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

253 files changed, 4670 insertions, 1768 deletions

diff --git a/BUILD b/BUILD
index e116d4584b..a19631e6df 100644
--- a/BUILD
+++ b/BUILD
@@ -168,7 +168,7 @@ cc_library(
     "src/core/client_config/resolver_factory.h",
     "src/core/client_config/resolver_registry.h",
     "src/core/client_config/resolvers/dns_resolver.h",
-    "src/core/client_config/resolvers/unix_resolver_posix.h",
+    "src/core/client_config/resolvers/sockaddr_resolver.h",
     "src/core/client_config/subchannel.h",
     "src/core/client_config/subchannel_factory.h",
     "src/core/client_config/uri_parser.h",
@@ -246,6 +246,7 @@ cc_library(
     "src/core/transport/transport.h",
     "src/core/transport/transport_impl.h",
     "src/core/census/context.h",
+    "src/core/census/rpc_stat_id.h",
     "src/core/httpcli/format_request.c",
     "src/core/httpcli/httpcli.c",
     "src/core/httpcli/httpcli_security_connector.c",
@@ -287,7 +288,7 @@ cc_library(
     "src/core/client_config/resolver_factory.c",
     "src/core/client_config/resolver_registry.c",
     "src/core/client_config/resolvers/dns_resolver.c",
-    "src/core/client_config/resolvers/unix_resolver_posix.c",
+    "src/core/client_config/resolvers/sockaddr_resolver.c",
     "src/core/client_config/subchannel.c",
     "src/core/client_config/subchannel_factory.c",
     "src/core/client_config/uri_parser.c",
@@ -381,6 +382,7 @@ cc_library(
     "src/core/transport/transport_op_string.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
+    "src/core/census/record_stat.c",
   ],
   hdrs = [
     "include/grpc/grpc_security.h",
@@ -424,7 +426,7 @@ cc_library(
     "src/core/client_config/resolver_factory.h",
     "src/core/client_config/resolver_registry.h",
     "src/core/client_config/resolvers/dns_resolver.h",
-    "src/core/client_config/resolvers/unix_resolver_posix.h",
+    "src/core/client_config/resolvers/sockaddr_resolver.h",
     "src/core/client_config/subchannel.h",
     "src/core/client_config/subchannel_factory.h",
     "src/core/client_config/uri_parser.h",
@@ -502,6 +504,7 @@ cc_library(
     "src/core/transport/transport.h",
     "src/core/transport/transport_impl.h",
     "src/core/census/context.h",
+    "src/core/census/rpc_stat_id.h",
     "src/core/surface/init_unsecure.c",
     "src/core/census/grpc_context.c",
     "src/core/channel/channel_args.c",
@@ -520,7 +523,7 @@ cc_library(
     "src/core/client_config/resolver_factory.c",
     "src/core/client_config/resolver_registry.c",
     "src/core/client_config/resolvers/dns_resolver.c",
-    "src/core/client_config/resolvers/unix_resolver_posix.c",
+    "src/core/client_config/resolvers/sockaddr_resolver.c",
     "src/core/client_config/subchannel.c",
     "src/core/client_config/subchannel_factory.c",
     "src/core/client_config/uri_parser.c",
@@ -614,6 +617,7 @@ cc_library(
     "src/core/transport/transport_op_string.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
+    "src/core/census/record_stat.c",
   ],
   hdrs = [
     "include/grpc/byte_buffer.h",
@@ -661,6 +665,7 @@ cc_library(
     "src/cpp/proto/proto_utils.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
+    "src/cpp/server/dynamic_thread_pool.cc",
     "src/cpp/server/fixed_size_thread_pool.cc",
     "src/cpp/server/insecure_server_credentials.cc",
     "src/cpp/server/server.cc",
@@ -686,6 +691,7 @@ cc_library(
     "include/grpc++/config_protobuf.h",
     "include/grpc++/create_channel.h",
     "include/grpc++/credentials.h",
+    "include/grpc++/dynamic_thread_pool.h",
     "include/grpc++/fixed_size_thread_pool.h",
     "include/grpc++/generic_stub.h",
     "include/grpc++/impl/call.h",
@@ -746,6 +752,7 @@ cc_library(
     "src/cpp/proto/proto_utils.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
+    "src/cpp/server/dynamic_thread_pool.cc",
     "src/cpp/server/fixed_size_thread_pool.cc",
     "src/cpp/server/insecure_server_credentials.cc",
     "src/cpp/server/server.cc",
@@ -771,6 +778,7 @@ cc_library(
     "include/grpc++/config_protobuf.h",
     "include/grpc++/create_channel.h",
     "include/grpc++/credentials.h",
+    "include/grpc++/dynamic_thread_pool.h",
     "include/grpc++/fixed_size_thread_pool.h",
     "include/grpc++/generic_stub.h",
     "include/grpc++/impl/call.h",
@@ -998,7 +1006,7 @@ objc_library(
     "src/core/client_config/resolver_factory.c",
     "src/core/client_config/resolver_registry.c",
     "src/core/client_config/resolvers/dns_resolver.c",
-    "src/core/client_config/resolvers/unix_resolver_posix.c",
+    "src/core/client_config/resolvers/sockaddr_resolver.c",
     "src/core/client_config/subchannel.c",
     "src/core/client_config/subchannel_factory.c",
     "src/core/client_config/uri_parser.c",
@@ -1092,6 +1100,7 @@ objc_library(
     "src/core/transport/transport_op_string.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
+    "src/core/census/record_stat.c",
   ],
   hdrs = [
     "include/grpc/grpc_security.h",
@@ -1137,7 +1146,7 @@ objc_library(
     "src/core/client_config/resolver_factory.h",
     "src/core/client_config/resolver_registry.h",
     "src/core/client_config/resolvers/dns_resolver.h",
-    "src/core/client_config/resolvers/unix_resolver_posix.h",
+    "src/core/client_config/resolvers/sockaddr_resolver.h",
     "src/core/client_config/subchannel.h",
     "src/core/client_config/subchannel_factory.h",
     "src/core/client_config/uri_parser.h",
@@ -1215,6 +1224,7 @@ objc_library(
     "src/core/transport/transport.h",
     "src/core/transport/transport_impl.h",
     "src/core/census/context.h",
+    "src/core/census/rpc_stat_id.h",
   ],
   includes = [
     "include",
diff --git a/INSTALL b/INSTALL
index 5edb5e6db2..8a0a98ad2e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -117,7 +117,7 @@ most Mac installations. Do the "git submodule" command listed above.
 Then execute the following for all the needed build dependencies
 
   $ sudo /opt/local/bin/port install autoconf automake libtool gflags cmake
-  $ mkdir ~/gtest
+  $ mkdir ~/gtest-svn
   $ svn checkout http://googletest.googlecode.com/svn/trunk/ gtest-svn
   $ mkdir mybuild
   $ cd mybuild
diff --git a/Makefile b/Makefile
index 2ae0cd052d..996fcfa1fc 100644
--- a/Makefile
+++ b/Makefile
@@ -851,6 +851,7 @@ credentials_test: $(BINDIR)/$(CONFIG)/credentials_test
 cxx_byte_buffer_test: $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test
 cxx_slice_test: $(BINDIR)/$(CONFIG)/cxx_slice_test
 cxx_time_test: $(BINDIR)/$(CONFIG)/cxx_time_test
+dynamic_thread_pool_test: $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test
 end2end_test: $(BINDIR)/$(CONFIG)/end2end_test
 fixed_size_thread_pool_test: $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test
 generic_end2end_test: $(BINDIR)/$(CONFIG)/generic_end2end_test
@@ -1532,7 +1533,7 @@ buildtests: buildtests_c buildtests_cxx
 
 buildtests_c: privatelibs_c $(BINDIR)/$(CONFIG)/alarm_heap_test $(BINDIR)/$(CONFIG)/alarm_list_test $(BINDIR)/$(CONFIG)/alarm_test $(BINDIR)/$(CONFIG)/alpn_test $(BINDIR)/$(CONFIG)/bin_encoder_test $(BINDIR)/$(CONFIG)/chttp2_status_conversion_test $(BINDIR)/$(CONFIG)/chttp2_stream_encoder_test $(BINDIR)/$(CONFIG)/chttp2_stream_map_test $(BINDIR)/$(CONFIG)/dualstack_socket_test $(BINDIR)/$(CONFIG)/fd_conservation_posix_test $(BINDIR)/$(CONFIG)/fd_posix_test $(BINDIR)/$(CONFIG)/fling_client $(BINDIR)/$(CONFIG)/fling_server $(BINDIR)/$(CONFIG)/fling_stream_test $(BINDIR)/$(CONFIG)/fling_test $(BINDIR)/$(CONFIG)/gpr_cancellable_test $(BINDIR)/$(CONFIG)/gpr_cmdline_test $(BINDIR)/$(CONFIG)/gpr_env_test $(BINDIR)/$(CONFIG)/gpr_file_test $(BINDIR)/$(CONFIG)/gpr_histogram_test $(BINDIR)/$(CONFIG)/gpr_host_port_test $(BINDIR)/$(CONFIG)/gpr_log_test $(BINDIR)/$(CONFIG)/gpr_slice_buffer_test $(BINDIR)/$(CONFIG)/gpr_slice_test $(BINDIR)/$(CONFIG)/gpr_stack_lockfree_test $(BINDIR)/$(CONFIG)/gpr_string_test $(BINDIR)/$(CONFIG)/gpr_sync_test $(BINDIR)/$(CONFIG)/gpr_thd_test $(BINDIR)/$(CONFIG)/gpr_time_test $(BINDIR)/$(CONFIG)/gpr_tls_test $(BINDIR)/$(CONFIG)/gpr_useful_test $(BINDIR)/$(CONFIG)/grpc_auth_context_test $(BINDIR)/$(CONFIG)/grpc_base64_test $(BINDIR)/$(CONFIG)/grpc_byte_buffer_reader_test $(BINDIR)/$(CONFIG)/grpc_channel_stack_test $(BINDIR)/$(CONFIG)/grpc_completion_queue_test $(BINDIR)/$(CONFIG)/grpc_credentials_test $(BINDIR)/$(CONFIG)/grpc_json_token_test $(BINDIR)/$(CONFIG)/grpc_jwt_verifier_test $(BINDIR)/$(CONFIG)/grpc_security_connector_test $(BINDIR)/$(CONFIG)/grpc_stream_op_test $(BINDIR)/$(CONFIG)/hpack_parser_test $(BINDIR)/$(CONFIG)/hpack_table_test $(BINDIR)/$(CONFIG)/httpcli_format_request_test $(BINDIR)/$(CONFIG)/httpcli_parser_test $(BINDIR)/$(CONFIG)/httpcli_test $(BINDIR)/$(CONFIG)/json_rewrite $(BINDIR)/$(CONFIG)/json_rewrite_test $(BINDIR)/$(CONFIG)/json_test $(BINDIR)/$(CONFIG)/lame_client_test $(BINDIR)/$(CONFIG)/message_compress_test $(BINDIR)/$(CONFIG)/multi_init_test $(BINDIR)/$(CONFIG)/multiple_server_queues_test $(BINDIR)/$(CONFIG)/murmur_hash_test $(BINDIR)/$(CONFIG)/no_server_test $(BINDIR)/$(CONFIG)/poll_kick_posix_test $(BINDIR)/$(CONFIG)/resolve_address_test $(BINDIR)/$(CONFIG)/secure_endpoint_test $(BINDIR)/$(CONFIG)/sockaddr_utils_test $(BINDIR)/$(CONFIG)/tcp_client_posix_test $(BINDIR)/$(CONFIG)/tcp_posix_test $(BINDIR)/$(CONFIG)/tcp_server_posix_test $(BINDIR)/$(CONFIG)/time_averaged_stats_test $(BINDIR)/$(CONFIG)/timeout_encoding_test $(BINDIR)/$(CONFIG)/timers_test $(BINDIR)/$(CONFIG)/transport_metadata_test $(BINDIR)/$(CONFIG)/transport_security_test $(BINDIR)/$(CONFIG)/uri_parser_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fake_security_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_concurrent_streams_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_message_length_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_no_op_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_ping_pong_streaming_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_registered_call_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_and_call_creds_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_compressed_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_flags_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_large_metadata_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_payload_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_server_finishes_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_delayed_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_test $(BINDIR)/$(CONFIG)/chttp2_simple_ssl_fullstack_bad_hostname_test 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$(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_max_concurrent_streams_unsecure_test 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$(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_compression_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_uds_posix_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_fullstack_with_poll_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_one_byte_at_a_time_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_bad_hostname_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_accept_and_writes_closed_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_after_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_before_invoke_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_cancel_in_a_vacuum_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_census_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_disappearing_server_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_inflight_calls_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_early_server_shutdown_finishes_tags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_empty_batch_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_graceful_server_shutdown_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_invoke_large_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_concurrent_streams_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_max_message_length_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_no_op_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_ping_pong_streaming_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_registered_call_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_binary_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_response_with_trailing_metadata_and_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_compressed_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_flags_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_large_metadata_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_request_with_payload_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_server_finishes_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_delayed_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_unsecure_test $(BINDIR)/$(CONFIG)/chttp2_socket_pair_with_grpc_trace_simple_request_with_high_initial_sequence_number_unsecure_test $(BINDIR)/$(CONFIG)/connection_prefix_bad_client_test $(BINDIR)/$(CONFIG)/initial_settings_frame_bad_client_test
 
-buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
+buildtests_cxx: privatelibs_cxx $(BINDIR)/$(CONFIG)/async_end2end_test $(BINDIR)/$(CONFIG)/async_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/async_unary_ping_pong_test $(BINDIR)/$(CONFIG)/auth_property_iterator_test $(BINDIR)/$(CONFIG)/channel_arguments_test $(BINDIR)/$(CONFIG)/cli_call_test $(BINDIR)/$(CONFIG)/client_crash_test $(BINDIR)/$(CONFIG)/client_crash_test_server $(BINDIR)/$(CONFIG)/credentials_test $(BINDIR)/$(CONFIG)/cxx_byte_buffer_test $(BINDIR)/$(CONFIG)/cxx_slice_test $(BINDIR)/$(CONFIG)/cxx_time_test $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test $(BINDIR)/$(CONFIG)/end2end_test $(BINDIR)/$(CONFIG)/fixed_size_thread_pool_test $(BINDIR)/$(CONFIG)/generic_end2end_test $(BINDIR)/$(CONFIG)/grpc_cli $(BINDIR)/$(CONFIG)/interop_client $(BINDIR)/$(CONFIG)/interop_server $(BINDIR)/$(CONFIG)/interop_test $(BINDIR)/$(CONFIG)/mock_test $(BINDIR)/$(CONFIG)/qps_interarrival_test $(BINDIR)/$(CONFIG)/qps_openloop_test $(BINDIR)/$(CONFIG)/qps_test $(BINDIR)/$(CONFIG)/secure_auth_context_test $(BINDIR)/$(CONFIG)/server_crash_test $(BINDIR)/$(CONFIG)/server_crash_test_client $(BINDIR)/$(CONFIG)/status_test $(BINDIR)/$(CONFIG)/sync_streaming_ping_pong_test $(BINDIR)/$(CONFIG)/sync_unary_ping_pong_test $(BINDIR)/$(CONFIG)/thread_stress_test
 
 test: test_c test_cxx
 
@@ -2803,6 +2804,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/cxx_slice_test || ( echo test cxx_slice_test failed ; exit 1 )
 	$(E) "[RUN]     Testing cxx_time_test"
 	$(Q) $(BINDIR)/$(CONFIG)/cxx_time_test || ( echo test cxx_time_test failed ; exit 1 )
+	$(E) "[RUN]     Testing dynamic_thread_pool_test"
+	$(Q) $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test || ( echo test dynamic_thread_pool_test failed ; exit 1 )
 	$(E) "[RUN]     Testing end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/end2end_test || ( echo test end2end_test failed ; exit 1 )
 	$(E) "[RUN]     Testing fixed_size_thread_pool_test"
@@ -3517,7 +3520,7 @@ LIBGRPC_SRC = \
     src/core/client_config/resolver_factory.c \
     src/core/client_config/resolver_registry.c \
     src/core/client_config/resolvers/dns_resolver.c \
-    src/core/client_config/resolvers/unix_resolver_posix.c \
+    src/core/client_config/resolvers/sockaddr_resolver.c \
     src/core/client_config/subchannel.c \
     src/core/client_config/subchannel_factory.c \
     src/core/client_config/uri_parser.c \
@@ -3611,6 +3614,7 @@ LIBGRPC_SRC = \
     src/core/transport/transport_op_string.c \
     src/core/census/context.c \
     src/core/census/initialize.c \
+    src/core/census/record_stat.c \
 
 PUBLIC_HEADERS_C += \
     include/grpc/grpc_security.h \
@@ -3781,7 +3785,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/client_config/resolver_factory.c \
     src/core/client_config/resolver_registry.c \
     src/core/client_config/resolvers/dns_resolver.c \
-    src/core/client_config/resolvers/unix_resolver_posix.c \
+    src/core/client_config/resolvers/sockaddr_resolver.c \
     src/core/client_config/subchannel.c \
     src/core/client_config/subchannel_factory.c \
     src/core/client_config/uri_parser.c \
@@ -3875,6 +3879,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/transport/transport_op_string.c \
     src/core/census/context.c \
     src/core/census/initialize.c \
+    src/core/census/record_stat.c \
 
 PUBLIC_HEADERS_C += \
     include/grpc/byte_buffer.h \
@@ -3941,6 +3946,7 @@ LIBGRPC++_SRC = \
     src/cpp/proto/proto_utils.cc \
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
+    src/cpp/server/dynamic_thread_pool.cc \
     src/cpp/server/fixed_size_thread_pool.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
@@ -3966,6 +3972,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/config_protobuf.h \
     include/grpc++/create_channel.h \
     include/grpc++/credentials.h \
+    include/grpc++/dynamic_thread_pool.h \
     include/grpc++/fixed_size_thread_pool.h \
     include/grpc++/generic_stub.h \
     include/grpc++/impl/call.h \
@@ -4117,7 +4124,6 @@ LIBGRPC++_TEST_UTIL_SRC = \
     $(GENDIR)/test/cpp/util/echo_duplicate.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.grpc.pb.cc \
     test/cpp/util/cli_call.cc \
     test/cpp/util/create_test_channel.cc \
-    test/cpp/util/fake_credentials.cc \
     test/cpp/util/subprocess.cc \
 
 
@@ -4164,7 +4170,6 @@ endif
 endif
 $(OBJDIR)/$(CONFIG)/test/cpp/util/cli_call.o: $(GENDIR)/test/cpp/util/messages.pb.cc $(GENDIR)/test/cpp/util/messages.grpc.pb.cc $(GENDIR)/test/cpp/util/echo.pb.cc $(GENDIR)/test/cpp/util/echo.grpc.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o: $(GENDIR)/test/cpp/util/messages.pb.cc $(GENDIR)/test/cpp/util/messages.grpc.pb.cc $(GENDIR)/test/cpp/util/echo.pb.cc $(GENDIR)/test/cpp/util/echo.grpc.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/fake_credentials.o: $(GENDIR)/test/cpp/util/messages.pb.cc $(GENDIR)/test/cpp/util/messages.grpc.pb.cc $(GENDIR)/test/cpp/util/echo.pb.cc $(GENDIR)/test/cpp/util/echo.grpc.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/util/subprocess.o: $(GENDIR)/test/cpp/util/messages.pb.cc $(GENDIR)/test/cpp/util/messages.grpc.pb.cc $(GENDIR)/test/cpp/util/echo.pb.cc $(GENDIR)/test/cpp/util/echo.grpc.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.pb.cc $(GENDIR)/test/cpp/util/echo_duplicate.grpc.pb.cc
 
 
@@ -4184,6 +4189,7 @@ LIBGRPC++_UNSECURE_SRC = \
     src/cpp/proto/proto_utils.cc \
     src/cpp/server/async_generic_service.cc \
     src/cpp/server/create_default_thread_pool.cc \
+    src/cpp/server/dynamic_thread_pool.cc \
     src/cpp/server/fixed_size_thread_pool.cc \
     src/cpp/server/insecure_server_credentials.cc \
     src/cpp/server/server.cc \
@@ -4209,6 +4215,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/config_protobuf.h \
     include/grpc++/create_channel.h \
     include/grpc++/credentials.h \
+    include/grpc++/dynamic_thread_pool.h \
     include/grpc++/fixed_size_thread_pool.h \
     include/grpc++/generic_stub.h \
     include/grpc++/impl/call.h \
@@ -8447,6 +8454,46 @@ endif
 endif
 
 
+DYNAMIC_THREAD_POOL_TEST_SRC = \
+    test/cpp/server/dynamic_thread_pool_test.cc \
+
+DYNAMIC_THREAD_POOL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(DYNAMIC_THREAD_POOL_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/dynamic_thread_pool_test: openssl_dep_error
+
+else
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/dynamic_thread_pool_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/dynamic_thread_pool_test: $(PROTOBUF_DEP) $(DYNAMIC_THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(DYNAMIC_THREAD_POOL_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/dynamic_thread_pool_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/cpp/server/dynamic_thread_pool_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+deps_dynamic_thread_pool_test: $(DYNAMIC_THREAD_POOL_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(DYNAMIC_THREAD_POOL_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 END2END_TEST_SRC = \
     test/cpp/end2end/end2end_test.cc \
 
diff --git a/build.json b/build.json
index 2755703e1c..dd633070ff 100644
--- a/build.json
+++ b/build.json
@@ -18,11 +18,13 @@
         "include/grpc/census.h"
       ],
       "headers": [
-        "src/core/census/context.h"
+        "src/core/census/context.h",
+        "src/core/census/rpc_stat_id.h"
       ],
       "src": [
         "src/core/census/context.c",
-        "src/core/census/initialize.c"
+        "src/core/census/initialize.c",
+        "src/core/census/record_stat.c"
       ]
     },
     {
@@ -41,6 +43,7 @@
         "include/grpc++/config_protobuf.h",
         "include/grpc++/create_channel.h",
         "include/grpc++/credentials.h",
+        "include/grpc++/dynamic_thread_pool.h",
         "include/grpc++/fixed_size_thread_pool.h",
         "include/grpc++/generic_stub.h",
         "include/grpc++/impl/call.h",
@@ -88,6 +91,7 @@
         "src/cpp/proto/proto_utils.cc",
         "src/cpp/server/async_generic_service.cc",
         "src/cpp/server/create_default_thread_pool.cc",
+        "src/cpp/server/dynamic_thread_pool.cc",
         "src/cpp/server/fixed_size_thread_pool.cc",
         "src/cpp/server/insecure_server_credentials.cc",
         "src/cpp/server/server.cc",
@@ -129,7 +133,7 @@
         "src/core/client_config/resolver_factory.h",
         "src/core/client_config/resolver_registry.h",
         "src/core/client_config/resolvers/dns_resolver.h",
-        "src/core/client_config/resolvers/unix_resolver_posix.h",
+        "src/core/client_config/resolvers/sockaddr_resolver.h",
         "src/core/client_config/subchannel.h",
         "src/core/client_config/subchannel_factory.h",
         "src/core/client_config/uri_parser.h",
@@ -225,7 +229,7 @@
         "src/core/client_config/resolver_factory.c",
         "src/core/client_config/resolver_registry.c",
         "src/core/client_config/resolvers/dns_resolver.c",
-        "src/core/client_config/resolvers/unix_resolver_posix.c",
+        "src/core/client_config/resolvers/sockaddr_resolver.c",
         "src/core/client_config/subchannel.c",
         "src/core/client_config/subchannel_factory.c",
         "src/core/client_config/uri_parser.c",
@@ -609,7 +613,6 @@
       "headers": [
         "test/cpp/util/cli_call.h",
         "test/cpp/util/create_test_channel.h",
-        "test/cpp/util/fake_credentials.h",
         "test/cpp/util/subprocess.h"
       ],
       "src": [
@@ -618,7 +621,6 @@
         "test/cpp/util/echo_duplicate.proto",
         "test/cpp/util/cli_call.cc",
         "test/cpp/util/create_test_channel.cc",
-        "test/cpp/util/fake_credentials.cc",
         "test/cpp/util/subprocess.cc"
       ],
       "deps": [
@@ -2045,6 +2047,21 @@
       ]
     },
     {
+      "name": "dynamic_thread_pool_test",
+      "build": "test",
+      "language": "c++",
+      "src": [
+        "test/cpp/server/dynamic_thread_pool_test.cc"
+      ],
+      "deps": [
+        "grpc_test_util",
+        "grpc++",
+        "grpc",
+        "gpr_test_util",
+        "gpr"
+      ]
+    },
+    {
       "name": "end2end_test",
       "build": "test",
       "language": "c++",
diff --git a/composer.json b/composer.json
index 875ec55d8a..1d78a2ce21 100644
--- a/composer.json
+++ b/composer.json
@@ -2,6 +2,7 @@
   "name": "grpc/grpc",
   "type": "library",
   "description": "gRPC library for PHP",
+  "version": "0.5.1",
   "keywords": ["rpc"],
   "homepage": "http://grpc.io",
   "license": "BSD-3-Clause",
diff --git a/gRPC.podspec b/gRPC.podspec
index 28d9ac4c53..f47b44fe9d 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -170,7 +170,7 @@ Pod::Spec.new do |s|
                       'src/core/client_config/resolver_factory.h',
                       'src/core/client_config/resolver_registry.h',
                       'src/core/client_config/resolvers/dns_resolver.h',
-                      'src/core/client_config/resolvers/unix_resolver_posix.h',
+                      'src/core/client_config/resolvers/sockaddr_resolver.h',
                       'src/core/client_config/subchannel.h',
                       'src/core/client_config/subchannel_factory.h',
                       'src/core/client_config/uri_parser.h',
@@ -248,6 +248,7 @@ Pod::Spec.new do |s|
                       'src/core/transport/transport.h',
                       'src/core/transport/transport_impl.h',
                       'src/core/census/context.h',
+                      'src/core/census/rpc_stat_id.h',
                       'grpc/grpc_security.h',
                       'grpc/byte_buffer.h',
                       'grpc/byte_buffer_reader.h',
@@ -296,7 +297,7 @@ Pod::Spec.new do |s|
                       'src/core/client_config/resolver_factory.c',
                       'src/core/client_config/resolver_registry.c',
                       'src/core/client_config/resolvers/dns_resolver.c',
-                      'src/core/client_config/resolvers/unix_resolver_posix.c',
+                      'src/core/client_config/resolvers/sockaddr_resolver.c',
                       'src/core/client_config/subchannel.c',
                       'src/core/client_config/subchannel_factory.c',
                       'src/core/client_config/uri_parser.c',
@@ -389,7 +390,8 @@ Pod::Spec.new do |s|
                       'src/core/transport/transport.c',
                       'src/core/transport/transport_op_string.c',
                       'src/core/census/context.c',
-                      'src/core/census/initialize.c'
+                      'src/core/census/initialize.c',
+                      'src/core/census/record_stat.c'
 
     ss.private_header_files = 'src/core/support/env.h',
                               'src/core/support/file.h',
@@ -434,7 +436,7 @@ Pod::Spec.new do |s|
                               'src/core/client_config/resolver_factory.h',
                               'src/core/client_config/resolver_registry.h',
                               'src/core/client_config/resolvers/dns_resolver.h',
-                              'src/core/client_config/resolvers/unix_resolver_posix.h',
+                              'src/core/client_config/resolvers/sockaddr_resolver.h',
                               'src/core/client_config/subchannel.h',
                               'src/core/client_config/subchannel_factory.h',
                               'src/core/client_config/uri_parser.h',
@@ -511,7 +513,8 @@ Pod::Spec.new do |s|
                               'src/core/transport/stream_op.h',
                               'src/core/transport/transport.h',
                               'src/core/transport/transport_impl.h',
-                              'src/core/census/context.h'
+                              'src/core/census/context.h',
+                              'src/core/census/rpc_stat_id.h'
 
     ss.header_mappings_dir = '.'
 
diff --git a/include/grpc++/config.h b/include/grpc++/config.h
index 1362c0a1fa..889dc39eb7 100644
--- a/include/grpc++/config.h
+++ b/include/grpc++/config.h
@@ -79,6 +79,7 @@
 
 #ifdef GRPC_CXX0X_NO_NULLPTR
 #include <memory>
+namespace grpc {
 const class {
  public:
   template <class T>
@@ -98,6 +99,7 @@ const class {
  private:
   void operator&() const = delete;
 } nullptr = {};
+}
 #endif
 
 #ifndef GRPC_CUSTOM_STRING
diff --git a/include/grpc++/credentials.h b/include/grpc++/credentials.h
index 0eaaefcbca..a4f1e73118 100644
--- a/include/grpc++/credentials.h
+++ b/include/grpc++/credentials.h
@@ -106,13 +106,13 @@ std::shared_ptr<Credentials> ServiceAccountCredentials(
     const grpc::string& json_key, const grpc::string& scope,
     long token_lifetime_seconds);
 
-// Builds JWT credentials.
+// Builds Service Account JWT Access credentials.
 // json_key is the JSON key string containing the client's private key.
 // token_lifetime_seconds is the lifetime in seconds of each Json Web Token
 // (JWT) created with this credentials. It should not exceed
 // grpc_max_auth_token_lifetime or will be cropped to this value.
-std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
-                                            long token_lifetime_seconds);
+std::shared_ptr<Credentials> ServiceAccountJWTAccessCredentials(
+    const grpc::string& json_key, long token_lifetime_seconds);
 
 // Builds refresh token credentials.
 // json_refresh_token is the JSON string containing the refresh token along
diff --git a/include/grpc++/dynamic_thread_pool.h b/include/grpc++/dynamic_thread_pool.h
new file mode 100644
index 0000000000..bc4e2d4d74
--- /dev/null
+++ b/include/grpc++/dynamic_thread_pool.h
@@ -0,0 +1,81 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPCXX_DYNAMIC_THREAD_POOL_H
+#define GRPCXX_DYNAMIC_THREAD_POOL_H
+
+#include <grpc++/config.h>
+
+#include <grpc++/impl/sync.h>
+#include <grpc++/impl/thd.h>
+#include <grpc++/thread_pool_interface.h>
+
+#include <list>
+#include <queue>
+
+namespace grpc {
+
+class DynamicThreadPool GRPC_FINAL : public ThreadPoolInterface {
+ public:
+  explicit DynamicThreadPool(int reserve_threads);
+  ~DynamicThreadPool();
+
+  void Add(const std::function<void()>& callback) GRPC_OVERRIDE;
+
+ private:
+  class DynamicThread {
+  public:
+    DynamicThread(DynamicThreadPool *pool);
+    ~DynamicThread();
+  private:
+    DynamicThreadPool *pool_;
+    std::unique_ptr<grpc::thread> thd_;
+    void ThreadFunc();
+  };
+  grpc::mutex mu_;
+  grpc::condition_variable cv_;
+  grpc::condition_variable shutdown_cv_;
+  bool shutdown_;
+  std::queue<std::function<void()>> callbacks_;
+  int reserve_threads_;
+  int nthreads_;
+  int threads_waiting_;
+  std::list<DynamicThread*> dead_threads_;
+
+  void ThreadFunc();
+  static void ReapThreads(std::list<DynamicThread*>* tlist);
+};
+
+}  // namespace grpc
+
+#endif  // GRPCXX_DYNAMIC_THREAD_POOL_H
diff --git a/include/grpc++/impl/sync_no_cxx11.h b/include/grpc++/impl/sync_no_cxx11.h
index dda939bf71..fda668957e 100644
--- a/include/grpc++/impl/sync_no_cxx11.h
+++ b/include/grpc++/impl/sync_no_cxx11.h
@@ -87,7 +87,7 @@ class condition_variable {
   ~condition_variable() { gpr_cv_destroy(&cv_); }
   void wait(lock_guard<mutex> &mu) {
     mu.locked = false;
-    gpr_cv_wait(&cv_, &mu.mu_.mu_, gpr_inf_future);
+    gpr_cv_wait(&cv_, &mu.mu_.mu_, gpr_inf_future(GPR_CLOCK_REALTIME);
     mu.locked = true;
   }
   void notify_one() { gpr_cv_signal(&cv_); }
diff --git a/include/grpc/census.h b/include/grpc/census.h
index 3fc07affc8..379783905a 100644
--- a/include/grpc/census.h
+++ b/include/grpc/census.h
@@ -100,6 +100,17 @@ int census_context_deserialize(const char *buffer, census_context **context);
  * future census calls will result in undefined behavior. */
 void census_context_destroy(census_context *context);
 
+/* A census statistic to be recorded comprises two parts: an ID for the
+ * particular statistic and the value to be recorded against it. */
+typedef struct {
+  int id;
+  double value;
+} census_stat;
+
+/* Record new stats against the given context. */
+void census_record_stat(census_context *context, census_stat *stats,
+                        size_t nstats);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 504f0cce03..3287b090f3 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -433,16 +433,30 @@ grpc_call *grpc_channel_create_registered_call(
 grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops,
                                       size_t nops, void *tag);
 
+/** Returns a newly allocated string representing the endpoint to which this
+    call is communicating with. The string is in the uri format accepted by
+    grpc_channel_create.
+    The returned string should be disposed of with gpr_free(). 
+
+    WARNING: this value is never authenticated or subject to any security
+    related code. It must not be used for any authentication related
+    functionality. Instead, use grpc_auth_context. */
+char *grpc_call_get_peer(grpc_call *call);
+
+/** Return a newly allocated string representing the target a channel was
+    created for. */
+char *grpc_channel_get_target(grpc_channel *channel);
+
 /** Create a client channel to 'target'. Additional channel level configuration
     MAY be provided by grpc_channel_args, though the expectation is that most
     clients will want to simply pass NULL. See grpc_channel_args definition for
     more on this. The data in 'args' need only live through the invocation of
     this function. */
-grpc_channel *grpc_channel_create(const char *target,
-                                  const grpc_channel_args *args);
+grpc_channel *grpc_insecure_channel_create(const char *target,
+                                           const grpc_channel_args *args);
 
 /** Create a lame client: this client fails every operation attempted on it. */
-grpc_channel *grpc_lame_client_channel_create(void);
+grpc_channel *grpc_lame_client_channel_create(const char *target);
 
 /** Close and destroy a grpc channel */
 void grpc_channel_destroy(grpc_channel *channel);
diff --git a/include/grpc/grpc_security.h b/include/grpc/grpc_security.h
index 7c5bd6433f..ff84050c6d 100644
--- a/include/grpc/grpc_security.h
+++ b/include/grpc/grpc_security.h
@@ -119,8 +119,8 @@ grpc_credentials *grpc_service_account_credentials_create(
    - token_lifetime is the lifetime of each Json Web Token (JWT) created with
      this credentials.  It should not exceed grpc_max_auth_token_lifetime or
      will be cropped to this value.  */
-grpc_credentials *grpc_jwt_credentials_create(const char *json_key,
-                                              gpr_timespec token_lifetime);
+grpc_credentials *grpc_service_account_jwt_access_credentials_create(
+    const char *json_key, gpr_timespec token_lifetime);
 
 /* Creates an Oauth2 Refresh Token credentials object. May return NULL if the
    input is invalid.
@@ -140,9 +140,6 @@ grpc_credentials *grpc_access_token_credentials_create(
 grpc_credentials *grpc_iam_credentials_create(const char *authorization_token,
                                               const char *authority_selector);
 
-/* Creates a fake transport security credentials object for testing. */
-grpc_credentials *grpc_fake_transport_security_credentials_create(void);
-
 /* --- Secure channel creation. --- */
 
 /* The caller of the secure_channel_create functions may override the target
@@ -185,10 +182,6 @@ grpc_server_credentials *grpc_ssl_server_credentials_create(
     const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
     size_t num_key_cert_pairs, int force_client_auth);
 
-/* Creates a fake server transport security credentials object for testing. */
-grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
-    void);
-
 /* --- Server-side secure ports. --- */
 
 /* Add a HTTP2 over an encrypted link over tcp listener.
@@ -209,7 +202,6 @@ grpc_call_error grpc_call_set_credentials(grpc_call *call,
 /* TODO(jboeuf): Define some well-known property names. */
 
 #define GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME "transport_security_type"
-#define GRPC_FAKE_TRANSPORT_SECURITY_TYPE "fake"
 #define GRPC_SSL_TRANSPORT_SECURITY_TYPE "ssl"
 
 #define GRPC_X509_CN_PROPERTY_NAME "x509_common_name"
diff --git a/include/grpc/support/host_port.h b/include/grpc/support/host_port.h
index 3cc2f498e8..30267ab1df 100644
--- a/include/grpc/support/host_port.h
+++ b/include/grpc/support/host_port.h
@@ -52,8 +52,10 @@ int gpr_join_host_port(char **out, const char *host, int port);
 
 /* Given a name in the form "host:port" or "[ho:st]:port", split into hostname
    and port number, into newly allocated strings, which must later be
-   destroyed using gpr_free(). */
-void gpr_split_host_port(const char *name, char **host, char **port);
+   destroyed using gpr_free().
+   Return 1 on success, 0 on failure. Guarantees *host and *port == NULL on
+   failure. */
+int gpr_split_host_port(const char *name, char **host, char **port);
 
 #ifdef __cplusplus
 }
diff --git a/src/compiler/csharp_generator.cc b/src/compiler/csharp_generator.cc
index 1910e9bd2d..586d6a7994 100644
--- a/src/compiler/csharp_generator.cc
+++ b/src/compiler/csharp_generator.cc
@@ -149,7 +149,7 @@ std::string GetMethodRequestParamMaybe(const MethodDescriptor *method) {
 std::string GetMethodReturnTypeClient(const MethodDescriptor *method) {
   switch (GetMethodType(method)) {
     case METHODTYPE_NO_STREAMING:
-      return "Task<" + GetClassName(method->output_type()) + ">";
+      return "AsyncUnaryCall<" + GetClassName(method->output_type()) + ">";
     case METHODTYPE_CLIENT_STREAMING:
       return "AsyncClientStreamingCall<" + GetClassName(method->input_type())
           + ", " + GetClassName(method->output_type()) + ">";
@@ -269,7 +269,7 @@ void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
       out->Print(
-          "$response$ $methodname$($request$ request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));\n",
+          "$response$ $methodname$($request$ request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));\n",
           "methodname", method->name(), "request",
           GetClassName(method->input_type()), "response",
           GetClassName(method->output_type()));
@@ -280,7 +280,7 @@ void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
     out->Print(
-        "$returntype$ $methodname$($request_maybe$Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));\n",
+        "$returntype$ $methodname$($request_maybe$Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method), "returntype",
         GetMethodReturnTypeClient(method));
@@ -298,7 +298,7 @@ void GenerateServerInterface(Printer* out, const ServiceDescriptor *service) {
   out->Indent();
   for (int i = 0; i < service->method_count(); i++) {
     const MethodDescriptor *method = service->method(i);
-    out->Print("$returntype$ $methodname$(ServerCallContext context, $request$$response_stream_maybe$);\n",
+    out->Print("$returntype$ $methodname$($request$$response_stream_maybe$, ServerCallContext context);\n",
                "methodname", method->name(), "returntype",
                GetMethodReturnTypeServer(method), "request",
                GetMethodRequestParamServer(method), "response_stream_maybe",
@@ -332,13 +332,13 @@ void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
       out->Print(
-          "public $response$ $methodname$($request$ request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))\n",
+          "public $response$ $methodname$($request$ request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))\n",
           "methodname", method->name(), "request",
           GetClassName(method->input_type()), "response",
           GetClassName(method->output_type()));
       out->Print("{\n");
       out->Indent();
-      out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers);\n",
+      out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers, deadline);\n",
                  "servicenamefield", GetServiceNameFieldName(), "methodfield",
                  GetMethodFieldName(method));
       out->Print("return Calls.BlockingUnaryCall(call, request, cancellationToken);\n");
@@ -351,13 +351,13 @@ void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
     out->Print(
-        "public $returntype$ $methodname$($request_maybe$Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))\n",
+        "public $returntype$ $methodname$($request_maybe$Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method), "returntype",
         GetMethodReturnTypeClient(method));
     out->Print("{\n");
     out->Indent();
-    out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers);\n",
+    out->Print("var call = CreateCall($servicenamefield$, $methodfield$, headers, deadline);\n",
                "servicenamefield", GetServiceNameFieldName(), "methodfield",
                GetMethodFieldName(method));
     switch (GetMethodType(method)) {
diff --git a/src/compiler/python_generator.cc b/src/compiler/python_generator.cc
index 724b69c703..2982a89fad 100644
--- a/src/compiler/python_generator.cc
+++ b/src/compiler/python_generator.cc
@@ -249,7 +249,7 @@ bool GetModuleAndMessagePath(const Descriptor* type,
   do {
     message_path.push_back(path_elem_type);
     path_elem_type = path_elem_type->containing_type();
-  } while (path_elem_type != nullptr);
+  } while (path_elem_type); // implicit nullptr comparison; don't be explicit
   grpc::string file_name = type->file()->name();
   static const int proto_suffix_length = strlen(".proto");
   if (!(file_name.size() > static_cast<size_t>(proto_suffix_length) &&
diff --git a/test/cpp/util/fake_credentials.h b/src/core/census/record_stat.c
index e1ba7bb9e4..3dd918618b 100644
--- a/test/cpp/util/fake_credentials.h
+++ b/src/core/census/record_stat.c
@@ -31,21 +31,8 @@
  *
  */
 
-#ifndef GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H
-#define GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H
+#include <grpc/census.h>
+#include "src/core/census/rpc_stat_id.h"
 
-#include <memory>
-
-namespace grpc {
-class Credentials;
-class ServerCredentials;
-
-namespace testing {
-
-std::shared_ptr<Credentials> FakeTransportSecurityCredentials();
-std::shared_ptr<ServerCredentials> FakeTransportSecurityServerCredentials();
-
-}  // namespace testing
-}  // namespace grpc
-
-#endif  // GRPC_TEST_CPP_UTIL_FAKE_CREDENTIALS_H
+void census_record_stat(census_context *context, census_stat *stats,
+                        size_t nstats) {}
diff --git a/test/cpp/util/fake_credentials.cc b/src/core/census/rpc_stat_id.h
index f5b83b8159..fc0aa6f43f 100644
--- a/test/cpp/util/fake_credentials.cc
+++ b/src/core/census/rpc_stat_id.h
@@ -31,28 +31,16 @@
  *
  */
 
-#include <grpc/grpc_security.h>
-#include <grpc++/channel_arguments.h>
-#include <grpc++/credentials.h>
-#include <grpc++/server_credentials.h>
-#include "src/cpp/client/channel.h"
-#include "src/cpp/client/secure_credentials.h"
-#include "src/cpp/server/secure_server_credentials.h"
+#ifndef CENSUS_RPC_STAT_ID_H
+#define CENSUS_RPC_STAT_ID_H
 
-namespace grpc {
-namespace testing {
+/* Stats ID's used for RPC measurements. */
+#define CENSUS_INVALID_STAT_ID 0     /* ID 0 is always invalid */
+#define CENSUS_RPC_CLIENT_REQUESTS 1 /* Count of client requests sent. */
+#define CENSUS_RPC_SERVER_REQUESTS 2 /* Count of server requests sent. */
+#define CENSUS_RPC_CLIENT_ERRORS 3   /* Client error counts. */
+#define CENSUS_RPC_SERVER_ERRORS 4   /* Server error counts. */
+#define CENSUS_RPC_CLIENT_LATENCY 5  /* Client side request latency. */
+#define CENSUS_RPC_SERVER_LATENCY 6  /* Server side request latency. */
 
-std::shared_ptr<Credentials> FakeTransportSecurityCredentials() {
-  grpc_credentials* c_creds = grpc_fake_transport_security_credentials_create();
-  return std::shared_ptr<Credentials>(new SecureCredentials(c_creds));
-}
-
-std::shared_ptr<ServerCredentials> FakeTransportSecurityServerCredentials() {
-  grpc_server_credentials* c_creds =
-      grpc_fake_transport_security_server_credentials_create();
-  return std::shared_ptr<ServerCredentials>(
-      new SecureServerCredentials(c_creds));
-}
-
-}  // namespace testing
-}  // namespace grpc
+#endif /* CENSUS_RPC_STAT_ID_H */
diff --git a/src/core/channel/channel_stack.c b/src/core/channel/channel_stack.c
index e38dcb58b7..cd7c182ef2 100644
--- a/src/core/channel/channel_stack.c
+++ b/src/core/channel/channel_stack.c
@@ -191,6 +191,11 @@ void grpc_call_next_op(grpc_call_element *elem, grpc_transport_stream_op *op) {
   next_elem->filter->start_transport_stream_op(next_elem, op);
 }
 
+char *grpc_call_next_get_peer(grpc_call_element *elem) {
+  grpc_call_element *next_elem = elem + 1;
+  return next_elem->filter->get_peer(next_elem);
+}
+
 void grpc_channel_next_op(grpc_channel_element *elem, grpc_transport_op *op) {
   grpc_channel_element *next_elem = elem + 1;
   next_elem->filter->start_transport_op(next_elem, op);
diff --git a/src/core/channel/channel_stack.h b/src/core/channel/channel_stack.h
index 785be8925b..4a608b956e 100644
--- a/src/core/channel/channel_stack.h
+++ b/src/core/channel/channel_stack.h
@@ -104,6 +104,9 @@ typedef struct {
      The filter does not need to do any chaining */
   void (*destroy_channel_elem)(grpc_channel_element *elem);
 
+  /* Implement grpc_call_get_peer() */
+  char *(*get_peer)(grpc_call_element *elem);
+
   /* The name of this filter */
   const char *name;
 } grpc_channel_filter;
@@ -173,6 +176,8 @@ void grpc_call_next_op(grpc_call_element *elem, grpc_transport_stream_op *op);
 /* Call the next operation (depending on call directionality) in a channel
    stack */
 void grpc_channel_next_op(grpc_channel_element *elem, grpc_transport_op *op);
+/* Pass through a request to get_peer to the next child element */
+char *grpc_call_next_get_peer(grpc_call_element *elem);
 
 /* Given the top element of a channel stack, get the channel stack itself */
 grpc_channel_stack *grpc_channel_stack_from_top_element(
diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index c1aa580b2d..ec6ca42889 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -265,6 +265,26 @@ static grpc_iomgr_closure *merge_into_waiting_op(
   return consumed_op;
 }
 
+static char *cc_get_peer(grpc_call_element *elem) {
+  call_data *calld = elem->call_data;
+  channel_data *chand = elem->channel_data;
+  grpc_subchannel_call *subchannel_call;
+  char *result;
+
+  gpr_mu_lock(&calld->mu_state);
+  if (calld->state == CALL_ACTIVE) {
+    subchannel_call = calld->subchannel_call;
+    GRPC_SUBCHANNEL_CALL_REF(subchannel_call, "get_peer");
+    gpr_mu_unlock(&calld->mu_state);
+    result = grpc_subchannel_call_get_peer(subchannel_call);
+    GRPC_SUBCHANNEL_CALL_UNREF(subchannel_call, "get_peer");
+    return result;
+  } else {
+    gpr_mu_unlock(&calld->mu_state);
+    return grpc_channel_get_target(chand->master);
+  }
+}
+
 static void perform_transport_stream_op(grpc_call_element *elem,
                                         grpc_transport_stream_op *op,
                                         int continuation) {
@@ -440,7 +460,7 @@ static void cc_on_config_changed(void *arg, int iomgr_success) {
 
   while (wakeup_closures) {
     grpc_iomgr_closure *next = wakeup_closures->next;
-    grpc_iomgr_add_callback(wakeup_closures);
+    wakeup_closures->cb(wakeup_closures->cb_arg, 1);
     wakeup_closures = next;
   }
 
@@ -590,6 +610,7 @@ const grpc_channel_filter grpc_client_channel_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
+    cc_get_peer,
     "client-channel",
 };
 
diff --git a/src/core/channel/compress_filter.c b/src/core/channel/compress_filter.c
index 14cb3da62d..9fc8589fbb 100644
--- a/src/core/channel/compress_filter.c
+++ b/src/core/channel/compress_filter.c
@@ -174,6 +174,8 @@ static void process_send_ops(grpc_call_element *elem,
   size_t i;
   int did_compress = 0;
 
+  /* In streaming calls, we need to reset the previously accumulated slices */
+  gpr_slice_buffer_reset_and_unref(&calld->slices);
   for (i = 0; i < send_ops->nops; ++i) {
     grpc_stream_op *sop = &send_ops->ops[i];
     switch (sop->type) {
@@ -200,7 +202,7 @@ static void process_send_ops(grpc_call_element *elem,
                 channeld->default_compression_algorithm;
             calld->has_compression_algorithm = 1; /* GPR_TRUE */
           }
-          grpc_metadata_batch_add_head(
+          grpc_metadata_batch_add_tail(
               &(sop->data.metadata), &calld->compression_algorithm_storage,
               grpc_mdelem_ref(channeld->mdelem_compression_algorithms
                                   [calld->compression_algorithm]));
@@ -282,19 +284,19 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
       grpc_channel_args_get_compression_algorithm(args);
 
   channeld->mdstr_request_compression_algorithm_key =
-      grpc_mdstr_from_string(mdctx, GRPC_COMPRESS_REQUEST_ALGORITHM_KEY);
+      grpc_mdstr_from_string(mdctx, GRPC_COMPRESS_REQUEST_ALGORITHM_KEY, 0);
 
   channeld->mdstr_outgoing_compression_algorithm_key =
-      grpc_mdstr_from_string(mdctx, "grpc-encoding");
+      grpc_mdstr_from_string(mdctx, "grpc-encoding", 0);
 
   for (algo_idx = 0; algo_idx < GRPC_COMPRESS_ALGORITHMS_COUNT; ++algo_idx) {
-    char *algorith_name;
-    GPR_ASSERT(grpc_compression_algorithm_name(algo_idx, &algorith_name) != 0);
+    char *algorithm_name;
+    GPR_ASSERT(grpc_compression_algorithm_name(algo_idx, &algorithm_name) != 0);
     channeld->mdelem_compression_algorithms[algo_idx] =
         grpc_mdelem_from_metadata_strings(
             mdctx,
             grpc_mdstr_ref(channeld->mdstr_outgoing_compression_algorithm_key),
-            grpc_mdstr_from_string(mdctx, algorith_name));
+            grpc_mdstr_from_string(mdctx, algorithm_name, 0));
   }
 
   GPR_ASSERT(!is_last);
@@ -322,4 +324,5 @@ const grpc_channel_filter grpc_compress_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
+    grpc_call_next_get_peer,
     "compress"};
diff --git a/src/core/channel/connected_channel.c b/src/core/channel/connected_channel.c
index 34d07de519..b95ed06f2b 100644
--- a/src/core/channel/connected_channel.c
+++ b/src/core/channel/connected_channel.c
@@ -119,6 +119,11 @@ static void destroy_channel_elem(grpc_channel_element *elem) {
   grpc_transport_destroy(cd->transport);
 }
 
+static char *con_get_peer(grpc_call_element *elem) {
+  channel_data *chand = elem->channel_data;
+  return grpc_transport_get_peer(chand->transport);
+}
+
 const grpc_channel_filter grpc_connected_channel_filter = {
     con_start_transport_stream_op,
     con_start_transport_op,
@@ -128,6 +133,7 @@ const grpc_channel_filter grpc_connected_channel_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
+    con_get_peer,
     "connected",
 };
 
diff --git a/src/core/channel/http_client_filter.c b/src/core/channel/http_client_filter.c
index bc821b16fa..91125cb149 100644
--- a/src/core/channel/http_client_filter.c
+++ b/src/core/channel/http_client_filter.c
@@ -98,6 +98,18 @@ static void hc_on_recv(void *user_data, int success) {
   calld->on_done_recv->cb(calld->on_done_recv->cb_arg, success);
 }
 
+static grpc_mdelem *client_strip_filter(void *user_data, grpc_mdelem *md) {
+  grpc_call_element *elem = user_data;
+  channel_data *channeld = elem->channel_data;
+  /* eat the things we'd like to set ourselves */
+  if (md->key == channeld->method->key) return NULL;
+  if (md->key == channeld->scheme->key) return NULL;
+  if (md->key == channeld->te_trailers->key) return NULL;
+  if (md->key == channeld->content_type->key) return NULL;
+  if (md->key == channeld->user_agent->key) return NULL;
+  return md;
+}
+
 static void hc_mutate_op(grpc_call_element *elem,
                          grpc_transport_stream_op *op) {
   /* grab pointers to our data from the call element */
@@ -111,6 +123,7 @@ static void hc_mutate_op(grpc_call_element *elem,
       grpc_stream_op *op = &ops[i];
       if (op->type != GRPC_OP_METADATA) continue;
       calld->sent_initial_metadata = 1;
+      grpc_metadata_batch_filter(&op->data.metadata, client_strip_filter, elem);
       /* Send : prefixed headers, which have to be before any application
          layer headers. */
       grpc_metadata_batch_add_head(&op->data.metadata, &calld->method,
@@ -220,7 +233,7 @@ static grpc_mdstr *user_agent_from_args(grpc_mdctx *mdctx,
 
   tmp = gpr_strvec_flatten(&v, NULL);
   gpr_strvec_destroy(&v);
-  result = grpc_mdstr_from_string(mdctx, tmp);
+  result = grpc_mdstr_from_string(mdctx, tmp, 0);
   gpr_free(tmp);
 
   return result;
@@ -247,7 +260,7 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
       grpc_mdelem_from_strings(mdctx, "content-type", "application/grpc");
   channeld->status = grpc_mdelem_from_strings(mdctx, ":status", "200");
   channeld->user_agent = grpc_mdelem_from_metadata_strings(
-      mdctx, grpc_mdstr_from_string(mdctx, "user-agent"),
+      mdctx, grpc_mdstr_from_string(mdctx, "user-agent", 0),
       user_agent_from_args(mdctx, args));
 }
 
@@ -267,4 +280,5 @@ static void destroy_channel_elem(grpc_channel_element *elem) {
 const grpc_channel_filter grpc_http_client_filter = {
     hc_start_transport_op, grpc_channel_next_op, sizeof(call_data),
     init_call_elem,        destroy_call_elem,    sizeof(channel_data),
-    init_channel_elem,     destroy_channel_elem, "http-client"};
+    init_channel_elem,     destroy_channel_elem, grpc_call_next_get_peer,
+    "http-client"};
diff --git a/src/core/channel/http_server_filter.c b/src/core/channel/http_server_filter.c
index a6cbb5a7f4..9d89eb9bf2 100644
--- a/src/core/channel/http_server_filter.c
+++ b/src/core/channel/http_server_filter.c
@@ -250,9 +250,9 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
   channeld->http_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "http");
   channeld->https_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "https");
   channeld->grpc_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "grpc");
-  channeld->path_key = grpc_mdstr_from_string(mdctx, ":path");
-  channeld->authority_key = grpc_mdstr_from_string(mdctx, ":authority");
-  channeld->host_key = grpc_mdstr_from_string(mdctx, "host");
+  channeld->path_key = grpc_mdstr_from_string(mdctx, ":path", 0);
+  channeld->authority_key = grpc_mdstr_from_string(mdctx, ":authority", 0);
+  channeld->host_key = grpc_mdstr_from_string(mdctx, "host", 0);
   channeld->content_type =
       grpc_mdelem_from_strings(mdctx, "content-type", "application/grpc");
 
