Merge branch 'master' of github.com:google/grpc into docker

22 files changed, 1282 insertions, 333 deletions

diff --git a/INSTALL b/INSTALL
index b7c1d46884..e3c05707db 100644
--- a/INSTALL
+++ b/INSTALL
@@ -14,10 +14,14 @@ A typical unix installation won't require any more steps than running:
   $ make
   # make install
 
-You don't need anything else than GNU Make and gcc. Under a Debian or
-Ubuntu system, this should boil down to the following package:
+You don't need anything else than GNU Make, gcc and autotools. Under a Debian
+or Ubuntu system, this should boil down to the following packages:
 
-  # apt-get install build-essential python-all-dev python-virtualenv
+  # apt-get install build-essential autoconf libtool
+
+Building the python wrapper requires the following:
+
+  # apt-get install python-all-dev python-virtualenv
 
 
 *******************************
@@ -68,33 +72,23 @@ Compiling and running grpc plain-C tests dont't require any more dependency.
 
 
 Compiling and running grpc C++ tests depend on protobuf 3.0.0, gtest and
-gflags. Although gflags and protobuf are provided in third_party, you will
-need to manually install these dependencies on your system to run these tests.
+gflags. Although gflags is provided in third_party, you will need to manually
+install that dependency on your system to run these tests.
 
 Under a Debian or Ubuntu system, you can install the gtests and gflags packages
 using apt-get:
 
   # apt-get install libgflags-dev libgtest-dev
 
-However, protobuf 3.0.0 isn't in a debian package yet: you'll need to compile
-and install it from the sources in the third_party. Note that if you already
-have the protobuf and protoc packages installed on your system, they will most
-likely interfere, and you'll need to uninstall them first.
+However, protobuf 3.0.0 isn't in a debian package yet, but the Makefile will
+automatically try and compile the one present in third_party if you cloned the
+repository recursively, and that it detects your system is lacking it.
 
 Compiling and installing protobuf 3.0.0 requires a few more dependencies in
-itself, notably the autoconf suite, curl, and unzip. If you have apt-get, you
-can install these dependencies this way:
-
-  # apt-get install unzip curl autoconf libtool
+itself, notably the autoconf suite. If you have apt-get, you can install
+these dependencies this way:
 
-Then, you can build and install protobuf 3.0.0:
-
-  $ cd third_party/protobuf
-  $ ./autogen.sh
-  $ ./configure
-  $ make
-  # make install
-  # ldconfig
+  # apt-get install autoconf libtool
 
 
 A word on OpenSSL
diff --git a/Makefile b/Makefile
index 74e855fe6d..4e22616460 100644
--- a/Makefile
+++ b/Makefile
@@ -132,8 +132,6 @@ else
 LIBS = rt m z pthread
 LDFLAGS += -pthread
 endif
-LIBSXX = protobuf
-LIBS_PROTOC = protoc protobuf
 
 ifneq ($(wildcard /usr/src/gtest/src/gtest-all.cc),)
 GTEST_LIB = /usr/src/gtest/src/gtest-all.cc -I/usr/src/gtest
@@ -157,7 +155,6 @@ CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
 LDFLAGS += $(ARCH_FLAGS)
 LDLIBS += $(addprefix -l, $(LIBS))
 LDLIBSXX += $(addprefix -l, $(LIBSXX))
-HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
 
 HOST_CPPFLAGS = $(CPPFLAGS)
 HOST_CFLAGS = $(CFLAGS)
@@ -188,6 +185,8 @@ endif
 OPENSSL_ALPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/openssl-alpn.c -lssl -lcrypto -ldl $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/zlib.c -lz $(LDFLAGS)
 PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/perftools.c -lprofiler $(LDFLAGS)
+PROTOBUF_CHECK_CMD = $(CXX) $(CXXFLAGS) $(CPPFLAGS) -o /dev/null test/build/protobuf.cc -lprotobuf $(LDFLAGS)
+PROTOC_CHECK_CMD = protoc --version | grep -q libprotoc.3
 
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_PERFTOOLS = $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -200,12 +199,16 @@ endif
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN = $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 HAS_SYSTEM_ZLIB = $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
+HAS_SYSTEM_PROTOBUF = $(shell $(PROTOBUF_CHECK_CMD) 2> /dev/null && echo true || echo false)
 else
 # override system libraries if the config requires a custom compiled library
 HAS_SYSTEM_OPENSSL_ALPN = false
 HAS_SYSTEM_ZLIB = false
+HAS_SYSTEM_PROTOBUF = false
 endif
 
+HAS_VALID_PROTOC = $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
+
 ifeq ($(wildcard third_party/openssl/ssl/ssl.h),)
 HAS_EMBEDDED_OPENSSL_ALPN = false
 else
@@ -218,11 +221,20 @@ else
 HAS_EMBEDDED_ZLIB = true
 endif
 
+ifeq ($(wildcard third_party/protobuf/src/google/protobuf/descriptor.pb.h),)
+HAS_EMBEDDED_PROTOBUF = false
+ifneq ($(HAS_VALID_PROTOC),true)
+NO_PROTOC = true
+endif
+else
+HAS_EMBEDDED_PROTOBUF = true
+endif
+
 ifeq ($(HAS_SYSTEM_ZLIB),false)
 ifeq ($(HAS_EMBEDDED_ZLIB),true)
 ZLIB_DEP = libs/$(CONFIG)/zlib/libz.a
 CPPFLAGS += -Ithird_party/zlib
-LDFLAGS += -Lthird_party/zlib
+LDFLAGS += -Llibs/$(CONFIG)/zlib
 else
 DEP_MISSING += zlib
 endif
@@ -244,6 +256,24 @@ endif
 
 LDLIBS_SECURE += $(addprefix -l, $(LIBS_SECURE))
 
+ifeq ($(HAS_SYSTEM_PROTOBUF),false)
+ifeq ($(HAS_EMBEDDED_PROTOBUF),true)
+PROTOBUF_DEP = libs/$(CONFIG)/protobuf/libprotobuf.a
+CPPFLAGS += -Ithird_party/protobuf/src
+LDFLAGS += -Llibs/$(CONFIG)/protobuf
+PROTOC = bins/$(CONFIG)/protobuf/protoc
+else
+NO_PROTOBUF = true
+endif
+else
+endif
+
+LIBS_PROTOBUF = protobuf
+LIBS_PROTOC = protoc protobuf
+
+LDLIBS_PROTOBUF += $(addprefix -l, $(LIBS_PROTOBUF))
+HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
+
 ifeq ($(MAKECMDGOALS),clean)
 NO_DEPS = true
 endif
@@ -287,6 +317,10 @@ endif
 
 openssl_dep_error: openssl_dep_message git_update stop
 
+protobuf_dep_error: protobuf_dep_message git_update stop
+
+protoc_dep_error: protoc_dep_message git_update stop
+
 openssl_dep_message:
 	@echo
 	@echo "DEPENDENCY ERROR"
@@ -301,6 +335,34 @@ openssl_dep_message:
 	@echo "  make run_dep_checks"
 	@echo
 
+protobuf_dep_message:
+	@echo
+	@echo "DEPENDENCY ERROR"
+	@echo
+	@echo "The target you are trying to run requires protobuf 3.0.0+"
+	@echo "Your system doesn't have it, and neither does the third_party directory."
+	@echo
+	@echo "Please consult INSTALL to get more information."
+	@echo
+	@echo "If you need information about why these tests failed, run:"
+	@echo
+	@echo "  make run_dep_checks"
+	@echo
+
+protoc_dep_message:
+	@echo
+	@echo "DEPENDENCY ERROR"
+	@echo
+	@echo "The target you are trying to run requires protobuf-compiler 3.0.0+"
+	@echo "Your system doesn't have it, and neither does the third_party directory."
+	@echo
+	@echo "Please consult INSTALL to get more information."
+	@echo
+	@echo "If you need information about why these tests failed, run:"
+	@echo
+	@echo "  make run_dep_checks"
+	@echo
+
 stop:
 	@false
 
@@ -405,6 +467,7 @@ chttp2_fake_security_census_simple_request_test: bins/$(CONFIG)/chttp2_fake_secu
 chttp2_fake_security_disappearing_server_test: bins/$(CONFIG)/chttp2_fake_security_disappearing_server_test
 chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test
 chttp2_fake_security_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test
+chttp2_fake_security_empty_batch_test: bins/$(CONFIG)/chttp2_fake_security_empty_batch_test
 chttp2_fake_security_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test
 chttp2_fake_security_invoke_large_request_test: bins/$(CONFIG)/chttp2_fake_security_invoke_large_request_test
 chttp2_fake_security_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test
@@ -452,6 +515,7 @@ chttp2_fullstack_census_simple_request_test: bins/$(CONFIG)/chttp2_fullstack_cen
 chttp2_fullstack_disappearing_server_test: bins/$(CONFIG)/chttp2_fullstack_disappearing_server_test
 chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test
 chttp2_fullstack_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test
+chttp2_fullstack_empty_batch_test: bins/$(CONFIG)/chttp2_fullstack_empty_batch_test
 chttp2_fullstack_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test
 chttp2_fullstack_invoke_large_request_test: bins/$(CONFIG)/chttp2_fullstack_invoke_large_request_test
 chttp2_fullstack_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test
@@ -499,6 +563,7 @@ chttp2_simple_ssl_fullstack_census_simple_request_test: bins/$(CONFIG)/chttp2_si
 chttp2_simple_ssl_fullstack_disappearing_server_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_test
 chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test
 chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test
+chttp2_simple_ssl_fullstack_empty_batch_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test
 chttp2_simple_ssl_fullstack_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_test
 chttp2_simple_ssl_fullstack_invoke_large_request_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_test
 chttp2_simple_ssl_fullstack_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_test
@@ -546,6 +611,7 @@ chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test: bins/$(CONFI
 chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test
 chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test
 chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test
+chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test
 chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test
 chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test
 chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test
@@ -593,6 +659,7 @@ chttp2_socket_pair_census_simple_request_test: bins/$(CONFIG)/chttp2_socket_pair
 chttp2_socket_pair_disappearing_server_test: bins/$(CONFIG)/chttp2_socket_pair_disappearing_server_test
 chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test
 chttp2_socket_pair_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_test
+chttp2_socket_pair_empty_batch_test: bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test
 chttp2_socket_pair_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_test
 chttp2_socket_pair_invoke_large_request_test: bins/$(CONFIG)/chttp2_socket_pair_invoke_large_request_test
 chttp2_socket_pair_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_test
@@ -640,6 +707,7 @@ chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test: bins/$(CONFIG)
 chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test
 chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test
 chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test
+chttp2_socket_pair_one_byte_at_a_time_empty_batch_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test
 chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test
 chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test
 chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test: bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test
@@ -682,6 +750,9 @@ chttp2_socket_pair_one_byte_at_a_time_writes_done_hangs_with_pending_read_legacy
 run_dep_checks:
 	$(OPENSSL_ALPN_CHECK_CMD) || true
 	$(ZLIB_CHECK_CMD) || true
+	$(PERFTOOLS_CHECK_CMD) || true
+	$(PROTOBUF_CHECK_CMD) || true
+	$(PROTOC_CHECK_CMD) || true
 
 libs/$(CONFIG)/zlib/libz.a:
 	$(E) "[MAKE]    Building zlib"
@@ -703,6 +774,21 @@ endif
 	$(Q)mkdir -p libs/$(CONFIG)/openssl
 	$(Q)cp third_party/openssl/libssl.a third_party/openssl/libcrypto.a libs/$(CONFIG)/openssl
 
+third_party/protobuf/configure:
+	$(E) "[AUTOGEN] Preparing protobuf"
+	$(Q)(cd third_party/protobuf ; autoreconf -f -i -Wall,no-obsolete)
+
+libs/$(CONFIG)/protobuf/libprotobuf.a: third_party/protobuf/configure
+	$(E) "[MAKE]    Building protobuf"
+	$(Q)(cd third_party/protobuf ; CC="$(CC)" CXX="$(CXX)" LDFLAGS="$(LDFLAGS_$(CONFIG)) -g" CXXFLAGS="-DLANG_CXX11 -std=c++11" CPPFLAGS="$(CPPFLAGS_$(CONFIG)) -g" ./configure --disable-shared --enable-static)
+	$(Q)$(MAKE) -C third_party/protobuf clean
+	$(Q)$(MAKE) -C third_party/protobuf
+	$(Q)mkdir -p libs/$(CONFIG)/protobuf
+	$(Q)mkdir -p bins/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/.libs/libprotoc.a libs/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/.libs/libprotobuf.a libs/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/protoc bins/$(CONFIG)/protobuf
+
 static: static_c static_cxx
 
 static_c:  libs/$(CONFIG)/libgpr.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgrpc_csharp_ext.a libs/$(CONFIG)/libgrpc_unsecure.a
@@ -717,13 +803,13 @@ shared_cxx:  libs/$(CONFIG)/libgrpc++.$(SHARED_EXT)
 
