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

.gitignore

@@ -96,10 +96,17 @@ DerivedData
 Pods/
 
 # Artifacts directory
-artifacts/
+/artifacts/
 
 # Git generated files for conflicting
 *.orig
 
 # IDE specific folder for JetBrains IDEs
 .idea/
+
+# Blaze files
+bazel-bin
+bazel-genfiles
+bazel-grpc
+bazel-out
+bazel-testlogs

.gitmodules

@@ -20,3 +20,6 @@
 [submodule "third_party/benchmark"]
 	path = third_party/benchmark
 	url = https://github.com/google/benchmark
+[submodule "third_party/boringssl-with-bazel"]
+	path = third_party/boringssl-with-bazel
+	url = https://boringssl.googlesource.com/boringssl

CMakeLists.txt

@@ -66,7 +66,13 @@ set_property(CACHE gRPC_PROTOBUF_PROVIDER PROPERTY STRINGS "module" "package")
 set(gRPC_USE_PROTO_LITE OFF CACHE BOOL "Use the protobuf-lite library")
 
 if (MSVC)
-  add_definitions( -D_WIN32_WINNT=0x600 )
+  add_definitions(-D_WIN32_WINNT=0x600 -D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS)
+  # needed to compile boringssl
+  add_definitions(/wd4464 /wd4623 /wd4668 /wd4701 /wd4702 /wd4777 /wd5027)
+  # needed to compile protobuf
+  add_definitions(/wd4065 /wd4506)
+  # TODO(jtattermusch): revisit C4267 occurrences throughout the code
+  add_definitions(/wd4267)
 endif()
 
 if (gRPC_USE_PROTO_LITE)
@@ -292,6 +298,8 @@ add_library(grpc
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -530,6 +538,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -573,6 +582,8 @@ add_library(grpc_cronet
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -781,6 +792,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -825,6 +837,8 @@ add_library(grpc_unsecure
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -1032,6 +1046,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1195,6 +1210,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1292,6 +1308,8 @@ add_library(grpc++_cronet
   src/core/lib/channel/connected_channel.c
   src/core/lib/channel/deadline_filter.c
   src/core/lib/channel/handshaker.c
+  src/core/lib/channel/handshaker_factory.c
+  src/core/lib/channel/handshaker_registry.c
   src/core/lib/channel/http_client_filter.c
   src/core/lib/channel/http_server_filter.c
   src/core/lib/channel/message_size_filter.c
@@ -1528,6 +1546,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1570,45 +1589,6 @@ if (gRPC_INSTALL)
 endif()
 
   
-add_library(grpc++_reflection
-  src/cpp/ext/proto_server_reflection.cc
-  src/cpp/ext/proto_server_reflection_plugin.cc
-  src/proto/grpc/reflection/v1alpha/reflection.proto
-)
-
-target_include_directories(grpc++_reflection
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PRIVATE ${BORINGSSL_ROOT_DIR}/include
-  PRIVATE ${PROTOBUF_ROOT_DIR}/src
-  PRIVATE ${ZLIB_INCLUDE_DIR}
-  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-)
-
-target_link_libraries(grpc++_reflection
-  grpc++
-)
-
-foreach(_hdr
-  include/grpc++/ext/proto_server_reflection_plugin.h
-)
-  string(REPLACE "include/" "" _path ${_hdr})
-  get_filename_component(_path ${_path} PATH)
-  install(FILES ${_hdr}
-    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${_path}"
-  )
-endforeach()
-
-  
-if (gRPC_INSTALL)
-  install(TARGETS grpc++_reflection EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
-  
 add_library(grpc++_unsecure
   src/cpp/client/insecure_credentials.cc
   src/cpp/common/insecure_create_auth_context.cc
@@ -1734,6 +1714,7 @@ foreach(_hdr
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
   include/grpc/impl/codegen/connectivity_state.h
+  include/grpc/impl/codegen/exec_ctx_fwd.h
   include/grpc/impl/codegen/grpc_types.h
   include/grpc/impl/codegen/propagation_bits.h
   include/grpc/impl/codegen/status.h
@@ -1808,35 +1789,6 @@ if (gRPC_INSTALL)
   )
 endif()
 
-  
-add_library(grpc_csharp_ext
-  src/csharp/ext/grpc_csharp_ext.c
-)
-
-target_include_directories(grpc_csharp_ext
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
-  PRIVATE ${BORINGSSL_ROOT_DIR}/include
-  PRIVATE ${PROTOBUF_ROOT_DIR}/src
-  PRIVATE ${ZLIB_INCLUDE_DIR}
-  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
-)
-
-target_link_libraries(grpc_csharp_ext
-  grpc
-  gpr
-)
-
-
-  
-if (gRPC_INSTALL)
-  install(TARGETS grpc_csharp_ext EXPORT gRPCTargets
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-endif()
-
 
 
 add_executable(gen_hpack_tables

Makefile

@@ -292,12 +292,19 @@ AR = libtool -no_warning_for_no_symbols -o
 endif
 STRIP ?= strip -x
 else
+ifeq ($(SYSTEM),MINGW32)
+ifeq ($(origin AR), default)
+AR = ar rcs
+endif
+STRIP ?= strip --strip-unneeded
+else
 ifeq ($(origin AR), default)
 AR = ar rcs
 endif
 STRIP ?= strip
 endif
 endif
+endif
 INSTALL ?= install
 RM ?= rm -f
 PKG_CONFIG ?= pkg-config
@@ -479,6 +486,7 @@ CPP_PC_TEMPLATE = prefix=$(prefix),exec_prefix=\$${prefix},includedir=\$${prefix
 CSHARP_PC_TEMPLATE = prefix=$(prefix),exec_prefix=\$${prefix},includedir=\$${prefix}/include,libdir=\$${exec_prefix}/lib,,Name: $(PC_NAME),Description: $(PC_DESCRIPTION),Version: $(CSHARP_VERSION),Cflags: -I\$${includedir} $(PC_CFLAGS),Requires.private: $(PC_REQUIRES_PRIVATE),Libs: -L\$${libdir} $(PC_LIB),Libs.private: $(PC_LIBS_PRIVATE)
 
 ifeq ($(SYSTEM),MINGW32)
+EXECUTABLE_SUFFIX = .exe
 SHARED_EXT_CORE = dll
 SHARED_EXT_CPP = dll
 SHARED_EXT_CSHARP = dll
@@ -487,6 +495,7 @@ SHARED_VERSION_CORE = -2
 SHARED_VERSION_CPP = -1
 SHARED_VERSION_CSHARP = -1
 else ifeq ($(SYSTEM),Darwin)
+EXECUTABLE_SUFFIX = 
 SHARED_EXT_CORE = dylib
 SHARED_EXT_CPP = dylib
 SHARED_EXT_CSHARP = dylib
@@ -495,6 +504,7 @@ SHARED_VERSION_CORE =
 SHARED_VERSION_CPP =
 SHARED_VERSION_CSHARP =
 else
+EXECUTABLE_SUFFIX = 
 SHARED_EXT_CORE = so.$(CORE_VERSION)
 SHARED_EXT_CPP = so.$(CPP_VERSION)
 SHARED_EXT_CSHARP = so.$(CSHARP_VERSION)
@@ -1013,6 +1023,9 @@ lame_client_test: $(BINDIR)/$(CONFIG)/lame_client_test
 lb_policies_test: $(BINDIR)/$(CONFIG)/lb_policies_test
 load_file_test: $(BINDIR)/$(CONFIG)/load_file_test
 low_level_ping_pong_benchmark: $(BINDIR)/$(CONFIG)/low_level_ping_pong_benchmark
+memory_profile_client: $(BINDIR)/$(CONFIG)/memory_profile_client
+memory_profile_server: $(BINDIR)/$(CONFIG)/memory_profile_server
+memory_profile_test: $(BINDIR)/$(CONFIG)/memory_profile_test
 message_compress_test: $(BINDIR)/$(CONFIG)/message_compress_test
 mlog_test: $(BINDIR)/$(CONFIG)/mlog_test
 multiple_server_queues_test: $(BINDIR)/$(CONFIG)/multiple_server_queues_test
@@ -1085,6 +1098,7 @@ grpc_ruby_plugin: $(BINDIR)/$(CONFIG)/grpc_ruby_plugin
 grpc_tool_test: $(BINDIR)/$(CONFIG)/grpc_tool_test
 grpclb_api_test: $(BINDIR)/$(CONFIG)/grpclb_api_test
 grpclb_test: $(BINDIR)/$(CONFIG)/grpclb_test
+http2_client: $(BINDIR)/$(CONFIG)/http2_client
 hybrid_end2end_test: $(BINDIR)/$(CONFIG)/hybrid_end2end_test
 interop_client: $(BINDIR)/$(CONFIG)/interop_client
 interop_server: $(BINDIR)/$(CONFIG)/interop_server
@@ -1260,9 +1274,9 @@ pc_cxx: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++.pc
 pc_cxx_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc
 
 ifeq ($(EMBED_OPENSSL),true)
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 else
-privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
+privatelibs_cxx:  $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a $(LIBDIR)/$(CONFIG)/libgrpc++_test.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a $(LIBDIR)/$(CONFIG)/libinterop_client_main.a $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a $(LIBDIR)/$(CONFIG)/libinterop_server_main.a $(LIBDIR)/$(CONFIG)/libqps.a $(LIBDIR)/$(CONFIG)/libbenchmark.a
 endif
 
 
@@ -1348,6 +1362,9 @@ buildtests_c: privatelibs_c \
   $(BINDIR)/$(CONFIG)/lame_client_test \
   $(BINDIR)/$(CONFIG)/lb_policies_test \
   $(BINDIR)/$(CONFIG)/load_file_test \
+  $(BINDIR)/$(CONFIG)/memory_profile_client \
+  $(BINDIR)/$(CONFIG)/memory_profile_server \
+  $(BINDIR)/$(CONFIG)/memory_profile_test \
   $(BINDIR)/$(CONFIG)/message_compress_test \
   $(BINDIR)/$(CONFIG)/mlog_test \
   $(BINDIR)/$(CONFIG)/multiple_server_queues_test \
@@ -1467,6 +1484,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1560,6 +1578,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/grpc_tool_test \
   $(BINDIR)/$(CONFIG)/grpclb_api_test \
   $(BINDIR)/$(CONFIG)/grpclb_test \
+  $(BINDIR)/$(CONFIG)/http2_client \
   $(BINDIR)/$(CONFIG)/hybrid_end2end_test \
   $(BINDIR)/$(CONFIG)/interop_client \
   $(BINDIR)/$(CONFIG)/interop_server \
@@ -1739,6 +1758,8 @@ test_c: buildtests_c
 	$(Q) $(BINDIR)/$(CONFIG)/lame_client_test || ( echo test lame_client_test failed ; exit 1 )
 	$(E) "[RUN]     Testing load_file_test"
 	$(Q) $(BINDIR)/$(CONFIG)/load_file_test || ( echo test load_file_test failed ; exit 1 )
+	$(E) "[RUN]     Testing memory_profile_test"
+	$(Q) $(BINDIR)/$(CONFIG)/memory_profile_test || ( echo test memory_profile_test failed ; exit 1 )
 	$(E) "[RUN]     Testing message_compress_test"
 	$(Q) $(BINDIR)/$(CONFIG)/message_compress_test || ( echo test message_compress_test failed ; exit 1 )
 	$(E) "[RUN]     Testing multiple_server_queues_test"
@@ -2039,7 +2060,7 @@ $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc: src/proto/grpc/lb/v1/load_ba
 $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc: src/proto/grpc/lb/v1/load_balancer.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2054,7 +2075,7 @@ $(GENDIR)/src/proto/grpc/reflection/v1alpha/reflection.pb.cc: src/proto/grpc/ref
 $(GENDIR)/src/proto/grpc/reflection/v1alpha/reflection.grpc.pb.cc: src/proto/grpc/reflection/v1alpha/reflection.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2069,7 +2090,7 @@ $(GENDIR)/src/proto/grpc/testing/compiler_test.pb.cc: src/proto/grpc/testing/com
 $(GENDIR)/src/proto/grpc/testing/compiler_test.grpc.pb.cc: src/proto/grpc/testing/compiler_test.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2084,7 +2105,7 @@ $(GENDIR)/src/proto/grpc/testing/control.pb.cc: src/proto/grpc/testing/control.p
 $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc: src/proto/grpc/testing/control.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2099,7 +2120,7 @@ $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc: src/proto/grpc/
 $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc: src/proto/grpc/testing/duplicate/echo_duplicate.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2114,7 +2135,7 @@ $(GENDIR)/src/proto/grpc/testing/echo.pb.cc: src/proto/grpc/testing/echo.proto $
 $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc: src/proto/grpc/testing/echo.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2129,7 +2150,7 @@ $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc: src/proto/grpc/testing/ech
 $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc: src/proto/grpc/testing/echo_messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2144,7 +2165,7 @@ $(GENDIR)/src/proto/grpc/testing/empty.pb.cc: src/proto/grpc/testing/empty.proto
 $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc: src/proto/grpc/testing/empty.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2159,7 +2180,7 @@ $(GENDIR)/src/proto/grpc/testing/messages.pb.cc: src/proto/grpc/testing/messages
 $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc: src/proto/grpc/testing/messages.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2174,7 +2195,7 @@ $(GENDIR)/src/proto/grpc/testing/metrics.pb.cc: src/proto/grpc/testing/metrics.p
 $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc: src/proto/grpc/testing/metrics.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2189,7 +2210,7 @@ $(GENDIR)/src/proto/grpc/testing/payloads.pb.cc: src/proto/grpc/testing/payloads
 $(GENDIR)/src/proto/grpc/testing/payloads.grpc.pb.cc: src/proto/grpc/testing/payloads.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2204,7 +2225,7 @@ $(GENDIR)/src/proto/grpc/testing/services.pb.cc: src/proto/grpc/testing/services
 $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc: src/proto/grpc/testing/services.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2219,7 +2240,7 @@ $(GENDIR)/src/proto/grpc/testing/stats.pb.cc: src/proto/grpc/testing/stats.proto
 $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc: src/proto/grpc/testing/stats.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 ifeq ($(NO_PROTOC),true)
@@ -2234,7 +2255,7 @@ $(GENDIR)/src/proto/grpc/testing/test.pb.cc: src/proto/grpc/testing/test.proto $
 $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc: src/proto/grpc/testing/test.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc
 	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin $<
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
 endif
 
 
@@ -2327,36 +2348,36 @@ install-static_cxx: static_cxx strip-static_cxx install-pkg-config_cxx
 install-shared_c: shared_c strip-shared_c install-pkg-config_c
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgpr-imp.a $(prefix)/lib/libgpr-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgpr.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgpr.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc-imp.a $(prefix)/lib/libgrpc-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_cronet-imp.a $(prefix)/lib/libgrpc_cronet-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_cronet.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/$(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure-imp.a $(prefix)/lib/libgrpc_unsecure-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a $(prefix)/lib/libgrpc_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(prefix)/lib/libgrpc_unsecure.so
@@ -2371,36 +2392,36 @@ endif
 install-shared_cxx: shared_cxx strip-shared_cxx install-shared_c install-pkg-config_cxx
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++-imp.a $(prefix)/lib/libgrpc++-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet-imp.a $(prefix)/lib/libgrpc++_cronet-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_cronet.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_cronet.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection-imp.a $(prefix)/lib/libgrpc++_reflection-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_reflection.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_reflection.so
 endif
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure-imp.a $(prefix)/lib/libgrpc++_unsecure-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a $(prefix)/lib/libgrpc++_unsecure.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(prefix)/lib/libgrpc++_unsecure.so
@@ -2415,9 +2436,9 @@ endif
 install-shared_csharp: shared_csharp strip-shared_csharp
 	$(E) "[INSTALL] Installing $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP)"
 	$(Q) $(INSTALL) -d $(prefix)/lib
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP)
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP)
 ifeq ($(SYSTEM),MINGW32)
-	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext-imp.a $(prefix)/lib/libgrpc_csharp_ext-imp.a
+	$(Q) $(INSTALL) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a $(prefix)/lib/libgrpc_csharp_ext.a
 else ifneq ($(SYSTEM),Darwin)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so.2
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(prefix)/lib/libgrpc_csharp_ext.so
@@ -2430,9 +2451,6 @@ endif
 
 
 install-plugins: $(PROTOC_PLUGINS)
-ifeq ($(SYSTEM),MINGW32)
-	$(Q) false
-else
 	$(E) "[INSTALL] Installing grpc protoc plugins"
 	$(Q) $(INSTALL) -d $(prefix)/bin
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_cpp_plugin $(prefix)/bin/grpc_cpp_plugin
@@ -2448,7 +2466,6 @@ else
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_python_plugin $(prefix)/bin/grpc_python_plugin
 	$(Q) $(INSTALL) -d $(prefix)/bin
 	$(Q) $(INSTALL) $(BINDIR)/$(CONFIG)/grpc_ruby_plugin $(prefix)/bin/grpc_ruby_plugin
-endif
 
 install-pkg-config_c: pc_c pc_c_unsecure
 	$(E) "[INSTALL] Installing C pkg-config files"
@@ -2578,17 +2595,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared gpr.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.2 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -2631,6 +2648,8 @@ LIBGRPC_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -2852,6 +2871,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -2898,17 +2918,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -2930,6 +2950,8 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3122,6 +3144,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3168,17 +3191,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc_cronet.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -3219,6 +3242,8 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3338,6 +3363,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3436,6 +3462,8 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -3628,6 +3656,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3662,17 +3691,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc_unsecure.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.2
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.2
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
 endif
 endif
 
@@ -3872,6 +3901,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -3922,20 +3952,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4015,6 +4045,8 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \
@@ -4234,6 +4266,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4294,20 +4327,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_cronet.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_cronet.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr-imp -lgrpc_cronet-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_cronet$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_cronet.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(LDLIBS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_cronet
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4417,20 +4450,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc++.$(SHARED_EXT_CPP) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_reflection.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++$(SHARED_VERSION_CPP)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc++.$(SHARED_EXT_CPP) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_reflection.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgrpc++
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4589,6 +4622,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4767,6 +4801,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/byte_buffer_reader.h \
     include/grpc/impl/codegen/compression_types.h \
     include/grpc/impl/codegen/connectivity_state.h \
+    include/grpc/impl/codegen/exec_ctx_fwd.h \
     include/grpc/impl/codegen/grpc_types.h \
     include/grpc/impl/codegen/propagation_bits.h \
     include/grpc/impl/codegen/status.h \
@@ -4807,20 +4842,20 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_unsecure.$(SHARED_EXT_CORE)
+$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared grpc++_unsecure.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr-imp -lgrpc_unsecure-imp
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_unsecure$(SHARED_VERSION_CORE)-dll
 else
 $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgpr.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.$(SHARED_EXT_CORE)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
 else
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_unsecure.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(LDLIBS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) -lgpr -lgrpc_unsecure
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).so
 endif
 endif
 
@@ -4934,6 +4969,59 @@ ifneq ($(NO_DEPS),true)
 endif
 
 
+LIBHTTP2_CLIENT_MAIN_SRC = \
+    $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc \
+    $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc \
+    $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc \
+    test/cpp/interop/http2_client.cc \
+
+PUBLIC_HEADERS_CXX += \
+
+LIBHTTP2_CLIENT_MAIN_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBHTTP2_CLIENT_MAIN_SRC))))
+
+
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure libraries if you don't have OpenSSL.
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: openssl_dep_error
+
+
+else
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build a C++ library if you don't have protobuf - a bit overreached, but still okay.
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: protobuf_dep_error
+
+
+else
+
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBHTTP2_CLIENT_MAIN_OBJS) 
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBHTTP2_CLIENT_MAIN_OBJS) 
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a
+endif
+
+
+
+
+endif
+
+endif
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(LIBHTTP2_CLIENT_MAIN_OBJS:.o=.dep)
+endif
+endif
+$(OBJDIR)/$(CONFIG)/test/cpp/interop/http2_client.o: $(GENDIR)/src/proto/grpc/testing/empty.pb.cc $(GENDIR)/src/proto/grpc/testing/empty.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
+
+
 LIBINTEROP_CLIENT_HELPER_SRC = \
     $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc \
     test/cpp/interop/client_helper.cc \
@@ -5300,17 +5388,17 @@ ifeq ($(SYSTEM),MINGW32)
 $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared grpc_csharp_ext.def -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,--output-def=$(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).def -Wl,--out-implib=$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP)-dll.a -o $(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
+	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
 else
 	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_csharp_ext.so.2 -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LDLIBS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so.1
-	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so.1
+	$(Q) ln -sf $(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).so
 endif
 endif
 
@@ -10272,6 +10360,102 @@ endif
 endif
 
 
+MEMORY_PROFILE_CLIENT_SRC = \
+    test/core/memory_usage/client.c \
+
+MEMORY_PROFILE_CLIENT_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_CLIENT_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_client: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_client: $(MEMORY_PROFILE_CLIENT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_CLIENT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_client
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/client.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_client: $(MEMORY_PROFILE_CLIENT_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_CLIENT_OBJS:.o=.dep)
+endif
+endif
+
+
+MEMORY_PROFILE_SERVER_SRC = \
+    test/core/memory_usage/server.c \
+
+MEMORY_PROFILE_SERVER_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_SERVER_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_server: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_server: $(MEMORY_PROFILE_SERVER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_SERVER_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_server
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/server.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_server: $(MEMORY_PROFILE_SERVER_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_SERVER_OBJS:.o=.dep)
+endif
+endif
+
+
+MEMORY_PROFILE_TEST_SRC = \
+    test/core/memory_usage/memory_usage_test.c \
+
+MEMORY_PROFILE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(MEMORY_PROFILE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/memory_profile_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/memory_profile_test: $(MEMORY_PROFILE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(MEMORY_PROFILE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/memory_profile_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/memory_usage/memory_usage_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_memory_profile_test: $(MEMORY_PROFILE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(MEMORY_PROFILE_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 MESSAGE_COMPRESS_TEST_SRC = \
     test/core/compression/message_compress_test.c \
 
@@ -12888,6 +13072,37 @@ endif
 $(OBJDIR)/$(CONFIG)/test/cpp/grpclb/grpclb_test.o: $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.pb.cc $(GENDIR)/src/proto/grpc/lb/v1/load_balancer.grpc.pb.cc
 
 
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/http2_client: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(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)/http2_client: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/http2_client:  $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS)  $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/http2_client
+
+endif
+
+endif
+
+
+
+
 HYBRID_END2END_TEST_SRC = \
     test/cpp/end2end/hybrid_end2end_test.cc \
 
@@ -16805,6 +17020,7 @@ test/core/util/test_tcp_server.c: $(OPENSSL_DEP)
 test/cpp/end2end/test_service_impl.cc: $(OPENSSL_DEP)
 test/cpp/interop/client.cc: $(OPENSSL_DEP)
 test/cpp/interop/client_helper.cc: $(OPENSSL_DEP)
+test/cpp/interop/http2_client.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_client.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_server.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_server_bootstrap.cc: $(OPENSSL_DEP)

README.md

@@ -17,6 +17,8 @@ See [INSTALL](INSTALL.md) for installation instructions for various platforms.
 
 See [tools/run_tests](tools/run_tests) for more guidance on how to run various test suites (e.g. unit tests, interop tests, benchmarks)
 
+See [Performance dashboard](http://performance-dot-grpc-testing.appspot.com/explore?dashboard=5712453606309888) for the performance numbers for v1.0.x.
+
 #Repository Structure & Status
 
 This repository contains source code for gRPC libraries for multiple languages written on top of shared C core library [src/core] (src/core).

WORKSPACE

@@ -0,0 +1,47 @@
+bind(
+    name = "nanopb",
+    actual = "//third_party/nanopb",
+)
+
+bind(
+    name = "libssl",
+    actual = "@submodule_boringssl//:ssl",
+)
+
+bind(
+    name = "zlib",
+    actual = "@submodule_zlib//:z",
+)
+
+bind(
+    name = "protobuf",
+    actual = "@submodule_protobuf//:protobuf",
+)
+
+bind(
+    name = "protobuf_clib",
+    actual = "@submodule_protobuf//:protoc_lib",
+)
+
+bind(
+    name = "protocol_compiler",
+    actual = "@submodule_protobuf//:protoc",
+)
+
+new_local_repository(
+    name = "submodule_boringssl",
+    path = "third_party/boringssl-with-bazel",
+    build_file = "third_party/boringssl-with-bazel/BUILD",
+)
+
+new_local_repository(
+    name = "submodule_zlib",
+    path = "third_party/zlib",
+    build_file = "third_party/zlib.BUILD",
+)
+
+new_local_repository(
+    name = "submodule_protobuf",
+    path = "third_party/protobuf",
+    build_file = "third_party/protobuf/BUILD",
+)

bazel/BUILD

@@ -0,0 +1,9 @@
+package(default_visibility = ["//:__subpackages__"])
+
+load(":cc_grpc_library.bzl", "cc_grpc_library")
+
+cc_grpc_library(
+    name = "well_known_protos",
+    srcs = "@submodule_protobuf//:well_known_protos",
+    proto_only = True,
+)

bazel/cc_grpc_library.bzl

@@ -0,0 +1,62 @@
+"""Generates and compiles C++ grpc stubs from proto_library rules."""
+
+load("//:bazel/generate_cc.bzl", "generate_cc")
+
+def cc_grpc_library(name, srcs, deps, proto_only, **kwargs):
+  """Generates C++ grpc classes from a .proto file.
+
+  Assumes the generated classes will be used in cc_api_version = 2.
+
+  Arguments:
+      name: name of rule.
+      srcs: a single proto_library, which wraps the .proto files with services.
+      deps: a list of C++ proto_library (or cc_proto_library) which provides
+        the compiled code of any message that the services depend on.
+      **kwargs: rest of arguments, e.g., compatible_with and visibility.
+  """
+  if len(srcs) > 1:
+    fail("Only one srcs value supported", "srcs")
+
+  proto_target = "_" + name + "_only"
+  codegen_target = "_" + name + "_codegen"
+  codegen_grpc_target = "_" + name + "_grpc_codegen"
+  proto_deps = ["_" + dep + "_only" for dep in deps if dep.find(':') == -1]
+  proto_deps += [dep.split(':')[0] + ':' + "_" + dep.split(':')[1] + "_only" for dep in deps if dep.find(':') != -1]
+
+  native.proto_library(
+      name = proto_target,
+      srcs = srcs,
+      deps = proto_deps,
+      **kwargs
+  )
+
+  generate_cc(
+      name = codegen_target,
+      srcs = [proto_target],
+      **kwargs
+  )
+
+  if not proto_only:
+    generate_cc(
+        name = codegen_grpc_target,
+        srcs = [proto_target],
+        plugin = "//:grpc_cpp_plugin",
+        **kwargs
+    )
+
+  if not proto_only:
+    native.cc_library(
+        name = name,
+        srcs = [":" + codegen_grpc_target, ":" + codegen_target],
+        hdrs = [":" + codegen_grpc_target, ":" + codegen_target],
+        deps = deps + ["//:grpc++", "//:grpc++_codegen_proto", "//external:protobuf"],
+        **kwargs
+    )
+  else:
+    native.cc_library(
+        name = name,
+        srcs = [":" + codegen_target],
+        hdrs = [":" + codegen_target],
+        deps = deps + ["//external:protobuf"],
+        **kwargs
+    )

bazel/generate_cc.bzl

@@ -0,0 +1,66 @@
+"""Generates C++ grpc stubs from proto_library rules.
+
+This is an internal rule used by cc_grpc_library, and shouldn't be used
+directly.
+"""
+
+def generate_cc_impl(ctx):
+  """Implementation of the generate_cc rule."""
+  protos = [f for src in ctx.attr.srcs for f in src.proto.direct_sources]
+  includes = [f for src in ctx.attr.srcs for f in src.proto.transitive_imports]
+  outs = []
+  if ctx.executable.plugin:
+    outs += [proto.basename[:-len(".proto")] + ".grpc.pb.h" for proto in protos]
+    outs += [proto.basename[:-len(".proto")] + ".grpc.pb.cc" for proto in protos]
+  else:
+    outs += [proto.basename[:-len(".proto")] + ".pb.h" for proto in protos]
+    outs += [proto.basename[:-len(".proto")] + ".pb.cc" for proto in protos]
+  out_files = [ctx.new_file(out) for out in outs]
+  # The following should be replaced with ctx.configuration.buildout
+  # whenever this is added to Skylark.
+  dir_out = out_files[0].dirname[:-len(protos[0].dirname)]
+
+  arguments = []
+  if ctx.executable.plugin:
+    arguments += ["--plugin=protoc-gen-PLUGIN=" + ctx.executable.plugin.path]
+    arguments += ["--PLUGIN_out=" + ",".join(ctx.attr.flags) + ":" + dir_out]
+  else:
+    arguments += ["--cpp_out=" + ",".join(ctx.attr.flags) + ":" + dir_out]
+  arguments += ["-I{0}={0}".format(include.path) for include in includes]
+  arguments += [proto.path for proto in protos]
+
+  ctx.action(
+      inputs = protos + includes,
+      outputs = out_files,
+      executable = ctx.executable._protoc,
+      arguments = arguments,
+  )
+
+  return struct(files=set(out_files))
+
+generate_cc = rule(
+    attrs = {
+        "srcs": attr.label_list(
+            mandatory = True,
+            non_empty = True,
+            providers = ["proto"],
+        ),
+        "plugin": attr.label(
+            executable = True,
+            providers = ["files_to_run"],
+            cfg = "host",
+        ),
+        "flags": attr.string_list(
+            mandatory = False,
+            allow_empty = True,
+        ),
+        "_protoc": attr.label(
+            default = Label("//external:protocol_compiler"),
+            executable = True,
+            cfg = "host",
+        ),
+    },
+    # We generate .h files, so we need to output to genfiles.
+    output_to_genfiles = True,
+    implementation = generate_cc_impl,
+)