@@ -280,4 +280,5 @@ static void destroy_channel_elem(grpc_channel_element *elem) {
 const grpc_channel_filter grpc_http_server_filter = {
     hs_start_transport_op, grpc_channel_next_op, sizeof(call_data),
     init_call_elem,        destroy_call_elem,    sizeof(channel_data),
-    init_channel_elem,     destroy_channel_elem, "http-server"};
+    init_channel_elem,     destroy_channel_elem, grpc_call_next_get_peer,
+    "http-server"};
diff --git a/src/core/channel/noop_filter.c b/src/core/channel/noop_filter.c
index 5117723617..d631885aaf 100644
--- a/src/core/channel/noop_filter.c
+++ b/src/core/channel/noop_filter.c
@@ -127,4 +127,5 @@ const grpc_channel_filter grpc_no_op_filter = {noop_start_transport_stream_op,
                                                sizeof(channel_data),
                                                init_channel_elem,
                                                destroy_channel_elem,
+                                               grpc_call_next_get_peer,
                                                "no-op"};
diff --git a/src/core/client_config/README.md b/src/core/client_config/README.md
index d0700cfb13..fff7a5af5b 100644
--- a/src/core/client_config/README.md
+++ b/src/core/client_config/README.md
@@ -60,3 +60,7 @@ unix:path        - the unix scheme is used to create and connect to unix domain
                    sockets - the authority must be empty, and the path
                    represents the absolute or relative path to the desired
                    socket
+
+ipv4:host:port   - a pre-resolved ipv4 dotted decimal address/port combination
+
+ipv6:[host]:port - a pre-resolved ipv6 address/port combination
diff --git a/src/core/client_config/resolvers/sockaddr_resolver.c b/src/core/client_config/resolvers/sockaddr_resolver.c
new file mode 100644
index 0000000000..74584e7e2c
--- /dev/null
+++ b/src/core/client_config/resolvers/sockaddr_resolver.c
@@ -0,0 +1,299 @@
+/*
+ *
+ * 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 <grpc/support/port_platform.h>
+
+#include "src/core/client_config/resolvers/sockaddr_resolver.h"
+
+#include <stdio.h>
+#include <string.h>
+#ifdef GPR_POSIX_SOCKET
+#include <sys/un.h>
+#endif
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/client_config/lb_policies/pick_first.h"
+#include "src/core/iomgr/resolve_address.h"
+#include "src/core/support/string.h"
+
+typedef struct {
+  /** base class: must be first */
+  grpc_resolver base;
+  /** refcount */
+  gpr_refcount refs;
+  /** subchannel factory */
+  grpc_subchannel_factory *subchannel_factory;
+  /** load balancing policy factory */
+  grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
+                                       size_t num_subchannels);
+
+  /** the address that we've 'resolved' */
+  struct sockaddr_storage addr;
+  int addr_len;
+
+  /** mutex guarding the rest of the state */
+  gpr_mu mu;
+  /** have we published? */
+  int published;
+  /** pending next completion, or NULL */
+  grpc_iomgr_closure *next_completion;
+  /** target config address for next completion */
+  grpc_client_config **target_config;
+} sockaddr_resolver;
+
+static void sockaddr_destroy(grpc_resolver *r);
+
+static void sockaddr_maybe_finish_next_locked(sockaddr_resolver *r);
+
+static void sockaddr_shutdown(grpc_resolver *r);
+static void sockaddr_channel_saw_error(grpc_resolver *r,
+                                       struct sockaddr *failing_address,
+                                       int failing_address_len);
+static void sockaddr_next(grpc_resolver *r, grpc_client_config **target_config,
+                          grpc_iomgr_closure *on_complete);
+
+static const grpc_resolver_vtable sockaddr_resolver_vtable = {
+    sockaddr_destroy, sockaddr_shutdown, sockaddr_channel_saw_error,
+    sockaddr_next};
+
+static void sockaddr_shutdown(grpc_resolver *resolver) {
+  sockaddr_resolver *r = (sockaddr_resolver *)resolver;
+  gpr_mu_lock(&r->mu);
+  if (r->next_completion != NULL) {
+    *r->target_config = NULL;
+    /* TODO(ctiller): add delayed callback */
+    grpc_iomgr_add_callback(r->next_completion);
+    r->next_completion = NULL;
+  }
+  gpr_mu_unlock(&r->mu);
+}
+
+static void sockaddr_channel_saw_error(grpc_resolver *resolver,
+                                       struct sockaddr *sa, int len) {}
+
+static void sockaddr_next(grpc_resolver *resolver,
+                          grpc_client_config **target_config,
+                          grpc_iomgr_closure *on_complete) {
+  sockaddr_resolver *r = (sockaddr_resolver *)resolver;
+  gpr_mu_lock(&r->mu);
+  GPR_ASSERT(!r->next_completion);
+  r->next_completion = on_complete;
+  r->target_config = target_config;
+  sockaddr_maybe_finish_next_locked(r);
+  gpr_mu_unlock(&r->mu);
+}
+
+static void sockaddr_maybe_finish_next_locked(sockaddr_resolver *r) {
+  grpc_client_config *cfg;
+  grpc_lb_policy *lb_policy;
+  grpc_subchannel *subchannel;
+  grpc_subchannel_args args;
+
+  if (r->next_completion != NULL && !r->published) {
+    cfg = grpc_client_config_create();
+    memset(&args, 0, sizeof(args));
+    args.addr = (struct sockaddr *)&r->addr;
+    args.addr_len = r->addr_len;
+    subchannel =
+        grpc_subchannel_factory_create_subchannel(r->subchannel_factory, &args);
+    lb_policy = r->lb_policy_factory(&subchannel, 1);
+    grpc_client_config_set_lb_policy(cfg, lb_policy);
+    GRPC_LB_POLICY_UNREF(lb_policy, "unix");
+    r->published = 1;
+    *r->target_config = cfg;
+    grpc_iomgr_add_callback(r->next_completion);
+    r->next_completion = NULL;
+  }
+}
+
+static void sockaddr_destroy(grpc_resolver *gr) {
+  sockaddr_resolver *r = (sockaddr_resolver *)gr;
+  gpr_mu_destroy(&r->mu);
+  grpc_subchannel_factory_unref(r->subchannel_factory);
+  gpr_free(r);
+}
+
+#ifdef GPR_POSIX_SOCKET
+static int parse_unix(grpc_uri *uri, struct sockaddr_storage *addr, int *len) {
+  struct sockaddr_un *un = (struct sockaddr_un *)addr;
+
+  un->sun_family = AF_UNIX;
+  strcpy(un->sun_path, uri->path);
+  *len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
+
+  return 1;
+}
+#endif
+
+static int parse_ipv4(grpc_uri *uri, struct sockaddr_storage *addr, int *len) {
+  const char *host_port = uri->path;
+  char *host;
+  char *port;
+  int port_num;
+  int result = 0;
+  struct sockaddr_in *in = (struct sockaddr_in *)addr;
+
+  if (*host_port == '/') ++host_port;
+  if (!gpr_split_host_port(host_port, &host, &port)) {
+    return 0;
+  }
+
+  memset(in, 0, sizeof(*in));
+  *len = sizeof(*in);
+  in->sin_family = AF_INET;
+  if (inet_pton(AF_INET, host, &in->sin_addr) == 0) {
+    gpr_log(GPR_ERROR, "invalid ipv4 address: '%s'", host);
+    goto done;
+  }
+
+  if (port != NULL) {
+    if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 ||
+        port_num > 65535) {
+      gpr_log(GPR_ERROR, "invalid ipv4 port: '%s'", port);
+      goto done;
+    }
+    in->sin_port = htons(port_num);
+  } else {
+    gpr_log(GPR_ERROR, "no port given for ipv4 scheme");
+    goto done;
+  }
+
+  result = 1;
+done:
+  gpr_free(host);
+  gpr_free(port);
+  return result;
+}
+
+static int parse_ipv6(grpc_uri *uri, struct sockaddr_storage *addr, int *len) {
+  const char *host_port = uri->path;
+  char *host;
+  char *port;
+  int port_num;
+  int result = 0;
+  struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr;
+
+  if (*host_port == '/') ++host_port;
+  if (!gpr_split_host_port(host_port, &host, &port)) {
+    return 0;
+  }
+
+  memset(in6, 0, sizeof(*in6));
+  *len = sizeof(*in6);
+  in6->sin6_family = AF_INET6;
+  if (inet_pton(AF_INET6, host, &in6->sin6_addr) == 0) {
+    gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host);
+    goto done;
+  }
+
+  if (port != NULL) {
+    if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 ||
+        port_num > 65535) {
+      gpr_log(GPR_ERROR, "invalid ipv6 port: '%s'", port);
+      goto done;
+    }
+    in6->sin6_port = htons(port_num);
+  } else {
+    gpr_log(GPR_ERROR, "no port given for ipv6 scheme");
+    goto done;
+  }
+
+  result = 1;
+done:
+  gpr_free(host);
+  gpr_free(port);
+  return result;
+}
+
+static grpc_resolver *sockaddr_create(
+    grpc_uri *uri,
+    grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
+                                         size_t num_subchannels),
+    grpc_subchannel_factory *subchannel_factory,
+    int parse(grpc_uri *uri, struct sockaddr_storage *dst, int *len)) {
+  sockaddr_resolver *r;
+
+  if (0 != strcmp(uri->authority, "")) {
+    gpr_log(GPR_ERROR, "authority based uri's not supported");
+    return NULL;
+  }
+
+  r = gpr_malloc(sizeof(sockaddr_resolver));
+  memset(r, 0, sizeof(*r));
+  if (!parse(uri, &r->addr, &r->addr_len)) {
+    gpr_free(r);
+    return NULL;
+  }
+
+  gpr_ref_init(&r->refs, 1);
+  gpr_mu_init(&r->mu);
+  grpc_resolver_init(&r->base, &sockaddr_resolver_vtable);
+  r->subchannel_factory = subchannel_factory;
+  r->lb_policy_factory = lb_policy_factory;
+
+  grpc_subchannel_factory_ref(subchannel_factory);
+  return &r->base;
+}
+
+/*
+ * FACTORY
+ */
+
+static void sockaddr_factory_ref(grpc_resolver_factory *factory) {}
+
+static void sockaddr_factory_unref(grpc_resolver_factory *factory) {}
+
+#define DECL_FACTORY(name)                                            \
+  static grpc_resolver *name##_factory_create_resolver(               \
+      grpc_resolver_factory *factory, grpc_uri *uri,                  \
+      grpc_subchannel_factory *subchannel_factory) {                  \
+    return sockaddr_create(uri, grpc_create_pick_first_lb_policy,     \
+                           subchannel_factory, parse_##name);         \
+  }                                                                   \
+  static const grpc_resolver_factory_vtable name##_factory_vtable = { \
+      sockaddr_factory_ref, sockaddr_factory_unref,                   \
+      name##_factory_create_resolver};                                \
+  static grpc_resolver_factory name##_resolver_factory = {            \
+      &name##_factory_vtable};                                        \
+  grpc_resolver_factory *grpc_##name##_resolver_factory_create() {    \
+    return &name##_resolver_factory;                                  \
+  }
+
+#ifdef GPR_POSIX_SOCKET
+DECL_FACTORY(unix)
+#endif
+DECL_FACTORY(ipv4)
+DECL_FACTORY(ipv6)
diff --git a/src/core/client_config/resolvers/unix_resolver_posix.h b/src/core/client_config/resolvers/sockaddr_resolver.h
index 57ace59e21..1b7a18f9c2 100644
--- a/src/core/client_config/resolvers/unix_resolver_posix.h
+++ b/src/core/client_config/resolvers/sockaddr_resolver.h
@@ -38,7 +38,13 @@
 
 #include "src/core/client_config/resolver_factory.h"
 
+grpc_resolver_factory *grpc_ipv4_resolver_factory_create(void);
+
+grpc_resolver_factory *grpc_ipv6_resolver_factory_create(void);
+
+#ifdef GPR_POSIX_SOCKET
 /** Create a unix resolver factory */
 grpc_resolver_factory *grpc_unix_resolver_factory_create(void);
+#endif
 
 #endif /* GRPC_INTERNAL_CORE_CLIENT_CONFIG_RESOLVERS_UNIX_RESOLVER_H */
diff --git a/src/core/client_config/resolvers/unix_resolver_posix.c b/src/core/client_config/resolvers/unix_resolver_posix.c
deleted file mode 100644
index be515d2689..0000000000
--- a/src/core/client_config/resolvers/unix_resolver_posix.c
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- *
- * 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 <grpc/support/port_platform.h>
-#ifdef GPR_POSIX_SOCKET
-
-#include "src/core/client_config/resolvers/unix_resolver_posix.h"
-
-#include <string.h>
-#include <sys/un.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/string_util.h>
-
-#include "src/core/client_config/lb_policies/pick_first.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/support/string.h"
-
-typedef struct {
-  /** base class: must be first */
-  grpc_resolver base;
-  /** refcount */
-  gpr_refcount refs;
-  /** subchannel factory */
-  grpc_subchannel_factory *subchannel_factory;
-  /** load balancing policy factory */
-  grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
-                                       size_t num_subchannels);
-
-  /** the address that we've 'resolved' */
-  struct sockaddr_un addr;
-  int addr_len;
-
-  /** mutex guarding the rest of the state */
-  gpr_mu mu;
-  /** have we published? */
-  int published;
-  /** pending next completion, or NULL */
-  grpc_iomgr_closure *next_completion;
-  /** target config address for next completion */
-  grpc_client_config **target_config;
-} unix_resolver;
-
-static void unix_destroy(grpc_resolver *r);
-
-static void unix_maybe_finish_next_locked(unix_resolver *r);
-
-static void unix_shutdown(grpc_resolver *r);
-static void unix_channel_saw_error(grpc_resolver *r,
-                                   struct sockaddr *failing_address,
-                                   int failing_address_len);
-static void unix_next(grpc_resolver *r, grpc_client_config **target_config,
-                      grpc_iomgr_closure *on_complete);
-
-static const grpc_resolver_vtable unix_resolver_vtable = {
-    unix_destroy, unix_shutdown, unix_channel_saw_error, unix_next};
-
-static void unix_shutdown(grpc_resolver *resolver) {
-  unix_resolver *r = (unix_resolver *)resolver;
-  gpr_mu_lock(&r->mu);
-  if (r->next_completion != NULL) {
-    *r->target_config = NULL;
-    /* TODO(ctiller): add delayed callback */
-    grpc_iomgr_add_callback(r->next_completion);
-    r->next_completion = NULL;
-  }
-  gpr_mu_unlock(&r->mu);
-}
-
-static void unix_channel_saw_error(grpc_resolver *resolver, struct sockaddr *sa,
-                                   int len) {}
-
-static void unix_next(grpc_resolver *resolver,
-                      grpc_client_config **target_config,
-                      grpc_iomgr_closure *on_complete) {
-  unix_resolver *r = (unix_resolver *)resolver;
-  gpr_mu_lock(&r->mu);
-  GPR_ASSERT(!r->next_completion);
-  r->next_completion = on_complete;
-  r->target_config = target_config;
-  unix_maybe_finish_next_locked(r);
-  gpr_mu_unlock(&r->mu);
-}
-
-static void unix_maybe_finish_next_locked(unix_resolver *r) {
-  grpc_client_config *cfg;
-  grpc_lb_policy *lb_policy;
-  grpc_subchannel *subchannel;
-  grpc_subchannel_args args;
-
-  if (r->next_completion != NULL && !r->published) {
-    cfg = grpc_client_config_create();
-    memset(&args, 0, sizeof(args));
-    args.addr = (struct sockaddr *)&r->addr;
-    args.addr_len = r->addr_len;
-    subchannel =
-        grpc_subchannel_factory_create_subchannel(r->subchannel_factory, &args);
-    lb_policy = r->lb_policy_factory(&subchannel, 1);
-    grpc_client_config_set_lb_policy(cfg, lb_policy);
-    GRPC_LB_POLICY_UNREF(lb_policy, "unix");
-    r->published = 1;
-    *r->target_config = cfg;
-    grpc_iomgr_add_callback(r->next_completion);
-    r->next_completion = NULL;
-  }
-}
-
-static void unix_destroy(grpc_resolver *gr) {
-  unix_resolver *r = (unix_resolver *)gr;
-  gpr_mu_destroy(&r->mu);
-  grpc_subchannel_factory_unref(r->subchannel_factory);
-  gpr_free(r);
-}
-
-static grpc_resolver *unix_create(
-    grpc_uri *uri,
-    grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels,
-                                         size_t num_subchannels),
-    grpc_subchannel_factory *subchannel_factory) {
-  unix_resolver *r;
-
-  if (0 != strcmp(uri->authority, "")) {
-    gpr_log(GPR_ERROR, "authority based uri's not supported");
-    return NULL;
-  }
-
-  r = gpr_malloc(sizeof(unix_resolver));
-  memset(r, 0, sizeof(*r));
-  gpr_ref_init(&r->refs, 1);
-  gpr_mu_init(&r->mu);
-  grpc_resolver_init(&r->base, &unix_resolver_vtable);
-  r->subchannel_factory = subchannel_factory;
-  r->lb_policy_factory = lb_policy_factory;
-
-  r->addr.sun_family = AF_UNIX;
-  strcpy(r->addr.sun_path, uri->path);
-  r->addr_len = strlen(r->addr.sun_path) + sizeof(r->addr.sun_family) + 1;
-
-  grpc_subchannel_factory_ref(subchannel_factory);
-  return &r->base;
-}
-
-/*
- * FACTORY
- */
-
-static void unix_factory_ref(grpc_resolver_factory *factory) {}
-
-static void unix_factory_unref(grpc_resolver_factory *factory) {}
-
-static grpc_resolver *unix_factory_create_resolver(
-    grpc_resolver_factory *factory, grpc_uri *uri,
-    grpc_subchannel_factory *subchannel_factory) {
-  return unix_create(uri, grpc_create_pick_first_lb_policy, subchannel_factory);
-}
-
-static const grpc_resolver_factory_vtable unix_factory_vtable = {
-    unix_factory_ref, unix_factory_unref, unix_factory_create_resolver};
-static grpc_resolver_factory unix_resolver_factory = {&unix_factory_vtable};
-
-grpc_resolver_factory *grpc_unix_resolver_factory_create() {
-  return &unix_resolver_factory;
-}
-
-#endif
diff --git a/src/core/client_config/subchannel.c b/src/core/client_config/subchannel.c
index 487f5afb35..358b907e59 100644
--- a/src/core/client_config/subchannel.c
+++ b/src/core/client_config/subchannel.c
@@ -640,6 +640,12 @@ void grpc_subchannel_call_unref(
   }
 }
 
+char *grpc_subchannel_call_get_peer(grpc_subchannel_call *call) {
+  grpc_call_stack *call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call);
+  grpc_call_element *top_elem = grpc_call_stack_element(call_stack, 0);
+  return top_elem->filter->get_peer(top_elem);
+}
+
 void grpc_subchannel_call_process_op(grpc_subchannel_call *call,
                                      grpc_transport_stream_op *op) {
   grpc_call_stack *call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call);
diff --git a/src/core/client_config/subchannel.h b/src/core/client_config/subchannel.h
index a23a623277..d1cd33b2af 100644
--- a/src/core/client_config/subchannel.h
+++ b/src/core/client_config/subchannel.h
@@ -100,6 +100,9 @@ void grpc_subchannel_del_interested_party(grpc_subchannel *channel,
 void grpc_subchannel_call_process_op(grpc_subchannel_call *subchannel_call,
                                      grpc_transport_stream_op *op);
 
+/** continue querying for peer */
+char *grpc_subchannel_call_get_peer(grpc_subchannel_call *subchannel_call);
+
 struct grpc_subchannel_args {
   /** Channel filters for this channel - wrapped factories will likely
       want to mutate this */
diff --git a/src/core/iomgr/endpoint.c b/src/core/iomgr/endpoint.c
index 96487958a7..f2b44aad03 100644
--- a/src/core/iomgr/endpoint.c
+++ b/src/core/iomgr/endpoint.c
@@ -53,3 +53,7 @@ void grpc_endpoint_add_to_pollset(grpc_endpoint *ep, grpc_pollset *pollset) {
 void grpc_endpoint_shutdown(grpc_endpoint *ep) { ep->vtable->shutdown(ep); }
 
 void grpc_endpoint_destroy(grpc_endpoint *ep) { ep->vtable->destroy(ep); }
+
+char *grpc_endpoint_get_peer(grpc_endpoint *ep) {
+  return ep->vtable->get_peer(ep);
+}
diff --git a/src/core/iomgr/endpoint.h b/src/core/iomgr/endpoint.h
index 881e851800..ee0becf3d6 100644
--- a/src/core/iomgr/endpoint.h
+++ b/src/core/iomgr/endpoint.h
@@ -72,12 +72,15 @@ struct grpc_endpoint_vtable {
   void (*add_to_pollset)(grpc_endpoint *ep, grpc_pollset *pollset);
   void (*shutdown)(grpc_endpoint *ep);
   void (*destroy)(grpc_endpoint *ep);
+  char *(*get_peer)(grpc_endpoint *ep);
 };
 
 /* When data is available on the connection, calls the callback with slices. */
 void grpc_endpoint_notify_on_read(grpc_endpoint *ep, grpc_endpoint_read_cb cb,
                                   void *user_data);
 
+char *grpc_endpoint_get_peer(grpc_endpoint *ep);
+
 /* Write slices out to the socket.
 
    If the connection is ready for more data after the end of the call, it
diff --git a/src/core/iomgr/endpoint_pair_posix.c b/src/core/iomgr/endpoint_pair_posix.c
index fa2d2555d6..deae9c6875 100644
--- a/src/core/iomgr/endpoint_pair_posix.c
+++ b/src/core/iomgr/endpoint_pair_posix.c
@@ -66,12 +66,12 @@ grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char *name,
   create_sockets(sv);
 
   gpr_asprintf(&final_name, "%s:client", name);
-  p.client =
-      grpc_tcp_create(grpc_fd_create(sv[1], final_name), read_slice_size);
+  p.client = grpc_tcp_create(grpc_fd_create(sv[1], final_name), read_slice_size,
+                             "socketpair-server");
   gpr_free(final_name);
   gpr_asprintf(&final_name, "%s:server", name);
-  p.server =
-      grpc_tcp_create(grpc_fd_create(sv[0], final_name), read_slice_size);
+  p.server = grpc_tcp_create(grpc_fd_create(sv[0], final_name), read_slice_size,
+                             "socketpair-client");
   gpr_free(final_name);
   return p;
 }
diff --git a/src/core/iomgr/endpoint_pair_windows.c b/src/core/iomgr/endpoint_pair_windows.c
index c6790b2937..7d81470a78 100644
--- a/src/core/iomgr/endpoint_pair_windows.c
+++ b/src/core/iomgr/endpoint_pair_windows.c
@@ -81,8 +81,8 @@ grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char *name, size_t read
   SOCKET sv[2];
   grpc_endpoint_pair p;
   create_sockets(sv);
-  p.client = grpc_tcp_create(grpc_winsocket_create(sv[1], "endpoint:client"));
-  p.server = grpc_tcp_create(grpc_winsocket_create(sv[0], "endpoint:server"));
+  p.client = grpc_tcp_create(grpc_winsocket_create(sv[1], "endpoint:client"), "endpoint:server");
+  p.server = grpc_tcp_create(grpc_winsocket_create(sv[0], "endpoint:server"), "endpoint:client");
   return p;
 }
 
diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c
index a18c176b30..aa4bc6e20d 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/iomgr/iomgr.c
@@ -88,6 +88,7 @@ void grpc_kick_poller(void) {
 
 void grpc_iomgr_init(void) {
   gpr_thd_id id;
+  g_shutdown = 0;
   gpr_mu_init(&g_mu);
   gpr_cv_init(&g_rcv);
   grpc_alarm_list_init(gpr_now(GPR_CLOCK_MONOTONIC));
diff --git a/src/core/iomgr/sockaddr_utils.c b/src/core/iomgr/sockaddr_utils.c
index e91b94f8c8..71ac12e87b 100644
--- a/src/core/iomgr/sockaddr_utils.c
+++ b/src/core/iomgr/sockaddr_utils.c
@@ -36,12 +36,18 @@
 #include <errno.h>
 #include <string.h>
 
-#include "src/core/support/string.h"
+#ifdef GPR_POSIX_SOCKET
+#include <sys/un.h>
+#endif
+
+#include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/support/string.h"
+
 static const gpr_uint8 kV4MappedPrefix[] = {0, 0, 0, 0, 0,    0,
                                             0, 0, 0, 0, 0xff, 0xff};
 
@@ -161,6 +167,31 @@ int grpc_sockaddr_to_string(char **out, const struct sockaddr *addr,
   return ret;
 }
 
+char *grpc_sockaddr_to_uri(const struct sockaddr *addr) {
+  char *temp;
+  char *result;
+
+  switch (addr->sa_family) {
+    case AF_INET:
+      grpc_sockaddr_to_string(&temp, addr, 0);
+      gpr_asprintf(&result, "ipv4:%s", temp);
+      gpr_free(temp);
+      return result;
+    case AF_INET6:
+      grpc_sockaddr_to_string(&temp, addr, 0);
+      gpr_asprintf(&result, "ipv6:%s", temp);
+      gpr_free(temp);
+      return result;
+#ifdef GPR_POSIX_SOCKET
+    case AF_UNIX:
+      gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path);
+      return result;
+#endif
+  }
+
+  return NULL;
+}
+
 int grpc_sockaddr_get_port(const struct sockaddr *addr) {
   switch (addr->sa_family) {
     case AF_INET:
diff --git a/src/core/iomgr/sockaddr_utils.h b/src/core/iomgr/sockaddr_utils.h
index bdfb83479b..99f1ed54da 100644
--- a/src/core/iomgr/sockaddr_utils.h
+++ b/src/core/iomgr/sockaddr_utils.h
@@ -84,4 +84,6 @@ int grpc_sockaddr_set_port(const struct sockaddr *addr, int port);
 int grpc_sockaddr_to_string(char **out, const struct sockaddr *addr,
                             int normalize);
 
+char *grpc_sockaddr_to_uri(const struct sockaddr *addr);
+
 #endif  /* GRPC_INTERNAL_CORE_IOMGR_SOCKADDR_UTILS_H */
diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/iomgr/tcp_client_posix.c
index 41d8b169e0..392eda999e 100644
--- a/src/core/iomgr/tcp_client_posix.c
+++ b/src/core/iomgr/tcp_client_posix.c
@@ -64,6 +64,7 @@ typedef struct {
   int refs;
   grpc_iomgr_closure write_closure;
   grpc_pollset_set *interested_parties;
+  char *addr_str;
 } async_connect;
 
 static int prepare_socket(const struct sockaddr *addr, int fd) {
@@ -99,6 +100,7 @@ static void on_alarm(void *acp, int success) {
   gpr_mu_unlock(&ac->mu);
   if (done) {
     gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_str);
     gpr_free(ac);
   }
 }
@@ -158,7 +160,8 @@ static void on_writable(void *acp, int success) {
       }
     } else {
       grpc_pollset_set_del_fd(ac->interested_parties, ac->fd);
-      ep = grpc_tcp_create(ac->fd, GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+      ep = grpc_tcp_create(ac->fd, GRPC_TCP_DEFAULT_READ_SLICE_SIZE,
+                           ac->addr_str);
       goto finish;
     }
   } else {
@@ -179,6 +182,7 @@ finish:
   gpr_mu_unlock(&ac->mu);
   if (done) {
     gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_str);
     gpr_free(ac);
   }
   cb(cb_arg, ep);
@@ -223,13 +227,13 @@ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *ep),
     err = connect(fd, addr, addr_len);
   } while (err < 0 && errno == EINTR);
 
-  grpc_sockaddr_to_string(&addr_str, addr, 1);
+  addr_str = grpc_sockaddr_to_uri(addr);
   gpr_asprintf(&name, "tcp-client:%s", addr_str);
 
   fdobj = grpc_fd_create(fd, name);
 
   if (err >= 0) {
-    cb(arg, grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE));
+    cb(arg, grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str));
     goto done;
   }
 
@@ -247,6 +251,8 @@ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *ep),
   ac->cb_arg = arg;
   ac->fd = fdobj;
   ac->interested_parties = interested_parties;
+  ac->addr_str = addr_str;
+  addr_str = NULL;
   gpr_mu_init(&ac->mu);
   ac->refs = 2;
   ac->write_closure.cb = on_writable;
diff --git a/src/core/iomgr/tcp_client_windows.c b/src/core/iomgr/tcp_client_windows.c
index 39fd43130b..79a58fe2af 100644
--- a/src/core/iomgr/tcp_client_windows.c
+++ b/src/core/iomgr/tcp_client_windows.c
@@ -58,6 +58,7 @@ typedef struct {
   grpc_winsocket *socket;
   gpr_timespec deadline;
   grpc_alarm alarm;
+  char *addr_name;
   int refs;
   int aborted;
 } async_connect;
@@ -67,6 +68,7 @@ static void async_connect_cleanup(async_connect *ac) {
   gpr_mu_unlock(&ac->mu);
   if (done) {
     gpr_mu_destroy(&ac->mu);
+    gpr_free(ac->addr_name);
     gpr_free(ac);
   }
 }
@@ -107,7 +109,7 @@ static void on_connect(void *acp, int from_iocp) {
       gpr_log(GPR_ERROR, "on_connect error: %s", utf8_message);
       gpr_free(utf8_message);
     } else if (!aborted) {
-      ep = grpc_tcp_create(ac->socket);
+      ep = grpc_tcp_create(ac->socket, ac->addr_name);
     }
   } else {
     gpr_log(GPR_ERROR, "on_connect is shutting down");
@@ -213,6 +215,7 @@ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *tcp),
   ac->socket = socket;
   gpr_mu_init(&ac->mu);
   ac->refs = 2;
+  ac->addr_name = grpc_sockaddr_to_uri(addr);
   ac->aborted = 0;
 
   grpc_alarm_init(&ac->alarm, deadline, on_alarm, ac,
diff --git a/src/core/iomgr/tcp_posix.c b/src/core/iomgr/tcp_posix.c
index b6d6efc9fb..63a8a2720e 100644
--- a/src/core/iomgr/tcp_posix.c
+++ b/src/core/iomgr/tcp_posix.c
@@ -44,15 +44,17 @@
 #include <sys/socket.h>
 #include <unistd.h>
 
-#include "src/core/support/string.h"
-#include "src/core/debug/trace.h"
-#include "src/core/profiling/timers.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/slice.h>
+#include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
+#include "src/core/support/string.h"
+#include "src/core/debug/trace.h"
+#include "src/core/profiling/timers.h"
+
 #ifdef GPR_HAVE_MSG_NOSIGNAL
 #define SENDMSG_FLAGS MSG_NOSIGNAL
 #else
@@ -282,6 +284,8 @@ typedef struct {
   grpc_iomgr_closure write_closure;
 
   grpc_iomgr_closure handle_read_closure;
+
+  char *peer_string;
 } grpc_tcp;
 
 static void grpc_tcp_handle_read(void *arg /* grpc_tcp */, int success);
@@ -296,6 +300,7 @@ static void grpc_tcp_unref(grpc_tcp *tcp) {
   int refcount_zero = gpr_unref(&tcp->refcount);
   if (refcount_zero) {
     grpc_fd_orphan(tcp->em_fd, NULL, "tcp_unref_orphan");
+    gpr_free(tcp->peer_string);
     gpr_free(tcp);
   }
 }
@@ -314,7 +319,7 @@ static void call_read_cb(grpc_tcp *tcp, gpr_slice *slices, size_t nslices,
     gpr_log(GPR_DEBUG, "read: status=%d", status);
     for (i = 0; i < nslices; i++) {
       char *dump = gpr_dump_slice(slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
-      gpr_log(GPR_DEBUG, "READ: %s", dump);
+      gpr_log(GPR_DEBUG, "READ %p: %s", tcp, dump);
       gpr_free(dump);
     }
   }
@@ -443,7 +448,7 @@ static void grpc_tcp_notify_on_read(grpc_endpoint *ep, grpc_endpoint_read_cb cb,
     grpc_fd_notify_on_read(tcp->em_fd, &tcp->read_closure);
   } else {
     tcp->handle_read_closure.cb_arg = tcp;
-    grpc_iomgr_add_callback(&tcp->handle_read_closure);
+    grpc_iomgr_add_delayed_callback(&tcp->handle_read_closure, 1);
   }
 }
 
@@ -567,13 +572,20 @@ static void grpc_tcp_add_to_pollset(grpc_endpoint *ep, grpc_pollset *pollset) {
   grpc_pollset_add_fd(pollset, tcp->em_fd);
 }
 
+static char *grpc_tcp_get_peer(grpc_endpoint *ep) {
+  grpc_tcp *tcp = (grpc_tcp *)ep;
+  return gpr_strdup(tcp->peer_string);
+}
+
 static const grpc_endpoint_vtable vtable = {
-    grpc_tcp_notify_on_read, grpc_tcp_write, grpc_tcp_add_to_pollset,
-    grpc_tcp_shutdown, grpc_tcp_destroy};
+    grpc_tcp_notify_on_read, grpc_tcp_write,   grpc_tcp_add_to_pollset,
+    grpc_tcp_shutdown,       grpc_tcp_destroy, grpc_tcp_get_peer};
 
-grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size) {
+grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size,
+                               const char *peer_string) {
   grpc_tcp *tcp = (grpc_tcp *)gpr_malloc(sizeof(grpc_tcp));
   tcp->base.vtable = &vtable;
+  tcp->peer_string = gpr_strdup(peer_string);
   tcp->fd = em_fd->fd;
   tcp->read_cb = NULL;
   tcp->write_cb = NULL;
diff --git a/src/core/iomgr/tcp_posix.h b/src/core/iomgr/tcp_posix.h
index 44279d5a26..d752feaeea 100644
--- a/src/core/iomgr/tcp_posix.h
+++ b/src/core/iomgr/tcp_posix.h
@@ -53,6 +53,7 @@ extern int grpc_tcp_trace;
 
 /* Create a tcp endpoint given a file desciptor and a read slice size.
    Takes ownership of fd. */
-grpc_endpoint *grpc_tcp_create(grpc_fd *fd, size_t read_slice_size);
+grpc_endpoint *grpc_tcp_create(grpc_fd *fd, size_t read_slice_size,
+                               const char *peer_string);
 
 #endif  /* GRPC_INTERNAL_CORE_IOMGR_TCP_POSIX_H */
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c
index 5854031c9b..8538600112 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/iomgr/tcp_server_posix.c
@@ -332,7 +332,7 @@ static void on_read(void *arg, int success) {
 
     grpc_set_socket_no_sigpipe_if_possible(fd);
 
-    grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1);
+    addr_str = grpc_sockaddr_to_uri((struct sockaddr *)&addr);
     gpr_asprintf(&name, "tcp-server-connection:%s", addr_str);
 
     fdobj = grpc_fd_create(fd, name);
@@ -342,8 +342,9 @@ static void on_read(void *arg, int success) {
     for (i = 0; i < sp->server->pollset_count; i++) {
       grpc_pollset_add_fd(sp->server->pollsets[i], fdobj);
     }
-    sp->server->cb(sp->server->cb_arg,
-                   grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE));
+    sp->server->cb(
+        sp->server->cb_arg,
+        grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str));
 
     gpr_free(name);
     gpr_free(addr_str);
diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/iomgr/tcp_server_windows.c
index 187009b2c8..cc680507ff 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/iomgr/tcp_server_windows.c
@@ -243,9 +243,14 @@ static void on_accept(void *arg, int from_iocp) {
   SOCKET sock = sp->new_socket;
   grpc_winsocket_callback_info *info = &sp->socket->read_info;
   grpc_endpoint *ep = NULL;
+  struct sockaddr_storage peer_name;
+  char *peer_name_string;
+  char *fd_name;
+  int peer_name_len = sizeof(peer_name);
   DWORD transfered_bytes;
   DWORD flags;
   BOOL wsa_success;
+  int err;
 
   /* The general mechanism for shutting down is to queue abortion calls. While
      this is necessary in the read/write case, it's useless for the accept
@@ -277,8 +282,28 @@ static void on_accept(void *arg, int from_iocp) {
     }
   } else {
     if (!sp->shutting_down) {
-      /* TODO(ctiller): add sockaddr address to label */
-      ep = grpc_tcp_create(grpc_winsocket_create(sock, "server"));
+      peer_name_string = NULL;
+      err = setsockopt(sock, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
+                       (char *)&sp->socket->socket,
+                       sizeof(sp->socket->socket));
+      if (err) {
+        char *utf8_message = gpr_format_message(WSAGetLastError());
+        gpr_log(GPR_ERROR, "setsockopt error: %s", utf8_message);
+        gpr_free(utf8_message);
+      }
+      err = getpeername(sock, (struct sockaddr*)&peer_name, &peer_name_len);
+      if (!err) {
+        peer_name_string = grpc_sockaddr_to_uri((struct sockaddr*)&peer_name);
+      } else {
+        char *utf8_message = gpr_format_message(WSAGetLastError());
+        gpr_log(GPR_ERROR, "getpeername error: %s", utf8_message);
+        gpr_free(utf8_message);
+      }
+      gpr_asprintf(&fd_name, "tcp_server:%s", peer_name_string);
+      ep = grpc_tcp_create(grpc_winsocket_create(sock, fd_name),
+                           peer_name_string);
+      gpr_free(fd_name);
+      gpr_free(peer_name_string);
     }
   }
 
diff --git a/src/core/iomgr/tcp_windows.c b/src/core/iomgr/tcp_windows.c
index 1bf81a73e0..d68e6aee79 100644
--- a/src/core/iomgr/tcp_windows.c
+++ b/src/core/iomgr/tcp_windows.c
@@ -96,6 +96,8 @@ typedef struct grpc_tcp {
      to protect ourselves when requesting a shutdown. */
   gpr_mu mu;
   int shutting_down;
+
+  char *peer_string;
 } grpc_tcp;
 
 static void tcp_ref(grpc_tcp *tcp) {
@@ -107,6 +109,7 @@ static void tcp_unref(grpc_tcp *tcp) {
     gpr_slice_buffer_destroy(&tcp->write_slices);
     grpc_winsocket_orphan(tcp->socket);
     gpr_mu_destroy(&tcp->mu);
+    gpr_free(tcp->peer_string);
     gpr_free(tcp);
   }
 }
@@ -393,11 +396,16 @@ static void win_destroy(grpc_endpoint *ep) {
   tcp_unref(tcp);
 }
 
+static char *win_get_peer(grpc_endpoint *ep) {
+  grpc_tcp *tcp = (grpc_tcp *)ep;
+  return gpr_strdup(tcp->peer_string);
+}
+
 static grpc_endpoint_vtable vtable = {
-  win_notify_on_read, win_write, win_add_to_pollset, win_shutdown, win_destroy
+  win_notify_on_read, win_write, win_add_to_pollset, win_shutdown, win_destroy, win_get_peer
 };
 
-grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket) {
+grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string) {
   grpc_tcp *tcp = (grpc_tcp *) gpr_malloc(sizeof(grpc_tcp));
   memset(tcp, 0, sizeof(grpc_tcp));
   tcp->base.vtable = &vtable;
@@ -405,6 +413,7 @@ grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket) {
   gpr_mu_init(&tcp->mu);
   gpr_slice_buffer_init(&tcp->write_slices);
   gpr_ref_init(&tcp->refcount, 1);
+  tcp->peer_string = gpr_strdup(peer_string);
   return &tcp->base;
 }
 
diff --git a/src/core/iomgr/tcp_windows.h b/src/core/iomgr/tcp_windows.h
index 4cbc12c53a..7e301db250 100644
--- a/src/core/iomgr/tcp_windows.h
+++ b/src/core/iomgr/tcp_windows.h
@@ -50,7 +50,7 @@
 /* Create a tcp endpoint given a winsock handle.
  * Takes ownership of the handle.
  */
-grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket);
+grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string);
 
 int grpc_tcp_prepare_socket(SOCKET sock);
 
diff --git a/src/core/security/client_auth_filter.c b/src/core/security/client_auth_filter.c
index 9e49a807f1..e86b5430b2 100644
--- a/src/core/security/client_auth_filter.c
+++ b/src/core/security/client_auth_filter.c
@@ -80,7 +80,7 @@ static void bubble_up_error(grpc_call_element *elem, const char *error_msg) {
   channel_data *chand = elem->channel_data;
   grpc_transport_stream_op_add_cancellation(
       &calld->op, GRPC_STATUS_UNAUTHENTICATED,
-      grpc_mdstr_from_string(chand->md_ctx, error_msg));
+      grpc_mdstr_from_string(chand->md_ctx, error_msg, 0));
   grpc_call_next_op(elem, &calld->op);
 }
 
@@ -316,10 +316,10 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
       (grpc_channel_security_connector *)GRPC_SECURITY_CONNECTOR_REF(
           sc, "client_auth_filter");
   chand->md_ctx = metadata_context;
-  chand->authority_string = grpc_mdstr_from_string(chand->md_ctx, ":authority");
-  chand->path_string = grpc_mdstr_from_string(chand->md_ctx, ":path");
-  chand->error_msg_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-message");
-  chand->status_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-status");
+  chand->authority_string = grpc_mdstr_from_string(chand->md_ctx, ":authority", 0);
+  chand->path_string = grpc_mdstr_from_string(chand->md_ctx, ":path", 0);
+  chand->error_msg_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-message", 0);
+  chand->status_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-status", 0);
 }
 
 /* Destructor for channel data */
@@ -344,6 +344,8 @@ static void destroy_channel_elem(grpc_channel_element *elem) {
 }
 
 const grpc_channel_filter grpc_client_auth_filter = {
-    auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem,          destroy_call_elem,    sizeof(channel_data),
-    init_channel_elem,       destroy_channel_elem, "client-auth"};
+    auth_start_transport_op, grpc_channel_next_op,
+    sizeof(call_data),       init_call_elem,
+    destroy_call_elem,       sizeof(channel_data),
+    init_channel_elem,       destroy_channel_elem,
+    grpc_call_next_get_peer, "client-auth"};
diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c
index a4d998a429..15268cefbe 100644
--- a/src/core/security/credentials.c
+++ b/src/core/security/credentials.c
@@ -317,7 +317,7 @@ grpc_server_credentials *grpc_ssl_server_credentials_create(
 
 /* -- Jwt credentials -- */
 
-static void jwt_reset_cache(grpc_jwt_credentials *c) {
+static void jwt_reset_cache(grpc_service_account_jwt_access_credentials *c) {
   if (c->cached.jwt_md != NULL) {
     grpc_credentials_md_store_unref(c->cached.jwt_md);
     c->cached.jwt_md = NULL;
@@ -330,7 +330,8 @@ static void jwt_reset_cache(grpc_jwt_credentials *c) {
 }
 
 static void jwt_destroy(grpc_credentials *creds) {
-  grpc_jwt_credentials *c = (grpc_jwt_credentials *)creds;
+  grpc_service_account_jwt_access_credentials *c =
+      (grpc_service_account_jwt_access_credentials *)creds;
   grpc_auth_json_key_destruct(&c->key);
   jwt_reset_cache(c);
   gpr_mu_destroy(&c->cache_mu);
@@ -348,7 +349,8 @@ static void jwt_get_request_metadata(grpc_credentials *creds,
                                      const char *service_url,
                                      grpc_credentials_metadata_cb cb,
                                      void *user_data) {
-  grpc_jwt_credentials *c = (grpc_jwt_credentials *)creds;
+  grpc_service_account_jwt_access_credentials *c =
+      (grpc_service_account_jwt_access_credentials *)creds;
   gpr_timespec refresh_threshold = gpr_time_from_seconds(
       GRPC_SECURE_TOKEN_REFRESH_THRESHOLD_SECS, GPR_TIMESPAN);
 
@@ -401,15 +403,16 @@ static grpc_credentials_vtable jwt_vtable = {
     jwt_destroy, jwt_has_request_metadata, jwt_has_request_metadata_only,
     jwt_get_request_metadata, NULL};
 
-grpc_credentials *grpc_jwt_credentials_create_from_auth_json_key(
+grpc_credentials *
+grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
     grpc_auth_json_key key, gpr_timespec token_lifetime) {
-  grpc_jwt_credentials *c;
+  grpc_service_account_jwt_access_credentials *c;
   if (!grpc_auth_json_key_is_valid(&key)) {
     gpr_log(GPR_ERROR, "Invalid input for jwt credentials creation");
     return NULL;
   }
-  c = gpr_malloc(sizeof(grpc_jwt_credentials));
-  memset(c, 0, sizeof(grpc_jwt_credentials));
+  c = gpr_malloc(sizeof(grpc_service_account_jwt_access_credentials));
+  memset(c, 0, sizeof(grpc_service_account_jwt_access_credentials));
   c->base.type = GRPC_CREDENTIALS_TYPE_JWT;
   gpr_ref_init(&c->base.refcount, 1);
   c->base.vtable = &jwt_vtable;
@@ -420,9 +423,9 @@ grpc_credentials *grpc_jwt_credentials_create_from_auth_json_key(
   return &c->base;
 }
 
-grpc_credentials *grpc_jwt_credentials_create(const char *json_key,
-                                              gpr_timespec token_lifetime) {
-  return grpc_jwt_credentials_create_from_auth_json_key(
+grpc_credentials *grpc_service_account_jwt_access_credentials_create(
+    const char *json_key, gpr_timespec token_lifetime) {
+  return grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
       grpc_auth_json_key_create_from_string(json_key), token_lifetime);
 }
 
diff --git a/src/core/security/credentials.h b/src/core/security/credentials.h
index d988901cf7..8d40da47c1 100644
--- a/src/core/security/credentials.h
+++ b/src/core/security/credentials.h
@@ -52,6 +52,8 @@ typedef enum {
   GRPC_CREDENTIALS_ERROR
 } grpc_credentials_status;
 
+#define GRPC_FAKE_TRANSPORT_SECURITY_TYPE "fake"
+
 #define GRPC_CREDENTIALS_TYPE_SSL "Ssl"
 #define GRPC_CREDENTIALS_TYPE_OAUTH2 "Oauth2"
 #define GRPC_CREDENTIALS_TYPE_JWT "Jwt"
@@ -112,6 +114,12 @@ void grpc_credentials_md_store_unref(grpc_credentials_md_store *store);
 
 /* --- grpc_credentials. --- */
 
+/* Creates a fake transport security credentials object for testing. */
+grpc_credentials *grpc_fake_transport_security_credentials_create(void);
+/* Creates a fake server transport security credentials object for testing. */
+grpc_server_credentials *grpc_fake_transport_security_server_credentials_create(
+    void);
+
 /* It is the caller's responsibility to gpr_free the result if not NULL. */
 char *grpc_get_well_known_google_credentials_file_path(void);
 
@@ -188,7 +196,8 @@ grpc_credentials *grpc_fake_oauth2_credentials_create(
 
 /* Private constructor for jwt credentials from an already parsed json key.
    Takes ownership of the key. */
-grpc_credentials *grpc_jwt_credentials_create_from_auth_json_key(
+grpc_credentials *
+grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
     grpc_auth_json_key key, gpr_timespec token_lifetime);
 
 /* Private constructor for refresh token credentials from an already parsed
@@ -240,7 +249,7 @@ typedef struct {
 
   grpc_auth_json_key key;
   gpr_timespec jwt_lifetime;
-} grpc_jwt_credentials;
+} grpc_service_account_jwt_access_credentials;
 
 /* -- Oauth2TokenFetcher credentials --
 
diff --git a/src/core/security/google_default_credentials.c b/src/core/security/google_default_credentials.c
index 833484310f..de1929fe76 100644
--- a/src/core/security/google_default_credentials.c
+++ b/src/core/security/google_default_credentials.c
@@ -140,8 +140,9 @@ static grpc_credentials *create_default_creds_from_path(char *creds_path) {
   /* First, try an auth json key. */
   key = grpc_auth_json_key_create_from_json(json);
   if (grpc_auth_json_key_is_valid(&key)) {
-    result = grpc_jwt_credentials_create_from_auth_json_key(
-        key, grpc_max_auth_token_lifetime);
+    result =
+        grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
+            key, grpc_max_auth_token_lifetime);
     goto end;
   }
 
diff --git a/src/core/security/secure_endpoint.c b/src/core/security/secure_endpoint.c
index 3548198046..e189380ec5 100644
--- a/src/core/security/secure_endpoint.c
+++ b/src/core/security/secure_endpoint.c
@@ -331,9 +331,14 @@ static void endpoint_add_to_pollset(grpc_endpoint *secure_ep,
   grpc_endpoint_add_to_pollset(ep->wrapped_ep, pollset);
 }
 
+static char *endpoint_get_peer(grpc_endpoint *secure_ep) {
+  secure_endpoint *ep = (secure_endpoint *)secure_ep;
+  return grpc_endpoint_get_peer(ep->wrapped_ep);
+}
+
 static const grpc_endpoint_vtable vtable = {
     endpoint_notify_on_read, endpoint_write, endpoint_add_to_pollset,
-    endpoint_shutdown, endpoint_unref};
+    endpoint_shutdown,       endpoint_unref, endpoint_get_peer};
 
 grpc_endpoint *grpc_secure_endpoint_create(
     struct tsi_frame_protector *protector, grpc_endpoint *transport,
diff --git a/src/core/security/server_auth_filter.c b/src/core/security/server_auth_filter.c
index 10eef6d237..69789c2f0d 100644
--- a/src/core/security/server_auth_filter.c
+++ b/src/core/security/server_auth_filter.c
@@ -120,6 +120,8 @@ static void destroy_channel_elem(grpc_channel_element *elem) {
 }
 
 const grpc_channel_filter grpc_server_auth_filter = {
-    auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem,          destroy_call_elem,    sizeof(channel_data),
-    init_channel_elem,       destroy_channel_elem, "server-auth"};
+    auth_start_transport_op, grpc_channel_next_op,
+    sizeof(call_data),       init_call_elem,
+    destroy_call_elem,       sizeof(channel_data),
+    init_channel_elem,       destroy_channel_elem,
+    grpc_call_next_get_peer, "server-auth"};
diff --git a/src/core/support/host_port.c b/src/core/support/host_port.c
index 0906ebc2a3..a28f04df9c 100644
--- a/src/core/support/host_port.c
+++ b/src/core/support/host_port.c
@@ -50,7 +50,7 @@ int gpr_join_host_port(char **out, const char *host, int port) {
   }
 }
 
-void gpr_split_host_port(const char *name, char **host, char **port) {
+int gpr_split_host_port(const char *name, char **host, char **port) {
   const char *host_start;
   size_t host_len;
   const char *port_start;
@@ -63,7 +63,7 @@ void gpr_split_host_port(const char *name, char **host, char **port) {
     const char *rbracket = strchr(name, ']');
     if (rbracket == NULL) {
       /* Unmatched [ */
-      return;
+      return 0;
     }
     if (rbracket[1] == '\0') {
       /* ]<end> */
@@ -73,14 +73,14 @@ void gpr_split_host_port(const char *name, char **host, char **port) {
       port_start = rbracket + 2;
     } else {
       /* ]<invalid> */
-      return;
+      return 0;
     }
     host_start = name + 1;
     host_len = (size_t)(rbracket - host_start);
     if (memchr(host_start, ':', host_len) == NULL) {
       /* Require all bracketed hosts to contain a colon, because a hostname or
       IPv4 address should never use brackets. */
-      return;
+      return 0;
     }
   } else {
     const char *colon = strchr(name, ':');
@@ -105,4 +105,6 @@ void gpr_split_host_port(const char *name, char **host, char **port) {
   if (port_start != NULL) {
     *port = gpr_strdup(port_start);
   }
+
+  return 1;
 }
diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index e08273e451..12378f0066 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -932,7 +932,7 @@ static int prepare_application_metadata(grpc_call *call, size_t count,
     GPR_ASSERT(sizeof(grpc_linked_mdelem) == sizeof(md->internal_data));
     l->md = grpc_mdelem_from_string_and_buffer(call->metadata_context, md->key,
                                                (const gpr_uint8 *)md->value,
-                                               md->value_length);
+                                               md->value_length, 1);
     if (!grpc_mdstr_is_legal_header(l->md->key)) {
       gpr_log(GPR_ERROR, "attempt to send invalid metadata key");
       return 0;
@@ -1203,7 +1203,7 @@ grpc_call_error grpc_call_cancel_with_status(grpc_call *c,
 static grpc_call_error cancel_with_status(grpc_call *c, grpc_status_code status,
                                           const char *description) {
   grpc_mdstr *details =
-      description ? grpc_mdstr_from_string(c->metadata_context, description)
+      description ? grpc_mdstr_from_string(c->metadata_context, description, 0)
                   : NULL;
 
   GPR_ASSERT(status != GRPC_STATUS_OK);
@@ -1253,6 +1253,11 @@ static void execute_op(grpc_call *call, grpc_transport_stream_op *op) {
   elem->filter->start_transport_stream_op(elem, op);
 }
 
+char *grpc_call_get_peer(grpc_call *call) {
+  grpc_call_element *elem = CALL_ELEM_FROM_CALL(call, 0);
+  return elem->filter->get_peer(elem);
+}
+
 grpc_call *grpc_call_from_top_element(grpc_call_element *elem) {
   return CALL_FROM_TOP_ELEM(elem);
 }
@@ -1368,7 +1373,8 @@ static void recv_metadata(grpc_call *call, grpc_metadata_batch *md) {
       l->md = 0;
     }
   }
-  if (gpr_time_cmp(md->deadline, gpr_inf_future(GPR_CLOCK_REALTIME)) != 0) {
+  if (gpr_time_cmp(md->deadline, gpr_inf_future(md->deadline.clock_type)) !=
+      0) {
     set_deadline_alarm(call, md->deadline);
   }
   if (!is_trailing) {
@@ -1491,7 +1497,7 @@ grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops,
             op->data.send_status_from_server.status_details != NULL
                 ? grpc_mdstr_from_string(
                       call->metadata_context,
-                      op->data.send_status_from_server.status_details)
+                      op->data.send_status_from_server.status_details, 0)
                 : NULL;
         req = &reqs[out++];
         req->op = GRPC_IOREQ_SEND_CLOSE;
diff --git a/src/core/surface/channel.c b/src/core/surface/channel.c
index a6438ff512..583d350128 100644
--- a/src/core/surface/channel.c
+++ b/src/core/surface/channel.c
@@ -36,12 +36,14 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/support/string.h"
 #include "src/core/surface/call.h"
 #include "src/core/surface/init.h"
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
 
 /** Cache grpc-status: X mdelems for X = 0..NUM_CACHED_STATUS_ELEMS.
  *  Avoids needing to take a metadata context lock for sending status
@@ -73,6 +75,7 @@ struct grpc_channel {
   gpr_mu registered_call_mu;
   registered_call *registered_calls;
   grpc_iomgr_closure destroy_closure;
+  char *target;
 };
 
 #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c) + 1))
@@ -85,31 +88,32 @@ struct grpc_channel {
 #define DEFAULT_MAX_MESSAGE_LENGTH (100 * 1024 * 1024)
 
 grpc_channel *grpc_channel_create_from_filters(
-    const grpc_channel_filter **filters, size_t num_filters,
+    const char *target, const grpc_channel_filter **filters, size_t num_filters,
     const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) {
   size_t i;
   size_t size =
       sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
   grpc_channel *channel = gpr_malloc(size);
   memset(channel, 0, sizeof(*channel));
+  channel->target = gpr_strdup(target);
   GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
   channel->is_client = is_client;
   /* decremented by grpc_channel_destroy */
   gpr_ref_init(&channel->refs, 1);
   channel->metadata_context = mdctx;
-  channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status");
+  channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status", 0);
   channel->grpc_compression_algorithm_string =
-      grpc_mdstr_from_string(mdctx, "grpc-encoding");
-  channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message");
+      grpc_mdstr_from_string(mdctx, "grpc-encoding", 0);
+  channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message", 0);
   for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) {
     char buf[GPR_LTOA_MIN_BUFSIZE];
     gpr_ltoa(i, buf);
     channel->grpc_status_elem[i] = grpc_mdelem_from_metadata_strings(
         mdctx, GRPC_MDSTR_REF(channel->grpc_status_string),
-        grpc_mdstr_from_string(mdctx, buf));
+        grpc_mdstr_from_string(mdctx, buf, 0));
   }
-  channel->path_string = grpc_mdstr_from_string(mdctx, ":path");
-  channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority");
+  channel->path_string = grpc_mdstr_from_string(mdctx, ":path", 0);
+  channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority", 0);
   gpr_mu_init(&channel->registered_call_mu);
   channel->registered_calls = NULL;
 
@@ -137,6 +141,10 @@ grpc_channel *grpc_channel_create_from_filters(
   return channel;
 }
 
+char *grpc_channel_get_target(grpc_channel *channel) {
+  return gpr_strdup(channel->target);
+}
+
 static grpc_call *grpc_channel_create_call_internal(
     grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem,
     grpc_mdelem *authority_mdelem, gpr_timespec deadline) {
@@ -159,10 +167,10 @@ grpc_call *grpc_channel_create_call(grpc_channel *channel,
       channel, cq,
       grpc_mdelem_from_metadata_strings(
           channel->metadata_context, GRPC_MDSTR_REF(channel->path_string),
-          grpc_mdstr_from_string(channel->metadata_context, method)),
+          grpc_mdstr_from_string(channel->metadata_context, method, 0)),
       grpc_mdelem_from_metadata_strings(
           channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string),
-          grpc_mdstr_from_string(channel->metadata_context, host)),
+          grpc_mdstr_from_string(channel->metadata_context, host, 0)),
       deadline);
 }
 
@@ -171,10 +179,10 @@ void *grpc_channel_register_call(grpc_channel *channel, const char *method,
   registered_call *rc = gpr_malloc(sizeof(registered_call));
   rc->path = grpc_mdelem_from_metadata_strings(
       channel->metadata_context, GRPC_MDSTR_REF(channel->path_string),
-      grpc_mdstr_from_string(channel->metadata_context, method));
+      grpc_mdstr_from_string(channel->metadata_context, method, 0));
   rc->authority = grpc_mdelem_from_metadata_strings(
       channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string),
-      grpc_mdstr_from_string(channel->metadata_context, host));
+      grpc_mdstr_from_string(channel->metadata_context, host, 0));
   gpr_mu_lock(&channel->registered_call_mu);
   rc->next = channel->registered_calls;
   channel->registered_calls = rc;
@@ -222,6 +230,7 @@ static void destroy_channel(void *p, int ok) {
   }
   grpc_mdctx_unref(channel->metadata_context);
   gpr_mu_destroy(&channel->registered_call_mu);
+  gpr_free(channel->target);
   gpr_free(channel);
 }
 
@@ -275,7 +284,7 @@ grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel, int i) {
     gpr_ltoa(i, tmp);
     return grpc_mdelem_from_metadata_strings(
         channel->metadata_context, GRPC_MDSTR_REF(channel->grpc_status_string),
-        grpc_mdstr_from_string(channel->metadata_context, tmp));
+        grpc_mdstr_from_string(channel->metadata_context, tmp, 0));
   }
 }
 
diff --git a/src/core/surface/channel.h b/src/core/surface/channel.h
index 4e03eb4411..9e0646efaa 100644
--- a/src/core/surface/channel.h
+++ b/src/core/surface/channel.h
@@ -38,7 +38,7 @@
 #include "src/core/client_config/subchannel_factory.h"
 
 grpc_channel *grpc_channel_create_from_filters(
-    const grpc_channel_filter **filters, size_t count,
+    const char *target, const grpc_channel_filter **filters, size_t count,
     const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client);
 
 /** Get a (borrowed) pointer to this channels underlying channel stack */
diff --git a/src/core/surface/channel_create.c b/src/core/surface/channel_create.c
index 91c7b35550..1fd1855c28 100644
--- a/src/core/surface/channel_create.c
+++ b/src/core/surface/channel_create.c
@@ -151,8 +151,8 @@ static const grpc_subchannel_factory_vtable subchannel_factory_vtable = {
    Asynchronously: - resolve target
                    - connect to it (trying alternatives as presented)
                    - perform handshakes */
-grpc_channel *grpc_channel_create(const char *target,
-                                  const grpc_channel_args *args) {
+grpc_channel *grpc_insecure_channel_create(const char *target,
+                                           const grpc_channel_args *args) {
   grpc_channel *channel = NULL;
 #define MAX_FILTERS 3
   const grpc_channel_filter *filters[MAX_FILTERS];
@@ -179,7 +179,8 @@ grpc_channel *grpc_channel_create(const char *target,
     return NULL;
   }
 
-  channel = grpc_channel_create_from_filters(filters, n, args, mdctx, 1);
+  channel =
+      grpc_channel_create_from_filters(target, filters, n, args, mdctx, 1);
   grpc_client_channel_set_resolver(grpc_channel_get_channel_stack(channel),
                                    resolver);
   GRPC_RESOLVER_UNREF(resolver, "create");
diff --git a/src/core/surface/init.c b/src/core/surface/init.c
index 04e27d30ac..5cba479317 100644
--- a/src/core/surface/init.c
+++ b/src/core/surface/init.c
@@ -39,6 +39,7 @@
 #include "src/core/channel/channel_stack.h"
 #include "src/core/client_config/resolver_registry.h"
 #include "src/core/client_config/resolvers/dns_resolver.h"
+#include "src/core/client_config/resolvers/sockaddr_resolver.h"
 #include "src/core/debug/trace.h"
 #include "src/core/iomgr/iomgr.h"
 #include "src/core/profiling/timers.h"
@@ -47,10 +48,6 @@
 #include "src/core/surface/surface_trace.h"
 #include "src/core/transport/chttp2_transport.h"
 
-#ifdef GPR_POSIX_SOCKET
-#include "src/core/client_config/resolvers/unix_resolver_posix.h"
-#endif
-
 static gpr_once g_basic_init = GPR_ONCE_INIT;
 static gpr_mu g_init_mu;
 static int g_initializations;
@@ -68,6 +65,8 @@ void grpc_init(void) {
     gpr_time_init();
     grpc_resolver_registry_init("dns:///");
     grpc_register_resolver_type("dns", grpc_dns_resolver_factory_create());
+    grpc_register_resolver_type("ipv4", grpc_ipv4_resolver_factory_create());
+    grpc_register_resolver_type("ipv6", grpc_ipv6_resolver_factory_create());
 #ifdef GPR_POSIX_SOCKET
     grpc_register_resolver_type("unix", grpc_unix_resolver_factory_create());
 #endif
diff --git a/src/core/surface/lame_client.c b/src/core/surface/lame_client.c
index 3f2bb5c8a9..c4215a2cfb 100644
--- a/src/core/surface/lame_client.c
+++ b/src/core/surface/lame_client.c
@@ -47,7 +47,10 @@ typedef struct {
   grpc_linked_mdelem details;
 } call_data;
 
-typedef struct { grpc_mdctx *mdctx; } channel_data;
+typedef struct {
+  grpc_mdctx *mdctx;
+  grpc_channel *master;
+} channel_data;
 
 static void lame_start_transport_stream_op(grpc_call_element *elem,
                                            grpc_transport_stream_op *op) {
@@ -82,6 +85,11 @@ static void lame_start_transport_stream_op(grpc_call_element *elem,
   }
 }
 
+static char *lame_get_peer(grpc_call_element *elem) {
+  channel_data *chand = elem->channel_data;
+  return grpc_channel_get_target(chand->master);
+}
+
 static void lame_start_transport_op(grpc_channel_element *elem,
                                     grpc_transport_op *op) {
   if (op->on_connectivity_state_change) {
@@ -112,6 +120,7 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
   GPR_ASSERT(is_first);
   GPR_ASSERT(is_last);
   chand->mdctx = mdctx;
+  chand->master = master;
 }
 
 static void destroy_channel_elem(grpc_channel_element *elem) {}
@@ -125,11 +134,12 @@ static const grpc_channel_filter lame_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
+    lame_get_peer,
     "lame-client",
 };
 
-grpc_channel *grpc_lame_client_channel_create(void) {
+grpc_channel *grpc_lame_client_channel_create(const char *target) {
   static const grpc_channel_filter *filters[] = {&lame_filter};
-  return grpc_channel_create_from_filters(filters, 1, NULL, grpc_mdctx_create(),
-                                          1);
+  return grpc_channel_create_from_filters(target, filters, 1, NULL,
+                                          grpc_mdctx_create(), 1);
 }
diff --git a/src/core/surface/secure_channel_create.c b/src/core/surface/secure_channel_create.c
index d87ec97b53..a280311ba0 100644
--- a/src/core/surface/secure_channel_create.c
+++ b/src/core/surface/secure_channel_create.c
@@ -196,13 +196,13 @@ grpc_channel *grpc_secure_channel_create(grpc_credentials *creds,
 
   if (grpc_find_security_connector_in_args(args) != NULL) {
     gpr_log(GPR_ERROR, "Cannot set security context in channel args.");
-    return grpc_lame_client_channel_create();
+    return grpc_lame_client_channel_create(target);
   }
 
   if (grpc_credentials_create_security_connector(
           creds, target, args, NULL, &connector, &new_args_from_connector) !=
       GRPC_SECURITY_OK) {
-    return grpc_lame_client_channel_create();
+    return grpc_lame_client_channel_create(target);
   }
   mdctx = grpc_mdctx_create();
 
