diff --git a/.clang_complete b/.clang_complete
index 79d0946b3320cb8732546341714e0686bdfcc08d..e35f74198f6bd22a22c1b547deb4711eb9d74e7a 100644
--- a/.clang_complete
+++ b/.clang_complete
@@ -4,5 +4,6 @@
 -Igens
 -I.
 -Ithird_party/boringssl/include
+-Ithird_party/benchmark/include
 -Ithird_party/zlib
 -Ithird_party/protobuf/src
diff --git a/.gitignore b/.gitignore
index da2082c088ce09c27045e816bc0e4d9b4d00d910..ad3ec64ab5af94aa39ec68235e659fc8db596466 100644
--- a/.gitignore
+++ b/.gitignore
@@ -115,3 +115,6 @@ bazel-testlogs
 
 # Debug output
 gdb.txt
+
+# ctags file
+tags
diff --git a/.gitmodules b/.gitmodules
index c8ca8ab046332dc65d9de36fcb69da09ea306205..0f003693e43243cf46d5e459796be49a7176aae4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -23,3 +23,7 @@
 [submodule "third_party/boringssl-with-bazel"]
 	path = third_party/boringssl-with-bazel
 	url = https://boringssl.googlesource.com/boringssl
+[submodule "third_party/cares/cares"]
+	path = third_party/cares/cares
+	url = https://github.com/c-ares/c-ares.git
+	branch = cares-1_12_0
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000000000000000000000000000000000000..700c61cceae6fc08bd5f9af7cff53569739c6e20
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,30 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Mocha Tests",
+            "cwd": "${workspaceRoot}",
+            "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/mocha",
+            "windows": {
+                "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/mocha.cmd"
+            },
+            "runtimeArgs": [
+                "-u",
+                "tdd",
+                "--timeout",
+                "999999",
+                "--colors",
+                "${workspaceRoot}/src/node/test"
+            ],
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "type": "node",
+            "request": "attach",
+            "name": "Attach to Process",
+            "port": 5858
+        }
+    ]
+}
diff --git a/BUILD b/BUILD
index 053f581101d5d67bc66d1194434dd7e44e2813cd..6c4d31d0b9df9083a4723a10bca67ee09b6b34cd 100644
--- a/BUILD
+++ b/BUILD
@@ -37,11 +37,11 @@ package(default_visibility = ["//visibility:public"])
 
 load("//bazel:grpc_build_system.bzl", "grpc_cc_library", "grpc_proto_plugin")
 
-g_stands_for = "good"
+g_stands_for = "green"
 
-core_version = "2.0.0-dev"
+core_version = "3.0.0-dev"
 
-version = "1.1.0-dev"
+version = "1.2.0"
 
 grpc_cc_library(
     name = "gpr",
@@ -67,6 +67,7 @@ grpc_cc_library(
         "grpc_lb_policy_pick_first",
         "grpc_lb_policy_round_robin",
         "grpc_load_reporting",
+        "grpc_resolver_dns_ares",
         "grpc_resolver_dns_native",
         "grpc_resolver_sockaddr",
         "grpc_secure",
@@ -308,8 +309,8 @@ grpc_cc_library(
     srcs = [
         "src/core/lib/profiling/basic_timers.c",
         "src/core/lib/profiling/stap_timers.c",
-        "src/core/lib/support/arena.c",
         "src/core/lib/support/alloc.c",
+        "src/core/lib/support/arena.c",
         "src/core/lib/support/atm.c",
         "src/core/lib/support/avl.c",
         "src/core/lib/support/backoff.c",
@@ -354,8 +355,8 @@ grpc_cc_library(
         "src/core/lib/support/wrap_memcpy.c",
     ],
     hdrs = [
-        "src/core/lib/support/arena.h",
         "src/core/lib/profiling/timers.h",
+        "src/core/lib/support/arena.h",
         "src/core/lib/support/backoff.h",
         "src/core/lib/support/block_annotate.h",
         "src/core/lib/support/env.h",
@@ -414,7 +415,6 @@ grpc_cc_library(
         "include/grpc/impl/codegen/gpr_slice.h",
         "include/grpc/impl/codegen/gpr_types.h",
         "include/grpc/impl/codegen/port_platform.h",
-        "include/grpc/impl/codegen/slice.h",
         "include/grpc/impl/codegen/sync.h",
         "include/grpc/impl/codegen/sync_generic.h",
         "include/grpc/impl/codegen/sync_posix.h",
@@ -436,6 +436,7 @@ grpc_cc_library(
         "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/max_age_filter.c",
         "src/core/lib/channel/message_size_filter.c",
         "src/core/lib/compression/compression.c",
         "src/core/lib/compression/message_compress.c",
@@ -472,6 +473,7 @@ grpc_cc_library(
         "src/core/lib/iomgr/resolve_address_windows.c",
         "src/core/lib/iomgr/resource_quota.c",
         "src/core/lib/iomgr/sockaddr_utils.c",
+        "src/core/lib/iomgr/socket_factory_posix.c",
         "src/core/lib/iomgr/socket_mutator.c",
         "src/core/lib/iomgr/socket_utils_common_posix.c",
         "src/core/lib/iomgr/socket_utils_linux.c",
@@ -509,6 +511,7 @@ grpc_cc_library(
         "src/core/lib/json/json_reader.c",
         "src/core/lib/json/json_string.c",
         "src/core/lib/json/json_writer.c",
+        "src/core/lib/slice/b64.c",
         "src/core/lib/slice/percent_encoding.c",
         "src/core/lib/slice/slice.c",
         "src/core/lib/slice/slice_buffer.c",
@@ -527,6 +530,7 @@ grpc_cc_library(
         "src/core/lib/surface/channel_ping.c",
         "src/core/lib/surface/channel_stack_type.c",
         "src/core/lib/surface/completion_queue.c",
+        "src/core/lib/surface/completion_queue_factory.c",
         "src/core/lib/surface/event_string.c",
         "src/core/lib/surface/lame_client.c",
         "src/core/lib/surface/metadata_array.c",
@@ -560,6 +564,7 @@ grpc_cc_library(
         "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/max_age_filter.h",
         "src/core/lib/channel/message_size_filter.h",
         "src/core/lib/compression/algorithm_metadata.h",
         "src/core/lib/compression/message_compress.h",
@@ -597,6 +602,7 @@ grpc_cc_library(
         "src/core/lib/iomgr/sockaddr_posix.h",
         "src/core/lib/iomgr/sockaddr_utils.h",
         "src/core/lib/iomgr/sockaddr_windows.h",
+        "src/core/lib/iomgr/socket_factory_posix.h",
         "src/core/lib/iomgr/socket_mutator.h",
         "src/core/lib/iomgr/socket_utils.h",
         "src/core/lib/iomgr/socket_utils_posix.h",
@@ -625,6 +631,7 @@ grpc_cc_library(
         "src/core/lib/json/json_common.h",
         "src/core/lib/json/json_reader.h",
         "src/core/lib/json/json_writer.h",
+        "src/core/lib/slice/b64.h",
         "src/core/lib/slice/percent_encoding.h",
         "src/core/lib/slice/slice_hash_table.h",
         "src/core/lib/slice/slice_internal.h",
@@ -636,6 +643,7 @@ grpc_cc_library(
         "src/core/lib/surface/channel_init.h",
         "src/core/lib/surface/channel_stack_type.h",
         "src/core/lib/surface/completion_queue.h",
+        "src/core/lib/surface/completion_queue_factory.h",
         "src/core/lib/surface/event_string.h",
         "src/core/lib/surface/init.h",
         "src/core/lib/surface/lame_client.h",
@@ -739,6 +747,7 @@ grpc_cc_library(
         "include/grpc/impl/codegen/grpc_types.h",
         "include/grpc/impl/codegen/propagation_bits.h",
         "include/grpc/impl/codegen/status.h",
+        "include/grpc/impl/codegen/slice.h",
     ],
     deps = [
         "gpr_codegen",
@@ -846,6 +855,27 @@ grpc_cc_library(
     ],
 )
 
+grpc_cc_library(
+    name = "grpc_resolver_dns_ares",
+    srcs = [
+        "src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c",
+        "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c",
+        "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c",
+    ],
+    hdrs = [
+        "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h",
+        "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+        "grpc_client_channel",
+    ],
+    external_deps = [
+        "cares",
+    ],
+)
+
 grpc_cc_library(
     name = "grpc_resolver_sockaddr",
     srcs = [
@@ -883,7 +913,6 @@ grpc_cc_library(
         "src/core/lib/security/transport/security_handshaker.c",
         "src/core/lib/security/transport/server_auth_filter.c",
         "src/core/lib/security/transport/tsi_error.c",
-        "src/core/lib/security/util/b64.c",
         "src/core/lib/security/util/json_util.c",
         "src/core/lib/surface/init_secure.c",
     ],
@@ -906,7 +935,6 @@ grpc_cc_library(
         "src/core/lib/security/transport/security_connector.h",
         "src/core/lib/security/transport/security_handshaker.h",
         "src/core/lib/security/transport/tsi_error.h",
-        "src/core/lib/security/util/b64.h",
         "src/core/lib/security/util/json_util.h",
     ],
     language = "c",
@@ -1100,16 +1128,16 @@ grpc_cc_library(
 grpc_cc_library(
     name = "tsi",
     srcs = [
-        "src/core/lib/tsi/fake_transport_security.c",
-        "src/core/lib/tsi/ssl_transport_security.c",
-        "src/core/lib/tsi/transport_security.c",
+        "src/core/tsi/fake_transport_security.c",
+        "src/core/tsi/ssl_transport_security.c",
+        "src/core/tsi/transport_security.c",
     ],
     hdrs = [
-        "src/core/lib/tsi/fake_transport_security.h",
-        "src/core/lib/tsi/ssl_transport_security.h",
-        "src/core/lib/tsi/ssl_types.h",
-        "src/core/lib/tsi/transport_security.h",
-        "src/core/lib/tsi/transport_security_interface.h",
+        "src/core/tsi/fake_transport_security.h",
+        "src/core/tsi/ssl_transport_security.h",
+        "src/core/tsi/ssl_types.h",
+        "src/core/tsi/transport_security.h",
+        "src/core/tsi/transport_security_interface.h",
     ],
     external_deps = [
         "libssl",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a8bff55342ecadb334784380fe3a40d5d801e00..e3b2558ad290ee0c0a50f40827244e872a83aafb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,6 +60,9 @@ endif()
 set(gRPC_ZLIB_PROVIDER "module" CACHE STRING "Provider of zlib library")
 set_property(CACHE gRPC_ZLIB_PROVIDER PROPERTY STRINGS "module" "package")
 
+set(gRPC_CARES_PROVIDER "module" CACHE STRING "Provider of c-ares library")
+set_property(CACHE gRPC_CARES_PROVIDER PROPERTY STRINGS "module" "package")
+
 set(gRPC_SSL_PROVIDER "module" CACHE STRING "Provider of ssl library")
 set_property(CACHE gRPC_SSL_PROVIDER PROPERTY STRINGS "module" "package")
 
@@ -126,6 +129,37 @@ elseif("${gRPC_ZLIB_PROVIDER}" STREQUAL "package")
   set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
 endif()
 
+if("${gRPC_CARES_PROVIDER}" STREQUAL "module")
+  if(NOT CARES_ROOT_DIR)
+    set(CARES_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src/c-ares)
+  endif()
+  string(TOLOWER ${CMAKE_SYSTEM_NAME} CARES_SYSTEM_NAME)
+  set(CARES_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/cares")
+  set(CARES_BUILD_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares")
+  set(CARES_PLATFORM_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/config_${CARES_SYSTEM_NAME}")
+  if(EXISTS "${CARES_ROOT_DIR}/CMakeLists.txt")
+    if("${CARES_SYSTEM_NAME}" MATCHES "windows")
+      add_definitions(-DCARES_STATICLIB=1)
+      add_definitions(-DWIN32_LEAN_AND_MEAN=1)
+    else()
+      add_definitions(-DHAVE_CONFIG_H=1)
+      add_definitions(-D_GNU_SOURCE=1)
+    endif()
+    add_subdirectory(src/c-ares third_party/cares)
+    if(TARGET cares)
+        set(_gRPC_CARES_LIBRARIES cares)
+    endif()
+  else()
+    message(WARNING "gRPC_CARES_PROVIDER is \"module\" but CARES_ROOT_DIR is wrong")
+  endif()
+elseif("${gRPC_CARES_PROVIDER}" STREQUAL "package")
+  find_package(CARES)
+  if(TARGET CARES::CARES)
+    set(_gRPC_CARES_LIBRARIES CARES::CARES)
+  endif()
+  set(_gRPC_FIND_CARES "if(NOT CARES_FOUND)\n  find_package(CARES)\nendif()")
+endif()
+
 if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
   # Building the protobuf tests require gmock what is not part of a standard protobuf checkout.
   # Disable them unless they are explicitly requested from the cmake command line (when we assume
@@ -277,7 +311,7 @@ function(protobuf_generate_grpc_cpp)
     file(RELATIVE_PATH REL_FIL ${CMAKE_SOURCE_DIR} ${ABS_FIL})
     get_filename_component(REL_DIR ${REL_FIL} DIRECTORY)
     set(RELFIL_WE "${REL_DIR}/${FIL_WE}")
-    
+
     add_custom_command(
       OUTPUT "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc"
              "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h"
@@ -293,7 +327,7 @@ function(protobuf_generate_grpc_cpp)
       WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
       COMMENT "Running gRPC C++ protocol buffer compiler on ${FIL}"
       VERBATIM)
-      
+
       set_source_files_properties("${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h" PROPERTIES GENERATED TRUE)
   endforeach()
 endfunction()
@@ -764,6 +798,10 @@ target_include_directories(gpr
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -805,7 +843,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -853,6 +890,10 @@ target_include_directories(gpr_test_util
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -877,6 +918,7 @@ add_library(grpc
   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/max_age_filter.c
   src/core/lib/channel/message_size_filter.c
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
@@ -913,6 +955,7 @@ add_library(grpc
   src/core/lib/iomgr/resolve_address_windows.c
   src/core/lib/iomgr/resource_quota.c
   src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
   src/core/lib/iomgr/socket_mutator.c
   src/core/lib/iomgr/socket_utils_common_posix.c
   src/core/lib/iomgr/socket_utils_linux.c
@@ -950,6 +993,7 @@ add_library(grpc
   src/core/lib/json/json_reader.c
   src/core/lib/json/json_string.c
   src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
   src/core/lib/slice/percent_encoding.c
   src/core/lib/slice/slice.c
   src/core/lib/slice/slice_buffer.c
@@ -968,6 +1012,7 @@ add_library(grpc
   src/core/lib/surface/channel_ping.c
   src/core/lib/surface/channel_stack_type.c
   src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
   src/core/lib/surface/event_string.c
   src/core/lib/surface/lame_client.c
   src/core/lib/surface/metadata_array.c
@@ -1031,12 +1076,11 @@ add_library(grpc
   src/core/lib/security/transport/security_handshaker.c
   src/core/lib/security/transport/server_auth_filter.c
   src/core/lib/security/transport/tsi_error.c
-  src/core/lib/security/util/b64.c
   src/core/lib/security/util/json_util.c
   src/core/lib/surface/init_secure.c
-  src/core/lib/tsi/fake_transport_security.c
-  src/core/lib/tsi/ssl_transport_security.c
-  src/core/lib/tsi/transport_security.c
+  src/core/tsi/fake_transport_security.c
+  src/core/tsi/ssl_transport_security.c
+  src/core/tsi/transport_security.c
   src/core/ext/transport/chttp2/server/chttp2_server.c
   src/core/ext/transport/chttp2/client/secure/secure_channel_create.c
   src/core/ext/client_channel/channel_connectivity.c
@@ -1073,6 +1117,9 @@ add_library(grpc
   third_party/nanopb/pb_encode.c
   src/core/ext/lb_policy/pick_first/pick_first.c
   src/core/ext/lb_policy/round_robin/round_robin.c
+  src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c
+  src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
+  src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c
   src/core/ext/resolver/dns/native/dns_resolver.c
   src/core/ext/resolver/sockaddr/sockaddr_resolver.c
   src/core/ext/load_reporting/load_reporting.c
@@ -1114,6 +1161,10 @@ target_include_directories(grpc
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -1121,6 +1172,7 @@ target_link_libraries(grpc
   ${_gRPC_BASELIB_LIBRARIES}
   ${_gRPC_SSL_LIBRARIES}
   ${_gRPC_ZLIB_LIBRARIES}
+  ${_gRPC_CARES_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   gpr
 )
@@ -1142,6 +1194,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -1150,7 +1203,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -1188,6 +1240,7 @@ add_library(grpc_cronet
   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/max_age_filter.c
   src/core/lib/channel/message_size_filter.c
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
@@ -1224,6 +1277,7 @@ add_library(grpc_cronet
   src/core/lib/iomgr/resolve_address_windows.c
   src/core/lib/iomgr/resource_quota.c
   src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
   src/core/lib/iomgr/socket_mutator.c
   src/core/lib/iomgr/socket_utils_common_posix.c
   src/core/lib/iomgr/socket_utils_linux.c
@@ -1261,6 +1315,7 @@ add_library(grpc_cronet
   src/core/lib/json/json_reader.c
   src/core/lib/json/json_string.c
   src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
   src/core/lib/slice/percent_encoding.c
   src/core/lib/slice/slice.c
   src/core/lib/slice/slice_buffer.c
@@ -1279,6 +1334,7 @@ add_library(grpc_cronet
   src/core/lib/surface/channel_ping.c
   src/core/lib/surface/channel_stack_type.c
   src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
   src/core/lib/surface/event_string.c
   src/core/lib/surface/lame_client.c
   src/core/lib/surface/metadata_array.c
@@ -1365,12 +1421,11 @@ add_library(grpc_cronet
   src/core/lib/security/transport/security_handshaker.c
   src/core/lib/security/transport/server_auth_filter.c
   src/core/lib/security/transport/tsi_error.c
-  src/core/lib/security/util/b64.c
   src/core/lib/security/util/json_util.c
   src/core/lib/surface/init_secure.c
-  src/core/lib/tsi/fake_transport_security.c
-  src/core/lib/tsi/ssl_transport_security.c
-  src/core/lib/tsi/transport_security.c
+  src/core/tsi/fake_transport_security.c
+  src/core/tsi/ssl_transport_security.c
+  src/core/tsi/transport_security.c
   src/core/ext/transport/chttp2/client/chttp2_connector.c
   src/core/ext/load_reporting/load_reporting.c
   src/core/ext/load_reporting/load_reporting_filter.c
@@ -1397,6 +1452,10 @@ target_include_directories(grpc_cronet
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -1424,6 +1483,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -1432,7 +1492,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -1490,6 +1549,7 @@ add_library(grpc_test_util
   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/max_age_filter.c
   src/core/lib/channel/message_size_filter.c
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
@@ -1526,6 +1586,7 @@ add_library(grpc_test_util
   src/core/lib/iomgr/resolve_address_windows.c
   src/core/lib/iomgr/resource_quota.c
   src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
   src/core/lib/iomgr/socket_mutator.c
   src/core/lib/iomgr/socket_utils_common_posix.c
   src/core/lib/iomgr/socket_utils_linux.c
@@ -1563,6 +1624,7 @@ add_library(grpc_test_util
   src/core/lib/json/json_reader.c
   src/core/lib/json/json_string.c
   src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
   src/core/lib/slice/percent_encoding.c
   src/core/lib/slice/slice.c
   src/core/lib/slice/slice_buffer.c
@@ -1581,6 +1643,7 @@ add_library(grpc_test_util
   src/core/lib/surface/channel_ping.c
   src/core/lib/surface/channel_stack_type.c
   src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
   src/core/lib/surface/event_string.c
   src/core/lib/surface/lame_client.c
   src/core/lib/surface/metadata_array.c
@@ -1622,6 +1685,10 @@ target_include_directories(grpc_test_util
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -1649,6 +1716,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -1657,7 +1725,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -1711,6 +1778,10 @@ target_include_directories(grpc_test_util_unsecure
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -1739,6 +1810,7 @@ add_library(grpc_unsecure
   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/max_age_filter.c
   src/core/lib/channel/message_size_filter.c
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
@@ -1775,6 +1847,7 @@ add_library(grpc_unsecure
   src/core/lib/iomgr/resolve_address_windows.c
   src/core/lib/iomgr/resource_quota.c
   src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
   src/core/lib/iomgr/socket_mutator.c
   src/core/lib/iomgr/socket_utils_common_posix.c
   src/core/lib/iomgr/socket_utils_linux.c
@@ -1812,6 +1885,7 @@ add_library(grpc_unsecure
   src/core/lib/json/json_reader.c
   src/core/lib/json/json_string.c
   src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
   src/core/lib/slice/percent_encoding.c
   src/core/lib/slice/slice.c
   src/core/lib/slice/slice_buffer.c
@@ -1830,6 +1904,7 @@ add_library(grpc_unsecure
   src/core/lib/surface/channel_ping.c
   src/core/lib/surface/channel_stack_type.c
   src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
   src/core/lib/surface/event_string.c
   src/core/lib/surface/lame_client.c
   src/core/lib/surface/metadata_array.c
@@ -1896,6 +1971,9 @@ add_library(grpc_unsecure
   src/core/ext/client_channel/subchannel.c
   src/core/ext/client_channel/subchannel_index.c
   src/core/ext/client_channel/uri_parser.c
+  src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c
+  src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
+  src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c
   src/core/ext/resolver/dns/native/dns_resolver.c
   src/core/ext/resolver/sockaddr/sockaddr_resolver.c
   src/core/ext/load_reporting/load_reporting.c
@@ -1946,6 +2024,10 @@ target_include_directories(grpc_unsecure
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -1972,6 +2054,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -1980,7 +2063,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -2029,6 +2111,10 @@ target_include_directories(reconnect_server
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -2069,6 +2155,10 @@ target_include_directories(test_tcp_server
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -2125,6 +2215,134 @@ add_library(grpc++
   src/cpp/util/status.cc
   src/cpp/util/string_ref.cc
   src/cpp/util/time_cc.cc
+  src/core/lib/channel/channel_args.c
+  src/core/lib/channel/channel_stack.c
+  src/core/lib/channel/channel_stack_builder.c
+  src/core/lib/channel/compress_filter.c
+  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/max_age_filter.c
+  src/core/lib/channel/message_size_filter.c
+  src/core/lib/compression/compression.c
+  src/core/lib/compression/message_compress.c
+  src/core/lib/debug/trace.c
+  src/core/lib/http/format_request.c
+  src/core/lib/http/httpcli.c
+  src/core/lib/http/parser.c
+  src/core/lib/iomgr/closure.c
+  src/core/lib/iomgr/combiner.c
+  src/core/lib/iomgr/endpoint.c
+  src/core/lib/iomgr/endpoint_pair_posix.c
+  src/core/lib/iomgr/endpoint_pair_uv.c
+  src/core/lib/iomgr/endpoint_pair_windows.c
+  src/core/lib/iomgr/error.c
+  src/core/lib/iomgr/ev_epoll_linux.c
+  src/core/lib/iomgr/ev_poll_posix.c
+  src/core/lib/iomgr/ev_posix.c
+  src/core/lib/iomgr/exec_ctx.c
+  src/core/lib/iomgr/executor.c
+  src/core/lib/iomgr/iocp_windows.c
+  src/core/lib/iomgr/iomgr.c
+  src/core/lib/iomgr/iomgr_posix.c
+  src/core/lib/iomgr/iomgr_uv.c
+  src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/load_file.c
+  src/core/lib/iomgr/network_status_tracker.c
+  src/core/lib/iomgr/polling_entity.c
+  src/core/lib/iomgr/pollset_set_uv.c
+  src/core/lib/iomgr/pollset_set_windows.c
+  src/core/lib/iomgr/pollset_uv.c
+  src/core/lib/iomgr/pollset_windows.c
+  src/core/lib/iomgr/resolve_address_posix.c
+  src/core/lib/iomgr/resolve_address_uv.c
+  src/core/lib/iomgr/resolve_address_windows.c
+  src/core/lib/iomgr/resource_quota.c
+  src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
+  src/core/lib/iomgr/socket_mutator.c
+  src/core/lib/iomgr/socket_utils_common_posix.c
+  src/core/lib/iomgr/socket_utils_linux.c
+  src/core/lib/iomgr/socket_utils_posix.c
+  src/core/lib/iomgr/socket_utils_uv.c
+  src/core/lib/iomgr/socket_utils_windows.c
+  src/core/lib/iomgr/socket_windows.c
+  src/core/lib/iomgr/tcp_client_posix.c
+  src/core/lib/iomgr/tcp_client_uv.c
+  src/core/lib/iomgr/tcp_client_windows.c
+  src/core/lib/iomgr/tcp_posix.c
+  src/core/lib/iomgr/tcp_server_posix.c
+  src/core/lib/iomgr/tcp_server_utils_posix_common.c
+  src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c
+  src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c
+  src/core/lib/iomgr/tcp_server_uv.c
+  src/core/lib/iomgr/tcp_server_windows.c
+  src/core/lib/iomgr/tcp_uv.c
+  src/core/lib/iomgr/tcp_windows.c
+  src/core/lib/iomgr/time_averaged_stats.c
+  src/core/lib/iomgr/timer_generic.c
+  src/core/lib/iomgr/timer_heap.c
+  src/core/lib/iomgr/timer_uv.c
+  src/core/lib/iomgr/udp_server.c
+  src/core/lib/iomgr/unix_sockets_posix.c
+  src/core/lib/iomgr/unix_sockets_posix_noop.c
+  src/core/lib/iomgr/wakeup_fd_cv.c
+  src/core/lib/iomgr/wakeup_fd_eventfd.c
+  src/core/lib/iomgr/wakeup_fd_nospecial.c
+  src/core/lib/iomgr/wakeup_fd_pipe.c
+  src/core/lib/iomgr/wakeup_fd_posix.c
+  src/core/lib/iomgr/workqueue_uv.c
+  src/core/lib/iomgr/workqueue_windows.c
+  src/core/lib/json/json.c
+  src/core/lib/json/json_reader.c
+  src/core/lib/json/json_string.c
+  src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
+  src/core/lib/slice/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.c
+  src/core/lib/slice/slice_hash_table.c
+  src/core/lib/slice/slice_intern.c
+  src/core/lib/slice/slice_string_helpers.c
+  src/core/lib/surface/alarm.c
+  src/core/lib/surface/api_trace.c
+  src/core/lib/surface/byte_buffer.c
+  src/core/lib/surface/byte_buffer_reader.c
+  src/core/lib/surface/call.c
+  src/core/lib/surface/call_details.c
+  src/core/lib/surface/call_log_batch.c
+  src/core/lib/surface/channel.c
+  src/core/lib/surface/channel_init.c
+  src/core/lib/surface/channel_ping.c
+  src/core/lib/surface/channel_stack_type.c
+  src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
+  src/core/lib/surface/event_string.c
+  src/core/lib/surface/lame_client.c
+  src/core/lib/surface/metadata_array.c
+  src/core/lib/surface/server.c
+  src/core/lib/surface/validate_metadata.c
+  src/core/lib/surface/version.c
+  src/core/lib/transport/bdp_estimator.c
+  src/core/lib/transport/byte_stream.c
+  src/core/lib/transport/connectivity_state.c
+  src/core/lib/transport/error_utils.c
+  src/core/lib/transport/metadata.c
+  src/core/lib/transport/metadata_batch.c
+  src/core/lib/transport/pid_controller.c
+  src/core/lib/transport/service_config.c
+  src/core/lib/transport/static_metadata.c
+  src/core/lib/transport/status_conversion.c
+  src/core/lib/transport/timeout_encoding.c
+  src/core/lib/transport/transport.c
+  src/core/lib/transport/transport_op_string.c
+  third_party/nanopb/pb_common.c
+  third_party/nanopb/pb_decode.c
+  third_party/nanopb/pb_encode.c
   src/cpp/codegen/codegen_init.cc
 )
 
@@ -2148,6 +2366,10 @@ target_include_directories(grpc++
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -2158,6 +2380,7 @@ target_link_libraries(grpc++
   ${_gRPC_PROTOBUF_LIBRARIES}
   ${_gRPC_ALLTARGETS_LIBRARIES}
   grpc
+  gpr
 )
 
 foreach(_hdr
@@ -2242,6 +2465,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -2250,11 +2474,20 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
+  include/grpc/byte_buffer.h
+  include/grpc/byte_buffer_reader.h
+  include/grpc/compression.h
+  include/grpc/grpc.h
+  include/grpc/grpc_posix.h
+  include/grpc/grpc_security_constants.h
+  include/grpc/load_reporting.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
+  include/grpc/status.h
   include/grpc++/impl/codegen/proto_utils.h
   include/grpc++/impl/codegen/config_protobuf.h
 )
@@ -2313,30 +2546,6 @@ add_library(grpc++_cronet
   src/cpp/util/status.cc
   src/cpp/util/string_ref.cc
   src/cpp/util/time_cc.cc
-  src/cpp/codegen/codegen_init.cc
-  src/core/ext/transport/chttp2/client/insecure/channel_create.c
-  src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
-  src/core/ext/transport/chttp2/client/chttp2_connector.c
-  src/core/ext/transport/chttp2/transport/bin_decoder.c
-  src/core/ext/transport/chttp2/transport/bin_encoder.c
-  src/core/ext/transport/chttp2/transport/chttp2_plugin.c
-  src/core/ext/transport/chttp2/transport/chttp2_transport.c
-  src/core/ext/transport/chttp2/transport/frame_data.c
-  src/core/ext/transport/chttp2/transport/frame_goaway.c
-  src/core/ext/transport/chttp2/transport/frame_ping.c
-  src/core/ext/transport/chttp2/transport/frame_rst_stream.c
-  src/core/ext/transport/chttp2/transport/frame_settings.c
-  src/core/ext/transport/chttp2/transport/frame_window_update.c
-  src/core/ext/transport/chttp2/transport/hpack_encoder.c
-  src/core/ext/transport/chttp2/transport/hpack_parser.c
-  src/core/ext/transport/chttp2/transport/hpack_table.c
-  src/core/ext/transport/chttp2/transport/huffsyms.c
-  src/core/ext/transport/chttp2/transport/incoming_metadata.c
-  src/core/ext/transport/chttp2/transport/parsing.c
-  src/core/ext/transport/chttp2/transport/stream_lists.c
-  src/core/ext/transport/chttp2/transport/stream_map.c
-  src/core/ext/transport/chttp2/transport/varint.c
-  src/core/ext/transport/chttp2/transport/writing.c
   src/core/lib/channel/channel_args.c
   src/core/lib/channel/channel_stack.c
   src/core/lib/channel/channel_stack_builder.c
@@ -2348,6 +2557,7 @@ add_library(grpc++_cronet
   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/max_age_filter.c
   src/core/lib/channel/message_size_filter.c
   src/core/lib/compression/compression.c
   src/core/lib/compression/message_compress.c
@@ -2384,6 +2594,7 @@ add_library(grpc++_cronet
   src/core/lib/iomgr/resolve_address_windows.c
   src/core/lib/iomgr/resource_quota.c
   src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
   src/core/lib/iomgr/socket_mutator.c
   src/core/lib/iomgr/socket_utils_common_posix.c
   src/core/lib/iomgr/socket_utils_linux.c
@@ -2421,6 +2632,7 @@ add_library(grpc++_cronet
   src/core/lib/json/json_reader.c
   src/core/lib/json/json_string.c
   src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
   src/core/lib/slice/percent_encoding.c
   src/core/lib/slice/slice.c
   src/core/lib/slice/slice_buffer.c
@@ -2439,6 +2651,7 @@ add_library(grpc++_cronet
   src/core/lib/surface/channel_ping.c
   src/core/lib/surface/channel_stack_type.c
   src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
   src/core/lib/surface/event_string.c
   src/core/lib/surface/lame_client.c
   src/core/lib/surface/metadata_array.c
@@ -2458,6 +2671,33 @@ add_library(grpc++_cronet
   src/core/lib/transport/timeout_encoding.c
   src/core/lib/transport/transport.c
   src/core/lib/transport/transport_op_string.c
+  third_party/nanopb/pb_common.c
+  third_party/nanopb/pb_decode.c
+  third_party/nanopb/pb_encode.c
+  src/cpp/codegen/codegen_init.cc
+  src/core/ext/transport/chttp2/client/insecure/channel_create.c
+  src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c
+  src/core/ext/transport/chttp2/client/chttp2_connector.c
+  src/core/ext/transport/chttp2/transport/bin_decoder.c
+  src/core/ext/transport/chttp2/transport/bin_encoder.c
+  src/core/ext/transport/chttp2/transport/chttp2_plugin.c
+  src/core/ext/transport/chttp2/transport/chttp2_transport.c
+  src/core/ext/transport/chttp2/transport/frame_data.c
+  src/core/ext/transport/chttp2/transport/frame_goaway.c
+  src/core/ext/transport/chttp2/transport/frame_ping.c
+  src/core/ext/transport/chttp2/transport/frame_rst_stream.c
+  src/core/ext/transport/chttp2/transport/frame_settings.c
+  src/core/ext/transport/chttp2/transport/frame_window_update.c
+  src/core/ext/transport/chttp2/transport/hpack_encoder.c
+  src/core/ext/transport/chttp2/transport/hpack_parser.c
+  src/core/ext/transport/chttp2/transport/hpack_table.c
+  src/core/ext/transport/chttp2/transport/huffsyms.c
+  src/core/ext/transport/chttp2/transport/incoming_metadata.c
+  src/core/ext/transport/chttp2/transport/parsing.c
+  src/core/ext/transport/chttp2/transport/stream_lists.c
+  src/core/ext/transport/chttp2/transport/stream_map.c
+  src/core/ext/transport/chttp2/transport/varint.c
+  src/core/ext/transport/chttp2/transport/writing.c
   src/core/ext/transport/chttp2/alpn/alpn.c
   src/core/ext/client_channel/channel_connectivity.c
   src/core/ext/client_channel/client_channel.c
@@ -2496,9 +2736,6 @@ add_library(grpc++_cronet
   src/core/ext/census/resource.c
   src/core/ext/census/trace_context.c
   src/core/ext/census/tracing.c
-  third_party/nanopb/pb_common.c
-  third_party/nanopb/pb_decode.c
-  third_party/nanopb/pb_encode.c
 )
 
 if(WIN32 AND MSVC)
@@ -2521,6 +2758,10 @@ target_include_directories(grpc++_cronet
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -2616,6 +2857,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -2624,7 +2866,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -2690,6 +2931,10 @@ target_include_directories(grpc++_proto_reflection_desc_db
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -2746,6 +2991,10 @@ target_include_directories(grpc++_reflection
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -2801,6 +3050,10 @@ target_include_directories(grpc++_test_config
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -2874,6 +3127,10 @@ target_include_directories(grpc++_test_util
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -2924,6 +3181,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -2932,7 +3190,6 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
@@ -2988,6 +3245,134 @@ add_library(grpc++_unsecure
   src/cpp/util/status.cc
   src/cpp/util/string_ref.cc
   src/cpp/util/time_cc.cc
+  src/core/lib/channel/channel_args.c
+  src/core/lib/channel/channel_stack.c
+  src/core/lib/channel/channel_stack_builder.c
+  src/core/lib/channel/compress_filter.c
+  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/max_age_filter.c
+  src/core/lib/channel/message_size_filter.c
+  src/core/lib/compression/compression.c
+  src/core/lib/compression/message_compress.c
+  src/core/lib/debug/trace.c
+  src/core/lib/http/format_request.c
+  src/core/lib/http/httpcli.c
+  src/core/lib/http/parser.c
+  src/core/lib/iomgr/closure.c
+  src/core/lib/iomgr/combiner.c
+  src/core/lib/iomgr/endpoint.c
+  src/core/lib/iomgr/endpoint_pair_posix.c
+  src/core/lib/iomgr/endpoint_pair_uv.c
+  src/core/lib/iomgr/endpoint_pair_windows.c
+  src/core/lib/iomgr/error.c
+  src/core/lib/iomgr/ev_epoll_linux.c
+  src/core/lib/iomgr/ev_poll_posix.c
+  src/core/lib/iomgr/ev_posix.c
+  src/core/lib/iomgr/exec_ctx.c
+  src/core/lib/iomgr/executor.c
+  src/core/lib/iomgr/iocp_windows.c
+  src/core/lib/iomgr/iomgr.c
+  src/core/lib/iomgr/iomgr_posix.c
+  src/core/lib/iomgr/iomgr_uv.c
+  src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/load_file.c
+  src/core/lib/iomgr/network_status_tracker.c
+  src/core/lib/iomgr/polling_entity.c
+  src/core/lib/iomgr/pollset_set_uv.c
+  src/core/lib/iomgr/pollset_set_windows.c
+  src/core/lib/iomgr/pollset_uv.c
+  src/core/lib/iomgr/pollset_windows.c
+  src/core/lib/iomgr/resolve_address_posix.c
+  src/core/lib/iomgr/resolve_address_uv.c
+  src/core/lib/iomgr/resolve_address_windows.c
+  src/core/lib/iomgr/resource_quota.c
+  src/core/lib/iomgr/sockaddr_utils.c
+  src/core/lib/iomgr/socket_factory_posix.c
+  src/core/lib/iomgr/socket_mutator.c
+  src/core/lib/iomgr/socket_utils_common_posix.c
+  src/core/lib/iomgr/socket_utils_linux.c
+  src/core/lib/iomgr/socket_utils_posix.c
+  src/core/lib/iomgr/socket_utils_uv.c
+  src/core/lib/iomgr/socket_utils_windows.c
+  src/core/lib/iomgr/socket_windows.c
+  src/core/lib/iomgr/tcp_client_posix.c
+  src/core/lib/iomgr/tcp_client_uv.c
+  src/core/lib/iomgr/tcp_client_windows.c
+  src/core/lib/iomgr/tcp_posix.c
+  src/core/lib/iomgr/tcp_server_posix.c
+  src/core/lib/iomgr/tcp_server_utils_posix_common.c
+  src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c
+  src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c
+  src/core/lib/iomgr/tcp_server_uv.c
+  src/core/lib/iomgr/tcp_server_windows.c
+  src/core/lib/iomgr/tcp_uv.c
+  src/core/lib/iomgr/tcp_windows.c
+  src/core/lib/iomgr/time_averaged_stats.c
+  src/core/lib/iomgr/timer_generic.c
+  src/core/lib/iomgr/timer_heap.c
+  src/core/lib/iomgr/timer_uv.c
+  src/core/lib/iomgr/udp_server.c
+  src/core/lib/iomgr/unix_sockets_posix.c
+  src/core/lib/iomgr/unix_sockets_posix_noop.c
+  src/core/lib/iomgr/wakeup_fd_cv.c
+  src/core/lib/iomgr/wakeup_fd_eventfd.c
+  src/core/lib/iomgr/wakeup_fd_nospecial.c
+  src/core/lib/iomgr/wakeup_fd_pipe.c
+  src/core/lib/iomgr/wakeup_fd_posix.c
+  src/core/lib/iomgr/workqueue_uv.c
+  src/core/lib/iomgr/workqueue_windows.c
+  src/core/lib/json/json.c
+  src/core/lib/json/json_reader.c
+  src/core/lib/json/json_string.c
+  src/core/lib/json/json_writer.c
+  src/core/lib/slice/b64.c
+  src/core/lib/slice/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.c
+  src/core/lib/slice/slice_hash_table.c
+  src/core/lib/slice/slice_intern.c
+  src/core/lib/slice/slice_string_helpers.c
+  src/core/lib/surface/alarm.c
+  src/core/lib/surface/api_trace.c
+  src/core/lib/surface/byte_buffer.c
+  src/core/lib/surface/byte_buffer_reader.c
+  src/core/lib/surface/call.c
+  src/core/lib/surface/call_details.c
+  src/core/lib/surface/call_log_batch.c
+  src/core/lib/surface/channel.c
+  src/core/lib/surface/channel_init.c
+  src/core/lib/surface/channel_ping.c
+  src/core/lib/surface/channel_stack_type.c
+  src/core/lib/surface/completion_queue.c
+  src/core/lib/surface/completion_queue_factory.c
+  src/core/lib/surface/event_string.c
+  src/core/lib/surface/lame_client.c
+  src/core/lib/surface/metadata_array.c
+  src/core/lib/surface/server.c
+  src/core/lib/surface/validate_metadata.c
+  src/core/lib/surface/version.c
+  src/core/lib/transport/bdp_estimator.c
+  src/core/lib/transport/byte_stream.c
+  src/core/lib/transport/connectivity_state.c
+  src/core/lib/transport/error_utils.c
+  src/core/lib/transport/metadata.c
+  src/core/lib/transport/metadata_batch.c
+  src/core/lib/transport/pid_controller.c
+  src/core/lib/transport/service_config.c
+  src/core/lib/transport/static_metadata.c
+  src/core/lib/transport/status_conversion.c
+  src/core/lib/transport/timeout_encoding.c
+  src/core/lib/transport/transport.c
+  src/core/lib/transport/transport_op_string.c
+  third_party/nanopb/pb_common.c
+  third_party/nanopb/pb_decode.c
+  third_party/nanopb/pb_encode.c
   src/cpp/codegen/codegen_init.cc
 )
 
@@ -3011,6 +3396,10 @@ target_include_directories(grpc++_unsecure
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -3105,6 +3494,7 @@ foreach(_hdr
   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/slice.h
   include/grpc/impl/codegen/status.h
   include/grpc/impl/codegen/atm.h
   include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -3113,11 +3503,20 @@ foreach(_hdr
   include/grpc/impl/codegen/gpr_slice.h
   include/grpc/impl/codegen/gpr_types.h
   include/grpc/impl/codegen/port_platform.h
-  include/grpc/impl/codegen/slice.h
   include/grpc/impl/codegen/sync.h
   include/grpc/impl/codegen/sync_generic.h
   include/grpc/impl/codegen/sync_posix.h
   include/grpc/impl/codegen/sync_windows.h
+  include/grpc/byte_buffer.h
+  include/grpc/byte_buffer_reader.h
+  include/grpc/compression.h
+  include/grpc/grpc.h
+  include/grpc/grpc_posix.h
+  include/grpc/grpc_security_constants.h
+  include/grpc/load_reporting.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
+  include/grpc/status.h
 )
   string(REPLACE "include/" "" _path ${_hdr})
   get_filename_component(_path ${_path} PATH)
@@ -3161,6 +3560,10 @@ target_include_directories(grpc_benchmark
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3216,6 +3619,10 @@ target_include_directories(grpc_cli_libs
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3271,6 +3678,10 @@ target_include_directories(grpc_plugin_support
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -3347,6 +3758,10 @@ target_include_directories(http2_client_main
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3398,6 +3813,10 @@ target_include_directories(interop_client_helper
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3464,6 +3883,10 @@ target_include_directories(interop_client_main
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3511,6 +3934,10 @@ target_include_directories(interop_server_helper
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3576,6 +4003,10 @@ target_include_directories(interop_server_lib
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3623,6 +4054,10 @@ target_include_directories(interop_server_main
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3660,6 +4095,7 @@ add_library(qps
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.grpc.pb.cc
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.pb.h
   ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/services.grpc.pb.h
+  test/cpp/qps/benchmark_config.cc
   test/cpp/qps/client_async.cc
   test/cpp/qps/client_sync.cc
   test/cpp/qps/driver.cc
@@ -3669,7 +4105,6 @@ add_library(qps
   test/cpp/qps/server_async.cc
   test/cpp/qps/server_sync.cc
   test/cpp/qps/usage_timer.cc
-  test/cpp/util/benchmark_config.cc
 )
 
 if(WIN32 AND MSVC)
@@ -3707,6 +4142,10 @@ target_include_directories(qps
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -3748,6 +4187,10 @@ target_include_directories(grpc_csharp_ext
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -3769,6 +4212,94 @@ endif()
 
 if (gRPC_BUILD_TESTS)
 
+add_library(ares
+  third_party/cares/cares/ares__close_sockets.c
+  third_party/cares/cares/ares__get_hostent.c
+  third_party/cares/cares/ares__read_line.c
+  third_party/cares/cares/ares__timeval.c
+  third_party/cares/cares/ares_cancel.c
+  third_party/cares/cares/ares_create_query.c
+  third_party/cares/cares/ares_data.c
+  third_party/cares/cares/ares_destroy.c
+  third_party/cares/cares/ares_expand_name.c
+  third_party/cares/cares/ares_expand_string.c
+  third_party/cares/cares/ares_fds.c
+  third_party/cares/cares/ares_free_hostent.c
+  third_party/cares/cares/ares_free_string.c
+  third_party/cares/cares/ares_getenv.c
+  third_party/cares/cares/ares_gethostbyaddr.c
+  third_party/cares/cares/ares_gethostbyname.c
+  third_party/cares/cares/ares_getnameinfo.c
+  third_party/cares/cares/ares_getopt.c
+  third_party/cares/cares/ares_getsock.c
+  third_party/cares/cares/ares_init.c
+  third_party/cares/cares/ares_library_init.c
+  third_party/cares/cares/ares_llist.c
+  third_party/cares/cares/ares_mkquery.c
+  third_party/cares/cares/ares_nowarn.c
+  third_party/cares/cares/ares_options.c
+  third_party/cares/cares/ares_parse_a_reply.c
+  third_party/cares/cares/ares_parse_aaaa_reply.c
+  third_party/cares/cares/ares_parse_mx_reply.c
+  third_party/cares/cares/ares_parse_naptr_reply.c
+  third_party/cares/cares/ares_parse_ns_reply.c
+  third_party/cares/cares/ares_parse_ptr_reply.c
+  third_party/cares/cares/ares_parse_soa_reply.c
+  third_party/cares/cares/ares_parse_srv_reply.c
+  third_party/cares/cares/ares_parse_txt_reply.c
+  third_party/cares/cares/ares_platform.c
+  third_party/cares/cares/ares_process.c
+  third_party/cares/cares/ares_query.c
+  third_party/cares/cares/ares_search.c
+  third_party/cares/cares/ares_send.c
+  third_party/cares/cares/ares_strcasecmp.c
+  third_party/cares/cares/ares_strdup.c
+  third_party/cares/cares/ares_strerror.c
+  third_party/cares/cares/ares_timeout.c
+  third_party/cares/cares/ares_version.c
+  third_party/cares/cares/ares_writev.c
+  third_party/cares/cares/bitncmp.c
+  third_party/cares/cares/inet_net_pton.c
+  third_party/cares/cares/inet_ntop.c
+  third_party/cares/cares/windows_port.c
+)
+
+if(WIN32 AND MSVC)
+  set_target_properties(ares PROPERTIES COMPILE_PDB_NAME "ares"
+    COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
+  )
+  if (gRPC_INSTALL)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/ares.pdb
+      DESTINATION ${CMAKE_INSTALL_LIBDIR} OPTIONAL
+    )
+  endif()
+endif()
+
+
+target_include_directories(ares
+  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 ${BENCHMARK}/include
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(ares
+  ${_gRPC_SSL_LIBRARIES}
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+)
+
+
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
+
 add_library(bad_client_test
   test/core/bad_client/bad_client.c
 )
@@ -3793,6 +4324,10 @@ target_include_directories(bad_client_test
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -3832,6 +4367,10 @@ target_include_directories(bad_ssl_test_server
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -3877,6 +4416,8 @@ add_library(end2end_tests
   test/core/end2end/tests/large_metadata.c
   test/core/end2end/tests/load_reporting_hook.c
   test/core/end2end/tests/max_concurrent_streams.c
+  test/core/end2end/tests/max_connection_age.c
+  test/core/end2end/tests/max_connection_idle.c
   test/core/end2end/tests/max_message_length.c
   test/core/end2end/tests/negative_deadline.c
   test/core/end2end/tests/network_status_change.c
@@ -3922,6 +4463,10 @@ target_include_directories(end2end_tests
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -3967,6 +4512,8 @@ add_library(end2end_nosec_tests
   test/core/end2end/tests/large_metadata.c
   test/core/end2end/tests/load_reporting_hook.c
   test/core/end2end/tests/max_concurrent_streams.c
+  test/core/end2end/tests/max_connection_age.c
+  test/core/end2end/tests/max_connection_idle.c
   test/core/end2end/tests/max_message_length.c
   test/core/end2end/tests/negative_deadline.c
   test/core/end2end/tests/network_status_change.c
@@ -4012,6 +4559,10 @@ target_include_directories(end2end_nosec_tests
   PRIVATE ${ZLIB_INCLUDE_DIR}
   PRIVATE ${BENCHMARK}/include
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4041,6 +4592,10 @@ target_include_directories(alarm_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4068,6 +4623,10 @@ target_include_directories(algorithm_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4095,6 +4654,10 @@ target_include_directories(alloc_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4120,6 +4683,10 @@ target_include_directories(alpn_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4147,6 +4714,10 @@ target_include_directories(arena_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4172,6 +4743,10 @@ target_include_directories(bad_server_response_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4200,6 +4775,10 @@ target_include_directories(bdp_estimator_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4227,6 +4806,10 @@ target_include_directories(bin_decoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4252,6 +4835,10 @@ target_include_directories(bin_encoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4277,6 +4864,10 @@ target_include_directories(census_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4304,6 +4895,10 @@ target_include_directories(census_resource_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4331,6 +4926,10 @@ target_include_directories(census_trace_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4358,6 +4957,10 @@ target_include_directories(channel_create_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4385,6 +4988,10 @@ target_include_directories(chttp2_hpack_encoder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4412,6 +5019,10 @@ target_include_directories(chttp2_stream_map_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4439,6 +5050,10 @@ target_include_directories(chttp2_varint_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4466,6 +5081,10 @@ target_include_directories(combiner_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4493,6 +5112,10 @@ target_include_directories(compression_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4520,6 +5143,10 @@ target_include_directories(concurrent_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4547,6 +5174,10 @@ target_include_directories(connection_refused_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4574,6 +5205,10 @@ target_include_directories(dns_resolver_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4601,6 +5236,10 @@ target_include_directories(dns_resolver_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4629,6 +5268,10 @@ target_include_directories(dualstack_socket_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4657,6 +5300,10 @@ target_include_directories(endpoint_pair_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4684,6 +5331,10 @@ target_include_directories(error_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4712,6 +5363,10 @@ target_include_directories(ev_epoll_linux_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4741,6 +5396,10 @@ target_include_directories(fd_conservation_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4770,6 +5429,10 @@ target_include_directories(fd_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4798,6 +5461,10 @@ target_include_directories(fling_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4825,6 +5492,10 @@ target_include_directories(fling_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4853,6 +5524,10 @@ target_include_directories(fling_stream_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4882,6 +5557,10 @@ target_include_directories(fling_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4909,6 +5588,10 @@ target_include_directories(gen_hpack_tables
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4941,6 +5624,10 @@ target_include_directories(gen_legal_metadata_characters
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -4971,6 +5658,10 @@ target_include_directories(gen_percent_encoding_tables
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5003,6 +5694,10 @@ target_include_directories(goaway_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5031,6 +5726,10 @@ target_include_directories(gpr_avl_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5056,6 +5755,10 @@ target_include_directories(gpr_backoff_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5081,6 +5784,10 @@ target_include_directories(gpr_cmdline_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5106,6 +5813,10 @@ target_include_directories(gpr_cpu_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5131,6 +5842,10 @@ target_include_directories(gpr_env_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5156,6 +5871,10 @@ target_include_directories(gpr_histogram_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5181,6 +5900,10 @@ target_include_directories(gpr_host_port_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5206,6 +5929,10 @@ target_include_directories(gpr_log_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5231,6 +5958,10 @@ target_include_directories(gpr_mpscq_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5256,6 +5987,10 @@ target_include_directories(gpr_spinlock_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5281,6 +6016,10 @@ target_include_directories(gpr_stack_lockfree_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5306,6 +6045,10 @@ target_include_directories(gpr_string_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5331,6 +6074,10 @@ target_include_directories(gpr_sync_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5356,6 +6103,10 @@ target_include_directories(gpr_thd_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5381,6 +6132,10 @@ target_include_directories(gpr_time_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5406,6 +6161,10 @@ target_include_directories(gpr_tls_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5431,6 +6190,10 @@ target_include_directories(gpr_useful_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5456,6 +6219,10 @@ target_include_directories(grpc_auth_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5471,7 +6238,7 @@ endif (gRPC_BUILD_TESTS)
 if (gRPC_BUILD_TESTS)
 
 add_executable(grpc_b64_test
-  test/core/security/b64_test.c
+  test/core/slice/b64_test.c
 )
 
 
@@ -5483,6 +6250,10 @@ target_include_directories(grpc_b64_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5510,6 +6281,10 @@ target_include_directories(grpc_byte_buffer_reader_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5537,6 +6312,10 @@ target_include_directories(grpc_channel_args_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5564,6 +6343,10 @@ target_include_directories(grpc_channel_stack_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5591,6 +6374,10 @@ target_include_directories(grpc_completion_queue_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5618,6 +6405,10 @@ target_include_directories(grpc_completion_queue_threading_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5644,6 +6435,10 @@ target_include_directories(grpc_create_jwt
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5678,6 +6473,10 @@ target_include_directories(grpc_credentials_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5705,6 +6504,10 @@ target_include_directories(grpc_fetch_oauth2
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5732,6 +6535,10 @@ target_include_directories(grpc_invalid_channel_args_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5760,6 +6567,10 @@ target_include_directories(grpc_json_token_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5788,6 +6599,10 @@ target_include_directories(grpc_jwt_verifier_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5814,6 +6629,10 @@ target_include_directories(grpc_print_google_default_creds_token
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5847,6 +6666,10 @@ target_include_directories(grpc_security_connector_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5873,6 +6696,10 @@ target_include_directories(grpc_verify_jwt
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5907,6 +6734,10 @@ target_include_directories(handshake_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5937,6 +6768,10 @@ target_include_directories(handshake_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5966,6 +6801,10 @@ target_include_directories(hpack_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -5993,6 +6832,10 @@ target_include_directories(hpack_table_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6020,6 +6863,10 @@ target_include_directories(http_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6047,6 +6894,10 @@ target_include_directories(httpcli_format_request_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6075,6 +6926,10 @@ target_include_directories(httpcli_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6104,6 +6959,10 @@ target_include_directories(httpscli_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6132,6 +6991,10 @@ target_include_directories(init_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6159,6 +7022,10 @@ target_include_directories(invalid_call_argument_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6186,6 +7053,10 @@ target_include_directories(json_rewrite
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6211,6 +7082,10 @@ target_include_directories(json_rewrite_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6238,6 +7113,10 @@ target_include_directories(json_stream_error_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6265,6 +7144,10 @@ target_include_directories(json_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6292,6 +7175,10 @@ target_include_directories(lame_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6319,6 +7206,10 @@ target_include_directories(lb_policies_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6346,6 +7237,10 @@ target_include_directories(load_file_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6373,6 +7268,10 @@ target_include_directories(memory_profile_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6400,6 +7299,10 @@ target_include_directories(memory_profile_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6428,6 +7331,10 @@ target_include_directories(memory_profile_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6456,6 +7363,10 @@ target_include_directories(message_compress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6483,6 +7394,10 @@ target_include_directories(mlog_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6510,6 +7425,10 @@ target_include_directories(multiple_server_queues_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6537,6 +7456,10 @@ target_include_directories(murmur_hash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6562,6 +7485,10 @@ target_include_directories(no_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6589,6 +7516,10 @@ target_include_directories(parse_address_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6616,6 +7547,10 @@ target_include_directories(percent_encoding_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6644,6 +7579,10 @@ target_include_directories(pollset_set_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6673,6 +7612,10 @@ target_include_directories(resolve_address_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6701,6 +7644,10 @@ target_include_directories(resolve_address_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6728,6 +7675,10 @@ target_include_directories(resource_quota_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6755,6 +7706,10 @@ target_include_directories(secure_channel_create_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6782,6 +7737,10 @@ target_include_directories(secure_endpoint_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6809,6 +7768,10 @@ target_include_directories(sequential_connectivity_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6836,6 +7799,10 @@ target_include_directories(server_chttp2_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6863,6 +7830,10 @@ target_include_directories(server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6890,6 +7861,10 @@ target_include_directories(slice_buffer_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6917,6 +7892,10 @@ target_include_directories(slice_string_helpers_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6944,6 +7923,10 @@ target_include_directories(slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6971,6 +7954,10 @@ target_include_directories(sockaddr_resolver_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -6998,6 +7985,10 @@ target_include_directories(sockaddr_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7026,6 +8017,10 @@ target_include_directories(socket_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7054,6 +8049,10 @@ target_include_directories(status_conversion_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7081,6 +8080,10 @@ target_include_directories(stream_owned_slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7109,6 +8112,10 @@ target_include_directories(tcp_client_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7137,6 +8144,10 @@ target_include_directories(tcp_client_uv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7165,6 +8176,10 @@ target_include_directories(tcp_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7194,6 +8209,10 @@ target_include_directories(tcp_server_posix_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7222,6 +8241,10 @@ target_include_directories(tcp_server_uv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7249,6 +8272,10 @@ target_include_directories(time_averaged_stats_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7276,6 +8303,10 @@ target_include_directories(timeout_encoding_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7303,6 +8334,10 @@ target_include_directories(timer_heap_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7330,6 +8365,10 @@ target_include_directories(timer_list_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7357,6 +8396,10 @@ target_include_directories(transport_connectivity_state_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7384,6 +8427,10 @@ target_include_directories(transport_metadata_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7411,6 +8458,10 @@ target_include_directories(transport_pid_controller_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7439,6 +8490,10 @@ target_include_directories(transport_security_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7468,6 +8523,10 @@ target_include_directories(udp_server_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7496,6 +8555,10 @@ target_include_directories(uri_parser_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7524,6 +8587,10 @@ target_include_directories(wakeup_fd_cv_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -7553,6 +8620,10 @@ target_include_directories(alarm_cpp_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7588,6 +8659,10 @@ target_include_directories(async_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7623,6 +8698,10 @@ target_include_directories(auth_property_iterator_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7659,6 +8738,10 @@ target_include_directories(bm_arena
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7698,6 +8781,10 @@ target_include_directories(bm_call_create
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7737,6 +8824,10 @@ target_include_directories(bm_chttp2_hpack
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7776,6 +8867,10 @@ target_include_directories(bm_chttp2_transport
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7815,6 +8910,10 @@ target_include_directories(bm_closure
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7854,6 +8953,10 @@ target_include_directories(bm_cq
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7893,6 +8996,10 @@ target_include_directories(bm_error
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7932,6 +9039,10 @@ target_include_directories(bm_fullstack_streaming_ping_pong
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -7971,6 +9082,10 @@ target_include_directories(bm_fullstack_streaming_pump
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8010,6 +9125,10 @@ target_include_directories(bm_fullstack_trickle
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8049,6 +9168,10 @@ target_include_directories(bm_fullstack_unary_ping_pong
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8088,6 +9211,10 @@ target_include_directories(bm_metadata
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8127,6 +9254,10 @@ target_include_directories(bm_pollset
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8165,6 +9296,10 @@ target_include_directories(channel_arguments_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8197,6 +9332,10 @@ target_include_directories(channel_filter_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8229,6 +9368,10 @@ target_include_directories(cli_call_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8266,6 +9409,10 @@ target_include_directories(client_crash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8302,6 +9449,10 @@ target_include_directories(client_crash_test_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8372,6 +9523,10 @@ target_include_directories(codegen_test_full
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8440,6 +9595,10 @@ target_include_directories(codegen_test_minimal
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8469,6 +9628,10 @@ target_include_directories(credentials_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8501,6 +9664,10 @@ target_include_directories(cxx_byte_buffer_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8535,6 +9702,10 @@ target_include_directories(cxx_slice_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8569,6 +9740,10 @@ target_include_directories(cxx_string_ref_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8599,6 +9774,10 @@ target_include_directories(cxx_time_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8633,6 +9812,10 @@ target_include_directories(end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8668,6 +9851,10 @@ target_include_directories(filter_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8703,6 +9890,10 @@ target_include_directories(generic_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8745,6 +9936,10 @@ target_include_directories(golden_file_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8777,6 +9972,10 @@ target_include_directories(grpc_cli
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -8810,6 +10009,10 @@ target_include_directories(grpc_cpp_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -8844,6 +10047,10 @@ target_include_directories(grpc_csharp_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -8878,6 +10085,10 @@ target_include_directories(grpc_node_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -8912,6 +10123,10 @@ target_include_directories(grpc_objective_c_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -8946,6 +10161,10 @@ target_include_directories(grpc_php_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -8980,6 +10199,10 @@ target_include_directories(grpc_python_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -9014,6 +10237,10 @@ target_include_directories(grpc_ruby_plugin
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE ${_gRPC_PROTO_GENS_DIR}
 )
@@ -9064,6 +10291,10 @@ target_include_directories(grpc_tool_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9109,6 +10340,10 @@ target_include_directories(grpclb_api_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9149,6 +10384,10 @@ target_include_directories(grpclb_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9184,6 +10423,10 @@ target_include_directories(health_service_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9219,6 +10462,10 @@ target_include_directories(http2_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9255,6 +10502,10 @@ target_include_directories(hybrid_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9290,6 +10541,10 @@ target_include_directories(interop_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9329,6 +10584,10 @@ target_include_directories(interop_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9370,6 +10629,10 @@ target_include_directories(interop_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9406,6 +10669,10 @@ target_include_directories(json_run_localhost
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9450,6 +10717,10 @@ target_include_directories(metrics_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9483,6 +10754,10 @@ target_include_directories(mock_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9518,6 +10793,10 @@ target_include_directories(noop-benchmark
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9548,6 +10827,10 @@ target_include_directories(proto_server_reflection_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9585,6 +10868,10 @@ target_include_directories(proto_utils_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9617,6 +10904,10 @@ target_include_directories(qps_interarrival_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9654,6 +10945,10 @@ target_include_directories(qps_json_driver
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9692,6 +10987,10 @@ target_include_directories(qps_openloop_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9730,6 +11029,10 @@ target_include_directories(qps_worker
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9788,6 +11091,10 @@ target_include_directories(reconnect_interop_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9845,6 +11152,10 @@ target_include_directories(reconnect_interop_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9883,6 +11194,10 @@ target_include_directories(round_robin_end2end_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9918,6 +11233,10 @@ target_include_directories(secure_auth_context_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9954,6 +11273,10 @@ target_include_directories(secure_sync_unary_ping_pong_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -9991,6 +11314,10 @@ target_include_directories(server_builder_plugin_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10040,6 +11367,10 @@ target_include_directories(server_builder_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10075,6 +11406,10 @@ target_include_directories(server_context_test_spouse_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10110,6 +11445,10 @@ target_include_directories(server_crash_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10146,6 +11485,10 @@ target_include_directories(server_crash_test_client
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10181,6 +11524,10 @@ target_include_directories(shutdown_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10216,6 +11563,10 @@ target_include_directories(status_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10251,6 +11602,10 @@ target_include_directories(streaming_throughput_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10293,7 +11648,6 @@ add_executable(stress_test
   test/cpp/interop/interop_client.cc
   test/cpp/interop/stress_interop_client.cc
   test/cpp/interop/stress_test.cc
-  test/cpp/util/create_test_channel.cc
   test/cpp/util/metrics_server.cc
   third_party/googletest/src/gtest-all.cc
 )
@@ -10319,6 +11673,10 @@ target_include_directories(stress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10355,6 +11713,10 @@ target_include_directories(thread_manager_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10388,6 +11750,10 @@ target_include_directories(thread_stress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10424,6 +11790,10 @@ target_include_directories(writes_per_rpc_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
   PRIVATE third_party/googletest/include
   PRIVATE third_party/googletest
@@ -10459,6 +11829,10 @@ target_include_directories(public_headers_must_be_c89
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10484,6 +11858,10 @@ target_include_directories(badreq_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10513,6 +11891,10 @@ target_include_directories(connection_prefix_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10542,6 +11924,10 @@ target_include_directories(head_of_line_blocking_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10571,6 +11957,10 @@ target_include_directories(headers_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10600,6 +11990,10 @@ target_include_directories(initial_settings_frame_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10629,6 +12023,10 @@ target_include_directories(large_metadata_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10658,6 +12056,10 @@ target_include_directories(server_registered_method_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10687,6 +12089,10 @@ target_include_directories(simple_request_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10716,6 +12122,10 @@ target_include_directories(unknown_frame_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10745,6 +12155,10 @@ target_include_directories(window_overflow_bad_client_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10775,6 +12189,10 @@ target_include_directories(bad_ssl_cert_server
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10805,6 +12223,10 @@ target_include_directories(bad_ssl_cert_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10833,6 +12255,10 @@ target_include_directories(h2_census_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10861,6 +12287,10 @@ target_include_directories(h2_compress_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10889,6 +12319,10 @@ target_include_directories(h2_fakesec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10918,6 +12352,10 @@ target_include_directories(h2_fd_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10947,6 +12385,10 @@ target_include_directories(h2_full_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -10976,6 +12418,10 @@ target_include_directories(h2_full+pipe_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11005,6 +12451,10 @@ target_include_directories(h2_full+trace_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11033,6 +12483,10 @@ target_include_directories(h2_http_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11061,6 +12515,10 @@ target_include_directories(h2_load_reporting_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11089,6 +12547,10 @@ target_include_directories(h2_oauth2_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11117,6 +12579,10 @@ target_include_directories(h2_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11145,6 +12611,10 @@ target_include_directories(h2_sockpair_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11173,6 +12643,10 @@ target_include_directories(h2_sockpair+trace_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11201,6 +12675,10 @@ target_include_directories(h2_sockpair_1byte_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11229,6 +12707,10 @@ target_include_directories(h2_ssl_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11257,6 +12739,10 @@ target_include_directories(h2_ssl_cert_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11285,6 +12771,10 @@ target_include_directories(h2_ssl_proxy_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11314,6 +12804,10 @@ target_include_directories(h2_uds_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11343,6 +12837,10 @@ target_include_directories(h2_census_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11371,6 +12869,10 @@ target_include_directories(h2_compress_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11400,6 +12902,10 @@ target_include_directories(h2_fd_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11429,6 +12935,10 @@ target_include_directories(h2_full_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11458,6 +12968,10 @@ target_include_directories(h2_full+pipe_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11487,6 +13001,10 @@ target_include_directories(h2_full+trace_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11515,6 +13033,10 @@ target_include_directories(h2_http_proxy_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11543,6 +13065,10 @@ target_include_directories(h2_load_reporting_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11571,6 +13097,10 @@ target_include_directories(h2_proxy_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11599,6 +13129,10 @@ target_include_directories(h2_sockpair_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11627,6 +13161,10 @@ target_include_directories(h2_sockpair+trace_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11655,6 +13193,10 @@ target_include_directories(h2_sockpair_1byte_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11684,6 +13226,10 @@ target_include_directories(h2_uds_nosec_test
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11714,6 +13260,10 @@ target_include_directories(api_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11742,6 +13292,10 @@ target_include_directories(client_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11770,6 +13324,10 @@ target_include_directories(hpack_parser_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11798,6 +13356,10 @@ target_include_directories(http_request_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11826,6 +13388,10 @@ target_include_directories(http_response_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11854,6 +13420,10 @@ target_include_directories(json_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11882,6 +13452,10 @@ target_include_directories(nanopb_fuzzer_response_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11910,6 +13484,10 @@ target_include_directories(nanopb_fuzzer_serverlist_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11938,6 +13516,10 @@ target_include_directories(percent_decode_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11966,6 +13548,10 @@ target_include_directories(percent_encode_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -11994,6 +13580,10 @@ target_include_directories(server_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -12022,6 +13612,10 @@ target_include_directories(ssl_server_fuzzer_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
@@ -12050,6 +13644,10 @@ target_include_directories(uri_fuzzer_test_one_entry
   PRIVATE ${BENCHMARK_ROOT_DIR}/include
   PRIVATE ${ZLIB_ROOT_DIR}
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
   PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
 )
 
diff --git a/INSTALL.md b/INSTALL.md
index 24f088ea4926dd93132c15faa08a3307de82781d..ac03a5e6ac82f5e33ce825204f61de093dc5af51 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,4 +1,4 @@
-#If you are in a hurry
+# If you are in a hurry
 
 For language-specific installation instructions for gRPC runtime, please
 refer to these documents
@@ -14,15 +14,21 @@ refer to these documents
  * [Ruby](src/ruby): `gem install grpc`
 
 
-#Pre-requisites
+# Pre-requisites
 
-##Linux
+## Linux
 
 ```sh
  $ [sudo] apt-get install build-essential autoconf libtool
 ```
 
-##Mac OSX
+If you plan to build from source and run tests, install the following as well:
+```sh
+ $ [sudo] apt-get install libgflags-dev libgtest-dev
+ $ [sudo] apt-get install clang libc++-dev
+```
+
+## Mac OSX
 
 For a Mac system, git is not available by default. You will first need to
 install Xcode from the Mac AppStore and then run the following command from a
@@ -32,7 +38,7 @@ terminal:
  $ [sudo] xcode-select --install
 ```
 
-##Protoc
+## Protoc
 
 By default gRPC uses [protocol buffers](https://github.com/google/protobuf),
 you will need the `protoc` compiler to generate stub server and client code.
@@ -43,7 +49,7 @@ repository recursively and it detects that you don't already have it
 installed.
 
 
-#Build from Source
+# Build from Source
 
 For developers who are interested to contribute, here is how to compile the
 gRPC C Core library.
@@ -56,16 +62,16 @@ gRPC C Core library.
  $ [sudo] make install
 ```
 
-##Windows
+## Windows
 
 There are several ways to build under Windows, of varying complexity depending
 on experience with the tools involved.
 