 privatelibs: privatelibs_c privatelibs_cxx
 
-privatelibs_c:  libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a libs/$(CONFIG)/libend2end_fixture_chttp2_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair.a libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair_one_byte_at_a_time.a libs/$(CONFIG)/libend2end_test_cancel_after_accept.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_and_writes_closed.a libs/$(CONFIG)/libend2end_test_cancel_after_invoke.a libs/$(CONFIG)/libend2end_test_cancel_before_invoke.a libs/$(CONFIG)/libend2end_test_cancel_in_a_vacuum.a libs/$(CONFIG)/libend2end_test_census_simple_request.a libs/$(CONFIG)/libend2end_test_disappearing_server.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_inflight_calls.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_tags.a libs/$(CONFIG)/libend2end_test_graceful_server_shutdown.a libs/$(CONFIG)/libend2end_test_invoke_large_request.a libs/$(CONFIG)/libend2end_test_max_concurrent_streams.a libs/$(CONFIG)/libend2end_test_no_op.a libs/$(CONFIG)/libend2end_test_ping_pong_streaming.a libs/$(CONFIG)/libend2end_test_request_response_with_binary_metadata_and_payload.a libs/$(CONFIG)/libend2end_test_request_response_with_metadata_and_payload.a libs/$(CONFIG)/libend2end_test_request_response_with_payload.a libs/$(CONFIG)/libend2end_test_request_with_large_metadata.a libs/$(CONFIG)/libend2end_test_request_with_payload.a libs/$(CONFIG)/libend2end_test_simple_delayed_request.a libs/$(CONFIG)/libend2end_test_simple_request.a libs/$(CONFIG)/libend2end_test_thread_stress.a libs/$(CONFIG)/libend2end_test_writes_done_hangs_with_pending_read.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_legacy.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_and_writes_closed_legacy.a libs/$(CONFIG)/libend2end_test_cancel_after_invoke_legacy.a libs/$(CONFIG)/libend2end_test_cancel_before_invoke_legacy.a libs/$(CONFIG)/libend2end_test_cancel_in_a_vacuum_legacy.a libs/$(CONFIG)/libend2end_test_census_simple_request_legacy.a libs/$(CONFIG)/libend2end_test_disappearing_server_legacy.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_inflight_calls_legacy.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_tags_legacy.a libs/$(CONFIG)/libend2end_test_graceful_server_shutdown_legacy.a libs/$(CONFIG)/libend2end_test_invoke_large_request_legacy.a libs/$(CONFIG)/libend2end_test_max_concurrent_streams_legacy.a libs/$(CONFIG)/libend2end_test_no_op_legacy.a libs/$(CONFIG)/libend2end_test_ping_pong_streaming_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_binary_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_trailing_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_with_large_metadata_legacy.a libs/$(CONFIG)/libend2end_test_request_with_payload_legacy.a libs/$(CONFIG)/libend2end_test_simple_delayed_request_legacy.a libs/$(CONFIG)/libend2end_test_simple_request_legacy.a libs/$(CONFIG)/libend2end_test_thread_stress_legacy.a libs/$(CONFIG)/libend2end_test_writes_done_hangs_with_pending_read_legacy.a libs/$(CONFIG)/libend2end_certs.a
+privatelibs_c:  libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a libs/$(CONFIG)/libend2end_fixture_chttp2_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair.a libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair_one_byte_at_a_time.a libs/$(CONFIG)/libend2end_test_cancel_after_accept.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_and_writes_closed.a libs/$(CONFIG)/libend2end_test_cancel_after_invoke.a libs/$(CONFIG)/libend2end_test_cancel_before_invoke.a libs/$(CONFIG)/libend2end_test_cancel_in_a_vacuum.a libs/$(CONFIG)/libend2end_test_census_simple_request.a libs/$(CONFIG)/libend2end_test_disappearing_server.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_inflight_calls.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_tags.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_test_graceful_server_shutdown.a libs/$(CONFIG)/libend2end_test_invoke_large_request.a libs/$(CONFIG)/libend2end_test_max_concurrent_streams.a libs/$(CONFIG)/libend2end_test_no_op.a libs/$(CONFIG)/libend2end_test_ping_pong_streaming.a libs/$(CONFIG)/libend2end_test_request_response_with_binary_metadata_and_payload.a libs/$(CONFIG)/libend2end_test_request_response_with_metadata_and_payload.a libs/$(CONFIG)/libend2end_test_request_response_with_payload.a libs/$(CONFIG)/libend2end_test_request_with_large_metadata.a libs/$(CONFIG)/libend2end_test_request_with_payload.a libs/$(CONFIG)/libend2end_test_simple_delayed_request.a libs/$(CONFIG)/libend2end_test_simple_request.a libs/$(CONFIG)/libend2end_test_thread_stress.a libs/$(CONFIG)/libend2end_test_writes_done_hangs_with_pending_read.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_legacy.a libs/$(CONFIG)/libend2end_test_cancel_after_accept_and_writes_closed_legacy.a libs/$(CONFIG)/libend2end_test_cancel_after_invoke_legacy.a libs/$(CONFIG)/libend2end_test_cancel_before_invoke_legacy.a libs/$(CONFIG)/libend2end_test_cancel_in_a_vacuum_legacy.a libs/$(CONFIG)/libend2end_test_census_simple_request_legacy.a libs/$(CONFIG)/libend2end_test_disappearing_server_legacy.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_inflight_calls_legacy.a libs/$(CONFIG)/libend2end_test_early_server_shutdown_finishes_tags_legacy.a libs/$(CONFIG)/libend2end_test_graceful_server_shutdown_legacy.a libs/$(CONFIG)/libend2end_test_invoke_large_request_legacy.a libs/$(CONFIG)/libend2end_test_max_concurrent_streams_legacy.a libs/$(CONFIG)/libend2end_test_no_op_legacy.a libs/$(CONFIG)/libend2end_test_ping_pong_streaming_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_binary_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_response_with_trailing_metadata_and_payload_legacy.a libs/$(CONFIG)/libend2end_test_request_with_large_metadata_legacy.a libs/$(CONFIG)/libend2end_test_request_with_payload_legacy.a libs/$(CONFIG)/libend2end_test_simple_delayed_request_legacy.a libs/$(CONFIG)/libend2end_test_simple_request_legacy.a libs/$(CONFIG)/libend2end_test_thread_stress_legacy.a libs/$(CONFIG)/libend2end_test_writes_done_hangs_with_pending_read_legacy.a libs/$(CONFIG)/libend2end_certs.a
 
 privatelibs_cxx:  libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libtips_client_lib.a
 
 buildtests: buildtests_c buildtests_cxx
 
-buildtests_c: privatelibs_c bins/$(CONFIG)/alarm_heap_test bins/$(CONFIG)/alarm_list_test bins/$(CONFIG)/alarm_test bins/$(CONFIG)/alpn_test bins/$(CONFIG)/bin_encoder_test bins/$(CONFIG)/census_hash_table_test bins/$(CONFIG)/census_statistics_multiple_writers_circular_buffer_test bins/$(CONFIG)/census_statistics_multiple_writers_test bins/$(CONFIG)/census_statistics_performance_test bins/$(CONFIG)/census_statistics_quick_test bins/$(CONFIG)/census_statistics_small_log_test bins/$(CONFIG)/census_stub_test bins/$(CONFIG)/census_window_stats_test bins/$(CONFIG)/chttp2_status_conversion_test bins/$(CONFIG)/chttp2_stream_encoder_test bins/$(CONFIG)/chttp2_stream_map_test bins/$(CONFIG)/chttp2_transport_end2end_test bins/$(CONFIG)/dualstack_socket_test bins/$(CONFIG)/echo_client bins/$(CONFIG)/echo_server bins/$(CONFIG)/echo_test bins/$(CONFIG)/fd_posix_test bins/$(CONFIG)/fling_client bins/$(CONFIG)/fling_server bins/$(CONFIG)/fling_stream_test bins/$(CONFIG)/fling_test bins/$(CONFIG)/gpr_cancellable_test bins/$(CONFIG)/gpr_cmdline_test bins/$(CONFIG)/gpr_env_test bins/$(CONFIG)/gpr_file_test bins/$(CONFIG)/gpr_histogram_test bins/$(CONFIG)/gpr_host_port_test bins/$(CONFIG)/gpr_log_test bins/$(CONFIG)/gpr_slice_buffer_test bins/$(CONFIG)/gpr_slice_test bins/$(CONFIG)/gpr_string_test bins/$(CONFIG)/gpr_sync_test bins/$(CONFIG)/gpr_thd_test bins/$(CONFIG)/gpr_time_test bins/$(CONFIG)/gpr_useful_test bins/$(CONFIG)/grpc_base64_test bins/$(CONFIG)/grpc_byte_buffer_reader_test bins/$(CONFIG)/grpc_channel_stack_test bins/$(CONFIG)/grpc_completion_queue_test bins/$(CONFIG)/grpc_credentials_test bins/$(CONFIG)/grpc_json_token_test bins/$(CONFIG)/grpc_stream_op_test bins/$(CONFIG)/hpack_parser_test bins/$(CONFIG)/hpack_table_test bins/$(CONFIG)/httpcli_format_request_test bins/$(CONFIG)/httpcli_parser_test bins/$(CONFIG)/httpcli_test bins/$(CONFIG)/json_rewrite bins/$(CONFIG)/json_rewrite_test bins/$(CONFIG)/json_test bins/$(CONFIG)/lame_client_test bins/$(CONFIG)/message_compress_test bins/$(CONFIG)/metadata_buffer_test bins/$(CONFIG)/murmur_hash_test bins/$(CONFIG)/no_server_test bins/$(CONFIG)/poll_kick_posix_test bins/$(CONFIG)/resolve_address_test bins/$(CONFIG)/secure_endpoint_test bins/$(CONFIG)/sockaddr_utils_test bins/$(CONFIG)/tcp_client_posix_test bins/$(CONFIG)/tcp_posix_test bins/$(CONFIG)/tcp_server_posix_test bins/$(CONFIG)/time_averaged_stats_test bins/$(CONFIG)/time_test bins/$(CONFIG)/timeout_encoding_test bins/$(CONFIG)/transport_metadata_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test bins/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test bins/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_fake_security_census_simple_request_test bins/$(CONFIG)/chttp2_fake_security_disappearing_server_test bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_fake_security_invoke_large_request_test bins/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test bins/$(CONFIG)/chttp2_fake_security_no_op_test bins/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test bins/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test bins/$(CONFIG)/chttp2_fake_security_request_with_payload_test bins/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test bins/$(CONFIG)/chttp2_fake_security_simple_request_test bins/$(CONFIG)/chttp2_fake_security_thread_stress_test bins/$(CONFIG)/chttp2_fake_security_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_fake_security_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_fake_security_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_fake_security_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_fake_security_no_op_legacy_test bins/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_fake_security_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_fake_security_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_fake_security_simple_request_legacy_test bins/$(CONFIG)/chttp2_fake_security_thread_stress_legacy_test bins/$(CONFIG)/chttp2_fake_security_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_test bins/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_test bins/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_fullstack_census_simple_request_test bins/$(CONFIG)/chttp2_fullstack_disappearing_server_test bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_fullstack_invoke_large_request_test bins/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test bins/$(CONFIG)/chttp2_fullstack_no_op_test bins/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_payload_test bins/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_test bins/$(CONFIG)/chttp2_fullstack_request_with_payload_test bins/$(CONFIG)/chttp2_fullstack_simple_delayed_request_test bins/$(CONFIG)/chttp2_fullstack_simple_request_test bins/$(CONFIG)/chttp2_fullstack_thread_stress_test bins/$(CONFIG)/chttp2_fullstack_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_fullstack_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_fullstack_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_fullstack_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_fullstack_no_op_legacy_test bins/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_fullstack_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_fullstack_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_fullstack_simple_request_legacy_test bins/$(CONFIG)/chttp2_fullstack_thread_stress_legacy_test bins/$(CONFIG)/chttp2_fullstack_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_before_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_census_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_no_op_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_ping_pong_streaming_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_large_metadata_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_delayed_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_thread_stress_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_no_op_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_thread_stress_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_no_op_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_thread_stress_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_legacy_test 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bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_no_op_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_ping_pong_streaming_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_large_metadata_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_delayed_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_thread_stress_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_no_op_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_thread_stress_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_fullstack_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_no_op_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_request_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_thread_stress_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_no_op_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_simple_request_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_thread_stress_legacy_test bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_test bins/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_test bins/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_socket_pair_census_simple_request_test bins/$(CONFIG)/chttp2_socket_pair_disappearing_server_test bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test bins/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_socket_pair_invoke_large_request_test bins/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_test bins/$(CONFIG)/chttp2_socket_pair_no_op_test bins/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_test bins/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_test bins/$(CONFIG)/chttp2_socket_pair_request_with_payload_test bins/$(CONFIG)/chttp2_socket_pair_simple_delayed_request_test bins/$(CONFIG)/chttp2_socket_pair_simple_request_test bins/$(CONFIG)/chttp2_socket_pair_thread_stress_test bins/$(CONFIG)/chttp2_socket_pair_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_socket_pair_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_socket_pair_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_socket_pair_no_op_legacy_test bins/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_socket_pair_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_simple_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_thread_stress_legacy_test bins/$(CONFIG)/chttp2_socket_pair_writes_done_hangs_with_pending_read_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_thread_stress_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_writes_done_hangs_with_pending_read_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_thread_stress_legacy_test bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_writes_done_hangs_with_pending_read_legacy_test
 
 buildtests_cxx: privatelibs_cxx bins/$(CONFIG)/channel_arguments_test bins/$(CONFIG)/credentials_test bins/$(CONFIG)/end2end_test bins/$(CONFIG)/interop_client bins/$(CONFIG)/interop_server bins/$(CONFIG)/qps_client bins/$(CONFIG)/qps_server bins/$(CONFIG)/status_test bins/$(CONFIG)/sync_client_async_server_test bins/$(CONFIG)/thread_pool_test bins/$(CONFIG)/tips_client bins/$(CONFIG)/tips_publisher_test bins/$(CONFIG)/tips_subscriber_test
 
@@ -878,6 +964,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fake_security_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test || ( echo test chttp2_fake_security_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_fake_security_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_fake_security_empty_batch_test || ( echo test chttp2_fake_security_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fake_security_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test || ( echo test chttp2_fake_security_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fake_security_invoke_large_request_test"
@@ -972,6 +1060,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fullstack_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test || ( echo test chttp2_fullstack_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_fullstack_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_fullstack_empty_batch_test || ( echo test chttp2_fullstack_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fullstack_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test || ( echo test chttp2_fullstack_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_fullstack_invoke_large_request_test"
@@ -1066,6 +1156,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test || ( echo test chttp2_simple_ssl_fullstack_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_simple_ssl_fullstack_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test || ( echo test chttp2_simple_ssl_fullstack_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_fullstack_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_fullstack_graceful_server_shutdown_test || ( echo test chttp2_simple_ssl_fullstack_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_fullstack_invoke_large_request_test"
@@ -1160,6 +1252,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test || ( echo test chttp2_simple_ssl_with_oauth2_fullstack_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test || ( echo test chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test || ( echo test chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_simple_ssl_with_oauth2_fullstack_invoke_large_request_test"
@@ -1254,6 +1348,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_test || ( echo test chttp2_socket_pair_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_socket_pair_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test || ( echo test chttp2_socket_pair_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_test || ( echo test chttp2_socket_pair_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_invoke_large_request_test"
@@ -1348,6 +1444,8 @@ test_c: buildtests_c
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test || ( echo test chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test || ( echo test chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_test failed ; exit 1 )
+	$(E) "[RUN]     Testing chttp2_socket_pair_one_byte_at_a_time_empty_batch_test"
+	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test || ( echo test chttp2_socket_pair_one_byte_at_a_time_empty_batch_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test"
 	$(Q) ./bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test || ( echo test chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test failed ; exit 1 )
 	$(E) "[RUN]     Testing chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_test"
@@ -1498,55 +1596,95 @@ ifeq ($(CONFIG),opt)
 	$(Q) $(STRIP) libs/$(CONFIG)/libgrpc++.$(SHARED_EXT)
 endif
 