@@ -231,7 +231,8 @@ grpc_channel *grpc_secure_channel_create(grpc_credentials *creds,
     return NULL;
   }
 
-  channel = grpc_channel_create_from_filters(filters, n, args_copy, mdctx, 1);
+  channel =
+      grpc_channel_create_from_filters(target, filters, n, args_copy, mdctx, 1);
   grpc_client_channel_set_resolver(grpc_channel_get_channel_stack(channel),
                                    resolver);
   GRPC_RESOLVER_UNREF(resolver, "create");
diff --git a/src/core/surface/server.c b/src/core/surface/server.c
index 439452aea2..f19bcbd090 100644
--- a/src/core/surface/server.c
+++ b/src/core/surface/server.c
@@ -400,6 +400,15 @@ static void finish_start_new_rpc(grpc_server *server, grpc_call_element *elem,
   call_data *calld = elem->call_data;
   int request_id;
 
+  if (gpr_atm_acq_load(&server->shutdown_flag)) {
+    gpr_mu_lock(&calld->mu_state);
+    calld->state = ZOMBIED;
+    gpr_mu_unlock(&calld->mu_state);
+    grpc_iomgr_closure_init(&calld->kill_zombie_closure, kill_zombie, elem);
+    grpc_iomgr_add_callback(&calld->kill_zombie_closure);
+    return;
+  }
+
   request_id = gpr_stack_lockfree_pop(request_matcher->requests);
   if (request_id == -1) {
     gpr_mu_lock(&server->mu_call);
@@ -530,6 +539,7 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
 static void server_on_recv(void *ptr, int success) {
   grpc_call_element *elem = ptr;
   call_data *calld = elem->call_data;
+  gpr_timespec op_deadline;
 
   if (success && !calld->got_initial_metadata) {
     size_t i;
@@ -539,8 +549,9 @@ static void server_on_recv(void *ptr, int success) {
       grpc_stream_op *op = &ops[i];
       if (op->type != GRPC_OP_METADATA) continue;
       grpc_metadata_batch_filter(&op->data.metadata, server_filter, elem);
-      if (0 != gpr_time_cmp(op->data.metadata.deadline,
-                            gpr_inf_future(GPR_CLOCK_REALTIME))) {
+      op_deadline = op->data.metadata.deadline;
+      if (0 !=
+          gpr_time_cmp(op_deadline, gpr_inf_future(op_deadline.clock_type))) {
         calld->deadline = op->data.metadata.deadline;
       }
       calld->got_initial_metadata = 1;
@@ -677,8 +688,8 @@ static void init_channel_elem(grpc_channel_element *elem, grpc_channel *master,
   GPR_ASSERT(!is_last);
   chand->server = NULL;
   chand->channel = NULL;
-  chand->path_key = grpc_mdstr_from_string(metadata_context, ":path");
-  chand->authority_key = grpc_mdstr_from_string(metadata_context, ":authority");
+  chand->path_key = grpc_mdstr_from_string(metadata_context, ":path", 0);
+  chand->authority_key = grpc_mdstr_from_string(metadata_context, ":authority", 0);
   chand->next = chand->prev = chand;
   chand->registered_methods = NULL;
   chand->connectivity_state = GRPC_CHANNEL_IDLE;
@@ -722,6 +733,7 @@ static const grpc_channel_filter server_surface_filter = {
     sizeof(channel_data),
     init_channel_elem,
     destroy_channel_elem,
+    grpc_call_next_get_peer,
     "server",
 };
 
@@ -878,8 +890,8 @@ void grpc_server_setup_transport(grpc_server *s, grpc_transport *transport,
     grpc_transport_perform_op(transport, &op);
   }
 
-  channel =
-      grpc_channel_create_from_filters(filters, num_filters, args, mdctx, 0);
+  channel = grpc_channel_create_from_filters(NULL, filters, num_filters, args,
+                                             mdctx, 0);
   chand = (channel_data *)grpc_channel_stack_element(
               grpc_channel_get_channel_stack(channel), 0)
               ->channel_data;
@@ -899,8 +911,8 @@ void grpc_server_setup_transport(grpc_server *s, grpc_transport *transport,
     chand->registered_methods = gpr_malloc(alloc);
     memset(chand->registered_methods, 0, alloc);
     for (rm = s->registered_methods; rm; rm = rm->next) {
-      host = rm->host ? grpc_mdstr_from_string(mdctx, rm->host) : NULL;
-      method = grpc_mdstr_from_string(mdctx, rm->method);
+      host = rm->host ? grpc_mdstr_from_string(mdctx, rm->host, 0) : NULL;
+      method = grpc_mdstr_from_string(mdctx, rm->method, 0);
       hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
       for (probes = 0; chand->registered_methods[(hash + probes) % slots]
                            .server_registered_method != NULL;
diff --git a/src/core/transport/chttp2/frame_data.c b/src/core/transport/chttp2/frame_data.c
index 7a4c355f23..40bf2ebd79 100644
--- a/src/core/transport/chttp2/frame_data.c
+++ b/src/core/transport/chttp2/frame_data.c
@@ -92,7 +92,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
       p->frame_type = *cur;
       switch (p->frame_type) {
         case 0:
-          /* noop */
+          p->is_frame_compressed = 0;  /* GPR_FALSE */
           break;
         case 1:
           p->is_frame_compressed = 1;  /* GPR_TRUE */
diff --git a/src/core/transport/chttp2/internal.h b/src/core/transport/chttp2/internal.h
index e5e6f445b7..f0eeb6de50 100644
--- a/src/core/transport/chttp2/internal.h
+++ b/src/core/transport/chttp2/internal.h
@@ -60,7 +60,6 @@ typedef enum {
   GRPC_CHTTP2_LIST_WRITABLE,
   GRPC_CHTTP2_LIST_WRITING,
   GRPC_CHTTP2_LIST_WRITTEN,
-  GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE,
   GRPC_CHTTP2_LIST_PARSING_SEEN,
   GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING,
   GRPC_CHTTP2_LIST_CANCELLED_WAITING_FOR_WRITING,
@@ -286,6 +285,7 @@ struct grpc_chttp2_transport {
   grpc_endpoint *ep;
   grpc_mdctx *metadata_context;
   gpr_refcount refs;
+  char *peer_string;
 
   gpr_mu mu;
 
@@ -382,6 +382,8 @@ typedef struct {
   gpr_uint8 published_cancelled;
   /** is this stream in the stream map? (boolean) */
   gpr_uint8 in_stream_map;
+  /** is this stream actively being written? */
+  gpr_uint8 writing_now;
 
   /** stream state already published to the upper layer */
   grpc_stream_state published_state;
@@ -474,11 +476,17 @@ void grpc_chttp2_publish_reads(grpc_chttp2_transport_global *global,
 void grpc_chttp2_list_add_writable_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_stream_global *stream_global);
+void grpc_chttp2_list_add_first_writable_stream(
+    grpc_chttp2_transport_global *transport_global,
+    grpc_chttp2_stream_global *stream_global);
 int grpc_chttp2_list_pop_writable_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_transport_writing *transport_writing,
     grpc_chttp2_stream_global **stream_global,
     grpc_chttp2_stream_writing **stream_writing);
+void grpc_chttp2_list_remove_writable_stream(
+    grpc_chttp2_transport_global *transport_global,
+    grpc_chttp2_stream_global *stream_global);
 
 void grpc_chttp2_list_add_incoming_window_updated(
     grpc_chttp2_transport_global *transport_global,
@@ -510,18 +518,6 @@ int grpc_chttp2_list_pop_written_stream(
     grpc_chttp2_stream_global **stream_global,
     grpc_chttp2_stream_writing **stream_writing);
 
-void grpc_chttp2_list_add_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global *stream_global);
-int grpc_chttp2_list_pop_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_transport_writing *transport_writing,
-    grpc_chttp2_stream_global **stream_global,
-    grpc_chttp2_stream_writing **stream_writing);
-void grpc_chttp2_list_remove_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global *stream_global);
-
 void grpc_chttp2_list_add_parsing_seen_stream(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing);
diff --git a/src/core/transport/chttp2/parsing.c b/src/core/transport/chttp2/parsing.c
index 904b9afce7..d84960009b 100644
--- a/src/core/transport/chttp2/parsing.c
+++ b/src/core/transport/chttp2/parsing.c
@@ -182,8 +182,7 @@ void grpc_chttp2_publish_reads(
       stream_global->max_recv_bytes -= 
           stream_parsing->incoming_window_delta;
       stream_parsing->incoming_window_delta = 0;
-      grpc_chttp2_list_add_writable_window_update_stream(transport_global,
-                                                         stream_global);
+      grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
     }
 
     /* update outgoing flow control window */
@@ -607,7 +606,7 @@ static void on_header(void *tp, grpc_mdelem *md) {
     }
     grpc_chttp2_incoming_metadata_buffer_set_deadline(
         &stream_parsing->incoming_metadata,
-        gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), *cached_timeout));
+        gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), *cached_timeout));
     GRPC_MDELEM_UNREF(md);
   } else {
     grpc_chttp2_incoming_metadata_buffer_add(&stream_parsing->incoming_metadata,
diff --git a/src/core/transport/chttp2/stream_encoder.c b/src/core/transport/chttp2/stream_encoder.c
index 65b31a5afd..0f04169741 100644
--- a/src/core/transport/chttp2/stream_encoder.c
+++ b/src/core/transport/chttp2/stream_encoder.c
@@ -441,7 +441,7 @@ static void deadline_enc(grpc_chttp2_hpack_compressor *c, gpr_timespec deadline,
       gpr_time_sub(deadline, gpr_now(deadline.clock_type)), timeout_str);
   mdelem = grpc_mdelem_from_metadata_strings(
       c->mdctx, GRPC_MDSTR_REF(c->timeout_key_str),
-      grpc_mdstr_from_string(c->mdctx, timeout_str));
+      grpc_mdstr_from_string(c->mdctx, timeout_str, 0));
   mdelem = hpack_enc(c, mdelem, st);
   if (mdelem) GRPC_MDELEM_UNREF(mdelem);
 }
@@ -456,7 +456,7 @@ void grpc_chttp2_hpack_compressor_init(grpc_chttp2_hpack_compressor *c,
                                        grpc_mdctx *ctx) {
   memset(c, 0, sizeof(*c));
   c->mdctx = ctx;
-  c->timeout_key_str = grpc_mdstr_from_string(ctx, "grpc-timeout");
+  c->timeout_key_str = grpc_mdstr_from_string(ctx, "grpc-timeout", 0);
 }
 
 void grpc_chttp2_hpack_compressor_destroy(grpc_chttp2_hpack_compressor *c) {
diff --git a/src/core/transport/chttp2/stream_lists.c b/src/core/transport/chttp2/stream_lists.c
index 590f6abfbc..9e68c1e146 100644
--- a/src/core/transport/chttp2/stream_lists.c
+++ b/src/core/transport/chttp2/stream_lists.c
@@ -108,6 +108,23 @@ static void stream_list_maybe_remove(grpc_chttp2_transport *t,
   }
 }
 
+static void stream_list_add_head(grpc_chttp2_transport *t,
+                                 grpc_chttp2_stream *s,
+                                 grpc_chttp2_stream_list_id id) {
+  grpc_chttp2_stream *old_head;
+  GPR_ASSERT(!s->included[id]);
+  old_head = t->lists[id].head;
+  s->links[id].next = old_head;
+  s->links[id].prev = NULL;
+  if (old_head) {
+    old_head->links[id].prev = s;
+  } else {
+    t->lists[id].tail = s;
+  }
+  t->lists[id].head = s;
+  s->included[id] = 1;
+}
+
 static void stream_list_add_tail(grpc_chttp2_transport *t,
                                  grpc_chttp2_stream *s,
                                  grpc_chttp2_stream_list_id id) {
@@ -119,7 +136,6 @@ static void stream_list_add_tail(grpc_chttp2_transport *t,
   if (old_tail) {
     old_tail->links[id].next = s;
   } else {
-    s->links[id].prev = NULL;
     t->lists[id].head = s;
   }
   t->lists[id].tail = s;
@@ -144,6 +160,18 @@ void grpc_chttp2_list_add_writable_stream(
                   STREAM_FROM_GLOBAL(stream_global), GRPC_CHTTP2_LIST_WRITABLE);
 }
 
+void grpc_chttp2_list_add_first_writable_stream(
+    grpc_chttp2_transport_global *transport_global,
+    grpc_chttp2_stream_global *stream_global) {
+  GPR_ASSERT(stream_global->id != 0);
+  gpr_log(GPR_DEBUG, "add:%d:%d:%d:%d", stream_global->id,
+          stream_global->write_state, stream_global->in_stream_map,
+          stream_global->read_closed);
+  stream_list_add_head(TRANSPORT_FROM_GLOBAL(transport_global),
+                       STREAM_FROM_GLOBAL(stream_global),
+                       GRPC_CHTTP2_LIST_WRITABLE);
+}
+
 int grpc_chttp2_list_pop_writable_stream(
     grpc_chttp2_transport_global *transport_global,
     grpc_chttp2_transport_writing *transport_writing,
@@ -157,6 +185,14 @@ int grpc_chttp2_list_pop_writable_stream(
   return r;
 }
 
+void grpc_chttp2_list_remove_writable_stream(
+    grpc_chttp2_transport_global *transport_global,
+    grpc_chttp2_stream_global *stream_global) {
+  stream_list_maybe_remove(TRANSPORT_FROM_GLOBAL(transport_global),
+                           STREAM_FROM_GLOBAL(stream_global),
+                           GRPC_CHTTP2_LIST_WRITABLE);
+}
+
 void grpc_chttp2_list_add_writing_stream(
     grpc_chttp2_transport_writing *transport_writing,
     grpc_chttp2_stream_writing *stream_writing) {
@@ -202,36 +238,6 @@ int grpc_chttp2_list_pop_written_stream(
   return r;
 }
 
-void grpc_chttp2_list_add_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global *stream_global) {
-  GPR_ASSERT(stream_global->id != 0);
-  stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global),
-                  STREAM_FROM_GLOBAL(stream_global),
-                  GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE);
-}
-
-int grpc_chttp2_list_pop_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_transport_writing *transport_writing,
-    grpc_chttp2_stream_global **stream_global,
-    grpc_chttp2_stream_writing **stream_writing) {
-  grpc_chttp2_stream *stream;
-  int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream,
-                          GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE);
-  *stream_global = &stream->global;
-  *stream_writing = &stream->writing;
-  return r;
-}
-
-void grpc_chttp2_list_remove_writable_window_update_stream(
-    grpc_chttp2_transport_global *transport_global,
-    grpc_chttp2_stream_global *stream_global) {
-  stream_list_maybe_remove(TRANSPORT_FROM_GLOBAL(transport_global),
-                           STREAM_FROM_GLOBAL(stream_global),
-                           GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE);
-}
-
 void grpc_chttp2_list_add_parsing_seen_stream(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing) {
diff --git a/src/core/transport/chttp2/writing.c b/src/core/transport/chttp2/writing.c
index d8ec117aa5..d39b0c42f7 100644
--- a/src/core/transport/chttp2/writing.c
+++ b/src/core/transport/chttp2/writing.c
@@ -44,6 +44,7 @@ int grpc_chttp2_unlocking_check_writes(
     grpc_chttp2_transport_writing *transport_writing) {
   grpc_chttp2_stream_global *stream_global;
   grpc_chttp2_stream_writing *stream_writing;
+  grpc_chttp2_stream_global *first_reinserted_stream = NULL;
   gpr_uint32 window_delta;
 
   /* simple writes are queued to qbuf, and flushed here */
@@ -64,50 +65,54 @@ int grpc_chttp2_unlocking_check_writes(
   }
 
   /* for each grpc_chttp2_stream that's become writable, frame it's data
-     (according to
-     available window sizes) and add to the output buffer */
-  while (grpc_chttp2_list_pop_writable_stream(transport_global,
-                                              transport_writing, &stream_global,
-                                              &stream_writing)) {
+     (according to available window sizes) and add to the output buffer */
+  while (grpc_chttp2_list_pop_writable_stream(
+      transport_global, transport_writing, &stream_global, &stream_writing)) {
+    if (stream_global == first_reinserted_stream) {
+      /* prevent infinite loop */
+      grpc_chttp2_list_add_first_writable_stream(transport_global,
+                                                 stream_global);
+      break;
+    }
+
     stream_writing->id = stream_global->id;
-    window_delta = grpc_chttp2_preencode(
-        stream_global->outgoing_sopb->ops, &stream_global->outgoing_sopb->nops,
-        GPR_MIN(transport_global->outgoing_window,
-                stream_global->outgoing_window),
-        &stream_writing->sopb);
-    GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT(
-        "write", transport_global, outgoing_window, -(gpr_int64)window_delta);
-    GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global,
-                                     outgoing_window, -(gpr_int64)window_delta);
-    transport_global->outgoing_window -= window_delta;
-    stream_global->outgoing_window -= window_delta;
-
-    if (stream_global->write_state == GRPC_WRITE_STATE_QUEUED_CLOSE &&
-        stream_global->outgoing_sopb->nops == 0) {
-      if (!transport_global->is_client && !stream_global->read_closed) {
-        stream_writing->send_closed = GRPC_SEND_CLOSED_WITH_RST_STREAM;
-      } else {
-        stream_writing->send_closed = GRPC_SEND_CLOSED;
+    stream_writing->send_closed = GRPC_DONT_SEND_CLOSED;
+    GPR_ASSERT(!stream_global->writing_now);
+
+    if (stream_global->outgoing_sopb) {
+      window_delta =
+          grpc_chttp2_preencode(stream_global->outgoing_sopb->ops,
+                                &stream_global->outgoing_sopb->nops,
+                                GPR_MIN(transport_global->outgoing_window,
+                                        stream_global->outgoing_window),
+                                &stream_writing->sopb);
+      GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT(
+          "write", transport_global, outgoing_window, -(gpr_int64)window_delta);
+      GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global,
+                                       outgoing_window,
+                                       -(gpr_int64)window_delta);
+      transport_global->outgoing_window -= window_delta;
+      stream_global->outgoing_window -= window_delta;
+
+      if (stream_global->write_state == GRPC_WRITE_STATE_QUEUED_CLOSE &&
+          stream_global->outgoing_sopb->nops == 0) {
+        if (!transport_global->is_client && !stream_global->read_closed) {
+          stream_writing->send_closed = GRPC_SEND_CLOSED_WITH_RST_STREAM;
+        } else {
+          stream_writing->send_closed = GRPC_SEND_CLOSED;
+        }
       }
-    }
-    if (stream_writing->sopb.nops > 0 ||
-        stream_writing->send_closed != GRPC_DONT_SEND_CLOSED) {
-      grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing);
-    }
 
-    if (stream_global->outgoing_window > 0 &&
-        stream_global->outgoing_sopb->nops != 0) {
-      grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
+      if (stream_global->outgoing_window > 0 &&
+          stream_global->outgoing_sopb->nops != 0) {
+        grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
+        if (first_reinserted_stream == NULL &&
+            transport_global->outgoing_window == 0) {
+          first_reinserted_stream = stream_global;
+        }
+      }
     }
-  }
 
-  /* for each grpc_chttp2_stream that wants to update its window, add that
-   * window here */
-  while (grpc_chttp2_list_pop_writable_window_update_stream(transport_global,
-                                                            transport_writing,
-                                                            &stream_global,
-                                                            &stream_writing)) {
-    stream_writing->id = stream_global->id;
     if (!stream_global->read_closed && stream_global->unannounced_incoming_window > 0) {
       stream_writing->announce_window = stream_global->unannounced_incoming_window;
       GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global,
@@ -118,6 +123,11 @@ int grpc_chttp2_unlocking_check_writes(
       stream_global->unannounced_incoming_window = 0;
       grpc_chttp2_list_add_incoming_window_updated(transport_global,
                                                    stream_global);
+      stream_global->writing_now = 1;
+      grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing);
+    } else if (stream_writing->sopb.nops > 0 ||
+               stream_writing->send_closed != GRPC_DONT_SEND_CLOSED) {
+      stream_global->writing_now = 1;
       grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing);
     }
   }
@@ -205,6 +215,8 @@ void grpc_chttp2_cleanup_writing(
 
   while (grpc_chttp2_list_pop_written_stream(
       transport_global, transport_writing, &stream_global, &stream_writing)) {
+    GPR_ASSERT(stream_global->writing_now);
+    stream_global->writing_now = 0;
     if (stream_global->outgoing_sopb != NULL &&
         stream_global->outgoing_sopb->nops == 0) {
       stream_global->outgoing_sopb = NULL;
@@ -216,9 +228,9 @@ void grpc_chttp2_cleanup_writing(
       if (!transport_global->is_client) {
         stream_global->read_closed = 1;
       }
-      grpc_chttp2_list_add_read_write_state_changed(transport_global,
-                                                    stream_global);
     }
+    grpc_chttp2_list_add_read_write_state_changed(transport_global,
+                                                  stream_global);
   }
   transport_writing->outbuf.count = 0;
   transport_writing->outbuf.length = 0;
diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c
index c923d5e42f..9f665a139d 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/transport/chttp2_transport.c
@@ -168,6 +168,7 @@ static void destruct_transport(grpc_chttp2_transport *t) {
 
   grpc_mdctx_unref(t->metadata_context);
 
+  gpr_free(t->peer_string);
   gpr_free(t);
 }
 
@@ -217,6 +218,7 @@ static void init_transport(grpc_chttp2_transport *t,
   gpr_ref_init(&t->refs, 2);
   gpr_mu_init(&t->mu);
   grpc_mdctx_ref(mdctx);
+  t->peer_string = grpc_endpoint_get_peer(ep);
   t->metadata_context = mdctx;
   t->endpoint_reading = 1;
   t->global.next_stream_id = is_client ? 1 : 2;
@@ -228,7 +230,7 @@ static void init_transport(grpc_chttp2_transport *t,
   t->global.pings.next = t->global.pings.prev = &t->global.pings;
   t->parsing.is_client = is_client;
   t->parsing.str_grpc_timeout =
-      grpc_mdstr_from_string(t->metadata_context, "grpc-timeout");
+      grpc_mdstr_from_string(t->metadata_context, "grpc-timeout", 0);
   t->parsing.deframe_state =
       is_client ? GRPC_DTS_FH_0 : GRPC_DTS_CLIENT_PREFIX_0;
   t->writing.is_client = is_client;
@@ -393,12 +395,16 @@ static void destroy_stream(grpc_transport *gt, grpc_stream *gs) {
   }
 
   grpc_chttp2_list_remove_incoming_window_updated(&t->global, &s->global);
-  grpc_chttp2_list_remove_writable_window_update_stream(&t->global, &s->global);
+  grpc_chttp2_list_remove_writable_stream(&t->global, &s->global);
 
   gpr_mu_unlock(&t->mu);
 
   for (i = 0; i < STREAM_LIST_COUNT; i++) {
-    GPR_ASSERT(!s->included[i]);
+    if (s->included[i]) {
+      gpr_log(GPR_ERROR, "%s stream %d still included in list %d",
+              t->global.is_client ? "client" : "server", s->global.id, i);
+      abort();
+    }
   }
 
   GPR_ASSERT(s->global.outgoing_sopb == NULL);
@@ -574,8 +580,6 @@ static void maybe_start_some_streams(
     grpc_chttp2_list_add_incoming_window_updated(transport_global,
                                                  stream_global);
     grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
-    grpc_chttp2_list_add_writable_window_update_stream(transport_global,
-                                                       stream_global);
 
   }
   /* cancel out streams that will never be started */
@@ -641,8 +645,7 @@ static void perform_stream_op_locked(
     if (stream_global->id != 0) {
       grpc_chttp2_list_add_read_write_state_changed(transport_global,
                                                     stream_global);
-      grpc_chttp2_list_add_writable_window_update_stream(transport_global,
-                                                         stream_global);
+      grpc_chttp2_list_add_writable_stream(transport_global, stream_global);
     }
   }
 
@@ -750,6 +753,7 @@ static void remove_stream(grpc_chttp2_transport *t, gpr_uint32 id) {
   if (!s) {
     s = grpc_chttp2_stream_map_delete(&t->new_stream_map, id);
   }
+  grpc_chttp2_list_remove_writable_stream(&t->global, &s->global);
   GPR_ASSERT(s);
   s->global.in_stream_map = 0;
   if (t->parsing.incoming_stream == &s->parsing) {
@@ -831,6 +835,9 @@ static void unlock_check_read_write_state(grpc_chttp2_transport *t) {
     if (!stream_global->publish_sopb) {
       continue;
     }
+    if (stream_global->writing_now) {
+      continue;
+    }
     /* FIXME(ctiller): we include in_stream_map in our computation of
        whether the stream is write-closed. This is completely bogus,
        but has the effect of delaying stream-closed until the stream
@@ -1069,9 +1076,17 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *reason,
  * INTEGRATION GLUE
  */
 
-static const grpc_transport_vtable vtable = {
-    sizeof(grpc_chttp2_stream), init_stream,    perform_stream_op,
-    perform_transport_op,       destroy_stream, destroy_transport};
+static char *chttp2_get_peer(grpc_transport *t) {
+  return gpr_strdup(((grpc_chttp2_transport *)t)->peer_string);
+}
+
+static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
+                                             init_stream,
+                                             perform_stream_op,
+                                             perform_transport_op,
+                                             destroy_stream,
+                                             destroy_transport,
+                                             chttp2_get_peer};
 
 grpc_transport *grpc_create_chttp2_transport(
     const grpc_channel_args *channel_args, grpc_endpoint *ep, grpc_mdctx *mdctx,
diff --git a/src/core/transport/metadata.c b/src/core/transport/metadata.c
index e95b7a21f9..967fd4898c 100644
--- a/src/core/transport/metadata.c
+++ b/src/core/transport/metadata.c
@@ -309,7 +309,37 @@ static void slice_unref(void *p) {
   unlock(ctx);
 }
 
-grpc_mdstr *grpc_mdstr_from_string(grpc_mdctx *ctx, const char *str) {
+grpc_mdstr *grpc_mdstr_from_string(grpc_mdctx *ctx, const char *str, int canonicalize_key) {
+  if (canonicalize_key) {
+    size_t len;
+    size_t i;
+    int canonical = 1;
+
+    for (i = 0; str[i]; i++) {
+      if (str[i] >= 'A' && str[i] <= 'Z') {
+        canonical = 0;
+        /* Keep going in loop just to get string length */
+      }
+    }
+    len = i;
+
+    if (canonical) {
+      return grpc_mdstr_from_buffer(ctx, (const gpr_uint8 *)str, len);
+    } else {
+      char *copy = gpr_malloc(len);
+      grpc_mdstr *ret;
+      for (i = 0; i < len; i++) {
+        if (str[i] >= 'A' && str[i] <= 'Z') {
+          copy[i] = str[i] - 'A' + 'a';
+        } else {
+          copy[i] = str[i];
+        }
+      }
+      ret = grpc_mdstr_from_buffer(ctx, (const gpr_uint8 *)copy, len);
+      gpr_free(copy);
+      return ret;
+    }
+  }
   return grpc_mdstr_from_buffer(ctx, (const gpr_uint8 *)str, strlen(str));
 }
 
@@ -491,8 +521,8 @@ grpc_mdelem *grpc_mdelem_from_metadata_strings(grpc_mdctx *ctx,
 grpc_mdelem *grpc_mdelem_from_strings(grpc_mdctx *ctx, const char *key,
                                       const char *value) {
   return grpc_mdelem_from_metadata_strings(ctx,
-                                           grpc_mdstr_from_string(ctx, key),
-                                           grpc_mdstr_from_string(ctx, value));
+                                           grpc_mdstr_from_string(ctx, key, 0),
+                                           grpc_mdstr_from_string(ctx, value, 0));
 }
 
 grpc_mdelem *grpc_mdelem_from_slices(grpc_mdctx *ctx, gpr_slice key,
@@ -504,9 +534,10 @@ grpc_mdelem *grpc_mdelem_from_slices(grpc_mdctx *ctx, gpr_slice key,
 grpc_mdelem *grpc_mdelem_from_string_and_buffer(grpc_mdctx *ctx,
                                                 const char *key,
                                                 const gpr_uint8 *value,
-                                                size_t value_length) {
+                                                size_t value_length,
+                                                int canonicalize_key) {
   return grpc_mdelem_from_metadata_strings(
-      ctx, grpc_mdstr_from_string(ctx, key),
+      ctx, grpc_mdstr_from_string(ctx, key, canonicalize_key),
       grpc_mdstr_from_buffer(ctx, value, value_length));
 }
 
diff --git a/src/core/transport/metadata.h b/src/core/transport/metadata.h
index 99b15322c3..15ef9bb555 100644
--- a/src/core/transport/metadata.h
+++ b/src/core/transport/metadata.h
@@ -95,7 +95,7 @@ size_t grpc_mdctx_get_mdtab_free_test_only(grpc_mdctx *mdctx);
 
 /* Constructors for grpc_mdstr instances; take a variety of data types that
    clients may have handy */
-grpc_mdstr *grpc_mdstr_from_string(grpc_mdctx *ctx, const char *str);
+grpc_mdstr *grpc_mdstr_from_string(grpc_mdctx *ctx, const char *str, int perform_key_canonicalization);
 /* Unrefs the slice. */
 grpc_mdstr *grpc_mdstr_from_slice(grpc_mdctx *ctx, gpr_slice slice);
 grpc_mdstr *grpc_mdstr_from_buffer(grpc_mdctx *ctx, const gpr_uint8 *str,
@@ -117,7 +117,8 @@ grpc_mdelem *grpc_mdelem_from_slices(grpc_mdctx *ctx, gpr_slice key,
 grpc_mdelem *grpc_mdelem_from_string_and_buffer(grpc_mdctx *ctx,
                                                 const char *key,
                                                 const gpr_uint8 *value,
-                                                size_t value_length);
+                                                size_t value_length,
+                                                int canonicalize_key);
 
 /* Mutator and accessor for grpc_mdelem user data. The destructor function
    is used as a type tag and is checked during user_data fetch. */
diff --git a/src/core/transport/transport.c b/src/core/transport/transport.c
index 2689e3028a..69c00b6a4f 100644
--- a/src/core/transport/transport.c
+++ b/src/core/transport/transport.c
@@ -65,6 +65,10 @@ void grpc_transport_destroy_stream(grpc_transport *transport,
   transport->vtable->destroy_stream(transport, stream);
 }
 
+char *grpc_transport_get_peer(grpc_transport *transport) {
+  return transport->vtable->get_peer(transport);
+}
+
 void grpc_transport_stream_op_finish_with_failure(
     grpc_transport_stream_op *op) {
   if (op->send_ops) {
diff --git a/src/core/transport/transport.h b/src/core/transport/transport.h
index 64503604ee..553779602a 100644
--- a/src/core/transport/transport.h
+++ b/src/core/transport/transport.h
@@ -182,4 +182,7 @@ void grpc_transport_close(grpc_transport *transport);
 /* Destroy the transport */
 void grpc_transport_destroy(grpc_transport *transport);
 
+/* Get the transports peer */
+char *grpc_transport_get_peer(grpc_transport *transport);
+
 #endif /* GRPC_INTERNAL_CORE_TRANSPORT_TRANSPORT_H */
diff --git a/src/core/transport/transport_impl.h b/src/core/transport/transport_impl.h
index 515721dfb6..d3bbdf6c27 100644
--- a/src/core/transport/transport_impl.h
+++ b/src/core/transport/transport_impl.h
@@ -58,6 +58,9 @@ typedef struct grpc_transport_vtable {
 
   /* implementation of grpc_transport_destroy */
   void (*destroy)(grpc_transport *self);
+
+  /* implementation of grpc_transport_get_peer */
+  char *(*get_peer)(grpc_transport *self);
 } grpc_transport_vtable;
 
 /* an instance of a grpc transport */
diff --git a/src/core/transport/transport_op_string.c b/src/core/transport/transport_op_string.c
index 10d796fc15..f62c340e97 100644
--- a/src/core/transport/transport_op_string.c
+++ b/src/core/transport/transport_op_string.c
@@ -116,10 +116,9 @@ char *grpc_transport_stream_op_string(grpc_transport_stream_op *op) {
   if (op->send_ops) {
     if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
     first = 0;
-    gpr_strvec_add(&b, gpr_strdup("SEND"));
-    if (op->is_last_send) {
-      gpr_strvec_add(&b, gpr_strdup("_LAST"));
-    }
+    gpr_asprintf(&tmp, "SEND%s:%p", op->is_last_send ? "_LAST" : "",
+                 op->on_done_send);
+    gpr_strvec_add(&b, tmp);
     gpr_strvec_add(&b, gpr_strdup("["));
     gpr_strvec_add(&b, grpc_sopb_string(op->send_ops));
     gpr_strvec_add(&b, gpr_strdup("]"));
@@ -128,7 +127,8 @@ char *grpc_transport_stream_op_string(grpc_transport_stream_op *op) {
   if (op->recv_ops) {
     if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
     first = 0;
-    gpr_asprintf(&tmp, "RECV:max_recv_bytes=%d", op->max_recv_bytes);
+    gpr_asprintf(&tmp, "RECV:%p:max_recv_bytes=%d", op->on_done_recv,
+                 op->max_recv_bytes);
     gpr_strvec_add(&b, tmp);
   }
 
diff --git a/src/cpp/client/create_channel.cc b/src/cpp/client/create_channel.cc
index 38eeda0dc0..62f179d361 100644
--- a/src/cpp/client/create_channel.cc
+++ b/src/cpp/client/create_channel.cc
@@ -52,6 +52,6 @@ std::shared_ptr<ChannelInterface> CreateChannel(
                     user_agent_prefix.str());
   return creds ? creds->CreateChannel(target, cp_args)
                : std::shared_ptr<ChannelInterface>(
-                     new Channel(target, grpc_lame_client_channel_create()));
+                     new Channel(target, grpc_lame_client_channel_create(NULL)));
 }
 }  // namespace grpc
diff --git a/src/cpp/client/insecure_credentials.cc b/src/cpp/client/insecure_credentials.cc
index 5ad8784567..e802fa8034 100644
--- a/src/cpp/client/insecure_credentials.cc
+++ b/src/cpp/client/insecure_credentials.cc
@@ -49,7 +49,7 @@ class InsecureCredentialsImpl GRPC_FINAL : public Credentials {
     grpc_channel_args channel_args;
     args.SetChannelArgs(&channel_args);
     return std::shared_ptr<ChannelInterface>(new Channel(
-        target, grpc_channel_create(target.c_str(), &channel_args)));
+        target, grpc_insecure_channel_create(target.c_str(), &channel_args)));
   }
 
   // InsecureCredentials should not be applied to a call.
diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index 01c7f14f1a..abf0cb387e 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -99,8 +99,8 @@ std::shared_ptr<Credentials> ServiceAccountCredentials(
 }
 
 // Builds JWT credentials.
-std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
-                                            long token_lifetime_seconds) {
+std::shared_ptr<Credentials> ServiceAccountJWTAccessCredentials(
+    const grpc::string& json_key, long token_lifetime_seconds) {
   if (token_lifetime_seconds <= 0) {
     gpr_log(GPR_ERROR,
             "Trying to create JWTCredentials with non-positive lifetime");
@@ -108,8 +108,8 @@ std::shared_ptr<Credentials> JWTCredentials(const grpc::string& json_key,
   }
   gpr_timespec lifetime =
       gpr_time_from_seconds(token_lifetime_seconds, GPR_TIMESPAN);
-  return WrapCredentials(
-      grpc_jwt_credentials_create(json_key.c_str(), lifetime));
+  return WrapCredentials(grpc_service_account_jwt_access_credentials_create(
+      json_key.c_str(), lifetime));
 }
 
 // Builds refresh token credentials.
diff --git a/src/cpp/server/create_default_thread_pool.cc b/src/cpp/server/create_default_thread_pool.cc
index cc182f59f4..81c84474d8 100644
--- a/src/cpp/server/create_default_thread_pool.cc
+++ b/src/cpp/server/create_default_thread_pool.cc
@@ -32,7 +32,7 @@
  */
 
 #include <grpc/support/cpu.h>
-#include <grpc++/fixed_size_thread_pool.h>
+#include <grpc++/dynamic_thread_pool.h>
 
 #ifndef GRPC_CUSTOM_DEFAULT_THREAD_POOL
 
@@ -41,7 +41,7 @@ namespace grpc {
 ThreadPoolInterface* CreateDefaultThreadPool() {
    int cores = gpr_cpu_num_cores();
    if (!cores) cores = 4;
-   return new FixedSizeThreadPool(cores);
+   return new DynamicThreadPool(cores);
 }
 
 }  // namespace grpc
diff --git a/src/cpp/server/dynamic_thread_pool.cc b/src/cpp/server/dynamic_thread_pool.cc
new file mode 100644
index 0000000000..f58d0420df
--- /dev/null
+++ b/src/cpp/server/dynamic_thread_pool.cc
@@ -0,0 +1,131 @@
+/*
+ *
+ * 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 <grpc++/impl/sync.h>
+#include <grpc++/impl/thd.h>
+#include <grpc++/dynamic_thread_pool.h>
+
+namespace grpc {
+DynamicThreadPool::DynamicThread::DynamicThread(DynamicThreadPool *pool):
+  pool_(pool),
+  thd_(new grpc::thread(&DynamicThreadPool::DynamicThread::ThreadFunc, this)) {
+}
+DynamicThreadPool::DynamicThread::~DynamicThread() {
+  thd_->join();
+  thd_.reset();
+}
+
+void DynamicThreadPool::DynamicThread::ThreadFunc() {
+  pool_->ThreadFunc();
+  // Now that we have killed ourselves, we should reduce the thread count
+  grpc::unique_lock<grpc::mutex> lock(pool_->mu_);
+  pool_->nthreads_--;
+  // Move ourselves to dead list
+  pool_->dead_threads_.push_back(this);
+
+  if ((pool_->shutdown_) && (pool_->nthreads_ == 0)) {
+    pool_->shutdown_cv_.notify_one();
+  }
+}
+  
+void DynamicThreadPool::ThreadFunc() {
+  for (;;) {
+    // Wait until work is available or we are shutting down.
+    grpc::unique_lock<grpc::mutex> lock(mu_);
+    if (!shutdown_ && callbacks_.empty()) {
+      // If there are too many threads waiting, then quit this thread
+      if (threads_waiting_ >= reserve_threads_) {
+	break;
+      }
+      threads_waiting_++;
+      cv_.wait(lock);
+      threads_waiting_--;
+    }
+    // Drain callbacks before considering shutdown to ensure all work
+    // gets completed.
+    if (!callbacks_.empty()) {
+      auto cb = callbacks_.front();
+      callbacks_.pop();
+      lock.unlock();
+      cb();
+    } else if (shutdown_) {
+      break;
+    }
+  }
+}
+
+DynamicThreadPool::DynamicThreadPool(int reserve_threads) :
+  shutdown_(false), reserve_threads_(reserve_threads), nthreads_(0),
+  threads_waiting_(0) {
+  for (int i = 0; i < reserve_threads_; i++) {
+    grpc::lock_guard<grpc::mutex> lock(mu_);
+    nthreads_++;
+    new DynamicThread(this);
+  }
+}
+
+void DynamicThreadPool::ReapThreads(std::list<DynamicThread*>* tlist) {
+  for (auto t = tlist->begin(); t != tlist->end(); t = tlist->erase(t)) {
+    delete *t;    
+  }
+}
+  
+DynamicThreadPool::~DynamicThreadPool() {
+  grpc::unique_lock<grpc::mutex> lock(mu_);
+  shutdown_ = true;
+  cv_.notify_all();
+  while (nthreads_ != 0) {
+    shutdown_cv_.wait(lock);
+  }
+  ReapThreads(&dead_threads_);
+}
+
+void DynamicThreadPool::Add(const std::function<void()>& callback) {
+  grpc::lock_guard<grpc::mutex> lock(mu_);
+  // Add works to the callbacks list
+  callbacks_.push(callback);
+  // Increase pool size or notify as needed
+  if (threads_waiting_ == 0) {
+    // Kick off a new thread
+    nthreads_++;
+    new DynamicThread(this);
+  } else {
+    cv_.notify_one();
+  }
+  // Also use this chance to harvest dead threads
+  if (!dead_threads_.empty()) {
+    ReapThreads(&dead_threads_);
+  }
+}
+
+}  // namespace grpc
diff --git a/src/cpp/util/time.cc b/src/cpp/util/time.cc
index a814cad452..799c597e0b 100644
--- a/src/cpp/util/time.cc
+++ b/src/cpp/util/time.cc
@@ -79,9 +79,10 @@ void TimepointHR2Timespec(const high_resolution_clock::time_point& from,
 }
 
 system_clock::time_point Timespec2Timepoint(gpr_timespec t) {
-  if (gpr_time_cmp(t, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
+  if (gpr_time_cmp(t, gpr_inf_future(t.clock_type)) == 0) {
     return system_clock::time_point::max();
   }
+  t = gpr_convert_clock_type(t, GPR_CLOCK_REALTIME);
   system_clock::time_point tp;
   tp += duration_cast<system_clock::time_point::duration>(seconds(t.tv_sec));
   tp +=
diff --git a/src/csharp/Grpc.Auth/GoogleCredential.cs b/src/csharp/Grpc.Auth/GoogleCredential.cs
index 7edf19ed67..9936cf583c 100644
--- a/src/csharp/Grpc.Auth/GoogleCredential.cs
+++ b/src/csharp/Grpc.Auth/GoogleCredential.cs
@@ -89,17 +89,15 @@ namespace Grpc.Auth
                 return new GoogleCredential(new ComputeCredential(new ComputeCredential.Initializer()));
             }
 
-            JObject o1 = JObject.Parse(File.ReadAllText(credsPath));
-            string clientEmail = o1.GetValue(ClientEmailFieldName).Value<string>();
-            string privateKeyString = o1.GetValue(PrivateKeyFieldName).Value<string>();
-            var privateKey = ParsePrivateKeyFromString(privateKeyString);
+            JObject jsonCredentialParameters = JObject.Parse(File.ReadAllText(credsPath));
+            string clientEmail = jsonCredentialParameters.GetValue(ClientEmailFieldName).Value<string>();
+            string privateKeyString = jsonCredentialParameters.GetValue(PrivateKeyFieldName).Value<string>();
 
             var serviceCredential = new ServiceAccountCredential(
                 new ServiceAccountCredential.Initializer(clientEmail)
                 {
                     Scopes = scopes,
-                    Key = privateKey
-                });
+                }.FromPrivateKey(privateKeyString));
             return new GoogleCredential(serviceCredential);
         }
 
@@ -123,16 +121,5 @@ namespace Grpc.Auth
                 return credential;
             }
         }
-
-        private RSACryptoServiceProvider ParsePrivateKeyFromString(string base64PrivateKey)
-        {
-            // TODO(jtattermusch): temporary code to create RSACryptoServiceProvider.
-            base64PrivateKey = base64PrivateKey.Replace("-----BEGIN PRIVATE KEY-----", "").Replace("\n", "").Replace("-----END PRIVATE KEY-----", "");
-            RsaPrivateCrtKeyParameters key = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(base64PrivateKey));
-            RSAParameters rsaParameters = DotNetUtilities.ToRSAParameters(key);
-            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
-            rsa.ImportParameters(rsaParameters);
-            return rsa;
-        }
     }
 }
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.csproj b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
index fdec2e7bd7..5615ffd620 100644
--- a/src/csharp/Grpc.Auth/Grpc.Auth.csproj
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.csproj
@@ -11,6 +11,7 @@
     <AssemblyName>Grpc.Auth</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <DocumentationFile>bin\$(Configuration)\Grpc.Auth.Xml</DocumentationFile>
+    <NuGetPackageImportStamp>9b408026</NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -34,14 +35,17 @@
     <Reference Include="BouncyCastle.Crypto">
       <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Auth">
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.dll</HintPath>
+    <Reference Include="Google.Apis.Auth, Version=1.9.2.27817, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Auth.PlatformServices">
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.2.27820, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Core">
-      <HintPath>..\packages\Google.Apis.Core.1.9.1\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    <Reference Include="Google.Apis.Core, Version=1.9.2.27816, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Google.Apis.Core.1.9.2\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.Threading.Tasks">
       <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
@@ -52,18 +56,20 @@
     <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop">
       <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.6.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.Extensions">
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+    <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
     </Reference>
-    <Reference Include="System.Net.Http.Primitives">
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+    <Reference Include="System.Net.Http.Primitives, Version=4.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
   </ItemGroup>
@@ -73,7 +79,7 @@
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="GoogleCredential.cs" />
-    <Compile Include="OAuth2InterceptorFactory.cs" />
+    <Compile Include="OAuth2Interceptors.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
@@ -87,9 +93,11 @@
     <None Include="Grpc.Auth.nuspec" />
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
-    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
-    <Error Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Auth/Grpc.Auth.nuspec b/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
index 1262bdbdab..eeaa49aa92 100644
--- a/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
+++ b/src/csharp/Grpc.Auth/Grpc.Auth.nuspec
@@ -15,8 +15,7 @@
     <copyright>Copyright 2015, Google Inc.</copyright>
     <tags>gRPC RPC Protocol HTTP/2 Auth OAuth2</tags>
 	<dependencies>
-	  <dependency id="BouncyCastle" version="1.7.0" />
-	  <dependency id="Google.Apis.Auth" version="1.9.1" />
+	  <dependency id="Google.Apis.Auth" version="1.9.2" />
 	  <dependency id="Grpc.Core" version="$version$" />
     </dependencies>
   </metadata>
diff --git a/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs b/src/csharp/Grpc.Auth/OAuth2Interceptors.cs
index 420c4cb537..c785ca5a16 100644
--- a/src/csharp/Grpc.Auth/OAuth2InterceptorFactory.cs
+++ b/src/csharp/Grpc.Auth/OAuth2Interceptors.cs
@@ -47,18 +47,32 @@ using Grpc.Core.Utils;
 
 namespace Grpc.Auth
 {
-    public static class OAuth2InterceptorFactory
+    public static class OAuth2Interceptors
     {
         /// <summary>
-        /// Creates OAuth2 interceptor.
+        /// Creates OAuth2 interceptor that will obtain access token from GoogleCredentials.
         /// </summary>
-        public static MetadataInterceptorDelegate Create(GoogleCredential googleCredential)
+        public static MetadataInterceptorDelegate FromCredential(GoogleCredential googleCredential)
         {
             var interceptor = new OAuth2Interceptor(googleCredential.InternalCredential, SystemClock.Default);
             return new MetadataInterceptorDelegate(interceptor.InterceptHeaders);
         }
 
         /// <summary>
+        /// Creates OAuth2 interceptor that will use given OAuth2 token.
+        /// </summary>
+        /// <param name="oauth2Token"></param>
+        /// <returns></returns>
+        public static MetadataInterceptorDelegate FromAccessToken(string oauth2Token)
+        {
+            Preconditions.CheckNotNull(oauth2Token);
+            return new MetadataInterceptorDelegate((metadata) =>
+            {
+                metadata.Add(OAuth2Interceptor.CreateBearerTokenHeader(oauth2Token));
+            });
+        }
+
+        /// <summary>
         /// Injects OAuth2 authorization header into initial metadata (= request headers).
         /// </summary>
         private class OAuth2Interceptor
@@ -97,8 +111,15 @@ namespace Grpc.Auth
             public void InterceptHeaders(Metadata metadata)
             {
                 var accessToken = GetAccessToken(CancellationToken.None);
-                metadata.Add(new Metadata.Entry(AuthorizationHeader, Schema + " " + accessToken));
+                metadata.Add(CreateBearerTokenHeader(accessToken));
+            }
+
+            public static Metadata.Entry CreateBearerTokenHeader(string accessToken)
+            {
+                return new Metadata.Entry(AuthorizationHeader, Schema + " " + accessToken);
             }
         }
+
+
     }
 }
diff --git a/src/csharp/Grpc.Auth/app.config b/src/csharp/Grpc.Auth/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.Auth/app.config
+++ b/src/csharp/Grpc.Auth/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.Auth/packages.config b/src/csharp/Grpc.Auth/packages.config
index 7d348872ba..29be953bf3 100644
--- a/src/csharp/Grpc.Auth/packages.config
+++ b/src/csharp/Grpc.Auth/packages.config
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
-  <package id="Google.Apis.Auth" version="1.9.1" targetFramework="net45" />
-  <package id="Google.Apis.Core" version="1.9.1" targetFramework="net45" />
-  <package id="Microsoft.Bcl" version="1.1.9" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.2" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.2" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
-  <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
index e797dd82f2..e286ea519f 100644
--- a/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
+++ b/src/csharp/Grpc.Core.Tests/ClientServerTest.cs
@@ -33,6 +33,7 @@
 
 using System;
 using System.Diagnostics;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Grpc.Core;
@@ -44,7 +45,7 @@ namespace Grpc.Core.Tests
 {
     public class ClientServerTest
     {
-        const string Host = "localhost";
+        const string Host = "127.0.0.1";
         const string ServiceName = "/tests.Test";
 
         static readonly Method<string, string> EchoMethod = new Method<string, string>(
@@ -78,9 +79,9 @@ namespace Grpc.Core.Tests
         {
             server = new Server();
             server.AddServiceDefinition(ServiceDefinition);
-            int port = server.AddListeningPort(Host, Server.PickUnusedPort);
+            int port = server.AddPort(Host, Server.PickUnusedPort, ServerCredentials.Insecure);
             server.Start();
-            channel = new Channel(Host, port);
+            channel = new Channel(Host, port, Credentials.Insecure);
         }
 
         [TearDown]
@@ -99,17 +100,17 @@ namespace Grpc.Core.Tests
         [Test]
         public void UnaryCall()
         {
-            var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
-            Assert.AreEqual("ABC", Calls.BlockingUnaryCall(call, "ABC", CancellationToken.None));
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            Assert.AreEqual("ABC", Calls.BlockingUnaryCall(internalCall, "ABC", CancellationToken.None));
         }
 
         [Test]
         public void UnaryCall_ServerHandlerThrows()
         {
-            var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
             try
             {
-                Calls.BlockingUnaryCall(call, "THROW", CancellationToken.None);
+                Calls.BlockingUnaryCall(internalCall, "THROW", CancellationToken.None);
                 Assert.Fail();
             }
             catch (RpcException e)
@@ -119,67 +120,112 @@ namespace Grpc.Core.Tests
         }
 
         [Test]
+        public void UnaryCall_ServerHandlerThrowsRpcException()
+        {
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            try
+            {
+                Calls.BlockingUnaryCall(internalCall, "THROW_UNAUTHENTICATED", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.Unauthenticated, e.Status.StatusCode);
+            }
+        }
+
+        [Test]
+        public void UnaryCall_ServerHandlerSetsStatus()
+        {
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            try
+            {
+                Calls.BlockingUnaryCall(internalCall, "SET_UNAUTHENTICATED", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.Unauthenticated, e.Status.StatusCode); 
+            }
+        }
+
+        [Test]
         public void AsyncUnaryCall()
         {
-            var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
-            var result = Calls.AsyncUnaryCall(call, "ABC", CancellationToken.None).Result;
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            var result = Calls.AsyncUnaryCall(internalCall, "ABC", CancellationToken.None).ResponseAsync.Result;
             Assert.AreEqual("ABC", result);
         }
 
         [Test]
-        public void AsyncUnaryCall_ServerHandlerThrows()
+        public async Task AsyncUnaryCall_ServerHandlerThrows()
         {
-            Task.Run(async () =>
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            try
             {
-                var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
-                try
-                {
-                    await Calls.AsyncUnaryCall(call, "THROW", CancellationToken.None);
-                    Assert.Fail();
-                }
-                catch (RpcException e)
-                {
-                    Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode);
-                }
-            }).Wait();
+                await Calls.AsyncUnaryCall(internalCall, "THROW", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode);
+            }
         }
 
         [Test]
-        public void ClientStreamingCall()
+        public async Task ClientStreamingCall()
         {
-            Task.Run(async () => 
-            {
-                var call = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
-                var callResult = Calls.AsyncClientStreamingCall(call, CancellationToken.None);
+            var internalCall = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
+            var call = Calls.AsyncClientStreamingCall(internalCall, CancellationToken.None);
 
-                await callResult.RequestStream.WriteAll(new string[] { "A", "B", "C" });
-                Assert.AreEqual("ABC", await callResult.Result);
-            }).Wait();
+            await call.RequestStream.WriteAll(new string[] { "A", "B", "C" });
+            Assert.AreEqual("ABC", await call.ResponseAsync);
         }
 
         [Test]
-        public void ClientStreamingCall_CancelAfterBegin()
+        public async Task ClientStreamingCall_CancelAfterBegin()
         {
-            Task.Run(async () => 
+            var internalCall = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
+
+            var cts = new CancellationTokenSource();
+            var call = Calls.AsyncClientStreamingCall(internalCall, cts.Token);
+
+            // TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
+            await Task.Delay(1000);
+            cts.Cancel();
+
+            try
             {
-                var call = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
+                await call.ResponseAsync;
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
+            }
+        }
 
-                var cts = new CancellationTokenSource();
-                var callResult = Calls.AsyncClientStreamingCall(call, cts.Token);
+        [Test]
+        public void AsyncUnaryCall_EchoMetadata()
+        {
+            var headers = new Metadata
+            {
+                new Metadata.Entry("asciiHeader", "abcdefg"),
+                new Metadata.Entry("binaryHeader-bin", new byte[] { 1, 2, 3, 0, 0xff }),
+            };
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, headers);
+            var call = Calls.AsyncUnaryCall(internalCall, "ABC", CancellationToken.None);
 
-                // TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
-                await Task.Delay(1000);
-                cts.Cancel();
+            Assert.AreEqual("ABC", call.ResponseAsync.Result);
 
-                try
-                {
-                    await callResult.Result;
-                }
-                catch (RpcException e)
-                {
-                    Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode); 
-                }
-            }).Wait();
+            Assert.AreEqual(StatusCode.OK, call.GetStatus().StatusCode);
+
+            var trailers = call.GetTrailers();
+            Assert.AreEqual(2, trailers.Count);
+            Assert.AreEqual(headers[0].Key, trailers[0].Key);
+            Assert.AreEqual(headers[0].Value, trailers[0].Value);
+
+            Assert.AreEqual(headers[1].Key, trailers[1].Key);
+            CollectionAssert.AreEqual(headers[1].ValueBytes, trailers[1].ValueBytes);
         }
 
         [Test]
@@ -187,25 +233,25 @@ namespace Grpc.Core.Tests
         {
             channel.Dispose();
 
-            var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
-            Assert.Throws(typeof(ObjectDisposedException), () => Calls.BlockingUnaryCall(call, "ABC", CancellationToken.None));
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            Assert.Throws(typeof(ObjectDisposedException), () => Calls.BlockingUnaryCall(internalCall, "ABC", CancellationToken.None));
         }
 
         [Test]
         public void UnaryCallPerformance()
         {
-            var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
             BenchmarkUtil.RunBenchmark(100, 100,
-                                       () => { Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken)); });
+                                       () => { Calls.BlockingUnaryCall(internalCall, "ABC", default(CancellationToken)); });
         }
             
         [Test]
         public void UnknownMethodHandler()
         {
-            var call = new Call<string, string>(ServiceName, NonexistentMethod, channel, Metadata.Empty);
+            var internalCall = new Call<string, string>(ServiceName, NonexistentMethod, channel, Metadata.Empty);
             try
             {
-                Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken));
+                Calls.BlockingUnaryCall(internalCall, "ABC", default(CancellationToken));
                 Assert.Fail();
             }
             catch (RpcException e)
@@ -214,16 +260,61 @@ namespace Grpc.Core.Tests
             }
         }
 
-        private static async Task<string> EchoHandler(ServerCallContext context, string request)
+        [Test]
+        public void UserAgentStringPresent()
+        {
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            string userAgent = Calls.BlockingUnaryCall(internalCall, "RETURN-USER-AGENT", CancellationToken.None);
+            Assert.IsTrue(userAgent.StartsWith("grpc-csharp/"));
+        }
+
+        [Test]
+        public void PeerInfoPresent()
+        {
+            var internalCall = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
+            string peer = Calls.BlockingUnaryCall(internalCall, "RETURN-PEER", CancellationToken.None);
+            Assert.IsTrue(peer.Contains(Host));
+        }
+
+        private static async Task<string> EchoHandler(string request, ServerCallContext context)
         {
+            foreach (Metadata.Entry metadataEntry in context.RequestHeaders)
+            {
+                if (metadataEntry.Key != "user-agent")
+                {
+                    context.ResponseTrailers.Add(metadataEntry);
+                }
+            }
+
+            if (request == "RETURN-USER-AGENT")
+            {
+                return context.RequestHeaders.Where(entry => entry.Key == "user-agent").Single().Value;
+            }
+
+            if (request == "RETURN-PEER")
+            {
+                return context.Peer;
+            }
+
             if (request == "THROW")
             {
                 throw new Exception("This was thrown on purpose by a test");
             }
+
+            if (request == "THROW_UNAUTHENTICATED")
+            {
+                throw new RpcException(new Status(StatusCode.Unauthenticated, ""));
+            }
+
+            if (request == "SET_UNAUTHENTICATED")
+            {
+                context.Status = new Status(StatusCode.Unauthenticated, "");
+            }
+
             return request;
         }
 