-###Pre-generated Visual Studio solution
+### Pre-generated Visual Studio solution
 
 The pre-generated VS projects & solution are checked into the repository under the [vsprojects](/vsprojects) directory.
-  
-###Building using CMake (with BoringSSL)
+
+### Building using CMake (with BoringSSL)
 - Install [CMake](https://cmake.org/download/).
 - Install [Active State Perl](http://www.activestate.com/activeperl/) (`choco install activeperl`)
 - Install [Ninja](https://ninja-build.org/) (`choco install ninja`)
@@ -81,14 +87,14 @@ The pre-generated VS projects & solution are checked into the repository under t
 ```
 NOTE: Currently you can only use Ninja to build using cmake on Windows (because of the boringssl dependency).
 
-###msys2 (with mingw)
+### msys2 (with mingw)
 
 The Makefile (and source code) should support msys2's mingw32 and mingw64
 compilers. Building with msys2's native compiler is also possible, but
 difficult.
 
 This approach requires having [msys2](https://msys2.github.io/) installed.
-  
+
 ```
 # Install prerequisites
 MSYS2$ pacman -S autoconf automake gcc libtool mingw-w64-x86_64-toolchain perl pkg-config zlib
diff --git a/Makefile b/Makefile
index a1659cc8e5e6aa7e707dbedf384dba017b5fa3be..7499dbbf50d1844b7f9a46b34087280f3a871bce 100644
--- a/Makefile
+++ b/Makefile
@@ -95,6 +95,42 @@ LDXX_opt = $(DEFAULT_CXX)
 CPPFLAGS_opt = -O2
 DEFINES_opt = NDEBUG
 
+VALID_CONFIG_asan-trace-cmp = 1
+REQUIRE_CUSTOM_LIBRARIES_asan-trace-cmp = 1
+CC_asan-trace-cmp = clang
+CXX_asan-trace-cmp = clang++
+LD_asan-trace-cmp = clang
+LDXX_asan-trace-cmp = clang++
+CPPFLAGS_asan-trace-cmp = -O0 -fsanitize-coverage=edge -fsanitize-coverage=trace-cmp -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
+LDFLAGS_asan-trace-cmp = -fsanitize=address
+
+VALID_CONFIG_dbg = 1
+CC_dbg = $(DEFAULT_CC)
+CXX_dbg = $(DEFAULT_CXX)
+LD_dbg = $(DEFAULT_CC)
+LDXX_dbg = $(DEFAULT_CXX)
+CPPFLAGS_dbg = -O0
+DEFINES_dbg = _DEBUG DEBUG
+
+VALID_CONFIG_asan = 1
+REQUIRE_CUSTOM_LIBRARIES_asan = 1
+CC_asan = clang
+CXX_asan = clang++
+LD_asan = clang
+LDXX_asan = clang++
+CPPFLAGS_asan = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
+LDFLAGS_asan = -fsanitize=address
+
+VALID_CONFIG_msan = 1
+REQUIRE_CUSTOM_LIBRARIES_msan = 1
+CC_msan = clang
+CXX_msan = clang++
+LD_msan = clang
+LDXX_msan = clang++
+CPPFLAGS_msan = -O0 -fsanitize-coverage=edge -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -Wno-unused-command-line-argument -fPIE -pie -DGPR_NO_DIRECT_SYSCALLS
+LDFLAGS_msan = -fsanitize=memory -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -fPIE -pie $(if $(JENKINS_BUILD),-Wl$(comma)-Ttext-segment=0x7e0000000000,)
+DEFINES_msan = NDEBUG
+
 VALID_CONFIG_basicprof = 1
 CC_basicprof = $(DEFAULT_CC)
 CXX_basicprof = $(DEFAULT_CXX)
@@ -121,22 +157,25 @@ LDXX_asan-noleaks = clang++
 CPPFLAGS_asan-noleaks = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan-noleaks = -fsanitize=address
 
-VALID_CONFIG_asan-trace-cmp = 1
-REQUIRE_CUSTOM_LIBRARIES_asan-trace-cmp = 1
-CC_asan-trace-cmp = clang
-CXX_asan-trace-cmp = clang++
-LD_asan-trace-cmp = clang
-LDXX_asan-trace-cmp = clang++
-CPPFLAGS_asan-trace-cmp = -O0 -fsanitize-coverage=edge -fsanitize-coverage=trace-cmp -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
-LDFLAGS_asan-trace-cmp = -fsanitize=address
+VALID_CONFIG_ubsan = 1
+REQUIRE_CUSTOM_LIBRARIES_ubsan = 1
+CC_ubsan = clang
+CXX_ubsan = clang++
+LD_ubsan = clang
+LDXX_ubsan = clang++
+CPPFLAGS_ubsan = -O0 -fsanitize-coverage=edge -fsanitize=undefined -fno-omit-frame-pointer -Wno-unused-command-line-argument -Wvarargs
+LDFLAGS_ubsan = -fsanitize=undefined,unsigned-integer-overflow
+DEFINES_ubsan = NDEBUG
 
-VALID_CONFIG_dbg = 1
-CC_dbg = $(DEFAULT_CC)
-CXX_dbg = $(DEFAULT_CXX)
-LD_dbg = $(DEFAULT_CC)
-LDXX_dbg = $(DEFAULT_CXX)
-CPPFLAGS_dbg = -O0
-DEFINES_dbg = _DEBUG DEBUG
+VALID_CONFIG_tsan = 1
+REQUIRE_CUSTOM_LIBRARIES_tsan = 1
+CC_tsan = clang
+CXX_tsan = clang++
+LD_tsan = clang
+LDXX_tsan = clang++
+CPPFLAGS_tsan = -O0 -fsanitize=thread -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
+LDFLAGS_tsan = -fsanitize=thread
+DEFINES_tsan = GRPC_TSAN
 
 VALID_CONFIG_stapprof = 1
 CC_stapprof = $(DEFAULT_CC)
@@ -164,44 +203,13 @@ CPPFLAGS_memcheck = -O0
 LDFLAGS_memcheck = -rdynamic
 DEFINES_memcheck = _DEBUG DEBUG
 
-VALID_CONFIG_asan = 1
-REQUIRE_CUSTOM_LIBRARIES_asan = 1
-CC_asan = clang
-CXX_asan = clang++
-LD_asan = clang
-LDXX_asan = clang++
-CPPFLAGS_asan = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
-LDFLAGS_asan = -fsanitize=address
-
-VALID_CONFIG_tsan = 1
-REQUIRE_CUSTOM_LIBRARIES_tsan = 1
-CC_tsan = clang
-CXX_tsan = clang++
-LD_tsan = clang
-LDXX_tsan = clang++
-CPPFLAGS_tsan = -O0 -fsanitize=thread -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
-LDFLAGS_tsan = -fsanitize=thread
-DEFINES_tsan = GRPC_TSAN
-
-VALID_CONFIG_ubsan = 1
-REQUIRE_CUSTOM_LIBRARIES_ubsan = 1
-CC_ubsan = clang
-CXX_ubsan = clang++
-LD_ubsan = clang
-LDXX_ubsan = clang++
-CPPFLAGS_ubsan = -O0 -fsanitize-coverage=edge -fsanitize=undefined -fno-omit-frame-pointer -Wno-unused-command-line-argument -Wvarargs
-LDFLAGS_ubsan = -fsanitize=undefined,unsigned-integer-overflow
-DEFINES_ubsan = NDEBUG
-
-VALID_CONFIG_msan = 1
-REQUIRE_CUSTOM_LIBRARIES_msan = 1
-CC_msan = clang
-CXX_msan = clang++
-LD_msan = clang
-LDXX_msan = clang++
-CPPFLAGS_msan = -O0 -fsanitize-coverage=edge -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -Wno-unused-command-line-argument -fPIE -pie -DGPR_NO_DIRECT_SYSCALLS
-LDFLAGS_msan = -fsanitize=memory -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -fPIE -pie $(if $(JENKINS_BUILD),-Wl$(comma)-Ttext-segment=0x7e0000000000,)
-DEFINES_msan = NDEBUG
+VALID_CONFIG_lto = 1
+CC_lto = $(DEFAULT_CC)
+CXX_lto = $(DEFAULT_CXX)
+LD_lto = $(DEFAULT_CC)
+LDXX_lto = $(DEFAULT_CXX)
+CPPFLAGS_lto = -O2
+DEFINES_lto = NDEBUG
 
 VALID_CONFIG_mutrace = 1
 CC_mutrace = $(DEFAULT_CC)
@@ -465,7 +473,7 @@ SHARED_VERSION_CORE = -3
 SHARED_VERSION_CPP = -1
 SHARED_VERSION_CSHARP = -1
 else ifeq ($(SYSTEM),Darwin)
-EXECUTABLE_SUFFIX = 
+EXECUTABLE_SUFFIX =
 SHARED_EXT_CORE = dylib
 SHARED_EXT_CPP = dylib
 SHARED_EXT_CSHARP = dylib
@@ -474,7 +482,7 @@ SHARED_VERSION_CORE =
 SHARED_VERSION_CPP =
 SHARED_VERSION_CSHARP =
 else
-EXECUTABLE_SUFFIX = 
+EXECUTABLE_SUFFIX =
 SHARED_EXT_CORE = so.$(CORE_VERSION)
 SHARED_EXT_CPP = so.$(CPP_VERSION)
 SHARED_EXT_CSHARP = so.$(CSHARP_VERSION)
@@ -495,6 +503,7 @@ OPENSSL_ALPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.2 openssl
 OPENSSL_NPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.1 openssl
 ZLIB_CHECK_CMD = $(PKG_CONFIG) --exists zlib
 PROTOBUF_CHECK_CMD = $(PKG_CONFIG) --atleast-version=3.0.0 protobuf
+CARES_CHECK_CMD = $(PKG_CONFIG) --exists libcares
 else # HAS_PKG_CONFIG
 
 ifeq ($(SYSTEM),MINGW32)
@@ -508,6 +517,7 @@ OPENSSL_NPN_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/open
 BORINGSSL_COMPILE_CHECK_CMD = $(CC) $(CPPFLAGS) -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX $(CFLAGS) -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI) -o $(TMPOUT) test/build/boringssl.c $(LDFLAGS)
 ZLIB_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/zlib.c -lz $(LDFLAGS)
 PROTOBUF_CHECK_CMD = $(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $(TMPOUT) test/build/protobuf.cc -lprotobuf $(LDFLAGS)
+CARES_CHECK_CMD = $(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $(TMPOUT) test/build/c-ares.c -lcares $(LDFLAGS)
 
 endif # HAS_PKG_CONFIG
 
@@ -547,12 +557,17 @@ HAS_SYSTEM_PROTOBUF ?= $(HAS_SYSTEM_PROTOBUF_VERIFY)
 ifeq ($(HAS_SYSTEM_PROTOBUF),true)
 CACHE_MK += HAS_SYSTEM_PROTOBUF = true,
 endif
+HAS_SYSTEM_CARES ?=  $(shell $(CARES_CHECK_CMD) 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_SYSTEM_CARES),true)
+CACHE_MK += HAS_SYSTEM_CARES = true,
+endif
 else
 # override system libraries if the config requires a custom compiled library
 HAS_SYSTEM_OPENSSL_ALPN = false
 HAS_SYSTEM_OPENSSL_NPN = false
 HAS_SYSTEM_ZLIB = false
 HAS_SYSTEM_PROTOBUF = false
+HAS_SYSTEM_CARES = false
 endif
 
 HAS_PROTOC ?= $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -611,6 +626,12 @@ else
 HAS_EMBEDDED_PROTOBUF = true
 endif
 
+ifeq ($(wildcard third_party/cares/cares/ares.h),)
+HAS_EMBEDDED_CARES = false
+else
+HAS_EMBEDDED_CARES = true
+endif
+
 PC_REQUIRES_GRPC =
 PC_LIBS_GRPC =
 
@@ -643,6 +664,37 @@ LIBS += z
 endif
 endif
 
+CARES_PKG_CONFIG = false
+
+ifeq ($(HAS_SYSTEM_CARES),false)
+ifeq ($(HAS_EMBEDDED_CARES), true)
+EMBED_CARES ?= true
+else
+DEP_MISSING += cares
+EMBED_CARES ?= broken
+endif
+else
+EMBED_CARES ?= false
+endif
+
+ifeq ($(EMBED_CARES),true)
+CARES_DEP = $(LIBDIR)/$(CONFIG)/libares.a
+CARES_MERGE_OBJS = $(LIBARES_OBJS)
+CARES_MERGE_LIBS = $(LIBDIR)/$(CONFIG)/libares.a
+CPPFLAGS := -Ithird_party/cares -Ithird_party/cares/cares $(CPPFLAGS)
+LDFLAGS := -L$(LIBDIR)/$(CONFIG)/c-ares $(LDFLAGS)
+else
+ifeq ($(HAS_PKG_CONFIG),true)
+PC_REQUIRES_GRPC += libcares
+CPPFLAGS += $(shell $(PKG_CONFIG) --cflags libcares)
+LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libcares)
+LIBS += $(patsubst -l%,%,$(shell $(PKG_CONFIG) --libs-only-l libcares))
+else
+PC_LIBS_GRPC += -lcares
+LIBS += cares
+endif
+endif
+
 OPENSSL_PKG_CONFIG = false
 
 PC_REQUIRES_SECURE =
@@ -1231,6 +1283,7 @@ run_dep_checks:
 	$(PERFTOOLS_CHECK_CMD) || true
 	$(PROTOBUF_CHECK_CMD) || true
 	$(PROTOC_CHECK_VERSION_CMD) || true
+	$(CARES_CHECK_CMD) || true
 
 third_party/protobuf/configure:
 	$(E) "[AUTOGEN] Preparing protobuf"
@@ -1265,7 +1318,7 @@ plugins: $(PROTOC_PLUGINS)
 
 privatelibs: privatelibs_c privatelibs_cxx
 
-privatelibs_c:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libreconnect_server.a $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a $(LIBDIR)/$(CONFIG)/libz.a $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
+privatelibs_c:  $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a $(LIBDIR)/$(CONFIG)/libreconnect_server.a $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a $(LIBDIR)/$(CONFIG)/libz.a $(LIBDIR)/$(CONFIG)/libares.a $(LIBDIR)/$(CONFIG)/libbad_client_test.a $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a $(LIBDIR)/$(CONFIG)/libend2end_tests.a $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
 pc_c: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc.pc
 
 pc_c_unsecure: $(LIBDIR)/$(CONFIG)/pkgconfig/grpc_unsecure.pc
@@ -2687,7 +2740,6 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -2696,7 +2748,7 @@ PUBLIC_HEADERS_C += \
 LIBGPR_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGPR_SRC))))
 
 
-$(LIBDIR)/$(CONFIG)/libgpr.a: $(ZLIB_DEP)  $(LIBGPR_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgpr.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBGPR_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgpr.a
@@ -2708,18 +2760,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
+$(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP) $(CARES_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(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) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP)
+$(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGPR_OBJS)  $(ZLIB_DEP) $(CARES_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
 ifeq ($(SYSTEM),Darwin)
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.3 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgpr.so.3 -o $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGPR_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so.3
 	$(Q) ln -sf $(SHARED_PREFIX)gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr$(SHARED_VERSION_CORE).so
 endif
@@ -2738,7 +2790,7 @@ PUBLIC_HEADERS_C += \
 LIBGPR_TEST_UTIL_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGPR_TEST_UTIL_SRC))))
 
 
-$(LIBDIR)/$(CONFIG)/libgpr_test_util.a: $(ZLIB_DEP)  $(LIBGPR_TEST_UTIL_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgpr_test_util.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBGPR_TEST_UTIL_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgpr_test_util.a
@@ -2768,6 +2820,7 @@ LIBGRPC_SRC = \
     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/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -2804,6 +2857,7 @@ LIBGRPC_SRC = \
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -2841,6 +2895,7 @@ LIBGRPC_SRC = \
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -2859,6 +2914,7 @@ LIBGRPC_SRC = \
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -2922,12 +2978,11 @@ LIBGRPC_SRC = \
     src/core/lib/security/transport/security_handshaker.c \
     src/core/lib/security/transport/server_auth_filter.c \
     src/core/lib/security/transport/tsi_error.c \
-    src/core/lib/security/util/b64.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/server/chttp2_server.c \
     src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
     src/core/ext/client_channel/channel_connectivity.c \
@@ -2964,6 +3019,9 @@ LIBGRPC_SRC = \
     third_party/nanopb/pb_encode.c \
     src/core/ext/lb_policy/pick_first/pick_first.c \
     src/core/ext/lb_policy/round_robin/round_robin.c \
+    src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c \
     src/core/ext/resolver/dns/native/dns_resolver.c \
     src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
     src/core/ext/load_reporting/load_reporting.c \
@@ -3001,6 +3059,7 @@ PUBLIC_HEADERS_C += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -3009,7 +3068,6 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -3031,11 +3089,11 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE
 else
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBGRPC_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBGRPC_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBGRPC_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc.a
 endif
@@ -3043,18 +3101,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(CARES_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_OBJS)  $(ZLIB_DEP) $(CARES_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_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.3
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
 endif
@@ -3082,6 +3140,7 @@ LIBGRPC_CRONET_SRC = \
     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/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -3118,6 +3177,7 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -3155,6 +3215,7 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -3173,6 +3234,7 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -3259,12 +3321,11 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/security/transport/security_handshaker.c \
     src/core/lib/security/transport/server_auth_filter.c \
     src/core/lib/security/transport/tsi_error.c \
-    src/core/lib/security/util/b64.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/client/chttp2_connector.c \
     src/core/ext/load_reporting/load_reporting.c \
     src/core/ext/load_reporting/load_reporting_filter.c \
@@ -3287,6 +3348,7 @@ PUBLIC_HEADERS_C += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -3295,7 +3357,6 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -3317,11 +3378,11 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_E
 else
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc_cronet.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_cronet.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBGRPC_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_cronet.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc_cronet.a $(LIBGRPC_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc_cronet.a $(LIBGRPC_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_cronet.a
 endif
@@ -3329,18 +3390,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(CARES_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_CRONET_OBJS)  $(ZLIB_DEP) $(CARES_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_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_cronet.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_CRONET_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so.3
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_cronet$(SHARED_VERSION_CORE).so
 endif
@@ -3387,6 +3448,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     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/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -3423,6 +3485,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -3460,6 +3523,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -3478,6 +3542,7 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -3515,6 +3580,7 @@ PUBLIC_HEADERS_C += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -3523,7 +3589,6 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -3542,7 +3607,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_TEST_UTIL_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBGRPC_TEST_UTIL_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a
@@ -3585,7 +3650,7 @@ PUBLIC_HEADERS_C += \
 LIBGRPC_TEST_UTIL_UNSECURE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC_TEST_UTIL_UNSECURE_SRC))))
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a: $(ZLIB_DEP)  $(LIBGRPC_TEST_UTIL_UNSECURE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBGRPC_TEST_UTIL_UNSECURE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_test_util_unsecure.a
@@ -3616,6 +3681,7 @@ LIBGRPC_UNSECURE_SRC = \
     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/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -3652,6 +3718,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -3689,6 +3756,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -3707,6 +3775,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -3773,6 +3842,9 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/ext/client_channel/subchannel.c \
     src/core/ext/client_channel/subchannel_index.c \
     src/core/ext/client_channel/uri_parser.c \
+    src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c \
     src/core/ext/resolver/dns/native/dns_resolver.c \
     src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
     src/core/ext/load_reporting/load_reporting.c \
@@ -3819,6 +3891,7 @@ PUBLIC_HEADERS_C += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -3827,7 +3900,6 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -3837,11 +3909,11 @@ PUBLIC_HEADERS_C += \
 LIBGRPC_UNSECURE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC_UNSECURE_SRC))))
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a: $(ZLIB_DEP)  $(LIBGRPC_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBGRPC_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBGRPC_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a $(LIBGRPC_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc_unsecure.a
 endif
@@ -3849,18 +3921,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
+$(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(CARES_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(LIBDIR)/$(CONFIG)/libgpr.a
+$(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_UNSECURE_OBJS)  $(ZLIB_DEP) $(CARES_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_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_unsecure.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_UNSECURE_OBJS) $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so.3
 	$(Q) ln -sf $(SHARED_PREFIX)grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc_unsecure$(SHARED_VERSION_CORE).so
 endif
@@ -3889,7 +3961,7 @@ $(LIBDIR)/$(CONFIG)/libreconnect_server.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libreconnect_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBRECONNECT_SERVER_OBJS) 
+$(LIBDIR)/$(CONFIG)/libreconnect_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBRECONNECT_SERVER_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libreconnect_server.a
@@ -3928,7 +4000,7 @@ $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libtest_tcp_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBTEST_TCP_SERVER_OBJS) 
+$(LIBDIR)/$(CONFIG)/libtest_tcp_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBTEST_TCP_SERVER_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libtest_tcp_server.a
@@ -3991,6 +4063,134 @@ LIBGRPC++_SRC = \
     src/cpp/util/status.cc \
     src/cpp/util/string_ref.cc \
     src/cpp/util/time_cc.cc \
+    src/core/lib/channel/channel_args.c \
+    src/core/lib/channel/channel_stack.c \
+    src/core/lib/channel/channel_stack_builder.c \
+    src/core/lib/channel/compress_filter.c \
+    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/max_age_filter.c \
+    src/core/lib/channel/message_size_filter.c \
+    src/core/lib/compression/compression.c \
+    src/core/lib/compression/message_compress.c \
+    src/core/lib/debug/trace.c \
+    src/core/lib/http/format_request.c \
+    src/core/lib/http/httpcli.c \
+    src/core/lib/http/parser.c \
+    src/core/lib/iomgr/closure.c \
+    src/core/lib/iomgr/combiner.c \
+    src/core/lib/iomgr/endpoint.c \
+    src/core/lib/iomgr/endpoint_pair_posix.c \
+    src/core/lib/iomgr/endpoint_pair_uv.c \
+    src/core/lib/iomgr/endpoint_pair_windows.c \
+    src/core/lib/iomgr/error.c \
+    src/core/lib/iomgr/ev_epoll_linux.c \
+    src/core/lib/iomgr/ev_poll_posix.c \
+    src/core/lib/iomgr/ev_posix.c \
+    src/core/lib/iomgr/exec_ctx.c \
+    src/core/lib/iomgr/executor.c \
+    src/core/lib/iomgr/iocp_windows.c \
+    src/core/lib/iomgr/iomgr.c \
+    src/core/lib/iomgr/iomgr_posix.c \
+    src/core/lib/iomgr/iomgr_uv.c \
+    src/core/lib/iomgr/iomgr_windows.c \
+    src/core/lib/iomgr/load_file.c \
+    src/core/lib/iomgr/network_status_tracker.c \
+    src/core/lib/iomgr/polling_entity.c \
+    src/core/lib/iomgr/pollset_set_uv.c \
+    src/core/lib/iomgr/pollset_set_windows.c \
+    src/core/lib/iomgr/pollset_uv.c \
+    src/core/lib/iomgr/pollset_windows.c \
+    src/core/lib/iomgr/resolve_address_posix.c \
+    src/core/lib/iomgr/resolve_address_uv.c \
+    src/core/lib/iomgr/resolve_address_windows.c \
+    src/core/lib/iomgr/resource_quota.c \
+    src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
+    src/core/lib/iomgr/socket_mutator.c \
+    src/core/lib/iomgr/socket_utils_common_posix.c \
+    src/core/lib/iomgr/socket_utils_linux.c \
+    src/core/lib/iomgr/socket_utils_posix.c \
+    src/core/lib/iomgr/socket_utils_uv.c \
+    src/core/lib/iomgr/socket_utils_windows.c \
+    src/core/lib/iomgr/socket_windows.c \
+    src/core/lib/iomgr/tcp_client_posix.c \
+    src/core/lib/iomgr/tcp_client_uv.c \
+    src/core/lib/iomgr/tcp_client_windows.c \
+    src/core/lib/iomgr/tcp_posix.c \
+    src/core/lib/iomgr/tcp_server_posix.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_common.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c \
+    src/core/lib/iomgr/tcp_server_uv.c \
+    src/core/lib/iomgr/tcp_server_windows.c \
+    src/core/lib/iomgr/tcp_uv.c \
+    src/core/lib/iomgr/tcp_windows.c \
+    src/core/lib/iomgr/time_averaged_stats.c \
+    src/core/lib/iomgr/timer_generic.c \
+    src/core/lib/iomgr/timer_heap.c \
+    src/core/lib/iomgr/timer_uv.c \
+    src/core/lib/iomgr/udp_server.c \
+    src/core/lib/iomgr/unix_sockets_posix.c \
+    src/core/lib/iomgr/unix_sockets_posix_noop.c \
+    src/core/lib/iomgr/wakeup_fd_cv.c \
+    src/core/lib/iomgr/wakeup_fd_eventfd.c \
+    src/core/lib/iomgr/wakeup_fd_nospecial.c \
+    src/core/lib/iomgr/wakeup_fd_pipe.c \
+    src/core/lib/iomgr/wakeup_fd_posix.c \
+    src/core/lib/iomgr/workqueue_uv.c \
+    src/core/lib/iomgr/workqueue_windows.c \
+    src/core/lib/json/json.c \
+    src/core/lib/json/json_reader.c \
+    src/core/lib/json/json_string.c \
+    src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
+    src/core/lib/slice/percent_encoding.c \
+    src/core/lib/slice/slice.c \
+    src/core/lib/slice/slice_buffer.c \
+    src/core/lib/slice/slice_hash_table.c \
+    src/core/lib/slice/slice_intern.c \
+    src/core/lib/slice/slice_string_helpers.c \
+    src/core/lib/surface/alarm.c \
+    src/core/lib/surface/api_trace.c \
+    src/core/lib/surface/byte_buffer.c \
+    src/core/lib/surface/byte_buffer_reader.c \
+    src/core/lib/surface/call.c \
+    src/core/lib/surface/call_details.c \
+    src/core/lib/surface/call_log_batch.c \
+    src/core/lib/surface/channel.c \
+    src/core/lib/surface/channel_init.c \
+    src/core/lib/surface/channel_ping.c \
+    src/core/lib/surface/channel_stack_type.c \
+    src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
+    src/core/lib/surface/event_string.c \
+    src/core/lib/surface/lame_client.c \
+    src/core/lib/surface/metadata_array.c \
+    src/core/lib/surface/server.c \
+    src/core/lib/surface/validate_metadata.c \
+    src/core/lib/surface/version.c \
+    src/core/lib/transport/bdp_estimator.c \
+    src/core/lib/transport/byte_stream.c \
+    src/core/lib/transport/connectivity_state.c \
+    src/core/lib/transport/error_utils.c \
+    src/core/lib/transport/metadata.c \
+    src/core/lib/transport/metadata_batch.c \
+    src/core/lib/transport/pid_controller.c \
+    src/core/lib/transport/service_config.c \
+    src/core/lib/transport/static_metadata.c \
+    src/core/lib/transport/status_conversion.c \
+    src/core/lib/transport/timeout_encoding.c \
+    src/core/lib/transport/transport.c \
+    src/core/lib/transport/transport_op_string.c \
+    third_party/nanopb/pb_common.c \
+    third_party/nanopb/pb_decode.c \
+    third_party/nanopb/pb_encode.c \
     src/cpp/codegen/codegen_init.cc \
 
 PUBLIC_HEADERS_CXX += \
@@ -4075,6 +4275,7 @@ PUBLIC_HEADERS_CXX += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -4083,11 +4284,20 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
+    include/grpc/byte_buffer.h \
+    include/grpc/byte_buffer_reader.h \
+    include/grpc/compression.h \
+    include/grpc/grpc.h \
+    include/grpc/grpc_posix.h \
+    include/grpc/grpc_security_constants.h \
+    include/grpc/load_reporting.h \
+    include/grpc/slice.h \
+    include/grpc/slice_buffer.h \
+    include/grpc/status.h \
     include/grpc++/impl/codegen/proto_utils.h \
     include/grpc++/impl/codegen/config_protobuf.h \
 
@@ -4114,11 +4324,11 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBGRPC++_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBGRPC++_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++.a
 endif
@@ -4126,18 +4336,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
 	$(E) "[LD]      Linking $@"
 	$(Q) mkdir -p `dirname $@`
-	$(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) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc$(SHARED_VERSION_CORE)-dll
+	$(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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc$(SHARED_VERSION_CORE)-dll -lgpr$(SHARED_VERSION_CORE)-dll
 else
-$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_OBJS)  $(ZLIB_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/libgrpc.$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgpr.$(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_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc -lgpr
 else
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc -lgpr
 	$(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
@@ -4192,30 +4402,6 @@ LIBGRPC++_CRONET_SRC = \
     src/cpp/util/status.cc \
     src/cpp/util/string_ref.cc \
     src/cpp/util/time_cc.cc \
-    src/cpp/codegen/codegen_init.cc \
-    src/core/ext/transport/chttp2/client/insecure/channel_create.c \
-    src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c \
-    src/core/ext/transport/chttp2/client/chttp2_connector.c \
-    src/core/ext/transport/chttp2/transport/bin_decoder.c \
-    src/core/ext/transport/chttp2/transport/bin_encoder.c \
-    src/core/ext/transport/chttp2/transport/chttp2_plugin.c \
-    src/core/ext/transport/chttp2/transport/chttp2_transport.c \
-    src/core/ext/transport/chttp2/transport/frame_data.c \
-    src/core/ext/transport/chttp2/transport/frame_goaway.c \
-    src/core/ext/transport/chttp2/transport/frame_ping.c \
-    src/core/ext/transport/chttp2/transport/frame_rst_stream.c \
-    src/core/ext/transport/chttp2/transport/frame_settings.c \
-    src/core/ext/transport/chttp2/transport/frame_window_update.c \
-    src/core/ext/transport/chttp2/transport/hpack_encoder.c \
-    src/core/ext/transport/chttp2/transport/hpack_parser.c \
-    src/core/ext/transport/chttp2/transport/hpack_table.c \
-    src/core/ext/transport/chttp2/transport/huffsyms.c \
-    src/core/ext/transport/chttp2/transport/incoming_metadata.c \
-    src/core/ext/transport/chttp2/transport/parsing.c \
-    src/core/ext/transport/chttp2/transport/stream_lists.c \
-    src/core/ext/transport/chttp2/transport/stream_map.c \
-    src/core/ext/transport/chttp2/transport/varint.c \
-    src/core/ext/transport/chttp2/transport/writing.c \
     src/core/lib/channel/channel_args.c \
     src/core/lib/channel/channel_stack.c \
     src/core/lib/channel/channel_stack_builder.c \
@@ -4227,6 +4413,7 @@ LIBGRPC++_CRONET_SRC = \
     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/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -4263,6 +4450,7 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -4300,6 +4488,7 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -4318,6 +4507,7 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -4337,6 +4527,33 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/transport/timeout_encoding.c \
     src/core/lib/transport/transport.c \
     src/core/lib/transport/transport_op_string.c \
+    third_party/nanopb/pb_common.c \
+    third_party/nanopb/pb_decode.c \
+    third_party/nanopb/pb_encode.c \
+    src/cpp/codegen/codegen_init.cc \
+    src/core/ext/transport/chttp2/client/insecure/channel_create.c \
+    src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c \
+    src/core/ext/transport/chttp2/client/chttp2_connector.c \
+    src/core/ext/transport/chttp2/transport/bin_decoder.c \
+    src/core/ext/transport/chttp2/transport/bin_encoder.c \
+    src/core/ext/transport/chttp2/transport/chttp2_plugin.c \
+    src/core/ext/transport/chttp2/transport/chttp2_transport.c \
+    src/core/ext/transport/chttp2/transport/frame_data.c \
+    src/core/ext/transport/chttp2/transport/frame_goaway.c \
+    src/core/ext/transport/chttp2/transport/frame_ping.c \
+    src/core/ext/transport/chttp2/transport/frame_rst_stream.c \
+    src/core/ext/transport/chttp2/transport/frame_settings.c \
+    src/core/ext/transport/chttp2/transport/frame_window_update.c \
+    src/core/ext/transport/chttp2/transport/hpack_encoder.c \
+    src/core/ext/transport/chttp2/transport/hpack_parser.c \
+    src/core/ext/transport/chttp2/transport/hpack_table.c \
+    src/core/ext/transport/chttp2/transport/huffsyms.c \
+    src/core/ext/transport/chttp2/transport/incoming_metadata.c \
+    src/core/ext/transport/chttp2/transport/parsing.c \
+    src/core/ext/transport/chttp2/transport/stream_lists.c \
+    src/core/ext/transport/chttp2/transport/stream_map.c \
+    src/core/ext/transport/chttp2/transport/varint.c \
+    src/core/ext/transport/chttp2/transport/writing.c \
     src/core/ext/transport/chttp2/alpn/alpn.c \
     src/core/ext/client_channel/channel_connectivity.c \
     src/core/ext/client_channel/client_channel.c \
@@ -4375,9 +4592,6 @@ LIBGRPC++_CRONET_SRC = \
     src/core/ext/census/resource.c \
     src/core/ext/census/trace_context.c \
     src/core/ext/census/tracing.c \
-    third_party/nanopb/pb_common.c \
-    third_party/nanopb/pb_decode.c \
-    third_party/nanopb/pb_encode.c \
 
 PUBLIC_HEADERS_CXX += \
     include/grpc++/alarm.h \
@@ -4461,6 +4675,7 @@ PUBLIC_HEADERS_CXX += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -4469,7 +4684,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -4509,11 +4723,11 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a $(LIBGRPC++_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a $(LIBGRPC++_CRONET_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS)  $(OPENSSL_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_cronet.a
 endif
@@ -4521,18 +4735,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_cronet$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(CARES_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)/$(CONFIG) -shared -Wl,--output-def=$(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) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_cronet$(SHARED_VERSION_CORE)-dll
+	$(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) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr$(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) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_CRONET_OBJS)  $(ZLIB_DEP) $(CARES_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_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -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) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_cronet
 else
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_cronet.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_cronet
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_cronet.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_cronet$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_CRONET_OBJS) $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_cronet
 	$(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
@@ -4577,7 +4791,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_PROTO_REFLECTION_DESC_DB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_PROTO_REFLECTION_DESC_DB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_proto_reflection_desc_db.a
@@ -4632,7 +4846,7 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_reflection$(SHARED_VERSION_CPP).$(SHA
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_reflection.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_REFLECTION_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_reflection.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_REFLECTION_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_reflection.a
@@ -4644,18 +4858,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/grpc++$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(CARES_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)/$(CONFIG) -shared -Wl,--output-def=$(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) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc++$(SHARED_VERSION_CPP)-dll
+	$(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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc++$(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) $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_REFLECTION_OBJS)  $(ZLIB_DEP) $(CARES_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_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc++
 else
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_reflection.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc++
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_reflection.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_reflection$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_REFLECTION_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgrpc++
 	$(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
@@ -4700,7 +4914,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_TEST_CONFIG_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_TEST_CONFIG_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
@@ -4773,6 +4987,7 @@ PUBLIC_HEADERS_CXX += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -4781,7 +4996,6 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
@@ -4812,7 +5026,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_TEST_UTIL_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC++_TEST_UTIL_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a
@@ -4879,6 +5093,134 @@ LIBGRPC++_UNSECURE_SRC = \
     src/cpp/util/status.cc \
     src/cpp/util/string_ref.cc \
     src/cpp/util/time_cc.cc \
+    src/core/lib/channel/channel_args.c \
+    src/core/lib/channel/channel_stack.c \
+    src/core/lib/channel/channel_stack_builder.c \
+    src/core/lib/channel/compress_filter.c \
+    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/max_age_filter.c \
+    src/core/lib/channel/message_size_filter.c \
+    src/core/lib/compression/compression.c \
+    src/core/lib/compression/message_compress.c \
+    src/core/lib/debug/trace.c \
+    src/core/lib/http/format_request.c \
+    src/core/lib/http/httpcli.c \
+    src/core/lib/http/parser.c \
+    src/core/lib/iomgr/closure.c \
+    src/core/lib/iomgr/combiner.c \
+    src/core/lib/iomgr/endpoint.c \
+    src/core/lib/iomgr/endpoint_pair_posix.c \
+    src/core/lib/iomgr/endpoint_pair_uv.c \
+    src/core/lib/iomgr/endpoint_pair_windows.c \
+    src/core/lib/iomgr/error.c \
+    src/core/lib/iomgr/ev_epoll_linux.c \
+    src/core/lib/iomgr/ev_poll_posix.c \
+    src/core/lib/iomgr/ev_posix.c \
+    src/core/lib/iomgr/exec_ctx.c \
+    src/core/lib/iomgr/executor.c \
+    src/core/lib/iomgr/iocp_windows.c \
+    src/core/lib/iomgr/iomgr.c \
+    src/core/lib/iomgr/iomgr_posix.c \
+    src/core/lib/iomgr/iomgr_uv.c \
+    src/core/lib/iomgr/iomgr_windows.c \
+    src/core/lib/iomgr/load_file.c \
+    src/core/lib/iomgr/network_status_tracker.c \
+    src/core/lib/iomgr/polling_entity.c \
+    src/core/lib/iomgr/pollset_set_uv.c \
+    src/core/lib/iomgr/pollset_set_windows.c \
+    src/core/lib/iomgr/pollset_uv.c \
+    src/core/lib/iomgr/pollset_windows.c \
+    src/core/lib/iomgr/resolve_address_posix.c \
+    src/core/lib/iomgr/resolve_address_uv.c \
+    src/core/lib/iomgr/resolve_address_windows.c \
+    src/core/lib/iomgr/resource_quota.c \
+    src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
+    src/core/lib/iomgr/socket_mutator.c \
+    src/core/lib/iomgr/socket_utils_common_posix.c \
+    src/core/lib/iomgr/socket_utils_linux.c \
+    src/core/lib/iomgr/socket_utils_posix.c \
+    src/core/lib/iomgr/socket_utils_uv.c \
+    src/core/lib/iomgr/socket_utils_windows.c \
+    src/core/lib/iomgr/socket_windows.c \
+    src/core/lib/iomgr/tcp_client_posix.c \
+    src/core/lib/iomgr/tcp_client_uv.c \
+    src/core/lib/iomgr/tcp_client_windows.c \
+    src/core/lib/iomgr/tcp_posix.c \
+    src/core/lib/iomgr/tcp_server_posix.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_common.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c \
+    src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c \
+    src/core/lib/iomgr/tcp_server_uv.c \
+    src/core/lib/iomgr/tcp_server_windows.c \
+    src/core/lib/iomgr/tcp_uv.c \
+    src/core/lib/iomgr/tcp_windows.c \
+    src/core/lib/iomgr/time_averaged_stats.c \
+    src/core/lib/iomgr/timer_generic.c \
+    src/core/lib/iomgr/timer_heap.c \
+    src/core/lib/iomgr/timer_uv.c \
+    src/core/lib/iomgr/udp_server.c \
+    src/core/lib/iomgr/unix_sockets_posix.c \
+    src/core/lib/iomgr/unix_sockets_posix_noop.c \
+    src/core/lib/iomgr/wakeup_fd_cv.c \
+    src/core/lib/iomgr/wakeup_fd_eventfd.c \
+    src/core/lib/iomgr/wakeup_fd_nospecial.c \
+    src/core/lib/iomgr/wakeup_fd_pipe.c \
+    src/core/lib/iomgr/wakeup_fd_posix.c \
+    src/core/lib/iomgr/workqueue_uv.c \
+    src/core/lib/iomgr/workqueue_windows.c \
+    src/core/lib/json/json.c \
+    src/core/lib/json/json_reader.c \
+    src/core/lib/json/json_string.c \
+    src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
+    src/core/lib/slice/percent_encoding.c \
+    src/core/lib/slice/slice.c \
+    src/core/lib/slice/slice_buffer.c \
+    src/core/lib/slice/slice_hash_table.c \
+    src/core/lib/slice/slice_intern.c \
+    src/core/lib/slice/slice_string_helpers.c \
+    src/core/lib/surface/alarm.c \
+    src/core/lib/surface/api_trace.c \
+    src/core/lib/surface/byte_buffer.c \
+    src/core/lib/surface/byte_buffer_reader.c \
+    src/core/lib/surface/call.c \
+    src/core/lib/surface/call_details.c \
+    src/core/lib/surface/call_log_batch.c \
+    src/core/lib/surface/channel.c \
+    src/core/lib/surface/channel_init.c \
+    src/core/lib/surface/channel_ping.c \
+    src/core/lib/surface/channel_stack_type.c \
+    src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
+    src/core/lib/surface/event_string.c \
+    src/core/lib/surface/lame_client.c \
+    src/core/lib/surface/metadata_array.c \
+    src/core/lib/surface/server.c \
+    src/core/lib/surface/validate_metadata.c \
+    src/core/lib/surface/version.c \
+    src/core/lib/transport/bdp_estimator.c \
+    src/core/lib/transport/byte_stream.c \
+    src/core/lib/transport/connectivity_state.c \
+    src/core/lib/transport/error_utils.c \
+    src/core/lib/transport/metadata.c \
+    src/core/lib/transport/metadata_batch.c \
+    src/core/lib/transport/pid_controller.c \
+    src/core/lib/transport/service_config.c \
+    src/core/lib/transport/static_metadata.c \
+    src/core/lib/transport/status_conversion.c \
+    src/core/lib/transport/timeout_encoding.c \
+    src/core/lib/transport/transport.c \
+    src/core/lib/transport/transport_op_string.c \
+    third_party/nanopb/pb_common.c \
+    third_party/nanopb/pb_decode.c \
+    third_party/nanopb/pb_encode.c \
     src/cpp/codegen/codegen_init.cc \
 
 PUBLIC_HEADERS_CXX += \
@@ -4963,6 +5305,7 @@ PUBLIC_HEADERS_CXX += \
     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/slice.h \
     include/grpc/impl/codegen/status.h \
     include/grpc/impl/codegen/atm.h \
     include/grpc/impl/codegen/atm_gcc_atomic.h \
@@ -4971,11 +5314,20 @@ PUBLIC_HEADERS_CXX += \
     include/grpc/impl/codegen/gpr_slice.h \
     include/grpc/impl/codegen/gpr_types.h \
     include/grpc/impl/codegen/port_platform.h \
-    include/grpc/impl/codegen/slice.h \
     include/grpc/impl/codegen/sync.h \
     include/grpc/impl/codegen/sync_generic.h \
     include/grpc/impl/codegen/sync_posix.h \
     include/grpc/impl/codegen/sync_windows.h \
+    include/grpc/byte_buffer.h \
+    include/grpc/byte_buffer_reader.h \
+    include/grpc/compression.h \
+    include/grpc/grpc.h \
+    include/grpc/grpc_posix.h \
+    include/grpc/grpc_security_constants.h \
+    include/grpc/load_reporting.h \
+    include/grpc/slice.h \
+    include/grpc/slice_buffer.h \
+    include/grpc/status.h \
 
 LIBGRPC++_UNSECURE_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC++_UNSECURE_SRC))))
 
@@ -4990,11 +5342,11 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARE
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBGRPC++_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBGRPC++_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
-	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBGRPC++_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS) 
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a $(LIBGRPC++_UNSECURE_OBJS)  $(LIBGPR_OBJS)  $(ZLIB_MERGE_OBJS)  $(CARES_MERGE_OBJS) 
 ifeq ($(SYSTEM),Darwin)
 	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure.a
 endif
@@ -5002,18 +5354,18 @@ endif
 
 
 ifeq ($(SYSTEM),MINGW32)
-$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(PROTOBUF_DEP) $(LIBDIR)/$(CONFIG)/gpr$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/grpc_unsecure$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE)
+$(LIBDIR)/$(CONFIG)/grpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(CARES_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)/$(CONFIG) -shared -Wl,--output-def=$(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) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr$(SHARED_VERSION_CORE)-dll -lgrpc_unsecure$(SHARED_VERSION_CORE)-dll
+	$(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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr$(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.$(SHARED_EXT_CORE)
+$(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP): $(LIBGRPC++_UNSECURE_OBJS)  $(ZLIB_DEP) $(CARES_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_CPP).$(SHARED_EXT_CPP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -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) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_unsecure
 else
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_unsecure.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(ZLIB_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_unsecure
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc++_unsecure.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc++_unsecure$(SHARED_VERSION_CPP).$(SHARED_EXT_CPP) $(LIBGRPC++_UNSECURE_OBJS) $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) -lgpr -lgrpc_unsecure
 	$(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
@@ -5033,6 +5385,7 @@ PUBLIC_HEADERS_CXX += \
 
 LIBGRPC_BENCHMARK_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC_BENCHMARK_SRC))))
 
+$(LIBGRPC_BENCHMARK_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 
 ifeq ($(NO_SECURE),true)
 
@@ -5052,7 +5405,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC_BENCHMARK_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC_BENCHMARK_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a
@@ -5107,7 +5460,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBGRPC_CLI_LIBS_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBGRPC_CLI_LIBS_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_cli_libs.a
@@ -5159,7 +5512,7 @@ $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBGRPC_PLUGIN_SUPPORT_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBGRPC_PLUGIN_SUPPORT_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_plugin_support.a
@@ -5207,7 +5560,7 @@ $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBHTTP2_CLIENT_MAIN_OBJS) 
+$(LIBDIR)/$(CONFIG)/libhttp2_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBHTTP2_CLIENT_MAIN_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libhttp2_client_main.a
@@ -5258,7 +5611,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libinterop_client_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_CLIENT_HELPER_OBJS) 
+$(LIBDIR)/$(CONFIG)/libinterop_client_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_CLIENT_HELPER_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_client_helper.a
@@ -5312,7 +5665,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_client_main.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libinterop_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_CLIENT_MAIN_OBJS) 
+$(LIBDIR)/$(CONFIG)/libinterop_client_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_CLIENT_MAIN_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_client_main.a
@@ -5363,7 +5716,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libinterop_server_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_HELPER_OBJS) 
+$(LIBDIR)/$(CONFIG)/libinterop_server_helper.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_HELPER_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_server_helper.a
@@ -5415,7 +5768,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libinterop_server_lib.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libinterop_server_lib.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_server_lib.a
@@ -5465,7 +5818,7 @@ $(LIBDIR)/$(CONFIG)/libinterop_server_main.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libinterop_server_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_MAIN_OBJS) 
+$(LIBDIR)/$(CONFIG)/libinterop_server_main.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBINTEROP_SERVER_MAIN_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libinterop_server_main.a
@@ -5494,6 +5847,7 @@ LIBQPS_SRC = \
     $(GENDIR)/src/proto/grpc/testing/stats.pb.cc $(GENDIR)/src/proto/grpc/testing/stats.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc \
+    test/cpp/qps/benchmark_config.cc \
     test/cpp/qps/client_async.cc \
     test/cpp/qps/client_sync.cc \
     test/cpp/qps/driver.cc \
@@ -5503,7 +5857,6 @@ LIBQPS_SRC = \
     test/cpp/qps/server_async.cc \
     test/cpp/qps/server_sync.cc \
     test/cpp/qps/usage_timer.cc \
-    test/cpp/util/benchmark_config.cc \
 
 PUBLIC_HEADERS_CXX += \
 
@@ -5528,7 +5881,7 @@ $(LIBDIR)/$(CONFIG)/libqps.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libqps.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(PROTOBUF_DEP) $(LIBQPS_OBJS) 
+$(LIBDIR)/$(CONFIG)/libqps.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(PROTOBUF_DEP) $(LIBQPS_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libqps.a
@@ -5549,6 +5902,7 @@ ifneq ($(NO_DEPS),true)
 -include $(LIBQPS_OBJS:.o=.dep)
 endif
 endif
+$(OBJDIR)/$(CONFIG)/test/cpp/qps/benchmark_config.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/client_async.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/client_sync.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/driver.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
@@ -5558,7 +5912,6 @@ $(OBJDIR)/$(CONFIG)/test/cpp/qps/report.o: $(GENDIR)/src/proto/grpc/testing/mess
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/server_async.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/server_sync.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/qps/usage_timer.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/benchmark_config.o: $(GENDIR)/src/proto/grpc/testing/messages.pb.cc $(GENDIR)/src/proto/grpc/testing/messages.grpc.pb.cc $(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 $(GENDIR)/src/proto/grpc/testing/control.pb.cc $(GENDIR)/src/proto/grpc/testing/control.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/services.pb.cc $(GENDIR)/src/proto/grpc/testing/services.grpc.pb.cc
 
 
 LIBGRPC_CSHARP_EXT_SRC = \
@@ -5580,7 +5933,7 @@ $(LIBDIR)/$(CONFIG)/$(SHARED_PREFIX)grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SH
 else
 
 
-$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBGRPC_CSHARP_EXT_OBJS) 
+$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBGRPC_CSHARP_EXT_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext.a
@@ -5592,18 +5945,18 @@ endif
 
 
 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 $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/grpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(CARES_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 -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) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-$(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 $(OPENSSL_DEP)
+$(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP): $(LIBGRPC_CSHARP_EXT_OBJS)  $(ZLIB_DEP) $(CARES_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_CSHARP).$(SHARED_EXT_CSHARP) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(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) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 else
-	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_csharp_ext.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(LDLIBS)
+	$(Q) $(LD) $(LDFLAGS) $(if $(subst Linux,,$(SYSTEM)),,-Wl$(comma)-wrap$(comma)memcpy) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc_csharp_ext.so.3 -o $(LIBDIR)/$(CONFIG)/libgrpc_csharp_ext$(SHARED_VERSION_CSHARP).$(SHARED_EXT_CSHARP) $(LIBGRPC_CSHARP_EXT_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr.a $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS) $(LDLIBS)
 	$(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
@@ -5931,7 +6284,7 @@ LIBBORINGSSL_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename
 $(LIBBORINGSSL_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl.a: $(ZLIB_DEP)  $(LIBBORINGSSL_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl.a
@@ -5969,7 +6322,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_test_util.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_TEST_UTIL_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_test_util.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_TEST_UTIL_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_test_util.a
@@ -6007,7 +6360,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_AES_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_AES_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_aes_test_lib.a
@@ -6045,7 +6398,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ASN1_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ASN1_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_asn1_test_lib.a
@@ -6083,7 +6436,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BASE64_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BASE64_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_base64_test_lib.a
@@ -6121,7 +6474,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BIO_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BIO_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bio_test_lib.a
@@ -6159,7 +6512,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BN_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BN_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bn_test_lib.a
@@ -6197,7 +6550,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_BYTESTRING_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_bytestring_test_lib.a
@@ -6235,7 +6588,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_chacha_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_chacha_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CHACHA_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_chacha_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CHACHA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_chacha_test_lib.a
@@ -6273,7 +6626,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_AEAD_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_AEAD_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_aead_test_lib.a
@@ -6311,7 +6664,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CIPHER_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_cipher_test_lib.a
@@ -6349,7 +6702,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CMAC_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_CMAC_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_cmac_test_lib.a
@@ -6378,7 +6731,7 @@ LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(a
 $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_CONSTANT_TIME_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_constant_time_test_lib.a
@@ -6414,7 +6767,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ED25519_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ED25519_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ed25519_test_lib.a
@@ -6452,7 +6805,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_SPAKE25519_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_SPAKE25519_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_spake25519_test_lib.a
@@ -6490,7 +6843,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_X25519_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_X25519_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_x25519_test_lib.a
@@ -6528,7 +6881,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_DH_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_DH_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_dh_test_lib.a
@@ -6566,7 +6919,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_DIGEST_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_digest_test_lib.a
@@ -6595,7 +6948,7 @@ LIBBORINGSSL_DSA_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .
 $(LIBBORINGSSL_DSA_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_DSA_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_DSA_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_DSA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_dsa_test_lib.a
@@ -6631,7 +6984,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EC_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EC_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ec_test_lib.a
@@ -6660,7 +7013,7 @@ LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffi
 $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_EXAMPLE_MUL_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_example_mul_lib.a
@@ -6696,7 +7049,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDH_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDH_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ecdh_test_lib.a
@@ -6734,7 +7087,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_SIGN_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_SIGN_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_sign_test_lib.a
@@ -6772,7 +7125,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_test_lib.a
@@ -6810,7 +7163,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_VERIFY_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ECDSA_VERIFY_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ecdsa_verify_test_lib.a
@@ -6848,7 +7201,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ERR_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_ERR_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_err_test_lib.a
@@ -6886,7 +7239,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EVP_EXTRA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_evp_extra_test_lib.a
@@ -6924,7 +7277,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EVP_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_EVP_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_evp_test_lib.a
@@ -6962,7 +7315,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PBKDF_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pbkdf_test_lib.a
@@ -6991,7 +7344,7 @@ LIBBORINGSSL_HKDF_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix
 $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_HKDF_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_test_lib.a
@@ -7027,7 +7380,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_HMAC_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_HMAC_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_hmac_test_lib.a
@@ -7056,7 +7409,7 @@ LIBBORINGSSL_LHASH_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix
 $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_LHASH_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_lhash_test_lib.a
@@ -7092,7 +7445,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_GCM_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_GCM_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_gcm_test_lib.a
@@ -7130,7 +7483,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_newhope_statistical_test_lib.a: protobuf_dep_er
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_newhope_statistical_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_STATISTICAL_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_newhope_statistical_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_STATISTICAL_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_newhope_statistical_test_lib.a
@@ -7168,7 +7521,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_newhope_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_newhope_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_newhope_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_newhope_test_lib.a
@@ -7206,7 +7559,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_newhope_vectors_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_newhope_vectors_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_VECTORS_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_newhope_vectors_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_NEWHOPE_VECTORS_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_newhope_vectors_test_lib.a
@@ -7244,7 +7597,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_OBJ_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_OBJ_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_obj_test_lib.a
@@ -7282,7 +7635,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PKCS12_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs12_test_lib.a
@@ -7320,7 +7673,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_PKCS8_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs8_test_lib.a
@@ -7358,7 +7711,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_POLY1305_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_poly1305_test_lib.a
@@ -7387,7 +7740,7 @@ LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuf
 $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_REFCOUNT_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_refcount_test_lib.a
@@ -7423,7 +7776,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_RSA_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_RSA_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_rsa_test_lib.a
@@ -7452,7 +7805,7 @@ LIBBORINGSSL_THREAD_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffi
 $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_THREAD_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_thread_test_lib.a
@@ -7479,7 +7832,7 @@ LIBBORINGSSL_PKCS7_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix
 $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_PKCS7_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_pkcs7_test_lib.a
@@ -7515,7 +7868,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_X509_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_X509_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_x509_test_lib.a
@@ -7544,7 +7897,7 @@ LIBBORINGSSL_TAB_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .
 $(LIBBORINGSSL_TAB_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_TAB_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_TAB_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_TAB_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_tab_test_lib.a
@@ -7571,7 +7924,7 @@ LIBBORINGSSL_V3NAME_TEST_LIB_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffi
 $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
 $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
-$(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a: $(ZLIB_DEP)  $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBBORINGSSL_V3NAME_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_v3name_test_lib.a
@@ -7607,7 +7960,7 @@ $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_SSL_TEST_LIB_OBJS) 
+$(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBORINGSSL_SSL_TEST_LIB_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libboringssl_ssl_test_lib.a
@@ -7656,7 +8009,7 @@ $(LIBDIR)/$(CONFIG)/libbenchmark.a: protobuf_dep_error
 
 else
 
-$(LIBDIR)/$(CONFIG)/libbenchmark.a: $(ZLIB_DEP)  $(PROTOBUF_DEP) $(LIBBENCHMARK_OBJS) 
+$(LIBDIR)/$(CONFIG)/libbenchmark.a: $(ZLIB_DEP) $(CARES_DEP)  $(PROTOBUF_DEP) $(LIBBENCHMARK_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libbenchmark.a
@@ -7698,7 +8051,7 @@ LIBZ_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBZ_
 
 $(LIBZ_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-implicit-function-declaration $(W_NO_SHIFT_NEGATIVE_VALUE) -fvisibility=hidden
 
-$(LIBDIR)/$(CONFIG)/libz.a:  $(LIBZ_OBJS) 
+$(LIBDIR)/$(CONFIG)/libz.a: $(CARES_DEP)  $(LIBZ_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libz.a
@@ -7715,6 +8068,81 @@ ifneq ($(NO_DEPS),true)
 endif
 
 
+LIBARES_SRC = \
+    third_party/cares/cares/ares__close_sockets.c \
+    third_party/cares/cares/ares__get_hostent.c \
+    third_party/cares/cares/ares__read_line.c \
+    third_party/cares/cares/ares__timeval.c \
+    third_party/cares/cares/ares_cancel.c \
+    third_party/cares/cares/ares_create_query.c \
+    third_party/cares/cares/ares_data.c \
+    third_party/cares/cares/ares_destroy.c \
+    third_party/cares/cares/ares_expand_name.c \
+    third_party/cares/cares/ares_expand_string.c \
+    third_party/cares/cares/ares_fds.c \
+    third_party/cares/cares/ares_free_hostent.c \
+    third_party/cares/cares/ares_free_string.c \
+    third_party/cares/cares/ares_getenv.c \
+    third_party/cares/cares/ares_gethostbyaddr.c \
+    third_party/cares/cares/ares_gethostbyname.c \
+    third_party/cares/cares/ares_getnameinfo.c \
+    third_party/cares/cares/ares_getopt.c \
+    third_party/cares/cares/ares_getsock.c \
+    third_party/cares/cares/ares_init.c \
+    third_party/cares/cares/ares_library_init.c \
+    third_party/cares/cares/ares_llist.c \
+    third_party/cares/cares/ares_mkquery.c \
+    third_party/cares/cares/ares_nowarn.c \
+    third_party/cares/cares/ares_options.c \
+    third_party/cares/cares/ares_parse_a_reply.c \
+    third_party/cares/cares/ares_parse_aaaa_reply.c \
+    third_party/cares/cares/ares_parse_mx_reply.c \
+    third_party/cares/cares/ares_parse_naptr_reply.c \
+    third_party/cares/cares/ares_parse_ns_reply.c \
+    third_party/cares/cares/ares_parse_ptr_reply.c \
+    third_party/cares/cares/ares_parse_soa_reply.c \
+    third_party/cares/cares/ares_parse_srv_reply.c \
+    third_party/cares/cares/ares_parse_txt_reply.c \
+    third_party/cares/cares/ares_platform.c \
+    third_party/cares/cares/ares_process.c \
+    third_party/cares/cares/ares_query.c \
+    third_party/cares/cares/ares_search.c \
+    third_party/cares/cares/ares_send.c \
+    third_party/cares/cares/ares_strcasecmp.c \
+    third_party/cares/cares/ares_strdup.c \
+    third_party/cares/cares/ares_strerror.c \
+    third_party/cares/cares/ares_timeout.c \
+    third_party/cares/cares/ares_version.c \
+    third_party/cares/cares/ares_writev.c \
+    third_party/cares/cares/bitncmp.c \
+    third_party/cares/cares/inet_net_pton.c \
+    third_party/cares/cares/inet_ntop.c \
+    third_party/cares/cares/windows_port.c \
+
+PUBLIC_HEADERS_C += \
+
+LIBARES_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBARES_SRC))))
+
+$(LIBARES_OBJS): CPPFLAGS += -Ithird_party/cares -Ithird_party/cares/cares $(if $(subst Linux,,$(SYSTEM)),,-Ithird_party/cares/config_linux) $(if $(subst Darwin,,$(SYSTEM)),,-Ithird_party/cares/config_darwin) -fvisibility=hidden -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX -DHAVE_CONFIG_H
+$(LIBARES_OBJS): CFLAGS += -Wno-sign-conversion -Wno-invalid-source-encoding
+
+$(LIBDIR)/$(CONFIG)/libares.a: $(ZLIB_DEP)  $(LIBARES_OBJS) 
+	$(E) "[AR]      Creating $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libares.a
+	$(Q) $(AR) $(AROPTS) $(LIBDIR)/$(CONFIG)/libares.a $(LIBARES_OBJS) 
+ifeq ($(SYSTEM),Darwin)
+	$(Q) ranlib -no_warning_for_no_symbols $(LIBDIR)/$(CONFIG)/libares.a
+endif
+
+
+
+
+ifneq ($(NO_DEPS),true)
+-include $(LIBARES_OBJS:.o=.dep)
+endif
+
+
 LIBBAD_CLIENT_TEST_SRC = \
     test/core/bad_client/bad_client.c \
 
@@ -7733,7 +8161,7 @@ $(LIBDIR)/$(CONFIG)/libbad_client_test.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libbad_client_test.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBBAD_CLIENT_TEST_OBJS) 
+$(LIBDIR)/$(CONFIG)/libbad_client_test.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBBAD_CLIENT_TEST_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libbad_client_test.a
@@ -7772,7 +8200,7 @@ $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBBAD_SSL_TEST_SERVER_OBJS) 
+$(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBBAD_SSL_TEST_SERVER_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libbad_ssl_test_server.a
@@ -7823,6 +8251,8 @@ LIBEND2END_TESTS_SRC = \
     test/core/end2end/tests/large_metadata.c \
     test/core/end2end/tests/load_reporting_hook.c \
     test/core/end2end/tests/max_concurrent_streams.c \
+    test/core/end2end/tests/max_connection_age.c \
+    test/core/end2end/tests/max_connection_idle.c \
     test/core/end2end/tests/max_message_length.c \
     test/core/end2end/tests/negative_deadline.c \
     test/core/end2end/tests/network_status_change.c \
@@ -7862,7 +8292,7 @@ $(LIBDIR)/$(CONFIG)/libend2end_tests.a: openssl_dep_error
 else
 
 
-$(LIBDIR)/$(CONFIG)/libend2end_tests.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(LIBEND2END_TESTS_OBJS) 
+$(LIBDIR)/$(CONFIG)/libend2end_tests.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP) $(LIBEND2END_TESTS_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libend2end_tests.a
@@ -7912,6 +8342,8 @@ LIBEND2END_NOSEC_TESTS_SRC = \
     test/core/end2end/tests/large_metadata.c \
     test/core/end2end/tests/load_reporting_hook.c \
     test/core/end2end/tests/max_concurrent_streams.c \
+    test/core/end2end/tests/max_connection_age.c \
+    test/core/end2end/tests/max_connection_idle.c \
     test/core/end2end/tests/max_message_length.c \
     test/core/end2end/tests/negative_deadline.c \
     test/core/end2end/tests/network_status_change.c \
@@ -7941,7 +8373,7 @@ PUBLIC_HEADERS_C += \
 LIBEND2END_NOSEC_TESTS_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBEND2END_NOSEC_TESTS_SRC))))
 
 
-$(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a: $(ZLIB_DEP)  $(LIBEND2END_NOSEC_TESTS_OBJS) 
+$(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a: $(ZLIB_DEP) $(CARES_DEP)  $(LIBEND2END_NOSEC_TESTS_OBJS) 
 	$(E) "[AR]      Creating $@"
 	$(Q) mkdir -p `dirname $@`
 	$(Q) rm -f $(LIBDIR)/$(CONFIG)/libend2end_nosec_tests.a
@@ -9755,7 +10187,7 @@ endif
 
 
 GRPC_B64_TEST_SRC = \
-    test/core/security/b64_test.c \
+    test/core/slice/b64_test.c \
 
 GRPC_B64_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(GRPC_B64_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -9775,7 +10207,7 @@ $(BINDIR)/$(CONFIG)/grpc_b64_test: $(GRPC_B64_TEST_OBJS) $(LIBDIR)/$(CONFIG)/lib
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/security/b64_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+$(OBJDIR)/$(CONFIG)/test/core/slice/b64_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_grpc_b64_test: $(GRPC_B64_TEST_OBJS:.o=.dep)
 
@@ -12699,6 +13131,7 @@ endif
 
 endif
 
+$(BM_ARENA_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_arena.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_arena: $(BM_ARENA_OBJS:.o=.dep)
@@ -12742,6 +13175,7 @@ endif
 
 endif
 
+$(BM_CALL_CREATE_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_call_create.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_call_create: $(BM_CALL_CREATE_OBJS:.o=.dep)
@@ -12785,6 +13219,7 @@ endif
 
 endif
 
+$(BM_CHTTP2_HPACK_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_chttp2_hpack.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_chttp2_hpack: $(BM_CHTTP2_HPACK_OBJS:.o=.dep)
@@ -12828,6 +13263,7 @@ endif
 
 endif
 
+$(BM_CHTTP2_TRANSPORT_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_chttp2_transport.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_chttp2_transport: $(BM_CHTTP2_TRANSPORT_OBJS:.o=.dep)
@@ -12871,6 +13307,7 @@ endif
 
 endif
 
+$(BM_CLOSURE_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_closure.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_closure: $(BM_CLOSURE_OBJS:.o=.dep)
@@ -12914,6 +13351,7 @@ endif
 
 endif
 
+$(BM_CQ_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_cq.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_cq: $(BM_CQ_OBJS:.o=.dep)
@@ -12957,6 +13395,7 @@ endif
 
 endif
 
+$(BM_ERROR_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_error.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_error: $(BM_ERROR_OBJS:.o=.dep)
@@ -13000,6 +13439,7 @@ endif
 
 endif
 
+$(BM_FULLSTACK_STREAMING_PING_PONG_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_fullstack_streaming_ping_pong: $(BM_FULLSTACK_STREAMING_PING_PONG_OBJS:.o=.dep)
@@ -13043,6 +13483,7 @@ endif
 
 endif
 
+$(BM_FULLSTACK_STREAMING_PUMP_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_fullstack_streaming_pump: $(BM_FULLSTACK_STREAMING_PUMP_OBJS:.o=.dep)
@@ -13086,6 +13527,7 @@ endif
 
 endif
 
+$(BM_FULLSTACK_TRICKLE_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_trickle.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_fullstack_trickle: $(BM_FULLSTACK_TRICKLE_OBJS:.o=.dep)
@@ -13129,6 +13571,7 @@ endif
 
 endif
 
+$(BM_FULLSTACK_UNARY_PING_PONG_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_fullstack_unary_ping_pong: $(BM_FULLSTACK_UNARY_PING_PONG_OBJS:.o=.dep)
@@ -13172,6 +13615,7 @@ endif
 
 endif
 
+$(BM_METADATA_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_metadata.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_metadata: $(BM_METADATA_OBJS:.o=.dep)
@@ -13215,6 +13659,7 @@ endif
 
 endif
 
+$(BM_POLLSET_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/bm_pollset.o:  $(LIBDIR)/$(CONFIG)/libgrpc_benchmark.a $(LIBDIR)/$(CONFIG)/libbenchmark.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
 
 deps_bm_pollset: $(BM_POLLSET_OBJS:.o=.dep)
@@ -14745,6 +15190,7 @@ endif
 
 endif
 
+$(NOOP-BENCHMARK_OBJS): CPPFLAGS += -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
 $(OBJDIR)/$(CONFIG)/test/cpp/microbenchmarks/noop-benchmark.o:  $(LIBDIR)/$(CONFIG)/libbenchmark.a
 
 deps_noop-benchmark: $(NOOP-BENCHMARK_OBJS:.o=.dep)
@@ -15608,7 +16054,6 @@ STRESS_TEST_SRC = \
     test/cpp/interop/interop_client.cc \
     test/cpp/interop/stress_interop_client.cc \
     test/cpp/interop/stress_test.cc \
-    test/cpp/util/create_test_channel.cc \
     test/cpp/util/metrics_server.cc \
 
 STRESS_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(STRESS_TEST_SRC))))
@@ -15654,8 +16099,6 @@ $(OBJDIR)/$(CONFIG)/test/cpp/interop/stress_interop_client.o:  $(LIBDIR)/$(CONFI
 
 $(OBJDIR)/$(CONFIG)/test/cpp/interop/stress_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
-$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
-
 $(OBJDIR)/$(CONFIG)/test/cpp/util/metrics_server.o:  $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_config.a
 
 deps_stress_test: $(STRESS_TEST_OBJS:.o=.dep)
@@ -15668,7 +16111,6 @@ endif
 $(OBJDIR)/$(CONFIG)/test/cpp/interop/interop_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/metrics.pb.cc $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/interop/stress_interop_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/metrics.pb.cc $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/interop/stress_test.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/metrics.pb.cc $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.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/metrics.pb.cc $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
 $(OBJDIR)/$(CONFIG)/test/cpp/util/metrics_server.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/metrics.pb.cc $(GENDIR)/src/proto/grpc/testing/metrics.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/test.pb.cc $(GENDIR)/src/proto/grpc/testing/test.grpc.pb.cc
 
 
@@ -15861,6 +16303,8 @@ $(BINDIR)/$(CONFIG)/boringssl_aes_test:  $(LIBDIR)/$(CONFIG)/libboringssl_aes_te
 
 endif
 
+$(BORINGSSL_AES_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_AES_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -15888,6 +16332,8 @@ $(BINDIR)/$(CONFIG)/boringssl_asn1_test:  $(LIBDIR)/$(CONFIG)/libboringssl_asn1_
 
 endif
 
+$(BORINGSSL_ASN1_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ASN1_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -15915,6 +16361,8 @@ $(BINDIR)/$(CONFIG)/boringssl_base64_test:  $(LIBDIR)/$(CONFIG)/libboringssl_bas
 
 endif
 
+$(BORINGSSL_BASE64_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_BASE64_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -15942,6 +16390,8 @@ $(BINDIR)/$(CONFIG)/boringssl_bio_test:  $(LIBDIR)/$(CONFIG)/libboringssl_bio_te
 
 endif
 
+$(BORINGSSL_BIO_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_BIO_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -15969,6 +16419,8 @@ $(BINDIR)/$(CONFIG)/boringssl_bn_test:  $(LIBDIR)/$(CONFIG)/libboringssl_bn_test
 
 endif
 
+$(BORINGSSL_BN_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_BN_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -15996,6 +16448,8 @@ $(BINDIR)/$(CONFIG)/boringssl_bytestring_test:  $(LIBDIR)/$(CONFIG)/libboringssl
 
 endif
 
+$(BORINGSSL_BYTESTRING_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_BYTESTRING_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16023,6 +16477,8 @@ $(BINDIR)/$(CONFIG)/boringssl_chacha_test:  $(LIBDIR)/$(CONFIG)/libboringssl_cha
 
 endif
 
+$(BORINGSSL_CHACHA_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_CHACHA_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16050,6 +16506,8 @@ $(BINDIR)/$(CONFIG)/boringssl_aead_test:  $(LIBDIR)/$(CONFIG)/libboringssl_aead_
 
 endif
 
+$(BORINGSSL_AEAD_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_AEAD_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16077,6 +16535,8 @@ $(BINDIR)/$(CONFIG)/boringssl_cipher_test:  $(LIBDIR)/$(CONFIG)/libboringssl_cip
 
 endif
 
+$(BORINGSSL_CIPHER_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_CIPHER_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16104,6 +16564,8 @@ $(BINDIR)/$(CONFIG)/boringssl_cmac_test:  $(LIBDIR)/$(CONFIG)/libboringssl_cmac_
 
 endif
 
+$(BORINGSSL_CMAC_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_CMAC_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16131,6 +16593,8 @@ $(BINDIR)/$(CONFIG)/boringssl_constant_time_test:  $(LIBDIR)/$(CONFIG)/libboring
 
 endif
 
+$(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_CONSTANT_TIME_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16158,6 +16622,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ed25519_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ed
 
 endif
 
+$(BORINGSSL_ED25519_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ED25519_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16185,6 +16651,8 @@ $(BINDIR)/$(CONFIG)/boringssl_spake25519_test:  $(LIBDIR)/$(CONFIG)/libboringssl
 
 endif
 
+$(BORINGSSL_SPAKE25519_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_SPAKE25519_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16212,6 +16680,8 @@ $(BINDIR)/$(CONFIG)/boringssl_x25519_test:  $(LIBDIR)/$(CONFIG)/libboringssl_x25
 
 endif
 
+$(BORINGSSL_X25519_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_X25519_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16239,6 +16709,8 @@ $(BINDIR)/$(CONFIG)/boringssl_dh_test:  $(LIBDIR)/$(CONFIG)/libboringssl_dh_test
 
 endif
 
+$(BORINGSSL_DH_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_DH_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16266,6 +16738,8 @@ $(BINDIR)/$(CONFIG)/boringssl_digest_test:  $(LIBDIR)/$(CONFIG)/libboringssl_dig
 
 endif
 
+$(BORINGSSL_DIGEST_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_DIGEST_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16293,6 +16767,8 @@ $(BINDIR)/$(CONFIG)/boringssl_dsa_test:  $(LIBDIR)/$(CONFIG)/libboringssl_dsa_te
 
 endif
 
+$(BORINGSSL_DSA_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_DSA_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16320,6 +16796,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ec_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ec_test
 
 endif
 
+$(BORINGSSL_EC_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_EC_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16347,6 +16825,8 @@ $(BINDIR)/$(CONFIG)/boringssl_example_mul:  $(LIBDIR)/$(CONFIG)/libboringssl_exa
 
 endif
 
+$(BORINGSSL_EXAMPLE_MUL_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_EXAMPLE_MUL_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16374,6 +16854,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ecdh_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ecdh_
 
 endif
 
+$(BORINGSSL_ECDH_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ECDH_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16401,6 +16883,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ecdsa_sign_test:  $(LIBDIR)/$(CONFIG)/libboringssl
 
 endif
 
+$(BORINGSSL_ECDSA_SIGN_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ECDSA_SIGN_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16428,6 +16912,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ecdsa_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ecds
 
 endif
 
+$(BORINGSSL_ECDSA_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ECDSA_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16455,6 +16941,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ecdsa_verify_test:  $(LIBDIR)/$(CONFIG)/libborings
 
 endif
 
+$(BORINGSSL_ECDSA_VERIFY_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ECDSA_VERIFY_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16482,6 +16970,8 @@ $(BINDIR)/$(CONFIG)/boringssl_err_test:  $(LIBDIR)/$(CONFIG)/libboringssl_err_te
 
 endif
 
+$(BORINGSSL_ERR_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_ERR_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16509,6 +16999,8 @@ $(BINDIR)/$(CONFIG)/boringssl_evp_extra_test:  $(LIBDIR)/$(CONFIG)/libboringssl_
 
 endif
 
+$(BORINGSSL_EVP_EXTRA_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_EVP_EXTRA_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16536,6 +17028,8 @@ $(BINDIR)/$(CONFIG)/boringssl_evp_test:  $(LIBDIR)/$(CONFIG)/libboringssl_evp_te
 
 endif
 
+$(BORINGSSL_EVP_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_EVP_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16563,6 +17057,8 @@ $(BINDIR)/$(CONFIG)/boringssl_pbkdf_test:  $(LIBDIR)/$(CONFIG)/libboringssl_pbkd
 
 endif
 
+$(BORINGSSL_PBKDF_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_PBKDF_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16590,6 +17086,8 @@ $(BINDIR)/$(CONFIG)/boringssl_hkdf_test:  $(LIBDIR)/$(CONFIG)/libboringssl_hkdf_
 
 endif
 
+$(BORINGSSL_HKDF_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_HKDF_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16617,6 +17115,8 @@ $(BINDIR)/$(CONFIG)/boringssl_hmac_test:  $(LIBDIR)/$(CONFIG)/libboringssl_hmac_
 
 endif
 
+$(BORINGSSL_HMAC_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_HMAC_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16644,6 +17144,8 @@ $(BINDIR)/$(CONFIG)/boringssl_lhash_test:  $(LIBDIR)/$(CONFIG)/libboringssl_lhas
 
 endif
 
+$(BORINGSSL_LHASH_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_LHASH_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16671,6 +17173,8 @@ $(BINDIR)/$(CONFIG)/boringssl_gcm_test:  $(LIBDIR)/$(CONFIG)/libboringssl_gcm_te
 
 endif
 
+$(BORINGSSL_GCM_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_GCM_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16698,6 +17202,8 @@ $(BINDIR)/$(CONFIG)/boringssl_newhope_statistical_test:  $(LIBDIR)/$(CONFIG)/lib
 
 endif
 
+$(BORINGSSL_NEWHOPE_STATISTICAL_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_NEWHOPE_STATISTICAL_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16725,6 +17231,8 @@ $(BINDIR)/$(CONFIG)/boringssl_newhope_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ne
 
 endif
 
+$(BORINGSSL_NEWHOPE_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_NEWHOPE_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16752,6 +17260,8 @@ $(BINDIR)/$(CONFIG)/boringssl_newhope_vectors_test:  $(LIBDIR)/$(CONFIG)/libbori
 
 endif
 
+$(BORINGSSL_NEWHOPE_VECTORS_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_NEWHOPE_VECTORS_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16779,6 +17289,8 @@ $(BINDIR)/$(CONFIG)/boringssl_obj_test:  $(LIBDIR)/$(CONFIG)/libboringssl_obj_te
 
 endif
 
+$(BORINGSSL_OBJ_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_OBJ_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16806,6 +17318,8 @@ $(BINDIR)/$(CONFIG)/boringssl_pkcs12_test:  $(LIBDIR)/$(CONFIG)/libboringssl_pkc
 
 endif
 
+$(BORINGSSL_PKCS12_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_PKCS12_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16833,6 +17347,8 @@ $(BINDIR)/$(CONFIG)/boringssl_pkcs8_test:  $(LIBDIR)/$(CONFIG)/libboringssl_pkcs
 
 endif
 
+$(BORINGSSL_PKCS8_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_PKCS8_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16860,6 +17376,8 @@ $(BINDIR)/$(CONFIG)/boringssl_poly1305_test:  $(LIBDIR)/$(CONFIG)/libboringssl_p
 
 endif
 
+$(BORINGSSL_POLY1305_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_POLY1305_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16887,6 +17405,8 @@ $(BINDIR)/$(CONFIG)/boringssl_refcount_test:  $(LIBDIR)/$(CONFIG)/libboringssl_r
 
 endif
 
+$(BORINGSSL_REFCOUNT_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_REFCOUNT_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16914,6 +17434,8 @@ $(BINDIR)/$(CONFIG)/boringssl_rsa_test:  $(LIBDIR)/$(CONFIG)/libboringssl_rsa_te
 
 endif
 
+$(BORINGSSL_RSA_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_RSA_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16941,6 +17463,8 @@ $(BINDIR)/$(CONFIG)/boringssl_thread_test:  $(LIBDIR)/$(CONFIG)/libboringssl_thr
 
 endif
 
+$(BORINGSSL_THREAD_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_THREAD_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16968,6 +17492,8 @@ $(BINDIR)/$(CONFIG)/boringssl_pkcs7_test:  $(LIBDIR)/$(CONFIG)/libboringssl_pkcs
 
 endif
 
+$(BORINGSSL_PKCS7_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_PKCS7_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -16995,6 +17521,8 @@ $(BINDIR)/$(CONFIG)/boringssl_x509_test:  $(LIBDIR)/$(CONFIG)/libboringssl_x509_
 
 endif
 
+$(BORINGSSL_X509_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_X509_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -17022,6 +17550,8 @@ $(BINDIR)/$(CONFIG)/boringssl_tab_test:  $(LIBDIR)/$(CONFIG)/libboringssl_tab_te
 
 endif
 
+$(BORINGSSL_TAB_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_TAB_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -17049,6 +17579,8 @@ $(BINDIR)/$(CONFIG)/boringssl_v3name_test:  $(LIBDIR)/$(CONFIG)/libboringssl_v3n
 
 endif
 
+$(BORINGSSL_V3NAME_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_V3NAME_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -17076,6 +17608,8 @@ $(BINDIR)/$(CONFIG)/boringssl_ssl_test:  $(LIBDIR)/$(CONFIG)/libboringssl_ssl_te
 
 endif
 
+$(BORINGSSL_SSL_TEST_OBJS): CPPFLAGS += -Ithird_party/boringssl/include -fvisibility=hidden -DOPENSSL_NO_ASM -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX
+$(BORINGSSL_SSL_TEST_OBJS): CFLAGS += -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)
 
 
 
@@ -18670,14 +19204,13 @@ src/core/lib/security/transport/security_connector.c: $(OPENSSL_DEP)
 src/core/lib/security/transport/security_handshaker.c: $(OPENSSL_DEP)
 src/core/lib/security/transport/server_auth_filter.c: $(OPENSSL_DEP)
 src/core/lib/security/transport/tsi_error.c: $(OPENSSL_DEP)
-src/core/lib/security/util/b64.c: $(OPENSSL_DEP)
 src/core/lib/security/util/json_util.c: $(OPENSSL_DEP)
 src/core/lib/surface/init_secure.c: $(OPENSSL_DEP)
-src/core/lib/tsi/fake_transport_security.c: $(OPENSSL_DEP)
-src/core/lib/tsi/ssl_transport_security.c: $(OPENSSL_DEP)
-src/core/lib/tsi/transport_security.c: $(OPENSSL_DEP)
 src/core/plugin_registry/grpc_cronet_plugin_registry.c: $(OPENSSL_DEP)
 src/core/plugin_registry/grpc_plugin_registry.c: $(OPENSSL_DEP)
+src/core/tsi/fake_transport_security.c: $(OPENSSL_DEP)
+src/core/tsi/ssl_transport_security.c: $(OPENSSL_DEP)
+src/core/tsi/transport_security.c: $(OPENSSL_DEP)
 src/cpp/client/cronet_credentials.cc: $(OPENSSL_DEP)
 src/cpp/client/secure_credentials.cc: $(OPENSSL_DEP)
 src/cpp/common/auth_property_iterator.cc: $(OPENSSL_DEP)
@@ -18708,6 +19241,7 @@ test/cpp/interop/interop_server.cc: $(OPENSSL_DEP)
 test/cpp/interop/interop_server_bootstrap.cc: $(OPENSSL_DEP)
 test/cpp/interop/server_helper.cc: $(OPENSSL_DEP)
 test/cpp/microbenchmarks/helpers.cc: $(OPENSSL_DEP)
+test/cpp/qps/benchmark_config.cc: $(OPENSSL_DEP)
 test/cpp/qps/client_async.cc: $(OPENSSL_DEP)
 test/cpp/qps/client_sync.cc: $(OPENSSL_DEP)
 test/cpp/qps/driver.cc: $(OPENSSL_DEP)
@@ -18717,7 +19251,6 @@ test/cpp/qps/report.cc: $(OPENSSL_DEP)
 test/cpp/qps/server_async.cc: $(OPENSSL_DEP)
 test/cpp/qps/server_sync.cc: $(OPENSSL_DEP)
 test/cpp/qps/usage_timer.cc: $(OPENSSL_DEP)
-test/cpp/util/benchmark_config.cc: $(OPENSSL_DEP)
 test/cpp/util/byte_buffer_proto_helper.cc: $(OPENSSL_DEP)
 test/cpp/util/cli_call.cc: $(OPENSSL_DEP)
 test/cpp/util/cli_credentials.cc: $(OPENSSL_DEP)
diff --git a/PYTHON-MANIFEST.in b/PYTHON-MANIFEST.in
index adeb39064958e0c56b2f82165ba438618b2aef4b..846530532df40342c9fff3922511311e487c1bb4 100644
--- a/PYTHON-MANIFEST.in
+++ b/PYTHON-MANIFEST.in
@@ -7,6 +7,7 @@ graft include/grpc
 graft third_party/boringssl
 graft third_party/nanopb
 graft third_party/zlib
+graft third_party/c-ares
 include src/python/grpcio/_spawn_patch.py
 include src/python/grpcio/commands.py
 include src/python/grpcio/grpc_version.py
diff --git a/README.md b/README.md
index 174e861f5945fd9a4bd81e14c5ca4252b59bad41..adcfdf10b824db740ab68ed35055f32a3d2f289f 100644
--- a/README.md
+++ b/README.md
@@ -7,11 +7,11 @@
 
 Copyright 2015 Google Inc.
 
