whereas otherwise, we want to shuffle things up to give all tests a
       # chance to run.
diff --git a/tools/run_tests/run_tests_matrix.py b/tools/run_tests/run_tests_matrix.py
index 04e2a70d28..2417c5ae55 100755
--- a/tools/run_tests/run_tests_matrix.py
+++ b/tools/run_tests/run_tests_matrix.py
@@ -29,9 +29,14 @@ from python_utils.filter_pull_request_tests import filter_tests
 _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
 os.chdir(_ROOT)
 
+_DEFAULT_RUNTESTS_TIMEOUT = 1*60*60
+
 # Set the timeout high to allow enough time for sanitizers and pre-building
 # clang docker.
-_RUNTESTS_TIMEOUT = 4*60*60
+_CPP_RUNTESTS_TIMEOUT = 4*60*60
+
+# C++ TSAN takes longer than other sanitizers
+_CPP_TSAN_RUNTESTS_TIMEOUT = 8*60*60
 
 # Number of jobs assigned to each run_tests.py instance
 _DEFAULT_INNER_JOBS = 2
@@ -51,8 +56,11 @@ def _report_filename_internal_ci(name):
 
 
 def _docker_jobspec(name, runtests_args=[], runtests_envs={},
-                    inner_jobs=_DEFAULT_INNER_JOBS):
+                    inner_jobs=_DEFAULT_INNER_JOBS,
+                    timeout_seconds=None):
   """Run a single instance of run_tests.py in a docker container"""
+  if not timeout_seconds:
+    timeout_seconds = _DEFAULT_RUNTESTS_TIMEOUT
   test_job = jobset.JobSpec(
           cmdline=['python', 'tools/run_tests/run_tests.py',
                    '--use_docker',
@@ -62,15 +70,18 @@ def _docker_jobspec(name, runtests_args=[], runtests_envs={},
                    '--report_suite_name', '%s' % name] + runtests_args,
           environ=runtests_envs,
           shortname='run_tests_%s' % name,
-          timeout_seconds=_RUNTESTS_TIMEOUT)
+          timeout_seconds=timeout_seconds)
   return test_job
 
 
 def _workspace_jobspec(name, runtests_args=[], workspace_name=None,
-                       runtests_envs={}, inner_jobs=_DEFAULT_INNER_JOBS):
+                       runtests_envs={}, inner_jobs=_DEFAULT_INNER_JOBS,
+                       timeout_seconds=None):
   """Run a single instance of run_tests.py in a separate workspace"""
   if not workspace_name:
     workspace_name = 'workspace_%s' % name
+  if not timeout_seconds:
+    timeout_seconds = _DEFAULT_RUNTESTS_TIMEOUT
   env = {'WORKSPACE_NAME': workspace_name}
   env.update(runtests_envs)
   test_job = jobset.JobSpec(
@@ -82,14 +93,15 @@ def _workspace_jobspec(name, runtests_args=[], workspace_name=None,
                    '--report_suite_name', '%s' % name] + runtests_args,
           environ=env,
           shortname='run_tests_%s' % name,
-          timeout_seconds=_RUNTESTS_TIMEOUT)
+          timeout_seconds=timeout_seconds)
   return test_job
 
 
 def _generate_jobs(languages, configs, platforms, iomgr_platform = 'native',
                   arch=None, compiler=None,
                   labels=[], extra_args=[], extra_envs={},
-                  inner_jobs=_DEFAULT_INNER_JOBS):
+                  inner_jobs=_DEFAULT_INNER_JOBS,
+                  timeout_seconds=None):
   result = []
   for language in languages:
     for platform in platforms:
@@ -110,10 +122,12 @@ def _generate_jobs(languages, configs, platforms, iomgr_platform = 'native',
         runtests_args += extra_args
         if platform == 'linux':
           job = _docker_jobspec(name=name, runtests_args=runtests_args,
-                                runtests_envs=extra_envs, inner_jobs=inner_jobs)
+                                runtests_envs=extra_envs, inner_jobs=inner_jobs,
+                                timeout_seconds=timeout_seconds)
         else:
           job = _workspace_jobspec(name=name, runtests_args=runtests_args,
-                                   runtests_envs=extra_envs, inner_jobs=inner_jobs)
+                                   runtests_envs=extra_envs, inner_jobs=inner_jobs,
+                                   timeout_seconds=timeout_seconds)
 
         job.labels = [platform, config, language, iomgr_platform] + labels
         result.append(job)
@@ -136,7 +150,8 @@ def _create_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS):
                              platforms=['linux', 'macos', 'windows'],
                              labels=['basictests', 'corelang'],
                              extra_args=extra_args,
-                             inner_jobs=inner_jobs)
+                             inner_jobs=inner_jobs,
+                             timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
   
   test_jobs += _generate_jobs(languages=['csharp', 'node', 'python'],
                              configs=['dbg', 'opt'],
@@ -151,7 +166,8 @@ def _create_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS):
                               platforms=['linux', 'macos'],
                               labels=['basictests', 'corelang'],
                               extra_args=extra_args,
-                              inner_jobs=inner_jobs)
+                              inner_jobs=inner_jobs,
+                              timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
   
   test_jobs += _generate_jobs(languages=['ruby', 'php'],
                               configs=['dbg', 'opt'],
@@ -174,13 +190,22 @@ def _create_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS):
                               platforms=['linux'],
                               labels=['sanitizers', 'corelang'],
                               extra_args=extra_args,
-                              inner_jobs=inner_jobs)
+                              inner_jobs=inner_jobs,
+                              timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
   test_jobs += _generate_jobs(languages=['c++'],
-                              configs=['asan', 'tsan'],
+                              configs=['asan'],
                               platforms=['linux'],
                               labels=['sanitizers', 'corelang'],
                               extra_args=extra_args,
-                              inner_jobs=inner_jobs)
+                              inner_jobs=inner_jobs,
+                              timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
+  test_jobs += _generate_jobs(languages=['c++'],
+                              configs=['tsan'],
+                              platforms=['linux'],
+                              labels=['sanitizers', 'corelang'],
+                              extra_args=extra_args,
+                              inner_jobs=inner_jobs,
+                              timeout_seconds=_CPP_TSAN_RUNTESTS_TIMEOUT)
 
   return test_jobs
 
@@ -207,41 +232,63 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                                 compiler=compiler,
                                 labels=['portability', 'corelang'],
                                 extra_args=extra_args,
-                                inner_jobs=inner_jobs)
-
-  # portability C on Windows
-  for arch in ['x86', 'x64']:
-    for compiler in ['vs2013', 'vs2015']:
-      test_jobs += _generate_jobs(languages=['c'],
-                                  configs=['dbg'],
-                                  platforms=['windows'],
-                                  arch=arch,
-                                  compiler=compiler,
-                                  labels=['portability', 'corelang'],
-                                  extra_args=extra_args,
-                                  inner_jobs=inner_jobs)
+                                inner_jobs=inner_jobs,
+                                timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
+
+  # portability C on Windows 64-bit (x86 is the default)
+  test_jobs += _generate_jobs(languages=['c'],
+                              configs=['dbg'],
+                              platforms=['windows'],
+                              arch='x64',
+                              compiler='default',
+                              labels=['portability', 'corelang'],
+                              extra_args=extra_args,
+                              inner_jobs=inner_jobs)
+
+  # portability C++ on Windows
+  # TODO(jtattermusch): some of the tests are failing, so we force --build_only
+  test_jobs += _generate_jobs(languages=['c++'],
+                              configs=['dbg'],
+                              platforms=['windows'],
+                              arch='default',
+                              compiler='default',
+                              labels=['portability', 'corelang'],
+                              extra_args=extra_args + ['--build_only'],
+                              inner_jobs=inner_jobs)
+
+  # portability C and C++ on Windows using VS2017 (build only)
+  # TODO(jtattermusch): some of the tests are failing, so we force --build_only
+  test_jobs += _generate_jobs(languages=['c', 'c++'],
+                              configs=['dbg'],
+                              platforms=['windows'],
+                              arch='x64',
+                              compiler='cmake_vs2017',
+                              labels=['portability', 'corelang'],
+                              extra_args=extra_args + ['--build_only'],
+                              inner_jobs=inner_jobs)
 
   # C and C++ with the c-ares DNS resolver on Linux
   test_jobs += _generate_jobs(languages=['c', 'c++'],
                               configs=['dbg'], platforms=['linux'],
                               labels=['portability', 'corelang'],
                               extra_args=extra_args,
-                              extra_envs={'GRPC_DNS_RESOLVER': 'ares'})
+                              extra_envs={'GRPC_DNS_RESOLVER': 'ares'},
+                              timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
 
   # TODO(zyc): Turn on this test after adding c-ares support on windows.
-  # C with the c-ares DNS resolver on Windonws
+  # C with the c-ares DNS resolver on Windows
   # test_jobs += _generate_jobs(languages=['c'],
   #                             configs=['dbg'], platforms=['windows'],
   #                             labels=['portability', 'corelang'],
   #                             extra_args=extra_args,
   #                             extra_envs={'GRPC_DNS_RESOLVER': 'ares'})
 
-  # cmake build for C and C++
+  # C and C++ build with cmake on Linux
   # TODO(jtattermusch): some of the tests are failing, so we force --build_only
   # to make sure it's buildable at least.
   test_jobs += _generate_jobs(languages=['c', 'c++'],
                               configs=['dbg'],
-                              platforms=['linux', 'windows'],
+                              platforms=['linux'],
                               arch='default',
                               compiler='cmake',
                               labels=['portability', 'corelang'],
@@ -272,7 +319,8 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                               iomgr_platform='uv',
                               labels=['portability', 'corelang'],
                               extra_args=extra_args,
-                              inner_jobs=inner_jobs)
+                              inner_jobs=inner_jobs,
+                              timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
 
   test_jobs += _generate_jobs(languages=['node'],
                               configs=['dbg'],
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index b0a0c3a8eb..7c934b1ba7 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -33,7 +33,7 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  ec44c6c1675c25b9827aacd08c02433cccde7780 third_party/googletest (release-1.8.0)
  80a37e0782d2d702d52234b62dd4b9ec74fd2c95 third_party/protobuf (v3.4.0)
  cacf7f1d4e3d44d871b605da3b647f07d718623f third_party/zlib (v1.2.11)
- 7691f773af79bf75a62d1863fd0f13ebf9dc51b1 third_party/cares/cares (1.12.0)
+ 3be1924221e1326df520f8498d704a5c4c8d0cce third_party/cares/cares (cares-1_13_0)
 EOF
 
 diff -u $submodules $want_submodules
diff --git a/tools/run_tests/sanity/sanity_tests.yaml b/tools/run_tests/sanity/sanity_tests.yaml
index 7e582bc40b..4bc4b7c56f 100644
--- a/tools/run_tests/sanity/sanity_tests.yaml
+++ b/tools/run_tests/sanity/sanity_tests.yaml
@@ -10,7 +10,6 @@
 - script: tools/buildgen/generate_projects.sh -j 3
   cpu_cost: 3
 - script: tools/distrib/check_copyright.py
-- script: tools/distrib/check_vsprojects.py
 - script: tools/distrib/clang_format_code.sh
 - script: tools/distrib/check_trailing_newlines.sh
 - script: tools/distrib/check_nanopb_output.sh
diff --git a/tools/ubsan_suppressions.txt b/tools/ubsan_suppressions.txt
index 2dcfeea9af..6ccc306cf0 100644
--- a/tools/ubsan_suppressions.txt
+++ b/tools/ubsan_suppressions.txt
@@ -5,6 +5,7 @@ nonnull-attribute:rsa_blinding_get
 nonnull-attribute:ssl_copy_key_material
 alignment:CRYPTO_cbc128_encrypt
 alignment:CRYPTO_gcm128_encrypt
+alignment:poly1305_block_copy
 nonnull-attribute:google::protobuf::*
 alignment:google::protobuf::*
 nonnull-attribute:_tr_stored_block
diff --git a/vsprojects/README.md b/vsprojects/README.md
index 4b6608ba93..ee32ecab9a 100644
--- a/vsprojects/README.md
+++ b/vsprojects/README.md
@@ -1,6 +1,6 @@
-# Pre-generated MS Visual Studio project & solution files
+# Pre-generated MS Visual Studio project & solution files: DELETED
 
-**DEPRECATED, please use cmake instead (it can generate Visual Studio projects for you). We will continue providing pre-generated VS projects for a while, but we will likely get rid of them entirely at some point.**
+**The pre-generated MS Visual Studio project & solution files are no longer available, please use cmake instead (it can generate Visual Studio projects for you).**
 
 **Pre-generated MS Visual Studio projects used to be the recommended way to build on Windows, but there were some limitations:**
 - **hard to build dependencies, expecially boringssl (deps usually support cmake quite well)**
@@ -8,54 +8,4 @@
 - **.proto codegen is hard to support in Visual Studio directly (but we have a pretty decent support in cmake)**
 - **It's a LOT of generated files. We prefer not to have too much generated code in our github repo.**
 