-        private static async Task<string> ConcatAndEchoHandler(ServerCallContext context, IAsyncStreamReader<string> requestStream)
+        private static async Task<string> ConcatAndEchoHandler(IAsyncStreamReader<string> requestStream, ServerCallContext context)
         {
             string result = "";
             await requestStream.ForEach(async (request) =>
diff --git a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
index 927954c448..1c4cca8b69 100644
--- a/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
+++ b/src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj
@@ -28,9 +28,25 @@
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="nunit.core">
+      <HintPath>..\packages\NUnitTestAdapter.2.0.0\lib\nunit.core.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="nunit.core.interfaces">
+      <HintPath>..\packages\NUnitTestAdapter.2.0.0\lib\nunit.core.interfaces.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="nunit.framework">
       <HintPath>..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
     </Reference>
+    <Reference Include="nunit.util">
+      <HintPath>..\packages\NUnitTestAdapter.2.0.0\lib\nunit.util.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="NUnit.VisualStudio.TestAdapter">
+      <HintPath>..\packages\NUnitTestAdapter.2.0.0\lib\NUnit.VisualStudio.TestAdapter.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async">
       <HintPath>..\packages\Ix-Async.1.2.3\lib\net45\System.Interactive.Async.dll</HintPath>
@@ -44,13 +60,15 @@
     <Compile Include="ClientServerTest.cs" />
     <Compile Include="ServerTest.cs" />
     <Compile Include="GrpcEnvironmentTest.cs" />
-    <Compile Include="TimespecTest.cs" />
     <Compile Include="PInvokeTest.cs" />
     <Compile Include="Internal\MetadataArraySafeHandleTest.cs" />
     <Compile Include="Internal\CompletionQueueSafeHandleTest.cs" />
     <Compile Include="Internal\CompletionQueueEventTest.cs" />
     <Compile Include="Internal\ChannelArgsSafeHandleTest.cs" />
     <Compile Include="ChannelOptionsTest.cs" />
+    <Compile Include="Internal\TimespecTest.cs" />
+    <Compile Include="TimeoutsTest.cs" />
+    <Compile Include="NUnitVersionTest.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
@@ -60,7 +78,9 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <None Include="packages.config" />
+    <None Include="packages.config">
+      <SubType>Designer</SubType>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
diff --git a/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs b/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
index e03e20c4f7..46469113c5 100644
--- a/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
+++ b/src/csharp/Grpc.Core.Tests/Internal/MetadataArraySafeHandleTest.cs
@@ -59,5 +59,26 @@ namespace Grpc.Core.Internal.Tests
             var nativeMetadata = MetadataArraySafeHandle.Create(metadata);
             nativeMetadata.Dispose();
         }
+
+        [Test]
+        public void ReadMetadataFromPtrUnsafe()
+        {
+            var metadata = new Metadata
+            {
+                new Metadata.Entry("host", "somehost"),
+                new Metadata.Entry("header2", "header value"),
+            };
+            var nativeMetadata = MetadataArraySafeHandle.Create(metadata);
+
+            var copy = MetadataArraySafeHandle.ReadMetadataFromPtrUnsafe(nativeMetadata.Handle);
+            Assert.AreEqual(2, copy.Count);
+
+            Assert.AreEqual("host", copy[0].Key);
+            Assert.AreEqual("somehost", copy[0].Value);
+            Assert.AreEqual("header2", copy[1].Key);
+            Assert.AreEqual("header value", copy[1].Value);
+
+            nativeMetadata.Dispose();
+        }
     }
 }
diff --git a/src/csharp/Grpc.Core.Tests/Internal/TimespecTest.cs b/src/csharp/Grpc.Core.Tests/Internal/TimespecTest.cs
new file mode 100644
index 0000000000..874df02baa
--- /dev/null
+++ b/src/csharp/Grpc.Core.Tests/Internal/TimespecTest.cs
@@ -0,0 +1,202 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Runtime.InteropServices;
+using Grpc.Core.Internal;
+using NUnit.Framework;
+
+namespace Grpc.Core.Internal.Tests
+{
+    public class TimespecTest
+    {
+        [Test]
+        public void Now_IsInUtc() 
+        {
+            Assert.AreEqual(DateTimeKind.Utc, Timespec.Now.ToDateTime().Kind);
+        }
+
+        [Test]
+        public void Now_AgreesWithUtcNow()
+        {
+            var timespec = Timespec.Now;
+            var utcNow = DateTime.UtcNow;
+
+            TimeSpan difference = utcNow - timespec.ToDateTime();
+
+            // This test is inherently a race - but the two timestamps
+            // should really be way less that a minute apart.
+            Assert.IsTrue(difference.TotalSeconds < 60);
+        }
+
+        [Test]
+        public void InfFuture()
+        {
+            var timespec = Timespec.InfFuture;
+        }
+
+        [Test]
+        public void InfPast()
+        {
+            var timespec = Timespec.InfPast;
+        }
+
+        [Test]
+        public void TimespecSizeIsNativeSize()
+        {
+            Assert.AreEqual(Timespec.NativeSize, Marshal.SizeOf(typeof(Timespec)));
+        }
+
+        [Test]
+        public void ToDateTime()
+        {
+            Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc),
+                new Timespec(IntPtr.Zero, 0).ToDateTime());
+
+            Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 10, DateTimeKind.Utc).AddTicks(50),
+                new Timespec(new IntPtr(10), 5000).ToDateTime());
+
+            Assert.AreEqual(new DateTime(2015, 7, 21, 4, 21, 48, DateTimeKind.Utc),
+                new Timespec(new IntPtr(1437452508), 0).ToDateTime());
+
+            // before epoch
+            Assert.AreEqual(new DateTime(1969, 12, 31, 23, 59, 55, DateTimeKind.Utc).AddTicks(10),
+                new Timespec(new IntPtr(-5), 1000).ToDateTime());
+
+            // infinity
+            Assert.AreEqual(DateTime.MaxValue, Timespec.InfFuture.ToDateTime());
+            Assert.AreEqual(DateTime.MinValue, Timespec.InfPast.ToDateTime());
+
+            // nanos are rounded to ticks are rounded up
+            Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddTicks(1),
+                new Timespec(IntPtr.Zero, 99).ToDateTime());
+
+            // Illegal inputs
+            Assert.Throws(typeof(InvalidOperationException),
+                () => new Timespec(new IntPtr(0), -2).ToDateTime());
+            Assert.Throws(typeof(InvalidOperationException),
+                () => new Timespec(new IntPtr(0), 1000 * 1000 * 1000).ToDateTime());
+            Assert.Throws(typeof(InvalidOperationException),
+                () => new Timespec(new IntPtr(0), 0, GPRClockType.Monotonic).ToDateTime());
+        }
+
+        [Test]
+        public void ToDateTime_ReturnsUtc()
+        {
+            Assert.AreEqual(DateTimeKind.Utc, new Timespec(new IntPtr(1437452508), 0).ToDateTime().Kind);
+            Assert.AreNotEqual(DateTimeKind.Unspecified, new Timespec(new IntPtr(1437452508), 0).ToDateTime().Kind);
+        }
+
+        [Test]
+        public void ToDateTime_Overflow()
+        {
+            // we can only get overflow in ticks arithmetic on 64-bit
+            if (IntPtr.Size == 8)
+            {
+                var timespec = new Timespec(new IntPtr(long.MaxValue - 100), 0);
+                Assert.AreNotEqual(Timespec.InfFuture, timespec);
+                Assert.AreEqual(DateTime.MaxValue, timespec.ToDateTime());
+
+                Assert.AreEqual(DateTime.MinValue, new Timespec(new IntPtr(long.MinValue + 100), 0).ToDateTime());
+            }
+            else
+            {
+                Console.WriteLine("Test cannot be run on this platform, skipping the test.");
+            }
+        }
+
+        [Test]
+        public void ToDateTime_OutOfDateTimeRange()
+        {
+            // we can only get out of range on 64-bit, on 32 bit the max 
+            // timestamp is ~ Jan 19 2038, which is far within range of DateTime
+            // same case for min value.
+            if (IntPtr.Size == 8)
+            {
+                // DateTime range goes up to year 9999, 20000 years from now should
+                // be out of range.
+                long seconds = 20000L * 365L * 24L * 3600L; 
+
+                var timespec = new Timespec(new IntPtr(seconds), 0);
+                Assert.AreNotEqual(Timespec.InfFuture, timespec);
+                Assert.AreEqual(DateTime.MaxValue, timespec.ToDateTime());
+
+                Assert.AreEqual(DateTime.MinValue, new Timespec(new IntPtr(-seconds), 0).ToDateTime());
+            }
+            else
+            {
+                Console.WriteLine("Test cannot be run on this platform, skipping the test");
+            }
+        }
+
+        [Test]
+        public void FromDateTime()
+        {
+            Assert.AreEqual(new Timespec(IntPtr.Zero, 0),
+                Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)));
+
+            Assert.AreEqual(new Timespec(new IntPtr(10), 5000),
+                Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 10, DateTimeKind.Utc).AddTicks(50)));
+
+            Assert.AreEqual(new Timespec(new IntPtr(1437452508), 0),
+                Timespec.FromDateTime(new DateTime(2015, 7, 21, 4, 21, 48, DateTimeKind.Utc)));
+
+            // before epoch
+            Assert.AreEqual(new Timespec(new IntPtr(-5), 1000),
+                Timespec.FromDateTime(new DateTime(1969, 12, 31, 23, 59, 55, DateTimeKind.Utc).AddTicks(10)));
+
+            // infinity
+            Assert.AreEqual(Timespec.InfFuture, Timespec.FromDateTime(DateTime.MaxValue));
+            Assert.AreEqual(Timespec.InfPast, Timespec.FromDateTime(DateTime.MinValue));
+
+            // illegal inputs
+            Assert.Throws(typeof(ArgumentException),
+                () => Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Unspecified)));
+        }
+
+        [Test]
+        public void FromDateTime_OutOfTimespecRange()
+        {
+            // we can only get overflow in Timespec on 32-bit
+            if (IntPtr.Size == 4)
+            {
+                Assert.AreEqual(Timespec.InfFuture, Timespec.FromDateTime(new DateTime(2040, 1, 1, 0, 0, 0, DateTimeKind.Utc)));
+                Assert.AreEqual(Timespec.InfPast, Timespec.FromDateTime(new DateTime(1800, 1, 1, 0, 0, 0, DateTimeKind.Utc)));
+            }
+            else
+            {
+                Console.WriteLine("Test cannot be run on this platform, skipping the test.");
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core.Tests/TimespecTest.cs b/src/csharp/Grpc.Core.Tests/NUnitVersionTest.cs
index 5831121add..600df1a18d 100644
--- a/src/csharp/Grpc.Core.Tests/TimespecTest.cs
+++ b/src/csharp/Grpc.Core.Tests/NUnitVersionTest.cs
@@ -32,57 +32,48 @@
 #endregion
 
 using System;
-using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
 using Grpc.Core.Internal;
+using Grpc.Core.Utils;
 using NUnit.Framework;
 
-namespace Grpc.Core.Internal.Tests
+namespace Grpc.Core.Tests
 {
-    public class TimespecTest
+    /// <summary>
+    /// Tests if the version of nunit-console used is sufficient to run async tests.
+    /// </summary>
+    public class NUnitVersionTest
     {
-        [Test]
-        public void Now()
-        {
-            var timespec = Timespec.Now;
-        }
+        private int testRunCount = 0;
 
-        [Test]
-        public void InfFuture()
+        [TestFixtureTearDown]
+        public void Cleanup()
         {
-            var timespec = Timespec.InfFuture;
+            if (testRunCount != 2)
+            {
+                Console.Error.WriteLine("You are using and old version of NUnit that doesn't support async tests and skips them instead. " +
+                "This test has failed to indicate that.");
+                Console.Error.Flush();
+                Environment.Exit(1);
+            }
         }
 
         [Test]
-        public void TimespecSizeIsNativeSize()
+        public void NUnitVersionTest1()
         {
-            Assert.AreEqual(Timespec.NativeSize, Marshal.SizeOf(typeof(Timespec)));
+            testRunCount++;
         }
 
+        // Old version of NUnit will skip this test
         [Test]
-        public void Add()
+        public async Task NUnitVersionTest2()
         {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 123456789 };
-            var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10));
-            Assert.AreEqual(result.tv_sec, new IntPtr(12355));
-            Assert.AreEqual(result.tv_nsec, 123456789);
+            testRunCount ++;
+            await Task.Delay(10);
         }
 
-        [Test]
-        public void Add_Nanos()
-        {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 123456789 };
-            var result = t.Add(TimeSpan.FromTicks(10));
-            Assert.AreEqual(result.tv_sec, new IntPtr(12345));
-            Assert.AreEqual(result.tv_nsec, 123456789 + 1000);
-        }
 
-        [Test]
-        public void Add_NanosOverflow()
-        {
-            var t = new Timespec { tv_sec = new IntPtr(12345), tv_nsec = 999999999 };
-            var result = t.Add(TimeSpan.FromTicks(TimeSpan.TicksPerSecond * 10 + 10));
-            Assert.AreEqual(result.tv_sec, new IntPtr(12356));
-            Assert.AreEqual(result.tv_nsec, 999);
-        }
     }
 }
diff --git a/src/csharp/Grpc.Core.Tests/ServerTest.cs b/src/csharp/Grpc.Core.Tests/ServerTest.cs
index 1119aa370e..ba9efae871 100644
--- a/src/csharp/Grpc.Core.Tests/ServerTest.cs
+++ b/src/csharp/Grpc.Core.Tests/ServerTest.cs
@@ -45,7 +45,7 @@ namespace Grpc.Core.Tests
         public void StartAndShutdownServer()
         {
             Server server = new Server();
-            server.AddListeningPort("localhost", Server.PickUnusedPort);
+            server.AddPort("localhost", Server.PickUnusedPort, ServerCredentials.Insecure);
             server.Start();
             server.ShutdownAsync().Wait();
             GrpcEnvironment.Shutdown();
diff --git a/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs b/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs
new file mode 100644
index 0000000000..010ffd898a
--- /dev/null
+++ b/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs
@@ -0,0 +1,207 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Grpc.Core;
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.Core.Tests
+{
+    /// <summary>
+    /// Tests for Deadline support.
+    /// </summary>
+    public class TimeoutsTest
+    {
+        const string Host = "localhost";
+        const string ServiceName = "/tests.Test";
+
+        static readonly Method<string, string> TestMethod = new Method<string, string>(
+            MethodType.Unary,
+            "/tests.Test/Test",
+            Marshallers.StringMarshaller,
+            Marshallers.StringMarshaller);
+
+        static readonly ServerServiceDefinition ServiceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName)
+            .AddMethod(TestMethod, TestMethodHandler)
+            .Build();
+
+        // provides a way how to retrieve an out-of-band result value from server handler
+        static TaskCompletionSource<string> stringFromServerHandlerTcs;
+
+        Server server;
+        Channel channel;
+
+        [SetUp]
+        public void Init()
+        {
+            server = new Server();
+            server.AddServiceDefinition(ServiceDefinition);
+            int port = server.AddPort(Host, Server.PickUnusedPort, ServerCredentials.Insecure);
+            server.Start();
+            channel = new Channel(Host, port, Credentials.Insecure);
+
+            stringFromServerHandlerTcs = new TaskCompletionSource<string>();
+        }
+
+        [TearDown]
+        public void Cleanup()
+        {
+            channel.Dispose();
+            server.ShutdownAsync().Wait();
+        }
+
+        [TestFixtureTearDown]
+        public void CleanupClass()
+        {
+            GrpcEnvironment.Shutdown();
+        }
+
+        [Test]
+        public void InfiniteDeadline()
+        {
+            // no deadline specified, check server sees infinite deadline
+            var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty);
+            Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None));
+
+            // DateTime.MaxValue deadline specified, check server sees infinite deadline
+            var internalCall2 = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, DateTime.MaxValue);
+            Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall2, "RETURN_DEADLINE", CancellationToken.None));
+        }
+
+        [Test]
+        public void DeadlineTransferredToServer()
+        {
+            var remainingTimeClient = TimeSpan.FromDays(7);
+            var deadline = DateTime.UtcNow + remainingTimeClient;
+            Thread.Sleep(1000);
+            var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline);
+
+            var serverDeadlineTicksString = Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None);
+            var serverDeadline = new DateTime(long.Parse(serverDeadlineTicksString), DateTimeKind.Utc);
+
+            // A fairly relaxed check that the deadline set by client and deadline seen by server
+            // are in agreement. C core takes care of the work with transferring deadline over the wire,
+            // so we don't need an exact check here.
+            Assert.IsTrue(Math.Abs((deadline - serverDeadline).TotalMilliseconds) < 5000);
+        }
+
+        [Test]
+        public void DeadlineInThePast()
+        {
+            var deadline = DateTime.MinValue;
+            var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline);
+
+            try
+            {
+                Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode);
+            }
+        }
+
+        [Test]
+        public void DeadlineExceededStatusOnTimeout()
+        {
+            var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5));
+            var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline);
+
+            try
+            {
+                Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode);
+            }
+        }
+
+        [Test]
+        public void ServerReceivesCancellationOnTimeout()
+        {
+            var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5));
+            var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline);
+
+            try
+            {
+                Calls.BlockingUnaryCall(internalCall, "CHECK_CANCELLATION_RECEIVED", CancellationToken.None);
+                Assert.Fail();
+            }
+            catch (RpcException e)
+            {
+                Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode);
+            }
+            Assert.AreEqual("CANCELLED", stringFromServerHandlerTcs.Task.Result);
+        }
+            
+        private static async Task<string> TestMethodHandler(string request, ServerCallContext context)
+        {
+            if (request == "TIMEOUT")
+            {
+                await Task.Delay(60000);
+                return "";
+            }
+
+            if (request == "RETURN_DEADLINE")
+            {
+                if (context.Deadline == DateTime.MaxValue)
+                {
+                    return "DATETIME_MAXVALUE";
+                }
+
+                return context.Deadline.Ticks.ToString();
+            }
+
+            if (request == "CHECK_CANCELLATION_RECEIVED")
+            {
+                // wait until cancellation token is fired.
+                var tcs = new TaskCompletionSource<object>();
+                context.CancellationToken.Register(() => { tcs.SetResult(null); });
+                await tcs.Task;
+                stringFromServerHandlerTcs.SetResult("CANCELLED");
+                return "";
+            }
+
+            return "";
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core.Tests/packages.config b/src/csharp/Grpc.Core.Tests/packages.config
index 28af8d78c6..62077f41be 100644
--- a/src/csharp/Grpc.Core.Tests/packages.config
+++ b/src/csharp/Grpc.Core.Tests/packages.config
@@ -2,4 +2,5 @@
 <packages>
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
   <package id="NUnit" version="2.6.4" targetFramework="net45" />
+  <package id="NUnitTestAdapter" version="2.0.0" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core/AsyncClientStreamingCall.cs b/src/csharp/Grpc.Core/AsyncClientStreamingCall.cs
index d66b0d4974..bf020cd627 100644
--- a/src/csharp/Grpc.Core/AsyncClientStreamingCall.cs
+++ b/src/csharp/Grpc.Core/AsyncClientStreamingCall.cs
@@ -43,24 +43,28 @@ namespace Grpc.Core
     public sealed class AsyncClientStreamingCall<TRequest, TResponse> : IDisposable
     {
         readonly IClientStreamWriter<TRequest> requestStream;
-        readonly Task<TResponse> result;
+        readonly Task<TResponse> responseAsync;
+        readonly Func<Status> getStatusFunc;
+        readonly Func<Metadata> getTrailersFunc;
         readonly Action disposeAction;
 
-        public AsyncClientStreamingCall(IClientStreamWriter<TRequest> requestStream, Task<TResponse> result, Action disposeAction)
+        public AsyncClientStreamingCall(IClientStreamWriter<TRequest> requestStream, Task<TResponse> responseAsync, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction)
         {
             this.requestStream = requestStream;
-            this.result = result;
+            this.responseAsync = responseAsync;
+            this.getStatusFunc = getStatusFunc;
+            this.getTrailersFunc = getTrailersFunc;
             this.disposeAction = disposeAction;
         }
 
         /// <summary>
         /// Asynchronous call result.
         /// </summary>
-        public Task<TResponse> Result
+        public Task<TResponse> ResponseAsync
         {
             get
             {
-                return this.result;
+                return this.responseAsync;
             }
         }
 
@@ -81,11 +85,11 @@ namespace Grpc.Core
         /// <returns></returns>
         public TaskAwaiter<TResponse> GetAwaiter()
         {
-            return result.GetAwaiter();
+            return responseAsync.GetAwaiter();
         }
 
         /// <summary>
-        /// Provides means to provide after the call.
+        /// Provides means to cleanup after the call.
         /// If the call has already finished normally (request stream has been completed and call result has been received), doesn't do anything.
         /// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call.
         /// As a result, all resources being used by the call should be released eventually.
diff --git a/src/csharp/Grpc.Core/AsyncDuplexStreamingCall.cs b/src/csharp/Grpc.Core/AsyncDuplexStreamingCall.cs
index 4c0d5936ac..0979de606f 100644
--- a/src/csharp/Grpc.Core/AsyncDuplexStreamingCall.cs
+++ b/src/csharp/Grpc.Core/AsyncDuplexStreamingCall.cs
@@ -44,12 +44,16 @@ namespace Grpc.Core
     {
         readonly IClientStreamWriter<TRequest> requestStream;
         readonly IAsyncStreamReader<TResponse> responseStream;
+        readonly Func<Status> getStatusFunc;
+        readonly Func<Metadata> getTrailersFunc;
         readonly Action disposeAction;
 
-        public AsyncDuplexStreamingCall(IClientStreamWriter<TRequest> requestStream, IAsyncStreamReader<TResponse> responseStream, Action disposeAction)
+        public AsyncDuplexStreamingCall(IClientStreamWriter<TRequest> requestStream, IAsyncStreamReader<TResponse> responseStream, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction)
         {
             this.requestStream = requestStream;
             this.responseStream = responseStream;
+            this.getStatusFunc = getStatusFunc;
+            this.getTrailersFunc = getTrailersFunc;
             this.disposeAction = disposeAction;
         }
 
@@ -76,6 +80,24 @@ namespace Grpc.Core
         }
 
         /// <summary>
+        /// Gets the call status if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Status GetStatus()
+        {
+            return getStatusFunc();
+        }
+
+        /// <summary>
+        /// Gets the call trailing metadata if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Metadata GetTrailers()
+        {
+            return getTrailersFunc();
+        }
+
+        /// <summary>
         /// Provides means to cleanup after the call.
         /// If the call has already finished normally (request stream has been completed and response stream has been fully read), doesn't do anything.
         /// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call.
diff --git a/src/csharp/Grpc.Core/AsyncServerStreamingCall.cs b/src/csharp/Grpc.Core/AsyncServerStreamingCall.cs
index 7a479b9a23..380efcdb0e 100644
--- a/src/csharp/Grpc.Core/AsyncServerStreamingCall.cs
+++ b/src/csharp/Grpc.Core/AsyncServerStreamingCall.cs
@@ -43,11 +43,15 @@ namespace Grpc.Core
     public sealed class AsyncServerStreamingCall<TResponse> : IDisposable
     {
         readonly IAsyncStreamReader<TResponse> responseStream;
+        readonly Func<Status> getStatusFunc;
+        readonly Func<Metadata> getTrailersFunc;
         readonly Action disposeAction;
 
-        public AsyncServerStreamingCall(IAsyncStreamReader<TResponse> responseStream, Action disposeAction)
+        public AsyncServerStreamingCall(IAsyncStreamReader<TResponse> responseStream, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction)
         {
             this.responseStream = responseStream;
+            this.getStatusFunc = getStatusFunc;
+            this.getTrailersFunc = getTrailersFunc;
             this.disposeAction = disposeAction;
         }
 
@@ -63,6 +67,24 @@ namespace Grpc.Core
         }
 
         /// <summary>
+        /// Gets the call status if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Status GetStatus()
+        {
+            return getStatusFunc();
+        }
+
+        /// <summary>
+        /// Gets the call trailing metadata if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Metadata GetTrailers()
+        {
+            return getTrailersFunc();
+        }
+
+        /// <summary>
         /// Provides means to cleanup after the call.
         /// If the call has already finished normally (response stream has been fully read), doesn't do anything.
         /// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call.
diff --git a/src/csharp/Grpc.Core/AsyncUnaryCall.cs b/src/csharp/Grpc.Core/AsyncUnaryCall.cs
new file mode 100644
index 0000000000..224e343916
--- /dev/null
+++ b/src/csharp/Grpc.Core/AsyncUnaryCall.cs
@@ -0,0 +1,106 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Return type for single request - single response call.
+    /// </summary>
+    public sealed class AsyncUnaryCall<TResponse> : IDisposable
+    {
+        readonly Task<TResponse> responseAsync;
+        readonly Func<Status> getStatusFunc;
+        readonly Func<Metadata> getTrailersFunc;
+        readonly Action disposeAction;
+
+        public AsyncUnaryCall(Task<TResponse> responseAsync, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction)
+        {
+            this.responseAsync = responseAsync;
+            this.getStatusFunc = getStatusFunc;
+            this.getTrailersFunc = getTrailersFunc;
+            this.disposeAction = disposeAction;
+        }
+
+        /// <summary>
+        /// Asynchronous call result.
+        /// </summary>
+        public Task<TResponse> ResponseAsync
+        {
+            get
+            {
+                return this.responseAsync;
+            }
+        }
+
+        /// <summary>
+        /// Allows awaiting this object directly.
+        /// </summary>
+        public TaskAwaiter<TResponse> GetAwaiter()
+        {
+            return responseAsync.GetAwaiter();
+        }
+
+        /// <summary>
+        /// Gets the call status if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Status GetStatus()
+        {
+            return getStatusFunc();
+        }
+
+        /// <summary>
+        /// Gets the call trailing metadata if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Metadata GetTrailers()
+        {
+            return getTrailersFunc();
+        }
+
+        /// <summary>
+        /// Provides means to cleanup after the call.
+        /// If the call has already finished normally (request stream has been completed and call result has been received), doesn't do anything.
+        /// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call.
+        /// As a result, all resources being used by the call should be released eventually.
+        /// </summary>
+        public void Dispose()
+        {
+            disposeAction.Invoke();
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/Call.cs b/src/csharp/Grpc.Core/Call.cs
index 37b452f020..94c5e26082 100644
--- a/src/csharp/Grpc.Core/Call.cs
+++ b/src/csharp/Grpc.Core/Call.cs
@@ -47,14 +47,21 @@ namespace Grpc.Core
         readonly Marshaller<TResponse> responseMarshaller;
         readonly Channel channel;
         readonly Metadata headers;
+        readonly DateTime deadline;
 
         public Call(string serviceName, Method<TRequest, TResponse> method, Channel channel, Metadata headers)
+            : this(serviceName, method, channel, headers, DateTime.MaxValue)
+        {
+        }
+
+        public Call(string serviceName, Method<TRequest, TResponse> method, Channel channel, Metadata headers, DateTime deadline)
         {
             this.name = method.GetFullName(serviceName);
             this.requestMarshaller = method.RequestMarshaller;
             this.responseMarshaller = method.ResponseMarshaller;
             this.channel = Preconditions.CheckNotNull(channel);
             this.headers = Preconditions.CheckNotNull(headers);
+            this.deadline = deadline;
         }
 
         public Channel Channel
@@ -87,6 +94,14 @@ namespace Grpc.Core
             }
         }
 
+        public DateTime Deadline
+        {
+            get
+            {
+                return this.deadline;
+            }
+        }
+
         public Marshaller<TRequest> RequestMarshaller
         {
             get
diff --git a/src/csharp/Grpc.Core/Calls.cs b/src/csharp/Grpc.Core/Calls.cs
index 9e95182c72..054fc27491 100644
--- a/src/csharp/Grpc.Core/Calls.cs
+++ b/src/csharp/Grpc.Core/Calls.cs
@@ -50,18 +50,18 @@ namespace Grpc.Core
             var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer);
             // TODO(jtattermusch): this gives a race that cancellation can be requested before the call even starts.
             RegisterCancellationCallback(asyncCall, token);
-            return asyncCall.UnaryCall(call.Channel, call.Name, req, call.Headers);
+            return asyncCall.UnaryCall(call.Channel, call.Name, req, call.Headers, call.Deadline);
         }
 
-        public static async Task<TResponse> AsyncUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token)
+        public static AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token)
             where TRequest : class
             where TResponse : class
         {
             var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer);
-            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name);
-            var asyncResult = asyncCall.UnaryCallAsync(req, call.Headers);
+            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name, Timespec.FromDateTime(call.Deadline));
+            var asyncResult = asyncCall.UnaryCallAsync(req, call.Headers, call.Deadline);
             RegisterCancellationCallback(asyncCall, token);
-            return await asyncResult;
+            return new AsyncUnaryCall<TResponse>(asyncResult, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel);
         }
 
         public static AsyncServerStreamingCall<TResponse> AsyncServerStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token)
@@ -69,11 +69,11 @@ namespace Grpc.Core
             where TResponse : class
         {
             var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer);
-            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name);
-            asyncCall.StartServerStreamingCall(req, call.Headers);
+            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name, Timespec.FromDateTime(call.Deadline));
+            asyncCall.StartServerStreamingCall(req, call.Headers, call.Deadline);
             RegisterCancellationCallback(asyncCall, token);
             var responseStream = new ClientResponseStream<TRequest, TResponse>(asyncCall);
-            return new AsyncServerStreamingCall<TResponse>(responseStream, asyncCall.Cancel);
+            return new AsyncServerStreamingCall<TResponse>(responseStream, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel);
         }
 
         public static AsyncClientStreamingCall<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, CancellationToken token)
@@ -81,11 +81,11 @@ namespace Grpc.Core
             where TResponse : class
         {
             var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer);
-            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name);
-            var resultTask = asyncCall.ClientStreamingCallAsync(call.Headers);
+            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name, Timespec.FromDateTime(call.Deadline));
+            var resultTask = asyncCall.ClientStreamingCallAsync(call.Headers, call.Deadline);
             RegisterCancellationCallback(asyncCall, token);
             var requestStream = new ClientRequestStream<TRequest, TResponse>(asyncCall);
-            return new AsyncClientStreamingCall<TRequest, TResponse>(requestStream, resultTask, asyncCall.Cancel);
+            return new AsyncClientStreamingCall<TRequest, TResponse>(requestStream, resultTask, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel);
         }
 
         public static AsyncDuplexStreamingCall<TRequest, TResponse> AsyncDuplexStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, CancellationToken token)
@@ -93,12 +93,12 @@ namespace Grpc.Core
             where TResponse : class
         {
             var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer);
-            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name);
-            asyncCall.StartDuplexStreamingCall(call.Headers);
+            asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name, Timespec.FromDateTime(call.Deadline));
+            asyncCall.StartDuplexStreamingCall(call.Headers, call.Deadline);
             RegisterCancellationCallback(asyncCall, token);
             var requestStream = new ClientRequestStream<TRequest, TResponse>(asyncCall);
             var responseStream = new ClientResponseStream<TRequest, TResponse>(asyncCall);
-            return new AsyncDuplexStreamingCall<TRequest, TResponse>(requestStream, responseStream, asyncCall.Cancel);
+            return new AsyncDuplexStreamingCall<TRequest, TResponse>(requestStream, responseStream, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel);
         }
 
         private static void RegisterCancellationCallback<TRequest, TResponse>(AsyncCall<TRequest, TResponse> asyncCall, CancellationToken token)
diff --git a/src/csharp/Grpc.Core/Channel.cs b/src/csharp/Grpc.Core/Channel.cs
index 5baf260003..18e6f2fda5 100644
--- a/src/csharp/Grpc.Core/Channel.cs
+++ b/src/csharp/Grpc.Core/Channel.cs
@@ -28,11 +28,14 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endregion
+
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
+
 using Grpc.Core.Internal;
 
 namespace Grpc.Core
@@ -44,6 +47,7 @@ namespace Grpc.Core
     {
         readonly GrpcEnvironment environment;
         readonly ChannelSafeHandle handle;
+        readonly List<ChannelOption> options;
         readonly string target;
         bool disposed;
 
@@ -52,26 +56,27 @@ namespace Grpc.Core
         /// Port will default to 80 for an unsecure channel and to 443 a secure channel.
         /// </summary>
         /// <param name="host">The DNS name of IP address of the host.</param>
-        /// <param name="credentials">Optional credentials to create a secure channel.</param>
+        /// <param name="credentials">Credentials to secure the channel.</param>
         /// <param name="options">Channel options.</param>
-        public Channel(string host, Credentials credentials = null, IEnumerable<ChannelOption> options = null)
+        public Channel(string host, Credentials credentials, IEnumerable<ChannelOption> options = null)
         {
             this.environment = GrpcEnvironment.GetInstance();
-            using (ChannelArgsSafeHandle nativeChannelArgs = ChannelOptions.CreateChannelArgs(options))
+            this.options = options != null ? new List<ChannelOption>(options) : new List<ChannelOption>();
+
+            EnsureUserAgentChannelOption(this.options);
+            using (CredentialsSafeHandle nativeCredentials = credentials.ToNativeCredentials())
+            using (ChannelArgsSafeHandle nativeChannelArgs = ChannelOptions.CreateChannelArgs(this.options))
             {
-                if (credentials != null)
+                if (nativeCredentials != null)
                 {
-                    using (CredentialsSafeHandle nativeCredentials = credentials.ToNativeCredentials())
-                    {
-                        this.handle = ChannelSafeHandle.CreateSecure(nativeCredentials, host, nativeChannelArgs);
-                    }
+                    this.handle = ChannelSafeHandle.CreateSecure(nativeCredentials, host, nativeChannelArgs);
                 }
                 else
                 {
-                    this.handle = ChannelSafeHandle.Create(host, nativeChannelArgs);
+                    this.handle = ChannelSafeHandle.CreateInsecure(host, nativeChannelArgs);
                 }
             }
-            this.target = GetOverridenTarget(host, options);
+            this.target = GetOverridenTarget(host, this.options);
         }
 
         /// <summary>
@@ -79,9 +84,9 @@ namespace Grpc.Core
         /// </summary>
         /// <param name="host">DNS name or IP address</param>
         /// <param name="port">the port</param>
-        /// <param name="credentials">Optional credentials to create a secure channel.</param>
+        /// <param name="credentials">Credentials to secure the channel.</param>
         /// <param name="options">Channel options.</param>
-        public Channel(string host, int port, Credentials credentials = null, IEnumerable<ChannelOption> options = null) :
+        public Channel(string host, int port, Credentials credentials, IEnumerable<ChannelOption> options = null) :
             this(string.Format("{0}:{1}", host, port), credentials, options)
         {
         }
@@ -141,6 +146,20 @@ namespace Grpc.Core
             }
         }
 
+        private static void EnsureUserAgentChannelOption(List<ChannelOption> options)
+        {
+            if (!options.Any((option) => option.Name == ChannelOptions.PrimaryUserAgentString))
+            {
+                options.Add(new ChannelOption(ChannelOptions.PrimaryUserAgentString, GetUserAgentString()));
+            }
+        }
+
+        private static string GetUserAgentString()
+        {
+            // TODO(jtattermusch): it would be useful to also provide .NET/mono version.
+            return string.Format("grpc-csharp/{0}", VersionInfo.CurrentVersion);
+        }
+
         /// <summary>
         /// Look for SslTargetNameOverride option and return its value instead of originalTarget
         /// if found.
diff --git a/src/csharp/Grpc.Core/ChannelOptions.cs b/src/csharp/Grpc.Core/ChannelOptions.cs
index bc23bb59b1..9fe03d2805 100644
--- a/src/csharp/Grpc.Core/ChannelOptions.cs
+++ b/src/csharp/Grpc.Core/ChannelOptions.cs
@@ -115,41 +115,49 @@ namespace Grpc.Core
         }
     }
 
+    /// <summary>
+    /// Defines names of supported channel options.
+    /// </summary>
     public static class ChannelOptions
     {
-        // Override SSL target check. Only to be used for testing.
+        /// <summary>Override SSL target check. Only to be used for testing.</summary>
         public const string SslTargetNameOverride = "grpc.ssl_target_name_override";
 
-        // Enable census for tracing and stats collection
+        /// <summary>Enable census for tracing and stats collection</summary>
         public const string Census = "grpc.census";
 
-        // Maximum number of concurrent incoming streams to allow on a http2 connection
+        /// <summary>Maximum number of concurrent incoming streams to allow on a http2 connection</summary>
         public const string MaxConcurrentStreams = "grpc.max_concurrent_streams";
 
-        // Maximum message length that the channel can receive
+        /// <summary>Maximum message length that the channel can receive</summary>
         public const string MaxMessageLength = "grpc.max_message_length";
 
-        // Initial sequence number for http2 transports
+        /// <summary>Initial sequence number for http2 transports</summary>
         public const string Http2InitialSequenceNumber = "grpc.http2.initial_sequence_number";
 
+        /// <summary>Primary user agent: goes at the start of the user-agent metadata</summary>
+        public const string PrimaryUserAgentString = "grpc.primary_user_agent";
+
+        /// <summary> Secondary user agent: goes at the end of the user-agent metadata</summary>
+        public const string SecondaryUserAgentString = "grpc.secondary_user_agent";
+
         /// <summary>
         /// Creates native object for a collection of channel options.
         /// </summary>
         /// <returns>The native channel arguments.</returns>
-        internal static ChannelArgsSafeHandle CreateChannelArgs(IEnumerable<ChannelOption> options)
+        internal static ChannelArgsSafeHandle CreateChannelArgs(List<ChannelOption> options)
         {
-            if (options == null)
+            if (options == null || options.Count == 0)
             {
                 return ChannelArgsSafeHandle.CreateNull();
             }
-            var optionList = new List<ChannelOption>(options);  // It's better to do defensive copy
             ChannelArgsSafeHandle nativeArgs = null;
             try
             {
-                nativeArgs = ChannelArgsSafeHandle.Create(optionList.Count);
-                for (int i = 0; i < optionList.Count; i++)
+                nativeArgs = ChannelArgsSafeHandle.Create(options.Count);
+                for (int i = 0; i < options.Count; i++)
                 {
-                    var option = optionList[i];
+                    var option = options[i];
                     if (option.Type == ChannelOption.OptionType.Integer)
                     {
                         nativeArgs.SetInteger(i, option.Name, option.IntValue);
diff --git a/src/csharp/Grpc.Core/ClientBase.cs b/src/csharp/Grpc.Core/ClientBase.cs
index a099f96aea..fd3473128a 100644
--- a/src/csharp/Grpc.Core/ClientBase.cs
+++ b/src/csharp/Grpc.Core/ClientBase.cs
@@ -76,7 +76,7 @@ namespace Grpc.Core
         /// <summary>
         /// Creates a new call to given method.
         /// </summary>
-        protected Call<TRequest, TResponse> CreateCall<TRequest, TResponse>(string serviceName, Method<TRequest, TResponse> method, Metadata metadata)
+        protected Call<TRequest, TResponse> CreateCall<TRequest, TResponse>(string serviceName, Method<TRequest, TResponse> method, Metadata metadata, DateTime? deadline)
             where TRequest : class
             where TResponse : class
         {
@@ -87,8 +87,8 @@ namespace Grpc.Core
                 interceptor(metadata);
                 metadata.Freeze();
             }
-            metadata = metadata ?? Metadata.Empty;
-            return new Call<TRequest, TResponse>(serviceName, method, channel, metadata);
+            return new Call<TRequest, TResponse>(serviceName, method, channel,
+                    metadata ?? Metadata.Empty, deadline ?? DateTime.MaxValue);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Credentials.cs b/src/csharp/Grpc.Core/Credentials.cs
index e64c1e3dc1..4fcac0c4c0 100644
--- a/src/csharp/Grpc.Core/Credentials.cs
+++ b/src/csharp/Grpc.Core/Credentials.cs
@@ -41,39 +41,98 @@ namespace Grpc.Core
     /// </summary>
     public abstract class Credentials
     {
+        static readonly Credentials InsecureInstance = new InsecureCredentialsImpl();
+
+        /// <summary>
+        /// Returns instance of credential that provides no security and 
+        /// will result in creating an unsecure channel with no encryption whatsoever.
+        /// </summary>
+        public static Credentials Insecure
+        {
+            get
+            {
+                return InsecureInstance;
+            }
+        }
+
         /// <summary>
-        /// Creates native object for the credentials.
+        /// Creates native object for the credentials. May return null if insecure channel
+        /// should be created.
         /// </summary>
         /// <returns>The native credentials.</returns>
         internal abstract CredentialsSafeHandle ToNativeCredentials();
+
+        private sealed class InsecureCredentialsImpl : Credentials
+        {
+            internal override CredentialsSafeHandle ToNativeCredentials()
+            {
+                return null;
+            }
+        }
     }
 
     /// <summary>
     /// Client-side SSL credentials.
     /// </summary>
-    public class SslCredentials : Credentials
+    public sealed class SslCredentials : Credentials
     {
-        string pemRootCerts;
+        readonly string rootCertificates;
+        readonly KeyCertificatePair keyCertificatePair;
 
-        public SslCredentials(string pemRootCerts)
+        /// <summary>
+        /// Creates client-side SSL credentials loaded from
+        /// disk file pointed to by the GRPC_DEFAULT_SSL_ROOTS_FILE_PATH environment variable.
+        /// If that fails, gets the roots certificates from a well known place on disk.
+        /// </summary>
+        public SslCredentials() : this(null, null)
         {
-            this.pemRootCerts = pemRootCerts;
+        }
+
+        /// <summary>
+        /// Creates client-side SSL credentials from
+        /// a string containing PEM encoded root certificates.
+        /// </summary>
+        public SslCredentials(string rootCertificates) : this(rootCertificates, null)
+        {
+        }
+            
+        /// <summary>
+        /// Creates client-side SSL credentials.
+        /// </summary>
+        /// <param name="rootCertificates">string containing PEM encoded server root certificates.</param>
+        /// <param name="keyCertificatePair">a key certificate pair.</param>
+        public SslCredentials(string rootCertificates, KeyCertificatePair keyCertificatePair)
+        {
+            this.rootCertificates = rootCertificates;
+            this.keyCertificatePair = keyCertificatePair;
         }
 
         /// <summary>
         /// PEM encoding of the server root certificates.
         /// </summary>
-        public string RootCerts
+        public string RootCertificates
+        {
+            get
+            {
+                return this.rootCertificates;
+            }
+        }
+
+        /// <summary>
+        /// Client side key and certificate pair.
+        /// If null, client will not use key and certificate pair.
+        /// </summary>
+        public KeyCertificatePair KeyCertificatePair
         {
             get
             {
-                return this.pemRootCerts;
+                return this.keyCertificatePair;
             }
         }
 
         internal override CredentialsSafeHandle ToNativeCredentials()
         {
-            return CredentialsSafeHandle.CreateSslCredentials(pemRootCerts);
+            return CredentialsSafeHandle.CreateSslCredentials(rootCertificates, keyCertificatePair);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Grpc.Core.csproj b/src/csharp/Grpc.Core/Grpc.Core.csproj
index a227fe5477..0d879e9b1e 100644
--- a/src/csharp/Grpc.Core/Grpc.Core.csproj
+++ b/src/csharp/Grpc.Core/Grpc.Core.csproj
@@ -33,13 +33,12 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
-    <Reference Include="System.Collections.Immutable, Version=1.1.36.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-    </Reference>
     <Reference Include="System.Interactive.Async">
       <HintPath>..\packages\Ix-Async.1.2.3\lib\net45\System.Interactive.Async.dll</HintPath>
     </Reference>
+    <Reference Include="System.Collections.Immutable">
+      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AsyncDuplexStreamingCall.cs" />
@@ -48,7 +47,6 @@
     <Compile Include="IServerStreamWriter.cs" />
     <Compile Include="IAsyncStreamWriter.cs" />
     <Compile Include="IAsyncStreamReader.cs" />
-    <Compile Include="Internal\GrpcLog.cs" />
     <Compile Include="Version.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="RpcException.cs" />
@@ -102,6 +100,13 @@
     <Compile Include="Internal\CompletionRegistry.cs" />
     <Compile Include="Internal\BatchContextSafeHandle.cs" />
     <Compile Include="ChannelOptions.cs" />
+    <Compile Include="AsyncUnaryCall.cs" />
+    <Compile Include="VersionInfo.cs" />
+    <Compile Include="Internal\CStringSafeHandle.cs" />
+    <Compile Include="KeyCertificatePair.cs" />
+    <Compile Include="Logging\ILogger.cs" />
+    <Compile Include="Logging\ConsoleLogger.cs" />
+    <Compile Include="Internal\NativeLogRedirector.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Grpc.Core.nuspec" />
@@ -132,4 +137,7 @@
   </Target>
   <Import Project="..\packages\grpc.dependencies.openssl.redist.1.0.2.2\build\portable-net45\grpc.dependencies.openssl.redist.targets" Condition="Exists('..\packages\grpc.dependencies.openssl.redist.1.0.2.2\build\portable-net45\grpc.dependencies.openssl.redist.targets')" />
   <Import Project="..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets" Condition="Exists('..\packages\grpc.dependencies.zlib.redist.1.2.8.9\build\portable-net45\grpc.dependencies.zlib.redist.targets')" />
+  <ItemGroup>
+    <Folder Include="Logging\" />
+  </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core/GrpcEnvironment.cs b/src/csharp/Grpc.Core/GrpcEnvironment.cs
index 47d1651aab..034a66be3c 100644
--- a/src/csharp/Grpc.Core/GrpcEnvironment.cs
+++ b/src/csharp/Grpc.Core/GrpcEnvironment.cs
@@ -35,6 +35,7 @@ using System;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core
@@ -55,6 +56,8 @@ namespace Grpc.Core
         static object staticLock = new object();
         static GrpcEnvironment instance;
 
+        static ILogger logger = new ConsoleLogger();
+
         readonly GrpcThreadPool threadPool;
         readonly CompletionRegistry completionRegistry;
         readonly DebugStats debugStats = new DebugStats();
@@ -93,17 +96,38 @@ namespace Grpc.Core
         }
 
         /// <summary>
+        /// Gets application-wide logger used by gRPC.
+        /// </summary>
+        /// <value>The logger.</value>
+        public static ILogger Logger
+        {
+            get
+            {
+                return logger;
+            }
+        }
+
+        /// <summary>
+        /// Sets the application-wide logger that should be used by gRPC.
+        /// </summary>
+        public static void SetLogger(ILogger customLogger)
+        {
+            Preconditions.CheckNotNull(customLogger);
+            logger = customLogger;
+        }
+
+        /// <summary>
         /// Creates gRPC environment.
         /// </summary>
         private GrpcEnvironment()
         {
-            GrpcLog.RedirectNativeLogs(Console.Error);
+            NativeLogRedirector.Redirect();
             grpcsharp_init();
             completionRegistry = new CompletionRegistry(this);
             threadPool = new GrpcThreadPool(this, THREAD_POOL_SIZE);
             threadPool.Start();
             // TODO: use proper logging here
-            Console.WriteLine("GRPC initialized.");
+            Logger.Info("gRPC initialized.");
         }
 
         /// <summary>
@@ -154,8 +178,7 @@ namespace Grpc.Core
 
             debugStats.CheckOK();
 
-            // TODO: use proper logging here
-            Console.WriteLine("GRPC shutdown.");
+            Logger.Info("gRPC shutdown.");
         }
 
         /// <summary>
@@ -171,7 +194,7 @@ namespace Grpc.Core
                 }
                 catch (Exception e)
                 {
-                    Console.WriteLine("Error occured while shutting down GrpcEnvironment: " + e);
+                    Logger.Error(e, "Error occured while shutting down GrpcEnvironment.");
                 }
             });
         }
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCall.cs b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
index 24b75d1668..bfcb9366a1 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@@ -38,6 +38,7 @@ using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
 using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core.Internal
@@ -47,13 +48,15 @@ namespace Grpc.Core.Internal
     /// </summary>
     internal class AsyncCall<TRequest, TResponse> : AsyncCallBase<TRequest, TResponse>
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<AsyncCall<TRequest, TResponse>>();
+
         Channel channel;
 
         // Completion of a pending unary response if not null.
         TaskCompletionSource<TResponse> unaryResponseTcs;
 
-        // Set after status is received. Only used for streaming response calls.
-        Status? finishedStatus;
+        // Set after status is received. Used for both unary and streaming response calls.
+        ClientSideStatus? finishedStatus;
 
         bool readObserverCompleted;  // True if readObserver has already been completed.
 
@@ -61,10 +64,10 @@ namespace Grpc.Core.Internal
         {
         }
 
-        public void Initialize(Channel channel, CompletionQueueSafeHandle cq, string methodName)
+        public void Initialize(Channel channel, CompletionQueueSafeHandle cq, string methodName, Timespec deadline)
         {
             this.channel = channel;
-            var call = CallSafeHandle.Create(channel.Handle, channel.CompletionRegistry, cq, methodName, channel.Target, Timespec.InfFuture);
+            var call = channel.Handle.CreateCall(channel.CompletionRegistry, cq, methodName, channel.Target, deadline);
             channel.Environment.DebugStats.ActiveClientCalls.Increment();
             InitializeInternal(call);
         }
@@ -76,7 +79,7 @@ namespace Grpc.Core.Internal
         /// <summary>
         /// Blocking unary request - unary response call.
         /// </summary>
-        public TResponse UnaryCall(Channel channel, string methodName, TRequest msg, Metadata headers)
+        public TResponse UnaryCall(Channel channel, string methodName, TRequest msg, Metadata headers, DateTime deadline)
         {
             using (CompletionQueueSafeHandle cq = CompletionQueueSafeHandle.Create())
             {
@@ -86,7 +89,7 @@ namespace Grpc.Core.Internal
 
                 lock (myLock)
                 {
-                    Initialize(channel, cq, methodName);
+                    Initialize(channel, cq, methodName, Timespec.FromDateTime(deadline));
                     started = true;
                     halfcloseRequested = true;
                     readingDone = true;
@@ -106,7 +109,7 @@ namespace Grpc.Core.Internal
                         }
                         catch (Exception e)
                         {
-                            Console.WriteLine("Exception occured while invoking completion delegate: " + e);
+                            Logger.Error(e, "Exception occured while invoking completion delegate.");
                         }
                     }
                 }
@@ -126,7 +129,7 @@ namespace Grpc.Core.Internal
         /// <summary>
         /// Starts a unary request - unary response call.
         /// </summary>
-        public Task<TResponse> UnaryCallAsync(TRequest msg, Metadata headers)
+        public Task<TResponse> UnaryCallAsync(TRequest msg, Metadata headers, DateTime deadline)
         {
             lock (myLock)
             {
@@ -151,7 +154,7 @@ namespace Grpc.Core.Internal
         /// Starts a streamed request - unary response call.
         /// Use StartSendMessage and StartSendCloseFromClient to stream requests.
         /// </summary>
-        public Task<TResponse> ClientStreamingCallAsync(Metadata headers)
+        public Task<TResponse> ClientStreamingCallAsync(Metadata headers, DateTime deadline)
         {
             lock (myLock)
             {
@@ -173,7 +176,7 @@ namespace Grpc.Core.Internal
         /// <summary>
         /// Starts a unary request - streamed response call.
         /// </summary>
-        public void StartServerStreamingCall(TRequest msg, Metadata headers)
+        public void StartServerStreamingCall(TRequest msg, Metadata headers, DateTime deadline)
         {
             lock (myLock)
             {
@@ -196,7 +199,7 @@ namespace Grpc.Core.Internal
         /// Starts a streaming request - streaming response call.
         /// Use StartSendMessage and StartSendCloseFromClient to stream requests.
         /// </summary>
-        public void StartDuplexStreamingCall(Metadata headers)
+        public void StartDuplexStreamingCall(Metadata headers, DateTime deadline)
         {
             lock (myLock)
             {
@@ -249,6 +252,32 @@ namespace Grpc.Core.Internal
         }
 
         /// <summary>
+        /// Gets the resulting status if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Status GetStatus()
+        {
+            lock (myLock)
+            {
+                Preconditions.CheckState(finishedStatus.HasValue, "Status can only be accessed once the call has finished.");
+                return finishedStatus.Value.Status;
+            }
+        }
+
+        /// <summary>
+        /// Gets the trailing metadata if the call has already finished.
+        /// Throws InvalidOperationException otherwise.
+        /// </summary>
+        public Metadata GetTrailers()
+        {
+            lock (myLock)
+            {
+                Preconditions.CheckState(finishedStatus.HasValue, "Trailers can only be accessed once the call has finished.");
+                return finishedStatus.Value.Trailers;
+            }
+        }
+
+        /// <summary>
         /// On client-side, we only fire readCompletionDelegate once all messages have been read 
         /// and status has been received.
         /// </summary>
@@ -265,7 +294,7 @@ namespace Grpc.Core.Internal
 
                 if (shouldComplete)
                 {
-                    var status = finishedStatus.Value;
+                    var status = finishedStatus.Value.Status;
                     if (status.StatusCode != StatusCode.OK)
                     {
                         FireCompletion(completionDelegate, default(TResponse), new RpcException(status));
@@ -288,9 +317,13 @@ namespace Grpc.Core.Internal
         /// </summary>
         private void HandleUnaryResponse(bool success, BatchContextSafeHandle ctx)
         {
+            var fullStatus = ctx.GetReceivedStatusOnClient();
+
             lock (myLock)
             {
                 finished = true;
+                finishedStatus = fullStatus;
+
                 halfclosed = true;
 
                 ReleaseResourcesIfPossible();
@@ -302,7 +335,8 @@ namespace Grpc.Core.Internal
                 return;
             }
 
-            var status = ctx.GetReceivedStatus();
+            var status = fullStatus.Status;
+
             if (status.StatusCode != StatusCode.OK)
             {
                 unaryResponseTcs.SetException(new RpcException(status));
@@ -321,13 +355,13 @@ namespace Grpc.Core.Internal
         /// </summary>
         private void HandleFinished(bool success, BatchContextSafeHandle ctx)
         {
-            var status = ctx.GetReceivedStatus();
+            var fullStatus = ctx.GetReceivedStatusOnClient();
 
             AsyncCompletionDelegate<TResponse> origReadCompletionDelegate = null;
             lock (myLock)
             {
                 finished = true;
-                finishedStatus = status;
+                finishedStatus = fullStatus;
 
                 origReadCompletionDelegate = readCompletionDelegate;
 
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
index 64713c8c52..38f2a5baeb 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
@@ -38,6 +38,7 @@ using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
 using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core.Internal
@@ -48,6 +49,8 @@ namespace Grpc.Core.Internal
     /// </summary>
     internal abstract class AsyncCallBase<TWrite, TRead>
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<AsyncCallBase<TWrite, TRead>>();
+
         readonly Func<TWrite, byte[]> serializer;
         readonly Func<byte[], TRead> deserializer;
 
@@ -233,9 +236,9 @@ namespace Grpc.Core.Internal
                 payload = serializer(msg);
                 return true;
             }
-            catch (Exception)
+            catch (Exception e)
             {
-                Console.WriteLine("Exception occured while trying to serialize message");
+                Logger.Error(e, "Exception occured while trying to serialize message");
                 payload = null;
                 return false;
             }
@@ -248,9 +251,9 @@ namespace Grpc.Core.Internal
                 msg = deserializer(payload);
                 return true;
             } 
-            catch (Exception)
+            catch (Exception e)
             {
-                Console.WriteLine("Exception occured while trying to deserialize message");
+                Logger.Error(e, "Exception occured while trying to deserialize message.");
                 msg = default(TRead);
                 return false;
             }
@@ -264,7 +267,7 @@ namespace Grpc.Core.Internal
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured while invoking completion delegate: " + e);
+                Logger.Error(e, "Exception occured while invoking completion delegate.");
             }
         }
 
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
index 309067ea9d..513902ee36 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
@@ -48,6 +48,7 @@ namespace Grpc.Core.Internal
     internal class AsyncCallServer<TRequest, TResponse> : AsyncCallBase<TResponse, TRequest>
     {
         readonly TaskCompletionSource<object> finishedServersideTcs = new TaskCompletionSource<object>();
+        readonly CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
         readonly GrpcEnvironment environment;
 
         public AsyncCallServer(Func<TResponse, byte[]> serializer, Func<byte[], TRequest> deserializer, GrpcEnvironment environment) : base(serializer, deserializer)
@@ -101,20 +102,43 @@ namespace Grpc.Core.Internal
         /// Only one pending send action is allowed at any given time.
         /// completionDelegate is called when the operation finishes.
         /// </summary>
-        public void StartSendStatusFromServer(Status status, AsyncCompletionDelegate<object> completionDelegate)
+        public void StartSendStatusFromServer(Status status, Metadata trailers, AsyncCompletionDelegate<object> completionDelegate)
         {
             lock (myLock)
             {
                 Preconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
                 CheckSendingAllowed();
 
-                call.StartSendStatusFromServer(status, HandleHalfclosed);
+                using (var metadataArray = MetadataArraySafeHandle.Create(trailers))
+                {
+                    call.StartSendStatusFromServer(status, HandleHalfclosed, metadataArray);
+                }
                 halfcloseRequested = true;
                 readingDone = true;
                 sendCompletionDelegate = completionDelegate;
             }
         }
 
+        /// <summary>
+        /// Gets cancellation token that gets cancelled once close completion
+        /// is received and the cancelled flag is set.
+        /// </summary>
+        public CancellationToken CancellationToken
+        {
+            get
+            {
+                return cancellationTokenSource.Token;
+            }
+        }
+
+        public string Peer
+        {
+            get
+            {
+                return call.GetPeer();
+            }
+        }
+
         protected override void OnReleaseResources()
         {
             environment.DebugStats.ActiveServerCalls.Decrement();
@@ -135,6 +159,8 @@ namespace Grpc.Core.Internal
                 {
                     // Once we cancel, we don't have to care that much 
                     // about reads and writes.
+
+                    // TODO(jtattermusch): is this still necessary?
                     Cancel();
                 }
 
@@ -142,6 +168,11 @@ namespace Grpc.Core.Internal
             }
             // TODO(jtattermusch): handle error
 
+            if (cancelled)
+            {
+                cancellationTokenSource.Cancel();
+            }
+
             finishedServersideTcs.SetResult(null);
         }
     }
diff --git a/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
index 861cbbe4c6..6a2add54db 100644
--- a/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs
@@ -38,7 +38,6 @@ using Grpc.Core;
 namespace Grpc.Core.Internal
 {
     /// <summary>
-    /// Not owned version of 
     /// grpcsharp_batch_context
     /// </summary>
     internal class BatchContextSafeHandle : SafeHandleZeroIsInvalid
@@ -47,6 +46,9 @@ namespace Grpc.Core.Internal
         static extern BatchContextSafeHandle grpcsharp_batch_context_create();
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_batch_context_recv_initial_metadata(BatchContextSafeHandle ctx);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
 
         [DllImport("grpc_csharp_ext.dll")]
@@ -59,12 +61,24 @@ namespace Grpc.Core.Internal
         static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx);  // returns const char*
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_batch_context_recv_status_on_client_trailing_metadata(BatchContextSafeHandle ctx);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern CallSafeHandle grpcsharp_batch_context_server_rpc_new_call(BatchContextSafeHandle ctx);
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern IntPtr grpcsharp_batch_context_server_rpc_new_method(BatchContextSafeHandle ctx);  // returns const char*
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_batch_context_server_rpc_new_host(BatchContextSafeHandle ctx);  // returns const char*
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern Timespec grpcsharp_batch_context_server_rpc_new_deadline(BatchContextSafeHandle ctx);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_batch_context_server_rpc_new_request_metadata(BatchContextSafeHandle ctx);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
 
         [DllImport("grpc_csharp_ext.dll")]
@@ -87,13 +101,26 @@ namespace Grpc.Core.Internal
             }
         }
 
-        public Status GetReceivedStatus()
+        // Gets data of recv_initial_metadata completion.
+        public Metadata GetReceivedInitialMetadata()
+        {
+            IntPtr metadataArrayPtr = grpcsharp_batch_context_recv_initial_metadata(this);
+            return MetadataArraySafeHandle.ReadMetadataFromPtrUnsafe(metadataArrayPtr);
+        }
+            
+        // Gets data of recv_status_on_client completion.
+        public ClientSideStatus GetReceivedStatusOnClient()
         {
-            // TODO: can the native method return string directly?
             string details = Marshal.PtrToStringAnsi(grpcsharp_batch_context_recv_status_on_client_details(this));
-            return new Status(grpcsharp_batch_context_recv_status_on_client_status(this), details);
+            var status = new Status(grpcsharp_batch_context_recv_status_on_client_status(this), details);
+
+            IntPtr metadataArrayPtr = grpcsharp_batch_context_recv_status_on_client_trailing_metadata(this);
+            var metadata = MetadataArraySafeHandle.ReadMetadataFromPtrUnsafe(metadataArrayPtr);
+
+            return new ClientSideStatus(status, metadata);
         }
 
+        // Gets data of recv_message completion.
         public byte[] GetReceivedMessage()
         {
             IntPtr len = grpcsharp_batch_context_recv_message_length(this);
@@ -106,16 +133,22 @@ namespace Grpc.Core.Internal
             return data;
         }
 
-        public CallSafeHandle GetServerRpcNewCall()
+        // Gets data of server_rpc_new completion.
+        public ServerRpcNew GetServerRpcNew()
         {
-            return grpcsharp_batch_context_server_rpc_new_call(this);
-        }
+            var call = grpcsharp_batch_context_server_rpc_new_call(this);
 
-        public string GetServerRpcNewMethod()
-        {
-            return Marshal.PtrToStringAnsi(grpcsharp_batch_context_server_rpc_new_method(this));
+            var method = Marshal.PtrToStringAnsi(grpcsharp_batch_context_server_rpc_new_method(this));
+            var host = Marshal.PtrToStringAnsi(grpcsharp_batch_context_server_rpc_new_host(this));
+            var deadline = grpcsharp_batch_context_server_rpc_new_deadline(this);
+
+            IntPtr metadataArrayPtr = grpcsharp_batch_context_server_rpc_new_request_metadata(this);
+            var metadata = MetadataArraySafeHandle.ReadMetadataFromPtrUnsafe(metadataArrayPtr);
+
+            return new ServerRpcNew(call, method, host, deadline, metadata);
         }
 