-#Documentation
+# Documentation
 
 You can find more detailed documentation and examples in the [doc](doc) and [examples](examples) directories respectively.
 
-#Installation & Testing
+# Installation & Testing
 
 See [INSTALL](INSTALL.md) for installation instructions for various platforms.
 
@@ -19,7 +19,7 @@ See [tools/run_tests](tools/run_tests) for more guidance on how to run various t
 
 See [Performance dashboard](http://performance-dot-grpc-testing.appspot.com/explore?dashboard=5712453606309888) for the performance numbers for v1.0.x.
 
-#Repository Structure & Status
+# 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).
 
@@ -37,14 +37,14 @@ Libraries in different languages may be in different states of development. We a
 | Objective-C             | [src/objective-c] (src/objective-c) | 1.0     |
 
 <small>
-Java source code is in the [grpc-java] (http://github.com/grpc/grpc-java) repository.
-Go source code is in the [grpc-go] (http://github.com/grpc/grpc-go) repository.
+Java source code is in the [grpc-java](http://github.com/grpc/grpc-java) repository.
+Go source code is in the [grpc-go](http://github.com/grpc/grpc-go) repository.
 </small>
 
 See [MANIFEST.md](MANIFEST.md) for a listing of top-level items in the
 repository.
 
-#Overview
+# Overview
 
 
 Remote Procedure Calls (RPCs) provide a useful abstraction for building
@@ -54,7 +54,7 @@ These libraries enable communication between clients and servers using any
 combination of the supported languages.
 
 
-##Interface
+## Interface
 
 
 Developers using gRPC typically start with the description of an RPC service
@@ -66,7 +66,7 @@ Interface Definition Language (IDL) for describing both the service interface
 and the structure of the payload messages. It is possible to use other
 alternatives if desired.
 
-###Surface API
+### Surface API
 Starting from an interface definition in a .proto file, gRPC provides
 Protocol Compiler plugins that generate Client- and Server-side APIs.
 gRPC users typically call into these APIs on the Client side and implement
@@ -94,7 +94,7 @@ the client and the server can send a stream of messages to each other. The strea
 messages are delivered in the order they were sent.
 
 
-#Protocol
+# Protocol
 
 The [gRPC protocol](doc/PROTOCOL-HTTP2.md) specifies the abstract requirements for communication between
 clients and servers. A concrete embedding over HTTP/2 completes the picture by
diff --git a/Rakefile b/Rakefile
index 12ac12710fb8876d8d5f77edd7d17174d0c6d7a0..cc02aa130aba4ccc4ed02c4b50edf2441b9cf0f8 100755
--- a/Rakefile
+++ b/Rakefile
@@ -12,7 +12,8 @@ load 'tools/distrib/docker_for_windows.rb'
 # Add rubocop style checking tasks
 RuboCop::RakeTask.new(:rubocop) do |task|
   task.options = ['-c', 'src/ruby/.rubocop.yml']
-  task.patterns = ['src/ruby/{lib,spec}/**/*.rb']
+  # add end2end tests to formatter but don't add generated proto _pb.rb's
+  task.patterns = ['src/ruby/{lib,spec}/**/*.rb', 'src/ruby/end2end/*.rb']
 end
 
 spec = Gem::Specification.load('grpc.gemspec')
diff --git a/WORKSPACE b/WORKSPACE
index 9b79d04cde6f9e7fd6750f4e592d0e0064f61078..5a3c4de0afbf6f8a39543d408f5296e3b76eeacb 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -28,11 +28,21 @@ bind(
     actual = "@submodule_protobuf//:protoc",
 )
 
+bind(
+    name = "cares",
+    actual = "@submodule_cares//:ares",
+)
+
 bind(
     name = "gtest",
     actual = "@submodule_gtest//:gtest",
 )
 
+bind(
+    name = "benchmark",
+    actual = "@submodule_benchmark//:benchmark",
+)
+
 bind(
     name = "gflags",
     actual = "@com_github_gflags_gflags//:gflags",
@@ -66,3 +76,21 @@ local_repository(
     name = "com_github_gflags_gflags",
     path = "third_party/gflags",
 )
+
+git_repository(
+    name   = "mongoose_repo",
+    commit = "4120a97945b41195a6223a600dae8e3b19bed19e",
+    remote = "https://github.com/makdharma/mongoose.git"
+)
+
+new_local_repository(
+    name = "submodule_benchmark",
+    path = "third_party/benchmark",
+    build_file = "third_party/benchmark.BUILD",
+)
+
+new_local_repository(
+    name = "submodule_cares",
+    path = "third_party/cares",
+    build_file = "third_party/cares/cares.BUILD",
+)
diff --git a/binding.gyp b/binding.gyp
index f941dc75a94d3c84c3b18314b37f671a72ba01f5..32ea5d85f77566b570e3c8620baad7af23893b30 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -39,11 +39,9 @@
 {
   'variables': {
     'runtime%': 'node',
-    # UV integration in C core is disabled by default while bugs are ironed
-    # out. It can be re-enabled for one build by setting the npm config
-    # variable grpc_uv to true, and it can be re-enabled permanently by
-    # setting it to true here.
-    'grpc_uv%': 'false',
+    # UV integration in C core is enabled by default. It can be disabled
+    # by setting this argument to anything else.
+    'grpc_uv%': 'true',
     # Some Node installations use the system installation of OpenSSL, and on
     # some systems, the system OpenSSL still does not have ALPN support. This
     # will let users recompile gRPC to work without ALPN.
@@ -93,6 +91,9 @@
     'conditions': [
       ['grpc_uv=="true"', {
         'defines': [
+          'GRPC_ARES=0',
+          # Disabling this while bugs are ironed out. Uncomment this to
+          # re-enable libuv integration in C core.
           'GRPC_UV'
         ]
       }],
@@ -156,7 +157,8 @@
       }],
       ['OS == "win"', {
         "include_dirs": [
-          "third_party/zlib"
+          "third_party/zlib",
+          "third_party/cares/cares"
         ],
         "defines": [
           '_WIN32_WINNT=0x0600',
@@ -176,7 +178,8 @@
         ]
       }, { # OS != "win"
         'include_dirs': [
-          '<(node_root_dir)/deps/zlib'
+          '<(node_root_dir)/deps/zlib',
+          '<(node_root_dir)/deps/cares/include'
         ]
       }]
     ]
@@ -563,6 +566,7 @@
     }]
   ],
   'targets': [
+
     {
       'cflags': [
         '-std=c99',
@@ -641,6 +645,7 @@
       'type': 'static_library',
       'dependencies': [
         'gpr',
+        'node_modules/cares/deps/cares/cares.gyp:cares',
       ],
       'sources': [
         'src/core/lib/surface/init.c',
@@ -655,6 +660,7 @@
         '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/max_age_filter.c',
         'src/core/lib/channel/message_size_filter.c',
         'src/core/lib/compression/compression.c',
         'src/core/lib/compression/message_compress.c',
@@ -691,6 +697,7 @@
         'src/core/lib/iomgr/resolve_address_windows.c',
         'src/core/lib/iomgr/resource_quota.c',
         'src/core/lib/iomgr/sockaddr_utils.c',
+        'src/core/lib/iomgr/socket_factory_posix.c',
         'src/core/lib/iomgr/socket_mutator.c',
         'src/core/lib/iomgr/socket_utils_common_posix.c',
         'src/core/lib/iomgr/socket_utils_linux.c',
@@ -728,6 +735,7 @@
         'src/core/lib/json/json_reader.c',
         'src/core/lib/json/json_string.c',
         'src/core/lib/json/json_writer.c',
+        'src/core/lib/slice/b64.c',
         'src/core/lib/slice/percent_encoding.c',
         'src/core/lib/slice/slice.c',
         'src/core/lib/slice/slice_buffer.c',
@@ -746,6 +754,7 @@
         'src/core/lib/surface/channel_ping.c',
         'src/core/lib/surface/channel_stack_type.c',
         'src/core/lib/surface/completion_queue.c',
+        'src/core/lib/surface/completion_queue_factory.c',
         'src/core/lib/surface/event_string.c',
         'src/core/lib/surface/lame_client.c',
         'src/core/lib/surface/metadata_array.c',
@@ -809,12 +818,11 @@
         'src/core/lib/security/transport/security_handshaker.c',
         'src/core/lib/security/transport/server_auth_filter.c',
         'src/core/lib/security/transport/tsi_error.c',
-        'src/core/lib/security/util/b64.c',
         'src/core/lib/security/util/json_util.c',
         'src/core/lib/surface/init_secure.c',
-        'src/core/lib/tsi/fake_transport_security.c',
-        'src/core/lib/tsi/ssl_transport_security.c',
-        'src/core/lib/tsi/transport_security.c',
+        'src/core/tsi/fake_transport_security.c',
+        'src/core/tsi/ssl_transport_security.c',
+        'src/core/tsi/transport_security.c',
         'src/core/ext/transport/chttp2/server/chttp2_server.c',
         'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
         'src/core/ext/client_channel/channel_connectivity.c',
@@ -851,6 +859,9 @@
         'third_party/nanopb/pb_encode.c',
         'src/core/ext/lb_policy/pick_first/pick_first.c',
         'src/core/ext/lb_policy/round_robin/round_robin.c',
+        'src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c',
+        'src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c',
+        'src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c',
         'src/core/ext/resolver/dns/native/dns_resolver.c',
         'src/core/ext/resolver/sockaddr/sockaddr_resolver.c',
         'src/core/ext/load_reporting/load_reporting.c',
@@ -935,6 +946,7 @@
       "dependencies": [
         "grpc",
         "gpr",
+        "node_modules/cares/deps/cares/cares.gyp:cares",
       ]
     },
     {
diff --git a/build.yaml b/build.yaml
index 72b15374c638614e042c92d22ba607b4f33ebe99..8aff16854cedd66cbb9e82decb51a2894f9e984a 100644
--- a/build.yaml
+++ b/build.yaml
@@ -156,7 +156,6 @@ filegroups:
   - include/grpc/impl/codegen/gpr_slice.h
   - include/grpc/impl/codegen/gpr_types.h
   - include/grpc/impl/codegen/port_platform.h
-  - include/grpc/impl/codegen/slice.h
   - include/grpc/impl/codegen/sync.h
   - include/grpc/impl/codegen/sync_generic.h
   - include/grpc/impl/codegen/sync_posix.h
@@ -186,6 +185,7 @@ filegroups:
   - 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/max_age_filter.h
   - src/core/lib/channel/message_size_filter.h
   - src/core/lib/compression/algorithm_metadata.h
   - src/core/lib/compression/message_compress.h
@@ -223,6 +223,7 @@ filegroups:
   - src/core/lib/iomgr/sockaddr_posix.h
   - src/core/lib/iomgr/sockaddr_utils.h
   - src/core/lib/iomgr/sockaddr_windows.h
+  - src/core/lib/iomgr/socket_factory_posix.h
   - src/core/lib/iomgr/socket_mutator.h
   - src/core/lib/iomgr/socket_utils.h
   - src/core/lib/iomgr/socket_utils_posix.h
@@ -251,6 +252,7 @@ filegroups:
   - src/core/lib/json/json_common.h
   - src/core/lib/json/json_reader.h
   - src/core/lib/json/json_writer.h
+  - src/core/lib/slice/b64.h
   - src/core/lib/slice/percent_encoding.h
   - src/core/lib/slice/slice_hash_table.h
   - src/core/lib/slice/slice_internal.h
@@ -262,6 +264,7 @@ filegroups:
   - src/core/lib/surface/channel_init.h
   - src/core/lib/surface/channel_stack_type.h
   - src/core/lib/surface/completion_queue.h
+  - src/core/lib/surface/completion_queue_factory.h
   - src/core/lib/surface/event_string.h
   - src/core/lib/surface/init.h
   - src/core/lib/surface/lame_client.h
@@ -293,6 +296,7 @@ filegroups:
   - 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/max_age_filter.c
   - src/core/lib/channel/message_size_filter.c
   - src/core/lib/compression/compression.c
   - src/core/lib/compression/message_compress.c
@@ -329,6 +333,7 @@ filegroups:
   - src/core/lib/iomgr/resolve_address_windows.c
   - src/core/lib/iomgr/resource_quota.c
   - src/core/lib/iomgr/sockaddr_utils.c
+  - src/core/lib/iomgr/socket_factory_posix.c
   - src/core/lib/iomgr/socket_mutator.c
   - src/core/lib/iomgr/socket_utils_common_posix.c
   - src/core/lib/iomgr/socket_utils_linux.c
@@ -366,6 +371,7 @@ filegroups:
   - src/core/lib/json/json_reader.c
   - src/core/lib/json/json_string.c
   - src/core/lib/json/json_writer.c
+  - src/core/lib/slice/b64.c
   - src/core/lib/slice/percent_encoding.c
   - src/core/lib/slice/slice.c
   - src/core/lib/slice/slice_buffer.c
@@ -384,6 +390,7 @@ filegroups:
   - src/core/lib/surface/channel_ping.c
   - src/core/lib/surface/channel_stack_type.c
   - src/core/lib/surface/completion_queue.c
+  - src/core/lib/surface/completion_queue_factory.c
   - src/core/lib/surface/event_string.c
   - src/core/lib/surface/lame_client.c
   - src/core/lib/surface/metadata_array.c
@@ -459,6 +466,7 @@ filegroups:
   - 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/slice.h
   - include/grpc/impl/codegen/status.h
   uses:
   - gpr_codegen
@@ -492,6 +500,7 @@ filegroups:
   plugin: grpc_lb_policy_grpclb
   uses:
   - grpc_base
+  - grpc_secure
   - grpc_client_channel
   - nanopb
 - name: grpc_lb_policy_pick_first
@@ -518,6 +527,18 @@ filegroups:
   plugin: grpc_load_reporting_plugin
   uses:
   - grpc_base
+- name: grpc_resolver_dns_ares
+  headers:
+  - src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h
+  - src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h
+  src:
+  - src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c
+  - src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
+  - src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c
+  plugin: grpc_resolver_dns_ares
+  uses:
+  - grpc_base
+  - grpc_client_channel
 - name: grpc_resolver_dns_native
   src:
   - src/core/ext/resolver/dns/native/dns_resolver.c
@@ -554,7 +575,6 @@ filegroups:
   - src/core/lib/security/transport/security_connector.h
   - src/core/lib/security/transport/security_handshaker.h
   - src/core/lib/security/transport/tsi_error.h
-  - src/core/lib/security/util/b64.h
   - src/core/lib/security/util/json_util.h
   src:
   - src/core/lib/http/httpcli_security_connector.c
@@ -579,7 +599,6 @@ filegroups:
   - src/core/lib/security/transport/security_handshaker.c
   - src/core/lib/security/transport/server_auth_filter.c
   - src/core/lib/security/transport/tsi_error.c
-  - src/core/lib/security/util/b64.c
   - src/core/lib/security/util/json_util.c
   - src/core/lib/surface/init_secure.c
   secure: true
@@ -684,6 +703,7 @@ filegroups:
   uses:
   - grpc_transport_chttp2
   - grpc_base
+  - grpc_client_channel
 - name: grpc_transport_chttp2_client_insecure
   src:
   - src/core/ext/transport/chttp2/client/insecure/channel_create.c
@@ -753,15 +773,15 @@ filegroups:
   - third_party/nanopb/pb_encode.c
 - name: tsi
   headers:
-  - src/core/lib/tsi/fake_transport_security.h
-  - src/core/lib/tsi/ssl_transport_security.h
-  - src/core/lib/tsi/ssl_types.h
-  - src/core/lib/tsi/transport_security.h
-  - src/core/lib/tsi/transport_security_interface.h
+  - src/core/tsi/fake_transport_security.h
+  - src/core/tsi/ssl_transport_security.h
+  - src/core/tsi/ssl_types.h
+  - src/core/tsi/transport_security.h
+  - src/core/tsi/transport_security_interface.h
   src:
-  - src/core/lib/tsi/fake_transport_security.c
-  - src/core/lib/tsi/ssl_transport_security.c
-  - src/core/lib/tsi/transport_security.c
+  - src/core/tsi/fake_transport_security.c
+  - src/core/tsi/ssl_transport_security.c
+  - src/core/tsi/transport_security.c
   deps:
   - gpr
   secure: true
@@ -857,6 +877,8 @@ filegroups:
   - src/cpp/util/time_cc.cc
   uses:
   - grpc++_codegen_base
+  - grpc_base
+  - nanopb
 - name: grpc++_codegen_base
   language: c++
   public_headers:
@@ -962,6 +984,7 @@ libs:
   - grpc_lb_policy_grpclb_secure
   - grpc_lb_policy_pick_first
   - grpc_lb_policy_round_robin
+  - grpc_resolver_dns_ares
   - grpc_resolver_dns_native
   - grpc_resolver_sockaddr
   - grpc_load_reporting
@@ -1055,6 +1078,7 @@ libs:
   - grpc_base
   - grpc_transport_chttp2_server_insecure
   - grpc_transport_chttp2_client_insecure
+  - grpc_resolver_dns_ares
   - grpc_resolver_dns_native
   - grpc_resolver_sockaddr
   - grpc_load_reporting
@@ -1236,6 +1260,7 @@ libs:
   - grpc++
   - grpc_test_util
   - grpc
+  defaults: benchmark
 - name: grpc_cli_libs
   build: private
   language: c++
@@ -1384,6 +1409,7 @@ libs:
   build: private
   language: c++
   headers:
+  - test/cpp/qps/benchmark_config.h
   - test/cpp/qps/client.h
   - test/cpp/qps/driver.h
   - test/cpp/qps/histogram.h
@@ -1394,13 +1420,13 @@ libs:
   - test/cpp/qps/server.h
   - test/cpp/qps/stats.h
   - test/cpp/qps/usage_timer.h
-  - test/cpp/util/benchmark_config.h
   src:
   - src/proto/grpc/testing/messages.proto
   - src/proto/grpc/testing/payloads.proto
   - src/proto/grpc/testing/stats.proto
   - src/proto/grpc/testing/control.proto
   - src/proto/grpc/testing/services.proto
+  - test/cpp/qps/benchmark_config.cc
   - test/cpp/qps/client_async.cc
   - test/cpp/qps/client_sync.cc
   - test/cpp/qps/driver.cc
@@ -1410,7 +1436,6 @@ libs:
   - test/cpp/qps/server_async.cc
   - test/cpp/qps/server_sync.cc
   - test/cpp/qps/usage_timer.cc
-  - test/cpp/util/benchmark_config.cc
   deps:
   - grpc_test_util
   - grpc++_test_util
@@ -2017,7 +2042,7 @@ targets:
   build: test
   language: c
   src:
-  - test/core/security/b64_test.c
+  - test/core/slice/b64_test.c
   deps:
   - grpc_test_util
   - grpc
@@ -3070,6 +3095,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3090,6 +3116,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3110,6 +3137,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3130,6 +3158,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3150,6 +3179,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3170,6 +3200,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3190,6 +3221,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3210,6 +3242,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   excluded_poll_engines:
   - poll
   - poll-cv
@@ -3234,6 +3267,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   excluded_poll_engines:
   - poll
   - poll-cv
@@ -3258,6 +3292,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   excluded_poll_engines:
   - poll
   - poll-cv
@@ -3282,6 +3317,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   excluded_poll_engines:
   - poll
   - poll-cv
@@ -3306,6 +3342,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3326,6 +3363,7 @@ targets:
   - gpr
   args:
   - --benchmark_min_time=0
+  defaults: benchmark
   platforms:
   - mac
   - linux
@@ -3809,6 +3847,7 @@ targets:
   - test/cpp/microbenchmarks/noop-benchmark.cc
   deps:
   - benchmark
+  defaults: benchmark
 - name: proto_server_reflection_test
   gtest: true
   build: test
@@ -4117,7 +4156,6 @@ targets:
   - test/cpp/interop/interop_client.cc
   - test/cpp/interop/stress_interop_client.cc
   - test/cpp/interop/stress_test.cc
-  - test/cpp/util/create_test_channel.cc
   - test/cpp/util/metrics_server.cc
   deps:
   - grpc++_test_util
@@ -4254,6 +4292,9 @@ configs:
     DEFINES: _DEBUG DEBUG
     LDFLAGS: -rdynamic
     valgrind: --tool=helgrind
+  lto:
+    CPPFLAGS: -O2
+    DEFINES: NDEBUG
   memcheck:
     CPPFLAGS: -O0
     DEFINES: _DEBUG DEBUG
@@ -4306,6 +4347,11 @@ configs:
     test_environ:
       UBSAN_OPTIONS: halt_on_error=1:print_stacktrace=1:suppressions=tools/ubsan_suppressions.txt
 defaults:
+  ares:
+    CFLAGS: -Wno-sign-conversion -Wno-invalid-source-encoding
+    CPPFLAGS: -Ithird_party/cares -Ithird_party/cares/cares $(if $(subst Linux,,$(SYSTEM)),,-Ithird_party/cares/config_linux)
+      $(if $(subst Darwin,,$(SYSTEM)),,-Ithird_party/cares/config_darwin) -fvisibility=hidden
+      -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX -DHAVE_CONFIG_H
   benchmark:
     CPPFLAGS: -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
   boringssl:
@@ -4396,11 +4442,13 @@ python_dependencies:
   deps:
   - grpc
   - gpr
+  - ares
   - boringssl
   - z
 ruby_gem:
   deps:
   - grpc
   - gpr
+  - ares
   - boringssl
   - z
diff --git a/config.m4 b/config.m4
index 2bf302b835759e46ee01902346e2660c6333a54c..6e6a65a3ded581be16174dcba109997d9250ba12 100644
--- a/config.m4
+++ b/config.m4
@@ -94,6 +94,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/channel/handshaker_registry.c \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
+    src/core/lib/channel/max_age_filter.c \
     src/core/lib/channel/message_size_filter.c \
     src/core/lib/compression/compression.c \
     src/core/lib/compression/message_compress.c \
@@ -130,6 +131,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_factory_posix.c \
     src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
@@ -167,6 +169,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/json/json_reader.c \
     src/core/lib/json/json_string.c \
     src/core/lib/json/json_writer.c \
+    src/core/lib/slice/b64.c \
     src/core/lib/slice/percent_encoding.c \
     src/core/lib/slice/slice.c \
     src/core/lib/slice/slice_buffer.c \
@@ -185,6 +188,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/surface/channel_ping.c \
     src/core/lib/surface/channel_stack_type.c \
     src/core/lib/surface/completion_queue.c \
+    src/core/lib/surface/completion_queue_factory.c \
     src/core/lib/surface/event_string.c \
     src/core/lib/surface/lame_client.c \
     src/core/lib/surface/metadata_array.c \
@@ -248,12 +252,11 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/security/transport/security_handshaker.c \
     src/core/lib/security/transport/server_auth_filter.c \
     src/core/lib/security/transport/tsi_error.c \
-    src/core/lib/security/util/b64.c \
     src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
-    src/core/lib/tsi/fake_transport_security.c \
-    src/core/lib/tsi/ssl_transport_security.c \
-    src/core/lib/tsi/transport_security.c \
+    src/core/tsi/fake_transport_security.c \
+    src/core/tsi/ssl_transport_security.c \
+    src/core/tsi/transport_security.c \
     src/core/ext/transport/chttp2/server/chttp2_server.c \
     src/core/ext/transport/chttp2/client/secure/secure_channel_create.c \
     src/core/ext/client_channel/channel_connectivity.c \
@@ -290,6 +293,9 @@ if test "$PHP_GRPC" != "no"; then
     third_party/nanopb/pb_encode.c \
     src/core/ext/lb_policy/pick_first/pick_first.c \
     src/core/ext/lb_policy/round_robin/round_robin.c \
+    src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c \
+    src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c \
     src/core/ext/resolver/dns/native/dns_resolver.c \
     src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
     src/core/ext/load_reporting/load_reporting.c \
@@ -629,6 +635,7 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/pick_first)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/round_robin)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/load_reporting)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/dns/c_ares)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/dns/native)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/sockaddr)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/alpn)
@@ -662,8 +669,8 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/support)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/surface)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/transport)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/tsi)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/plugin_registry)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/tsi)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/aes)
   PHP_ADD_BUILD_DIR($ext_builddir/third_party/boringssl/crypto/asn1)
diff --git a/doc/PROTOCOL-HTTP2.md b/doc/PROTOCOL-HTTP2.md
index 2df1c74beef7b5d8f7e8796424d7abe391c20f3f..68af1f2ca19ef73da33ae041fa7335302fa49176 100644
--- a/doc/PROTOCOL-HTTP2.md
+++ b/doc/PROTOCOL-HTTP2.md
@@ -91,7 +91,7 @@ A **Compressed-Flag** value of 1 indicates that the binary octet sequence of **M
 
 For requests, **EOS** (end-of-stream) is indicated by the presence of the END_STREAM flag on the last received DATA frame. In scenarios where the **Request** stream needs to be closed but no data remains to be sent implementations MUST send an empty DATA frame with this flag set.
 
-###Responses
+### Responses
 
 * **Response** → (Response-Headers \*Length-Prefixed-Message Trailers) / Trailers-Only
 * **Response-Headers** → HTTP-Status [Message-Encoding] [Message-Accept-Encoding] Content-Type \*Custom-Metadata
@@ -128,7 +128,7 @@ implementation can decode valid portions while leaving broken %-encodings as-is
 or replacing them with a replacement character (e.g., '?' or the Unicode
 replacement character).
 