-gens/examples/tips/empty.pb.cc: examples/tips/empty.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/examples/tips/empty.pb.cc: protoc_dep_error
+else
+gens/examples/tips/empty.pb.cc: examples/tips/empty.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/examples/tips/label.pb.cc: examples/tips/label.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/examples/tips/label.pb.cc: protoc_dep_error
+else
+gens/examples/tips/label.pb.cc: examples/tips/label.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/examples/tips/pubsub.pb.cc: examples/tips/pubsub.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/examples/tips/pubsub.pb.cc: protoc_dep_error
+else
+gens/examples/tips/pubsub.pb.cc: examples/tips/pubsub.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/interop/empty.pb.cc: test/cpp/interop/empty.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/interop/empty.pb.cc: protoc_dep_error
+else
+gens/test/cpp/interop/empty.pb.cc: test/cpp/interop/empty.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/interop/messages.pb.cc: test/cpp/interop/messages.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/interop/messages.pb.cc: protoc_dep_error
+else
+gens/test/cpp/interop/messages.pb.cc: test/cpp/interop/messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/interop/test.pb.cc: test/cpp/interop/test.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/interop/test.pb.cc: protoc_dep_error
+else
+gens/test/cpp/interop/test.pb.cc: test/cpp/interop/test.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/qps/qpstest.pb.cc: test/cpp/qps/qpstest.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/qps/qpstest.pb.cc: protoc_dep_error
+else
+gens/test/cpp/qps/qpstest.pb.cc: test/cpp/qps/qpstest.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/util/echo.pb.cc: test/cpp/util/echo.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/util/echo.pb.cc: protoc_dep_error
+else
+gens/test/cpp/util/echo.pb.cc: test/cpp/util/echo.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/util/echo_duplicate.pb.cc: test/cpp/util/echo_duplicate.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/util/echo_duplicate.pb.cc: protoc_dep_error
+else
+gens/test/cpp/util/echo_duplicate.pb.cc: test/cpp/util/echo_duplicate.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
-gens/test/cpp/util/messages.pb.cc: test/cpp/util/messages.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/test/cpp/util/messages.pb.cc: protoc_dep_error
+else
+gens/test/cpp/util/messages.pb.cc: test/cpp/util/messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
 
 objs/$(CONFIG)/%.o : %.c
@@ -1767,7 +1905,6 @@ else
 endif
 endif
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBGPR_OBJS:.o=.dep)
 endif
@@ -1822,7 +1959,11 @@ libs/$(CONFIG)/libgpr_test_util.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/util/test_config.c: $(OPENSSL_DEP)
 endif
 
@@ -1838,7 +1979,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -1986,7 +2126,11 @@ endif
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 src/core/security/auth.c: $(OPENSSL_DEP)
 src/core/security/base64.c: $(OPENSSL_DEP)
 src/core/security/credentials.c: $(OPENSSL_DEP)
@@ -2136,7 +2280,6 @@ else
 endif
 endif
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -2278,7 +2421,11 @@ endif
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 src/csharp/ext/grpc_csharp_ext.c: $(OPENSSL_DEP)
 endif
 
@@ -2311,7 +2458,6 @@ else
 endif
 endif
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -2349,7 +2495,11 @@ libs/$(CONFIG)/libgrpc_test_util.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/cq_verifier.c: $(OPENSSL_DEP)
 test/core/end2end/data/prod_roots_certs.c: $(OPENSSL_DEP)
 test/core/end2end/data/server1_cert.c: $(OPENSSL_DEP)
@@ -2376,7 +2526,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -2536,7 +2685,6 @@ else
 endif
 endif
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBGRPC_UNSECURE_OBJS:.o=.dep)
 endif
@@ -2700,7 +2848,24 @@ endif
 
 else
 
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+libs/$(CONFIG)/libgrpc++.a: protobuf_dep_error
+
+ifeq ($(SYSTEM),MINGW32)
+libs/$(CONFIG)/grpc++.$(SHARED_EXT): protobuf_dep_error
+else
+libs/$(CONFIG)/libgrpc++.$(SHARED_EXT): protobuf_dep_error
+endif
+
+else
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 src/cpp/client/channel.cc: $(OPENSSL_DEP)
 src/cpp/client/channel_arguments.cc: $(OPENSSL_DEP)
 src/cpp/client/client_context.cc: $(OPENSSL_DEP)
@@ -2723,7 +2888,7 @@ src/cpp/util/status.cc: $(OPENSSL_DEP)
 src/cpp/util/time.cc: $(OPENSSL_DEP)
 endif
 
-libs/$(CONFIG)/libgrpc++.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC++_OBJS)
+libs/$(CONFIG)/libgrpc++.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_OBJS)
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f libs/$(CONFIG)/libgrpc++.a
@@ -2752,6 +2917,7 @@ else
 endif
 endif
 
+endif
 
 endif
 
@@ -2802,7 +2968,19 @@ libs/$(CONFIG)/libgrpc++_test_util.a: openssl_dep_error
 
 else
 
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+libs/$(CONFIG)/libgrpc++_test_util.a: protobuf_dep_error
+
+
+else
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/cpp/util/messages.proto: $(OPENSSL_DEP)
 test/cpp/util/echo.proto: $(OPENSSL_DEP)
 test/cpp/util/echo_duplicate.proto: $(OPENSSL_DEP)
@@ -2810,7 +2988,7 @@ test/cpp/end2end/async_test_server.cc: $(OPENSSL_DEP)
 test/cpp/util/create_test_channel.cc: $(OPENSSL_DEP)
 endif
 
-libs/$(CONFIG)/libgrpc++_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC++_TEST_UTIL_OBJS)
+libs/$(CONFIG)/libgrpc++_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_TEST_UTIL_OBJS)
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f libs/$(CONFIG)/libgrpc++_test_util.a
@@ -2822,6 +3000,7 @@ endif
 
 
 
+endif
 
 endif
 
@@ -2857,7 +3036,19 @@ libs/$(CONFIG)/libtips_client_lib.a: openssl_dep_error
 
 else
 
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+libs/$(CONFIG)/libtips_client_lib.a: protobuf_dep_error
+
+
+else
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 examples/tips/label.proto: $(OPENSSL_DEP)
 examples/tips/empty.proto: $(OPENSSL_DEP)
 examples/tips/pubsub.proto: $(OPENSSL_DEP)
@@ -2865,7 +3056,7 @@ examples/tips/publisher.cc: $(OPENSSL_DEP)
 examples/tips/subscriber.cc: $(OPENSSL_DEP)
 endif
 
-libs/$(CONFIG)/libtips_client_lib.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBTIPS_CLIENT_LIB_OBJS)
+libs/$(CONFIG)/libtips_client_lib.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBTIPS_CLIENT_LIB_OBJS)
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f libs/$(CONFIG)/libtips_client_lib.a
@@ -2877,6 +3068,7 @@ endif
 
 
 
+endif
 
 endif
 
@@ -2908,7 +3100,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_fake_security.c: $(OPENSSL_DEP)
 endif
 
@@ -2924,7 +3120,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -2951,7 +3146,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_fullstack.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_fullstack.c: $(OPENSSL_DEP)
 endif
 
@@ -2967,7 +3166,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -2994,7 +3192,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a: openssl_dep_err
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c: $(OPENSSL_DEP)
 endif
 
@@ -3010,7 +3212,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -3037,7 +3238,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a: ope
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c: $(OPENSSL_DEP)
 endif
 
@@ -3053,7 +3258,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -3080,7 +3284,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_socket_pair.c: $(OPENSSL_DEP)
 endif
 
@@ -3096,7 +3304,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -3123,7 +3330,11 @@ libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair_one_byte_at_a_time.a: opens
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c: $(OPENSSL_DEP)
 endif
 
@@ -3139,7 +3350,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -3169,7 +3379,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_ACCEPT_OBJS:.o=.dep)
 endif
@@ -3195,7 +3404,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_ACCEPT_AND_WRITES_CLOSED_OBJS:.o=.dep)
 endif
@@ -3221,7 +3429,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_INVOKE_OBJS:.o=.dep)
 endif
@@ -3247,7 +3454,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_BEFORE_INVOKE_OBJS:.o=.dep)
 endif
@@ -3273,7 +3479,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_IN_A_VACUUM_OBJS:.o=.dep)
 endif
@@ -3299,7 +3504,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CENSUS_SIMPLE_REQUEST_OBJS:.o=.dep)
 endif
@@ -3325,7 +3529,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_DISAPPEARING_SERVER_OBJS:.o=.dep)
 endif
@@ -3351,7 +3554,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_EARLY_SERVER_SHUTDOWN_FINISHES_INFLIGHT_CALLS_OBJS:.o=.dep)
 endif
@@ -3377,7 +3579,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_EARLY_SERVER_SHUTDOWN_FINISHES_TAGS_OBJS:.o=.dep)
 endif
@@ -3385,6 +3586,32 @@ endif
 objs/$(CONFIG)/test/core/end2end/tests/early_server_shutdown_finishes_tags.o: 
 
 
+LIBEND2END_TEST_EMPTY_BATCH_SRC = \
+    test/core/end2end/tests/empty_batch.c \
+
+
+LIBEND2END_TEST_EMPTY_BATCH_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBEND2END_TEST_EMPTY_BATCH_SRC))))
+
+libs/$(CONFIG)/libend2end_test_empty_batch.a: $(ZLIB_DEP) $(LIBEND2END_TEST_EMPTY_BATCH_OBJS)
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f libs/$(CONFIG)/libend2end_test_empty_batch.a
+	$(Q) $(AR) rcs libs/$(CONFIG)/libend2end_test_empty_batch.a $(LIBEND2END_TEST_EMPTY_BATCH_OBJS)
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib libs/$(CONFIG)/libend2end_test_empty_batch.a 
+endif
+
+
+
+
+
+ifneq ($(NO_DEPS),true)
+-include $(LIBEND2END_TEST_EMPTY_BATCH_OBJS:.o=.dep)
+endif
+
+objs/$(CONFIG)/test/core/end2end/tests/empty_batch.o: 
+
+
 LIBEND2END_TEST_GRACEFUL_SERVER_SHUTDOWN_SRC = \
     test/core/end2end/tests/graceful_server_shutdown.c \
 
@@ -3403,7 +3630,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_GRACEFUL_SERVER_SHUTDOWN_OBJS:.o=.dep)
 endif
@@ -3429,7 +3655,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_INVOKE_LARGE_REQUEST_OBJS:.o=.dep)
 endif
@@ -3455,7 +3680,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_MAX_CONCURRENT_STREAMS_OBJS:.o=.dep)
 endif
@@ -3481,7 +3705,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_NO_OP_OBJS:.o=.dep)
 endif
@@ -3507,7 +3730,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_PING_PONG_STREAMING_OBJS:.o=.dep)
 endif
@@ -3533,7 +3755,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_BINARY_METADATA_AND_PAYLOAD_OBJS:.o=.dep)
 endif
@@ -3559,7 +3780,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_METADATA_AND_PAYLOAD_OBJS:.o=.dep)
 endif
@@ -3585,7 +3805,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_PAYLOAD_OBJS:.o=.dep)
 endif
@@ -3611,7 +3830,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_WITH_LARGE_METADATA_OBJS:.o=.dep)
 endif
@@ -3637,7 +3855,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_WITH_PAYLOAD_OBJS:.o=.dep)
 endif
@@ -3663,7 +3880,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_SIMPLE_DELAYED_REQUEST_OBJS:.o=.dep)
 endif
@@ -3689,7 +3905,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_SIMPLE_REQUEST_OBJS:.o=.dep)
 endif
@@ -3715,7 +3930,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_THREAD_STRESS_OBJS:.o=.dep)
 endif
@@ -3741,7 +3955,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_WRITES_DONE_HANGS_WITH_PENDING_READ_OBJS:.o=.dep)
 endif
@@ -3767,7 +3980,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_ACCEPT_LEGACY_OBJS:.o=.dep)
 endif
@@ -3793,7 +4005,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_ACCEPT_AND_WRITES_CLOSED_LEGACY_OBJS:.o=.dep)
 endif
@@ -3819,7 +4030,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_AFTER_INVOKE_LEGACY_OBJS:.o=.dep)
 endif
@@ -3845,7 +4055,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_BEFORE_INVOKE_LEGACY_OBJS:.o=.dep)
 endif
@@ -3871,7 +4080,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CANCEL_IN_A_VACUUM_LEGACY_OBJS:.o=.dep)
 endif
@@ -3897,7 +4105,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_CENSUS_SIMPLE_REQUEST_LEGACY_OBJS:.o=.dep)
 endif
@@ -3923,7 +4130,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_DISAPPEARING_SERVER_LEGACY_OBJS:.o=.dep)
 endif
@@ -3949,7 +4155,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_EARLY_SERVER_SHUTDOWN_FINISHES_INFLIGHT_CALLS_LEGACY_OBJS:.o=.dep)
 endif
@@ -3975,7 +4180,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_EARLY_SERVER_SHUTDOWN_FINISHES_TAGS_LEGACY_OBJS:.o=.dep)
 endif
@@ -4001,7 +4205,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_GRACEFUL_SERVER_SHUTDOWN_LEGACY_OBJS:.o=.dep)
 endif
@@ -4027,7 +4230,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_INVOKE_LARGE_REQUEST_LEGACY_OBJS:.o=.dep)
 endif
@@ -4053,7 +4255,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_MAX_CONCURRENT_STREAMS_LEGACY_OBJS:.o=.dep)
 endif
@@ -4079,7 +4280,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_NO_OP_LEGACY_OBJS:.o=.dep)
 endif
@@ -4105,7 +4305,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_PING_PONG_STREAMING_LEGACY_OBJS:.o=.dep)
 endif
@@ -4131,7 +4330,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_BINARY_METADATA_AND_PAYLOAD_LEGACY_OBJS:.o=.dep)
 endif
@@ -4157,7 +4355,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_METADATA_AND_PAYLOAD_LEGACY_OBJS:.o=.dep)
 endif
@@ -4183,7 +4380,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_PAYLOAD_LEGACY_OBJS:.o=.dep)
 endif
@@ -4209,7 +4405,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_RESPONSE_WITH_TRAILING_METADATA_AND_PAYLOAD_LEGACY_OBJS:.o=.dep)
 endif
@@ -4235,7 +4430,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_WITH_LARGE_METADATA_LEGACY_OBJS:.o=.dep)
 endif
@@ -4261,7 +4455,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_REQUEST_WITH_PAYLOAD_LEGACY_OBJS:.o=.dep)
 endif
@@ -4287,7 +4480,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_SIMPLE_DELAYED_REQUEST_LEGACY_OBJS:.o=.dep)
 endif
@@ -4313,7 +4505,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_SIMPLE_REQUEST_LEGACY_OBJS:.o=.dep)
 endif
@@ -4339,7 +4530,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_THREAD_STRESS_LEGACY_OBJS:.o=.dep)
 endif
@@ -4365,7 +4555,6 @@ endif
 
 
 
-
 ifneq ($(NO_DEPS),true)
 -include $(LIBEND2END_TEST_WRITES_DONE_HANGS_WITH_PENDING_READ_LEGACY_OBJS:.o=.dep)
 endif
@@ -4391,7 +4580,11 @@ libs/$(CONFIG)/libend2end_certs.a: openssl_dep_error
 
 else
 
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 test/core/end2end/data/test_root_cert.c: $(OPENSSL_DEP)
 test/core/end2end/data/prod_roots_certs.c: $(OPENSSL_DEP)
 test/core/end2end/data/server1_cert.c: $(OPENSSL_DEP)
@@ -4410,7 +4603,6 @@ endif
 
 
 