+        // Gets data of receive_close_on_server completion.
         public bool GetReceivedCloseOnServerCancelled()
         {
             return grpcsharp_batch_context_recv_close_on_server_cancelled(this) != 0;
@@ -127,4 +160,97 @@ namespace Grpc.Core.Internal
             return true;
         }
     }
+
+    /// <summary>
+    /// Status + metadata received on client side when call finishes.
+    /// (when receive_status_on_client operation finishes).
+    /// </summary>
+    internal struct ClientSideStatus
+    {
+        readonly Status status;
+        readonly Metadata trailers;
+
+        public ClientSideStatus(Status status, Metadata trailers)
+        {
+            this.status = status;
+            this.trailers = trailers;
+        }
+
+        public Status Status
+        {
+            get
+            {
+                return this.status;
+            }    
+        }
+
+        public Metadata Trailers
+        {
+            get
+            {
+                return this.trailers;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Details of a newly received RPC.
+    /// </summary>
+    internal struct ServerRpcNew
+    {
+        readonly CallSafeHandle call;
+        readonly string method;
+        readonly string host;
+        readonly Timespec deadline;
+        readonly Metadata requestMetadata;
+
+        public ServerRpcNew(CallSafeHandle call, string method, string host, Timespec deadline, Metadata requestMetadata)
+        {
+            this.call = call;
+            this.method = method;
+            this.host = host;
+            this.deadline = deadline;
+            this.requestMetadata = requestMetadata;
+        }
+
+        public CallSafeHandle Call
+        {
+            get
+            {
+                return this.call;
+            }
+        }
+
+        public string Method
+        {
+            get
+            {
+                return this.method;
+            }
+        }
+
+        public string Host
+        {
+            get
+            {
+                return this.host;
+            }
+        }
+
+        public Timespec Deadline
+        {
+            get
+            {
+                return this.deadline;
+            }
+        }
+
+        public Metadata RequestMetadata
+        {
+            get
+            {
+                return this.requestMetadata;
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs
new file mode 100644
index 0000000000..92fbe8cf0f
--- /dev/null
+++ b/src/csharp/Grpc.Core/Internal/CStringSafeHandle.cs
@@ -0,0 +1,60 @@
+#region Copyright notice and license
+// 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.
+#endregion
+using System;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace Grpc.Core.Internal
+{
+    /// <summary>
+    /// Owned char* object.
+    /// </summary>
+    internal class CStringSafeHandle : SafeHandleZeroIsInvalid
+    {
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern void gprsharp_free(IntPtr ptr);
+
+        private CStringSafeHandle()
+        {
+        }
+
+        public string GetValue()
+        {
+            return Marshal.PtrToStringAnsi(handle);
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            gprsharp_free(handle);
+            return true;
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
index 3b246ac01b..714749b171 100644
--- a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
@@ -46,9 +46,6 @@ namespace Grpc.Core.Internal
         CompletionRegistry completionRegistry;
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
-
-        [DllImport("grpc_csharp_ext.dll")]
         static extern GRPCCallError grpcsharp_call_cancel(CallSafeHandle call);
 
         [DllImport("grpc_csharp_ext.dll")]
@@ -81,7 +78,7 @@ namespace Grpc.Core.Internal
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern GRPCCallError grpcsharp_call_send_status_from_server(CallSafeHandle call, 
-            BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage);
+            BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage, MetadataArraySafeHandle metadataArray);
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern GRPCCallError grpcsharp_call_recv_message(CallSafeHandle call,
@@ -92,19 +89,15 @@ namespace Grpc.Core.Internal
             BatchContextSafeHandle ctx);
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern CStringSafeHandle grpcsharp_call_get_peer(CallSafeHandle call);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_call_destroy(IntPtr call);
 
         private CallSafeHandle()
         {
         }
 
-        public static CallSafeHandle Create(ChannelSafeHandle channel, CompletionRegistry registry, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline)
-        {
-            var result = grpcsharp_channel_create_call(channel, cq, method, host, deadline);
-            result.SetCompletionRegistry(registry);
-            return result;
-        }
-
         public void SetCompletionRegistry(CompletionRegistry completionRegistry)
         {
             this.completionRegistry = completionRegistry;
@@ -159,11 +152,11 @@ namespace Grpc.Core.Internal
             grpcsharp_call_send_close_from_client(this, ctx).CheckOk();
         }
 
-        public void StartSendStatusFromServer(Status status, BatchCompletionDelegate callback)
+        public void StartSendStatusFromServer(Status status, BatchCompletionDelegate callback, MetadataArraySafeHandle metadataArray)
         {
             var ctx = BatchContextSafeHandle.Create();
             completionRegistry.RegisterBatchCompletion(ctx, callback);
-            grpcsharp_call_send_status_from_server(this, ctx, status.StatusCode, status.Detail).CheckOk();
+            grpcsharp_call_send_status_from_server(this, ctx, status.StatusCode, status.Detail, metadataArray).CheckOk();
         }
 
         public void StartReceiveMessage(BatchCompletionDelegate callback)
@@ -190,6 +183,14 @@ namespace Grpc.Core.Internal
             grpcsharp_call_cancel_with_status(this, status.StatusCode, status.Detail).CheckOk();
         }
 
+        public string GetPeer()
+        {
+            using (var cstring = grpcsharp_call_get_peer(this))
+            {
+                return cstring.GetValue();
+            }
+        }
+
         protected override bool ReleaseHandle()
         {
             grpcsharp_call_destroy(handle);
diff --git a/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs b/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
index f046f4c6d0..20815efbd3 100644
--- a/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ChannelSafeHandle.cs
@@ -41,21 +41,24 @@ namespace Grpc.Core.Internal
     internal class ChannelSafeHandle : SafeHandleZeroIsInvalid
     {
         [DllImport("grpc_csharp_ext.dll")]
-        static extern ChannelSafeHandle grpcsharp_channel_create(string target, ChannelArgsSafeHandle channelArgs);
+        static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs);
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern ChannelSafeHandle grpcsharp_secure_channel_create(CredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs);
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_channel_destroy(IntPtr channel);
 
         private ChannelSafeHandle()
         {
         }
 
-        public static ChannelSafeHandle Create(string target, ChannelArgsSafeHandle channelArgs)
+        public static ChannelSafeHandle CreateInsecure(string target, ChannelArgsSafeHandle channelArgs)
         {
-            return grpcsharp_channel_create(target, channelArgs);
+            return grpcsharp_insecure_channel_create(target, channelArgs);
         }
 
         public static ChannelSafeHandle CreateSecure(CredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs)
@@ -63,6 +66,13 @@ namespace Grpc.Core.Internal
             return grpcsharp_secure_channel_create(credentials, target, channelArgs);
         }
 
+        public CallSafeHandle CreateCall(CompletionRegistry registry, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline)
+        {
+            var result = grpcsharp_channel_create_call(this, cq, method, host, deadline);
+            result.SetCompletionRegistry(registry);
+            return result;
+        }
+
         protected override bool ReleaseHandle()
         {
             grpcsharp_channel_destroy(handle);
diff --git a/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs b/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs
index f6d8aa0600..2796c959a3 100644
--- a/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs
+++ b/src/csharp/Grpc.Core/Internal/CompletionRegistry.cs
@@ -35,6 +35,7 @@ using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core.Internal
@@ -45,6 +46,8 @@ namespace Grpc.Core.Internal
 
     internal class CompletionRegistry
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<CompletionRegistry>();
+
         readonly GrpcEnvironment environment;
         readonly ConcurrentDictionary<IntPtr, OpCompletionDelegate> dict = new ConcurrentDictionary<IntPtr, OpCompletionDelegate>();
 
@@ -81,7 +84,7 @@ namespace Grpc.Core.Internal
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured while invoking completion delegate: " + e);
+                Logger.Error(e, "Exception occured while invoking completion delegate.");
             }
             finally
             {
diff --git a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
index f361199068..8b4fa85e5d 100644
--- a/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CredentialsSafeHandle.cs
@@ -50,9 +50,23 @@ namespace Grpc.Core.Internal
         {
         }
 
-        public static CredentialsSafeHandle CreateSslCredentials(string pemRootCerts)
+        public static CredentialsSafeHandle CreateNullCredentials()
         {
-            return grpcsharp_ssl_credentials_create(pemRootCerts, null, null);
+            var creds = new CredentialsSafeHandle();
+            creds.SetHandle(IntPtr.Zero);
+            return creds;
+        }
+
+        public static CredentialsSafeHandle CreateSslCredentials(string pemRootCerts, KeyCertificatePair keyCertPair)
+        {
+            if (keyCertPair != null)
+            {
+                return grpcsharp_ssl_credentials_create(pemRootCerts, keyCertPair.CertificateChain, keyCertPair.PrivateKey);
+            }
+            else
+            {
+                return grpcsharp_ssl_credentials_create(pemRootCerts, null, null);
+            }
         }
 
         protected override bool ReleaseHandle()
diff --git a/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs b/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
index b77e893044..cb4c7c821e 100644
--- a/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
+++ b/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
@@ -36,7 +36,7 @@ using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 
 namespace Grpc.Core.Internal
 {
@@ -45,6 +45,8 @@ namespace Grpc.Core.Internal
     /// </summary>
     internal class GrpcThreadPool
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<GrpcThreadPool>();
+
         readonly GrpcEnvironment environment;
         readonly object myLock = new object();
         readonly List<Thread> threads = new List<Thread>();
@@ -82,7 +84,7 @@ namespace Grpc.Core.Internal
             {
                 cq.Shutdown();
 
-                Console.WriteLine("Waiting for GRPC threads to finish.");
+                Logger.Info("Waiting for GRPC threads to finish.");
                 foreach (var thread in threads)
                 {
                     thread.Join();
@@ -129,12 +131,12 @@ namespace Grpc.Core.Internal
                     }
                     catch (Exception e)
                     {
-                        Console.WriteLine("Exception occured while invoking completion delegate: " + e);
+                        Logger.Error(e, "Exception occured while invoking completion delegate");
                     }
                 }
             }
             while (ev.type != GRPCCompletionType.Shutdown);
-            Console.WriteLine("Completion queue has shutdown successfully, thread " + Thread.CurrentThread.Name + " exiting.");
+            Logger.Info("Completion queue has shutdown successfully, thread {0} exiting.", Thread.CurrentThread.Name);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs b/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
index 80aa7f5603..427c16fac6 100644
--- a/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/MetadataArraySafeHandle.cs
@@ -46,12 +46,24 @@ namespace Grpc.Core.Internal
         static extern void grpcsharp_metadata_array_add(MetadataArraySafeHandle array, string key, byte[] value, UIntPtr valueLength);
 
         [DllImport("grpc_csharp_ext.dll")]
+        static extern UIntPtr grpcsharp_metadata_array_count(IntPtr metadataArray);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_metadata_array_get_key(IntPtr metadataArray, UIntPtr index);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern IntPtr grpcsharp_metadata_array_get_value(IntPtr metadataArray, UIntPtr index);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern UIntPtr grpcsharp_metadata_array_get_value_length(IntPtr metadataArray, UIntPtr index);
+
+        [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_metadata_array_destroy_full(IntPtr array);
 
         private MetadataArraySafeHandle()
         {
         }
-
+            
         public static MetadataArraySafeHandle Create(Metadata metadata)
         {
             // TODO(jtattermusch): we might wanna check that the metadata is readonly 
@@ -63,6 +75,38 @@ namespace Grpc.Core.Internal
             return metadataArray;
         }
 
+        /// <summary>
+        /// Reads metadata from pointer to grpc_metadata_array
+        /// </summary>
+        public static Metadata ReadMetadataFromPtrUnsafe(IntPtr metadataArray)
+        {
+            if (metadataArray == IntPtr.Zero)
+            {
+                return null;
+            }
+
+            ulong count = grpcsharp_metadata_array_count(metadataArray).ToUInt64();
+
+            var metadata = new Metadata();
+            for (ulong i = 0; i < count; i++)
+            {
+                var index = new UIntPtr(i);
+                string key = Marshal.PtrToStringAnsi(grpcsharp_metadata_array_get_key(metadataArray, index));
+                var bytes = new byte[grpcsharp_metadata_array_get_value_length(metadataArray, index).ToUInt64()];
+                Marshal.Copy(grpcsharp_metadata_array_get_value(metadataArray, index), bytes, 0, bytes.Length);
+                metadata.Add(new Metadata.Entry(key, bytes));
+            }
+            return metadata;
+        }
+
+        internal IntPtr Handle
+        {
+            get
+            {
+                return handle;
+            }
+        }
+
         protected override bool ReleaseHandle()
         {
             grpcsharp_metadata_array_destroy_full(handle);
diff --git a/src/csharp/Grpc.Core/Internal/GrpcLog.cs b/src/csharp/Grpc.Core/Internal/NativeLogRedirector.cs
index 2f3c8ad71c..b8a55c5fe8 100644
--- a/src/csharp/Grpc.Core/Internal/GrpcLog.cs
+++ b/src/csharp/Grpc.Core/Internal/NativeLogRedirector.cs
@@ -44,30 +44,26 @@ namespace Grpc.Core.Internal
 
     /// <summary>
     /// Logs from gRPC C core library can get lost if your application is not a console app.
-    /// This class allows redirection of logs to arbitrary destination.
+    /// This class allows redirection of logs to gRPC logger.
     /// </summary>
-    internal static class GrpcLog
+    internal static class NativeLogRedirector
     {
         static object staticLock = new object();
         static GprLogDelegate writeCallback;
-        static TextWriter dest;
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern void grpcsharp_redirect_log(GprLogDelegate callback);
 
         /// <summary>
-        /// Sets text writer as destination for logs from native gRPC C core library.
-        /// Only first invocation has effect.
+        /// Redirects logs from native gRPC C core library to a general logger.
         /// </summary>
-        /// <param name="textWriter"></param>
-        public static void RedirectNativeLogs(TextWriter textWriter)
+        public static void Redirect()
         {
             lock (staticLock)
             {
                 if (writeCallback == null)
                 {
                     writeCallback = new GprLogDelegate(HandleWrite);
-                    dest = textWriter;
                     grpcsharp_redirect_log(writeCallback);    
                 }
             }
@@ -77,13 +73,30 @@ namespace Grpc.Core.Internal
         {
             try
             {
-                // TODO: DateTime format used here is different than in C core.
-                dest.WriteLine(string.Format("{0}{1} {2} {3}:{4}: {5}", 
-                    Marshal.PtrToStringAnsi(severityStringPtr), DateTime.Now,  
+                var logger = GrpcEnvironment.Logger;
+                string severityString = Marshal.PtrToStringAnsi(severityStringPtr);
+                string message = string.Format("{0} {1}:{2}: {3}",
                     threadId,
                     Marshal.PtrToStringAnsi(fileStringPtr), 
                     line, 
-                    Marshal.PtrToStringAnsi(msgPtr)));
+                    Marshal.PtrToStringAnsi(msgPtr));
+                
+                switch (severityString)
+                {
+                    case "D":
+                        logger.Debug(message);
+                        break;
+                    case "I":
+                        logger.Info(message);
+                        break;
+                    case "E":
+                        logger.Error(message);
+                        break;
+                    default:
+                        // severity not recognized, default to error.
+                        logger.Error(message);
+                        break;
+                }
             }
             catch (Exception e)
             {
diff --git a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
index 594e46b159..19f0e3c57f 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
@@ -34,21 +34,25 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core.Internal
 {
     internal interface IServerCallHandler
     {
-        Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment);
+        Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment);
     }
 
     internal class UnaryServerCallHandler<TRequest, TResponse> : IServerCallHandler
         where TRequest : class
         where TResponse : class
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<UnaryServerCallHandler<TRequest, TResponse>>();
+
         readonly Method<TRequest, TResponse> method;
         readonly UnaryServerMethod<TRequest, TResponse> handler;
 
@@ -58,37 +62,38 @@ namespace Grpc.Core.Internal
             this.handler = handler;
         }
 
-        public async Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment)
+        public async Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment)
         {
             var asyncCall = new AsyncCallServer<TRequest, TResponse>(
                 method.ResponseMarshaller.Serializer,
                 method.RequestMarshaller.Deserializer,
                 environment);
 
-            asyncCall.Initialize(call);
+            asyncCall.Initialize(newRpc.Call);
             var finishedTask = asyncCall.ServerSideCallAsync();
             var requestStream = new ServerRequestStream<TRequest, TResponse>(asyncCall);
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
-            Status status = Status.DefaultSuccess;
+            Status status;
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 Preconditions.CheckArgument(await requestStream.MoveNext());
                 var request = requestStream.Current;
                 // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
                 Preconditions.CheckArgument(!await requestStream.MoveNext());
-                var context = new ServerCallContext();  // TODO(jtattermusch): initialize the context
-                var result = await handler(context, request);
+                var result = await handler(request, context);
+                status = context.Status;
                 await responseStream.WriteAsync(result);
             } 
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured in handler: " + e);
+                Logger.Error(e, "Exception occured in handler.");
                 status = HandlerUtils.StatusFromException(e);
             }
             try
             {
-                await responseStream.WriteStatusAsync(status);
+                await responseStream.WriteStatusAsync(status, context.ResponseTrailers);
             }
             catch (OperationCanceledException)
             {
@@ -102,6 +107,8 @@ namespace Grpc.Core.Internal
         where TRequest : class
         where TResponse : class
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<ServerStreamingServerCallHandler<TRequest, TResponse>>();
+
         readonly Method<TRequest, TResponse> method;
         readonly ServerStreamingServerMethod<TRequest, TResponse> handler;
 
@@ -111,38 +118,38 @@ namespace Grpc.Core.Internal
             this.handler = handler;
         }
 
-        public async Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment)
+        public async Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment)
         {
             var asyncCall = new AsyncCallServer<TRequest, TResponse>(
                 method.ResponseMarshaller.Serializer,
                 method.RequestMarshaller.Deserializer,
                 environment);
 
-            asyncCall.Initialize(call);
+            asyncCall.Initialize(newRpc.Call);
             var finishedTask = asyncCall.ServerSideCallAsync();
             var requestStream = new ServerRequestStream<TRequest, TResponse>(asyncCall);
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
 
-            Status status = Status.DefaultSuccess;
+            Status status;
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
                 Preconditions.CheckArgument(await requestStream.MoveNext());
                 var request = requestStream.Current;
                 // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
                 Preconditions.CheckArgument(!await requestStream.MoveNext());
-
-                var context = new ServerCallContext();  // TODO(jtattermusch): initialize the context
-                await handler(context, request, responseStream);
+                await handler(request, responseStream, context);
+                status = context.Status;
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured in handler: " + e);
+                Logger.Error(e, "Exception occured in handler.");
                 status = HandlerUtils.StatusFromException(e);
             }
 
             try
             {
-                await responseStream.WriteStatusAsync(status);
+                await responseStream.WriteStatusAsync(status, context.ResponseTrailers);
             }
             catch (OperationCanceledException)
             {
@@ -156,6 +163,8 @@ namespace Grpc.Core.Internal
         where TRequest : class
         where TResponse : class
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<ClientStreamingServerCallHandler<TRequest, TResponse>>();
+
         readonly Method<TRequest, TResponse> method;
         readonly ClientStreamingServerMethod<TRequest, TResponse> handler;
 
@@ -165,23 +174,24 @@ namespace Grpc.Core.Internal
             this.handler = handler;
         }
 
-        public async Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment)
+        public async Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment)
         {
             var asyncCall = new AsyncCallServer<TRequest, TResponse>(
                 method.ResponseMarshaller.Serializer,
                 method.RequestMarshaller.Deserializer,
                 environment);
 
-            asyncCall.Initialize(call);
+            asyncCall.Initialize(newRpc.Call);
             var finishedTask = asyncCall.ServerSideCallAsync();
             var requestStream = new ServerRequestStream<TRequest, TResponse>(asyncCall);
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
-            var context = new ServerCallContext();  // TODO(jtattermusch): initialize the context
 
-            Status status = Status.DefaultSuccess;
+            Status status;
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
-                var result = await handler(context, requestStream);
+                var result = await handler(requestStream, context);
+                status = context.Status;
                 try
                 {
                     await responseStream.WriteAsync(result);
@@ -193,13 +203,13 @@ namespace Grpc.Core.Internal
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured in handler: " + e);
+                Logger.Error(e, "Exception occured in handler.");
                 status = HandlerUtils.StatusFromException(e);
             }
 
             try
             {
-                await responseStream.WriteStatusAsync(status);
+                await responseStream.WriteStatusAsync(status, context.ResponseTrailers);
             }
             catch (OperationCanceledException)
             {
@@ -213,6 +223,8 @@ namespace Grpc.Core.Internal
         where TRequest : class
         where TResponse : class
     {
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<DuplexStreamingServerCallHandler<TRequest, TResponse>>();
+
         readonly Method<TRequest, TResponse> method;
         readonly DuplexStreamingServerMethod<TRequest, TResponse> handler;
 
@@ -222,32 +234,33 @@ namespace Grpc.Core.Internal
             this.handler = handler;
         }
 
-        public async Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment)
+        public async Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment)
         {
             var asyncCall = new AsyncCallServer<TRequest, TResponse>(
                 method.ResponseMarshaller.Serializer,
                 method.RequestMarshaller.Deserializer,
                 environment);
 
-            asyncCall.Initialize(call);
+            asyncCall.Initialize(newRpc.Call);
             var finishedTask = asyncCall.ServerSideCallAsync();
             var requestStream = new ServerRequestStream<TRequest, TResponse>(asyncCall);
             var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
-            var context = new ServerCallContext();  // TODO(jtattermusch): initialize the context
 
-            Status status = Status.DefaultSuccess;
+            Status status;
+            var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, asyncCall.CancellationToken);
             try
             {
-                await handler(context, requestStream, responseStream);
+                await handler(requestStream, responseStream, context);
+                status = context.Status;
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception occured in handler: " + e);
+                Logger.Error(e, "Exception occured in handler.");
                 status = HandlerUtils.StatusFromException(e);
             }
             try
             {
-                await responseStream.WriteStatusAsync(status);
+                await responseStream.WriteStatusAsync(status, context.ResponseTrailers);
             }
             catch (OperationCanceledException)
             {
@@ -259,18 +272,19 @@ namespace Grpc.Core.Internal
 
     internal class NoSuchMethodCallHandler : IServerCallHandler
     {
-        public async Task HandleCall(string methodName, CallSafeHandle call, GrpcEnvironment environment)
+        public static readonly NoSuchMethodCallHandler Instance = new NoSuchMethodCallHandler();
+
+        public async Task HandleCall(ServerRpcNew newRpc, GrpcEnvironment environment)
         {
             // We don't care about the payload type here.
             var asyncCall = new AsyncCallServer<byte[], byte[]>(
                 (payload) => payload, (payload) => payload, environment);
             
-            asyncCall.Initialize(call);
+            asyncCall.Initialize(newRpc.Call);
             var finishedTask = asyncCall.ServerSideCallAsync();
-            var requestStream = new ServerRequestStream<byte[], byte[]>(asyncCall);
             var responseStream = new ServerResponseStream<byte[], byte[]>(asyncCall);
 
-            await responseStream.WriteStatusAsync(new Status(StatusCode.Unimplemented, "No such method."));
+            await responseStream.WriteStatusAsync(new Status(StatusCode.Unimplemented, "No such method."), Metadata.Empty);
             await finishedTask;
         }
     }
@@ -279,8 +293,24 @@ namespace Grpc.Core.Internal
     {
         public static Status StatusFromException(Exception e)
         {
+            var rpcException = e as RpcException;
+            if (rpcException != null)
+            {
+                // use the status thrown by handler.
+                return rpcException.Status;
+            }
+
             // TODO(jtattermusch): what is the right status code here?
             return new Status(StatusCode.Unknown, "Exception was thrown by handler.");
         }
+
+        public static ServerCallContext NewContext(ServerRpcNew newRpc, string peer, CancellationToken cancellationToken)
+        {
+            DateTime realtimeDeadline = newRpc.Deadline.ToClockType(GPRClockType.Realtime).ToDateTime();
+
+            return new ServerCallContext(
+                newRpc.Method, newRpc.Host, peer, realtimeDeadline,
+                newRpc.RequestMetadata, cancellationToken);
+        }
     }
 }
diff --git a/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs b/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
index 961180741a..59238a452c 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCredentialsSafeHandle.cs
@@ -51,10 +51,10 @@ namespace Grpc.Core.Internal
         {
         }
 
-        public static ServerCredentialsSafeHandle CreateSslCredentials(string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray)
+        public static ServerCredentialsSafeHandle CreateSslCredentials(string pemRootCerts, string[] keyCertPairCertChainArray, string[] keyCertPairPrivateKeyArray)
         {
             Preconditions.CheckArgument(keyCertPairCertChainArray.Length == keyCertPairPrivateKeyArray.Length);
-            return grpcsharp_ssl_server_credentials_create(null,
+            return grpcsharp_ssl_server_credentials_create(pemRootCerts,
                                                            keyCertPairCertChainArray, keyCertPairPrivateKeyArray,
                                                            new UIntPtr((ulong)keyCertPairCertChainArray.Length));
         }
diff --git a/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs b/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
index a2d77dd5b7..756dcee87f 100644
--- a/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
@@ -56,10 +56,10 @@ namespace Grpc.Core.Internal
             return taskSource.Task;
         }
 
-        public Task WriteStatusAsync(Status status)
+        public Task WriteStatusAsync(Status status, Metadata trailers)
         {
             var taskSource = new AsyncCompletionTaskSource<object>();
-            call.StartSendStatusFromServer(status, taskSource.CompletionDelegate);
+            call.StartSendStatusFromServer(status, trailers, taskSource.CompletionDelegate);
             return taskSource.Task;
         }
     }
diff --git a/src/csharp/Grpc.Core/Internal/ServerSafeHandle.cs b/src/csharp/Grpc.Core/Internal/ServerSafeHandle.cs
index 9e1170e6dd..f9b44b1acf 100644
--- a/src/csharp/Grpc.Core/Internal/ServerSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerSafeHandle.cs
@@ -48,7 +48,7 @@ namespace Grpc.Core.Internal
         static extern ServerSafeHandle grpcsharp_server_create(CompletionQueueSafeHandle cq, ChannelArgsSafeHandle args);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern int grpcsharp_server_add_http2_port(ServerSafeHandle server, string addr);
+        static extern int grpcsharp_server_add_insecure_http2_port(ServerSafeHandle server, string addr);
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern int grpcsharp_server_add_secure_http2_port(ServerSafeHandle server, string addr, ServerCredentialsSafeHandle creds);
@@ -77,12 +77,12 @@ namespace Grpc.Core.Internal
             return grpcsharp_server_create(cq, args);
         }
 
-        public int AddListeningPort(string addr)
+        public int AddInsecurePort(string addr)
         {
-            return grpcsharp_server_add_http2_port(this, addr);
+            return grpcsharp_server_add_insecure_http2_port(this, addr);
         }
 
-        public int AddListeningPort(string addr, ServerCredentialsSafeHandle credentials)
+        public int AddSecurePort(string addr, ServerCredentialsSafeHandle credentials)
         {
             return grpcsharp_server_add_secure_http2_port(this, addr, credentials);
         }
diff --git a/src/csharp/Grpc.Core/Internal/Timespec.cs b/src/csharp/Grpc.Core/Internal/Timespec.cs
index de783f5a4b..e83d21f4a4 100644
--- a/src/csharp/Grpc.Core/Internal/Timespec.cs
+++ b/src/csharp/Grpc.Core/Internal/Timespec.cs
@@ -32,6 +32,8 @@ using System;
 using System.Runtime.InteropServices;
 using System.Threading;
 
+using Grpc.Core.Utils;
+
 namespace Grpc.Core.Internal
 {
     /// <summary>
@@ -40,23 +42,43 @@ namespace Grpc.Core.Internal
     [StructLayout(LayoutKind.Sequential)]
     internal struct Timespec
     {
-        const int NanosPerSecond = 1000 * 1000 * 1000;
-        const int NanosPerTick = 100;
+        const long NanosPerSecond = 1000 * 1000 * 1000;
+        const long NanosPerTick = 100;
+        const long TicksPerSecond = NanosPerSecond / NanosPerTick;
+
+        static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern Timespec gprsharp_now();
+        static extern Timespec gprsharp_now(GPRClockType clockType);
 
         [DllImport("grpc_csharp_ext.dll")]
-        static extern Timespec gprsharp_inf_future();
+        static extern Timespec gprsharp_inf_future(GPRClockType clockType);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern Timespec gprsharp_inf_past(GPRClockType clockType);
+
+        [DllImport("grpc_csharp_ext.dll")]
+        static extern Timespec gprsharp_convert_clock_type(Timespec t, GPRClockType targetClock);
 
         [DllImport("grpc_csharp_ext.dll")]
         static extern int gprsharp_sizeof_timespec();
 
+        public Timespec(IntPtr tv_sec, int tv_nsec) : this(tv_sec, tv_nsec, GPRClockType.Realtime)
+        {
+        }
+
+        public Timespec(IntPtr tv_sec, int tv_nsec, GPRClockType clock_type)
+        {
+            this.tv_sec = tv_sec;
+            this.tv_nsec = tv_nsec;
+            this.clock_type = clock_type;
+        }
+
         // 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 int tv_nsec;
-        public GPRClockType clock_type;
+        private System.IntPtr tv_sec;
+        private int tv_nsec;
+        private GPRClockType clock_type;
 
         /// <summary>
         /// Timespec a long time in the future.
@@ -65,49 +87,164 @@ namespace Grpc.Core.Internal
         {
             get
             {
-                return gprsharp_inf_future();
+                return gprsharp_inf_future(GPRClockType.Realtime);
+            }
+        }
+
+        /// <summary>
+        /// Timespec a long time in the past.
+        /// </summary>
+        public static Timespec InfPast
+        {
+            get
+            {
+                return gprsharp_inf_past(GPRClockType.Realtime);
             }
         }
 
+        /// <summary>
+        /// Return Timespec representing the current time.
+        /// </summary>
         public static Timespec Now
         {
             get
             {
-                return gprsharp_now();
+                return gprsharp_now(GPRClockType.Realtime);
             }
         }
 
-        internal static int NativeSize
+        /// <summary>
+        /// Seconds since unix epoch.
+        /// </summary>
+        public IntPtr TimevalSeconds
         {
             get
             {
-                return gprsharp_sizeof_timespec();
+                return tv_sec;
+            }
+        }
+
+        /// <summary>
+        /// The nanoseconds part of timeval.
+        /// </summary>
+        public int TimevalNanos
+        {
+            get
+            {
+                return tv_nsec;
             }
         }
 
         /// <summary>
-        /// Creates a GPR deadline from current instant and given timeout.
+        /// Converts the timespec to desired clock type.
+        /// </summary>
+        public Timespec ToClockType(GPRClockType targetClock)
+        {
+            return gprsharp_convert_clock_type(this, targetClock);
+        }
+            
+        /// <summary>
+        /// Converts Timespec to DateTime.
+        /// Timespec needs to be of type GPRClockType.Realtime and needs to represent a legal value.
+        /// DateTime has lower resolution (100ns), so rounding can occurs.
+        /// Value are always rounded up to the nearest DateTime value in the future.
+        /// 
+        /// For Timespec.InfFuture or if timespec is after the largest representable DateTime, DateTime.MaxValue is returned.
+        /// For Timespec.InfPast or if timespec is before the lowest representable DateTime, DateTime.MinValue is returned.
+        /// 
+        /// Unless DateTime.MaxValue or DateTime.MinValue is returned, the resulting DateTime is always in UTC
+        /// (DateTimeKind.Utc)
+        /// </summary>
+        public DateTime ToDateTime()
+        {
+            Preconditions.CheckState(tv_nsec >= 0 && tv_nsec < NanosPerSecond);
+            Preconditions.CheckState(clock_type == GPRClockType.Realtime);
+
+            // fast path for InfFuture
+            if (this.Equals(InfFuture))
+            {
+                return DateTime.MaxValue;
+            }
+
+            // fast path for InfPast
+            if (this.Equals(InfPast))
+            {
+                return DateTime.MinValue;
+            }
+
+            try
+            {
+                // convert nanos to ticks, round up to the nearest tick
+                long ticksFromNanos = tv_nsec / NanosPerTick + ((tv_nsec % NanosPerTick != 0) ? 1 : 0);
+                long ticksTotal = checked(tv_sec.ToInt64() * TicksPerSecond + ticksFromNanos);
+                return UnixEpoch.AddTicks(ticksTotal);
+            }
+            catch (OverflowException)
+            {
+                // ticks out of long range
+                return tv_sec.ToInt64() > 0 ? DateTime.MaxValue : DateTime.MinValue;
+            }
+            catch (ArgumentOutOfRangeException)
+            {
+                // resulting date time would be larger than MaxValue
+                return tv_sec.ToInt64() > 0 ? DateTime.MaxValue : DateTime.MinValue;
+            }
+        }
+            
+        /// <summary>
+        /// Creates DateTime to Timespec.
+        /// DateTime has to be in UTC (DateTimeKind.Utc) unless it's DateTime.MaxValue or DateTime.MinValue.
+        /// For DateTime.MaxValue of date time after the largest representable Timespec, Timespec.InfFuture is returned.
+        /// For DateTime.MinValue of date time before the lowest representable Timespec, Timespec.InfPast is returned.
         /// </summary>
-        /// <returns>The from timeout.</returns>
-        public static Timespec DeadlineFromTimeout(TimeSpan timeout)
+        /// <returns>The date time.</returns>
+        /// <param name="dateTime">Date time.</param>
+        public static Timespec FromDateTime(DateTime dateTime)
         {
-            if (timeout == Timeout.InfiniteTimeSpan)
+            if (dateTime == DateTime.MaxValue)
             {
                 return Timespec.InfFuture;
             }
-            return Timespec.Now.Add(timeout);
+
+            if (dateTime == DateTime.MinValue)
+            {
+                return Timespec.InfPast;
+            }
+
+            Preconditions.CheckArgument(dateTime.Kind == DateTimeKind.Utc, "dateTime");
+
+            try
+            {
+                TimeSpan timeSpan = dateTime - UnixEpoch;
+                long ticks = timeSpan.Ticks;
+
+                long seconds = ticks / TicksPerSecond;  
+                int nanos = (int)((ticks % TicksPerSecond) * NanosPerTick);
+                if (nanos < 0) 
+                {
+                    // correct the result based on C# modulo semantics for negative dividend
+                    seconds--;
+                    nanos += (int)NanosPerSecond;
+                }
+                // new IntPtr possibly throws OverflowException
+                return new Timespec(new IntPtr(seconds), nanos);
+            }
+            catch (OverflowException)
+            {
+                return dateTime > UnixEpoch ? Timespec.InfFuture : Timespec.InfPast;
+            }
+            catch (ArgumentOutOfRangeException)
+            {
+                return dateTime > UnixEpoch ? Timespec.InfFuture : Timespec.InfPast;
+            }
         }
 
-        public Timespec Add(TimeSpan timeSpan)
+        internal static int NativeSize
         {
-            long nanos = (long)tv_nsec + (timeSpan.Ticks % TimeSpan.TicksPerSecond) * NanosPerTick;
-            long overflow_sec = (nanos > NanosPerSecond) ? 1 : 0;
-
-            Timespec result;
-            result.tv_nsec = (int)(nanos % NanosPerSecond);
-            result.tv_sec = new IntPtr(tv_sec.ToInt64() + (timeSpan.Ticks / TimeSpan.TicksPerSecond) + overflow_sec);
-            result.clock_type = GPRClockType.Realtime;
-            return result;
+            get
+            {
+                return gprsharp_sizeof_timespec();
+            }
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/KeyCertificatePair.cs b/src/csharp/Grpc.Core/KeyCertificatePair.cs
new file mode 100644
index 0000000000..7cea18618e
--- /dev/null
+++ b/src/csharp/Grpc.Core/KeyCertificatePair.cs
@@ -0,0 +1,84 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Key certificate pair (in PEM encoding).
+    /// </summary>
+    public sealed class KeyCertificatePair
+    {
+        readonly string certificateChain;
+        readonly string privateKey;
+
+        /// <summary>
+        /// Creates a new certificate chain - private key pair.
+        /// </summary>
+        /// <param name="certificateChain">PEM encoded certificate chain.</param>
+        /// <param name="privateKey">PEM encoded private key.</param>
+        public KeyCertificatePair(string certificateChain, string privateKey)
+        {
+            this.certificateChain = Preconditions.CheckNotNull(certificateChain);
+            this.privateKey = Preconditions.CheckNotNull(privateKey);
+        }
+
+        /// <summary>
+        /// PEM encoded certificate chain.
+        /// </summary>
+        public string CertificateChain
+        {
+            get
+            {
+                return certificateChain;
+            }
+        }
+
+        /// <summary>
+        /// PEM encoded private key.
+        /// </summary>
+        public string PrivateKey
+        {
+            get
+            {
+                return privateKey;
+            }
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/Logging/ConsoleLogger.cs b/src/csharp/Grpc.Core/Logging/ConsoleLogger.cs
new file mode 100644
index 0000000000..c67765c78d
--- /dev/null
+++ b/src/csharp/Grpc.Core/Logging/ConsoleLogger.cs
@@ -0,0 +1,103 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+
+namespace Grpc.Core.Logging
+{
+    /// <summary>Logger that logs to System.Console.</summary>
+    public class ConsoleLogger : ILogger
+    {
+        readonly Type forType;
+        readonly string forTypeString;
+
+        public ConsoleLogger() : this(null)
+        {
+        }
+
+        private ConsoleLogger(Type forType)
+        {
+            this.forType = forType;
+            this.forTypeString = forType != null ? forType.FullName + " " : "";
+        }
+
+        public ILogger ForType<T>()
+        {
+            if (typeof(T) == forType)
+            {
+                return this;
+            }
+            return new ConsoleLogger(typeof(T));
+        }
+
+        public void Debug(string message, params object[] formatArgs)
+        {
+            Log("D", message, formatArgs);
+        }
+
+        public void Info(string message, params object[] formatArgs)
+        {
+            Log("I", message, formatArgs);
+        }
+
+        public void Warning(string message, params object[] formatArgs)
+        {
+            Log("W", message, formatArgs);
+        }
+
+        public void Warning(Exception exception, string message, params object[] formatArgs)
+        {
+            Log("W", message + " " + exception, formatArgs);
+        }
+
+        public void Error(string message, params object[] formatArgs)
+        {
+            Log("E", message, formatArgs);
+        }
+
+        public void Error(Exception exception, string message, params object[] formatArgs)
+        {
+            Log("E", message + " " + exception, formatArgs);
+        }
+
+        private void Log(string severityString, string message, object[] formatArgs)
+        {
+            Console.Error.WriteLine("{0}{1} {2}{3}",
+                severityString,
+                DateTime.Now,
+                forTypeString,
+                string.Format(message, formatArgs));
+        }
+    }
+}
diff --git a/src/csharp/Grpc.Core/Logging/ILogger.cs b/src/csharp/Grpc.Core/Logging/ILogger.cs
new file mode 100644
index 0000000000..0d58f133e3
--- /dev/null
+++ b/src/csharp/Grpc.Core/Logging/ILogger.cs
@@ -0,0 +1,57 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+
+namespace Grpc.Core.Logging
+{
+    /// <summary>For logging messages.</summary>
+    public interface ILogger
+    {
+        /// <summary>Returns a logger associated with the specified type.</summary>
+        ILogger ForType<T>();
+
+        void Debug(string message, params object[] formatArgs);
+
+        void Info(string message, params object[] formatArgs);
+
+        void Warning(string message, params object[] formatArgs);
+
+        void Warning(Exception exception, string message, params object[] formatArgs);
+
+        void Error(string message, params object[] formatArgs);
+
+        void Error(Exception exception, string message, params object[] formatArgs);
+    }
+}
diff --git a/src/csharp/Grpc.Core/Metadata.cs b/src/csharp/Grpc.Core/Metadata.cs
index 4552d39d88..2f308cbb11 100644
--- a/src/csharp/Grpc.Core/Metadata.cs
+++ b/src/csharp/Grpc.Core/Metadata.cs
@@ -220,6 +220,11 @@ namespace Grpc.Core
                     return value;
                 }
             }
+                
+            public override string ToString()
+            {
+                return string.Format("[Entry: key={0}, value={1}]", Key, Value);
+            }
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Server.cs b/src/csharp/Grpc.Core/Server.cs
index cbf77196cf..3217547cc4 100644
--- a/src/csharp/Grpc.Core/Server.cs
+++ b/src/csharp/Grpc.Core/Server.cs
@@ -38,6 +38,7 @@ using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Grpc.Core.Internal;
+using Grpc.Core.Logging;
 using Grpc.Core.Utils;
 
 namespace Grpc.Core
@@ -52,7 +53,10 @@ namespace Grpc.Core
         /// </summary>
         public const int PickUnusedPort = 0;
 
+        static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<Server>();
+
         readonly GrpcEnvironment environment;
+        readonly List<ChannelOption> options;
         readonly ServerSafeHandle handle;
         readonly object myLock = new object();
 
@@ -69,7 +73,8 @@ namespace Grpc.Core
         public Server(IEnumerable<ChannelOption> options = null)
         {
             this.environment = GrpcEnvironment.GetInstance();
-            using (var channelArgs = ChannelOptions.CreateChannelArgs(options))
+            this.options = options != null ? new List<ChannelOption>(options) : new List<ChannelOption>();
+            using (var channelArgs = ChannelOptions.CreateChannelArgs(this.options))
             {
                 this.handle = ServerSafeHandle.NewServer(environment.CompletionQueue, channelArgs);
             }
@@ -93,28 +98,31 @@ namespace Grpc.Core
         }
 
         /// <summary>
-        /// Add a non-secure port on which server should listen.
-        /// Only call this before Start().
-        /// </summary>
-        /// <returns>The port on which server will be listening.</returns>
-        /// <param name="host">the host</param>
-        /// <param name="port">the port. If zero, an unused port is chosen automatically.</param>
-        public int AddListeningPort(string host, int port)
-        {
-            return AddListeningPortInternal(host, port, null);
-        }
-
-        /// <summary>
-        /// Add a non-secure port on which server should listen.
+        /// Add a port on which server should listen.
         /// Only call this before Start().
         /// </summary>
         /// <returns>The port on which server will be listening.</returns>
         /// <param name="host">the host</param>
         /// <param name="port">the port. If zero, an unused port is chosen automatically.</param>
-        public int AddListeningPort(string host, int port, ServerCredentials credentials)
+        public int AddPort(string host, int port, ServerCredentials credentials)
         {
-            Preconditions.CheckNotNull(credentials);
-            return AddListeningPortInternal(host, port, credentials);
+            lock (myLock)
+            {
+                Preconditions.CheckNotNull(credentials);
+                Preconditions.CheckState(!startRequested);
+                var address = string.Format("{0}:{1}", host, port);
+                using (var nativeCredentials = credentials.ToNativeCredentials())
+                {
+                    if (nativeCredentials != null)
+                    {
+                        return handle.AddSecurePort(address, nativeCredentials);
+                    }
+                    else
+                    {
+                        return handle.AddInsecurePort(address);
+                    }
+                }
+            }
         }
 
         /// <summary>
@@ -181,26 +189,6 @@ namespace Grpc.Core
             handle.Dispose();
         }
 
-        private int AddListeningPortInternal(string host, int port, ServerCredentials credentials)
-        {
-            lock (myLock)
-            {
-                Preconditions.CheckState(!startRequested);    
-                var address = string.Format("{0}:{1}", host, port);
-                if (credentials != null)
-                {
-                    using (var nativeCredentials = credentials.ToNativeCredentials())
-                    {
-                        return handle.AddListeningPort(address, nativeCredentials);
-                    }
-                }
-                else
-                {
-                    return handle.AddListeningPort(address);    
-                }
-            }
-        }
-
         /// <summary>
         /// Allows one new RPC call to be received by server.
         /// </summary>
@@ -218,20 +206,20 @@ namespace Grpc.Core
         /// <summary>
         /// Selects corresponding handler for given call and handles the call.
         /// </summary>
-        private async Task InvokeCallHandler(CallSafeHandle call, string method)
+        private async Task HandleCallAsync(ServerRpcNew newRpc)
         {
             try
             {
                 IServerCallHandler callHandler;
-                if (!callHandlers.TryGetValue(method, out callHandler))
+                if (!callHandlers.TryGetValue(newRpc.Method, out callHandler))
                 {
-                    callHandler = new NoSuchMethodCallHandler();
+                    callHandler = NoSuchMethodCallHandler.Instance;
                 }
-                await callHandler.HandleCall(method, call, environment);
+                await callHandler.HandleCall(newRpc, environment);
             }
             catch (Exception e)
             {
-                Console.WriteLine("Exception while handling RPC: " + e);
+                Logger.Warning(e, "Exception while handling RPC.");
             }
         }
 
@@ -240,15 +228,15 @@ namespace Grpc.Core
         /// </summary>
         private void HandleNewServerRpc(bool success, BatchContextSafeHandle ctx)
         {
-            // TODO: handle error
-
-            CallSafeHandle call = ctx.GetServerRpcNewCall();
-            string method = ctx.GetServerRpcNewMethod();
-
-            // after server shutdown, the callback returns with null call
-            if (!call.IsInvalid)
+            if (success)
             {
-                Task.Run(async () => await InvokeCallHandler(call, method));
+                ServerRpcNew newRpc = ctx.GetServerRpcNew();
+
+                // after server shutdown, the callback returns with null call
+                if (!newRpc.Call.IsInvalid)
+                {
+                    Task.Run(async () => await HandleCallAsync(newRpc));
+                }
             }
 
             AllowOneRpc();
diff --git a/src/csharp/Grpc.Core/ServerCallContext.cs b/src/csharp/Grpc.Core/ServerCallContext.cs
index bc9a499c51..0c48adaea5 100644
--- a/src/csharp/Grpc.Core/ServerCallContext.cs
+++ b/src/csharp/Grpc.Core/ServerCallContext.cs
@@ -33,6 +33,7 @@
 
 using System;
 using System.Runtime.CompilerServices;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace Grpc.Core
@@ -42,14 +43,104 @@ namespace Grpc.Core
     /// </summary>
     public sealed class ServerCallContext
     {
-        // TODO(jtattermusch): add cancellationToken
+        // TODO(jtattermusch): expose method to send initial metadata back to client
 
-        // TODO(jtattermusch): add deadline info
+        private readonly string method;
+        private readonly string host;
+        private readonly string peer;
+        private readonly DateTime deadline;
+        private readonly Metadata requestHeaders;
+        private readonly CancellationToken cancellationToken;
+        private readonly Metadata responseTrailers = new Metadata();
 
-        // TODO(jtattermusch): expose initial metadata sent by client for reading
+        private Status status = Status.DefaultSuccess;
 
-        // TODO(jtattermusch): expose method to send initial metadata back to client
+        public ServerCallContext(string method, string host, string peer, DateTime deadline, Metadata requestHeaders, CancellationToken cancellationToken)
+        {
+            this.method = method;
+            this.host = host;
+            this.peer = peer;
+            this.deadline = deadline;
+            this.requestHeaders = requestHeaders;
+            this.cancellationToken = cancellationToken;
+        }
+            
+        /// <summary> Name of method called in this RPC. </summary>
+        public string Method
+        {
+            get
+            {
+                return this.method;
+            }
+        }
+
+        /// <summary> Name of host called in this RPC. </summary>
+        public string Host
+        {
+            get
+            {
+                return this.host;
+            }
+        }
+
+        /// <summary> Address of the remote endpoint in URI format. </summary>
+        public string Peer
+        {
+            get
+            {
+                return this.peer;
+            }
+        }
+
+        /// <summary> Deadline for this RPC. </summary>
+        public DateTime Deadline
+        {
+            get
+            {
+                return this.deadline;
+            }
+        }
+
+        /// <summary> Initial metadata sent by client. </summary>
+        public Metadata RequestHeaders
+        {
+            get
+            {
+                return this.requestHeaders;
+            }
+        }
+
+        // TODO(jtattermusch): support signalling cancellation.
+        /// <summary> Cancellation token signals when call is cancelled. </summary>
+        public CancellationToken CancellationToken
+        {
+            get
+            {
+                return this.cancellationToken;
+            }
+        }
+
+        /// <summary> Trailers to send back to client after RPC finishes.</summary>
+        public Metadata ResponseTrailers
+        {
+            get
+            {
+                return this.responseTrailers;
+            }
+        }
+
+        /// <summary> Status to send back to client after RPC finishes.</summary>
+        public Status Status
+        {
+            get
+            {
+                return this.status;
+            }
 
-        // TODO(jtattermusch): allow setting status and trailing metadata to send after handler completes.
+            set
+            {
+                status = value;
+            }
+        }
     }
 }
diff --git a/src/csharp/Grpc.Core/ServerCredentials.cs b/src/csharp/Grpc.Core/ServerCredentials.cs
index ab7d0b4914..32ed4b78a1 100644
--- a/src/csharp/Grpc.Core/ServerCredentials.cs
+++ b/src/csharp/Grpc.Core/ServerCredentials.cs
@@ -35,6 +35,7 @@ using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using Grpc.Core.Internal;
+using Grpc.Core.Utils;
 
 namespace Grpc.Core
 {
@@ -43,67 +44,99 @@ namespace Grpc.Core
     /// </summary>
     public abstract class ServerCredentials
     {
+        static readonly ServerCredentials InsecureInstance = new InsecureServerCredentialsImpl();
+
+        /// <summary>
+        /// Returns instance of credential that provides no security and 
+        /// will result in creating an unsecure server port with no encryption whatsoever.
+        /// </summary>
+        public static ServerCredentials Insecure
+        {
+            get
+            {
+                return InsecureInstance;
+            }
+        }
+
         /// <summary>
         /// Creates native object for the credentials.
         /// </summary>
         /// <returns>The native credentials.</returns>
         internal abstract ServerCredentialsSafeHandle ToNativeCredentials();
+
+        private sealed class InsecureServerCredentialsImpl : ServerCredentials
+        {
+            internal override ServerCredentialsSafeHandle ToNativeCredentials()
+            {
+                return null;
+            }
+        }
     }
 
     /// <summary>
-    /// Key certificate pair (in PEM encoding).
+    /// Server-side SSL credentials.
     /// </summary>
-    public class KeyCertificatePair
+    public class SslServerCredentials : ServerCredentials
     {
-        readonly string certChain;
-        readonly string privateKey;
+        readonly IList<KeyCertificatePair> keyCertificatePairs;
+        readonly string rootCertificates;
 
-        public KeyCertificatePair(string certChain, string privateKey)
+        /// <summary>
+        /// Creates server-side SSL credentials.
+        /// </summary>
+        /// <param name="rootCertificates">PEM encoded client root certificates used to authenticate client.</param>
+        /// <param name="keyCertificatePairs">Key-certificates to use.</param>
+        public SslServerCredentials(IEnumerable<KeyCertificatePair> keyCertificatePairs, string rootCertificates)
         {
-            this.certChain = certChain;
-            this.privateKey = privateKey;
+            this.keyCertificatePairs = new List<KeyCertificatePair>(keyCertificatePairs).AsReadOnly();
+            Preconditions.CheckArgument(this.keyCertificatePairs.Count > 0,
+                "At least one KeyCertificatePair needs to be provided");
+            this.rootCertificates = rootCertificates;
         }
 
-        public string CertChain
+        /// <summary>
+        /// Creates server-side SSL credentials.
+        /// This constructor should be use if you do not wish to autheticate client
+        /// using client root certificates.
+        /// </summary>
+        /// <param name="keyCertificatePairs">Key-certificates to use.</param>
+        public SslServerCredentials(IEnumerable<KeyCertificatePair> keyCertificatePairs) : this(keyCertificatePairs, null)
         {
-            get
-            {
-                return certChain;
-            }
         }
 
-        public string PrivateKey
+        /// <summary>
+        /// Key-certificate pairs.
+        /// </summary>
+        public IList<KeyCertificatePair> KeyCertificatePairs
         {
             get
             {
-                return privateKey;
+                return this.keyCertificatePairs;
             }
         }
-    }
-
-    /// <summary>
-    /// Server-side SSL credentials.
-    /// </summary>
-    public class SslServerCredentials : ServerCredentials
-    {
-        ImmutableList<KeyCertificatePair> keyCertPairs;
 
-        public SslServerCredentials(ImmutableList<KeyCertificatePair> keyCertPairs)
+        /// <summary>
+        /// PEM encoded client root certificates.
+        /// </summary>
+        public string RootCertificates
         {
-            this.keyCertPairs = keyCertPairs;
+            get
+            {
+                return this.rootCertificates;
+            }
         }
 
         internal override ServerCredentialsSafeHandle ToNativeCredentials()
         {
-            int count = keyCertPairs.Count;
+            int count = keyCertificatePairs.Count;
             string[] certChains = new string[count];
             string[] keys = new string[count];
             for (int i = 0; i < count; i++)
             {
-                certChains[i] = keyCertPairs[i].CertChain;
-                keys[i] = keyCertPairs[i].PrivateKey;
+                certChains[i] = keyCertificatePairs[i].CertificateChain;
+                keys[i] = keyCertificatePairs[i].PrivateKey;
             }
-            return ServerCredentialsSafeHandle.CreateSslCredentials(certChains, keys);
+            return ServerCredentialsSafeHandle.CreateSslCredentials(rootCertificates, certChains, keys);
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/ServerMethods.cs b/src/csharp/Grpc.Core/ServerMethods.cs
index 377b78eb30..d457770203 100644
--- a/src/csharp/Grpc.Core/ServerMethods.cs
+++ b/src/csharp/Grpc.Core/ServerMethods.cs
@@ -42,28 +42,28 @@ namespace Grpc.Core
     /// <summary>
     /// Server-side handler for unary call.
     /// </summary>
-    public delegate Task<TResponse> UnaryServerMethod<TRequest, TResponse>(ServerCallContext context, TRequest request)
+    public delegate Task<TResponse> UnaryServerMethod<TRequest, TResponse>(TRequest request, ServerCallContext context)
         where TRequest : class
         where TResponse : class;
 
     /// <summary>
     /// Server-side handler for client streaming call.
     /// </summary>
-    public delegate Task<TResponse> ClientStreamingServerMethod<TRequest, TResponse>(ServerCallContext context, IAsyncStreamReader<TRequest> requestStream)
+    public delegate Task<TResponse> ClientStreamingServerMethod<TRequest, TResponse>(IAsyncStreamReader<TRequest> requestStream, ServerCallContext context)
         where TRequest : class
         where TResponse : class;
 
     /// <summary>
     /// Server-side handler for server streaming call.
     /// </summary>
-    public delegate Task ServerStreamingServerMethod<TRequest, TResponse>(ServerCallContext context, TRequest request, IServerStreamWriter<TResponse> responseStream)
+    public delegate Task ServerStreamingServerMethod<TRequest, TResponse>(TRequest request, IServerStreamWriter<TResponse> responseStream, ServerCallContext context)
         where TRequest : class
         where TResponse : class;
 
     /// <summary>
     /// Server-side handler for bidi streaming call.
     /// </summary>
-    public delegate Task DuplexStreamingServerMethod<TRequest, TResponse>(ServerCallContext context, IAsyncStreamReader<TRequest> requestStream, IServerStreamWriter<TResponse> responseStream)
+    public delegate Task DuplexStreamingServerMethod<TRequest, TResponse>(IAsyncStreamReader<TRequest> requestStream, IServerStreamWriter<TResponse> responseStream, ServerCallContext context)
         where TRequest : class
         where TResponse : class;
 }
diff --git a/src/csharp/Grpc.Core/Utils/BenchmarkUtil.cs b/src/csharp/Grpc.Core/Utils/BenchmarkUtil.cs
index 4180d98938..82653c3a1f 100644
--- a/src/csharp/Grpc.Core/Utils/BenchmarkUtil.cs
+++ b/src/csharp/Grpc.Core/Utils/BenchmarkUtil.cs
@@ -46,13 +46,15 @@ namespace Grpc.Core.Utils
         /// </summary>
         public static void RunBenchmark(int warmupIterations, int benchmarkIterations, Action action)
         {
-            Console.WriteLine("Warmup iterations: " + warmupIterations);
+            var logger = GrpcEnvironment.Logger;
+            
+            logger.Info("Warmup iterations: {0}", warmupIterations);
             for (int i = 0; i < warmupIterations; i++)
             {
                 action();
             }
 
-            Console.WriteLine("Benchmark iterations: " + benchmarkIterations);
+            logger.Info("Benchmark iterations: {0}", benchmarkIterations);
             var stopwatch = new Stopwatch();
             stopwatch.Start();
             for (int i = 0; i < benchmarkIterations; i++)
@@ -60,8 +62,8 @@ namespace Grpc.Core.Utils
                 action();
             }
             stopwatch.Stop();
-            Console.WriteLine("Elapsed time: " + stopwatch.ElapsedMilliseconds + "ms");
-            Console.WriteLine("Ops per second: " + (int)((double)benchmarkIterations  * 1000 / stopwatch.ElapsedMilliseconds));
+            logger.Info("Elapsed time: {0}ms", stopwatch.ElapsedMilliseconds);
+            logger.Info("Ops per second: {0}", (int)((double)benchmarkIterations  * 1000 / stopwatch.ElapsedMilliseconds));
         }
     }
 }
diff --git a/src/csharp/Grpc.Core/Version.cs b/src/csharp/Grpc.Core/Version.cs
index f1db1f6157..b5cb652945 100644
--- a/src/csharp/Grpc.Core/Version.cs
+++ b/src/csharp/Grpc.Core/Version.cs
@@ -2,4 +2,4 @@ using System.Reflection;
 using System.Runtime.CompilerServices;
 
 // The current version of gRPC C#.
-[assembly: AssemblyVersion("0.6.0.*")]
+[assembly: AssemblyVersion(Grpc.Core.VersionInfo.CurrentVersion + ".*")]
diff --git a/src/csharp/Grpc.Core/VersionInfo.cs b/src/csharp/Grpc.Core/VersionInfo.cs
new file mode 100644
index 0000000000..656a3d47bb
--- /dev/null
+++ b/src/csharp/Grpc.Core/VersionInfo.cs
@@ -0,0 +1,13 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+namespace Grpc.Core
+{
+    public static class VersionInfo
+    {
+        /// <summary>
+        /// Current version of gRPC
+        /// </summary>
+        public const string CurrentVersion = "0.6.0";
+    }
+}
diff --git a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
index 5d5401593d..85996a570c 100644
--- a/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
+++ b/src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProductVersion>10.0.0</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}</ProjectGuid>
@@ -11,7 +11,7 @@
     <AssemblyName>MathClient</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,16 +20,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.Examples.MathClient/MathClient.cs b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
index cfe2a06916..f9839d99f1 100644
--- a/src/csharp/Grpc.Examples.MathClient/MathClient.cs
+++ b/src/csharp/Grpc.Examples.MathClient/MathClient.cs
@@ -39,7 +39,7 @@ namespace math
     {
         public static void Main(string[] args)
         {
-            using (Channel channel = new Channel("127.0.0.1", 23456))
+            using (Channel channel = new Channel("127.0.0.1", 23456, Credentials.Insecure))
             {
                 Math.IMathClient client = new Math.MathClient(channel);
                 MathExamples.DivExample(client);
diff --git a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
index 677d87da20..6c8856cc92 100644
--- a/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
+++ b/src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProductVersion>10.0.0</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>{BF62FE08-373A-43D6-9D73-41CAA38B7011}</ProjectGuid>
@@ -11,7 +11,7 @@
     <AssemblyName>MathServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,16 +20,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/csharp/Grpc.Examples.MathServer/MathServer.cs b/src/csharp/Grpc.Examples.MathServer/MathServer.cs
index f440985112..468eefbe3e 100644
--- a/src/csharp/Grpc.Examples.MathServer/MathServer.cs
+++ b/src/csharp/Grpc.Examples.MathServer/MathServer.cs
@@ -44,7 +44,7 @@ namespace math
 