-Versions 2013 and 2015 are both supported. You can use [their respective
-community
-editions](https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx).
-
-# Building
-We are using [NuGet](http://www.nuget.org) to pull zlib and openssl dependencies.
-If you don't have Visual Studio NuGet plugin installed, you'll need to
-download nuget.exe from the web and manually restore the NuGet packages.
-
-```
-> REM Run from this directory.
-> REM No need to do this if you have NuGet visual studio extension.
-> nuget restore grpc.sln
-```
-
-After that, you can build the solution using one of these options:
-  1. open `grpc.sln` with Visual Studio and hit "Build".
-  2. build from commandline using `msbuild grpc.sln /p:Configuration=Debug`
-
-# C/C++ Test Dependencies
-   * gtest isn't available as a git repo like the other dependencies.  download it and add it to `/third_party/gtest/` (the folder will end up with `/build-aux/`, `/cmake/`, `/codegear/`, etc. folders in it).  
-    * if using vs2013: open/import the gtest solution in `/msvc/`, and save over the first solution (you will have to change it from read-only).  change all projects to use `/MDd` (Property Pages - C/C++ - Code Generation - Runtime Library) and build. This is a "multithreaded debug" setting and it needs to match grpc.
-    * build all
-   * open protobuf solution in `/third_party/protobuf/vsprojects`
-    * if using vs2013: on import the gtest stuff will probably fail, I think the paths are interpreted wrong.  it's ok.
-    * tests and test_plugin will fail when built.  also ok
-    * build all
-   *  gflags is automatically imported as a git submodule but it needs to have CMake run on it to be ready for a specific platform
-    * download [CMake](http://www.cmake.org/) windows installer; install
-    * open visual studio developer command prompt (not sure if dev command prompt is necessary)
-    * run `cmake <path to gtest directory>`
-    * this will build a `.sln` and fill up the `/third_party/gflags/include/gflags/` directory with headers
-    * build all
-   * install [NuGet](http://www.nuget.org)
-    * nuget should automatically bring in built versions of zlib and openssl when building grpc.sln (the versions in `/third_party/` are not used).  If it doesn't work use `tools->nuget...->manage...`.  The packages are put in `/vsprojects/packages/`
-
-# Building protoc plugins
-For generating service stub code, gRPC relies on plugins for `protoc` (the protocol buffer compiler). The solution `grpc_protoc_plugins.sln` allows you to build
-Windows .exe binaries of gRPC protoc plugins.
-
-- Follow instructions in `third_party\protobuf\cmake\README.md` to create Visual Studio 2013 projects for protobuf.
-  ```
-  $ cd third_party/protobuf/cmake
-  $ mkdir build & cd build
-  $ mkdir solution & cd solution
-  $ cmake -G "Visual Studio 12 2013" -Dprotobuf_BUILD_TESTS=OFF ../..
-  ```
-
-- Open solution `third_party\protobuf\cmake\build\solution\protobuf.sln` and build it in Release mode. That will build libraries `libprotobuf.lib` and `libprotoc.lib` needed for the next step.
-
-- Open solution `vsprojects\grpc_protoc_plugins.sln` and build it in Release mode. As a result, you should obtain a set of gRPC protoc plugin binaries (`grpc_cpp_plugin.exe`, `grpc_csharp_plugin.exe`, ...)
+See [INSTALL.md](/INSTALL.md) for detailed instructions how to build using cmake on Windows.
diff --git a/vsprojects/build_plugins.bat b/vsprojects/build_plugins.bat
deleted file mode 100644
index 85a3b78d4b..0000000000
--- a/vsprojects/build_plugins.bat
+++ /dev/null
@@ -1,37 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-@rem Convenience script to build gRPC protoc plugins from command line. protoc plugins are used to generate service stub code from .proto service defintions.
-
-setlocal
-
-@rem enter this directory
-cd /d %~dp0
-
-@rem Set VS variables (uses Visual Studio 2013)
-@call "%VS120COMNTOOLS%\..\..\vc\vcvarsall.bat" x86
-
-@rem Build third_party/protobuf
-msbuild ..\third_party\protobuf\cmake\build\solution\protobuf.sln /p:Configuration=Release || goto :error
-
-@rem Build the C# protoc plugins
-msbuild grpc_protoc_plugins.sln /p:Configuration=Release || goto :error
-
-endlocal
-
-goto :EOF
-
-:error
-echo Failed!
-exit /b %errorlevel%
diff --git a/vsprojects/build_vs2013.bat b/vsprojects/build_vs2013.bat
deleted file mode 100644
index 952b2095e8..0000000000
--- a/vsprojects/build_vs2013.bat
+++ /dev/null
@@ -1,24 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-@rem Convenience wrapper that runs specified gRPC target using msbuild
-@rem Usage: build_vs2013.bat TARGET_NAME
-
-setlocal
-@rem Set VS variables (uses Visual Studio 2013)
-@call "%VS120COMNTOOLS%\..\..\vc\vcvarsall.bat" x86
-
-msbuild %*
-exit /b %ERRORLEVEL%
-endlocal
diff --git a/vsprojects/build_vs2015.bat b/vsprojects/build_vs2015.bat
deleted file mode 100644
index 2e39df2b88..0000000000
--- a/vsprojects/build_vs2015.bat
+++ /dev/null
@@ -1,24 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-@rem Convenience wrapper that runs specified gRPC target using msbuild
-@rem Usage: build_vs2015.bat TARGET_NAME
-
-setlocal
-@rem Set VS variables (uses Visual Studio 2015)
-@call "%VS140COMNTOOLS%\..\..\vc\vcvarsall.bat" x86
-
-msbuild %*
-exit /b %ERRORLEVEL%
-endlocal
diff --git a/vsprojects/buildtests_c.sln b/vsprojects/buildtests_c.sln
deleted file mode 100644
index 5344d0a03f..0000000000
--- a/vsprojects/buildtests_c.sln
+++ /dev/null
@@ -1,4406 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2013
-VisualStudioVersion = 12.0.21005.1
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "alarm_test", "vcxproj\test\alarm_test\alarm_test.vcxproj", "{AFD362D7-0E2A-E700-1F27-9D90F76166DF}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "algorithm_test", "vcxproj\test\algorithm_test\algorithm_test.vcxproj", "{216FDCB2-9D93-0D86-F0F1-12E16312A191}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "alloc_test", "vcxproj\test\alloc_test\alloc_test.vcxproj", "{DD37D527-9DFF-1F53-B97F-50CF80AE0650}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "alpn_test", "vcxproj\test\alpn_test\alpn_test.vcxproj", "{5BAAE7EA-A972-DD80-F190-29B9E3110BB3}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "arena_test", "vcxproj\test\arena_test\arena_test.vcxproj", "{D85AC722-A88F-4280-F62E-672F571787FF}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bad_client_test", "vcxproj\test/bad_client\bad_client_test\bad_client_test.vcxproj", "{BA67B418-B699-E41A-9CC4-0279C49481A5}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "badreq_bad_client_test", "vcxproj\test\badreq_bad_client_test\badreq_bad_client_test.vcxproj", "{8A811C28-E04E-A444-E4C1-7588DF5B90AE}"
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bdp_estimator_test", "vcxproj\test\bdp_estimator_test\bdp_estimator_test.vcxproj", "{56314C05-7748-B7FD-F9DE-F975A0275427}"
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-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bin_decoder_test", "vcxproj\test\bin_decoder_test\bin_decoder_test.vcxproj", "{6BFAC6BA-3B9D-E8F5-BE35-91E8EFB9E25B}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bin_encoder_test", "vcxproj\test\bin_encoder_test\bin_encoder_test.vcxproj", "{D5C70922-D68E-0E9D-9988-995E0F9A79AE}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "byte_stream_test", "vcxproj\test\byte_stream_test\byte_stream_test.vcxproj", "{9AEDA345-E3E8-BFE9-11BF-64949EF41C9C}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "census_context_test", "vcxproj\test\census_context_test\census_context_test.vcxproj", "{5C1CFC2D-AF3C-D7CB-BA74-D267E91CBC73}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "census_intrusive_hash_map_test", "vcxproj\test\census_intrusive_hash_map_test\census_intrusive_hash_map_test.vcxproj", "{BD364959-BDBF-ABD2-C6D1-FC838EBEBB60}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "census_resource_test", "vcxproj\test\census_resource_test\census_resource_test.vcxproj", "{18CF99B5-3C61-EC3D-9509-3C95334C3B88}"
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "census_trace_context_test", "vcxproj\test\census_trace_context_test\census_trace_context_test.vcxproj", "{14511310-FAE4-C287-31DC-D6F456D10AF3}"
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-	EndProjectSection
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "channel_create_test", "vcxproj\test\channel_create_test\channel_create_test.vcxproj", "{AFC88484-3A2E-32BC-25B2-23DF741D4F3D}"
-	ProjectSection(myProperties) = preProject
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-	ProjectSection(ProjectDependencies) = postProject
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "check_epollexclusive", "vcxproj\.\check_epollexclusive\check_epollexclusive.vcxproj", "{03306445-5BA0-289C-02AB-513DE6C52124}"
-	ProjectSection(myProperties) = preProject
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "chttp2_hpack_encoder_test", "vcxproj\test\chttp2_hpack_encoder_test\chttp2_hpack_encoder_test.vcxproj", "{19F92966-3B0E-4FF8-CD7C-435D353E079E}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "chttp2_stream_map_test", "vcxproj\test\chttp2_stream_map_test\chttp2_stream_map_test.vcxproj", "{12F9C5F8-1BDA-305F-5A0B-B0F9CC7AA7A4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "chttp2_varint_test", "vcxproj\test\chttp2_varint_test\chttp2_varint_test.vcxproj", "{6B29F634-1277-74B8-47F6-78756190BA7B}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "combiner_test", "vcxproj\test\combiner_test\combiner_test.vcxproj", "{C237D1E4-8825-80BA-1FC3-5E147E53E96E}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "compression_test", "vcxproj\test\compression_test\compression_test.vcxproj", "{5AFE7D17-A4A7-D68E-4491-CBC852F9D2A0}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "concurrent_connectivity_test", "vcxproj\test\concurrent_connectivity_test\concurrent_connectivity_test.vcxproj", "{391B366C-D916-45AA-3FE5-67363A46193B}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
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-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "connection_prefix_bad_client_test", "vcxproj\test\connection_prefix_bad_client_test\connection_prefix_bad_client_test.vcxproj", "{AF9D0EB2-2A53-B815-3A63-E82C7F91DB29}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "connection_refused_test", "vcxproj\test\connection_refused_test\connection_refused_test.vcxproj", "{961DFABF-18F2-7D46-4D69-B82A5E9A78B2}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dns_resolver_connectivity_test", "vcxproj\test\dns_resolver_connectivity_test\dns_resolver_connectivity_test.vcxproj", "{F7B6FE68-E847-D7CA-4062-E737E542BCC3}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dns_resolver_test", "vcxproj\test\dns_resolver_test\dns_resolver_test.vcxproj", "{D06E10DC-272A-5203-7066-2698A247DF26}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "end2end_nosec_tests", "vcxproj\test/end2end/tests\end2end_nosec_tests\end2end_nosec_tests.vcxproj", "{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "end2end_tests", "vcxproj\test/end2end/tests\end2end_tests\end2end_tests.vcxproj", "{1F1F9084-2A93-B80E-364F-5754894AFAB4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "endpoint_pair_test", "vcxproj\test\endpoint_pair_test\endpoint_pair_test.vcxproj", "{37166D50-3AAA-1156-19F6-5901DFA55172}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "error_test", "vcxproj\test\error_test\error_test.vcxproj", "{42720233-A6D4-66BC-CCA2-06B57261D0B3}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fake_resolver_test", "vcxproj\test\fake_resolver_test\fake_resolver_test.vcxproj", "{2F59EB2E-CEF9-A291-9480-1F737C3E5E57}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fling_client", "vcxproj\test\fling_client\fling_client.vcxproj", "{0647D598-9611-F659-EA36-DF995C9F736B}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fling_server", "vcxproj\test\fling_server\fling_server.vcxproj", "{5D0E4E74-275C-61D1-0D82-46CD2AA0C0B9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_hpack_tables", "vcxproj\.\gen_hpack_tables\gen_hpack_tables.vcxproj", "{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_legal_metadata_characters", "vcxproj\.\gen_legal_metadata_characters\gen_legal_metadata_characters.vcxproj", "{A635DE99-B131-CA00-2D3B-8691D60B76C2}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_percent_encoding_tables", "vcxproj\.\gen_percent_encoding_tables\gen_percent_encoding_tables.vcxproj", "{95D6E277-5ED9-EBDB-3DB8-19C610D2C6F5}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr", "vcxproj\.\gpr\gpr.vcxproj", "{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_avl_test", "vcxproj\test\gpr_avl_test\gpr_avl_test.vcxproj", "{144D8CFF-2737-A18A-DCFD-01603533D63F}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_backoff_test", "vcxproj\test\gpr_backoff_test\gpr_backoff_test.vcxproj", "{889F570D-E046-BD52-9E4C-B4CD13DFE2DB}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_cmdline_test", "vcxproj\test\gpr_cmdline_test\gpr_cmdline_test.vcxproj", "{10668A5D-65CD-F530-22D0-747B395B4C26}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_cpu_test", "vcxproj\test\gpr_cpu_test\gpr_cpu_test.vcxproj", "{0CB6DF66-4346-CCD0-C94B-318321C46501}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_env_test", "vcxproj\test\gpr_env_test\gpr_env_test.vcxproj", "{07149650-E8AF-B3D8-9D5B-BC34DC909DB8}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_histogram_test", "vcxproj\test\gpr_histogram_test\gpr_histogram_test.vcxproj", "{EEBDE4C3-0130-5BD1-E85F-527B3E68FE11}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_host_port_test", "vcxproj\test\gpr_host_port_test\gpr_host_port_test.vcxproj", "{64728265-92F9-103E-6720-8935385458DF}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_log_test", "vcxproj\test\gpr_log_test\gpr_log_test.vcxproj", "{38797EE3-62CC-3CBF-18D5-009ED6DD0BEC}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_mpscq_test", "vcxproj\test\gpr_mpscq_test\gpr_mpscq_test.vcxproj", "{B3D7760B-8BEA-2EF6-F1D4-9F9020E166D6}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_spinlock_test", "vcxproj\test\gpr_spinlock_test\gpr_spinlock_test.vcxproj", "{D8EDE51A-CBB2-0362-D59B-09AA92A94F45}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_stack_lockfree_test", "vcxproj\test\gpr_stack_lockfree_test\gpr_stack_lockfree_test.vcxproj", "{AD06B5CD-8D5C-A365-C46B-3CF32237A4F7}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_string_test", "vcxproj\test\gpr_string_test\gpr_string_test.vcxproj", "{B453457D-8FBC-9C9F-A55E-C06FCE13B1F2}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_sync_test", "vcxproj\test\gpr_sync_test\gpr_sync_test.vcxproj", "{98B2F932-5D6D-9FF0-516F-43FD7E0E4F1A}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_test_util", "vcxproj\.\gpr_test_util\gpr_test_util.vcxproj", "{EAB0A629-17A9-44DB-B5FF-E91A721FE037}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_thd_test", "vcxproj\test\gpr_thd_test\gpr_thd_test.vcxproj", "{459B2FAC-5FC8-1F47-8053-66D46EA39A49}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_time_test", "vcxproj\test\gpr_time_test\gpr_time_test.vcxproj", "{9779680E-3218-1528-E922-605871A20C3F}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_tls_test", "vcxproj\test\gpr_tls_test\gpr_tls_test.vcxproj", "{F5B6D7FF-A762-CBC3-8CDC-83890EAEB2FE}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gpr_useful_test", "vcxproj\test\gpr_useful_test\gpr_useful_test.vcxproj", "{40B790A8-BB01-9F12-5309-C0BEA97C75BC}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc", "vcxproj\.\grpc\grpc.vcxproj", "{29D16885-7228-4C31-81ED-5F9187C7F2A9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_auth_context_test", "vcxproj\test\grpc_auth_context_test\grpc_auth_context_test.vcxproj", "{C65A4336-92D6-D6A0-EB86-E3AA425222D0}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_b64_test", "vcxproj\test\grpc_b64_test\grpc_b64_test.vcxproj", "{A19FD81D-DF19-B8A4-4A8A-6967217FEC85}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_byte_buffer_reader_test", "vcxproj\test\grpc_byte_buffer_reader_test\grpc_byte_buffer_reader_test.vcxproj", "{82124768-C986-6C10-8BCC-B255B7C84722}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_channel_args_test", "vcxproj\test\grpc_channel_args_test\grpc_channel_args_test.vcxproj", "{58FB566F-DCD5-3ECE-233E-C1FD13CA2185}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_channel_stack_test", "vcxproj\test\grpc_channel_stack_test\grpc_channel_stack_test.vcxproj", "{E3CEAFE1-8CE9-61F6-A720-E26662246B1F}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_completion_queue_test", "vcxproj\test\grpc_completion_queue_test\grpc_completion_queue_test.vcxproj", "{16CDF507-EB91-D76C-F0A7-A914ABFD8C17}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_completion_queue_threading_test", "vcxproj\test\grpc_completion_queue_threading_test\grpc_completion_queue_threading_test.vcxproj", "{E6C389BC-0B47-D692-9BCD-758604CFC45B}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_create_jwt", "vcxproj\.\grpc_create_jwt\grpc_create_jwt.vcxproj", "{77971F8D-F583-3E77-0E3C-6C1FB6B1749C}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_credentials_test", "vcxproj\test\grpc_credentials_test\grpc_credentials_test.vcxproj", "{8305CC95-25CD-E15F-EA1A-11626FCF5AF9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_fetch_oauth2", "vcxproj\test\grpc_fetch_oauth2\grpc_fetch_oauth2.vcxproj", "{43722E98-54EC-5058-3DAC-327F45964971}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_invalid_channel_args_test", "vcxproj\test\grpc_invalid_channel_args_test\grpc_invalid_channel_args_test.vcxproj", "{B50FD4F7-5628-9BEC-81B9-EB79A0A45577}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_jwt_verifier_test", "vcxproj\test\grpc_jwt_verifier_test\grpc_jwt_verifier_test.vcxproj", "{60B5E7EE-7D9E-1F27-BD9F-2F5D44BC6751}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_print_google_default_creds_token", "vcxproj\.\grpc_print_google_default_creds_token\grpc_print_google_default_creds_token.vcxproj", "{C002965C-8457-CCE5-B1BA-E748FF9A11B6}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_security_connector_test", "vcxproj\test\grpc_security_connector_test\grpc_security_connector_test.vcxproj", "{74DCFC52-3C79-66BC-3DB0-B6A90D81BB68}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_test_util", "vcxproj\.\grpc_test_util\grpc_test_util.vcxproj", "{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_test_util_unsecure", "vcxproj\.\grpc_test_util_unsecure\grpc_test_util_unsecure.vcxproj", "{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_unsecure", "vcxproj\.\grpc_unsecure\grpc_unsecure.vcxproj", "{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}"