-
 endif
 
 ifneq ($(NO_SECURE),true)
@@ -6832,7 +7024,7 @@ else
 bins/$(CONFIG)/channel_arguments_test: $(CHANNEL_ARGUMENTS_TEST_OBJS) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(CHANNEL_ARGUMENTS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/channel_arguments_test
+	$(Q) $(LDXX) $(LDFLAGS) $(CHANNEL_ARGUMENTS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/channel_arguments_test
 
 endif
 
@@ -6853,10 +7045,21 @@ CPP_PLUGIN_SRC = \
 
 CPP_PLUGIN_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CPP_PLUGIN_SRC))))
 
-bins/$(CONFIG)/cpp_plugin: $(CPP_PLUGIN_OBJS)
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins if you don't have protobuf 3.0.0+.
+
+bins/$(CONFIG)/cpp_plugin: protobuf_dep_error
+
+else
+
+bins/$(CONFIG)/cpp_plugin: $(PROTOBUF_DEP) $(CPP_PLUGIN_OBJS)
 	$(E) "[HOSTLD]  Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(HOST_LDXX) $(HOST_LDFLAGS) $(CPP_PLUGIN_OBJS) $(HOST_LDLIBSXX) $(HOST_LDLIBS) $(HOST_LDLIBS_PROTOC) -o bins/$(CONFIG)/cpp_plugin
+	$(Q) $(HOST_LDXX) $(HOST_LDFLAGS) $(CPP_PLUGIN_OBJS) $(HOST_LDLIBSXX) $(HOST_LDLIBS_PROTOC) $(HOST_LDLIBS) $(HOST_LDLIBS_PROTOC) -o bins/$(CONFIG)/cpp_plugin
+
+endif
 
 objs/$(CONFIG)/src/compiler/cpp_generator.o: 
 objs/$(CONFIG)/src/compiler/cpp_plugin.o: 
@@ -6884,7 +7087,7 @@ else
 bins/$(CONFIG)/credentials_test: $(CREDENTIALS_TEST_OBJS) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(CREDENTIALS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/credentials_test
+	$(Q) $(LDXX) $(LDFLAGS) $(CREDENTIALS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/credentials_test
 
 endif
 
@@ -6915,7 +7118,7 @@ else
 bins/$(CONFIG)/end2end_test: $(END2END_TEST_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(END2END_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/end2end_test
+	$(Q) $(LDXX) $(LDFLAGS) $(END2END_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/end2end_test
 
 endif
 
@@ -6949,7 +7152,7 @@ else
 bins/$(CONFIG)/interop_client: $(INTEROP_CLIENT_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(INTEROP_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/interop_client
+	$(Q) $(LDXX) $(LDFLAGS) $(INTEROP_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/interop_client
 
 endif
 
@@ -6986,7 +7189,7 @@ else
 bins/$(CONFIG)/interop_server: $(INTEROP_SERVER_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(INTEROP_SERVER_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/interop_server
+	$(Q) $(LDXX) $(LDFLAGS) $(INTEROP_SERVER_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/interop_server
 
 endif
 
@@ -7021,7 +7224,7 @@ else
 bins/$(CONFIG)/qps_client: $(QPS_CLIENT_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(QPS_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/qps_client
+	$(Q) $(LDXX) $(LDFLAGS) $(QPS_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/qps_client
 
 endif
 
@@ -7054,7 +7257,7 @@ else
 bins/$(CONFIG)/qps_server: $(QPS_SERVER_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(QPS_SERVER_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/qps_server
+	$(Q) $(LDXX) $(LDFLAGS) $(QPS_SERVER_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/qps_server
 
 endif
 
@@ -7076,10 +7279,21 @@ RUBY_PLUGIN_SRC = \
 
 RUBY_PLUGIN_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(RUBY_PLUGIN_SRC))))
 
-bins/$(CONFIG)/ruby_plugin: $(RUBY_PLUGIN_OBJS)
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins if you don't have protobuf 3.0.0+.
+
+bins/$(CONFIG)/ruby_plugin: protobuf_dep_error
+
+else
+
+bins/$(CONFIG)/ruby_plugin: $(PROTOBUF_DEP) $(RUBY_PLUGIN_OBJS)
 	$(E) "[HOSTLD]  Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(HOST_LDXX) $(HOST_LDFLAGS) $(RUBY_PLUGIN_OBJS) $(HOST_LDLIBSXX) $(HOST_LDLIBS) $(HOST_LDLIBS_PROTOC) -o bins/$(CONFIG)/ruby_plugin
+	$(Q) $(HOST_LDXX) $(HOST_LDFLAGS) $(RUBY_PLUGIN_OBJS) $(HOST_LDLIBSXX) $(HOST_LDLIBS_PROTOC) $(HOST_LDLIBS) $(HOST_LDLIBS_PROTOC) -o bins/$(CONFIG)/ruby_plugin
+
+endif
 
 objs/$(CONFIG)/src/compiler/ruby_generator.o: 
 objs/$(CONFIG)/src/compiler/ruby_plugin.o: 
@@ -7107,7 +7321,7 @@ else
 bins/$(CONFIG)/status_test: $(STATUS_TEST_OBJS) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(STATUS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/status_test
+	$(Q) $(LDXX) $(LDFLAGS) $(STATUS_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/status_test
 
 endif
 
@@ -7138,7 +7352,7 @@ else
 bins/$(CONFIG)/sync_client_async_server_test: $(SYNC_CLIENT_ASYNC_SERVER_TEST_OBJS) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(SYNC_CLIENT_ASYNC_SERVER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/sync_client_async_server_test
+	$(Q) $(LDXX) $(LDFLAGS) $(SYNC_CLIENT_ASYNC_SERVER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/sync_client_async_server_test
 
 endif
 
@@ -7169,7 +7383,7 @@ else
 bins/$(CONFIG)/thread_pool_test: $(THREAD_POOL_TEST_OBJS) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(THREAD_POOL_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/thread_pool_test
+	$(Q) $(LDXX) $(LDFLAGS) $(THREAD_POOL_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/thread_pool_test
 
 endif
 
@@ -7200,7 +7414,7 @@ else
 bins/$(CONFIG)/tips_client: $(TIPS_CLIENT_OBJS) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_client
+	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_CLIENT_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_client
 
 endif
 
@@ -7231,7 +7445,7 @@ else
 bins/$(CONFIG)/tips_publisher_test: $(TIPS_PUBLISHER_TEST_OBJS) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_PUBLISHER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_publisher_test
+	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_PUBLISHER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_publisher_test
 
 endif
 
@@ -7262,7 +7476,7 @@ else
 bins/$(CONFIG)/tips_subscriber_test: $(TIPS_SUBSCRIBER_TEST_OBJS) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_SUBSCRIBER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_subscriber_test
+	$(Q) $(LDXX) $(LDFLAGS) $(TIPS_SUBSCRIBER_TEST_OBJS) $(GTEST_LIB) libs/$(CONFIG)/libtips_client_lib.a libs/$(CONFIG)/libgrpc++_test_util.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc++.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/tips_subscriber_test
 
 endif
 
@@ -7538,6 +7752,35 @@ endif
 endif
 
 
+CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_fake_security_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_fake_security_empty_batch_test: $(CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_fake_security.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_fake_security_empty_batch_test
+
+endif
+
+
+deps_chttp2_fake_security_empty_batch_test: $(CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_FAKE_SECURITY_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_FAKE_SECURITY_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_FAKE_SECURITY_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_FAKE_SECURITY_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
@@ -8901,6 +9144,35 @@ endif
 endif
 
 
+CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_fullstack_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_fullstack_empty_batch_test: $(CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_fullstack_empty_batch_test
+
+endif
+
+
+deps_chttp2_fullstack_empty_batch_test: $(CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
@@ -10264,6 +10536,35 @@ endif
 endif
 
 
+CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test: $(CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_simple_ssl_fullstack_empty_batch_test
+
+endif
+
+
+deps_chttp2_simple_ssl_fullstack_empty_batch_test: $(CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_SIMPLE_SSL_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_SIMPLE_SSL_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_SIMPLE_SSL_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SIMPLE_SSL_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
@@ -11627,6 +11928,35 @@ endif
 endif
 
 
+CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test: $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_simple_ssl_with_oauth2_fullstack.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test
+
+endif
+
+
+deps_chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test: $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SIMPLE_SSL_WITH_OAUTH2_FULLSTACK_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
@@ -12990,6 +13320,35 @@ endif
 endif
 
 
+CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test: $(CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_socket_pair_empty_batch_test
+
+endif
+
+
+deps_chttp2_socket_pair_empty_batch_test: $(CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_SOCKET_PAIR_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_SOCKET_PAIR_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_SOCKET_PAIR_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SOCKET_PAIR_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
@@ -14353,6 +14712,35 @@ endif
 endif
 
 
+CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_SRC = \
+
+CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_SRC))))
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL with ALPN.
+
+bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test: openssl_dep_error
+
+else
+
+bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test: $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair_one_byte_at_a_time.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_OBJS) libs/$(CONFIG)/libend2end_fixture_chttp2_socket_pair_one_byte_at_a_time.a libs/$(CONFIG)/libend2end_test_empty_batch.a libs/$(CONFIG)/libend2end_certs.a libs/$(CONFIG)/libgrpc_test_util.a libs/$(CONFIG)/libgrpc.a libs/$(CONFIG)/libgpr_test_util.a libs/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o bins/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_test
+
+endif
+
+
+deps_chttp2_socket_pair_one_byte_at_a_time_empty_batch_test: $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_EMPTY_BATCH_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC = \
 
 CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_GRACEFUL_SERVER_SHUTDOWN_TEST_OBJS = $(addprefix objs/$(CONFIG)/, $(addsuffix .o, $(basename $(CHTTP2_SOCKET_PAIR_ONE_BYTE_AT_A_TIME_GRACEFUL_SERVER_SHUTDOWN_TEST_SRC))))
diff --git a/include/grpc/support/port_platform.h b/include/grpc/support/port_platform.h
index 9d4bfbee5e..fbaefe6d09 100644
--- a/include/grpc/support/port_platform.h
+++ b/include/grpc/support/port_platform.h
@@ -70,6 +70,7 @@
 #define GPR_POSIX_TIME 1
 #define GPR_GETPID_IN_UNISTD_H 1
 #elif defined(__linux__)
+#include <features.h>
 #define GPR_CPU_LINUX 1
 #define GPR_GCC_ATOMIC 1
 #define GPR_LINUX 1
@@ -78,7 +79,14 @@
 #define GPR_LINUX_EVENTFD 1
 #define GPR_POSIX_SOCKET 1
 #define GPR_POSIX_SOCKETADDR 1
+#ifdef __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 17)
 #define GPR_LINUX_ENV 1
+#endif
+#endif
+#ifndef GPR_LINUX_ENV
+#define GPR_POSIX_ENV 1
+#endif
 #define GPR_POSIX_FILE 1
 #define GPR_POSIX_STRING 1
 #define GPR_POSIX_SYNC 1
diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index c0f5742c10..58a2436937 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -991,6 +991,12 @@ grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops,
   const grpc_op *op;
   grpc_ioreq *req;
 
+  if (nops == 0) {
+    grpc_cq_begin_op(call->cq, call, GRPC_OP_COMPLETE);
+    grpc_cq_end_op_complete(call->cq, tag, call, do_nothing, NULL, GRPC_OP_OK);
+    return GRPC_CALL_OK;
+  }
+
   /* rewrite batch ops into ioreq ops */
   for (in = 0, out = 0; in < nops; in++) {
     op = &ops[in];
diff --git a/src/csharp/GrpcCore/GrpcEnvironment.cs b/src/csharp/GrpcCore/GrpcEnvironment.cs
index 201320828b..7a7ff39179 100644
--- a/src/csharp/GrpcCore/GrpcEnvironment.cs
+++ b/src/csharp/GrpcCore/GrpcEnvironment.cs
@@ -13,11 +13,11 @@ namespace Google.GRPC.Core
     {
         const int THREAD_POOL_SIZE = 1;
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_init();
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_init();
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_shutdown();
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_shutdown();
 
         static object staticLock = new object();
         static bool initCalled = false;
@@ -61,7 +61,7 @@ namespace Google.GRPC.Core
         /// </summary>
         private static void GrpcInit()
         {
-            grpc_init();
+            grpcsharp_init();
             threadPool.Start();
             // TODO: use proper logging here
             Console.WriteLine("GRPC initialized.");
@@ -73,7 +73,7 @@ namespace Google.GRPC.Core
         private static void GrpcShutdown()
         {
             threadPool.Stop();
-            grpc_shutdown();
+            grpcsharp_shutdown();
 
             // TODO: use proper logging here
             Console.WriteLine("GRPC shutdown.");
diff --git a/src/csharp/GrpcCore/Internal/CallSafeHandle.cs b/src/csharp/GrpcCore/Internal/CallSafeHandle.cs
index bbb830b355..f5973e2709 100644
--- a/src/csharp/GrpcCore/Internal/CallSafeHandle.cs
+++ b/src/csharp/GrpcCore/Internal/CallSafeHandle.cs
@@ -15,67 +15,67 @@ namespace Google.GRPC.Core.Internal
 	{
         const UInt32 GRPC_WRITE_BUFFER_HINT = 1;
 
-        [DllImport("grpc.dll")]
-        static extern CallSafeHandle grpc_channel_create_call_old(ChannelSafeHandle channel, string method, string host, Timespec deadline);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern CallSafeHandle grpcsharp_channel_create_call_old(ChannelSafeHandle channel, string method, string host, Timespec deadline);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_add_metadata(CallSafeHandle call, IntPtr metadata, UInt32 flags);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_add_metadata(CallSafeHandle call, IntPtr metadata, UInt32 flags);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_invoke_old(CallSafeHandle call, CompletionQueueSafeHandle cq, IntPtr metadataReadTag, IntPtr finishedTag, UInt32 flags);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_invoke_old(CallSafeHandle call, CompletionQueueSafeHandle cq, IntPtr metadataReadTag, IntPtr finishedTag, UInt32 flags);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_call_invoke_old")]
-        static extern GRPCCallError grpc_call_invoke_old_CALLBACK(CallSafeHandle call, CompletionQueueSafeHandle cq,
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_invoke_old")]
+        static extern GRPCCallError grpcsharp_call_invoke_old_CALLBACK(CallSafeHandle call, CompletionQueueSafeHandle cq,
                                                               [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate metadataReadCallback, 
                                                               [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate finishedCallback, 
                                                               UInt32 flags);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_server_accept_old(CallSafeHandle call, CompletionQueueSafeHandle completionQueue, IntPtr finishedTag);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_server_accept_old(CallSafeHandle call, CompletionQueueSafeHandle completionQueue, IntPtr finishedTag);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_call_server_accept_old")]
-        static extern GRPCCallError grpc_call_server_accept_old_CALLBACK(CallSafeHandle call, CompletionQueueSafeHandle completionQueue, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate finishedCallback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_server_accept_old")]
+        static extern GRPCCallError grpcsharp_call_server_accept_old_CALLBACK(CallSafeHandle call, CompletionQueueSafeHandle completionQueue, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate finishedCallback);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_server_end_initial_metadata_old(CallSafeHandle call, UInt32 flags);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_server_end_initial_metadata_old(CallSafeHandle call, UInt32 flags);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_cancel(CallSafeHandle call);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_cancel(CallSafeHandle call);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_start_write_status_old(CallSafeHandle call, StatusCode statusCode, string statusMessage, IntPtr tag);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_start_write_status_old(CallSafeHandle call, StatusCode statusCode, string statusMessage, IntPtr tag);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_call_start_write_status_old")]
-        static extern GRPCCallError grpc_call_start_write_status_old_CALLBACK(CallSafeHandle call, StatusCode statusCode, string statusMessage, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_start_write_status_old")]
+        static extern GRPCCallError grpcsharp_call_start_write_status_old_CALLBACK(CallSafeHandle call, StatusCode statusCode, string statusMessage, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_writes_done_old(CallSafeHandle call, IntPtr tag);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_writes_done_old(CallSafeHandle call, IntPtr tag);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_call_writes_done_old")]
-        static extern GRPCCallError grpc_call_writes_done_old_CALLBACK(CallSafeHandle call, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_writes_done_old")]
+        static extern GRPCCallError grpcsharp_call_writes_done_old_CALLBACK(CallSafeHandle call, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
 