             Server server = new Server();
             server.AddServiceDefinition(Math.BindService(new MathServiceImpl()));
-            int port = server.AddListeningPort(host, 23456);
+            int port = server.AddPort(host, 23456, ServerCredentials.Insecure);
             server.Start();
 
             Console.WriteLine("MathServer listening on port " + port);
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index e7c4b33120..26f332c1cf 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -56,9 +56,9 @@ namespace math.Tests
         {
             server = new Server();
             server.AddServiceDefinition(Math.BindService(new MathServiceImpl()));
-            int port = server.AddListeningPort(host, Server.PickUnusedPort);
+            int port = server.AddPort(host, Server.PickUnusedPort, ServerCredentials.Insecure);
             server.Start();
-            channel = new Channel(host, port);
+            channel = new Channel(host, port, Credentials.Insecure);
             client = Math.NewClient(channel);
 
             // TODO(jtattermusch): get rid of the custom header here once we have dedicated tests
@@ -108,69 +108,105 @@ namespace math.Tests
         }
 
         [Test]
-        public void DivAsync()
+        public async Task DivAsync()
         {
-            Task.Run(async () =>
+            DivReply response = await client.DivAsync(new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build());
+            Assert.AreEqual(3, response.Quotient);
+            Assert.AreEqual(1, response.Remainder);
+        }
+
+        [Test]
+        public async Task Fib()
+        {
+            using (var call = client.Fib(new FibArgs.Builder { Limit = 6 }.Build()))
             {
-                DivReply response = await client.DivAsync(new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build());
-                Assert.AreEqual(3, response.Quotient);
-                Assert.AreEqual(1, response.Remainder);
-            }).Wait();
+                var responses = await call.ResponseStream.ToList();
+                CollectionAssert.AreEqual(new List<long> { 1, 1, 2, 3, 5, 8 },
+                    responses.ConvertAll((n) => n.Num_));
+            }
         }
 
         [Test]
-        public void Fib()
+        public async Task FibWithCancel()
         {
-            Task.Run(async () =>
+            var cts = new CancellationTokenSource();
+
+            using (var call = client.Fib(new FibArgs.Builder { Limit = 0 }.Build(), 
+                cancellationToken: cts.Token))
             {
-                using (var call = client.Fib(new FibArgs.Builder { Limit = 6 }.Build()))
+                List<long> responses = new List<long>();
+
+                try
+                {
+                    while (await call.ResponseStream.MoveNext())
+                    {
+                        if (responses.Count == 0)
+                        {
+                            cts.CancelAfter(500);  // make sure we cancel soon
+                        }
+                        responses.Add(call.ResponseStream.Current.Num_);
+                    }
+                    Assert.Fail();
+                }
+                catch (RpcException e)
                 {
-                    var responses = await call.ResponseStream.ToList();
-                    CollectionAssert.AreEqual(new List<long> { 1, 1, 2, 3, 5, 8 },
-                        responses.ConvertAll((n) => n.Num_));
+                    Assert.IsTrue(responses.Count > 0);
+                    Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
                 }
-            }).Wait();
+            }
         }
 
-        // TODO: test Fib with limit=0 and cancellation
         [Test]
-        public void Sum()
+        public async Task FibWithDeadline()
         {
-            Task.Run(async () =>
+            using (var call = client.Fib(new FibArgs.Builder { Limit = 0 }.Build(), 
+                deadline: DateTime.UtcNow.AddMilliseconds(500)))
             {
-                using (var call = client.Sum())
+                try
                 {
-                    var numbers = new List<long> { 10, 20, 30 }.ConvertAll(
-                             n => Num.CreateBuilder().SetNum_(n).Build());
-
-                    await call.RequestStream.WriteAll(numbers);
-                    var result = await call.Result;
-                    Assert.AreEqual(60, result.Num_);
+                    await call.ResponseStream.ToList();
+                    Assert.Fail();
+                }
+                catch (RpcException e)
+                {
+                    Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode);
                 }
-            }).Wait();
+            }
         }
 
+        // TODO: test Fib with limit=0 and cancellation
         [Test]
-        public void DivMany()
+        public async Task Sum()
         {
-            Task.Run(async () =>
+            using (var call = client.Sum())
             {
-                var divArgsList = new List<DivArgs>
-                {
-                    new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build(),
-                    new DivArgs.Builder { Dividend = 100, Divisor = 21 }.Build(),
-                    new DivArgs.Builder { Dividend = 7, Divisor = 2 }.Build()
-                };
+                var numbers = new List<long> { 10, 20, 30 }.ConvertAll(
+                            n => Num.CreateBuilder().SetNum_(n).Build());
 
-                using (var call = client.DivMany())
-                {
-                    await call.RequestStream.WriteAll(divArgsList);
-                    var result = await call.ResponseStream.ToList();
+                await call.RequestStream.WriteAll(numbers);
+                var result = await call.ResponseAsync;
+                Assert.AreEqual(60, result.Num_);
+            }
+        }
 
-                    CollectionAssert.AreEqual(new long[] { 3, 4, 3 }, result.ConvertAll((divReply) => divReply.Quotient));
-                    CollectionAssert.AreEqual(new long[] { 1, 16, 1 }, result.ConvertAll((divReply) => divReply.Remainder));
-                }
-            }).Wait();
+        [Test]
+        public async Task DivMany()
+        {
+            var divArgsList = new List<DivArgs>
+            {
+                new DivArgs.Builder { Dividend = 10, Divisor = 3 }.Build(),
+                new DivArgs.Builder { Dividend = 100, Divisor = 21 }.Build(),
+                new DivArgs.Builder { Dividend = 7, Divisor = 2 }.Build()
+            };
+
+            using (var call = client.DivMany())
+            {
+                await call.RequestStream.WriteAll(divArgsList);
+                var result = await call.ResponseStream.ToList();
+
+                CollectionAssert.AreEqual(new long[] { 3, 4, 3 }, result.ConvertAll((divReply) => divReply.Quotient));
+                CollectionAssert.AreEqual(new long[] { 1, 16, 1 }, result.ConvertAll((divReply) => divReply.Remainder));
+            }
         }
     }
 }
diff --git a/src/csharp/Grpc.Examples/MathExamples.cs b/src/csharp/Grpc.Examples/MathExamples.cs
index 7deb651689..06d81a4d83 100644
--- a/src/csharp/Grpc.Examples/MathExamples.cs
+++ b/src/csharp/Grpc.Examples/MathExamples.cs
@@ -46,8 +46,7 @@ namespace math
 
         public static async Task DivAsyncExample(Math.IMathClient client)
         {
-            Task<DivReply> resultTask = client.DivAsync(new DivArgs.Builder { Dividend = 4, Divisor = 5 }.Build());
-            DivReply result = await resultTask;
+            DivReply result = await client.DivAsync(new DivArgs.Builder { Dividend = 4, Divisor = 5 }.Build());
             Console.WriteLine("DivAsync Result: " + result);
         }
 
@@ -72,7 +71,7 @@ namespace math
             using (var call = client.Sum())
             {
                 await call.RequestStream.WriteAll(numbers);
-                Console.WriteLine("Sum Result: " + await call.Result);
+                Console.WriteLine("Sum Result: " + await call.ResponseAsync);
             }
         }
 
@@ -104,7 +103,7 @@ namespace math
             using (var sumCall = client.Sum())
             {
                 await sumCall.RequestStream.WriteAll(numbers);
-                sum = await sumCall.Result;
+                sum = await sumCall.ResponseAsync;
             }
 
             DivReply result = await client.DivAsync(new DivArgs.Builder { Dividend = sum.Num_, Divisor = numbers.Count }.Build());
diff --git a/src/csharp/Grpc.Examples/MathGrpc.cs b/src/csharp/Grpc.Examples/MathGrpc.cs
index 1805972ce3..67827e7b4f 100644
--- a/src/csharp/Grpc.Examples/MathGrpc.cs
+++ b/src/csharp/Grpc.Examples/MathGrpc.cs
@@ -44,20 +44,20 @@ namespace math {
     // client interface
     public interface IMathClient
     {
-      global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      Task<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncUnaryCall<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
     public interface IMath
     {
-      Task<global::math.DivReply> Div(ServerCallContext context, global::math.DivArgs request);
-      Task DivMany(ServerCallContext context, IAsyncStreamReader<global::math.DivArgs> requestStream, IServerStreamWriter<global::math.DivReply> responseStream);
-      Task Fib(ServerCallContext context, global::math.FibArgs request, IServerStreamWriter<global::math.Num> responseStream);
-      Task<global::math.Num> Sum(ServerCallContext context, IAsyncStreamReader<global::math.Num> requestStream);
+      Task<global::math.DivReply> Div(global::math.DivArgs request, ServerCallContext context);
+      Task DivMany(IAsyncStreamReader<global::math.DivArgs> requestStream, IServerStreamWriter<global::math.DivReply> responseStream, ServerCallContext context);
+      Task Fib(global::math.FibArgs request, IServerStreamWriter<global::math.Num> responseStream, ServerCallContext context);
+      Task<global::math.Num> Sum(IAsyncStreamReader<global::math.Num> requestStream, ServerCallContext context);
     }
 
     // client stub
@@ -66,29 +66,29 @@ namespace math {
       public MathClient(Channel channel) : base(channel)
       {
       }
-      public global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public global::math.DivReply Div(global::math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Div, headers);
+        var call = CreateCall(__ServiceName, __Method_Div, headers, deadline);
         return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncUnaryCall<global::math.DivReply> DivAsync(global::math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Div, headers);
+        var call = CreateCall(__ServiceName, __Method_Div, headers, deadline);
         return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::math.DivArgs, global::math.DivReply> DivMany(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_DivMany, headers);
+        var call = CreateCall(__ServiceName, __Method_DivMany, headers, deadline);
         return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
-      public AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncServerStreamingCall<global::math.Num> Fib(global::math.FibArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Fib, headers);
+        var call = CreateCall(__ServiceName, __Method_Fib, headers, deadline);
         return Calls.AsyncServerStreamingCall(call, request, cancellationToken);
       }
-      public AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncClientStreamingCall<global::math.Num, global::math.Num> Sum(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Sum, headers);
+        var call = CreateCall(__ServiceName, __Method_Sum, headers, deadline);
         return Calls.AsyncClientStreamingCall(call, cancellationToken);
       }
     }
diff --git a/src/csharp/Grpc.Examples/MathServiceImpl.cs b/src/csharp/Grpc.Examples/MathServiceImpl.cs
index e247ac9d73..dd26b1d350 100644
--- a/src/csharp/Grpc.Examples/MathServiceImpl.cs
+++ b/src/csharp/Grpc.Examples/MathServiceImpl.cs
@@ -45,17 +45,22 @@ namespace math
     /// </summary>
     public class MathServiceImpl : Math.IMath
     {
-        public Task<DivReply> Div(ServerCallContext context, DivArgs request)
+        public Task<DivReply> Div(DivArgs request, ServerCallContext context)
         {
             return Task.FromResult(DivInternal(request));
         }
 
-        public async Task Fib(ServerCallContext context, FibArgs request, IServerStreamWriter<Num> responseStream)
+        public async Task Fib(FibArgs request, IServerStreamWriter<Num> responseStream, ServerCallContext context)
         {
             if (request.Limit <= 0)
             {
-                // TODO(jtattermusch): support cancellation
-                throw new NotImplementedException("Not implemented yet");
+                // keep streaming the sequence until cancelled.
+                IEnumerator<Num> fibEnumerator = FibInternal(long.MaxValue).GetEnumerator();
+                while (!context.CancellationToken.IsCancellationRequested && fibEnumerator.MoveNext())
+                {
+                    await responseStream.WriteAsync(fibEnumerator.Current);
+                    await Task.Delay(100);
+                }
             }
 
             if (request.Limit > 0)
@@ -67,7 +72,7 @@ namespace math
             }
         }
 
-        public async Task<Num> Sum(ServerCallContext context, IAsyncStreamReader<Num> requestStream)
+        public async Task<Num> Sum(IAsyncStreamReader<Num> requestStream, ServerCallContext context)
         {
             long sum = 0;
             await requestStream.ForEach(async num =>
@@ -77,7 +82,7 @@ namespace math
             return Num.CreateBuilder().SetNum_(sum).Build();
         }
 
-        public async Task DivMany(ServerCallContext context, IAsyncStreamReader<DivArgs> requestStream, IServerStreamWriter<DivReply> responseStream)
+        public async Task DivMany(IAsyncStreamReader<DivArgs> requestStream, IServerStreamWriter<DivReply> responseStream, ServerCallContext context)
         {
             await requestStream.ForEach(async divArgs =>
             {
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
index 73ff0e74b5..9d89698a8f 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs
@@ -59,9 +59,9 @@ namespace Grpc.HealthCheck.Tests
 
             server = new Server();
             server.AddServiceDefinition(Grpc.Health.V1Alpha.Health.BindService(serviceImpl));
-            int port = server.AddListeningPort(Host, Server.PickUnusedPort);
+            int port = server.AddPort(Host, Server.PickUnusedPort, ServerCredentials.Insecure);
             server.Start();
-            channel = new Channel(Host, port);
+            channel = new Channel(Host, port, Credentials.Insecure);
 
             client = Grpc.Health.V1Alpha.Health.NewClient(channel);
         }
@@ -87,9 +87,7 @@ namespace Grpc.HealthCheck.Tests
         [Test]
         public void ServiceDoesntExist()
         {
-            // TODO(jtattermusch): currently, this returns wrong status code, because we don't enable sending arbitrary status code from
-            // server handlers yet.
-            Assert.Throws(typeof(RpcException), () => client.Check(HealthCheckRequest.CreateBuilder().SetHost("").SetService("nonexistent.service").Build()));
+            Assert.Throws(Is.TypeOf(typeof(RpcException)).And.Property("Status").Property("StatusCode").EqualTo(StatusCode.NotFound), () => client.Check(HealthCheckRequest.CreateBuilder().SetHost("").SetService("nonexistent.service").Build()));
         }
 
         // TODO(jtattermusch): add test with timeout once timeouts are supported
diff --git a/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs b/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
index 9b7c4f2140..7184415655 100644
--- a/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
+++ b/src/csharp/Grpc.HealthCheck.Tests/HealthServiceImplTest.cs
@@ -101,7 +101,7 @@ namespace Grpc.HealthCheck.Tests
 
         private static HealthCheckResponse.Types.ServingStatus GetStatusHelper(HealthServiceImpl impl, string host, string service)
         {
-            return impl.Check(null, HealthCheckRequest.CreateBuilder().SetHost(host).SetService(service).Build()).Result.Status;
+            return impl.Check(HealthCheckRequest.CreateBuilder().SetHost(host).SetService(service).Build(), null).Result.Status;
         }
     }
 }
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index 3aebdcb557..892cdb3f04 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -24,14 +24,14 @@ namespace Grpc.Health.V1Alpha {
     // client interface
     public interface IHealthClient
     {
-      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
     public interface IHealth
     {
-      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> Check(ServerCallContext context, global::Grpc.Health.V1Alpha.HealthCheckRequest request);
+      Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, ServerCallContext context);
     }
 
     // client stub
@@ -40,14 +40,14 @@ namespace Grpc.Health.V1Alpha {
       public HealthClient(Channel channel) : base(channel)
       {
       }
-      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public global::Grpc.Health.V1Alpha.HealthCheckResponse Check(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Check, headers);
+        var call = CreateCall(__ServiceName, __Method_Check, headers, deadline);
         return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncUnaryCall<global::Grpc.Health.V1Alpha.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1Alpha.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_Check, headers);
+        var call = CreateCall(__ServiceName, __Method_Check, headers, deadline);
         return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
     }
diff --git a/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs b/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
index db3a2a0942..3c3b9c35f1 100644
--- a/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthServiceImpl.cs
@@ -95,7 +95,7 @@ namespace Grpc.HealthCheck
             }
         }
 
-        public Task<HealthCheckResponse> Check(ServerCallContext context, HealthCheckRequest request)
+        public Task<HealthCheckResponse> Check(HealthCheckRequest request, ServerCallContext context)
         {
             lock (myLock)
             {
diff --git a/src/csharp/Grpc.HealthCheck/Settings.StyleCop b/src/csharp/Grpc.HealthCheck/Settings.StyleCop
new file mode 100644
index 0000000000..2942add962
--- /dev/null
+++ b/src/csharp/Grpc.HealthCheck/Settings.StyleCop
@@ -0,0 +1,10 @@
+<StyleCopSettings Version="105">
+  <SourceFileList>
+    <SourceFile>Health.cs</SourceFile>
+    <Settings>
+    <GlobalSettings>
+      <BooleanProperty Name="RulesEnabledByDefault">False</BooleanProperty>
+    </GlobalSettings>
+    </Settings>
+  </SourceFileList>
+</StyleCopSettings>
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
index 328acb5b47..37d53d61e0 100644
--- a/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj
@@ -2,9 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
-    <ProductVersion>10.0.0</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{3D166931-BA2D-416E-95A3-D36E8F6E90B9}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>Grpc.IntegrationTesting.Client</RootNamespace>
@@ -12,7 +10,7 @@
     <StartupObject>Grpc.IntegrationTesting.Client.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -21,16 +19,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -48,6 +46,10 @@
       <Project>{C61154BA-DD4A-4838-8420-0162A28925E0}</Project>
       <Name>Grpc.IntegrationTesting</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Grpc.Core\Grpc.Core.csproj">
+      <Project>{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}</Project>
+      <Name>Grpc.Core</Name>
+    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Client/app.config b/src/csharp/Grpc.IntegrationTesting.Client/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting.Client/app.config
+++ b/src/csharp/Grpc.IntegrationTesting.Client/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
index ae184c1dc7..0f3b9eb510 100644
--- a/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
+++ b/src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj
@@ -2,9 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
-    <ProductVersion>10.0.0</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{A654F3B8-E859-4E6A-B30D-227527DBEF0D}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>Grpc.IntegrationTesting.Server</RootNamespace>
@@ -12,7 +10,7 @@
     <StartupObject>Grpc.IntegrationTesting.Server.Program</StartupObject>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -21,16 +19,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -48,6 +46,10 @@
       <Project>{C61154BA-DD4A-4838-8420-0162A28925E0}</Project>
       <Name>Grpc.IntegrationTesting</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Grpc.Core\Grpc.Core.csproj">
+      <Project>{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}</Project>
+      <Name>Grpc.Core</Name>
+    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
diff --git a/src/csharp/Grpc.IntegrationTesting.Server/app.config b/src/csharp/Grpc.IntegrationTesting.Server/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting.Server/app.config
+++ b/src/csharp/Grpc.IntegrationTesting.Server/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
index d3c69ab9eb..db2e304d37 100644
--- a/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
+++ b/src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj
@@ -2,16 +2,15 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
-    <ProductVersion>8.0.30703</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{C61154BA-DD4A-4838-8420-0162A28925E0}</ProjectGuid>
     <OutputType>Library</OutputType>
     <RootNamespace>Grpc.IntegrationTesting</RootNamespace>
     <AssemblyName>Grpc.IntegrationTesting</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <NuGetPackageImportStamp>041c163e</NuGetPackageImportStamp>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
@@ -20,45 +19,36 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Externalconsole>true</Externalconsole>
-    <PlatformTarget>x86</PlatformTarget>
+    <PlatformTarget>AnyCPU</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Apis.Auth, Version=1.9.1.12395, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.dll</HintPath>
-    </Reference>
-    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.1.12399, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Auth.1.9.1\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
-    </Reference>
-    <Reference Include="Google.Apis.Core, Version=1.9.1.12394, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Google.Apis.Core.1.9.1\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
+    <Reference Include="BouncyCastle.Crypto">
+      <HintPath>..\packages\BouncyCastle.1.7.0\lib\Net40-Client\BouncyCastle.Crypto.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Auth, Version=1.9.2.27817, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.9.2.27820, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Auth.1.9.2\lib\net40\Google.Apis.Auth.PlatformServices.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="Google.Apis.Core, Version=1.9.2.27816, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+      <HintPath>..\packages\Google.Apis.Core.1.9.2\lib\portable-net40+sl50+win+wpa81+wp80\Google.Apis.Core.dll</HintPath>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+    <Reference Include="Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.6.0.6\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="nunit.framework">
       <HintPath>..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
@@ -67,24 +57,32 @@
     <Reference Include="Google.ProtocolBuffers">
       <HintPath>..\packages\Google.ProtocolBuffers.2.4.1.521\lib\net40\Google.ProtocolBuffers.dll</HintPath>
     </Reference>
-    <Reference Include="System.Collections.Immutable, Version=1.1.36.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-    </Reference>
     <Reference Include="System.Interactive.Async">
       <HintPath>..\packages\Ix-Async.1.2.3\lib\net45\System.Interactive.Async.dll</HintPath>
     </Reference>
     <Reference Include="System.Net" />
     <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.Extensions, Version=2.2.28.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="System.Net.Http.Extensions, Version=2.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Extensions.dll</HintPath>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Extensions.dll</HintPath>
     </Reference>
-    <Reference Include="System.Net.Http.Primitives, Version=4.2.28.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+    <Reference Include="System.Net.Http.Primitives, Version=4.2.29.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.Net.Http.2.2.28\lib\net45\System.Net.Http.Primitives.dll</HintPath>
+      <HintPath>..\packages\Microsoft.Net.Http.2.2.29\lib\net45\System.Net.Http.Primitives.dll</HintPath>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
+    <Reference Include="Microsoft.Threading.Tasks">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop">
+      <HintPath>..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Collections.Immutable">
+      <HintPath>..\packages\System.Collections.Immutable.1.1.36\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\Grpc.Core\Version.cs">
@@ -99,6 +97,7 @@
     <Compile Include="InteropClient.cs" />
     <Compile Include="TestCredentials.cs" />
     <Compile Include="TestGrpc.cs" />
+    <Compile Include="SslCredentialsTest.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
@@ -133,9 +132,11 @@
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
-  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
-  <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
-    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
-    <Error Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
+  <Import Project="..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
index ea83aaf2c1..7411d91d5a 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
@@ -127,15 +127,15 @@ namespace Grpc.IntegrationTesting
                     {
                         credential = credential.CreateScoped(new[] { AuthScope });
                     }
-                    client.HeaderInterceptor = OAuth2InterceptorFactory.Create(credential);
+                    client.HeaderInterceptor = OAuth2Interceptors.FromCredential(credential);
                 }
 
-                RunTestCase(options.testCase, client);
+                RunTestCaseAsync(options.testCase, client).Wait();
             }
             GrpcEnvironment.Shutdown();
         }
 
-        private void RunTestCase(string testCase, TestService.TestServiceClient client)
+        private async Task RunTestCaseAsync(string testCase, TestService.TestServiceClient client)
         {
             switch (testCase)
             {
@@ -146,16 +146,16 @@ namespace Grpc.IntegrationTesting
                     RunLargeUnary(client);
                     break;
                 case "client_streaming":
-                    RunClientStreaming(client);
+                    await RunClientStreamingAsync(client);
                     break;
                 case "server_streaming":
-                    RunServerStreaming(client);
+                    await RunServerStreamingAsync(client);
                     break;
                 case "ping_pong":
-                    RunPingPong(client);
+                    await RunPingPongAsync(client);
                     break;
                 case "empty_stream":
-                    RunEmptyStream(client);
+                    await RunEmptyStreamAsync(client);
                     break;
                 case "service_account_creds":
                     RunServiceAccountCreds(client);
@@ -170,10 +170,10 @@ namespace Grpc.IntegrationTesting
                     RunPerRpcCreds(client);
                     break;
                 case "cancel_after_begin":
-                    RunCancelAfterBegin(client);
+                    await RunCancelAfterBeginAsync(client);
                     break;
                 case "cancel_after_first_response":
-                    RunCancelAfterFirstResponse(client);
+                    await RunCancelAfterFirstResponseAsync(client);
                     break;
                 case "benchmark_empty_unary":
                     RunBenchmarkEmptyUnary(client);
@@ -207,118 +207,106 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static void RunClientStreaming(TestService.ITestServiceClient client)
+        public static async Task RunClientStreamingAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
-            {
-                Console.WriteLine("running client_streaming");
+            Console.WriteLine("running client_streaming");
 
-                var bodySizes = new List<int> { 27182, 8, 1828, 45904 }.ConvertAll((size) => StreamingInputCallRequest.CreateBuilder().SetPayload(CreateZerosPayload(size)).Build());
+            var bodySizes = new List<int> { 27182, 8, 1828, 45904 }.ConvertAll((size) => StreamingInputCallRequest.CreateBuilder().SetPayload(CreateZerosPayload(size)).Build());
 
-                using (var call = client.StreamingInputCall())
-                {
-                    await call.RequestStream.WriteAll(bodySizes);
+            using (var call = client.StreamingInputCall())
+            {
+                await call.RequestStream.WriteAll(bodySizes);
 
-                    var response = await call.Result;
-                    Assert.AreEqual(74922, response.AggregatedPayloadSize);
-                }
-                Console.WriteLine("Passed!");
-            }).Wait();
+                var response = await call.ResponseAsync;
+                Assert.AreEqual(74922, response.AggregatedPayloadSize);
+            }
+            Console.WriteLine("Passed!");
         }
 
-        public static void RunServerStreaming(TestService.ITestServiceClient client)
+        public static async Task RunServerStreamingAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
-            {
-                Console.WriteLine("running server_streaming");
+            Console.WriteLine("running server_streaming");
 
-                var bodySizes = new List<int> { 31415, 9, 2653, 58979 };
+            var bodySizes = new List<int> { 31415, 9, 2653, 58979 };
 
-                var request = StreamingOutputCallRequest.CreateBuilder()
-                .SetResponseType(PayloadType.COMPRESSABLE)
-                .AddRangeResponseParameters(bodySizes.ConvertAll(
-                    (size) => ResponseParameters.CreateBuilder().SetSize(size).Build()))
-                .Build();
+            var request = StreamingOutputCallRequest.CreateBuilder()
+            .SetResponseType(PayloadType.COMPRESSABLE)
+            .AddRangeResponseParameters(bodySizes.ConvertAll(
+                (size) => ResponseParameters.CreateBuilder().SetSize(size).Build()))
+            .Build();
 
-                using (var call = client.StreamingOutputCall(request))
+            using (var call = client.StreamingOutputCall(request))
+            {
+                var responseList = await call.ResponseStream.ToList();
+                foreach (var res in responseList)
                 {
-                    var responseList = await call.ResponseStream.ToList();
-                    foreach (var res in responseList)
-                    {
-                        Assert.AreEqual(PayloadType.COMPRESSABLE, res.Payload.Type);
-                    }
-                    CollectionAssert.AreEqual(bodySizes, responseList.ConvertAll((item) => item.Payload.Body.Length));
+                    Assert.AreEqual(PayloadType.COMPRESSABLE, res.Payload.Type);
                 }
-                Console.WriteLine("Passed!");
-            }).Wait();
+                CollectionAssert.AreEqual(bodySizes, responseList.ConvertAll((item) => item.Payload.Body.Length));
+            }
+            Console.WriteLine("Passed!");
         }
 
-        public static void RunPingPong(TestService.ITestServiceClient client)
+        public static async Task RunPingPongAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
-            {
-                Console.WriteLine("running ping_pong");
+            Console.WriteLine("running ping_pong");
 
-                using (var call = client.FullDuplexCall())
-                {
-                    await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
-                    .SetResponseType(PayloadType.COMPRESSABLE)
-                    .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(31415))
-                    .SetPayload(CreateZerosPayload(27182)).Build());
+            using (var call = client.FullDuplexCall())
+            {
+                await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
+                .SetResponseType(PayloadType.COMPRESSABLE)
+                .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(31415))
+                .SetPayload(CreateZerosPayload(27182)).Build());
 
-                    Assert.IsTrue(await call.ResponseStream.MoveNext());
-                    Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
-                    Assert.AreEqual(31415, call.ResponseStream.Current.Payload.Body.Length);
+                Assert.IsTrue(await call.ResponseStream.MoveNext());
+                Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
+                Assert.AreEqual(31415, call.ResponseStream.Current.Payload.Body.Length);
 
-                    await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
-                              .SetResponseType(PayloadType.COMPRESSABLE)
-                              .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(9))
-                              .SetPayload(CreateZerosPayload(8)).Build());
+                await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
+                            .SetResponseType(PayloadType.COMPRESSABLE)
+                            .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(9))
+                            .SetPayload(CreateZerosPayload(8)).Build());
 
-                    Assert.IsTrue(await call.ResponseStream.MoveNext());
-                    Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
-                    Assert.AreEqual(9, call.ResponseStream.Current.Payload.Body.Length);
+                Assert.IsTrue(await call.ResponseStream.MoveNext());
+                Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
+                Assert.AreEqual(9, call.ResponseStream.Current.Payload.Body.Length);
 
-                    await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
-                              .SetResponseType(PayloadType.COMPRESSABLE)
-                              .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(2653))
-                              .SetPayload(CreateZerosPayload(1828)).Build());
+                await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
+                            .SetResponseType(PayloadType.COMPRESSABLE)
+                            .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(2653))
+                            .SetPayload(CreateZerosPayload(1828)).Build());
 
-                    Assert.IsTrue(await call.ResponseStream.MoveNext());
-                    Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
-                    Assert.AreEqual(2653, call.ResponseStream.Current.Payload.Body.Length);
+                Assert.IsTrue(await call.ResponseStream.MoveNext());
+                Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
+                Assert.AreEqual(2653, call.ResponseStream.Current.Payload.Body.Length);
 
-                    await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
-                              .SetResponseType(PayloadType.COMPRESSABLE)
-                              .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(58979))
-                              .SetPayload(CreateZerosPayload(45904)).Build());
+                await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
+                            .SetResponseType(PayloadType.COMPRESSABLE)
+                            .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(58979))
+                            .SetPayload(CreateZerosPayload(45904)).Build());
 
-                    Assert.IsTrue(await call.ResponseStream.MoveNext());
-                    Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
-                    Assert.AreEqual(58979, call.ResponseStream.Current.Payload.Body.Length);
+                Assert.IsTrue(await call.ResponseStream.MoveNext());
+                Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
+                Assert.AreEqual(58979, call.ResponseStream.Current.Payload.Body.Length);
 
-                    await call.RequestStream.CompleteAsync();
+                await call.RequestStream.CompleteAsync();
 
-                    Assert.IsFalse(await call.ResponseStream.MoveNext());
-                }
-                Console.WriteLine("Passed!");
-            }).Wait();
+                Assert.IsFalse(await call.ResponseStream.MoveNext());
+            }
+            Console.WriteLine("Passed!");
         }
 
-        public static void RunEmptyStream(TestService.ITestServiceClient client)
+        public static async Task RunEmptyStreamAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
+            Console.WriteLine("running empty_stream");
+            using (var call = client.FullDuplexCall())
             {
-                Console.WriteLine("running empty_stream");
-                using (var call = client.FullDuplexCall())
-                {
-                    await call.RequestStream.CompleteAsync();
+                await call.RequestStream.CompleteAsync();
 
-                    var responseList = await call.ResponseStream.ToList();
-                    Assert.AreEqual(0, responseList.Count);
-                }
-                Console.WriteLine("Passed!");
-            }).Wait();
+                var responseList = await call.ResponseStream.ToList();
+                Assert.AreEqual(0, responseList.Count);
+            }
+            Console.WriteLine("Passed!");
         }
 
         public static void RunServiceAccountCreds(TestService.ITestServiceClient client)
@@ -368,11 +356,7 @@ namespace Grpc.IntegrationTesting
             Assert.IsTrue(credential.RequestAccessTokenAsync(CancellationToken.None).Result);
             string oauth2Token = credential.Token.AccessToken;
 
-            // Intercept calls with an OAuth2 token obtained out-of-band.
-            client.HeaderInterceptor = new MetadataInterceptorDelegate((metadata) =>
-            {
-                metadata.Add(new Metadata.Entry("Authorization", "Bearer " + oauth2Token));
-            });
+            client.HeaderInterceptor = OAuth2Interceptors.FromAccessToken(oauth2Token);
 
             var request = SimpleRequest.CreateBuilder()
                 .SetFillUsername(true)
@@ -393,78 +377,75 @@ namespace Grpc.IntegrationTesting
             var credential = GoogleCredential.GetApplicationDefault().CreateScoped(new[] { AuthScope });
             Assert.IsTrue(credential.RequestAccessTokenAsync(CancellationToken.None).Result);
             string oauth2Token = credential.Token.AccessToken;
+            var headerInterceptor = OAuth2Interceptors.FromAccessToken(oauth2Token);
 
             var request = SimpleRequest.CreateBuilder()
                 .SetFillUsername(true)
                 .SetFillOauthScope(true)
                 .Build();
 
-            var response = client.UnaryCall(request, headers: new Metadata { new Metadata.Entry("Authorization", "Bearer " + oauth2Token) } );
+            var headers = new Metadata();
+            headerInterceptor(headers);
+            var response = client.UnaryCall(request, headers: headers);
 
             Assert.AreEqual(AuthScopeResponse, response.OauthScope);
             Assert.AreEqual(ServiceAccountUser, response.Username);
             Console.WriteLine("Passed!");
         }
 
-        public static void RunCancelAfterBegin(TestService.ITestServiceClient client)
+        public static async Task RunCancelAfterBeginAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
+            Console.WriteLine("running cancel_after_begin");
+
+            var cts = new CancellationTokenSource();
+            using (var call = client.StreamingInputCall(cancellationToken: cts.Token))
             {
-                Console.WriteLine("running cancel_after_begin");
+                // TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
+                await Task.Delay(1000);
+                cts.Cancel();
 
-                var cts = new CancellationTokenSource();
-                using (var call = client.StreamingInputCall(cancellationToken: cts.Token))
+                try
                 {
-                    // TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
-                    await Task.Delay(1000);
-                    cts.Cancel();
-
-                    try
-                    {
-                        var response = await call.Result;
-                        Assert.Fail();
-                    }
-                    catch (RpcException e)
-                    {
-                        Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
-                    }
+                    var response = await call.ResponseAsync;
+                    Assert.Fail();
+                }
+                catch (RpcException e)
+                {
+                    Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
                 }
-                Console.WriteLine("Passed!");
-            }).Wait();
+            }
+            Console.WriteLine("Passed!");
         }
 
-        public static void RunCancelAfterFirstResponse(TestService.ITestServiceClient client)
+        public static async Task RunCancelAfterFirstResponseAsync(TestService.ITestServiceClient client)
         {
-            Task.Run(async () =>
-            {
-                Console.WriteLine("running cancel_after_first_response");
+            Console.WriteLine("running cancel_after_first_response");
 
-                var cts = new CancellationTokenSource();
-                using (var call = client.FullDuplexCall(cancellationToken: cts.Token))
-                {
-                    await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
-                        .SetResponseType(PayloadType.COMPRESSABLE)
-                        .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(31415))
-                        .SetPayload(CreateZerosPayload(27182)).Build());
+            var cts = new CancellationTokenSource();
+            using (var call = client.FullDuplexCall(cancellationToken: cts.Token))
+            {
+                await call.RequestStream.WriteAsync(StreamingOutputCallRequest.CreateBuilder()
+                    .SetResponseType(PayloadType.COMPRESSABLE)
+                    .AddResponseParameters(ResponseParameters.CreateBuilder().SetSize(31415))
+                    .SetPayload(CreateZerosPayload(27182)).Build());
 
-                    Assert.IsTrue(await call.ResponseStream.MoveNext());
-                    Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
-                    Assert.AreEqual(31415, call.ResponseStream.Current.Payload.Body.Length);
+                Assert.IsTrue(await call.ResponseStream.MoveNext());
+                Assert.AreEqual(PayloadType.COMPRESSABLE, call.ResponseStream.Current.Payload.Type);
+                Assert.AreEqual(31415, call.ResponseStream.Current.Payload.Body.Length);
 
-                    cts.Cancel();
+                cts.Cancel();
 
-                    try
-                    {
-                        await call.ResponseStream.MoveNext();
-                        Assert.Fail();
-                    }
-                    catch (RpcException e)
-                    {
-                        Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
-                    }
+                try
+                {
+                    await call.ResponseStream.MoveNext();
+                    Assert.Fail();
+                }
+                catch (RpcException e)
+                {
+                    Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
                 }
-                Console.WriteLine("Passed!");
-            }).Wait();
+            }
+            Console.WriteLine("Passed!");
         }
 
         // This is not an official interop test, but it's useful.
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
index f306289cfb..2756ce97aa 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs
@@ -57,7 +57,7 @@ namespace Grpc.IntegrationTesting
         {
             server = new Server();
             server.AddServiceDefinition(TestService.BindService(new TestServiceImpl()));
-            int port = server.AddListeningPort(host, Server.PickUnusedPort, TestCredentials.CreateTestServerCredentials());
+            int port = server.AddPort(host, Server.PickUnusedPort, TestCredentials.CreateTestServerCredentials());
             server.Start();
 
             var options = new List<ChannelOption>
@@ -89,39 +89,39 @@ namespace Grpc.IntegrationTesting
         }
 
         [Test]
-        public void ClientStreaming()
+        public async Task ClientStreaming()
         {
-            InteropClient.RunClientStreaming(client);
+            await InteropClient.RunClientStreamingAsync(client);
         }
 
         [Test]
-        public void ServerStreaming()
+        public async Task ServerStreaming()
         {
-            InteropClient.RunServerStreaming(client);
+            await InteropClient.RunServerStreamingAsync(client);
         }
 
         [Test]
-        public void PingPong()
+        public async Task PingPong()
         {
-            InteropClient.RunPingPong(client);
+            await InteropClient.RunPingPongAsync(client);
         }
 
         [Test]
-        public void EmptyStream()
+        public async Task EmptyStream()
         {
-            InteropClient.RunEmptyStream(client);
+            await InteropClient.RunEmptyStreamAsync(client);
         }
 
         [Test]
-        public void CancelAfterBegin()
+        public async Task CancelAfterBegin()
         {
-            InteropClient.RunCancelAfterBegin(client);
+            await InteropClient.RunCancelAfterBeginAsync(client);
         }
 
         [Test]
-        public void CancelAfterFirstResponse()
+        public async Task CancelAfterFirstResponse()
         {
-            InteropClient.RunCancelAfterFirstResponse(client);
+            await InteropClient.RunCancelAfterFirstResponseAsync(client);
         }
     }
 }
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
index 9475e66c40..bf6947e09d 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropServer.cs
@@ -95,11 +95,11 @@ namespace Grpc.IntegrationTesting
             int port = options.port.Value;
             if (options.useTls)
             {
-                server.AddListeningPort(host, port, TestCredentials.CreateTestServerCredentials());
+                server.AddPort(host, port, TestCredentials.CreateTestServerCredentials());
             }
             else
             {
-                server.AddListeningPort(host, options.port.Value);
+                server.AddPort(host, options.port.Value, ServerCredentials.Insecure);
             }
             Console.WriteLine("Running server on " + string.Format("{0}:{1}", host, port));
             server.Start();
diff --git a/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
new file mode 100644
index 0000000000..1baf40eea2
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs
@@ -0,0 +1,97 @@
+#region Copyright notice and license
+
+// 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.
+
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using grpc.testing;
+using Grpc.Core;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.IntegrationTesting
+{
+    /// <summary>
+    /// Test SSL credentials where server authenticates client 
+    /// and client authenticates the server.
+    /// </summary>
+    public class SslCredentialsTest
+    {
+        string host = "localhost";
+        Server server;
+        Channel channel;
+        TestService.ITestServiceClient client;
+
+        [TestFixtureSetUp]
+        public void Init()
+        {
+            var rootCert = File.ReadAllText(TestCredentials.ClientCertAuthorityPath);
+            var keyCertPair = new KeyCertificatePair(
+                File.ReadAllText(TestCredentials.ServerCertChainPath),
+                File.ReadAllText(TestCredentials.ServerPrivateKeyPath));
+
+            var serverCredentials = new SslServerCredentials(new[] { keyCertPair }, rootCert);
+            var clientCredentials = new SslCredentials(rootCert, keyCertPair);
+
+            server = new Server();
+            server.AddServiceDefinition(TestService.BindService(new TestServiceImpl()));
+            int port = server.AddPort(host, Server.PickUnusedPort, serverCredentials);
+            server.Start();
+
+            var options = new List<ChannelOption>
+            {
+                new ChannelOption(ChannelOptions.SslTargetNameOverride, TestCredentials.DefaultHostOverride)
+            };
+
+            channel = new Channel(host, port, clientCredentials, options);
+            client = TestService.NewClient(channel);
+        }
+
+        [TestFixtureTearDown]
+        public void Cleanup()
+        {
+            channel.Dispose();
+            server.ShutdownAsync().Wait();
+            GrpcEnvironment.Shutdown();
+        }
+
+        [Test]
+        public void AuthenticatedClientAndServer()
+        {
+            var response = client.UnaryCall(SimpleRequest.CreateBuilder().SetResponseSize(10).Build());
+            Assert.AreEqual(10, response.Payload.Body.Length);
+        }
+    }
+}
diff --git a/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs b/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
index 401c50b1ae..54d8587713 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestCredentials.cs
@@ -78,7 +78,7 @@ namespace Grpc.IntegrationTesting
             var keyCertPair = new KeyCertificatePair(
                 File.ReadAllText(ServerCertChainPath),
                 File.ReadAllText(ServerPrivateKeyPath));
-            return new SslServerCredentials(ImmutableList.Create(keyCertPair));
+            return new SslServerCredentials(new[] { keyCertPair });
         }
     }
 }
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index 96d9b23717..ddcd0c2958 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -59,25 +59,25 @@ namespace grpc.testing {
     // client interface
     public interface ITestServiceClient
     {
-      global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncUnaryCall<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncUnaryCall<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
+      AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 
     // server-side interface
     public interface ITestService
     {
-      Task<global::grpc.testing.Empty> EmptyCall(ServerCallContext context, global::grpc.testing.Empty request);
-      Task<global::grpc.testing.SimpleResponse> UnaryCall(ServerCallContext context, global::grpc.testing.SimpleRequest request);
-      Task StreamingOutputCall(ServerCallContext context, global::grpc.testing.StreamingOutputCallRequest request, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream);
-      Task<global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(ServerCallContext context, IAsyncStreamReader<global::grpc.testing.StreamingInputCallRequest> requestStream);
-      Task FullDuplexCall(ServerCallContext context, IAsyncStreamReader<global::grpc.testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream);
-      Task HalfDuplexCall(ServerCallContext context, IAsyncStreamReader<global::grpc.testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream);
+      Task<global::grpc.testing.Empty> EmptyCall(global::grpc.testing.Empty request, ServerCallContext context);
+      Task<global::grpc.testing.SimpleResponse> UnaryCall(global::grpc.testing.SimpleRequest request, ServerCallContext context);
+      Task StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
+      Task<global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::grpc.testing.StreamingInputCallRequest> requestStream, ServerCallContext context);
+      Task FullDuplexCall(IAsyncStreamReader<global::grpc.testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
+      Task HalfDuplexCall(IAsyncStreamReader<global::grpc.testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::grpc.testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
     }
 
     // client stub
@@ -86,44 +86,44 @@ namespace grpc.testing {
       public TestServiceClient(Channel channel) : base(channel)
       {
       }
-      public global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public global::grpc.testing.Empty EmptyCall(global::grpc.testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers);
+        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers, deadline);
         return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncUnaryCall<global::grpc.testing.Empty> EmptyCallAsync(global::grpc.testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers);
+        var call = CreateCall(__ServiceName, __Method_EmptyCall, headers, deadline);
         return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public global::grpc.testing.SimpleResponse UnaryCall(global::grpc.testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers);
+        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers, deadline);
         return Calls.BlockingUnaryCall(call, request, cancellationToken);
       }
-      public Task<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncUnaryCall<global::grpc.testing.SimpleResponse> UnaryCallAsync(global::grpc.testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers);
+        var call = CreateCall(__ServiceName, __Method_UnaryCall, headers, deadline);
         return Calls.AsyncUnaryCall(call, request, cancellationToken);
       }
-      public AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncServerStreamingCall<global::grpc.testing.StreamingOutputCallResponse> StreamingOutputCall(global::grpc.testing.StreamingOutputCallRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_StreamingOutputCall, headers);
+        var call = CreateCall(__ServiceName, __Method_StreamingOutputCall, headers, deadline);
         return Calls.AsyncServerStreamingCall(call, request, cancellationToken);
       }
-      public AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncClientStreamingCall<global::grpc.testing.StreamingInputCallRequest, global::grpc.testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_StreamingInputCall, headers);
+        var call = CreateCall(__ServiceName, __Method_StreamingInputCall, headers, deadline);
         return Calls.AsyncClientStreamingCall(call, cancellationToken);
       }
-      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_FullDuplexCall, headers);
+        var call = CreateCall(__ServiceName, __Method_FullDuplexCall, headers, deadline);
         return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
-      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, CancellationToken cancellationToken = default(CancellationToken))
+      public AsyncDuplexStreamingCall<global::grpc.testing.StreamingOutputCallRequest, global::grpc.testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        var call = CreateCall(__ServiceName, __Method_HalfDuplexCall, headers);
+        var call = CreateCall(__ServiceName, __Method_HalfDuplexCall, headers, deadline);
         return Calls.AsyncDuplexStreamingCall(call, cancellationToken);
       }
     }
diff --git a/src/csharp/Grpc.IntegrationTesting/TestServiceImpl.cs b/src/csharp/Grpc.IntegrationTesting/TestServiceImpl.cs
index 6bd997d1f4..ccf9fe6ced 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestServiceImpl.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestServiceImpl.cs
@@ -46,19 +46,19 @@ namespace grpc.testing
     /// </summary>
     public class TestServiceImpl : TestService.ITestService
     {
-        public Task<Empty> EmptyCall(ServerCallContext context, Empty request)
+        public Task<Empty> EmptyCall(Empty request, ServerCallContext context)
         {
             return Task.FromResult(Empty.DefaultInstance);
         }
 
-        public Task<SimpleResponse> UnaryCall(ServerCallContext context, SimpleRequest request)
+        public Task<SimpleResponse> UnaryCall(SimpleRequest request, ServerCallContext context)
         {
             var response = SimpleResponse.CreateBuilder()
                 .SetPayload(CreateZerosPayload(request.ResponseSize)).Build();
             return Task.FromResult(response);
         }
 
-        public async Task StreamingOutputCall(ServerCallContext context, StreamingOutputCallRequest request, IServerStreamWriter<StreamingOutputCallResponse> responseStream)
+        public async Task StreamingOutputCall(StreamingOutputCallRequest request, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
         {
             foreach (var responseParam in request.ResponseParametersList)
             {
@@ -68,7 +68,7 @@ namespace grpc.testing
             }
         }
 
-        public async Task<StreamingInputCallResponse> StreamingInputCall(ServerCallContext context, IAsyncStreamReader<StreamingInputCallRequest> requestStream)
+        public async Task<StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<StreamingInputCallRequest> requestStream, ServerCallContext context)
         {
             int sum = 0;
             await requestStream.ForEach(async request =>
@@ -78,7 +78,7 @@ namespace grpc.testing
             return StreamingInputCallResponse.CreateBuilder().SetAggregatedPayloadSize(sum).Build();
         }
 
-        public async Task FullDuplexCall(ServerCallContext context, IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream)
+        public async Task FullDuplexCall(IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
         {
             await requestStream.ForEach(async request =>
             {
@@ -91,7 +91,7 @@ namespace grpc.testing
             });
         }
 
-        public async Task HalfDuplexCall(ServerCallContext context, IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream)
+        public async Task HalfDuplexCall(IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
         {
             throw new NotImplementedException();
         }
diff --git a/src/csharp/Grpc.IntegrationTesting/app.config b/src/csharp/Grpc.IntegrationTesting/app.config
index 966b777192..0a82bb4f16 100644
--- a/src/csharp/Grpc.IntegrationTesting/app.config
+++ b/src/csharp/Grpc.IntegrationTesting/app.config
@@ -4,7 +4,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.28.0" newVersion="4.2.28.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.29.0" newVersion="4.2.29.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/csharp/Grpc.IntegrationTesting/packages.config b/src/csharp/Grpc.IntegrationTesting/packages.config
index c74ac75d79..746133a7a5 100644
--- a/src/csharp/Grpc.IntegrationTesting/packages.config
+++ b/src/csharp/Grpc.IntegrationTesting/packages.config
@@ -1,14 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Apis.Auth" version="1.9.1" targetFramework="net45" />
-  <package id="Google.Apis.Core" version="1.9.1" targetFramework="net45" />
+  <package id="BouncyCastle" version="1.7.0" targetFramework="net45" />
+  <package id="Google.Apis.Auth" version="1.9.2" targetFramework="net45" />
+  <package id="Google.Apis.Core" version="1.9.2" targetFramework="net45" />
   <package id="Google.ProtocolBuffers" version="2.4.1.521" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
-  <package id="Microsoft.Bcl" version="1.1.9" targetFramework="net45" />
+  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Async" version="1.0.168" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
-  <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net45" />
+  <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
+  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
   <package id="NUnit" version="2.6.4" targetFramework="net45" />
   <package id="System.Collections.Immutable" version="1.1.36" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.sln b/src/csharp/Grpc.sln
index 705e4fb1c2..0cd8aaef6d 100644
--- a/src/csharp/Grpc.sln
+++ b/src/csharp/Grpc.sln
@@ -34,58 +34,58 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Grpc.HealthCheck.Tests", "G
 EndProject

 Global

 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

-		Debug|x86 = Debug|x86

-		Release|x86 = Release|x86

+		Debug|Any CPU = Debug|Any CPU

+		Release|Any CPU = Release|Any CPU

 	EndGlobalSection

 	GlobalSection(ProjectConfigurationPlatforms) = postSolution

-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|x86.Build.0 = Debug|Any CPU

-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|x86.ActiveCfg = Release|Any CPU

-		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|x86.Build.0 = Release|Any CPU

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|x86.ActiveCfg = Debug|x86

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|x86.Build.0 = Debug|x86

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|x86.ActiveCfg = Release|x86

-		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|x86.Build.0 = Release|x86

-		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|x86.ActiveCfg = Debug|x86

-		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|x86.Build.0 = Debug|x86

-		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|x86.ActiveCfg = Release|x86

-		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|x86.Build.0 = Release|x86

-		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|x86.Build.0 = Debug|Any CPU

-		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|x86.ActiveCfg = Release|Any CPU

-		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|x86.Build.0 = Release|Any CPU

-		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|x86.Build.0 = Debug|Any CPU

-		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|x86.ActiveCfg = Release|Any CPU

-		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|x86.Build.0 = Release|Any CPU

-		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|x86.ActiveCfg = Debug|x86

-		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|x86.Build.0 = Debug|x86

-		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|x86.ActiveCfg = Release|x86

-		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|x86.Build.0 = Release|x86

-		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|x86.Build.0 = Debug|Any CPU

-		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|x86.ActiveCfg = Release|Any CPU

-		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|x86.Build.0 = Release|Any CPU

-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|x86.Build.0 = Debug|Any CPU

-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|x86.ActiveCfg = Release|Any CPU

-		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|x86.Build.0 = Release|Any CPU

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|x86.ActiveCfg = Debug|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|x86.Build.0 = Debug|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|x86.ActiveCfg = Release|x86

-		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|x86.Build.0 = Release|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|x86.ActiveCfg = Debug|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|x86.Build.0 = Debug|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|x86.ActiveCfg = Release|x86

-		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|x86.Build.0 = Release|x86

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|x86.Build.0 = Debug|Any CPU

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|x86.ActiveCfg = Release|Any CPU

-		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|x86.Build.0 = Release|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|x86.ActiveCfg = Debug|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|x86.Build.0 = Debug|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|x86.ActiveCfg = Release|Any CPU

-		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|x86.Build.0 = Release|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|Any CPU.Build.0 = Release|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{3D166931-BA2D-416E-95A3-D36E8F6E90B9}.Release|Any CPU.Build.0 = Release|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{7DC1433E-3225-42C7-B7EA-546D56E27A4B}.Release|Any CPU.Build.0 = Release|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{86EC5CB4-4EA2-40A2-8057-86542A0353BB}.Release|Any CPU.Build.0 = Release|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{A654F3B8-E859-4E6A-B30D-227527DBEF0D}.Release|Any CPU.Build.0 = Release|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{AA5E328A-8835-49D7-98ED-C29F2B3049F0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{AE21D0EE-9A2C-4C15-AB7F-5224EED5B0EA}.Release|Any CPU.Build.0 = Release|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{BF62FE08-373A-43D6-9D73-41CAA38B7011}.Release|Any CPU.Build.0 = Release|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{C61154BA-DD4A-4838-8420-0162A28925E0}.Release|Any CPU.Build.0 = Release|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}.Release|Any CPU.Build.0 = Release|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Debug|Any CPU.Build.0 = Debug|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|Any CPU.ActiveCfg = Release|Any CPU

+		{F8C6D937-C44B-4EE3-A431-B0FBAEACE47D}.Release|Any CPU.Build.0 = Release|Any CPU

 	EndGlobalSection

 	GlobalSection(NestedProjects) = preSolution

 	EndGlobalSection

diff --git a/src/csharp/ext/grpc_csharp_ext.c b/src/csharp/ext/grpc_csharp_ext.c
index 3c0035d453..fc72a5ca71 100644
--- a/src/csharp/ext/grpc_csharp_ext.c
+++ b/src/csharp/ext/grpc_csharp_ext.c
@@ -167,6 +167,29 @@ grpcsharp_metadata_array_add(grpc_metadata_array *array, const char *key,
   array->count++;
 }
 
+GPR_EXPORT gpr_intptr GPR_CALLTYPE
+grpcsharp_metadata_array_count(grpc_metadata_array *array) {
+  return (gpr_intptr) array->count;
+}
+
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_metadata_array_get_key(grpc_metadata_array *array, size_t index) {
+  GPR_ASSERT(index < array->count);
+  return array->metadata[index].key;
+}
+
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_metadata_array_get_value(grpc_metadata_array *array, size_t index) {
+  GPR_ASSERT(index < array->count);
+  return array->metadata[index].value;
+}
+
+GPR_EXPORT gpr_intptr GPR_CALLTYPE
+grpcsharp_metadata_array_get_value_length(grpc_metadata_array *array, size_t index) {
+  GPR_ASSERT(index < array->count);
+  return (gpr_intptr) array->metadata[index].value_length;
+}
+
 /* Move contents of metadata array */
 void grpcsharp_metadata_array_move(grpc_metadata_array *dest,
                                    grpc_metadata_array *src) {
@@ -218,6 +241,12 @@ GPR_EXPORT void GPR_CALLTYPE grpcsharp_batch_context_destroy(grpcsharp_batch_con
   gpr_free(ctx);
 }
 
+GPR_EXPORT const grpc_metadata_array *GPR_CALLTYPE
+grpcsharp_batch_context_recv_initial_metadata(
+    const grpcsharp_batch_context *ctx) {
+  return &(ctx->recv_initial_metadata);
+}
+
 GPR_EXPORT gpr_intptr GPR_CALLTYPE grpcsharp_batch_context_recv_message_length(
     const grpcsharp_batch_context *ctx) {
   if (!ctx->recv_message) {
@@ -260,6 +289,12 @@ grpcsharp_batch_context_recv_status_on_client_details(
   return ctx->recv_status_on_client.status_details;
 }
 
+GPR_EXPORT const grpc_metadata_array *GPR_CALLTYPE
+grpcsharp_batch_context_recv_status_on_client_trailing_metadata(
+    const grpcsharp_batch_context *ctx) {
+  return &(ctx->recv_status_on_client.trailing_metadata);
+}
+
 GPR_EXPORT grpc_call *GPR_CALLTYPE grpcsharp_batch_context_server_rpc_new_call(
     const grpcsharp_batch_context *ctx) {
   return ctx->server_rpc_new.call;
@@ -271,6 +306,24 @@ grpcsharp_batch_context_server_rpc_new_method(
   return ctx->server_rpc_new.call_details.method;
 }
 
+GPR_EXPORT const char *GPR_CALLTYPE
+grpcsharp_batch_context_server_rpc_new_host(
+    const grpcsharp_batch_context *ctx) {
+  return ctx->server_rpc_new.call_details.host;
+}
+
+GPR_EXPORT gpr_timespec GPR_CALLTYPE
+grpcsharp_batch_context_server_rpc_new_deadline(
+    const grpcsharp_batch_context *ctx) {
+  return ctx->server_rpc_new.call_details.deadline;
+}
+
+GPR_EXPORT const grpc_metadata_array *GPR_CALLTYPE
+grpcsharp_batch_context_server_rpc_new_request_metadata(
+    const grpcsharp_batch_context *ctx) {
+  return &(ctx->server_rpc_new.request_metadata);
+}
+
 GPR_EXPORT gpr_int32 GPR_CALLTYPE
 grpcsharp_batch_context_recv_close_on_server_cancelled(
     const grpcsharp_batch_context *ctx) {
@@ -314,8 +367,9 @@ grpcsharp_completion_queue_pluck(grpc_completion_queue *cq, void *tag) {
 /* Channel */
 
 GPR_EXPORT grpc_channel *GPR_CALLTYPE
-grpcsharp_channel_create(const char *target, const grpc_channel_args *args) {
-  return grpc_channel_create(target, args);
+
+grpcsharp_insecure_channel_create(const char *target, const grpc_channel_args *args) {
+  return grpc_insecure_channel_create(target, args);
 }
 
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_channel_destroy(grpc_channel *channel) {
@@ -380,10 +434,20 @@ grpcsharp_channel_args_destroy(grpc_channel_args *args) {
 
 /* Timespec */
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_now(void) { return gpr_now(GPR_CLOCK_REALTIME); }
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_now(gpr_clock_type clock_type) {
+  return gpr_now(clock_type);
+}
+
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_future(gpr_clock_type clock_type) {
+  return gpr_inf_future(clock_type);
+}
+
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_past(gpr_clock_type clock_type) {
+  return gpr_inf_past(clock_type);
+}
 
-GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_inf_future(void) {
-  return gpr_inf_future(GPR_CLOCK_REALTIME);
+GPR_EXPORT gpr_timespec GPR_CALLTYPE gprsharp_convert_clock_type(gpr_timespec t, gpr_clock_type target_clock) {
+  return gpr_convert_clock_type(t, target_clock);
 }
 
 GPR_EXPORT gpr_int32 GPR_CALLTYPE gprsharp_sizeof_timespec(void) {
@@ -402,6 +466,14 @@ grpcsharp_call_cancel_with_status(grpc_call *call, grpc_status_code status,
   return grpc_call_cancel_with_status(call, status, description);
 }
 
+GPR_EXPORT char *GPR_CALLTYPE grpcsharp_call_get_peer(grpc_call *call) {
+  return grpc_call_get_peer(call);
+}
+
+GPR_EXPORT void GPR_CALLTYPE gprsharp_free(void *p) {
+  gpr_free(p);
+}
+
 GPR_EXPORT void GPR_CALLTYPE grpcsharp_call_destroy(grpc_call *call) {
   grpc_call_destroy(call);
 }
@@ -589,15 +661,20 @@ GPR_EXPORT grpc_call_error GPR_CALLTYPE
 grpcsharp_call_send_status_from_server(grpc_call *call,
                                        grpcsharp_batch_context *ctx,
                                        grpc_status_code status_code,
-                                       const char *status_details) {
+                                       const char *status_details,
+                                       grpc_metadata_array *trailing_metadata) {
   /* TODO: don't use magic number */
   grpc_op ops[1];
   ops[0].op = GRPC_OP_SEND_STATUS_FROM_SERVER;
   ops[0].data.send_status_from_server.status = status_code;
   ops[0].data.send_status_from_server.status_details =
       gpr_strdup(status_details);
-  ops[0].data.send_status_from_server.trailing_metadata = NULL;
-  ops[0].data.send_status_from_server.trailing_metadata_count = 0;
+  grpcsharp_metadata_array_move(&(ctx->send_status_from_server.trailing_metadata),
+                                  trailing_metadata);
+  ops[0].data.send_status_from_server.trailing_metadata_count =
+      ctx->send_status_from_server.trailing_metadata.count;
+  ops[0].data.send_status_from_server.trailing_metadata =
+      ctx->send_status_from_server.trailing_metadata.metadata;
   ops[0].flags = 0;
 
   return grpc_call_start_batch(call, ops, sizeof(ops) / sizeof(ops[0]), ctx);
@@ -641,7 +718,7 @@ grpcsharp_server_create(grpc_completion_queue *cq,
 }
 