-	ProjectSection(myProperties) = preProject
-        	lib = "True"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc_verify_jwt", "vcxproj\.\grpc_verify_jwt\grpc_verify_jwt.vcxproj", "{02FAC25F-5FF6-34A0-00AE-B82BFBA851A9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_census_nosec_test", "vcxproj\test/end2end/fixtures\h2_census_nosec_test\h2_census_nosec_test.vcxproj", "{A8039D43-910E-4248-2A22-74366E8C4DCD}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED} = {47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_full+workarounds_nosec_test", "vcxproj\test/end2end/fixtures\h2_full+workarounds_nosec_test\h2_full+workarounds_nosec_test.vcxproj", "{77F11A97-AECB-10F5-50E8-1482F658A2D3}"
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
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-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_full_nosec_test", "vcxproj\test/end2end/fixtures\h2_full_nosec_test\h2_full_nosec_test.vcxproj", "{345EA50E-BCD4-DAC7-E1C8-DDA6291B75E2}"
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_full_test", "vcxproj\test/end2end/fixtures\h2_full_test\h2_full_test.vcxproj", "{EEBEFA75-C625-C823-FE96-9AD64887B57D}"
-	ProjectSection(myProperties) = preProject
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_http_proxy_nosec_test", "vcxproj\test/end2end/fixtures\h2_http_proxy_nosec_test\h2_http_proxy_nosec_test.vcxproj", "{58EA8DAE-6E50-45A3-0CCC-5165D824380E}"
-	ProjectSection(myProperties) = preProject
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_http_proxy_test", "vcxproj\test/end2end/fixtures\h2_http_proxy_test\h2_http_proxy_test.vcxproj", "{C9076E5F-7297-67C2-F786-3CC4F26D8F8A}"
-	ProjectSection(myProperties) = preProject
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_load_reporting_nosec_test", "vcxproj\test/end2end/fixtures\h2_load_reporting_nosec_test\h2_load_reporting_nosec_test.vcxproj", "{4B9EBBAE-D838-EC09-0B10-2D4520FBC0FF}"
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-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_load_reporting_test", "vcxproj\test/end2end/fixtures\h2_load_reporting_test\h2_load_reporting_test.vcxproj", "{F0A06723-2E3E-FE97-34B7-A2BA26D98B83}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_oauth2_test", "vcxproj\test/end2end/fixtures\h2_oauth2_test\h2_oauth2_test.vcxproj", "{0F761FF3-342A-C429-711F-F76181BAA52D}"
-	ProjectSection(myProperties) = preProject
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-	EndProjectSection
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-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_proxy_nosec_test", "vcxproj\test/end2end/fixtures\h2_proxy_nosec_test\h2_proxy_nosec_test.vcxproj", "{6EC72045-98CB-8A8D-9788-BC94209E23C8}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{47C2CB41-4E9F-58B6-F606-F6FAED5D00ED} = {47C2CB41-4E9F-58B6-F606-F6FAED5D00ED}
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "h2_proxy_test", "vcxproj\test/end2end/fixtures\h2_proxy_test\h2_proxy_test.vcxproj", "{5753B14F-0C69-2E56-6264-5541B2DCDF67}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
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-		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "hpack_table_test", "vcxproj\test\hpack_table_test\hpack_table_test.vcxproj", "{FF2CEE6D-850F-E22C-53A0-8C5912B14B20}"
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
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-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "inproc_nosec_test", "vcxproj\test/end2end/fixtures\inproc_nosec_test\inproc_nosec_test.vcxproj", "{D0D0CAE5-3D8C-390E-0F2F-58312AEADC32}"
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-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "inproc_test", "vcxproj\test/end2end/fixtures\inproc_test\inproc_test.vcxproj", "{59BB50B7-2E76-5EAA-781E-53228520635D}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{1F1F9084-2A93-B80E-364F-5754894AFAB4} = {1F1F9084-2A93-B80E-364F-5754894AFAB4}
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "invalid_call_argument_test", "vcxproj\test\invalid_call_argument_test\invalid_call_argument_test.vcxproj", "{C32CA8A3-58E6-8EB9-B72F-C295547D36A6}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "json_rewrite", "vcxproj\test\json_rewrite\json_rewrite.vcxproj", "{57B36FF6-25B1-2475-D07A-2E9097E2C792}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "json_rewrite_test", "vcxproj\test\json_rewrite_test\json_rewrite_test.vcxproj", "{DD4C2B4E-9C47-6AA4-8E16-7B69AF8FA1D2}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "json_stream_error_test", "vcxproj\test\json_stream_error_test\json_stream_error_test.vcxproj", "{8EABFC7E-4CE6-CDE1-CE31-298D809B8A9B}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "json_test", "vcxproj\test\json_test\json_test.vcxproj", "{05230AC7-4529-E6CF-0506-A063B5FF6642}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lame_client_test", "vcxproj\test\lame_client_test\lame_client_test.vcxproj", "{6E60B394-E17D-658A-6648-A2E6E183226F}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "large_metadata_bad_client_test", "vcxproj\test\large_metadata_bad_client_test\large_metadata_bad_client_test.vcxproj", "{B706A9EC-7982-0DBC-495D-07B165F6CF56}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{BA67B418-B699-E41A-9CC4-0279C49481A5} = {BA67B418-B699-E41A-9CC4-0279C49481A5}
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lb_policies_test", "vcxproj\test\lb_policies_test\lb_policies_test.vcxproj", "{62D58A08-3B5E-D6A8-ABBB-77995AA0A8C6}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "load_file_test", "vcxproj\test\load_file_test\load_file_test.vcxproj", "{DC76C089-0D55-DF19-7CCA-49DAE5D29E49}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "memory_profile_client", "vcxproj\test\memory_profile_client\memory_profile_client.vcxproj", "{98C01DBE-EFFE-6988-0762-829DC88F0EB4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "memory_profile_server", "vcxproj\test\memory_profile_server\memory_profile_server.vcxproj", "{7430B8AF-2A0E-EDF4-FD53-C8004DEE39EC}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "message_compress_test", "vcxproj\test\message_compress_test\message_compress_test.vcxproj", "{07170557-CCB0-D23C-8018-C2909D115DF9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minimal_stack_is_minimal_test", "vcxproj\test\minimal_stack_is_minimal_test\minimal_stack_is_minimal_test.vcxproj", "{68A54124-DFA3-4FF3-081F-70356222C977}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "mlog_test", "vcxproj\test\mlog_test\mlog_test.vcxproj", "{9345E329-80F3-DED4-FDC3-BF63FCEA2C03}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "multiple_server_queues_test", "vcxproj\test\multiple_server_queues_test\multiple_server_queues_test.vcxproj", "{88AF688E-E43C-5E20-6966-CF559F597D82}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "murmur_hash_test", "vcxproj\test\murmur_hash_test\murmur_hash_test.vcxproj", "{0B136077-8522-3C25-7704-1C386C9FDCD5}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "no_server_test", "vcxproj\test\no_server_test\no_server_test.vcxproj", "{A66AC548-E2B9-74CD-293C-43526EE51DCE}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "num_external_connectivity_watchers_test", "vcxproj\test\num_external_connectivity_watchers_test\num_external_connectivity_watchers_test.vcxproj", "{4E856E4A-7497-1B1A-1AED-D4C01E5D873A}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "parse_address_test", "vcxproj\test\parse_address_test\parse_address_test.vcxproj", "{EDEA8257-AEA8-1B0A-F95B-8D6CD7286463}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "percent_encoding_test", "vcxproj\test\percent_encoding_test\percent_encoding_test.vcxproj", "{CCFC6A58-623D-9013-BFEB-C809809E2429}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "resolve_address_test", "vcxproj\test\resolve_address_test\resolve_address_test.vcxproj", "{8279AF6C-9584-67F3-1547-B204864FCCA7}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "resource_quota_test", "vcxproj\test\resource_quota_test\resource_quota_test.vcxproj", "{6084F546-5D66-5CB5-63CF-DC960F14B545}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "secure_channel_create_test", "vcxproj\test\secure_channel_create_test\secure_channel_create_test.vcxproj", "{62B25398-7173-928E-689E-53860B0ACFC4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "secure_endpoint_test", "vcxproj\test\secure_endpoint_test\secure_endpoint_test.vcxproj", "{A7747106-A6BC-62D4-2A21-04A4F0CC2683}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sequential_connectivity_test", "vcxproj\test\sequential_connectivity_test\sequential_connectivity_test.vcxproj", "{F164F666-C866-D607-E1DF-E7BF3CF98255}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server_chttp2_test", "vcxproj\test\server_chttp2_test\server_chttp2_test.vcxproj", "{BF9F909B-8266-6AAC-A81B-05F8210AA8CA}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server_registered_method_bad_client_test", "vcxproj\test\server_registered_method_bad_client_test\server_registered_method_bad_client_test.vcxproj", "{B4E7CD82-988A-BD3A-29F8-8590D3A8BC28}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{BA67B418-B699-E41A-9CC4-0279C49481A5} = {BA67B418-B699-E41A-9CC4-0279C49481A5}
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "server_test", "vcxproj\test\server_test\server_test.vcxproj", "{E765AC67-E4E5-C350-59A1-C6CA2BD9F64B}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "simple_request_bad_client_test", "vcxproj\test\simple_request_bad_client_test\simple_request_bad_client_test.vcxproj", "{63422647-93FA-46BB-4827-95473D9D503C}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{BA67B418-B699-E41A-9CC4-0279C49481A5} = {BA67B418-B699-E41A-9CC4-0279C49481A5}
-		{0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF} = {0A7E7F92-FDEA-40F1-A9EC-3BA484F98BBF}
-		{46CEDFFF-9692-456A-AA24-38B5D6BCF4C5} = {46CEDFFF-9692-456A-AA24-38B5D6BCF4C5}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_buffer_test", "vcxproj\test\slice_buffer_test\slice_buffer_test.vcxproj", "{F0FA4A41-5695-580A-DCDA-EC719CB041B0}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_hash_table_test", "vcxproj\test\slice_hash_table_test\slice_hash_table_test.vcxproj", "{B3BC3481-FCD3-BA52-C975-E65CDB1CE9A9}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_string_helpers_test", "vcxproj\test\slice_string_helpers_test\slice_string_helpers_test.vcxproj", "{419167BB-C3F5-DDEA-403A-394D1902DE65}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "slice_test", "vcxproj\test\slice_test\slice_test.vcxproj", "{D6DC2CF8-F263-49B1-DE13-D44D94BCF337}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sockaddr_resolver_test", "vcxproj\test\sockaddr_resolver_test\sockaddr_resolver_test.vcxproj", "{9889A80C-F1D7-99C9-FE7E-657724BEDC62}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sockaddr_utils_test", "vcxproj\test\sockaddr_utils_test\sockaddr_utils_test.vcxproj", "{529771F0-10B0-9B1A-1E7E-8A8E01870348}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "status_conversion_test", "vcxproj\test\status_conversion_test\status_conversion_test.vcxproj", "{21E2A241-9D48-02CD-92E4-4EEC98424CF5}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "stream_compression_test", "vcxproj\test\stream_compression_test\stream_compression_test.vcxproj", "{A5EE72A2-656C-0896-12F3-A92583CF7C61}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "stream_owned_slice_test", "vcxproj\test\stream_owned_slice_test\stream_owned_slice_test.vcxproj", "{D5A20C05-D9B2-970B-8429-94BC3F58D1C4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "tcp_client_uv_test", "vcxproj\test\tcp_client_uv_test\tcp_client_uv_test.vcxproj", "{9814D850-F3BB-8C7A-4C78-2751C1E272F4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
-		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
-		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "tcp_server_uv_test", "vcxproj\test\tcp_server_uv_test\tcp_server_uv_test.vcxproj", "{676FA8B1-4800-6F02-1E1D-30517FD9C7F4}"
-	ProjectSection(myProperties) = preProject
-        	lib = "False"
-	EndProjectSection
-	ProjectSection(ProjectDependencies) = postProject
-		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
-		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
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-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Release|x64.Build.0 = Release|x64
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Debug-DLL|x64.Build.0 = Debug|x64
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Release-DLL|Win32.Build.0 = Release|Win32
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Release-DLL|x64.ActiveCfg = Release|x64
-		{9E0A2239-20D5-DB2D-CA0D-69F24E3416E7}.Release-DLL|x64.Build.0 = Release|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug|Win32.ActiveCfg = Debug|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug|x64.ActiveCfg = Debug|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release|Win32.ActiveCfg = Release|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release|x64.ActiveCfg = Release|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug|Win32.Build.0 = Debug|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug|x64.Build.0 = Debug|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release|Win32.Build.0 = Release|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release|x64.Build.0 = Release|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Debug-DLL|x64.Build.0 = Debug|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release-DLL|Win32.Build.0 = Release|Win32
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release-DLL|x64.ActiveCfg = Release|x64