-        [DllImport("grpc.dll")]
-        static extern GRPCCallError grpc_call_start_read_old(CallSafeHandle call, IntPtr tag);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern GRPCCallError grpcsharp_call_start_read_old(CallSafeHandle call, IntPtr tag);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_call_start_read_old")]
-        static extern GRPCCallError grpc_call_start_read_old_CALLBACK(CallSafeHandle call, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_start_read_old")]
+        static extern GRPCCallError grpcsharp_call_start_read_old_CALLBACK(CallSafeHandle call, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern void grpc_call_start_write_from_copied_buffer(CallSafeHandle call,
+        static extern void grpcsharp_call_start_write_from_copied_buffer(CallSafeHandle call,
                                                                     byte[] buffer, UIntPtr length,
                                                                     IntPtr tag, UInt32 flags);
 
-        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpc_call_start_write_from_copied_buffer")]
-        static extern void grpc_call_start_write_from_copied_buffer_CALLBACK(CallSafeHandle call,
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_call_start_write_from_copied_buffer")]
+        static extern void grpcsharp_call_start_write_from_copied_buffer_CALLBACK(CallSafeHandle call,
                                                                              byte[] buffer, UIntPtr length,
                                                                              [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback,
                                                                              UInt32 flags);
 
-		[DllImport("grpc.dll")]
-		static extern void grpc_call_destroy(IntPtr call);
+		[DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_call_destroy(IntPtr call);
 
         private CallSafeHandle()
         {
@@ -86,87 +86,87 @@ namespace Google.GRPC.Core.Internal
         /// </summary>
         public static CallSafeHandle Create(ChannelSafeHandle channel, string method, string host, Timespec deadline)
         {
-            return grpc_channel_create_call_old(channel, method, host, deadline);
+            return grpcsharp_channel_create_call_old(channel, method, host, deadline);
         }
 
         public void Invoke(CompletionQueueSafeHandle cq, IntPtr metadataReadTag, IntPtr finishedTag, bool buffered)
         {   
-            AssertCallOk(grpc_call_invoke_old(this, cq, metadataReadTag, finishedTag, GetFlags(buffered)));
+            AssertCallOk(grpcsharp_call_invoke_old(this, cq, metadataReadTag, finishedTag, GetFlags(buffered)));
         }
 
         public void Invoke(CompletionQueueSafeHandle cq, bool buffered, EventCallbackDelegate metadataReadCallback, EventCallbackDelegate finishedCallback)
         {   
-            AssertCallOk(grpc_call_invoke_old_CALLBACK(this, cq, metadataReadCallback, finishedCallback, GetFlags(buffered)));
+            AssertCallOk(grpcsharp_call_invoke_old_CALLBACK(this, cq, metadataReadCallback, finishedCallback, GetFlags(buffered)));
         }
 
         public void ServerAccept(CompletionQueueSafeHandle cq, IntPtr finishedTag)
         {
-            AssertCallOk(grpc_call_server_accept_old(this, cq, finishedTag));
+            AssertCallOk(grpcsharp_call_server_accept_old(this, cq, finishedTag));
         }
 
         public void ServerAccept(CompletionQueueSafeHandle cq, EventCallbackDelegate callback)
         {
-            AssertCallOk(grpc_call_server_accept_old_CALLBACK(this, cq, callback));
+            AssertCallOk(grpcsharp_call_server_accept_old_CALLBACK(this, cq, callback));
         }
 
         public void ServerEndInitialMetadata(UInt32 flags)
         {
-            AssertCallOk(grpc_call_server_end_initial_metadata_old(this, flags));
+            AssertCallOk(grpcsharp_call_server_end_initial_metadata_old(this, flags));
         }
 
         public void StartWrite(byte[] payload, IntPtr tag, bool buffered)
         {
-            grpc_call_start_write_from_copied_buffer(this, payload, new UIntPtr((ulong) payload.Length), tag, GetFlags(buffered));
+            grpcsharp_call_start_write_from_copied_buffer(this, payload, new UIntPtr((ulong) payload.Length), tag, GetFlags(buffered));
         }
 
         public void StartWrite(byte[] payload, bool buffered, EventCallbackDelegate callback)
         {
-            grpc_call_start_write_from_copied_buffer_CALLBACK(this, payload, new UIntPtr((ulong) payload.Length), callback, GetFlags(buffered));
+            grpcsharp_call_start_write_from_copied_buffer_CALLBACK(this, payload, new UIntPtr((ulong) payload.Length), callback, GetFlags(buffered));
         }
 
         public void StartWriteStatus(Status status, IntPtr tag)
         {
-            AssertCallOk(grpc_call_start_write_status_old(this, status.StatusCode, status.Detail, tag));
+            AssertCallOk(grpcsharp_call_start_write_status_old(this, status.StatusCode, status.Detail, tag));
         }
 
         public void StartWriteStatus(Status status, EventCallbackDelegate callback)
         {
-            AssertCallOk(grpc_call_start_write_status_old_CALLBACK(this, status.StatusCode, status.Detail, callback));
+            AssertCallOk(grpcsharp_call_start_write_status_old_CALLBACK(this, status.StatusCode, status.Detail, callback));
         }
 
         public void WritesDone(IntPtr tag)
         {
-            AssertCallOk(grpc_call_writes_done_old(this, tag));
+            AssertCallOk(grpcsharp_call_writes_done_old(this, tag));
         }
 
         public void WritesDone(EventCallbackDelegate callback)
         {
-            AssertCallOk(grpc_call_writes_done_old_CALLBACK(this, callback));
+            AssertCallOk(grpcsharp_call_writes_done_old_CALLBACK(this, callback));
         }
 
         public void StartRead(IntPtr tag)
         {
-            AssertCallOk(grpc_call_start_read_old(this, tag));
+            AssertCallOk(grpcsharp_call_start_read_old(this, tag));
         }
 
         public void StartRead(EventCallbackDelegate callback)
         {
-            AssertCallOk(grpc_call_start_read_old_CALLBACK(this, callback));
+            AssertCallOk(grpcsharp_call_start_read_old_CALLBACK(this, callback));
         }
 
         public void Cancel()
         {
-            AssertCallOk(grpc_call_cancel(this));
+            AssertCallOk(grpcsharp_call_cancel(this));
         }
 
         public void CancelWithStatus(Status status)
         {
-            AssertCallOk(grpc_call_cancel_with_status(this, status.StatusCode, status.Detail));
+            AssertCallOk(grpcsharp_call_cancel_with_status(this, status.StatusCode, status.Detail));
         }
 
 		protected override bool ReleaseHandle()
 		{
-			grpc_call_destroy(handle);
+            grpcsharp_call_destroy(handle);
 			return true;
 		}
 
diff --git a/src/csharp/GrpcCore/Internal/ChannelSafeHandle.cs b/src/csharp/GrpcCore/Internal/ChannelSafeHandle.cs
index 0f38d63f98..6436f2bb31 100644
--- a/src/csharp/GrpcCore/Internal/ChannelSafeHandle.cs
+++ b/src/csharp/GrpcCore/Internal/ChannelSafeHandle.cs
@@ -10,11 +10,11 @@ namespace Google.GRPC.Core.Internal
     /// </summary>
 	internal class ChannelSafeHandle : SafeHandleZeroIsInvalid
 	{
-        [DllImport("grpc.dll")]
-        static extern ChannelSafeHandle grpc_channel_create(string target, IntPtr channelArgs);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern ChannelSafeHandle grpcsharp_channel_create(string target, IntPtr channelArgs);
 
-		[DllImport("grpc.dll")]
-		static extern void grpc_channel_destroy(IntPtr channel);
+		[DllImport("grpc_csharp_ext.dll")]
+		static extern void grpcsharp_channel_destroy(IntPtr channel);
 
         private ChannelSafeHandle()
         {
@@ -22,12 +22,12 @@ namespace Google.GRPC.Core.Internal
 
         public static ChannelSafeHandle Create(string target, IntPtr channelArgs)
         {
-            return grpc_channel_create(target, channelArgs);
+            return grpcsharp_channel_create(target, channelArgs);
         }
 
 		protected override bool ReleaseHandle()
 		{
-			grpc_channel_destroy(handle);
+			grpcsharp_channel_destroy(handle);
 			return true;
 		}
 	}
diff --git a/src/csharp/GrpcCore/Internal/CompletionQueueSafeHandle.cs b/src/csharp/GrpcCore/Internal/CompletionQueueSafeHandle.cs
index f098de6820..77d8bde375 100644
--- a/src/csharp/GrpcCore/Internal/CompletionQueueSafeHandle.cs
+++ b/src/csharp/GrpcCore/Internal/CompletionQueueSafeHandle.cs
@@ -9,23 +9,23 @@ namespace Google.GRPC.Core.Internal
     /// </summary>
 	internal class CompletionQueueSafeHandle : SafeHandleZeroIsInvalid
 	{
-        [DllImport("grpc.dll")]
-        static extern CompletionQueueSafeHandle grpc_completion_queue_create();
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern CompletionQueueSafeHandle grpcsharp_completion_queue_create();
 
-        [DllImport("grpc.dll")]
-        static extern EventSafeHandle grpc_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag, Timespec deadline);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern EventSafeHandle grpcsharp_completion_queue_pluck(CompletionQueueSafeHandle cq, IntPtr tag, Timespec deadline);
 
-        [DllImport("grpc.dll")]
-        static extern EventSafeHandle grpc_completion_queue_next(CompletionQueueSafeHandle cq, Timespec deadline);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern EventSafeHandle grpcsharp_completion_queue_next(CompletionQueueSafeHandle cq, Timespec deadline);
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_completion_queue_shutdown(CompletionQueueSafeHandle cq);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_completion_queue_shutdown(CompletionQueueSafeHandle cq);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCCompletionType grpc_completion_queue_next_with_callback(CompletionQueueSafeHandle cq);
+        static extern GRPCCompletionType grpcsharp_completion_queue_next_with_callback(CompletionQueueSafeHandle cq);
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_completion_queue_destroy(IntPtr cq);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_completion_queue_destroy(IntPtr cq);
 
         private CompletionQueueSafeHandle()
         {
@@ -33,32 +33,32 @@ namespace Google.GRPC.Core.Internal
 
         public static CompletionQueueSafeHandle Create()
         {
-            return grpc_completion_queue_create();
+            return grpcsharp_completion_queue_create();
         }
 
         public EventSafeHandle Next(Timespec deadline)
         {
-            return grpc_completion_queue_next(this, deadline);
+            return grpcsharp_completion_queue_next(this, deadline);
         }
 
         public GRPCCompletionType NextWithCallback()
         {
-            return grpc_completion_queue_next_with_callback(this);
+            return grpcsharp_completion_queue_next_with_callback(this);
         }
 
         public EventSafeHandle Pluck(IntPtr tag, Timespec deadline)
         {
-            return grpc_completion_queue_pluck(this, tag, deadline);
+            return grpcsharp_completion_queue_pluck(this, tag, deadline);
         }
 
         public void Shutdown()
         {
-            grpc_completion_queue_shutdown(this);
+            grpcsharp_completion_queue_shutdown(this);
         }
 
 		protected override bool ReleaseHandle()
         {
-            grpc_completion_queue_destroy(handle);
+            grpcsharp_completion_queue_destroy(handle);
 			return true;
 		}
 	}
diff --git a/src/csharp/GrpcCore/Internal/Event.cs b/src/csharp/GrpcCore/Internal/Event.cs
index 5853ddd570..cefe8cfbb2 100644
--- a/src/csharp/GrpcCore/Internal/Event.cs
+++ b/src/csharp/GrpcCore/Internal/Event.cs
@@ -9,84 +9,84 @@ namespace Google.GRPC.Core.Internal
     /// </summary>
     internal class EventSafeHandle : SafeHandleZeroIsInvalid
     {
-        [DllImport("grpc.dll")]
-        static extern void grpc_event_finish(IntPtr ev);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_event_finish(IntPtr ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCCompletionType grpc_event_type(EventSafeHandle ev);
+        static extern GRPCCompletionType grpcsharp_event_type(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern CallSafeHandle grpc_event_call(EventSafeHandle ev);
+        static extern CallSafeHandle grpcsharp_event_call(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCOpError grpc_event_write_accepted(EventSafeHandle ev);
+        static extern GRPCOpError grpcsharp_event_write_accepted(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCOpError grpc_event_finish_accepted(EventSafeHandle ev);
+        static extern GRPCOpError grpcsharp_event_finish_accepted(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern StatusCode grpc_event_finished_status(EventSafeHandle ev);
+        static extern StatusCode grpcsharp_event_finished_status(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_finished_details(EventSafeHandle ev);  // returns const char*
+        static extern IntPtr grpcsharp_event_finished_details(EventSafeHandle ev);  // returns const char*
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_read_length(EventSafeHandle ev);
+        static extern IntPtr grpcsharp_event_read_length(EventSafeHandle ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern void grpc_event_read_copy_to_buffer(EventSafeHandle ev, byte[] buffer, UIntPtr bufferLen);
+        static extern void grpcsharp_event_read_copy_to_buffer(EventSafeHandle ev, byte[] buffer, UIntPtr bufferLen);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_server_rpc_new_method(EventSafeHandle ev); // returns const char*
+        static extern IntPtr grpcsharp_event_server_rpc_new_method(EventSafeHandle ev); // returns const char*
 
         public GRPCCompletionType GetCompletionType()
         {
-            return grpc_event_type(this);
+            return grpcsharp_event_type(this);
         }
 
         public GRPCOpError GetWriteAccepted()
         {
-            return grpc_event_write_accepted(this);
+            return grpcsharp_event_write_accepted(this);
         }
 
         public GRPCOpError GetFinishAccepted()
         {
-            return grpc_event_finish_accepted(this);
+            return grpcsharp_event_finish_accepted(this);
         }
 
         public Status GetFinished()
         {
             // TODO: can the native method return string directly?
-            string details = Marshal.PtrToStringAnsi(grpc_event_finished_details(this));
-            return new Status(grpc_event_finished_status(this), details);
+            string details = Marshal.PtrToStringAnsi(grpcsharp_event_finished_details(this));
+            return new Status(grpcsharp_event_finished_status(this), details);
         }
 
         public byte[] GetReadData()
         {
-            IntPtr len = grpc_event_read_length(this);
+            IntPtr len = grpcsharp_event_read_length(this);
             if (len == new IntPtr(-1))
             {
                 return null;
             }
             byte[] data = new byte[(int) len];
-            grpc_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
+            grpcsharp_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
             return data;
         }
 
         public CallSafeHandle GetCall() {
-            return grpc_event_call(this);
+            return grpcsharp_event_call(this);
         }
 
         public string GetServerRpcNewMethod() {
             // TODO: can the native method return string directly?
-            return Marshal.PtrToStringAnsi(grpc_event_server_rpc_new_method(this));
+            return Marshal.PtrToStringAnsi(grpcsharp_event_server_rpc_new_method(this));
         }
 