bazel/grpc_build_system.bzl

@@ -0,0 +1,68 @@
+# Copyright 2016, 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.
+
+#
+# This is for the gRPC build system. This isn't intended to be used outsite of
+# the BUILD file for gRPC. It contains the mapping for the template system we
+# use to generate other platform's build system files.
+#
+
+def grpc_cc_library(name, srcs = [], public_hdrs = [], hdrs = [], external_deps = [], deps = [], standalone = False, language = "C++"):
+  copts = []
+  if language.upper() == "C":
+    copts = ["-std=c99"]
+  native.cc_library(
+    name = name,
+    srcs = srcs,
+    hdrs = hdrs + public_hdrs,
+    deps = deps + ["//external:" + dep for dep in external_deps],
+    copts = copts,
+    linkopts = ["-pthread"],
+    includes = [
+        "include"
+    ]
+  )
+
+def grpc_proto_plugin(name, srcs = [], deps = []):
+  native.cc_binary(
+    name = name,
+    srcs = srcs,
+    deps = deps,
+  )
+
+load("//:bazel/cc_grpc_library.bzl", "cc_grpc_library")
+
+def grpc_proto_library(name, srcs = [], deps = [], well_known_deps = [], has_services = True):
+  cc_grpc_library(
+    name = name,
+    srcs = srcs,
+    deps = deps,
+    proto_only = not has_services,
+  )
+

binding.gyp

@@ -37,18 +37,68 @@
 # Some of this file is built with the help of
 # https://n8.io/converting-a-c-library-to-gyp/
 {
+  'variables': {
+    'runtime%': 'node'
+  },
   'target_defaults': {
     'include_dirs': [
       '.',
       'include'
     ],
     'defines': [
-      'GRPC_UV'
+      'GPR_BACKWARDS_COMPATIBILITY_MODE'
     ],
     'conditions': [
+      ['runtime=="node"', {
+        'defines': [
+          'GRPC_UV'
+        ]
+      }],
+      ['OS!="win" and runtime=="electron"', {
+        "defines": [
+          'OPENSSL_NO_THREADS'
+        ]
+      }],
+      # This is the condition for using boringssl
+      ['OS=="win" or runtime=="electron"', {
+        "include_dirs": [
+          "third_party/boringssl/include"
+        ],
+        "defines": [
+          'OPENSSL_NO_ASM'
+        ]
+      }, {
+        # Based on logic above, we know that this must be a non-Windows system
+        'variables': {
+          # The output of "node --version" is "v[version]". We use cut to
+          # remove the first character.
+          'target%': '<!(node --version | cut -c2-)'
+        },
+        # Empirically, Node only exports ALPN symbols if its major version is >0.
+        # io.js always reports versions >0 and always exports ALPN symbols.
+        # Therefore, Node's major version will be truthy if and only if it
+        # supports ALPN. The target is "[major].[minor].[patch]". We split by
+        # periods and take the first field to get the major version.
+        'defines': [
+          'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)'
+        ],
+        'include_dirs': [
+          '<(node_root_dir)/deps/openssl/openssl/include',
+        ],
+        'conditions': [
+         ["target_arch=='ia32'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
+         }],
+         ["target_arch=='x64'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
+         }],
+         ["target_arch=='arm'", {
+             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
+         }]
+        ]
+      }],
       ['OS == "win"', {
         "include_dirs": [
-          "third_party/boringssl/include",
           "third_party/zlib"
         ],
         "defines": [
@@ -58,8 +108,6 @@
           'UNICODE',
           '_UNICODE',
           'NOMINMAX',
-          'OPENSSL_NO_ASM',
-          'GPR_BACKWARDS_COMPATIBILITY_MODE'
         ],
         "msvs_settings": {
           'VCCLCompilerTool': {
@@ -72,21 +120,8 @@
       }, { # OS != "win"
         'variables': {
           'config': '<!(echo $CONFIG)',
-          # The output of "node --version" is "v[version]". We use cut to
-          # remove the first character.
-          'target%': '<!(node --version | cut -c2-)'
         },
-          # Empirically, Node only exports ALPN symbols if its major version is >0.
-          # io.js always reports versions >0 and always exports ALPN symbols.
-          # Therefore, Node's major version will be truthy if and only if it
-          # supports ALPN. The target is "[major].[minor].[patch]". We split by
-          # periods and take the first field to get the major version.
-        'defines': [
-          'TSI_OPENSSL_ALPN_SUPPORT=<!(echo <(target) | cut -d. -f1)',
-          'GPR_BACKWARDS_COMPATIBILITY_MODE'
-        ],
         'include_dirs': [
-          '<(node_root_dir)/deps/openssl/openssl/include',
           '<(node_root_dir)/deps/zlib'
         ],
         'conditions': [
@@ -101,47 +136,14 @@
               '-fprofile-arcs'
             ]
           }
-         ],
-         ["target_arch=='ia32'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/piii" ]
-         }],
-         ["target_arch=='x64'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/k8" ]
-         }],
-         ["target_arch=='arm'", {
-             "include_dirs": [ "<(node_root_dir)/deps/openssl/config/arm" ]
-         }]
+         ]
         ]
       }]
     ]
   },
   'conditions': [
-    ['OS == "win"', {
+    ['OS=="win" or runtime=="electron"', {
       'targets': [
-        {
-          # IMPORTANT WINDOWS BUILD INFORMATION
-          # This library does not build on Windows without modifying the Node
-          # development packages that node-gyp downloads in order to build.
-          # Due to https://github.com/nodejs/node/issues/4932, the headers for
-          # BoringSSL conflict with the OpenSSL headers included by default
-          # when including the Node headers. The remedy for this is to remove
-          # the OpenSSL headers, from the downloaded Node development package,
-          # which is typically located in `.node-gyp` in your home directory.
-          'target_name': 'WINDOWS_BUILD_WARNING',
-          'actions': [
-            {
-              'action_name': 'WINDOWS_BUILD_WARNING',
-              'inputs': [
-                'package.json'
-              ],
-              'outputs': [
-                'ignore_this_part'
-              ],
-              'action': ['echo', 'IMPORTANT: Due to https://github.com/nodejs/node/issues/4932, to build this library on Windows, you must first remove <(node_root_dir)/include/node/openssl/']
-            }
-          ]
-        },
-        # Only want to compile BoringSSL and zlib under Windows
         {
           'cflags': [
             '-std=c99',
@@ -453,6 +455,34 @@
             'third_party/boringssl/ssl/tls_record.c',
           ]
         },
+      ]
+    }],
+    ['OS == "win"', {
+      'targets': [
+        {
+          # IMPORTANT WINDOWS BUILD INFORMATION
+          # This library does not build on Windows without modifying the Node
+          # development packages that node-gyp downloads in order to build.
+          # Due to https://github.com/nodejs/node/issues/4932, the headers for
+          # BoringSSL conflict with the OpenSSL headers included by default
+          # when including the Node headers. The remedy for this is to remove
+          # the OpenSSL headers, from the downloaded Node development package,
+          # which is typically located in `.node-gyp` in your home directory.
+          'target_name': 'WINDOWS_BUILD_WARNING',
+          'actions': [
+            {
+              'action_name': 'WINDOWS_BUILD_WARNING',
+              'inputs': [
+                'package.json'
+              ],
+              'outputs': [
+                'ignore_this_part'
+              ],
+              'action': ['echo', 'IMPORTANT: Due to https://github.com/nodejs/node/issues/4932, to build this library on Windows, you must first remove <(node_root_dir)/include/node/openssl/']
+            }
+          ]
+        },
+        # Only want to compile zlib under Windows
         {
           'cflags': [
             '-std=c99',
@@ -572,6 +602,8 @@
         'src/core/lib/channel/connected_channel.c',
         'src/core/lib/channel/deadline_filter.c',
         'src/core/lib/channel/handshaker.c',
+        'src/core/lib/channel/handshaker_factory.c',
+        'src/core/lib/channel/handshaker_registry.c',
         'src/core/lib/channel/http_client_filter.c',
         'src/core/lib/channel/http_server_filter.c',
         'src/core/lib/channel/message_size_filter.c',
@@ -805,6 +837,11 @@
         '-g'
       ],
       "conditions": [
+        ['OS=="win" or runtime=="electron"', {
+          'dependencies': [
+            "boringssl",
+          ]
+        }],
         ['OS=="mac"', {
           'xcode_settings': {
             'MACOSX_DEPLOYMENT_TARGET': '10.9',
@@ -816,7 +853,6 @@
         }],
         ['OS=="win"', {
           'dependencies': [
-            "boringssl",
             "z",
           ]
         }],
@@ -833,8 +869,8 @@
         "src/node/ext/call_credentials.cc",
         "src/node/ext/channel.cc",
         "src/node/ext/channel_credentials.cc",
-        "src/node/ext/completion_queue.cc",
-        "src/node/ext/completion_queue_async_worker.cc",
+        "src/node/ext/completion_queue_threadpool.cc",
+        "src/node/ext/completion_queue_uv.cc",
         "src/node/ext/node_grpc.cc",
         "src/node/ext/server.cc",
         "src/node/ext/server_credentials.cc",

build.yaml

@@ -171,6 +171,8 @@ filegroups:
   - src/core/lib/channel/context.h
   - src/core/lib/channel/deadline_filter.h
   - src/core/lib/channel/handshaker.h
+  - src/core/lib/channel/handshaker_factory.h
+  - src/core/lib/channel/handshaker_registry.h
   - src/core/lib/channel/http_client_filter.h
   - src/core/lib/channel/http_server_filter.h
   - src/core/lib/channel/message_size_filter.h
@@ -237,6 +239,7 @@ filegroups:
   - src/core/lib/json/json_reader.h
   - src/core/lib/json/json_writer.h
   - src/core/lib/slice/percent_encoding.h
+  - src/core/lib/slice/slice_internal.h
   - src/core/lib/slice/slice_string_helpers.h
   - src/core/lib/surface/api_trace.h
   - src/core/lib/surface/call.h
@@ -268,6 +271,8 @@ filegroups:
   - src/core/lib/channel/connected_channel.c
   - src/core/lib/channel/deadline_filter.c
   - src/core/lib/channel/handshaker.c
+  - src/core/lib/channel/handshaker_factory.c
+  - src/core/lib/channel/handshaker_registry.c
   - src/core/lib/channel/http_client_filter.c
   - src/core/lib/channel/http_server_filter.c
   - src/core/lib/channel/message_size_filter.c
@@ -421,6 +426,7 @@ filegroups:
   - include/grpc/impl/codegen/byte_buffer_reader.h
   - include/grpc/impl/codegen/compression_types.h
   - include/grpc/impl/codegen/connectivity_state.h
+  - include/grpc/impl/codegen/exec_ctx_fwd.h
   - include/grpc/impl/codegen/grpc_types.h
   - include/grpc/impl/codegen/propagation_bits.h
   - include/grpc/impl/codegen/status.h
@@ -1211,6 +1217,22 @@ libs:
   vs_project_guid: '{B6E81D84-2ACB-41B8-8781-493A944C7817}'
   vs_props:
   - protoc
+- name: http2_client_main
+  build: private
+  language: c++
+  headers:
+  - test/cpp/interop/http2_client.h
+  src:
+  - src/proto/grpc/testing/empty.proto
+  - src/proto/grpc/testing/messages.proto
+  - src/proto/grpc/testing/test.proto
+  - test/cpp/interop/http2_client.cc
+  deps:
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - grpc++_test_config
 - name: interop_client_helper
   build: private
   language: c++
@@ -1253,6 +1275,7 @@ libs:
   src:
   - test/cpp/interop/server_helper.cc
   deps:
+  - grpc++_test_util
   - grpc_test_util
   - grpc++
   - grpc
@@ -2316,6 +2339,43 @@ targets:
   - mac
   - linux
   - posix
+- name: memory_profile_client
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/memory_usage/client.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: memory_profile_server
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/memory_usage/server.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: memory_profile_test
+  cpu_cost: 1.5
+  build: test
+  language: c
+  src:
+  - test/core/memory_usage/memory_usage_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+  platforms:
+  - mac
+  - linux
+  - posix
 - name: message_compress_test
   build: test
   language: c
@@ -3185,6 +3245,22 @@ targets:
   - grpc++
   - grpc++_test_util
   - grpc_test_util
+- name: http2_client
+  build: test
+  run: false
+  language: c++
+  src: []
+  deps:
+  - http2_client_main
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - grpc++_test_config
+  platforms:
+  - mac
+  - linux
+  - posix
 - name: hybrid_end2end_test
   gtest: true
   build: test
@@ -3812,7 +3888,6 @@ node_modules:
   - src/node/ext/channel.h
   - src/node/ext/channel_credentials.h
   - src/node/ext/completion_queue.h
-  - src/node/ext/completion_queue_async_worker.h
   - src/node/ext/server.h
   - src/node/ext/server_credentials.h
   - src/node/ext/timeval.h
@@ -3831,8 +3906,8 @@ node_modules:
   - src/node/ext/call_credentials.cc
   - src/node/ext/channel.cc
   - src/node/ext/channel_credentials.cc
-  - src/node/ext/completion_queue.cc
-  - src/node/ext/completion_queue_async_worker.cc
+  - src/node/ext/completion_queue_threadpool.cc
+  - src/node/ext/completion_queue_uv.cc
   - src/node/ext/node_grpc.cc
   - src/node/ext/server.cc
   - src/node/ext/server_credentials.cc

config.m4

@@ -5,9 +5,9 @@ if test "$PHP_GRPC" != "no"; then
   dnl Write more examples of tests here...
 
   dnl # --with-grpc -> add include path
-  PHP_ADD_INCLUDE(../../grpc/include)
-  PHP_ADD_INCLUDE(../../grpc/src/php/ext/grpc)
-  PHP_ADD_INCLUDE(../../grpc/third_party/boringssl/include)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/include)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/src/php/ext/grpc)
+  PHP_ADD_INCLUDE(PHP_EXT_SRCDIR()/third_party/boringssl/include)
 
   LIBS="-lpthread $LIBS"
 
@@ -88,6 +88,8 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/channel/connected_channel.c \
     src/core/lib/channel/deadline_filter.c \
     src/core/lib/channel/handshaker.c \
+    src/core/lib/channel/handshaker_factory.c \
+    src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/message_size_filter.c \

doc/cpp/perf_notes.md

@@ -0,0 +1,29 @@
+# C++ Performance Notes
+
+## Streaming write buffering
+
+Generally, each write operation (Write(), WritesDone()) implies a syscall.
+gRPC will try to batch together separate write operations from different
+threads, but currently cannot automatically infer batching in a single stream.
+
+If message k+1 in a stream does not rely on responses from message k, it's
+possible to enable write batching by passing a WriteOptions argument to Write
+with the buffer_hint set:
+
+~~~{.cpp}
+stream_writer->Write(message, WriteOptions().set_buffer_hint());
+~~~
+
+The write will be buffered until one of the following is true:
+- the per-stream buffer is filled (controllable with the channel argument
+  GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE) - this prevents infinite buffering leading
+  to OOM
+- a subsequent Write without buffer_hint set is posted
+- the call is finished for writing (WritesDone() called on the client,
+  or Finish() called on an async server stream, or the service handler returns
+  for a sync server stream)
+
+## Completion Queues and Threading in the Async API
+
+Right now, the best performance trade-off is having numcpu's threads and one
+completion queue per thread.

doc/interop-test-descriptions.md

@@ -716,7 +716,9 @@ Procedure:
 
     ```
     {
-      response_size: 314159
+      response_parameters:{
+        size: 314159
+      }
       payload:{
         body: 271828 bytes of zeros
       }

doc/negative-http2-interop-test-descriptions.md

@@ -0,0 +1,195 @@
+Negative HTTP/2 Interop Test Case Descriptions
+=======================================
+
+Client and server use
+[test.proto](../src/proto/grpc/testing/test.proto).
+
+Server
+------
+The code for the custom http2 server can be found
+[here](https://github.com/grpc/grpc/tree/master/test/http2_test).
+It is responsible for handling requests and sending responses, and also for 
+fulfilling the behavior of each particular test case.
+
+Server should accept these arguments:
+* --port=PORT
+  * The port the server will run on. For example, "8080"
+* --test_case=TESTCASE
+  * The name of the test case to execute. For example, "goaway"
+
+Client
+------
+
+Clients implement test cases that test certain functionality. Each client is
+provided the test case it is expected to run as a command-line parameter. Names
+should be lowercase and without spaces.
+
+Clients should accept these arguments:
+* --server_host=HOSTNAME
+    * The server host to connect to. For example, "localhost" or "127.0.0.1"
+* --server_port=PORT
+    * The server port to connect to. For example, "8080"
+* --test_case=TESTCASE
+    * The name of the test case to execute. For example, "goaway"
+
+Note
+-----
+
+Note that the server and client must be invoked with the same test case or else
+the test will be meaningless. For convenience, we provide a shell script wrapper
+that invokes both server and client at the same time, with the same test_case.
+This is the preferred way to run these tests.
+
+## Test Cases
+
+### goaway
+
+This test verifies that the client correctly responds to a goaway sent by the
+server. The client should handle the goaway by switching to a new stream without
+the user application having to do a thing.
+
+Client Procedure:
+ 1. Client sends two UnaryCall requests (and sleeps for 1 second in-between).
+ TODO: resolve [9300](https://github.com/grpc/grpc/issues/9300) and remove the 1 second sleep
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Both calls are successful.
+* Response payload body is 314159 bytes in size.
+
+Server Procedure:
+  1. Server sends a GOAWAY after receiving the first UnaryCall.
+
+Server asserts:
+* Two different connections were used from the client.
+
+### rst_after_header
+
+This test verifies that the client fails correctly when the server sends a
+RST_STREAM immediately after sending headers to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending headers to the client.
+  
+*At the moment the error code and message returned are not standardized throughout all
+languages. Those checks will be added once all client languages behave the same way. [#9142](https://github.com/grpc/grpc/issues/9142) is in flight.*
+
+### rst_during_data
+
+This test verifies that the client fails "correctly" when the server sends a
+RST_STREAM halfway through sending data to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending half of 
+     the requested data to the client.
+
+### rst_after_data
+
+This test verifies that the client fails "correctly" when the server sends a
+RST_STREAM after sending all of the data to the client.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+
+Client asserts:
+* Call was not successful.
+
+Server Procedure:
+  1. Server sends a RST_STREAM with error code 0 after sending all of the
+  data to the client.
+
+*Certain client languages allow the data to be accessed even though a RST_STREAM
+was encountered. Once all client languages behave this way, checks will be added on
+the incoming data.*
+
+### ping
+
+This test verifies that the client correctly acknowledges all pings it gets from the
+server.
+
+Procedure:
+ 1. Client sends UnaryCall with:
+ 
+    ```
+    {
+      response_size: 314159
+      payload:{
+        body: 271828 bytes of zeros
+      }
+    }
+    ```
+  
+Client asserts:
+* call was successful.
+* response payload body is 314159 bytes in size.
+
+Server Procedure:
+  1. Server tracks the number of outstanding pings (i.e. +1 when it sends a ping, and -1 
+  when it receives an ack from the client).
+  2. Server sends pings before and after sending headers, also before and after sending data.
+  
+Server Asserts:
+* Number of outstanding pings is 0 when the connection is lost.
+
+### max_streams
+
+This test verifies that the client observes the MAX_CONCURRENT_STREAMS limit set by the server.
+
+Client Procedure:
+  1. Client sends initial UnaryCall to allow the server to update its MAX_CONCURRENT_STREAMS settings.
+  2. Client concurrently sends 10 UnaryCalls.
+  
+Client Asserts:
+* All UnaryCalls were successful, and had the correct type and payload size.
+ 
+Server Procedure:
+  1. Sets MAX_CONCURRENT_STREAMS to one after the connection is made.
+
+*The assertion that the MAX_CONCURRENT_STREAMS limit is upheld occurs in the http2 library we used.*

examples/cpp/helloworld/greeter_client.cc

@@ -51,7 +51,7 @@ class GreeterClient {
   GreeterClient(std::shared_ptr<Channel> channel)
       : stub_(Greeter::NewStub(channel)) {}
 
-  // Assambles the client's payload, sends it and presents the response back
+  // Assembles the client's payload, sends it and presents the response back
   // from the server.
   std::string SayHello(const std::string& user) {
     // Data we are sending to the server.

examples/python/helloworld/greeter_client.py

@@ -34,11 +34,12 @@ from __future__ import print_function
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  stub = helloworld_pb2.GreeterStub(channel)
+  stub = helloworld_pb2_grpc.GreeterStub(channel)
   response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
   print("Greeter client received: " + response.message)
 

examples/python/helloworld/greeter_server.py

@@ -35,11 +35,12 @@ import time
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
 
 
-class Greeter(helloworld_pb2.GreeterServicer):
+class Greeter(helloworld_pb2_grpc.GreeterServicer):
 
   def SayHello(self, request, context):
     return helloworld_pb2.HelloReply(message='Hello, %s!' % request.name)
@@ -47,7 +48,7 @@ class Greeter(helloworld_pb2.GreeterServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  helloworld_pb2.add_GreeterServicer_to_server(Greeter(), server)
+  helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
   server.add_insecure_port('[::]:50051')
   server.start()
   try:

examples/python/helloworld/helloworld_pb2.py

@@ -107,98 +107,123 @@ _sym_db.RegisterMessage(HelloReply)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.helloworldB\017HelloWorldProtoP\001\242\002\003HLW'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class GreeterStub(object):
+    """The greeting service definition.
+    """
 
+    def __init__(self, channel):
+      """Constructor.
 
-class GreeterStub(object):
-  """The greeting service definition.
-  """
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.SayHello = channel.unary_unary(
+          '/helloworld.Greeter/SayHello',
+          request_serializer=HelloRequest.SerializeToString,
+          response_deserializer=HelloReply.FromString,
+          )
 
-  def __init__(self, channel):
-    """Constructor.
 
-    Args:
-      channel: A grpc.Channel.
+  class GreeterServicer(object):
+    """The greeting service definition.
     """
-    self.SayHello = channel.unary_unary(
-        '/helloworld.Greeter/SayHello',
-        request_serializer=HelloRequest.SerializeToString,
-        response_deserializer=HelloReply.FromString,
-        )
-
-
-class GreeterServicer(object):
-  """The greeting service definition.
-  """
 
-  def SayHello(self, request, context):
-    """Sends a greeting
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_GreeterServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'SayHello': grpc.unary_unary_rpc_method_handler(
+            servicer.SayHello,
+            request_deserializer=HelloRequest.FromString,
+            response_serializer=HelloReply.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'helloworld.Greeter', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaGreeterServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_GreeterServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'SayHello': grpc.unary_unary_rpc_method_handler(
-          servicer.SayHello,
-          request_deserializer=HelloRequest.FromString,
-          response_serializer=HelloReply.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'helloworld.Greeter', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaGreeterServicer(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, context):
-    """Sends a greeting
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
 
+  class BetaGreeterStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
 
-class BetaGreeterStub(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """Sends a greeting
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    raise NotImplementedError()
-  SayHello.future = None
-
-
-def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
-  }
-  response_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
-  }
-  method_implementations = {
-    ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
-  }
-  response_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
-  }
-  cardinalities = {
-    'SayHello': cardinality.Cardinality.UNARY_UNARY,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+    def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """Sends a greeting
+      """
+      raise NotImplementedError()
+    SayHello.future = None
+
+
+  def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
+    }
+    response_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
+    }
+    method_implementations = {
+      ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
+    }
+    response_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
+    }
+    cardinalities = {
+      'SayHello': cardinality.Cardinality.UNARY_UNARY,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)

examples/python/helloworld/helloworld_pb2_grpc.py

@@ -0,0 +1,47 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import helloworld_pb2 as helloworld__pb2
+
+
+class GreeterStub(object):
+  """The greeting service definition.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.SayHello = channel.unary_unary(
+        '/helloworld.Greeter/SayHello',
+        request_serializer=helloworld__pb2.HelloRequest.SerializeToString,
+        response_deserializer=helloworld__pb2.HelloReply.FromString,
+        )
+
+
+class GreeterServicer(object):
+  """The greeting service definition.
+  """
+
+  def SayHello(self, request, context):
+    """Sends a greeting
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_GreeterServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'SayHello': grpc.unary_unary_rpc_method_handler(
+          servicer.SayHello,
+          request_deserializer=helloworld__pb2.HelloRequest.FromString,
+          response_serializer=helloworld__pb2.HelloReply.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'helloworld.Greeter', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))

examples/python/multiplex/helloworld_pb2.py

@@ -107,98 +107,123 @@ _sym_db.RegisterMessage(HelloReply)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.helloworldB\017HelloWorldProtoP\001\242\002\003HLW'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class GreeterStub(object):
+    """The greeting service definition.
+    """
 
+    def __init__(self, channel):
+      """Constructor.
 
-class GreeterStub(object):
-  """The greeting service definition.
-  """
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.SayHello = channel.unary_unary(
+          '/helloworld.Greeter/SayHello',
+          request_serializer=HelloRequest.SerializeToString,
+          response_deserializer=HelloReply.FromString,
+          )
 
-  def __init__(self, channel):
-    """Constructor.
 