-		{E35C24A0-8725-E773-FE78-CC0C67071EF7}.Release-DLL|x64.Build.0 = Release|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug|Win32.ActiveCfg = Debug|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug|x64.ActiveCfg = Debug|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release|Win32.ActiveCfg = Release|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release|x64.ActiveCfg = Release|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug|Win32.Build.0 = Debug|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug|x64.Build.0 = Debug|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release|Win32.Build.0 = Release|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release|x64.Build.0 = Release|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug-DLL|Win32.Build.0 = Debug|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug-DLL|x64.ActiveCfg = Debug|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Debug-DLL|x64.Build.0 = Debug|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release-DLL|Win32.ActiveCfg = Release|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release-DLL|Win32.Build.0 = Release|Win32
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release-DLL|x64.ActiveCfg = Release|x64
-		{658D7F7F-9628-6545-743C-D949301DC5DC}.Release-DLL|x64.Build.0 = Release|x64
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
-
diff --git a/vsprojects/coapp/openssl/.gitignore b/vsprojects/coapp/openssl/.gitignore
deleted file mode 100644
index 1482603721..0000000000
--- a/vsprojects/coapp/openssl/.gitignore
+++ /dev/null
@@ -1,10 +0,0 @@
-*.nupkg
-*.def
-/nuget.exe
-/packages
-/Debug
-/Release
-/output
-/x64
-/dest
-
diff --git a/vsprojects/coapp/openssl/README.md b/vsprojects/coapp/openssl/README.md
deleted file mode 100644
index a0a4deaa86..0000000000
--- a/vsprojects/coapp/openssl/README.md
+++ /dev/null
@@ -1,38 +0,0 @@
-OpenSSL Native Nuget package
--------------------------
-
-Uses [CoApp](http://coapp.org/) project to build the zlib package.
-
-Prerequisites
--------------
-Multiple versions of VS installed to be able to build all the targets:
-* Visual Studio 2015
-* Visual Studio 2013
-* Visual Studio 2010 (you might need SP1 to prevent LNK1123 error)
-
-ActivePerl
-
-CoApp toolkit: http://downloads.coapp.org/files/CoApp.Tools.Powershell.msi
-
-More details on installation: http://coapp.org/tutorials/installation.html
-
-Building
---------
-
-Build all flavors of openssl library using the provided batch file.
-```
-buildall.bat
-```
-
-Then, create NuGet package using powershell (you'll need the CoApp toolkit installed):
-```
-[THIS_DIRECTORY]> Write-NuGetPackage grpc.dependencies.openssl.autopkg
-```
-
-This will create three NuGet packages:
-* the main dev package
-* the redistributable package that contains just the binaries and no headers
-* the symbols package (debug symbols)
-
-Later, you can push the package to NuGet.org repo.
-Attention: before pusing the resulting nuget package to public nuget repo, you have to be 100% sure it works correctly - there’s no way how to delete or update an already existing package.
\ No newline at end of file
diff --git a/vsprojects/coapp/openssl/buildall.bat b/vsprojects/coapp/openssl/buildall.bat
deleted file mode 100644
index b020fb708e..0000000000
--- a/vsprojects/coapp/openssl/buildall.bat
+++ /dev/null
@@ -1,84 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-rem Restore using NuGet dependencies (Download NuGet from nuget.org and put it in this directory first)
-nuget restore  || goto eof:
-
-
-setlocal
-rem First do a bit of hacking to make sure we have headers ready in openssl's inc32 directory
-cd ..\..\..\third_party\openssl
-call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86
-perl Configure no-asm VC-WIN32 || goto :eof
-perl util\mkfiles.pl >MINFO || goto :eof
-perl util\mk1mf.pl no-asm VC-WIN32 >ms\nt.mak || goto :eof
-mkdir inc32\openssl
-mkdir tmp32
-nmake -f ms\nt.mak headers || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
-call :build x64 Release v140 || goto :eof
-call :build x64 Debug v140 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v140 || goto :eof
-call :build Win32 Debug v140 || goto :eof
-endlocal
-	
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" amd64
-call :build x64 Release v120 || goto :eof
-call :build x64 Debug v120 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v120 || goto :eof
-call :build Win32 Debug v120 || goto :eof
-endlocal
-
-rem setlocal
-rem call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" amd64
-rem call :build x64 Release v110 || goto :eof
-rem call :build x64 Debug v110 || goto :eof
-rem endlocal
-
-rem setlocal
-rem call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" x86
-rem call :build Win32 Release v110 || goto :eof
-rem call :build Win32 Debug v110 || goto :eof
-rem endlocal
-
-rem setlocal
-rem call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" amd64
-rem call :build x64 Release v100 || goto :eof
-rem call :build x64 Debug v100 || goto :eof
-rem endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v100 || goto :eof
-call :build Win32 Debug v100 || goto :eof
-endlocal
-
-:build
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=dynamic /P:ConfigurationType=DynamicLibrary .\openssl.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=static /P:ConfigurationType=StaticLibrary .\openssl.sln || goto :eof
-goto :eof
-
-
diff --git a/vsprojects/coapp/openssl/grpc.dependencies.openssl.autopkg b/vsprojects/coapp/openssl/grpc.dependencies.openssl.autopkg
deleted file mode 100644
index 1f4762d155..0000000000
--- a/vsprojects/coapp/openssl/grpc.dependencies.openssl.autopkg
+++ /dev/null
@@ -1,110 +0,0 @@
-@import @"version.inc";
-
-configurations
-{
-    // See https://github.com/coapp/coapp.powershell/issues/112
-    Toolset
-    {
-        key : "PlatformToolset"; // this is CoApp pre-defined key
-        choices: { v140, v120, v110, v100 };
-    };
-}
-
-#define { 
-      package-id = "grpc.dependencies.openssl";
-}
-
-nuget {
-	// the nuspec file metadata. Gets created/updated on build
-	nuspec {
-		id = ${package-id};
-		version : ${package-version};
-		title: gRPC Native Dependency: OpenSSL;
-		authors: {Mark J. Cox, Ralf S. Engelschall, Dr. Stephen Henson, Ben Laurie, Garrett Serack, Tim Rogers};
-		owners: {Jan Tattermusch};
-		licenseUrl: "http://www.openssl.org/source/license.html";
-		projectUrl: "http://github.com/grpc/grpc";
-		iconUrl: "http://openssl.com/images/openssl-logo.png";
-		requireLicenseAcceptance:false;
-		summary: "An OpenSSL library";
-		description: @"Native OpenSSL library.
-	OpenSSL homepage:  http://www.openssl.org";
-		releaseNotes: "Release of OpenSSL 1.0.2d libraries.";
-		copyright: Copyright 2015;
-		tags: { openssl, native, CoApp };
-
-	};
-
-    dependencies {
-        packages : {
-            grpc.dependencies.zlib/1.2.8.10
-        };
-    }
-    
-	// the files that go into the content folders
-	// (inserted into the nuspec file)
-	files {
-	
-	    // .targets file that are applied when redist package is installed from a managed project.
-		managed_build: {
-		  #output {
-              package = redist;
-          };
-		  #destination = "\build\portable-net45+netcore45+wpa81+wp8";
-		  "managed_targets\${package-id}.redist.targets";
-		};
-		
-		nestedInclude: {
-			#destination = "${d_include}\openssl";
-			#excludes : { ..\..\..\third_party\openssl\inc32\openssl\opensslconf.h };
-			"..\..\..\third_party\openssl\inc32\openssl\*";
-		};
-	
-		// TODO(jtattermusch): Visual Studio 2010 and 2012 Express (v100 and v110 toolsets) don't support x64,
-        // so while generating the package, you will get a warning that corresponding files are missing
-		// (and the resulting package will be somewhat incomplete).
-		("v100,v120,v140", "Win32,x64", "release,debug", "Dynamic,Static") => {
-			[${0},${1},${2},${3}] {
-				lib:         { .\output\${0}\${1}\${2}\${3}\libeay32.lib;
-				               .\output\${0}\${1}\${2}\${3}\ssleay32.lib };
-				
-				source: {
-							#destination = ${d_src}\openssl;
-							.\output\${0}\${1}\${2}\${3}\include\openssl\opensslconf.h
-				};
-			};
-		};
-		("v100,v120,v140", "Win32,x64", "release,debug", "Dynamic") => {
-			[${0},${1},${2},${3}] {
-				bin:     { .\output\${0}\${1}\${2}\${3}\libeay32.dll;
-                           .\output\${0}\${1}\${2}\${3}\ssleay32.dll };
-				symbols: { .\output\${0}\${1}\${2}\${3}\libeay32.pdb;
-                           .\output\${0}\${1}\${2}\${3}\ssleay32.pdb };
-			};
-		};
-		
-	};
-	
-	// the VC++ .props file that gets generated and inserted into the ${d_content} folder
-	props { 
-        PropertyGroup {
-            CallingConvention-zlib = cdecl;
-        }
-        
-	};
-
-	// the VC++ .targets file that gets generated and inserted into the ${d_content} folder
-	targets {
-		// every configuration needs to reference the include directories.
-		Includes += ${pkg_root}${d_include};
-		// Defines += HAS_ZLIB;
-		
-        ("v100,v110,v120,v140", "Win32,x64", "release,debug", "Dynamic,Static") => {
-			[${0},${1},${2},${3}] {
-                Includes += ${pkg_root}${d_include};
-            };
-        };
-        
-	};
-}
-
diff --git a/vsprojects/coapp/openssl/libeay32.vcxproj b/vsprojects/coapp/openssl/libeay32.vcxproj
deleted file mode 100644
index 46ddbde618..0000000000
--- a/vsprojects/coapp/openssl/libeay32.vcxproj
+++ /dev/null
@@ -1,828 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup>
-    <OpenSslPath>..\..\..\third_party\openssl</OpenSslPath>
-  </PropertyGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{BE42CA67-7C48-4882-BE59-111CB41142BE}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>$(LibName)</RootNamespace>
-    <RestorePackages>true</RestorePackages>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="ConfigurationSettings">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <PlatformToolset>v110</PlatformToolset>
-    <CallingConvention>Cdecl</CallingConvention>
-    <NoASM>true</NoASM>
-    <OutputPath>output\$(PlatformToolset)\$(Platform)\$(Configuration)\$(UsesConfigurationType)\</OutputPath>
-    <OutDir>$(OutputPath)</OutDir>
-  </PropertyGroup>
-  <Import Project="$(CoAppEtcDirectory)vcxproj.inc" Condition="Exists('$(CoAppEtcDirectory)vcxproj.inc')" />
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.props')" Project=".\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.props" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.props')" Project=".\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.props" />
-  <ImportGroup Label="ExtensionSettings" />
-  <ImportGroup Label="PropertySheets">
-    <Import Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup>
-    <LinkIncremental Condition="'$(Configuration)'=='Release'">false</LinkIncremental>
-    <LinkIncremental Condition="'$(Configuration)'=='Debug'">true</LinkIncremental>
-    <CallingConvention-zlib>$(CallingConvention)</CallingConvention-zlib>
-    <Linkage-zlib>$(UsesConfigurationType)</Linkage-zlib>
-  </PropertyGroup>
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <AdditionalIncludeDirectories>$(OpenSslPath);$(OpenSslPath)\inc32;$(OpenSslPath)\crypto;$(OpenSslPath)\crypto\asn1;$(OpenSslPath)\crypto\evp;$(OpenSslPath)\crypto\md2;$(OpenSslPath)\crypto\modes;$(OpenSslPath)\crypto\store;$(OpenSslPath)\include;$(OutDir);$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <BufferSecurityCheck>true</BufferSecurityCheck>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;L_ENDIAN;MK1MF_BUILD;WIN32_LEAN_AND_MEAN;OPENSSL_THREADS;ZLIB;OPENSSL_SYSNAME_WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_BUILD_SHLIBCRYPTO;OPENSSL_NO_IDEA;OPENSSL_NO_RC5;OPENSSL_NO_MD2;OPENSSL_NO_KRB5;OPENSSL_NO_JPAKE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>DSO_WIN32;UNICODE;_UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='DynamicLibrary'">_WINDLL;_REENTRANT;OPENSSL_NO_STATIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='StaticLibrary'">OPENSSL_NO_DYNAMIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(Linkage-zlib)'=='dynamic'">ZLIB_SHARED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(NoASM)'=='true'">OPENSSL_NO_ASM;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <CallingConvention>%(CallingConvention)</CallingConvention>
-      <StringPooling>true</StringPooling>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <TreatWarningAsError>false</TreatWarningAsError>
-      <WarningLevel>Level3</WarningLevel>
-    </ClCompile>
-    <Lib>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <IgnoreSpecificDefaultLibraries>zlib$(OutNameSuffix).lib;%(IgnoreSpecificDefaultLibraries)</IgnoreSpecificDefaultLibraries>
-    </Lib>
-    <Link>
-      <AllowIsolation>true</AllowIsolation>
-      <DataExecutionPrevention>true</DataExecutionPrevention>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <RandomizedBaseAddress>true</RandomizedBaseAddress>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <AdditionalDependencies>ws2_32.lib;crypt32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <ModuleDefinitionFile>.\libeay32.def</ModuleDefinitionFile>
-    </Link>
-    <ResourceCompile>
-      <AdditionalIncludeDirectories>$(OpenSslPath);$(OpenSslPath)\inc32;$(OpenSslPath)\crypto;$(OpenSslPath)\crypto\asn1;$(OpenSslPath)\crypto\evp;$(OpenSslPath)\crypto\md2;$(OpenSslPath)\crypto\modes;$(OpenSslPath)\crypto\store;$(OpenSslPath)\include;$(OutDir);$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;L_ENDIAN;MK1MF_BUILD;WIN32_LEAN_AND_MEAN;OPENSSL_THREADS;ZLIB;OPENSSL_SYSNAME_WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_BUILD_SHLIBCRYPTO;OPENSSL_NO_IDEA;OPENSSL_NO_RC5;OPENSSL_NO_MD2;OPENSSL_NO_KRB5;OPENSSL_NO_JPAKE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>DSO_WIN32;UNICODE;_UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='DynamicLibrary'">_WINDLL;_REENTRANT;OPENSSL_NO_STATIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='StaticLibrary'">OPENSSL_NO_DYNAMIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(Linkage-zlib)'=='dynamic'">ZLIB_SHARED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_NO_ASM;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>CRYPTO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
-    <ClCompile>
-      <AdditionalOptions>/Gs0 %(AdditionalOptions)</AdditionalOptions>
-      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
-      <ExceptionHandling>Sync</ExceptionHandling>
-      <MinimalRebuild>false</MinimalRebuild>
-      <OmitFramePointers>false</OmitFramePointers>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>DEBUG;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
-    <ResourceCompile>
-      <PreprocessorDefinitions>DEBUG;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
-    <ClCompile>
-      <AdditionalOptions>/MP %(AdditionalOptions)</AdditionalOptions>
-      <ExceptionHandling>false</ExceptionHandling>
-      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <OmitFramePointers>true</OmitFramePointers>
-      <Optimization>Full</Optimization>
-      <RuntimeTypeInfo>false</RuntimeTypeInfo>
-      <WholeProgramOptimization>true</WholeProgramOptimization>
-    </ClCompile>
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-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Project=".\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" />
-  <ImportGroup Label="ExtensionTargets" />
-  <PropertyGroup>
-    <Build-Perl-zlib Condition="'$(Linkage-zlib)'=='dynamic'">zlib-dynamic</Build-Perl-zlib>
-    <Build-Perl-zlib Condition="'$(Linkage-zlib)'=='static'">zlib</Build-Perl-zlib>
-    <Build-Perl-asm Condition="'$(NoASM)'=='true'">no-asm</Build-Perl-asm>
-    <Build-Perl-asm Condition="'$(NoASM)'=='false'"></Build-Perl-asm>
-    <Build-Perl-platform Condition="'$(Platform)'=='Win32'">VC-WIN32</Build-Perl-platform>
-    <Build-Perl-platform Condition="'$(Platform)'=='x64'">VC-WIN64A</Build-Perl-platform>
-    <Build-Perl-dll Condition="'$(ConfigurationType)'=='DynamicLibrary'">shared</Build-Perl-dll>
-    <Build-Perl-dll Condition="'$(ConfigurationType)'=='StaticLibrary'">no-shared</Build-Perl-dll>
-  </PropertyGroup>
-  <Target Name="PerlDefs">
-    <Exec 
-        Command="
-            perl Configure no-rc5 no-idea enable-mdc2 threads $(Build-Perl-zlib) $(Build-Perl-dll) $(Build-Perl-asm) $(Build-Perl-platform)
-            perl util\mkfiles.pl >MINFO
-            perl .\util\mkdef.pl 32 libeay >..\..\vsprojects\coapp\openssl\libeay32.def
-        "
-        WorkingDirectory="$(MSBuildThisFileDirectory)$(OpenSslPath)\" />
-    <Copy 
-        SourceFiles="$(MSBuildThisFileDirectory)$(OpenSslPath)\crypto\opensslconf.h"
-        DestinationFolder="$(OutDir)Include\openssl\" />
-  </Target>
-  <PropertyGroup>
-    <AA1 Condition="( $(PlatformToolset.ToLower().IndexOf('v110')) &gt; -1 Or '$(PlatformToolset.ToLower())' == 'windowskernelmodedriver8.0' Or '$(PlatformToolset.ToLower())' == 'windowsapplicationfordrivers8.0' Or '$(PlatformToolset.ToLower())' == 'windowsusermodedriver8.0' )">true</AA1>