-####Example
+#### Example
 
 Sample unary-call showing HTTP2 framing sequence
 
@@ -162,7 +162,7 @@ HEADERS (flags = END_STREAM, END_HEADERS)
 grpc-status = 0 # OK
 trace-proto-bin = jher831yy13JHy3hc
 ```
-####User Agents
+#### User Agents
 
 While the protocol does not require a user-agent to function it is recommended that clients provide a structured user-agent string that provides a basic description of the calling library, version & platform to facilitate issue diagnosis in heterogeneous environments. The following structure is recommended to library developers
 ```
@@ -177,7 +177,7 @@ grpc-ruby-jruby/1.3.4
 grpc-java-android/0.9.1 (gingerbread/1.2.4; nexus5; tmobile)
 ```
 
-####Idempotency and Retries
+#### Idempotency and Retries
 
 Unless explicitly defined to be, gRPC Calls are not assumed to be idempotent.  Specifically:
 
@@ -186,15 +186,15 @@ Unless explicitly defined to be, gRPC Calls are not assumed to be idempotent.  S
 * Calls that are marked as idempotent may be sent multiple times.
 
 
-####HTTP2 Transport Mapping
+#### HTTP2 Transport Mapping
 
-#####Stream Identification
+##### Stream Identification
 All GRPC calls need to specify an internal ID. We will use HTTP2 stream-ids as call identifiers in this scheme. NOTE: These id’s are contextual to an open HTTP2 session and will not be unique within a given process that is handling more than one HTTP2 session nor can they be used as GUIDs.
 
-#####Data Frames
+##### Data Frames
 DATA frame boundaries have no relation to **Length-Prefixed-Message** boundaries and implementations should make no assumptions about their alignment.
 
-#####Errors
+##### Errors
 
 When an application or runtime error occurs during an RPC a **Status** and **Status-Message** are delivered in **Trailers**.
 
@@ -219,20 +219,20 @@ ENHANCE_YOUR_CALM|RESOURCE_EXHAUSTED ...with additional error detail provided by
 INADEQUATE_SECURITY| PERMISSION_DENIED … with additional detail indicating that permission was denied as protocol is not secure enough for call.
 
 
-#####Security
+##### Security
 
 The HTTP2 specification mandates the use of TLS 1.2 or higher when TLS is used with HTTP2. It also places some additional constraints on the allowed ciphers in deployments to avoid known-problems as well as requiring SNI support. It is also expected that HTTP2 will be used in conjunction with proprietary transport security mechanisms about which the specification can make no meaningful recommendations.
 
-#####Connection Management
-######GOAWAY Frame
+##### Connection Management
+###### GOAWAY Frame
 Sent by servers to clients to indicate that they will no longer accept any new streams on the associated connections. This frame includes the id of the last successfully accepted stream by the server. Clients should consider any stream initiated after the last successfully accepted stream as UNAVAILABLE and retry the call elsewhere. Clients are free to continue working with the already accepted streams until they complete or the connection is terminated.
 
 Servers should send GOAWAY before terminating a connection to reliably inform clients which work has been accepted by the server and is being executed.
 
-######PING Frame
+###### PING Frame
 Both clients and servers can send a PING frame that the peer must respond to by precisely echoing what they received. This is used to assert that the connection is still live as well as providing a means to estimate end-to-end latency. If a server initiated PING does not receive a response within the deadline expected by the runtime all outstanding calls on the server will be closed with a CANCELLED status. An expired client initiated PING will cause all calls to be closed with an UNAVAILABLE status. Note that the frequency of PINGs is highly dependent on the network environment, implementations are free to adjust PING frequency based on network and application requirements.
 
-######Connection failure
+###### Connection failure
 If a detectable connection failure occurs on the client all calls will be closed with an UNAVAILABLE status. For servers open calls will be closed with a CANCELLED status.
 
 
diff --git a/doc/environment_variables.md b/doc/environment_variables.md
index a3806732334302a5e555fb147c536194371535a7..513936d6600fbc1562520b9a1c4bf7956f6c1e92 100644
--- a/doc/environment_variables.md
+++ b/doc/environment_variables.md
@@ -69,3 +69,11 @@ some configuration as environment variables that can be set.
   - DEBUG - log all gRPC messages
   - INFO - log INFO and ERROR message
   - ERROR - log only errors
+
+* GRPC_DNS_RESOLVER
+  Declares which DNS resolver to use. The default is ares if gRPC is built with
+  c-ares support. Otherwise, the value of this environment variable is ignored.
+  Available DNS resolver include:
+  - native (default)- a DNS resolver based around getaddrinfo(), creates a new thread to
+    perform name resolution
+  - ares - a DNS resolver based around the c-ares library
diff --git a/doc/interop-test-descriptions.md b/doc/interop-test-descriptions.md
index da3b97674438b5f36d0b3fe6512f5b0f70a4d156..66a034d630709f50373dd3909fb68ad183f21bc8 100644
--- a/doc/interop-test-descriptions.md
+++ b/doc/interop-test-descriptions.md
@@ -27,7 +27,7 @@ Clients should accept these arguments:
     * Whether to use a plaintext or encrypted connection
 * --use_test_ca=BOOLEAN
     * Whether to replace platform root CAs with
-      [ca.pem](https://github.com/grpc/grpc/blob/master/src/core/lib/tsi/test_creds/ca.pem)
+      [ca.pem](https://github.com/grpc/grpc/blob/master/src/core/tsi/test_creds/ca.pem)
       as the CA root
 * --default_service_account=ACCOUNT_EMAIL
     * Email of the GCE default service account.
@@ -969,7 +969,7 @@ Servers should accept these arguments:
     * Whether to use a plaintext or encrypted connection
 
 Servers must support TLS with ALPN. They should use
-[server1.pem](https://github.com/grpc/grpc/blob/master/src/core/lib/tsi/test_creds/server1.pem)
+[server1.pem](https://github.com/grpc/grpc/blob/master/src/core/tsi/test_creds/server1.pem)
 for their certificate.
 
 ### EmptyCall
diff --git a/examples/ruby/errors_and_cancellation/README.md b/examples/ruby/errors_and_cancellation/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..126518c4aab19e7aaf703a728f5f82e5d52954d7
--- /dev/null
+++ b/examples/ruby/errors_and_cancellation/README.md
@@ -0,0 +1,25 @@
+#Errors and Cancelletion code samples for grpc-ruby
+
+The examples in this directory show use of grpc errors.
+
+On the server side, errors are returned from service
+implementations by raising a certain `GRPC::BadStatus` exception.
+
+On the client side, GRPC errors get raised when either:
+ * the call completes (unary and client-streaming call types)
+ * the response `Enumerable` is iterated through (server-streaming and
+   bidi call types).
+
+## To run the examples here:
+
+Start the server:
+
+```
+> ruby error_examples_server.rb
+```
+
+Then run the client:
+
+```
+> ruby error_examples_client.rb
+```
diff --git a/examples/ruby/errors_and_cancellation/error_examples_client.rb b/examples/ruby/errors_and_cancellation/error_examples_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..90456d066d7b347bb341b3e78d5ef7c4cb3ff049
--- /dev/null
+++ b/examples/ruby/errors_and_cancellation/error_examples_client.rb
@@ -0,0 +1,117 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Sample app that connects to an error-throwing implementation of
+# Route Guide service.
+#
+# Usage: $ path/to/route_guide_client.rb
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
+
+require 'grpc'
+require 'route_guide_services_pb'
+
+include Routeguide
+
+def run_get_feature_expect_error(stub)
+  resp = stub.get_feature(Point.new)
+end
+
+def run_list_features_expect_error(stub)
+  resps = stub.list_features(Rectangle.new)
+
+  # NOOP iteration to pick up error
+  resps.each { }
+end
+
+def run_record_route_expect_error(stub)
+  stub.record_route([])
+end
+
+def run_route_chat_expect_error(stub)
+  resps = stub.route_chat([])
+
+  # NOOP iteration to pick up error
+  resps.each { }
+end
+
+def main
+  stub = RouteGuide::Stub.new('localhost:50051', :this_channel_is_insecure)
+
+  begin
+    run_get_feature_expect_error(stub)
+  rescue GRPC::BadStatus => e
+    puts "===== GetFeature exception: ====="
+    puts e.inspect
+    puts "e.code: #{e.code}"
+    puts "e.details: #{e.details}"
+    puts "e.metadata: #{e.metadata}"
+    puts "================================="
+  end
+
+  begin
+    run_list_features_expect_error(stub)
+  rescue GRPC::BadStatus => e
+    error = true
+    puts "===== ListFeatures exception: ====="
+    puts e.inspect
+    puts "e.code: #{e.code}"
+    puts "e.details: #{e.details}"
+    puts "e.metadata: #{e.metadata}"
+    puts "================================="
+  end
+
+  begin
+    run_route_chat_expect_error(stub)
+  rescue GRPC::BadStatus => e
+    puts "==== RouteChat exception: ===="
+    puts e.inspect
+    puts "e.code: #{e.code}"
+    puts "e.details: #{e.details}"
+    puts "e.metadata: #{e.metadata}"
+    puts "================================="
+  end
+
+  begin
+    run_record_route_expect_error(stub)
+  rescue GRPC::BadStatus => e
+    puts "==== RecordRoute exception: ===="
+    puts e.inspect
+    puts "e.code: #{e.code}"
+    puts "e.details: #{e.details}"
+    puts "e.metadata: #{e.metadata}"
+    puts "================================="
+  end
+end
+
+main
diff --git a/examples/ruby/errors_and_cancellation/error_examples_server.rb b/examples/ruby/errors_and_cancellation/error_examples_server.rb
new file mode 100755
index 0000000000000000000000000000000000000000..66751882d91fd4ca545fbc889ba4528ef9f0231d
--- /dev/null
+++ b/examples/ruby/errors_and_cancellation/error_examples_server.rb
@@ -0,0 +1,76 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Error-throwing implementation of Route Guide service.
+#
+# Usage: $ path/to/route_guide_server.rb
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
+
+require 'grpc'
+require 'route_guide_services_pb'
+
+include Routeguide
+
+include GRPC::Core::StatusCodes
+
+# CanellingandErrorReturningServiceImpl provides an implementation of the RouteGuide service.
+class CancellingAndErrorReturningServerImpl < RouteGuide::Service
+  # def get_feature
+  #   Note get_feature isn't implemented in this subclass, so the server
+  #   will get a gRPC UNIMPLEMENTED error when it's called.
+
+  def list_features(rectangle, _call)
+    raise "string appears on the client in the 'details' field of a 'GRPC::Unknown' exception"
+  end
+
+  def record_route(call)
+    raise GRPC::BadStatus.new_status_exception(CANCELLED)
+  end
+
+  def route_chat(notes)
+    raise GRPC::BadStatus.new_status_exception(ABORTED, details = 'arbitrary', metadata = {somekey: 'val'})
+  end
+end
+
+def main
+  port = '0.0.0.0:50051'
+  s = GRPC::RpcServer.new
+  s.add_http2_port(port, :this_port_is_insecure)
+  GRPC.logger.info("... running insecurely on #{port}")
+  s.handle(CancellingAndErrorReturningServerImpl.new)
+  s.run_till_terminated
+end
+
+main
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 6d1a59766e5a8fb50dceff49c0a0d102da834d4d..d750a5b9841c8d018ff147c32d17dfe7f3f200af 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -51,7 +51,7 @@ Pod::Spec.new do |s|
     :submodules => true,
   }
 
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
   s.requires_arc = false
 
@@ -104,6 +104,7 @@ Pod::Spec.new do |s|
   }
 
   s.default_subspecs = 'Interface', 'Implementation'
+  s.compiler_flags = '-DGRPC_ARES=0'
 
   # Like many other C libraries, gRPC-Core has its public headers under `include/<libname>/` and its
   # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't
@@ -151,7 +152,6 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
-                      'include/grpc/impl/codegen/slice.h',
                       'include/grpc/impl/codegen/sync.h',
                       'include/grpc/impl/codegen/sync_generic.h',
                       'include/grpc/impl/codegen/sync_posix.h',
@@ -172,6 +172,7 @@ Pod::Spec.new do |s|
                       '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/slice.h',
                       'include/grpc/impl/codegen/status.h',
                       'include/grpc/impl/codegen/atm.h',
                       'include/grpc/impl/codegen/atm_gcc_atomic.h',
@@ -180,7 +181,6 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/codegen/gpr_slice.h',
                       'include/grpc/impl/codegen/gpr_types.h',
                       'include/grpc/impl/codegen/port_platform.h',
-                      'include/grpc/impl/codegen/slice.h',
                       'include/grpc/impl/codegen/sync.h',
                       'include/grpc/impl/codegen/sync_generic.h',
                       'include/grpc/impl/codegen/sync_posix.h',
@@ -267,6 +267,7 @@ Pod::Spec.new do |s|
                       '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/max_age_filter.h',
                       'src/core/lib/channel/message_size_filter.h',
                       'src/core/lib/compression/algorithm_metadata.h',
                       'src/core/lib/compression/message_compress.h',
@@ -304,6 +305,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/sockaddr_posix.h',
                       'src/core/lib/iomgr/sockaddr_utils.h',
                       'src/core/lib/iomgr/sockaddr_windows.h',
+                      'src/core/lib/iomgr/socket_factory_posix.h',
                       'src/core/lib/iomgr/socket_mutator.h',
                       'src/core/lib/iomgr/socket_utils.h',
                       'src/core/lib/iomgr/socket_utils_posix.h',
@@ -332,6 +334,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/json/json_common.h',
                       'src/core/lib/json/json_reader.h',
                       'src/core/lib/json/json_writer.h',
+                      'src/core/lib/slice/b64.h',
                       'src/core/lib/slice/percent_encoding.h',
                       'src/core/lib/slice/slice_hash_table.h',
                       'src/core/lib/slice/slice_internal.h',
@@ -343,6 +346,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/surface/channel_init.h',
                       'src/core/lib/surface/channel_stack_type.h',
                       'src/core/lib/surface/completion_queue.h',
+                      'src/core/lib/surface/completion_queue_factory.h',
                       'src/core/lib/surface/event_string.h',
                       'src/core/lib/surface/init.h',
                       'src/core/lib/surface/lame_client.h',
@@ -399,13 +403,12 @@ Pod::Spec.new do |s|
                       'src/core/lib/security/transport/security_connector.h',
                       'src/core/lib/security/transport/security_handshaker.h',
                       'src/core/lib/security/transport/tsi_error.h',
-                      'src/core/lib/security/util/b64.h',
                       'src/core/lib/security/util/json_util.h',
-                      'src/core/lib/tsi/fake_transport_security.h',
-                      'src/core/lib/tsi/ssl_transport_security.h',
-                      'src/core/lib/tsi/ssl_types.h',
-                      'src/core/lib/tsi/transport_security.h',
-                      'src/core/lib/tsi/transport_security_interface.h',
+                      'src/core/tsi/fake_transport_security.h',
+                      'src/core/tsi/ssl_transport_security.h',
+                      'src/core/tsi/ssl_types.h',
+                      'src/core/tsi/transport_security.h',
+                      'src/core/tsi/transport_security_interface.h',
                       'src/core/ext/transport/chttp2/server/chttp2_server.h',
                       'src/core/ext/client_channel/client_channel.h',
                       'src/core/ext/client_channel/client_channel_factory.h',
@@ -434,6 +437,8 @@ Pod::Spec.new do |s|
                       'third_party/nanopb/pb_common.h',
                       'third_party/nanopb/pb_decode.h',
                       'third_party/nanopb/pb_encode.h',
+                      'src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h',
+                      'src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h',
                       'src/core/ext/load_reporting/load_reporting.h',
                       'src/core/ext/load_reporting/load_reporting_filter.h',
                       'src/core/ext/census/aggregation.h',
@@ -464,6 +469,7 @@ Pod::Spec.new do |s|
                       '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/max_age_filter.c',
                       'src/core/lib/channel/message_size_filter.c',
                       'src/core/lib/compression/compression.c',
                       'src/core/lib/compression/message_compress.c',
@@ -500,6 +506,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/resolve_address_windows.c',
                       'src/core/lib/iomgr/resource_quota.c',
                       'src/core/lib/iomgr/sockaddr_utils.c',
+                      'src/core/lib/iomgr/socket_factory_posix.c',
                       'src/core/lib/iomgr/socket_mutator.c',
                       'src/core/lib/iomgr/socket_utils_common_posix.c',
                       'src/core/lib/iomgr/socket_utils_linux.c',
@@ -537,6 +544,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/json/json_reader.c',
                       'src/core/lib/json/json_string.c',
                       'src/core/lib/json/json_writer.c',
+                      'src/core/lib/slice/b64.c',
                       'src/core/lib/slice/percent_encoding.c',
                       'src/core/lib/slice/slice.c',
                       'src/core/lib/slice/slice_buffer.c',
@@ -555,6 +563,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/surface/channel_ping.c',
                       'src/core/lib/surface/channel_stack_type.c',
                       'src/core/lib/surface/completion_queue.c',
+                      'src/core/lib/surface/completion_queue_factory.c',
                       'src/core/lib/surface/event_string.c',
                       'src/core/lib/surface/lame_client.c',
                       'src/core/lib/surface/metadata_array.c',
@@ -618,12 +627,11 @@ Pod::Spec.new do |s|
                       'src/core/lib/security/transport/security_handshaker.c',
                       'src/core/lib/security/transport/server_auth_filter.c',
                       'src/core/lib/security/transport/tsi_error.c',
-                      'src/core/lib/security/util/b64.c',
                       'src/core/lib/security/util/json_util.c',
                       'src/core/lib/surface/init_secure.c',
-                      'src/core/lib/tsi/fake_transport_security.c',
-                      'src/core/lib/tsi/ssl_transport_security.c',
-                      'src/core/lib/tsi/transport_security.c',
+                      'src/core/tsi/fake_transport_security.c',
+                      'src/core/tsi/ssl_transport_security.c',
+                      'src/core/tsi/transport_security.c',
                       'src/core/ext/transport/chttp2/server/chttp2_server.c',
                       'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
                       'src/core/ext/client_channel/channel_connectivity.c',
@@ -660,6 +668,9 @@ Pod::Spec.new do |s|
                       'third_party/nanopb/pb_encode.c',
                       'src/core/ext/lb_policy/pick_first/pick_first.c',
                       'src/core/ext/lb_policy/round_robin/round_robin.c',
+                      'src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c',
+                      'src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c',
+                      'src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c',
                       'src/core/ext/resolver/dns/native/dns_resolver.c',
                       'src/core/ext/resolver/sockaddr/sockaddr_resolver.c',
                       'src/core/ext/load_reporting/load_reporting.c',
@@ -706,6 +717,7 @@ Pod::Spec.new do |s|
                               '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/max_age_filter.h',
                               'src/core/lib/channel/message_size_filter.h',
                               'src/core/lib/compression/algorithm_metadata.h',
                               'src/core/lib/compression/message_compress.h',
@@ -743,6 +755,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/iomgr/sockaddr_posix.h',
                               'src/core/lib/iomgr/sockaddr_utils.h',
                               'src/core/lib/iomgr/sockaddr_windows.h',
+                              'src/core/lib/iomgr/socket_factory_posix.h',
                               'src/core/lib/iomgr/socket_mutator.h',
                               'src/core/lib/iomgr/socket_utils.h',
                               'src/core/lib/iomgr/socket_utils_posix.h',
@@ -771,6 +784,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/json/json_common.h',
                               'src/core/lib/json/json_reader.h',
                               'src/core/lib/json/json_writer.h',
+                              'src/core/lib/slice/b64.h',
                               'src/core/lib/slice/percent_encoding.h',
                               'src/core/lib/slice/slice_hash_table.h',
                               'src/core/lib/slice/slice_internal.h',
@@ -782,6 +796,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/surface/channel_init.h',
                               'src/core/lib/surface/channel_stack_type.h',
                               'src/core/lib/surface/completion_queue.h',
+                              'src/core/lib/surface/completion_queue_factory.h',
                               'src/core/lib/surface/event_string.h',
                               'src/core/lib/surface/init.h',
                               'src/core/lib/surface/lame_client.h',
@@ -838,13 +853,12 @@ Pod::Spec.new do |s|
                               'src/core/lib/security/transport/security_connector.h',
                               'src/core/lib/security/transport/security_handshaker.h',
                               'src/core/lib/security/transport/tsi_error.h',
-                              'src/core/lib/security/util/b64.h',
                               'src/core/lib/security/util/json_util.h',
-                              'src/core/lib/tsi/fake_transport_security.h',
-                              'src/core/lib/tsi/ssl_transport_security.h',
-                              'src/core/lib/tsi/ssl_types.h',
-                              'src/core/lib/tsi/transport_security.h',
-                              'src/core/lib/tsi/transport_security_interface.h',
+                              'src/core/tsi/fake_transport_security.h',
+                              'src/core/tsi/ssl_transport_security.h',
+                              'src/core/tsi/ssl_types.h',
+                              'src/core/tsi/transport_security.h',
+                              'src/core/tsi/transport_security_interface.h',
                               'src/core/ext/transport/chttp2/server/chttp2_server.h',
                               'src/core/ext/client_channel/client_channel.h',
                               'src/core/ext/client_channel/client_channel_factory.h',
@@ -873,6 +887,8 @@ Pod::Spec.new do |s|
                               'third_party/nanopb/pb_common.h',
                               'third_party/nanopb/pb_decode.h',
                               'third_party/nanopb/pb_encode.h',
+                              'src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h',
+                              'src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h',
                               'src/core/ext/load_reporting/load_reporting.h',
                               'src/core/ext/load_reporting/load_reporting_filter.h',
                               'src/core/ext/census/aggregation.h',
@@ -895,8 +911,7 @@ Pod::Spec.new do |s|
 
   s.subspec 'Cronet-Interface' do |ss|
     ss.header_mappings_dir = 'include/grpc'
-    ss.source_files = 'include/grpc/grpc_cronet.h',
-                      'src/core/ext/transport/cronet/transport/cronet_transport.h'
+    ss.source_files = 'include/grpc/grpc_cronet.h'
   end
 
   s.subspec 'Cronet-Implementation' do |ss|
@@ -907,7 +922,7 @@ Pod::Spec.new do |s|
     ss.dependency "#{s.name}/Cronet-Interface", version
 
     ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-                      'src/core/ext/transport/cronet/transport/cronet_transport.c',
+                      'src/core/ext/transport/cronet/transport/cronet_transport.{c,h}',
                       'third_party/objective_c/Cronet/bidirectional_stream_c.h'
   end
 
@@ -922,7 +937,7 @@ Pod::Spec.new do |s|
                       'test/core/end2end/end2end_test_utils.c',
                       'test/core/end2end/tests/*.{c,h}',
                       'test/core/end2end/data/*.{c,h}',
-                      'test/core/util/debugger_macros.c',
+                      'test/core/util/debugger_macros.{c,h}',
                       'test/core/util/test_config.{c,h}',
                       'test/core/util/port.h',
                       'test/core/util/port.c',
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
index 6ca9fcd3426919ee2148a405549546562173a774..1940015782eac50bed8010c957dda0237235ecb2 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -48,7 +48,7 @@ Pod::Spec.new do |s|
     :tag => "v#{version}",
   }
 
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
 
   name = 'ProtoRPC'
diff --git a/gRPC-RxLibrary.podspec b/gRPC-RxLibrary.podspec
index 51b52c0c440a50d22b54bbca63893c47ff2b9392..841a85336333185e3f6a1fe9437e35c8cbe5b183 100644
--- a/gRPC-RxLibrary.podspec
+++ b/gRPC-RxLibrary.podspec
@@ -48,7 +48,7 @@ Pod::Spec.new do |s|
     :tag => "v#{version}",
   }
 
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
 
   name = 'RxLibrary'
diff --git a/gRPC.podspec b/gRPC.podspec
index 83a86803ebc17ff42ff1cfda2e366c1d4c5a1b87..08ea79118d1a03a78301e367545f5b22d13e7793 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -47,7 +47,7 @@ Pod::Spec.new do |s|
     :tag => "v#{version}",
   }
 
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
 
   name = 'GRPCClient'
diff --git a/grpc.def b/grpc.def
index 30d60b0d06d42aecf894460d0ffe257f59070dac..1589316a58818fc616fa41d7cf78bc7984561855 100644
--- a/grpc.def
+++ b/grpc.def
@@ -53,6 +53,9 @@ EXPORTS
     grpc_shutdown
     grpc_version_string
     grpc_g_stands_for
+    grpc_completion_queue_factory_lookup
+    grpc_completion_queue_create_for_next
+    grpc_completion_queue_create_for_pluck
     grpc_completion_queue_create
     grpc_completion_queue_next
     grpc_completion_queue_pluck
diff --git a/grpc.gemspec b/grpc.gemspec
index 8074df266ce34936fd0feb1810e6e62735582980..42d4298c9b62c06f5e46ada434b1c9634f7cab17 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -76,7 +76,6 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
-  s.files += %w( include/grpc/impl/codegen/slice.h )
   s.files += %w( include/grpc/impl/codegen/sync.h )
   s.files += %w( include/grpc/impl/codegen/sync_generic.h )
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
@@ -157,6 +156,7 @@ Gem::Specification.new do |s|
   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/slice.h )
   s.files += %w( include/grpc/impl/codegen/status.h )
   s.files += %w( include/grpc/impl/codegen/atm.h )
   s.files += %w( include/grpc/impl/codegen/atm_gcc_atomic.h )
@@ -165,7 +165,6 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/codegen/gpr_slice.h )
   s.files += %w( include/grpc/impl/codegen/gpr_types.h )
   s.files += %w( include/grpc/impl/codegen/port_platform.h )
-  s.files += %w( include/grpc/impl/codegen/slice.h )
   s.files += %w( include/grpc/impl/codegen/sync.h )
   s.files += %w( include/grpc/impl/codegen/sync_generic.h )
   s.files += %w( include/grpc/impl/codegen/sync_posix.h )
@@ -184,6 +183,7 @@ Gem::Specification.new do |s|
   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/max_age_filter.h )
   s.files += %w( src/core/lib/channel/message_size_filter.h )
   s.files += %w( src/core/lib/compression/algorithm_metadata.h )
   s.files += %w( src/core/lib/compression/message_compress.h )
@@ -221,6 +221,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/sockaddr_posix.h )
   s.files += %w( src/core/lib/iomgr/sockaddr_utils.h )
   s.files += %w( src/core/lib/iomgr/sockaddr_windows.h )
+  s.files += %w( src/core/lib/iomgr/socket_factory_posix.h )
   s.files += %w( src/core/lib/iomgr/socket_mutator.h )
   s.files += %w( src/core/lib/iomgr/socket_utils.h )
   s.files += %w( src/core/lib/iomgr/socket_utils_posix.h )
@@ -249,6 +250,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/json/json_common.h )
   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/b64.h )
   s.files += %w( src/core/lib/slice/percent_encoding.h )
   s.files += %w( src/core/lib/slice/slice_hash_table.h )
   s.files += %w( src/core/lib/slice/slice_internal.h )
@@ -260,6 +262,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/surface/channel_init.h )
   s.files += %w( src/core/lib/surface/channel_stack_type.h )
   s.files += %w( src/core/lib/surface/completion_queue.h )
+  s.files += %w( src/core/lib/surface/completion_queue_factory.h )
   s.files += %w( src/core/lib/surface/event_string.h )
   s.files += %w( src/core/lib/surface/init.h )
   s.files += %w( src/core/lib/surface/lame_client.h )
@@ -316,13 +319,12 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/security/transport/security_connector.h )
   s.files += %w( src/core/lib/security/transport/security_handshaker.h )
   s.files += %w( src/core/lib/security/transport/tsi_error.h )
-  s.files += %w( src/core/lib/security/util/b64.h )
   s.files += %w( src/core/lib/security/util/json_util.h )
-  s.files += %w( src/core/lib/tsi/fake_transport_security.h )
-  s.files += %w( src/core/lib/tsi/ssl_transport_security.h )
-  s.files += %w( src/core/lib/tsi/ssl_types.h )
-  s.files += %w( src/core/lib/tsi/transport_security.h )
-  s.files += %w( src/core/lib/tsi/transport_security_interface.h )
+  s.files += %w( src/core/tsi/fake_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_transport_security.h )
+  s.files += %w( src/core/tsi/ssl_types.h )
+  s.files += %w( src/core/tsi/transport_security.h )
+  s.files += %w( src/core/tsi/transport_security_interface.h )
   s.files += %w( src/core/ext/transport/chttp2/server/chttp2_server.h )
   s.files += %w( src/core/ext/client_channel/client_channel.h )
   s.files += %w( src/core/ext/client_channel/client_channel_factory.h )
@@ -351,6 +353,8 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/nanopb/pb_common.h )
   s.files += %w( third_party/nanopb/pb_decode.h )
   s.files += %w( third_party/nanopb/pb_encode.h )
+  s.files += %w( src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h )
+  s.files += %w( src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h )
   s.files += %w( src/core/ext/load_reporting/load_reporting.h )
   s.files += %w( src/core/ext/load_reporting/load_reporting_filter.h )
   s.files += %w( src/core/ext/census/aggregation.h )
@@ -381,6 +385,7 @@ Gem::Specification.new do |s|
   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/max_age_filter.c )
   s.files += %w( src/core/lib/channel/message_size_filter.c )
   s.files += %w( src/core/lib/compression/compression.c )
   s.files += %w( src/core/lib/compression/message_compress.c )
@@ -417,6 +422,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/resolve_address_windows.c )
   s.files += %w( src/core/lib/iomgr/resource_quota.c )
   s.files += %w( src/core/lib/iomgr/sockaddr_utils.c )
+  s.files += %w( src/core/lib/iomgr/socket_factory_posix.c )
   s.files += %w( src/core/lib/iomgr/socket_mutator.c )
   s.files += %w( src/core/lib/iomgr/socket_utils_common_posix.c )
   s.files += %w( src/core/lib/iomgr/socket_utils_linux.c )
@@ -454,6 +460,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/json/json_reader.c )
   s.files += %w( src/core/lib/json/json_string.c )
   s.files += %w( src/core/lib/json/json_writer.c )
+  s.files += %w( src/core/lib/slice/b64.c )
   s.files += %w( src/core/lib/slice/percent_encoding.c )
   s.files += %w( src/core/lib/slice/slice.c )
   s.files += %w( src/core/lib/slice/slice_buffer.c )
@@ -472,6 +479,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/surface/channel_ping.c )
   s.files += %w( src/core/lib/surface/channel_stack_type.c )
   s.files += %w( src/core/lib/surface/completion_queue.c )
+  s.files += %w( src/core/lib/surface/completion_queue_factory.c )
   s.files += %w( src/core/lib/surface/event_string.c )
   s.files += %w( src/core/lib/surface/lame_client.c )
   s.files += %w( src/core/lib/surface/metadata_array.c )
@@ -535,12 +543,11 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/security/transport/security_handshaker.c )
   s.files += %w( src/core/lib/security/transport/server_auth_filter.c )
   s.files += %w( src/core/lib/security/transport/tsi_error.c )
-  s.files += %w( src/core/lib/security/util/b64.c )
   s.files += %w( src/core/lib/security/util/json_util.c )
   s.files += %w( src/core/lib/surface/init_secure.c )
-  s.files += %w( src/core/lib/tsi/fake_transport_security.c )
-  s.files += %w( src/core/lib/tsi/ssl_transport_security.c )
-  s.files += %w( src/core/lib/tsi/transport_security.c )
+  s.files += %w( src/core/tsi/fake_transport_security.c )
+  s.files += %w( src/core/tsi/ssl_transport_security.c )
+  s.files += %w( src/core/tsi/transport_security.c )
   s.files += %w( src/core/ext/transport/chttp2/server/chttp2_server.c )
   s.files += %w( src/core/ext/transport/chttp2/client/secure/secure_channel_create.c )
   s.files += %w( src/core/ext/client_channel/channel_connectivity.c )
@@ -577,6 +584,9 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/nanopb/pb_encode.c )
   s.files += %w( src/core/ext/lb_policy/pick_first/pick_first.c )
   s.files += %w( src/core/ext/lb_policy/round_robin/round_robin.c )
+  s.files += %w( src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c )
+  s.files += %w( src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c )
+  s.files += %w( src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c )
   s.files += %w( src/core/ext/resolver/dns/native/dns_resolver.c )
   s.files += %w( src/core/ext/resolver/sockaddr/sockaddr_resolver.c )
   s.files += %w( src/core/ext/load_reporting/load_reporting.c )
@@ -1030,4 +1040,77 @@ Gem::Specification.new do |s|
   s.files += %w( third_party/zlib/trees.c )
   s.files += %w( third_party/zlib/uncompr.c )
   s.files += %w( third_party/zlib/zutil.c )
+  s.files += %w( third_party/cares/cares/ares.h )
+  s.files += %w( third_party/cares/cares/ares_data.h )
+  s.files += %w( third_party/cares/cares/ares_dns.h )
+  s.files += %w( third_party/cares/cares/ares_getenv.h )
+  s.files += %w( third_party/cares/cares/ares_getopt.h )
+  s.files += %w( third_party/cares/cares/ares_inet_net_pton.h )
+  s.files += %w( third_party/cares/cares/ares_iphlpapi.h )
+  s.files += %w( third_party/cares/cares/ares_ipv6.h )
+  s.files += %w( third_party/cares/cares/ares_library_init.h )
+  s.files += %w( third_party/cares/cares/ares_llist.h )
+  s.files += %w( third_party/cares/cares/ares_nowarn.h )
+  s.files += %w( third_party/cares/cares/ares_platform.h )
+  s.files += %w( third_party/cares/cares/ares_private.h )
+  s.files += %w( third_party/cares/cares/ares_rules.h )
+  s.files += %w( third_party/cares/cares/ares_setup.h )
+  s.files += %w( third_party/cares/cares/ares_strcasecmp.h )
+  s.files += %w( third_party/cares/cares/ares_strdup.h )
+  s.files += %w( third_party/cares/cares/ares_version.h )
+  s.files += %w( third_party/cares/cares/bitncmp.h )
+  s.files += %w( third_party/cares/cares/config-win32.h )
+  s.files += %w( third_party/cares/cares/setup_once.h )
+  s.files += %w( third_party/cares/ares_build.h )
+  s.files += %w( third_party/cares/config_linux/ares_config.h )
+  s.files += %w( third_party/cares/config_darwin/ares_config.h )
+  s.files += %w( third_party/cares/cares/ares__close_sockets.c )
+  s.files += %w( third_party/cares/cares/ares__get_hostent.c )
+  s.files += %w( third_party/cares/cares/ares__read_line.c )
+  s.files += %w( third_party/cares/cares/ares__timeval.c )
+  s.files += %w( third_party/cares/cares/ares_cancel.c )
+  s.files += %w( third_party/cares/cares/ares_create_query.c )
+  s.files += %w( third_party/cares/cares/ares_data.c )
+  s.files += %w( third_party/cares/cares/ares_destroy.c )
+  s.files += %w( third_party/cares/cares/ares_expand_name.c )
+  s.files += %w( third_party/cares/cares/ares_expand_string.c )
+  s.files += %w( third_party/cares/cares/ares_fds.c )
+  s.files += %w( third_party/cares/cares/ares_free_hostent.c )
+  s.files += %w( third_party/cares/cares/ares_free_string.c )
+  s.files += %w( third_party/cares/cares/ares_getenv.c )
+  s.files += %w( third_party/cares/cares/ares_gethostbyaddr.c )
+  s.files += %w( third_party/cares/cares/ares_gethostbyname.c )
+  s.files += %w( third_party/cares/cares/ares_getnameinfo.c )
+  s.files += %w( third_party/cares/cares/ares_getopt.c )
+  s.files += %w( third_party/cares/cares/ares_getsock.c )
+  s.files += %w( third_party/cares/cares/ares_init.c )
+  s.files += %w( third_party/cares/cares/ares_library_init.c )
+  s.files += %w( third_party/cares/cares/ares_llist.c )
+  s.files += %w( third_party/cares/cares/ares_mkquery.c )
+  s.files += %w( third_party/cares/cares/ares_nowarn.c )
+  s.files += %w( third_party/cares/cares/ares_options.c )
+  s.files += %w( third_party/cares/cares/ares_parse_a_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_aaaa_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_mx_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_naptr_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_ns_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_ptr_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_soa_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_srv_reply.c )
+  s.files += %w( third_party/cares/cares/ares_parse_txt_reply.c )
+  s.files += %w( third_party/cares/cares/ares_platform.c )
+  s.files += %w( third_party/cares/cares/ares_process.c )
+  s.files += %w( third_party/cares/cares/ares_query.c )
+  s.files += %w( third_party/cares/cares/ares_search.c )
+  s.files += %w( third_party/cares/cares/ares_send.c )
+  s.files += %w( third_party/cares/cares/ares_strcasecmp.c )
+  s.files += %w( third_party/cares/cares/ares_strdup.c )
+  s.files += %w( third_party/cares/cares/ares_strerror.c )
+  s.files += %w( third_party/cares/cares/ares_timeout.c )
+  s.files += %w( third_party/cares/cares/ares_version.c )
+  s.files += %w( third_party/cares/cares/ares_writev.c )
+  s.files += %w( third_party/cares/cares/bitncmp.c )
+  s.files += %w( third_party/cares/cares/inet_net_pton.c )
+  s.files += %w( third_party/cares/cares/inet_ntop.c )
+  s.files += %w( third_party/cares/cares/windows_port.c )
 end
diff --git a/include/grpc++/impl/codegen/async_stream.h b/include/grpc++/impl/codegen/async_stream.h
index 1a5cbbd45daf37a27967f2692760cb48bd2e65f6..8f529895cac567d099da3b8c594b88591dc8b204 100644
--- a/include/grpc++/impl/codegen/async_stream.h
+++ b/include/grpc++/impl/codegen/async_stream.h
@@ -101,6 +101,39 @@ class AsyncWriterInterface {
   /// \param[in] msg The message to be written.
   /// \param[in] tag The tag identifying the operation.
   virtual void Write(const W& msg, void* tag) = 0;
+
+  /// Request the writing of \a msg using WriteOptions \a options with
+  /// identifying tag \a tag.
+  ///
+  /// Only one write may be outstanding at any given time. This means that
+  /// after calling Write, one must wait to receive \a tag from the completion
+  /// queue BEFORE calling Write again.
+  /// WriteOptions \a options is used to set the write options of this message.
+  /// This is thread-safe with respect to \a Read
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void Write(const W& msg, WriteOptions options, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with the writing
+  /// of trailing metadata, using WriteOptions \a options with identifying tag
+  /// \a tag.
+  ///
+  /// For client, WriteLast is equivalent of performing Write and WritesDone in
+  /// a single step.
+  /// For server, WriteLast buffers the \a msg. The writing of \a msg is held
+  /// until Finish is called, where \a msg and trailing metadata are coalesced
+  /// and write is initiated. Note that WriteLast can only buffer \a msg up to
+  /// the flow control window size. If \a msg size is larger than the window
+  /// size, it will be sent on wire without buffering.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] tag The tag identifying the operation.
+  void WriteLast(const W& msg, WriteOptions options, void* tag) {
+    Write(msg, options.set_last_message(), tag);
+  }
 };
 
 template <class R>
@@ -183,11 +216,17 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
       : context_(context), call_(channel->CreateCall(method, context, cq)) {
     finish_ops_.RecvMessage(response);
     finish_ops_.AllowNoMessage();
-
-    init_ops_.set_output_tag(tag);
-    init_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                  context->initial_metadata_flags());
-    call_.PerformOps(&init_ops_);
+    // if corked bit is set in context, we buffer up the initial metadata to
+    // coalesce with later message to be sent. No op is performed.
+    if (context_->initial_metadata_corked_) {
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+    } else {
+      write_ops_.set_output_tag(tag);
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+      call_.PerformOps(&write_ops_);
+    }
   }
 
   void ReadInitialMetadata(void* tag) override {
@@ -205,10 +244,21 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
     call_.PerformOps(&write_ops_);
   }
 
+  void Write(const W& msg, WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
   void WritesDone(void* tag) override {
-    writes_done_ops_.set_output_tag(tag);
-    writes_done_ops_.ClientSendClose();
-    call_.PerformOps(&writes_done_ops_);
+    write_ops_.set_output_tag(tag);
+    write_ops_.ClientSendClose();
+    call_.PerformOps(&write_ops_);
   }
 
   void Finish(Status* status, void* tag) override {
@@ -223,10 +273,9 @@ class ClientAsyncWriter final : public ClientAsyncWriterInterface<W> {
  private:
   ClientContext* context_;
   Call call_;
-  CallOpSet<CallOpSendInitialMetadata> init_ops_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
-  CallOpSet<CallOpSendMessage> write_ops_;
-  CallOpSet<CallOpClientSendClose> writes_done_ops_;
+  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
+      write_ops_;
   CallOpSet<CallOpRecvInitialMetadata, CallOpGenericRecvMessage,
             CallOpClientRecvStatus>
       finish_ops_;
@@ -253,10 +302,17 @@ class ClientAsyncReaderWriter final
                           const RpcMethod& method, ClientContext* context,
                           void* tag)
       : context_(context), call_(channel->CreateCall(method, context, cq)) {
-    init_ops_.set_output_tag(tag);
-    init_ops_.SendInitialMetadata(context->send_initial_metadata_,
-                                  context->initial_metadata_flags());
-    call_.PerformOps(&init_ops_);
+    if (context_->initial_metadata_corked_) {
+      // if corked bit is set in context, we buffer up the initial metadata to
+      // coalesce with later message to be sent. No op is performed.
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+    } else {
+      write_ops_.set_output_tag(tag);
+      write_ops_.SendInitialMetadata(context->send_initial_metadata_,
+                                     context->initial_metadata_flags());
+      call_.PerformOps(&write_ops_);
+    }
   }
 
   void ReadInitialMetadata(void* tag) override {
@@ -283,10 +339,21 @@ class ClientAsyncReaderWriter final
     call_.PerformOps(&write_ops_);
   }
 
+  void Write(const W& msg, WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      write_ops_.ClientSendClose();
+    }
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
   void WritesDone(void* tag) override {
-    writes_done_ops_.set_output_tag(tag);
-    writes_done_ops_.ClientSendClose();
-    call_.PerformOps(&writes_done_ops_);
+    write_ops_.set_output_tag(tag);
+    write_ops_.ClientSendClose();
+    call_.PerformOps(&write_ops_);
   }
 
   void Finish(Status* status, void* tag) override {
@@ -301,11 +368,10 @@ class ClientAsyncReaderWriter final
  private:
   ClientContext* context_;
   Call call_;
-  CallOpSet<CallOpSendInitialMetadata> init_ops_;
   CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
   CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
-  CallOpSet<CallOpSendMessage> write_ops_;
-  CallOpSet<CallOpClientSendClose> writes_done_ops_;
+  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
+      write_ops_;
   CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_;
 };
 
@@ -395,6 +461,20 @@ class ServerAsyncWriterInterface : public ServerAsyncStreamingInterface,
                                    public AsyncWriterInterface<W> {
  public:
   virtual void Finish(const Status& status, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with trailing metadata which
+  /// contains \a status, using WriteOptions options with identifying tag \a
+  /// tag.
+  ///
+  /// WriteAndFinish is equivalent of performing WriteLast and Finish in a
+  /// single step.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] status The Status that server returns to client.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WriteAndFinish(const W& msg, WriteOptions options,
+                              const Status& status, void* tag) = 0;
 };
 
 template <class W>
@@ -418,29 +498,37 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
 
   void Write(const W& msg, void* tag) override {
     write_ops_.set_output_tag(tag);
-    if (!ctx_->sent_initial_metadata_) {
-      write_ops_.SendInitialMetadata(ctx_->initial_metadata_,
-                                     ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        write_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
+    EnsureInitialMetadataSent(&write_ops_);
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
+  void Write(const W& msg, WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+
+    EnsureInitialMetadataSent(&write_ops_);
+    // TODO(ctiller): don't assert
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void WriteAndFinish(const W& msg, WriteOptions options, const Status& status,
+                      void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    options.set_buffer_hint();
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    write_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
+    call_.PerformOps(&write_ops_);
+  }
+
   void Finish(const Status& status, void* tag) override {
     finish_ops_.set_output_tag(tag);
-    if (!ctx_->sent_initial_metadata_) {
-      finish_ops_.SendInitialMetadata(ctx_->initial_metadata_,
-                                      ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        finish_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
+    EnsureInitialMetadataSent(&finish_ops_);
     finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
     call_.PerformOps(&finish_ops_);
   }
@@ -448,10 +536,24 @@ class ServerAsyncWriter final : public ServerAsyncWriterInterface<W> {
  private:
   void BindCall(Call* call) override { call_ = *call; }
 
+  template <class T>
+  void EnsureInitialMetadataSent(T* ops) {
+    if (!ctx_->sent_initial_metadata_) {
+      ops->SendInitialMetadata(ctx_->initial_metadata_,
+                               ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ops->set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+  }
+
   Call call_;
   ServerContext* ctx_;
   CallOpSet<CallOpSendInitialMetadata> meta_ops_;
-  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_;
+  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+            CallOpServerSendStatus>
+      write_ops_;
   CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
 };
 
@@ -462,6 +564,20 @@ class ServerAsyncReaderWriterInterface : public ServerAsyncStreamingInterface,
                                          public AsyncReaderInterface<R> {
  public:
   virtual void Finish(const Status& status, void* tag) = 0;
+
+  /// Request the writing of \a msg and coalesce it with trailing metadata which
+  /// contains \a status, using WriteOptions options with identifying tag \a
+  /// tag.
+  ///
+  /// WriteAndFinish is equivalent of performing WriteLast and Finish in a
+  /// single step.
+  ///
+  /// \param[in] msg The message to be written.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  /// \param[in] status The Status that server returns to client.
+  /// \param[in] tag The tag identifying the operation.
+  virtual void WriteAndFinish(const W& msg, WriteOptions options,
+                              const Status& status, void* tag) = 0;
 };
 
 template <class W, class R>
@@ -492,29 +608,36 @@ class ServerAsyncReaderWriter final
 
   void Write(const W& msg, void* tag) override {
     write_ops_.set_output_tag(tag);
-    if (!ctx_->sent_initial_metadata_) {
-      write_ops_.SendInitialMetadata(ctx_->initial_metadata_,
-                                     ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        write_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
+    EnsureInitialMetadataSent(&write_ops_);
     // TODO(ctiller): don't assert
     GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg).ok());
     call_.PerformOps(&write_ops_);
   }
 
+  void Write(const W& msg, WriteOptions options, void* tag) override {
+    write_ops_.set_output_tag(tag);
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
+    EnsureInitialMetadataSent(&write_ops_);
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    call_.PerformOps(&write_ops_);
+  }
+
+  void WriteAndFinish(const W& msg, WriteOptions options, const Status& status,
+                      void* tag) override {
+    write_ops_.set_output_tag(tag);
+    EnsureInitialMetadataSent(&write_ops_);
+    options.set_buffer_hint();
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(msg, options).ok());
+    write_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
+    call_.PerformOps(&write_ops_);
+  }
+
   void Finish(const Status& status, void* tag) override {
     finish_ops_.set_output_tag(tag);
-    if (!ctx_->sent_initial_metadata_) {
-      finish_ops_.SendInitialMetadata(ctx_->initial_metadata_,
-                                      ctx_->initial_metadata_flags());
-      if (ctx_->compression_level_set()) {
-        finish_ops_.set_compression_level(ctx_->compression_level());
-      }
-      ctx_->sent_initial_metadata_ = true;
-    }
+    EnsureInitialMetadataSent(&finish_ops_);
+
     finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
     call_.PerformOps(&finish_ops_);
   }
@@ -524,11 +647,25 @@ class ServerAsyncReaderWriter final
 
   void BindCall(Call* call) override { call_ = *call; }
 
+  template <class T>
+  void EnsureInitialMetadataSent(T* ops) {
+    if (!ctx_->sent_initial_metadata_) {
+      ops->SendInitialMetadata(ctx_->initial_metadata_,
+                               ctx_->initial_metadata_flags());
+      if (ctx_->compression_level_set()) {
+        ops->set_compression_level(ctx_->compression_level());
+      }
+      ctx_->sent_initial_metadata_ = true;
+    }
+  }
+
   Call call_;
   ServerContext* ctx_;
   CallOpSet<CallOpSendInitialMetadata> meta_ops_;
   CallOpSet<CallOpRecvMessage<R>> read_ops_;
-  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_;
+  CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+            CallOpServerSendStatus>
+      write_ops_;
   CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
 };
 
diff --git a/include/grpc++/impl/codegen/call.h b/include/grpc++/impl/codegen/call.h
index 19a5ca2b2eead03e22543717fb7ea36812c57610..a3f2be6bb1e32a6e003254c3cdecac1ba0bbf249 100644
--- a/include/grpc++/impl/codegen/call.h
+++ b/include/grpc++/impl/codegen/call.h
@@ -84,8 +84,9 @@ inline grpc_metadata* FillMetadataArray(
 /// Per-message write options.
 class WriteOptions {
  public:
-  WriteOptions() : flags_(0) {}
-  WriteOptions(const WriteOptions& other) : flags_(other.flags_) {}
+  WriteOptions() : flags_(0), last_message_(false) {}
+  WriteOptions(const WriteOptions& other)
+      : flags_(other.flags_), last_message_(other.last_message_) {}
 
   /// Clear all flags.
   inline void Clear() { flags_ = 0; }
@@ -141,6 +142,43 @@ class WriteOptions {
   /// \sa GRPC_WRITE_BUFFER_HINT
   inline bool get_buffer_hint() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
 
+  /// corked bit: aliases set_buffer_hint currently, with the intent that
+  /// set_buffer_hint will be removed in the future
+  inline WriteOptions& set_corked() {
+    SetBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  inline WriteOptions& clear_corked() {
+    ClearBit(GRPC_WRITE_BUFFER_HINT);
+    return *this;
+  }
+
+  inline bool is_corked() const { return GetBit(GRPC_WRITE_BUFFER_HINT); }
+
+  /// last-message bit: indicates this is the last message in a stream
+  /// client-side:  makes Write the equivalent of performing Write, WritesDone
+  /// in a single step
+  /// server-side:  hold the Write until the service handler returns (sync api)
+  /// or until Finish is called (async api)
+  inline WriteOptions& set_last_message() {
+    last_message_ = true;
+    return *this;
+  }
+
+  /// Clears flag indicating that this is the last message in a stream,
+  /// disabling coalescing.
+  inline WriteOptions& clear_last_messsage() {
+    last_message_ = false;
+    return *this;
+  }
+
+  /// Get value for the flag indicating that this is the last message, and
+  /// should be coalesced with trailing metadata.
+  ///
+  /// \sa GRPC_WRITE_LAST_MESSAGE
+  bool is_last_message() const { return last_message_; }
+
   WriteOptions& operator=(const WriteOptions& rhs) {
     flags_ = rhs.flags_;
     return *this;
@@ -154,6 +192,7 @@ class WriteOptions {
   bool GetBit(const uint32_t mask) const { return (flags_ & mask) != 0; }
 
   uint32_t flags_;
+  bool last_message_;
 };
 
 /// Default argument for CallOpSet. I is unused by the class, but can be
@@ -224,7 +263,7 @@ class CallOpSendMessage {
   /// after use.
   template <class M>
   Status SendMessage(const M& message,
-                     const WriteOptions& options) GRPC_MUST_USE_RESULT;
+                     WriteOptions options) GRPC_MUST_USE_RESULT;
 
   template <class M>
   Status SendMessage(const M& message) GRPC_MUST_USE_RESULT;
@@ -252,8 +291,7 @@ class CallOpSendMessage {
 };
 
 template <class M>
-Status CallOpSendMessage::SendMessage(const M& message,
-                                      const WriteOptions& options) {
+Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) {
   write_options_ = options;
   return SerializationTraits<M>::Serialize(message, &send_buf_, &own_buf_);
 }
diff --git a/include/grpc++/impl/codegen/client_context.h b/include/grpc++/impl/codegen/client_context.h
index b91c7f65d434749447ee5fcca10d622f59925ef5..3c50e6ba9d4bddd4de822ced0e74e25b30914927 100644
--- a/include/grpc++/impl/codegen/client_context.h
+++ b/include/grpc++/impl/codegen/client_context.h
@@ -281,6 +281,17 @@ class ClientContext {
   /// \param algorithm The compression algorithm used for the client call.
   void set_compression_algorithm(grpc_compression_algorithm algorithm);
 
+  /// Flag whether the initial metadata should be \a corked
+  ///
+  /// If \a corked is true, then the initial metadata will be colasced with the
+  /// write of first message in the stream.
+  ///
+  /// \param corked The flag indicating whether the initial metadata is to be
+  /// corked or not.
+  void set_initial_metadata_corked(bool corked) {
+    initial_metadata_corked_ = corked;
+  }
+
   /// Return the peer uri in a string.
   ///
   /// \warning This value is never authenticated or subject to any security
@@ -357,7 +368,8 @@ class ClientContext {
            (cacheable_ ? GRPC_INITIAL_METADATA_CACHEABLE_REQUEST : 0) |
            (wait_for_ready_explicitly_set_
                 ? GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET
-                : 0);
+                : 0) |
+           (initial_metadata_corked_ ? GRPC_INITIAL_METADATA_CORKED : 0);
   }
 
   grpc::string authority() { return authority_; }
@@ -384,6 +396,7 @@ class ClientContext {
   PropagationOptions propagation_options_;
 
   grpc_compression_algorithm compression_algorithm_;
+  bool initial_metadata_corked_;
 };
 
 }  // namespace grpc
diff --git a/include/grpc++/impl/codegen/grpc_library.h b/include/grpc++/impl/codegen/grpc_library.h
index 2b11aff2149b02ecc301ba1059e9fa09b7621e3c..3735d04e8c17a3f2ff87f30ec5cd0edaba69dfaf 100644
--- a/include/grpc++/impl/codegen/grpc_library.h
+++ b/include/grpc++/impl/codegen/grpc_library.h
@@ -51,18 +51,26 @@ extern GrpcLibraryInterface* g_glip;
 /// Classes that require gRPC to be initialized should inherit from this class.
 class GrpcLibraryCodegen {
  public:
-  GrpcLibraryCodegen() {
-    GPR_CODEGEN_ASSERT(g_glip &&
-                       "gRPC library not initialized. See "
-                       "grpc::internal::GrpcLibraryInitializer.");
-    g_glip->init();
+  GrpcLibraryCodegen(bool call_grpc_init = true) : grpc_init_called_(false) {
+    if (call_grpc_init) {
+      GPR_CODEGEN_ASSERT(g_glip &&
+                         "gRPC library not initialized. See "
+                         "grpc::internal::GrpcLibraryInitializer.");
+      g_glip->init();
+      grpc_init_called_ = true;
+    }
   }
   virtual ~GrpcLibraryCodegen() {
-    GPR_CODEGEN_ASSERT(g_glip &&
-                       "gRPC library not initialized. See "
-                       "grpc::internal::GrpcLibraryInitializer.");
-    g_glip->shutdown();
+    if (grpc_init_called_) {
+      GPR_CODEGEN_ASSERT(g_glip &&
+                         "gRPC library not initialized. See "
+                         "grpc::internal::GrpcLibraryInitializer.");
+      g_glip->shutdown();
+    }
   }
+
+ private:
+  bool grpc_init_called_;
 };
 
 }  // namespace grpc
diff --git a/include/grpc++/impl/codegen/server_context.h b/include/grpc++/impl/codegen/server_context.h
index bf9a9b6f1a52b52eb4bf3262cd6e7334cba1e4ce..91f0be06e727968df759844a4aab4e6e94767d4f 100644
--- a/include/grpc++/impl/codegen/server_context.h
+++ b/include/grpc++/impl/codegen/server_context.h
@@ -39,7 +39,6 @@
 #include <vector>
 
 #include <grpc/impl/codegen/compression_types.h>
-#include <grpc/load_reporting.h>
 
 #include <grpc++/impl/codegen/config.h>
 #include <grpc++/impl/codegen/create_auth_context.h>
diff --git a/include/grpc++/impl/codegen/sync_stream.h b/include/grpc++/impl/codegen/sync_stream.h
index 4d9b074e95f92b8db5a7641b277813056cf5dfd1..ae3b8e441d1edc21266e5cd92232a34f08ad2dbb 100644
--- a/include/grpc++/impl/codegen/sync_stream.h
+++ b/include/grpc++/impl/codegen/sync_stream.h
@@ -100,22 +100,40 @@ class WriterInterface {
  public:
   virtual ~WriterInterface() {}
 
-  /// Blocking write \a msg to the stream with options.
+  /// Blocking write \a msg to the stream with WriteOptions \a options.
   /// This is thread-safe with respect to \a Read
   ///
   /// \param msg The message to be written to the stream.
-  /// \param options Options affecting the write operation.
+  /// \param options The WriteOptions affecting the write operation.
   ///
   /// \return \a true on success, \a false when the stream has been closed.
-  virtual bool Write(const W& msg, const WriteOptions& options) = 0;
+  virtual bool Write(const W& msg, WriteOptions options) = 0;
 
-  /// Blocking write \a msg to the stream with default options.
+  /// Blocking write \a msg to the stream with default write options.
   /// This is thread-safe with respect to \a Read
   ///
   /// \param msg The message to be written to the stream.
   ///
   /// \return \a true on success, \a false when the stream has been closed.
   inline bool Write(const W& msg) { return Write(msg, WriteOptions()); }
+
+  /// Write \a msg and coalesce it with the writing of trailing metadata, using
+  /// WriteOptions \a options.
+  ///
+  /// For client, WriteLast is equivalent of performing Write and WritesDone in
+  /// a single step. \a msg and trailing metadata are coalesced and sent on wire
+  /// by calling this function.
+  /// For server, WriteLast buffers the \a msg. The writing of \a msg is held
+  /// until the service handler returns, where \a msg and trailing metadata are
+  /// coalesced and sent on wire. Note that WriteLast can only buffer \a msg up
+  /// to the flow control window size. If \a msg size is larger than the window
+  /// size, it will be sent on wire without buffering.
+  ///
+  /// \param[in] msg The message to be written to the stream.
+  /// \param[in] options The WriteOptions to be used to write this message.
+  void WriteLast(const W& msg, WriteOptions options) {
+    Write(msg, options.set_last_message());
+  }
 };
 
 /// Client-side interface for streaming reads of message of type \a R.
@@ -213,11 +231,13 @@ class ClientWriter : public ClientWriterInterface<W> {
     finish_ops_.RecvMessage(response);
     finish_ops_.AllowNoMessage();
 
-    CallOpSet<CallOpSendInitialMetadata> ops;
-    ops.SendInitialMetadata(context->send_initial_metadata_,
-                            context->initial_metadata_flags());
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);
+    if (!context_->initial_metadata_corked_) {
+      CallOpSet<CallOpSendInitialMetadata> ops;
+      ops.SendInitialMetadata(context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
   }
 
   void WaitForInitialMetadata() {
@@ -230,11 +250,24 @@ class ClientWriter : public ClientWriterInterface<W> {
   }
 
   using WriterInterface<W>::Write;
-  bool Write(const W& msg, const WriteOptions& options) override {
-    CallOpSet<CallOpSendMessage> ops;
+  bool Write(const W& msg, WriteOptions options) override {
+    CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+              CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
     if (!ops.SendMessage(msg, options).ok()) {
       return false;
     }
+
     call_.PerformOps(&ops);
     return cq_.Pluck(&ops);
   }
@@ -293,11 +326,13 @@ class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
   ClientReaderWriter(ChannelInterface* channel, const RpcMethod& method,
                      ClientContext* context)
       : context_(context), call_(channel->CreateCall(method, context, &cq_)) {
-    CallOpSet<CallOpSendInitialMetadata> ops;
-    ops.SendInitialMetadata(context->send_initial_metadata_,
-                            context->initial_metadata_flags());
-    call_.PerformOps(&ops);
-    cq_.Pluck(&ops);
+    if (!context_->initial_metadata_corked_) {
+      CallOpSet<CallOpSendInitialMetadata> ops;
+      ops.SendInitialMetadata(context->send_initial_metadata_,
+                              context->initial_metadata_flags());
+      call_.PerformOps(&ops);
+      cq_.Pluck(&ops);
+    }
   }
 
   void WaitForInitialMetadata() override {
@@ -325,9 +360,24 @@ class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
   }
 
   using WriterInterface<W>::Write;
-  bool Write(const W& msg, const WriteOptions& options) override {
-    CallOpSet<CallOpSendMessage> ops;
-    if (!ops.SendMessage(msg, options).ok()) return false;
+  bool Write(const W& msg, WriteOptions options) override {
+    CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
+              CallOpClientSendClose>
+        ops;
+
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+      ops.ClientSendClose();
+    }
+    if (context_->initial_metadata_corked_) {
+      ops.SendInitialMetadata(context_->send_initial_metadata_,
+                              context_->initial_metadata_flags());
+      context_->set_initial_metadata_corked(false);
+    }
+    if (!ops.SendMessage(msg, options).ok()) {
+      return false;
+    }
+
     call_.PerformOps(&ops);
     return cq_.Pluck(&ops);
   }
@@ -423,7 +473,10 @@ class ServerWriter final : public ServerWriterInterface<W> {
   }
 
   using WriterInterface<W>::Write;
-  bool Write(const W& msg, const WriteOptions& options) override {
+  bool Write(const W& msg, WriteOptions options) override {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
     CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> ops;
     if (!ops.SendMessage(msg, options).ok()) {
       return false;
@@ -485,7 +538,10 @@ class ServerReaderWriterBody final {
     return call_->cq()->Pluck(&ops) && ops.got_message;
   }
 
-  bool Write(const W& msg, const WriteOptions& options) {
+  bool Write(const W& msg, WriteOptions options) {
+    if (options.is_last_message()) {
+      options.set_buffer_hint();
+    }
     CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> ops;
     if (!ops.SendMessage(msg, options).ok()) {
       return false;
@@ -523,7 +579,7 @@ class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> {
   bool Read(R* msg) override { return body_.Read(msg); }
 
   using WriterInterface<W>::Write;
-  bool Write(const W& msg, const WriteOptions& options) override {
+  bool Write(const W& msg, WriteOptions options) override {
     return body_.Write(msg, options);
   }
 
@@ -562,8 +618,7 @@ class ServerUnaryStreamer final
   }
 
   using WriterInterface<ResponseType>::Write;
-  bool Write(const ResponseType& response,
-             const WriteOptions& options) override {
+  bool Write(const ResponseType& response, WriteOptions options) override {
     if (write_done_ || !read_done_) {
       return false;
     }
@@ -604,8 +659,7 @@ class ServerSplitStreamer final
   }
 
   using WriterInterface<ResponseType>::Write;
-  bool Write(const ResponseType& response,
-             const WriteOptions& options) override {
+  bool Write(const ResponseType& response, WriteOptions options) override {
     return read_done_ && body_.Write(response, options);
   }
 
diff --git a/include/grpc++/server.h b/include/grpc++/server.h
index 3e544059747291fb3d352d1aaa9d8df5161242c5..489937712ec16db3c3d234c573870f0fcd4e4065 100644
--- a/include/grpc++/server.h
+++ b/include/grpc++/server.h
@@ -88,6 +88,8 @@ class Server final : public ServerInterface, private GrpcLibraryCodegen {
     virtual void PostSynchronousRequest(ServerContext* context) = 0;
     /// Called before server is started.
     virtual void PreServerStart(Server* server) {}
+    /// Called after a server port is added.
+    virtual void AddPort(Server* server, int port) {}
   };
   /// Set the global callback object. Can only be called once. Does not take
   /// ownership of callbacks, and expects the pointed to object to be alive
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 1b33d48c02342c140530fb2002d354c7901af988..e088435d6cc7647c0b88da1333c1d661ad2777d9 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -93,6 +93,71 @@ GRPCAPI const char *grpc_version_string(void);
 /** Return a string specifying what the 'g' in gRPC stands for */
 GRPCAPI const char *grpc_g_stands_for(void);
 
+/** Specifies the type of APIs to use to pop events from the completion queue */
+typedef enum {
+  /* Events are popped out by calling grpc_completion_queue_next() API ONLY */
+  GRPC_CQ_NEXT = 1,
+
+  /* Events are popped out by calling grpc_completion_queue_pluck() API ONLY */
+  GRPC_CQ_PLUCK
+} grpc_cq_completion_type;
+
+/** Completion queues internally MAY maintain a set of file descriptors in a
+    structure called 'pollset'. This enum specifies if a completion queue has an
+    associated pollset and any restrictions on the type of file descriptors that
+    can be present in the pollset.
+
+    I/O progress can only be made when grpc_completion_queue_next() or
+    grpc_completion_queue_pluck() are called on the completion queue (unless the
+    grpc_cq_polling_type is GRPC_CQ_NON_POLLING) and hence it is very important
+    to actively call these APIs */
+typedef enum {
+  /** The completion queue will have an associated pollset and there is no
+      restriction on the type of file descriptors the pollset may contain */
+  GRPC_CQ_DEFAULT_POLLING,
+
+  /* Similar to GRPC_CQ_DEFAULT_POLLING except that the completion queues will
+     not contain any 'listening file descriptors' (i.e file descriptors used to
+     listen to incoming channels) */
+  GRPC_CQ_NON_LISTENING,
+
+  /* The completion queue will not have an associated pollset. Note that
+     grpc_completion_queue_next() or grpc_completion_queue_pluck() MUST still be
+     called to pop events from the completion queue; it is not required to call
+     them actively to make I/O progress */
+  GRPC_CQ_NON_POLLING
+} grpc_cq_polling_type;
+
+#define GRPC_CQ_CURRENT_VERSION 1
+typedef struct grpc_completion_queue_attributes {
+  /* The version number of this structure. More fields might be added to this
+     structure in future. */
+  int version; /* Set to GRPC_CQ_CURRENT_VERSION */
+
+  grpc_cq_completion_type cq_completion_type;
+
+  grpc_cq_polling_type cq_polling_type;
+} grpc_completion_queue_attributes;
+
+/** The completion queue factory structure is opaque to the callers of grpc */
+typedef struct grpc_completion_queue_factory grpc_completion_queue_factory;
+
+/** Returns the completion queue factory based on the attributes. MAY return a
+    NULL if no factory can be found */
+GRPCAPI const grpc_completion_queue_factory *
+grpc_completion_queue_factory_lookup(
+    const grpc_completion_queue_attributes *attributes);
+
+/** Helper function to create a completion queue with grpc_cq_completion_type
+    of GRPC_CQ_NEXT and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
+GRPCAPI grpc_completion_queue *grpc_completion_queue_create_for_next(
+    void *reserved);
+
+/** Helper function to create a completion queue with grpc_cq_completion_type
+    of GRPC_CQ_PLUCK and grpc_cq_polling_type of GRPC_CQ_DEFAULT_POLLING */
+GRPCAPI grpc_completion_queue *grpc_completion_queue_create_for_pluck(
+    void *reserved);
+
 /** Create a completion queue */
 GRPCAPI grpc_completion_queue *grpc_completion_queue_create(void *reserved);
 
diff --git a/include/grpc/impl/codegen/atm_gcc_atomic.h b/include/grpc/impl/codegen/atm_gcc_atomic.h
index 4bd3b257413831be89dba126b2c2f976f8d40e99..a486258c77f4fedd95614b5d5df704d56775ce9c 100644
--- a/include/grpc/impl/codegen/atm_gcc_atomic.h
+++ b/include/grpc/impl/codegen/atm_gcc_atomic.h
@@ -85,6 +85,11 @@ static __inline int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
       p, &o, n, 0, __ATOMIC_RELEASE, __ATOMIC_RELAXED));
 }
 
+static __inline int gpr_atm_full_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
+  return GPR_ATM_INC_CAS_THEN(__atomic_compare_exchange_n(
+      p, &o, n, 0, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED));
+}
+
 #define gpr_atm_full_xchg(p, n) \
   GPR_ATM_INC_CAS_THEN(__atomic_exchange_n((p), (n), __ATOMIC_ACQ_REL))
 
diff --git a/include/grpc/impl/codegen/atm_gcc_sync.h b/include/grpc/impl/codegen/atm_gcc_sync.h
index 9aa2b43189ffd0bef4c60335b8bfff64a1c10223..946545a671d875504eeedd0eb412446a4eba9047 100644
--- a/include/grpc/impl/codegen/atm_gcc_sync.h
+++ b/include/grpc/impl/codegen/atm_gcc_sync.h
@@ -83,6 +83,7 @@ static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) {
 #define gpr_atm_no_barrier_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
 #define gpr_atm_acq_cas(p, o, n) (__sync_bool_compare_and_swap((p), (o), (n)))
 #define gpr_atm_rel_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
+#define gpr_atm_full_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n))
 
 static __inline gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n) {
   gpr_atm cur;
diff --git a/include/grpc/impl/codegen/grpc_types.h b/include/grpc/impl/codegen/grpc_types.h
index e5c731304cd7a98ca99d652413bba7a80114c3f3..aa4210b1a767ae5e7ef311759f3ebc866ba5c208 100644
--- a/include/grpc/impl/codegen/grpc_types.h
+++ b/include/grpc/impl/codegen/grpc_types.h
@@ -87,6 +87,9 @@ typedef struct grpc_call grpc_call;
 /** The Socket Mutator interface allows changes on socket options */
 typedef struct grpc_socket_mutator grpc_socket_mutator;
 
+/** The Socket Factory interface creates and binds sockets */
+typedef struct grpc_socket_factory grpc_socket_factory;
+
 /** Type specifier for grpc_arg */
 typedef enum {
   GRPC_ARG_STRING,
@@ -160,6 +163,15 @@ typedef struct {
 /** Maximum message length that the channel can send. Int valued, bytes.
     -1 means unlimited. */
 #define GRPC_ARG_MAX_SEND_MESSAGE_LENGTH "grpc.max_send_message_length"
+/** Maximum time that a channel may have no outstanding rpcs. Int valued,
+    milliseconds. INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_IDLE_MS "grpc.max_connection_idle_ms"
+/** Maximum time that a channel may exist. Int valued, milliseconds. INT_MAX
+   means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_MS "grpc.max_connection_age_ms"
+/** Grace period after the chennel reaches its max age. Int valued,
+   milliseconds. INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS "grpc.max_connection_age_grace_ms"
 /** Initial sequence number for http2 transports. Int valued. */
 #define GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER \
   "grpc.http2.initial_sequence_number"
@@ -195,14 +207,14 @@ typedef struct {
 #define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
 /** After a duration of this time the client pings the server to see if the
     transport is still alive. Int valued, seconds. */
-#define GRPC_ARG_HTTP2_KEEPALIVE_TIME "grpc.http2.keepalive_time"
+#define GRPC_ARG_CLIENT_KEEPALIVE_TIME_S "grpc.client_keepalive_time"
 /** After waiting for a duration of this time, if the client does not receive
     the ping ack, it will close the transport. Int valued, seconds. */
-#define GRPC_ARG_HTTP2_KEEPALIVE_TIMEOUT "grpc.http2.keepalive_timeout"
+#define GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S "grpc.client_keepalive_timeout"
 /** Is it permissible to send keepalive pings without any outstanding streams.
     Int valued, 0(false)/1(true). */
-#define GRPC_ARG_HTTP2_KEEPALIVE_PERMIT_WITHOUT_CALLS \
-  "grpc.http2.keepalive_permit_without_calls"
+#define GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS \
+  "grpc.keepalive_permit_without_calls"
 /** Default authority to pass if none specified on call construction. A string.
  * */
 #define GRPC_ARG_DEFAULT_AUTHORITY "grpc.default_authority"
@@ -240,6 +252,8 @@ typedef struct {
 #define GRPC_ARG_LB_POLICY_NAME "grpc.lb_policy_name"
 /** The grpc_socket_mutator instance that set the socket options. A pointer. */
 #define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
+/** The grpc_socket_factory instance to create and bind sockets. A pointer. */
+#define GRPC_ARG_SOCKET_FACTORY "grpc.socket_factory"
 /** If non-zero, Cronet transport will coalesce packets to fewer frames when
  * possible. */
 #define GRPC_ARG_USE_CRONET_PACKET_COALESCING \
@@ -311,13 +325,16 @@ typedef enum grpc_call_error {
 /** Signal that GRPC_INITIAL_METADATA_WAIT_FOR_READY was explicitly set
     by the calling application. */
 #define GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET (0x00000080u)
+/** Signal that the initial metadata should be corked */
+#define GRPC_INITIAL_METADATA_CORKED (0x00000100u)
 
 /** Mask of all valid flags */
-#define GRPC_INITIAL_METADATA_USED_MASK       \
-  (GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST | \
-   GRPC_INITIAL_METADATA_WAIT_FOR_READY |     \
-   GRPC_INITIAL_METADATA_CACHEABLE_REQUEST |  \
-   GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET)
+#define GRPC_INITIAL_METADATA_USED_MASK                  \
+  (GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST |            \
+   GRPC_INITIAL_METADATA_WAIT_FOR_READY |                \
+   GRPC_INITIAL_METADATA_CACHEABLE_REQUEST |             \
+   GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET | \
+   GRPC_INITIAL_METADATA_CORKED)
 
 /** A single metadata element */
 typedef struct grpc_metadata {
diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h
index e565cd31d75f6216fe1c3cff90c21352dd5b4c25..086394648fb9d48f3e73045184283464b82d2669 100644
--- a/include/grpc/impl/codegen/port_platform.h
+++ b/include/grpc/impl/codegen/port_platform.h
@@ -364,6 +364,14 @@ typedef unsigned __int64 uint64_t;
    power of two */
 #define GPR_MAX_ALIGNMENT 16
 
+#ifndef GRPC_ARES
+#ifdef GPR_WINDOWS
+#define GRPC_ARES 0
+#else
+#define GRPC_ARES 1
+#endif
+#endif
+
 #ifndef GRPC_MUST_USE_RESULT
 #if defined(__GNUC__) && !defined(__MINGW32__)
 #define GRPC_MUST_USE_RESULT __attribute__((warn_unused_result))
diff --git a/package.json b/package.json
index 8c0854b1d2869cbe04d1c2ad029d312b07b688ca..666e819fb58f29f05791af76240e341cc796e07e 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "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"
+    "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build --library=static_library"
   },
   "bundledDependencies": [
     "node-pre-gyp"
@@ -34,7 +34,8 @@
     "lodash": "^4.15.0",
     "nan": "^2.0.0",
     "node-pre-gyp": "^0.6.0",
-    "protobufjs": "^5.0.0"
+    "protobufjs": "^5.0.0",
+    "cares": "^1.1.5"
   },
   "devDependencies": {
     "async": "^2.0.1",
@@ -52,7 +53,7 @@
     "poisson-process": "^0.2.1"
   },
   "engines": {
-    "node": ">=1.1.0"
+    "node": ">=4"
   },
   "binary": {
     "module_name": "grpc_node",
diff --git a/package.xml b/package.xml
index f096869e4ed266f30d24e8ce4afbef3f1e2177fe..382393cbe59f510c653b9f58c049d1b8b89c08e0 100644
--- a/package.xml
+++ b/package.xml
@@ -85,7 +85,6 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
@@ -166,6 +165,7 @@
     <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/slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/status.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/atm_gcc_atomic.h" role="src" />
@@ -174,7 +174,6 @@
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/gpr_types.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/port_platform.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/impl/codegen/slice.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_generic.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/sync_posix.h" role="src" />
@@ -193,6 +192,7 @@
     <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/max_age_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/algorithm_metadata.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/message_compress.h" role="src" />
@@ -230,6 +230,7 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/sockaddr_posix.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/sockaddr_utils.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/sockaddr_windows.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/socket_factory_posix.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_mutator.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_utils.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_utils_posix.h" role="src" />
@@ -258,6 +259,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_common.h" role="src" />
     <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/b64.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/percent_encoding.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_hash_table.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_internal.h" role="src" />
@@ -269,6 +271,7 @@
     <file baseinstalldir="/" name="src/core/lib/surface/channel_init.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/channel_stack_type.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/completion_queue.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/surface/completion_queue_factory.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/event_string.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/init.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/lame_client.h" role="src" />
@@ -325,13 +328,12 @@
     <file baseinstalldir="/" name="src/core/lib/security/transport/security_connector.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/transport/security_handshaker.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/transport/tsi_error.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/security/util/b64.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/util/json_util.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/fake_transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_types.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security_interface.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/fake_transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_types.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security.h" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security_interface.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/server/chttp2_server.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/client_channel.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/client_channel_factory.h" role="src" />
@@ -360,6 +362,8 @@
     <file baseinstalldir="/" name="third_party/nanopb/pb_common.h" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_decode.h" role="src" />
     <file baseinstalldir="/" name="third_party/nanopb/pb_encode.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/load_reporting/load_reporting.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/load_reporting/load_reporting_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/census/aggregation.h" role="src" />
@@ -390,6 +394,7 @@
     <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/max_age_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/message_size_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/compression.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/message_compress.c" role="src" />
@@ -426,6 +431,7 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/resolve_address_windows.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/resource_quota.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/sockaddr_utils.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/iomgr/socket_factory_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_mutator.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_utils_common_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_utils_linux.c" role="src" />
@@ -463,6 +469,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_reader.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_string.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_writer.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/slice/b64.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/percent_encoding.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/slice/slice_buffer.c" role="src" />