-    Args:
-      channel: A grpc.Channel.
+  class GreeterServicer(object):
+    """The greeting service definition.
     """
-    self.SayHello = channel.unary_unary(
-        '/helloworld.Greeter/SayHello',
-        request_serializer=HelloRequest.SerializeToString,
-        response_deserializer=HelloReply.FromString,
-        )
-
-
-class GreeterServicer(object):
-  """The greeting service definition.
-  """
 
-  def SayHello(self, request, context):
-    """Sends a greeting
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_GreeterServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'SayHello': grpc.unary_unary_rpc_method_handler(
+            servicer.SayHello,
+            request_deserializer=HelloRequest.FromString,
+            response_serializer=HelloReply.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'helloworld.Greeter', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaGreeterServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_GreeterServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'SayHello': grpc.unary_unary_rpc_method_handler(
-          servicer.SayHello,
-          request_deserializer=HelloRequest.FromString,
-          response_serializer=HelloReply.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'helloworld.Greeter', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaGreeterServicer(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, context):
-    """Sends a greeting
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def SayHello(self, request, context):
+      """Sends a greeting
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
 
+  class BetaGreeterStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
 
-class BetaGreeterStub(object):
-  """The greeting service definition.
-  """
-  def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """Sends a greeting
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """The greeting service definition.
     """
-    raise NotImplementedError()
-  SayHello.future = None
-
-
-def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
-  }
-  response_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
-  }
-  method_implementations = {
-    ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
-  }
-  response_deserializers = {
-    ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
-  }
-  cardinalities = {
-    'SayHello': cardinality.Cardinality.UNARY_UNARY,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+    def SayHello(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """Sends a greeting
+      """
+      raise NotImplementedError()
+    SayHello.future = None
+
+
+  def beta_create_Greeter_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.FromString,
+    }
+    response_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.SerializeToString,
+    }
+    method_implementations = {
+      ('helloworld.Greeter', 'SayHello'): face_utilities.unary_unary_inline(servicer.SayHello),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_Greeter_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloRequest.SerializeToString,
+    }
+    response_deserializers = {
+      ('helloworld.Greeter', 'SayHello'): HelloReply.FromString,
+    }
+    cardinalities = {
+      'SayHello': cardinality.Cardinality.UNARY_UNARY,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'helloworld.Greeter', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)

examples/python/multiplex/helloworld_pb2_grpc.py

@@ -0,0 +1,47 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import helloworld_pb2 as helloworld__pb2
+
+
+class GreeterStub(object):
+  """The greeting service definition.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.SayHello = channel.unary_unary(
+        '/helloworld.Greeter/SayHello',
+        request_serializer=helloworld__pb2.HelloRequest.SerializeToString,
+        response_deserializer=helloworld__pb2.HelloReply.FromString,
+        )
+
+
+class GreeterServicer(object):
+  """The greeting service definition.
+  """
+
+  def SayHello(self, request, context):
+    """Sends a greeting
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_GreeterServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'SayHello': grpc.unary_unary_rpc_method_handler(
+          servicer.SayHello,
+          request_deserializer=helloworld__pb2.HelloRequest.FromString,
+          response_serializer=helloworld__pb2.HelloReply.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'helloworld.Greeter', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))

examples/python/multiplex/multiplex_client.py

@@ -37,7 +37,9 @@ import time
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 
@@ -120,8 +122,8 @@ def guide_route_chat(route_guide_stub):
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  greeter_stub = helloworld_pb2.GreeterStub(channel)
-  route_guide_stub = route_guide_pb2.RouteGuideStub(channel)
+  greeter_stub = helloworld_pb2_grpc.GreeterStub(channel)
+  route_guide_stub = route_guide_pb2_grpc.RouteGuideStub(channel)
   greeter_response = greeter_stub.SayHello(
       helloworld_pb2.HelloRequest(name='you'))
   print("Greeter client received: " + greeter_response.message)

examples/python/multiplex/multiplex_server.py

@@ -36,7 +36,9 @@ import math
 import grpc
 
 import helloworld_pb2
+import helloworld_pb2_grpc
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
@@ -70,13 +72,13 @@ def _get_distance(start, end):
   return R * c;
 
 
-class _GreeterServicer(helloworld_pb2.GreeterServicer):
+class _GreeterServicer(helloworld_pb2_grpc.GreeterServicer):
 
   def SayHello(self, request, context):
     return helloworld_pb2.HelloReply(message='Hello, {}!'.format(request.name))
 
 
-class _RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
+class _RouteGuideServicer(route_guide_pb2_grpc.RouteGuideServicer):
   """Provides methods that implement functionality of route guide server."""
 
   def __init__(self):
@@ -133,8 +135,8 @@ class _RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  helloworld_pb2.add_GreeterServicer_to_server(_GreeterServicer(), server)
-  route_guide_pb2.add_RouteGuideServicer_to_server(
+  helloworld_pb2_grpc.add_GreeterServicer_to_server(_GreeterServicer(), server)
+  route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
       _RouteGuideServicer(), server)
   server.add_insecure_port('[::]:50051')
   server.start()

examples/python/multiplex/route_guide_pb2.py

@@ -277,240 +277,265 @@ _sym_db.RegisterMessage(RouteSummary)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.routeguideB\017RouteGuideProtoP\001\242\002\003RTG'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
-
-
-class RouteGuideStub(object):
-  """Interface exported by the server.
-  """
-
-  def __init__(self, channel):
-    """Constructor.
-
-    Args:
-      channel: A grpc.Channel.
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class RouteGuideStub(object):
+    """Interface exported by the server.
     """
-    self.GetFeature = channel.unary_unary(
-        '/routeguide.RouteGuide/GetFeature',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.ListFeatures = channel.unary_stream(
-        '/routeguide.RouteGuide/ListFeatures',
-        request_serializer=Rectangle.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.RecordRoute = channel.stream_unary(
-        '/routeguide.RouteGuide/RecordRoute',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=RouteSummary.FromString,
-        )
-    self.RouteChat = channel.stream_stream(
-        '/routeguide.RouteGuide/RouteChat',
-        request_serializer=RouteNote.SerializeToString,
-        response_deserializer=RouteNote.FromString,
-        )
-
-
-class RouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
 
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
+    def __init__(self, channel):
+      """Constructor.
+
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.GetFeature = channel.unary_unary(
+          '/routeguide.RouteGuide/GetFeature',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.ListFeatures = channel.unary_stream(
+          '/routeguide.RouteGuide/ListFeatures',
+          request_serializer=Rectangle.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.RecordRoute = channel.stream_unary(
+          '/routeguide.RouteGuide/RecordRoute',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=RouteSummary.FromString,
+          )
+      self.RouteChat = channel.stream_stream(
+          '/routeguide.RouteGuide/RouteChat',
+          request_serializer=RouteNote.SerializeToString,
+          response_deserializer=RouteNote.FromString,
+          )
+
+
+  class RouteGuideServicer(object):
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
 
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_RouteGuideServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'GetFeature': grpc.unary_unary_rpc_method_handler(
+            servicer.GetFeature,
+            request_deserializer=Point.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'ListFeatures': grpc.unary_stream_rpc_method_handler(
+            servicer.ListFeatures,
+            request_deserializer=Rectangle.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'RecordRoute': grpc.stream_unary_rpc_method_handler(
+            servicer.RecordRoute,
+            request_deserializer=Point.FromString,
+            response_serializer=RouteSummary.SerializeToString,
+        ),
+        'RouteChat': grpc.stream_stream_rpc_method_handler(
+            servicer.RouteChat,
+            request_deserializer=RouteNote.FromString,
+            response_serializer=RouteNote.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'routeguide.RouteGuide', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaRouteGuideServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_RouteGuideServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'GetFeature': grpc.unary_unary_rpc_method_handler(
-          servicer.GetFeature,
-          request_deserializer=Point.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'ListFeatures': grpc.unary_stream_rpc_method_handler(
-          servicer.ListFeatures,
-          request_deserializer=Rectangle.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'RecordRoute': grpc.stream_unary_rpc_method_handler(
-          servicer.RecordRoute,
-          request_deserializer=Point.FromString,
-          response_serializer=RouteSummary.SerializeToString,
-      ),
-      'RouteChat': grpc.stream_stream_rpc_method_handler(
-          servicer.RouteChat,
-          request_deserializer=RouteNote.FromString,
-          response_serializer=RouteNote.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'routeguide.RouteGuide', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaRouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-
-
-class BetaRouteGuideStub(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    raise NotImplementedError()
-  GetFeature.future = None
-  def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    raise NotImplementedError()
-  def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    raise NotImplementedError()
-  RecordRoute.future = None
-  def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
+
+  class BetaRouteGuideStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    raise NotImplementedError()
-
-
-def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  response_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  method_implementations = {
-    ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
-    ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
-    ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
-    ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  response_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  cardinalities = {
-    'GetFeature': cardinality.Cardinality.UNARY_UNARY,
-    'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
-    'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
-    'RouteChat': cardinality.Cardinality.STREAM_STREAM,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+    def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      raise NotImplementedError()
+    GetFeature.future = None
+    def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      raise NotImplementedError()
+    def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      raise NotImplementedError()
+    RecordRoute.future = None
+    def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      raise NotImplementedError()
+
+
+  def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    response_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    method_implementations = {
+      ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
+      ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
+      ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
+      ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    response_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    cardinalities = {
+      'GetFeature': cardinality.Cardinality.UNARY_UNARY,
+      'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
+      'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
+      'RouteChat': cardinality.Cardinality.STREAM_STREAM,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)

examples/python/multiplex/route_guide_pb2_grpc.py

@@ -0,0 +1,114 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import route_guide_pb2 as route__guide__pb2
+
+
+class RouteGuideStub(object):
+  """Interface exported by the server.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.GetFeature = channel.unary_unary(
+        '/routeguide.RouteGuide/GetFeature',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.ListFeatures = channel.unary_stream(
+        '/routeguide.RouteGuide/ListFeatures',
+        request_serializer=route__guide__pb2.Rectangle.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.RecordRoute = channel.stream_unary(
+        '/routeguide.RouteGuide/RecordRoute',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteSummary.FromString,
+        )
+    self.RouteChat = channel.stream_stream(
+        '/routeguide.RouteGuide/RouteChat',
+        request_serializer=route__guide__pb2.RouteNote.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteNote.FromString,
+        )
+
+
+class RouteGuideServicer(object):
+  """Interface exported by the server.
+  """
+
+  def GetFeature(self, request, context):
+    """A simple RPC.
+
+    Obtains the feature at a given position.
+
+    A feature with an empty name is returned if there's no feature at the given
+    position.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def ListFeatures(self, request, context):
+    """A server-to-client streaming RPC.
+
+    Obtains the Features available within the given Rectangle.  Results are
+    streamed rather than returned at once (e.g. in a response message with a
+    repeated field), as the rectangle may cover a large area and contain a
+    huge number of features.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RecordRoute(self, request_iterator, context):
+    """A client-to-server streaming RPC.
+
+    Accepts a stream of Points on a route being traversed, returning a
+    RouteSummary when traversal is completed.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RouteChat(self, request_iterator, context):
+    """A Bidirectional streaming RPC.
+
+    Accepts a stream of RouteNotes sent while a route is being traversed,
+    while receiving other RouteNotes (e.g. from other users).
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_RouteGuideServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'GetFeature': grpc.unary_unary_rpc_method_handler(
+          servicer.GetFeature,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'ListFeatures': grpc.unary_stream_rpc_method_handler(
+          servicer.ListFeatures,
+          request_deserializer=route__guide__pb2.Rectangle.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'RecordRoute': grpc.stream_unary_rpc_method_handler(
+          servicer.RecordRoute,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.RouteSummary.SerializeToString,
+      ),
+      'RouteChat': grpc.stream_stream_rpc_method_handler(
+          servicer.RouteChat,
+          request_deserializer=route__guide__pb2.RouteNote.FromString,
+          response_serializer=route__guide__pb2.RouteNote.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'routeguide.RouteGuide', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))

examples/python/multiplex/run_codegen.py

@@ -29,7 +29,7 @@
 
 """Generates protocol messages and gRPC stubs."""
 
-from grpc.tools import protoc
+from grpc_tools import protoc
 
 protoc.main(
     (

examples/python/route_guide/route_guide_client.py

@@ -37,6 +37,7 @@ import time
 import grpc
 
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 
@@ -116,7 +117,7 @@ def guide_route_chat(stub):
 
 def run():
   channel = grpc.insecure_channel('localhost:50051')
-  stub = route_guide_pb2.RouteGuideStub(channel)
+  stub = route_guide_pb2_grpc.RouteGuideStub(channel)
   print("-------------- GetFeature --------------")
   guide_get_feature(stub)
   print("-------------- ListFeatures --------------")

examples/python/route_guide/route_guide_pb2.py

@@ -277,240 +277,265 @@ _sym_db.RegisterMessage(RouteSummary)
 
 DESCRIPTOR.has_options = True
 DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\033io.grpc.examples.routeguideB\017RouteGuideProtoP\001\242\002\003RTG'))
-import grpc
-from grpc.beta import implementations as beta_implementations
-from grpc.beta import interfaces as beta_interfaces
-from grpc.framework.common import cardinality
-from grpc.framework.interfaces.face import utilities as face_utilities
-
-
-class RouteGuideStub(object):
-  """Interface exported by the server.
-  """
-
-  def __init__(self, channel):
-    """Constructor.
-
-    Args:
-      channel: A grpc.Channel.
+try:
+  # THESE ELEMENTS WILL BE DEPRECATED.
+  # Please use the generated *_pb2_grpc.py files instead.
+  import grpc
+  from grpc.framework.common import cardinality
+  from grpc.framework.interfaces.face import utilities as face_utilities
+  from grpc.beta import implementations as beta_implementations
+  from grpc.beta import interfaces as beta_interfaces
+
+
+  class RouteGuideStub(object):
+    """Interface exported by the server.
     """
-    self.GetFeature = channel.unary_unary(
-        '/routeguide.RouteGuide/GetFeature',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.ListFeatures = channel.unary_stream(
-        '/routeguide.RouteGuide/ListFeatures',
-        request_serializer=Rectangle.SerializeToString,
-        response_deserializer=Feature.FromString,
-        )
-    self.RecordRoute = channel.stream_unary(
-        '/routeguide.RouteGuide/RecordRoute',
-        request_serializer=Point.SerializeToString,
-        response_deserializer=RouteSummary.FromString,
-        )
-    self.RouteChat = channel.stream_stream(
-        '/routeguide.RouteGuide/RouteChat',
-        request_serializer=RouteNote.SerializeToString,
-        response_deserializer=RouteNote.FromString,
-        )
-
-
-class RouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
 
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
+    def __init__(self, channel):
+      """Constructor.
+
+      Args:
+        channel: A grpc.Channel.
+      """
+      self.GetFeature = channel.unary_unary(
+          '/routeguide.RouteGuide/GetFeature',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.ListFeatures = channel.unary_stream(
+          '/routeguide.RouteGuide/ListFeatures',
+          request_serializer=Rectangle.SerializeToString,
+          response_deserializer=Feature.FromString,
+          )
+      self.RecordRoute = channel.stream_unary(
+          '/routeguide.RouteGuide/RecordRoute',
+          request_serializer=Point.SerializeToString,
+          response_deserializer=RouteSummary.FromString,
+          )
+      self.RouteChat = channel.stream_stream(
+          '/routeguide.RouteGuide/RouteChat',
+          request_serializer=RouteNote.SerializeToString,
+          response_deserializer=RouteNote.FromString,
+          )
+
+
+  class RouteGuideServicer(object):
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
 
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+      context.set_details('Method not implemented!')
+      raise NotImplementedError('Method not implemented!')
+
+
+  def add_RouteGuideServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+        'GetFeature': grpc.unary_unary_rpc_method_handler(
+            servicer.GetFeature,
+            request_deserializer=Point.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'ListFeatures': grpc.unary_stream_rpc_method_handler(
+            servicer.ListFeatures,
+            request_deserializer=Rectangle.FromString,
+            response_serializer=Feature.SerializeToString,
+        ),
+        'RecordRoute': grpc.stream_unary_rpc_method_handler(
+            servicer.RecordRoute,
+            request_deserializer=Point.FromString,
+            response_serializer=RouteSummary.SerializeToString,
+        ),
+        'RouteChat': grpc.stream_stream_rpc_method_handler(
+            servicer.RouteChat,
+            request_deserializer=RouteNote.FromString,
+            response_serializer=RouteNote.SerializeToString,
+        ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+        'routeguide.RouteGuide', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+  class BetaRouteGuideServicer(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
-    context.set_details('Method not implemented!')
-    raise NotImplementedError('Method not implemented!')
-
-
-def add_RouteGuideServicer_to_server(servicer, server):
-  rpc_method_handlers = {
-      'GetFeature': grpc.unary_unary_rpc_method_handler(
-          servicer.GetFeature,
-          request_deserializer=Point.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'ListFeatures': grpc.unary_stream_rpc_method_handler(
-          servicer.ListFeatures,
-          request_deserializer=Rectangle.FromString,
-          response_serializer=Feature.SerializeToString,
-      ),
-      'RecordRoute': grpc.stream_unary_rpc_method_handler(
-          servicer.RecordRoute,
-          request_deserializer=Point.FromString,
-          response_serializer=RouteSummary.SerializeToString,
-      ),
-      'RouteChat': grpc.stream_stream_rpc_method_handler(
-          servicer.RouteChat,
-          request_deserializer=RouteNote.FromString,
-          response_serializer=RouteNote.SerializeToString,
-      ),
-  }
-  generic_handler = grpc.method_handlers_generic_handler(
-      'routeguide.RouteGuide', rpc_method_handlers)
-  server.add_generic_rpc_handlers((generic_handler,))
-
-
-class BetaRouteGuideServicer(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, context):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def ListFeatures(self, request, context):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RecordRoute(self, request_iterator, context):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-  def RouteChat(self, request_iterator, context):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
-    """
-    context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
-
-
-class BetaRouteGuideStub(object):
-  """Interface exported by the server.
-  """
-  def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A simple RPC.
-
-    Obtains the feature at a given position.
-
-    A feature with an empty name is returned if there's no feature at the given
-    position.
-    """
-    raise NotImplementedError()
-  GetFeature.future = None
-  def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A server-to-client streaming RPC.
-
-    Obtains the Features available within the given Rectangle.  Results are
-    streamed rather than returned at once (e.g. in a response message with a
-    repeated field), as the rectangle may cover a large area and contain a
-    huge number of features.
-    """
-    raise NotImplementedError()
-  def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A client-to-server streaming RPC.
-
-    Accepts a stream of Points on a route being traversed, returning a
-    RouteSummary when traversal is completed.
-    """
-    raise NotImplementedError()
-  RecordRoute.future = None
-  def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
-    """A Bidirectional streaming RPC.
-
-    Accepts a stream of RouteNotes sent while a route is being traversed,
-    while receiving other RouteNotes (e.g. from other users).
+    def GetFeature(self, request, context):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def ListFeatures(self, request, context):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RecordRoute(self, request_iterator, context):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+    def RouteChat(self, request_iterator, context):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      context.code(beta_interfaces.StatusCode.UNIMPLEMENTED)
+
+
+  class BetaRouteGuideStub(object):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This class was generated
+    only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0."""
+    """Interface exported by the server.
     """
-    raise NotImplementedError()
-
-
-def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
-  request_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  response_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  method_implementations = {
-    ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
-    ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
-    ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
-    ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
-  }
-  server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
-  return beta_implementations.server(method_implementations, options=server_options)
-
-
-def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
-  request_serializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
-    ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
-  }
-  response_deserializers = {
-    ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
-    ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
-    ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
-    ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
-  }
-  cardinalities = {
-    'GetFeature': cardinality.Cardinality.UNARY_UNARY,
-    'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
-    'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
-    'RouteChat': cardinality.Cardinality.STREAM_STREAM,
-  }
-  stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
-  return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+    def GetFeature(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A simple RPC.
+
+      Obtains the feature at a given position.
+
+      A feature with an empty name is returned if there's no feature at the given
+      position.
+      """
+      raise NotImplementedError()
+    GetFeature.future = None
+    def ListFeatures(self, request, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A server-to-client streaming RPC.
+
+      Obtains the Features available within the given Rectangle.  Results are
+      streamed rather than returned at once (e.g. in a response message with a
+      repeated field), as the rectangle may cover a large area and contain a
+      huge number of features.
+      """
+      raise NotImplementedError()
+    def RecordRoute(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A client-to-server streaming RPC.
+
+      Accepts a stream of Points on a route being traversed, returning a
+      RouteSummary when traversal is completed.
+      """
+      raise NotImplementedError()
+    RecordRoute.future = None
+    def RouteChat(self, request_iterator, timeout, metadata=None, with_call=False, protocol_options=None):
+      """A Bidirectional streaming RPC.
+
+      Accepts a stream of RouteNotes sent while a route is being traversed,
+      while receiving other RouteNotes (e.g. from other users).
+      """
+      raise NotImplementedError()
+
+
+  def beta_create_RouteGuide_server(servicer, pool=None, pool_size=None, default_timeout=None, maximum_timeout=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    response_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    method_implementations = {
+      ('routeguide.RouteGuide', 'GetFeature'): face_utilities.unary_unary_inline(servicer.GetFeature),
+      ('routeguide.RouteGuide', 'ListFeatures'): face_utilities.unary_stream_inline(servicer.ListFeatures),
+      ('routeguide.RouteGuide', 'RecordRoute'): face_utilities.stream_unary_inline(servicer.RecordRoute),
+      ('routeguide.RouteGuide', 'RouteChat'): face_utilities.stream_stream_inline(servicer.RouteChat),
+    }
+    server_options = beta_implementations.server_options(request_deserializers=request_deserializers, response_serializers=response_serializers, thread_pool=pool, thread_pool_size=pool_size, default_timeout=default_timeout, maximum_timeout=maximum_timeout)
+    return beta_implementations.server(method_implementations, options=server_options)
+
+
+  def beta_create_RouteGuide_stub(channel, host=None, metadata_transformer=None, pool=None, pool_size=None):
+    """The Beta API is deprecated for 0.15.0 and later.
+
+    It is recommended to use the GA API (classes and functions in this
+    file not marked beta) for all further purposes. This function was
+    generated only to ease transition from grpcio<0.15.0 to grpcio>=0.15.0"""
+    request_serializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Rectangle.SerializeToString,
+      ('routeguide.RouteGuide', 'RecordRoute'): Point.SerializeToString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.SerializeToString,
+    }
+    response_deserializers = {
+      ('routeguide.RouteGuide', 'GetFeature'): Feature.FromString,
+      ('routeguide.RouteGuide', 'ListFeatures'): Feature.FromString,
+      ('routeguide.RouteGuide', 'RecordRoute'): RouteSummary.FromString,
+      ('routeguide.RouteGuide', 'RouteChat'): RouteNote.FromString,
+    }
+    cardinalities = {
+      'GetFeature': cardinality.Cardinality.UNARY_UNARY,
+      'ListFeatures': cardinality.Cardinality.UNARY_STREAM,
+      'RecordRoute': cardinality.Cardinality.STREAM_UNARY,
+      'RouteChat': cardinality.Cardinality.STREAM_STREAM,
+    }
+    stub_options = beta_implementations.stub_options(host=host, metadata_transformer=metadata_transformer, request_serializers=request_serializers, response_deserializers=response_deserializers, thread_pool=pool, thread_pool_size=pool_size)
+    return beta_implementations.dynamic_stub(channel, 'routeguide.RouteGuide', cardinalities, options=stub_options)
+except ImportError:
+  pass
 # @@protoc_insertion_point(module_scope)

examples/python/route_guide/route_guide_pb2_grpc.py

@@ -0,0 +1,114 @@
+import grpc
+from grpc.framework.common import cardinality
+from grpc.framework.interfaces.face import utilities as face_utilities
+
+import route_guide_pb2 as route__guide__pb2
+
+
+class RouteGuideStub(object):
+  """Interface exported by the server.
+  """
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.GetFeature = channel.unary_unary(
+        '/routeguide.RouteGuide/GetFeature',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.ListFeatures = channel.unary_stream(
+        '/routeguide.RouteGuide/ListFeatures',
+        request_serializer=route__guide__pb2.Rectangle.SerializeToString,
+        response_deserializer=route__guide__pb2.Feature.FromString,
+        )
+    self.RecordRoute = channel.stream_unary(
+        '/routeguide.RouteGuide/RecordRoute',
+        request_serializer=route__guide__pb2.Point.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteSummary.FromString,
+        )
+    self.RouteChat = channel.stream_stream(
+        '/routeguide.RouteGuide/RouteChat',
+        request_serializer=route__guide__pb2.RouteNote.SerializeToString,
+        response_deserializer=route__guide__pb2.RouteNote.FromString,
+        )
+
+
+class RouteGuideServicer(object):
+  """Interface exported by the server.
+  """
+
+  def GetFeature(self, request, context):
+    """A simple RPC.
+
+    Obtains the feature at a given position.
+
+    A feature with an empty name is returned if there's no feature at the given
+    position.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def ListFeatures(self, request, context):
+    """A server-to-client streaming RPC.
+
+    Obtains the Features available within the given Rectangle.  Results are
+    streamed rather than returned at once (e.g. in a response message with a
+    repeated field), as the rectangle may cover a large area and contain a
+    huge number of features.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RecordRoute(self, request_iterator, context):
+    """A client-to-server streaming RPC.
+
+    Accepts a stream of Points on a route being traversed, returning a
+    RouteSummary when traversal is completed.
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def RouteChat(self, request_iterator, context):
+    """A Bidirectional streaming RPC.
+
+    Accepts a stream of RouteNotes sent while a route is being traversed,
+    while receiving other RouteNotes (e.g. from other users).
+    """
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_RouteGuideServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'GetFeature': grpc.unary_unary_rpc_method_handler(
+          servicer.GetFeature,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'ListFeatures': grpc.unary_stream_rpc_method_handler(
+          servicer.ListFeatures,
+          request_deserializer=route__guide__pb2.Rectangle.FromString,
+          response_serializer=route__guide__pb2.Feature.SerializeToString,
+      ),
+      'RecordRoute': grpc.stream_unary_rpc_method_handler(
+          servicer.RecordRoute,
+          request_deserializer=route__guide__pb2.Point.FromString,
+          response_serializer=route__guide__pb2.RouteSummary.SerializeToString,
+      ),
+      'RouteChat': grpc.stream_stream_rpc_method_handler(
+          servicer.RouteChat,
+          request_deserializer=route__guide__pb2.RouteNote.FromString,
+          response_serializer=route__guide__pb2.RouteNote.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'routeguide.RouteGuide', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))

examples/python/route_guide/route_guide_server.py

@@ -36,6 +36,7 @@ import math
 import grpc
 
 import route_guide_pb2
+import route_guide_pb2_grpc
 import route_guide_resources
 
 _ONE_DAY_IN_SECONDS = 60 * 60 * 24
@@ -68,7 +69,7 @@ def get_distance(start, end):
   R = 6371000; # metres
   return R * c;
 
-class RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
+class RouteGuideServicer(route_guide_pb2_grpc.RouteGuideServicer):
   """Provides methods that implement functionality of route guide server."""
 
   def __init__(self):
@@ -125,7 +126,7 @@ class RouteGuideServicer(route_guide_pb2.RouteGuideServicer):
 
 def serve():
   server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
-  route_guide_pb2.add_RouteGuideServicer_to_server(
+  route_guide_pb2_grpc.add_RouteGuideServicer_to_server(
       RouteGuideServicer(), server)
   server.add_insecure_port('[::]:50051')
   server.start()

examples/python/route_guide/run_codegen.py

@@ -29,7 +29,7 @@
 
 """Runs protoc with the gRPC plugin to generate messages and gRPC stubs."""
 