         //TODO: client_metadata_read event type
 
         protected override bool ReleaseHandle()
         {
-            grpc_event_finish(handle);
+            grpcsharp_event_finish(handle);
             return true;
         }
     }
@@ -98,35 +98,35 @@ namespace Google.GRPC.Core.Internal
     /// </summary>
     internal class EventSafeHandleNotOwned : SafeHandleZeroIsInvalid
     {
-        [DllImport("grpc.dll")]
-        static extern void grpc_event_finish(IntPtr ev);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_event_finish(IntPtr ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCCompletionType grpc_event_type(EventSafeHandleNotOwned ev);
+        static extern GRPCCompletionType grpcsharp_event_type(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern CallSafeHandle grpc_event_call(EventSafeHandleNotOwned ev);
+        static extern CallSafeHandle grpcsharp_event_call(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCOpError grpc_event_write_accepted(EventSafeHandleNotOwned ev);
+        static extern GRPCOpError grpcsharp_event_write_accepted(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern GRPCOpError grpc_event_finish_accepted(EventSafeHandleNotOwned ev);
+        static extern GRPCOpError grpcsharp_event_finish_accepted(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern StatusCode grpc_event_finished_status(EventSafeHandleNotOwned ev);
+        static extern StatusCode grpcsharp_event_finished_status(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_finished_details(EventSafeHandleNotOwned ev);  // returns const char*
+        static extern IntPtr grpcsharp_event_finished_details(EventSafeHandleNotOwned ev);  // returns const char*
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_read_length(EventSafeHandleNotOwned ev);
+        static extern IntPtr grpcsharp_event_read_length(EventSafeHandleNotOwned ev);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern void grpc_event_read_copy_to_buffer(EventSafeHandleNotOwned ev, byte[] buffer, UIntPtr bufferLen);
+        static extern void grpcsharp_event_read_copy_to_buffer(EventSafeHandleNotOwned ev, byte[] buffer, UIntPtr bufferLen);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern IntPtr grpc_event_server_rpc_new_method(EventSafeHandleNotOwned ev); // returns const char*
+        static extern IntPtr grpcsharp_event_server_rpc_new_method(EventSafeHandleNotOwned ev); // returns const char*
 
         public EventSafeHandleNotOwned() : base(false)
         {
@@ -139,52 +139,52 @@ namespace Google.GRPC.Core.Internal
 
         public GRPCCompletionType GetCompletionType()
         {
-            return grpc_event_type(this);
+            return grpcsharp_event_type(this);
         }
 
         public GRPCOpError GetWriteAccepted()
         {
-            return grpc_event_write_accepted(this);
+            return grpcsharp_event_write_accepted(this);
         }
 
         public GRPCOpError GetFinishAccepted()
         {
-            return grpc_event_finish_accepted(this);
+            return grpcsharp_event_finish_accepted(this);
         }
 
         public Status GetFinished()
         {
             // TODO: can the native method return string directly?
-            string details = Marshal.PtrToStringAnsi(grpc_event_finished_details(this));
-            return new Status(grpc_event_finished_status(this), details);
+            string details = Marshal.PtrToStringAnsi(grpcsharp_event_finished_details(this));
+            return new Status(grpcsharp_event_finished_status(this), details);
         }
 
         public byte[] GetReadData()
         {
-            IntPtr len = grpc_event_read_length(this);
+            IntPtr len = grpcsharp_event_read_length(this);
             if (len == new IntPtr(-1))
             {
                 return null;
             }
             byte[] data = new byte[(int) len];
-            grpc_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
+            grpcsharp_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
             return data;
         }
 
         public CallSafeHandle GetCall() {
-            return grpc_event_call(this);
+            return grpcsharp_event_call(this);
         }
 
         public string GetServerRpcNewMethod() {
             // TODO: can the native method return string directly?
-            return Marshal.PtrToStringAnsi(grpc_event_server_rpc_new_method(this));
+            return Marshal.PtrToStringAnsi(grpcsharp_event_server_rpc_new_method(this));
         }
 
         //TODO: client_metadata_read event type
 
         protected override bool ReleaseHandle()
         {
-            grpc_event_finish(handle);
+            grpcsharp_event_finish(handle);
             return true;
         }
     }
diff --git a/src/csharp/GrpcCore/Internal/ServerSafeHandle.cs b/src/csharp/GrpcCore/Internal/ServerSafeHandle.cs
index d363b34f0b..391a1acd01 100644
--- a/src/csharp/GrpcCore/Internal/ServerSafeHandle.cs
+++ b/src/csharp/GrpcCore/Internal/ServerSafeHandle.cs
@@ -10,31 +10,31 @@ namespace Google.GRPC.Core.Internal
     /// </summary>
     internal sealed class ServerSafeHandle : SafeHandleZeroIsInvalid
     {
-        [DllImport("grpc.dll", EntryPoint = "grpc_server_request_call_old")]
-        static extern GRPCCallError grpc_server_request_call_old_CALLBACK(ServerSafeHandle server, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_server_request_call_old")]
+        static extern GRPCCallError grpcsharp_server_request_call_old_CALLBACK(ServerSafeHandle server, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
 
-        [DllImport("grpc.dll")]
-        static extern ServerSafeHandle grpc_server_create(CompletionQueueSafeHandle cq, IntPtr args);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern ServerSafeHandle grpcsharp_server_create(CompletionQueueSafeHandle cq, IntPtr args);
 
         // TODO: check int representation size
-        [DllImport("grpc.dll")]
-        static extern int grpc_server_add_http2_port(ServerSafeHandle server, string addr);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern int grpcsharp_server_add_http2_port(ServerSafeHandle server, string addr);
 
         // TODO: check int representation size
-        [DllImport("grpc.dll")]
-        static extern int grpc_server_add_secure_http2_port(ServerSafeHandle server, string addr);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr);
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_server_start(ServerSafeHandle server);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_server_start(ServerSafeHandle server);
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_server_shutdown(ServerSafeHandle server);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_server_shutdown(ServerSafeHandle server);
 
-        [DllImport("grpc.dll", EntryPoint = "grpc_server_shutdown_and_notify")]
-        static extern void grpc_server_shutdown_and_notify_CALLBACK(ServerSafeHandle server, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
+        [DllImport("grpc_csharp_ext.dll", EntryPoint = "grpcsharp_server_shutdown_and_notify")]
+        static extern void grpcsharp_server_shutdown_and_notify_CALLBACK(ServerSafeHandle server, [MarshalAs(UnmanagedType.FunctionPtr)] EventCallbackDelegate callback);
 
-        [DllImport("grpc.dll")]
-        static extern void grpc_server_destroy(IntPtr server);
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void grpcsharp_server_destroy(IntPtr server);
 
         private ServerSafeHandle()
         {
@@ -43,38 +43,38 @@ namespace Google.GRPC.Core.Internal
         public static ServerSafeHandle NewServer(CompletionQueueSafeHandle cq, IntPtr args)
         {
             // TODO: also grpc_secure_server_create...
-            return grpc_server_create(cq, args);
+            return grpcsharp_server_create(cq, args);
         }
 
         public int AddPort(string addr)
         {
             // TODO: also grpc_server_add_secure_http2_port...
-            return grpc_server_add_http2_port(this, addr);
+            return grpcsharp_server_add_http2_port(this, addr);
         }
 
         public void Start()
         {
-            grpc_server_start(this);
+            grpcsharp_server_start(this);
         }
 
         public void Shutdown()
         {
-            grpc_server_shutdown(this);
+            grpcsharp_server_shutdown(this);
         }
 
         public void ShutdownAndNotify(EventCallbackDelegate callback)
         {
-            grpc_server_shutdown_and_notify_CALLBACK(this, callback);
+            grpcsharp_server_shutdown_and_notify_CALLBACK(this, callback);
         }
 
         public GRPCCallError RequestCall(EventCallbackDelegate callback)
         {
-            return grpc_server_request_call_old_CALLBACK(this, callback);
+            return grpcsharp_server_request_call_old_CALLBACK(this, callback);
         }
 
         protected override bool ReleaseHandle()
         {
-            grpc_server_destroy(handle);
+            grpcsharp_server_destroy(handle);
             return true;
         }
     }
diff --git a/src/csharp/GrpcCore/Internal/Timespec.cs b/src/csharp/GrpcCore/Internal/Timespec.cs
index 5a197e121c..c45926707f 100644
--- a/src/csharp/GrpcCore/Internal/Timespec.cs
+++ b/src/csharp/GrpcCore/Internal/Timespec.cs
@@ -13,13 +13,20 @@ namespace Google.GRPC.Core.Internal
         const int nanosPerSecond = 1000 * 1000 * 1000;
         const int nanosPerTick = 100;
 
-        [DllImport("gpr.dll")]
-        static extern Timespec gpr_now();
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern Timespec gprsharp_now();
 
-		// TODO: this only works on 64bit linux, can we autoselect the right size of ints?
-		// perhaps using IntPtr would work.
-		public System.Int64 tv_sec;
-		public System.Int64 tv_nsec;
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern Timespec gprsharp_inf_future();
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern int gprsharp_sizeof_timespec();
+
+        // TODO: revisit this.
+		// NOTE: on linux 64bit  sizeof(gpr_timespec) = 16, on windows 32bit sizeof(gpr_timespec) = 8
+        // so IntPtr seems to have the right size to work on both.
+		public System.IntPtr tv_sec;
+		public System.IntPtr tv_nsec;
 
 		/// <summary>
 		/// Timespec a long time in the future.
@@ -28,8 +35,7 @@ namespace Google.GRPC.Core.Internal
 		{
 			get
 			{
-				// TODO: set correct value based on the length of the struct
-				return new Timespec { tv_sec = Int32.MaxValue, tv_nsec = 0 };
+                return gprsharp_inf_future();
 			}
 		}
 
@@ -37,7 +43,15 @@ namespace Google.GRPC.Core.Internal
         {
             get
             {
-                return gpr_now();
+                return gprsharp_now();
+            }
+        }
+
+        internal static int NativeSize
+        {
+            get
+            {
+                return gprsharp_sizeof_timespec();
             }
         }
 
@@ -54,12 +68,12 @@ namespace Google.GRPC.Core.Internal
         }
 
         public Timespec Add(TimeSpan timeSpan) {
-            long nanos = tv_nsec + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * nanosPerTick;
+            long nanos = tv_nsec.ToInt64() + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * nanosPerTick;
             long overflow_sec = (nanos > nanosPerSecond) ? 1 : 0;
 
             Timespec result;
-            result.tv_nsec = nanos % nanosPerSecond;
-            result.tv_sec = tv_sec + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec; 
+            result.tv_nsec = new IntPtr(nanos % nanosPerSecond);
+            result.tv_sec = new IntPtr(tv_sec.ToInt64() + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec); 
             return result;
         }
 	}
diff --git a/src/csharp/GrpcCoreTests/TimespecTest.cs b/src/csharp/GrpcCoreTests/TimespecTest.cs
index 484bad7ca1..cab59fa5b3 100644
--- a/src/csharp/GrpcCoreTests/TimespecTest.cs
+++ b/src/csharp/GrpcCoreTests/TimespecTest.cs
@@ -1,5 +1,6 @@
 using System;
 using NUnit.Framework;
+using System.Runtime.InteropServices;
 using Google.GRPC.Core.Internal;
 
 namespace Google.GRPC.Core.Internal.Tests
@@ -13,30 +14,42 @@ namespace Google.GRPC.Core.Internal.Tests
         }
 
         [Test]
+        public void InfFuture()
+        {
+            var timespec = Timespec.InfFuture;
+        }
+
+        [Test]
+        public void TimespecSizeIsNativeSize()
+        {
+            Assert.AreEqual(Timespec.NativeSize, Marshal.SizeOf(typeof(Timespec)));
+        }
+
+        [Test]
         public void Add()
         {
-            var t = new Timespec { tv_sec = 12345, tv_nsec = 123456789 };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(123456789) };
             var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10));
-            Assert.AreEqual(result.tv_sec, 12355);
-            Assert.AreEqual(result.tv_nsec, 123456789);
+            Assert.AreEqual(result.tv_sec, new IntPtr(12355));
+            Assert.AreEqual(result.tv_nsec, new IntPtr(123456789));
         }
 
         [Test]
         public void Add_Nanos()
         {
-            var t = new Timespec { tv_sec = 12345, tv_nsec = 123456789 };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(123456789) };
             var result = t.Add(TimeSpan.FromTicks(10));
-            Assert.AreEqual(result.tv_sec, 12345);
-            Assert.AreEqual(result.tv_nsec, 123456789 + 1000);
+            Assert.AreEqual(result.tv_sec, new IntPtr(12345));
+            Assert.AreEqual(result.tv_nsec, new IntPtr(123456789 + 1000));
         }
 
         [Test]
         public void Add_NanosOverflow()
         {
-            var t = new Timespec { tv_sec = 12345, tv_nsec = 999999999 };
+            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = new IntPtr(999999999) };
             var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10 + 10));
-            Assert.AreEqual(result.tv_sec, 12356);
-            Assert.AreEqual(result.tv_nsec, 999);
+            Assert.AreEqual(result.tv_sec, new IntPtr(12356));
+            Assert.AreEqual(result.tv_nsec, new IntPtr(999));
         }
     }
 }
diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 74d11c655b..2c4cdfa0b6 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -1,9 +1,23 @@
+#include <grpc/support/port_platform.h>
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/slice.h>
 
 #include <string.h>
 
+#ifdef GPR_WIN32
+#define GPR_EXPORT __declspec(dllexport)
+#define GPR_CALLTYPE __stdcall
+#endif
+
+#ifndef GPR_EXPORT
+#define GPR_EXPORT
+#endif
+
+#ifndef GPR_CALLTYPE
+#define GPR_CALLTYPE
+#endif
+
 grpc_byte_buffer *string_to_byte_buffer(const char *buffer, size_t len) {
   gpr_slice slice = gpr_slice_from_copied_buffer(buffer, len);
   grpc_byte_buffer *bb = grpc_byte_buffer_create(&slice, 1);
@@ -11,40 +25,119 @@ grpc_byte_buffer *string_to_byte_buffer(const char *buffer, size_t len) {
   return bb;
 }
 