@@ -481,6 +488,7 @@
     <file baseinstalldir="/" name="src/core/lib/surface/channel_ping.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/channel_stack_type.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/completion_queue.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/surface/completion_queue_factory.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/event_string.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/lame_client.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/metadata_array.c" role="src" />
@@ -544,12 +552,11 @@
     <file baseinstalldir="/" name="src/core/lib/security/transport/security_handshaker.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/transport/server_auth_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/transport/tsi_error.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/security/util/b64.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/util/json_util.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/init_secure.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/fake_transport_security.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/ssl_transport_security.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/tsi/transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/fake_transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/ssl_transport_security.c" role="src" />
+    <file baseinstalldir="/" name="src/core/tsi/transport_security.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/server/chttp2_server.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/client/secure/secure_channel_create.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/client_channel/channel_connectivity.c" role="src" />
@@ -586,6 +593,9 @@
     <file baseinstalldir="/" name="third_party/nanopb/pb_encode.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/lb_policy/pick_first/pick_first.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/lb_policy/round_robin/round_robin.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/resolver/dns/native/dns_resolver.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/resolver/sockaddr/sockaddr_resolver.c" role="src" />
     <file baseinstalldir="/" name="src/core/ext/load_reporting/load_reporting.c" role="src" />
diff --git a/setup.py b/setup.py
index 4d71848bff02933bc4a82f4a8230fd8e88efb1f8..e0506464759d84fd4ff72072269a5a792d552e65 100644
--- a/setup.py
+++ b/setup.py
@@ -52,6 +52,13 @@ PYTHON_STEM = os.path.join('src', 'python', 'grpcio')
 CORE_INCLUDE = ('include', '.',)
 BORINGSSL_INCLUDE = (os.path.join('third_party', 'boringssl', 'include'),)
 ZLIB_INCLUDE = (os.path.join('third_party', 'zlib'),)
+CARES_INCLUDE = (
+    os.path.join('third_party', 'cares'),
+    os.path.join('third_party', 'cares', 'cares'),)
+if 'linux' in sys.platform:
+  CARES_INCLUDE += (os.path.join('third_party', 'cares', 'config_linux'),)
+if 'darwin' in sys.platform:
+  CARES_INCLUDE += (os.path.join('third_party', 'cares', 'config_darwin'),)
 README = os.path.join(PYTHON_STEM, 'README.rst')
 
 # Ensure we're in the proper directory whether or not we're being used by pip.
@@ -136,7 +143,8 @@ CYTHON_HELPER_C_FILES = ()
 CORE_C_FILES = tuple(grpc_core_dependencies.CORE_SOURCE_FILES)
 
 EXTENSION_INCLUDE_DIRECTORIES = (
-    (PYTHON_STEM,) + CORE_INCLUDE + BORINGSSL_INCLUDE + ZLIB_INCLUDE)
+    (PYTHON_STEM,) + CORE_INCLUDE + BORINGSSL_INCLUDE + ZLIB_INCLUDE +
+    CARES_INCLUDE)
 
 EXTENSION_LIBRARIES = ()
 if "linux" in sys.platform:
@@ -150,13 +158,15 @@ DEFINE_MACROS = (
     ('OPENSSL_NO_ASM', 1), ('_WIN32_WINNT', 0x600),
     ('GPR_BACKWARDS_COMPATIBILITY_MODE', 1),)
 if "win32" in sys.platform:
-  DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1),)
+  DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1), ('CARES_STATICLIB', 1),)
   if '64bit' in platform.architecture()[0]:
     DEFINE_MACROS += (('MS_WIN64', 1),)
   elif sys.version_info >= (3, 5):
     # For some reason, this is needed to get access to inet_pton/inet_ntop
     # on msvc, but only for 32 bits
     DEFINE_MACROS += (('NTDDI_VERSION', 0x06000000),)
+else:
+  DEFINE_MACROS += (('HAVE_CONFIG_H', 1),)
 
 LDFLAGS = tuple(EXTRA_LINK_ARGS)
 CFLAGS = tuple(EXTRA_COMPILE_ARGS)
@@ -264,6 +274,10 @@ PACKAGES = setuptools.find_packages(PYTHON_STEM)
 setuptools.setup(
   name='grpcio',
   version=grpc_version.VERSION,
+  description='HTTP/2-based RPC framework',
+  author='The gRPC Authors',
+  author_email='grpc-io@googlegroups.com',
+  url='http://www.grpc.io',
   license=LICENSE,
   long_description=open(README).read(),
   ext_modules=CYTHON_EXTENSION_MODULES,
diff --git a/src/c-ares/CMakeLists.txt b/src/c-ares/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..22acd51048fc4b4401162465141356283fec417e
--- /dev/null
+++ b/src/c-ares/CMakeLists.txt
@@ -0,0 +1,49 @@
+# c-ares cmake file for gRPC
+#
+# This is currently very experimental, and unsupported.
+#
+# 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.
+
+string(TOLOWER ${CMAKE_SYSTEM_NAME} cares_system_name)
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares/cares)
+
+if(${cares_system_name} MATCHES windows)
+  add_definitions(-DCARES_STATICLIB=1)
+  add_definitions(-DWIN32_LEAN_AND_MEAN=1)
+else()
+  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../third_party/cares/config_${cares_system_name})
+  add_definitions(-DHAVE_CONFIG_H=1)
+  add_definitions(-D_GNU_SOURCE=1)
+endif()
+
+file(GLOB lib_sources ../../third_party/cares/cares/*.c)
+add_library(cares ${lib_sources})
diff --git a/src/c-ares/gen_build_yaml.py b/src/c-ares/gen_build_yaml.py
new file mode 100755
index 0000000000000000000000000000000000000000..b2ae971f37213ef5f8306d69eb11ba89667e59fb
--- /dev/null
+++ b/src/c-ares/gen_build_yaml.py
@@ -0,0 +1,149 @@
+#!/usr/bin/env python2.7
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import re
+import os
+import sys
+import yaml
+
+os.chdir(os.path.dirname(sys.argv[0])+'/../..')
+
+out = {}
+
+try:
+  def gen_ares_build(x):
+    subprocess.call("third_party/cares/cares/buildconf", shell=True)
+    subprocess.call("third_party/cares/cares/configure", shell=True)
+
+  def config_platform(x):
+    if 'linux' in sys.platform:
+      return 'src/cares/cares/config_linux/ares_config.h'
+    if 'darwin' in sys.platform:
+      return 'src/cares/cares/config_darwin/ares_config.h'
+    if not os.path.isfile('third_party/cares/cares/ares_config.h'):
+      gen_ares_build(x)
+    return 'third_party/cares/cares/ares_config.h'
+
+  def ares_build(x):
+    if os.path.isfile('src/cares/cares/ares_build.h'):
+      return 'src/cares/cares/ares_build.h'
+    if not os.path.isfile('third_party/cares/cares/ares_build.h'):
+      gen_ares_build(x)
+    return 'third_party/cares/cares/ares_build.h'
+
+  out['libs'] = [{
+      'name': 'ares',
+      'defaults': 'ares',
+      'build': 'private',
+      'language': 'c',
+      'secure': 'no',
+      'src': [
+        "third_party/cares/cares/ares__close_sockets.c",
+        "third_party/cares/cares/ares__get_hostent.c",
+        "third_party/cares/cares/ares__read_line.c",
+        "third_party/cares/cares/ares__timeval.c",
+        "third_party/cares/cares/ares_cancel.c",
+        "third_party/cares/cares/ares_create_query.c",
+        "third_party/cares/cares/ares_data.c",
+        "third_party/cares/cares/ares_destroy.c",
+        "third_party/cares/cares/ares_expand_name.c",
+        "third_party/cares/cares/ares_expand_string.c",
+        "third_party/cares/cares/ares_fds.c",
+        "third_party/cares/cares/ares_free_hostent.c",
+        "third_party/cares/cares/ares_free_string.c",
+        "third_party/cares/cares/ares_getenv.c",
+        "third_party/cares/cares/ares_gethostbyaddr.c",
+        "third_party/cares/cares/ares_gethostbyname.c",
+        "third_party/cares/cares/ares_getnameinfo.c",
+        "third_party/cares/cares/ares_getopt.c",
+        "third_party/cares/cares/ares_getsock.c",
+        "third_party/cares/cares/ares_init.c",
+        "third_party/cares/cares/ares_library_init.c",
+        "third_party/cares/cares/ares_llist.c",
+        "third_party/cares/cares/ares_mkquery.c",
+        "third_party/cares/cares/ares_nowarn.c",
+        "third_party/cares/cares/ares_options.c",
+        "third_party/cares/cares/ares_parse_a_reply.c",
+        "third_party/cares/cares/ares_parse_aaaa_reply.c",
+        "third_party/cares/cares/ares_parse_mx_reply.c",
+        "third_party/cares/cares/ares_parse_naptr_reply.c",
+        "third_party/cares/cares/ares_parse_ns_reply.c",
+        "third_party/cares/cares/ares_parse_ptr_reply.c",
+        "third_party/cares/cares/ares_parse_soa_reply.c",
+        "third_party/cares/cares/ares_parse_srv_reply.c",
+        "third_party/cares/cares/ares_parse_txt_reply.c",
+        "third_party/cares/cares/ares_platform.c",
+        "third_party/cares/cares/ares_process.c",
+        "third_party/cares/cares/ares_query.c",
+        "third_party/cares/cares/ares_search.c",
+        "third_party/cares/cares/ares_send.c",
+        "third_party/cares/cares/ares_strcasecmp.c",
+        "third_party/cares/cares/ares_strdup.c",
+        "third_party/cares/cares/ares_strerror.c",
+        "third_party/cares/cares/ares_timeout.c",
+        "third_party/cares/cares/ares_version.c",
+        "third_party/cares/cares/ares_writev.c",
+        "third_party/cares/cares/bitncmp.c",
+        "third_party/cares/cares/inet_net_pton.c",
+        "third_party/cares/cares/inet_ntop.c",
+        "third_party/cares/cares/windows_port.c",
+      ],
+      'headers': [
+        "third_party/cares/cares/ares.h",
+        "third_party/cares/cares/ares_data.h",
+        "third_party/cares/cares/ares_dns.h",
+        "third_party/cares/cares/ares_getenv.h",
+        "third_party/cares/cares/ares_getopt.h",
+        "third_party/cares/cares/ares_inet_net_pton.h",
+        "third_party/cares/cares/ares_iphlpapi.h",
+        "third_party/cares/cares/ares_ipv6.h",
+        "third_party/cares/cares/ares_library_init.h",
+        "third_party/cares/cares/ares_llist.h",
+        "third_party/cares/cares/ares_nowarn.h",
+        "third_party/cares/cares/ares_platform.h",
+        "third_party/cares/cares/ares_private.h",
+        "third_party/cares/cares/ares_rules.h",
+        "third_party/cares/cares/ares_setup.h",
+        "third_party/cares/cares/ares_strcasecmp.h",
+        "third_party/cares/cares/ares_strdup.h",
+        "third_party/cares/cares/ares_version.h",
+        "third_party/cares/cares/bitncmp.h",
+        "third_party/cares/cares/config-win32.h",
+        "third_party/cares/cares/setup_once.h",
+        "third_party/cares/ares_build.h",
+        "third_party/cares/config_linux/ares_config.h",
+        "third_party/cares/config_darwin/ares_config.h"
+    ],
+  }]
+except:
+  pass
+
+print yaml.dump(out)
diff --git a/src/compiler/README.md b/src/compiler/README.md
index a2f49b3cd5387f90595ac6b77458b67d1b6a15c4..d5684af7ff24e90af441514649141b70d40d9803 100644
--- a/src/compiler/README.md
+++ b/src/compiler/README.md
@@ -1,4 +1,4 @@
-#Overview
+# Overview
 
 This directory contains source code for gRPC protocol buffer compiler (*protoc*) plugins. Along with `protoc`,
 these plugins are used to generate gRPC client and server stubs from `.proto` files.
diff --git a/src/compiler/csharp_generator.cc b/src/compiler/csharp_generator.cc
index cc7a7a96aeab5c31256a2891c362d91446fb8d96..ce1e6b94c3fbaeadd3fdb920f2bc57544c2ed835 100644
--- a/src/compiler/csharp_generator.cc
+++ b/src/compiler/csharp_generator.cc
@@ -203,13 +203,13 @@ std::string GetServerClassName(const ServiceDescriptor *service) {
 std::string GetCSharpMethodType(MethodType method_type) {
   switch (method_type) {
     case METHODTYPE_NO_STREAMING:
-      return "MethodType.Unary";
+      return "grpc::MethodType.Unary";
     case METHODTYPE_CLIENT_STREAMING:
-      return "MethodType.ClientStreaming";
+      return "grpc::MethodType.ClientStreaming";
     case METHODTYPE_SERVER_STREAMING:
-      return "MethodType.ServerStreaming";
+      return "grpc::MethodType.ServerStreaming";
     case METHODTYPE_BIDI_STREAMING:
-      return "MethodType.DuplexStreaming";
+      return "grpc::MethodType.DuplexStreaming";
   }
   GOOGLE_LOG(FATAL) << "Can't get here.";
   return "";
@@ -243,16 +243,19 @@ std::string GetAccessLevel(bool internal_access) {
 std::string GetMethodReturnTypeClient(const MethodDescriptor *method) {
   switch (GetMethodType(method)) {
     case METHODTYPE_NO_STREAMING:
-      return "AsyncUnaryCall<" + GetClassName(method->output_type()) + ">";
+      return "grpc::AsyncUnaryCall<" + GetClassName(method->output_type()) +
+             ">";
     case METHODTYPE_CLIENT_STREAMING:
-      return "AsyncClientStreamingCall<" + GetClassName(method->input_type()) +
-             ", " + GetClassName(method->output_type()) + ">";
+      return "grpc::AsyncClientStreamingCall<" +
+             GetClassName(method->input_type()) + ", " +
+             GetClassName(method->output_type()) + ">";
     case METHODTYPE_SERVER_STREAMING:
-      return "AsyncServerStreamingCall<" + GetClassName(method->output_type()) +
-             ">";
+      return "grpc::AsyncServerStreamingCall<" +
+             GetClassName(method->output_type()) + ">";
     case METHODTYPE_BIDI_STREAMING:
-      return "AsyncDuplexStreamingCall<" + GetClassName(method->input_type()) +
-             ", " + GetClassName(method->output_type()) + ">";
+      return "grpc::AsyncDuplexStreamingCall<" +
+             GetClassName(method->input_type()) + ", " +
+             GetClassName(method->output_type()) + ">";
   }
   GOOGLE_LOG(FATAL) << "Can't get here.";
   return "";
@@ -265,7 +268,7 @@ std::string GetMethodRequestParamServer(const MethodDescriptor *method) {
       return GetClassName(method->input_type()) + " request";
     case METHODTYPE_CLIENT_STREAMING:
     case METHODTYPE_BIDI_STREAMING:
-      return "IAsyncStreamReader<" + GetClassName(method->input_type()) +
+      return "grpc::IAsyncStreamReader<" + GetClassName(method->input_type()) +
              "> requestStream";
   }
   GOOGLE_LOG(FATAL) << "Can't get here.";
@@ -293,8 +296,8 @@ std::string GetMethodResponseStreamMaybe(const MethodDescriptor *method) {
       return "";
     case METHODTYPE_SERVER_STREAMING:
     case METHODTYPE_BIDI_STREAMING:
-      return ", IServerStreamWriter<" + GetClassName(method->output_type()) +
-             "> responseStream";
+      return ", grpc::IServerStreamWriter<" +
+             GetClassName(method->output_type()) + "> responseStream";
   }
   GOOGLE_LOG(FATAL) << "Can't get here.";
   return "";
@@ -325,8 +328,8 @@ void GenerateMarshallerFields(Printer *out, const ServiceDescriptor *service) {
   for (size_t i = 0; i < used_messages.size(); i++) {
     const Descriptor *message = used_messages[i];
     out->Print(
-        "static readonly Marshaller<$type$> $fieldname$ = "
-        "Marshallers.Create((arg) => "
+        "static readonly grpc::Marshaller<$type$> $fieldname$ = "
+        "grpc::Marshallers.Create((arg) => "
         "global::Google.Protobuf.MessageExtensions.ToByteArray(arg), "
         "$type$.Parser.ParseFrom);\n",
         "fieldname", GetMarshallerFieldName(message), "type",
@@ -337,8 +340,8 @@ void GenerateMarshallerFields(Printer *out, const ServiceDescriptor *service) {
 
 void GenerateStaticMethodField(Printer *out, const MethodDescriptor *method) {
   out->Print(
-      "static readonly Method<$request$, $response$> $fieldname$ = new "
-      "Method<$request$, $response$>(\n",
+      "static readonly grpc::Method<$request$, $response$> $fieldname$ = new "
+      "grpc::Method<$request$, $response$>(\n",
       "fieldname", GetMethodFieldName(method), "request",
       GetClassName(method->input_type()), "response",
       GetClassName(method->output_type()));
@@ -389,7 +392,7 @@ void GenerateServerClass(Printer *out, const ServiceDescriptor *service) {
     out->Print(
         "public virtual $returntype$ "
         "$methodname$($request$$response_stream_maybe$, "
-        "ServerCallContext context)\n",
+        "grpc::ServerCallContext context)\n",
         "methodname", method->name(), "returntype",
         GetMethodReturnTypeServer(method), "request",
         GetMethodRequestParamServer(method), "response_stream_maybe",
@@ -397,8 +400,8 @@ void GenerateServerClass(Printer *out, const ServiceDescriptor *service) {
     out->Print("{\n");
     out->Indent();
     out->Print(
-        "throw new RpcException("
-        "new Status(StatusCode.Unimplemented, \"\"));\n");
+        "throw new grpc::RpcException("
+        "new grpc::Status(grpc::StatusCode.Unimplemented, \"\"));\n");
     out->Outdent();
     out->Print("}\n\n");
   }
@@ -410,7 +413,7 @@ void GenerateServerClass(Printer *out, const ServiceDescriptor *service) {
 void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
   out->Print("/// <summary>Client for $servicename$</summary>\n", "servicename",
              GetServiceClassName(service));
-  out->Print("public partial class $name$ : ClientBase<$name$>\n", "name",
+  out->Print("public partial class $name$ : grpc::ClientBase<$name$>\n", "name",
              GetClientClassName(service));
   out->Print("{\n");
   out->Indent();
@@ -421,7 +424,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       "/// <param name=\"channel\">The channel to use to make remote "
       "calls.</param>\n",
       "servicename", GetServiceClassName(service));
-  out->Print("public $name$(Channel channel) : base(channel)\n", "name",
+  out->Print("public $name$(grpc::Channel channel) : base(channel)\n", "name",
              GetClientClassName(service));
   out->Print("{\n");
   out->Print("}\n");
@@ -431,8 +434,9 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       "/// <param name=\"callInvoker\">The callInvoker to use to make remote "
       "calls.</param>\n",
       "servicename", GetServiceClassName(service));
-  out->Print("public $name$(CallInvoker callInvoker) : base(callInvoker)\n",
-             "name", GetClientClassName(service));
+  out->Print(
+      "public $name$(grpc::CallInvoker callInvoker) : base(callInvoker)\n",
+      "name", GetClientClassName(service));
   out->Print("{\n");
   out->Print("}\n");
   out->Print(
@@ -461,7 +465,8 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       // unary calls have an extra synchronous stub method
       GenerateDocCommentClientMethod(out, method, true, false);
       out->Print(
-          "public virtual $response$ $methodname$($request$ request, Metadata "
+          "public virtual $response$ $methodname$($request$ request, "
+          "grpc::Metadata "
           "headers = null, DateTime? deadline = null, CancellationToken "
           "cancellationToken = default(CancellationToken))\n",
           "methodname", method->name(), "request",
@@ -470,7 +475,8 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       out->Print("{\n");
       out->Indent();
       out->Print(
-          "return $methodname$(request, new CallOptions(headers, deadline, "
+          "return $methodname$(request, new grpc::CallOptions(headers, "
+          "deadline, "
           "cancellationToken));\n",
           "methodname", method->name());
       out->Outdent();
@@ -480,7 +486,7 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
       GenerateDocCommentClientMethod(out, method, true, true);
       out->Print(
           "public virtual $response$ $methodname$($request$ request, "
-          "CallOptions options)\n",
+          "grpc::CallOptions options)\n",
           "methodname", method->name(), "request",
           GetClassName(method->input_type()), "response",
           GetClassName(method->output_type()));
@@ -500,7 +506,8 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     }
     GenerateDocCommentClientMethod(out, method, false, false);
     out->Print(
-        "public virtual $returntype$ $methodname$($request_maybe$Metadata "
+        "public virtual $returntype$ "
+        "$methodname$($request_maybe$grpc::Metadata "
         "headers = null, DateTime? deadline = null, CancellationToken "
         "cancellationToken = default(CancellationToken))\n",
         "methodname", method_name, "request_maybe",
@@ -510,7 +517,8 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     out->Indent();
 
     out->Print(
-        "return $methodname$($request_maybe$new CallOptions(headers, deadline, "
+        "return $methodname$($request_maybe$new grpc::CallOptions(headers, "
+        "deadline, "
         "cancellationToken));\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method, true));
@@ -520,7 +528,8 @@ void GenerateClientStub(Printer *out, const ServiceDescriptor *service) {
     // overload taking CallOptions as a param
     GenerateDocCommentClientMethod(out, method, false, true);
     out->Print(
-        "public virtual $returntype$ $methodname$($request_maybe$CallOptions "
+        "public virtual $returntype$ "
+        "$methodname$($request_maybe$grpc::CallOptions "
         "options)\n",
         "methodname", method_name, "request_maybe",
         GetMethodRequestParamMaybe(method), "returntype",
@@ -587,13 +596,13 @@ void GenerateBindServiceMethod(Printer *out, const ServiceDescriptor *service) {
       "/// <param name=\"serviceImpl\">An object implementing the server-side"
       " handling logic.</param>\n");
   out->Print(
-      "public static ServerServiceDefinition BindService($implclass$ "
+      "public static grpc::ServerServiceDefinition BindService($implclass$ "
       "serviceImpl)\n",
       "implclass", GetServerClassName(service));
   out->Print("{\n");
   out->Indent();
 
-  out->Print("return ServerServiceDefinition.CreateBuilder()\n");
+  out->Print("return grpc::ServerServiceDefinition.CreateBuilder()\n");
   out->Indent();
   out->Indent();
   for (int i = 0; i < service->method_count(); i++) {
@@ -681,7 +690,7 @@ grpc::string GetServices(const FileDescriptor *file, bool generate_client,
     out.Print("using System;\n");
     out.Print("using System.Threading;\n");
     out.Print("using System.Threading.Tasks;\n");
-    out.Print("using Grpc.Core;\n");
+    out.Print("using grpc = global::Grpc.Core;\n");
     out.Print("\n");
 
     out.Print("namespace $namespace$ {\n", "namespace", GetFileNamespace(file));
diff --git a/src/compiler/php_generator.cc b/src/compiler/php_generator.cc
index fba8cbaa97b269e701bf9ba13f886fd7622fd62c..7d51d4030135212cfe4265cf3e7577c0811d27a3 100644
--- a/src/compiler/php_generator.cc
+++ b/src/compiler/php_generator.cc
@@ -118,7 +118,7 @@ void PrintService(const ServiceDescriptor *service, Printer *out) {
   out->Print(
       "/**\n * @param string $$hostname hostname\n"
       " * @param array $$opts channel options\n"
-      " * @param Grpc\\Channel $$channel (optional) re-use channel "
+      " * @param \\Grpc\\Channel $$channel (optional) re-use channel "
       "object\n */\n"
       "public function __construct($$hostname, $$opts, "
       "$$channel = null) {\n");
diff --git a/src/core/README.md b/src/core/README.md
index 44c6f247725896b9667c02befcb22e2b4ef34308..130d2652b3990b5cc492b0ff9ad49c4172a6baf0 100644
--- a/src/core/README.md
+++ b/src/core/README.md
@@ -1,4 +1,4 @@
-#Overview
+# Overview
 
 This directory contains source code for C library (a.k.a the *gRPC C core*) that provides all gRPC's core functionality through a low level API. Libraries in other languages in this repository (C++, Ruby,
 Python, PHP, NodeJS, Objective-C) are layered on top of this library.
diff --git a/src/core/ext/census/gen/README.md b/src/core/ext/census/gen/README.md
index fdbac1084cd4a234689fc9c875805c8dc5bb6d8c..d4612bc7c85172c8c5f0062930da5be8dc705ae6 100644
--- a/src/core/ext/census/gen/README.md
+++ b/src/core/ext/census/gen/README.md
@@ -1,6 +1,6 @@
 Files generated for use by Census stats and trace recording subsystem.
 
-#Files
+# Files
 * census.pb.{h,c} - Generated from src/core/ext/census/census.proto, using the
   script `tools/codegen/core/gen_nano_proto.sh src/proto/census/census.proto
   $PWD/src/core/ext/census/gen src/core/ext/census/gen`
diff --git a/src/core/ext/client_channel/client_channel.c b/src/core/ext/client_channel/client_channel.c
index 435a3ab0fe14c2178cd1d357bb98f576c045cf00..25d4400b7d5e1b7070093d4fb1780f6545934904 100644
--- a/src/core/ext/client_channel/client_channel.c
+++ b/src/core/ext/client_channel/client_channel.c
@@ -374,8 +374,7 @@ static void on_resolver_result_changed_locked(grpc_exec_ctx *exec_ctx,
     // resolver actually specified.
     channel_arg =
         grpc_channel_args_find(chand->resolver_result, GRPC_ARG_LB_ADDRESSES);
-    if (channel_arg != NULL) {
-      GPR_ASSERT(channel_arg->type == GRPC_ARG_POINTER);
+    if (channel_arg != NULL && channel_arg->type == GRPC_ARG_POINTER) {
       grpc_lb_addresses *addresses = channel_arg->value.pointer.p;
       bool found_backend_address = false;
       for (size_t i = 0; i < addresses->num_addresses; ++i) {
@@ -643,14 +642,26 @@ static grpc_error *cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
   // 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);
+  if (arg == NULL) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Missing client channel factory in args for client channel filter");
+  }
+  if (arg->type != GRPC_ARG_POINTER) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "client channel factory arg must be a pointer");
+  }
   grpc_client_channel_factory_ref(arg->value.pointer.p);
   chand->client_channel_factory = arg->value.pointer.p;
   // Get server name to resolve, using proxy mapper if needed.
   arg = grpc_channel_args_find(args->channel_args, GRPC_ARG_SERVER_URI);
-  GPR_ASSERT(arg != NULL);
-  GPR_ASSERT(arg->type == GRPC_ARG_STRING);
+  if (arg == NULL) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "Missing server uri in args for client channel filter");
+  }
+  if (arg->type != GRPC_ARG_STRING) {
+    return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
+        "server uri arg must be a string");
+  }
   char *proxy_name = NULL;
   grpc_channel_args *new_args = NULL;
   grpc_proxy_mappers_map_name(exec_ctx, arg->value.string, args->channel_args,
diff --git a/src/core/ext/client_channel/resolver_registry.c b/src/core/ext/client_channel/resolver_registry.c
index 3c5a6fb3fffdf1d7060a40334e38a83759e855f9..0f074a3386cb302adbd69cf3c4b0ee9a7eb506a6 100644
--- a/src/core/ext/client_channel/resolver_registry.c
+++ b/src/core/ext/client_channel/resolver_registry.c
@@ -93,7 +93,6 @@ static grpc_resolver_factory *lookup_factory(const char *name) {
       return g_all_of_the_resolvers[i];
     }
   }
-
   return NULL;
 }
 
diff --git a/src/core/ext/client_channel/subchannel.c b/src/core/ext/client_channel/subchannel.c
index 063c0badffd504078b6c10fae474262e0dd9c2b9..7bd3d70253eedf27760918a3c7b4031b9d17ccb8 100644
--- a/src/core/ext/client_channel/subchannel.c
+++ b/src/core/ext/client_channel/subchannel.c
@@ -360,7 +360,6 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
     for (size_t i = 0; i < c->args->num_args; i++) {
       if (0 == strcmp(c->args->args[i].key,
                       "grpc.testing.fixed_reconnect_backoff_ms")) {
-        GPR_ASSERT(c->args->args[i].type == GRPC_ARG_INTEGER);
         fixed_reconnect_backoff = true;
         initial_backoff_ms = min_backoff_ms = max_backoff_ms =
             grpc_channel_arg_get_integer(
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.c b/src/core/ext/lb_policy/grpclb/grpclb.c
index 601b0e643bd1a636d30ce2ab24295fc56dac2b92..629d81953c9dd6c4c35900ddd6a4492b307f0ad8 100644
--- a/src/core/ext/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/lb_policy/grpclb/grpclb.c
@@ -847,7 +847,9 @@ static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
    * this is the right LB policy to use. */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
-  GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
+  if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
+    return NULL;
+  }
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_grpclb_addrs = 0;
   for (size_t i = 0; i < addresses->num_addresses; ++i) {
diff --git a/src/core/ext/lb_policy/pick_first/pick_first.c b/src/core/ext/lb_policy/pick_first/pick_first.c
index fc65dfdcb9c8442a1232962bdb728c3b143516d8..8c73ea6014195ec90d1b896dffa15d24064332ea 100644
--- a/src/core/ext/lb_policy/pick_first/pick_first.c
+++ b/src/core/ext/lb_policy/pick_first/pick_first.c
@@ -402,7 +402,9 @@ static grpc_lb_policy *create_pick_first(grpc_exec_ctx *exec_ctx,
    * addresses, since we don't know how to handle them. */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
-  GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
+  if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
+    return NULL;
+  }
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
   for (size_t i = 0; i < addresses->num_addresses; i++) {
diff --git a/src/core/ext/lb_policy/round_robin/round_robin.c b/src/core/ext/lb_policy/round_robin/round_robin.c
index a62082a2ffa610456268376c745c1f74ddabddd6..8665b5c6c849118112ee66eb1be1dac7987d0e84 100644
--- a/src/core/ext/lb_policy/round_robin/round_robin.c
+++ b/src/core/ext/lb_policy/round_robin/round_robin.c
@@ -691,7 +691,9 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
    * addresses, since we don't know how to handle them. */
   const grpc_arg *arg =
       grpc_channel_args_find(args->args, GRPC_ARG_LB_ADDRESSES);
-  GPR_ASSERT(arg != NULL && arg->type == GRPC_ARG_POINTER);
+  if (arg == NULL || arg->type != GRPC_ARG_POINTER) {
+    return NULL;
+  }
   grpc_lb_addresses *addresses = arg->value.pointer.p;
   size_t num_addrs = 0;
   for (size_t i = 0; i < addresses->num_addresses; i++) {
diff --git a/src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c b/src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c
new file mode 100644
index 0000000000000000000000000000000000000000..f27da231f5668a36dc6d4de04d1b20945cfbd463
--- /dev/null
+++ b/src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c
@@ -0,0 +1,350 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+#if GRPC_ARES == 1 && !defined(GRPC_UV)
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/string_util.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/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/combiner.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/support/backoff.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
+
+#define GRPC_DNS_MIN_CONNECT_TIMEOUT_SECONDS 1
+#define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1
+#define GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER 1.6
+#define GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS 120
+#define GRPC_DNS_RECONNECT_JITTER 0.2
+
+typedef struct {
+  /** base class: must be first */
+  grpc_resolver base;
+  /** name to resolve (usually the same as target_name) */
+  char *name_to_resolve;
+  /** default port to use */
+  char *default_port;
+  /** channel args. */
+  grpc_channel_args *channel_args;
+  /** pollset_set to drive the name resolution process */
+  grpc_pollset_set *interested_parties;
+
+  /** Closures used by the combiner */
+  grpc_closure dns_ares_on_retry_timer_locked;
+  grpc_closure dns_ares_on_resolved_locked;
+
+  /** Combiner guarding the rest of the state */
+  grpc_combiner *combiner;
+  /** are we currently resolving? */
+  bool resolving;
+  /** which version of the result have we published? */
+  int published_version;
+  /** which version of the result is current? */
+  int resolved_version;
+  /** pending next completion, or NULL */
+  grpc_closure *next_completion;
+  /** target result address for next completion */
+  grpc_channel_args **target_result;
+  /** current (fully resolved) result */
+  grpc_channel_args *resolved_result;
+  /** retry timer */
+  bool have_retry_timer;
+  grpc_timer retry_timer;
+  /** retry backoff state */
+  gpr_backoff backoff_state;
+
+  /** currently resolving addresses */
+  grpc_resolved_addresses *addresses;
+} ares_dns_resolver;
+
+static void dns_ares_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r);
+
+static void dns_ares_start_resolving_locked(grpc_exec_ctx *exec_ctx,
+                                            ares_dns_resolver *r);
+static void dns_ares_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
+                                              ares_dns_resolver *r);
+
+static void dns_ares_shutdown_locked(grpc_exec_ctx *exec_ctx, grpc_resolver *r);
+static void dns_ares_channel_saw_error_locked(grpc_exec_ctx *exec_ctx,
+                                              grpc_resolver *r);
+static void dns_ares_next_locked(grpc_exec_ctx *exec_ctx, grpc_resolver *r,
+                                 grpc_channel_args **target_result,
+                                 grpc_closure *on_complete);
+
+static const grpc_resolver_vtable dns_ares_resolver_vtable = {
+    dns_ares_destroy, dns_ares_shutdown_locked,
+    dns_ares_channel_saw_error_locked, dns_ares_next_locked};
+
+static void dns_ares_shutdown_locked(grpc_exec_ctx *exec_ctx,
+                                     grpc_resolver *resolver) {
+  ares_dns_resolver *r = (ares_dns_resolver *)resolver;
+  if (r->have_retry_timer) {
+    grpc_timer_cancel(exec_ctx, &r->retry_timer);
+  }
+  if (r->next_completion != NULL) {
+    *r->target_result = NULL;
+    grpc_closure_sched(
+        exec_ctx, r->next_completion,
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Resolver Shutdown"));
+    r->next_completion = NULL;
+  }
+}
+
+static void dns_ares_channel_saw_error_locked(grpc_exec_ctx *exec_ctx,
+                                              grpc_resolver *resolver) {
+  ares_dns_resolver *r = (ares_dns_resolver *)resolver;
+  if (!r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
+    dns_ares_start_resolving_locked(exec_ctx, r);
+  }
+}
+
+static void dns_ares_on_retry_timer_locked(grpc_exec_ctx *exec_ctx, void *arg,
+                                           grpc_error *error) {
+  ares_dns_resolver *r = arg;
+  r->have_retry_timer = false;
+  if (error == GRPC_ERROR_NONE) {
+    if (!r->resolving) {
+      dns_ares_start_resolving_locked(exec_ctx, r);
+    }
+  }
+  GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "retry-timer");
+}
+
+static void dns_ares_on_resolved_locked(grpc_exec_ctx *exec_ctx, void *arg,
+                                        grpc_error *error) {
+  ares_dns_resolver *r = arg;
+  grpc_channel_args *result = NULL;
+  GPR_ASSERT(r->resolving);
+  r->resolving = false;
+  if (r->addresses != NULL) {
+    grpc_lb_addresses *addresses = grpc_lb_addresses_create(
+        r->addresses->naddrs, NULL /* user_data_vtable */);
+    for (size_t i = 0; i < r->addresses->naddrs; ++i) {
+      grpc_lb_addresses_set_address(
+          addresses, i, &r->addresses->addrs[i].addr,
+          r->addresses->addrs[i].len, false /* is_balancer */,
+          NULL /* balancer_name */, NULL /* user_data */);
+    }
+    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(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);
+    gpr_log(GPR_INFO, "dns resolution failed (will retry): %s",
+            grpc_error_string(error));
+    GPR_ASSERT(!r->have_retry_timer);
+    r->have_retry_timer = true;
+    GRPC_RESOLVER_REF(&r->base, "retry-timer");
+    if (gpr_time_cmp(timeout, gpr_time_0(timeout.clock_type)) > 0) {
+      gpr_log(GPR_DEBUG, "retrying in %" PRId64 ".%09d seconds", timeout.tv_sec,
+              timeout.tv_nsec);
+    } else {
+      gpr_log(GPR_DEBUG, "retrying immediately");
+    }
+    grpc_timer_init(exec_ctx, &r->retry_timer, next_try,
+                    &r->dns_ares_on_retry_timer_locked, now);
+  }
+  if (r->resolved_result != NULL) {
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
+  }
+  r->resolved_result = result;
+  r->resolved_version++;
+  dns_ares_maybe_finish_next_locked(exec_ctx, r);
+  GRPC_RESOLVER_UNREF(exec_ctx, &r->base, "dns-resolving");
+}
+
+static void dns_ares_next_locked(grpc_exec_ctx *exec_ctx,
+                                 grpc_resolver *resolver,
+                                 grpc_channel_args **target_result,
+                                 grpc_closure *on_complete) {
+  gpr_log(GPR_DEBUG, "dns_ares_next is called.");
+  ares_dns_resolver *r = (ares_dns_resolver *)resolver;
+  GPR_ASSERT(!r->next_completion);
+  r->next_completion = on_complete;
+  r->target_result = target_result;
+  if (r->resolved_version == 0 && !r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
+    dns_ares_start_resolving_locked(exec_ctx, r);
+  } else {
+    dns_ares_maybe_finish_next_locked(exec_ctx, r);
+  }
+}
+
+static void dns_ares_start_resolving_locked(grpc_exec_ctx *exec_ctx,
+                                            ares_dns_resolver *r) {
+  GRPC_RESOLVER_REF(&r->base, "dns-resolving");
+  GPR_ASSERT(!r->resolving);
+  r->resolving = true;
+  r->addresses = NULL;
+  grpc_resolve_address(exec_ctx, r->name_to_resolve, r->default_port,
+                       r->interested_parties, &r->dns_ares_on_resolved_locked,
+                       &r->addresses);
+}
+
+static void dns_ares_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
+                                              ares_dns_resolver *r) {
+  if (r->next_completion != NULL &&
+      r->resolved_version != r->published_version) {
+    *r->target_result = r->resolved_result == NULL
+                            ? NULL
+                            : grpc_channel_args_copy(r->resolved_result);
+    grpc_closure_sched(exec_ctx, r->next_completion, GRPC_ERROR_NONE);
+    r->next_completion = NULL;
+    r->published_version = r->resolved_version;
+  }
+}
+
+static void dns_ares_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
+  gpr_log(GPR_DEBUG, "dns_ares_destroy");
+  ares_dns_resolver *r = (ares_dns_resolver *)gr;
+  if (r->resolved_result != NULL) {
+    grpc_channel_args_destroy(exec_ctx, r->resolved_result);
+  }
+  grpc_pollset_set_destroy(exec_ctx, r->interested_parties);
+  gpr_free(r->name_to_resolve);
+  gpr_free(r->default_port);
+  grpc_channel_args_destroy(exec_ctx, r->channel_args);
+  gpr_free(r);
+}
+
+static grpc_resolver *dns_ares_create(grpc_exec_ctx *exec_ctx,
+                                      grpc_resolver_args *args,
+                                      const char *default_port) {
+  // Get name from args.
+  const char *path = args->uri->path;
+  if (0 != strcmp(args->uri->authority, "")) {
+    gpr_log(GPR_ERROR, "authority based dns uri's not supported");
+    return NULL;
+  }
+  if (path[0] == '/') ++path;
+  // Create resolver.
+  ares_dns_resolver *r = gpr_zalloc(sizeof(ares_dns_resolver));
+  grpc_resolver_init(&r->base, &dns_ares_resolver_vtable, args->combiner);
+  r->name_to_resolve = gpr_strdup(path);
+  r->default_port = gpr_strdup(default_port);
+  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,
+                   GRPC_DNS_MIN_CONNECT_TIMEOUT_SECONDS * 1000,
+                   GRPC_DNS_RECONNECT_MAX_BACKOFF_SECONDS * 1000);
+  grpc_closure_init(&r->dns_ares_on_retry_timer_locked,
+                    dns_ares_on_retry_timer_locked, r,
+                    grpc_combiner_scheduler(r->base.combiner, false));
+  grpc_closure_init(&r->dns_ares_on_resolved_locked,
+                    dns_ares_on_resolved_locked, r,
+                    grpc_combiner_scheduler(r->base.combiner, false));
+  return &r->base;
+}
+
+/*
+ * FACTORY
+ */
+
+static void dns_ares_factory_ref(grpc_resolver_factory *factory) {}
+
+static void dns_ares_factory_unref(grpc_resolver_factory *factory) {}
+
+static grpc_resolver *dns_factory_create_resolver(
+    grpc_exec_ctx *exec_ctx, grpc_resolver_factory *factory,
+    grpc_resolver_args *args) {
+  return dns_ares_create(exec_ctx, args, "https");
+}
+
+static char *dns_ares_factory_get_default_host_name(
+    grpc_resolver_factory *factory, grpc_uri *uri) {
+  const char *path = uri->path;
+  if (path[0] == '/') ++path;
+  return gpr_strdup(path);
+}
+
+static const grpc_resolver_factory_vtable dns_ares_factory_vtable = {
+    dns_ares_factory_ref, dns_ares_factory_unref, dns_factory_create_resolver,
+    dns_ares_factory_get_default_host_name, "dns"};
+static grpc_resolver_factory dns_resolver_factory = {&dns_ares_factory_vtable};
+
+static grpc_resolver_factory *dns_ares_resolver_factory_create() {
+  return &dns_resolver_factory;
+}
+
+void grpc_resolver_dns_ares_init(void) {
+  char *resolver = gpr_getenv("GRPC_DNS_RESOLVER");
+  /* TODO(zyc): Turn on c-ares based resolver by default after the address
+     sorter and the CNAME support are added. */
+  if (resolver != NULL && gpr_stricmp(resolver, "ares") == 0) {
+    grpc_error *error = grpc_ares_init();
+    if (error != GRPC_ERROR_NONE) {
+      GRPC_LOG_IF_ERROR("ares_library_init() failed", error);
+      return;
+    }
+    grpc_resolve_address = grpc_resolve_address_ares;
+    grpc_register_resolver_type(dns_ares_resolver_factory_create());
+  }
+  gpr_free(resolver);
+}
+
+void grpc_resolver_dns_ares_shutdown(void) {
+  char *resolver = gpr_getenv("GRPC_DNS_RESOLVER");
+  if (resolver != NULL && gpr_stricmp(resolver, "ares") == 0) {
+    grpc_ares_cleanup();
+  }
+  gpr_free(resolver);
+}
+
+#else /* GRPC_ARES == 1 && !defined(GRPC_UV) */
+
+void grpc_resolver_dns_ares_init(void) {}
+
+void grpc_resolver_dns_ares_shutdown(void) {}
+
+#endif /* GRPC_ARES == 1 && !defined(GRPC_UV) */
diff --git a/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h b/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h
new file mode 100644
index 0000000000000000000000000000000000000000..334feaa2aba4ec6f802ce388fd12ffd8e183e088
--- /dev/null
+++ b/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h
@@ -0,0 +1,65 @@
+/*
+ *
+ * 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_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+#define GRPC_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H
+
+#include <ares.h>
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+
+typedef struct grpc_ares_ev_driver grpc_ares_ev_driver;
+
+/* Start \a ev_driver. It will keep working until all IO on its ares_channel is
+   done, or grpc_ares_ev_driver_destroy() is called. It may notify the callbacks
+   bound to its ares_channel when necessary. */
+void grpc_ares_ev_driver_start(grpc_exec_ctx *exec_ctx,
+                               grpc_ares_ev_driver *ev_driver);
+
+/* Returns the ares_channel owned by \a ev_driver. To bind a c-ares query to
+   \a ev_driver, use the ares_channel owned by \a ev_driver as the arg of the
+   query. */
+ares_channel *grpc_ares_ev_driver_get_channel(grpc_ares_ev_driver *ev_driver);
+
+/* Creates a new grpc_ares_ev_driver. Returns GRPC_ERROR_NONE if \a ev_driver is
+   created successfully. */
+grpc_error *grpc_ares_ev_driver_create(grpc_ares_ev_driver **ev_driver,
+                                       grpc_pollset_set *pollset_set);
+
+/* Destroys \a ev_driver asynchronously. Pending lookups made on \a ev_driver
+   will be cancelled and their on_done callbacks will be invoked with a status
+   of ARES_ECANCELLED. */
+void grpc_ares_ev_driver_destroy(grpc_ares_ev_driver *ev_driver);
+
+#endif /* GRPC_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_EV_DRIVER_H */
diff --git a/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c b/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
new file mode 100644
index 0000000000000000000000000000000000000000..fab4f0c97721e3bf54cd61da2e263cb53841c8df
--- /dev/null
+++ b/src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c
@@ -0,0 +1,319 @@
+/*
+ *
+ * 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.
+ *
+ */
+#include <grpc/support/port_platform.h>
+#include "src/core/lib/iomgr/port.h"
+#if GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET)
+
+#include "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/string.h"
+
+typedef struct fd_node {
+  /** the owner of this fd node */
+  grpc_ares_ev_driver *ev_driver;
+  /** the grpc_fd owned by this fd node */
+  grpc_fd *grpc_fd;
+  /** a closure wrapping on_readable_cb, which should be invoked when the
+      grpc_fd in this node becomes readable. */
+  grpc_closure read_closure;
+  /** a closure wrapping on_writable_cb, which should be invoked when the
+      grpc_fd in this node becomes writable. */
+  grpc_closure write_closure;
+  /** next fd node in the list */
+  struct fd_node *next;
+
+  /** mutex guarding the rest of the state */
+  gpr_mu mu;
+  /** if the readable closure has been registered */
+  bool readable_registered;
+  /** if the writable closure has been registered */
+  bool writable_registered;
+} fd_node;
+
+struct grpc_ares_ev_driver {
+  /** the ares_channel owned by this event driver */
+  ares_channel channel;
+  /** pollset set for driving the IO events of the channel */
+  grpc_pollset_set *pollset_set;
+  /** refcount of the event driver */
+  gpr_refcount refs;
+
+  /** mutex guarding the rest of the state */
+  gpr_mu mu;
+  /** a list of grpc_fd that this event driver is currently using. */
+  fd_node *fds;
+  /** is this event driver currently working? */
+  bool working;
+  /** is this event driver being shut down */
+  bool shutting_down;
+};
+
+static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
+                                             grpc_ares_ev_driver *ev_driver);
+
+static grpc_ares_ev_driver *grpc_ares_ev_driver_ref(
+    grpc_ares_ev_driver *ev_driver) {
+  gpr_log(GPR_DEBUG, "Ref ev_driver %" PRIuPTR, (uintptr_t)ev_driver);
+  gpr_ref(&ev_driver->refs);
+  return ev_driver;
+}
+
+static void grpc_ares_ev_driver_unref(grpc_ares_ev_driver *ev_driver) {
+  gpr_log(GPR_DEBUG, "Unref ev_driver %" PRIuPTR, (uintptr_t)ev_driver);
+  if (gpr_unref(&ev_driver->refs)) {
+    gpr_log(GPR_DEBUG, "destroy ev_driver %" PRIuPTR, (uintptr_t)ev_driver);
+    GPR_ASSERT(ev_driver->fds == NULL);
+    gpr_mu_destroy(&ev_driver->mu);
+    ares_destroy(ev_driver->channel);
+    gpr_free(ev_driver);
+  }
+}
+
+static void fd_node_destroy(grpc_exec_ctx *exec_ctx, fd_node *fdn) {
+  gpr_log(GPR_DEBUG, "delete fd: %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  GPR_ASSERT(!fdn->readable_registered);
+  GPR_ASSERT(!fdn->writable_registered);
+  gpr_mu_destroy(&fdn->mu);
+  grpc_pollset_set_del_fd(exec_ctx, fdn->ev_driver->pollset_set, fdn->grpc_fd);
+  grpc_fd_shutdown(exec_ctx, fdn->grpc_fd,
+                   GRPC_ERROR_CREATE_FROM_STATIC_STRING("fd node destroyed"));
+  grpc_fd_orphan(exec_ctx, fdn->grpc_fd, NULL, NULL, "c-ares query finished");
+  gpr_free(fdn);
+}
+
+grpc_error *grpc_ares_ev_driver_create(grpc_ares_ev_driver **ev_driver,
+                                       grpc_pollset_set *pollset_set) {
+  *ev_driver = gpr_malloc(sizeof(grpc_ares_ev_driver));
+  int status = ares_init(&(*ev_driver)->channel);
+  gpr_log(GPR_DEBUG, "grpc_ares_ev_driver_create");
+  if (status != ARES_SUCCESS) {
+    char *err_msg;
+    gpr_asprintf(&err_msg, "Failed to init ares channel. C-ares error: %s",
+                 ares_strerror(status));
+    grpc_error *err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_msg);
+    gpr_free(err_msg);
+    gpr_free(*ev_driver);
+    return err;
+  }
+  gpr_mu_init(&(*ev_driver)->mu);
+  gpr_ref_init(&(*ev_driver)->refs, 1);
+  (*ev_driver)->pollset_set = pollset_set;
+  (*ev_driver)->fds = NULL;
+  (*ev_driver)->working = false;
+  (*ev_driver)->shutting_down = false;
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_ares_ev_driver_destroy(grpc_ares_ev_driver *ev_driver) {
+  // It's not safe to shut down remaining fds here directly, becauses
+  // ares_host_callback does not provide an exec_ctx. We mark the event driver
+  // as being shut down. If the event driver is working,
+  // grpc_ares_notify_on_event_locked will shut down the fds; if it's not
+  // working, there are no fds to shut down.
+  gpr_mu_lock(&ev_driver->mu);
+  ev_driver->shutting_down = true;
+  gpr_mu_unlock(&ev_driver->mu);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+// Search fd in the fd_node list head. This is an O(n) search, the max possible
+// value of n is ARES_GETSOCK_MAXNUM (16). n is typically 1 - 2 in our tests.
+static fd_node *pop_fd_node(fd_node **head, int fd) {
+  fd_node dummy_head;
+  dummy_head.next = *head;
+  fd_node *node = &dummy_head;
+  while (node->next != NULL) {
+    if (grpc_fd_wrapped_fd(node->next->grpc_fd) == fd) {
+      fd_node *ret = node->next;
+      node->next = node->next->next;
+      *head = dummy_head.next;
+      return ret;
+    }
+    node = node->next;
+  }
+  return NULL;
+}
+
+static void on_readable_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                           grpc_error *error) {
+  fd_node *fdn = arg;
+  grpc_ares_ev_driver *ev_driver = fdn->ev_driver;
+  gpr_mu_lock(&fdn->mu);
+  fdn->readable_registered = false;
+  gpr_mu_unlock(&fdn->mu);
+
+  gpr_log(GPR_DEBUG, "readable on %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  if (error == GRPC_ERROR_NONE) {
+    ares_process_fd(ev_driver->channel, grpc_fd_wrapped_fd(fdn->grpc_fd),
+                    ARES_SOCKET_BAD);
+  } else {
+    // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
+    // timed out. The pending lookups made on this ev_driver will be cancelled
+    // by the following ares_cancel() and the on_done callbacks will be invoked
+    // with a status of ARES_ECANCELLED. The remaining file descriptors in this
+    // ev_driver will be cleaned up in the follwing
+    // grpc_ares_notify_on_event_locked().
+    ares_cancel(ev_driver->channel);
+  }
+  gpr_mu_lock(&ev_driver->mu);
+  grpc_ares_notify_on_event_locked(exec_ctx, ev_driver);
+  gpr_mu_unlock(&ev_driver->mu);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+static void on_writable_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                           grpc_error *error) {
+  fd_node *fdn = arg;
+  grpc_ares_ev_driver *ev_driver = fdn->ev_driver;
+  gpr_mu_lock(&fdn->mu);
+  fdn->writable_registered = false;
+  gpr_mu_unlock(&fdn->mu);
+
+  gpr_log(GPR_DEBUG, "writable on %d", grpc_fd_wrapped_fd(fdn->grpc_fd));
+  if (error == GRPC_ERROR_NONE) {
+    ares_process_fd(ev_driver->channel, ARES_SOCKET_BAD,
+                    grpc_fd_wrapped_fd(fdn->grpc_fd));
+  } else {
+    // If error is not GRPC_ERROR_NONE, it means the fd has been shutdown or
+    // timed out. The pending lookups made on this ev_driver will be cancelled
+    // by the following ares_cancel() and the on_done callbacks will be invoked
+    // with a status of ARES_ECANCELLED. The remaining file descriptors in this
+    // ev_driver will be cleaned up in the follwing
+    // grpc_ares_notify_on_event_locked().
+    ares_cancel(ev_driver->channel);
+  }
+  gpr_mu_lock(&ev_driver->mu);
+  grpc_ares_notify_on_event_locked(exec_ctx, ev_driver);
+  gpr_mu_unlock(&ev_driver->mu);
+  grpc_ares_ev_driver_unref(ev_driver);
+}
+
+ares_channel *grpc_ares_ev_driver_get_channel(grpc_ares_ev_driver *ev_driver) {
+  return &ev_driver->channel;
+}
+
+// Get the file descriptors used by the ev_driver's ares channel, register
+// driver_closure with these filedescriptors.
+static void grpc_ares_notify_on_event_locked(grpc_exec_ctx *exec_ctx,
+                                             grpc_ares_ev_driver *ev_driver) {
+  fd_node *new_list = NULL;
+  if (!ev_driver->shutting_down) {
+    ares_socket_t socks[ARES_GETSOCK_MAXNUM];
+    int socks_bitmask =
+        ares_getsock(ev_driver->channel, socks, ARES_GETSOCK_MAXNUM);
+    for (size_t i = 0; i < ARES_GETSOCK_MAXNUM; i++) {
+      if (ARES_GETSOCK_READABLE(socks_bitmask, i) ||
+          ARES_GETSOCK_WRITABLE(socks_bitmask, i)) {
+        fd_node *fdn = pop_fd_node(&ev_driver->fds, socks[i]);
+        // Create a new fd_node if sock[i] is not in the fd_node list.
+        if (fdn == NULL) {
+          char *fd_name;
+          gpr_asprintf(&fd_name, "ares_ev_driver-%" PRIuPTR, i);
+          fdn = gpr_malloc(sizeof(fd_node));
+          gpr_log(GPR_DEBUG, "new fd: %d", socks[i]);
+          fdn->grpc_fd = grpc_fd_create(socks[i], fd_name);
+          fdn->ev_driver = ev_driver;
+          fdn->readable_registered = false;
+          fdn->writable_registered = false;
+          gpr_mu_init(&fdn->mu);
+          grpc_closure_init(&fdn->read_closure, on_readable_cb, fdn,
+                            grpc_schedule_on_exec_ctx);
+          grpc_closure_init(&fdn->write_closure, on_writable_cb, fdn,
+                            grpc_schedule_on_exec_ctx);
+          grpc_pollset_set_add_fd(exec_ctx, ev_driver->pollset_set,
+                                  fdn->grpc_fd);
+          gpr_free(fd_name);
+        }
+        fdn->next = new_list;
+        new_list = fdn;
+        gpr_mu_lock(&fdn->mu);
+        // Register read_closure if the socket is readable and read_closure has
+        // not been registered with this socket.
+        if (ARES_GETSOCK_READABLE(socks_bitmask, i) &&
+            !fdn->readable_registered) {
+          grpc_ares_ev_driver_ref(ev_driver);
+          gpr_log(GPR_DEBUG, "notify read on: %d",
+                  grpc_fd_wrapped_fd(fdn->grpc_fd));
+          grpc_fd_notify_on_read(exec_ctx, fdn->grpc_fd, &fdn->read_closure);
+          fdn->readable_registered = true;
+        }
+        // Register write_closure if the socket is writable and write_closure
+        // has not been registered with this socket.
+        if (ARES_GETSOCK_WRITABLE(socks_bitmask, i) &&
+            !fdn->writable_registered) {
+          gpr_log(GPR_DEBUG, "notify write on: %d",
+                  grpc_fd_wrapped_fd(fdn->grpc_fd));
+          grpc_ares_ev_driver_ref(ev_driver);
+          grpc_fd_notify_on_write(exec_ctx, fdn->grpc_fd, &fdn->write_closure);
+          fdn->writable_registered = true;
+        }
+        gpr_mu_unlock(&fdn->mu);
+      }
+    }
+  }
+  // Any remaining fds in ev_driver->fds were not returned by ares_getsock() and
+  // are therefore no longer in use, so they can be shut down and removed from
+  // the list.
+  while (ev_driver->fds != NULL) {
+    fd_node *cur = ev_driver->fds;
+    ev_driver->fds = ev_driver->fds->next;
+    fd_node_destroy(exec_ctx, cur);
+  }
+  ev_driver->fds = new_list;
+  // If the ev driver has no working fd, all the tasks are done.
+  if (new_list == NULL) {
+    ev_driver->working = false;
+    gpr_log(GPR_DEBUG, "ev driver stop working");
+  }
+}
+
+void grpc_ares_ev_driver_start(grpc_exec_ctx *exec_ctx,
+                               grpc_ares_ev_driver *ev_driver) {
+  gpr_mu_lock(&ev_driver->mu);
+  if (!ev_driver->working) {
+    ev_driver->working = true;
+    grpc_ares_notify_on_event_locked(exec_ctx, ev_driver);
+  }
+  gpr_mu_unlock(&ev_driver->mu);
+}
+
+#endif /* GRPC_ARES == 1 && defined(GRPC_POSIX_SOCKET) */
diff --git a/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c b/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c
new file mode 100644
index 0000000000000000000000000000000000000000..3eee8e3513ba1dbe9331d6b9158a3c930f2d4e8c
--- /dev/null
+++ b/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c
@@ -0,0 +1,289 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+#if GRPC_ARES == 1 && !defined(GRPC_UV)
+
+#include "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
+#include <string.h>
+#include <sys/types.h>
+
+#include <ares.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/string.h"
+
+static gpr_once g_basic_init = GPR_ONCE_INIT;
+static gpr_mu g_init_mu;
+
+typedef struct grpc_ares_request {
+  /** following members are set in grpc_resolve_address_ares_impl */
+  /** host to resolve, parsed from the name to resolve */
+  char *host;
+  /** port to fill in sockaddr_in, parsed from the name to resolve */
+  char *port;
+  /** default port to use */
+  char *default_port;
+  /** closure to call when the request completes */
+  grpc_closure *on_done;
+  /** the pointer to receive the resolved addresses */
+  grpc_resolved_addresses **addrs_out;
+  /** the evernt driver used by this request */
+  grpc_ares_ev_driver *ev_driver;
+  /** number of ongoing queries */
+  gpr_refcount pending_queries;
+
+  /** mutex guarding the rest of the state */
+  gpr_mu mu;
+  /** is there at least one successful query, set in on_done_cb */
+  bool success;
+  /** the errors explaining the request failure, set in on_done_cb */
+  grpc_error *error;
+} grpc_ares_request;
+
+static void do_basic_init(void) { gpr_mu_init(&g_init_mu); }
+
+static uint16_t strhtons(const char *port) {
+  if (strcmp(port, "http") == 0) {
+    return htons(80);
+  } else if (strcmp(port, "https") == 0) {
+    return htons(443);
+  }
+  return htons((unsigned short)atoi(port));
+}
+
+static void grpc_ares_request_unref(grpc_exec_ctx *exec_ctx,
+                                    grpc_ares_request *r) {
+  /* If there are no pending queries, invoke on_done callback and destroy the
+     request */
+  if (gpr_unref(&r->pending_queries)) {
+    /* TODO(zyc): Sort results with RFC6724 before invoking on_done. */
+    if (exec_ctx == NULL) {
+      /* A new exec_ctx is created here, as the c-ares interface does not
+         provide one in ares_host_callback. It's safe to schedule on_done with
+         the newly created exec_ctx, since the caller has been warned not to
+         acquire locks in on_done. ares_dns_resolver is using combiner to
+         protect resources needed by on_done. */
+      grpc_exec_ctx new_exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_closure_sched(&new_exec_ctx, r->on_done, r->error);
+      grpc_exec_ctx_finish(&new_exec_ctx);
+    } else {
+      grpc_closure_sched(exec_ctx, r->on_done, r->error);
+    }
+    gpr_mu_destroy(&r->mu);
+    grpc_ares_ev_driver_destroy(r->ev_driver);
+    gpr_free(r->host);
+    gpr_free(r->port);
+    gpr_free(r->default_port);
+    gpr_free(r);
+  }
+}
+
+static void on_done_cb(void *arg, int status, int timeouts,
+                       struct hostent *hostent) {
+  grpc_ares_request *r = (grpc_ares_request *)arg;
+  gpr_mu_lock(&r->mu);
+  if (status == ARES_SUCCESS) {
+    GRPC_ERROR_UNREF(r->error);
+    r->error = GRPC_ERROR_NONE;
+    r->success = true;
+    grpc_resolved_addresses **addresses = r->addrs_out;
+    if (*addresses == NULL) {
+      *addresses = gpr_malloc(sizeof(grpc_resolved_addresses));
+      (*addresses)->naddrs = 0;
+      (*addresses)->addrs = NULL;
+    }
+    size_t prev_naddr = (*addresses)->naddrs;
+    size_t i;
+    for (i = 0; hostent->h_addr_list[i] != NULL; i++) {
+    }
+    (*addresses)->naddrs += i;
+    (*addresses)->addrs =
+        gpr_realloc((*addresses)->addrs,
+                    sizeof(grpc_resolved_address) * (*addresses)->naddrs);
+    for (i = prev_naddr; i < (*addresses)->naddrs; i++) {
+      memset(&(*addresses)->addrs[i], 0, sizeof(grpc_resolved_address));
+      if (hostent->h_addrtype == AF_INET6) {
+        (*addresses)->addrs[i].len = sizeof(struct sockaddr_in6);
+        struct sockaddr_in6 *addr =
+            (struct sockaddr_in6 *)&(*addresses)->addrs[i].addr;
+        addr->sin6_family = (sa_family_t)hostent->h_addrtype;
+        addr->sin6_port = strhtons(r->port);
+
+        char output[INET6_ADDRSTRLEN];
+        memcpy(&addr->sin6_addr, hostent->h_addr_list[i - prev_naddr],
+               sizeof(struct in6_addr));
+        ares_inet_ntop(AF_INET6, &addr->sin6_addr, output, INET6_ADDRSTRLEN);
+        gpr_log(GPR_DEBUG,
+                "c-ares resolver gets a AF_INET6 result: \n"
+                "  addr: %s\n  port: %s\n  sin6_scope_id: %d\n",
+                output, r->port, addr->sin6_scope_id);
+      } else {
+        (*addresses)->addrs[i].len = sizeof(struct sockaddr_in);
+        struct sockaddr_in *addr =
+            (struct sockaddr_in *)&(*addresses)->addrs[i].addr;
+        memcpy(&addr->sin_addr, hostent->h_addr_list[i - prev_naddr],
+               sizeof(struct in_addr));
+        addr->sin_family = (sa_family_t)hostent->h_addrtype;
+        addr->sin_port = strhtons(r->port);
+
+        char output[INET_ADDRSTRLEN];
+        ares_inet_ntop(AF_INET, &addr->sin_addr, output, INET_ADDRSTRLEN);
+        gpr_log(GPR_DEBUG,
+                "c-ares resolver gets a AF_INET result: \n"
+                "  addr: %s\n  port: %s\n",
+                output, r->port);
+      }
+    }
+  } else if (!r->success) {
+    char *error_msg;
+    gpr_asprintf(&error_msg, "C-ares status is not ARES_SUCCESS: %s",
+                 ares_strerror(status));
+    grpc_error *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+    gpr_free(error_msg);
+    if (r->error == GRPC_ERROR_NONE) {
+      r->error = error;
+    } else {
+      r->error = grpc_error_add_child(error, r->error);
+    }
+  }
+  gpr_mu_unlock(&r->mu);
+  grpc_ares_request_unref(NULL, r);
+}
+
+void grpc_resolve_address_ares_impl(grpc_exec_ctx *exec_ctx, const char *name,
+                                    const char *default_port,
+                                    grpc_pollset_set *interested_parties,
+                                    grpc_closure *on_done,
+                                    grpc_resolved_addresses **addrs) {
+  /* TODO(zyc): Enable tracing after #9603 is checked in */
+  /* if (grpc_dns_trace) {
+      gpr_log(GPR_DEBUG, "resolve_address (blocking): name=%s, default_port=%s",
+              name, default_port);
+     } */
+
+  /* parse name, splitting it into host and port parts */
+  char *host;
+  char *port;
+  gpr_split_host_port(name, &host, &port);
+  if (host == NULL) {
+    grpc_error *err = grpc_error_set_str(
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("unparseable host:port"),
+        GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+    grpc_closure_sched(exec_ctx, on_done, err);
+    goto error_cleanup;
+  } else if (port == NULL) {
+    if (default_port == NULL) {
+      grpc_error *err = grpc_error_set_str(
+          GRPC_ERROR_CREATE_FROM_STATIC_STRING("no port in name"),
+          GRPC_ERROR_STR_TARGET_ADDRESS, grpc_slice_from_copied_string(name));
+      grpc_closure_sched(exec_ctx, on_done, err);
+      goto error_cleanup;
+    }
+    port = gpr_strdup(default_port);
+  }
+
+  grpc_ares_ev_driver *ev_driver;
+  grpc_error *err = grpc_ares_ev_driver_create(&ev_driver, interested_parties);
+  if (err != GRPC_ERROR_NONE) {
+    GRPC_LOG_IF_ERROR("grpc_ares_ev_driver_create() failed", err);
+    goto error_cleanup;
+  }
+
+  grpc_ares_request *r = gpr_malloc(sizeof(grpc_ares_request));
+  gpr_mu_init(&r->mu);
+  r->ev_driver = ev_driver;
+  r->on_done = on_done;
+  r->addrs_out = addrs;
+  r->default_port = gpr_strdup(default_port);
+  r->port = port;
+  r->host = host;
+  r->success = false;
+  r->error = GRPC_ERROR_NONE;
+  ares_channel *channel = grpc_ares_ev_driver_get_channel(r->ev_driver);
+  gpr_ref_init(&r->pending_queries, 2);
+  if (grpc_ipv6_loopback_available()) {
+    gpr_ref(&r->pending_queries);
+    ares_gethostbyname(*channel, r->host, AF_INET6, on_done_cb, r);
+  }
+  ares_gethostbyname(*channel, r->host, AF_INET, on_done_cb, r);
+  /* TODO(zyc): Handle CNAME records here. */
+  grpc_ares_ev_driver_start(exec_ctx, r->ev_driver);
+  grpc_ares_request_unref(exec_ctx, r);
+  return;
+
+error_cleanup:
+  gpr_free(host);
+  gpr_free(port);
+}
+
+void (*grpc_resolve_address_ares)(
+    grpc_exec_ctx *exec_ctx, const char *name, const char *default_port,
+    grpc_pollset_set *interested_parties, grpc_closure *on_done,
+    grpc_resolved_addresses **addrs) = grpc_resolve_address_ares_impl;
+
+grpc_error *grpc_ares_init(void) {
+  gpr_once_init(&g_basic_init, do_basic_init);
+  gpr_mu_lock(&g_init_mu);
+  int status = ares_library_init(ARES_LIB_INIT_ALL);
+  gpr_mu_unlock(&g_init_mu);
+
+  if (status != ARES_SUCCESS) {
+    char *error_msg;
+    gpr_asprintf(&error_msg, "ares_library_init failed: %s",
+                 ares_strerror(status));
+    grpc_error *error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(error_msg);
+    gpr_free(error_msg);
+    return error;
+  }
+  return GRPC_ERROR_NONE;
+}
+
+void grpc_ares_cleanup(void) {
+  gpr_mu_lock(&g_init_mu);
+  ares_library_cleanup();
+  gpr_mu_unlock(&g_init_mu);
+}
+
+#endif /* GRPC_ARES == 1 && !defined(GRPC_UV) */
diff --git a/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h b/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h
new file mode 100644
index 0000000000000000000000000000000000000000..ab00a26b36a7f919a6ea25bd9d29340fb545d898
--- /dev/null
+++ b/src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h
@@ -0,0 +1,63 @@
+/*
+ *
+ * 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_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+#define GRPC_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+/* Asynchronously resolve addr. Use \a default_port if a port isn't designated
+   in addr, otherwise use the port in addr. grpc_ares_init() must be called at
+   least once before this function. \a on_done may be called directly in this
+   function without being scheduled with \a exec_ctx, it must not try to acquire
+   locks that are being held by the caller. */
+extern void (*grpc_resolve_address_ares)(grpc_exec_ctx *exec_ctx,
+                                         const char *addr,
+                                         const char *default_port,
+                                         grpc_pollset_set *interested_parties,
+                                         grpc_closure *on_done,
+                                         grpc_resolved_addresses **addresses);
+
+/* Initialize gRPC ares wrapper. Must be called at least once before
+   grpc_resolve_address_ares(). */
+grpc_error *grpc_ares_init(void);
+
+/* Uninitialized gRPC ares wrapper. If there was more than one previous call to
+   grpc_ares_init(), this function uninitializes the gRPC ares wrapper only if
+   it has been called the same number of times as grpc_ares_init(). */
+void grpc_ares_cleanup(void);
+
+#endif /* GRPC_CORE_EXT_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H */
diff --git a/src/core/ext/resolver/dns/native/dns_resolver.c b/src/core/ext/resolver/dns/native/dns_resolver.c
index d6cb6a95a299ed7ec4055e622d7d7093296654f6..97cd0486a9fd98f4306cc00aa9a69b0fd00cf646 100644
--- a/src/core/ext/resolver/dns/native/dns_resolver.c
+++ b/src/core/ext/resolver/dns/native/dns_resolver.c
@@ -44,6 +44,7 @@
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/timer.h"
 #include "src/core/lib/support/backoff.h"
+#include "src/core/lib/support/env.h"
 #include "src/core/lib/support/string.h"
 
 #define GRPC_DNS_MIN_CONNECT_TIMEOUT_SECONDS 1
@@ -304,7 +305,21 @@ static grpc_resolver_factory *dns_resolver_factory_create() {
 }
 
 void grpc_resolver_dns_native_init(void) {
-  grpc_register_resolver_type(dns_resolver_factory_create());
+  char *resolver = gpr_getenv("GRPC_DNS_RESOLVER");
+  if (resolver != NULL && gpr_stricmp(resolver, "native") == 0) {
+    gpr_log(GPR_DEBUG, "Using native dns resolver");
+    grpc_register_resolver_type(dns_resolver_factory_create());
+  } else {
+    grpc_resolver_factory *existing_factory =
+        grpc_resolver_factory_lookup("dns");
+    if (existing_factory == NULL) {
+      gpr_log(GPR_DEBUG, "Using native dns resolver");
+      grpc_register_resolver_type(dns_resolver_factory_create());
+    } else {
+      grpc_resolver_factory_unref(existing_factory);
+    }
+  }
+  gpr_free(resolver);
 }
 
 void grpc_resolver_dns_native_shutdown(void) {}
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 88d96b1a15c6fc312e77df133b51a5a483edfd46..26f9449f4b9d8465c6be03db56a18c564b146e9c 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -69,10 +69,16 @@
 #define MAX_WRITE_BUFFER_SIZE (64 * 1024 * 1024)
 #define DEFAULT_MAX_HEADER_LIST_SIZE (16 * 1024)
 
-#define DEFAULT_KEEPALIVE_TIME_SECOND INT_MAX
-#define DEFAULT_KEEPALIVE_TIMEOUT_SECOND 20
+#define DEFAULT_CLIENT_KEEPALIVE_TIME_S INT_MAX
+#define DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_S 20
 #define DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS false
 
+static int g_default_client_keepalive_time_s = DEFAULT_CLIENT_KEEPALIVE_TIME_S;
+static int g_default_client_keepalive_timeout_s =
+    DEFAULT_CLIENT_KEEPALIVE_TIMEOUT_S;
+static bool g_default_keepalive_permit_without_calls =
+    DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
+
 #define MAX_CLIENT_STREAM_ID 0x7fffffffu
 int grpc_http_trace = 0;
 int grpc_flowctl_trace = 0;
@@ -142,6 +148,8 @@ static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                              grpc_chttp2_ping_type ping_type,
                              grpc_closure *on_initiate,
                              grpc_closure *on_complete);
+static void retry_initiate_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
+                                       grpc_error *error);
 
 #define DEFAULT_MIN_TIME_BETWEEN_PINGS_MS 0
 #define DEFAULT_MAX_PINGS_BETWEEN_DATA 3
@@ -267,6 +275,8 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   grpc_closure_init(&t->destructive_reclaimer_locked,
                     destructive_reclaimer_locked, t,
                     grpc_combiner_scheduler(t->combiner, false));
+  grpc_closure_init(&t->retry_initiate_ping_locked, retry_initiate_ping_locked,
+                    t, grpc_combiner_scheduler(t->combiner, false));
   grpc_closure_init(&t->start_bdp_ping_locked, start_bdp_ping_locked, t,
                     grpc_combiner_scheduler(t->combiner, false));
   grpc_closure_init(&t->finish_bdp_ping_locked, finish_bdp_ping_locked, t,
@@ -345,15 +355,16 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 
   /* client-side keepalive setting */
   t->keepalive_time =
-      DEFAULT_KEEPALIVE_TIME_SECOND == INT_MAX
+      g_default_client_keepalive_time_s == INT_MAX
           ? gpr_inf_future(GPR_TIMESPAN)
-          : gpr_time_from_seconds(DEFAULT_KEEPALIVE_TIME_SECOND, GPR_TIMESPAN);
+          : gpr_time_from_seconds(g_default_client_keepalive_time_s,
+                                  GPR_TIMESPAN);
   t->keepalive_timeout =
-      DEFAULT_KEEPALIVE_TIMEOUT_SECOND == INT_MAX
+      g_default_client_keepalive_timeout_s == INT_MAX
           ? gpr_inf_future(GPR_TIMESPAN)
-          : gpr_time_from_seconds(DEFAULT_KEEPALIVE_TIMEOUT_SECOND,
+          : gpr_time_from_seconds(g_default_client_keepalive_timeout_s,
                                   GPR_TIMESPAN);
-  t->keepalive_permit_without_calls = DEFAULT_KEEPALIVE_PERMIT_WITHOUT_CALLS;
+  t->keepalive_permit_without_calls = g_default_keepalive_permit_without_calls;
 
   if (channel_args) {
     for (i = 0; i < channel_args->num_args; i++) {
@@ -403,24 +414,25 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
         t->enable_bdp_probe = grpc_channel_arg_get_integer(
             &channel_args->args[i], (grpc_integer_options){1, 0, 1});
       } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_HTTP2_KEEPALIVE_TIME)) {
+                             GRPC_ARG_CLIENT_KEEPALIVE_TIME_S)) {
         const int value = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){DEFAULT_KEEPALIVE_TIME_SECOND, 1, INT_MAX});
+            (grpc_integer_options){g_default_client_keepalive_time_s, 1,
+                                   INT_MAX});
         t->keepalive_time = value == INT_MAX
                                 ? gpr_inf_future(GPR_TIMESPAN)
                                 : gpr_time_from_seconds(value, GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_HTTP2_KEEPALIVE_TIMEOUT)) {
+                             GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S)) {
         const int value = grpc_channel_arg_get_integer(
             &channel_args->args[i],
-            (grpc_integer_options){DEFAULT_KEEPALIVE_TIMEOUT_SECOND, 0,
+            (grpc_integer_options){g_default_client_keepalive_timeout_s, 0,
                                    INT_MAX});
         t->keepalive_timeout = value == INT_MAX
                                    ? gpr_inf_future(GPR_TIMESPAN)
                                    : gpr_time_from_seconds(value, GPR_TIMESPAN);
       } else if (0 == strcmp(channel_args->args[i].key,
-                             GRPC_ARG_HTTP2_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
+                             GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
         t->keepalive_permit_without_calls =
             (uint32_t)grpc_channel_arg_get_integer(
                 &channel_args->args[i], (grpc_integer_options){0, 0, 1});
@@ -474,6 +486,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 
   t->ping_state.pings_before_data_required =
       t->ping_policy.max_pings_without_data;
+  t->ping_state.is_delayed_ping_timer_set = false;
 
   /** Start client-side keepalive pings */
   if (t->is_client) {
@@ -1089,7 +1102,7 @@ static void continue_fetching_send_locked(grpc_exec_ctx *exec_ctx,
       return; /* early out */
     } else if (grpc_byte_stream_next(exec_ctx, s->fetching_send_message,
                                      &s->fetching_slice, UINT32_MAX,
-                                     &s->complete_fetch)) {
+                                     &s->complete_fetch_locked)) {
       add_fetched_slice_locked(exec_ctx, t, s);
     }
   }
@@ -1210,8 +1223,13 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
           }
         } else {
           GPR_ASSERT(s->id != 0);
-          grpc_chttp2_become_writable(exec_ctx, t, s,
-                                      GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED,
+          grpc_chttp2_stream_write_type write_type =
+              GRPC_CHTTP2_STREAM_WRITE_INITIATE_COVERED;
+          if (op->send_message != NULL &&
+              (op->send_message->flags & GRPC_WRITE_BUFFER_HINT)) {
+            write_type = GRPC_CHTTP2_STREAM_WRITE_PIGGYBACK;
+          }
+          grpc_chttp2_become_writable(exec_ctx, t, s, write_type,
                                       "op.send_initial_metadata");
         }
       } else {
@@ -1394,6 +1412,13 @@ static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   }
 }
 
+static void retry_initiate_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
+                                       grpc_error *error) {
+  grpc_chttp2_transport *t = tp;
+  t->ping_state.is_delayed_ping_timer_set = false;
+  grpc_chttp2_initiate_write(exec_ctx, t, false, "retry_send_ping");
+}
+
 void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                           uint64_t id) {
   grpc_chttp2_ping_queue *pq =
@@ -1835,7 +1860,7 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 
   size_t msg_len = GRPC_SLICE_LENGTH(slice);
   GPR_ASSERT(msg_len <= UINT32_MAX);
-  uint32_t msg_len_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)msg_len, 0);
+  uint32_t msg_len_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)msg_len, 1);
   message_pfx = grpc_slice_malloc(14 + msg_len_len);
   p = GRPC_SLICE_START_PTR(message_pfx);
   *p++ = 0x00; /* literal header, not indexed */
@@ -1852,7 +1877,7 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   *p++ = 'a';
   *p++ = 'g';
   *p++ = 'e';
-  GRPC_CHTTP2_WRITE_VARINT((uint32_t)msg_len, 0, 0, p, (uint32_t)msg_len_len);
+  GRPC_CHTTP2_WRITE_VARINT((uint32_t)msg_len, 1, 0, p, (uint32_t)msg_len_len);
   p += msg_len_len;
   GPR_ASSERT(p == GRPC_SLICE_END_PTR(message_pfx));
   len += (uint32_t)GRPC_SLICE_LENGTH(message_pfx);
@@ -2103,6 +2128,32 @@ static void finish_bdp_ping_locked(grpc_exec_ctx *exec_ctx, void *tp,
   GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "bdp_ping");
 }
 
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args) {
+  size_t i;
+  if (args) {
+    for (i = 0; i < args->num_args; i++) {
+      if (0 == strcmp(args->args[i].key, GRPC_ARG_CLIENT_KEEPALIVE_TIME_S)) {
+        g_default_client_keepalive_time_s = grpc_channel_arg_get_integer(
+            &args->args[i], (grpc_integer_options){
+                                g_default_client_keepalive_time_s, 1, INT_MAX});
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S)) {
+        g_default_client_keepalive_timeout_s = grpc_channel_arg_get_integer(
+            &args->args[i],
+            (grpc_integer_options){g_default_client_keepalive_timeout_s, 0,
+                                   INT_MAX});
+      } else if (0 == strcmp(args->args[i].key,
+                             GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS)) {
+        g_default_keepalive_permit_without_calls =
+            (uint32_t)grpc_channel_arg_get_integer(
+                &args->args[i],
+                (grpc_integer_options){g_default_keepalive_permit_without_calls,
+                                       0, 1});
+      }
+    }
+  }
+}
+
 static void init_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
                                        grpc_error *error) {
   grpc_chttp2_transport *t = arg;
@@ -2146,9 +2197,7 @@ static void finish_keepalive_ping_locked(grpc_exec_ctx *exec_ctx, void *arg,
       grpc_timer_init(
           exec_ctx, &t->keepalive_ping_timer,
           gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), t->keepalive_time),
-          grpc_closure_create(init_keepalive_ping_locked, t,
-                              grpc_combiner_scheduler(t->combiner, false)),
-          gpr_now(GPR_CLOCK_MONOTONIC));
+          &t->init_keepalive_ping_locked, gpr_now(GPR_CLOCK_MONOTONIC));
     }
   }
   GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "keepalive ping end");
diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.c b/src/core/ext/transport/chttp2/transport/frame_ping.c
index de8462a17ea2976ba548672e641fd7dfbcb60ddb..46dafdb62f6d4afcd995d33b6d39f624bf9c95f2 100644
--- a/src/core/ext/transport/chttp2/transport/frame_ping.c
+++ b/src/core/ext/transport/chttp2/transport/frame_ping.c
@@ -40,6 +40,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
+static bool g_disable_ping_ack = false;
+
 grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint64_t opaque_8bytes) {
   grpc_slice slice = grpc_slice_malloc(9 + 8);
   uint8_t *p = GRPC_SLICE_START_PTR(slice);
@@ -101,15 +103,21 @@ grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
     if (p->is_ack) {
       grpc_chttp2_ack_ping(exec_ctx, t, p->opaque_8bytes);
     } else {
-      if (t->ping_ack_count == t->ping_ack_capacity) {
-        t->ping_ack_capacity = GPR_MAX(t->ping_ack_capacity * 3 / 2, 3);
-        t->ping_acks = gpr_realloc(
-            t->ping_acks, t->ping_ack_capacity * sizeof(*t->ping_acks));
+      if (!g_disable_ping_ack) {
+        if (t->ping_ack_count == t->ping_ack_capacity) {
+          t->ping_ack_capacity = GPR_MAX(t->ping_ack_capacity * 3 / 2, 3);
+          t->ping_acks = gpr_realloc(
+              t->ping_acks, t->ping_ack_capacity * sizeof(*t->ping_acks));
+        }
+        t->ping_acks[t->ping_ack_count++] = p->opaque_8bytes;
+        grpc_chttp2_initiate_write(exec_ctx, t, false, "ping response");
       }
-      t->ping_acks[t->ping_ack_count++] = p->opaque_8bytes;
-      grpc_chttp2_initiate_write(exec_ctx, t, false, "ping response");
     }
   }
 
   return GRPC_ERROR_NONE;
 }
+
+void grpc_set_disable_ping_ack(bool disable_ping_ack) {
+  g_disable_ping_ack = disable_ping_ack;
+}
diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.h b/src/core/ext/transport/chttp2/transport/frame_ping.h
index ef642465d7ecb970137497a85a8f3e20f4252c08..01983d2b127ec66a4b4f100eb9467fe849d0e363 100644
--- a/src/core/ext/transport/chttp2/transport/frame_ping.h
+++ b/src/core/ext/transport/chttp2/transport/frame_ping.h
@@ -53,4 +53,7 @@ grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
                                           grpc_chttp2_stream *s,
                                           grpc_slice slice, int is_last);
 
+/* Test-only function for disabling ping ack */
+void grpc_set_disable_ping_ack(bool disable_ping_ack);
+
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H */
diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h
index 3c56c215991f22a9e74c554d411d1d948a452ceb..50993e4ecdf26e300f427a7f194ae3671cdcf522 100644
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@@ -102,6 +102,8 @@ typedef struct {
 typedef struct {
   gpr_timespec last_ping_sent_time;
   int pings_before_data_required;
+  grpc_timer delayed_ping_timer;
+  bool is_delayed_ping_timer_set;
 } grpc_chttp2_repeated_ping_state;
 
 /* deframer state for the overall http2 stream of bytes */
@@ -308,6 +310,7 @@ struct grpc_chttp2_transport {
   grpc_chttp2_repeated_ping_policy ping_policy;
   grpc_chttp2_repeated_ping_state ping_state;
   uint64_t ping_ctr; /* unique id for pings */
+  grpc_closure retry_initiate_ping_locked;
 
   /** ping acks */
   size_t ping_ack_count;
@@ -449,7 +452,6 @@ struct grpc_chttp2_stream {
   int64_t next_message_end_offset;
   int64_t flow_controlled_bytes_written;
   bool complete_fetch_covered_by_poller;
-  grpc_closure complete_fetch;
   grpc_closure complete_fetch_locked;
   grpc_closure *fetching_send_message_finished;
 
@@ -827,4 +829,8 @@ void grpc_chttp2_fail_pending_writes(grpc_exec_ctx *exec_ctx,
 
 uint32_t grpc_chttp2_target_incoming_window(grpc_chttp2_transport *t);
 
+/** Set the default keepalive configurations, must only be called at
+    initialization */
+void grpc_chttp2_config_default_keepalive_args(grpc_channel_args *args);
+
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H */
diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c
index 2b9d93cae7cc0b3db995d081c3684a57e4509891..0869056f56d3c5994bb67808ddd6db6c0073f241 100644
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@@ -101,6 +101,14 @@ static void maybe_initiate_ping(grpc_exec_ctx *exec_ctx,
               "Ping delayed [%p]: not enough time elapsed since last ping",
               t->peer_string);
     }
+    if (!t->ping_state.is_delayed_ping_timer_set) {
+      t->ping_state.is_delayed_ping_timer_set = true;
+      grpc_timer_init(exec_ctx, &t->ping_state.delayed_ping_timer,
+                      gpr_time_add(t->ping_state.last_ping_sent_time,
+                                   t->ping_policy.min_time_between_pings),
+                      &t->retry_initiate_ping_locked,
+                      gpr_now(GPR_CLOCK_MONOTONIC));
+    }
     return;
   }
   /* coalesce equivalent pings into this one */
diff --git a/src/core/lib/channel/http_client_filter.c b/src/core/lib/channel/http_client_filter.c
index 028e9a5d04e0468779352e29b78638fc7dca31ca..17af2013d97278a5d9c145cd636f25f0baa12db5 100644
--- a/src/core/lib/channel/http_client_filter.c
+++ b/src/core/lib/channel/http_client_filter.c
@@ -36,6 +36,7 @@
 #include <grpc/support/string_util.h>
 #include <string.h>
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/percent_encoding.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
@@ -56,7 +57,6 @@ typedef struct call_data {
   grpc_linked_mdelem te_trailers;