-from grpc.tools import protoc
+from grpc_tools import protoc
 
 protoc.main(
     (

gRPC-Core.podspec

@@ -35,7 +35,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'http://www.grpc.io'
@@ -44,7 +44,9 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    # TODO(mxyan): Change back to "v#{version}" for next release
+    #:tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
     # TODO(jcanizales): Depend explicitly on the nanopb pod, and disable submodules.
     :submodules => true,
   }
@@ -165,6 +167,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/byte_buffer_reader.h',
                       'include/grpc/impl/codegen/compression_types.h',
                       'include/grpc/impl/codegen/connectivity_state.h',
+                      'include/grpc/impl/codegen/exec_ctx_fwd.h',
                       'include/grpc/impl/codegen/grpc_types.h',
                       'include/grpc/impl/codegen/propagation_bits.h',
                       'include/grpc/impl/codegen/status.h',
@@ -253,6 +256,8 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/context.h',
                       'src/core/lib/channel/deadline_filter.h',
                       'src/core/lib/channel/handshaker.h',
+                      'src/core/lib/channel/handshaker_factory.h',
+                      'src/core/lib/channel/handshaker_registry.h',
                       'src/core/lib/channel/http_client_filter.h',
                       'src/core/lib/channel/http_server_filter.h',
                       'src/core/lib/channel/message_size_filter.h',
@@ -319,6 +324,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/json/json_reader.h',
                       'src/core/lib/json/json_writer.h',
                       'src/core/lib/slice/percent_encoding.h',
+                      'src/core/lib/slice/slice_internal.h',
                       'src/core/lib/slice/slice_string_helpers.h',
                       'src/core/lib/surface/api_trace.h',
                       'src/core/lib/surface/call.h',
@@ -432,6 +438,8 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/connected_channel.c',
                       'src/core/lib/channel/deadline_filter.c',
                       'src/core/lib/channel/handshaker.c',
+                      'src/core/lib/channel/handshaker_factory.c',
+                      'src/core/lib/channel/handshaker_registry.c',
                       'src/core/lib/channel/http_client_filter.c',
                       'src/core/lib/channel/http_server_filter.c',
                       'src/core/lib/channel/message_size_filter.c',
@@ -660,6 +668,8 @@ Pod::Spec.new do |s|
                               'src/core/lib/channel/context.h',
                               'src/core/lib/channel/deadline_filter.h',
                               'src/core/lib/channel/handshaker.h',
+                              'src/core/lib/channel/handshaker_factory.h',
+                              'src/core/lib/channel/handshaker_registry.h',
                               'src/core/lib/channel/http_client_filter.h',
                               'src/core/lib/channel/http_server_filter.h',
                               'src/core/lib/channel/message_size_filter.h',
@@ -726,6 +736,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/json/json_reader.h',
                               'src/core/lib/json/json_writer.h',
                               'src/core/lib/slice/percent_encoding.h',
+                              'src/core/lib/slice/slice_internal.h',
                               'src/core/lib/slice/slice_string_helpers.h',
                               'src/core/lib/surface/api_trace.h',
                               'src/core/lib/surface/call.h',

gRPC-ProtoRPC.podspec

@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'

gRPC-RxLibrary.podspec

@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'Reactive Extensions library for iOS/OSX.'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'

gRPC.podspec

@@ -30,7 +30,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.0.1'
+  version = '1.0.2'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'http://www.grpc.io'
@@ -39,7 +39,7 @@ Pod::Spec.new do |s|
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
-    :tag => "v#{version}",
+    :tag => "objective-c-v#{version}",
   }
 
   s.ios.deployment_target = '7.1'

grpc.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w( src/ruby/bin src/ruby/lib src/ruby/pb )
   s.platform      = Gem::Platform::RUBY
 
-  s.add_dependency 'google-protobuf', '~> 3.0.2'
+  s.add_dependency 'google-protobuf', '~> 3.1.0'
   s.add_dependency 'googleauth',      '~> 0.5.1'
 
   s.add_development_dependency 'bundler',            '~> 1.9'
@@ -148,6 +148,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/byte_buffer_reader.h )
   s.files += %w( include/grpc/impl/codegen/compression_types.h )
   s.files += %w( include/grpc/impl/codegen/connectivity_state.h )
+  s.files += %w( include/grpc/impl/codegen/exec_ctx_fwd.h )
   s.files += %w( include/grpc/impl/codegen/grpc_types.h )
   s.files += %w( include/grpc/impl/codegen/propagation_bits.h )
   s.files += %w( include/grpc/impl/codegen/status.h )
@@ -172,6 +173,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/context.h )
   s.files += %w( src/core/lib/channel/deadline_filter.h )
   s.files += %w( src/core/lib/channel/handshaker.h )
+  s.files += %w( src/core/lib/channel/handshaker_factory.h )
+  s.files += %w( src/core/lib/channel/handshaker_registry.h )
   s.files += %w( src/core/lib/channel/http_client_filter.h )
   s.files += %w( src/core/lib/channel/http_server_filter.h )
   s.files += %w( src/core/lib/channel/message_size_filter.h )
@@ -238,6 +241,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/json/json_reader.h )
   s.files += %w( src/core/lib/json/json_writer.h )
   s.files += %w( src/core/lib/slice/percent_encoding.h )
+  s.files += %w( src/core/lib/slice/slice_internal.h )
   s.files += %w( src/core/lib/slice/slice_string_helpers.h )
   s.files += %w( src/core/lib/surface/api_trace.h )
   s.files += %w( src/core/lib/surface/call.h )
@@ -351,6 +355,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/connected_channel.c )
   s.files += %w( src/core/lib/channel/deadline_filter.c )
   s.files += %w( src/core/lib/channel/handshaker.c )
+  s.files += %w( src/core/lib/channel/handshaker_factory.c )
+  s.files += %w( src/core/lib/channel/handshaker_registry.c )
   s.files += %w( src/core/lib/channel/http_client_filter.c )
   s.files += %w( src/core/lib/channel/http_server_filter.c )
   s.files += %w( src/core/lib/channel/message_size_filter.c )

include/grpc++/grpc++.h

@@ -44,6 +44,10 @@
 /// peer, compression settings, authentication, etc.
 /// - grpc::Server, representing a gRPC server, created by grpc::ServerBuilder.
 ///
+/// Streaming calls are handled with the streaming classes in
+/// \ref sync_stream.h and
+/// \ref async_stream.h.
+///
 /// Refer to the
 /// [examples](https://github.com/grpc/grpc/blob/master/examples/cpp)
 /// for code putting these pieces into play.

include/grpc++/impl/codegen/completion_queue.h

@@ -94,8 +94,10 @@ class ServerContext;
 
 extern CoreCodegenInterface* g_core_codegen_interface;
 
-/// A thin wrapper around \a grpc_completion_queue (see / \a
-/// src/core/surface/completion_queue.h).
+/// A thin wrapper around \ref grpc_completion_queue (see \ref
+/// src/core/lib/surface/completion_queue.h).
+/// See \ref doc/cpp/perf_notes.md for notes on best practices for high
+/// performance servers.
 class CompletionQueue : private GrpcLibraryCodegen {
  public:
   /// Default constructor. Implicitly creates a \a grpc_completion_queue

include/grpc++/resource_quota.h

@@ -37,6 +37,7 @@
 struct grpc_resource_quota;
 
 #include <grpc++/impl/codegen/config.h>
+#include <grpc++/impl/codegen/grpc_library.h>
 
 namespace grpc {
 
@@ -44,7 +45,7 @@ namespace grpc {
 /// A ResourceQuota can be attached to a server (via ServerBuilder), or a client
 /// channel (via ChannelArguments). gRPC will attempt to keep memory used by
 /// all attached entities below the ResourceQuota bound.
-class ResourceQuota final {
+class ResourceQuota final : private GrpcLibraryCodegen {
  public:
   explicit ResourceQuota(const grpc::string& name);
   ResourceQuota();

include/grpc++/server_builder.h

@@ -187,7 +187,7 @@ class ServerBuilder {
 
   struct SyncServerSettings {
     SyncServerSettings()
-        : num_cqs(GPR_MAX(gpr_cpu_num_cores(), 4)),
+        : num_cqs(1),
           min_pollers(1),
           max_pollers(INT_MAX),
           cq_timeout_msec(1000) {}

include/grpc++/support/channel_arguments.h

@@ -127,7 +127,7 @@ class ChannelArguments {
   /// Default pointer argument operations.
   struct PointerVtableMembers {
     static void* Copy(void* in) { return in; }
-    static void Destroy(void* in) {}
+    static void Destroy(grpc_exec_ctx* exec_ctx, void* in) {}
     static int Compare(void* a, void* b) {
       if (a < b) return -1;
       if (a > b) return 1;

include/grpc/grpc.h

@@ -202,9 +202,15 @@ GRPCAPI grpc_call *grpc_channel_create_registered_call(
     completion of type 'tag' to the completion queue bound to the call.
     The order of ops specified in the batch has no significance.
     Only one operation of each type can be active at once in any given
-    batch. You must call grpc_completion_queue_next or
-    grpc_completion_queue_pluck on the completion queue associated with 'call'
-    for work to be performed.
+    batch.
+    If a call to grpc_call_start_batch returns GRPC_CALL_OK you must call
+    grpc_completion_queue_next or grpc_completion_queue_pluck on the completion
+    queue associated with 'call' for work to be performed. If a call to
+    grpc_call_start_batch returns any value other than GRPC_CALL_OK it is
+    guaranteed that no state associated with 'call' is changed and it is not
+    appropriate to call grpc_completion_queue_next or
+    grpc_completion_queue_pluck consequent to the failed grpc_call_start_batch
+    call.
     THREAD SAFETY: access to grpc_call_start_batch in multi-threaded environment
     needs to be synchronized. As an optimization, you may synchronize batches
     containing just send operations independently from batches containing just

include/grpc/impl/codegen/exec_ctx_fwd.h

@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2016, 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 GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H
+#define GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H
+
+/* forward declaration for exec_ctx.h */
+struct grpc_exec_ctx;
+typedef struct grpc_exec_ctx grpc_exec_ctx;
+
+#endif /* GRPC_IMPL_CODEGEN_EXEC_CTX_FWD_H */

include/grpc/impl/codegen/grpc_types.h

@@ -34,10 +34,10 @@
 #ifndef GRPC_IMPL_CODEGEN_GRPC_TYPES_H
 #define GRPC_IMPL_CODEGEN_GRPC_TYPES_H
 
+#include <grpc/impl/codegen/compression_types.h>
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/impl/codegen/slice.h>
-
-#include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/status.h>
 
 #include <stddef.h>
@@ -96,7 +96,7 @@ typedef enum {
 
 typedef struct grpc_arg_pointer_vtable {
   void *(*copy)(void *p);
-  void (*destroy)(void *p);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, void *p);
   int (*cmp)(void *p, void *q);
 } grpc_arg_pointer_vtable;
 
@@ -206,18 +206,12 @@ typedef struct {
 /** If non-zero, allow the use of SO_REUSEPORT if it's available (default 1) */
 #define GRPC_ARG_ALLOW_REUSEPORT "grpc.so_reuseport"
 /** If non-zero, a pointer to a buffer pool (use grpc_resource_quota_arg_vtable
-   to fetch an appropriate pointer arg vtable */
+   to fetch an appropriate pointer arg vtable) */
 #define GRPC_ARG_RESOURCE_QUOTA "grpc.resource_quota"
-/** Service config data, to be passed to subchannels.
-    Not intended for external use. */
+/** Service config data in JSON form. Not intended for use outside of tests. */
 #define GRPC_ARG_SERVICE_CONFIG "grpc.service_config"
 /** LB policy name. */
 #define GRPC_ARG_LB_POLICY_NAME "grpc.lb_policy_name"
-/** Server name. Not intended for external use. */
-#define GRPC_ARG_SERVER_NAME "grpc.server_name"
-/** Resolved addresses in a form used by the LB policy.
-    Not intended for external use. */
-#define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
 /** The grpc_socket_mutator instance that set the socket options. A pointer. */
 #define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
 /** \} */

include/grpc/impl/codegen/port_platform.h

@@ -361,7 +361,7 @@ typedef unsigned __int64 uint64_t;
 #define GPR_MAX_ALIGNMENT 16
 
 #ifndef GRPC_MUST_USE_RESULT
-#ifdef __GNUC__
+#if defined(__GNUC__) && !defined(__MINGW32__)
 #define GRPC_MUST_USE_RESULT __attribute__((warn_unused_result))
 #else
 #define GRPC_MUST_USE_RESULT

include/grpc/impl/codegen/slice.h

@@ -37,6 +37,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <grpc/impl/codegen/exec_ctx_fwd.h>
+
 /* Slice API
 
    A slice represents a contiguous reference counted array of bytes.
@@ -57,7 +59,7 @@
    grpc_slice_new, or grpc_slice_new_with_len instead. */
 typedef struct grpc_slice_refcount {
   void (*ref)(void *);
-  void (*unref)(void *);
+  void (*unref)(grpc_exec_ctx *exec_ctx, void *);
 } grpc_slice_refcount;
 
 #define GRPC_SLICE_INLINED_SIZE (sizeof(size_t) + sizeof(uint8_t *) - 1)

include/grpc/support/log_windows.h

@@ -34,6 +34,8 @@
 #ifndef GRPC_SUPPORT_LOG_WINDOWS_H
 #define GRPC_SUPPORT_LOG_WINDOWS_H
 
+#include <grpc/impl/codegen/port_platform.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif

package.json

@@ -21,6 +21,7 @@
   "scripts": {
     "lint": "node ./node_modules/jshint/bin/jshint src/node/src src/node/test src/node/interop src/node/index.js --exclude-path=src/node/.jshintignore",
     "test": "./node_modules/.bin/mocha src/node/test && npm run-script lint",
+    "electron-build": "./node_modules/.bin/node-pre-gyp configure build --runtime=electron --disturl=https://atom.io/download/atom-shell",
     "gen_docs": "./node_modules/.bin/jsdoc -c src/node/jsdoc_conf.json",
     "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha src/node/test",
     "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build"
@@ -38,6 +39,7 @@
   "devDependencies": {
     "async": "^2.0.1",
     "body-parser": "^1.15.2",
+    "electron-mocha": "^3.1.1",
     "express": "^4.14.0",
     "google-auth-library": "^0.9.2",
     "google-protobuf": "^3.0.0",
@@ -50,7 +52,7 @@
     "poisson-process": "^0.2.1"
   },
   "engines": {
-    "node": ">=0.12.0"
+    "node": ">=1.1.0"
   },
   "binary": {
     "module_name": "grpc_node",

package.xml

@@ -156,6 +156,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/connectivity_state.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/impl/codegen/exec_ctx_fwd.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/grpc_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/propagation_bits.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/status.h" role="src" />
@@ -180,6 +181,8 @@
     <file baseinstalldir="/" name="src/core/lib/channel/context.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/deadline_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/handshaker.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_factory.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_registry.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.h" role="src" />
@@ -246,6 +249,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_reader.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_writer.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/percent_encoding.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/slice/slice_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_string_helpers.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/api_trace.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/call.h" role="src" />
@@ -359,6 +363,8 @@
     <file baseinstalldir="/" name="src/core/lib/channel/connected_channel.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/deadline_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/handshaker.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_factory.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/channel/handshaker_registry.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.c" role="src" />

setup.py

@@ -218,15 +218,18 @@ SETUP_REQUIRES = INSTALL_REQUIRES + (
     'six>=1.10',
   ) if ENABLE_DOCUMENTATION_BUILD else ()
 
-if BUILD_WITH_CYTHON:
-  sys.stderr.write(
-    "You requested a Cython build via GRPC_PYTHON_BUILD_WITH_CYTHON, "
-    "but do not have Cython installed. We won't stop you from using "
-    "other commands, but the extension files will fail to build.\n")
-elif need_cython:
-  sys.stderr.write(
-      'We could not find Cython. Setup may take 10-20 minutes.\n')
-  SETUP_REQUIRES += ('cython>=0.23',)
+try:
+  import Cython
+except ImportError:
+  if BUILD_WITH_CYTHON:
+    sys.stderr.write(
+      "You requested a Cython build via GRPC_PYTHON_BUILD_WITH_CYTHON, "
+      "but do not have Cython installed. We won't stop you from using "
+      "other commands, but the extension files will fail to build.\n")
+  elif need_cython:
+    sys.stderr.write(
+        'We could not find Cython. Setup may take 10-20 minutes.\n')
+    SETUP_REQUIRES += ('cython>=0.23',)
 
 COMMAND_CLASS = {
     'doc': commands.SphinxDocumentation,

src/compiler/csharp_generator.cc

@@ -68,13 +68,13 @@ namespace {
 // Currently, we cannot easily reuse the functionality as
 // google/protobuf/compiler/csharp/csharp_doc_comment.h is not a public header.
 // TODO(jtattermusch): reuse the functionality from google/protobuf.
-void GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
+bool GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
                                 grpc::protobuf::SourceLocation location) {
   grpc::string comments = location.leading_comments.empty()
                               ? location.trailing_comments
                               : location.leading_comments;
   if (comments.empty()) {
-    return;
+    return false;
   }
   // XML escaping... no need for apostrophes etc as the whole text is going to
   // be a child
@@ -107,18 +107,84 @@ void GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer *printer,
         printer->Print("///\n");
       }
       last_was_empty = false;
-      printer->Print("/// $line$\n", "line", *it);
+      printer->Print("///$line$\n", "line", *it);
     }
   }
   printer->Print("/// </summary>\n");
+  return true;
 }
 
 template <typename DescriptorType>
-void GenerateDocCommentBody(grpc::protobuf::io::Printer *printer,
+bool GenerateDocCommentBody(grpc::protobuf::io::Printer *printer,
                             const DescriptorType *descriptor) {
   grpc::protobuf::SourceLocation location;
-  if (descriptor->GetSourceLocation(&location)) {
-    GenerateDocCommentBodyImpl(printer, location);
+  if (!descriptor->GetSourceLocation(&location)) {
+    return false;
+  }
+  return GenerateDocCommentBodyImpl(printer, location);
+}
+
+void GenerateDocCommentServerMethod(grpc::protobuf::io::Printer *printer,
+                                    const MethodDescriptor *method) {
+  if (GenerateDocCommentBody(printer, method)) {
+    if (method->client_streaming()) {
+      printer->Print(
+          "/// <param name=\"requestStream\">Used for reading requests from "
+          "the client.</param>\n");
+    } else {
+      printer->Print(
+          "/// <param name=\"request\">The request received from the "
+          "client.</param>\n");
+    }
+    if (method->server_streaming()) {
+      printer->Print(
+          "/// <param name=\"responseStream\">Used for sending responses back "
+          "to the client.</param>\n");
+    }
+    printer->Print(
+        "/// <param name=\"context\">The context of the server-side call "
+        "handler being invoked.</param>\n");
+    if (method->server_streaming()) {
+      printer->Print(
+          "/// <returns>A task indicating completion of the "
+          "handler.</returns>\n");
+    } else {
+      printer->Print(
+          "/// <returns>The response to send back to the client (wrapped by a "
+          "task).</returns>\n");
+    }
+  }
+}
+
+void GenerateDocCommentClientMethod(grpc::protobuf::io::Printer *printer,
+                                    const MethodDescriptor *method,
+                                    bool is_sync, bool use_call_options) {
+  if (GenerateDocCommentBody(printer, method)) {
+    if (!method->client_streaming()) {
+      printer->Print(
+          "/// <param name=\"request\">The request to send to the "
+          "server.</param>\n");
+    }
+    if (!use_call_options) {
+      printer->Print(
+          "/// <param name=\"headers\">The initial metadata to send with the "
+          "call. This parameter is optional.</param>\n");
+      printer->Print(
+          "/// <param name=\"deadline\">An optional deadline for the call. The "
+          "call will be cancelled if deadline is hit.</param>\n");
+      printer->Print(
+          "/// <param name=\"cancellationToken\">An optional token for "
+          "canceling the call.</param>\n");
+    } else {
+      printer->Print(
+          "/// <param name=\"options\">The options for the call.</param>\n");
+    }
+    if (is_sync) {
+      printer->Print(
+          "/// <returns>The response received from the server.</returns>\n");
+    } else {
+      printer->Print("/// <returns>The call object.</returns>\n");
+    }
   }
 }
 
@@ -319,7 +385,7 @@ void GenerateServerClass(Printer *out, const ServiceDescriptor *service) {
   out->Indent();
   for (int i = 0; i < service->method_count(); i++) {
     const MethodDescriptor *method = service->method(i);
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentServerMethod(out, method);
     out->Print(
         "public virtual $returntype$ "
         "$methodname$($request$$response_stream_maybe$, "
@@ -393,7 +459,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
 
     if (method_type == METHODTYPE_NO_STREAMING) {
       // unary calls have an extra synchronous stub method
-      GenerateDocCommentBody(out, method);
+      GenerateDocCommentClientMethod(out, method, true, false);
       out->Print(
           "public virtual $response$ $methodname$($request$ request, Metadata "
           "headers = null, DateTime? deadline = null, CancellationToken "
@@ -411,7 +477,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       out->Print("}\n");
 
       // overload taking CallOptions as a param
-      GenerateDocCommentBody(out, method);
+      GenerateDocCommentClientMethod(out, method, true, true);
       out->Print(
           "public virtual $response$ $methodname$($request$ request, "
           "CallOptions options)\n",
@@ -432,7 +498,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     if (method_type == METHODTYPE_NO_STREAMING) {
       method_name += "Async";  // prevent name clash with synchronous method.
     }
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentClientMethod(out, method, false, false);
     out->Print(
         "public virtual $returntype$ $methodname$($request_maybe$Metadata "
         "headers = null, DateTime? deadline = null, CancellationToken "
@@ -452,7 +518,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     out->Print("}\n");
 
     // overload taking CallOptions as a param
-    GenerateDocCommentBody(out, method);
+    GenerateDocCommentClientMethod(out, method, false, true);
     out->Print(
         "public virtual $returntype$ $methodname$($request_maybe$CallOptions "
         "options)\n",
@@ -517,6 +583,9 @@ void GenerateBindServiceMethod(Printer *out, const ServiceDescriptor *service) {
   out->Print(
       "/// <summary>Creates service definition that can be registered with a "
       "server</summary>\n");
+  out->Print(
+      "/// <param name=\"serviceImpl\">An object implementing the server-side"
+      " handling logic.</param>\n");
   out->Print(
       "public static ServerServiceDefinition BindService($implclass$ "
       "serviceImpl)\n",

src/compiler/python_generator.cc

@@ -40,6 +40,7 @@
 #include <map>
 #include <memory>
 #include <ostream>
+#include <set>
 #include <sstream>
 #include <tuple>
 #include <vector>
@@ -64,7 +65,9 @@ using std::make_pair;
 using std::map;
 using std::pair;
 using std::replace;
+using std::tuple;
 using std::vector;
+using std::set;
 
 namespace grpc_python_generator {
 
@@ -73,6 +76,8 @@ namespace {
 typedef vector<const Descriptor*> DescriptorVector;
 typedef map<grpc::string, grpc::string> StringMap;
 typedef vector<grpc::string> StringVector;
+typedef tuple<grpc::string, grpc::string> StringPair;
+typedef set<StringPair> StringPairSet;
 
 // Provides RAII indentation handling. Use as:
 // {
@@ -651,6 +656,7 @@ bool PrivateGenerator::PrintPreamble() {
       "face_utilities\n");
   if (generate_in_pb2_grpc) {
     out->Print("\n");
+    StringPairSet imports_set;
     for (int i = 0; i < file->service_count(); ++i) {
       const ServiceDescriptor* service = file->service(i);
       for (int j = 0; j < service->method_count(); ++j) {
@@ -662,11 +668,15 @@ bool PrivateGenerator::PrintPreamble() {
           grpc::string type_file_name = type->file()->name();
           grpc::string module_name = ModuleName(type_file_name);
           grpc::string module_alias = ModuleAlias(type_file_name);
-          out->Print("import $ModuleName$ as $ModuleAlias$\n", "ModuleName",
-                     module_name, "ModuleAlias", module_alias);
+          imports_set.insert(std::make_tuple(module_name, module_alias));
         }
       }
     }
+    for (StringPairSet::iterator it = imports_set.begin();
+         it != imports_set.end(); ++it) {
+      out->Print("import $ModuleName$ as $ModuleAlias$\n", "ModuleName",
+                 std::get<0>(*it), "ModuleAlias", std::get<1>(*it));
+    }
   }
   return true;
 }
@@ -714,6 +724,9 @@ pair<bool, grpc::string> PrivateGenerator::GetGrpcServices() {
     out = &out_printer;
 
     if (generate_in_pb2_grpc) {
+      out->Print(
+          "# Generated by the gRPC Python protocol compiler plugin. "
+          "DO NOT EDIT!\n");
       if (!PrintPreamble()) {
         return make_pair(false, "");
       }

src/core/ext/README.md

@@ -0,0 +1,5 @@
+Optional plugins for gRPC Core: Modules in this directory extend gRPC Core in
+useful ways. All optional code belongs here.
+
+NOTE: The movement of code between lib and ext is an ongoing effort, so this
+directory currently contains too much of the core library.

src/core/ext/census/grpc_filter.c

@@ -154,7 +154,8 @@ static grpc_error *server_init_call_elem(grpc_exec_ctx *exec_ctx,
   memset(d, 0, sizeof(*d));
   d->start_ts = args->start_time;
   /* TODO(hongyu): call census_tracing_start_op here. */
-  grpc_closure_init(&d->finish_recv, server_on_done_recv, elem);
+  grpc_closure_init(&d->finish_recv, server_on_done_recv, elem,
+                    grpc_schedule_on_exec_ctx);
   return GRPC_ERROR_NONE;
 }
 
@@ -167,11 +168,12 @@ static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
   /* TODO(hongyu): record rpc server stats and census_tracing_end_op here */
 }
 
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
   GPR_ASSERT(chand != NULL);
+  return GRPC_ERROR_NONE;
 }
 
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,

src/core/ext/census/grpc_plugin.c

@@ -51,7 +51,8 @@ static bool is_census_enabled(const grpc_channel_args *a) {
   return census_enabled();
 }
 
-static bool maybe_add_census_filter(grpc_channel_stack_builder *builder,
+static bool maybe_add_census_filter(grpc_exec_ctx *exec_ctx,
+                                    grpc_channel_stack_builder *builder,
                                     void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);

src/core/ext/census/tracing.c

@@ -31,19 +31,15 @@
  *
  */
 
-//#include "src/core/ext/census/tracing.h"
-
 #include <grpc/census.h>
 
 /* TODO(aveitch): These are all placeholder implementations. */
 
-// int census_trace_mask(const census_context *context) {
-//   return CENSUS_TRACE_MASK_NONE;
-// }
-
-// void census_set_trace_mask(int trace_mask) {}
+int census_trace_mask(const census_context *context) {
+  return CENSUS_TRACE_MASK_NONE;
+}
 
-// void census_trace_print(census_context *context, uint32_t type,
-//                         const char *buffer, size_t n) {}
+void census_set_trace_mask(int trace_mask) {}
 
-// void SetTracerParams(const Params& params);
+void census_trace_print(census_context *context, uint32_t type,
+                        const char *buffer, size_t n) {}

src/core/ext/client_channel/channel_connectivity.c

@@ -76,6 +76,7 @@ typedef struct {
   gpr_mu mu;
   callback_phase phase;
   grpc_closure on_complete;
+  grpc_closure on_timeout;
   grpc_timer alarm;
   grpc_connectivity_state state;
   grpc_completion_queue *cq;
@@ -198,7 +199,10 @@ void grpc_channel_watch_connectivity_state(
   grpc_cq_begin_op(cq, tag);
 
   gpr_mu_init(&w->mu);
-  grpc_closure_init(&w->on_complete, watch_complete, w);
+  grpc_closure_init(&w->on_complete, watch_complete, w,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&w->on_timeout, timeout_complete, w,
+                    grpc_schedule_on_exec_ctx);
   w->phase = WAITING;
   w->state = last_observed_state;
   w->cq = cq;
@@ -207,7 +211,7 @@ void grpc_channel_watch_connectivity_state(
 
   grpc_timer_init(&exec_ctx, &w->alarm,
                   gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
-                  timeout_complete, w, gpr_now(GPR_CLOCK_MONOTONIC));
+                  &w->on_timeout, gpr_now(GPR_CLOCK_MONOTONIC));
 
   if (client_channel_elem->filter == &grpc_client_channel_filter) {
     GRPC_CHANNEL_INTERNAL_REF(channel, "watch_channel_connectivity");

src/core/ext/client_channel/client_channel.c

@@ -44,6 +44,7 @@
 #include <grpc/support/useful.h>
 
 #include "src/core/ext/client_channel/lb_policy_registry.h"
+#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/connected_channel.h"
@@ -82,8 +83,12 @@ static void *method_parameters_copy(void *value) {
   return new_value;
 }
 
+static void method_parameters_free(grpc_exec_ctx *exec_ctx, void *p) {
+  gpr_free(p);
+}
+
 static const grpc_mdstr_hash_table_vtable method_parameters_vtable = {
-    gpr_free, method_parameters_copy};
+    method_parameters_free, method_parameters_copy};
 
 static void *method_parameters_create_from_json(const grpc_json *json) {
   wait_for_ready_value wait_for_ready = WAIT_FOR_READY_UNSET;
@@ -248,7 +253,8 @@ static void watch_lb_policy(grpc_exec_ctx *exec_ctx, channel_data *chand,
   GRPC_CHANNEL_STACK_REF(chand->owning_stack, "watch_lb_policy");
 
   w->chand = chand;
-  grpc_closure_init(&w->on_changed, on_lb_policy_state_changed, w);
+  grpc_closure_init(&w->on_changed, on_lb_policy_state_changed, w,
+                    grpc_schedule_on_exec_ctx);
   w->state = current_state;
   w->lb_policy = lb_policy;
   grpc_lb_policy_notify_on_state_change(exec_ctx, lb_policy, &w->state,
@@ -326,7 +332,7 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
           grpc_service_config_create(service_config_json);
       if (service_config != NULL) {
         method_params_table = grpc_service_config_create_method_config_table(
-            service_config, method_parameters_create_from_json,
+            exec_ctx, service_config, method_parameters_create_from_json,
             &method_parameters_vtable);
         grpc_service_config_destroy(service_config);
       }
@@ -335,7 +341,7 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
     // be pointing to data inside chand->resolver_result.
     // The copy will be saved in chand->lb_policy_name below.
     lb_policy_name = gpr_strdup(lb_policy_name);
-    grpc_channel_args_destroy(chand->resolver_result);
+    grpc_channel_args_destroy(exec_ctx, chand->resolver_result);
     chand->resolver_result = NULL;
   }
 
@@ -356,18 +362,16 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
     chand->service_config_json = service_config_json;
   }
   if (chand->method_params_table != NULL) {
-    grpc_mdstr_hash_table_unref(chand->method_params_table);
+    grpc_mdstr_hash_table_unref(exec_ctx, chand->method_params_table);
   }
   chand->method_params_table = method_params_table;
   if (lb_policy != NULL) {
-    grpc_exec_ctx_enqueue_list(exec_ctx, &chand->waiting_for_config_closures,
-                               NULL);
+    grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
   } else if (chand->resolver == NULL /* disconnected */) {
     grpc_closure_list_fail_all(
         &chand->waiting_for_config_closures,
         GRPC_ERROR_CREATE_REFERENCING("Channel disconnected", &error, 1));
-    grpc_exec_ctx_enqueue_list(exec_ctx, &chand->waiting_for_config_closures,
-                               NULL);
+    grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
   }
   if (lb_policy != NULL && chand->exit_idle_when_lb_policy_arrives) {
     GRPC_LB_POLICY_REF(lb_policy, "exit_idle");
@@ -424,7 +428,7 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
                                   grpc_transport_op *op) {
   channel_data *chand = elem->channel_data;
 