-    <AA2 Condition="'$(Platform.ToLower())' == 'win32'">true</AA2>
-    <AA3 Condition="( $(Configuration.ToLower().IndexOf('debug')) == -1 )">true</AA3>
-    <AA4 Condition="'$(Linkage-zlib.ToLower())' == 'dynamic'">true</AA4>
-    <AA5 Condition="'$(CallingConvention-zlib.ToLower())' == 'cdecl'">true</AA5>
-  </PropertyGroup>
-  <Target Name="Info2" BeforeTargets="Build">
-    <Message Text="*******************************************************************************" Importance="high" />
-    <Message Text="*  PlatformToolset : '$(AA1)'" Importance="high" />
-    <Message Text="*  Platform        : '$(AA2)'" Importance="high" />
-    <Message Text="*  Configuration   : '$(AA3)'" Importance="high" />
-    <Message Text="*  Linkage         : '$(AA4)'" Importance="high" />
-    <Message Text="*  CallingConv     : '$(AA5)'" Importance="high" />
-    <Message Text="*******************************************************************************" Importance="high" />
-    <MakeDir Directories="$(OutDir);$(IntDir);$(TargetDir)"/>
-  </Target>
-  <PropertyGroup>
-    <BuildDependsOn>Info2;PerlDefs;$(BuildDependsOn)</BuildDependsOn>
-  </PropertyGroup>
-</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/openssl/managed_targets/grpc.dependencies.openssl.redist.targets b/vsprojects/coapp/openssl/managed_targets/grpc.dependencies.openssl.redist.targets
deleted file mode 100644
index 6ee46ba3bc..0000000000
--- a/vsprojects/coapp/openssl/managed_targets/grpc.dependencies.openssl.redist.targets
+++ /dev/null
@@ -1,44 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <!-- 
-    Whether or not to copy native dependencies to output directory as part of build. 
-    If not explicitly specified in the project file, this defaults to true on Windows
-    and false on Unix systems.
-    -->
-    <CopyNativeDependencies Condition=" '$(CopyNativeDependencies)' == '' And '$(OS)' != 'Unix' ">true</CopyNativeDependencies>
-    <CopyNativeDependencies Condition=" '$(CopyNativeDependencies)' == '' And '$(OS)' == 'Unix' ">false</CopyNativeDependencies>
-    
-	<!-- 
-	Select which platform toolset of native dependencies to use based on VS version (v120 is the default).
-	Value can be explicitly specified in the project file.
-	-->
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' And '$(VisualStudioVersion)' == '14.0' ">v140</NativeDependenciesToolset>
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' And '$(VisualStudioVersion)' == '10.0' ">v100</NativeDependenciesToolset>
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' ">v120</NativeDependenciesToolset>
-	
-	<!-- Select which platform of native dependencies to use. Value can be explicitly specified in the project file. -->
-    <NativeDependenciesPlatform Condition=" '$(NativeDependenciesPlatform)' == '' ">Win32</NativeDependenciesPlatform>
-    
-    <!--
-    Select which configuration of native dependencies to use. Uses release build if project configuration is Release,
-    otherwise defaults to Debug. Value can be explicitly specified in the project file.
-    -->
-    <NativeDependenciesConfiguration Condition=" '$(NativeDependenciesConfiguration)' == '' And '$(Configuration)' == 'Release' ">Release</NativeDependenciesConfiguration>
-    <NativeDependenciesConfiguration Condition=" '$(NativeDependenciesConfiguration)' == '' ">Debug</NativeDependenciesConfiguration>
-  </PropertyGroup>
-  <Choose>
-    <!-- Under older versions of Monodevelop, Choose is not supported and is just ignored, which gives us the desired effect. -->
-    <When Condition=" '$(CopyNativeDependencies)' == 'true' ">
-      <ItemGroup>
-        <Content Include="$(MSBuildThisFileDirectory)..\..\build\native\bin\$(NativeDependenciesToolset)\$(NativeDependenciesPlatform)\$(NativeDependenciesConfiguration)\dynamic\libeay32.dll">
-          <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-        </Content>
-        <Content Include="$(MSBuildThisFileDirectory)..\..\build\native\bin\$(NativeDependenciesToolset)\$(NativeDependenciesPlatform)\$(NativeDependenciesConfiguration)\dynamic\ssleay32.dll">
-          <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-        </Content>
-      </ItemGroup>
-    </When>
-  <Otherwise />
-  </Choose>
-</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/openssl/openssl.sln b/vsprojects/coapp/openssl/openssl.sln
deleted file mode 100644
index 7825f18b8e..0000000000
--- a/vsprojects/coapp/openssl/openssl.sln
+++ /dev/null
@@ -1,39 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libeay32", "libeay32.vcxproj", "{BE42CA67-7C48-4882-BE59-111CB41142BE}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ssleay32", "ssleay32.vcxproj", "{7E05608D-A775-418F-946A-E9A0B84C6DFF}"
-	ProjectSection(ProjectDependencies) = postProject
-		{BE42CA67-7C48-4882-BE59-111CB41142BE} = {BE42CA67-7C48-4882-BE59-111CB41142BE}
-	EndProjectSection
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Debug|x64 = Debug|x64
-		Release|Win32 = Release|Win32
-		Release|x64 = Release|x64
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Debug|Win32.ActiveCfg = Debug|Win32
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Debug|Win32.Build.0 = Debug|Win32
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Debug|x64.ActiveCfg = Debug|x64
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Debug|x64.Build.0 = Debug|x64
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Release|Win32.ActiveCfg = Release|Win32
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Release|Win32.Build.0 = Release|Win32
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Release|x64.ActiveCfg = Release|x64
-		{BE42CA67-7C48-4882-BE59-111CB41142BE}.Release|x64.Build.0 = Release|x64
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Debug|Win32.ActiveCfg = Debug|Win32
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Debug|Win32.Build.0 = Debug|Win32
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Debug|x64.ActiveCfg = Debug|x64
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Debug|x64.Build.0 = Debug|x64
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Release|Win32.ActiveCfg = Release|Win32
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Release|Win32.Build.0 = Release|Win32
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Release|x64.ActiveCfg = Release|x64
-		{7E05608D-A775-418F-946A-E9A0B84C6DFF}.Release|x64.Build.0 = Release|x64
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
diff --git a/vsprojects/coapp/openssl/packages.config b/vsprojects/coapp/openssl/packages.config
deleted file mode 100644
index 2d4749d069..0000000000
--- a/vsprojects/coapp/openssl/packages.config
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="grpc.dependencies.zlib" version="1.2.8.10" targetFramework="Native" />
-  <package id="grpc.dependencies.zlib.redist" version="1.2.8.10" targetFramework="Native" />
-</packages>
\ No newline at end of file
diff --git a/vsprojects/coapp/openssl/ssleay32.vcxproj b/vsprojects/coapp/openssl/ssleay32.vcxproj
deleted file mode 100644
index 3ed1361d99..0000000000
--- a/vsprojects/coapp/openssl/ssleay32.vcxproj
+++ /dev/null
@@ -1,240 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup>
-    <OpenSslPath>..\..\..\third_party\openssl</OpenSslPath>
-  </PropertyGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{7E05608D-A775-418F-946A-E9A0B84C6DFF}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>$(LibName)</RootNamespace>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="ConfigurationSettings">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <PlatformToolset>v110</PlatformToolset>
-    <CallingConvention>Cdecl</CallingConvention>
-    <OutputPath>output\$(PlatformToolset)\$(Platform)\$(Configuration)\$(UsesConfigurationType)\</OutputPath>
-    <OutDir>$(OutputPath)</OutDir>
-  </PropertyGroup>
-  <Import Project="$(CoAppEtcDirectory)vcxproj.inc" Condition="Exists('$(CoAppEtcDirectory)vcxproj.inc')" />
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.props')" Project=".\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.props" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.props')" Project=".\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.props" />
-  <ImportGroup Label="ExtensionSettings" />
-  <ImportGroup Label="PropertySheets">
-    <Import Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup>
-    <LinkIncremental Condition="'$(Configuration)'=='Release'">false</LinkIncremental>
-    <LinkIncremental Condition="'$(Configuration)'=='Debug'">true</LinkIncremental>
-    <CallingConvention-zlib>$(CallingConvention)</CallingConvention-zlib>
-    <Linkage-zlib>$(UsesConfigurationType)</Linkage-zlib>
-  </PropertyGroup>
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <AdditionalIncludeDirectories>$(OpenSslPath);$(OpenSslPath)\inc32;$(OpenSslPath)\crypto;$(OpenSslPath)\include;$(OutDir);$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <BufferSecurityCheck>true</BufferSecurityCheck>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <!-- <PreprocessorDefinitions>OPENSSL_USE_APPLINK;%(PreprocessorDefinitions)</PreprocessorDefinitions> -->
-      <!-- <PreprocessorDefinitions>BUILDING_V8_SHARED=1;BUILDING_UV_SHARED=1;%(PreprocessorDefinitions)</PreprocessorDefinitions> -->
-      <!-- <PreprocessorDefinitions>OPENSSL_EXPORT_VAR_AS_FUNCTION;PURIFY;%(PreprocessorDefinitions)</PreprocessorDefinitions> -->
-      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;L_ENDIAN;MK1MF_BUILD;WIN32_LEAN_AND_MEAN;OPENSSL_THREADS;ZLIB;OPENSSL_SYSNAME_WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_BUILD_SHLIBSSL;OPENSSL_NO_IDEA;OPENSSL_NO_RC5;OPENSSL_NO_MD2;OPENSSL_NO_KRB5;OPENSSL_NO_JPAKE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>DSO_WIN32;UNICODE;_UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='DynamicLibrary'">_WINDLL;_REENTRANT;OPENSSL_NO_STATIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='StaticLibrary'">OPENSSL_NO_DYNAMIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(Linkage-zlib)'=='dynamic'">ZLIB_SHARED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_NO_ASM;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <CallingConvention>%(CallingConvention)</CallingConvention>
-      <StringPooling>true</StringPooling>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <TreatWarningAsError>false</TreatWarningAsError>
-      <WarningLevel>Level3</WarningLevel>
-    </ClCompile>
-    <Lib>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <!--
-      <IgnoreSpecificDefaultLibraries>zlib$(OutNameSuffix).lib;%(IgnoreSpecificDefaultLibraries)</IgnoreSpecificDefaultLibraries>
-      -->
-    </Lib>
-    <Link>
-      <AllowIsolation>true</AllowIsolation>
-      <DataExecutionPrevention>true</DataExecutionPrevention>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <RandomizedBaseAddress>true</RandomizedBaseAddress>
-      <SuppressStartupBanner>true</SuppressStartupBanner>
-      <AdditionalDependencies>ws2_32.lib;crypt32.lib;libeay32$(OutNameSuffix).lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
-      <ModuleDefinitionFile>.\ssleay32.def</ModuleDefinitionFile>
-    </Link>
-    <ResourceCompile>
-      <AdditionalIncludeDirectories>$(OpenSslPath);$(OpenSslPath)\inc32;$(OpenSslPath)\crypto;$(OpenSslPath)\include;$(OutDir);$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;L_ENDIAN;MK1MF_BUILD;WIN32_LEAN_AND_MEAN;OPENSSL_THREADS;ZLIB;OPENSSL_SYSNAME_WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_BUILD_SHLIBSSL;OPENSSL_NO_IDEA;OPENSSL_NO_RC5;OPENSSL_NO_MD2;OPENSSL_NO_KRB5;OPENSSL_NO_JPAKE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>DSO_WIN32;UNICODE;_UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='DynamicLibrary'">_WINDLL;_REENTRANT;OPENSSL_NO_STATIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(ConfigurationType)'=='StaticLibrary'">OPENSSL_NO_DYNAMIC_ENGINE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions Condition="'$(Linkage-zlib)'=='dynamic'">ZLIB_SHARED;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>OPENSSL_NO_ASM;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PreprocessorDefinitions>SSL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
-    <ClCompile>
-      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
-      <ExceptionHandling>Sync</ExceptionHandling>
-      <MinimalRebuild>false</MinimalRebuild>
-      <OmitFramePointers>false</OmitFramePointers>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>DEBUG;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
-    <ResourceCompile>
-      <PreprocessorDefinitions>DEBUG;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
-    <ClCompile>
-      <AdditionalOptions>/MP %(AdditionalOptions)</AdditionalOptions>
-      <ExceptionHandling>false</ExceptionHandling>
-      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <OmitFramePointers>true</OmitFramePointers>
-      <Optimization>Full</Optimization>
-      <RuntimeTypeInfo>false</RuntimeTypeInfo>
-      <WholeProgramOptimization>true</WholeProgramOptimization>
-    </ClCompile>
-    <Link>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <ResourceCompile>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Platform)'=='Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">MultiThreadedDebug</RuntimeLibrary>
-      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">MultiThreaded</RuntimeLibrary>
-    </ClCompile>
-    <ResourceCompile>
-      <PreprocessorDefinitions>WIN32;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Platform)'=='x64'">
-    <ClCompile>
-      <PreprocessorDefinitions>WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">MultiThreadedDebug</RuntimeLibrary>
-      <RuntimeLibrary Condition="'$(Configuration)|$(Platform)'=='Release|x64'">MultiThreaded</RuntimeLibrary>
-    </ClCompile>
-    <ResourceCompile>
-      <PreprocessorDefinitions>WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ResourceCompile>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <None Include="openssl.gyp" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_pkt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_enc.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s23_pkt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_meth.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_asn1.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s23_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\tls_srp.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_txt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_algs.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s23_srvr.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_both.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_meth.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_err2.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\bio_ssl.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_meth.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_clnt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\kssl.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_enc.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_clnt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_srvr.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_cert.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_clnt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_stat.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_sess.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_both.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_srtp.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_pkt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s23_clnt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\t1_reneg.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_enc.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_rsa.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s23_meth.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_lib.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_ciph.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_srvr.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_err.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\ssl_utst.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s2_clnt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_pkt.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_srvr.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_srvr.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\s3_cbc.c" />