   grpc_linked_mdelem content_type;
   grpc_linked_mdelem user_agent;
-  grpc_linked_mdelem payload_bin;
 
   grpc_metadata_batch *recv_initial_metadata;
   grpc_metadata_batch *recv_trailing_metadata;
@@ -292,19 +292,58 @@ static grpc_error *hc_mutate_op(grpc_exec_ctx *exec_ctx,
       continue_send_message(exec_ctx, elem);
 
       if (calld->send_message_blocked == false) {
-        /* when all the send_message data is available, then create a MDELEM and
-        append to headers */
-        grpc_mdelem payload_bin = grpc_mdelem_from_slices(
-            exec_ctx, GRPC_MDSTR_GRPC_PAYLOAD_BIN,
-            grpc_slice_from_copied_buffer((const char *)calld->payload_bytes,
-                                          op->send_message->length));
-        error =
-            grpc_metadata_batch_add_tail(exec_ctx, op->send_initial_metadata,
-                                         &calld->payload_bin, payload_bin);
+        /* when all the send_message data is available, then modify the path
+         * MDELEM by appending base64 encoded query to the path */
+        const int k_url_safe = 1;
+        const int k_multi_line = 0;
+        const unsigned char k_query_separator = '?';
+
+        grpc_slice path_slice =
+            GRPC_MDVALUE(op->send_initial_metadata->idx.named.path->md);
+        /* sum up individual component's lengths and allocate enough memory to
+         * hold combined path+query */
+        size_t estimated_len = GRPC_SLICE_LENGTH(path_slice);
+        estimated_len++; /* for the '?' */
+        estimated_len += grpc_base64_estimate_encoded_size(
+            op->send_message->length, k_url_safe, k_multi_line);
+        estimated_len += 1; /* for the trailing 0 */
+        grpc_slice path_with_query_slice = grpc_slice_malloc(estimated_len);
+
+        /* memcopy individual pieces into this slice */
+        uint8_t *write_ptr =
+            (uint8_t *)GRPC_SLICE_START_PTR(path_with_query_slice);
+        uint8_t *original_path = (uint8_t *)GRPC_SLICE_START_PTR(path_slice);
+        memcpy(write_ptr, original_path, GRPC_SLICE_LENGTH(path_slice));
+        write_ptr += GRPC_SLICE_LENGTH(path_slice);
+
+        *write_ptr = k_query_separator;
+        write_ptr++; /* for the '?' */
+
+        grpc_base64_encode_core((char *)write_ptr, calld->payload_bytes,
+                                op->send_message->length, k_url_safe,
+                                k_multi_line);
+
+        /* remove trailing unused memory and add trailing 0 to terminate string
+         */
+        char *t = (char *)GRPC_SLICE_START_PTR(path_with_query_slice);
+        /* safe to use strlen since base64_encode will always add '\0' */
+        size_t path_length = strlen(t) + 1;
+        *(t + path_length) = '\0';
+        path_with_query_slice =
+            grpc_slice_sub(path_with_query_slice, 0, path_length);
+
+        /* substitute previous path with the new path+query */
+        grpc_mdelem mdelem_path_and_query = grpc_mdelem_from_slices(
+            exec_ctx, GRPC_MDSTR_PATH, path_with_query_slice);
+        grpc_metadata_batch *b = op->send_initial_metadata;
+        error = grpc_metadata_batch_substitute(exec_ctx, b, b->idx.named.path,
+                                               mdelem_path_and_query);
         if (error != GRPC_ERROR_NONE) return error;
+
         calld->on_complete = op->on_complete;
         op->on_complete = &calld->hc_on_complete;
         op->send_message = NULL;
+        grpc_slice_unref_internal(exec_ctx, path_with_query_slice);
       } else {
         /* Not all data is available. Fall back to POST. */
         gpr_log(GPR_DEBUG,
diff --git a/src/core/lib/channel/http_server_filter.c b/src/core/lib/channel/http_server_filter.c
index 41a325bc04b6e5a866dee602176f46f0216bf2f2..df0f95010ba94a819338ab4c8452b85958a5b16a 100644
--- a/src/core/lib/channel/http_server_filter.c
+++ b/src/core/lib/channel/http_server_filter.c
@@ -37,6 +37,7 @@
 #include <grpc/support/log.h>
 #include <string.h>
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/percent_encoding.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
@@ -51,8 +52,8 @@ typedef struct call_data {
   grpc_linked_mdelem status;
   grpc_linked_mdelem content_type;
 
-  /* did this request come with payload-bin */
-  bool seen_payload_bin;
+  /* did this request come with path query containing request payload */
+  bool seen_path_with_query;
   /* flag to ensure payload_bin is delivered only once */
   bool payload_bin_delivered;
 
@@ -61,7 +62,7 @@ typedef struct call_data {
   bool *recv_cacheable_request;
   /** Closure to call when finished with the hs_on_recv hook */
   grpc_closure *on_done_recv;
-  /** Closure to call when we retrieve read message from the payload-bin header
+  /** Closure to call when we retrieve read message from the path URI
    */
   grpc_closure *recv_message_ready;
   grpc_closure *on_complete;
@@ -205,6 +206,43 @@ static grpc_error *server_filter_incoming_metadata(grpc_exec_ctx *exec_ctx,
               grpc_error_set_str(
                   GRPC_ERROR_CREATE_FROM_STATIC_STRING("Missing header"),
                   GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":path")));
+  } else if (*calld->recv_cacheable_request == true) {
+    /* We have a cacheable request made with GET verb. The path contains the
+     * query parameter which is base64 encoded request payload. */
+    const char k_query_separator = '?';
+    grpc_slice path_slice = GRPC_MDVALUE(b->idx.named.path->md);
+    uint8_t *path_ptr = (uint8_t *)GRPC_SLICE_START_PTR(path_slice);
+    size_t path_length = GRPC_SLICE_LENGTH(path_slice);
+    /* offset of the character '?' */
+    size_t offset = 0;
+    for (offset = 0; offset < path_length && *path_ptr != k_query_separator;
+         path_ptr++, offset++)
+      ;
+    if (offset < path_length) {
+      grpc_slice query_slice =
+          grpc_slice_sub(path_slice, offset + 1, path_length);
+
+      /* substitute path metadata with just the path (not query) */
+      grpc_mdelem mdelem_path_without_query = grpc_mdelem_from_slices(
+          exec_ctx, GRPC_MDSTR_PATH, grpc_slice_sub(path_slice, 0, offset));
+
+      grpc_metadata_batch_substitute(exec_ctx, b, b->idx.named.path,
+                                     mdelem_path_without_query);
+
+      /* decode payload from query and add to the slice buffer to be returned */
+      const int k_url_safe = 1;
+      grpc_slice_buffer_add(
+          &calld->read_slice_buffer,
+          grpc_base64_decode(exec_ctx,
+                             (const char *)GRPC_SLICE_START_PTR(query_slice),
+                             k_url_safe));
+      grpc_slice_buffer_stream_init(&calld->read_stream,
+                                    &calld->read_slice_buffer, 0);
+      calld->seen_path_with_query = true;
+      grpc_slice_unref_internal(exec_ctx, query_slice);
+    } else {
+      gpr_log(GPR_ERROR, "GET request without QUERY");
+    }
   }
 
   if (b->idx.named.host != NULL && b->idx.named.authority == NULL) {
@@ -228,16 +266,6 @@ static grpc_error *server_filter_incoming_metadata(grpc_exec_ctx *exec_ctx,
             GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":authority")));
   }
 
-  if (b->idx.named.grpc_payload_bin != NULL) {
-    calld->seen_payload_bin = true;
-    grpc_slice_buffer_add(&calld->read_slice_buffer,
-                          grpc_slice_ref_internal(
-                              GRPC_MDVALUE(b->idx.named.grpc_payload_bin->md)));
-    grpc_slice_buffer_stream_init(&calld->read_stream,
-                                  &calld->read_slice_buffer, 0);
-    grpc_metadata_batch_remove(exec_ctx, b, b->idx.named.grpc_payload_bin);
-  }
-
   return error;
 }
 
@@ -258,8 +286,8 @@ static void hs_on_complete(grpc_exec_ctx *exec_ctx, void *user_data,
                            grpc_error *err) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
-  /* Call recv_message_ready if we got the payload via the header field */
-  if (calld->seen_payload_bin && calld->recv_message_ready != NULL) {
+  /* Call recv_message_ready if we got the payload via the path field */
+  if (calld->seen_path_with_query && calld->recv_message_ready != NULL) {
     *calld->pp_recv_message = calld->payload_bin_delivered
                                   ? NULL
                                   : (grpc_byte_stream *)&calld->read_stream;
@@ -274,7 +302,7 @@ static void hs_recv_message_ready(grpc_exec_ctx *exec_ctx, void *user_data,
                                   grpc_error *err) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
-  if (calld->seen_payload_bin) {
+  if (calld->seen_path_with_query) {
     /* do nothing. This is probably a GET request, and payload will be returned
     in hs_on_complete callback. */
   } else {
diff --git a/src/core/lib/channel/max_age_filter.c b/src/core/lib/channel/max_age_filter.c
new file mode 100644
index 0000000000000000000000000000000000000000..c25481486c3b32d261377999d46edce4b67784a7
--- /dev/null
+++ b/src/core/lib/channel/max_age_filter.c
@@ -0,0 +1,386 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/channel/message_size_filter.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/transport/http2_errors.h"
+#include "src/core/lib/transport/service_config.h"
+
+#define DEFAULT_MAX_CONNECTION_AGE_MS INT_MAX
+#define DEFAULT_MAX_CONNECTION_AGE_GRACE_MS INT_MAX
+#define DEFAULT_MAX_CONNECTION_IDLE_MS INT_MAX
+
+typedef struct channel_data {
+  /* We take a reference to the channel stack for the timer callback */
+  grpc_channel_stack* channel_stack;
+  /* Guards access to max_age_timer, max_age_timer_pending, max_age_grace_timer
+     and max_age_grace_timer_pending */
+  gpr_mu max_age_timer_mu;
+  /* True if the max_age timer callback is currently pending */
+  bool max_age_timer_pending;
+  /* True if the max_age_grace timer callback is currently pending */
+  bool max_age_grace_timer_pending;
+  /* The timer for checking if the channel has reached its max age */
+  grpc_timer max_age_timer;
+  /* The timer for checking if the max-aged channel has uesed up the grace
+     period */
+  grpc_timer max_age_grace_timer;
+  /* The timer for checking if the channel's idle duration reaches
+     max_connection_idle */
+  grpc_timer max_idle_timer;
+  /* Allowed max time a channel may have no outstanding rpcs */
+  gpr_timespec max_connection_idle;
+  /* Allowed max time a channel may exist */
+  gpr_timespec max_connection_age;
+  /* Allowed grace period after the channel reaches its max age */
+  gpr_timespec max_connection_age_grace;
+  /* Closure to run when the channel's idle duration reaches max_connection_idle
+     and should be closed gracefully */
+  grpc_closure close_max_idle_channel;
+  /* Closure to run when the channel reaches its max age and should be closed
+     gracefully */
+  grpc_closure close_max_age_channel;
+  /* Closure to run the channel uses up its max age grace time and should be
+     closed forcibly */
+  grpc_closure force_close_max_age_channel;
+  /* Closure to run when the init fo channel stack is done and the max_idle
+     timer should be started */
+  grpc_closure start_max_idle_timer_after_init;
+  /* Closure to run when the init fo channel stack is done and the max_age timer
+     should be started */
+  grpc_closure start_max_age_timer_after_init;
+  /* Closure to run when the goaway op is finished and the max_age_timer */
+  grpc_closure start_max_age_grace_timer_after_goaway_op;
+  /* Closure to run when the channel connectivity state changes */
+  grpc_closure channel_connectivity_changed;
+  /* Records the current connectivity state */
+  grpc_connectivity_state connectivity_state;
+  /* Number of active calls */
+  gpr_atm call_count;
+} channel_data;
+
+/* Increase the nubmer of active calls. Before the increasement, if there are no
+   calls, the max_idle_timer should be cancelled. */
+static void increase_call_count(grpc_exec_ctx* exec_ctx, channel_data* chand) {
+  if (gpr_atm_full_fetch_add(&chand->call_count, 1) == 0) {
+    grpc_timer_cancel(exec_ctx, &chand->max_idle_timer);
+  }
+}
+
+/* Decrease the nubmer of active calls. After the decrement, if there are no
+   calls, the max_idle_timer should be started. */
+static void decrease_call_count(grpc_exec_ctx* exec_ctx, channel_data* chand) {
+  if (gpr_atm_full_fetch_add(&chand->call_count, -1) == 1) {
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack, "max_age max_idle_timer");
+    grpc_timer_init(
+        exec_ctx, &chand->max_idle_timer,
+        gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), chand->max_connection_idle),
+        &chand->close_max_idle_channel, gpr_now(GPR_CLOCK_MONOTONIC));
+  }
+}
+
+static void start_max_idle_timer_after_init(grpc_exec_ctx* exec_ctx, void* arg,
+                                            grpc_error* error) {
+  channel_data* chand = arg;
+  /* Decrease call_count. If there are no active calls at this time,
+     max_idle_timer will start here. If the number of active calls is not 0,
+     max_idle_timer will start after all the active calls end. */
+  decrease_call_count(exec_ctx, chand);
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age start_max_idle_timer_after_init");
+}
+
+static void start_max_age_timer_after_init(grpc_exec_ctx* exec_ctx, void* arg,
+                                           grpc_error* error) {
+  channel_data* chand = arg;
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = true;
+  GRPC_CHANNEL_STACK_REF(chand->channel_stack, "max_age max_age_timer");
+  grpc_timer_init(
+      exec_ctx, &chand->max_age_timer,
+      gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), chand->max_connection_age),
+      &chand->close_max_age_channel, gpr_now(GPR_CLOCK_MONOTONIC));
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  grpc_transport_op* op = grpc_make_transport_op(NULL);
+  op->on_connectivity_state_change = &chand->channel_connectivity_changed,
+  op->connectivity_state = &chand->connectivity_state;
+  grpc_channel_next_op(exec_ctx,
+                       grpc_channel_stack_element(chand->channel_stack, 0), op);
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age start_max_age_timer_after_init");
+}
+
+static void start_max_age_grace_timer_after_goaway_op(grpc_exec_ctx* exec_ctx,
+                                                      void* arg,
+                                                      grpc_error* error) {
+  channel_data* chand = arg;
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_grace_timer_pending = true;
+  GRPC_CHANNEL_STACK_REF(chand->channel_stack, "max_age max_age_grace_timer");
+  grpc_timer_init(exec_ctx, &chand->max_age_grace_timer,
+                  gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                               chand->max_connection_age_grace),
+                  &chand->force_close_max_age_channel,
+                  gpr_now(GPR_CLOCK_MONOTONIC));
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age start_max_age_grace_timer_after_goaway_op");
+}
+
+static void close_max_idle_channel(grpc_exec_ctx* exec_ctx, void* arg,
+                                   grpc_error* error) {
+  channel_data* chand = arg;
+  gpr_atm_no_barrier_fetch_add(&chand->call_count, 1);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_transport_op* op = grpc_make_transport_op(NULL);
+    op->goaway_error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("max_idle"),
+                           GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_NO_ERROR);
+    grpc_channel_element* elem =
+        grpc_channel_stack_element(chand->channel_stack, 0);
+    elem->filter->start_transport_op(exec_ctx, elem, op);
+  } else if (error != GRPC_ERROR_CANCELLED) {
+    GRPC_LOG_IF_ERROR("close_max_idle_channel", error);
+  }
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age max_idle_timer");
+}
+
+static void close_max_age_channel(grpc_exec_ctx* exec_ctx, void* arg,
+                                  grpc_error* error) {
+  channel_data* chand = arg;
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = false;
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  if (error == GRPC_ERROR_NONE) {
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_age_grace_timer_after_goaway_op");
+    grpc_transport_op* op = grpc_make_transport_op(
+        &chand->start_max_age_grace_timer_after_goaway_op);
+    op->goaway_error =
+        grpc_error_set_int(GRPC_ERROR_CREATE_FROM_STATIC_STRING("max_age"),
+                           GRPC_ERROR_INT_HTTP2_ERROR, GRPC_HTTP2_NO_ERROR);
+    grpc_channel_element* elem =
+        grpc_channel_stack_element(chand->channel_stack, 0);
+    elem->filter->start_transport_op(exec_ctx, elem, op);
+  } else if (error != GRPC_ERROR_CANCELLED) {
+    GRPC_LOG_IF_ERROR("close_max_age_channel", error);
+  }
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age max_age_timer");
+}
+
+static void force_close_max_age_channel(grpc_exec_ctx* exec_ctx, void* arg,
+                                        grpc_error* error) {
+  channel_data* chand = arg;
+  gpr_mu_lock(&chand->max_age_timer_mu);
+  chand->max_age_grace_timer_pending = false;
+  gpr_mu_unlock(&chand->max_age_timer_mu);
+  if (error == GRPC_ERROR_NONE) {
+    grpc_transport_op* op = grpc_make_transport_op(NULL);
+    op->disconnect_with_error =
+        GRPC_ERROR_CREATE_FROM_STATIC_STRING("Channel reaches max age");
+    grpc_channel_element* elem =
+        grpc_channel_stack_element(chand->channel_stack, 0);
+    elem->filter->start_transport_op(exec_ctx, elem, op);
+  } else if (error != GRPC_ERROR_CANCELLED) {
+    GRPC_LOG_IF_ERROR("force_close_max_age_channel", error);
+  }
+  GRPC_CHANNEL_STACK_UNREF(exec_ctx, chand->channel_stack,
+                           "max_age max_age_grace_timer");
+}
+
+static void channel_connectivity_changed(grpc_exec_ctx* exec_ctx, void* arg,
+                                         grpc_error* error) {
+  channel_data* chand = arg;
+  if (chand->connectivity_state != GRPC_CHANNEL_SHUTDOWN) {
+    grpc_transport_op* op = grpc_make_transport_op(NULL);
+    op->on_connectivity_state_change = &chand->channel_connectivity_changed,
+    op->connectivity_state = &chand->connectivity_state;
+    grpc_channel_next_op(
+        exec_ctx, grpc_channel_stack_element(chand->channel_stack, 0), op);
+  } else {
+    gpr_mu_lock(&chand->max_age_timer_mu);
+    if (chand->max_age_timer_pending) {
+      grpc_timer_cancel(exec_ctx, &chand->max_age_timer);
+      chand->max_age_timer_pending = false;
+    }
+    if (chand->max_age_grace_timer_pending) {
+      grpc_timer_cancel(exec_ctx, &chand->max_age_grace_timer);
+      chand->max_age_grace_timer_pending = false;
+    }
+    gpr_mu_unlock(&chand->max_age_timer_mu);
+    /* If there are no active calls, this increasement will cancel
+       max_idle_timer, and prevent max_idle_timer from being started in the
+       future. */
+    increase_call_count(exec_ctx, chand);
+  }
+}
+
+/* Constructor for call_data. */
+static grpc_error* init_call_elem(grpc_exec_ctx* exec_ctx,
+                                  grpc_call_element* elem,
+                                  const grpc_call_element_args* args) {
+  channel_data* chand = elem->channel_data;
+  increase_call_count(exec_ctx, chand);
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for call_data. */
+static void destroy_call_elem(grpc_exec_ctx* exec_ctx, grpc_call_element* elem,
+                              const grpc_call_final_info* final_info,
+                              grpc_closure* ignored) {
+  channel_data* chand = elem->channel_data;
+  decrease_call_count(exec_ctx, chand);
+}
+
+/* Constructor for channel_data. */
+static grpc_error* init_channel_elem(grpc_exec_ctx* exec_ctx,
+                                     grpc_channel_element* elem,
+                                     grpc_channel_element_args* args) {
+  channel_data* chand = elem->channel_data;
+  gpr_mu_init(&chand->max_age_timer_mu);
+  chand->max_age_timer_pending = false;
+  chand->max_age_grace_timer_pending = false;
+  chand->channel_stack = args->channel_stack;
+  chand->max_connection_age =
+      DEFAULT_MAX_CONNECTION_AGE_MS == INT_MAX
+          ? gpr_inf_future(GPR_TIMESPAN)
+          : gpr_time_from_millis(DEFAULT_MAX_CONNECTION_AGE_MS, GPR_TIMESPAN);
+  chand->max_connection_age_grace =
+      DEFAULT_MAX_CONNECTION_AGE_GRACE_MS == INT_MAX
+          ? gpr_inf_future(GPR_TIMESPAN)
+          : gpr_time_from_millis(DEFAULT_MAX_CONNECTION_AGE_GRACE_MS,
+                                 GPR_TIMESPAN);
+  chand->max_connection_idle =
+      DEFAULT_MAX_CONNECTION_IDLE_MS == INT_MAX
+          ? gpr_inf_future(GPR_TIMESPAN)
+          : gpr_time_from_millis(DEFAULT_MAX_CONNECTION_IDLE_MS, GPR_TIMESPAN);
+  for (size_t i = 0; i < args->channel_args->num_args; ++i) {
+    if (0 == strcmp(args->channel_args->args[i].key,
+                    GRPC_ARG_MAX_CONNECTION_AGE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i],
+          (grpc_integer_options){DEFAULT_MAX_CONNECTION_AGE_MS, 1, INT_MAX});
+      chand->max_connection_age =
+          value == INT_MAX ? gpr_inf_future(GPR_TIMESPAN)
+                           : gpr_time_from_millis(value, GPR_TIMESPAN);
+    } else if (0 == strcmp(args->channel_args->args[i].key,
+                           GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i],
+          (grpc_integer_options){DEFAULT_MAX_CONNECTION_AGE_GRACE_MS, 0,
+                                 INT_MAX});
+      chand->max_connection_age_grace =
+          value == INT_MAX ? gpr_inf_future(GPR_TIMESPAN)
+                           : gpr_time_from_millis(value, GPR_TIMESPAN);
+    } else if (0 == strcmp(args->channel_args->args[i].key,
+                           GRPC_ARG_MAX_CONNECTION_IDLE_MS)) {
+      const int value = grpc_channel_arg_get_integer(
+          &args->channel_args->args[i],
+          (grpc_integer_options){DEFAULT_MAX_CONNECTION_IDLE_MS, 1, INT_MAX});
+      chand->max_connection_idle =
+          value == INT_MAX ? gpr_inf_future(GPR_TIMESPAN)
+                           : gpr_time_from_millis(value, GPR_TIMESPAN);
+    }
+  }
+  grpc_closure_init(&chand->close_max_idle_channel, close_max_idle_channel,
+                    chand, grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->close_max_age_channel, close_max_age_channel, chand,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->force_close_max_age_channel,
+                    force_close_max_age_channel, chand,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->start_max_idle_timer_after_init,
+                    start_max_idle_timer_after_init, chand,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->start_max_age_timer_after_init,
+                    start_max_age_timer_after_init, chand,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->start_max_age_grace_timer_after_goaway_op,
+                    start_max_age_grace_timer_after_goaway_op, chand,
+                    grpc_schedule_on_exec_ctx);
+  grpc_closure_init(&chand->channel_connectivity_changed,
+                    channel_connectivity_changed, chand,
+                    grpc_schedule_on_exec_ctx);
+
+  if (gpr_time_cmp(chand->max_connection_age, gpr_inf_future(GPR_TIMESPAN)) !=
+      0) {
+    /* When the channel reaches its max age, we send down an op with
+       goaway_error set.  However, we can't send down any ops until after the
+       channel stack is fully initialized.  If we start the timer here, we have
+       no guarantee that the timer won't pop before channel stack initialization
+       is finished.  To avoid that problem, we create a closure to start the
+       timer, and we schedule that closure to be run after call stack
+       initialization is done. */
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_age_timer_after_init");
+    grpc_closure_sched(exec_ctx, &chand->start_max_age_timer_after_init,
+                       GRPC_ERROR_NONE);
+  }
+
+  /* Initialize the number of calls as 1, so that the max_idle_timer will not
+     start until start_max_idle_timer_after_init is invoked. */
+  gpr_atm_rel_store(&chand->call_count, 1);
+  if (gpr_time_cmp(chand->max_connection_idle, gpr_inf_future(GPR_TIMESPAN)) !=
+      0) {
+    GRPC_CHANNEL_STACK_REF(chand->channel_stack,
+                           "max_age start_max_idle_timer_after_init");
+    grpc_closure_sched(exec_ctx, &chand->start_max_idle_timer_after_init,
+                       GRPC_ERROR_NONE);
+  }
+  return GRPC_ERROR_NONE;
+}
+
+/* Destructor for channel_data. */
+static void destroy_channel_elem(grpc_exec_ctx* exec_ctx,
+                                 grpc_channel_element* elem) {}
+
+const grpc_channel_filter grpc_max_age_filter = {
+    grpc_call_next_op,
+    grpc_channel_next_op,
+    0, /* sizeof_call_data */
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
+    "max_age"};
diff --git a/src/core/lib/channel/max_age_filter.h b/src/core/lib/channel/max_age_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..93e357a88e6832ed0c07ac4ba44990026e7331e4
--- /dev/null
+++ b/src/core/lib/channel/max_age_filter.h
@@ -0,0 +1,39 @@
+//
+// Copyright 2017, 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_CORE_LIB_CHANNEL_MAX_AGE_FILTER_H
+#define GRPC_CORE_LIB_CHANNEL_MAX_AGE_FILTER_H
+
+#include "src/core/lib/channel/channel_stack.h"
+
+extern const grpc_channel_filter grpc_max_age_filter;
+
+#endif /* GRPC_CORE_LIB_CHANNEL_MAX_AGE_FILTER_H */
diff --git a/src/core/lib/http/httpcli_security_connector.c b/src/core/lib/http/httpcli_security_connector.c
index be6a6d618a12db748f71ee967d65d6fcc866de14..fc338342e48af1cea38baa9c0f581ffa108a2442 100644
--- a/src/core/lib/http/httpcli_security_connector.c
+++ b/src/core/lib/http/httpcli_security_connector.c
@@ -43,7 +43,7 @@
 #include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/tsi/ssl_transport_security.h"
+#include "src/core/tsi/ssl_transport_security.h"
 
 typedef struct {
   grpc_channel_security_connector base;
diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c
index 1924e76f13a471f4809b186a9430c098e82f03b5..f6372c0f3f6425fc29407d891c73c2756dc12bed 100644
--- a/src/core/lib/iomgr/ev_epoll_linux.c
+++ b/src/core/lib/iomgr/ev_epoll_linux.c
@@ -1107,19 +1107,20 @@ static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
 static void notify_on(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
                       grpc_closure *closure) {
   while (true) {
-    /* Fast-path: CLOSURE_NOT_READY -> <closure>.
-       The 'release' cas here matches the 'acquire' load in set_ready and
-       set_shutdown ensuring that the closure (scheduled by set_ready or
-       set_shutdown) happens-after the I/O event on the fd */
-    if (gpr_atm_rel_cas(state, CLOSURE_NOT_READY, (gpr_atm)closure)) {
-      return; /* Fast-path successful. Return */
-    }
-
-    /* Slowpath. The 'acquire' load matches the 'release' cas in set_ready and
-       set_shutdown */
-    gpr_atm curr = gpr_atm_acq_load(state);
+    gpr_atm curr = gpr_atm_no_barrier_load(state);
     switch (curr) {
       case CLOSURE_NOT_READY: {
+        /* CLOSURE_NOT_READY -> <closure>.
+
+           We're guaranteed by API that there's an acquire barrier before here,
+           so there's no need to double-dip and this can be a release-only.
+
+           The release itself pairs with the acquire half of a set_ready full
+           barrier. */
+        if (gpr_atm_rel_cas(state, CLOSURE_NOT_READY, (gpr_atm)closure)) {
+          return; /* Successful. Return */
+        }
+
         break; /* retry */
       }
 
@@ -1134,7 +1135,7 @@ static void notify_on(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
            is no other code that needs to 'happen-after' this) */
         if (gpr_atm_no_barrier_cas(state, CLOSURE_READY, CLOSURE_NOT_READY)) {
           grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_NONE);
-          return; /* Slow-path successful. Return */
+          return; /* Successful. Return */
         }
 
         break; /* retry */
@@ -1165,30 +1166,19 @@ static void notify_on(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
 
 static void set_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
                          grpc_error *shutdown_err) {
-  /* Try the fast-path first (i.e expect the current value to be
-     CLOSURE_NOT_READY */
-  gpr_atm curr = CLOSURE_NOT_READY;
   gpr_atm new_state = (gpr_atm)shutdown_err | FD_SHUTDOWN_BIT;
 
   while (true) {
-    /* The 'release' cas here matches the 'acquire' load in notify_on to ensure
-       that the closure it schedules 'happens-after' the set_shutdown is called
-       on the fd */
-    if (gpr_atm_rel_cas(state, curr, new_state)) {
-      return; /* Fast-path successful. Return */
-    }
-
-    /* Fallback to slowpath. This 'acquire' load matches the 'release' cas in
-       notify_on and set_ready */
-    curr = gpr_atm_acq_load(state);
+    gpr_atm curr = gpr_atm_no_barrier_load(state);
     switch (curr) {
-      case CLOSURE_READY: {
+      case CLOSURE_READY:
+      case CLOSURE_NOT_READY:
+        /* Need a full barrier here so that the initial load in notify_on
+           doesn't need a barrier */
+        if (gpr_atm_full_cas(state, curr, new_state)) {
+          return; /* early out */
+        }
         break; /* retry */
-      }
-
-      case CLOSURE_NOT_READY: {
-        break; /* retry */
-      }
 
       default: {
         /* 'curr' is either a closure or the fd is already shutdown */
@@ -1199,10 +1189,11 @@ static void set_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
         }
 
         /* Fd is not shutdown. Schedule the closure and move the state to
-           shutdown state. The 'release' cas here matches the 'acquire' load in
-           notify_on to ensure that the closure it schedules 'happens-after'
-           the set_shutdown is called on the fd */
-        if (gpr_atm_rel_cas(state, curr, new_state)) {
+           shutdown state.
+           Needs an acquire to pair with setting the closure (and get a
+           happens-after on that edge), and a release to pair with anything
+           loading the shutdown state. */
+        if (gpr_atm_full_cas(state, curr, new_state)) {
           grpc_closure_sched(exec_ctx, (grpc_closure *)curr,
                              GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
                                  "FD Shutdown", &shutdown_err, 1));
@@ -1220,52 +1211,42 @@ static void set_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state,
 }
 
 static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, gpr_atm *state) {
-  /* Try an optimistic case first (i.e assume current state is
-     CLOSURE_NOT_READY).
-
-     This 'release' cas matches the 'acquire' load in notify_on ensuring that
-     any closure (scheduled by notify_on) 'happens-after' the return from
-     epoll_pwait */
-  if (gpr_atm_rel_cas(state, CLOSURE_NOT_READY, CLOSURE_READY)) {
-    return; /* early out */
-  }
-
-  /* The 'acquire' load here matches the 'release' cas in notify_on and
-     set_shutdown */
-  gpr_atm curr = gpr_atm_acq_load(state);
-  switch (curr) {
-    case CLOSURE_READY: {
-      /* Already ready. We are done here */
-      break;
-    }
+  while (true) {
+    gpr_atm curr = gpr_atm_no_barrier_load(state);
 
-    case CLOSURE_NOT_READY: {
-      /* The state was not CLOSURE_NOT_READY when we checked initially at the
-         beginning of this function but now it is CLOSURE_NOT_READY again.
-         This is only possible if the state transitioned out of
-         CLOSURE_NOT_READY to either CLOSURE_READY or <some closure> and then
-         back to CLOSURE_NOT_READY again (i.e after we entered this function,
-         the fd became "ready" and the necessary actions were already done).
-         So there is no need to make the state CLOSURE_READY now */
-      break;
-    }
+    switch (curr) {
+      case CLOSURE_READY: {
+        /* Already ready. We are done here */
+        return;
+      }
 
-    default: {
-      /* 'curr' is either a closure or the fd is shutdown */
-      if ((curr & FD_SHUTDOWN_BIT) > 0) {
-        /* The fd is shutdown. Do nothing */
-      } else if (gpr_atm_no_barrier_cas(state, curr, CLOSURE_NOT_READY)) {
-        /* The cas above was no-barrier since the state is being transitioned to
-           CLOSURE_NOT_READY; notify_on and set_shutdown do not schedule any
-           closures when transitioning out of CLOSURE_NO_READY state (i.e there
-           is no other code that needs to 'happen-after' this) */
+      case CLOSURE_NOT_READY: {
+        /* No barrier required as we're transitioning to a state that does not
+           involve a closure */
+        if (gpr_atm_no_barrier_cas(state, CLOSURE_NOT_READY, CLOSURE_READY)) {
+          return; /* early out */
+        }
+        break; /* retry */
+      }
 
-        grpc_closure_sched(exec_ctx, (grpc_closure *)curr, GRPC_ERROR_NONE);
+      default: {
+        /* 'curr' is either a closure or the fd is shutdown */
+        if ((curr & FD_SHUTDOWN_BIT) > 0) {
+          /* The fd is shutdown. Do nothing */
+          return;
+        }
+        /* Full cas: acquire pairs with this cas' release in the event of a
+           spurious set_ready; release pairs with this or the acquire in
+           notify_on (or set_shutdown) */
+        else if (gpr_atm_full_cas(state, curr, CLOSURE_NOT_READY)) {
+          grpc_closure_sched(exec_ctx, (grpc_closure *)curr, GRPC_ERROR_NONE);
+          return;
+        }
+        /* else the state changed again (only possible by either a racing
+           set_ready or set_shutdown functions. In both these cases, the closure
+           would have been scheduled for execution. So we are done here */
+        return;
       }
-      /* else the state changed again (only possible by either a racing
-         set_ready or set_shutdown functions. In both these cases, the closure
-         would have been scheduled for execution. So we are done here */
-      break;
     }
   }
 }
diff --git a/src/core/lib/iomgr/resource_quota.c b/src/core/lib/iomgr/resource_quota.c
index 511ffdcdf13bc5c7736c53a3dd30aeb338c90a59..8dcd80d001145afb122d89f79d00f7bcc6a161e3 100644
--- a/src/core/lib/iomgr/resource_quota.c
+++ b/src/core/lib/iomgr/resource_quota.c
@@ -279,11 +279,17 @@ static void rq_step_sched(grpc_exec_ctx *exec_ctx,
 /* update the atomically available resource estimate - use no barriers since
    timeliness of delivery really doesn't matter much */
 static void rq_update_estimate(grpc_resource_quota *resource_quota) {
+  gpr_atm memory_usage_estimation = MEMORY_USAGE_ESTIMATION_MAX;
+  if (resource_quota->size != 0) {
+    memory_usage_estimation =
+        GPR_CLAMP((gpr_atm)((1.0 -
+                             ((double)resource_quota->free_pool) /
+                                 ((double)resource_quota->size)) *
+                            MEMORY_USAGE_ESTIMATION_MAX),
+                  0, MEMORY_USAGE_ESTIMATION_MAX);
+  }
   gpr_atm_no_barrier_store(&resource_quota->memory_usage_estimation,
-                           (gpr_atm)((1.0 -
-                                      ((double)resource_quota->free_pool) /
-                                          ((double)resource_quota->size)) *
-                                     MEMORY_USAGE_ESTIMATION_MAX));
+                           memory_usage_estimation);
 }
 
 /* returns true if all allocations are completed */
diff --git a/src/core/lib/iomgr/socket_factory_posix.c b/src/core/lib/iomgr/socket_factory_posix.c
new file mode 100644
index 0000000000000000000000000000000000000000..1050a14c4698b7f4650d70e0c51a568f6c50b479
--- /dev/null
+++ b/src/core/lib/iomgr/socket_factory_posix.c
@@ -0,0 +1,110 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_POSIX_SOCKET
+
+#include "src/core/lib/iomgr/socket_factory_posix.h"
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/useful.h>
+
+void grpc_socket_factory_init(grpc_socket_factory *factory,
+                              const grpc_socket_factory_vtable *vtable) {
+  factory->vtable = vtable;
+  gpr_ref_init(&factory->refcount, 1);
+}
+
+int grpc_socket_factory_socket(grpc_socket_factory *factory, int domain,
+                               int type, int protocol) {
+  return factory->vtable->socket(factory, domain, type, protocol);
+}
+
+int grpc_socket_factory_bind(grpc_socket_factory *factory, int sockfd,
+                             const grpc_resolved_address *addr) {
+  return factory->vtable->bind(factory, sockfd, addr);
+}
+
+int grpc_socket_factory_compare(grpc_socket_factory *a,
+                                grpc_socket_factory *b) {
+  int c = GPR_ICMP(a, b);
+  if (c != 0) {
+    grpc_socket_factory *sma = a;
+    grpc_socket_factory *smb = b;
+    c = GPR_ICMP(sma->vtable, smb->vtable);
+    if (c == 0) {
+      c = sma->vtable->compare(sma, smb);
+    }
+  }
+  return c;
+}
+
+grpc_socket_factory *grpc_socket_factory_ref(grpc_socket_factory *factory) {
+  gpr_ref(&factory->refcount);
+  return factory;
+}
+
+void grpc_socket_factory_unref(grpc_socket_factory *factory) {
+  if (gpr_unref(&factory->refcount)) {
+    factory->vtable->destroy(factory);
+  }
+}
+
+static void *socket_factory_arg_copy(void *p) {
+  return grpc_socket_factory_ref(p);
+}
+
+static void socket_factory_arg_destroy(grpc_exec_ctx *exec_ctx, void *p) {
+  grpc_socket_factory_unref(p);
+}
+
+static int socket_factory_cmp(void *a, void *b) {
+  return grpc_socket_factory_compare((grpc_socket_factory *)a,
+                                     (grpc_socket_factory *)b);
+}
+
+static const grpc_arg_pointer_vtable socket_factory_arg_vtable = {
+    socket_factory_arg_copy, socket_factory_arg_destroy, socket_factory_cmp};
+
+grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory *factory) {
+  grpc_arg arg;
+  arg.type = GRPC_ARG_POINTER;
+  arg.key = GRPC_ARG_SOCKET_FACTORY;
+  arg.value.pointer.vtable = &socket_factory_arg_vtable;
+  arg.value.pointer.p = factory;
+  return arg;
+}
+
+#endif
diff --git a/src/core/lib/iomgr/socket_factory_posix.h b/src/core/lib/iomgr/socket_factory_posix.h
new file mode 100644
index 0000000000000000000000000000000000000000..2c63299030caf36ab5821374fcc9573ae9d3d242
--- /dev/null
+++ b/src/core/lib/iomgr/socket_factory_posix.h
@@ -0,0 +1,90 @@
+/*
+ *
+ * Copyright 2017, 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_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** The virtual table of grpc_socket_factory */
+typedef struct {
+  /** Replacement for socket(2) */
+  int (*socket)(grpc_socket_factory *factory, int domain, int type,
+                int protocol);
+  /** Replacement for bind(2) */
+  int (*bind)(grpc_socket_factory *factory, int sockfd,
+              const grpc_resolved_address *addr);
+  /** Compare socket factory \a a and \a b */
+  int (*compare)(grpc_socket_factory *a, grpc_socket_factory *b);
+  /** Destroys the socket factory instance */
+  void (*destroy)(grpc_socket_factory *factory);
+} grpc_socket_factory_vtable;
+
+/** The Socket Factory interface allows changes on socket options */
+struct grpc_socket_factory {
+  const grpc_socket_factory_vtable *vtable;
+  gpr_refcount refcount;
+};
+
+/** called by concrete implementations to initialize the base struct */
+void grpc_socket_factory_init(grpc_socket_factory *factory,
+                              const grpc_socket_factory_vtable *vtable);
+
+/** Wrap \a factory as a grpc_arg */
+grpc_arg grpc_socket_factory_to_arg(grpc_socket_factory *factory);
+
+/** Perform the equivalent of a socket(2) operation using \a factory */
+int grpc_socket_factory_socket(grpc_socket_factory *factory, int domain,
+                               int type, int protocol);
+
+/** Perform the equivalent of a bind(2) operation using \a factory */
+int grpc_socket_factory_bind(grpc_socket_factory *factory, int sockfd,
+                             const grpc_resolved_address *addr);
+
+/** Compare if \a a and \a b are the same factory or have same settings */
+int grpc_socket_factory_compare(grpc_socket_factory *a, grpc_socket_factory *b);
+
+grpc_socket_factory *grpc_socket_factory_ref(grpc_socket_factory *factory);
+void grpc_socket_factory_unref(grpc_socket_factory *factory);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_FACTORY_POSIX_H */
diff --git a/src/core/lib/iomgr/socket_utils_common_posix.c b/src/core/lib/iomgr/socket_utils_common_posix.c
index b69c924d4acf81836542e421492ece7f1554036b..bbe642d0fb4a439764c5d685701795f01198813b 100644
--- a/src/core/lib/iomgr/socket_utils_common_posix.c
+++ b/src/core/lib/iomgr/socket_utils_common_posix.c
@@ -278,11 +278,25 @@ static grpc_error *error_for_fd(int fd, const grpc_resolved_address *addr) {
 grpc_error *grpc_create_dualstack_socket(
     const grpc_resolved_address *resolved_addr, int type, int protocol,
     grpc_dualstack_mode *dsmode, int *newfd) {
+  return grpc_create_dualstack_socket_using_factory(NULL, resolved_addr, type,
+                                                    protocol, dsmode, newfd);
+}
+
+static int create_socket(grpc_socket_factory *factory, int domain, int type,
+                         int protocol) {
+  return (factory != NULL)
+             ? grpc_socket_factory_socket(factory, domain, type, protocol)
+             : socket(domain, type, protocol);
+}
+
+grpc_error *grpc_create_dualstack_socket_using_factory(
+    grpc_socket_factory *factory, const grpc_resolved_address *resolved_addr,
+    int type, int protocol, grpc_dualstack_mode *dsmode, int *newfd) {
   const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
   int family = addr->sa_family;
   if (family == AF_INET6) {
     if (grpc_ipv6_loopback_available()) {
-      *newfd = socket(family, type, protocol);
+      *newfd = create_socket(factory, family, type, protocol);
     } else {
       *newfd = -1;
       errno = EAFNOSUPPORT;
@@ -304,7 +318,7 @@ grpc_error *grpc_create_dualstack_socket(
     family = AF_INET;
   }
   *dsmode = family == AF_INET ? GRPC_DSMODE_IPV4 : GRPC_DSMODE_NONE;
-  *newfd = socket(family, type, protocol);
+  *newfd = create_socket(factory, family, type, protocol);
   return error_for_fd(*newfd, resolved_addr);
 }
 
diff --git a/src/core/lib/iomgr/socket_utils_posix.h b/src/core/lib/iomgr/socket_utils_posix.h
index e84d3781a15f9d193476806f61f568c959870def..2c2fc95ff98460e36a9cd749d067407b7d8b7312 100644
--- a/src/core/lib/iomgr/socket_utils_posix.h
+++ b/src/core/lib/iomgr/socket_utils_posix.h
@@ -41,6 +41,7 @@
 
 #include <grpc/impl/codegen/grpc_types.h>
 #include "src/core/lib/iomgr/error.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
 #include "src/core/lib/iomgr/socket_mutator.h"
 
 /* a wrapper for accept or accept4 */
@@ -137,4 +138,10 @@ grpc_error *grpc_create_dualstack_socket(const grpc_resolved_address *addr,
                                          grpc_dualstack_mode *dsmode,
                                          int *newfd);
 
+/* Same as grpc_create_dualstack_socket(), but use the given socket factory (if
+   non-null) to create the socket, rather than calling socket() directly. */
+grpc_error *grpc_create_dualstack_socket_using_factory(
+    grpc_socket_factory *factory, const grpc_resolved_address *addr, int type,
+    int protocol, grpc_dualstack_mode *dsmode, int *newfd);
+
 #endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H */
diff --git a/src/core/lib/iomgr/tcp_server_posix.c b/src/core/lib/iomgr/tcp_server_posix.c
index e1efbd414f9b05b518fbaf1687bdf0ed23c2a647..d6a017cf7f687770fea031cb1c17eee5661b5a6c 100644
--- a/src/core/lib/iomgr/tcp_server_posix.c
+++ b/src/core/lib/iomgr/tcp_server_posix.c
@@ -185,10 +185,7 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   /* delete ALL the things */
   gpr_mu_lock(&s->mu);
 
-  if (!s->shutdown) {
-    gpr_mu_unlock(&s->mu);
-    return;
-  }
+  GPR_ASSERT(s->shutdown);
 
   if (s->head) {
     grpc_tcp_listener *sp;
@@ -301,7 +298,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *err) {
 
 error:
   gpr_mu_lock(&sp->server->mu);
-  if (0 == --sp->server->active_ports) {
+  if (0 == --sp->server->active_ports && sp->server->shutdown) {
     gpr_mu_unlock(&sp->server->mu);
     deactivated_all_ports(exec_ctx, sp->server);
   } else {
diff --git a/src/core/lib/iomgr/tcp_server_utils_posix_common.c b/src/core/lib/iomgr/tcp_server_utils_posix_common.c
index 283b92b0a2f8177a3570321b4b6b5cb94b743d2c..af2b00b4b541edc5f021dd2f8df0edc6ab49f552 100644
--- a/src/core/lib/iomgr/tcp_server_utils_posix_common.c
+++ b/src/core/lib/iomgr/tcp_server_utils_posix_common.c
@@ -33,7 +33,7 @@
 
 #include "src/core/lib/iomgr/port.h"
 
-#ifdef GRPC_HAVE_IFADDRS
+#ifdef GRPC_POSIX_SOCKET
 
 #include "src/core/lib/iomgr/tcp_server_utils_posix.h"
 
@@ -218,4 +218,4 @@ error:
   return ret;
 }
 
-#endif /* GRPC_HAVE_IFADDRS */
+#endif /* GRPC_POSIX_SOCKET */
diff --git a/src/core/lib/iomgr/timer_uv.c b/src/core/lib/iomgr/timer_uv.c
index f28a14405dbb4e18537e53adbf302df6f1befabc..8e8a07578c6a6d693e10e48816d8401e3776174f 100644
--- a/src/core/lib/iomgr/timer_uv.c
+++ b/src/core/lib/iomgr/timer_uv.c
@@ -78,6 +78,10 @@ void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
   uv_timer->data = timer;
   timer->uv_timer = uv_timer;
   uv_timer_start(uv_timer, run_expired_timer, timeout, 0);
+  /* We assume that gRPC timers are only used alongside other active gRPC
+     objects, and that there will therefore always be something else keeping
+     the uv loop alive whenever there is a timer */
+  uv_unref((uv_handle_t *)uv_timer);
 }
 
 void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
diff --git a/src/core/lib/iomgr/udp_server.c b/src/core/lib/iomgr/udp_server.c
index 28f2bd9359868d1e2423c50bccc145bf147d6927..60579e18ba58924855c1ab6698cfbd56ddc9b053 100644
--- a/src/core/lib/iomgr/udp_server.c
+++ b/src/core/lib/iomgr/udp_server.c
@@ -59,11 +59,13 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
+#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
 #include "src/core/lib/iomgr/socket_utils_posix.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
 #include "src/core/lib/support/string.h"
@@ -89,6 +91,9 @@ struct grpc_udp_listener {
 struct grpc_udp_server {
   gpr_mu mu;
 
+  /* factory to use for creating and binding sockets, or NULL */
+  grpc_socket_factory *socket_factory;
+
   /* active port count: how many ports are actually still listening */
   size_t active_ports;
   /* destroyed port count: how many ports are completely destroyed */
@@ -113,9 +118,24 @@ struct grpc_udp_server {
   void *user_data;
 };
 
-grpc_udp_server *grpc_udp_server_create(void) {
+static grpc_socket_factory *get_socket_factory(const grpc_channel_args *args) {
+  if (args) {
+    const grpc_arg *arg = grpc_channel_args_find(args, GRPC_ARG_SOCKET_FACTORY);
+    if (arg) {
+      GPR_ASSERT(arg->type == GRPC_ARG_POINTER);
+      return arg->value.pointer.p;
+    }
+  }
+  return NULL;
+}
+
+grpc_udp_server *grpc_udp_server_create(const grpc_channel_args *args) {
   grpc_udp_server *s = gpr_malloc(sizeof(grpc_udp_server));
   gpr_mu_init(&s->mu);
+  s->socket_factory = get_socket_factory(args);
+  if (s->socket_factory) {
+    grpc_socket_factory_ref(s->socket_factory);
+  }
   s->active_ports = 0;
   s->destroyed_ports = 0;
   s->shutdown = 0;
@@ -139,6 +159,10 @@ static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
     gpr_free(sp);
   }
 
+  if (s->socket_factory) {
+    grpc_socket_factory_unref(s->socket_factory);
+  }
+
   gpr_free(s);
 }
 
@@ -162,10 +186,7 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
   /* delete ALL the things */
   gpr_mu_lock(&s->mu);
 
-  if (!s->shutdown) {
-    gpr_mu_unlock(&s->mu);
-    return;
-  }
+  GPR_ASSERT(s->shutdown);
 
   if (s->head) {
     grpc_udp_listener *sp;
@@ -215,8 +236,17 @@ void grpc_udp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_udp_server *s,
   }
 }
 
+static int bind_socket(grpc_socket_factory *socket_factory, int sockfd,
+                       const grpc_resolved_address *addr) {
+  return (socket_factory != NULL)
+             ? grpc_socket_factory_bind(socket_factory, sockfd, addr)
+             : bind(sockfd, (struct sockaddr *)addr->addr,
+                    (socklen_t)addr->len);
+}
+
 /* Prepare a recently-created socket for listening. */
-static int prepare_socket(int fd, const grpc_resolved_address *addr) {
+static int prepare_socket(grpc_socket_factory *socket_factory, int fd,
+                          const grpc_resolved_address *addr) {
   grpc_resolved_address sockname_temp;
   struct sockaddr *addr_ptr = (struct sockaddr *)addr->addr;
   /* Set send/receive socket buffers to 1 MB */
@@ -246,7 +276,7 @@ static int prepare_socket(int fd, const grpc_resolved_address *addr) {
   }
 
   GPR_ASSERT(addr->len < ~(socklen_t)0);
-  if (bind(fd, (struct sockaddr *)addr, (socklen_t)addr->len) < 0) {
+  if (bind_socket(socket_factory, fd, addr) < 0) {
     char *addr_str;
     grpc_sockaddr_to_string(&addr_str, addr, 0);
     gpr_log(GPR_ERROR, "bind addr=%s: %s", addr_str, strerror(errno));
@@ -288,7 +318,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
 
   gpr_mu_lock(&sp->server->mu);
   if (error != GRPC_ERROR_NONE) {
-    if (0 == --sp->server->active_ports) {
+    if (0 == --sp->server->active_ports && sp->server->shutdown) {
       gpr_mu_unlock(&sp->server->mu);
       deactivated_all_ports(exec_ctx, sp->server);
     } else {
@@ -311,7 +341,7 @@ static void on_write(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
 
   gpr_mu_lock(&(sp->server->mu));
   if (error != GRPC_ERROR_NONE) {
-    if (0 == --sp->server->active_ports) {
+    if (0 == --sp->server->active_ports && sp->server->shutdown) {
       gpr_mu_unlock(&sp->server->mu);
       deactivated_all_ports(exec_ctx, sp->server);
     } else {
@@ -339,7 +369,7 @@ static int add_socket_to_server(grpc_udp_server *s, int fd,
   char *addr_str;
   char *name;
 
-  port = prepare_socket(fd, addr);
+  port = prepare_socket(s->socket_factory, fd, addr);
   if (port >= 0) {
     grpc_sockaddr_to_string(&addr_str, addr, 1);
     gpr_asprintf(&name, "udp-server-listener:%s", addr_str);
@@ -417,8 +447,8 @@ int grpc_udp_server_add_port(grpc_udp_server *s,
     /* Try listening on IPv6 first. */
     addr = &wild6;
     // TODO(rjshade): Test and propagate the returned grpc_error*:
-    GRPC_ERROR_UNREF(grpc_create_dualstack_socket(addr, SOCK_DGRAM, IPPROTO_UDP,
-                                                  &dsmode, &fd));
+    GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
+        s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
     allocated_port1 =
         add_socket_to_server(s, fd, addr, read_cb, write_cb, orphan_cb);
     if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) {
@@ -433,8 +463,8 @@ int grpc_udp_server_add_port(grpc_udp_server *s,
   }
 
   // TODO(rjshade): Test and propagate the returned grpc_error*:
-  GRPC_ERROR_UNREF(grpc_create_dualstack_socket(addr, SOCK_DGRAM, IPPROTO_UDP,
-                                                &dsmode, &fd));
+  GRPC_ERROR_UNREF(grpc_create_dualstack_socket_using_factory(
+      s->socket_factory, addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode, &fd));
   if (fd < 0) {
     gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno));
   }
diff --git a/src/core/lib/iomgr/udp_server.h b/src/core/lib/iomgr/udp_server.h
index 90842a47f091ab2497d765185d3f7bdd091e37d5..9df3fe4d1f0dcab57c4048459491e2f3350f2394 100644
--- a/src/core/lib/iomgr/udp_server.h
+++ b/src/core/lib/iomgr/udp_server.h
@@ -58,7 +58,7 @@ typedef void (*grpc_udp_server_orphan_cb)(grpc_exec_ctx *exec_ctx,
                                           grpc_fd *emfd, void *user_data);
 
 /* Create a server, initially not bound to any ports */
-grpc_udp_server *grpc_udp_server_create(void);
+grpc_udp_server *grpc_udp_server_create(const grpc_channel_args *args);
 
 /* Start listening to bound ports. user_data is passed to callbacks. */
 void grpc_udp_server_start(grpc_exec_ctx *exec_ctx, grpc_udp_server *udp_server,
diff --git a/src/core/lib/security/credentials/jwt/json_token.c b/src/core/lib/security/credentials/jwt/json_token.c
index 192a5f47edf3fe511bf3d0d471b3508778a0c819..aa905725fcd13788d39de9326f2173e21c29f12f 100644
--- a/src/core/lib/security/credentials/jwt/json_token.c
+++ b/src/core/lib/security/credentials/jwt/json_token.c
@@ -40,8 +40,8 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
-#include "src/core/lib/security/util/b64.h"
 #include "src/core/lib/security/util/json_util.h"
+#include "src/core/lib/slice/b64.h"
 #include "src/core/lib/support/string.h"
 
 #include <openssl/bio.h>
diff --git a/src/core/lib/security/credentials/jwt/jwt_verifier.c b/src/core/lib/security/credentials/jwt/jwt_verifier.c
index 5c59cf0f4ad1fa76a3015e068a1635f2f89b0953..0e2a26437164217935b8c787122dd5434ba2e501 100644
--- a/src/core/lib/security/credentials/jwt/jwt_verifier.c
+++ b/src/core/lib/security/credentials/jwt/jwt_verifier.c
@@ -45,10 +45,10 @@
 
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/iomgr/polling_entity.h"
-#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/tsi/ssl_types.h"
+#include "src/core/tsi/ssl_types.h"
 
 /* --- Utils. --- */
 
diff --git a/src/core/lib/security/transport/secure_endpoint.c b/src/core/lib/security/transport/secure_endpoint.c
index 568d70fa38a63dcf4eb947b6ec1ba4d9bd461373..24da949e4863510c8b48e97f15525bd3a28895e9 100644
--- a/src/core/lib/security/transport/secure_endpoint.c
+++ b/src/core/lib/security/transport/secure_endpoint.c
@@ -49,7 +49,7 @@
 #include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 #define STAGING_BUFFER_SIZE 8192
 
diff --git a/src/core/lib/security/transport/security_connector.c b/src/core/lib/security/transport/security_connector.c
index b0cbc83639c28dda39b9352e624a1130be5eda43..2b517061611809e545d54b8d57d2f75be60b7c89 100644
--- a/src/core/lib/security/transport/security_connector.c
+++ b/src/core/lib/security/transport/security_connector.c
@@ -54,8 +54,8 @@
 #include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/lib/support/env.h"
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/tsi/fake_transport_security.h"
-#include "src/core/lib/tsi/ssl_transport_security.h"
+#include "src/core/tsi/fake_transport_security.h"
+#include "src/core/tsi/ssl_transport_security.h"
 
 /* -- Constants. -- */
 
diff --git a/src/core/lib/security/transport/security_connector.h b/src/core/lib/security/transport/security_connector.h
index 3df2fecd393c84c543b39491fc9c1d94957d526d..cf56cb31830aefb87290b2dc9655677a2387e69d 100644
--- a/src/core/lib/security/transport/security_connector.h
+++ b/src/core/lib/security/transport/security_connector.h
@@ -39,7 +39,7 @@
 #include "src/core/lib/channel/handshaker.h"
 #include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/tcp_server.h"
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 /* --- status enum. --- */
 
diff --git a/src/core/lib/security/transport/tsi_error.h b/src/core/lib/security/transport/tsi_error.h
index 636fbb89cf5d7f9b6a8a9ad0c9fea5de995b144d..b84693b5de2102dcb566c898db638df2d6a0c0d8 100644
--- a/src/core/lib/security/transport/tsi_error.h
+++ b/src/core/lib/security/transport/tsi_error.h
@@ -35,7 +35,7 @@
 #define GRPC_CORE_LIB_SECURITY_TRANSPORT_TSI_ERROR_H
 
 #include "src/core/lib/iomgr/error.h"
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 grpc_error *grpc_set_tsi_error_result(grpc_error *error, tsi_result result);
 
diff --git a/src/core/lib/security/util/b64.c b/src/core/lib/slice/b64.c
similarity index 93%
rename from src/core/lib/security/util/b64.c
rename to src/core/lib/slice/b64.c
index 09c821313162069aaaccaede30609d0d9447e5b6..2007cc4810958daf2ef0bf0b8f2ca7f11a848df3 100644
--- a/src/core/lib/security/util/b64.c
+++ b/src/core/lib/slice/b64.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/b64.h"
 
 #include <stdint.h>
 #include <string.h>
@@ -71,15 +71,31 @@ static const char base64_url_safe_chars[] =
 
 char *grpc_base64_encode(const void *vdata, size_t data_size, int url_safe,
                          int multiline) {
-  const unsigned char *data = vdata;
-  const char *base64_chars =
-      url_safe ? base64_url_safe_chars : base64_url_unsafe_chars;
+  size_t result_projected_size =
+      grpc_base64_estimate_encoded_size(data_size, url_safe, multiline);
+  char *result = gpr_malloc(result_projected_size);
+  grpc_base64_encode_core(result, vdata, data_size, url_safe, multiline);
+  return result;
+}
+
+size_t grpc_base64_estimate_encoded_size(size_t data_size, int url_safe,
+                                         int multiline) {
   size_t result_projected_size =
       4 * ((data_size + 3) / 3) +
       2 * (multiline ? (data_size / (3 * GRPC_BASE64_MULTILINE_NUM_BLOCKS))
                      : 0) +
       1;
-  char *result = gpr_malloc(result_projected_size);
+  return result_projected_size;
+}
+
+void grpc_base64_encode_core(char *result, const void *vdata, size_t data_size,
+                             int url_safe, int multiline) {
+  const unsigned char *data = vdata;
+  const char *base64_chars =
+      url_safe ? base64_url_safe_chars : base64_url_unsafe_chars;
+  const size_t result_projected_size =
+      grpc_base64_estimate_encoded_size(data_size, url_safe, multiline);
+
   char *current = result;
   size_t num_blocks = 0;
   size_t i = 0;
@@ -119,7 +135,6 @@ char *grpc_base64_encode(const void *vdata, size_t data_size, int url_safe,
   GPR_ASSERT(current >= result);
   GPR_ASSERT((uintptr_t)(current - result) < result_projected_size);
   result[current - result] = '\0';
-  return result;
 }
 
 grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
diff --git a/src/core/lib/security/util/b64.h b/src/core/lib/slice/b64.h
similarity index 74%
rename from src/core/lib/security/util/b64.h
rename to src/core/lib/slice/b64.h
index d42a136f61a2a85e4e02b3c316feb6caf3a4ca45..5cc821f4bf350c3fd624b6febcc36fe011204927 100644
--- a/src/core/lib/security/util/b64.h
+++ b/src/core/lib/slice/b64.h
@@ -31,16 +31,28 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_SECURITY_UTIL_B64_H
-#define GRPC_CORE_LIB_SECURITY_UTIL_B64_H
+#ifndef GRPC_CORE_LIB_SLICE_B64_H
+#define GRPC_CORE_LIB_SLICE_B64_H
 
 #include <grpc/slice.h>
 
 /* Encodes data using base64. It is the caller's responsability to free
-   the returned char * using gpr_free. Returns NULL on NULL input. */
+   the returned char * using gpr_free. Returns NULL on NULL input.
+   TODO(makdharma) : change the flags to bool from int */
 char *grpc_base64_encode(const void *data, size_t data_size, int url_safe,
                          int multiline);
 
+/* estimate the upper bound on size of base64 encoded data. The actual size
+ * is guaranteed to be less than or equal to the size returned here. */
+size_t grpc_base64_estimate_encoded_size(size_t data_size, int url_safe,
+                                         int multiline);
+
+/* Encodes data using base64 and write it to memory pointed to by result. It is
+ * the caller's responsiblity to allocate enough memory in |result| to fit the
+ * encoded data. */
+void grpc_base64_encode_core(char *result, const void *vdata, size_t data_size,
+                             int url_safe, int multiline);
+
 /* Decodes data according to the base64 specification. Returns an empty
    slice in case of failure. */
 grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
@@ -50,4 +62,4 @@ grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
 grpc_slice grpc_base64_decode_with_len(grpc_exec_ctx *exec_ctx, const char *b64,
                                        size_t b64_len, int url_safe);
 
-#endif /* GRPC_CORE_LIB_SECURITY_UTIL_B64_H */
+#endif /* GRPC_CORE_LIB_SLICE_B64_H */
diff --git a/src/core/lib/support/time.c b/src/core/lib/support/time.c
index 5a7d043aed8f352fb0b10b6b42cd561a4bc44357..c5f94d46f7bf2268fdbbbdeca2767266e822b2bc 100644
--- a/src/core/lib/support/time.c
+++ b/src/core/lib/support/time.c
@@ -42,7 +42,7 @@
 int gpr_time_cmp(gpr_timespec a, gpr_timespec b) {
   int cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec);
   GPR_ASSERT(a.clock_type == b.clock_type);
-  if (cmp == 0) {
+  if (cmp == 0 && a.tv_sec != INT64_MAX && a.tv_sec != INT64_MIN) {
     cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec);
   }
   return cmp;
@@ -244,15 +244,9 @@ gpr_timespec gpr_convert_clock_type(gpr_timespec t, gpr_clock_type clock_type) {
     return t;
   }
 
-  if (t.tv_nsec == 0) {
-    if (t.tv_sec == INT64_MAX) {
-      t.clock_type = clock_type;
-      return t;
-    }
-    if (t.tv_sec == INT64_MIN) {
-      t.clock_type = clock_type;
-      return t;
-    }
+  if (t.tv_sec == INT64_MAX || t.tv_sec == INT64_MIN) {
+    t.clock_type = clock_type;
+    return t;
   }
 
   if (clock_type == GPR_TIMESPAN) {
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 895a8a3b060b3b93211bb252e03cc7d605a2e8b8..a9317a469405856b7a66528333689f2218da127a 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -504,9 +504,9 @@ void grpc_call_destroy(grpc_call *c) {
       if (c == parent->first_child) {
         parent->first_child = NULL;
       }
-      c->sibling_prev->sibling_next = c->sibling_next;
-      c->sibling_next->sibling_prev = c->sibling_prev;
     }
+    c->sibling_prev->sibling_next = c->sibling_next;
+    c->sibling_next->sibling_prev = c->sibling_prev;
     gpr_mu_unlock(&parent->child_list_mu);
     GRPC_CALL_INTERNAL_UNREF(&exec_ctx, parent, "child");
   }
@@ -625,7 +625,7 @@ static bool get_final_status_from(
     void (*set_value)(grpc_status_code code, void *user_data),
     void *set_value_user_data, grpc_slice *details) {
   grpc_status_code code;
-  grpc_slice slice;
+  grpc_slice slice = grpc_empty_slice();
   grpc_error_get_status(error, call->send_deadline, &code, &slice, NULL);
   if (code == GRPC_STATUS_OK && !allow_ok_status) {
     return false;
diff --git a/src/core/lib/surface/channel.c b/src/core/lib/surface/channel.c
index d6c7aee40d80a20e2247eea68840a909454413e7..b3ba826bbc59efb3928b917981bdb310e5c9427b 100644
--- a/src/core/lib/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -150,17 +150,20 @@ grpc_channel *grpc_channel_create_with_builder(
     } else if (0 == strcmp(args->args[i].key,
                            GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) {
       channel->compression_options.default_level.is_set = true;
-      GPR_ASSERT(args->args[i].value.integer >= 0 &&
-                 args->args[i].value.integer < GRPC_COMPRESS_LEVEL_COUNT);
       channel->compression_options.default_level.level =
-          (grpc_compression_level)args->args[i].value.integer;
+          (grpc_compression_level)grpc_channel_arg_get_integer(
+              &args->args[i],
+              (grpc_integer_options){GRPC_COMPRESS_LEVEL_NONE,
+                                     GRPC_COMPRESS_LEVEL_NONE,
+                                     GRPC_COMPRESS_LEVEL_COUNT - 1});
     } else if (0 == strcmp(args->args[i].key,
                            GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) {
       channel->compression_options.default_algorithm.is_set = true;
-      GPR_ASSERT(args->args[i].value.integer >= 0 &&
-                 args->args[i].value.integer < GRPC_COMPRESS_ALGORITHMS_COUNT);
       channel->compression_options.default_algorithm.algorithm =
-          (grpc_compression_algorithm)args->args[i].value.integer;
+          (grpc_compression_algorithm)grpc_channel_arg_get_integer(
+              &args->args[i],
+              (grpc_integer_options){GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE,
+                                     GRPC_COMPRESS_ALGORITHMS_COUNT - 1});
     } else if (0 ==
                strcmp(args->args[i].key,
                       GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) {
@@ -194,8 +197,14 @@ grpc_channel *grpc_channel_create(grpc_exec_ctx *exec_ctx, const char *target,
 
 size_t grpc_channel_get_call_size_estimate(grpc_channel *channel) {
 #define ROUND_UP_SIZE 256
+  /* We round up our current estimate to the NEXT value of ROUND_UP_SIZE.
+     This ensures:
+      1. a consistent size allocation when our estimate is drifting slowly
+         (which is common) - which tends to help most allocators reuse memory
+      2. a small amount of allowed growth over the estimate without hitting
+         the arena size doubling case, reducing overall memory usage */
   return ((size_t)gpr_atm_no_barrier_load(&channel->call_size_estimate) +
-          ROUND_UP_SIZE) &
+          2 * ROUND_UP_SIZE) &
          ~(size_t)(ROUND_UP_SIZE - 1);
 }
 
diff --git a/src/core/lib/surface/completion_queue_factory.c b/src/core/lib/surface/completion_queue_factory.c
new file mode 100644
index 0000000000000000000000000000000000000000..db67a5192be5904153f8f9cf10cb1d24dd3d06d9
--- /dev/null
+++ b/src/core/lib/surface/completion_queue_factory.c
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/surface/completion_queue_factory.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+#include <grpc/support/log.h>
+
+/* TODO (sreek) - Currently this does not use the attributes arg. This will be
+   added in a future PR */
+static grpc_completion_queue* default_create(
+    const grpc_completion_queue_factory* factory,
+    const grpc_completion_queue_attributes* attributes) {
+  return grpc_completion_queue_create(NULL);
+}
+
+static grpc_completion_queue_factory_vtable default_vtable = {default_create};
+
+static const grpc_completion_queue_factory g_default_cq_factory = {
+    "Default Factory", NULL, &default_vtable};
+
+const grpc_completion_queue_factory* grpc_completion_queue_factory_lookup(
+    const grpc_completion_queue_attributes* attributes) {
+  /* As we add more fields to grpc_completion_queue_attributes, we may have to
+     change this assert to:
+         GPR_ASSERT (attributes->version >= 1 &&
+             attributes->version <= GRPC_CQ_CURRENT_VERSION) */
+  GPR_ASSERT(attributes->version == 1);
+
+  /* The default factory can handle version 1 of the attributes structure. We
+     may have to change this as more fields are added to the structure */
+  return &g_default_cq_factory;
+}
+
+grpc_completion_queue* grpc_completion_queue_create_for_next(void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_completion_queue_attributes attr = {1, GRPC_CQ_NEXT,
+                                           GRPC_CQ_DEFAULT_POLLING};
+  return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr);
+}
+
+grpc_completion_queue* grpc_completion_queue_create_for_pluck(void* reserved) {
+  GPR_ASSERT(!reserved);
+  grpc_completion_queue_attributes attr = {1, GRPC_CQ_PLUCK,
+                                           GRPC_CQ_DEFAULT_POLLING};
+  return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr);
+}
diff --git a/src/core/lib/surface/completion_queue_factory.h b/src/core/lib/surface/completion_queue_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..57e90b509074cdfb7c5f2b8348b2431f9ee852f5
--- /dev/null
+++ b/src/core/lib/surface/completion_queue_factory.h
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2017, 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_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H
+
+#include <grpc/grpc.h>
+#include "src/core/lib/surface/completion_queue.h"
+
+typedef struct grpc_completion_queue_factory_vtable {
+  grpc_completion_queue* (*create)(const grpc_completion_queue_factory*,
+                                   const grpc_completion_queue_attributes*);
+} grpc_completion_queue_factory_vtable;
+
+struct grpc_completion_queue_factory {
+  const char* name;
+  void* data; /* Factory specific data */
+  grpc_completion_queue_factory_vtable* vtable;
+};
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_FACTORY_H */
diff --git a/src/core/lib/surface/init.c b/src/core/lib/surface/init.c
index 91bd014a0e5c6f0a8928466775ae91ef21e616d6..b46ecac18d9cac7d7d2974a83a082e21b260de53 100644
--- a/src/core/lib/surface/init.c
+++ b/src/core/lib/surface/init.c
@@ -47,6 +47,7 @@
 #include "src/core/lib/channel/handshaker_registry.h"
 #include "src/core/lib/channel/http_client_filter.h"
 #include "src/core/lib/channel/http_server_filter.h"
+#include "src/core/lib/channel/max_age_filter.h"
 #include "src/core/lib/channel/message_size_filter.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/http/parser.h"
@@ -113,6 +114,9 @@ static void register_builtin_channel_init() {
   grpc_channel_init_register_stage(
       GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, prepend_filter,
       (void *)&grpc_server_deadline_filter);
+  grpc_channel_init_register_stage(
+      GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, prepend_filter,
+      (void *)&grpc_max_age_filter);
   grpc_channel_init_register_stage(
       GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
       prepend_filter, (void *)&grpc_message_size_filter);
diff --git a/src/core/lib/surface/init_secure.c b/src/core/lib/surface/init_secure.c
index 46b9a8f922c8c14f00c1117a08e32bf7a1cd9c55..921ef87e366c4e046349afb3764fe73631d5c009 100644
--- a/src/core/lib/surface/init_secure.c
+++ b/src/core/lib/surface/init_secure.c
@@ -43,7 +43,7 @@
 #include "src/core/lib/security/transport/security_connector.h"
 #include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/lib/surface/channel_init.h"
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 void grpc_security_pre_init(void) {
   grpc_register_tracer("secure_endpoint", &grpc_trace_secure_endpoint);
diff --git a/src/core/lib/transport/bdp_estimator.h b/src/core/lib/transport/bdp_estimator.h
index bcaf899910d00bdfb298ba21939f510fbc83a41b..df8d1f6fc0f12cff0f45e3b104fc472af901cc1a 100644
--- a/src/core/lib/transport/bdp_estimator.h
+++ b/src/core/lib/transport/bdp_estimator.h
@@ -73,4 +73,4 @@ void grpc_bdp_estimator_start_ping(grpc_bdp_estimator *estimator);
 // Completes a previously started ping
 void grpc_bdp_estimator_complete_ping(grpc_bdp_estimator *estimator);
 
-#endif
+#endif /* GRPC_CORE_LIB_TRANSPORT_BDP_ESTIMATOR_H */
diff --git a/src/core/plugin_registry/grpc_plugin_registry.c b/src/core/plugin_registry/grpc_plugin_registry.c
index 2efd9cd1ad7a76043371a436910b96e9210f4318..596e3b7114fe9274833cfe68547b2a945f07b01e 100644
--- a/src/core/plugin_registry/grpc_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_plugin_registry.c
@@ -43,6 +43,8 @@ extern void grpc_lb_policy_pick_first_init(void);
 extern void grpc_lb_policy_pick_first_shutdown(void);
 extern void grpc_lb_policy_round_robin_init(void);
 extern void grpc_lb_policy_round_robin_shutdown(void);
+extern void grpc_resolver_dns_ares_init(void);
+extern void grpc_resolver_dns_ares_shutdown(void);
 extern void grpc_resolver_dns_native_init(void);
 extern void grpc_resolver_dns_native_shutdown(void);
 extern void grpc_resolver_sockaddr_init(void);
@@ -63,6 +65,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_lb_policy_pick_first_shutdown);
   grpc_register_plugin(grpc_lb_policy_round_robin_init,
                        grpc_lb_policy_round_robin_shutdown);
+  grpc_register_plugin(grpc_resolver_dns_ares_init,
+                       grpc_resolver_dns_ares_shutdown);
   grpc_register_plugin(grpc_resolver_dns_native_init,
                        grpc_resolver_dns_native_shutdown);
   grpc_register_plugin(grpc_resolver_sockaddr_init,
diff --git a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
index 8b18af699dbc1b3fa0e71f10ab0a5751a3b0065b..a05ebcb3af2cb191c381169a8760a5ea163c145c 100644
--- a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
@@ -37,6 +37,8 @@ extern void grpc_chttp2_plugin_init(void);
 extern void grpc_chttp2_plugin_shutdown(void);
 extern void grpc_client_channel_init(void);
 extern void grpc_client_channel_shutdown(void);
+extern void grpc_resolver_dns_ares_init(void);
+extern void grpc_resolver_dns_ares_shutdown(void);
 extern void grpc_resolver_dns_native_init(void);
 extern void grpc_resolver_dns_native_shutdown(void);
 extern void grpc_resolver_sockaddr_init(void);
@@ -57,6 +59,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_chttp2_plugin_shutdown);
   grpc_register_plugin(grpc_client_channel_init,
                        grpc_client_channel_shutdown);
+  grpc_register_plugin(grpc_resolver_dns_ares_init,
+                       grpc_resolver_dns_ares_shutdown);
   grpc_register_plugin(grpc_resolver_dns_native_init,
                        grpc_resolver_dns_native_shutdown);
   grpc_register_plugin(grpc_resolver_sockaddr_init,
diff --git a/src/core/lib/tsi/README.md b/src/core/tsi/README.md
similarity index 100%
rename from src/core/lib/tsi/README.md
rename to src/core/tsi/README.md
diff --git a/src/core/lib/tsi/fake_transport_security.c b/src/core/tsi/fake_transport_security.c
similarity index 99%
rename from src/core/lib/tsi/fake_transport_security.c
rename to src/core/tsi/fake_transport_security.c
index bbe323df3bbdcac2978d64c8e0a7cd538e1f5205..822fad51cb39074785b27b6434600455ed312f64 100644
--- a/src/core/lib/tsi/fake_transport_security.c
+++ b/src/core/tsi/fake_transport_security.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/tsi/fake_transport_security.h"
+#include "src/core/tsi/fake_transport_security.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -40,7 +40,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/useful.h>
-#include "src/core/lib/tsi/transport_security.h"
+#include "src/core/tsi/transport_security.h"
 
 /* --- Constants. ---*/
 #define TSI_FAKE_FRAME_HEADER_SIZE 4
diff --git a/src/core/lib/tsi/fake_transport_security.h b/src/core/tsi/fake_transport_security.h
similarity index 91%
rename from src/core/lib/tsi/fake_transport_security.h
rename to src/core/tsi/fake_transport_security.h
index 54a9469b5841ec779a1413c563f1eaa31eb9f60b..0697c7279f1b211ac975a10056b485a3f7ce9b8d 100644
--- a/src/core/lib/tsi/fake_transport_security.h
+++ b/src/core/tsi/fake_transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H
-#define GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
 
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,4 +58,4 @@ tsi_frame_protector *tsi_create_fake_protector(
 }
 #endif
 
-#endif /* GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H */
diff --git a/src/core/lib/tsi/ssl_transport_security.c b/src/core/tsi/ssl_transport_security.c
similarity index 99%
rename from src/core/lib/tsi/ssl_transport_security.c
rename to src/core/tsi/ssl_transport_security.c
index 53aabdb92679afbc291d8b3d7f50e34fc7b50547..a0325cc1835a3092c3bd0ec3313da28688059b47 100644
--- a/src/core/lib/tsi/ssl_transport_security.c
+++ b/src/core/tsi/ssl_transport_security.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/tsi/ssl_transport_security.h"
+#include "src/core/tsi/ssl_transport_security.h"
 
 #include <grpc/support/port_platform.h>
 
@@ -60,8 +60,8 @@
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 
-#include "src/core/lib/tsi/ssl_types.h"
-#include "src/core/lib/tsi/transport_security.h"
+#include "src/core/tsi/ssl_types.h"
+#include "src/core/tsi/transport_security.h"
 
 /* --- Constants. ---*/
 
diff --git a/src/core/lib/tsi/ssl_transport_security.h b/src/core/tsi/ssl_transport_security.h
similarity index 97%
rename from src/core/lib/tsi/ssl_transport_security.h
rename to src/core/tsi/ssl_transport_security.h
index 7407246118a883e2dfa12386c89d3a38814fc1bd..0a527e9021f18717b250485c8c43caab76e54bdc 100644
--- a/src/core/lib/tsi/ssl_transport_security.h
+++ b/src/core/tsi/ssl_transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H
-#define GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
 
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -188,4 +188,4 @@ int tsi_ssl_peer_matches_name(const tsi_peer *peer, const char *name);
 }
 #endif
 
-#endif /* GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H */
diff --git a/src/core/lib/tsi/ssl_types.h b/src/core/tsi/ssl_types.h
similarity index 94%
rename from src/core/lib/tsi/ssl_types.h
rename to src/core/tsi/ssl_types.h
index 0a988effd0f3a66c4d43b93b74b0d30cd002fe88..065cb868000de7aa9350aa1efbebc1a75702c7fd 100644
--- a/src/core/lib/tsi/ssl_types.h
+++ b/src/core/tsi/ssl_types.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_TSI_SSL_TYPES_H
-#define GRPC_CORE_LIB_TSI_SSL_TYPES_H
+#ifndef GRPC_CORE_TSI_SSL_TYPES_H
+#define GRPC_CORE_TSI_SSL_TYPES_H
 
 /* A collection of macros to cast between various integer types that are
  * used differently between BoringSSL and OpenSSL:
@@ -52,4 +52,4 @@
 #define TSI_SIZE_AS_SIZE(x) ((int)(x))
 #endif
 
-#endif /* GRPC_CORE_LIB_TSI_SSL_TYPES_H */
+#endif /* GRPC_CORE_TSI_SSL_TYPES_H */
diff --git a/src/core/lib/tsi/test_creds/BUILD b/src/core/tsi/test_creds/BUILD
similarity index 100%
rename from src/core/lib/tsi/test_creds/BUILD
rename to src/core/tsi/test_creds/BUILD
diff --git a/src/core/lib/tsi/test_creds/README b/src/core/tsi/test_creds/README
similarity index 100%
rename from src/core/lib/tsi/test_creds/README
rename to src/core/tsi/test_creds/README
diff --git a/src/core/lib/tsi/test_creds/badclient.key b/src/core/tsi/test_creds/badclient.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/badclient.key
rename to src/core/tsi/test_creds/badclient.key
diff --git a/src/core/lib/tsi/test_creds/badclient.pem b/src/core/tsi/test_creds/badclient.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/badclient.pem
rename to src/core/tsi/test_creds/badclient.pem
diff --git a/src/core/lib/tsi/test_creds/badserver.key b/src/core/tsi/test_creds/badserver.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/badserver.key
rename to src/core/tsi/test_creds/badserver.key
diff --git a/src/core/lib/tsi/test_creds/badserver.pem b/src/core/tsi/test_creds/badserver.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/badserver.pem
rename to src/core/tsi/test_creds/badserver.pem
diff --git a/src/core/lib/tsi/test_creds/ca-openssl.cnf b/src/core/tsi/test_creds/ca-openssl.cnf
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca-openssl.cnf
rename to src/core/tsi/test_creds/ca-openssl.cnf
diff --git a/src/core/lib/tsi/test_creds/ca.key b/src/core/tsi/test_creds/ca.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca.key
rename to src/core/tsi/test_creds/ca.key
diff --git a/src/core/lib/tsi/test_creds/ca.pem b/src/core/tsi/test_creds/ca.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/ca.pem
rename to src/core/tsi/test_creds/ca.pem
diff --git a/src/core/lib/tsi/test_creds/client.key b/src/core/tsi/test_creds/client.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/client.key
rename to src/core/tsi/test_creds/client.key
diff --git a/src/core/lib/tsi/test_creds/client.pem b/src/core/tsi/test_creds/client.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/client.pem
rename to src/core/tsi/test_creds/client.pem
diff --git a/src/core/lib/tsi/test_creds/server0.key b/src/core/tsi/test_creds/server0.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/server0.key
rename to src/core/tsi/test_creds/server0.key
diff --git a/src/core/lib/tsi/test_creds/server0.pem b/src/core/tsi/test_creds/server0.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/server0.pem
rename to src/core/tsi/test_creds/server0.pem
diff --git a/src/core/lib/tsi/test_creds/server1-openssl.cnf b/src/core/tsi/test_creds/server1-openssl.cnf
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1-openssl.cnf
rename to src/core/tsi/test_creds/server1-openssl.cnf
diff --git a/src/core/lib/tsi/test_creds/server1.key b/src/core/tsi/test_creds/server1.key
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1.key
rename to src/core/tsi/test_creds/server1.key
diff --git a/src/core/lib/tsi/test_creds/server1.pem b/src/core/tsi/test_creds/server1.pem
similarity index 100%
rename from src/core/lib/tsi/test_creds/server1.pem
rename to src/core/tsi/test_creds/server1.pem
diff --git a/src/core/lib/tsi/transport_security.c b/src/core/tsi/transport_security.c
similarity index 98%
rename from src/core/lib/tsi/transport_security.c
rename to src/core/tsi/transport_security.c
index 2cbf381c88d6bd5fa92d40c5b1158e453e345787..67ebe1b1f30211ee67028e2998dd5c38e298840c 100644
--- a/src/core/lib/tsi/transport_security.c
+++ b/src/core/tsi/transport_security.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/tsi/transport_security.h"
+#include "src/core/tsi/transport_security.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
@@ -101,7 +101,7 @@ tsi_result tsi_frame_protector_protect_flush(
     tsi_frame_protector *self, unsigned char *protected_output_frames,
     size_t *protected_output_frames_size, size_t *still_pending_size) {
   if (self == NULL || protected_output_frames == NULL ||
-      protected_output_frames == NULL || still_pending_size == NULL) {
+      protected_output_frames_size == NULL || still_pending_size == NULL) {
     return TSI_INVALID_ARGUMENT;
   }
   return self->vtable->protect_flush(self, protected_output_frames,
diff --git a/src/core/lib/tsi/transport_security.h b/src/core/tsi/transport_security.h
similarity index 95%
rename from src/core/lib/tsi/transport_security.h
rename to src/core/tsi/transport_security.h
index aaf110ee0537891be32e02f3f615229a2461fb08..491fa1a8bd600db2f557208c14a33e85e4969f85 100644
--- a/src/core/lib/tsi/transport_security.h
+++ b/src/core/tsi/transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H
-#define GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_H
 
-#include "src/core/lib/tsi/transport_security_interface.h"
+#include "src/core/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -108,4 +108,4 @@ char *tsi_strdup(const char *src); /* Sadly, no strdup in C89. */
 }
 #endif
 
-#endif /* GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */
diff --git a/src/core/lib/tsi/transport_security_interface.h b/src/core/tsi/transport_security_interface.h
similarity index 98%
rename from src/core/lib/tsi/transport_security_interface.h
rename to src/core/tsi/transport_security_interface.h
index 3e8c9d7ffefc6a27a5c267951b4dd804b44fd1a4..caed43eac440ceea0ddd6f3b5f0edb60f17422a2 100644
--- a/src/core/lib/tsi/transport_security_interface.h
+++ b/src/core/tsi/transport_security_interface.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H
-#define GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#define GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
 
 #include <stdint.h>
 #include <stdlib.h>
@@ -350,4 +350,4 @@ void tsi_handshaker_destroy(tsi_handshaker *self);
 }
 #endif
 
-#endif /* GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H */
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H */
diff --git a/src/cpp/README.md b/src/cpp/README.md
index d9b521317a6ca18f9b8a7fe5e706a9792b0a97e9..e9ef489a7ca317fed2be1ee9113e7f5bd58ea6d8 100644
--- a/src/cpp/README.md
+++ b/src/cpp/README.md
@@ -1,17 +1,17 @@
 
-#Overview
+# Overview
 
 This directory contains source code for C++ implementation of gRPC.
 
-#Pre-requisites
+# Pre-requisites
 
-##Linux
+## Linux
 