-void grpc_call_start_write_from_copied_buffer(grpc_call *call,
-                                              const char *buffer, size_t len,
-                                              void *tag, gpr_uint32 flags) {
-  grpc_byte_buffer *byte_buffer = string_to_byte_buffer(buffer, len);
-  GPR_ASSERT(grpc_call_start_write_old(call, byte_buffer, tag, flags) ==
-             GRPC_CALL_OK);
-  grpc_byte_buffer_destroy(byte_buffer);
+/* Init & shutdown */
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_init(void) { grpc_init(); }
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_shutdown(void) { grpc_shutdown(); }
+
+/* Completion queue */
+
+GPR_EXPORT grpc_completion_queue *GPR_CALLTYPE
+grpcsharp_completion_queue_create(void) {
+  return grpc_completion_queue_create();
+}
+
+GPR_EXPORT grpc_event *GPR_CALLTYPE
+grpcsharp_completion_queue_next(grpc_completion_queue *cq,
+                                gpr_timespec deadline) {
+  return grpc_completion_queue_next(cq, deadline);
 }
 
-grpc_completion_type grpc_event_type(const grpc_event *event) {
+GPR_EXPORT grpc_event *GPR_CALLTYPE
+grpcsharp_completion_queue_pluck(grpc_completion_queue *cq, void *tag,
+                                 gpr_timespec deadline) {
+  return grpc_completion_queue_pluck(cq, tag, deadline);
+}
+
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_completion_queue_shutdown(grpc_completion_queue *cq) {
+  grpc_completion_queue_shutdown(cq);
+}
+
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_completion_queue_destroy(grpc_completion_queue *cq) {
+  grpc_completion_queue_destroy(cq);
+}
+
+GPR_EXPORT grpc_completion_type GPR_CALLTYPE
+grpcsharp_completion_queue_next_with_callback(grpc_completion_queue *cq) {
+  grpc_event *ev;
+  grpc_completion_type t;
+  void(GPR_CALLTYPE * callback)(grpc_event *);
+
+  ev = grpc_completion_queue_next(cq, gpr_inf_future);
+  t = ev->type;
+  if (ev->tag) {
+    /* call the callback in ev->tag */
+    /* C forbids to cast object pointers to function pointers, so
+     * we cast to intptr first.
+     */
+    callback = (void(GPR_CALLTYPE *)(grpc_event *))(gpr_intptr)ev->tag;
+    (*callback)(ev);
+  }
+  grpc_event_finish(ev);
+
+  /* return completion type to allow some handling for events that have no
+   * tag - such as GRPC_QUEUE_SHUTDOWN
+   */
+  return t;
+}
+
+/* Channel */
+
+GPR_EXPORT grpc_channel *GPR_CALLTYPE
+grpcsharp_channel_create(const char *target, const grpc_channel_args *args) {
+  return grpc_channel_create(target, args);
+}
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_destroy(grpc_channel *channel) {
+  grpc_channel_destroy(channel);
+}
+
+GPR_EXPORT grpc_call *GPR_CALLTYPE
+grpcsharp_channel_create_call_old(grpc_channel *channel, const char *method,
+                                  const char *host, gpr_timespec deadline) {
+  return grpc_channel_create_call_old(channel, method, host, deadline);
+}
+
+/* Event */
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_event_finish(grpc_event *event) {
+  grpc_event_finish(event);
+}
+
+GPR_EXPORT grpc_completion_type GPR_CALLTYPE
+grpcsharp_event_type(const grpc_event *event) {
   return event->type;
 }
 
-grpc_op_error grpc_event_write_accepted(const grpc_event *event) {
+GPR_EXPORT grpc_op_error GPR_CALLTYPE
+grpcsharp_event_write_accepted(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_WRITE_ACCEPTED);
   return event->data.invoke_accepted;
 }
 
-grpc_op_error grpc_event_finish_accepted(const grpc_event *event) {
+GPR_EXPORT grpc_op_error GPR_CALLTYPE
+grpcsharp_event_finish_accepted(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_FINISH_ACCEPTED);
   return event->data.finish_accepted;
 }
 
-grpc_status_code grpc_event_finished_status(const grpc_event *event) {
+GPR_EXPORT grpc_status_code GPR_CALLTYPE
+grpcsharp_event_finished_status(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_FINISHED);
   return event->data.finished.status;
 }
 
-const char *grpc_event_finished_details(const grpc_event *event) {
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_event_finished_details(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_FINISHED);
   return event->data.finished.details;
 }
 
-gpr_intptr grpc_event_read_length(const grpc_event *event) {
+GPR_EXPORT gpr_intptr GPR_CALLTYPE
+grpcsharp_event_read_length(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_READ);
   if (!event->data.read) {
     return -1;
@@ -56,7 +149,8 @@ gpr_intptr grpc_event_read_length(const grpc_event *event) {
  * Copies data from read event to a buffer. Fatal error occurs if
  * buffer is too small.
  */
-void grpc_event_read_copy_to_buffer(const grpc_event *event, char *buffer,
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_event_read_copy_to_buffer(const grpc_event *event, char *buffer,
                                     size_t buffer_len) {
   grpc_byte_buffer_reader *reader;
   gpr_slice slice;
@@ -77,37 +171,142 @@ void grpc_event_read_copy_to_buffer(const grpc_event *event, char *buffer,
   grpc_byte_buffer_reader_destroy(reader);
 }
 
-grpc_call *grpc_event_call(const grpc_event *event) {
+GPR_EXPORT grpc_call *GPR_CALLTYPE
+grpcsharp_event_call(const grpc_event *event) {
   /* we only allow this for newly incoming server calls. */
   GPR_ASSERT(event->type == GRPC_SERVER_RPC_NEW);
   return event->call;
 }
 
-const char *grpc_event_server_rpc_new_method(const grpc_event *event) {
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_event_server_rpc_new_method(const grpc_event *event) {
   GPR_ASSERT(event->type == GRPC_SERVER_RPC_NEW);
   return event->data.server_rpc_new.method;
 }
 
-grpc_completion_type grpc_completion_queue_next_with_callback(
-    grpc_completion_queue *cq) {
-  grpc_event *ev;
-  grpc_completion_type t;
-  void (*callback)(grpc_event *);
+/* Timespec */
 
-  ev = grpc_completion_queue_next(cq, gpr_inf_future);
-  t = ev->type;
-  if (ev->tag) {
-    /* call the callback in ev->tag */
-    /* C forbids to cast object pointers to function pointers, so
-     * we cast to intptr first.
-     */
-    callback = (void (*)(grpc_event *))(gpr_intptr)ev->tag;
-    (*callback)(ev);
-  }
-  grpc_event_finish(ev);
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_now(void) { return gpr_now(); }
 
-  /* return completion type to allow some handling for events that have no
-   * tag - such as GRPC_QUEUE_SHUTDOWN
-   */
-  return t;
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_future(void) {
+  return gpr_inf_future;
+}
+
+GPR_EXPORT gpr_int32 GPR_CALLTYPE gprsharp_sizeof_timespec(void) {
+  return sizeof(gpr_timespec);
+}
+
+/* Call */
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_add_metadata_old(grpc_call *call, grpc_metadata *metadata,
+                                gpr_uint32 flags) {
+  return grpc_call_add_metadata_old(call, metadata, flags);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_invoke_old(grpc_call *call, grpc_completion_queue *cq,
+                          void *metadata_read_tag, void *finished_tag,
+                          gpr_uint32 flags) {
+  return grpc_call_invoke_old(call, cq, metadata_read_tag, finished_tag, flags);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_server_accept_old(grpc_call *call, grpc_completion_queue *cq,
+                                 void *finished_tag) {
+  return grpc_call_server_accept_old(call, cq, finished_tag);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_server_end_initial_metadata_old(grpc_call *call,
+                                               gpr_uint32 flags) {
+  return grpc_call_server_end_initial_metadata_old(call, flags);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE grpcsharp_call_cancel(grpc_call *call) {
+  return grpc_call_cancel(call);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_cancel_with_status(grpc_call *call, grpc_status_code status,
+                                  const char *description) {
+  return grpc_call_cancel_with_status(call, status, description);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_start_write_old(grpc_call *call, grpc_byte_buffer *byte_buffer,
+                               void *tag, gpr_uint32 flags) {
+  return grpc_call_start_write_old(call, byte_buffer, tag, flags);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_start_write_status_old(grpc_call *call,
+                                      grpc_status_code status_code,
+                                      const char *status_message, void *tag) {
+  return grpc_call_start_write_status_old(call, status_code, status_message,
+                                          tag);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_writes_done_old(grpc_call *call, void *tag) {
+  return grpc_call_writes_done_old(call, tag);
+}
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_call_start_read_old(grpc_call *call, void *tag) {
+  return grpc_call_start_read_old(call, tag);
+}
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_call_destroy(grpc_call *call) {
+  grpc_call_destroy(call);
+}
+
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_call_start_write_from_copied_buffer(grpc_call *call,
+                                              const char *buffer, size_t len,
+                                              void *tag, gpr_uint32 flags) {
+  grpc_byte_buffer *byte_buffer = string_to_byte_buffer(buffer, len);
+  GPR_ASSERT(grpc_call_start_write_old(call, byte_buffer, tag, flags) ==
+             GRPC_CALL_OK);
+  grpc_byte_buffer_destroy(byte_buffer);
+}
+
+/* Server */
+
+GPR_EXPORT grpc_call_error GPR_CALLTYPE
+grpcsharp_server_request_call_old(grpc_server *server, void *tag_new) {
+  return grpc_server_request_call_old(server, tag_new);
+}
+
+GPR_EXPORT grpc_server *GPR_CALLTYPE
+grpcsharp_server_create(grpc_completion_queue *cq,
+                        const grpc_channel_args *args) {
+  return grpc_server_create(cq, args);
+}
+
+GPR_EXPORT int GPR_CALLTYPE
+grpcsharp_server_add_http2_port(grpc_server *server, const char *addr) {
+  return grpc_server_add_http2_port(server, addr);
+}
+
+GPR_EXPORT int GPR_CALLTYPE
+grpcsharp_server_add_secure_http2_port(grpc_server *server, const char *addr) {
+  return grpc_server_add_secure_http2_port(server, addr);
+}
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_start(grpc_server *server) {
+  grpc_server_start(server);
+}
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_shutdown(grpc_server *server) {
+  grpc_server_shutdown(server);
+}
+
+GPR_EXPORT void GPR_CALLTYPE
+grpcsharp_server_shutdown_and_notify(grpc_server *server, void *tag) {
+  grpc_server_shutdown_and_notify(server, tag);
+}
+
+GPR_EXPORT void GPR_CALLTYPE grpcsharp_server_destroy(grpc_server *server) {
+  grpc_server_destroy(server);
 }
diff --git a/templates/Makefile.template b/templates/Makefile.template
index c34949cf2a..c5e6d0afaf 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -149,8 +149,6 @@ else
 LIBS = rt m z pthread
 LDFLAGS += -pthread
 endif
-LIBSXX = protobuf
-LIBS_PROTOC = protoc protobuf
 
 ifneq ($(wildcard /usr/src/gtest/src/gtest-all.cc),)
 GTEST_LIB = /usr/src/gtest/src/gtest-all.cc -I/usr/src/gtest
@@ -174,7 +172,6 @@ CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
 LDFLAGS += $(ARCH_FLAGS)
 LDLIBS += $(addprefix -l, $(LIBS))
 LDLIBSXX += $(addprefix -l, $(LIBSXX))
-HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
 
 HOST_CPPFLAGS = $(CPPFLAGS)
 HOST_CFLAGS = $(CFLAGS)
@@ -205,6 +202,8 @@ endif
 OPENSSL_ALPN_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/openssl-alpn.c -lssl -lcrypto -ldl $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/zlib.c -lz $(LDFLAGS)
 PERFTOOLS_CHECK_CMD = $(CC) $(CFLAGS) $(CPPFLAGS) -o /dev/null test/build/perftools.c -lprofiler $(LDFLAGS)
+PROTOBUF_CHECK_CMD = $(CXX) $(CXXFLAGS) $(CPPFLAGS) -o /dev/null test/build/protobuf.cc -lprotobuf $(LDFLAGS)
+PROTOC_CHECK_CMD = protoc --version | grep -q libprotoc.3
 
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_PERFTOOLS = $(shell $(PERFTOOLS_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -217,12 +216,16 @@ endif
 ifndef REQUIRE_CUSTOM_LIBRARIES_$(CONFIG)
 HAS_SYSTEM_OPENSSL_ALPN = $(shell $(OPENSSL_ALPN_CHECK_CMD) 2> /dev/null && echo true || echo false)
 HAS_SYSTEM_ZLIB = $(shell $(ZLIB_CHECK_CMD) 2> /dev/null && echo true || echo false)
+HAS_SYSTEM_PROTOBUF = $(shell $(PROTOBUF_CHECK_CMD) 2> /dev/null && echo true || echo false)
 else
 # override system libraries if the config requires a custom compiled library
 HAS_SYSTEM_OPENSSL_ALPN = false
 HAS_SYSTEM_ZLIB = false
+HAS_SYSTEM_PROTOBUF = false
 endif
 
+HAS_VALID_PROTOC = $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
+
 ifeq ($(wildcard third_party/openssl/ssl/ssl.h),)
 HAS_EMBEDDED_OPENSSL_ALPN = false
 else
@@ -235,11 +238,20 @@ else
 HAS_EMBEDDED_ZLIB = true
 endif
 
+ifeq ($(wildcard third_party/protobuf/src/google/protobuf/descriptor.pb.h),)
+HAS_EMBEDDED_PROTOBUF = false
+ifneq ($(HAS_VALID_PROTOC),true)
+NO_PROTOC = true
+endif
+else
+HAS_EMBEDDED_PROTOBUF = true
+endif
+
 ifeq ($(HAS_SYSTEM_ZLIB),false)
 ifeq ($(HAS_EMBEDDED_ZLIB),true)
 ZLIB_DEP = libs/$(CONFIG)/zlib/libz.a
 CPPFLAGS += -Ithird_party/zlib
-LDFLAGS += -Lthird_party/zlib
+LDFLAGS += -Llibs/$(CONFIG)/zlib
 else
 DEP_MISSING += zlib
 endif
@@ -261,6 +273,24 @@ endif
 
 LDLIBS_SECURE += $(addprefix -l, $(LIBS_SECURE))
 