-    <ClCompile Include="$(OpenSslPath)\ssl\d1_meth.c" />
-	<ClCompile Include="$(OpenSslPath)\ssl\ssl_conf.c" />
-	<ClCompile Include="$(OpenSslPath)\ssl\t1_ext.c" />
-	<ClCompile Include="$(OpenSslPath)\ssl\t1_trce.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="$(OpenSslPath)\ms\version32.rc" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets')" Project=".\packages\grpc.dependencies.zlib.1.2.8.10\build\native\grpc.dependencies.zlib.targets" />
-  <Import Condition="exists('.\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets')" Project=".\packages\grpc.dependencies.zlib.redist.1.2.8.10\build\native\grpc.dependencies.zlib.redist.targets" />
-  <ImportGroup Label="ExtensionTargets" />
-  <PropertyGroup>
-    <Build-Perl-zlib Condition="'$(Linkage-zlib)'=='dynamic'">zlib-dynamic</Build-Perl-zlib>
-    <Build-Perl-zlib Condition="'$(Linkage-zlib)'=='static'">zlib</Build-Perl-zlib>
-    <Build-Perl-asm Condition="'$(NoASM)'=='true'">no-asm</Build-Perl-asm>
-    <Build-Perl-asm Condition="'$(NoASM)'=='false'"></Build-Perl-asm>
-    <Build-Perl-platform Condition="'$(Platform)'=='Win32'">VC-WIN32</Build-Perl-platform>
-    <Build-Perl-platform Condition="'$(Platform)'=='x64'">VC-WIN64A</Build-Perl-platform>
-    <Build-Perl-dll Condition="'$(ConfigurationType)'=='DynamicLibrary'">shared</Build-Perl-dll>
-    <Build-Perl-dll Condition="'$(ConfigurationType)'=='StaticLibrary'">no-shared</Build-Perl-dll>
-  </PropertyGroup>
-  <Target Name="PerlDefs">
-    <Exec 
-        Command="
-            perl Configure no-rc5 no-idea enable-mdc2 threads $(Build-Perl-zlib) $(Build-Perl-dll) $(Build-Perl-asm) $(Build-Perl-platform)
-            perl util\mkfiles.pl >MINFO
-            perl .\util\mkdef.pl 32 ssleay >..\..\vsprojects\coapp\openssl\ssleay32.def
-        "
-        WorkingDirectory="$(MSBuildThisFileDirectory)$(OpenSslPath)\" />
-  </Target>
-  <PropertyGroup>
-    <BuildDependsOn>PerlDefs;$(BuildDependsOn)</BuildDependsOn>
-  </PropertyGroup>
-</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/openssl/version.inc b/vsprojects/coapp/openssl/version.inc
deleted file mode 100644
index aa801bea5b..0000000000
--- a/vsprojects/coapp/openssl/version.inc
+++ /dev/null
@@ -1 +0,0 @@
-#define { package-version: 1.0.204.1; } 
diff --git a/vsprojects/coapp/zlib/.gitignore b/vsprojects/coapp/zlib/.gitignore
deleted file mode 100644
index 7c93b345a3..0000000000
--- a/vsprojects/coapp/zlib/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-*.nupkg
-/nuget.exe
-/Intermediate
-/Output
-
diff --git a/vsprojects/coapp/zlib/README.md b/vsprojects/coapp/zlib/README.md
deleted file mode 100644
index e9a89c030e..0000000000
--- a/vsprojects/coapp/zlib/README.md
+++ /dev/null
@@ -1,36 +0,0 @@
-Zlib Native Nuget package
--------------------------
-
-Uses [CoApp](http://coapp.org/) project to build the zlib package.
-
-Prerequisites
--------------
-Multiple versions of VS installed to be able to build all the targets:
-* Visual Studio 2015
-* Visual Studio 2013
-* Visual Studio 2010 (you might need SP1 to prevent LNK1123 error)
-
-CoApp toolkit: http://coapp.org/files/CoApp.Tools.Powershell.msi
-
-More details on installation: http://coapp.org/tutorials/installation.html
-
-Building
---------
-
-Build all flavors of zlib library using the provided batch file.
-```
-buildall.bat
-```
-
-Then, create NuGet package using powershell (you'll need the CoApp toolkit installed):
-```
-[THIS_DIRECTORY]> Write-NuGetPackage grpc.dependencies.zlib.autopkg
-```
-
-This will create three NuGet packages:
-* the main dev package
-* the redistributable package that contains just the binaries and no headers
-* the symbols package (debug symbols)
-
-Later, you can push the package to NuGet.org repo.
-Attention: before pusing the resulting nuget package to public nuget repo, you have to be 100% sure it works correctly - there’s no way how to delete or update an already existing package.
diff --git a/vsprojects/coapp/zlib/buildall.bat b/vsprojects/coapp/zlib/buildall.bat
deleted file mode 100644
index 6780e449ad..0000000000
--- a/vsprojects/coapp/zlib/buildall.bat
+++ /dev/null
@@ -1,77 +0,0 @@
-@rem Copyright 2016 gRPC authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem     http://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-
-@echo off
-setlocal
-
-REM setlocal
-REM call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" amd64
-REM call :build x64 Release v100 || goto :eof
-REM call :build x64 Debug v100 || goto :eof
-REM endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v100 || goto :eof
-call :build Win32 Debug v100 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
-call :build x64 Release v140 || goto :eof
-call :build x64 Debug v140 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v140 || goto :eof
-call :build Win32 Debug v140 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" amd64
-call :build x64 Release v120 || goto :eof
-call :build x64 Debug v120 || goto :eof
-endlocal
-
-setlocal
-call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86
-call :build Win32 Release v120 || goto :eof
-call :build Win32 Debug v120 || goto :eof
-endlocal
-
-REM setlocal
-REM call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" amd64
-REM call :build x64 Release v110 || goto :eof
-REM call :build x64 Debug v110 || goto :eof
-REM endlocal
-
-REM setlocal
-REM call "C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\vcvarsall.bat" x86
-REM call :build Win32 Release v110 || goto :eof
-REM call :build Win32 Debug v110 || goto :eof
-REM endlocal
-
-goto :eof
-
-:build
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Dynamic /P:CallingConvention=cdecl .\zlib.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Dynamic /P:CallingConvention=stdcall .\zlib.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Static /P:CallingConvention=cdecl .\zlib.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=Static /P:CallingConvention=stdcall .\zlib.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=ltcg /P:CallingConvention=cdecl .\zlib.sln || goto :eof
-msbuild /m:4 /P:Platform=%1 /P:Configuration=%2 /P:PlatformToolset=%3 /P:UsesConfigurationType=ltcg /P:CallingConvention=stdcall .\zlib.sln || goto :eof
-goto :eof
-
-
diff --git a/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg b/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg
deleted file mode 100644
index 9dcc43aef3..0000000000
--- a/vsprojects/coapp/zlib/grpc.dependencies.zlib.autopkg
+++ /dev/null
@@ -1,108 +0,0 @@
-@import @"version.inc";
-
-configurations
-{
-    // See https://github.com/coapp/coapp.powershell/issues/112
-    Toolset
-    {
-        key : "PlatformToolset"; // this is CoApp pre-defined key
-        choices: { v140, v120, v110, v100 };
-    };
-}
-
-#define { 
-      package-id = "grpc.dependencies.zlib";
-}
-
-nuget {
-	// the nuspec file metadata. Gets created/updated on build
-	nuspec {
-		id = ${package-id};
-		version : ${package-version};
-		title: gRPC Native Dependency: ZLib compression library;
-		authors: {Jean-loup Gailly, Mark Adler, Garrett Serack, Tim Rogers};
-		owners: {Jan Tattermusch};
-		licenseUrl: "http://zlib.net/zlib-license.html";
-		projectUrl: "http://github.com/grpc/grpc";
-		iconUrl: "http://zlib.net/images/zlib3d-b1.png";
-		requireLicenseAcceptance:false;
-		summary:A zlib library;
-		description: @"A native zlib library.
-	zlib homepage:  http://zlib.net";
-		releaseNotes: "Release of zlib 1.2.8 libraries.";
-		copyright: Copyright 2013;
-		tags: { zlib, native, CoApp };
-
-	};
-
-	// the files that go into the content folders
-	// (inserted into the nuspec file)
-	files {
-	    // .targets file that are applied when redist package is installed from a managed project.
-		managed_build: {
-		  #output {
-              package = redist;
-          };
-		  #destination = "\build\portable-net45+netcore45+wpa81+wp8";
-		  "managed_targets\${package-id}.redist.targets";
-		};
-	
-		include: { ..\..\..\third_party\zlib\zlib.h, ..\..\..\third_party\zlib\zconf.h };
-
-		docs: {  ..\..\..\third_party\zlib\doc\**\* };
-        
-        source += {
-            "..\..\..\third_party\zlib\adler32.c",
-            "..\..\..\third_party\zlib\compress.c",
-            "..\..\..\third_party\zlib\crc32.c",
-            "..\..\..\third_party\zlib\deflate.c",
-            "..\..\..\third_party\zlib\gzclose.c",
-            "..\..\..\third_party\zlib\gzlib.c",
-            "..\..\..\third_party\zlib\gzread.c",
-            "..\..\..\third_party\zlib\gzwrite.c",
-            "..\..\..\third_party\zlib\infback.c",
-            "..\..\..\third_party\zlib\inffast.c",
-            "..\..\..\third_party\zlib\inflate.c",
-            "..\..\..\third_party\zlib\inftrees.c",
-            "..\..\..\third_party\zlib\trees.c",
-            "..\..\..\third_party\zlib\uncompr.c",
-            "..\..\..\third_party\zlib\zutil.c",
-            "..\..\..\third_party\zlib\crc32.h",
-            "..\..\..\third_party\zlib\deflate.h",
-            "..\..\..\third_party\zlib\gzguts.h",
-            "..\..\..\third_party\zlib\inffast.h",
-            "..\..\..\third_party\zlib\inffixed.h",
-            "..\..\..\third_party\zlib\inflate.h",
-            "..\..\..\third_party\zlib\inftrees.h",
-            "..\..\..\third_party\zlib\trees.h",
-            "..\..\..\third_party\zlib\zconf.h",
-            "..\..\..\third_party\zlib\zlib.h",
-            "..\..\..\third_party\zlib\zutil.h",
-            "..\..\..\third_party\zlib\contrib\masmx64\inffas8664.c",
-        };
-		("v100,v120,v140", "Win32,x64", "Release,Debug", "Dynamic", "cdecl,stdcall", "MultiByte") => {
-			[${0},${1},${2},${3},${4}] {
-				lib:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.lib };
-				bin:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.dll };
-				symbols: { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.pdb };
-			};
-		};
-		("v100,v120,v140", "Win32,x64", "Release,Debug", "Static,ltcg", "cdecl,stdcall", "MultiByte") => {
-			[${0},${1},${2},${3},${4}] {
-				lib:     { .\output\${0}\${1}\${2}\${3}\${4}\${5}\*.lib };
-			};
-		};
-
-	};
-
-	// the VC++ .targets file that gets generated and inserted into the ${d_content} folder
-	targets {
-		Defines += HAS_ZLIB;
-		[dynamic]
-			Defines += ZLIB_DLL;
-		[stdcall]
-			Defines += ZLIB_WINAPI;
-			
-	};
-}
-
diff --git a/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets b/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets
deleted file mode 100644
index 03002d0727..0000000000
--- a/vsprojects/coapp/zlib/managed_targets/grpc.dependencies.zlib.redist.targets
+++ /dev/null
@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <!-- 
-    Whether or not to copy native dependencies to output directory as part of build. 
-    If not explicitly specified in the project file, this defaults to true on Windows
-    and false on Unix systems.
-    -->
-    <CopyNativeDependencies Condition=" '$(CopyNativeDependencies)' == '' And '$(OS)' != 'Unix' ">true</CopyNativeDependencies>
-    <CopyNativeDependencies Condition=" '$(CopyNativeDependencies)' == '' And '$(OS)' == 'Unix' ">false</CopyNativeDependencies>
-    
-	<!-- 
-	Select which platform toolset of native dependencies to use based on VS version (v120 is the default).
-	Value can be explicitly specified in the project file.
-	-->
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' And '$(VisualStudioVersion)' == '14.0' ">v140</NativeDependenciesToolset>
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' And '$(VisualStudioVersion)' == '10.0' ">v100</NativeDependenciesToolset>
-	<NativeDependenciesToolset Condition=" '$(NativeDependenciesToolset)' == '' ">v120</NativeDependenciesToolset>
-	
-	<!-- Select which platform of native dependencies to use. Value can be explicitly specified in the project file. -->
-    <NativeDependenciesPlatform Condition=" '$(NativeDependenciesPlatform)' == '' ">Win32</NativeDependenciesPlatform>
-    
-    <!--
-    Select which configuration of native dependencies to use. Uses release build if project configuration is Release,
-    otherwise defaults to Debug. Value can be explicitly specified in the project file.
-    -->
-    <NativeDependenciesConfiguration Condition=" '$(NativeDependenciesConfiguration)' == '' And '$(Configuration)' == 'Release' ">Release</NativeDependenciesConfiguration>
-    <NativeDependenciesConfiguration Condition=" '$(NativeDependenciesConfiguration)' == '' ">Debug</NativeDependenciesConfiguration>
-	
-	<ZlibCallingConvention Condition=" '$(ZlibCallingConvention)' == '' ">cdecl</ZlibCallingConvention>
-  </PropertyGroup>
-  <Choose>
-    <!-- Under older versions of Monodevelop, Choose is not supported and is just ignored, which gives us the desired effect. -->
-    <When Condition=" '$(CopyNativeDependencies)' == 'true' ">
-      <ItemGroup>
-        <Content Include="$(MSBuildThisFileDirectory)..\..\build\native\bin\$(NativeDependenciesToolset)\$(NativeDependenciesPlatform)\$(NativeDependenciesConfiguration)\dynamic\$(ZlibCallingConvention)\zlib.dll">
-          <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-        </Content>
-      </ItemGroup>
-	</When>
-  <Otherwise />
-  </Choose>
-</Project>
\ No newline at end of file
diff --git a/vsprojects/coapp/zlib/version.inc b/vsprojects/coapp/zlib/version.inc
deleted file mode 100644
index fd1a8cf773..0000000000
--- a/vsprojects/coapp/zlib/version.inc
+++ /dev/null
@@ -1 +0,0 @@
-#define { package-version : 1.2.8.10; } 
diff --git a/vsprojects/coapp/zlib/zlib.sln b/vsprojects/coapp/zlib/zlib.sln
deleted file mode 100644
index 7c38e6e121..0000000000
--- a/vsprojects/coapp/zlib/zlib.sln
+++ /dev/null
@@ -1,26 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib.vcxproj", "{63BED288-E8C3-4345-B84D-2E64598DCF3A}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Release|Win32 = Release|Win32
-		Debug|x64 = Debug|x64
-		Release|x64 = Release|x64
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|Win32.ActiveCfg = Debug|Win32
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|Win32.Build.0 = Debug|Win32
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|Win32.ActiveCfg = Release|Win32
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|Win32.Build.0 = Release|Win32
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|x64.ActiveCfg = Debug|x64
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Debug|x64.Build.0 = Debug|x64
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|x64.ActiveCfg = Release|x64
-		{63BED288-E8C3-4345-B84D-2E64598DCF3A}.Release|x64.Build.0 = Release|x64
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
diff --git a/vsprojects/coapp/zlib/zlib.vcxproj b/vsprojects/coapp/zlib/zlib.vcxproj
deleted file mode 100644
index 56df39a248..0000000000
--- a/vsprojects/coapp/zlib/zlib.vcxproj
+++ /dev/null
@@ -1,147 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="PreBuildCmds;PreBuildTargets;Build;PostBuildCmds;PostBuildTargets" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup Label="CoApp" >
-    <CoAppEtcDirectory>$(registry:HKEY_LOCAL_MACHINE\Software\Outercurve\CoApp.Powershell\etc)</CoAppEtcDirectory>
-    
-    <!-- Set to true to make visual studio use PTK when building.-->
-    <UsePTKFromVisualStudio>false</UsePTKFromVisualStudio>
-  </PropertyGroup>
-
-  <PropertyGroup Label="Configuration" >
-    <!-- This lets Visual Studio see this as a VC12 project by default -->
-    <PlatformToolset Condition="'$(PlatformToolset)' == ''">v120</PlatformToolset>
-  </PropertyGroup>
-
-  <Import Condition="Exists('$(CoAppEtcDirectory)\common-variables.vcxproj')" Project="$(CoAppEtcDirectory)\common-variables.vcxproj" />
-  
-  <PropertyGroup Label="CustomSettings" />
-  
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{63BED288-E8C3-4345-B84D-2E64598DCF3A}</ProjectGuid>
-    <RootNamespace>$(MSBuildProjectName)</RootNamespace>
-    
-    <OutNameSuffix Condition="$(IS_CDECL) AND $(IS_DYNAMIC)">1</OutNameSuffix>
-
-    <!-- set to Application or DynamicLibrary (DynamicLibrary can get altered to StaticLibrary by PTK -->
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-
-    <!-- Common Compiler Defines (semicolon delimited) -->
-    <Defines>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;</Defines>
-    <Defines Condition="$(IS_STDCALL)">$(Defines);ZLIB_WINAPI;</Defines>
-    <Defines Condition="$(IS_DYNAMIC)">$(Defines);ZLIB_DLL;</Defines>