-  grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE);
 
   GPR_ASSERT(op->set_accept_stream == false);
   if (op->bind_pollset != NULL) {
@@ -443,9 +447,8 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
 
   if (op->send_ping != NULL) {
     if (chand->lb_policy == NULL) {
-      grpc_exec_ctx_sched(exec_ctx, op->send_ping,
-                          GRPC_ERROR_CREATE("Ping with no load balancing"),
-                          NULL);
+      grpc_closure_sched(exec_ctx, op->send_ping,
+                         GRPC_ERROR_CREATE("Ping with no load balancing"));
     } else {
       grpc_lb_policy_ping_one(exec_ctx, chand->lb_policy, op->send_ping);
       op->bind_pollset = NULL;
@@ -464,8 +467,7 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
       if (!chand->started_resolving) {
         grpc_closure_list_fail_all(&chand->waiting_for_config_closures,
                                    GRPC_ERROR_REF(op->disconnect_with_error));
-        grpc_exec_ctx_enqueue_list(exec_ctx,
-                                   &chand->waiting_for_config_closures, NULL);
+        grpc_closure_list_sched(exec_ctx, &chand->waiting_for_config_closures);
       }
       if (chand->lb_policy != NULL) {
         grpc_pollset_set_del_pollset_set(exec_ctx,
@@ -499,24 +501,40 @@ static void cc_get_channel_info(grpc_exec_ctx *exec_ctx,
 }
 
 /* Constructor for channel_data */
-static void cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
-                                 grpc_channel_element *elem,
-                                 grpc_channel_element_args *args) {
+static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                        grpc_channel_element *elem,
+                                        grpc_channel_element_args *args) {
   channel_data *chand = elem->channel_data;
-
   memset(chand, 0, sizeof(*chand));
-
   GPR_ASSERT(args->is_last);
   GPR_ASSERT(elem->filter == &grpc_client_channel_filter);
-
+  // Initialize data members.
   gpr_mu_init(&chand->mu);
-  grpc_closure_init(&chand->on_resolver_result_changed,
-                    on_resolver_result_changed, chand);
   chand->owning_stack = args->channel_stack;
-
+  grpc_closure_init(&chand->on_resolver_result_changed,
+                    on_resolver_result_changed, chand,
+                    grpc_schedule_on_exec_ctx);
+  chand->interested_parties = grpc_pollset_set_create();
   grpc_connectivity_state_init(&chand->state_tracker, GRPC_CHANNEL_IDLE,
                                "client_channel");
-  chand->interested_parties = grpc_pollset_set_create();
+  // Record client channel factory.
+  const grpc_arg *arg = grpc_channel_args_find(args->channel_args,
+                                               GRPC_ARG_CLIENT_CHANNEL_FACTORY);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
+  grpc_client_channel_factory_ref(arg->value.pointer.p);
+  chand->client_channel_factory = arg->value.pointer.p;
+  // Instantiate resolver.
+  arg = grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  chand->resolver =
+      grpc_resolver_create(exec_ctx, arg->value.string, args->channel_args,
+                           chand->interested_parties);
+  if (chand->resolver == NULL) {
+    return GRPC_ERROR_CREATE("resolver creation failed");
+  }
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel_data */
@@ -540,7 +558,7 @@ static void cc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   gpr_free(chand->lb_policy_name);
   gpr_free(chand->service_config_json);
   if (chand->method_params_table != NULL) {
-    grpc_mdstr_hash_table_unref(chand->method_params_table);
+    grpc_mdstr_hash_table_unref(exec_ctx, chand->method_params_table);
   }
   grpc_connectivity_state_destroy(exec_ctx, &chand->state_tracker);
   grpc_pollset_set_destroy(chand->interested_parties);
@@ -662,8 +680,9 @@ static void retry_waiting_locked(grpc_exec_ctx *exec_ctx, call_data *calld) {
   calld->waiting_ops_count = 0;
   calld->waiting_ops_capacity = 0;
   GRPC_SUBCHANNEL_CALL_REF(a->call, "retry_ops");
-  grpc_exec_ctx_sched(exec_ctx, grpc_closure_create(retry_ops, a),
-                      GRPC_ERROR_NONE, NULL);
+  grpc_closure_sched(
+      exec_ctx, grpc_closure_create(retry_ops, a, grpc_schedule_on_exec_ctx),
+      GRPC_ERROR_NONE);
 }
 
 static void subchannel_ready(grpc_exec_ctx *exec_ctx, void *arg,
@@ -683,9 +702,15 @@ static void subchannel_ready(grpc_exec_ctx *exec_ctx, void *arg,
                                      "Failed to create subchannel", &error, 1));
   } else if (GET_CALL(calld) == CANCELLED_CALL) {
     /* already cancelled before subchannel became ready */
-    fail_locked(exec_ctx, calld,
-                GRPC_ERROR_CREATE_REFERENCING(
-                    "Cancelled before creating subchannel", &error, 1));
+    grpc_error *cancellation_error = GRPC_ERROR_CREATE_REFERENCING(
+        "Cancelled before creating subchannel", &error, 1);
+    /* if due to deadline, attach the deadline exceeded status to the error */
+    if (gpr_time_cmp(calld->deadline, gpr_now(GPR_CLOCK_MONOTONIC)) < 0) {
+      cancellation_error =
+          grpc_error_set_int(cancellation_error, GRPC_ERROR_INT_GRPC_STATUS,
+                             GRPC_STATUS_DEADLINE_EXCEEDED);
+    }
+    fail_locked(exec_ctx, calld, cancellation_error);
   } else {
     /* Create call on subchannel. */
     grpc_subchannel_call *subchannel_call = NULL;
@@ -739,14 +764,14 @@ static void continue_picking(grpc_exec_ctx *exec_ctx, void *arg,
   if (cpa->connected_subchannel == NULL) {
     /* cancelled, do nothing */
   } else if (error != GRPC_ERROR_NONE) {
-    grpc_exec_ctx_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_REF(error), NULL);
+    grpc_closure_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_REF(error));
   } else {
     call_data *calld = cpa->elem->call_data;
     gpr_mu_lock(&calld->mu);
     if (pick_subchannel(exec_ctx, cpa->elem, cpa->initial_metadata,
                         cpa->initial_metadata_flags, cpa->connected_subchannel,
                         cpa->on_ready, GRPC_ERROR_NONE)) {
-      grpc_exec_ctx_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_NONE, NULL);
+      grpc_closure_sched(exec_ctx, cpa->on_ready, GRPC_ERROR_NONE);
     }
     gpr_mu_unlock(&calld->mu);
   }
@@ -778,9 +803,9 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
       cpa = closure->cb_arg;
       if (cpa->connected_subchannel == connected_subchannel) {
         cpa->connected_subchannel = NULL;
-        grpc_exec_ctx_sched(
+        grpc_closure_sched(
             exec_ctx, cpa->on_ready,
-            GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+            GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       }
     }
     gpr_mu_unlock(&chand->mu);
@@ -809,7 +834,6 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
         initial_metadata_flags &= ~GRPC_INITIAL_METADATA_WAIT_FOR_READY;
       }
     }
-    // TODO(dgq): make this deadline configurable somehow.
     const grpc_lb_policy_pick_args inputs = {
         initial_metadata, initial_metadata_flags, &calld->lb_token_mdelem,
         gpr_inf_future(GPR_CLOCK_MONOTONIC)};
@@ -832,12 +856,12 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     cpa->connected_subchannel = connected_subchannel;
     cpa->on_ready = on_ready;
     cpa->elem = elem;
-    grpc_closure_init(&cpa->closure, continue_picking, cpa);
+    grpc_closure_init(&cpa->closure, continue_picking, cpa,
+                      grpc_schedule_on_exec_ctx);
     grpc_closure_list_append(&chand->waiting_for_config_closures, &cpa->closure,
                              GRPC_ERROR_NONE);
   } else {
-    grpc_exec_ctx_sched(exec_ctx, on_ready, GRPC_ERROR_CREATE("Disconnected"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, on_ready, GRPC_ERROR_CREATE("Disconnected"));
   }
   gpr_mu_unlock(&chand->mu);
 
@@ -922,7 +946,8 @@ retry:
       calld->connected_subchannel == NULL &&
       op->send_initial_metadata != NULL) {
     calld->creation_phase = GRPC_SUBCHANNEL_CALL_HOLDER_PICKING_SUBCHANNEL;
-    grpc_closure_init(&calld->next_step, subchannel_ready, elem);
+    grpc_closure_init(&calld->next_step, subchannel_ready, elem,
+                      grpc_schedule_on_exec_ctx);
     GRPC_CALL_STACK_REF(calld->owning_call, "pick_subchannel");
     /* If a subchannel is not available immediately, the polling entity from
        call_data should be provided to channel_data's interested_parties, so
@@ -980,8 +1005,8 @@ static void read_service_config(grpc_exec_ctx *exec_ctx, void *arg,
     gpr_mu_unlock(&chand->mu);
     // If the method config table was present, use it.
     if (method_params_table != NULL) {
-      const method_parameters *method_params =
-          grpc_method_config_table_get(method_params_table, calld->path);
+      const method_parameters *method_params = grpc_method_config_table_get(
+          exec_ctx, method_params_table, calld->path);
       if (method_params != NULL) {
         const bool have_method_timeout =
             gpr_time_cmp(method_params->timeout, gpr_time_0(GPR_TIMESPAN)) != 0;
@@ -1004,7 +1029,7 @@ static void read_service_config(grpc_exec_ctx *exec_ctx, void *arg,
           gpr_mu_unlock(&calld->mu);
         }
       }
-      grpc_mdstr_hash_table_unref(method_params_table);
+      grpc_mdstr_hash_table_unref(exec_ctx, method_params_table);
     }
   }
   GRPC_CALL_STACK_UNREF(exec_ctx, calld->owning_call, "read_service_config");
@@ -1045,8 +1070,8 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
       grpc_mdstr_hash_table *method_params_table =
           grpc_mdstr_hash_table_ref(chand->method_params_table);
       gpr_mu_unlock(&chand->mu);
-      method_parameters *method_params =
-          grpc_method_config_table_get(method_params_table, args->path);
+      method_parameters *method_params = grpc_method_config_table_get(
+          exec_ctx, method_params_table, args->path);
       if (method_params != NULL) {
         if (gpr_time_cmp(method_params->timeout,
                          gpr_time_0(GPR_CLOCK_MONOTONIC)) != 0) {
@@ -1059,7 +1084,7 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
               method_params->wait_for_ready;
         }
       }
-      grpc_mdstr_hash_table_unref(method_params_table);
+      grpc_mdstr_hash_table_unref(exec_ctx, method_params_table);
     } else {
       gpr_mu_unlock(&chand->mu);
     }
@@ -1068,7 +1093,8 @@ static grpc_error *cc_init_call_elem(grpc_exec_ctx *exec_ctx,
     // get the service config data once the resolver returns.
     // Take a reference to the call stack to be owned by the callback.
     GRPC_CALL_STACK_REF(calld->owning_call, "read_service_config");
-    grpc_closure_init(&calld->read_service_config, read_service_config, elem);
+    grpc_closure_init(&calld->read_service_config, read_service_config, elem,
+                      grpc_schedule_on_exec_ctx);
     grpc_closure_list_append(&chand->waiting_for_config_closures,
                              &calld->read_service_config, GRPC_ERROR_NONE);
     gpr_mu_unlock(&chand->mu);
@@ -1087,7 +1113,7 @@ static void cc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                  void *and_free_memory) {
   call_data *calld = elem->call_data;
   grpc_deadline_state_destroy(exec_ctx, elem);
-  GRPC_MDSTR_UNREF(calld->path);
+  GRPC_MDSTR_UNREF(exec_ctx, calld->path);
   GRPC_ERROR_UNREF(calld->cancel_error);
   grpc_subchannel_call *call = GET_CALL(calld);
   if (call != NULL && call != CANCELLED_CALL) {
@@ -1130,30 +1156,6 @@ const grpc_channel_filter grpc_client_channel_filter = {
     "client-channel",
 };
 
-void grpc_client_channel_finish_initialization(
-    grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
-    grpc_resolver *resolver,
-    grpc_client_channel_factory *client_channel_factory) {
-  /* post construction initialization: set the transport setup pointer */
-  GPR_ASSERT(client_channel_factory != NULL);
-  grpc_channel_element *elem = grpc_channel_stack_last_element(channel_stack);
-  channel_data *chand = elem->channel_data;
-  gpr_mu_lock(&chand->mu);
-  GPR_ASSERT(!chand->resolver);
-  chand->resolver = resolver;
-  GRPC_RESOLVER_REF(resolver, "channel");
-  if (!grpc_closure_list_empty(chand->waiting_for_config_closures) ||
-      chand->exit_idle_when_lb_policy_arrives) {
-    chand->started_resolving = true;
-    GRPC_CHANNEL_STACK_REF(chand->owning_stack, "resolver");
-    grpc_resolver_next(exec_ctx, resolver, &chand->resolver_result,
-                       &chand->on_resolver_result_changed);
-  }
-  chand->client_channel_factory = client_channel_factory;
-  grpc_client_channel_factory_ref(client_channel_factory);
-  gpr_mu_unlock(&chand->mu);
-}
-
 grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) {
   channel_data *chand = elem->channel_data;
@@ -1205,7 +1207,8 @@ void grpc_client_channel_watch_connectivity_state(
   w->pollset = pollset;
   w->on_complete = on_complete;
   grpc_pollset_set_add_pollset(exec_ctx, chand->interested_parties, pollset);
-  grpc_closure_init(&w->my_closure, on_external_watch_complete, w);
+  grpc_closure_init(&w->my_closure, on_external_watch_complete, w,
+                    grpc_schedule_on_exec_ctx);
   GRPC_CHANNEL_STACK_REF(w->chand->owning_stack,
                          "external_connectivity_watcher");
   gpr_mu_lock(&chand->mu);

src/core/ext/client_channel/client_channel.h

@@ -38,6 +38,9 @@
 #include "src/core/ext/client_channel/resolver.h"
 #include "src/core/lib/channel/channel_stack.h"
 
+// Channel arg key for server URI string.
+#define GRPC_ARG_SERVER_URI "grpc.server_uri"
+
 /* A client channel is a channel that begins disconnected, and can connect
    to some endpoint on demand. If that endpoint disconnects, it will be
    connected to again later.
@@ -47,13 +50,6 @@
 
 extern const grpc_channel_filter grpc_client_channel_filter;
 
-/* Post-construction initializer to give the client channel its resolver
-   and factory. */
-void grpc_client_channel_finish_initialization(
-    grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
-    grpc_resolver *resolver,
-    grpc_client_channel_factory *client_channel_factory);
-
 grpc_connectivity_state grpc_client_channel_check_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect);
 

src/core/ext/client_channel/client_channel_factory.c

@@ -55,3 +55,33 @@ grpc_channel* grpc_client_channel_factory_create_channel(
   return factory->vtable->create_client_channel(exec_ctx, factory, target, type,
                                                 args);
 }
+
+static void* factory_arg_copy(void* factory) {
+  grpc_client_channel_factory_ref(factory);
+  return factory;
+}
+
+static void factory_arg_destroy(grpc_exec_ctx* exec_ctx, void* factory) {
+  // TODO(roth): Remove local exec_ctx when
+  // https://github.com/grpc/grpc/pull/8705 is merged.
+  grpc_client_channel_factory_unref(exec_ctx, factory);
+}
+
+static int factory_arg_cmp(void* factory1, void* factory2) {
+  if (factory1 < factory2) return -1;
+  if (factory1 > factory2) return 1;
+  return 0;
+}
+
+static const grpc_arg_pointer_vtable factory_arg_vtable = {
+    factory_arg_copy, factory_arg_destroy, factory_arg_cmp};
+
+grpc_arg grpc_client_channel_factory_create_channel_arg(
+    grpc_client_channel_factory* factory) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = GRPC_ARG_CLIENT_CHANNEL_FACTORY;
+  arg.value.pointer.p = factory;
+  arg.value.pointer.vtable = &factory_arg_vtable;
+  return arg;
+}

src/core/ext/client_channel/client_channel_factory.h

@@ -39,6 +39,9 @@
 #include "src/core/ext/client_channel/subchannel.h"
 #include "src/core/lib/channel/channel_stack.h"
 
+// Channel arg key for client channel factory.
+#define GRPC_ARG_CLIENT_CHANNEL_FACTORY "grpc.client_channel_factory"
+
 typedef struct grpc_client_channel_factory grpc_client_channel_factory;
 typedef struct grpc_client_channel_factory_vtable
     grpc_client_channel_factory_vtable;
@@ -83,4 +86,7 @@ grpc_channel *grpc_client_channel_factory_create_channel(
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args);
 
+grpc_arg grpc_client_channel_factory_create_channel_arg(
+    grpc_client_channel_factory *factory);
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_CLIENT_CHANNEL_FACTORY_H */

src/core/ext/client_channel/client_channel_plugin.c

@@ -38,17 +38,20 @@
 #include <grpc/support/alloc.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
+#include "src/core/ext/client_channel/http_connect_handshaker.h"
 #include "src/core/ext/client_channel/lb_policy_registry.h"
 #include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/subchannel_index.h"
 #include "src/core/lib/surface/channel_init.h"
 
-static bool append_filter(grpc_channel_stack_builder *builder, void *arg) {
+static bool append_filter(grpc_exec_ctx *exec_ctx,
+                          grpc_channel_stack_builder *builder, void *arg) {
   return grpc_channel_stack_builder_append_filter(
       builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
-static bool set_default_host_if_unset(grpc_channel_stack_builder *builder,
+static bool set_default_host_if_unset(grpc_exec_ctx *exec_ctx,
+                                      grpc_channel_stack_builder *builder,
                                       void *unused) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
@@ -66,9 +69,10 @@ static bool set_default_host_if_unset(grpc_channel_stack_builder *builder,
     arg.key = GRPC_ARG_DEFAULT_AUTHORITY;
     arg.value.string = default_authority;
     grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
-    grpc_channel_stack_builder_set_channel_arguments(builder, new_args);
+    grpc_channel_stack_builder_set_channel_arguments(exec_ctx, builder,
+                                                     new_args);
     gpr_free(default_authority);
-    grpc_channel_args_destroy(new_args);
+    grpc_channel_args_destroy(exec_ctx, new_args);
   }
   return true;
 }
@@ -81,6 +85,7 @@ void grpc_client_channel_init(void) {
                                    set_default_host_if_unset, NULL);
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, append_filter,
                                    (void *)&grpc_client_channel_filter);
+  grpc_http_connect_register_handshaker_factory();
 }
 
 void grpc_client_channel_shutdown(void) {

src/core/ext/client_channel/http_connect_handshaker.c

@@ -40,10 +40,14 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/ext/client_channel/client_channel.h"
+#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/client_channel/uri_parser.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/http/format_request.h"
 #include "src/core/lib/http/parser.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/env.h"
 
 typedef struct http_connect_handshaker {
@@ -51,7 +55,8 @@ typedef struct http_connect_handshaker {
   grpc_handshaker base;
 
   char* proxy_server;
-  char* server_name;
+  grpc_http_header* headers;
+  size_t num_headers;
 
   gpr_refcount refcount;
   gpr_mu mu;
@@ -82,12 +87,17 @@ static void http_connect_handshaker_unref(grpc_exec_ctx* exec_ctx,
       grpc_endpoint_destroy(exec_ctx, handshaker->endpoint_to_destroy);
     }
     if (handshaker->read_buffer_to_destroy != NULL) {
-      grpc_slice_buffer_destroy(handshaker->read_buffer_to_destroy);
+      grpc_slice_buffer_destroy_internal(exec_ctx,
+                                         handshaker->read_buffer_to_destroy);
       gpr_free(handshaker->read_buffer_to_destroy);
     }
     gpr_free(handshaker->proxy_server);
-    gpr_free(handshaker->server_name);
-    grpc_slice_buffer_destroy(&handshaker->write_buffer);
+    for (size_t i = 0; i < handshaker->num_headers; ++i) {
+      gpr_free(handshaker->headers[i].key);
+      gpr_free(handshaker->headers[i].value);
+    }
+    gpr_free(handshaker->headers);
+    grpc_slice_buffer_destroy_internal(exec_ctx, &handshaker->write_buffer);
     grpc_http_parser_destroy(&handshaker->http_parser);
     grpc_http_response_destroy(&handshaker->http_response);
     gpr_free(handshaker);
@@ -97,12 +107,12 @@ static void http_connect_handshaker_unref(grpc_exec_ctx* exec_ctx,
 // Set args fields to NULL, saving the endpoint and read buffer for
 // later destruction.
 static void cleanup_args_for_failure_locked(
-    http_connect_handshaker* handshaker) {
+    grpc_exec_ctx* exec_ctx, http_connect_handshaker* handshaker) {
   handshaker->endpoint_to_destroy = handshaker->args->endpoint;
   handshaker->args->endpoint = NULL;
   handshaker->read_buffer_to_destroy = handshaker->args->read_buffer;
   handshaker->args->read_buffer = NULL;
-  grpc_channel_args_destroy(handshaker->args->args);
+  grpc_channel_args_destroy(exec_ctx, handshaker->args->args);
   handshaker->args->args = NULL;
 }
 
@@ -125,13 +135,13 @@ static void handshake_failed_locked(grpc_exec_ctx* exec_ctx,
     grpc_endpoint_shutdown(exec_ctx, handshaker->args->endpoint);
     // Not shutting down, so the handshake failed.  Clean up before
     // invoking the callback.
-    cleanup_args_for_failure_locked(handshaker);
+    cleanup_args_for_failure_locked(exec_ctx, handshaker);
     // Set shutdown to true so that subsequent calls to
     // http_connect_handshaker_shutdown() do nothing.
     handshaker->shutdown = true;
   }
   // Invoke callback.
-  grpc_exec_ctx_sched(exec_ctx, handshaker->on_handshake_done, error, NULL);
+  grpc_closure_sched(exec_ctx, handshaker->on_handshake_done, error);
 }
 
 // Callback invoked when finished writing HTTP CONNECT request.
@@ -193,7 +203,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
                                &handshaker->args->read_buffer->slices[i + 1],
                                handshaker->args->read_buffer->count - i - 1);
         grpc_slice_buffer_swap(handshaker->args->read_buffer, &tmp_buffer);
-        grpc_slice_buffer_destroy(&tmp_buffer);
+        grpc_slice_buffer_destroy_internal(exec_ctx, &tmp_buffer);
         break;
       }
     }
@@ -210,7 +220,8 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   // complete (e.g., handling chunked transfer encoding or looking
   // at the Content-Length: header).
   if (handshaker->http_parser.state != GRPC_HTTP_BODY) {
-    grpc_slice_buffer_reset_and_unref(handshaker->args->read_buffer);
+    grpc_slice_buffer_reset_and_unref_internal(exec_ctx,
+                                               handshaker->args->read_buffer);
     grpc_endpoint_read(exec_ctx, handshaker->args->endpoint,
                        handshaker->args->read_buffer,
                        &handshaker->response_read_closure);
@@ -229,7 +240,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
     goto done;
   }
   // Success.  Invoke handshake-done callback.
-  grpc_exec_ctx_sched(exec_ctx, handshaker->on_handshake_done, error, NULL);
+  grpc_closure_sched(exec_ctx, handshaker->on_handshake_done, error);
 done:
   // Set shutdown to true so that subsequent calls to
   // http_connect_handshaker_shutdown() do nothing.
@@ -255,7 +266,7 @@ static void http_connect_handshaker_shutdown(grpc_exec_ctx* exec_ctx,
   if (!handshaker->shutdown) {
     handshaker->shutdown = true;
     grpc_endpoint_shutdown(exec_ctx, handshaker->args->endpoint);
-    cleanup_args_for_failure_locked(handshaker);
+    cleanup_args_for_failure_locked(exec_ctx, handshaker);
   }
   gpr_mu_unlock(&handshaker->mu);
 }
@@ -265,18 +276,29 @@ static void http_connect_handshaker_do_handshake(
     grpc_tcp_server_acceptor* acceptor, grpc_closure* on_handshake_done,
     grpc_handshaker_args* args) {
   http_connect_handshaker* handshaker = (http_connect_handshaker*)handshaker_in;
-  gpr_mu_lock(&handshaker->mu);
+  // Get server name from channel args.
+  const grpc_arg* arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  char* canonical_uri =
+      grpc_resolver_factory_add_default_prefix_if_needed(arg->value.string);
+  grpc_uri* uri = grpc_uri_parse(canonical_uri, 1);
+  char* server_name = uri->path;
+  if (server_name[0] == '/') ++server_name;
   // Save state in the handshaker object.
+  gpr_mu_lock(&handshaker->mu);
   handshaker->args = args;
   handshaker->on_handshake_done = on_handshake_done;
   // Send HTTP CONNECT request.
-  gpr_log(GPR_INFO, "Connecting to server %s via HTTP proxy %s",
-          handshaker->server_name, handshaker->proxy_server);
+  gpr_log(GPR_INFO, "Connecting to server %s via HTTP proxy %s", server_name,
+          handshaker->proxy_server);
   grpc_httpcli_request request;
   memset(&request, 0, sizeof(request));
-  request.host = handshaker->proxy_server;
+  request.host = server_name;
   request.http.method = "CONNECT";
-  request.http.path = handshaker->server_name;
+  request.http.path = server_name;
+  request.http.hdrs = handshaker->headers;
+  request.http.hdr_count = handshaker->num_headers;
   request.handshaker = &grpc_httpcli_plaintext;
   grpc_slice request_slice = grpc_httpcli_format_connect_request(&request);
   grpc_slice_buffer_add(&handshaker->write_buffer, request_slice);
@@ -285,6 +307,9 @@ static void http_connect_handshaker_do_handshake(
   grpc_endpoint_write(exec_ctx, args->endpoint, &handshaker->write_buffer,
                       &handshaker->request_done_closure);
   gpr_mu_unlock(&handshaker->mu);
+  // Clean up.
+  gpr_free(canonical_uri);
+  grpc_uri_destroy(uri);
 }
 
 static const grpc_handshaker_vtable http_connect_handshaker_vtable = {
@@ -292,21 +317,28 @@ static const grpc_handshaker_vtable http_connect_handshaker_vtable = {
     http_connect_handshaker_do_handshake};
 
 grpc_handshaker* grpc_http_connect_handshaker_create(const char* proxy_server,
-                                                     const char* server_name) {
+                                                     grpc_http_header* headers,
+                                                     size_t num_headers) {
   GPR_ASSERT(proxy_server != NULL);
-  GPR_ASSERT(server_name != NULL);
   http_connect_handshaker* handshaker = gpr_malloc(sizeof(*handshaker));
   memset(handshaker, 0, sizeof(*handshaker));
   grpc_handshaker_init(&http_connect_handshaker_vtable, &handshaker->base);
   gpr_mu_init(&handshaker->mu);
   gpr_ref_init(&handshaker->refcount, 1);
   handshaker->proxy_server = gpr_strdup(proxy_server);
-  handshaker->server_name = gpr_strdup(server_name);
+  if (num_headers > 0) {
+    handshaker->headers = gpr_malloc(sizeof(grpc_http_header) * num_headers);
+    for (size_t i = 0; i < num_headers; ++i) {
+      handshaker->headers[i].key = gpr_strdup(headers[i].key);
+      handshaker->headers[i].value = gpr_strdup(headers[i].value);
+    }
+    handshaker->num_headers = num_headers;
+  }
   grpc_slice_buffer_init(&handshaker->write_buffer);
   grpc_closure_init(&handshaker->request_done_closure, on_write_done,
-                    handshaker);
+                    handshaker, grpc_schedule_on_exec_ctx);
   grpc_closure_init(&handshaker->response_read_closure, on_read_done,
-                    handshaker);
+                    handshaker, grpc_schedule_on_exec_ctx);
   grpc_http_parser_init(&handshaker->http_parser, GRPC_HTTP_RESPONSE,
                         &handshaker->http_response);
   return &handshaker->base;
@@ -335,3 +367,33 @@ done:
   grpc_uri_destroy(uri);
   return proxy_name;
 }
+
+//
+// handshaker factory
+//
+
+static void handshaker_factory_add_handshakers(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory* factory,
+    const grpc_channel_args* args, grpc_handshake_manager* handshake_mgr) {
+  char* proxy_name = grpc_get_http_proxy_server();
+  if (proxy_name != NULL) {
+    grpc_handshake_manager_add(
+        handshake_mgr,
+        grpc_http_connect_handshaker_create(proxy_name, NULL, 0));
+    gpr_free(proxy_name);
+  }
+}
+
+static void handshaker_factory_destroy(grpc_exec_ctx* exec_ctx,
+                                       grpc_handshaker_factory* factory) {}
+
+static const grpc_handshaker_factory_vtable handshaker_factory_vtable = {
+    handshaker_factory_add_handshakers, handshaker_factory_destroy};
+
+static grpc_handshaker_factory handshaker_factory = {
+    &handshaker_factory_vtable};
+
+void grpc_http_connect_register_handshaker_factory() {
+  grpc_handshaker_factory_register(true /* at_start */, HANDSHAKER_CLIENT,
+                                   &handshaker_factory);
+}

src/core/ext/client_channel/http_connect_handshaker.h

@@ -35,13 +35,18 @@
 #define GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
 