+ifeq ($(HAS_SYSTEM_PROTOBUF),false)
+ifeq ($(HAS_EMBEDDED_PROTOBUF),true)
+PROTOBUF_DEP = libs/$(CONFIG)/protobuf/libprotobuf.a
+CPPFLAGS += -Ithird_party/protobuf/src
+LDFLAGS += -Llibs/$(CONFIG)/protobuf
+PROTOC = bins/$(CONFIG)/protobuf/protoc
+else
+NO_PROTOBUF = true
+endif
+else
+endif
+
+LIBS_PROTOBUF = protobuf
+LIBS_PROTOC = protoc protobuf
+
+LDLIBS_PROTOBUF += $(addprefix -l, $(LIBS_PROTOBUF))
+HOST_LDLIBS_PROTOC += $(addprefix -l, $(LIBS_PROTOC))
+
 ifeq ($(MAKECMDGOALS),clean)
 NO_DEPS = true
 endif
@@ -316,6 +346,10 @@ endif
 
 openssl_dep_error: openssl_dep_message git_update stop
 
+protobuf_dep_error: protobuf_dep_message git_update stop
+
+protoc_dep_error: protoc_dep_message git_update stop
+
 openssl_dep_message:
 	@echo
 	@echo "DEPENDENCY ERROR"
@@ -330,6 +364,34 @@ openssl_dep_message:
 	@echo "  make run_dep_checks"
 	@echo
 
+protobuf_dep_message:
+	@echo
+	@echo "DEPENDENCY ERROR"
+	@echo
+	@echo "The target you are trying to run requires protobuf 3.0.0+"
+	@echo "Your system doesn't have it, and neither does the third_party directory."
+	@echo
+	@echo "Please consult INSTALL to get more information."
+	@echo
+	@echo "If you need information about why these tests failed, run:"
+	@echo
+	@echo "  make run_dep_checks"
+	@echo
+
+protoc_dep_message:
+	@echo
+	@echo "DEPENDENCY ERROR"
+	@echo
+	@echo "The target you are trying to run requires protobuf-compiler 3.0.0+"
+	@echo "Your system doesn't have it, and neither does the third_party directory."
+	@echo
+	@echo "Please consult INSTALL to get more information."
+	@echo
+	@echo "If you need information about why these tests failed, run:"
+	@echo
+	@echo "  make run_dep_checks"
+	@echo
+
 stop:
 	@false
 
@@ -340,6 +402,9 @@ ${tgt.name}: bins/$(CONFIG)/${tgt.name}
 run_dep_checks:
 	$(OPENSSL_ALPN_CHECK_CMD) || true
 	$(ZLIB_CHECK_CMD) || true
+	$(PERFTOOLS_CHECK_CMD) || true
+	$(PROTOBUF_CHECK_CMD) || true
+	$(PROTOC_CHECK_CMD) || true
 
 libs/$(CONFIG)/zlib/libz.a:
 	$(E) "[MAKE]    Building zlib"
@@ -361,6 +426,21 @@ endif
 	$(Q)mkdir -p libs/$(CONFIG)/openssl
 	$(Q)cp third_party/openssl/libssl.a third_party/openssl/libcrypto.a libs/$(CONFIG)/openssl
 
+third_party/protobuf/configure:
+	$(E) "[AUTOGEN] Preparing protobuf"
+	$(Q)(cd third_party/protobuf ; autoreconf -f -i -Wall,no-obsolete)
+
+libs/$(CONFIG)/protobuf/libprotobuf.a: third_party/protobuf/configure
+	$(E) "[MAKE]    Building protobuf"
+	$(Q)(cd third_party/protobuf ; CC="$(CC)" CXX="$(CXX)" LDFLAGS="$(LDFLAGS_$(CONFIG)) -g" CXXFLAGS="-DLANG_CXX11 -std=c++11" CPPFLAGS="$(CPPFLAGS_$(CONFIG)) -g" ./configure --disable-shared --enable-static)
+	$(Q)$(MAKE) -C third_party/protobuf clean
+	$(Q)$(MAKE) -C third_party/protobuf
+	$(Q)mkdir -p libs/$(CONFIG)/protobuf
+	$(Q)mkdir -p bins/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/.libs/libprotoc.a libs/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/.libs/libprotobuf.a libs/$(CONFIG)/protobuf
+	$(Q)cp third_party/protobuf/src/protoc bins/$(CONFIG)/protobuf
+
 static: static_c static_cxx
 
 static_c: \
@@ -531,10 +611,14 @@ ifeq ($(CONFIG),opt)
 endif
 
 % for p in protos:
-gens/${p}.pb.cc: ${p}.proto $(PROTOC_PLUGINS)
+ifeq ($(NO_PROTOC),true)
+gens/${p}.pb.cc: protoc_dep_error
+else
+gens/${p}.pb.cc: ${p}.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS)
 	$(E) "[PROTOC]  Generating protobuf CC file from $<"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) $(PROTOC) --cpp_out=gens --grpc_out=gens --plugin=protoc-gen-grpc=bins/$(CONFIG)/cpp_plugin $<
+endif
 
 % endfor
 
@@ -704,17 +788,60 @@ endif
 
 else
 
+% if lib.language == 'c++':
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+libs/$(CONFIG)/lib${lib.name}.a: protobuf_dep_error
+
+% if lib.build == "all":
+ifeq ($(SYSTEM),MINGW32)
+libs/$(CONFIG)/${lib.name}.$(SHARED_EXT): protobuf_dep_error
+else
+libs/$(CONFIG)/lib${lib.name}.$(SHARED_EXT): protobuf_dep_error
+endif
+% endif
+
+else
+% endif
+
 ifneq ($(OPENSSL_DEP),)
+# This is to ensure the embedded OpenSSL is built beforehand, properly
+# installing headers to their final destination on the drive. We need this
+# otherwise parallel compilation will fail if a source is compiled first.
 % for src in lib.src:
 ${src}: $(OPENSSL_DEP)
 % endfor
 endif
 
-libs/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIB${lib.name.upper()}_OBJS)
+libs/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP) $(OPENSSL_DEP)\
 ## The else here corresponds to the if secure earlier.
 % else:
-libs/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP) $(LIB${lib.name.upper()}_OBJS)
+% if lib.language == 'c++':
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+libs/$(CONFIG)/lib${lib.name}.a: protobuf_dep_error
+
+% if lib.build == "all":
+ifeq ($(SYSTEM),MINGW32)
+libs/$(CONFIG)/${lib.name}.$(SHARED_EXT): protobuf_dep_error
+else
+libs/$(CONFIG)/lib${lib.name}.$(SHARED_EXT): protobuf_dep_error
+endif
+% endif
+
+else
+
+% endif
+libs/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP)\
+% endif
+% if lib.language == 'c++':
+ $(PROTOBUF_DEP)\
 % endif
+ $(LIB${lib.name.upper()}_OBJS)
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f libs/$(CONFIG)/lib${lib.name}.a
@@ -780,10 +907,15 @@ else
 endif
 endif
 % endif
-
+% if lib.get('secure', True):
 ## If the lib was secure, we have to close the Makefile's if that tested
 ## the presence of an ALPN-capable OpenSSL.
-% if lib.get('secure', True):
+
+endif
+% endif
+% if lib.language == 'c++':
+## If the lib was C++, we have to close the Makefile's if that tested
+## the presence of protobuf 3.0.0+
 
 endif
 % endif
@@ -840,7 +972,20 @@ else
 ## That simplifies the codegen a bit, but prevents a fully defined Makefile.
 ## I can live with that.
 ##
+% if tgt.build == 'protoc':
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins if you don't have protobuf 3.0.0+.
+
+bins/$(CONFIG)/${tgt.name}: protobuf_dep_error
+
+else
+
+bins/$(CONFIG)/${tgt.name}: $(PROTOBUF_DEP) $(${tgt.name.upper()}_OBJS)\
+% else:
 bins/$(CONFIG)/${tgt.name}: $(${tgt.name.upper()}_OBJS)\
+% endif
 % for dep in tgt.deps:
  libs/$(CONFIG)/lib${dep}.a\
 % endfor
@@ -870,9 +1015,9 @@ bins/$(CONFIG)/${tgt.name}: $(${tgt.name.upper()}_OBJS)\
 % endfor
 % if tgt.language == "c++":
 % if tgt.build == 'protoc':
- $(HOST_LDLIBSXX)\
+ $(HOST_LDLIBSXX) $(HOST_LDLIBS_PROTOC)\
 % else:
- $(LDLIBSXX)\
+ $(LDLIBSXX) $(LDLIBS_PROTOBUF)\
 % endif
 % endif
 % if tgt.build == 'protoc':
@@ -886,6 +1031,10 @@ bins/$(CONFIG)/${tgt.name}: $(${tgt.name.upper()}_OBJS)\
  $(LDLIBS_SECURE)\
 % endif
  -o bins/$(CONFIG)/${tgt.name}
+% if tgt.build == 'protoc':
+
+endif
+% endif
 % if tgt.get('secure', True):
 
 endif
diff --git a/templates/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj.template b/templates/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj.template
index 45f37a8c47..193a2cd13f 100644
--- a/templates/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj.template
+++ b/templates/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj.template
@@ -1,2 +1,2 @@
 <%namespace file="vcxproj_defs.include" import="gen_project"/>\
-${gen_project('grpc_csharp_ext', libs, targets, configuration_type = 'DynamicLibrary', project_guid = '{C26D04A8-37C6-44C7-B458-906C9FCE928C}', additional_props = ['winsock'])}
+${gen_project('grpc_csharp_ext', libs, targets, configuration_type = 'DynamicLibrary', project_guid = '{C26D04A8-37C6-44C7-B458-906C9FCE928C}', additional_props = ['winsock', 'ssl'])}
diff --git a/test/build/protobuf.cc b/test/build/protobuf.cc
new file mode 100644
index 0000000000..59ead111a6
--- /dev/null
+++ b/test/build/protobuf.cc
@@ -0,0 +1,10 @@
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/descriptor.pb.h>
+
+bool protobuf_test(const google::protobuf::MethodDescriptor *method) {
+  return method->client_streaming() || method->server_streaming();
+}
+
+int main() {
+  return 0;
+}
diff --git a/test/core/end2end/gen_build_json.py b/test/core/end2end/gen_build_json.py
index 029a72e2c4..fd7012608e 100755
--- a/test/core/end2end/gen_build_json.py
+++ b/test/core/end2end/gen_build_json.py
@@ -25,6 +25,7 @@ END2END_TESTS = [
     'disappearing_server',
     'early_server_shutdown_finishes_inflight_calls',
     'early_server_shutdown_finishes_tags',
+    'empty_batch',
     'graceful_server_shutdown',
     'invoke_large_request',
     'max_concurrent_streams',
@@ -123,4 +124,3 @@ def main():
 
 if __name__ == '__main__':
   main()
-
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
new file mode 100644
index 0000000000..7faeeaa889
--- /dev/null
+++ b/test/core/end2end/tests/empty_batch.c
@@ -0,0 +1,137 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "src/core/support/string.h"
+#include <grpc/byte_buffer.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "test/core/end2end/cq_verifier.h"
+
+enum { TIMEOUT = 200000 };
+
+static void *tag(gpr_intptr 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, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_client(&f, client_args);
+  config.init_server(&f, server_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return gpr_time_add(gpr_now(), gpr_time_from_micros(GPR_US_PER_SEC * n));
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event *ev;
+  grpc_completion_type type;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time());
+    GPR_ASSERT(ev);
+    type = ev->type;
+    grpc_event_finish(ev);
+  } while (type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown(f->server);
+  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->server_cq);
+  drain_cq(f->server_cq);
+  grpc_completion_queue_destroy(f->server_cq);
+  grpc_completion_queue_shutdown(f->client_cq);
+  drain_cq(f->client_cq);
+  grpc_completion_queue_destroy(f->client_cq);
+}
+
+static void empty_batch_body(grpc_end2end_test_fixture f) {
+  grpc_call *c;
+  gpr_timespec deadline = five_seconds_time();
+  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  grpc_op *op = NULL;
+
+  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+                               "foo.test.google.com", deadline);
+  GPR_ASSERT(c);
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, op, 0, tag(1)));
+  cq_expect_completion(v_client, tag(1), GRPC_OP_OK);
+  cq_verify(v_client);
+
+  grpc_call_destroy(c);
+
+  cq_verifier_destroy(v_client);
+}
+
+static void test_invoke_empty_body(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f;
+
+  f = begin_test(config, __FUNCTION__, NULL, NULL);
+  empty_batch_body(f);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void grpc_end2end_tests(grpc_end2end_test_config config) {
+  test_invoke_empty_body(config);
+}
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 197dc3b2ba..1debaa6957 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -335,6 +335,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_fake_security_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_fake_security_graceful_server_shutdown_test"
   }, 
   {
@@ -523,6 +527,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_fullstack_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_fullstack_graceful_server_shutdown_test"
   }, 
   {
@@ -711,6 +719,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_simple_ssl_fullstack_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_simple_ssl_fullstack_graceful_server_shutdown_test"
   }, 
   {
@@ -899,6 +911,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_simple_ssl_with_oauth2_fullstack_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_simple_ssl_with_oauth2_fullstack_graceful_server_shutdown_test"
   }, 
   {
@@ -1087,6 +1103,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_socket_pair_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_socket_pair_graceful_server_shutdown_test"
   }, 
   {
@@ -1275,6 +1295,10 @@
   }, 
   {
     "language": "c", 
+    "name": "chttp2_socket_pair_one_byte_at_a_time_empty_batch_test"
+  }, 
+  {
+    "language": "c", 
     "name": "chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_test"
   }, 
   {
diff --git a/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj b/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj
index 3c55e608c1..70a43f4624 100644
--- a/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj
+++ b/vsprojects/vs2013/grpc_csharp_ext_shared.vcxproj
@@ -36,11 +36,13 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="global.props" />
     <Import Project="winsock.props" />
+    <Import Project="ssl.props" />
   </ImportGroup>
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="global.props" />
     <Import Project="winsock.props" />
+    <Import Project="ssl.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
diff --git a/vsprojects/vs2013/grpc_shared.vcxproj b/vsprojects/vs2013/grpc_shared.vcxproj
index b1890cf6e7..71b4a0cbab 100644
--- a/vsprojects/vs2013/grpc_shared.vcxproj
+++ b/vsprojects/vs2013/grpc_shared.vcxproj
@@ -277,6 +277,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
+    </ClCompile>
     <ClCompile Include="..\..\src\core\iomgr\pollset_posix.c">
     </ClCompile>
     <ClCompile Include="..\..\src\core\iomgr\pollset_windows.c">
diff --git a/vsprojects/vs2013/grpc_shared.vcxproj.filters b/vsprojects/vs2013/grpc_shared.vcxproj.filters
index fed8fb10bf..75ecc7a822 100644
--- a/vsprojects/vs2013/grpc_shared.vcxproj.filters
+++ b/vsprojects/vs2013/grpc_shared.vcxproj.filters
@@ -130,6 +130,9 @@
     <ClCompile Include="..\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
       <Filter>src\core\iomgr</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
+      <Filter>src\core\iomgr</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\core\iomgr\pollset_posix.c">
       <Filter>src\core\iomgr</Filter>
     </ClCompile>