-    <Defines Condition="'$(AppContainer)' == 'App'">$(Defines);IOWIN32_USING_WINRT_API=1;</Defines>
-    <Defines Condition="'$(AppContainer)' != 'App'">$(Defines);IOWIN32_USING_WINRT_API=0;</Defines>
-    <Defines Condition="'$(UseASM)' == 'ASM'">$(Defines);ASMV;ASMINF;</Defines>
-    <Defines Condition="$(IS_X64)">$(Defines);WIN64;</Defines>
-
-    <!-- Additional Include folders (semicolon delimited) -->
-    <IncludeDirectories>..\..\..\third_party\zlib;</IncludeDirectories>
-
-    <!-- Additional Library folders (semicolon delimited) -->
-    <LibraryDirectories></LibraryDirectories>
-
-    <!-- Libraries to Link with -->
-    <Libraries></Libraries>
-    
-    <!-- Batch script to run before Build-->
-    <PreBuild></PreBuild>
-
-    <!-- Batch script to run after Build-->
-    <PostBuild></PostBuild>
-
-    <!-- Batch script to run before Link step-->
-    <PreLink></PreLink>
-
-    <!-- Batch script to run after Link-->
-    <PostLink></PostLink>
-
-    <!-- Batch script to run before Lib step-->
-    <PreLib></PreLib>
-
-    <!-- Batch script to run after Lib-->
-    <PostLib></PostLib>
-
-    <!-- Targets to run before Build (semcolon delimited)-->
-    <PreBuildTargets></PreBuildTargets>
-
-    <!-- Targets to run before Build (semcolon delimited)-->
-    <PostBuildTargets></PostBuildTargets>
-  
-    <!-- for Dynamic libs, you can specify the Module .DEF file path -->
-    <ModuleDefinitionFile></ModuleDefinitionFile>
-  </PropertyGroup>
-
-  <Import Condition="Exists('$(CoAppEtcDirectory)\common-header.vcxproj')" Project="$(CoAppEtcDirectory)\common-header.vcxproj" />
-  <Import Condition="'$(UseASM)' == 'ASM'" Project="$(VCTargetsPath)\BuildCustomizations\masm.props" />
-
-  <PropertyGroup>
-    <OutDir>$(ProjectRootDir)Output/$(PlatformToolset)/$(Platform)/$(Configuration)/$(UsesConfigurationType)/$(CallingConvention)/$(CharacterSet)/$(AppContainer)/$(UseASM)/</OutDir>
-    <IntDir>$(ProjectRootDir)Intermediate/$(TargetName)/$(PlatformToolset)/$(Platform)/$(Configuration)/$(UsesConfigurationType)/$(CallingConvention)/$(CharacterSet)/$(AppContainer)/$(UseASM)/</IntDir>
-  </PropertyGroup>
-
-  <ItemDefinitionGroup>
-    <ClCompile>
-	  <SDLCheck>true</SDLCheck>
-    </ClCompile>
-    <Link>
-      <BaseAddress>0x5A4C0000</BaseAddress>
-    </Link>
-  </ItemDefinitionGroup>
-  
-  <ItemGroup Condition="'$(UseASM)' == 'ASM'">
-    <MASM Include="..\..\..\third_party\zlib\contrib\masmx64\gvmat64.asm" Condition="$(IS_X64)">
-      <AssembledCodeListingFile>$(IntDir)gvmat64.lst</AssembledCodeListingFile>
-      <MASMBeforeTargets>Build</MASMBeforeTargets>
-      <ObjectFileName>$(IntDir)gvmat64.obj</ObjectFileName>
-    </MASM>
-    <MASM Include="..\..\..\third_party\zlib\contrib\masmx64\inffasx64.asm" Condition="$(IS_X64)">
-      <AssembledCodeListingFile>$(IntDir)inffasx64.lst</AssembledCodeListingFile>
-      <MASMBeforeTargets>Build</MASMBeforeTargets>
-      <ObjectFileName>$(IntDir)inffasx64.obj</ObjectFileName>
-    </MASM>
-    <MASM Include="..\..\..\third_party\zlib\contrib\masmx86\inffas32.asm" Condition="$(IS_X86) AND $(IS_STDCALL)">
-      <AssembledCodeListingFile>$(IntDir)inffas32.lst</AssembledCodeListingFile>
-      <MASMBeforeTargets>Build</MASMBeforeTargets>
-	  <UseSafeExceptionHandlers>true</UseSafeExceptionHandlers>
-      <AdditionalOptions>/coff %(AdditionalOptions)</AdditionalOptions>
-      <ObjectFileName>$(IntDir)inffas32.obj</ObjectFileName>
-    </MASM>
-    <MASM Include="..\..\..\third_party\zlib\contrib\masmx86\match686.asm" Condition="$(IS_X86) AND $(IS_STDCALL)">
-      <AssembledCodeListingFile>$(IntDir)match686.lst</AssembledCodeListingFile>
-      <MASMBeforeTargets>Build</MASMBeforeTargets>
-	  <UseSafeExceptionHandlers>true</UseSafeExceptionHandlers>
-      <AdditionalOptions>/coff %(AdditionalOptions)</AdditionalOptions>
-      <ObjectFileName>$(IntDir)match686.obj</ObjectFileName>
-    </MASM>
-  </ItemGroup>
-
-  <ItemGroup Label="C Source Files">
-    <!-- Include the source files to compile here -->
-    <!-- <ClCompile Include="..\src\foo.c" /> -->
-    <ClCompile Include="..\..\..\third_party\zlib\adler32.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\compress.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\crc32.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\deflate.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\gzclose.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\gzlib.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\gzread.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\gzwrite.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\infback.c" />
-    <ClCompile Include="..\..\..\third_party\zlib\contrib\masmx64\inffas8664.c" Condition="$(IS_X64)" />
-    <ClCompile Include="..\..\..\third_party\zlib\inffast.c" />
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diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 8a659280a4..fbb9fde753 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -267,6 +267,17 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
@@ -287,92 +298,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_windows.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h" />
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_settings.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\incoming_metadata.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\internal.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\stream_map.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\varint.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\alpn\alpn.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\client\http_client_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\message_compress\message_compress_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\server\http_server_filter.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\composite\composite_credentials.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\credentials.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\google_default\google_default_credentials.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\iam\iam_credentials.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\jwt\jwt_credentials.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\jwt\jwt_verifier.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\secure_endpoint.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\security_connector.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.h" />
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_registry.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\chttp2_connector.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\inproc\inproc_transport.h" />
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.h" />
@@ -384,6 +312,8 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\httpcli.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\parser.h" />
@@ -402,7 +332,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname.h" />
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@@ -411,7 +340,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\lockfree_event.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\nameser.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.h" />
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@@ -459,7 +387,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
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@@ -488,12 +415,87 @@
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_settings.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\incoming_metadata.h" />
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     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\fake\fake_resolver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_ev_driver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_wrapper.h" />
@@ -545,6 +547,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\httpcli.c">
@@ -585,12 +591,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_fallback.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_host_name_max.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
@@ -793,8 +793,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\flow_control.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.c">
@@ -893,8 +891,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security_grpc.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security_adapter.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index 6879047f55..5332066df6 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -34,6 +34,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.c">
       <Filter>src\core\lib\compression</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
       <Filter>src\core\lib\http</Filter>
     </ClCompile>
@@ -94,15 +100,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_fallback.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_host_name_max.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -406,9 +403,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.c">
       <Filter>src\core\ext\transport\chttp2\transport</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\flow_control.c">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.c">
       <Filter>src\core\ext\transport\chttp2\transport</Filter>
     </ClCompile>
@@ -556,9 +550,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
       <Filter>src\core\tsi</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security_grpc.c">
-      <Filter>src\core\tsi</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
       <Filter>src\core\tsi</Filter>
     </ClCompile>
@@ -777,6 +768,39 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h">
+      <Filter>include\grpc\support</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -837,260 +861,11 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security.h">
       <Filter>include\grpc</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h">
       <Filter>include\grpc</Filter>
     </ClInclude>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\message_compress\message_compress_filter.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\server\http_server_filter.h">
-      <Filter>src\core\ext\filters\http\server</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\composite\composite_credentials.h">
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-      <Filter>src\core\lib\security\credentials\fake</Filter>
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-      <Filter>src\core\lib\security\credentials\google_default</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\iam\iam_credentials.h">
-      <Filter>src\core\lib\security\credentials\iam</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\jwt\json_token.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\jwt\jwt_credentials.h">
-      <Filter>src\core\lib\security\credentials\jwt</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\jwt\jwt_verifier.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\oauth2\oauth2_credentials.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\plugin\plugin_credentials.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\credentials\ssl\ssl_credentials.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\auth_filters.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\inproc\inproc_transport.h">
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@@ -1124,6 +899,12 @@
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       <Filter>src\core\lib\compression</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats.h">
+      <Filter>src\core\lib\debug</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.h">
+      <Filter>src\core\lib\debug</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h">
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@@ -1178,9 +959,6 @@
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@@ -1205,9 +983,6 @@
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@@ -1349,9 +1124,6 @@
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@@ -1436,6 +1208,219 @@
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     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h">
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+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.h">
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+      <Filter>src\core\lib\security\transport</Filter>
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+      <Filter>src\core\lib\security\transport</Filter>
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+      <Filter>src\core\tsi</Filter>
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+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
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+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_adapter.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h">
+      <Filter>src\core\tsi</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h">
+      <Filter>src\core\ext\transport\chttp2\server</Filter>
+    </ClInclude>
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+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\connector.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
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+      <Filter>src\core\ext\filters\client_channel</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_factory.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_registry.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\parse_address.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper_registry.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_registry.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.h">
+      <Filter>src\core\ext\filters\client_channel</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h">
+      <Filter>src\core\ext\filters\deadline</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\chttp2_connector.h">
+      <Filter>src\core\ext\transport\chttp2\client</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\inproc\inproc_transport.h">
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+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy\grpclb\client_load_reporting_filter.h">
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       <Filter>src\core\ext\filters\client_channel\lb_policy\grpclb\proto\grpc\lb\v1</Filter>
     </ClInclude>
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+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h">
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+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h">
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+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h">
+      <Filter>third_party\nanopb</Filter>
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     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\fake\fake_resolver.h">
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diff --git a/vsprojects/vcxproj/grpc/packages.config b/vsprojects/vcxproj/grpc/packages.config
deleted file mode 100644
index 13203e29fa..0000000000
--- a/vsprojects/vcxproj/grpc/packages.config
+++ /dev/null
@@ -1,10 +0,0 @@
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diff --git a/vsprojects/vcxproj/grpc_cli_libs/grpc_cli_libs.vcxproj b/vsprojects/vcxproj/grpc_cli_libs/grpc_cli_libs.vcxproj
deleted file mode 100644
index ba97f97e1d..0000000000
--- a/vsprojects/vcxproj/grpc_cli_libs/grpc_cli_libs.vcxproj
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@@ -1,200 +0,0 @@
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diff --git a/vsprojects/vcxproj/grpc_ruby_plugin/grpc_ruby_plugin.vcxproj.filters b/vsprojects/vcxproj/grpc_ruby_plugin/grpc_ruby_plugin.vcxproj.filters
deleted file mode 100644
index 5eca183507..0000000000
--- a/vsprojects/vcxproj/grpc_ruby_plugin/grpc_ruby_plugin.vcxproj.filters
+++ /dev/null
@@ -1,18 +0,0 @@
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diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
index 1766e2445d..3fd0fb5f9f 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
@@ -147,6 +147,17 @@
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+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
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-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
@@ -527,102 +608,6 @@