 ```sh
  $ [sudo] apt-get install build-essential autoconf libtool
 ```
 
-##Mac OSX
+## Mac OSX
 
 For a Mac system, git is not available by default. You will first need to
 install Xcode from the Mac AppStore and then run the following command from a
@@ -21,7 +21,7 @@ terminal:
  $ [sudo] xcode-select --install
 ```
 
-##Protoc
+## Protoc
 
 By default gRPC uses [protocol buffers](https://github.com/google/protobuf),
 you will need the `protoc` compiler to generate stub server and client code.
@@ -39,12 +39,12 @@ $ sudo make install   # 'make' should have been run by core grpc
 Alternatively, you can download `protoc` binaries from
 [the protocol buffers Github repository](https://github.com/google/protobuf/releases).
 
-#Installation
+# Installation
 
 Currently to install gRPC for C++, you need to build from source as described
 below.
 
-#Build from Source
+# Build from Source
 
 ```sh
  $ git clone -b $(curl -L http://grpc.io/release) https://github.com/grpc/grpc
@@ -54,7 +54,7 @@ below.
  $ [sudo] make install
 ```
 
-#Documentation
+# Documentation
 
 You can find out how to build and run our simplest gRPC C++ example in our
 [C++ quick start](../../examples/cpp).
diff --git a/src/cpp/client/client_context.cc b/src/cpp/client/client_context.cc
index c073741dac0a7bd23ff5cb824670f69f73fb1e19..3d884cf62e4278380a99409fa74d44c4581b9fd5 100644
--- a/src/cpp/client/client_context.cc
+++ b/src/cpp/client/client_context.cc
@@ -67,7 +67,8 @@ ClientContext::ClientContext()
       call_canceled_(false),
       deadline_(gpr_inf_future(GPR_CLOCK_REALTIME)),
       census_context_(nullptr),
-      propagate_from_call_(nullptr) {
+      propagate_from_call_(nullptr),
+      initial_metadata_corked_(false) {
   g_client_callbacks->DefaultConstructor(this);
 }
 
diff --git a/src/cpp/common/channel_arguments.cc b/src/cpp/common/channel_arguments.cc
index eddcacc33254705c7a73ad54898e49247a2ff000..53e4a9c39c18ad5d39fc9105dda2bd286da89806 100644
--- a/src/cpp/common/channel_arguments.cc
+++ b/src/cpp/common/channel_arguments.cc
@@ -133,14 +133,19 @@ void ChannelArguments::SetUserAgentPrefix(
     return;
   }
   bool replaced = false;
+  auto strings_it = strings_.begin();
   for (auto it = args_.begin(); it != args_.end(); ++it) {
     const grpc_arg& arg = *it;
-    if (arg.type == GRPC_ARG_STRING &&
-        grpc::string(arg.key) == GRPC_ARG_PRIMARY_USER_AGENT_STRING) {
-      strings_.push_back(user_agent_prefix + " " + arg.value.string);
-      it->value.string = const_cast<char*>(strings_.back().c_str());
-      replaced = true;
-      break;
+    ++strings_it;
+    if (arg.type == GRPC_ARG_STRING) {
+      if (grpc::string(arg.key) == GRPC_ARG_PRIMARY_USER_AGENT_STRING) {
+        GPR_ASSERT(arg.value.string == strings_it->c_str());
+        *(strings_it) = user_agent_prefix + " " + arg.value.string;
+        it->value.string = const_cast<char*>(strings_it->c_str());
+        replaced = true;
+        break;
+      }
+      ++strings_it;
     }
   }
   if (!replaced) {
diff --git a/src/cpp/common/channel_filter.h b/src/cpp/common/channel_filter.h
index 494d5d64d7f68c364ddd011cccea46bc1cfef0af..7bdb9b3de9edd19e57af506e44454a16eb5129ea 100644
--- a/src/cpp/common/channel_filter.h
+++ b/src/cpp/common/channel_filter.h
@@ -42,7 +42,6 @@
 #include <vector>
 
 #include "src/core/lib/channel/channel_stack.h"
-#include "src/core/lib/security/context/security_context.h"
 #include "src/core/lib/surface/channel_init.h"
 #include "src/core/lib/transport/metadata_batch.h"
 
@@ -192,16 +191,6 @@ class TransportStreamOp {
     op_->send_message = send_message;
   }
 
-  /// To be called only on clients and servers, respectively.
-  grpc_client_security_context *client_security_context() const {
-    return (grpc_client_security_context *)op_->context[GRPC_CONTEXT_SECURITY]
-        .value;
-  }
-  grpc_server_security_context *server_security_context() const {
-    return (grpc_server_security_context *)op_->context[GRPC_CONTEXT_SECURITY]
-        .value;
-  }
-
   census_context *get_census_context() const {
     return (census_context *)op_->context[GRPC_CONTEXT_TRACING].value;
   }
diff --git a/src/cpp/common/completion_queue_cc.cc b/src/cpp/common/completion_queue_cc.cc
index 0408a4108531b282663788c68349dd99a78d460c..14c51f63c5cd6a5cc434fce4c2690b80d425cce1 100644
--- a/src/cpp/common/completion_queue_cc.cc
+++ b/src/cpp/common/completion_queue_cc.cc
@@ -43,7 +43,12 @@ namespace grpc {
 
 static internal::GrpcLibraryInitializer g_gli_initializer;
 
-CompletionQueue::CompletionQueue(grpc_completion_queue* take) : cq_(take) {
+// 'CompletionQueue' constructor can safely call GrpcLibraryCodegen(false) here
+// i.e not have GrpcLibraryCodegen call grpc_init(). This is because, to create
+// a 'grpc_completion_queue' instance (which is being passed as the input to
+// this constructor), one must have already called grpc_init().
+CompletionQueue::CompletionQueue(grpc_completion_queue* take)
+    : GrpcLibraryCodegen(false), cq_(take) {
   InitialAvalanching();
 }
 
diff --git a/src/cpp/server/server_cc.cc b/src/cpp/server/server_cc.cc
index e874892e73c0a173fb680fb0767a3846e34a2b5c..ce173a1ee2d0542bdceefd5a0cde6985373384d4 100644
--- a/src/cpp/server/server_cc.cc
+++ b/src/cpp/server/server_cc.cc
@@ -489,7 +489,9 @@ void Server::RegisterAsyncGenericService(AsyncGenericService* service) {
 int Server::AddListeningPort(const grpc::string& addr,
                              ServerCredentials* creds) {
   GPR_ASSERT(!started_);
-  return creds->AddPortToServer(addr, server_);
+  int port = creds->AddPortToServer(addr, server_);
+  global_callbacks_->AddPort(this, port);
+  return port;
 }
 
 bool Server::Start(ServerCompletionQueue** cqs, size_t num_cqs) {
diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index 05c05c86953404223dcc28be79f046385bd639ea..3a408eb23ed13a18d99a47d659a9d75ed50ec77d 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -42,6 +42,7 @@
 #include <grpc++/support/time.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
+#include <grpc/load_reporting.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
diff --git a/src/csharp/Grpc.Core/ChannelOptions.cs b/src/csharp/Grpc.Core/ChannelOptions.cs
index b6eeceabc4c2131091dd7826cd0552bc94a3baeb..46a2c6695f6ee1a3cc4d81c3b57c93efb7a08584 100644
--- a/src/csharp/Grpc.Core/ChannelOptions.cs
+++ b/src/csharp/Grpc.Core/ChannelOptions.cs
@@ -151,7 +151,14 @@ namespace Grpc.Core
         public const string MaxConcurrentStreams = "grpc.max_concurrent_streams";
 
         /// <summary>Maximum message length that the channel can receive</summary>
-        public const string MaxMessageLength = "grpc.max_message_length";
+        public const string MaxReceiveMessageLength = "grpc.max_receive_message_length";
+
+        /// <summary>Maximum message length that the channel can send</summary>
+        public const string MaxSendMessageLength = "grpc.max_send_message_length";
+
+        /// <summary>Obsolete, for backward compatibility only.</summary>
+        [Obsolete("Use MaxReceiveMessageLength instead.")]
+        public const string MaxMessageLength = MaxReceiveMessageLength;
 
         /// <summary>Initial sequence number for http2 transports</summary>
         public const string Http2InitialSequenceNumber = "grpc.http2.initial_sequence_number";
diff --git a/src/csharp/Grpc.Examples/MathGrpc.cs b/src/csharp/Grpc.Examples/MathGrpc.cs
index 3364b8ce8ecabcfb0d8404a5011f45d283f363a5..1f2e67d916dae166a9b22d162fd7eb60970b7f7b 100644
--- a/src/csharp/Grpc.Examples/MathGrpc.cs
+++ b/src/csharp/Grpc.Examples/MathGrpc.cs
@@ -35,41 +35,41 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Math {
   public static partial class Math
   {
     static readonly string __ServiceName = "math.Math";
 
-    static readonly Marshaller<global::Math.DivArgs> __Marshaller_DivArgs = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.DivArgs.Parser.ParseFrom);
-    static readonly Marshaller<global::Math.DivReply> __Marshaller_DivReply = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.DivReply.Parser.ParseFrom);
-    static readonly Marshaller<global::Math.FibArgs> __Marshaller_FibArgs = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.FibArgs.Parser.ParseFrom);
-    static readonly Marshaller<global::Math.Num> __Marshaller_Num = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.Num.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Math.DivArgs> __Marshaller_DivArgs = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.DivArgs.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Math.DivReply> __Marshaller_DivReply = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.DivReply.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Math.FibArgs> __Marshaller_FibArgs = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.FibArgs.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Math.Num> __Marshaller_Num = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Math.Num.Parser.ParseFrom);
 
-    static readonly Method<global::Math.DivArgs, global::Math.DivReply> __Method_Div = new Method<global::Math.DivArgs, global::Math.DivReply>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Math.DivArgs, global::Math.DivReply> __Method_Div = new grpc::Method<global::Math.DivArgs, global::Math.DivReply>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "Div",
         __Marshaller_DivArgs,
         __Marshaller_DivReply);
 
-    static readonly Method<global::Math.DivArgs, global::Math.DivReply> __Method_DivMany = new Method<global::Math.DivArgs, global::Math.DivReply>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Math.DivArgs, global::Math.DivReply> __Method_DivMany = new grpc::Method<global::Math.DivArgs, global::Math.DivReply>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "DivMany",
         __Marshaller_DivArgs,
         __Marshaller_DivReply);
 
-    static readonly Method<global::Math.FibArgs, global::Math.Num> __Method_Fib = new Method<global::Math.FibArgs, global::Math.Num>(
-        MethodType.ServerStreaming,
+    static readonly grpc::Method<global::Math.FibArgs, global::Math.Num> __Method_Fib = new grpc::Method<global::Math.FibArgs, global::Math.Num>(
+        grpc::MethodType.ServerStreaming,
         __ServiceName,
         "Fib",
         __Marshaller_FibArgs,
         __Marshaller_Num);
 
-    static readonly Method<global::Math.Num, global::Math.Num> __Method_Sum = new Method<global::Math.Num, global::Math.Num>(
-        MethodType.ClientStreaming,
+    static readonly grpc::Method<global::Math.Num, global::Math.Num> __Method_Sum = new grpc::Method<global::Math.Num, global::Math.Num>(
+        grpc::MethodType.ClientStreaming,
         __ServiceName,
         "Sum",
         __Marshaller_Num,
@@ -91,9 +91,9 @@ namespace Math {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Math.DivReply> Div(global::Math.DivArgs request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Math.DivReply> Div(global::Math.DivArgs request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -106,9 +106,9 @@ namespace Math {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task DivMany(IAsyncStreamReader<global::Math.DivArgs> requestStream, IServerStreamWriter<global::Math.DivReply> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task DivMany(grpc::IAsyncStreamReader<global::Math.DivArgs> requestStream, grpc::IServerStreamWriter<global::Math.DivReply> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -120,9 +120,9 @@ namespace Math {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task Fib(global::Math.FibArgs request, IServerStreamWriter<global::Math.Num> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task Fib(global::Math.FibArgs request, grpc::IServerStreamWriter<global::Math.Num> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -132,24 +132,24 @@ namespace Math {
       /// <param name="requestStream">Used for reading requests from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Math.Num> Sum(IAsyncStreamReader<global::Math.Num> requestStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Math.Num> Sum(grpc::IAsyncStreamReader<global::Math.Num> requestStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for Math</summary>
-    public partial class MathClient : ClientBase<MathClient>
+    public partial class MathClient : grpc::ClientBase<MathClient>
     {
       /// <summary>Creates a new client for Math</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public MathClient(Channel channel) : base(channel)
+      public MathClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for Math that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public MathClient(CallInvoker callInvoker) : base(callInvoker)
+      public MathClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -171,9 +171,9 @@ namespace Math {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Math.DivReply Div(global::Math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Math.DivReply Div(global::Math.DivArgs request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Div(request, new CallOptions(headers, deadline, cancellationToken));
+        return Div(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
@@ -182,7 +182,7 @@ namespace Math {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Math.DivReply Div(global::Math.DivArgs request, CallOptions options)
+      public virtual global::Math.DivReply Div(global::Math.DivArgs request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_Div, null, options, request);
       }
@@ -195,9 +195,9 @@ namespace Math {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return DivAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return DivAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Div divides DivArgs.dividend by DivArgs.divisor and returns the quotient
@@ -206,7 +206,7 @@ namespace Math {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Math.DivReply> DivAsync(global::Math.DivArgs request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_Div, null, options, request);
       }
@@ -220,9 +220,9 @@ namespace Math {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return DivMany(new CallOptions(headers, deadline, cancellationToken));
+        return DivMany(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// DivMany accepts an arbitrary number of division args from the client stream
@@ -232,7 +232,7 @@ namespace Math {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Math.DivArgs, global::Math.DivReply> DivMany(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_DivMany, null, options);
       }
@@ -246,9 +246,9 @@ namespace Math {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Fib(request, new CallOptions(headers, deadline, cancellationToken));
+        return Fib(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Fib generates numbers in the Fibonacci sequence.  If FibArgs.limit > 0, Fib
@@ -258,7 +258,7 @@ namespace Math {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, CallOptions options)
+      public virtual grpc::AsyncServerStreamingCall<global::Math.Num> Fib(global::Math.FibArgs request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_Fib, null, options, request);
       }
@@ -270,9 +270,9 @@ namespace Math {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Sum(new CallOptions(headers, deadline, cancellationToken));
+        return Sum(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Sum sums a stream of numbers, returning the final result once the stream
@@ -280,7 +280,7 @@ namespace Math {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(CallOptions options)
+      public virtual grpc::AsyncClientStreamingCall<global::Math.Num, global::Math.Num> Sum(grpc::CallOptions options)
       {
         return CallInvoker.AsyncClientStreamingCall(__Method_Sum, null, options);
       }
@@ -293,9 +293,9 @@ namespace Math {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(MathBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(MathBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_Div, serviceImpl.Div)
           .AddMethod(__Method_DivMany, serviceImpl.DivMany)
           .AddMethod(__Method_Fib, serviceImpl.Fib)
diff --git a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
index 020c2df5657361428a974e9cb89578010078f39c..d3115f3da1615d482acce149952000e77742bdf8 100644
--- a/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
+++ b/src/csharp/Grpc.HealthCheck/HealthGrpc.cs
@@ -35,18 +35,18 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Grpc.Health.V1 {
   public static partial class Health
   {
     static readonly string __ServiceName = "grpc.health.v1.Health";
 
-    static readonly Marshaller<global::Grpc.Health.V1.HealthCheckRequest> __Marshaller_HealthCheckRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Health.V1.HealthCheckResponse> __Marshaller_HealthCheckResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Health.V1.HealthCheckRequest> __Marshaller_HealthCheckRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Health.V1.HealthCheckResponse> __Marshaller_HealthCheckResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Health.V1.HealthCheckResponse.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse> __Method_Check = new Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse> __Method_Check = new grpc::Method<global::Grpc.Health.V1.HealthCheckRequest, global::Grpc.Health.V1.HealthCheckResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "Check",
         __Marshaller_HealthCheckRequest,
@@ -61,24 +61,24 @@ namespace Grpc.Health.V1 {
     /// <summary>Base class for server-side implementations of Health</summary>
     public abstract partial class HealthBase
     {
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Health.V1.HealthCheckResponse> Check(global::Grpc.Health.V1.HealthCheckRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for Health</summary>
-    public partial class HealthClient : ClientBase<HealthClient>
+    public partial class HealthClient : grpc::ClientBase<HealthClient>
     {
       /// <summary>Creates a new client for Health</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public HealthClient(Channel channel) : base(channel)
+      public HealthClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for Health that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public HealthClient(CallInvoker callInvoker) : base(callInvoker)
+      public HealthClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -91,19 +91,19 @@ namespace Grpc.Health.V1 {
       {
       }
 
-      public virtual global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Check(request, new CallOptions(headers, deadline, cancellationToken));
+        return Check(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options)
+      public virtual global::Grpc.Health.V1.HealthCheckResponse Check(global::Grpc.Health.V1.HealthCheckRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_Check, null, options, request);
       }
-      public virtual AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return CheckAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return CheckAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Health.V1.HealthCheckResponse> CheckAsync(global::Grpc.Health.V1.HealthCheckRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_Check, null, options, request);
       }
@@ -116,9 +116,9 @@ namespace Grpc.Health.V1 {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(HealthBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(HealthBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_Check, serviceImpl.Check).Build();
     }
 
diff --git a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
index 8b58622d5308860167c8dbc06709918e7ae84df6..c80ffa8cf6793cd5180162d8405bc553281b4634 100644
--- a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
@@ -41,26 +41,26 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Grpc.Testing {
   public static partial class MetricsService
   {
     static readonly string __ServiceName = "grpc.testing.MetricsService";
 
-    static readonly Marshaller<global::Grpc.Testing.EmptyMessage> __Marshaller_EmptyMessage = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.EmptyMessage.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.GaugeResponse> __Marshaller_GaugeResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.GaugeResponse.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.GaugeRequest> __Marshaller_GaugeRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.GaugeRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.EmptyMessage> __Marshaller_EmptyMessage = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.EmptyMessage.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.GaugeResponse> __Marshaller_GaugeResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.GaugeResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.GaugeRequest> __Marshaller_GaugeRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.GaugeRequest.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.EmptyMessage, global::Grpc.Testing.GaugeResponse> __Method_GetAllGauges = new Method<global::Grpc.Testing.EmptyMessage, global::Grpc.Testing.GaugeResponse>(
-        MethodType.ServerStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.EmptyMessage, global::Grpc.Testing.GaugeResponse> __Method_GetAllGauges = new grpc::Method<global::Grpc.Testing.EmptyMessage, global::Grpc.Testing.GaugeResponse>(
+        grpc::MethodType.ServerStreaming,
         __ServiceName,
         "GetAllGauges",
         __Marshaller_EmptyMessage,
         __Marshaller_GaugeResponse);
 
-    static readonly Method<global::Grpc.Testing.GaugeRequest, global::Grpc.Testing.GaugeResponse> __Method_GetGauge = new Method<global::Grpc.Testing.GaugeRequest, global::Grpc.Testing.GaugeResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.GaugeRequest, global::Grpc.Testing.GaugeResponse> __Method_GetGauge = new grpc::Method<global::Grpc.Testing.GaugeRequest, global::Grpc.Testing.GaugeResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "GetGauge",
         __Marshaller_GaugeRequest,
@@ -83,9 +83,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, grpc::IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -94,24 +94,24 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for MetricsService</summary>
-    public partial class MetricsServiceClient : ClientBase<MetricsServiceClient>
+    public partial class MetricsServiceClient : grpc::ClientBase<MetricsServiceClient>
     {
       /// <summary>Creates a new client for MetricsService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public MetricsServiceClient(Channel channel) : base(channel)
+      public MetricsServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for MetricsService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public MetricsServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public MetricsServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -133,9 +133,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return GetAllGauges(request, new CallOptions(headers, deadline, cancellationToken));
+        return GetAllGauges(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Returns the values of all the gauges that are currently being maintained by
@@ -144,7 +144,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, CallOptions options)
+      public virtual grpc::AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_GetAllGauges, null, options, request);
       }
@@ -156,9 +156,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return GetGauge(request, new CallOptions(headers, deadline, cancellationToken));
+        return GetGauge(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Returns the value of one gauge
@@ -166,7 +166,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, CallOptions options)
+      public virtual global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_GetGauge, null, options, request);
       }
@@ -178,9 +178,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return GetGaugeAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return GetGaugeAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Returns the value of one gauge
@@ -188,7 +188,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_GetGauge, null, options, request);
       }
@@ -201,9 +201,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(MetricsServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(MetricsServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_GetAllGauges, serviceImpl.GetAllGauges)
           .AddMethod(__Method_GetGauge, serviceImpl.GetGauge).Build();
     }
diff --git a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
index 5135d9ab66d18aa4abf151f9a493cba7258037f1..bb95c8a549f11a3fdd8c45b29e76d43a45695d0b 100644
--- a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
@@ -37,25 +37,25 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Grpc.Testing {
   public static partial class BenchmarkService
   {
     static readonly string __ServiceName = "grpc.testing.BenchmarkService";
 
-    static readonly Marshaller<global::Grpc.Testing.SimpleRequest> __Marshaller_SimpleRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.SimpleResponse> __Marshaller_SimpleResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.SimpleRequest> __Marshaller_SimpleRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.SimpleResponse> __Marshaller_SimpleResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleResponse.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_UnaryCall = new Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_UnaryCall = new grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "UnaryCall",
         __Marshaller_SimpleRequest,
         __Marshaller_SimpleResponse);
 
-    static readonly Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_StreamingCall = new Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_StreamingCall = new grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "StreamingCall",
         __Marshaller_SimpleRequest,
@@ -77,9 +77,9 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -90,24 +90,24 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task StreamingCall(grpc::IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, grpc::IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for BenchmarkService</summary>
-    public partial class BenchmarkServiceClient : ClientBase<BenchmarkServiceClient>
+    public partial class BenchmarkServiceClient : grpc::ClientBase<BenchmarkServiceClient>
     {
       /// <summary>Creates a new client for BenchmarkService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public BenchmarkServiceClient(Channel channel) : base(channel)
+      public BenchmarkServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for BenchmarkService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public BenchmarkServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public BenchmarkServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -129,9 +129,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnaryCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response.
@@ -140,7 +140,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnaryCall, null, options, request);
       }
@@ -153,9 +153,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnaryCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response.
@@ -164,7 +164,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnaryCall, null, options, request);
       }
@@ -176,9 +176,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return StreamingCall(new CallOptions(headers, deadline, cancellationToken));
+        return StreamingCall(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response.
@@ -186,7 +186,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_StreamingCall, null, options);
       }
@@ -199,9 +199,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(BenchmarkServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(BenchmarkServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_UnaryCall, serviceImpl.UnaryCall)
           .AddMethod(__Method_StreamingCall, serviceImpl.StreamingCall).Build();
     }
@@ -211,37 +211,37 @@ namespace Grpc.Testing {
   {
     static readonly string __ServiceName = "grpc.testing.WorkerService";
 
-    static readonly Marshaller<global::Grpc.Testing.ServerArgs> __Marshaller_ServerArgs = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ServerArgs.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.ServerStatus> __Marshaller_ServerStatus = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ServerStatus.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.ClientArgs> __Marshaller_ClientArgs = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ClientArgs.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.ClientStatus> __Marshaller_ClientStatus = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ClientStatus.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.CoreRequest> __Marshaller_CoreRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.CoreRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.CoreResponse> __Marshaller_CoreResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.CoreResponse.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.Void> __Marshaller_Void = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Void.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ServerArgs> __Marshaller_ServerArgs = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ServerArgs.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ServerStatus> __Marshaller_ServerStatus = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ServerStatus.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ClientArgs> __Marshaller_ClientArgs = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ClientArgs.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ClientStatus> __Marshaller_ClientStatus = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ClientStatus.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.CoreRequest> __Marshaller_CoreRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.CoreRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.CoreResponse> __Marshaller_CoreResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.CoreResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.Void> __Marshaller_Void = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Void.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> __Method_RunServer = new Method<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> __Method_RunServer = new grpc::Method<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "RunServer",
         __Marshaller_ServerArgs,
         __Marshaller_ServerStatus);
 
-    static readonly Method<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> __Method_RunClient = new Method<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> __Method_RunClient = new grpc::Method<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "RunClient",
         __Marshaller_ClientArgs,
         __Marshaller_ClientStatus);
 
-    static readonly Method<global::Grpc.Testing.CoreRequest, global::Grpc.Testing.CoreResponse> __Method_CoreCount = new Method<global::Grpc.Testing.CoreRequest, global::Grpc.Testing.CoreResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.CoreRequest, global::Grpc.Testing.CoreResponse> __Method_CoreCount = new grpc::Method<global::Grpc.Testing.CoreRequest, global::Grpc.Testing.CoreResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "CoreCount",
         __Marshaller_CoreRequest,
         __Marshaller_CoreResponse);
 
-    static readonly Method<global::Grpc.Testing.Void, global::Grpc.Testing.Void> __Method_QuitWorker = new Method<global::Grpc.Testing.Void, global::Grpc.Testing.Void>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.Void, global::Grpc.Testing.Void> __Method_QuitWorker = new grpc::Method<global::Grpc.Testing.Void, global::Grpc.Testing.Void>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "QuitWorker",
         __Marshaller_Void,
@@ -268,9 +268,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task RunServer(grpc::IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, grpc::IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -285,9 +285,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task RunClient(grpc::IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, grpc::IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -296,9 +296,9 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -307,24 +307,24 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for WorkerService</summary>
-    public partial class WorkerServiceClient : ClientBase<WorkerServiceClient>
+    public partial class WorkerServiceClient : grpc::ClientBase<WorkerServiceClient>
     {
       /// <summary>Creates a new client for WorkerService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public WorkerServiceClient(Channel channel) : base(channel)
+      public WorkerServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for WorkerService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public WorkerServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public WorkerServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -349,9 +349,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return RunServer(new CallOptions(headers, deadline, cancellationToken));
+        return RunServer(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Start server with specified workload.
@@ -363,7 +363,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_RunServer, null, options);
       }
@@ -379,9 +379,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return RunClient(new CallOptions(headers, deadline, cancellationToken));
+        return RunClient(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Start client with specified workload.
@@ -393,7 +393,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_RunClient, null, options);
       }
@@ -405,9 +405,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return CoreCount(request, new CallOptions(headers, deadline, cancellationToken));
+        return CoreCount(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Just return the core count - unary call
@@ -415,7 +415,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, CallOptions options)
+      public virtual global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_CoreCount, null, options, request);
       }
@@ -427,9 +427,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return CoreCountAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return CoreCountAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Just return the core count - unary call
@@ -437,7 +437,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_CoreCount, null, options, request);
       }
@@ -449,9 +449,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return QuitWorker(request, new CallOptions(headers, deadline, cancellationToken));
+        return QuitWorker(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Quit this worker
@@ -459,7 +459,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, CallOptions options)
+      public virtual global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_QuitWorker, null, options, request);
       }
@@ -471,9 +471,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return QuitWorkerAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return QuitWorkerAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// Quit this worker
@@ -481,7 +481,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_QuitWorker, null, options, request);
       }
@@ -494,9 +494,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(WorkerServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(WorkerServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_RunServer, serviceImpl.RunServer)
           .AddMethod(__Method_RunClient, serviceImpl.RunClient)
           .AddMethod(__Method_CoreCount, serviceImpl.CoreCount)
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index 0265f8e821ebe93fb62351562b26b21eaa55919d..77f76ebbe9cb89acaa10637c7fbac2dbd0f5c3a8 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -38,7 +38,7 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Grpc.Testing {
   /// <summary>
@@ -49,65 +49,65 @@ namespace Grpc.Testing {
   {
     static readonly string __ServiceName = "grpc.testing.TestService";
 
-    static readonly Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.SimpleRequest> __Marshaller_SimpleRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.SimpleResponse> __Marshaller_SimpleResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleResponse.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.StreamingOutputCallRequest> __Marshaller_StreamingOutputCallRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingOutputCallRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.StreamingOutputCallResponse> __Marshaller_StreamingOutputCallResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingOutputCallResponse.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.StreamingInputCallRequest> __Marshaller_StreamingInputCallRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingInputCallRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.StreamingInputCallResponse> __Marshaller_StreamingInputCallResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingInputCallResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.SimpleRequest> __Marshaller_SimpleRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.SimpleResponse> __Marshaller_SimpleResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.SimpleResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.StreamingOutputCallRequest> __Marshaller_StreamingOutputCallRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingOutputCallRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.StreamingOutputCallResponse> __Marshaller_StreamingOutputCallResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingOutputCallResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.StreamingInputCallRequest> __Marshaller_StreamingInputCallRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingInputCallRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.StreamingInputCallResponse> __Marshaller_StreamingInputCallResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.StreamingInputCallResponse.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_EmptyCall = new Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_EmptyCall = new grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "EmptyCall",
         __Marshaller_Empty,
         __Marshaller_Empty);
 
-    static readonly Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_UnaryCall = new Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_UnaryCall = new grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "UnaryCall",
         __Marshaller_SimpleRequest,
         __Marshaller_SimpleResponse);
 
-    static readonly Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_CacheableUnaryCall = new Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> __Method_CacheableUnaryCall = new grpc::Method<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "CacheableUnaryCall",
         __Marshaller_SimpleRequest,
         __Marshaller_SimpleResponse);
 
-    static readonly Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_StreamingOutputCall = new Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
-        MethodType.ServerStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_StreamingOutputCall = new grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
+        grpc::MethodType.ServerStreaming,
         __ServiceName,
         "StreamingOutputCall",
         __Marshaller_StreamingOutputCallRequest,
         __Marshaller_StreamingOutputCallResponse);
 
-    static readonly Method<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> __Method_StreamingInputCall = new Method<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse>(
-        MethodType.ClientStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> __Method_StreamingInputCall = new grpc::Method<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse>(
+        grpc::MethodType.ClientStreaming,
         __ServiceName,
         "StreamingInputCall",
         __Marshaller_StreamingInputCallRequest,
         __Marshaller_StreamingInputCallResponse);
 
-    static readonly Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_FullDuplexCall = new Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_FullDuplexCall = new grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "FullDuplexCall",
         __Marshaller_StreamingOutputCallRequest,
         __Marshaller_StreamingOutputCallResponse);
 
-    static readonly Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_HalfDuplexCall = new Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> __Method_HalfDuplexCall = new grpc::Method<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "HalfDuplexCall",
         __Marshaller_StreamingOutputCallRequest,
         __Marshaller_StreamingOutputCallResponse);
 
-    static readonly Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_UnimplementedCall = new Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_UnimplementedCall = new grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "UnimplementedCall",
         __Marshaller_Empty,
@@ -128,9 +128,9 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -139,9 +139,9 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -152,9 +152,9 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -165,9 +165,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, grpc::IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -177,9 +177,9 @@ namespace Grpc.Testing {
       /// <param name="requestStream">Used for reading requests from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(grpc::IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -191,9 +191,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task FullDuplexCall(grpc::IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, grpc::IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -206,9 +206,9 @@ namespace Grpc.Testing {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task HalfDuplexCall(grpc::IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, grpc::IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
       /// <summary>
@@ -218,24 +218,24 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for TestService</summary>
-    public partial class TestServiceClient : ClientBase<TestServiceClient>
+    public partial class TestServiceClient : grpc::ClientBase<TestServiceClient>
     {
       /// <summary>Creates a new client for TestService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public TestServiceClient(Channel channel) : base(channel)
+      public TestServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for TestService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public TestServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public TestServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -256,9 +256,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return EmptyCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return EmptyCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One empty request followed by one empty response.
@@ -266,7 +266,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_EmptyCall, null, options, request);
       }
@@ -278,9 +278,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return EmptyCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return EmptyCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One empty request followed by one empty response.
@@ -288,7 +288,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_EmptyCall, null, options, request);
       }
@@ -300,9 +300,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnaryCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response.
@@ -310,7 +310,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnaryCall, null, options, request);
       }
@@ -322,9 +322,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnaryCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response.
@@ -332,7 +332,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnaryCall, null, options, request);
       }
@@ -346,9 +346,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return CacheableUnaryCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return CacheableUnaryCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response. Response has cache control
@@ -358,7 +358,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual global::Grpc.Testing.SimpleResponse CacheableUnaryCall(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_CacheableUnaryCall, null, options, request);
       }
@@ -372,9 +372,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return CacheableUnaryCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return CacheableUnaryCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by one response. Response has cache control
@@ -384,7 +384,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> CacheableUnaryCallAsync(global::Grpc.Testing.SimpleRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_CacheableUnaryCall, null, options, request);
       }
@@ -397,9 +397,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return StreamingOutputCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return StreamingOutputCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// One request followed by a sequence of responses (streamed download).
@@ -408,7 +408,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, CallOptions options)
+      public virtual grpc::AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncServerStreamingCall(__Method_StreamingOutputCall, null, options, request);
       }
@@ -420,9 +420,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return StreamingInputCall(new CallOptions(headers, deadline, cancellationToken));
+        return StreamingInputCall(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// A sequence of requests followed by one response (streamed upload).
@@ -430,7 +430,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(CallOptions options)
+      public virtual grpc::AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(grpc::CallOptions options)
       {
         return CallInvoker.AsyncClientStreamingCall(__Method_StreamingInputCall, null, options);
       }
@@ -443,9 +443,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return FullDuplexCall(new CallOptions(headers, deadline, cancellationToken));
+        return FullDuplexCall(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// A sequence of requests with each request served by the server immediately.
@@ -454,7 +454,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_FullDuplexCall, null, options);
       }
@@ -468,9 +468,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return HalfDuplexCall(new CallOptions(headers, deadline, cancellationToken));
+        return HalfDuplexCall(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// A sequence of requests followed by a sequence of responses.
@@ -480,7 +480,7 @@ namespace Grpc.Testing {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_HalfDuplexCall, null, options);
       }
@@ -493,9 +493,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnimplementedCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnimplementedCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// The test server will not implement this method. It will be used
@@ -504,7 +504,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
@@ -517,9 +517,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnimplementedCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnimplementedCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// The test server will not implement this method. It will be used
@@ -528,7 +528,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
@@ -541,9 +541,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(TestServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(TestServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_EmptyCall, serviceImpl.EmptyCall)
           .AddMethod(__Method_UnaryCall, serviceImpl.UnaryCall)
           .AddMethod(__Method_CacheableUnaryCall, serviceImpl.CacheableUnaryCall)
@@ -563,10 +563,10 @@ namespace Grpc.Testing {
   {
     static readonly string __ServiceName = "grpc.testing.UnimplementedService";
 
-    static readonly Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_UnimplementedCall = new Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty> __Method_UnimplementedCall = new grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.Empty>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "UnimplementedCall",
         __Marshaller_Empty,
@@ -587,24 +587,24 @@ namespace Grpc.Testing {
       /// <param name="request">The request received from the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>The response to send back to the client (wrapped by a task).</returns>
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for UnimplementedService</summary>
-    public partial class UnimplementedServiceClient : ClientBase<UnimplementedServiceClient>
+    public partial class UnimplementedServiceClient : grpc::ClientBase<UnimplementedServiceClient>
     {
       /// <summary>Creates a new client for UnimplementedService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public UnimplementedServiceClient(Channel channel) : base(channel)
+      public UnimplementedServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for UnimplementedService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public UnimplementedServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public UnimplementedServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -625,9 +625,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnimplementedCall(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnimplementedCall(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// A call that no server should implement
@@ -635,7 +635,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The response received from the server.</returns>
-      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
@@ -647,9 +647,9 @@ namespace Grpc.Testing {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return UnimplementedCallAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return UnimplementedCallAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// A call that no server should implement
@@ -657,7 +657,7 @@ namespace Grpc.Testing {
       /// <param name="request">The request to send to the server.</param>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_UnimplementedCall, null, options, request);
       }
@@ -670,9 +670,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(UnimplementedServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(UnimplementedServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_UnimplementedCall, serviceImpl.UnimplementedCall).Build();
     }
 
@@ -684,19 +684,19 @@ namespace Grpc.Testing {
   {
     static readonly string __ServiceName = "grpc.testing.ReconnectService";
 
-    static readonly Marshaller<global::Grpc.Testing.ReconnectParams> __Marshaller_ReconnectParams = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ReconnectParams.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Testing.ReconnectInfo> __Marshaller_ReconnectInfo = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ReconnectInfo.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ReconnectParams> __Marshaller_ReconnectParams = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ReconnectParams.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.Empty> __Marshaller_Empty = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.Empty.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Testing.ReconnectInfo> __Marshaller_ReconnectInfo = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Testing.ReconnectInfo.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Testing.ReconnectParams, global::Grpc.Testing.Empty> __Method_Start = new Method<global::Grpc.Testing.ReconnectParams, global::Grpc.Testing.Empty>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.ReconnectParams, global::Grpc.Testing.Empty> __Method_Start = new grpc::Method<global::Grpc.Testing.ReconnectParams, global::Grpc.Testing.Empty>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "Start",
         __Marshaller_ReconnectParams,
         __Marshaller_Empty);
 
-    static readonly Method<global::Grpc.Testing.Empty, global::Grpc.Testing.ReconnectInfo> __Method_Stop = new Method<global::Grpc.Testing.Empty, global::Grpc.Testing.ReconnectInfo>(
-        MethodType.Unary,
+    static readonly grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.ReconnectInfo> __Method_Stop = new grpc::Method<global::Grpc.Testing.Empty, global::Grpc.Testing.ReconnectInfo>(
+        grpc::MethodType.Unary,
         __ServiceName,
         "Stop",
         __Marshaller_Empty,
@@ -711,29 +711,29 @@ namespace Grpc.Testing {
     /// <summary>Base class for server-side implementations of ReconnectService</summary>
     public abstract partial class ReconnectServiceBase
     {
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
-      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for ReconnectService</summary>
-    public partial class ReconnectServiceClient : ClientBase<ReconnectServiceClient>
+    public partial class ReconnectServiceClient : grpc::ClientBase<ReconnectServiceClient>
     {
       /// <summary>Creates a new client for ReconnectService</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public ReconnectServiceClient(Channel channel) : base(channel)
+      public ReconnectServiceClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for ReconnectService that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public ReconnectServiceClient(CallInvoker callInvoker) : base(callInvoker)
+      public ReconnectServiceClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -746,35 +746,35 @@ namespace Grpc.Testing {
       {
       }
 
-      public virtual global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Start(request, new CallOptions(headers, deadline, cancellationToken));
+        return Start(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, CallOptions options)
+      public virtual global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_Start, null, options, request);
       }
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return StartAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return StartAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_Start, null, options, request);
       }
-      public virtual global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return Stop(request, new CallOptions(headers, deadline, cancellationToken));
+        return Stop(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.BlockingUnaryCall(__Method_Stop, null, options, request);
       }
-      public virtual AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return StopAsync(request, new CallOptions(headers, deadline, cancellationToken));
+        return StopAsync(request, new grpc::CallOptions(headers, deadline, cancellationToken));
       }
-      public virtual AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, CallOptions options)
+      public virtual grpc::AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, grpc::CallOptions options)
       {
         return CallInvoker.AsyncUnaryCall(__Method_Stop, null, options, request);
       }
@@ -787,9 +787,9 @@ namespace Grpc.Testing {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(ReconnectServiceBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(ReconnectServiceBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_Start, serviceImpl.Start)
           .AddMethod(__Method_Stop, serviceImpl.Stop).Build();
     }
diff --git a/src/csharp/Grpc.Reflection/ReflectionGrpc.cs b/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
index 5bd7558be58e2bad6f0877af7cb8f9d77966b944..45321587f5893620b3c6ce8408a7f5620a4b7e2f 100644
--- a/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
+++ b/src/csharp/Grpc.Reflection/ReflectionGrpc.cs
@@ -37,18 +37,18 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using Grpc.Core;
+using grpc = global::Grpc.Core;
 
 namespace Grpc.Reflection.V1Alpha {
   public static partial class ServerReflection
   {
     static readonly string __ServiceName = "grpc.reflection.v1alpha.ServerReflection";
 
-    static readonly Marshaller<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest> __Marshaller_ServerReflectionRequest = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Reflection.V1Alpha.ServerReflectionRequest.Parser.ParseFrom);
-    static readonly Marshaller<global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> __Marshaller_ServerReflectionResponse = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Reflection.V1Alpha.ServerReflectionResponse.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest> __Marshaller_ServerReflectionRequest = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Reflection.V1Alpha.ServerReflectionRequest.Parser.ParseFrom);
+    static readonly grpc::Marshaller<global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> __Marshaller_ServerReflectionResponse = grpc::Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), global::Grpc.Reflection.V1Alpha.ServerReflectionResponse.Parser.ParseFrom);
 
-    static readonly Method<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> __Method_ServerReflectionInfo = new Method<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse>(
-        MethodType.DuplexStreaming,
+    static readonly grpc::Method<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> __Method_ServerReflectionInfo = new grpc::Method<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse>(
+        grpc::MethodType.DuplexStreaming,
         __ServiceName,
         "ServerReflectionInfo",
         __Marshaller_ServerReflectionRequest,
@@ -71,24 +71,24 @@ namespace Grpc.Reflection.V1Alpha {
       /// <param name="responseStream">Used for sending responses back to the client.</param>
       /// <param name="context">The context of the server-side call handler being invoked.</param>
       /// <returns>A task indicating completion of the handler.</returns>
-      public virtual global::System.Threading.Tasks.Task ServerReflectionInfo(IAsyncStreamReader<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest> requestStream, IServerStreamWriter<global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> responseStream, ServerCallContext context)
+      public virtual global::System.Threading.Tasks.Task ServerReflectionInfo(grpc::IAsyncStreamReader<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest> requestStream, grpc::IServerStreamWriter<global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> responseStream, grpc::ServerCallContext context)
       {
-        throw new RpcException(new Status(StatusCode.Unimplemented, ""));
+        throw new grpc::RpcException(new grpc::Status(grpc::StatusCode.Unimplemented, ""));
       }
 
     }
 
     /// <summary>Client for ServerReflection</summary>
-    public partial class ServerReflectionClient : ClientBase<ServerReflectionClient>
+    public partial class ServerReflectionClient : grpc::ClientBase<ServerReflectionClient>
     {
       /// <summary>Creates a new client for ServerReflection</summary>
       /// <param name="channel">The channel to use to make remote calls.</param>
-      public ServerReflectionClient(Channel channel) : base(channel)
+      public ServerReflectionClient(grpc::Channel channel) : base(channel)
       {
       }
       /// <summary>Creates a new client for ServerReflection that uses a custom <c>CallInvoker</c>.</summary>
       /// <param name="callInvoker">The callInvoker to use to make remote calls.</param>
-      public ServerReflectionClient(CallInvoker callInvoker) : base(callInvoker)
+      public ServerReflectionClient(grpc::CallInvoker callInvoker) : base(callInvoker)
       {
       }
       /// <summary>Protected parameterless constructor to allow creation of test doubles.</summary>
@@ -109,9 +109,9 @@ namespace Grpc.Reflection.V1Alpha {
       /// <param name="deadline">An optional deadline for the call. The call will be cancelled if deadline is hit.</param>
       /// <param name="cancellationToken">An optional token for canceling the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(grpc::Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))
       {
-        return ServerReflectionInfo(new CallOptions(headers, deadline, cancellationToken));
+        return ServerReflectionInfo(new grpc::CallOptions(headers, deadline, cancellationToken));
       }
       /// <summary>
       /// The reflection service is structured as a bidirectional stream, ensuring
@@ -119,7 +119,7 @@ namespace Grpc.Reflection.V1Alpha {
       /// </summary>
       /// <param name="options">The options for the call.</param>
       /// <returns>The call object.</returns>
-      public virtual AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(CallOptions options)
+      public virtual grpc::AsyncDuplexStreamingCall<global::Grpc.Reflection.V1Alpha.ServerReflectionRequest, global::Grpc.Reflection.V1Alpha.ServerReflectionResponse> ServerReflectionInfo(grpc::CallOptions options)
       {
         return CallInvoker.AsyncDuplexStreamingCall(__Method_ServerReflectionInfo, null, options);
       }
@@ -132,9 +132,9 @@ namespace Grpc.Reflection.V1Alpha {
 
     /// <summary>Creates service definition that can be registered with a server</summary>
     /// <param name="serviceImpl">An object implementing the server-side handling logic.</param>
-    public static ServerServiceDefinition BindService(ServerReflectionBase serviceImpl)
+    public static grpc::ServerServiceDefinition BindService(ServerReflectionBase serviceImpl)
     {
-      return ServerServiceDefinition.CreateBuilder()
+      return grpc::ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_ServerReflectionInfo, serviceImpl.ServerReflectionInfo).Build();
     }
 
diff --git a/src/csharp/doc/grpc_csharp_public.shfbproj b/src/csharp/doc/grpc_csharp_public.shfbproj
index d9b9749819099de7c731dee84d75ba93983ca2fa..fab953da35339dab4bfadbced1f8f14972db0456 100644
--- a/src/csharp/doc/grpc_csharp_public.shfbproj
+++ b/src/csharp/doc/grpc_csharp_public.shfbproj
@@ -18,8 +18,10 @@
     <Language>en-US</Language>
     <DocumentationSources>
       <DocumentationSource sourceFile="..\Grpc.Auth\Grpc.Auth.csproj" />
-      <DocumentationSource sourceFile="..\Grpc.Core\Grpc.Core.csproj" />
-    </DocumentationSources>
+<DocumentationSource sourceFile="..\Grpc.Core\Grpc.Core.csproj" />
+<DocumentationSource sourceFile="..\Grpc.HealthCheck\Grpc.HealthCheck.csproj" />
+<DocumentationSource sourceFile="..\Grpc.Reflection\Grpc.Reflection.csproj" />
+<DocumentationSource sourceFile="..\Grpc.Core.Testing\Grpc.Core.Testing.csproj" /></DocumentationSources>
     <BuildAssemblerVerbosity>OnlyWarningsAndErrors</BuildAssemblerVerbosity>
     <HelpFileFormat>Website</HelpFileFormat>
     <IndentHtml>False</IndentHtml>
@@ -40,12 +42,13 @@
     <HtmlHelpName>Documentation</HtmlHelpName>
     <NamespaceSummaries>
       <NamespaceSummaryItem name="Grpc.Auth" isDocumented="True">Provides OAuth2 based authentication for gRPC. &lt;c&gt;Grpc.Auth&lt;/c&gt; currently consists of a set of very lightweight wrappers and uses C# &lt;a href="https://www.nuget.org/packages/Google.Apis.Auth/"&gt;Google.Apis.Auth&lt;/a&gt; library.</NamespaceSummaryItem>
-<NamespaceSummaryItem name="Grpc.Core" isDocumented="True">Main namespace for gRPC C# functionality. Contains concepts representing both client side and server side gRPC logic.
+      <NamespaceSummaryItem name="Grpc.Core" isDocumented="True">Main namespace for gRPC C# functionality. Contains concepts representing both client side and server side gRPC logic.
 
 &lt;seealso cref="Grpc.Core.Channel"/&gt; 
 &lt;seealso cref="Grpc.Core.Server"/&gt;</NamespaceSummaryItem>
-<NamespaceSummaryItem name="Grpc.Core.Logging" isDocumented="True">Provides functionality to redirect gRPC logs to application-specified destination.</NamespaceSummaryItem>
-<NamespaceSummaryItem name="Grpc.Core.Utils" isDocumented="True">Various utilities for gRPC C#.</NamespaceSummaryItem></NamespaceSummaries>
+      <NamespaceSummaryItem name="Grpc.Core.Logging" isDocumented="True">Provides functionality to redirect gRPC logs to application-specified destination.</NamespaceSummaryItem>
+      <NamespaceSummaryItem name="Grpc.Core.Utils" isDocumented="True">Various utilities for gRPC C#.</NamespaceSummaryItem>
+    </NamespaceSummaries>
     <MissingTags>Summary, Parameter, AutoDocumentCtors, Namespace, TypeParameter, AutoDocumentDispose</MissingTags>
   </PropertyGroup>
   <!-- There are no properties for these groups.  AnyCPU needs to appear in order for Visual Studio to perform
diff --git a/src/node/ext/server_uv.cc b/src/node/ext/server_uv.cc
index bf8b609a63f584798d4a8640487fb2382cd62f05..c5e5ca9f42db0d6099ec7022e5810edfb53ed08f 100644
--- a/src/node/ext/server_uv.cc
+++ b/src/node/ext/server_uv.cc
@@ -47,12 +47,12 @@ namespace grpc {
 namespace node {
 
 using Nan::Callback;
+using Nan::MaybeLocal;
 
 using v8::External;
 using v8::Function;
 using v8::FunctionTemplate;
 using v8::Local;
-using v8::MaybeLocal;
 using v8::Object;
 using v8::Value;
 
diff --git a/src/node/src/common.js b/src/node/src/common.js
index 98eabf5c0b895cc5f7783ee10588069e6f3ef744..a0fe4480eab9f3e59785ef95002756e950d38536 100644
--- a/src/node/src/common.js
+++ b/src/node/src/common.js
@@ -149,6 +149,7 @@ exports.getProtobufServiceAttrs = function getProtobufServiceAttrs(service,
     return _.camelCase(method.name);
   }), _.map(service.children, function(method) {
     return {
+      originalName: method.name,
       path: prefix + method.name,
       requestStream: method.requestStream,
       responseStream: method.responseStream,
diff --git a/src/node/src/server.js b/src/node/src/server.js
index a5a0ea264203f39f1bb8f948d3a0b449df99064e..bdb4a5620399f8c3196da425d0dde694c5b6605c 100644
--- a/src/node/src/server.js
+++ b/src/node/src/server.js
@@ -755,9 +755,16 @@ Server.prototype.addService = function(service, implementation) {
     }
     var impl;
     if (implementation[name] === undefined) {
-      common.log(grpc.logVerbosity.ERROR, 'Method handler for ' +
-          attrs.path + ' expected but not provided');
-      impl = defaultHandler[method_type];
+      /* Handle the case where the method is passed with the name exactly as
+         written in the proto file, instead of using JavaScript function
+         naming style */
+      if (implementation[attrs.originalName] === undefined) {
+        common.log(grpc.logVerbosity.ERROR, 'Method handler ' + name + ' for ' +
+            attrs.path + ' expected but not provided');
+        impl = defaultHandler[method_type];
+      } else {
+        impl = _.bind(implementation[attrs.originalName], implementation);
+      }
     } else {
       impl = _.bind(implementation[name], implementation);
     }
diff --git a/src/node/test/surface_test.js b/src/node/test/surface_test.js
index 2636ea85ac8e81113dc2e7c6db5c9c484d4b057f..1d739562a698aa927b154bea4d66adeb9d3ba612 100644
--- a/src/node/test/surface_test.js
+++ b/src/node/test/surface_test.js
@@ -143,6 +143,32 @@ describe('Server.prototype.addProtoService', function() {
       server.addProtoService(mathService, dummyImpls);
     });
   });
+  it('Should allow method names as originally written', function() {
+    var altDummyImpls = {
+      'Div': function() {},
+      'DivMany': function() {},
+      'Fib': function() {},
+      'Sum': function() {}
+    };
+    assert.doesNotThrow(function() {
+      server.addProtoService(mathService, altDummyImpls);
+    });
+  });
+  it('Should have a conflict between name variations', function() {
+    /* This is really testing that both name variations are actually used,
+       by checking that the method actually gets registered, for the
+       corresponding function, in both cases */
+    var altDummyImpls = {
+      'Div': function() {},
+      'DivMany': function() {},
+      'Fib': function() {},
+      'Sum': function() {}
+    };
+    server.addProtoService(mathService, altDummyImpls);
+    assert.throws(function() {
+      server.addProtoService(mathService, dummyImpls);
+    });
+  });
   it('Should fail if the server has been started', function() {
     server.start();
     assert.throws(function() {
diff --git a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
index ab8f82a39e74ce19fa25627f7de1ef19396857c9..2f41ad196a651f50fb35544f8e23b8c73c2fef1a 100644
--- a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
+++ b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
@@ -101,9 +101,9 @@ Pod::Spec.new do |s|
   s.preserve_paths = plugin
 
   # Restrict the protoc version to the one supported by this plugin.
-  s.dependency '!ProtoCompiler', '3.1.0'
+  s.dependency '!ProtoCompiler', '3.2.0'
   # For the Protobuf dependency not to complain:
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
   # Restrict the gRPC runtime version to the one supported by this plugin.
   s.dependency 'gRPC-ProtoRPC', v
diff --git a/src/objective-c/!ProtoCompiler.podspec b/src/objective-c/!ProtoCompiler.podspec
index dc4d8e964e62c5694a517c2a3211cdcab91f4ec8..2e9b944f33dc45a46cb6e5ab8117e024925129c8 100644
--- a/src/objective-c/!ProtoCompiler.podspec
+++ b/src/objective-c/!ProtoCompiler.podspec
@@ -36,7 +36,7 @@ Pod::Spec.new do |s|
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler'
-  v = '3.1.0'
+  v = '3.2.0'
   s.version  = v
   s.summary  = 'The Protobuf Compiler (protoc) generates Objective-C files from .proto files'
   s.description = <<-DESC
@@ -110,7 +110,7 @@ Pod::Spec.new do |s|
   # Restrict the protobuf runtime version to the one supported by this version of protoc.
   s.dependency 'Protobuf', '~> 3.0'
   # For the Protobuf dependency not to complain:
-  s.ios.deployment_target = '7.1'
+  s.ios.deployment_target = '7.0'
   s.osx.deployment_target = '10.9'
 
   # This is only for local development of protoc: If the Podfile brings this pod from a local
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 44393f6b9998d7fc7005f860fd0442e2266ff38e..051138ea4da3ec7235e1996aea99cad81460923f 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -36,6 +36,7 @@
 #include <grpc/grpc.h>
 #include <grpc/support/time.h>
 #import <RxLibrary/GRXConcurrentWriteable.h>
+#import <RxLibrary/GRXImmediateSingleWriter.h>
 
 #import "private/GRPCConnectivityMonitor.h"
 #import "private/GRPCHost.h"
@@ -45,6 +46,11 @@
 #import "private/NSDictionary+GRPC.h"
 #import "private/NSError+GRPC.h"
 
+// At most 6 ops can be in an op batch for a client: SEND_INITIAL_METADATA,
+// SEND_MESSAGE, SEND_CLOSE_FROM_CLIENT, RECV_INITIAL_METADATA, RECV_MESSAGE,
+// and RECV_STATUS_ON_CLIENT.
+NSInteger kMaxClientBatch = 6;
+
 NSString * const kGRPCHeadersKey = @"io.grpc.HeadersKey";
 NSString * const kGRPCTrailersKey = @"io.grpc.TrailersKey";
 static NSMutableDictionary *callFlags;
@@ -100,6 +106,13 @@ static NSMutableDictionary *callFlags;
   GRPCCall *_retainSelf;
 
   GRPCRequestHeaders *_requestHeaders;
+
+  // In the case that the call is a unary call (i.e. the writer to GRPCCall is of type
+  // GRXImmediateSingleWriter), GRPCCall will delay sending ops (not send them to C core
+  // immediately) and buffer them into a batch _unaryOpBatch. The batch is sent to C core when
+  // the SendClose op is added.
+  BOOL _unaryCall;
+  NSMutableArray *_unaryOpBatch;
 }
 
 @synthesize state = _state;
@@ -157,6 +170,11 @@ static NSMutableDictionary *callFlags;
     _requestWriter = requestWriter;
 
     _requestHeaders = [[GRPCRequestHeaders alloc] initWithCall:self];
+
+    if ([requestWriter isKindOfClass:[GRXImmediateSingleWriter class]]) {
+      _unaryCall = YES;
+      _unaryOpBatch = [NSMutableArray arrayWithCapacity:kMaxClientBatch];
+    }
   }
   return self;
 }
@@ -165,6 +183,9 @@ static NSMutableDictionary *callFlags;
 
 - (void)finishWithError:(NSError *)errorOrNil {
   @synchronized(self) {
+    if (_state == GRXWriterStateFinished) {
+      return;
+    }
     _state = GRXWriterStateFinished;
   }
 
@@ -254,15 +275,22 @@ static NSMutableDictionary *callFlags;
 
 - (void)sendHeaders:(NSDictionary *)headers {
   // TODO(jcanizales): Add error handlers for async failures
-  [_wrappedCall startBatchWithOperations:@[[[GRPCOpSendMetadata alloc] initWithMetadata:headers
-                                                                                  flags:[GRPCCall callFlagsForHost:_host path:_path]
-                                                                                handler:nil]]];
+  GRPCOpSendMetadata *op = [[GRPCOpSendMetadata alloc] initWithMetadata:headers
+                                                                  flags:[GRPCCall callFlagsForHost:_host path:_path]
+                                                                handler:nil];  // No clean-up needed after SEND_INITIAL_METADATA
+  if (!_unaryCall) {
+    [_wrappedCall startBatchWithOperations:@[op]];
+  } else {
+    [_unaryOpBatch addObject:op];
+  }
 }
 
 #pragma mark GRXWriteable implementation
 
 // Only called from the call queue. The error handler will be called from the
 // network queue if the write didn't succeed.
+// If the call is a unary call, parameter \a errorHandler will be ignored and
+// the error handler of GRPCOpSendClose will be executed in case of error.
 - (void)writeMessage:(NSData *)message withErrorHandler:(void (^)())errorHandler {
 
   __weak GRPCCall *weakSelf = self;
@@ -275,9 +303,17 @@ static NSMutableDictionary *callFlags;
       }
     }
   };
-  [_wrappedCall startBatchWithOperations:@[[[GRPCOpSendMessage alloc] initWithMessage:message
-                                                                              handler:resumingHandler]]
-                            errorHandler:errorHandler];
+
+  GRPCOpSendMessage *op = [[GRPCOpSendMessage alloc] initWithMessage:message
+                                                             handler:resumingHandler];
+  if (!_unaryCall) {
+    [_wrappedCall startBatchWithOperations:@[op]
+                              errorHandler:errorHandler];
+  } else {
+    // Ignored errorHandler since it is the same as the one for GRPCOpSendClose.
+    // TODO (mxyan): unify the error handlers of all Ops into a single closure.
+    [_unaryOpBatch addObject:op];
+  }
 }
 
 - (void)writeValue:(id)value {
@@ -302,8 +338,14 @@ static NSMutableDictionary *callFlags;
 // Only called from the call queue. The error handler will be called from the
 // network queue if the requests stream couldn't be closed successfully.
 - (void)finishRequestWithErrorHandler:(void (^)())errorHandler {
-  [_wrappedCall startBatchWithOperations:@[[[GRPCOpSendClose alloc] init]]
-                            errorHandler:errorHandler];
+  if (!_unaryCall) {
+    [_wrappedCall startBatchWithOperations:@[[[GRPCOpSendClose alloc] init]]
+                              errorHandler:errorHandler];
+  } else {
+    [_unaryOpBatch addObject:[[GRPCOpSendClose alloc] init]];
+    [_wrappedCall startBatchWithOperations:_unaryOpBatch
+                              errorHandler:errorHandler];
+  }
 }
 
 - (void)writesFinishedWithError:(NSError *)errorOrNil {
diff --git a/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.h b/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.h
new file mode 100644
index 0000000000000000000000000000000000000000..29bd12f0cfb5dfafe6fb155d923715c8a976dd56
--- /dev/null
+++ b/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.h
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2017, 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.
+ *
+ */
+
+#ifdef GRPC_TEST_OBJC
+
+#import "../GRPCCall.h"
+
+/**
+ * Methods used for gRPC internal tests. DO NOT USE.
+ */
+@interface GRPCCall (InternalTests)
+
+/**
+ * Enables logging of op batches. Memory consumption increases as more ops are logged.
+ *
+ * This function is for internal testing of gRPC only. It is not part of gRPC's public interface.
+ * Do not use in production. To enable, set the preprocessor flag GRPC_TEST_OBJC.
+ */
++ (void)enableOpBatchLog:(BOOL)enabled;
+
+/**
+ * Obtain the logged op batches. Invoking this method will clean the log.
+ *
+ * This function is for internal testing of gRPC only. It is not part of gRPC's public interface.
+ * Do not use in production. To enable, set the preprocessor flag GRPC_TEST_OBJC.
+ */
++ (NSArray *)obtainAndCleanOpBatchLog;
+
+@end
+
+#endif
diff --git a/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.m b/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.m
new file mode 100644
index 0000000000000000000000000000000000000000..6371df6739a4e184709bcf4b8142a39ffe44c177
--- /dev/null
+++ b/src/objective-c/GRPCClient/internal_testing/GRPCCall+InternalTests.m
@@ -0,0 +1,52 @@
+/*
+ *
+ * Copyright 2017, 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.
+ *
+ */
+
+#ifdef GRPC_TEST_OBJC
+
+#import "GRPCCall+InternalTests.h"
+
+#import "../private/GRPCOpBatchLog.h"
+
+@implementation GRPCCall (InternalTests)
+
++ (void)enableOpBatchLog:(BOOL)enabled {
+  [GRPCOpBatchLog enableOpBatchLog:enabled];
+}
+
++ (NSArray *)obtainAndCleanOpBatchLog {
+  return [GRPCOpBatchLog obtainAndCleanOpBatchLog];
+}
+
+@end
+
+#endif
diff --git a/src/objective-c/GRPCClient/private/GRPCOpBatchLog.h b/src/objective-c/GRPCClient/private/GRPCOpBatchLog.h
new file mode 100644
index 0000000000000000000000000000000000000000..753c4cfee6fb2783a8213bc2267a298d4533222d
--- /dev/null
+++ b/src/objective-c/GRPCClient/private/GRPCOpBatchLog.h
@@ -0,0 +1,59 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+
+#ifdef GRPC_TEST_OBJC
+
+/**
+ * Logs the op batches of a client. Used for testing.
+ */
+@interface GRPCOpBatchLog : NSObject
+
+/**
+ * Enables logging of op batches. Memory consumption increases as more ops are logged.
+ */
++ (void)enableOpBatchLog:(BOOL)enabled;
+
+/**
+ * Add an op batch to log.
+ */
++ (void)addOpBatchToLog:(NSArray *)batch;
+
+/**
+ * Obtain the logged op batches. Invoking this method will clean the log.
+ */
++ (NSArray *)obtainAndCleanOpBatchLog;
+
+@end
+
+#endif
diff --git a/src/objective-c/GRPCClient/private/GRPCOpBatchLog.m b/src/objective-c/GRPCClient/private/GRPCOpBatchLog.m
new file mode 100644
index 0000000000000000000000000000000000000000..4b40baf122bc73bf4c0ef3b21cd8244d97c6437f
--- /dev/null
+++ b/src/objective-c/GRPCClient/private/GRPCOpBatchLog.m
@@ -0,0 +1,72 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifdef GRPC_TEST_OBJC
+
+#import "GRPCOpBatchLog.h"
+
+static NSMutableArray *opBatchLog = nil;
+
+@implementation GRPCOpBatchLog
+
++ (void)enableOpBatchLog:(BOOL)enabled {
+  @synchronized (opBatchLog) {
+    if (enabled) {
+      if (!opBatchLog) {
+        opBatchLog = [NSMutableArray array];
+      }
+    } else {
+      if (opBatchLog) {
+        opBatchLog = nil;
+      }
+    }
+  }
+}
+
++ (void)addOpBatchToLog:(NSArray *)batch {
+  @synchronized (opBatchLog) {
+    [opBatchLog addObject:batch];
+  }
+}
+
++ (NSArray *)obtainAndCleanOpBatchLog {
+  @synchronized (opBatchLog) {
+    NSArray *out = opBatchLog;
+    opBatchLog = [NSMutableArray array];
+    return out;
+  }
+}
+
+@end
+
+#endif
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index 9f1901ab30abc631f41cdc555cd0b1205919377f..46e9fee7e1fe885f4ab50660f08b95d0113f3eae 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -44,6 +44,8 @@
 #import "NSData+GRPC.h"
 #import "NSError+GRPC.h"
 
+#import "GRPCOpBatchLog.h"
+
 @implementation GRPCOperation {
 @protected
   // Most operation subclasses don't set any flags in the grpc_op, and rely on the flag member being
@@ -274,6 +276,12 @@
 }
 
 - (void)startBatchWithOperations:(NSArray *)operations errorHandler:(void (^)())errorHandler {
+  // Keep logs of op batches when we are running tests. Disabled when in production for improved
+  // performance.
+#ifdef GRPC_TEST_OBJC
+  [GRPCOpBatchLog addOpBatchToLog:operations];
+#endif
+
   size_t nops = operations.count;
   grpc_op *ops_array = gpr_malloc(nops * sizeof(grpc_op));
   size_t i = 0;
diff --git a/src/objective-c/RxLibrary/GRXImmediateSingleWriter.h b/src/objective-c/RxLibrary/GRXImmediateSingleWriter.h
new file mode 100644
index 0000000000000000000000000000000000000000..0ec788f756b6ff205a392ab58c37ee45e505ed88
--- /dev/null
+++ b/src/objective-c/RxLibrary/GRXImmediateSingleWriter.h
@@ -0,0 +1,50 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "GRXImmediateWriter.h"
+
+/**
+ * Utility to construct GRXWriter instances from values that are immediately available when
+ * required.
+ */
+@interface GRXImmediateSingleWriter : GRXImmediateWriter
+
+/**
+ * Returns a writer that sends the passed value to its writeable and then finishes (releasing the
+ * value).
+ */
++ (GRXWriter *)writerWithValue:(id)value;
+
+@end
diff --git a/src/objective-c/RxLibrary/GRXImmediateSingleWriter.m b/src/objective-c/RxLibrary/GRXImmediateSingleWriter.m
new file mode 100644
index 0000000000000000000000000000000000000000..0096c996d4c57fd0048c76a12a3c74597c4e7d2d
--- /dev/null
+++ b/src/objective-c/RxLibrary/GRXImmediateSingleWriter.m
@@ -0,0 +1,89 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import "GRXImmediateSingleWriter.h"
+
+@implementation GRXImmediateSingleWriter {
+  id _value;
+  id<GRXWriteable> _writeable;
+}
+
+@synthesize state = _state;
+
+- (instancetype)initWithValue:(id)value {
+  if (self = [super init]) {
+    _value = value;
+    _state = GRXWriterStateNotStarted;
+  }
+  return self;
+}
+
++ (GRXWriter *)writerWithValue:(id)value {
+  return [[self alloc] initWithValue:value];
+}
+
+- (void)startWithWriteable:(id<GRXWriteable>)writeable {
+  _state = GRXWriterStateStarted;
+  _writeable = writeable;
+  [writeable writeValue:_value];
+  [self finish];
+}
+
+- (void)finish {
+  _state = GRXWriterStateFinished;
+  _value = nil;
+  id<GRXWriteable> writeable = _writeable;
+  _writeable = nil;
+  [writeable writesFinishedWithError:nil];
+}
+
+// Overwrite the setter to disallow manual state transition. The getter
+// of _state is synthesized.
+- (void)setState:(GRXWriterState)newState {
+  // Manual state transition is not allowed
+  return;
+}
+
+// Overrides [requestWriter(Transformations):map:] for Protocol Buffers
+// encoding.
+// We need the return value of this map to be a GRXImmediateSingleWriter but
+// the original \a map function returns a new Writer of another type. So we
+// need to override this function here.
+- (GRXWriter *)map:(id (^)(id))map {
+  // Since _value is available when creating the object, we can simply
+  // apply the map and store the output.
+  _value = map(_value);
+  return self;
+}
+
+@end
diff --git a/src/objective-c/RxLibrary/GRXWriter+Immediate.m b/src/objective-c/RxLibrary/GRXWriter+Immediate.m
index 1d55eb35293ecddf4757b792d8b0a764fb533a9d..ea6e6814063be76e8cfa0f6907f1cc5e58912865 100644
--- a/src/objective-c/RxLibrary/GRXWriter+Immediate.m
+++ b/src/objective-c/RxLibrary/GRXWriter+Immediate.m
@@ -34,6 +34,7 @@
 #import "GRXWriter+Immediate.h"
 
 #import "GRXImmediateWriter.h"
+#import "GRXImmediateSingleWriter.h"
 
 @implementation GRXWriter (Immediate)
 
@@ -50,7 +51,7 @@
 }
 
 + (instancetype)writerWithValue:(id)value {
-  return [GRXImmediateWriter writerWithValue:value];
+  return [GRXImmediateSingleWriter writerWithValue:value];
 }
 
 + (instancetype)writerWithError:(NSError *)error {
diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
index e97f3d2d1a9edbbc99b5a4f111f7df4d1c60390e..a76e45416bf75f5767bf2b4a6cf869f0ef6e7a72 100644
--- a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -187,6 +187,18 @@ unsigned int parse_h2_length(const char *field) {
   grpc_metadata_array_init(&request_metadata_recv);
   grpc_call_details_init(&call_details);
 
+  int sl = socket(AF_INET, SOCK_STREAM, 0);
+  GPR_ASSERT(sl >= 0);
+
+  // Make an TCP endpoint to accept the connection
+  struct sockaddr_in s_addr;
+  memset(&s_addr, 0, sizeof(s_addr));
+  s_addr.sin_family = AF_INET;
+  s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
+  s_addr.sin_port = htons(port);
+  GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
+  GPR_ASSERT(0 == listen(sl, 5));
+
   memset(ops, 0, sizeof(ops));
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -226,17 +238,6 @@ unsigned int parse_h2_length(const char *field) {
 
   dispatch_async(
       dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        int sl = socket(AF_INET, SOCK_STREAM, 0);
-        GPR_ASSERT(sl >= 0);
-
-        // Make and TCP endpoint to accept the connection
-        struct sockaddr_in s_addr;
-        memset(&s_addr, 0, sizeof(s_addr));
-        s_addr.sin_family = AF_INET;
-        s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
-        s_addr.sin_port = htons(port);
-        GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
-        GPR_ASSERT(0 == listen(sl, 5));
         int s = accept(sl, NULL, NULL);
         GPR_ASSERT(s >= 0);
 
@@ -324,17 +325,18 @@ unsigned int parse_h2_length(const char *field) {
   __weak XCTestExpectation *expectation =
       [self expectationWithDescription:@"Coalescing"];
 
+  int sl = socket(AF_INET, SOCK_STREAM, 0);
+  GPR_ASSERT(sl >= 0);
+  struct sockaddr_in s_addr;
+  memset(&s_addr, 0, sizeof(s_addr));
+  s_addr.sin_family = AF_INET;
+  s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
+  s_addr.sin_port = htons(port);
+  GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
+  GPR_ASSERT(0 == listen(sl, 5));
+
   dispatch_async(
       dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        int sl = socket(AF_INET, SOCK_STREAM, 0);
-        GPR_ASSERT(sl >= 0);
-        struct sockaddr_in s_addr;
-        memset(&s_addr, 0, sizeof(s_addr));
-        s_addr.sin_family = AF_INET;
-        s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
-        s_addr.sin_port = htons(port);
-        GPR_ASSERT(0 == bind(sl, (struct sockaddr *)&s_addr, sizeof(s_addr)));
-        GPR_ASSERT(0 == listen(sl, 5));
         int s = accept(sl, NULL, NULL);
         GPR_ASSERT(s >= 0);
         struct timeval tv;
@@ -389,9 +391,6 @@ unsigned int parse_h2_length(const char *field) {
         [expectation fulfill];
       });
 
-  // Guarantees that server is listening to the port before client connects.
-  sleep(1);
-
   memset(ops, 0, sizeof(ops));
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index 0b72a75f3d5b275cd5215a37d18b52548fcf775e..76c15003f603a5b97c5f261db5f645c09cc7e335 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -38,6 +38,7 @@
 #import <GRPCClient/GRPCCall+ChannelArg.h>
 #import <GRPCClient/GRPCCall+OAuth2.h>
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 #import <ProtoRPC/ProtoMethod.h>
 #import <RemoteTest/Messages.pbobjc.h>
 #import <RxLibrary/GRXWriteable.h>
diff --git a/src/objective-c/tests/InteropTests.m b/src/objective-c/tests/InteropTests.m
index d964f53e8e2c0b6d5cb6ea7495b6d279aa13f934..91053568690a4b7c3b8addfb24056ddee2f947cd 100644
--- a/src/objective-c/tests/InteropTests.m
+++ b/src/objective-c/tests/InteropTests.m
@@ -38,6 +38,7 @@
 #import <Cronet/Cronet.h>
 #import <GRPCClient/GRPCCall+ChannelArg.h>
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 #import <GRPCClient/GRPCCall+Cronet.h>
 #import <ProtoRPC/ProtoRPC.h>
 #import <RemoteTest/Messages.pbobjc.h>
@@ -45,6 +46,8 @@
 #import <RemoteTest/Test.pbrpc.h>
 #import <RxLibrary/GRXBufferedPipe.h>
 #import <RxLibrary/GRXWriter+Immediate.h>
+#import <grpc/support/log.h>
+#import <grpc/grpc.h>
 
 #define TEST_TIMEOUT 32
 
@@ -97,15 +100,6 @@
   return 0;
 }
 
-+ (void)setUp {
-#ifdef GRPC_COMPILE_WITH_CRONET
-  // Cronet setup
-  [Cronet setHttp2Enabled:YES];
-  [Cronet start];
-  [GRPCCall useCronetWithEngine:[Cronet getGlobalEngine]];
-#endif
-}
-
 - (void)setUp {
   self.continueAfterFailure = NO;
 
@@ -155,6 +149,44 @@
   [self waitForExpectationsWithTimeout:TEST_TIMEOUT handler:nil];
 }
 
+- (void)testPacketCoalescing {
+  XCTAssertNotNil(self.class.host);
+  __weak XCTestExpectation *expectation = [self expectationWithDescription:@"LargeUnary"];
+
+  RMTSimpleRequest *request = [RMTSimpleRequest message];
+  request.responseType = RMTPayloadType_Compressable;
+  request.responseSize = 10;
+  request.payload.body = [NSMutableData dataWithLength:10];
+
+  [GRPCCall enableOpBatchLog:YES];
+  [_service unaryCallWithRequest:request handler:^(RMTSimpleResponse *response, NSError *error) {
+    XCTAssertNil(error, @"Finished with unexpected error: %@", error);
+
+    RMTSimpleResponse *expectedResponse = [RMTSimpleResponse message];
+    expectedResponse.payload.type = RMTPayloadType_Compressable;
+    expectedResponse.payload.body = [NSMutableData dataWithLength:10];
+    XCTAssertEqualObjects(response, expectedResponse);
+
+    // The test is a success if there is a batch of exactly 3 ops (SEND_INITIAL_METADATA,
+    // SEND_MESSAGE, SEND_CLOSE_FROM_CLIENT). Without packet coalescing each batch of ops contains
+    // only one op.
+    NSArray *opBatches = [GRPCCall obtainAndCleanOpBatchLog];
+    const NSInteger kExpectedOpBatchSize = 3;
+    for (NSObject *o in opBatches) {
+      if ([o isKindOfClass:[NSArray class]]) {
+        NSArray *batch = (NSArray *)o;
+        if ([batch count] == kExpectedOpBatchSize) {
+          [expectation fulfill];
+          break;
+        }
+      }
+    }
+  }];
+
+  [self waitForExpectationsWithTimeout:16 handler:nil];
+  [GRPCCall enableOpBatchLog:NO];
+}
+
 - (void)test4MBResponsesAreAccepted {
   XCTAssertNotNil(self.class.host);
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"MaxResponseSize"];
diff --git a/src/objective-c/tests/InteropTestsLocalCleartext.m b/src/objective-c/tests/InteropTestsLocalCleartext.m
index 498766080872a359768d7a6e38bdff888366bfba..94cdf859653954ad52cbb4d385a915b737a3dadc 100644
--- a/src/objective-c/tests/InteropTestsLocalCleartext.m
+++ b/src/objective-c/tests/InteropTestsLocalCleartext.m
@@ -32,6 +32,7 @@
  */
 