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/http/parser.h"
 
-/// Does NOT take ownership of \a proxy_server or \a server_name.
+/// Creates a new HTTP CONNECT handshaker.
 grpc_handshaker* grpc_http_connect_handshaker_create(const char* proxy_server,
-                                                     const char* server_name);
+                                                     grpc_http_header* headers,
+                                                     size_t num_headers);
 
 /// Returns the name of the proxy to use, or NULL if no proxy is configured.
 /// Caller takes ownership of result.
 char* grpc_get_http_proxy_server();
 
+/// Registers handshaker factory.
+void grpc_http_connect_register_handshaker_factory();
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H */

src/core/ext/client_channel/lb_policy_factory.c

@@ -112,11 +112,13 @@ int grpc_lb_addresses_cmp(const grpc_lb_addresses* addresses1,
   return 0;
 }
 
-void grpc_lb_addresses_destroy(grpc_lb_addresses* addresses) {
+void grpc_lb_addresses_destroy(grpc_exec_ctx* exec_ctx,
+                               grpc_lb_addresses* addresses) {
   for (size_t i = 0; i < addresses->num_addresses; ++i) {
     gpr_free(addresses->addresses[i].balancer_name);
     if (addresses->addresses[i].user_data != NULL) {
-      addresses->user_data_vtable->destroy(addresses->addresses[i].user_data);
+      addresses->user_data_vtable->destroy(exec_ctx,
+                                           addresses->addresses[i].user_data);
     }
   }
   gpr_free(addresses->addresses);
@@ -126,8 +128,8 @@ void grpc_lb_addresses_destroy(grpc_lb_addresses* addresses) {
 static void* lb_addresses_copy(void* addresses) {
   return grpc_lb_addresses_copy(addresses);
 }
-static void lb_addresses_destroy(void* addresses) {
-  grpc_lb_addresses_destroy(addresses);
+static void lb_addresses_destroy(grpc_exec_ctx* exec_ctx, void* addresses) {
+  grpc_lb_addresses_destroy(exec_ctx, addresses);
 }
 static int lb_addresses_cmp(void* addresses1, void* addresses2) {
   return grpc_lb_addresses_cmp(addresses1, addresses2);

src/core/ext/client_channel/lb_policy_factory.h

@@ -40,6 +40,9 @@
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 
+// Channel arg key for grpc_lb_addresses.
+#define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
+
 typedef struct grpc_lb_policy_factory grpc_lb_policy_factory;
 typedef struct grpc_lb_policy_factory_vtable grpc_lb_policy_factory_vtable;
 
@@ -61,7 +64,7 @@ typedef struct grpc_lb_address {
 
 typedef struct grpc_lb_user_data_vtable {
   void *(*copy)(void *);
-  void (*destroy)(void *);
+  void (*destroy)(grpc_exec_ctx *exec_ctx, void *);
   int (*cmp)(void *, void *);
 } grpc_lb_user_data_vtable;
 
@@ -93,7 +96,8 @@ int grpc_lb_addresses_cmp(const grpc_lb_addresses *addresses1,
                           const grpc_lb_addresses *addresses2);
 
 /** Destroys \a addresses. */
-void grpc_lb_addresses_destroy(grpc_lb_addresses *addresses);
+void grpc_lb_addresses_destroy(grpc_exec_ctx *exec_ctx,
+                               grpc_lb_addresses *addresses);
 
 /** Returns a channel arg containing \a addresses. */
 grpc_arg grpc_lb_addresses_create_channel_arg(

src/core/ext/client_channel/resolver_factory.c

@@ -43,9 +43,10 @@ void grpc_resolver_factory_unref(grpc_resolver_factory* factory) {
 
 /** Create a resolver instance for a name */
 grpc_resolver* grpc_resolver_factory_create_resolver(
-    grpc_resolver_factory* factory, grpc_resolver_args* args) {
+    grpc_exec_ctx* exec_ctx, grpc_resolver_factory* factory,
+    grpc_resolver_args* args) {
   if (factory == NULL) return NULL;
-  return factory->vtable->create_resolver(factory, args);
+  return factory->vtable->create_resolver(exec_ctx, factory, args);
 }
 
 char* grpc_resolver_factory_get_default_authority(

src/core/ext/client_channel/resolver_factory.h

@@ -37,6 +37,7 @@
 #include "src/core/ext/client_channel/client_channel_factory.h"
 #include "src/core/ext/client_channel/resolver.h"
 #include "src/core/ext/client_channel/uri_parser.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 typedef struct grpc_resolver_factory grpc_resolver_factory;
 typedef struct grpc_resolver_factory_vtable grpc_resolver_factory_vtable;
@@ -48,6 +49,7 @@ struct grpc_resolver_factory {
 typedef struct grpc_resolver_args {
   grpc_uri *uri;
   const grpc_channel_args *args;
+  grpc_pollset_set *pollset_set;
 } grpc_resolver_args;
 
 struct grpc_resolver_factory_vtable {
@@ -55,7 +57,8 @@ struct grpc_resolver_factory_vtable {
   void (*unref)(grpc_resolver_factory *factory);
 
   /** Implementation of grpc_resolver_factory_create_resolver */
-  grpc_resolver *(*create_resolver)(grpc_resolver_factory *factory,
+  grpc_resolver *(*create_resolver)(grpc_exec_ctx *exec_ctx,
+                                    grpc_resolver_factory *factory,
                                     grpc_resolver_args *args);
 
   /** Implementation of grpc_resolver_factory_get_default_authority */
@@ -70,7 +73,8 @@ void grpc_resolver_factory_unref(grpc_resolver_factory *resolver);
 
 /** Create a resolver instance for a name */
 grpc_resolver *grpc_resolver_factory_create_resolver(
-    grpc_resolver_factory *factory, grpc_resolver_args *args);
+    grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,
+    grpc_resolver_args *args);
 
 /** Return a (freshly allocated with gpr_malloc) string representing
     the default authority to use for this scheme. */

src/core/ext/client_channel/resolver_registry.c

@@ -109,8 +109,8 @@ static grpc_resolver_factory *lookup_factory_by_uri(grpc_uri *uri) {
 }
 
 static grpc_resolver_factory *resolve_factory(const char *target,
-                                              grpc_uri **uri) {
-  char *tmp;
+                                              grpc_uri **uri,
+                                              char **canonical_target) {
   grpc_resolver_factory *factory = NULL;
 
   GPR_ASSERT(uri != NULL);
@@ -118,37 +118,54 @@ static grpc_resolver_factory *resolve_factory(const char *target,
   factory = lookup_factory_by_uri(*uri);
   if (factory == NULL) {
     grpc_uri_destroy(*uri);
-    gpr_asprintf(&tmp, "%s%s", g_default_resolver_prefix, target);
-    *uri = grpc_uri_parse(tmp, 1);
+    gpr_asprintf(canonical_target, "%s%s", g_default_resolver_prefix, target);
+    *uri = grpc_uri_parse(*canonical_target, 1);
     factory = lookup_factory_by_uri(*uri);
     if (factory == NULL) {
       grpc_uri_destroy(grpc_uri_parse(target, 0));
-      grpc_uri_destroy(grpc_uri_parse(tmp, 0));
-      gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target, tmp);
+      grpc_uri_destroy(grpc_uri_parse(*canonical_target, 0));
+      gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target,
+              *canonical_target);
     }
-    gpr_free(tmp);
   }
   return factory;
 }
 
-grpc_resolver *grpc_resolver_create(const char *target,
-                                    const grpc_channel_args *args) {
+grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+                                    const grpc_channel_args *args,
+                                    grpc_pollset_set *pollset_set) {
   grpc_uri *uri = NULL;
-  grpc_resolver_factory *factory = resolve_factory(target, &uri);
+  char *canonical_target = NULL;
+  grpc_resolver_factory *factory =
+      resolve_factory(target, &uri, &canonical_target);
   grpc_resolver *resolver;
   grpc_resolver_args resolver_args;
   memset(&resolver_args, 0, sizeof(resolver_args));
   resolver_args.uri = uri;
   resolver_args.args = args;
-  resolver = grpc_resolver_factory_create_resolver(factory, &resolver_args);
+  resolver_args.pollset_set = pollset_set;
+  resolver =
+      grpc_resolver_factory_create_resolver(exec_ctx, factory, &resolver_args);
   grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
   return resolver;
 }
 
 char *grpc_get_default_authority(const char *target) {
   grpc_uri *uri = NULL;
-  grpc_resolver_factory *factory = resolve_factory(target, &uri);
+  char *canonical_target = NULL;
+  grpc_resolver_factory *factory =
+      resolve_factory(target, &uri, &canonical_target);
   char *authority = grpc_resolver_factory_get_default_authority(factory, uri);
   grpc_uri_destroy(uri);
+  gpr_free(canonical_target);
   return authority;
 }
+
+char *grpc_resolver_factory_add_default_prefix_if_needed(const char *target) {
+  grpc_uri *uri = NULL;
+  char *canonical_target = NULL;
+  resolve_factory(target, &uri, &canonical_target);
+  grpc_uri_destroy(uri);
+  return canonical_target == NULL ? gpr_strdup(target) : canonical_target;
+}

src/core/ext/client_channel/resolver_registry.h

@@ -35,6 +35,7 @@
 #define GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H
 
 #include "src/core/ext/client_channel/resolver_factory.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 void grpc_resolver_registry_init();
 void grpc_resolver_registry_shutdown(void);
@@ -60,8 +61,9 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory);
     If a resolver factory was not found, return NULL.
     \a args is a set of channel arguments to be included in the result
     (typically the set of arguments passed in from the client API). */
-grpc_resolver *grpc_resolver_create(const char *target,
-                                    const grpc_channel_args *args);
+grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+                                    const grpc_channel_args *args,
+                                    grpc_pollset_set *pollset_set);
 
 /** Find a resolver factory given a name and return an (owned-by-the-caller)
  *  reference to it */
@@ -71,4 +73,8 @@ grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name);
     representing the default authority to pass from a client. */
 char *grpc_get_default_authority(const char *target);
 
+/** Returns a newly allocated string containing \a target, adding the
+    default prefix if needed. */
+char *grpc_resolver_factory_add_default_prefix_if_needed(const char *target);
+
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_RESOLVER_REGISTRY_H */

src/core/ext/client_channel/subchannel.c

@@ -46,6 +46,7 @@
 #include "src/core/lib/channel/connected_channel.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/backoff.h"
 #include "src/core/lib/surface/channel.h"
 #include "src/core/lib/surface/channel_init.h"
@@ -108,6 +109,9 @@ struct grpc_subchannel {
   /** callback for connection finishing */
   grpc_closure connected;
 
+  /** callback for our alarm */
+  grpc_closure on_alarm;
+
   /** pollset_set tracking who's interested in a connection
       being setup */
   grpc_pollset_set *pollset_set;
@@ -206,9 +210,9 @@ static void subchannel_destroy(grpc_exec_ctx *exec_ctx, void *arg,
                                grpc_error *error) {
   grpc_subchannel *c = arg;
   gpr_free((void *)c->filters);
-  grpc_channel_args_destroy(c->args);
+  grpc_channel_args_destroy(exec_ctx, c->args);
   gpr_free(c->addr);
-  grpc_slice_unref(c->initial_connect_string);
+  grpc_slice_unref_internal(exec_ctx, c->initial_connect_string);
   grpc_connectivity_state_destroy(exec_ctx, &c->state_tracker);
   grpc_connector_unref(exec_ctx, c->connector);
   grpc_pollset_set_destroy(c->pollset_set);
@@ -293,8 +297,9 @@ void grpc_subchannel_weak_unref(grpc_exec_ctx *exec_ctx,
   gpr_atm old_refs;
   old_refs = ref_mutate(c, -(gpr_atm)1, 1 REF_MUTATE_PURPOSE("WEAK_UNREF"));
   if (old_refs == 1) {
-    grpc_exec_ctx_sched(exec_ctx, grpc_closure_create(subchannel_destroy, c),
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, grpc_closure_create(subchannel_destroy, c,
+                                                     grpc_schedule_on_exec_ctx),
+                       GRPC_ERROR_NONE);
   }
 }
 
@@ -330,7 +335,8 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
   c->args = grpc_channel_args_copy(args->args);
   c->root_external_state_watcher.next = c->root_external_state_watcher.prev =
       &c->root_external_state_watcher;
-  grpc_closure_init(&c->connected, subchannel_connected, c);
+  grpc_closure_init(&c->connected, subchannel_connected, c,
+                    grpc_schedule_on_exec_ctx);
   grpc_connectivity_state_init(&c->state_tracker, GRPC_CHANNEL_IDLE,
                                "subchannel");
   int initial_backoff_ms =
@@ -480,7 +486,8 @@ static void maybe_start_connecting_locked(grpc_exec_ctx *exec_ctx,
       gpr_log(GPR_INFO, "Retry in %" PRId64 ".%09d seconds",
               time_til_next.tv_sec, time_til_next.tv_nsec);
     }
-    grpc_timer_init(exec_ctx, &c->alarm, c->next_attempt, on_alarm, c, now);
+    grpc_closure_init(&c->on_alarm, on_alarm, c, grpc_schedule_on_exec_ctx);
+    grpc_timer_init(exec_ctx, &c->alarm, c->next_attempt, &c->on_alarm, now);
   }
 }
 
@@ -505,7 +512,8 @@ void grpc_subchannel_notify_on_state_change(
     w->subchannel = c;
     w->pollset_set = interested_parties;
     w->notify = notify;
-    grpc_closure_init(&w->closure, on_external_state_watcher_done, w);
+    grpc_closure_init(&w->closure, on_external_state_watcher_done, w,
+                      grpc_schedule_on_exec_ctx);
     if (interested_parties != NULL) {
       grpc_pollset_set_add_pollset_set(exec_ctx, c->pollset_set,
                                        interested_parties);
@@ -600,18 +608,24 @@ static void publish_transport_locked(grpc_exec_ctx *exec_ctx,
   /* construct channel stack */
   grpc_channel_stack_builder *builder = grpc_channel_stack_builder_create();
   grpc_channel_stack_builder_set_channel_arguments(
-      builder, c->connecting_result.channel_args);
+      exec_ctx, builder, c->connecting_result.channel_args);
   grpc_channel_stack_builder_set_transport(builder,
                                            c->connecting_result.transport);
 
-  if (grpc_channel_init_create_stack(exec_ctx, builder,
-                                     GRPC_CLIENT_SUBCHANNEL)) {
-    con = grpc_channel_stack_builder_finish(exec_ctx, builder, 0, 1,
-                                            connection_destroy, NULL);
-  } else {
-    grpc_channel_stack_builder_destroy(builder);
+  if (!grpc_channel_init_create_stack(exec_ctx, builder,
+                                      GRPC_CLIENT_SUBCHANNEL)) {
+    grpc_channel_stack_builder_destroy(exec_ctx, builder);
     abort(); /* TODO(ctiller): what to do here (previously we just crashed) */
   }
+  grpc_error *error = grpc_channel_stack_builder_finish(
+      exec_ctx, builder, 0, 1, connection_destroy, NULL, (void **)&con);
+  if (error != GRPC_ERROR_NONE) {
+    const char *msg = grpc_error_string(error);
+    gpr_log(GPR_ERROR, "error initializing subchannel stack: %s", msg);
+    grpc_error_free_string(msg);
+    GRPC_ERROR_UNREF(error);
+    abort(); /* TODO(ctiller): what to do here? */
+  }
   stk = CHANNEL_STACK_FROM_CONNECTION(con);
   memset(&c->connecting_result, 0, sizeof(c->connecting_result));
 
@@ -620,7 +634,7 @@ static void publish_transport_locked(grpc_exec_ctx *exec_ctx,
   sw_subchannel->subchannel = c;
   sw_subchannel->connectivity_state = GRPC_CHANNEL_READY;
   grpc_closure_init(&sw_subchannel->closure, subchannel_on_child_state_changed,
-                    sw_subchannel);
+                    sw_subchannel, grpc_schedule_on_exec_ctx);
 
   if (c->disconnected) {
     gpr_free(sw_subchannel);
@@ -680,7 +694,7 @@ static void subchannel_connected(grpc_exec_ctx *exec_ctx, void *arg,
   }
   gpr_mu_unlock(&c->mu);
   GRPC_SUBCHANNEL_WEAK_UNREF(exec_ctx, c, "connected");
-  grpc_channel_args_destroy(delete_channel_args);
+  grpc_channel_args_destroy(exec_ctx, delete_channel_args);
 }
 
 /*

src/core/ext/client_channel/subchannel.h

@@ -164,8 +164,6 @@ struct grpc_subchannel_args {
   size_t filter_count;
   /** Channel arguments to be supplied to the newly created channel */
   const grpc_channel_args *args;
-  /** Server name */
-  const char *server_name;
   /** Address to connect to */
   grpc_resolved_address *addr;
 };

src/core/ext/client_channel/subchannel_index.c

@@ -86,7 +86,6 @@ static grpc_subchannel_key *create_key(
   } else {
     k->args.filters = NULL;
   }
-  k->args.server_name = gpr_strdup(args->server_name);
   k->args.addr = gpr_malloc(sizeof(grpc_resolved_address));
   k->args.addr->len = args->addr->len;
   if (k->args.addr->len > 0) {
@@ -113,8 +112,6 @@ static int subchannel_key_compare(grpc_subchannel_key *a,
   if (c != 0) return c;
   c = GPR_ICMP(a->args.filter_count, b->args.filter_count);
   if (c != 0) return c;
-  c = strcmp(a->args.server_name, b->args.server_name);
-  if (c != 0) return c;
   if (a->args.addr->len) {
     c = memcmp(a->args.addr->addr, b->args.addr->addr, a->args.addr->len);
     if (c != 0) return c;
@@ -131,8 +128,7 @@ void grpc_subchannel_key_destroy(grpc_exec_ctx *exec_ctx,
                                  grpc_subchannel_key *k) {
   grpc_connector_unref(exec_ctx, k->connector);
   gpr_free((grpc_channel_args *)k->args.filters);
-  grpc_channel_args_destroy((grpc_channel_args *)k->args.args);
-  gpr_free((void *)k->args.server_name);
+  grpc_channel_args_destroy(exec_ctx, (grpc_channel_args *)k->args.args);
   gpr_free(k->args.addr);
   gpr_free(k);
 }

src/core/ext/client_channel/uri_parser.c

@@ -42,7 +42,6 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 /** a size_t default value... maps to all 1's */
@@ -138,7 +137,6 @@ static int parse_fragment_or_query(const char *uri_text, size_t *i) {
   return 1;
 }
 
-static void do_nothing(void *ignored) {}
 static void parse_query_parts(grpc_uri *uri) {
   static const char *QUERY_PARTS_SEPARATOR = "&";
   static const char *QUERY_PARTS_VALUE_SEPARATOR = "=";
@@ -149,38 +147,32 @@ static void parse_query_parts(grpc_uri *uri) {
     uri->num_query_parts = 0;
     return;
   }
-  grpc_slice query_slice =
-      grpc_slice_new(uri->query, strlen(uri->query), do_nothing);
-  grpc_slice_buffer query_parts; /* the &-separated elements of the query */
-  grpc_slice_buffer query_param_parts; /* the =-separated subelements */
 
-  grpc_slice_buffer_init(&query_parts);
-  grpc_slice_buffer_init(&query_param_parts);
-
-  grpc_slice_split(query_slice, QUERY_PARTS_SEPARATOR, &query_parts);
-  uri->query_parts = gpr_malloc(query_parts.count * sizeof(char *));
-  uri->query_parts_values = gpr_malloc(query_parts.count * sizeof(char *));
-  uri->num_query_parts = query_parts.count;
-  for (size_t i = 0; i < query_parts.count; i++) {
-    grpc_slice_split(query_parts.slices[i], QUERY_PARTS_VALUE_SEPARATOR,
-                     &query_param_parts);
-    GPR_ASSERT(query_param_parts.count > 0);
-    uri->query_parts[i] =
-        grpc_dump_slice(query_param_parts.slices[0], GPR_DUMP_ASCII);
-    if (query_param_parts.count > 1) {
+  gpr_string_split(uri->query, QUERY_PARTS_SEPARATOR, &uri->query_parts,
+                   &uri->num_query_parts);
+  uri->query_parts_values = gpr_malloc(uri->num_query_parts * sizeof(char **));
+  for (size_t i = 0; i < uri->num_query_parts; i++) {
+    char **query_param_parts;
+    size_t num_query_param_parts;
+    char *full = uri->query_parts[i];
+    gpr_string_split(full, QUERY_PARTS_VALUE_SEPARATOR, &query_param_parts,
+                     &num_query_param_parts);
+    GPR_ASSERT(num_query_param_parts > 0);
+    uri->query_parts[i] = query_param_parts[0];
+    if (num_query_param_parts > 1) {
       /* TODO(dgq): only the first value after the separator is considered.
        * Perhaps all chars after the first separator for the query part should
        * be included, even if they include the separator. */
-      uri->query_parts_values[i] =
-          grpc_dump_slice(query_param_parts.slices[1], GPR_DUMP_ASCII);
+      uri->query_parts_values[i] = query_param_parts[1];
     } else {
       uri->query_parts_values[i] = NULL;
     }
-    grpc_slice_buffer_reset_and_unref(&query_param_parts);
+    for (size_t j = 2; j < num_query_param_parts; j++) {
+      gpr_free(query_param_parts[j]);
+    }
+    gpr_free(query_param_parts);
+    gpr_free(full);
   }
-  grpc_slice_buffer_destroy(&query_parts);
-  grpc_slice_buffer_destroy(&query_param_parts);
-  grpc_slice_unref(query_slice);
 }
 
 grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) {

src/core/ext/lb_policy/grpclb/grpclb.c

@@ -106,6 +106,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
+#include "src/core/ext/client_channel/client_channel.h"
 #include "src/core/ext/client_channel/client_channel_factory.h"
 #include "src/core/ext/client_channel/lb_policy_factory.h"
 #include "src/core/ext/client_channel/lb_policy_registry.h"
@@ -116,6 +117,7 @@
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/backoff.h"
 #include "src/core/lib/support/string.h"
@@ -179,8 +181,7 @@ static void wrapped_rr_closure(grpc_exec_ctx *exec_ctx, void *arg,
   wrapped_rr_closure_arg *wc_arg = arg;
 
   GPR_ASSERT(wc_arg->wrapped_closure != NULL);
-  grpc_exec_ctx_sched(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error),
-                      NULL);
+  grpc_closure_sched(exec_ctx, wc_arg->wrapped_closure, GRPC_ERROR_REF(error));
 
   if (wc_arg->rr_policy != NULL) {
     /* if *target is NULL, no pick has been made by the RR policy (eg, all
@@ -247,7 +248,8 @@ static void add_pending_pick(pending_pick **root,
       pick_args->lb_token_mdelem_storage;
   pp->wrapped_on_complete_arg.free_when_done = pp;
   grpc_closure_init(&pp->wrapped_on_complete_arg.wrapper_closure,
-                    wrapped_rr_closure, &pp->wrapped_on_complete_arg);
+                    wrapped_rr_closure, &pp->wrapped_on_complete_arg,
+                    grpc_schedule_on_exec_ctx);
   *root = pp;
 }
 
@@ -267,7 +269,8 @@ static void add_pending_ping(pending_ping **root, grpc_closure *notify) {
   pping->wrapped_notify_arg.free_when_done = pping;
   pping->next = *root;
   grpc_closure_init(&pping->wrapped_notify_arg.wrapper_closure,
-                    wrapped_rr_closure, &pping->wrapped_notify_arg);
+                    wrapped_rr_closure, &pping->wrapped_notify_arg,
+                    grpc_schedule_on_exec_ctx);
   *root = pping;
 }
 
@@ -324,6 +327,9 @@ typedef struct glb_lb_policy {
   /* A response from the LB server has been received. Process it */
   grpc_closure lb_on_response_received;
 
+  /* LB call retry timer callback. */
+  grpc_closure lb_on_call_retry;
+
   grpc_call *lb_call; /* streaming call to the LB server, */
 
   grpc_metadata_array lb_initial_metadata_recv; /* initial MD from LB server */
@@ -384,8 +390,8 @@ static bool is_server_valid(const grpc_grpclb_server *server, size_t idx,
 static void *lb_token_copy(void *token) {
   return token == NULL ? NULL : GRPC_MDELEM_REF(token);
 }
-static void lb_token_destroy(void *token) {
-  if (token != NULL) GRPC_MDELEM_UNREF(token);
+static void lb_token_destroy(grpc_exec_ctx *exec_ctx, void *token) {
+  if (token != NULL) GRPC_MDELEM_UNREF(exec_ctx, token);
 }
 static int lb_token_cmp(void *token1, void *token2) {
   if (token1 > token2) return 1;
@@ -419,7 +425,7 @@ static void parse_server(const grpc_grpclb_server *server,
 
 /* Returns addresses extracted from \a serverlist. */
 static grpc_lb_addresses *process_serverlist_locked(
-    const grpc_grpclb_serverlist *serverlist) {
+    grpc_exec_ctx *exec_ctx, const grpc_grpclb_serverlist *serverlist) {
   size_t num_valid = 0;
   /* first pass: count how many are valid in order to allocate the necessary
    * memory in a single block */
@@ -455,8 +461,8 @@ static grpc_lb_addresses *process_serverlist_locked(
           strnlen(server->load_balance_token, lb_token_max_length);
       grpc_mdstr *lb_token_mdstr = grpc_mdstr_from_buffer(
           (uint8_t *)server->load_balance_token, lb_token_length);
-      user_data = grpc_mdelem_from_metadata_strings(GRPC_MDSTR_LB_TOKEN,
-                                                    lb_token_mdstr);
+      user_data = grpc_mdelem_from_metadata_strings(
+          exec_ctx, GRPC_MDSTR_LB_TOKEN, lb_token_mdstr);
     } else {
       char *uri = grpc_sockaddr_to_uri(&addr);
       gpr_log(GPR_INFO,
@@ -579,7 +585,8 @@ static grpc_lb_policy *create_rr_locked(
   grpc_lb_policy_args args;
   memset(&args, 0, sizeof(args));
   args.client_channel_factory = glb_policy->cc_factory;
-  grpc_lb_addresses *addresses = process_serverlist_locked(serverlist);
+  grpc_lb_addresses *addresses =
+      process_serverlist_locked(exec_ctx, serverlist);
 
   // Replace the LB addresses in the channel args that we pass down to
   // the subchannel.
@@ -591,8 +598,8 @@ static grpc_lb_policy *create_rr_locked(
 
   grpc_lb_policy *rr = grpc_lb_policy_create(exec_ctx, "round_robin", &args);
   GPR_ASSERT(rr != NULL);
-  grpc_lb_addresses_destroy(addresses);
-  grpc_channel_args_destroy(args.args);
+  grpc_lb_addresses_destroy(exec_ctx, addresses);
+  grpc_channel_args_destroy(exec_ctx, args.args);
   return rr;
 }
 
@@ -666,7 +673,7 @@ static void rr_handover_locked(grpc_exec_ctx *exec_ctx,
       gpr_malloc(sizeof(rr_connectivity_data));
   memset(rr_connectivity, 0, sizeof(rr_connectivity_data));
   grpc_closure_init(&rr_connectivity->on_change, glb_rr_connectivity_changed,
-                    rr_connectivity);
+                    rr_connectivity, grpc_schedule_on_exec_ctx);
   rr_connectivity->glb_policy = glb_policy;
   rr_connectivity->state = new_rr_state;
 
@@ -743,12 +750,6 @@ static void glb_rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
 static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
                                   grpc_lb_policy_factory *factory,
                                   grpc_lb_policy_args *args) {
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Count the number of gRPC-LB addresses. There must be at least one.
    * TODO(roth): For now, we ignore non-balancer addresses, but in the
    * future, we may change the behavior such that we fall back to using
@@ -756,7 +757,8 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
    * time, this should be changed to allow a list with no balancer addresses,
    * since the resolver might fail to return a balancer address even when
    * this is the right LB policy to use. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_grpclb_addrs = 0;
@@ -768,13 +770,25 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
   glb_lb_policy *glb_policy = gpr_malloc(sizeof(*glb_policy));
   memset(glb_policy, 0, sizeof(*glb_policy));
 