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     <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\channel_connectivity.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_plugin.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\connector.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_proxy.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_factory.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_registry.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\parse_address.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper_registry.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_registry.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.c">
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-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.c">
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-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.c">
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-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_plugin.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.c">
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-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\flow_control.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_settings.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\incoming_metadata.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\parsing.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\stream_lists.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\stream_map.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\varint.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\writing.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\alpn\alpn.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\http\client\http_client_filter.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\http\http_filters_plugin.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\http\message_compress\message_compress_filter.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\http\server\http_server_filter.c">
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr_test_util\gpr_test_util.vcxproj">
diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
index 8516a07196..d51623834f 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
@@ -91,6 +91,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.c">
       <Filter>src\core\lib\compression</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
       <Filter>src\core\lib\http</Filter>
     </ClCompile>
@@ -151,15 +157,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_fallback.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_host_name_max.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -448,152 +445,41 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
       <Filter>src\core\lib\debug</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\channel_connectivity.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_plugin.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\connector.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_proxy.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_factory.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_registry.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\parse_address.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper_registry.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.c">
-      <Filter>src\core\ext\filters\client_channel</Filter>
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-      <Filter>src\core\ext\filters\client_channel</Filter>
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-      <Filter>src\core\ext\filters\client_channel</Filter>
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-      <Filter>src\core\ext\filters\client_channel</Filter>
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-      <Filter>src\core\ext\filters\client_channel</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\alpn\alpn.c">
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-      <Filter>src\core\ext\filters\http\server</Filter>
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h">
+      <Filter>include\grpc\support</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h">
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@@ -704,131 +590,347 @@
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.h">
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.h">
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-      <Filter>src\core\ext\filters\client_channel</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.h">
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+      <Filter>src\core\lib\surface</Filter>
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+      <Filter>src\core\lib\surface</Filter>
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+      <Filter>src\core\lib\surface</Filter>
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+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.h">
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+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
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+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.h">
+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\http2_errors.h">
+      <Filter>src\core\lib\transport</Filter>
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+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.h">
+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\service_config.h">
+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.h">
+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h">
+      <Filter>src\core\lib\transport</Filter>
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+      <Filter>src\core\lib\transport</Filter>
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@@ -845,6 +947,9 @@
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diff --git a/vsprojects/vcxproj/grpc_test_util_unsecure/grpc_test_util_unsecure.vcxproj b/vsprojects/vcxproj/grpc_test_util_unsecure/grpc_test_util_unsecure.vcxproj
deleted file mode 100644
index c92f0d1237..0000000000
--- a/vsprojects/vcxproj/grpc_test_util_unsecure/grpc_test_util_unsecure.vcxproj
+++ /dev/null
@@ -1,635 +0,0 @@
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diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 945ca2f3d7..08c1e78e8f 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -258,6 +258,17 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\compression_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\connectivity_state.h" />
@@ -277,65 +288,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_windows.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h" />
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_settings.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\incoming_metadata.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\internal.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\stream_map.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\varint.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\alpn\alpn.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\client\http_client_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\message_compress\message_compress_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\server\http_server_filter.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\chttp2_connector.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\connector.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_proxy.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_factory.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_registry.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\parse_address.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper_registry.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_registry.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h" />
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@@ -347,6 +302,8 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\httpcli.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\parser.h" />
@@ -365,7 +322,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname.h" />
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@@ -374,7 +330,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\load_file.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\lockfree_event.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\nameser.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\polling_entity.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset.h" />
@@ -422,7 +377,6 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\alarm_internal.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call_test_only.h" />
@@ -451,6 +405,51 @@
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     <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport_impl.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\trace.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_ping.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_settings.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_window_update.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_encoder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\http2_settings.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\huffsyms.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\incoming_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\internal.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\stream_map.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\varint.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\alpn\alpn.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\client\http_client_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\message_compress\message_compress_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\http\server\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\client\chttp2_connector.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\client_channel_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\connector.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_connect_handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\http_proxy.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy_registry.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\parse_address.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\proxy_mapper_registry.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_registry.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\inproc\inproc_transport.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_ev_driver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_wrapper.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver\fake\fake_resolver.h" />
@@ -462,6 +461,10 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy\grpclb\grpclb_client_stats.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy\grpclb\load_balancer_api.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\lb_policy\grpclb\proto\grpc\lb\v1\load_balancer.pb.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\census\aggregation.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\census\base_resources.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\census\census_interface.h" />
@@ -510,6 +513,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\httpcli.c">
@@ -550,12 +557,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_fallback.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_host_name_max.c">
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
@@ -760,8 +761,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\flow_control.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index deb3433168..d9a5914e65 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -37,6 +37,12 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\stream_compression.c">
       <Filter>src\core\lib\compression</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
       <Filter>src\core\lib\http</Filter>
     </ClCompile>
@@ -97,15 +103,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_fallback.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_host_name_max.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\gethostname_sysconf.c">
-      <Filter>src\core\lib\iomgr</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -412,9 +409,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.c">
       <Filter>src\core\ext\transport\chttp2\transport</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\flow_control.c">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.c">
       <Filter>src\core\ext\transport\chttp2\transport</Filter>
     </ClCompile>
@@ -684,6 +678,39 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
+      <Filter>include\grpc</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h">
+      <Filter>include\grpc\support</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\byte_buffer_reader.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -741,179 +768,11 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_windows.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h">
-      <Filter>include\grpc</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\support\workaround_list.h">
-      <Filter>include\grpc\support</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\census.h">
       <Filter>include\grpc</Filter>
     </ClInclude>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\chttp2_transport.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
-    </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_data.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_goaway.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\frame_rst_stream.h">
-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\hpack_table.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\resolver_factory.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\retry_throttle.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\subchannel_index.h">
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\client_channel\uri_parser.h">
-      <Filter>src\core\ext\filters\client_channel</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\filters\deadline\deadline_filter.h">
-      <Filter>src\core\ext\filters\deadline</Filter>
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-    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\inproc\inproc_transport.h">
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@@ -947,6 +806,12 @@
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       <Filter>src\core\lib\compression</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats.h">
+      <Filter>src\core\lib\debug</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\stats_data.h">
+      <Filter>src\core\lib\debug</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h">
       <Filter>src\core\lib\http</Filter>
     </ClInclude>
@@ -1001,9 +866,6 @@
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-      <Filter>src\core\lib\iomgr</Filter>
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@@ -1028,9 +890,6 @@
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-      <Filter>src\core\lib\iomgr</Filter>
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@@ -1172,9 +1031,6 @@
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-      <Filter>src\core\lib\surface</Filter>
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@@ -1259,6 +1115,141 @@
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+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_decoder.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\transport\bin_encoder.h">
+      <Filter>src\core\ext\transport\chttp2\transport</Filter>
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deleted file mode 100644
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index e2b0d038a6..0000000000
--- a/vsprojects/vcxproj/test/sequential_connectivity_test/sequential_connectivity_test.vcxproj.filters
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deleted file mode 100644
index 0ebdd98817..0000000000
--- a/vsprojects/vcxproj/test/server_builder_plugin_test/server_builder_plugin_test.vcxproj
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deleted file mode 100644
index 629b913fc6..0000000000
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deleted file mode 100644
index 1b140dc96f..0000000000
--- a/vsprojects/vcxproj/test/server_builder_test/server_builder_test.vcxproj
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