 GPR_EXPORT gpr_int32 GPR_CALLTYPE
-grpcsharp_server_add_http2_port(grpc_server *server, const char *addr) {
+grpcsharp_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
   return grpc_server_add_http2_port(server, addr);
 }
 
diff --git a/src/node/README.md b/src/node/README.md
index 78781dab14..7d3d8c7fa1 100644
--- a/src/node/README.md
+++ b/src/node/README.md
@@ -85,7 +85,7 @@ An object with factory methods for creating credential objects for clients.
 ServerCredentials
 ```
 
-An object with factory methods fro creating credential objects for servers.
+An object with factory methods for creating credential objects for servers.
 
 [homebrew]:http://brew.sh
 [linuxbrew]:https://github.com/Homebrew/linuxbrew#installation
diff --git a/src/node/ext/call.cc b/src/node/ext/call.cc
index 15c9b2d97d..dc45c8d8ae 100644
--- a/src/node/ext/call.cc
+++ b/src/node/ext/call.cc
@@ -192,7 +192,7 @@ class SendMetadataOp : public Op {
   }
  protected:
   std::string GetTypeString() const {
-    return "send metadata";
+    return "send_metadata";
   }
 };
 
@@ -216,7 +216,7 @@ class SendMessageOp : public Op {
   }
  protected:
   std::string GetTypeString() const {
-    return "send message";
+    return "send_message";
   }
 };
 
@@ -232,7 +232,7 @@ class SendClientCloseOp : public Op {
   }
  protected:
   std::string GetTypeString() const {
-    return "client close";
+    return "client_close";
   }
 };
 
@@ -276,7 +276,7 @@ class SendServerStatusOp : public Op {
   }
  protected:
   std::string GetTypeString() const {
-    return "send status";
+    return "send_status";
   }
 };
 
@@ -453,6 +453,8 @@ void Call::Init(Handle<Object> exports) {
                           NanNew<FunctionTemplate>(StartBatch)->GetFunction());
   NanSetPrototypeTemplate(tpl, "cancel",
                           NanNew<FunctionTemplate>(Cancel)->GetFunction());
+  NanSetPrototypeTemplate(tpl, "getPeer",
+                          NanNew<FunctionTemplate>(GetPeer)->GetFunction());
   NanAssignPersistent(fun_tpl, tpl);
   Handle<Function> ctr = tpl->GetFunction();
   ctr->Set(NanNew("WRITE_BUFFER_HINT"),
@@ -608,5 +610,17 @@ NAN_METHOD(Call::Cancel) {
   NanReturnUndefined();
 }
 
+NAN_METHOD(Call::GetPeer) {
+  NanScope();
+  if (!HasInstance(args.This())) {
+    return NanThrowTypeError("getPeer can only be called on Call objects");
+  }
+  Call *call = ObjectWrap::Unwrap<Call>(args.This());
+  char *peer = grpc_call_get_peer(call->wrapped_call);
+  Handle<Value> peer_value = NanNew(peer);
+  gpr_free(peer);
+  NanReturnValue(peer_value);
+}
+
 }  // namespace node
 }  // namespace grpc
diff --git a/src/node/ext/call.h b/src/node/ext/call.h
index 43142c7091..6acda76197 100644
--- a/src/node/ext/call.h
+++ b/src/node/ext/call.h
@@ -120,6 +120,7 @@ class Call : public ::node::ObjectWrap {
   static NAN_METHOD(New);
   static NAN_METHOD(StartBatch);
   static NAN_METHOD(Cancel);
+  static NAN_METHOD(GetPeer);
   static NanCallback *constructor;
   // Used for typechecking instances of this javascript class
   static v8::Persistent<v8::FunctionTemplate> fun_tpl;
diff --git a/src/node/ext/channel.cc b/src/node/ext/channel.cc
index d37bf763dd..c43b55f115 100644
--- a/src/node/ext/channel.cc
+++ b/src/node/ext/channel.cc
@@ -76,6 +76,8 @@ void Channel::Init(Handle<Object> exports) {
   tpl->InstanceTemplate()->SetInternalFieldCount(1);
   NanSetPrototypeTemplate(tpl, "close",
                           NanNew<FunctionTemplate>(Close)->GetFunction());
+  NanSetPrototypeTemplate(tpl, "getTarget",
+                          NanNew<FunctionTemplate>(GetTarget)->GetFunction());
   NanAssignPersistent(fun_tpl, tpl);
   Handle<Function> ctr = tpl->GetFunction();
   constructor = new NanCallback(ctr);
@@ -103,7 +105,7 @@ NAN_METHOD(Channel::New) {
     NanUtf8String *host = new NanUtf8String(args[0]);
     NanUtf8String *host_override = NULL;
     if (args[1]->IsUndefined()) {
-      wrapped_channel = grpc_channel_create(**host, NULL);
+      wrapped_channel = grpc_insecure_channel_create(**host, NULL);
     } else if (args[1]->IsObject()) {
       grpc_credentials *creds = NULL;
       Handle<Object> args_hash(args[1]->ToObject()->Clone());
@@ -148,7 +150,7 @@ NAN_METHOD(Channel::New) {
         }
       }
       if (creds == NULL) {
-        wrapped_channel = grpc_channel_create(**host, &channel_args);
+        wrapped_channel = grpc_insecure_channel_create(**host, &channel_args);
       } else {
         wrapped_channel =
             grpc_secure_channel_create(creds, **host, &channel_args);
@@ -185,5 +187,14 @@ NAN_METHOD(Channel::Close) {
   NanReturnUndefined();
 }
 
+NAN_METHOD(Channel::GetTarget) {
+  NanScope();
+  if (!HasInstance(args.This())) {
+    return NanThrowTypeError("getTarget can only be called on Channel objects");
+  }
+  Channel *channel = ObjectWrap::Unwrap<Channel>(args.This());
+  NanReturnValue(NanNew(grpc_channel_get_target(channel->wrapped_channel)));
+}
+
 }  // namespace node
 }  // namespace grpc
diff --git a/src/node/ext/channel.h b/src/node/ext/channel.h
index b3aa0f700f..6725ebb03f 100644
--- a/src/node/ext/channel.h
+++ b/src/node/ext/channel.h
@@ -66,6 +66,7 @@ class Channel : public ::node::ObjectWrap {
 
   static NAN_METHOD(New);
   static NAN_METHOD(Close);
+  static NAN_METHOD(GetTarget);
   static NanCallback *constructor;
   static v8::Persistent<v8::FunctionTemplate> fun_tpl;
 
diff --git a/src/node/ext/credentials.cc b/src/node/ext/credentials.cc
index 34872017ea..d6cff0631d 100644
--- a/src/node/ext/credentials.cc
+++ b/src/node/ext/credentials.cc
@@ -79,8 +79,6 @@ void Credentials::Init(Handle<Object> exports) {
            NanNew<FunctionTemplate>(CreateComposite)->GetFunction());
   ctr->Set(NanNew("createGce"),
            NanNew<FunctionTemplate>(CreateGce)->GetFunction());
-  ctr->Set(NanNew("createFake"),
-           NanNew<FunctionTemplate>(CreateFake)->GetFunction());
   ctr->Set(NanNew("createIam"),
            NanNew<FunctionTemplate>(CreateIam)->GetFunction());
   constructor = new NanCallback(ctr);
@@ -180,11 +178,6 @@ NAN_METHOD(Credentials::CreateGce) {
   NanReturnValue(WrapStruct(grpc_compute_engine_credentials_create()));
 }
 
-NAN_METHOD(Credentials::CreateFake) {
-  NanScope();
-  NanReturnValue(WrapStruct(grpc_fake_transport_security_credentials_create()));
-}
-
 NAN_METHOD(Credentials::CreateIam) {
   NanScope();
   if (!args[0]->IsString()) {
diff --git a/src/node/ext/server.cc b/src/node/ext/server.cc
index 34cde9ffab..8554fce777 100644
--- a/src/node/ext/server.cc
+++ b/src/node/ext/server.cc
@@ -108,7 +108,7 @@ class NewCallOp : public Op {
 
  protected:
   std::string GetTypeString() const {
-    return "new call";
+    return "new_call";
   }
 };
 
diff --git a/src/node/ext/server_credentials.cc b/src/node/ext/server_credentials.cc
index 709105c72f..c4a93a6465 100644
--- a/src/node/ext/server_credentials.cc
+++ b/src/node/ext/server_credentials.cc
@@ -73,8 +73,6 @@ void ServerCredentials::Init(Handle<Object> exports) {
   Handle<Function> ctr = tpl->GetFunction();
   ctr->Set(NanNew("createSsl"),
            NanNew<FunctionTemplate>(CreateSsl)->GetFunction());
-  ctr->Set(NanNew("createFake"),
-           NanNew<FunctionTemplate>(CreateFake)->GetFunction());
   constructor = new NanCallback(ctr);
   exports->Set(NanNew("ServerCredentials"), ctr);
 }
@@ -146,11 +144,5 @@ NAN_METHOD(ServerCredentials::CreateSsl) {
       grpc_ssl_server_credentials_create(root_certs, &key_cert_pair, 1, 0)));
 }
 
-NAN_METHOD(ServerCredentials::CreateFake) {
-  NanScope();
-  NanReturnValue(
-      WrapStruct(grpc_fake_transport_security_server_credentials_create()));
-}
-
 }  // namespace node
 }  // namespace grpc
diff --git a/src/node/ext/server_credentials.h b/src/node/ext/server_credentials.h
index aaa7ef297a..80747504a1 100644
--- a/src/node/ext/server_credentials.h
+++ b/src/node/ext/server_credentials.h
@@ -63,7 +63,6 @@ class ServerCredentials : public ::node::ObjectWrap {
 
   static NAN_METHOD(New);
   static NAN_METHOD(CreateSsl);
-  static NAN_METHOD(CreateFake);
   static NanCallback *constructor;
   // Used for typechecking instances of this javascript class
   static v8::Persistent<v8::FunctionTemplate> fun_tpl;
diff --git a/src/node/ext/timeval.cc b/src/node/ext/timeval.cc
index 60de4d816d..bf68513c48 100644
--- a/src/node/ext/timeval.cc
+++ b/src/node/ext/timeval.cc
@@ -52,6 +52,7 @@ gpr_timespec MillisecondsToTimespec(double millis) {
 }
 
 double TimespecToMilliseconds(gpr_timespec timespec) {
+  timespec = gpr_convert_clock_type(timespec, GPR_CLOCK_REALTIME);
   if (gpr_time_cmp(timespec, gpr_inf_future(GPR_CLOCK_REALTIME)) == 0) {
     return std::numeric_limits<double>::infinity();
   } else if (gpr_time_cmp(timespec, gpr_inf_past(GPR_CLOCK_REALTIME)) == 0) {
diff --git a/src/node/src/client.js b/src/node/src/client.js
index b7bad949d4..d89c656c07 100644
--- a/src/node/src/client.js
+++ b/src/node/src/client.js
@@ -47,6 +47,7 @@ var Readable = stream.Readable;
 var Writable = stream.Writable;
 var Duplex = stream.Duplex;
 var util = require('util');
+var version = require('../package.json').version;
 
 util.inherits(ClientWritableStream, Writable);
 
@@ -187,6 +188,19 @@ ClientWritableStream.prototype.cancel = cancel;
 ClientDuplexStream.prototype.cancel = cancel;
 
 /**
+ * Get the endpoint this call/stream is connected to.
+ * @return {string} The URI of the endpoint
+ */
+function getPeer() {
+  /* jshint validthis: true */
+  return this.call.getPeer();
+}
+
+ClientReadableStream.prototype.getPeer = getPeer;
+ClientWritableStream.prototype.getPeer = getPeer;
+ClientDuplexStream.prototype.getPeer = getPeer;
+
+/**
  * Get a function that can make unary requests to the specified method.
  * @param {string} method The name of the method to request
  * @param {function(*):Buffer} serialize The serialization function for inputs
@@ -222,6 +236,9 @@ function makeUnaryRequestFunction(method, serialize, deserialize) {
     emitter.cancel = function cancel() {
       call.cancel();
     };
+    emitter.getPeer = function getPeer() {
+      return call.getPeer();
+    };
     this.updateMetadata(this.auth_uri, metadata, function(error, metadata) {
       if (error) {
         call.cancel();
@@ -517,9 +534,12 @@ function makeClientConstructor(methods, serviceName) {
         callback(null, metadata);
       };
     }
-
-    this.server_address = address.replace(/\/$/, '');
+    if (!options) {
+      options = {};
+    }
+    options['grpc.primary_user_agent'] = 'grpc-node/' + version;
     this.channel = new grpc.Channel(address, options);
+    this.server_address = address.replace(/\/$/, '');
     this.auth_uri = this.server_address + '/' + serviceName;
     this.updateMetadata = updateMetadata;
   }
diff --git a/src/node/src/server.js b/src/node/src/server.js
index 0a3a0031bd..e876313d96 100644
--- a/src/node/src/server.js
+++ b/src/node/src/server.js
@@ -374,6 +374,19 @@ ServerDuplexStream.prototype._write = _write;
 ServerDuplexStream.prototype.sendMetadata = sendMetadata;
 
 /**
+ * Get the endpoint this call/stream is connected to.
+ * @return {string} The URI of the endpoint
+ */
+function getPeer() {
+  /* jshint validthis: true */
+  return this.call.getPeer();
+}
+
+ServerReadableStream.prototype.getPeer = getPeer;
+ServerWritableStream.prototype.getPeer = getPeer;
+ServerDuplexStream.prototype.getPeer = getPeer;
+
+/**
  * Fully handle a unary call
  * @param {grpc.Call} call The call to handle
  * @param {Object} handler Request handler object for the method that was called
@@ -389,6 +402,9 @@ function handleUnary(call, handler, metadata) {
       call.startBatch(batch, function() {});
     }
   };
+  emitter.getPeer = function() {
+    return call.getPeer();
+  };
   emitter.on('error', function(error) {
     handleError(call, error);
   });
@@ -544,7 +560,7 @@ function Server(options) {
       if (err) {
         return;
       }
-      var details = event['new call'];
+      var details = event.new_call;
       var call = details.call;
       var method = details.method;
       var metadata = details.metadata;
diff --git a/src/node/test/call_test.js b/src/node/test/call_test.js
index 98158ffff3..942c31ac68 100644
--- a/src/node/test/call_test.js
+++ b/src/node/test/call_test.js
@@ -132,7 +132,7 @@ describe('call', function() {
                                                     'key2': ['value2']};
         call.startBatch(batch, function(err, resp) {
           assert.ifError(err);
-          assert.deepEqual(resp, {'send metadata': true});
+          assert.deepEqual(resp, {'send_metadata': true});
           done();
         });
       });
@@ -147,7 +147,7 @@ describe('call', function() {
         };
         call.startBatch(batch, function(err, resp) {
           assert.ifError(err);
-          assert.deepEqual(resp, {'send metadata': true});
+          assert.deepEqual(resp, {'send_metadata': true});
           done();
         });
       });
@@ -184,4 +184,10 @@ describe('call', function() {
       });
     });
   });
+  describe('getPeer', function() {
+    it('should return a string', function() {
+      var call = new grpc.Call(channel, 'method', getDeadline(1));
+      assert.strictEqual(typeof call.getPeer(), 'string');
+    });
+  });
 });
diff --git a/src/node/test/channel_test.js b/src/node/test/channel_test.js
index 33200c99ee..3e61d3bbc6 100644
--- a/src/node/test/channel_test.js
+++ b/src/node/test/channel_test.js
@@ -87,4 +87,10 @@ describe('channel', function() {
       });
     });
   });
+  describe('getTarget', function() {
+    it('should return a string', function() {
+      var channel = new grpc.Channel('localhost', {});
+      assert.strictEqual(typeof channel.getTarget(), 'string');
+    });
+  });
 });
diff --git a/src/node/test/end_to_end_test.js b/src/node/test/end_to_end_test.js
index 667852f382..5d3baf823d 100644
--- a/src/node/test/end_to_end_test.js
+++ b/src/node/test/end_to_end_test.js
@@ -85,37 +85,37 @@ describe('end-to-end', function() {
     call.startBatch(client_batch, function(err, response) {
       assert.ifError(err);
       assert.deepEqual(response, {
-        'send metadata': true,
-        'client close': true,
-        'metadata': {},
-        'status': {
-          'code': grpc.status.OK,
-          'details': status_text,
-          'metadata': {}
+        send_metadata: true,
+        client_close: true,
+        metadata: {},
+        status: {
+          code: grpc.status.OK,
+          details: status_text,
+          metadata: {}
         }
       });
       done();
     });
 
     server.requestCall(function(err, call_details) {
-      var new_call = call_details['new call'];
+      var new_call = call_details.new_call;
       assert.notEqual(new_call, null);
       var server_call = new_call.call;
       assert.notEqual(server_call, null);
       var server_batch = {};
       server_batch[grpc.opType.SEND_INITIAL_METADATA] = {};
       server_batch[grpc.opType.SEND_STATUS_FROM_SERVER] = {
-        'metadata': {},
-        'code': grpc.status.OK,
-        'details': status_text
+        metadata: {},
+        code: grpc.status.OK,
+        details: status_text
       };
       server_batch[grpc.opType.RECV_CLOSE_ON_SERVER] = true;
       server_call.startBatch(server_batch, function(err, response) {
         assert.ifError(err);
         assert.deepEqual(response, {
-          'send metadata': true,
-          'send status': true,
-          'cancelled': false
+          send_metadata: true,
+          send_status: true,
+          cancelled: false
         });
        done();
       });
@@ -131,7 +131,7 @@ describe('end-to-end', function() {
                              Infinity);
     var client_batch = {};
     client_batch[grpc.opType.SEND_INITIAL_METADATA] = {
-      'client_key': ['client_value']
+      client_key: ['client_value']
     };
     client_batch[grpc.opType.SEND_CLOSE_FROM_CLIENT] = true;
     client_batch[grpc.opType.RECV_INITIAL_METADATA] = true;
@@ -139,18 +139,18 @@ describe('end-to-end', function() {
     call.startBatch(client_batch, function(err, response) {
       assert.ifError(err);
       assert.deepEqual(response,{
-        'send metadata': true,
-        'client close': true,
+        send_metadata: true,
+        client_close: true,
         metadata: {server_key: ['server_value']},
-        status: {'code': grpc.status.OK,
-                 'details': status_text,
-                 'metadata': {}}
+        status: {code: grpc.status.OK,
+                 details: status_text,
+                 metadata: {}}
       });
       done();
     });
 
     server.requestCall(function(err, call_details) {
-      var new_call = call_details['new call'];
+      var new_call = call_details.new_call;
       assert.notEqual(new_call, null);
       assert.strictEqual(new_call.metadata.client_key[0],
                          'client_value');
@@ -158,20 +158,20 @@ describe('end-to-end', function() {
       assert.notEqual(server_call, null);
       var server_batch = {};
       server_batch[grpc.opType.SEND_INITIAL_METADATA] = {
-        'server_key': ['server_value']
+        server_key: ['server_value']
       };
       server_batch[grpc.opType.SEND_STATUS_FROM_SERVER] = {
-        'metadata': {},
-        'code': grpc.status.OK,
-        'details': status_text
+        metadata: {},
+        code: grpc.status.OK,
+        details: status_text
       };
       server_batch[grpc.opType.RECV_CLOSE_ON_SERVER] = true;
       server_call.startBatch(server_batch, function(err, response) {
         assert.ifError(err);
         assert.deepEqual(response, {
-          'send metadata': true,
-          'send status': true,
-          'cancelled': false
+          send_metadata: true,
+          send_status: true,
+          cancelled: false
         });
        done();
       });
@@ -196,19 +196,19 @@ describe('end-to-end', function() {
     client_batch[grpc.opType.RECV_STATUS_ON_CLIENT] = true;
     call.startBatch(client_batch, function(err, response) {
       assert.ifError(err);
-      assert(response['send metadata']);
-      assert(response['client close']);
+      assert(response.send_metadata);
+      assert(response.client_close);
       assert.deepEqual(response.metadata, {});
-      assert(response['send message']);
+      assert(response.send_message);
       assert.strictEqual(response.read.toString(), reply_text);
-      assert.deepEqual(response.status, {'code': grpc.status.OK,
-                                         'details': status_text,
-                                         'metadata': {}});
+      assert.deepEqual(response.status, {code: grpc.status.OK,
+                                         details: status_text,
+                                         metadata: {}});
       done();
     });
 
     server.requestCall(function(err, call_details) {
-      var new_call = call_details['new call'];
+      var new_call = call_details.new_call;
       assert.notEqual(new_call, null);
       var server_call = new_call.call;
       assert.notEqual(server_call, null);
@@ -217,18 +217,18 @@ describe('end-to-end', function() {
       server_batch[grpc.opType.RECV_MESSAGE] = true;
       server_call.startBatch(server_batch, function(err, response) {
         assert.ifError(err);
-        assert(response['send metadata']);
+        assert(response.send_metadata);
         assert.strictEqual(response.read.toString(), req_text);
         var response_batch = {};
         response_batch[grpc.opType.SEND_MESSAGE] = new Buffer(reply_text);
         response_batch[grpc.opType.SEND_STATUS_FROM_SERVER] = {
-          'metadata': {},
-          'code': grpc.status.OK,
-          'details': status_text
+          metadata: {},
+          code: grpc.status.OK,
+          details: status_text
         };
         response_batch[grpc.opType.RECV_CLOSE_ON_SERVER] = true;
         server_call.startBatch(response_batch, function(err, response) {
-          assert(response['send status']);
+          assert(response.send_status);
           assert(!response.cancelled);
           done();
         });
@@ -251,9 +251,9 @@ describe('end-to-end', function() {
     call.startBatch(client_batch, function(err, response) {
       assert.ifError(err);
       assert.deepEqual(response, {
-        'send metadata': true,
-        'send message': true,
-        'metadata': {}
+        send_metadata: true,
+        send_message: true,
+        metadata: {}
       });
       var req2_batch = {};
       req2_batch[grpc.opType.SEND_MESSAGE] = new Buffer(requests[1]);
@@ -262,12 +262,12 @@ describe('end-to-end', function() {
       call.startBatch(req2_batch, function(err, resp) {
         assert.ifError(err);
         assert.deepEqual(resp, {
-          'send message': true,
-          'client close': true,
-          'status': {
-            'code': grpc.status.OK,
-            'details': status_text,
-            'metadata': {}
+          send_message: true,
+          client_close: true,
+          status: {
+            code: grpc.status.OK,
+            details: status_text,
+            metadata: {}
           }
         });
         done();
@@ -275,7 +275,7 @@ describe('end-to-end', function() {
     });
 
     server.requestCall(function(err, call_details) {
-      var new_call = call_details['new call'];
+      var new_call = call_details.new_call;
       assert.notEqual(new_call, null);
       var server_call = new_call.call;
       assert.notEqual(server_call, null);
@@ -284,7 +284,7 @@ describe('end-to-end', function() {
       server_batch[grpc.opType.RECV_MESSAGE] = true;
       server_call.startBatch(server_batch, function(err, response) {
         assert.ifError(err);
-        assert(response['send metadata']);
+        assert(response.send_metadata);
         assert.strictEqual(response.read.toString(), requests[0]);
         var snd_batch = {};
         snd_batch[grpc.opType.RECV_MESSAGE] = true;
@@ -294,13 +294,13 @@ describe('end-to-end', function() {
           var end_batch = {};
           end_batch[grpc.opType.RECV_CLOSE_ON_SERVER] = true;
           end_batch[grpc.opType.SEND_STATUS_FROM_SERVER] = {
-            'metadata': {},
-            'code': grpc.status.OK,
-            'details': status_text
+            metadata: {},
+            code: grpc.status.OK,
+            details: status_text
           };
           server_call.startBatch(end_batch, function(err, response) {
             assert.ifError(err);
-            assert(response['send status']);
+            assert(response.send_status);
             assert(!response.cancelled);
             done();
           });
diff --git a/src/node/test/server_test.js b/src/node/test/server_test.js
index 7cb34fa0cb..9c7bb465aa 100644
--- a/src/node/test/server_test.js
+++ b/src/node/test/server_test.js
@@ -34,6 +34,8 @@
 'use strict';
 
 var assert = require('assert');
+var fs = require('fs');
+var path = require('path');
 var grpc = require('bindings')('grpc.node');
 
 describe('server', function() {
@@ -67,9 +69,13 @@ describe('server', function() {
     before(function() {
       server = new grpc.Server();
     });
-    it('should bind to an unused port with fake credentials', function() {
+    it('should bind to an unused port with ssl credentials', function() {
       var port;
-      var creds = grpc.ServerCredentials.createFake();
+      var key_path = path.join(__dirname, '../test/data/server1.key');
+      var pem_path = path.join(__dirname, '../test/data/server1.pem');
+      var key_data = fs.readFileSync(key_path);
+      var pem_data = fs.readFileSync(pem_path);
+      var creds = grpc.ServerCredentials.createSsl(null, key_data, pem_data);
       assert.doesNotThrow(function() {
         port = server.addSecureHttp2Port('0.0.0.0:0', creds);
       });
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index 18178e49e4..9005cbd505 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -258,6 +258,16 @@ describe('Echo metadata', function() {
     });
     call.end();
   });
+  it('shows the correct user-agent string', function(done) {
+    var version = require('../package.json').version;
+    var call = client.unary({}, function(err, data) {
+      assert.ifError(err);
+    }, {key: ['value']});
+    call.on('metadata', function(metadata) {
+      assert(_.startsWith(metadata['user-agent'], 'grpc-node/' + version));
+      done();
+    });
+  });
 });
 describe('Other conditions', function() {
   var client;
@@ -334,6 +344,9 @@ describe('Other conditions', function() {
   after(function() {
     server.shutdown();
   });
+  it('channel.getTarget should be available', function() {
+    assert.strictEqual(typeof client.channel.getTarget(), 'string');
+  });
   describe('Server recieving bad input', function() {
     var misbehavingClient;
     var badArg = new Buffer([0xFF]);
@@ -539,6 +552,43 @@ describe('Other conditions', function() {
       });
     });
   });
+  describe('call.getPeer should return the peer', function() {
+    it('for a unary call', function(done) {
+      var call = client.unary({error: false}, function(err, data) {
+        assert.ifError(err);
+        done();
+      });
+      assert.strictEqual(typeof call.getPeer(), 'string');
+    });
+    it('for a client stream call', function(done) {
+      var call = client.clientStream(function(err, data) {
+        assert.ifError(err);
+        done();
+      });
+      assert.strictEqual(typeof call.getPeer(), 'string');
+      call.write({error: false});
+      call.end();
+    });
+    it('for a server stream call', function(done) {
+      var call = client.serverStream({error: false});
+      assert.strictEqual(typeof call.getPeer(), 'string');
+      call.on('data', function(){});
+      call.on('status', function(status) {
+        assert.strictEqual(status.code, grpc.status.OK);
+        done();
+      });
+    });
+    it('for a bidi stream call', function(done) {
+      var call = client.bidiStream();
+      assert.strictEqual(typeof call.getPeer(), 'string');
+      call.write({error: false});
+      call.end();
+      call.on('data', function(){});
+      call.on('status', function(status) {
+        done();
+      });
+    });
+  });
 });
 describe('Cancelling surface client', function() {
   var client;
diff --git a/src/objective-c/GRPCClient/private/GRPCUnsecuredChannel.m b/src/objective-c/GRPCClient/private/GRPCUnsecuredChannel.m
index d27f7ca565..8518f78c5b 100644
--- a/src/objective-c/GRPCClient/private/GRPCUnsecuredChannel.m
+++ b/src/objective-c/GRPCClient/private/GRPCUnsecuredChannel.m
@@ -38,7 +38,7 @@
 @implementation GRPCUnsecuredChannel
 
 - (instancetype)initWithHost:(NSString *)host {
-  return (self = [super initWithChannel:grpc_channel_create(host.UTF8String, NULL)]);
+  return (self = [super initWithChannel:grpc_insecure_channel_create(host.UTF8String, NULL)]);
 }
 
 @end
diff --git a/src/php/composer.json b/src/php/composer.json
index b0115bdadd..2d0fe0c87a 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "grpc/grpc",
   "description": "gRPC library for PHP",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "homepage": "http://grpc.io",
   "license": "BSD-3-Clause",
   "repositories": [
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index b67bae7568..1f76c7359d 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -473,6 +473,16 @@ cleanup:
 }
 
 /**
+ * Get the endpoint this call/stream is connected to
+ * @return string The URI of the endpoint
+ */
+PHP_METHOD(Call, getPeer) {
+  wrapped_grpc_call *call =
+      (wrapped_grpc_call *)zend_object_store_get_object(getThis() TSRMLS_CC);
+  RETURN_STRING(grpc_call_get_peer(call->wrapped), 1);
+}
+
+/**
  * Cancel the call. This will cause the call to end with STATUS_CANCELLED if it
  * has not already ended with another status.
  */
@@ -485,7 +495,9 @@ PHP_METHOD(Call, cancel) {
 static zend_function_entry call_methods[] = {
     PHP_ME(Call, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
     PHP_ME(Call, startBatch, NULL, ZEND_ACC_PUBLIC)
-    PHP_ME(Call, cancel, NULL, ZEND_ACC_PUBLIC) PHP_FE_END};
+    PHP_ME(Call, getPeer, NULL, ZEND_ACC_PUBLIC)
+    PHP_ME(Call, cancel, NULL, ZEND_ACC_PUBLIC)
+    PHP_FE_END};
 
 void grpc_init_call(TSRMLS_D) {
   zend_class_entry ce;
diff --git a/src/php/ext/grpc/channel.c b/src/php/ext/grpc/channel.c
index b8262db162..7d8a6f87ab 100644
--- a/src/php/ext/grpc/channel.c
+++ b/src/php/ext/grpc/channel.c
@@ -152,7 +152,7 @@ PHP_METHOD(Channel, __construct) {
   override = target;
   override_len = target_length;
   if (args_array == NULL) {
-    channel->wrapped = grpc_channel_create(target, NULL);
+    channel->wrapped = grpc_insecure_channel_create(target, NULL);
   } else {
     array_hash = Z_ARRVAL_P(args_array);
     if (zend_hash_find(array_hash, "credentials", sizeof("credentials"),
@@ -182,7 +182,7 @@ PHP_METHOD(Channel, __construct) {
     }
     php_grpc_read_args_array(args_array, &args);
     if (creds == NULL) {
-      channel->wrapped = grpc_channel_create(target, &args);
+      channel->wrapped = grpc_insecure_channel_create(target, &args);
     } else {
       gpr_log(GPR_DEBUG, "Initialized secure channel");
       channel->wrapped =
@@ -195,6 +195,16 @@ PHP_METHOD(Channel, __construct) {
 }
 
 /**
+ * Get the endpoint this call/stream is connected to
+ * @return string The URI of the endpoint
+ */
+PHP_METHOD(Channel, getTarget) {
+  wrapped_grpc_channel *channel =
+      (wrapped_grpc_channel *)zend_object_store_get_object(getThis() TSRMLS_CC);
+  RETURN_STRING(grpc_channel_get_target(channel->wrapped), 1);
+}
+
+/**
  * Close the channel
  */
 PHP_METHOD(Channel, close) {
@@ -208,7 +218,9 @@ PHP_METHOD(Channel, close) {
 
 static zend_function_entry channel_methods[] = {
     PHP_ME(Channel, __construct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
-    PHP_ME(Channel, close, NULL, ZEND_ACC_PUBLIC) PHP_FE_END};
+    PHP_ME(Channel, getTarget, NULL, ZEND_ACC_PUBLIC)
+    PHP_ME(Channel, close, NULL, ZEND_ACC_PUBLIC)
+    PHP_FE_END};
 
 void grpc_init_channel(TSRMLS_D) {
   zend_class_entry ce;
diff --git a/src/php/ext/grpc/credentials.c b/src/php/ext/grpc/credentials.c
index a262b9981f..01cb94e3aa 100644
--- a/src/php/ext/grpc/credentials.c
+++ b/src/php/ext/grpc/credentials.c
@@ -175,23 +175,12 @@ PHP_METHOD(Credentials, createGce) {
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
-/**
- * Create fake credentials. Only to be used for testing.
- * @return Credentials The new fake credentials object
- */
-PHP_METHOD(Credentials, createFake) {
-  grpc_credentials *creds = grpc_fake_transport_security_credentials_create();
-  zval *creds_object = grpc_php_wrap_credentials(creds);
-  RETURN_DESTROY_ZVAL(creds_object);
-}
-
 static zend_function_entry credentials_methods[] = {
     PHP_ME(Credentials, createDefault, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
     PHP_ME(Credentials, createSsl, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
     PHP_ME(Credentials, createComposite, NULL,
            ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
     PHP_ME(Credentials, createGce, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-    PHP_ME(Credentials, createFake, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
     PHP_FE_END};
 
 void grpc_init_credentials(TSRMLS_D) {
diff --git a/src/php/ext/grpc/server_credentials.c b/src/php/ext/grpc/server_credentials.c
index ec1c3c4f52..e9183c4598 100644
--- a/src/php/ext/grpc/server_credentials.c
+++ b/src/php/ext/grpc/server_credentials.c
@@ -123,21 +123,8 @@ PHP_METHOD(ServerCredentials, createSsl) {
   RETURN_DESTROY_ZVAL(creds_object);
 }
 
-/**
- * Create fake credentials. Only to be used for testing.
- * @return ServerCredentials The new fake credentials object
- */
-PHP_METHOD(ServerCredentials, createFake) {
-  grpc_server_credentials *creds =
-      grpc_fake_transport_security_server_credentials_create();
-  zval *creds_object = grpc_php_wrap_server_credentials(creds);
-  RETURN_DESTROY_ZVAL(creds_object);
-}
-
 static zend_function_entry server_credentials_methods[] = {
     PHP_ME(ServerCredentials, createSsl, NULL,
-           ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-    PHP_ME(ServerCredentials, createFake, NULL,
            ZEND_ACC_PUBLIC | ZEND_ACC_STATIC) PHP_FE_END};
 
 void grpc_init_server_credentials(TSRMLS_D) {
diff --git a/src/php/lib/Grpc/AbstractCall.php b/src/php/lib/Grpc/AbstractCall.php
index 5b28417a0d..35057224f8 100644
--- a/src/php/lib/Grpc/AbstractCall.php
+++ b/src/php/lib/Grpc/AbstractCall.php
@@ -68,6 +68,13 @@ abstract class AbstractCall {
   }
 
   /**
+   * @return string The URI of the endpoint.
+   */
+  public function getPeer() {
+    return $this->call->getPeer();
+  }
+
+  /**
    * Cancels the call
    */
   public function cancel() {
diff --git a/src/php/lib/Grpc/BaseStub.php b/src/php/lib/Grpc/BaseStub.php
index 48c00977eb..a0c677908c 100755
--- a/src/php/lib/Grpc/BaseStub.php
+++ b/src/php/lib/Grpc/BaseStub.php
@@ -60,11 +60,21 @@ class BaseStub {
       }
       unset($opts['update_metadata']);
     }
-         
+    $package_config = json_decode(
+        file_get_contents(dirname(__FILE__) . '/../../composer.json'), true);
+    $opts['grpc.primary_user_agent'] =
+        'grpc-php/' . $package_config['version'];
     $this->channel = new Channel($hostname, $opts);
   }
 
   /**
+   * @return string The URI of the endpoint.
+   */
+  public function getTarget() {
+    return $this->channel->getTarget();
+  }
+
+  /**
    * Close the communication channel associated with this stub
    */
   public function close() {
diff --git a/src/php/tests/generated_code/AbstractGeneratedCodeTest.php b/src/php/tests/generated_code/AbstractGeneratedCodeTest.php
index 6102aaf0a8..8b7e67f57c 100644
--- a/src/php/tests/generated_code/AbstractGeneratedCodeTest.php
+++ b/src/php/tests/generated_code/AbstractGeneratedCodeTest.php
@@ -43,7 +43,9 @@ abstract class AbstractGeneratedCodeTest extends PHPUnit_Framework_TestCase {
     $div_arg = new math\DivArgs();
     $div_arg->setDividend(7);
     $div_arg->setDivisor(4);
-    list($response, $status) = self::$client->Div($div_arg)->wait();
+    $call = self::$client->Div($div_arg);
+    $this->assertTrue(is_string($call->getPeer()));
+    list($response, $status) = $call->wait();
     $this->assertSame(1, $response->getQuotient());
     $this->assertSame(3, $response->getRemainder());
     $this->assertSame(\Grpc\STATUS_OK, $status->code);
@@ -53,6 +55,7 @@ abstract class AbstractGeneratedCodeTest extends PHPUnit_Framework_TestCase {
     $fib_arg = new math\FibArgs();
     $fib_arg->setLimit(7);
     $call = self::$client->Fib($fib_arg);
+    $this->assertTrue(is_string($call->getPeer()));
     $result_array = iterator_to_array($call->responses());
     $extract_num = function($num){
       return $num->getNum();
@@ -72,6 +75,7 @@ abstract class AbstractGeneratedCodeTest extends PHPUnit_Framework_TestCase {
       }
     };
     $call = self::$client->Sum($num_iter());
+    $this->assertTrue(is_string($call->getPeer()));
     list($response, $status) = $call->wait();
     $this->assertSame(21, $response->getNum());
     $this->assertSame(\Grpc\STATUS_OK, $status->code);
@@ -79,6 +83,7 @@ abstract class AbstractGeneratedCodeTest extends PHPUnit_Framework_TestCase {
 
   public function testBidiStreaming() {
     $call = self::$client->DivMany();
+    $this->assertTrue(is_string($call->getPeer()));
     for ($i = 0; $i < 7; $i++) {
       $div_arg = new math\DivArgs();
       $div_arg->setDividend(2 * $i + 1);
diff --git a/src/php/tests/interop/interop_client.php b/src/php/tests/interop/interop_client.php
index 2041577557..44e6242c29 100755
--- a/src/php/tests/interop/interop_client.php
+++ b/src/php/tests/interop/interop_client.php
@@ -332,10 +332,11 @@ if (in_array($args['test_case'], array(
   $opts['update_metadata'] = $auth->getUpdateMetadataFunc();
 }
 
-$stub = new grpc\testing\TestServiceClient(
-    new Grpc\BaseStub(
-        $server_address,
-        $opts));
+$internal_stub = new Grpc\BaseStub($server_address, $opts);
+hardAssert(is_string($internal_stub->getTarget()),
+           'Unexpected target URI value');
+
+$stub = new grpc\testing\TestServiceClient($internal_stub);
 
 echo "Connecting to $server_address\n";
 echo "Running test case $args[test_case]\n";
diff --git a/src/php/tests/unit_tests/CallTest.php b/src/php/tests/unit_tests/CallTest.php
index 77a2d86ce4..caff15ee11 100755
--- a/src/php/tests/unit_tests/CallTest.php
+++ b/src/php/tests/unit_tests/CallTest.php
@@ -79,4 +79,8 @@ class CallTest extends PHPUnit_Framework_TestCase{
     $result = $this->call->startBatch($batch);
     $this->assertTrue($result->send_metadata);
   }
+
+  public function testGetPeer() {
+    $this->assertTrue(is_string($this->call->getPeer()));
+  }
 }
diff --git a/src/php/tests/unit_tests/EndToEndTest.php b/src/php/tests/unit_tests/EndToEndTest.php
index 2980dca4a7..27e27cdfdf 100755
--- a/src/php/tests/unit_tests/EndToEndTest.php
+++ b/src/php/tests/unit_tests/EndToEndTest.php
@@ -34,8 +34,8 @@
 class EndToEndTest extends PHPUnit_Framework_TestCase{
   public function setUp() {
     $this->server = new Grpc\Server([]);
-    $port = $this->server->addHttp2Port('0.0.0.0:0');
-    $this->channel = new Grpc\Channel('localhost:' . $port, []);
+    $this->port = $this->server->addHttp2Port('0.0.0.0:0');
+    $this->channel = new Grpc\Channel('localhost:' . $this->port, []);
     $this->server->start();
   }
 
@@ -149,4 +149,8 @@ class EndToEndTest extends PHPUnit_Framework_TestCase{
     unset($call);
     unset($server_call);
   }
+
+  public function testGetTarget() {
+    $this->assertTrue(is_string($this->channel->getTarget()));
+  }
 }
diff --git a/src/python/src/grpc/_adapter/_c/types.h b/src/python/src/grpc/_adapter/_c/types.h
index 3449f0643f..4e0da4a28a 100644
--- a/src/python/src/grpc/_adapter/_c/types.h
+++ b/src/python/src/grpc/_adapter/_c/types.h
@@ -63,8 +63,6 @@ ClientCredentials *pygrpc_ClientCredentials_jwt(
     PyTypeObject *type, PyObject *args, PyObject *kwargs);
 ClientCredentials *pygrpc_ClientCredentials_refresh_token(
     PyTypeObject *type, PyObject *args, PyObject *kwargs);
-ClientCredentials *pygrpc_ClientCredentials_fake_transport_security(
-    PyTypeObject *type, PyObject *ignored);
 ClientCredentials *pygrpc_ClientCredentials_iam(
     PyTypeObject *type, PyObject *args, PyObject *kwargs);
 extern PyTypeObject pygrpc_ClientCredentials_type;
@@ -81,8 +79,6 @@ typedef struct ServerCredentials {
 void pygrpc_ServerCredentials_dealloc(ServerCredentials *self);
 ServerCredentials *pygrpc_ServerCredentials_ssl(
     PyTypeObject *type, PyObject *args, PyObject *kwargs);
-ServerCredentials *pygrpc_ServerCredentials_fake_transport_security(
-    PyTypeObject *type, PyObject *ignored);
 extern PyTypeObject pygrpc_ServerCredentials_type;
 
 
diff --git a/src/python/src/grpc/_adapter/_c/types/channel.c b/src/python/src/grpc/_adapter/_c/types/channel.c
index c235597466..feb256cf00 100644
--- a/src/python/src/grpc/_adapter/_c/types/channel.c
+++ b/src/python/src/grpc/_adapter/_c/types/channel.c
@@ -104,7 +104,7 @@ Channel *pygrpc_Channel_new(
   if (creds) {
     self->c_chan = grpc_secure_channel_create(creds->c_creds, target, &c_args);
   } else {
-    self->c_chan = grpc_channel_create(target, &c_args);
+    self->c_chan = grpc_insecure_channel_create(target, &c_args);
   }
   pygrpc_discard_channel_args(c_args);
   return self;
diff --git a/src/python/src/grpc/_adapter/_c/types/client_credentials.c b/src/python/src/grpc/_adapter/_c/types/client_credentials.c
index 6a4561c060..e314c15324 100644
--- a/src/python/src/grpc/_adapter/_c/types/client_credentials.c
+++ b/src/python/src/grpc/_adapter/_c/types/client_credentials.c
@@ -54,9 +54,6 @@ PyMethodDef pygrpc_ClientCredentials_methods[] = {
      METH_CLASS|METH_KEYWORDS, ""},
     {"refresh_token", (PyCFunction)pygrpc_ClientCredentials_refresh_token,
      METH_CLASS|METH_KEYWORDS, ""},
-    {"fake_transport_security",
-     (PyCFunction)pygrpc_ClientCredentials_fake_transport_security,
-     METH_CLASS|METH_NOARGS, ""},
     {"iam", (PyCFunction)pygrpc_ClientCredentials_iam,
      METH_CLASS|METH_KEYWORDS, ""},
     {NULL}
@@ -208,6 +205,7 @@ ClientCredentials *pygrpc_ClientCredentials_service_account(
   return self;
 }
 
+/* TODO: Rename this credentials to something like service_account_jwt_access */
 ClientCredentials *pygrpc_ClientCredentials_jwt(
     PyTypeObject *type, PyObject *args, PyObject *kwargs) {
   ClientCredentials *self;
@@ -219,7 +217,7 @@ ClientCredentials *pygrpc_ClientCredentials_jwt(
     return NULL;
   }
   self = (ClientCredentials *)type->tp_alloc(type, 0);
-  self->c_creds = grpc_jwt_credentials_create(
+  self->c_creds = grpc_service_account_jwt_access_credentials_create(
       json_key, pygrpc_cast_double_to_gpr_timespec(lifetime));
   if (!self->c_creds) {
     Py_DECREF(self);
@@ -249,20 +247,6 @@ ClientCredentials *pygrpc_ClientCredentials_refresh_token(
   return self;
 }
 
-ClientCredentials *pygrpc_ClientCredentials_fake_transport_security(
-    PyTypeObject *type, PyObject *ignored) {
-  ClientCredentials *self = (ClientCredentials *)type->tp_alloc(type, 0);
-  self->c_creds = grpc_fake_transport_security_credentials_create();
-  if (!self->c_creds) {
-    Py_DECREF(self);
-    PyErr_SetString(PyExc_RuntimeError,
-                    "couldn't create fake credentials; "
-                    "something is horribly wrong with the universe");
-    return NULL;
-  }
-  return self;
-}
-
 ClientCredentials *pygrpc_ClientCredentials_iam(
     PyTypeObject *type, PyObject *args, PyObject *kwargs) {
   ClientCredentials *self;
diff --git a/src/python/src/grpc/_adapter/_c/types/server_credentials.c b/src/python/src/grpc/_adapter/_c/types/server_credentials.c
index 2277b5b907..f6859b79d7 100644
--- a/src/python/src/grpc/_adapter/_c/types/server_credentials.c
+++ b/src/python/src/grpc/_adapter/_c/types/server_credentials.c
@@ -43,9 +43,6 @@
 PyMethodDef pygrpc_ServerCredentials_methods[] = {
     {"ssl", (PyCFunction)pygrpc_ServerCredentials_ssl,
      METH_CLASS|METH_KEYWORDS, ""},
-    {"fake_transport_security",
-     (PyCFunction)pygrpc_ServerCredentials_fake_transport_security,
-     METH_CLASS|METH_NOARGS, ""},
     {NULL}
 };
 const char pygrpc_ServerCredentials_doc[] = "";
@@ -139,10 +136,3 @@ ServerCredentials *pygrpc_ServerCredentials_ssl(
   return self;
 }
 
-ServerCredentials *pygrpc_ServerCredentials_fake_transport_security(
-    PyTypeObject *type, PyObject *ignored) {
-  ServerCredentials *self = (ServerCredentials *)type->tp_alloc(type, 0);
-  self->c_creds = grpc_fake_transport_security_server_credentials_create();
-  return self;
-}
-
diff --git a/src/python/src/grpc/_adapter/_c/utility.c b/src/python/src/grpc/_adapter/_c/utility.c
index 000c8d0c38..51f3c9be01 100644
--- a/src/python/src/grpc/_adapter/_c/utility.c
+++ b/src/python/src/grpc/_adapter/_c/utility.c
@@ -374,6 +374,7 @@ PyObject *pygrpc_consume_ops(grpc_op *op, size_t nops) {
 }
 
 double pygrpc_cast_gpr_timespec_to_double(gpr_timespec timespec) {
+  timespec = gpr_convert_clock_type(timespec, GPR_CLOCK_REALTIME);
   return timespec.tv_sec + 1e-9*timespec.tv_nsec;
 }
 
@@ -489,10 +490,10 @@ PyObject *pygrpc_cast_metadata_array_to_pyseq(grpc_metadata_array metadata) {
 void pygrpc_byte_buffer_to_bytes(
     grpc_byte_buffer *buffer, char **result, size_t *result_size) {
   grpc_byte_buffer_reader reader;
-  grpc_byte_buffer_reader_init(&reader, buffer);
   gpr_slice slice;
   char *read_result = NULL;
   size_t size = 0;
+  grpc_byte_buffer_reader_init(&reader, buffer);
   while (grpc_byte_buffer_reader_next(&reader, &slice)) {
     read_result = gpr_realloc(read_result, size + GPR_SLICE_LENGTH(slice));
     memcpy(read_result + size, GPR_SLICE_START_PTR(slice),
diff --git a/src/python/src/grpc/_adapter/_c_test.py b/src/python/src/grpc/_adapter/_c_test.py
index 133b124072..fe020e2a9c 100644
--- a/src/python/src/grpc/_adapter/_c_test.py
+++ b/src/python/src/grpc/_adapter/_c_test.py
@@ -36,14 +36,6 @@ from grpc._adapter import _types
 
 class CTypeSmokeTest(unittest.TestCase):
 
-  def testClientCredentialsUpDown(self):
-    credentials = _c.ClientCredentials.fake_transport_security()
-    del credentials
-
-  def testServerCredentialsUpDown(self):
-    credentials = _c.ServerCredentials.fake_transport_security()
-    del credentials
-
   def testCompletionQueueUpDown(self):
     completion_queue = _c.CompletionQueue()
     del completion_queue
@@ -58,10 +50,6 @@ class CTypeSmokeTest(unittest.TestCase):
     channel = _c.Channel('[::]:0', [])
     del channel
 
-  def testSecureChannelUpDown(self):
-    channel = _c.Channel('[::]:0', [], _c.ClientCredentials.fake_transport_security())
-    del channel
-
 
 if __name__ == '__main__':
   unittest.main(verbosity=2)
diff --git a/src/python/src/grpc/_adapter/_low_test.py b/src/python/src/grpc/_adapter/_low_test.py
index a49cd007bf..9a8edfad0c 100644
--- a/src/python/src/grpc/_adapter/_low_test.py
+++ b/src/python/src/grpc/_adapter/_low_test.py
@@ -97,7 +97,7 @@ class InsecureServerInsecureClient(unittest.TestCase):
     CLIENT_METADATA_BIN_VALUE = b'\0'*1000
     SERVER_INITIAL_METADATA_KEY = 'init_me_me_me'
     SERVER_INITIAL_METADATA_VALUE = 'whodawha?'
-    SERVER_TRAILING_METADATA_KEY = 'California_is_in_a_drought'
+    SERVER_TRAILING_METADATA_KEY = 'california_is_in_a_drought'
     SERVER_TRAILING_METADATA_VALUE = 'zomg it is'
     SERVER_STATUS_CODE = _types.StatusCode.OK
     SERVER_STATUS_DETAILS = 'our work is never over'
diff --git a/src/python/src/grpc/_cython/_cygrpc/credentials.pyx b/src/python/src/grpc/_cython/_cygrpc/credentials.pyx
index c14d8844dd..2d74702fbd 100644
--- a/src/python/src/grpc/_cython/_cygrpc/credentials.pyx
+++ b/src/python/src/grpc/_cython/_cygrpc/credentials.pyx
@@ -126,6 +126,7 @@ def client_credentials_service_account(
   credentials.references.extend([json_key, scope])
   return credentials
 
+#TODO rename to something like client_credentials_service_account_jwt_access.
 def client_credentials_jwt(json_key, records.Timespec token_lifetime not None):
   if isinstance(json_key, bytes):
     pass
@@ -134,7 +135,7 @@ def client_credentials_jwt(json_key, records.Timespec token_lifetime not None):
   else:
     raise TypeError("expected json_key to be str or bytes")
   cdef ClientCredentials credentials = ClientCredentials()
-  credentials.c_credentials = grpc.grpc_jwt_credentials_create(
+  credentials.c_credentials = grpc.grpc_service_account_jwt_access_credentials_create(
       json_key, token_lifetime.c_time)
   credentials.references.append(json_key)
   return credentials
@@ -152,12 +153,6 @@ def client_credentials_refresh_token(json_refresh_token):
   credentials.references.append(json_refresh_token)
   return credentials
 
-def client_credentials_fake_transport_security():
-  cdef ClientCredentials credentials = ClientCredentials()
-  credentials.c_credentials = (
-      grpc.grpc_fake_transport_security_credentials_create())
-  return credentials
-
 def client_credentials_iam(authorization_token, authority_selector):
   if isinstance(authorization_token, bytes):
     pass
@@ -210,8 +205,3 @@ def server_credentials_ssl(pem_root_certs, pem_key_cert_pairs):
   )
   return credentials
 
-def server_credentials_fake_transport_security():
-  cdef ServerCredentials credentials = ServerCredentials()
-  credentials.c_credentials = (
-      grpc.grpc_fake_transport_security_server_credentials_create())
-  return credentials
diff --git a/src/python/src/grpc/_cython/_cygrpc/grpc.pxd b/src/python/src/grpc/_cython/_cygrpc/grpc.pxd
index 7db8fbe31c..d065383587 100644
--- a/src/python/src/grpc/_cython/_cygrpc/grpc.pxd
+++ b/src/python/src/grpc/_cython/_cygrpc/grpc.pxd
@@ -313,11 +313,10 @@ cdef extern from "grpc/grpc_security.h":
   grpc_credentials *grpc_compute_engine_credentials_create()
   grpc_credentials *grpc_service_account_credentials_create(
       const char *json_key, const char *scope, gpr_timespec token_lifetime)
-  grpc_credentials *grpc_jwt_credentials_create(const char *json_key,
+  grpc_credentials *grpc_service_account_jwt_access_credentials_create(const char *json_key,
                                                 gpr_timespec token_lifetime)
   grpc_credentials *grpc_refresh_token_credentials_create(
       const char *json_refresh_token)
-  grpc_credentials *grpc_fake_transport_security_credentials_create()
   grpc_credentials *grpc_iam_credentials_create(const char *authorization_token,
                                                 const char *authority_selector)
   void grpc_credentials_release(grpc_credentials *creds)
@@ -334,7 +333,6 @@ cdef extern from "grpc/grpc_security.h":
       const char *pem_root_certs,
       grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs,
       size_t num_key_cert_pairs);
-  grpc_server_credentials *grpc_fake_transport_security_server_credentials_create()
   void grpc_server_credentials_release(grpc_server_credentials *creds)
 
   int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
diff --git a/src/python/src/grpc/_cython/adapter_low.py b/src/python/src/grpc/_cython/adapter_low.py
index 7546dd1599..2bb468eece 100644
--- a/src/python/src/grpc/_cython/adapter_low.py
+++ b/src/python/src/grpc/_cython/adapter_low.py
@@ -72,10 +72,6 @@ class ClientCredentials(object):
     raise NotImplementedError()
 
   @staticmethod
-  def fake_transport_security():
-    raise NotImplementedError()
-
-  @staticmethod
   def iam():
     raise NotImplementedError()
 
@@ -88,10 +84,6 @@ class ServerCredentials(object):
   def ssl():
     raise NotImplementedError()
 
-  @staticmethod
-  def fake_transport_security():
-    raise NotImplementedError()
-
 
 class CompletionQueue(type_interfaces.CompletionQueue):
   def __init__(self):
diff --git a/src/python/src/grpc/_cython/cygrpc.pyx b/src/python/src/grpc/_cython/cygrpc.pyx
index dcb06f345c..f4d9661580 100644
--- a/src/python/src/grpc/_cython/cygrpc.pyx
+++ b/src/python/src/grpc/_cython/cygrpc.pyx
@@ -82,12 +82,8 @@ client_credentials_compute_engine = (
     credentials.client_credentials_compute_engine)
 client_credentials_jwt = credentials.client_credentials_jwt
 client_credentials_refresh_token = credentials.client_credentials_refresh_token
-client_credentials_fake_transport_security = (
-    credentials.client_credentials_fake_transport_security)
 client_credentials_iam = credentials.client_credentials_iam
 server_credentials_ssl = credentials.server_credentials_ssl
-server_credentials_fake_transport_security = (
-    credentials.server_credentials_fake_transport_security)
 
 CompletionQueue = completion_queue.CompletionQueue
 Channel = channel.Channel
diff --git a/src/python/src/grpc/_cython/cygrpc_test.py b/src/python/src/grpc/_cython/cygrpc_test.py
index 838e1e2254..22d210b16b 100644
--- a/src/python/src/grpc/_cython/cygrpc_test.py
+++ b/src/python/src/grpc/_cython/cygrpc_test.py
@@ -76,14 +76,6 @@ class TypeSmokeTest(unittest.TestCase):
     timespec = cygrpc.Timespec(now)
     self.assertAlmostEqual(now, float(timespec), places=8)
 
-  def testClientCredentialsUpDown(self):
-    credentials = cygrpc.client_credentials_fake_transport_security()
-    del credentials
-
-  def testServerCredentialsUpDown(self):
-    credentials = cygrpc.server_credentials_fake_transport_security()
-    del credentials
-
   def testCompletionQueueUpDown(self):
     completion_queue = cygrpc.CompletionQueue()
     del completion_queue
@@ -96,12 +88,6 @@ class TypeSmokeTest(unittest.TestCase):
     channel = cygrpc.Channel('[::]:0', cygrpc.ChannelArgs([]))
     del channel
 
-  def testSecureChannelUpDown(self):
-    channel = cygrpc.Channel(
-        '[::]:0', cygrpc.ChannelArgs([]),
-        cygrpc.client_credentials_fake_transport_security())
-    del channel
-
   @unittest.skip('TODO(atash): undo skip after #2229 is merged')
   def testServerStartNoExplicitShutdown(self):
     server = cygrpc.Server()
diff --git a/src/ruby/ext/grpc/rb_call.c b/src/ruby/ext/grpc/rb_call.c
index bfb9f6ff01..a7607a83a3 100644
--- a/src/ruby/ext/grpc/rb_call.c
+++ b/src/ruby/ext/grpc/rb_call.c
@@ -235,8 +235,8 @@ static VALUE grpc_rb_call_set_metadata(VALUE self, VALUE metadata) {
 */
 static int grpc_rb_md_ary_fill_hash_cb(VALUE key, VALUE val, VALUE md_ary_obj) {
   grpc_metadata_array *md_ary = NULL;
-  int array_length;
-  int i;
+  long array_length;
+  long i;
 
   /* Construct a metadata object from key and value and add it */
   TypedData_Get_Struct(md_ary_obj, grpc_metadata_array,
diff --git a/src/ruby/ext/grpc/rb_channel.c b/src/ruby/ext/grpc/rb_channel.c
index 9bf1a9f945..0cb6fa2f80 100644
--- a/src/ruby/ext/grpc/rb_channel.c
+++ b/src/ruby/ext/grpc/rb_channel.c
@@ -146,7 +146,7 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
   target_chars = StringValueCStr(target);
   grpc_rb_hash_convert_to_channel_args(channel_args, &args);
   if (credentials == Qnil) {
-    ch = grpc_channel_create(target_chars, &args);
+    ch = grpc_insecure_channel_create(target_chars, &args);
   } else {
     creds = grpc_rb_get_wrapped_credentials(credentials);
     ch = grpc_secure_channel_create(creds, target_chars, &args);
diff --git a/src/ruby/ext/grpc/rb_grpc.c b/src/ruby/ext/grpc/rb_grpc.c
index 829f825597..327fd1a4fc 100644
--- a/src/ruby/ext/grpc/rb_grpc.c
+++ b/src/ruby/ext/grpc/rb_grpc.c
@@ -139,7 +139,7 @@ gpr_timespec grpc_rb_time_timeval(VALUE time, int interval) {
           rb_raise(rb_eRangeError, "%f out of Time range",
                    RFLOAT_VALUE(time));
         }
-        t.tv_nsec = (time_t)(d * 1e9 + 0.5);
+        t.tv_nsec = (int)(d * 1e9 + 0.5);
       }
       break;
 
@@ -209,10 +209,12 @@ static ID id_to_s;
 /* Converts a wrapped time constant to a standard time. */
 static VALUE grpc_rb_time_val_to_time(VALUE self) {
   gpr_timespec *time_const = NULL;
+  gpr_timespec real_time;
   TypedData_Get_Struct(self, gpr_timespec, &grpc_rb_timespec_data_type,
                        time_const);
-  return rb_funcall(rb_cTime, id_at, 2, INT2NUM(time_const->tv_sec),
-                    INT2NUM(time_const->tv_nsec));
+  real_time = gpr_convert_clock_type(*time_const, GPR_CLOCK_REALTIME);
+  return rb_funcall(rb_cTime, id_at, 2, INT2NUM(real_time.tv_sec),
+                    INT2NUM(real_time.tv_nsec));
 }
 
 /* Invokes inspect on the ctime version of the time val. */
diff --git a/src/ruby/ext/grpc/rb_server.c b/src/ruby/ext/grpc/rb_server.c
index e3a0a5ad80..375a651d24 100644
--- a/src/ruby/ext/grpc/rb_server.c
+++ b/src/ruby/ext/grpc/rb_server.c
@@ -213,6 +213,7 @@ static VALUE grpc_rb_server_request_call(VALUE self, VALUE cqueue,
   grpc_call_error err;
   request_call_stack st;
   VALUE result;
+  gpr_timespec deadline;
   TypedData_Get_Struct(self, grpc_rb_server, &grpc_rb_server_data_type, s);
   if (s->wrapped == NULL) {
     rb_raise(rb_eRuntimeError, "destroyed!");
@@ -245,15 +246,13 @@ static VALUE grpc_rb_server_request_call(VALUE self, VALUE cqueue,
     }
 
     /* build the NewServerRpc struct result */
+    deadline = gpr_convert_clock_type(st.details.deadline, GPR_CLOCK_REALTIME);
     result = rb_struct_new(
-        grpc_rb_sNewServerRpc,
-        rb_str_new2(st.details.method),
+        grpc_rb_sNewServerRpc, rb_str_new2(st.details.method),
         rb_str_new2(st.details.host),
-        rb_funcall(rb_cTime, id_at, 2, INT2NUM(st.details.deadline.tv_sec),
-                   INT2NUM(st.details.deadline.tv_nsec)),
-        grpc_rb_md_ary_to_h(&st.md_ary),
-        grpc_rb_wrap_call(call),
-        NULL);
+        rb_funcall(rb_cTime, id_at, 2, INT2NUM(deadline.tv_sec),
+                   INT2NUM(deadline.tv_nsec)),
+        grpc_rb_md_ary_to_h(&st.md_ary), grpc_rb_wrap_call(call), NULL);
     grpc_request_call_stack_cleanup(&st);
     return result;
   }
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index eca2a40c97..60129afc43 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -37,6 +37,8 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
 #include "test/core/util/test_config.h"
 
 static void channel_init_func(grpc_channel_element *elem, grpc_channel *master,
@@ -73,11 +75,14 @@ static void channel_func(grpc_channel_element *elem, grpc_transport_op *op) {
   ++*(int *)(elem->channel_data);
 }
 
+static char *get_peer(grpc_call_element *elem) { return gpr_strdup("peer"); }
+
 static void test_create_channel_stack(void) {
-  const grpc_channel_filter filter = {
-      call_func,         channel_func,         sizeof(int),
-      call_init_func,    call_destroy_func,    sizeof(int),
-      channel_init_func, channel_destroy_func, "some_test_filter"};
+  const grpc_channel_filter filter = {call_func,         channel_func,
+                                      sizeof(int),       call_init_func,