+  /* Get server name. */
+  arg = grpc_channel_args_find(args->args, GRPC_ARG_SERVER_URI);
+  GPR_ASSERT(arg != NULL);
+  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  grpc_uri *uri = grpc_uri_parse(arg->value.string, true);
+  GPR_ASSERT(uri->path[0] != '\0');
+  glb_policy->server_name =
+      gpr_strdup(uri->path[0] == '/' ? uri->path + 1 : uri->path);
+  if (grpc_lb_glb_trace) {
+    gpr_log(GPR_INFO, "Will use '%s' as the server name for LB request.",
+            glb_policy->server_name);
+  }
+  grpc_uri_destroy(uri);
+
   /* All input addresses in addresses come from a resolver that claims
    * they are LB services. It's the resolver's responsibility to make sure
-   * this
-   * policy is only instantiated and used in that case.
+   * this policy is only instantiated and used in that case.
    *
    * Create a client channel over them to communicate with a LB service */
-  glb_policy->server_name = gpr_strdup(server_name);
   glb_policy->cc_factory = args->client_channel_factory;
   glb_policy->args = grpc_channel_args_copy(args->args);
   GPR_ASSERT(glb_policy->cc_factory != NULL);
@@ -818,15 +832,20 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
    * We need the LB channel to return addresses with is_balancer=false
    * so that it does not wind up recursively using the grpclb LB policy,
    * as per the special case logic in client_channel.c.
+   *
+   * Finally, we also strip out the channel arg for the server URI,
+   * since that will be different for the LB channel than for the parent
+   * channel.  (The client channel factory will re-add this arg with
+   * the right value.)
    */
-  static const char *keys_to_remove[] = {GRPC_ARG_LB_POLICY_NAME,
-                                         GRPC_ARG_LB_ADDRESSES};
+  static const char *keys_to_remove[] = {
+      GRPC_ARG_LB_POLICY_NAME, GRPC_ARG_LB_ADDRESSES, GRPC_ARG_SERVER_URI};
   grpc_channel_args *new_args = grpc_channel_args_copy_and_remove(
       args->args, keys_to_remove, GPR_ARRAY_SIZE(keys_to_remove));
   glb_policy->lb_channel = grpc_client_channel_factory_create_channel(
       exec_ctx, glb_policy->cc_factory, target_uri_str,
       GRPC_CLIENT_CHANNEL_TYPE_LOAD_BALANCING, new_args);
-  grpc_channel_args_destroy(new_args);
+  grpc_channel_args_destroy(exec_ctx, new_args);
 
   gpr_free(target_uri_str);
   for (size_t i = 0; i < num_grpclb_addrs; i++) {
@@ -852,7 +871,7 @@ static void glb_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   GPR_ASSERT(glb_policy->pending_picks == NULL);
   GPR_ASSERT(glb_policy->pending_pings == NULL);
   gpr_free((void *)glb_policy->server_name);
-  grpc_channel_args_destroy(glb_policy->args);
+  grpc_channel_args_destroy(exec_ctx, glb_policy->args);
   grpc_channel_destroy(glb_policy->lb_channel);
   glb_policy->lb_channel = NULL;
   grpc_connectivity_state_destroy(exec_ctx, &glb_policy->state_tracker);
@@ -895,15 +914,15 @@ static void glb_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
+                       GRPC_ERROR_NONE);
     pp = next;
   }
 
   while (pping != NULL) {
     pending_ping *next = pping->next;
-    grpc_exec_ctx_sched(exec_ctx, &pping->wrapped_notify_arg.wrapper_closure,
-                        GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, &pping->wrapped_notify_arg.wrapper_closure,
+                       GRPC_ERROR_NONE);
     pping = next;
   }
 }
@@ -919,9 +938,9 @@ static void glb_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
     } else {
       pp->next = glb_policy->pending_picks;
       glb_policy->pending_picks = pp;
@@ -944,9 +963,9 @@ static void glb_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if ((pp->pick_args.initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, &pp->wrapped_on_complete_arg.wrapper_closure,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
     } else {
       pp->next = glb_policy->pending_picks;
       glb_policy->pending_picks = pp;
@@ -981,11 +1000,10 @@ static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
                     grpc_closure *on_complete) {
   if (pick_args->lb_token_mdelem_storage == NULL) {
     *target = NULL;
-    grpc_exec_ctx_sched(
+    grpc_closure_sched(
         exec_ctx, on_complete,
         GRPC_ERROR_CREATE("No mdelem storage for the LB token. Load reporting "
-                          "won't work without it. Failing"),
-        NULL);
+                          "won't work without it. Failing"));
     return 0;
   }
 
@@ -1004,7 +1022,8 @@ static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     wrapped_rr_closure_arg *wc_arg = gpr_malloc(sizeof(wrapped_rr_closure_arg));
     memset(wc_arg, 0, sizeof(wrapped_rr_closure_arg));
 
-    grpc_closure_init(&wc_arg->wrapper_closure, wrapped_rr_closure, wc_arg);
+    grpc_closure_init(&wc_arg->wrapper_closure, wrapped_rr_closure, wc_arg,
+                      grpc_schedule_on_exec_ctx);
     wc_arg->rr_policy = glb_policy->rr_policy;
     wc_arg->target = target;
     wc_arg->wrapped_closure = on_complete;
@@ -1075,7 +1094,8 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error);
 static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error);
-static void lb_call_init_locked(glb_lb_policy *glb_policy) {
+static void lb_call_init_locked(grpc_exec_ctx *exec_ctx,
+                                glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->server_name != NULL);
   GPR_ASSERT(glb_policy->server_name[0] != '\0');
   GPR_ASSERT(!glb_policy->shutting_down);
@@ -1084,7 +1104,7 @@ static void lb_call_init_locked(glb_lb_policy *glb_policy) {
    * glb_policy->base.interested_parties, which is comprised of the polling
    * entities from \a client_channel. */
   glb_policy->lb_call = grpc_channel_create_pollset_set_call(
-      glb_policy->lb_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
+      exec_ctx, glb_policy->lb_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
       glb_policy->base.interested_parties,
       "/grpc.lb.v1.LoadBalancer/BalanceLoad", glb_policy->server_name,
       glb_policy->deadline, NULL);
@@ -1097,16 +1117,18 @@ static void lb_call_init_locked(glb_lb_policy *glb_policy) {
   grpc_slice request_payload_slice = grpc_grpclb_request_encode(request);
   glb_policy->lb_request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  grpc_slice_unref(request_payload_slice);
+  grpc_slice_unref_internal(exec_ctx, request_payload_slice);
   grpc_grpclb_request_destroy(request);
 
   glb_policy->lb_call_status_details = NULL;
   glb_policy->lb_call_status_details_capacity = 0;
 
   grpc_closure_init(&glb_policy->lb_on_server_status_received,
-                    lb_on_server_status_received, glb_policy);
+                    lb_on_server_status_received, glb_policy,
+                    grpc_schedule_on_exec_ctx);
   grpc_closure_init(&glb_policy->lb_on_response_received,
-                    lb_on_response_received, glb_policy);
+                    lb_on_response_received, glb_policy,
+                    grpc_schedule_on_exec_ctx);
 
   gpr_backoff_init(&glb_policy->lb_call_backoff_state,
                    GRPC_GRPCLB_INITIAL_CONNECT_BACKOFF_SECONDS,
@@ -1136,7 +1158,7 @@ static void query_for_backends_locked(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(glb_policy->lb_channel != NULL);
   if (glb_policy->shutting_down) return;
 
-  lb_call_init_locked(glb_policy);
+  lb_call_init_locked(exec_ctx, glb_policy);
 
   if (grpc_lb_glb_trace) {
     gpr_log(GPR_INFO, "Query for backends (grpclb: %p, lb_call: %p)",
@@ -1221,7 +1243,7 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
         grpc_grpclb_response_parse_serverlist(response_slice);
     if (serverlist != NULL) {
       GPR_ASSERT(glb_policy->lb_call != NULL);
-      grpc_slice_unref(response_slice);
+      grpc_slice_unref_internal(exec_ctx, response_slice);
       if (grpc_lb_glb_trace) {
         gpr_log(GPR_INFO, "Serverlist with %lu servers received",
                 (unsigned long)serverlist->num_servers);
@@ -1265,7 +1287,7 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
     } else { /* serverlist == NULL */
       gpr_log(GPR_ERROR, "Invalid LB response received: '%s'. Ignoring.",
               grpc_dump_slice(response_slice, GPR_DUMP_ASCII | GPR_DUMP_HEX));
-      grpc_slice_unref(response_slice);
+      grpc_slice_unref_internal(exec_ctx, response_slice);
     }
 
     if (!glb_policy->shutting_down) {
@@ -1345,8 +1367,10 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
       }
     }
     GRPC_LB_POLICY_WEAK_REF(&glb_policy->base, "grpclb_retry_timer");
+    grpc_closure_init(&glb_policy->lb_on_call_retry, lb_call_on_retry_timer,
+                      glb_policy, grpc_schedule_on_exec_ctx);
     grpc_timer_init(exec_ctx, &glb_policy->lb_call_retry_timer, next_try,
-                    lb_call_on_retry_timer, glb_policy, now);
+                    &glb_policy->lb_on_call_retry, now);
   }
   gpr_mu_unlock(&glb_policy->mu);
   GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,

src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c

@@ -1,35 +1,3 @@
-/*
- *
- * Copyright 2016, 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.
- *
- */
 /* Automatically generated nanopb constant definitions */
 /* Generated by nanopb-0.3.7-dev */
 

src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h

@@ -1,35 +1,3 @@
-/*
- *
- * Copyright 2016, 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.
- *
- */
 /* Automatically generated nanopb header */
 /* Generated by nanopb-0.3.7-dev */
 

src/core/ext/lb_policy/pick_first/pick_first.c

@@ -120,7 +120,7 @@ static void pf_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
     gpr_free(pp);
     pp = next;
   }
@@ -138,9 +138,9 @@ static void pf_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -165,9 +165,9 @@ static void pf_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if ((pp->initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick Cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -306,14 +306,15 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
         /* drop the pick list: we are connected now */
         GRPC_LB_POLICY_WEAK_REF(&p->base, "destroy_subchannels");
         gpr_atm_rel_store(&p->selected, (gpr_atm)selected);
-        grpc_exec_ctx_sched(exec_ctx,
-                            grpc_closure_create(destroy_subchannels, p),
-                            GRPC_ERROR_NONE, NULL);
+        grpc_closure_sched(exec_ctx,
+                           grpc_closure_create(destroy_subchannels, p,
+                                               grpc_schedule_on_exec_ctx),
+                           GRPC_ERROR_NONE);
         /* update any calls that were waiting for a pick */
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
           *pp->target = GRPC_CONNECTED_SUBCHANNEL_REF(selected, "picked");
-          grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+          grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
           gpr_free(pp);
         }
         grpc_connected_subchannel_notify_on_state_change(
@@ -366,8 +367,7 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
           while ((pp = p->pending_picks)) {
             p->pending_picks = pp->next;
             *pp->target = NULL;
-            grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE,
-                                NULL);
+            grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
             gpr_free(pp);
           }
           GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base,
@@ -419,8 +419,7 @@ static void pf_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   if (selected) {
     grpc_connected_subchannel_ping(exec_ctx, selected, closure);
   } else {
-    grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_CREATE("Not connected"),
-                        NULL);
+    grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CREATE("Not connected"));
   }
 }
 
@@ -438,15 +437,10 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
                                          grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
 
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Find the number of backend addresses. We ignore balancer
    * addresses, since we don't know how to handle them. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
@@ -472,9 +466,6 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
     }
 
     memset(&sc_args, 0, sizeof(grpc_subchannel_args));
-    /* server_name will be copied as part of the subchannel creation. This makes
-     * the copying of server_name (a borrowed pointer) OK. */
-    sc_args.server_name = server_name;
     sc_args.addr = &addresses->addresses[i].address;
     sc_args.args = args->args;
 
@@ -493,7 +484,8 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
   p->num_subchannels = subchannel_idx;
 
   grpc_lb_policy_init(&p->base, &pick_first_lb_policy_vtable);
-  grpc_closure_init(&p->connectivity_changed, pf_connectivity_changed, p);
+  grpc_closure_init(&p->connectivity_changed, pf_connectivity_changed, p,
+                    grpc_schedule_on_exec_ctx);
   gpr_mu_init(&p->mu);
   return &p->base;
 }

src/core/ext/lb_policy/round_robin/round_robin.c

@@ -284,7 +284,7 @@ static void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
     GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "rr_destroy");
     if (sd->user_data != NULL) {
       GPR_ASSERT(sd->user_data_vtable != NULL);
-      sd->user_data_vtable->destroy(sd->user_data);
+      sd->user_data_vtable->destroy(exec_ctx, sd->user_data);
     }
     gpr_free(sd);
   }
@@ -321,8 +321,8 @@ static void rr_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   while ((pp = p->pending_picks)) {
     p->pending_picks = pp->next;
     *pp->target = NULL;
-    grpc_exec_ctx_sched(exec_ctx, pp->on_complete,
-                        GRPC_ERROR_CREATE("Channel Shutdown"), NULL);
+    grpc_closure_sched(exec_ctx, pp->on_complete,
+                       GRPC_ERROR_CREATE("Channel Shutdown"));
     gpr_free(pp);
   }
   grpc_connectivity_state_set(
@@ -348,9 +348,9 @@ static void rr_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     pending_pick *next = pp->next;
     if (pp->target == target) {
       *target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -376,9 +376,9 @@ static void rr_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     if ((pp->initial_metadata_flags & initial_metadata_flags_mask) ==
         initial_metadata_flags_eq) {
       *pp->target = NULL;
-      grpc_exec_ctx_sched(
+      grpc_closure_sched(
           exec_ctx, pp->on_complete,
-          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1), NULL);
+          GRPC_ERROR_CREATE_REFERENCING("Pick cancelled", &error, 1));
       gpr_free(pp);
     } else {
       pp->next = p->pending_picks;
@@ -581,7 +581,7 @@ static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
                   "[RR CONN CHANGED] TARGET <-- SUBCHANNEL %p (NODE %p)",
                   (void *)selected->subchannel, (void *)selected);
         }
-        grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+        grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
         gpr_free(pp);
       }
       update_lb_connectivity_status(exec_ctx, sd, error);
@@ -634,7 +634,7 @@ static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
           *pp->target = NULL;
-          grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+          grpc_closure_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE);
           gpr_free(pp);
         }
       }
@@ -684,8 +684,8 @@ static void rr_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, target, "rr_picked");
   } else {
     gpr_mu_unlock(&p->mu);
-    grpc_exec_ctx_sched(exec_ctx, closure,
-                        GRPC_ERROR_CREATE("Round Robin not connected"), NULL);
+    grpc_closure_sched(exec_ctx, closure,
+                       GRPC_ERROR_CREATE("Round Robin not connected"));
   }
 }
 
@@ -703,15 +703,10 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
                                           grpc_lb_policy_args *args) {
   GPR_ASSERT(args->client_channel_factory != NULL);
 
-  /* Get server name. */
-  const grpc_arg *arg =
-      grpc_channel_args_find(args->args, GRPC_ARG_SERVER_NAME);
-  const char *server_name =
-      arg != NULL && arg->type == GRPC_ARG_STRING ? arg->value.string : NULL;
-
   /* Find the number of backend addresses. We ignore balancer
    * addresses, since we don't know how to handle them. */
-  arg = grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
+  const grpc_arg *arg =
+      grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
   GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
@@ -734,9 +729,6 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
     if (addresses->addresses[i].is_balancer) continue;
 
     memset(&sc_args, 0, sizeof(grpc_subchannel_args));
-    /* server_name will be copied as part of the subchannel creation. This makes
-     * the copying of server_name (a borrowed pointer) OK. */
-    sc_args.server_name = server_name;
     sc_args.addr = &addresses->addresses[i].address;
     sc_args.args = args->args;
 
@@ -757,7 +749,7 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
       }
       ++subchannel_idx;
       grpc_closure_init(&sd->connectivity_changed_closure,
-                        rr_connectivity_changed, sd);
+                        rr_connectivity_changed, sd, grpc_schedule_on_exec_ctx);
     }
   }
   if (subchannel_idx == 0) {

src/core/ext/load_reporting/load_reporting.c

@@ -53,7 +53,8 @@ static bool is_load_reporting_enabled(const grpc_channel_args *a) {
   return false;
 }
 
-static bool maybe_add_load_reporting_filter(grpc_channel_stack_builder *builder,
+static bool maybe_add_load_reporting_filter(grpc_exec_ctx *exec_ctx,
+                                            grpc_channel_stack_builder *builder,
                                             void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);

src/core/ext/load_reporting/load_reporting_filter.c

@@ -68,7 +68,8 @@ typedef struct {
   grpc_exec_ctx *exec_ctx;
 } recv_md_filter_args;
 
-static grpc_mdelem *recv_md_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *recv_md_filter(grpc_exec_ctx *exec_ctx, void *user_data,
+                                   grpc_mdelem *md) {
   recv_md_filter_args *a = user_data;
   grpc_call_element *elem = a->elem;
   call_data *calld = elem->call_data;
@@ -92,8 +93,8 @@ static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data,
     recv_md_filter_args a;
     a.elem = elem;
     a.exec_ctx = exec_ctx;
-    grpc_metadata_batch_filter(calld->recv_initial_metadata, recv_md_filter,
-                               &a);
+    grpc_metadata_batch_filter(exec_ctx, calld->recv_initial_metadata,
+                               recv_md_filter, &a);
     if (calld->service_method == NULL) {
       err =
           grpc_error_add_child(err, GRPC_ERROR_CREATE("Missing :path header"));
@@ -114,7 +115,8 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   memset(calld, 0, sizeof(call_data));
 
   calld->id = (intptr_t)args->call_stack;
-  grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem);
+  grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem,
+                    grpc_schedule_on_exec_ctx);
 
   /* TODO(dgq): do something with the data
   channel_data *chand = elem->channel_data;
@@ -152,9 +154,9 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 }
 
 /* Constructor for channel_data */
-static void init_channel_elem(grpc_exec_ctx *exec_ctx,
-                              grpc_channel_element *elem,
-                              grpc_channel_element_args *args) {
+static grpc_error *init_channel_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_channel_element *elem,
+                                     grpc_channel_element_args *args) {
   GPR_ASSERT(!args->is_last);
 
   channel_data *chand = elem->channel_data;
@@ -171,6 +173,8 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
                                                 NULL,
                                                 NULL};
                                                 */
+
+  return GRPC_ERROR_NONE;
 }
 
 /* Destructor for channel data */
@@ -189,7 +193,8 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
   */
 }
 
-static grpc_mdelem *lr_trailing_md_filter(void *user_data, grpc_mdelem *md) {
+static grpc_mdelem *lr_trailing_md_filter(grpc_exec_ctx *exec_ctx,
+                                          void *user_data, grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
 
@@ -213,7 +218,7 @@ static void lr_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
     calld->ops_recv_initial_metadata_ready = op->recv_initial_metadata_ready;
     op->recv_initial_metadata_ready = &calld->on_initial_md_ready;
   } else if (op->send_trailing_metadata) {
-    grpc_metadata_batch_filter(op->send_trailing_metadata,
+    grpc_metadata_batch_filter(exec_ctx, op->send_trailing_metadata,
                                lr_trailing_md_filter, elem);
   }
   grpc_call_next_op(exec_ctx, elem, op);

src/core/ext/resolver/README.md

@@ -0,0 +1,4 @@
+# Resolver
+
+Implementations of various name resolution schemes.
+See the [naming spec](/doc/naming.md).

src/core/ext/resolver/dns/native/dns_resolver.c

@@ -61,6 +61,8 @@ typedef struct {
   char *default_port;
   /** channel args. */
   grpc_channel_args *channel_args;
+  /** pollset_set to drive the name resolution process */
+  grpc_pollset_set *interested_parties;
 
   /** mutex guarding the rest of the state */
   gpr_mu mu;
@@ -79,6 +81,7 @@ typedef struct {
   /** retry timer */
   bool have_retry_timer;
   grpc_timer retry_timer;
+  grpc_closure on_retry;
   /** retry backoff state */
   gpr_backoff backoff_state;
 
@@ -110,8 +113,8 @@ static void dns_shutdown(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver) {
   }
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion,
-                        GRPC_ERROR_CREATE("Resolver Shutdown"), NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion,
+                       GRPC_ERROR_CREATE("Resolver Shutdown"));
     r->next_completion = NULL;
   }
   gpr_mu_unlock(&r->mu);
@@ -180,13 +183,13 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_arg new_arg = grpc_lb_addresses_create_channel_arg(addresses);
     result = grpc_channel_args_copy_and_add(r->channel_args, &new_arg, 1);
     grpc_resolved_addresses_destroy(r->addresses);
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
   } else {
     gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
     gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now);
     gpr_timespec timeout = gpr_time_sub(next_try, now);
     const char *msg = grpc_error_string(error);
-    gpr_log(GPR_DEBUG, "dns resolution failed: %s", msg);
+    gpr_log(GPR_INFO, "dns resolution failed (will retry): %s", msg);
     grpc_error_free_string(msg);
     GPR_ASSERT(!r->have_retry_timer);
     r->have_retry_timer = true;
@@ -197,11 +200,12 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
     } else {
       gpr_log(GPR_DEBUG, "retrying immediately");
     }
-    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r,
-                    now);
+    grpc_closure_init(&r->on_retry, dns_on_retry_timer, r,
+                      grpc_schedule_on_exec_ctx);
+    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, &r->on_retry, now);
   }
   if (r->resolved_result != NULL) {
-    grpc_channel_args_destroy(r->resolved_result);
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
   }
   r->resolved_result = result;
   r->resolved_version++;
@@ -217,8 +221,10 @@ static void dns_start_resolving_locked(grpc_exec_ctx *exec_ctx,
   GPR_ASSERT(!r->resolving);
   r->resolving = true;
   r->addresses = NULL;
-  grpc_resolve_address(exec_ctx, r->name_to_resolve, r->default_port,
-                       grpc_closure_create(dns_on_resolved, r), &r->addresses);
+  grpc_resolve_address(
+      exec_ctx, r->name_to_resolve, r->default_port, r->interested_parties,
+      grpc_closure_create(dns_on_resolved, r, grpc_schedule_on_exec_ctx),
+      &r->addresses);
 }
 
 static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
@@ -228,7 +234,7 @@ static void dns_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
     *r->target_result = r->resolved_result == NULL
                             ? NULL
                             : grpc_channel_args_copy(r->resolved_result);
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
     r->published_version = r->resolved_version;
   }
@@ -238,15 +244,17 @@ static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   dns_resolver *r = (dns_resolver *)gr;
   gpr_mu_destroy(&r->mu);
   if (r->resolved_result != NULL) {
-    grpc_channel_args_destroy(r->resolved_result);
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
   }
+  grpc_pollset_set_destroy(r->interested_parties);
   gpr_free(r->name_to_resolve);
   gpr_free(r->default_port);
-  grpc_channel_args_destroy(r->channel_args);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
   gpr_free(r);
 }
 
-static grpc_resolver *dns_create(grpc_resolver_args *args,
+static grpc_resolver *dns_create(grpc_exec_ctx *exec_ctx,
+                                 grpc_resolver_args *args,
                                  const char *default_port) {
   if (0 != strcmp(args->uri->authority, "")) {
     gpr_log(GPR_ERROR, "authority based dns uri's not supported");
@@ -264,12 +272,12 @@ static grpc_resolver *dns_create(grpc_resolver_args *args,
   grpc_resolver_init(&r->base, &dns_resolver_vtable);
   r->name_to_resolve = proxy_name == NULL ? gpr_strdup(path) : proxy_name;
   r->default_port = gpr_strdup(default_port);
-  grpc_arg server_name_arg;
-  server_name_arg.type = GRPC_ARG_STRING;
-  server_name_arg.key = GRPC_ARG_SERVER_NAME;
-  server_name_arg.value.string = (char *)path;
-  r->channel_args =
-      grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
+  r->channel_args = grpc_channel_args_copy(args->args);
+  r->interested_parties = grpc_pollset_set_create();
+  if (args->pollset_set != NULL) {
+    grpc_pollset_set_add_pollset_set(exec_ctx, r->interested_parties,
+                                     args->pollset_set);
+  }
   gpr_backoff_init(&r->backoff_state, GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS,
                    GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER,
                    GRPC_DNS_RECONNECT_JITTER,
@@ -287,8 +295,9 @@ static void dns_factory_ref(grpc_resolver_factory *factory) {}
 static void dns_factory_unref(grpc_resolver_factory *factory) {}
 
 static grpc_resolver *dns_factory_create_resolver(
-    grpc_resolver_factory *factory, grpc_resolver_args *args) {
-  return dns_create(args, "https");
+    grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,
+    grpc_resolver_args *args) {
+  return dns_create(exec_ctx, args, "https");
 }
 
 static char *dns_factory_get_default_host_name(grpc_resolver_factory *factory,

src/core/ext/resolver/sockaddr/sockaddr_resolver.c

@@ -47,6 +47,7 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -89,7 +90,7 @@ static void sockaddr_shutdown(grpc_exec_ctx *exec_ctx,
   gpr_mu_lock(&r->mu);
   if (r->next_completion != NULL) {
     *r->target_result = NULL;
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
   gpr_mu_unlock(&r->mu);
@@ -123,7 +124,7 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
     grpc_arg arg = grpc_lb_addresses_create_channel_arg(r->addresses);
     *r->target_result =
         grpc_channel_args_copy_and_add(r->channel_args, &arg, 1);
-    grpc_exec_ctx_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE, NULL);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
     r->next_completion = NULL;
   }
 }
@@ -131,8 +132,8 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
 static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   sockaddr_resolver *r = (sockaddr_resolver *)gr;
   gpr_mu_destroy(&r->mu);
-  grpc_lb_addresses_destroy(r->addresses);
-  grpc_channel_args_destroy(r->channel_args);
+  grpc_lb_addresses_destroy(exec_ctx, r->addresses);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
   gpr_free(r);
 }
 
@@ -161,7 +162,8 @@ char *unix_get_default_authority(grpc_resolver_factory *factory,
 
 static void do_nothing(void *ignored) {}
 
-static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
+static grpc_resolver *sockaddr_create(grpc_exec_ctx *exec_ctx,
+                                      grpc_resolver_args *args,
                                       int parse(grpc_uri *uri,
                                                 grpc_resolved_address *dst)) {
   if (0 != strcmp(args->uri->authority, "")) {
@@ -188,22 +190,17 @@ static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
     gpr_free(part_str);
     if (errors_found) break;
   }
-  grpc_slice_buffer_destroy(&path_parts);
-  grpc_slice_unref(path_slice);
+  grpc_slice_buffer_destroy_internal(exec_ctx, &path_parts);
+  grpc_slice_unref_internal(exec_ctx, path_slice);
   if (errors_found) {
-    grpc_lb_addresses_destroy(addresses);
+    grpc_lb_addresses_destroy(exec_ctx, addresses);
     return NULL;
   }
   /* Instantiate resolver. */
   sockaddr_resolver *r = gpr_malloc(sizeof(sockaddr_resolver));
   memset(r, 0, sizeof(*r));
   r->addresses = addresses;
-  grpc_arg server_name_arg;
-  server_name_arg.type = GRPC_ARG_STRING;
-  server_name_arg.key = GRPC_ARG_SERVER_NAME;
-  server_name_arg.value.string = args->uri->path;
-  r->channel_args =
-      grpc_channel_args_copy_and_add(args->args, &server_name_arg, 1);
+  r->channel_args = grpc_channel_args_copy(args->args);
   gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &sockaddr_resolver_vtable);
   return &r->base;
@@ -219,8 +216,9 @@ 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_resolver_args *args) {           \
-    return sockaddr_create(args, parse_##name);                             \
+      grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,              \
+      grpc_resolver_args *args) {                                           \
+    return sockaddr_create(exec_ctx, args, parse_##name);                   \
   }                                                                         \
   static const grpc_resolver_factory_vtable name##_factory_vtable = {       \
       sockaddr_factory_ref, sockaddr_factory_unref,                         \

src/core/ext/transport/README.md

@@ -0,0 +1 @@
+Transports for gRPC

src/core/ext/transport/chttp2/README.md

@@ -0,0 +1 @@
+CHTTP2 - gRPC's implementation of a HTTP2 based transport

src/core/ext/transport/chttp2/client/chttp2_connector.c

@@ -46,8 +46,9 @@
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/iomgr/tcp_client.h"
-#include "src/core/lib/security/transport/security_connector.h"
+#include "src/core/lib/slice/slice_internal.h"
 
 typedef struct {
   grpc_connector base;
@@ -58,10 +59,6 @@ typedef struct {
   bool shutdown;
   bool connecting;
 