+                                      call_destroy_func, sizeof(int),
+                                      channel_init_func, channel_destroy_func,
+                                      get_peer,          "some_test_filter"};
   const grpc_channel_filter *filters = &filter;
   grpc_channel_stack *channel_stack;
   grpc_call_stack *call_stack;
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index 05ad42ca1f..77bea2abab 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -37,6 +37,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
 #include "test/core/end2end/cq_verifier.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
@@ -78,6 +79,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
   size_t details_capacity = 0;
   int was_cancelled = 2;
   grpc_call_details call_details;
+  char *peer;
 
   if (port == 0) {
     port = grpc_pick_unused_port_or_die();
@@ -105,8 +107,13 @@ void test_connect(const char *server_host, const char *client_host, int port,
   cqv = cq_verifier_create(cq);
 
   /* Create client. */
-  gpr_join_host_port(&client_hostport, client_host, port);
-  client = grpc_channel_create(client_hostport, NULL);
+  if (client_host[0] == 'i') {
+    /* for ipv4:/ipv6: addresses, just concatenate the port */
+    gpr_asprintf(&client_hostport, "%s:%d", client_host, port);
+  } else {
+    gpr_join_host_port(&client_hostport, client_host, port);
+  }
+  client = grpc_insecure_channel_create(client_hostport, NULL);
 
   gpr_log(GPR_INFO, "Testing with server=%s client=%s (expecting %s)",
           server_hostport, client_hostport, expect_ok ? "success" : "failure");
@@ -179,6 +186,10 @@ void test_connect(const char *server_host, const char *client_host, int port,
     cq_expect_completion(cqv, tag(1), 1);
     cq_verify(cqv);
 
+    peer = grpc_call_get_peer(c);
+    gpr_log(GPR_DEBUG, "got peer: '%s'", peer);
+    gpr_free(peer);
+
     GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
     GPR_ASSERT(0 == strcmp(details, "xyz"));
     GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
@@ -237,21 +248,31 @@ int main(int argc, char **argv) {
     /* :: and 0.0.0.0 are handled identically. */
     test_connect("::", "127.0.0.1", 0, 1);
     test_connect("::", "::ffff:127.0.0.1", 0, 1);
+    test_connect("::", "ipv4:127.0.0.1", 0, 1);
+    test_connect("::", "ipv6:[::ffff:127.0.0.1]", 0, 1);
     test_connect("::", "localhost", 0, 1);
     test_connect("0.0.0.0", "127.0.0.1", 0, 1);
     test_connect("0.0.0.0", "::ffff:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv4:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv6:[::ffff:127.0.0.1]", 0, 1);
     test_connect("0.0.0.0", "localhost", 0, 1);
     if (do_ipv6) {
       test_connect("::", "::1", 0, 1);
       test_connect("0.0.0.0", "::1", 0, 1);
+      test_connect("::", "ipv6:[::1]", 0, 1);
+      test_connect("0.0.0.0", "ipv6:[::1]", 0, 1);
     }
 
     /* These only work when the families agree. */
     test_connect("127.0.0.1", "127.0.0.1", 0, 1);
+    test_connect("127.0.0.1", "ipv4:127.0.0.1", 0, 1);
     if (do_ipv6) {
       test_connect("::1", "::1", 0, 1);
       test_connect("::1", "127.0.0.1", 0, 0);
       test_connect("127.0.0.1", "::1", 0, 0);
+      test_connect("::1", "ipv6:[::1]", 0, 1);
+      test_connect("::1", "ipv4:127.0.0.1", 0, 0);
+      test_connect("127.0.0.1", "ipv6:[::1]", 0, 0);
     }
   }
 
diff --git a/test/core/end2end/fixtures/chttp2_fullstack.c b/test/core/end2end/fixtures/chttp2_fullstack.c
index 8a1530e63b..6647b949ba 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack.c
@@ -72,7 +72,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
                                   grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
-  f->client = grpc_channel_create(ffd->localaddr, client_args);
+  f->client = grpc_insecure_channel_create(ffd->localaddr, client_args);
   GPR_ASSERT(f->client);
 }
 
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_compression.c b/test/core/end2end/fixtures/chttp2_fullstack_compression.c
index 0a9a312296..f3d1fa22dc 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack_compression.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack_compression.c
@@ -82,7 +82,8 @@ void chttp2_init_client_fullstack_compression(grpc_end2end_test_fixture *f,
   }
   ffd->client_args_compression = grpc_channel_args_set_compression_algorithm(
       client_args, GRPC_COMPRESS_GZIP);
-  f->client = grpc_channel_create(ffd->localaddr, ffd->client_args_compression);
+  f->client = grpc_insecure_channel_create(ffd->localaddr,
+                                           ffd->client_args_compression);
 }
 
 void chttp2_init_server_fullstack_compression(grpc_end2end_test_fixture *f,
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c b/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
index 351e1c5459..89ad7b8c2d 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
@@ -78,7 +78,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
                                   grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
-  f->client = grpc_channel_create(ffd->localaddr, client_args);
+  f->client = grpc_insecure_channel_create(ffd->localaddr, client_args);
 }
 
 void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c b/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
index 69860d04d5..93786d0943 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
@@ -72,7 +72,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
 void chttp2_init_client_fullstack(grpc_end2end_test_fixture *f,
                                   grpc_channel_args *client_args) {
   fullstack_fixture_data *ffd = f->fixture_data;
-  f->client = grpc_channel_create(ffd->localaddr, client_args);
+  f->client = grpc_insecure_channel_create(ffd->localaddr, client_args);
 }
 
 void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair.c b/test/core/end2end/fixtures/chttp2_socket_pair.c
index 37b61cf37f..807fc8e7bc 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair.c
@@ -80,7 +80,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
index 2ec2697288..21d4404237 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
@@ -80,7 +80,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
index 3aa364c5e0..c59628b959 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
@@ -81,7 +81,7 @@ static void client_setup_transport(void *ts, grpc_transport *transport,
                                           &grpc_connected_channel_filter};
   size_t nfilters = sizeof(filters) / sizeof(*filters);
   grpc_channel *channel = grpc_channel_create_from_filters(
-      filters, nfilters, cs->client_args, mdctx, 1);
+      "socketpair-target", filters, nfilters, cs->client_args, mdctx, 1);
 
   cs->f->client = channel;
 
diff --git a/test/core/end2end/no_server_test.c b/test/core/end2end/no_server_test.c
index 79797f9375..6f1133c009 100644
--- a/test/core/end2end/no_server_test.c
+++ b/test/core/end2end/no_server_test.c
@@ -61,7 +61,7 @@ int main(int argc, char **argv) {
   cqv = cq_verifier_create(cq);
 
   /* create a call, channel to a non existant server */
-  chan = grpc_channel_create("nonexistant:54321", NULL);
+  chan = grpc_insecure_channel_create("nonexistant:54321", NULL);
   call = grpc_channel_create_call(chan, cq, "/Foo", "nonexistant", deadline);
 
   op = ops;
diff --git a/test/core/end2end/tests/request_response_with_metadata_and_payload.c b/test/core/end2end/tests/request_response_with_metadata_and_payload.c
index ef6dfe9561..9821d7852f 100644
--- a/test/core/end2end/tests/request_response_with_metadata_and_payload.c
+++ b/test/core/end2end/tests/request_response_with_metadata_and_payload.c
@@ -111,8 +111,8 @@ static void test_request_response_with_metadata_and_payload(
   gpr_timespec deadline = five_seconds_time();
   grpc_metadata meta_c[2] = {{"key1", "val1", 4, {{NULL, NULL, NULL}}},
                              {"key2", "val2", 4, {{NULL, NULL, NULL}}}};
-  grpc_metadata meta_s[2] = {{"key3", "val3", 4, {{NULL, NULL, NULL}}},
-                             {"key4", "val4", 4, {{NULL, NULL, NULL}}}};
+  grpc_metadata meta_s[2] = {{"KeY3", "val3", 4, {{NULL, NULL, NULL}}},
+                             {"KeY4", "val4", 4, {{NULL, NULL, NULL}}}};
   grpc_end2end_test_fixture f = begin_test(
       config, "test_request_response_with_metadata_and_payload", NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 6194b841d8..ca783afccd 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -114,11 +114,17 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   char *details = NULL;
   size_t details_capacity = 0;
   int was_cancelled = 2;
+  char *peer;
 
   c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer_before_call=%s", peer);
+  gpr_free(peer);
+
   grpc_metadata_array_init(&initial_metadata_recv);
   grpc_metadata_array_init(&trailing_metadata_recv);
   grpc_metadata_array_init(&request_metadata_recv);
@@ -151,6 +157,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   cq_expect_completion(cqv, tag(101), 1);
   cq_verify(cqv);
 
+  peer = grpc_call_get_peer(s);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "server_peer=%s", peer);
+  gpr_free(peer);
+  peer = grpc_call_get_peer(c);
+  GPR_ASSERT(peer != NULL);
+  gpr_log(GPR_DEBUG, "client_peer=%s", peer);
+  gpr_free(peer);
+
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
diff --git a/test/core/fling/client.c b/test/core/fling/client.c
index 2b19654379..5647a16101 100644
--- a/test/core/fling/client.c
+++ b/test/core/fling/client.c
@@ -183,7 +183,7 @@ int main(int argc, char **argv) {
     return 1;
   }
 
-  channel = grpc_channel_create(target, NULL);
+  channel = grpc_insecure_channel_create(target, NULL);
   cq = grpc_completion_queue_create();
   the_buffer = grpc_raw_byte_buffer_create(&slice, payload_size);
   histogram = gpr_histogram_create(0.01, 60e9);
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index a23c64928e..4e7fb446a7 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -172,7 +172,7 @@ static void read_test(ssize_t num_bytes, ssize_t slice_size) {
 
   create_sockets(sv);
 
-  ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), slice_size);
+  ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), slice_size, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   written_bytes = fill_socket_partial(sv[0], num_bytes);
@@ -207,7 +207,8 @@ static void large_read_test(ssize_t slice_size) {
 
   create_sockets(sv);
 
-  ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), slice_size);
+  ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), slice_size,
+                       "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   written_bytes = fill_socket(sv[0]);
@@ -340,7 +341,7 @@ static void write_test(ssize_t num_bytes, ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_test"),
-                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   state.ep = ep;
@@ -394,7 +395,7 @@ static void write_error_test(ssize_t num_bytes, ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_error_test"),
-                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, "test");
   grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
   close(sv[0]);
@@ -459,10 +460,10 @@ static grpc_endpoint_test_fixture create_fixture_tcp_socketpair(
   grpc_endpoint_test_fixture f;
 
   create_sockets(sv);
-  f.client_ep =
-      grpc_tcp_create(grpc_fd_create(sv[0], "fixture:client"), slice_size);
-  f.server_ep =
-      grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"), slice_size);
+  f.client_ep = grpc_tcp_create(grpc_fd_create(sv[0], "fixture:client"),
+                                slice_size, "test");
+  f.server_ep = grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"),
+                                slice_size, "test");
   grpc_endpoint_add_to_pollset(f.client_ep, &g_pollset);
   grpc_endpoint_add_to_pollset(f.server_ep, &g_pollset);
 
diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index d3fea9680a..dd6e0d7bb3 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -826,8 +826,9 @@ static void on_jwt_creds_get_metadata_failure(void *user_data,
 
 static void test_jwt_creds_success(void) {
   char *json_key_string = test_json_key_str();
-  grpc_credentials *jwt_creds = grpc_jwt_credentials_create(
-      json_key_string, grpc_max_auth_token_lifetime);
+  grpc_credentials *jwt_creds =
+      grpc_service_account_jwt_access_credentials_create(
+          json_key_string, grpc_max_auth_token_lifetime);
   GPR_ASSERT(grpc_credentials_has_request_metadata(jwt_creds));
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(jwt_creds));
 
@@ -858,8 +859,9 @@ static void test_jwt_creds_success(void) {
 
 static void test_jwt_creds_signing_failure(void) {
   char *json_key_string = test_json_key_str();
-  grpc_credentials *jwt_creds = grpc_jwt_credentials_create(
-      json_key_string, grpc_max_auth_token_lifetime);
+  grpc_credentials *jwt_creds =
+      grpc_service_account_jwt_access_credentials_create(
+          json_key_string, grpc_max_auth_token_lifetime);
   GPR_ASSERT(grpc_credentials_has_request_metadata(jwt_creds));
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(jwt_creds));
 
@@ -900,7 +902,7 @@ static grpc_credentials *composite_inner_creds(grpc_credentials *creds,
 }
 
 static void test_google_default_creds_auth_key(void) {
-  grpc_jwt_credentials *jwt;
+  grpc_service_account_jwt_access_credentials *jwt;
   grpc_credentials *creds;
   char *json_key = test_json_key_str();
   grpc_flush_cached_google_default_credentials();
@@ -909,7 +911,7 @@ static void test_google_default_creds_auth_key(void) {
   gpr_free(json_key);
   creds = grpc_google_default_credentials_create();
   GPR_ASSERT(creds != NULL);
-  jwt = (grpc_jwt_credentials *)composite_inner_creds(
+  jwt = (grpc_service_account_jwt_access_credentials *)composite_inner_creds(
       creds, GRPC_CREDENTIALS_TYPE_JWT);
   GPR_ASSERT(
       strcmp(jwt->key.client_id,
diff --git a/test/core/surface/lame_client_test.c b/test/core/surface/lame_client_test.c
index b2facd33b1..3a7a3a36ee 100644
--- a/test/core/surface/lame_client_test.c
+++ b/test/core/surface/lame_client_test.c
@@ -57,7 +57,7 @@ int main(int argc, char **argv) {
 
   grpc_metadata_array_init(&trailing_metadata_recv);
 
-  chan = grpc_lame_client_channel_create();
+  chan = grpc_lame_client_channel_create("lampoon:national");
   GPR_ASSERT(chan);
   cq = grpc_completion_queue_create();
   call = grpc_channel_create_call(chan, cq, "/Foo", "anywhere",
diff --git a/test/core/transport/metadata_test.c b/test/core/transport/metadata_test.c
index a932e04f33..4a4d4bcb8a 100644
--- a/test/core/transport/metadata_test.c
+++ b/test/core/transport/metadata_test.c
@@ -63,9 +63,9 @@ static void test_create_string(void) {
   LOG_TEST("test_create_string");
 
   ctx = grpc_mdctx_create();
-  s1 = grpc_mdstr_from_string(ctx, "hello");
-  s2 = grpc_mdstr_from_string(ctx, "hello");
-  s3 = grpc_mdstr_from_string(ctx, "very much not hello");
+  s1 = grpc_mdstr_from_string(ctx, "hello", 0);
+  s2 = grpc_mdstr_from_string(ctx, "hello", 0);
+  s3 = grpc_mdstr_from_string(ctx, "very much not hello", 0);
   GPR_ASSERT(s1 == s2);
   GPR_ASSERT(s3 != s1);
   GPR_ASSERT(gpr_slice_str_cmp(s1->slice, "hello") == 0);
@@ -190,7 +190,7 @@ static void test_things_stick_around(void) {
 
   for (i = 0; i < nstrs; i++) {
     gpr_asprintf(&buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%dx", i);
-    strs[i] = grpc_mdstr_from_string(ctx, buffer);
+    strs[i] = grpc_mdstr_from_string(ctx, buffer, 0);
     shuf[i] = i;
     gpr_free(buffer);
   }
@@ -212,7 +212,7 @@ static void test_things_stick_around(void) {
     GRPC_MDSTR_UNREF(strs[shuf[i]]);
     for (j = i + 1; j < nstrs; j++) {
       gpr_asprintf(&buffer, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%dx", shuf[j]);
-      test = grpc_mdstr_from_string(ctx, buffer);
+      test = grpc_mdstr_from_string(ctx, buffer, 0);
       GPR_ASSERT(test == strs[shuf[j]]);
       GRPC_MDSTR_UNREF(test);
       gpr_free(buffer);
@@ -235,13 +235,13 @@ static void test_slices_work(void) {
   ctx = grpc_mdctx_create();
 
   str = grpc_mdstr_from_string(
-      ctx, "123456789012345678901234567890123456789012345678901234567890");
+      ctx, "123456789012345678901234567890123456789012345678901234567890", 0);
   slice = gpr_slice_ref(str->slice);
   GRPC_MDSTR_UNREF(str);
   gpr_slice_unref(slice);
 
   str = grpc_mdstr_from_string(
-      ctx, "123456789012345678901234567890123456789012345678901234567890");
+      ctx, "123456789012345678901234567890123456789012345678901234567890", 0);
   slice = gpr_slice_ref(str->slice);
   gpr_slice_unref(slice);
   GRPC_MDSTR_UNREF(str);
@@ -258,7 +258,7 @@ static void test_base64_and_huffman_works(void) {
   LOG_TEST("test_base64_and_huffman_works");
 
   ctx = grpc_mdctx_create();
-  str = grpc_mdstr_from_string(ctx, "abcdefg");
+  str = grpc_mdstr_from_string(ctx, "abcdefg", 0);
   slice1 = grpc_mdstr_as_base64_encoded_and_huffman_compressed(str);
   slice2 = grpc_chttp2_base64_encode_and_huffman_compress(str->slice);
   GPR_ASSERT(0 == gpr_slice_cmp(slice1, slice2));
diff --git a/test/cpp/client/credentials_test.cc b/test/cpp/client/credentials_test.cc
index ee94f455a4..bbf7705f0a 100644
--- a/test/cpp/client/credentials_test.cc
+++ b/test/cpp/client/credentials_test.cc
@@ -47,7 +47,7 @@ class CredentialsTest : public ::testing::Test {
 
 TEST_F(CredentialsTest, InvalidServiceAccountCreds) {
   std::shared_ptr<Credentials> bad1 = ServiceAccountCredentials("", "", 1);
-  EXPECT_EQ(nullptr, bad1.get());
+  EXPECT_EQ(static_cast<Credentials *>(nullptr), bad1.get());
 }
 
 }  // namespace testing
diff --git a/test/cpp/common/secure_auth_context_test.cc b/test/cpp/common/secure_auth_context_test.cc
index f18a04178e..d0243a5432 100644
--- a/test/cpp/common/secure_auth_context_test.cc
+++ b/test/cpp/common/secure_auth_context_test.cc
@@ -92,26 +92,6 @@ TEST_F(SecureAuthContextTest, Iterators) {
   EXPECT_EQ("bar", p2.second);
   ++iter;
   EXPECT_EQ(context.end(), iter);
-  // Range-based for loop test.
-  int i = 0;
-  for (auto p : context) {
-    switch (i++) {
-      case 0:
-        EXPECT_EQ("name", p.first);
-        EXPECT_EQ("chapi", p.second);
-        break;
-      case 1:
-        EXPECT_EQ("name", p.first);
-        EXPECT_EQ("chapo", p.second);
-        break;
-      case 2:
-        EXPECT_EQ("foo", p.first);
-        EXPECT_EQ("bar", p.second);
-        break;
-      default:
-        EXPECT_TRUE(0);
-    }
-  }
 }
 
 }  // namespace
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index a865a0e359..d7a52bf274 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -35,17 +35,17 @@
 #include <thread>
 
 #include "src/core/security/credentials.h"
+#include "test/core/end2end/data/ssl_test_data.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 #include "test/cpp/util/echo_duplicate.grpc.pb.h"
 #include "test/cpp/util/echo.grpc.pb.h"
-#include "test/cpp/util/fake_credentials.h"
 #include <grpc++/channel_arguments.h>
 #include <grpc++/channel_interface.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/fixed_size_thread_pool.h>
+#include <grpc++/dynamic_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -83,13 +83,12 @@ void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request,
   }
 }
 
-template <typename T>
-void CheckAuthContext(T* context) {
+void CheckServerAuthContext(const ServerContext* context) {
   std::shared_ptr<const AuthContext> auth_ctx = context->auth_context();
-  std::vector<grpc::string> fake =
+  std::vector<grpc::string> ssl =
       auth_ctx->FindPropertyValues("transport_security_type");
-  EXPECT_EQ(1u, fake.size());
-  EXPECT_EQ("fake", fake[0]);
+  EXPECT_EQ(1u, ssl.size());
+  EXPECT_EQ("ssl", ssl[0]);
   EXPECT_TRUE(auth_ctx->GetPeerIdentityPropertyName().empty());
   EXPECT_TRUE(auth_ctx->GetPeerIdentity().empty());
 }
@@ -142,7 +141,12 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
       }
     }
     if (request->has_param() && request->param().check_auth_context()) {
-      CheckAuthContext(context);
+      CheckServerAuthContext(context);
+    }
+    if (request->has_param() &&
+        request->param().response_message_length() > 0) {
+      response->set_message(
+          grpc::string(request->param().response_message_length(), '\0'));
     }
     return Status::OK;
   }
@@ -235,10 +239,15 @@ class End2endTest : public ::testing::Test {
     server_address_ << "localhost:" << port;
     // Setup server
     ServerBuilder builder;
+    SslServerCredentialsOptions::PemKeyCertPair pkcp = {test_server1_key,
+      test_server1_cert};
+    SslServerCredentialsOptions ssl_opts;
+    ssl_opts.pem_root_certs = "";
+    ssl_opts.pem_key_cert_pairs.push_back(pkcp);
     builder.AddListeningPort(server_address_.str(),
-                             FakeTransportSecurityServerCredentials());
+                             SslServerCredentials(ssl_opts));
     builder.RegisterService(&service_);
-    builder.RegisterService("special", &special_service_);
+    builder.RegisterService("foo.test.youtube.com", &special_service_);
     builder.SetMaxMessageSize(
         kMaxMessageSize_);  // For testing max message size.
     builder.RegisterService(&dup_pkg_service_);
@@ -249,13 +258,16 @@ class End2endTest : public ::testing::Test {
   void TearDown() GRPC_OVERRIDE { server_->Shutdown(); }
 
   void ResetStub() {
+    SslCredentialsOptions ssl_opts = {test_root_cert, "", ""};
     ChannelArguments args;
+    args.SetSslTargetNameOverride("foo.test.google.fr");
     args.SetString(GRPC_ARG_SECONDARY_USER_AGENT_STRING, "end2end_test");
-    std::shared_ptr<ChannelInterface> channel = CreateChannel(
-        server_address_.str(), FakeTransportSecurityCredentials(), args);
-    stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel));
+    channel_ = CreateChannel(server_address_.str(), SslCredentials(ssl_opts),
+                             args);
+    stub_ = std::move(grpc::cpp::test::util::TestService::NewStub(channel_));
   }
 
+  std::shared_ptr<ChannelInterface> channel_;
   std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub_;
   std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
@@ -263,7 +275,7 @@ class End2endTest : public ::testing::Test {
   TestServiceImpl service_;
   TestServiceImpl special_service_;
   TestServiceImplDupPkg dup_pkg_service_;
-  FixedSizeThreadPool thread_pool_;
+  DynamicThreadPool thread_pool_;
 };
 
 static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
@@ -289,11 +301,11 @@ TEST_F(End2endTest, SimpleRpcWithHost) {
   request.set_message("Hello");
 
   ClientContext context;
-  context.set_authority("special");
+  context.set_authority("foo.test.youtube.com");
   Status s = stub_->Echo(&context, request, &response);
   EXPECT_EQ(response.message(), request.message());
   EXPECT_TRUE(response.has_param());
-  EXPECT_EQ(response.param().host(), "special");
+  EXPECT_EQ("special", response.param().host());
   EXPECT_TRUE(s.ok());
 }
 
@@ -482,24 +494,19 @@ TEST_F(End2endTest, BidiStream) {
 // Talk to the two services with the same name but different package names.
 // The two stubs are created on the same channel.
 TEST_F(End2endTest, DiffPackageServices) {
-  std::shared_ptr<ChannelInterface> channel =
-      CreateChannel(server_address_.str(), FakeTransportSecurityCredentials(),
-                    ChannelArguments());
-
+  ResetStub();
   EchoRequest request;
   EchoResponse response;
   request.set_message("Hello");
 
-  std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub(
-      grpc::cpp::test::util::TestService::NewStub(channel));
   ClientContext context;
-  Status s = stub->Echo(&context, request, &response);
+  Status s = stub_->Echo(&context, request, &response);
   EXPECT_EQ(response.message(), request.message());
   EXPECT_TRUE(s.ok());
 
   std::unique_ptr<grpc::cpp::test::util::duplicate::TestService::Stub>
       dup_pkg_stub(
-          grpc::cpp::test::util::duplicate::TestService::NewStub(channel));
+          grpc::cpp::test::util::duplicate::TestService::NewStub(channel_));
   ClientContext context2;
   s = dup_pkg_stub->Echo(&context2, request, &response);
   EXPECT_EQ("no package", response.message());
@@ -509,7 +516,7 @@ TEST_F(End2endTest, DiffPackageServices) {
 // rpc and stream should fail on bad credentials.
 TEST_F(End2endTest, BadCredentials) {
   std::shared_ptr<Credentials> bad_creds = ServiceAccountCredentials("", "", 1);
-  EXPECT_EQ(nullptr, bad_creds.get());
+  EXPECT_EQ(static_cast<Credentials *>(nullptr), bad_creds.get());
   std::shared_ptr<ChannelInterface> channel =
       CreateChannel(server_address_.str(), bad_creds, ChannelArguments());
   std::unique_ptr<grpc::cpp::test::util::TestService::Stub> stub(
@@ -783,7 +790,32 @@ TEST_F(End2endTest, ClientAuthContext) {
   EXPECT_EQ(response.message(), request.message());
   EXPECT_TRUE(s.ok());
 
-  CheckAuthContext(&context);
+  std::shared_ptr<const AuthContext> auth_ctx = context.auth_context();
+  std::vector<grpc::string> ssl =
+      auth_ctx->FindPropertyValues("transport_security_type");
+  EXPECT_EQ(1u, ssl.size());
+  EXPECT_EQ("ssl", ssl[0]);
+  EXPECT_EQ("x509_subject_alternative_name",
+            auth_ctx->GetPeerIdentityPropertyName());
+  EXPECT_EQ(3u, auth_ctx->GetPeerIdentity().size());
+  EXPECT_EQ("*.test.google.fr", auth_ctx->GetPeerIdentity()[0]);
+  EXPECT_EQ("waterzooi.test.google.be", auth_ctx->GetPeerIdentity()[1]);
+  EXPECT_EQ("*.test.youtube.com", auth_ctx->GetPeerIdentity()[2]);
+}
+
+// Make the response larger than the flow control window.
+TEST_F(End2endTest, HugeResponse) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  request.set_message("huge response");
+  const size_t kResponseSize = 1024 * (1024 + 10);
+  request.mutable_param()->set_response_message_length(kResponseSize);
+
+  ClientContext context;
+  Status s = stub_->Echo(&context, request, &response);
+  EXPECT_EQ(kResponseSize, response.message().size());
+  EXPECT_TRUE(s.ok());
 }
 
 }  // namespace testing
diff --git a/test/cpp/end2end/mock_test.cc b/test/cpp/end2end/mock_test.cc
index 74b40d54d8..32130e24e9 100644
--- a/test/cpp/end2end/mock_test.cc
+++ b/test/cpp/end2end/mock_test.cc
@@ -42,7 +42,7 @@
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/fixed_size_thread_pool.h>
+#include <grpc++/dynamic_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -260,7 +260,7 @@ class MockTest : public ::testing::Test {
   std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
   TestServiceImpl service_;
-  FixedSizeThreadPool thread_pool_;
+  DynamicThreadPool thread_pool_;
 };
 
 // Do one real rpc and one mocked one
diff --git a/test/cpp/end2end/thread_stress_test.cc b/test/cpp/end2end/thread_stress_test.cc
index e47139641b..ff9c945c7c 100644
--- a/test/cpp/end2end/thread_stress_test.cc
+++ b/test/cpp/end2end/thread_stress_test.cc
@@ -43,7 +43,7 @@
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/fixed_size_thread_pool.h>
+#include <grpc++/dynamic_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -208,7 +208,7 @@ class End2endTest : public ::testing::Test {
   const int kMaxMessageSize_;
   TestServiceImpl service_;
   TestServiceImplDupPkg dup_pkg_service_;
-  FixedSizeThreadPool thread_pool_;
+  DynamicThreadPool thread_pool_;
 };
 
 static void SendRpc(grpc::cpp::test::util::TestService::Stub* stub,
diff --git a/test/cpp/interop/client_helper.cc b/test/cpp/interop/client_helper.cc
index 48b1b2e864..73d82f7b88 100644
--- a/test/cpp/interop/client_helper.cc
+++ b/test/cpp/interop/client_helper.cc
@@ -123,7 +123,8 @@ std::shared_ptr<ChannelInterface> CreateChannelForTestCase(
     GPR_ASSERT(FLAGS_enable_ssl);
     grpc::string json_key = GetServiceAccountJsonKey();
     std::chrono::seconds token_lifetime = std::chrono::hours(1);
-    creds = JWTCredentials(json_key, token_lifetime.count());
+    creds =
+        ServiceAccountJWTAccessCredentials(json_key, token_lifetime.count());
     return CreateTestChannel(host_port, FLAGS_server_host_override,
                              FLAGS_enable_ssl, FLAGS_use_prod_roots, creds);
   } else if (test_case == "oauth2_auth_token") {
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index 846f8f31b0..33b6fa55c3 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -45,7 +45,6 @@
 #include <grpc/support/host_port.h>
 #include <grpc++/async_unary_call.h>
 #include <grpc++/config.h>
-#include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
diff --git a/test/cpp/qps/server_sync.cc b/test/cpp/qps/server_sync.cc
index d90ff2212b..4c3c9cb497 100644
--- a/test/cpp/qps/server_sync.cc
+++ b/test/cpp/qps/server_sync.cc
@@ -40,6 +40,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc++/config.h>
+#include <grpc++/dynamic_thread_pool.h>
 #include <grpc++/fixed_size_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
@@ -92,7 +93,13 @@ class TestServiceImpl GRPC_FINAL : public TestService::Service {
 class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
  public:
   SynchronousServer(const ServerConfig& config, int port)
-      : thread_pool_(config.threads()), impl_(MakeImpl(port)) {}
+      : thread_pool_(), impl_(MakeImpl(port)) {
+    if (config.threads() > 0) {
+      thread_pool_.reset(new FixedSizeThreadPool(config.threads()));
+    } else {
+      thread_pool_.reset(new DynamicThreadPool(-config.threads()));
+    }
+  }
 
  private:
   std::unique_ptr<grpc::Server> MakeImpl(int port) {
@@ -105,13 +112,13 @@ class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
 
     builder.RegisterService(&service_);
 
-    builder.SetThreadPool(&thread_pool_);
+    builder.SetThreadPool(thread_pool_.get());
 
     return builder.BuildAndStart();
   }
 
   TestServiceImpl service_;
-  FixedSizeThreadPool thread_pool_;
+  std::unique_ptr<ThreadPoolInterface> thread_pool_;
   std::unique_ptr<grpc::Server> impl_;
 };
 
diff --git a/test/cpp/qps/timer.cc b/test/cpp/qps/timer.cc
index 07289f699b..c1ba23decd 100644
--- a/test/cpp/qps/timer.cc
+++ b/test/cpp/qps/timer.cc
@@ -52,7 +52,7 @@ static double time_double(struct timeval* tv) {
 Timer::Result Timer::Sample() {
   struct rusage usage;
   struct timeval tv;
-  gettimeofday(&tv, nullptr);
+  gettimeofday(&tv, NULL);
   getrusage(RUSAGE_SELF, &usage);
 
   Result r;
diff --git a/test/cpp/server/dynamic_thread_pool_test.cc b/test/cpp/server/dynamic_thread_pool_test.cc
new file mode 100644
index 0000000000..63b603b8f7
--- /dev/null
+++ b/test/cpp/server/dynamic_thread_pool_test.cc
@@ -0,0 +1,77 @@
+/*
+ *
+ * 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 <condition_variable>
+#include <functional>
+#include <mutex>
+
+#include <grpc++/dynamic_thread_pool.h>
+#include <gtest/gtest.h>
+
+namespace grpc {
+
+class DynamicThreadPoolTest : public ::testing::Test {
+ public:
+  DynamicThreadPoolTest() : thread_pool_(0) {}
+
+ protected:
+  DynamicThreadPool thread_pool_;
+};
+
+void Callback(std::mutex* mu, std::condition_variable* cv, bool* done) {
+  std::unique_lock<std::mutex> lock(*mu);
+  *done = true;
+  cv->notify_all();
+}
+
+TEST_F(DynamicThreadPoolTest, Add) {
+  std::mutex mu;
+  std::condition_variable cv;
+  bool done = false;
+  std::function<void()> callback = std::bind(Callback, &mu, &cv, &done);
+  thread_pool_.Add(callback);
+
+  // Wait for the callback to finish.
+  std::unique_lock<std::mutex> lock(mu);
+  while (!done) {
+    cv.wait(lock);
+  }
+}
+
+}  // namespace grpc
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  int result = RUN_ALL_TESTS();
+  return result;
+}
diff --git a/test/cpp/util/cli_call_test.cc b/test/cpp/util/cli_call_test.cc
index 00bb821ae6..848a3aee57 100644
--- a/test/cpp/util/cli_call_test.cc
+++ b/test/cpp/util/cli_call_test.cc
@@ -39,7 +39,7 @@
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/fixed_size_thread_pool.h>
+#include <grpc++/dynamic_thread_pool.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
@@ -102,7 +102,7 @@ class CliCallTest : public ::testing::Test {
   std::unique_ptr<Server> server_;
   std::ostringstream server_address_;
   TestServiceImpl service_;
-  FixedSizeThreadPool thread_pool_;
+  DynamicThreadPool thread_pool_;
 };
 
 // Send a rpc with a normal stub and then a CliCall. Verify they match.
diff --git a/test/cpp/util/messages.proto b/test/cpp/util/messages.proto
index 3708972b90..2fad8b42a2 100644
--- a/test/cpp/util/messages.proto
+++ b/test/cpp/util/messages.proto
@@ -38,6 +38,7 @@ message RequestParams {
   optional int32 server_cancel_after_us = 3;
   optional bool echo_metadata = 4;
   optional bool check_auth_context = 5;
+  optional int32 response_message_length = 6;
 }
 
 message EchoRequest {
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 4bdd8babde..785779beb5 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -773,6 +773,7 @@ include/grpc++/config.h \
 include/grpc++/config_protobuf.h \
 include/grpc++/create_channel.h \
 include/grpc++/credentials.h \
+include/grpc++/dynamic_thread_pool.h \
 include/grpc++/fixed_size_thread_pool.h \
 include/grpc++/generic_stub.h \
 include/grpc++/impl/call.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 1c73ca6294..5cf6168388 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -773,6 +773,7 @@ include/grpc++/config.h \
 include/grpc++/config_protobuf.h \
 include/grpc++/create_channel.h \
 include/grpc++/credentials.h \
+include/grpc++/dynamic_thread_pool.h \
 include/grpc++/fixed_size_thread_pool.h \
 include/grpc++/generic_stub.h \
 include/grpc++/impl/call.h \
@@ -825,6 +826,7 @@ src/cpp/common/rpc_method.cc \
 src/cpp/proto/proto_utils.cc \
 src/cpp/server/async_generic_service.cc \
 src/cpp/server/create_default_thread_pool.cc \
+src/cpp/server/dynamic_thread_pool.cc \
 src/cpp/server/fixed_size_thread_pool.cc \
 src/cpp/server/insecure_server_credentials.cc \
 src/cpp/server/server.cc \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 31ad56a97c..3e578c171b 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -803,7 +803,7 @@ src/core/client_config/resolver.h \
 src/core/client_config/resolver_factory.h \
 src/core/client_config/resolver_registry.h \
 src/core/client_config/resolvers/dns_resolver.h \
-src/core/client_config/resolvers/unix_resolver_posix.h \
+src/core/client_config/resolvers/sockaddr_resolver.h \
 src/core/client_config/subchannel.h \
 src/core/client_config/subchannel_factory.h \
 src/core/client_config/uri_parser.h \
@@ -881,6 +881,7 @@ src/core/transport/stream_op.h \
 src/core/transport/transport.h \
 src/core/transport/transport_impl.h \
 src/core/census/context.h \
+src/core/census/rpc_stat_id.h \
 src/core/httpcli/format_request.c \
 src/core/httpcli/httpcli.c \
 src/core/httpcli/httpcli_security_connector.c \
@@ -922,7 +923,7 @@ src/core/client_config/resolver.c \
 src/core/client_config/resolver_factory.c \
 src/core/client_config/resolver_registry.c \
 src/core/client_config/resolvers/dns_resolver.c \
-src/core/client_config/resolvers/unix_resolver_posix.c \
+src/core/client_config/resolvers/sockaddr_resolver.c \
 src/core/client_config/subchannel.c \
 src/core/client_config/subchannel_factory.c \
 src/core/client_config/uri_parser.c \
@@ -1016,6 +1017,7 @@ src/core/transport/transport.c \
 src/core/transport/transport_op_string.c \
 src/core/census/context.c \
 src/core/census/initialize.c \
+src/core/census/record_stat.c \
 include/grpc/support/alloc.h \
 include/grpc/support/atm.h \
 include/grpc/support/atm_gcc_atomic.h \
diff --git a/tools/jenkins/run_distribution.sh b/tools/jenkins/run_distribution.sh
index eea25b62e6..49b7d306d1 100755
--- a/tools/jenkins/run_distribution.sh
+++ b/tools/jenkins/run_distribution.sh
@@ -32,6 +32,17 @@
 # linuxbrew installation of a selected language
 set -ex
 
+# Our homebrew installation script command, per language
+# Can be used in both linux and macos
+if [ "$language" == "core" ]; then
+  command="curl -fsSL https://goo.gl/getgrpc | bash -"
+elif [[ "python nodejs ruby php" =~ "$language" ]]; then
+  command="curl -fsSL https://goo.gl/getgrpc | bash -s $language"
+else
+  echo "unsupported language $language"
+  exit 1
+fi
+
 if [ "$platform" == "linux" ]; then
 
   if [ "$dist_channel" == "homebrew" ]; then
@@ -42,15 +53,6 @@ if [ "$platform" == "linux" ]; then
     # build docker image, contains all pre-requisites
     docker build -t $DOCKER_IMAGE_NAME tools/jenkins/grpc_linuxbrew
 
-    if [ "$language" == "core" ]; then
-      command="curl -fsSL https://goo.gl/getgrpc | bash -"
-    elif [[ "python nodejs ruby php" =~ "$language" ]]; then
-      command="curl -fsSL https://goo.gl/getgrpc | bash -s $language"
-    else
-      echo "unsupported language $language"
-      exit 1
-    fi
-
     # run per-language homebrew installation script
     docker run $DOCKER_IMAGE_NAME bash -l \
       -c "nvm use 0.12; \
@@ -66,80 +68,69 @@ if [ "$platform" == "linux" ]; then
 elif [ "$platform" == "macos" ]; then
 
   if [ "$dist_channel" == "homebrew" ]; then
-    # system installed homebrew, don't interfere
+
+    echo "Formulas installed by system-wide homebrew (before)"
     brew list -l
 
+    # Save the original PATH so that we can run the system `brew` command
+    # again at the end of the script
+    export ORIGINAL_PATH=$PATH
+
     # Set up temp directories for test installation of homebrew
     brew_root=/tmp/homebrew-test-$language
     rm -rf $brew_root
     mkdir -p $brew_root
     git clone https://github.com/Homebrew/homebrew.git $brew_root
 
-    # Install grpc via homebrew
-    #
-    # The temp $PATH env variable makes sure we are operating at the right copy of
-    # temp homebrew installation, and do not interfere with the system's main brew
-    # installation.
-    #
-    # TODO: replace the next section with the actual homebrew installation script
-    # i.e. curl -fsSL https://goo.gl/getgrpc | bash -s $language
-    # need to resolve a bunch of environment and privilege issue on the jenkins
-    # mac machine itself
-    export OLD_PATH=$PATH
+    # Make sure we are operating at the right copy of temp homebrew
+    # installation
     export PATH=$brew_root/bin:$PATH
-    cd $brew_root
-    brew tap homebrew/dupes
-    brew install zlib
-    brew install openssl
-    brew tap grpc/grpc
-    brew install --without-python google-protobuf
-    brew install grpc
-    brew list -l
 
-    # Install per-language modules/extensions on top of core grpc
-    #
-    # If a command below needs root access, the binary had been added to
-    # /etc/sudoers. This step needs to be repeated if we add more mac instances
-    # to our jenkins project.
-    #
-    # Examples (lines that needed to be added to /etc/sudoers):
-    # + Defaults        env_keep += "CFLAGS CXXFLAGS LDFLAGS enable_grpc"
-    # + jenkinsnode1 ALL=(ALL) NOPASSWD: /usr/bin/pecl, /usr/local/bin/pip,
-    # +   /usr/local/bin/npm
+    # Set up right environment for each language
     case $language in
-      *core*) ;;
       *python*)
-        sudo CFLAGS=-I$brew_root/include LDFLAGS=-L$brew_root/lib pip install grpcio
-        pip list | grep grpcio
-        echo 'y' | sudo pip uninstall grpcio
+        rm -rf jenkins_python_venv
+        virtualenv jenkins_python_venv
+        source jenkins_python_venv/bin/activate
         ;;
       *nodejs*)
-        sudo CXXFLAGS=-I$brew_root/include LDFLAGS=-L$brew_root/lib npm install grpc
-        npm list | grep grpc
-        sudo npm uninstall grpc
+        export PATH=$HOME/.nvm/versions/node/v0.12.7/bin:$PATH
+        ;;
+      *ruby*)
+        export PATH=/usr/local/rvm/rubies/ruby-2.2.1/bin:$PATH
+        ;;
+      *php*)
+        export CFLAGS="-Wno-parentheses-equality"
+        ;;
+    esac
+
+    # Run our homebrew installation script
+    bash -c "$command"
+
+    # Uninstall / clean up per-language modules/extensions after the test
+    case $language in
+      *python*)
+        deactivate
+        rm -rf jenkins_python_venv
+        ;;
+      *nodejs*)
+        npm list -g | grep grpc
+        npm uninstall -g grpc
         ;;
       *ruby*)
-        gem install grpc -- --with-grpc-dir=$brew_root
         gem list | grep grpc
         gem uninstall grpc
         ;;
       *php*)
-        sudo enable_grpc=$brew_root CFLAGS="-Wno-parentheses-equality" pecl install grpc-alpha
-        pecl list | grep grpc
-        sudo pecl uninstall grpc
-        ;;
-      *)
-        echo "Unsupported language $language"
-        exit 1
+        rm grpc.so
         ;;
     esac
 
-    # clean up
-    cd ~/ 
+    # Clean up
     rm -rf $brew_root
 
-    # Make sure the system brew installation is still unaffected
-    export PATH=$OLD_PATH
+    echo "Formulas installed by system-wide homebrew (after, should be unaffected)"
+    export PATH=$ORIGINAL_PATH
     brew list -l
 
   else
diff --git a/tools/run_tests/run_csharp.sh b/tools/run_tests/run_csharp.sh
index 752e83ef70..c0fedca193 100755
--- a/tools/run_tests/run_csharp.sh
+++ b/tools/run_tests/run_csharp.sh
@@ -32,6 +32,8 @@ set -ex
 
 CONFIG=${CONFIG:-opt}
 
+NUNIT_CONSOLE="mono packages/NUnit.Runners.2.6.4/tools/nunit-console.exe"
+
 if [ "$CONFIG" = "dbg" ]
 then
   MSBUILD_CONFIG="Debug"
@@ -46,6 +48,7 @@ root=`pwd`
 cd src/csharp
 
 export LD_LIBRARY_PATH=$root/libs/$CONFIG
-nunit-console -labels "$1/bin/$MSBUILD_CONFIG/$1.dll"
+
+$NUNIT_CONSOLE -labels "$1/bin/$MSBUILD_CONFIG/$1.dll"
 
 
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index abddaab699..84c1099a2a 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -1187,6 +1187,21 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c++", 
+    "name": "dynamic_thread_pool_test", 
+    "src": [
+      "test/cpp/server/dynamic_thread_pool_test.cc"
+    ]
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
       "grpc++_test_util", 
       "grpc_test_util"
     ], 
@@ -9849,6 +9864,7 @@
       "include/grpc/status.h", 
       "src/core/census/context.h", 
       "src/core/census/grpc_context.h", 
+      "src/core/census/rpc_stat_id.h", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.h", 
       "src/core/channel/channel_stack.h", 
@@ -9867,7 +9883,7 @@
       "src/core/client_config/resolver_factory.h", 
       "src/core/client_config/resolver_registry.h", 
       "src/core/client_config/resolvers/dns_resolver.h", 
-      "src/core/client_config/resolvers/unix_resolver_posix.h", 
+      "src/core/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/client_config/subchannel.h", 
       "src/core/client_config/subchannel_factory.h", 
       "src/core/client_config/uri_parser.h", 
@@ -9977,6 +9993,8 @@
       "src/core/census/grpc_context.c", 
       "src/core/census/grpc_context.h", 
       "src/core/census/initialize.c", 
+      "src/core/census/record_stat.c", 
+      "src/core/census/rpc_stat_id.h", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.c", 
       "src/core/channel/channel_args.h", 
@@ -10011,8 +10029,8 @@
       "src/core/client_config/resolver_registry.h", 
       "src/core/client_config/resolvers/dns_resolver.c", 
       "src/core/client_config/resolvers/dns_resolver.h", 
-      "src/core/client_config/resolvers/unix_resolver_posix.c", 
-      "src/core/client_config/resolvers/unix_resolver_posix.h", 
+      "src/core/client_config/resolvers/sockaddr_resolver.c", 
+      "src/core/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/client_config/subchannel.c", 
       "src/core/client_config/subchannel.h", 
       "src/core/client_config/subchannel_factory.c", 
@@ -10311,6 +10329,7 @@
       "include/grpc/status.h", 
       "src/core/census/context.h", 
       "src/core/census/grpc_context.h", 
+      "src/core/census/rpc_stat_id.h", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.h", 
       "src/core/channel/channel_stack.h", 
@@ -10329,7 +10348,7 @@
       "src/core/client_config/resolver_factory.h", 
       "src/core/client_config/resolver_registry.h", 
       "src/core/client_config/resolvers/dns_resolver.h", 
-      "src/core/client_config/resolvers/unix_resolver_posix.h", 
+      "src/core/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/client_config/subchannel.h", 
       "src/core/client_config/subchannel_factory.h", 
       "src/core/client_config/uri_parser.h", 
@@ -10421,6 +10440,8 @@
       "src/core/census/grpc_context.c", 
       "src/core/census/grpc_context.h", 
       "src/core/census/initialize.c", 
+      "src/core/census/record_stat.c", 
+      "src/core/census/rpc_stat_id.h", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.c", 
       "src/core/channel/channel_args.h", 
@@ -10455,8 +10476,8 @@
       "src/core/client_config/resolver_registry.h", 
       "src/core/client_config/resolvers/dns_resolver.c", 
       "src/core/client_config/resolvers/dns_resolver.h", 
-      "src/core/client_config/resolvers/unix_resolver_posix.c", 
-      "src/core/client_config/resolvers/unix_resolver_posix.h", 
+      "src/core/client_config/resolvers/sockaddr_resolver.c", 
+      "src/core/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/client_config/subchannel.c", 
       "src/core/client_config/subchannel.h", 
       "src/core/client_config/subchannel_factory.c", 
@@ -10646,6 +10667,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/dynamic_thread_pool.h", 
       "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -10695,6 +10717,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/dynamic_thread_pool.h", 
       "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -10745,6 +10768,7 @@
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
+      "src/cpp/server/dynamic_thread_pool.cc", 
       "src/cpp/server/fixed_size_thread_pool.cc", 
       "src/cpp/server/insecure_server_credentials.cc", 
       "src/cpp/server/secure_server_credentials.cc", 
@@ -10783,7 +10807,6 @@
       "test/cpp/util/echo.pb.h", 
       "test/cpp/util/echo_duplicate.grpc.pb.h", 
       "test/cpp/util/echo_duplicate.pb.h", 
-      "test/cpp/util/fake_credentials.h", 
       "test/cpp/util/messages.grpc.pb.h", 
       "test/cpp/util/messages.pb.h", 
       "test/cpp/util/subprocess.h"
@@ -10795,8 +10818,6 @@
       "test/cpp/util/cli_call.h", 
       "test/cpp/util/create_test_channel.cc", 
       "test/cpp/util/create_test_channel.h", 
-      "test/cpp/util/fake_credentials.cc", 
-      "test/cpp/util/fake_credentials.h", 
       "test/cpp/util/subprocess.cc", 
       "test/cpp/util/subprocess.h"
     ]
@@ -10820,6 +10841,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/dynamic_thread_pool.h", 
       "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -10866,6 +10888,7 @@
       "include/grpc++/config_protobuf.h", 
       "include/grpc++/create_channel.h", 
       "include/grpc++/credentials.h", 
+      "include/grpc++/dynamic_thread_pool.h", 
       "include/grpc++/fixed_size_thread_pool.h", 
       "include/grpc++/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -10910,6 +10933,7 @@
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
+      "src/cpp/server/dynamic_thread_pool.cc", 
       "src/cpp/server/fixed_size_thread_pool.cc", 
       "src/cpp/server/insecure_server_credentials.cc", 
       "src/cpp/server/server.cc", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 98ef004c4b..b8a074534f 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -678,6 +678,15 @@
   {
     "flaky": false, 
     "language": "c++", 
+    "name": "dynamic_thread_pool_test", 
+    "platforms": [
+      "windows", 
+      "posix"
+    ]
+  }, 
+  {
+    "flaky": false, 
+    "language": "c++", 
     "name": "end2end_test", 
     "platforms": [
       "windows", 
diff --git a/vsprojects/grpc++/grpc++.vcxproj b/vsprojects/grpc++/grpc++.vcxproj
index 2d13bf046b..51b91c6434 100644
--- a/vsprojects/grpc++/grpc++.vcxproj
+++ b/vsprojects/grpc++/grpc++.vcxproj
@@ -159,6 +159,7 @@
     <ClInclude Include="..\..\include\grpc++\config_protobuf.h" />
     <ClInclude Include="..\..\include\grpc++\create_channel.h" />
     <ClInclude Include="..\..\include\grpc++\credentials.h" />
+    <ClInclude Include="..\..\include\grpc++\dynamic_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\generic_stub.h" />
     <ClInclude Include="..\..\include\grpc++\impl\call.h" />
@@ -235,6 +236,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\dynamic_thread_pool.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
diff --git a/vsprojects/grpc++/grpc++.vcxproj.filters b/vsprojects/grpc++/grpc++.vcxproj.filters
index c5d8db57ae..85b743a8fb 100644
--- a/vsprojects/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/grpc++/grpc++.vcxproj.filters
@@ -61,6 +61,9 @@
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\dynamic_thread_pool.cc">
+      <Filter>src\cpp\server</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -132,6 +135,9 @@
     <ClInclude Include="..\..\include\grpc++\credentials.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\dynamic_thread_pool.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
index f03715b353..6886bbc2a0 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -159,6 +159,7 @@
     <ClInclude Include="..\..\include\grpc++\config_protobuf.h" />
     <ClInclude Include="..\..\include\grpc++\create_channel.h" />
     <ClInclude Include="..\..\include\grpc++\credentials.h" />
+    <ClInclude Include="..\..\include\grpc++\dynamic_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h" />
     <ClInclude Include="..\..\include\grpc++\generic_stub.h" />
     <ClInclude Include="..\..\include\grpc++\impl\call.h" />
@@ -222,6 +223,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\dynamic_thread_pool.cc">
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
     </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\insecure_server_credentials.cc">
diff --git a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index 8f7f3bcd5e..7f109a2557 100644
--- a/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -46,6 +46,9 @@
     <ClCompile Include="..\..\src\cpp\server\create_default_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\cpp\server\dynamic_thread_pool.cc">
+      <Filter>src\cpp\server</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\cpp\server\fixed_size_thread_pool.cc">
       <Filter>src\cpp\server</Filter>
     </ClCompile>
@@ -117,6 +120,9 @@
     <ClInclude Include="..\..\include\grpc++\credentials.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\grpc++\dynamic_thread_pool.h">
+      <Filter>include\grpc++</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\grpc++\fixed_size_thread_pool.h">
       <Filter>include\grpc++</Filter>
     </ClInclude>
diff --git a/vsprojects/grpc/grpc.vcxproj b/vsprojects/grpc/grpc.vcxproj
index 6f929a72c7..744627e388 100644
--- a/vsprojects/grpc/grpc.vcxproj
+++ b/vsprojects/grpc/grpc.vcxproj
@@ -192,7 +192,7 @@
     <ClInclude Include="..\..\src\core\client_config\resolver_factory.h" />
     <ClInclude Include="..\..\src\core\client_config\resolver_registry.h" />
     <ClInclude Include="..\..\src\core\client_config\resolvers\dns_resolver.h" />
-    <ClInclude Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.h" />
+    <ClInclude Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.h" />
     <ClInclude Include="..\..\src\core\client_config\subchannel.h" />
     <ClInclude Include="..\..\src\core\client_config\subchannel_factory.h" />
     <ClInclude Include="..\..\src\core\client_config\uri_parser.h" />
@@ -270,6 +270,7 @@
     <ClInclude Include="..\..\src\core\transport\transport.h" />
     <ClInclude Include="..\..\src\core\transport\transport_impl.h" />
     <ClInclude Include="..\..\src\core\census\context.h" />
+    <ClInclude Include="..\..\src\core\census\rpc_stat_id.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\core\httpcli\format_request.c">
@@ -354,7 +355,7 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\resolvers\dns_resolver.c">
     </ClCompile>
-    <ClCompile Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.c">
+    <ClCompile Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.c">
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\subchannel.c">
     </ClCompile>
@@ -542,6 +543,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\census\initialize.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\record_stat.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\gpr\gpr.vcxproj">
diff --git a/vsprojects/grpc/grpc.vcxproj.filters b/vsprojects/grpc/grpc.vcxproj.filters
index 0c388222c2..84a7823b2d 100644
--- a/vsprojects/grpc/grpc.vcxproj.filters
+++ b/vsprojects/grpc/grpc.vcxproj.filters
@@ -124,7 +124,7 @@
     <ClCompile Include="..\..\src\core\client_config\resolvers\dns_resolver.c">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.c">
+    <ClCompile Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.c">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\subchannel.c">
@@ -406,6 +406,9 @@
     <ClCompile Include="..\..\src\core\census\initialize.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\record_stat.c">
+      <Filter>src\core\census</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc\grpc_security.h">
@@ -539,7 +542,7 @@
     <ClInclude Include="..\..\src\core\client_config\resolvers\dns_resolver.h">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.h">
+    <ClInclude Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.h">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\core\client_config\subchannel.h">
@@ -773,6 +776,9 @@
     <ClInclude Include="..\..\src\core\census\context.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\core\census\rpc_stat_id.h">
+      <Filter>src\core\census</Filter>
+    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>
diff --git a/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj
index 753f3424b3..a5730235fb 100644
--- a/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj
@@ -173,7 +173,7 @@
     <ClInclude Include="..\..\src\core\client_config\resolver_factory.h" />
     <ClInclude Include="..\..\src\core\client_config\resolver_registry.h" />
     <ClInclude Include="..\..\src\core\client_config\resolvers\dns_resolver.h" />
-    <ClInclude Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.h" />
+    <ClInclude Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.h" />
     <ClInclude Include="..\..\src\core\client_config\subchannel.h" />
     <ClInclude Include="..\..\src\core\client_config\subchannel_factory.h" />
     <ClInclude Include="..\..\src\core\client_config\uri_parser.h" />
@@ -251,6 +251,7 @@
     <ClInclude Include="..\..\src\core\transport\transport.h" />
     <ClInclude Include="..\..\src\core\transport\transport_impl.h" />
     <ClInclude Include="..\..\src\core\census\context.h" />
+    <ClInclude Include="..\..\src\core\census\rpc_stat_id.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\core\surface\init_unsecure.c">
@@ -289,7 +290,7 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\resolvers\dns_resolver.c">
     </ClCompile>
-    <ClCompile Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.c">
+    <ClCompile Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.c">
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\subchannel.c">
     </ClCompile>
@@ -477,6 +478,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\census\initialize.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\record_stat.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\gpr\gpr.vcxproj">
diff --git a/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters
index 1b312cca51..c7790431df 100644
--- a/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -55,7 +55,7 @@
     <ClCompile Include="..\..\src\core\client_config\resolvers\dns_resolver.c">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.c">
+    <ClCompile Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.c">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClCompile>
     <ClCompile Include="..\..\src\core\client_config\subchannel.c">
@@ -337,6 +337,9 @@
     <ClCompile Include="..\..\src\core\census\initialize.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\record_stat.c">
+      <Filter>src\core\census</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc\byte_buffer.h">
@@ -416,7 +419,7 @@
     <ClInclude Include="..\..\src\core\client_config\resolvers\dns_resolver.h">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\core\client_config\resolvers\unix_resolver_posix.h">
+    <ClInclude Include="..\..\src\core\client_config\resolvers\sockaddr_resolver.h">
       <Filter>src\core\client_config\resolvers</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\core\client_config\subchannel.h">
@@ -650,6 +653,9 @@
     <ClInclude Include="..\..\src\core\census\context.h">
       <Filter>src\core\census</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\core\census\rpc_stat_id.h">
+      <Filter>src\core\census</Filter>
+    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>