-  char *server_name;
-  grpc_chttp2_add_handshakers_func add_handshakers;
-  void *add_handshakers_user_data;
-
   grpc_closure *notify;
   grpc_connect_in_args args;
   grpc_connect_out_args *result;
@@ -89,7 +86,6 @@ static void chttp2_connector_unref(grpc_exec_ctx *exec_ctx,
     // If handshaking is not yet in progress, destroy the endpoint.
     // Otherwise, the handshaker will do this for us.
     if (c->endpoint != NULL) grpc_endpoint_destroy(exec_ctx, c->endpoint);
-    gpr_free(c->server_name);
     gpr_free(c);
   }
 }
@@ -126,8 +122,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
       // point this can be removed.
       grpc_endpoint_shutdown(exec_ctx, args->endpoint);
       grpc_endpoint_destroy(exec_ctx, args->endpoint);
-      grpc_channel_args_destroy(args->args);
-      grpc_slice_buffer_destroy(args->read_buffer);
+      grpc_channel_args_destroy(exec_ctx, args->args);
+      grpc_slice_buffer_destroy_internal(exec_ctx, args->read_buffer);
       gpr_free(args->read_buffer);
     } else {
       error = GRPC_ERROR_REF(error);
@@ -143,7 +139,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
   }
   grpc_closure *notify = c->notify;
   c->notify = NULL;
-  grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+  grpc_closure_sched(exec_ctx, notify, error);
   grpc_handshake_manager_destroy(exec_ctx, c->handshake_mgr);
   c->handshake_mgr = NULL;
   gpr_mu_unlock(&c->mu);
@@ -153,17 +149,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
 static void start_handshake_locked(grpc_exec_ctx *exec_ctx,
                                    chttp2_connector *c) {
   c->handshake_mgr = grpc_handshake_manager_create();
-  char *proxy_name = grpc_get_http_proxy_server();
-  if (proxy_name != NULL) {
-    grpc_handshake_manager_add(
-        c->handshake_mgr,
-        grpc_http_connect_handshaker_create(proxy_name, c->server_name));
-    gpr_free(proxy_name);
-  }
-  if (c->add_handshakers != NULL) {
-    c->add_handshakers(exec_ctx, c->add_handshakers_user_data,
+  grpc_handshakers_add(exec_ctx, HANDSHAKER_CLIENT, c->args.channel_args,
                        c->handshake_mgr);
-  }
   grpc_handshake_manager_do_handshake(
       exec_ctx, c->handshake_mgr, c->endpoint, c->args.channel_args,
       c->args.deadline, NULL /* acceptor */, on_handshake_done, c);
@@ -183,7 +170,7 @@ static void on_initial_connect_string_sent(grpc_exec_ctx *exec_ctx, void *arg,
     memset(c->result, 0, sizeof(*c->result));
     grpc_closure *notify = c->notify;
     c->notify = NULL;
-    grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+    grpc_closure_sched(exec_ctx, notify, error);
     gpr_mu_unlock(&c->mu);
     chttp2_connector_unref(exec_ctx, arg);
   } else {
@@ -206,7 +193,7 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     memset(c->result, 0, sizeof(*c->result));
     grpc_closure *notify = c->notify;
     c->notify = NULL;
-    grpc_exec_ctx_sched(exec_ctx, notify, error, NULL);
+    grpc_closure_sched(exec_ctx, notify, error);
     if (c->endpoint != NULL) grpc_endpoint_shutdown(exec_ctx, c->endpoint);
     gpr_mu_unlock(&c->mu);
     chttp2_connector_unref(exec_ctx, arg);
@@ -214,7 +201,7 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     GPR_ASSERT(c->endpoint != NULL);
     if (!GRPC_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
       grpc_closure_init(&c->initial_string_sent, on_initial_connect_string_sent,
-                        c);
+                        c, grpc_schedule_on_exec_ctx);
       grpc_slice_buffer_init(&c->initial_string_buffer);
       grpc_slice_buffer_add(&c->initial_string_buffer,
                             c->args.initial_connect_string);
@@ -240,7 +227,7 @@ static void chttp2_connector_connect(grpc_exec_ctx *exec_ctx,
   c->result = result;
   GPR_ASSERT(c->endpoint == NULL);
   chttp2_connector_ref(con);  // Ref taken for callback.
-  grpc_closure_init(&c->connected, connected, c);
+  grpc_closure_init(&c->connected, connected, c, grpc_schedule_on_exec_ctx);
   GPR_ASSERT(!c->connecting);
   c->connecting = true;
   grpc_tcp_client_connect(exec_ctx, &c->connected, &c->endpoint,
@@ -253,17 +240,11 @@ static const grpc_connector_vtable chttp2_connector_vtable = {
     chttp2_connector_ref, chttp2_connector_unref, chttp2_connector_shutdown,
     chttp2_connector_connect};
 
-grpc_connector *grpc_chttp2_connector_create(
-    grpc_exec_ctx *exec_ctx, const char *server_name,
-    grpc_chttp2_add_handshakers_func add_handshakers,
-    void *add_handshakers_user_data) {
+grpc_connector *grpc_chttp2_connector_create() {
   chttp2_connector *c = gpr_malloc(sizeof(*c));
   memset(c, 0, sizeof(*c));
   c->base.vtable = &chttp2_connector_vtable;
   gpr_mu_init(&c->mu);
   gpr_ref_init(&c->refs, 1);
-  c->server_name = gpr_strdup(server_name);
-  c->add_handshakers = add_handshakers;
-  c->add_handshakers_user_data = add_handshakers_user_data;
   return &c->base;
 }

src/core/ext/transport/chttp2/client/chttp2_connector.h

@@ -35,18 +35,7 @@
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H
 
 #include "src/core/ext/client_channel/connector.h"
-#include "src/core/lib/channel/handshaker.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
 
-typedef void (*grpc_chttp2_add_handshakers_func)(
-    grpc_exec_ctx* exec_ctx, void* user_data,
-    grpc_handshake_manager* handshake_mgr);
-
-/// If \a add_handshakers is non-NULL, it will be called with
-/// \a add_handshakers_user_data to add handshakers.
-grpc_connector* grpc_chttp2_connector_create(
-    grpc_exec_ctx* exec_ctx, const char* server_name,
-    grpc_chttp2_add_handshakers_func add_handshakers,
-    void* add_handshakers_user_data);
+grpc_connector* grpc_chttp2_connector_create();
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_CLIENT_CHTTP2_CONNECTOR_H */

src/core/ext/transport/chttp2/client/insecure/channel_create.c

@@ -39,8 +39,8 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
-#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
+#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/channel.h"
 
@@ -53,9 +53,7 @@ static void client_channel_factory_unref(
 static grpc_subchannel *client_channel_factory_create_subchannel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const grpc_subchannel_args *args) {
-  grpc_connector *connector = grpc_chttp2_connector_create(
-      exec_ctx, args->server_name, NULL /* add_handshakers */,
-      NULL /* user_data */);
+  grpc_connector *connector = grpc_chttp2_connector_create();
   grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args);
   grpc_connector_unref(exec_ctx, connector);
   return s;
@@ -65,17 +63,15 @@ static grpc_channel *client_channel_factory_create_channel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args) {
-  grpc_channel *channel =
-      grpc_channel_create(exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-  grpc_resolver *resolver = grpc_resolver_create(target, args);
-  if (resolver == NULL) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
-                                "client_channel_factory_create_channel");
-    return NULL;
-  }
-  grpc_client_channel_finish_initialization(
-      exec_ctx, grpc_channel_get_channel_stack(channel), resolver, cc_factory);
-  GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create_channel");
+  // Add channel arg containing the server URI.
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = GRPC_ARG_SERVER_URI;
+  arg.value.string = (char *)target;
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(exec_ctx, new_args);
   return channel;
 }
 
@@ -99,11 +95,16 @@ grpc_channel *grpc_insecure_channel_create(const char *target,
       "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3,
       (target, args, reserved));
   GPR_ASSERT(reserved == NULL);
-  grpc_client_channel_factory *factory =
-      (grpc_client_channel_factory *)&client_channel_factory;
+  // Add channel arg containing the client channel factory.
+  grpc_arg arg =
+      grpc_client_channel_factory_create_channel_arg(&client_channel_factory);
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  // Create channel.
   grpc_channel *channel = client_channel_factory_create_channel(
-      &exec_ctx, factory, target, GRPC_CLIENT_CHANNEL_TYPE_REGULAR, args);
-  grpc_client_channel_factory_unref(&exec_ctx, factory);
+      &exec_ctx, &client_channel_factory, target,
+      GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
+  // Clean up.
+  grpc_channel_args_destroy(&exec_ctx, new_args);
   grpc_exec_ctx_finish(&exec_ctx);
   return channel != NULL ? channel : grpc_lame_client_channel_create(
                                          target, GRPC_STATUS_INTERNAL,

src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c

@@ -74,7 +74,7 @@ grpc_channel *grpc_insecure_channel_create_from_fd(
   GPR_ASSERT(transport);
   grpc_channel *channel = grpc_channel_create(
       &exec_ctx, target, final_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
-  grpc_channel_args_destroy(final_args);
+  grpc_channel_args_destroy(&exec_ctx, final_args);
   grpc_chttp2_transport_start_reading(&exec_ctx, transport, NULL);
 
   grpc_exec_ctx_finish(&exec_ctx);

src/core/ext/transport/chttp2/client/secure/secure_channel_create.c

@@ -39,7 +39,6 @@
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
-#include "src/core/ext/client_channel/resolver_registry.h"
 #include "src/core/ext/transport/chttp2/client/chttp2_connector.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/security/credentials/credentials.h"
@@ -47,40 +46,16 @@
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/channel.h"
 
-typedef struct {
-  grpc_client_channel_factory base;
-  gpr_refcount refs;
-  grpc_channel_security_connector *security_connector;
-} client_channel_factory;
-
 static void client_channel_factory_ref(
-    grpc_client_channel_factory *cc_factory) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  gpr_ref(&f->refs);
-}
+    grpc_client_channel_factory *cc_factory) {}
 
 static void client_channel_factory_unref(
-    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  if (gpr_unref(&f->refs)) {
-    GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
-                                  "client_channel_factory");
-    gpr_free(f);
-  }
-}
-
-static void add_handshakers(grpc_exec_ctx *exec_ctx, void *security_connector,
-                            grpc_handshake_manager *handshake_mgr) {
-  grpc_channel_security_connector_add_handshakers(exec_ctx, security_connector,
-                                                  handshake_mgr);
-}
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {}
 
 static grpc_subchannel *client_channel_factory_create_subchannel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const grpc_subchannel_args *args) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  grpc_connector *connector = grpc_chttp2_connector_create(
-      exec_ctx, args->server_name, add_handshakers, f->security_connector);
+  grpc_connector *connector = grpc_chttp2_connector_create();
   grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args);
   grpc_connector_unref(exec_ctx, connector);
   return s;
@@ -90,18 +65,15 @@ static grpc_channel *client_channel_factory_create_channel(
     grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     const char *target, grpc_client_channel_type type,
     const grpc_channel_args *args) {
-  client_channel_factory *f = (client_channel_factory *)cc_factory;
-  grpc_channel *channel =
-      grpc_channel_create(exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-  grpc_resolver *resolver = grpc_resolver_create(target, args);
-  if (resolver == NULL) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
-                                "client_channel_factory_create_channel");
-    return NULL;
-  }
-  grpc_client_channel_finish_initialization(
-      exec_ctx, grpc_channel_get_channel_stack(channel), resolver, &f->base);
-  GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create_channel");
+  // Add channel arg containing the server URI.
+  grpc_arg arg;
+  arg.type = GRPC_ARG_STRING;
+  arg.key = GRPC_ARG_SERVER_URI;
+  arg.value.string = (char *)target;
+  grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(exec_ctx, new_args);
   return channel;
 }
 
@@ -110,6 +82,9 @@ static const grpc_client_channel_factory_vtable client_channel_factory_vtable =
      client_channel_factory_create_subchannel,
      client_channel_factory_create_channel};
 
+static grpc_client_channel_factory client_channel_factory = {
+    &client_channel_factory_vtable};
+
 /* Create a secure client channel:
    Asynchronously: - resolve target
                    - connect to it (trying alternatives as presented)
@@ -136,36 +111,32 @@ grpc_channel *grpc_secure_channel_create(grpc_channel_credentials *creds,
   grpc_channel_security_connector *security_connector;
   grpc_channel_args *new_args_from_connector;
   if (grpc_channel_credentials_create_security_connector(
-          creds, target, args, &security_connector, &new_args_from_connector) !=
-      GRPC_SECURITY_OK) {
+          &exec_ctx, creds, target, args, &security_connector,
+          &new_args_from_connector) != GRPC_SECURITY_OK) {
     grpc_exec_ctx_finish(&exec_ctx);
     return grpc_lame_client_channel_create(
         target, GRPC_STATUS_INTERNAL, "Failed to create security connector.");
   }
-  grpc_arg connector_arg =
-      grpc_security_connector_to_arg(&security_connector->base);
+  // Add channel args containing the client channel factory and security
+  // connector.
+  grpc_arg args_to_add[2];
+  args_to_add[0] =
+      grpc_client_channel_factory_create_channel_arg(&client_channel_factory);
+  args_to_add[1] = grpc_security_connector_to_arg(&security_connector->base);
   grpc_channel_args *new_args = grpc_channel_args_copy_and_add(
       new_args_from_connector != NULL ? new_args_from_connector : args,
-      &connector_arg, 1);
+      args_to_add, GPR_ARRAY_SIZE(args_to_add));
   if (new_args_from_connector != NULL) {
-    grpc_channel_args_destroy(new_args_from_connector);
+    grpc_channel_args_destroy(&exec_ctx, new_args_from_connector);
   }
-  // Create client channel factory.
-  client_channel_factory *f = gpr_malloc(sizeof(*f));
-  memset(f, 0, sizeof(*f));
-  f->base.vtable = &client_channel_factory_vtable;
-  gpr_ref_init(&f->refs, 1);
-  GRPC_SECURITY_CONNECTOR_REF(&security_connector->base,
-                              "grpc_secure_channel_create");
-  f->security_connector = security_connector;
   // Create channel.
   grpc_channel *channel = client_channel_factory_create_channel(
-      &exec_ctx, &f->base, target, GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
+      &exec_ctx, &client_channel_factory, target,
+      GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args);
   // Clean up.
-  GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
+  GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &security_connector->base,
                                 "secure_client_channel_factory_create_channel");
-  grpc_channel_args_destroy(new_args);
-  grpc_client_channel_factory_unref(&exec_ctx, &f->base);
+  grpc_channel_args_destroy(&exec_ctx, new_args);
   grpc_exec_ctx_finish(&exec_ctx);
   return channel; /* may be NULL */
 }

src/core/ext/transport/chttp2/server/chttp2_server.c

@@ -46,31 +46,15 @@
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/handshaker.h"
+#include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/channel/http_server_filter.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/server.h"
 
-void grpc_chttp2_server_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory,
-    grpc_handshake_manager *handshake_mgr) {
-  if (handshaker_factory != NULL) {
-    handshaker_factory->vtable->add_handshakers(exec_ctx, handshaker_factory,
-                                                handshake_mgr);
-  }
-}
-
-void grpc_chttp2_server_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory) {
-  if (handshaker_factory != NULL) {
-    handshaker_factory->vtable->destroy(exec_ctx, handshaker_factory);
-  }
-}
-
 typedef struct pending_handshake_manager_node {
   grpc_handshake_manager *handshake_mgr;
   struct pending_handshake_manager_node *next;
@@ -80,7 +64,6 @@ typedef struct {
   grpc_server *server;
   grpc_tcp_server *tcp_server;
   grpc_channel_args *args;
-  grpc_chttp2_server_handshaker_factory *handshaker_factory;
   gpr_mu mu;
   bool shutdown;
   grpc_closure tcp_server_shutdown_complete;
@@ -148,8 +131,8 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
       // point this can be removed.
       grpc_endpoint_shutdown(exec_ctx, args->endpoint);
       grpc_endpoint_destroy(exec_ctx, args->endpoint);
-      grpc_channel_args_destroy(args->args);
-      grpc_slice_buffer_destroy(args->read_buffer);
+      grpc_channel_args_destroy(exec_ctx, args->args);
+      grpc_slice_buffer_destroy_internal(exec_ctx, args->read_buffer);
       gpr_free(args->read_buffer);
     }
   } else {
@@ -164,7 +147,7 @@ static void on_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
           connection_state->accepting_pollset, args->args);
       grpc_chttp2_transport_start_reading(exec_ctx, transport,
                                           args->read_buffer);
-      grpc_channel_args_destroy(args->args);
+      grpc_channel_args_destroy(exec_ctx, args->args);
     }
   }
   pending_handshake_manager_remove_locked(connection_state->server_state,
@@ -197,8 +180,8 @@ static void on_accept(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
   connection_state->accepting_pollset = accepting_pollset;
   connection_state->acceptor = acceptor;
   connection_state->handshake_mgr = handshake_mgr;
-  grpc_chttp2_server_handshaker_factory_add_handshakers(
-      exec_ctx, state->handshaker_factory, connection_state->handshake_mgr);
+  grpc_handshakers_add(exec_ctx, HANDSHAKER_SERVER, state->args,
+                       connection_state->handshake_mgr);
   // TODO(roth): We should really get this timeout value from channel
   // args instead of hard-coding it.
   const gpr_timespec deadline = gpr_time_add(
@@ -232,13 +215,11 @@ static void tcp_server_shutdown_complete(grpc_exec_ctx *exec_ctx, void *arg,
   // Flush queued work before destroying handshaker factory, since that
   // may do a synchronous unref.
   grpc_exec_ctx_flush(exec_ctx);
-  grpc_chttp2_server_handshaker_factory_destroy(exec_ctx,
-                                                state->handshaker_factory);
   if (destroy_done != NULL) {
     destroy_done->cb(exec_ctx, destroy_done->cb_arg, GRPC_ERROR_REF(error));
     grpc_exec_ctx_flush(exec_ctx);
   }
-  grpc_channel_args_destroy(state->args);
+  grpc_channel_args_destroy(exec_ctx, state->args);
   gpr_mu_destroy(&state->mu);
   gpr_free(state);
 }
@@ -258,10 +239,10 @@ static void server_destroy_listener(grpc_exec_ctx *exec_ctx,
   grpc_tcp_server_unref(exec_ctx, tcp_server);
 }
 
-grpc_error *grpc_chttp2_server_add_port(
-    grpc_exec_ctx *exec_ctx, grpc_server *server, const char *addr,
-    grpc_channel_args *args,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory, int *port_num) {
+grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
+                                        grpc_server *server, const char *addr,
+                                        grpc_channel_args *args,
+                                        int *port_num) {
   grpc_resolved_addresses *resolved = NULL;
   grpc_tcp_server *tcp_server = NULL;
   size_t i;
@@ -281,7 +262,8 @@ grpc_error *grpc_chttp2_server_add_port(
   state = gpr_malloc(sizeof(*state));
   memset(state, 0, sizeof(*state));
   grpc_closure_init(&state->tcp_server_shutdown_complete,
-                    tcp_server_shutdown_complete, state);
+                    tcp_server_shutdown_complete, state,
+                    grpc_schedule_on_exec_ctx);
   err = grpc_tcp_server_create(exec_ctx, &state->tcp_server_shutdown_complete,
                                args, &tcp_server);
   if (err != GRPC_ERROR_NONE) {
@@ -291,7 +273,6 @@ grpc_error *grpc_chttp2_server_add_port(
   state->server = server;
   state->tcp_server = tcp_server;
   state->args = args;
-  state->handshaker_factory = handshaker_factory;
   state->shutdown = true;
   gpr_mu_init(&state->mu);
 
@@ -345,8 +326,7 @@ error:
   if (tcp_server) {
     grpc_tcp_server_unref(exec_ctx, tcp_server);
   } else {
-    grpc_channel_args_destroy(args);
-    grpc_chttp2_server_handshaker_factory_destroy(exec_ctx, handshaker_factory);
+    grpc_channel_args_destroy(exec_ctx, args);
     gpr_free(state);
   }
   *port_num = 0;

src/core/ext/transport/chttp2/server/chttp2_server.h

@@ -36,43 +36,12 @@
 
 #include <grpc/impl/codegen/grpc_types.h>
 
-#include "src/core/lib/channel/handshaker.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 
-/// A server handshaker factory is used to create handshakers for server
-/// connections.
-typedef struct grpc_chttp2_server_handshaker_factory
-    grpc_chttp2_server_handshaker_factory;
-
-typedef struct {
-  void (*add_handshakers)(
-      grpc_exec_ctx *exec_ctx,
-      grpc_chttp2_server_handshaker_factory *handshaker_factory,
-      grpc_handshake_manager *handshake_mgr);
-  void (*destroy)(grpc_exec_ctx *exec_ctx,
-                  grpc_chttp2_server_handshaker_factory *handshaker_factory);
-} grpc_chttp2_server_handshaker_factory_vtable;
-
-struct grpc_chttp2_server_handshaker_factory {
-  const grpc_chttp2_server_handshaker_factory_vtable *vtable;
-};
-
-void grpc_chttp2_server_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory,
-    grpc_handshake_manager *handshake_mgr);
-
-void grpc_chttp2_server_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory);
-
 /// Adds a port to \a server.  Sets \a port_num to the port number.
-/// If \a handshaker_factory is not NULL, it will be used to create
-/// handshakers for the port.
-/// Takes ownership of \a args and \a handshaker_factory.
-grpc_error *grpc_chttp2_server_add_port(
-    grpc_exec_ctx *exec_ctx, grpc_server *server, const char *addr,
-    grpc_channel_args *args,
-    grpc_chttp2_server_handshaker_factory *handshaker_factory, int *port_num);
+/// Takes ownership of \a args.
+grpc_error *grpc_chttp2_server_add_port(grpc_exec_ctx *exec_ctx,
+                                        grpc_server *server, const char *addr,
+                                        grpc_channel_args *args, int *port_num);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H */

src/core/ext/transport/chttp2/server/insecure/server_chttp2.c

@@ -47,8 +47,7 @@ int grpc_server_add_insecure_http2_port(grpc_server *server, const char *addr) {
                  (server, addr));
   grpc_error *err = grpc_chttp2_server_add_port(
       &exec_ctx, server, addr,
-      grpc_channel_args_copy(grpc_server_get_channel_args(server)),
-      NULL /* handshaker_factory */, &port_num);
+      grpc_channel_args_copy(grpc_server_get_channel_args(server)), &port_num);
   if (err != GRPC_ERROR_NONE) {
     const char *msg = grpc_error_string(err);
     gpr_log(GPR_ERROR, "%s", msg);

src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c

@@ -62,7 +62,7 @@ void grpc_server_add_insecure_channel_from_fd(grpc_server *server,
   grpc_endpoint *server_endpoint =
       grpc_tcp_create(grpc_fd_create(fd, name), resource_quota,
                       GRPC_TCP_DEFAULT_READ_SLICE_SIZE, name);
-  grpc_resource_quota_internal_unref(&exec_ctx, resource_quota);
+  grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
 
   gpr_free(name);
 

src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c

@@ -49,34 +49,6 @@
 #include "src/core/lib/surface/api_trace.h"
 #include "src/core/lib/surface/server.h"
 
-typedef struct {
-  grpc_chttp2_server_handshaker_factory base;
-  grpc_server_security_connector *security_connector;
-} server_security_handshaker_factory;
-
-static void server_security_handshaker_factory_add_handshakers(
-    grpc_exec_ctx *exec_ctx, grpc_chttp2_server_handshaker_factory *hf,
-    grpc_handshake_manager *handshake_mgr) {
-  server_security_handshaker_factory *handshaker_factory =
-      (server_security_handshaker_factory *)hf;
-  grpc_server_security_connector_add_handshakers(
-      exec_ctx, handshaker_factory->security_connector, handshake_mgr);
-}
-
-static void server_security_handshaker_factory_destroy(
-    grpc_exec_ctx *exec_ctx, grpc_chttp2_server_handshaker_factory *hf) {
-  server_security_handshaker_factory *handshaker_factory =
-      (server_security_handshaker_factory *)hf;
-  GRPC_SECURITY_CONNECTOR_UNREF(&handshaker_factory->security_connector->base,
-                                "server");
-  gpr_free(hf);
-}
-
-static const grpc_chttp2_server_handshaker_factory_vtable
-    server_security_handshaker_factory_vtable = {
-        server_security_handshaker_factory_add_handshakers,
-        server_security_handshaker_factory_destroy};
-
 int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
                                       grpc_server_credentials *creds) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
@@ -94,7 +66,7 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
     goto done;
   }
   grpc_security_status status =
-      grpc_server_credentials_create_security_connector(creds, &sc);
+      grpc_server_credentials_create_security_connector(&exec_ctx, creds, &sc);
   if (status != GRPC_SECURITY_OK) {
     char *msg;
     gpr_asprintf(&msg,
@@ -105,20 +77,19 @@ int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr,
     gpr_free(msg);
     goto done;
   }
-  // Create handshaker factory.
-  server_security_handshaker_factory *handshaker_factory =
-      gpr_malloc(sizeof(*handshaker_factory));
-  memset(handshaker_factory, 0, sizeof(*handshaker_factory));
-  handshaker_factory->base.vtable = &server_security_handshaker_factory_vtable;
-  handshaker_factory->security_connector = sc;
   // Create channel args.
-  grpc_arg channel_arg = grpc_server_credentials_to_arg(creds);
-  grpc_channel_args *args = grpc_channel_args_copy_and_add(
-      grpc_server_get_channel_args(server), &channel_arg, 1);
+  grpc_arg args_to_add[2];
+  args_to_add[0] = grpc_server_credentials_to_arg(creds);
+  args_to_add[1] = grpc_security_connector_to_arg(&sc->base);
+  grpc_channel_args *args =
+      grpc_channel_args_copy_and_add(grpc_server_get_channel_args(server),
+                                     args_to_add, GPR_ARRAY_SIZE(args_to_add));
   // Add server port.
-  err = grpc_chttp2_server_add_port(&exec_ctx, server, addr, args,
-                                    &handshaker_factory->base, &port_num);
+  err = grpc_chttp2_server_add_port(&exec_ctx, server, addr, args, &port_num);
 done:
+  if (sc != NULL) {
+    GRPC_SECURITY_CONNECTOR_UNREF(&exec_ctx, &sc->base, "server");
+  }
   grpc_exec_ctx_finish(&exec_ctx);
   if (err != GRPC_ERROR_NONE) {
     const char *msg = grpc_error_string(err);

src/core/ext/transport/chttp2/transport/bin_decoder.c

@@ -34,6 +34,7 @@
 #include "src/core/ext/transport/chttp2/transport/bin_decoder.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
@@ -143,7 +144,8 @@ bool grpc_base64_decode_partial(struct grpc_base64_decode_context *ctx) {
   return true;
 }
 
-grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
+grpc_slice grpc_chttp2_base64_decode(grpc_exec_ctx *exec_ctx,
+                                     grpc_slice input) {
   size_t input_length = GRPC_SLICE_LENGTH(input);
   size_t output_length = input_length / 4 * 3;
   struct grpc_base64_decode_context ctx;
@@ -179,7 +181,7 @@ grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
     char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
   GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
@@ -187,7 +189,8 @@ grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
   return output;
 }
 
-grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
+grpc_slice grpc_chttp2_base64_decode_with_length(grpc_exec_ctx *exec_ctx,
+                                                 grpc_slice input,
                                                  size_t output_length) {
   size_t input_length = GRPC_SLICE_LENGTH(input);
   grpc_slice output = grpc_slice_malloc(output_length);
@@ -200,7 +203,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
             "grpc_chttp2_base64_decode_with_length has a length of %d, which "
             "has a tail of 1 byte.\n",
             (int)input_length);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
 
@@ -210,7 +213,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
             "than the max possible output length %d.\n",
             (int)output_length,
             (int)(input_length / 4 * 3 + tail_xtra[input_length % 4]));
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
 
@@ -224,7 +227,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
     char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    grpc_slice_unref(output);
+    grpc_slice_unref_internal(exec_ctx, output);
     return gpr_empty_slice();
   }
   GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));