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 
 #import "InteropTests.h"
 
diff --git a/src/objective-c/tests/InteropTestsLocalSSL.m b/src/objective-c/tests/InteropTestsLocalSSL.m
index 934d500abc0275c90ed36a02b3252ff2a64da0f3..3c78b65ede99bf3733e5a53e5493e69a52b727bf 100644
--- a/src/objective-c/tests/InteropTestsLocalSSL.m
+++ b/src/objective-c/tests/InteropTestsLocalSSL.m
@@ -32,6 +32,7 @@
  */
 
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 
 #import "InteropTests.h"
 
diff --git a/src/objective-c/tests/InteropTestsRemote.m b/src/objective-c/tests/InteropTestsRemote.m
index 9fb30aa43d041c3f8c3d245650ca420510fd4a85..ff1193302b0d885485a03571b297a3d5637be403 100644
--- a/src/objective-c/tests/InteropTestsRemote.m
+++ b/src/objective-c/tests/InteropTestsRemote.m
@@ -32,6 +32,7 @@
  */
 
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
 
 #import "InteropTests.h"
 
diff --git a/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
index 005bac0a0d4851bdd0b2a094fd1518ac89eb4c41..9edfbc2639d2525408fb420b09c6e00cad454f8e 100644
--- a/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
+++ b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
@@ -32,6 +32,10 @@
  */
 
 #import <GRPCClient/GRPCCall+Tests.h>
+#import <GRPCClient/internal_testing/GRPCCall+InternalTests.h>
+
+#import <Cronet/Cronet.h>
+#import <GRPCClient/GRPCCall+Cronet.h>
 
 #import "InteropTests.h"
 
diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index 3760330be9a19456d047c7a663d975e67e9955d9..8f1cb041d86df17354b84175cc01dddc3ec7d86d 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -97,15 +97,20 @@ post_install do |installer|
         # GPR_UNREACHABLE_CODE causes "Control may reach end of non-void
         # function" warning
         config.build_settings['GCC_WARN_ABOUT_RETURN_TYPE'] = 'NO'
+        config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = '$(inherited) COCOAPODS=1 GRPC_CRONET_WITH_PACKET_COALESCING=1'
       end
     end
 
     # Activate Cronet for the dedicated build configuration 'Cronet', which will be used solely by
     # the test target 'InteropTestsRemoteWithCronet'
+    # Activate GRPCCall+InternalTests functions for the dedicated build configuration 'Test', which will
+    # be used by all test targets using it.
     if target.name == 'gRPC'
       target.build_configurations.each do |config|
         if config.name == 'Cronet'
-          config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = '$(inherited) COCOAPODS=1 GRPC_COMPILE_WITH_CRONET=1'
+          config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = '$(inherited) COCOAPODS=1 GRPC_COMPILE_WITH_CRONET=1 GRPC_TEST_OBJC=1'
+        elsif config.name == 'Test'
+          config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] = '$(inherited) COCOAPODS=1 GRPC_TEST_OBJC=1'
         end
       end
     end
diff --git a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
index 32b35ef333abe476d1ba736c02c4153da65b2ec1..97de723a22a61371c006ad428af66163aca0b43a 100644
--- a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
+++ b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
@@ -125,8 +125,10 @@
 		0A4F89D9C90E9C30990218F0 /* Pods.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = Pods.release.xcconfig; path = "Pods/Target Support Files/Pods/Pods.release.xcconfig"; sourceTree = "<group>"; };
 		0D2284C3DF7E57F0ED504E39 /* Pods-CoreCronetEnd2EndTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-CoreCronetEnd2EndTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-CoreCronetEnd2EndTests/Pods-CoreCronetEnd2EndTests.debug.xcconfig"; sourceTree = "<group>"; };
 		14B09A58FEE53A7A6B838920 /* Pods-InteropTestsLocalSSL.cronet.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsLocalSSL.cronet.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsLocalSSL/Pods-InteropTestsLocalSSL.cronet.xcconfig"; sourceTree = "<group>"; };
+		1588C85DEAF7FC0ACDEA4C02 /* Pods-InteropTestsLocalCleartext.test.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsLocalCleartext.test.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsLocalCleartext/Pods-InteropTestsLocalCleartext.test.xcconfig"; sourceTree = "<group>"; };
 		17F60BF2871F6AF85FB3FA12 /* Pods-InteropTestsRemoteWithCronet.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsRemoteWithCronet.debug.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet.debug.xcconfig"; sourceTree = "<group>"; };
 		20DFF2F3C97EF098FE5A3171 /* libPods-Tests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Tests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
+		2B89F3037963E6EDDD48D8C3 /* Pods-InteropTestsRemoteWithCronet.test.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsRemoteWithCronet.test.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet.test.xcconfig"; sourceTree = "<group>"; };
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 				635697DC1B14FC11007A7283 /* Debug */,
+				5E1228991E4D400F00E8504F /* Test */,
 				5EC3C7A11D4FC18C000330E2 /* Cronet */,
 				635697DD1B14FC11007A7283 /* Release */,
 			);
@@ -1830,6 +2063,7 @@
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				63DC841C1BE15179000708E8 /* Debug */,
+				5E12289B1E4D400F00E8504F /* Test */,
 				5EC3C7A31D4FC18C000330E2 /* Cronet */,
 				63DC841D1BE15179000708E8 /* Release */,
 			);
@@ -1840,6 +2074,7 @@
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				63DC842C1BE15267000708E8 /* Debug */,
+				5E12289C1E4D400F00E8504F /* Test */,
 				5EC3C7A41D4FC18C000330E2 /* Cronet */,
 				63DC842D1BE15267000708E8 /* Release */,
 			);
@@ -1850,6 +2085,7 @@
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				63DC843D1BE15294000708E8 /* Debug */,
+				5E12289D1E4D400F00E8504F /* Test */,
 				5EC3C7A51D4FC18C000330E2 /* Cronet */,
 				63DC843E1BE15294000708E8 /* Release */,
 			);
@@ -1860,6 +2096,7 @@
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				63DC844C1BE152B5000708E8 /* Debug */,
+				5E12289E1E4D400F00E8504F /* Test */,
 				5EC3C7A61D4FC18C000330E2 /* Cronet */,
 				63DC844D1BE152B5000708E8 /* Release */,
 			);
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/AllTests.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/AllTests.xcscheme
index 49dc3faa3d093223c0ee7b34f4d0337e85f61207..a2560fee0298638061b3660edf8ac063ce215713 100644
--- a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/AllTests.xcscheme
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/AllTests.xcscheme
@@ -23,7 +23,7 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
@@ -49,26 +49,6 @@
                </Test>
             </SkippedTests>
          </TestableReference>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "5E8A5DA31D3840B4000F8BC4"
-               BuildableName = "CoreCronetEnd2EndTests.xctest"
-               BlueprintName = "CoreCronetEnd2EndTests"
-               ReferencedContainer = "container:Tests.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "5EAD6D231E27047400002378"
-               BuildableName = "CronetUnitTests.xctest"
-               BlueprintName = "CronetUnitTests"
-               ReferencedContainer = "container:Tests.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
       </Testables>
       <MacroExpansion>
          <BuildableReference
@@ -83,7 +63,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
@@ -121,7 +101,7 @@
       </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
-      buildConfiguration = "Debug">
+      buildConfiguration = "Test">
    </AnalyzeAction>
    <ArchiveAction
       buildConfiguration = "Release"
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalCleartext.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalCleartext.xcscheme
index ce358bf69f5945e6da83b11eb4c47af4b7a75004..6d85b62fabf6e01e4c41db967ab16779a1ff6e77 100644
--- a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalCleartext.xcscheme
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalCleartext.xcscheme
@@ -23,7 +23,7 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
@@ -54,7 +54,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
@@ -92,7 +92,7 @@
       </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
-      buildConfiguration = "Debug">
+      buildConfiguration = "Test">
    </AnalyzeAction>
    <ArchiveAction
       buildConfiguration = "Release"
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalSSL.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalSSL.xcscheme
index f268da1fb0c1abdcdb3316385f1b284d16d00906..37135b3ad36b533d140318c5d499d28bb3921352 100644
--- a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalSSL.xcscheme
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsLocalSSL.xcscheme
@@ -23,7 +23,7 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
@@ -57,7 +57,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
@@ -86,7 +86,7 @@
       debugDocumentVersioning = "YES">
    </ProfileAction>
    <AnalyzeAction
-      buildConfiguration = "Debug">
+      buildConfiguration = "Test">
    </AnalyzeAction>
    <ArchiveAction
       buildConfiguration = "Release"
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemote.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemote.xcscheme
index 186d7208e04acc9c1bc9705d37d4e53ead431915..412bf6a0143168a1cd350fa775d2648fc0ea4407 100644
--- a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemote.xcscheme
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemote.xcscheme
@@ -23,7 +23,7 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
@@ -57,7 +57,7 @@
       </AdditionalOptions>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Test"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
@@ -86,7 +86,7 @@
       debugDocumentVersioning = "YES">
    </ProfileAction>
    <AnalyzeAction
-      buildConfiguration = "Debug">
+      buildConfiguration = "Test">
    </AnalyzeAction>
    <ArchiveAction
       buildConfiguration = "Release"
diff --git a/src/objective-c/tests/build_example_test.sh b/src/objective-c/tests/build_example_test.sh
index ae75941ec613f630c538b80f9dfe3e8f5a0e8e96..5c50e831107165c6aec2cca684602a9b567e04cc 100755
--- a/src/objective-c/tests/build_example_test.sh
+++ b/src/objective-c/tests/build_example_test.sh
@@ -35,29 +35,38 @@ set -evo pipefail
 
 cd `dirname $0`
 
+trap 'echo "EXIT TIME:  $(date)"' EXIT
+
+echo "TIME:  $(date)"
 SCHEME=HelloWorld                              \
   EXAMPLE_PATH=examples/objective-c/helloworld \
   ./build_one_example.sh
 
+echo "TIME:  $(date)"
 SCHEME=RouteGuideClient                         \
   EXAMPLE_PATH=examples/objective-c/route_guide \
   ./build_one_example.sh
 
+echo "TIME:  $(date)"
 SCHEME=AuthSample                               \
   EXAMPLE_PATH=examples/objective-c/auth_sample \
   ./build_one_example.sh
 
 rm -f ../examples/RemoteTestClient/*.{h,m}
 
+echo "TIME:  $(date)"
 SCHEME=Sample                                  \
   EXAMPLE_PATH=src/objective-c/examples/Sample \
   ./build_one_example.sh
 
+echo "TIME:  $(date)"
 SCHEME=Sample                                  \
   EXAMPLE_PATH=src/objective-c/examples/Sample \
   FRAMEWORKS=YES                               \
   ./build_one_example.sh
 
+echo "TIME:  $(date)"
 SCHEME=SwiftSample                                  \
   EXAMPLE_PATH=src/objective-c/examples/SwiftSample \
   ./build_one_example.sh
+
diff --git a/src/objective-c/tests/build_one_example.sh b/src/objective-c/tests/build_one_example.sh
index 9fef6582a38b524e5383c605a0ebfdd1e7959819..bb55ca4ee1ee5dc21b2de897944d296ff7411c56 100755
--- a/src/objective-c/tests/build_one_example.sh
+++ b/src/objective-c/tests/build_one_example.sh
@@ -57,6 +57,4 @@ xcodebuild \
     build \
     -workspace *.xcworkspace \
     -scheme $SCHEME \
-    -destination name="iPhone 6" \
-    | egrep "$XCODEBUILD_FILTER" \
-    | egrep -v "(GPBDictionary|GPBArray)" -
+    -destination name="iPhone 6" | xcpretty
diff --git a/src/objective-c/tests/build_tests.sh b/src/objective-c/tests/build_tests.sh
index bc5bc0449436d59571f6548627563c6d76cbd21b..6602d510d94bc14b839a22114f6a2bdda4c863eb 100755
--- a/src/objective-c/tests/build_tests.sh
+++ b/src/objective-c/tests/build_tests.sh
@@ -50,4 +50,5 @@ rm -rf Tests.xcworkspace
 rm -f Podfile.lock
 rm -f RemoteTestClient/*.{h,m}
 
+echo "TIME:  $(date)"
 pod install
diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 677459e0822b25f64d428d33e5b6104838883938..bd7c2945a274b0d0eb33c03f530b29e4486a8580 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -47,25 +47,37 @@ BINDIR=../../../bins/$CONFIG
 $BINDIR/interop_server --port=5050 --max_send_message_size=8388608 &
 $BINDIR/interop_server --port=5051 --max_send_message_size=8388608 --use_tls &
 # Kill them when this script exits.
-trap 'kill -9 `jobs -p`' EXIT
+trap 'kill -9 `jobs -p` ; echo "EXIT TIME:  $(date)"' EXIT
 
 # xcodebuild is very verbose. We filter its output and tell Bash to fail if any
 # element of the pipe fails.
 # TODO(jcanizales): Use xctool instead? Issue #2540.
 set -o pipefail
 XCODEBUILD_FILTER='(^===|^\*\*|\bfatal\b|\berror\b|\bwarning\b|\bfail)'
+echo "TIME:  $(date)"
 xcodebuild \
     -workspace Tests.xcworkspace \
     -scheme AllTests \
     -destination name="iPhone 6" \
-    test \
-    | egrep "$XCODEBUILD_FILTER" \
-    | egrep -v "(GPBDictionary|GPBArray)" -
+    test | xcpretty
 
+echo "TIME:  $(date)"
+xcodebuild \
+    -workspace Tests.xcworkspace \
+    -scheme CoreCronetEnd2EndTests \
+    -destination name="iPhone 6" \
+    test | xcpretty
+
+echo "TIME:  $(date)"
+xcodebuild \
+    -workspace Tests.xcworkspace \
+    -scheme CronetUnitTests \
+    -destination name="iPhone 6" \
+    test | xcpretty
+
+echo "TIME:  $(date)"
 xcodebuild \
     -workspace Tests.xcworkspace \
     -scheme InteropTestsRemoteWithCronet \
     -destination name="iPhone 6" \
-    test \
-    | egrep "$XCODEBUILD_FILTER" \
-    | egrep -v "(GPBDictionary|GPBArray)" -
+    test | xcpretty
diff --git a/src/php/README.md b/src/php/README.md
index f08541f16cf3783cdf9fa8ce51aa264126bc72fa..f9f93ba8159c093cecc83cf9a520566ac14621d7 100644
--- a/src/php/README.md
+++ b/src/php/README.md
@@ -1,5 +1,5 @@
 
-#Overview
+# Overview
 
 This directory contains source code for PHP implementation of gRPC layered on
 shared C library.
diff --git a/src/php/lib/Grpc/AbstractCall.php b/src/php/lib/Grpc/AbstractCall.php
index 40387abdc0727c7d793fb66cf5a667f33c663222..a59bfa3ba38d5cd628a4f3fd165e522f8dbdaa4b 100644
--- a/src/php/lib/Grpc/AbstractCall.php
+++ b/src/php/lib/Grpc/AbstractCall.php
@@ -131,6 +131,8 @@ abstract class AbstractCall
         // Proto3 implementation
         if (method_exists($data, 'encode')) {
             return $data->encode();
+        } elseif (method_exists($data, 'serializeToString')) {
+            return $data->serializeToString();
         }
 
         // Protobuf-PHP implementation
@@ -154,7 +156,11 @@ abstract class AbstractCall
         if (is_array($this->deserialize)) {
             list($className, $deserializeFunc) = $this->deserialize;
             $obj = new $className();
-            $obj->$deserializeFunc($value);
+            if (method_exists($obj, $deserializeFunc)) {
+                $obj->$deserializeFunc($value);
+            } else {
+                $obj->mergeFromString($value);
+            }
 
             return $obj;
         }
diff --git a/src/php/tests/unit_tests/ServerTest.php b/src/php/tests/unit_tests/ServerTest.php
index 5f40202f182d52f8f39291f5210e899e2d70bafc..3e7c01f20e2bd35440ba791692cfbcab8d866f1a 100644
--- a/src/php/tests/unit_tests/ServerTest.php
+++ b/src/php/tests/unit_tests/ServerTest.php
@@ -69,7 +69,7 @@ class ServerTest extends PHPUnit_Framework_TestCase
         $this->server = new Grpc\Server();
         $port = $this->server->addHttp2Port('0.0.0.0:0');
         $this->server->start();
-        $channel = new Grpc\Channel('localhost:' . $port,
+        $channel = new Grpc\Channel('localhost:'.$port,
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
 
         $deadline = Grpc\Timeval::infFuture();
diff --git a/src/python/grpcio/grpc/__init__.py b/src/python/grpcio/grpc/__init__.py
index a4481b2ac35ecb64e0de669cd357b734f51e884a..4960df3be9fe48bac2fcbf4eebe8963429d88412 100644
--- a/src/python/grpcio/grpc/__init__.py
+++ b/src/python/grpcio/grpc/__init__.py
@@ -1273,7 +1273,10 @@ def secure_channel(target, credentials, options=None):
                             credentials._credentials)
 
 
-def server(thread_pool, handlers=None, options=None):
+def server(thread_pool,
+           handlers=None,
+           options=None,
+           maximum_concurrent_rpcs=None):
     """Creates a Server with which RPCs can be serviced.
 
   Args:
@@ -1286,13 +1289,17 @@ def server(thread_pool, handlers=None, options=None):
       returned Server is started.
     options: A sequence of string-value pairs according to which to configure
       the created server.
+    maximum_concurrent_rpcs: The maximum number of concurrent RPCs this server
+      will service before returning status RESOURCE_EXHAUSTED, or None to
+      indicate no limit.
 
   Returns:
     A Server with which RPCs can be serviced.
   """
     from grpc import _server  # pylint: disable=cyclic-import
     return _server.Server(thread_pool, () if handlers is None else handlers, ()
-                          if options is None else options)
+                          if options is None else options,
+                          maximum_concurrent_rpcs)
 
 
 ###################################  __all__  #################################
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/security.pxd.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/security.pxd.pxi
index 3a952ca309aa9c40ed3d089b97b9ad9226d4b50a..9915b0ed1abbad943f580203a829ae776b4a0f7f 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/security.pxd.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/security.pxd.pxi
@@ -29,4 +29,4 @@
 
 
 cdef grpc_ssl_roots_override_result ssl_roots_override_callback(
-    char **pem_root_certs) with gil
+    char **pem_root_certs) nogil
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/security.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/security.pyx.pxi
index 20fc1c5fce78560ee055a8eef7cadcb481304279..357b0330d5ce7c9295f74d298dbed33c8de79c4d 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/security.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/security.pyx.pxi
@@ -33,12 +33,14 @@ import pkg_resources
 
 
 cdef grpc_ssl_roots_override_result ssl_roots_override_callback(
-    char **pem_root_certs) with gil:
-  temporary_pem_root_certs = pkg_resources.resource_string(
-      __name__.rstrip('.cygrpc'), '_credentials/roots.pem')
-  pem_root_certs[0] = <char *>gpr_malloc(len(temporary_pem_root_certs) + 1)
-  memcpy(
-      pem_root_certs[0], <char *>temporary_pem_root_certs,
-      len(temporary_pem_root_certs))
-  pem_root_certs[0][len(temporary_pem_root_certs)] = '\0'
+    char **pem_root_certs) nogil:
+  with gil:
+    temporary_pem_root_certs = pkg_resources.resource_string(
+        __name__.rstrip('.cygrpc'), '_credentials/roots.pem')
+    pem_root_certs[0] = <char *>gpr_malloc(len(temporary_pem_root_certs) + 1)
+    memcpy(
+        pem_root_certs[0], <char *>temporary_pem_root_certs,
+        len(temporary_pem_root_certs))
+    pem_root_certs[0][len(temporary_pem_root_certs)] = '\0'
+
   return GRPC_SSL_ROOTS_OVERRIDE_OK
diff --git a/src/python/grpcio/grpc/_cython/cygrpc.pyx b/src/python/grpcio/grpc/_cython/cygrpc.pyx
index e1bd046a1a5e72035b5c5efc05defc583bfd6bf1..274b5f1b8ac2cd26ad3a2553689b3a957050ef3c 100644
--- a/src/python/grpcio/grpc/_cython/cygrpc.pyx
+++ b/src/python/grpcio/grpc/_cython/cygrpc.pyx
@@ -47,14 +47,14 @@ include "_cygrpc/server.pyx.pxi"
 #
 # initialize gRPC
 #
-
-
 cdef extern from "Python.h":
 
-  int Py_AtExit(void(*func)())
-
+  int PyEval_InitThreads()
 
-def _initialize():
+cdef _initialize():
+  # We have Python callbacks called by c-core threads, this ensures the GIL
+  # is initialized.
+  PyEval_InitThreads()
   grpc_set_ssl_roots_override_callback(
           <grpc_ssl_roots_override_callback>ssl_roots_override_callback)
 
diff --git a/src/python/grpcio/grpc/_server.py b/src/python/grpcio/grpc/_server.py
index 84e096d4c048f43a7dcdb608d448b869c64a7b3d..47838c2c986c2cee2cb8fae735cf13292ee10b45 100644
--- a/src/python/grpcio/grpc/_server.py
+++ b/src/python/grpcio/grpc/_server.py
@@ -504,37 +504,37 @@ def _stream_response_in_pool(rpc_event, state, behavior, argument_thunk,
 def _handle_unary_unary(rpc_event, state, method_handler, thread_pool):
     unary_request = _unary_request(rpc_event, state,
                                    method_handler.request_deserializer)
-    thread_pool.submit(_unary_response_in_pool, rpc_event, state,
-                       method_handler.unary_unary, unary_request,
-                       method_handler.request_deserializer,
-                       method_handler.response_serializer)
+    return thread_pool.submit(_unary_response_in_pool, rpc_event, state,
+                              method_handler.unary_unary, unary_request,
+                              method_handler.request_deserializer,
+                              method_handler.response_serializer)
 
 
 def _handle_unary_stream(rpc_event, state, method_handler, thread_pool):
     unary_request = _unary_request(rpc_event, state,
                                    method_handler.request_deserializer)
-    thread_pool.submit(_stream_response_in_pool, rpc_event, state,
-                       method_handler.unary_stream, unary_request,
-                       method_handler.request_deserializer,
-                       method_handler.response_serializer)
+    return thread_pool.submit(_stream_response_in_pool, rpc_event, state,
+                              method_handler.unary_stream, unary_request,
+                              method_handler.request_deserializer,
+                              method_handler.response_serializer)
 
 
 def _handle_stream_unary(rpc_event, state, method_handler, thread_pool):
     request_iterator = _RequestIterator(state, rpc_event.operation_call,
                                         method_handler.request_deserializer)
-    thread_pool.submit(_unary_response_in_pool, rpc_event, state,
-                       method_handler.stream_unary, lambda: request_iterator,
-                       method_handler.request_deserializer,
-                       method_handler.response_serializer)
+    return thread_pool.submit(
+        _unary_response_in_pool, rpc_event, state, method_handler.stream_unary,
+        lambda: request_iterator, method_handler.request_deserializer,
+        method_handler.response_serializer)
 
 
 def _handle_stream_stream(rpc_event, state, method_handler, thread_pool):
     request_iterator = _RequestIterator(state, rpc_event.operation_call,
                                         method_handler.request_deserializer)
-    thread_pool.submit(_stream_response_in_pool, rpc_event, state,
-                       method_handler.stream_stream, lambda: request_iterator,
-                       method_handler.request_deserializer,
-                       method_handler.response_serializer)
+    return thread_pool.submit(
+        _stream_response_in_pool, rpc_event, state,
+        method_handler.stream_stream, lambda: request_iterator,
+        method_handler.request_deserializer, method_handler.response_serializer)
 
 
 def _find_method_handler(rpc_event, generic_handlers):
@@ -549,13 +549,12 @@ def _find_method_handler(rpc_event, generic_handlers):
         return None
 
 
-def _handle_unrecognized_method(rpc_event):
+def _reject_rpc(rpc_event, status, details):
     operations = (cygrpc.operation_send_initial_metadata(_common.EMPTY_METADATA,
                                                          _EMPTY_FLAGS),
                   cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS),
                   cygrpc.operation_send_status_from_server(
-                      _common.EMPTY_METADATA, cygrpc.StatusCode.unimplemented,
-                      b'Method not found!', _EMPTY_FLAGS),)
+                      _common.EMPTY_METADATA, status, details, _EMPTY_FLAGS),)
     rpc_state = _RPCState()
     rpc_event.operation_call.start_server_batch(
         operations, lambda ignored_event: (rpc_state, (),))
@@ -572,33 +571,37 @@ def _handle_with_method_handler(rpc_event, method_handler, thread_pool):
         state.due.add(_RECEIVE_CLOSE_ON_SERVER_TOKEN)
         if method_handler.request_streaming:
             if method_handler.response_streaming:
-                _handle_stream_stream(rpc_event, state, method_handler,
-                                      thread_pool)
+                return state, _handle_stream_stream(rpc_event, state,
+                                                    method_handler, thread_pool)
             else:
-                _handle_stream_unary(rpc_event, state, method_handler,
-                                     thread_pool)
+                return state, _handle_stream_unary(rpc_event, state,
+                                                   method_handler, thread_pool)
         else:
             if method_handler.response_streaming:
-                _handle_unary_stream(rpc_event, state, method_handler,
-                                     thread_pool)
+                return state, _handle_unary_stream(rpc_event, state,
+                                                   method_handler, thread_pool)
             else:
-                _handle_unary_unary(rpc_event, state, method_handler,
-                                    thread_pool)
-        return state
+                return state, _handle_unary_unary(rpc_event, state,
+                                                  method_handler, thread_pool)
 
 
-def _handle_call(rpc_event, generic_handlers, thread_pool):
+def _handle_call(rpc_event, generic_handlers, thread_pool,
+                 concurrency_exceeded):
     if not rpc_event.success:
-        return None
+        return None, None
     if rpc_event.request_call_details.method is not None:
         method_handler = _find_method_handler(rpc_event, generic_handlers)
         if method_handler is None:
-            return _handle_unrecognized_method(rpc_event)
+            return _reject_rpc(rpc_event, cygrpc.StatusCode.unimplemented,
+                               b'Method not found!'), None
+        elif concurrency_exceeded:
+            return _reject_rpc(rpc_event, cygrpc.StatusCode.resource_exhausted,
+                               b'Concurrent RPC limit exceeded!'), None
         else:
             return _handle_with_method_handler(rpc_event, method_handler,
                                                thread_pool)
     else:
-        return None
+        return None, None
 
 
 @enum.unique
@@ -610,7 +613,8 @@ class _ServerStage(enum.Enum):
 
 class _ServerState(object):
 
-    def __init__(self, completion_queue, server, generic_handlers, thread_pool):
+    def __init__(self, completion_queue, server, generic_handlers, thread_pool,
+                 maximum_concurrent_rpcs):
         self.lock = threading.Lock()
         self.completion_queue = completion_queue
         self.server = server
@@ -618,6 +622,8 @@ class _ServerState(object):
         self.thread_pool = thread_pool
         self.stage = _ServerStage.STOPPED
         self.shutdown_events = None
+        self.maximum_concurrent_rpcs = maximum_concurrent_rpcs
+        self.active_rpc_count = 0
 
         # TODO(https://github.com/grpc/grpc/issues/6597): eliminate these fields.
         self.rpc_states = set()
@@ -657,6 +663,11 @@ def _stop_serving(state):
         return False
 
 
+def _on_call_completed(state):
+    with state.lock:
+        state.active_rpc_count -= 1
+
+
 def _serve(state):
     while True:
         event = state.completion_queue.poll()
@@ -668,10 +679,18 @@ def _serve(state):
         elif event.tag is _REQUEST_CALL_TAG:
             with state.lock:
                 state.due.remove(_REQUEST_CALL_TAG)
-                rpc_state = _handle_call(event, state.generic_handlers,
-                                         state.thread_pool)
+                concurrency_exceeded = (
+                    state.maximum_concurrent_rpcs is not None and
+                    state.active_rpc_count >= state.maximum_concurrent_rpcs)
+                rpc_state, rpc_future = _handle_call(
+                    event, state.generic_handlers, state.thread_pool,
+                    concurrency_exceeded)
                 if rpc_state is not None:
                     state.rpc_states.add(rpc_state)
+                if rpc_future is not None:
+                    state.active_rpc_count += 1
+                    rpc_future.add_done_callback(
+                        lambda unused_future: _on_call_completed(state))
                 if state.stage is _ServerStage.STARTED:
                     _request_call(state)
                 elif _stop_serving(state):
@@ -749,12 +768,13 @@ def _start(state):
 
 class Server(grpc.Server):
 
-    def __init__(self, thread_pool, generic_handlers, options):
+    def __init__(self, thread_pool, generic_handlers, options,
+                 maximum_concurrent_rpcs):
         completion_queue = cygrpc.CompletionQueue()
         server = cygrpc.Server(_common.channel_args(options))
         server.register_completion_queue(completion_queue)
         self._state = _ServerState(completion_queue, server, generic_handlers,
-                                   thread_pool)
+                                   thread_pool, maximum_concurrent_rpcs)
 
     def add_generic_rpc_handlers(self, generic_rpc_handlers):
         _add_generic_handlers(self._state, generic_rpc_handlers)
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index cb6ca34dc68cab8428673d18290d42f684c66c4f..ed8793b019f75420931fe69942f15caf8621cd04 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -88,6 +88,7 @@ CORE_SOURCE_FILES = [
   '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/max_age_filter.c',
   'src/core/lib/channel/message_size_filter.c',
   'src/core/lib/compression/compression.c',
   'src/core/lib/compression/message_compress.c',
@@ -124,6 +125,7 @@ CORE_SOURCE_FILES = [
   'src/core/lib/iomgr/resolve_address_windows.c',
   'src/core/lib/iomgr/resource_quota.c',
   'src/core/lib/iomgr/sockaddr_utils.c',
+  'src/core/lib/iomgr/socket_factory_posix.c',
   'src/core/lib/iomgr/socket_mutator.c',
   'src/core/lib/iomgr/socket_utils_common_posix.c',
   'src/core/lib/iomgr/socket_utils_linux.c',
@@ -161,6 +163,7 @@ CORE_SOURCE_FILES = [
   'src/core/lib/json/json_reader.c',
   'src/core/lib/json/json_string.c',
   'src/core/lib/json/json_writer.c',
+  'src/core/lib/slice/b64.c',
   'src/core/lib/slice/percent_encoding.c',
   'src/core/lib/slice/slice.c',
   'src/core/lib/slice/slice_buffer.c',
@@ -179,6 +182,7 @@ CORE_SOURCE_FILES = [
   'src/core/lib/surface/channel_ping.c',
   'src/core/lib/surface/channel_stack_type.c',
   'src/core/lib/surface/completion_queue.c',
+  'src/core/lib/surface/completion_queue_factory.c',
   'src/core/lib/surface/event_string.c',
   'src/core/lib/surface/lame_client.c',
   'src/core/lib/surface/metadata_array.c',
@@ -242,12 +246,11 @@ CORE_SOURCE_FILES = [
   'src/core/lib/security/transport/security_handshaker.c',
   'src/core/lib/security/transport/server_auth_filter.c',
   'src/core/lib/security/transport/tsi_error.c',
-  'src/core/lib/security/util/b64.c',
   'src/core/lib/security/util/json_util.c',
   'src/core/lib/surface/init_secure.c',
-  'src/core/lib/tsi/fake_transport_security.c',
-  'src/core/lib/tsi/ssl_transport_security.c',
-  'src/core/lib/tsi/transport_security.c',
+  'src/core/tsi/fake_transport_security.c',
+  'src/core/tsi/ssl_transport_security.c',
+  'src/core/tsi/transport_security.c',
   'src/core/ext/transport/chttp2/server/chttp2_server.c',
   'src/core/ext/transport/chttp2/client/secure/secure_channel_create.c',
   'src/core/ext/client_channel/channel_connectivity.c',
@@ -284,6 +287,9 @@ CORE_SOURCE_FILES = [
   'third_party/nanopb/pb_encode.c',
   'src/core/ext/lb_policy/pick_first/pick_first.c',
   'src/core/ext/lb_policy/round_robin/round_robin.c',
+  'src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c',
+  'src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c',
+  'src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c',
   'src/core/ext/resolver/dns/native/dns_resolver.c',
   'src/core/ext/resolver/sockaddr/sockaddr_resolver.c',
   'src/core/ext/load_reporting/load_reporting.c',
@@ -622,4 +628,53 @@ CORE_SOURCE_FILES = [
   'third_party/zlib/trees.c',
   'third_party/zlib/uncompr.c',
   'third_party/zlib/zutil.c',
+  'third_party/cares/cares/ares__close_sockets.c',
+  'third_party/cares/cares/ares__get_hostent.c',
+  'third_party/cares/cares/ares__read_line.c',
+  'third_party/cares/cares/ares__timeval.c',
+  'third_party/cares/cares/ares_cancel.c',
+  'third_party/cares/cares/ares_create_query.c',
+  'third_party/cares/cares/ares_data.c',
+  'third_party/cares/cares/ares_destroy.c',
+  'third_party/cares/cares/ares_expand_name.c',
+  'third_party/cares/cares/ares_expand_string.c',
+  'third_party/cares/cares/ares_fds.c',
+  'third_party/cares/cares/ares_free_hostent.c',
+  'third_party/cares/cares/ares_free_string.c',
+  'third_party/cares/cares/ares_getenv.c',
+  'third_party/cares/cares/ares_gethostbyaddr.c',
+  'third_party/cares/cares/ares_gethostbyname.c',
+  'third_party/cares/cares/ares_getnameinfo.c',
+  'third_party/cares/cares/ares_getopt.c',
+  'third_party/cares/cares/ares_getsock.c',
+  'third_party/cares/cares/ares_init.c',
+  'third_party/cares/cares/ares_library_init.c',
+  'third_party/cares/cares/ares_llist.c',
+  'third_party/cares/cares/ares_mkquery.c',
+  'third_party/cares/cares/ares_nowarn.c',
+  'third_party/cares/cares/ares_options.c',
+  'third_party/cares/cares/ares_parse_a_reply.c',
+  'third_party/cares/cares/ares_parse_aaaa_reply.c',
+  'third_party/cares/cares/ares_parse_mx_reply.c',
+  'third_party/cares/cares/ares_parse_naptr_reply.c',
+  'third_party/cares/cares/ares_parse_ns_reply.c',
+  'third_party/cares/cares/ares_parse_ptr_reply.c',
+  'third_party/cares/cares/ares_parse_soa_reply.c',
+  'third_party/cares/cares/ares_parse_srv_reply.c',
+  'third_party/cares/cares/ares_parse_txt_reply.c',
+  'third_party/cares/cares/ares_platform.c',
+  'third_party/cares/cares/ares_process.c',
+  'third_party/cares/cares/ares_query.c',
+  'third_party/cares/cares/ares_search.c',
+  'third_party/cares/cares/ares_send.c',
+  'third_party/cares/cares/ares_strcasecmp.c',
+  'third_party/cares/cares/ares_strdup.c',
+  'third_party/cares/cares/ares_strerror.c',
+  'third_party/cares/cares/ares_timeout.c',
+  'third_party/cares/cares/ares_version.c',
+  'third_party/cares/cares/ares_writev.c',
+  'third_party/cares/cares/bitncmp.c',
+  'third_party/cares/cares/inet_net_pton.c',
+  'third_party/cares/cares/inet_ntop.c',
+  'third_party/cares/cares/windows_port.c',
 ]
diff --git a/src/python/grpcio_health_checking/setup.py b/src/python/grpcio_health_checking/setup.py
index 52ee98a2d5b5359255e07b35bcd6fe02595d4b4d..17bb3ab616ed971ad946c96d2c5463c22330598a 100644
--- a/src/python/grpcio_health_checking/setup.py
+++ b/src/python/grpcio_health_checking/setup.py
@@ -59,6 +59,10 @@ COMMAND_CLASS = {
 setuptools.setup(
     name='grpcio-health-checking',
     version=grpc_version.VERSION,
+    description='Standard Health Checking Service for gRPC',
+    author='The gRPC Authors',
+    author_email='grpc-io@googlegroups.com',
+    url='http://www.grpc.io',
     license='3-clause BSD',
     package_dir=PACKAGE_DIRECTORIES,
     packages=setuptools.find_packages('.'),
diff --git a/src/python/grpcio_reflection/setup.py b/src/python/grpcio_reflection/setup.py
index e85092db570d894d6fb5fa0734955e785b7b6cae..e6cf54745e2d945f492bad31c25f55e215577029 100644
--- a/src/python/grpcio_reflection/setup.py
+++ b/src/python/grpcio_reflection/setup.py
@@ -60,6 +60,10 @@ setuptools.setup(
     name='grpcio-reflection',
     version=grpc_version.VERSION,
     license='3-clause BSD',
+    description='Standard Protobuf Reflection Service for gRPC',
+    author='The gRPC Authors',
+    author_email='grpc-io@googlegroups.com',
+    url='http://www.grpc.io',
     package_dir=PACKAGE_DIRECTORIES,
     packages=setuptools.find_packages('.'),
     install_requires=INSTALL_REQUIRES,
diff --git a/src/python/grpcio_tests/tests/tests.json b/src/python/grpcio_tests/tests/tests.json
index 70d965d3ca8e232ff58be15b82739f1aafe7d2ad..f750b0510220ee7078896ba7f88503617c1cdbb5 100644
--- a/src/python/grpcio_tests/tests/tests.json
+++ b/src/python/grpcio_tests/tests/tests.json
@@ -31,6 +31,7 @@
   "unit._invocation_defects_test.InvocationDefectsTest",
   "unit._metadata_code_details_test.MetadataCodeDetailsTest",
   "unit._metadata_test.MetadataTest",
+  "unit._resource_exhausted_test.ResourceExhaustedTest",
   "unit._rpc_test.RPCTest",
   "unit._sanity._sanity_test.Sanity",
   "unit._thread_cleanup_test.CleanupThreadTest",
diff --git a/src/python/grpcio_tests/tests/unit/_resource_exhausted_test.py b/src/python/grpcio_tests/tests/unit/_resource_exhausted_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..88c82b55414b60b386457c528d4df1d4485139fe
--- /dev/null
+++ b/src/python/grpcio_tests/tests/unit/_resource_exhausted_test.py
@@ -0,0 +1,270 @@
+# Copyright 2017, 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.
+"""Tests server responding with RESOURCE_EXHAUSTED."""
+
+import threading
+import unittest
+
+import grpc
+from grpc import _channel
+from grpc.framework.foundation import logging_pool
+
+from tests.unit import test_common
+from tests.unit.framework.common import test_constants
+
+_REQUEST = b'\x00\x00\x00'
+_RESPONSE = b'\x00\x00\x00'
+
+_UNARY_UNARY = '/test/UnaryUnary'
+_UNARY_STREAM = '/test/UnaryStream'
+_STREAM_UNARY = '/test/StreamUnary'
+_STREAM_STREAM = '/test/StreamStream'
+
+
+class _TestTrigger(object):
+
+    def __init__(self, total_call_count):
+        self._total_call_count = total_call_count
+        self._pending_calls = 0
+        self._triggered = False
+        self._finish_condition = threading.Condition()
+        self._start_condition = threading.Condition()
+
+    # Wait for all calls be be blocked in their handler
+    def await_calls(self):
+        with self._start_condition:
+            while self._pending_calls < self._total_call_count:
+                self._start_condition.wait()
+
+    # Block in a response handler and wait for a trigger
+    def await_trigger(self):
+        with self._start_condition:
+            self._pending_calls += 1
+            self._start_condition.notify()
+
+        with self._finish_condition:
+            if not self._triggered:
+                self._finish_condition.wait()
+
+    # Finish all response handlers
+    def trigger(self):
+        with self._finish_condition:
+            self._triggered = True
+            self._finish_condition.notify_all()
+
+
+def handle_unary_unary(trigger, request, servicer_context):
+    trigger.await_trigger()
+    return _RESPONSE
+
+
+def handle_unary_stream(trigger, request, servicer_context):
+    trigger.await_trigger()
+    for _ in range(test_constants.STREAM_LENGTH):
+        yield _RESPONSE
+
+
+def handle_stream_unary(trigger, request_iterator, servicer_context):
+    trigger.await_trigger()
+    # TODO(issue:#6891) We should be able to remove this loop
+    for request in request_iterator:
+        pass
+    return _RESPONSE
+
+
+def handle_stream_stream(trigger, request_iterator, servicer_context):
+    trigger.await_trigger()
+    # TODO(issue:#6891) We should be able to remove this loop,
+    # and replace with return; yield
+    for request in request_iterator:
+        yield _RESPONSE
+
+
+class _MethodHandler(grpc.RpcMethodHandler):
+
+    def __init__(self, trigger, request_streaming, response_streaming):
+        self.request_streaming = request_streaming
+        self.response_streaming = response_streaming
+        self.request_deserializer = None
+        self.response_serializer = None
+        self.unary_unary = None
+        self.unary_stream = None
+        self.stream_unary = None
+        self.stream_stream = None
+        if self.request_streaming and self.response_streaming:
+            self.stream_stream = (
+                lambda x, y: handle_stream_stream(trigger, x, y))
+        elif self.request_streaming:
+            self.stream_unary = lambda x, y: handle_stream_unary(trigger, x, y)
+        elif self.response_streaming:
+            self.unary_stream = lambda x, y: handle_unary_stream(trigger, x, y)
+        else:
+            self.unary_unary = lambda x, y: handle_unary_unary(trigger, x, y)
+
+
+class _GenericHandler(grpc.GenericRpcHandler):
+
+    def __init__(self, trigger):
+        self._trigger = trigger
+
+    def service(self, handler_call_details):
+        if handler_call_details.method == _UNARY_UNARY:
+            return _MethodHandler(self._trigger, False, False)
+        elif handler_call_details.method == _UNARY_STREAM:
+            return _MethodHandler(self._trigger, False, True)
+        elif handler_call_details.method == _STREAM_UNARY:
+            return _MethodHandler(self._trigger, True, False)
+        elif handler_call_details.method == _STREAM_STREAM:
+            return _MethodHandler(self._trigger, True, True)
+        else:
+            return None
+
+
+class ResourceExhaustedTest(unittest.TestCase):
+
+    def setUp(self):
+        self._server_pool = logging_pool.pool(test_constants.THREAD_CONCURRENCY)
+        self._trigger = _TestTrigger(test_constants.THREAD_CONCURRENCY)
+        self._server = grpc.server(
+            self._server_pool,
+            handlers=(_GenericHandler(self._trigger),),
+            maximum_concurrent_rpcs=test_constants.THREAD_CONCURRENCY)
+        port = self._server.add_insecure_port('[::]:0')
+        self._server.start()
+        self._channel = grpc.insecure_channel('localhost:%d' % port)
+
+    def tearDown(self):
+        self._server.stop(0)
+
+    def testUnaryUnary(self):
+        multi_callable = self._channel.unary_unary(_UNARY_UNARY)
+        futures = []
+        for _ in range(test_constants.THREAD_CONCURRENCY):
+            futures.append(multi_callable.future(_REQUEST))
+
+        self._trigger.await_calls()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            multi_callable(_REQUEST)
+
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         exception_context.exception.code())
+
+        future_exception = multi_callable.future(_REQUEST)
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         future_exception.exception().code())
+
+        self._trigger.trigger()
+        for future in futures:
+            self.assertEqual(_RESPONSE, future.result())
+
+        # Ensure a new request can be handled
+        self.assertEqual(_RESPONSE, multi_callable(_REQUEST))
+
+    def testUnaryStream(self):
+        multi_callable = self._channel.unary_stream(_UNARY_STREAM)
+        calls = []
+        for _ in range(test_constants.THREAD_CONCURRENCY):
+            calls.append(multi_callable(_REQUEST))
+
+        self._trigger.await_calls()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(multi_callable(_REQUEST))
+
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         exception_context.exception.code())
+
+        self._trigger.trigger()
+
+        for call in calls:
+            for response in call:
+                self.assertEqual(_RESPONSE, response)
+
+        # Ensure a new request can be handled
+        new_call = multi_callable(_REQUEST)
+        for response in new_call:
+            self.assertEqual(_RESPONSE, response)
+
+    def testStreamUnary(self):
+        multi_callable = self._channel.stream_unary(_STREAM_UNARY)
+        futures = []
+        request = iter([_REQUEST] * test_constants.STREAM_LENGTH)
+        for _ in range(test_constants.THREAD_CONCURRENCY):
+            futures.append(multi_callable.future(request))
+
+        self._trigger.await_calls()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            multi_callable(request)
+
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         exception_context.exception.code())
+
+        future_exception = multi_callable.future(request)
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         future_exception.exception().code())
+
+        self._trigger.trigger()
+
+        for future in futures:
+            self.assertEqual(_RESPONSE, future.result())
+
+        # Ensure a new request can be handled
+        self.assertEqual(_RESPONSE, multi_callable(request))
+
+    def testStreamStream(self):
+        multi_callable = self._channel.stream_stream(_STREAM_STREAM)
+        calls = []
+        request = iter([_REQUEST] * test_constants.STREAM_LENGTH)
+        for _ in range(test_constants.THREAD_CONCURRENCY):
+            calls.append(multi_callable(request))
+
+        self._trigger.await_calls()
+
+        with self.assertRaises(grpc.RpcError) as exception_context:
+            next(multi_callable(request))
+
+        self.assertEqual(grpc.StatusCode.RESOURCE_EXHAUSTED,
+                         exception_context.exception.code())
+
+        self._trigger.trigger()
+
+        for call in calls:
+            for response in call:
+                self.assertEqual(_RESPONSE, response)
+
+        # Ensure a new request can be handled
+        new_call = multi_callable(request)
+        for response in new_call:
+            self.assertEqual(_RESPONSE, response)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/src/ruby/.rubocop.yml b/src/ruby/.rubocop.yml
index 0f61ccfa812406ed193f39327cae64da241c7ac8..7174f3b15af62999cfa08aa2a4302ca315d5117a 100644
--- a/src/ruby/.rubocop.yml
+++ b/src/ruby/.rubocop.yml
@@ -9,6 +9,7 @@ AllCops:
     - 'bin/math_services_pb.rb'
     - 'pb/grpc/health/v1/*'
     - 'pb/test/**/*'
+    - 'end2end/lib/*'
 
 Metrics/CyclomaticComplexity:
   Max: 9
diff --git a/src/ruby/end2end/README.md b/src/ruby/end2end/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..ea5ab6d4bcb6e5e9ea5afd802a94fb0a62743dfe
--- /dev/null
+++ b/src/ruby/end2end/README.md
@@ -0,0 +1,18 @@
+This directory contains some grpc-ruby end to end tests.
+
+Each test here involves two files: a "driver" and a "client". For example,
+the "channel_closing" test involves channel_closing_driver.rb
+and channel_closing_client.rb.
+
+Typically, the "driver" will start up a simple "echo" server, and then
+spawn a client. It gives the client the address of the "echo" server as
+well as an address to listen on for control rpcs. Depending on the test, the
+client usually starts up a "ClientControl" grpc server for the driver to
+interact with (the driver can tell the client process to do strange things at
+different times, depending on the test).
+
+So far these tests are mostly useful for testing process-shutdown related
+situations, since the client's run in separate processes.
+
+These tests are invoked through the "tools/run_tests/run_tests.py" script (the
+Rakefile doesn't start these).
diff --git a/src/ruby/end2end/channel_closing_client.rb b/src/ruby/end2end/channel_closing_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..84497973607a46ef1e20bf30b75f2b03d84c172e
--- /dev/null
+++ b/src/ruby/end2end/channel_closing_client.rb
@@ -0,0 +1,84 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+# Calls '#close' on a Channel when "shutdown" called. This tries to
+# trigger a hang or crash bug by closing a channel actively being watched
+class ChannelClosingClientController < ClientControl::ClientController::Service
+  def initialize(ch)
+    @ch = ch
+  end
+
+  def shutdown(_, _)
+    @ch.close
+    ClientControl::Void.new
+  end
+end
+
+def main
+  client_control_port = ''
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do |p|
+      client_control_port = p
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  ch = GRPC::Core::Channel.new("localhost:#{server_port}", {},
+                               :this_channel_is_insecure)
+
+  srv = GRPC::RpcServer.new
+  thd = Thread.new do
+    srv.add_http2_port("0.0.0.0:#{client_control_port}", :this_port_is_insecure)
+    srv.handle(ChannelClosingClientController.new(ch))
+    srv.run
+  end
+
+  # this should break out with an exception once the channel is closed
+  loop do
+    begin
+      state = ch.connectivity_state(true)
+      ch.watch_connectivity_state(state, Time.now + 360)
+    rescue RuntimeError => e
+      STDERR.puts "(expected) error occurred: #{e.inspect}"
+      break
+    end
+  end
+
+  srv.stop
+  thd.join
+end
+
+main
diff --git a/src/ruby/end2end/channel_closing_driver.rb b/src/ruby/end2end/channel_closing_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..43e2fe8cbbdcefbf360e174565afca5cecfa59df
--- /dev/null
+++ b/src/ruby/end2end/channel_closing_driver.rb
@@ -0,0 +1,67 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# make sure that the client doesn't hang when channel is closed
+# explictly while it's used
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new
+  server_port = server_runner.run
+
+  sleep 1
+
+  STDERR.puts 'start client'
+  control_stub, client_pid = start_client('channel_closing_client.rb',
+                                          server_port)
+
+  sleep 3
+
+  begin
+    Timeout.timeout(10) do
+      control_stub.shutdown(ClientControl::Void.new)
+      Process.wait(client_pid)
+    end
+  rescue Timeout::Error
+    STDERR.puts "timeout wait for client pid #{client_pid}"
+    Process.kill('SIGKILL', client_pid)
+    Process.wait(client_pid)
+    STDERR.puts 'killed client child'
+    raise 'Timed out waiting for client process. It likely hangs when a ' \
+      'channel is closed while connectivity is watched'
+  end
+
+  server_runner.stop
+end
+
+main
diff --git a/src/ruby/end2end/channel_state_client.rb b/src/ruby/end2end/channel_state_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..08c21bbb8e83d667439a70357f6eead99ac27f07
--- /dev/null
+++ b/src/ruby/end2end/channel_state_client.rb
@@ -0,0 +1,54 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+def main
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do
+      STDERR.puts 'client_control_port ignored'
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  ch = GRPC::Core::Channel.new("localhost:#{server_port}", {},
+                               :this_channel_is_insecure)
+
+  loop do
+    state = ch.connectivity_state
+    ch.watch_connectivity_state(state, Time.now + 360)
+  end
+end
+
+main
diff --git a/src/ruby/end2end/channel_state_driver.rb b/src/ruby/end2end/channel_state_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..c3184bf939259262f1af3946afb4a0a4850b5282
--- /dev/null
+++ b/src/ruby/end2end/channel_state_driver.rb
@@ -0,0 +1,64 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# make sure that the client doesn't hang when process ended abruptly
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new
+  server_port = server_runner.run
+
+  sleep 1
+
+  STDERR.puts 'start client'
+  _, client_pid = start_client('channel_state_client.rb', server_port)
+
+  sleep 3
+
+  Process.kill('SIGTERM', client_pid)
+
+  begin
+    Timeout.timeout(10) { Process.wait(client_pid) }
+  rescue Timeout::Error
+    STDERR.puts "timeout wait for client pid #{client_pid}"
+    Process.kill('SIGKILL', client_pid)
+    Process.wait(client_pid)
+    STDERR.puts 'killed client child'
+    raise 'Timed out waiting for client process. ' \
+           'It likely hangs when ended abruptly'
+  end
+
+  server_runner.stop
+end
+
+main
diff --git a/src/ruby/end2end/end2end_common.rb b/src/ruby/end2end/end2end_common.rb
new file mode 100755
index 0000000000000000000000000000000000000000..9534bb207875e4180ff17ec18bf2b26ece8b60a4
--- /dev/null
+++ b/src/ruby/end2end/end2end_common.rb
@@ -0,0 +1,109 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+protos_lib_dir = File.join(this_dir, 'lib')
+grpc_lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(grpc_lib_dir) unless $LOAD_PATH.include?(grpc_lib_dir)
+$LOAD_PATH.unshift(protos_lib_dir) unless $LOAD_PATH.include?(protos_lib_dir)
+$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
+
+require 'grpc'
+require 'echo_services_pb'
+require 'client_control_services_pb'
+require 'socket'
+require 'optparse'
+require 'thread'
+require 'timeout'
+require 'English' # see https://github.com/bbatsov/rubocop/issues/1747
+
+# GreeterServer is simple server that implements the Helloworld Greeter server.
+class EchoServerImpl < Echo::EchoServer::Service
+  # say_hello implements the SayHello rpc method.
+  def echo(echo_req, _)
+    Echo::EchoReply.new(response: echo_req.request)
+  end
+end
+
+# ServerRunner starts an "echo server" that test clients can make calls to
+class ServerRunner
+  def initialize
+  end
+
+  def run
+    @srv = GRPC::RpcServer.new
+    port = @srv.add_http2_port('0.0.0.0:0', :this_port_is_insecure)
+    @srv.handle(EchoServerImpl)
+
+    @thd = Thread.new do
+      @srv.run
+    end
+    @srv.wait_till_running
+    port
+  end
+
+  def stop
+    @srv.stop
+    @thd.join
+    fail 'server not stopped' unless @srv.stopped?
+  end
+end
+
+def start_client(client_main, server_port)
+  this_dir = File.expand_path(File.dirname(__FILE__))
+
+  tmp_server = TCPServer.new(0)
+  client_control_port = tmp_server.local_address.ip_port
+  tmp_server.close
+
+  client_path = File.join(this_dir, client_main)
+  client_pid = Process.spawn(RbConfig.ruby,
+                             client_path,
+                             "--client_control_port=#{client_control_port}",
+                             "--server_port=#{server_port}")
+  sleep 1
+  control_stub = ClientControl::ClientController::Stub.new(
+    "localhost:#{client_control_port}", :this_channel_is_insecure)
+  [control_stub, client_pid]
+end
+
+def cleanup(control_stub, client_pid, server_runner)
+  control_stub.shutdown(ClientControl::Void.new)
+  Process.wait(client_pid)
+
+  client_exit_code = $CHILD_STATUS
+
+  if client_exit_code != 0
+    fail "term sig test failure: client exit code: #{client_exit_code}"
+  end
+
+  server_runner.stop
+end
diff --git a/src/ruby/end2end/gen_protos.sh b/src/ruby/end2end/gen_protos.sh
new file mode 100644
index 0000000000000000000000000000000000000000..f78d9ad394a7a22fbff58f3bff0d529a8c2e5097
--- /dev/null
+++ b/src/ruby/end2end/gen_protos.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# 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.
+
+grpc_tools_ruby_protoc -I protos --ruby_out=lib --grpc_out=lib protos/echo.proto protos/client_control.proto
diff --git a/src/ruby/end2end/lib/client_control_pb.rb b/src/ruby/end2end/lib/client_control_pb.rb
new file mode 100644
index 0000000000000000000000000000000000000000..1a938f1b5ae928f9fa5ae868bd5c336d321a2884
--- /dev/null
+++ b/src/ruby/end2end/lib/client_control_pb.rb
@@ -0,0 +1,17 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: client_control.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_message "client_control.DoEchoRpcRequest" do
+    optional :request, :string, 1
+  end
+  add_message "client_control.Void" do
+  end
+end
+
+module ClientControl
+  DoEchoRpcRequest = Google::Protobuf::DescriptorPool.generated_pool.lookup("client_control.DoEchoRpcRequest").msgclass
+  Void = Google::Protobuf::DescriptorPool.generated_pool.lookup("client_control.Void").msgclass
+end
diff --git a/src/ruby/end2end/lib/client_control_services_pb.rb b/src/ruby/end2end/lib/client_control_services_pb.rb
new file mode 100644
index 0000000000000000000000000000000000000000..04b2291bc78fdb409a009c0210575eb944809db8
--- /dev/null
+++ b/src/ruby/end2end/lib/client_control_services_pb.rb
@@ -0,0 +1,53 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# Source: client_control.proto for package 'client_control'
+# Original file comments:
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+require 'grpc'
+require 'client_control_pb'
+
+module ClientControl
+  module ClientController
+    class Service
+
+      include GRPC::GenericService
+
+      self.marshal_class_method = :encode
+      self.unmarshal_class_method = :decode
+      self.service_name = 'client_control.ClientController'
+
+      rpc :DoEchoRpc, DoEchoRpcRequest, Void
+      rpc :Shutdown, Void, Void
+    end
+
+    Stub = Service.rpc_stub_class
+  end
+end
diff --git a/src/ruby/end2end/lib/echo_pb.rb b/src/ruby/end2end/lib/echo_pb.rb
new file mode 100644
index 0000000000000000000000000000000000000000..c62adc07534edd7c2795fdd8e5bb40d8dd7be991
--- /dev/null
+++ b/src/ruby/end2end/lib/echo_pb.rb
@@ -0,0 +1,18 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: echo.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_message "echo.EchoRequest" do
+    optional :request, :string, 1
+  end
+  add_message "echo.EchoReply" do
+    optional :response, :string, 1
+  end
+end
+
+module Echo
+  EchoRequest = Google::Protobuf::DescriptorPool.generated_pool.lookup("echo.EchoRequest").msgclass
+  EchoReply = Google::Protobuf::DescriptorPool.generated_pool.lookup("echo.EchoReply").msgclass
+end
diff --git a/src/ruby/end2end/lib/echo_services_pb.rb b/src/ruby/end2end/lib/echo_services_pb.rb
new file mode 100644
index 0000000000000000000000000000000000000000..c66e975bf32fb813627d7ba94313ce2c0508ee4e
--- /dev/null
+++ b/src/ruby/end2end/lib/echo_services_pb.rb
@@ -0,0 +1,52 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# Source: echo.proto for package 'echo'
+# Original file comments:
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+require 'grpc'
+require 'echo_pb'
+
+module Echo
+  module EchoServer
+    class Service
+
+      include GRPC::GenericService
+
+      self.marshal_class_method = :encode
+      self.unmarshal_class_method = :decode
+      self.service_name = 'echo.EchoServer'
+
+      rpc :Echo, EchoRequest, EchoReply
+    end
+
+    Stub = Service.rpc_stub_class
+  end
+end
diff --git a/src/ruby/end2end/protos/client_control.proto b/src/ruby/end2end/protos/client_control.proto
new file mode 100644
index 0000000000000000000000000000000000000000..f985bb486dcee99cc195f9640cd9e6732a9aa287
--- /dev/null
+++ b/src/ruby/end2end/protos/client_control.proto
@@ -0,0 +1,43 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package client_control;
+
+service ClientController {
+  rpc DoEchoRpc (DoEchoRpcRequest) returns (Void) {}
+  rpc Shutdown(Void) returns (Void) {}
+}
+
+message DoEchoRpcRequest {
+  string request = 1;
+}
+
+message Void{}
diff --git a/src/ruby/end2end/protos/echo.proto b/src/ruby/end2end/protos/echo.proto
new file mode 100644
index 0000000000000000000000000000000000000000..d47afef70f19b367a8f07332f1226ad76e062ccf
--- /dev/null
+++ b/src/ruby/end2end/protos/echo.proto
@@ -0,0 +1,46 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+
+package echo;
+
+service EchoServer {
+  rpc Echo (EchoRequest) returns (EchoReply) {}
+}
+
+// The request message containing the user's name.
+message EchoRequest {
+  string request = 1;
+}
+
+// The response message containing the greetings
+message EchoReply {
+  string response = 1;
+}
diff --git a/src/ruby/end2end/sig_handling_client.rb b/src/ruby/end2end/sig_handling_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..5b1e54718ec9191ead07e411cb1b5c28b1e83f7c
--- /dev/null
+++ b/src/ruby/end2end/sig_handling_client.rb
@@ -0,0 +1,89 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+# Test client. Sends RPC's as normal but process also has signal handlers
+class SigHandlingClientController < ClientControl::ClientController::Service
+  def initialize(srv, stub)
+    @srv = srv
+    @stub = stub
+  end
+
+  def do_echo_rpc(req, _)
+    response = @stub.echo(Echo::EchoRequest.new(request: req.request))
+    fail 'bad response' unless response.response == req.request
+    ClientControl::Void.new
+  end
+
+  def shutdown(_, _)
+    Thread.new do
+      # TODO(apolcyn) There is a race between stopping the
+      # server and the "shutdown" rpc completing,
+      # See if stop method on server can end active RPC cleanly, to
+      # avoid this sleep.
+      sleep 3
+      @srv.stop
+    end
+    ClientControl::Void.new
+  end
+end
+
+def main
+  client_control_port = ''
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do |p|
+      client_control_port = p
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  Signal.trap('TERM') do
+    STDERR.puts 'SIGTERM received'
+  end
+
+  Signal.trap('INT') do
+    STDERR.puts 'SIGINT received'
+  end
+
+  srv = GRPC::RpcServer.new
+  srv.add_http2_port("0.0.0.0:#{client_control_port}",
+                     :this_port_is_insecure)
+  stub = Echo::EchoServer::Stub.new("localhost:#{server_port}",
+                                    :this_channel_is_insecure)
+  srv.handle(SigHandlingClientController.new(srv, stub))
+  srv.run
+end
+
+main
diff --git a/src/ruby/end2end/sig_handling_driver.rb b/src/ruby/end2end/sig_handling_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..c5d46e074cb719cdd9793bf25bf9b315343d5ab2
--- /dev/null
+++ b/src/ruby/end2end/sig_handling_driver.rb
@@ -0,0 +1,61 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# smoke test for a grpc-using app that receives and
+# handles process-ending signals
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new
+  server_port = server_runner.run
+
+  sleep 1
+
+  STDERR.puts 'start client'
+  control_stub, client_pid = start_client('sig_handling_client.rb', server_port)
+
+  sleep 1
+
+  count = 0
+  while count < 5
+    control_stub.do_echo_rpc(
+      ClientControl::DoEchoRpcRequest.new(request: 'hello'))
+    Process.kill('SIGTERM', client_pid)
+    Process.kill('SIGINT', client_pid)
+    count += 1
+  end
+
+  cleanup(control_stub, client_pid, server_runner)
+end
+
+main
diff --git a/src/ruby/end2end/sig_int_during_channel_watch_client.rb b/src/ruby/end2end/sig_int_during_channel_watch_client.rb
new file mode 100755
index 0000000000000000000000000000000000000000..389fc5ba332be5ab6e46871ba45572dfa847d4d4
--- /dev/null
+++ b/src/ruby/end2end/sig_int_during_channel_watch_client.rb
@@ -0,0 +1,70 @@
+#!/usr/bin/env ruby
+
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require_relative './end2end_common'
+
+# Start polling the channel state in both the main thread
+# and a child thread. Try to get the driver to send process-ending
+# interrupt while both a child thread and the main thread are in the
+# middle of a blocking connectivity_state call.
+def main
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do
+      STDERR.puts 'client_control_port not used'
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  thd = Thread.new do
+    child_thread_channel = GRPC::Core::Channel.new("localhost:#{server_port}",
+                                                   {},
+                                                   :this_channel_is_insecure)
+    loop do
+      state = child_thread_channel.connectivity_state(false)
+      child_thread_channel.watch_connectivity_state(state, Time.now + 360)
+    end
+  end
+
+  main_channel = GRPC::Core::Channel.new("localhost:#{server_port}",
+                                         {},
+                                         :this_channel_is_insecure)
+  loop do
+    state = main_channel.connectivity_state(false)
+    main_channel.watch_connectivity_state(state, Time.now + 360)
+  end
+
+  thd.join
+end
+
+main
diff --git a/src/ruby/end2end/sig_int_during_channel_watch_driver.rb b/src/ruby/end2end/sig_int_during_channel_watch_driver.rb
new file mode 100755
index 0000000000000000000000000000000000000000..84d039bf19da574cd8a65bc7050cd066d9b50a8c
--- /dev/null
+++ b/src/ruby/end2end/sig_int_during_channel_watch_driver.rb
@@ -0,0 +1,69 @@
+#!/usr/bin/env ruby
+
+# 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.
+
+# abruptly end a process that has active calls to
+# Channel.watch_connectivity_state
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new
+  server_port = server_runner.run
+
+  sleep 1
+
+  STDERR.puts 'start client'
+  _, client_pid = start_client('sig_int_during_channel_watch_client.rb',
+                               server_port)
+
+  # give time for the client to get into the middle
+  # of a channel state watch call
+  sleep 1
+  Process.kill('SIGINT', client_pid)
+
+  begin
+    Timeout.timeout(10) do
+      Process.wait(client_pid)
+    end
+  rescue Timeout::Error
+    STDERR.puts "timeout wait for client pid #{client_pid}"
+    Process.kill('SIGKILL', client_pid)
+    Process.wait(client_pid)
+    STDERR.puts 'killed client child'
+    raise 'Timed out waiting for client process. It likely hangs when a ' \
+      'SIGINT is sent while there is an active connectivity_state call'
+  end
+
+  server_runner.stop
+end
+
+main
diff --git a/src/ruby/ext/grpc/extconf.rb b/src/ruby/ext/grpc/extconf.rb
index ecb66239b908db912466307dc8616627c442a54e..70679338321363c008a1dcac889b3288ab15e760 100644
--- a/src/ruby/ext/grpc/extconf.rb
+++ b/src/ruby/ext/grpc/extconf.rb
@@ -71,6 +71,7 @@ ENV['AR'] = 'libtool -o' if RUBY_PLATFORM =~ /darwin/
 
 ENV['EMBED_OPENSSL'] = 'true'
 ENV['EMBED_ZLIB'] = 'true'
+ENV['EMBED_CARES'] = 'true'
 ENV['ARCH_FLAGS'] = RbConfig::CONFIG['ARCH_FLAG']
 ENV['ARCH_FLAGS'] = '-arch i386 -arch x86_64' if RUBY_PLATFORM =~ /darwin/
 ENV['CFLAGS'] = '-DGPR_BACKWARDS_COMPATIBILITY_MODE'
diff --git a/src/ruby/ext/grpc/rb_channel.c b/src/ruby/ext/grpc/rb_channel.c
index 84e43d3f7bf46937ca10d8d02d5659d6962980b7..1c20c8813ff674618dff7878686fd00d2438639d 100644
--- a/src/ruby/ext/grpc/rb_channel.c
+++ b/src/ruby/ext/grpc/rb_channel.c
@@ -32,21 +32,22 @@
  */
 
 #include <ruby/ruby.h>
+#include <ruby/thread.h>
 
 #include "rb_grpc_imports.generated.h"
-#include "rb_channel.h"
 #include "rb_byte_buffer.h"
+#include "rb_channel.h"
 
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
-#include "rb_grpc.h"
 #include "rb_call.h"
 #include "rb_channel_args.h"
 #include "rb_channel_credentials.h"
 #include "rb_completion_queue.h"
+#include "rb_grpc.h"
 #include "rb_server.h"
 
 /* id_channel is the name of the hidden ivar that preserves a reference to the
@@ -73,9 +74,26 @@ typedef struct grpc_rb_channel {
 
   /* The actual channel */
   grpc_channel *wrapped;
-  grpc_completion_queue *queue;
+  int request_safe_destroy;
+  int safe_to_destroy;
+  grpc_connectivity_state current_connectivity_state;
+
+  int mu_init_done;
+  int abort_watch_connectivity_state;
+  gpr_mu channel_mu;
+  gpr_cv channel_cv;
 } grpc_rb_channel;
 
+/* Forward declarations of functions involved in temporary fix to
+ * https://github.com/grpc/grpc/issues/9941 */
+static void grpc_rb_channel_try_register_connection_polling(
+    grpc_rb_channel *wrapper);
+static void grpc_rb_channel_safe_destroy(grpc_rb_channel *wrapper);
+
+static grpc_completion_queue *channel_polling_cq;
+static gpr_mu global_connection_polling_mu;
+static int abort_channel_polling = 0;
+
 /* Destroys Channel instances. */
 static void grpc_rb_channel_free(void *p) {
   grpc_rb_channel *ch = NULL;
@@ -85,8 +103,13 @@ static void grpc_rb_channel_free(void *p) {
   ch = (grpc_rb_channel *)p;
 
   if (ch->wrapped != NULL) {
-    grpc_channel_destroy(ch->wrapped);
-    grpc_rb_completion_queue_destroy(ch->queue);
+    grpc_rb_channel_safe_destroy(ch);
+    ch->wrapped = NULL;
+  }
+
+  if (ch->mu_init_done) {
+    gpr_mu_destroy(&ch->channel_mu);
+    gpr_cv_destroy(&ch->channel_cv);
   }
 
   xfree(p);
@@ -104,13 +127,15 @@ static void grpc_rb_channel_mark(void *p) {
   }
 }
 
-static rb_data_type_t grpc_channel_data_type = {
-    "grpc_channel",
-    {grpc_rb_channel_mark, grpc_rb_channel_free, GRPC_RB_MEMSIZE_UNAVAILABLE,
-     {NULL, NULL}},
-    NULL, NULL,
+static rb_data_type_t grpc_channel_data_type = {"grpc_channel",
+                                                {grpc_rb_channel_mark,
+                                                 grpc_rb_channel_free,
+                                                 GRPC_RB_MEMSIZE_UNAVAILABLE,
+                                                 {NULL, NULL}},
+                                                NULL,
+                                                NULL,
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
-    RUBY_TYPED_FREE_IMMEDIATELY
+                                                RUBY_TYPED_FREE_IMMEDIATELY
 #endif
 };
 
@@ -145,6 +170,7 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
   rb_scan_args(argc, argv, "3", &target, &channel_args, &credentials);
 
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
+  wrapper->mu_init_done = 0;
   target_chars = StringValueCStr(target);
   grpc_rb_hash_convert_to_channel_args(channel_args, &args);
   if (TYPE(credentials) == T_SYMBOL) {
@@ -159,6 +185,27 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
     creds = grpc_rb_get_wrapped_channel_credentials(credentials);
     ch = grpc_secure_channel_create(creds, target_chars, &args, NULL);
   }
+
+  GPR_ASSERT(ch);
+
+  wrapper->wrapped = ch;
+
+  gpr_mu_init(&wrapper->channel_mu);
+  gpr_cv_init(&wrapper->channel_cv);
+  wrapper->mu_init_done = 1;
+
+  gpr_mu_lock(&wrapper->channel_mu);
+  wrapper->abort_watch_connectivity_state = 0;
+  wrapper->current_connectivity_state = grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
+  wrapper->safe_to_destroy = 0;
+  wrapper->request_safe_destroy = 0;
+
+  gpr_cv_broadcast(&wrapper->channel_cv);
+  gpr_mu_unlock(&wrapper->channel_mu);
+
+
+  grpc_rb_channel_try_register_connection_polling(wrapper);
+
   if (args.args != NULL) {
     xfree(args.args); /* Allocated by grpc_rb_hash_convert_to_channel_args */
   }
@@ -169,25 +216,28 @@ static VALUE grpc_rb_channel_init(int argc, VALUE *argv, VALUE self) {
   }
   rb_ivar_set(self, id_target, target);
   wrapper->wrapped = ch;
-  wrapper->queue = grpc_completion_queue_create(NULL);
   return self;
 }
 
 /*
   call-seq:
-    insecure_channel = Channel:new("myhost:8080", {'arg1': 'value1'})
-    creds = ...
-    secure_channel = Channel:new("myhost:443", {'arg1': 'value1'}, creds)
+    ch.connectivity_state       -> state
+    ch.connectivity_state(true) -> state
 
-  Creates channel instances. */
+  Indicates the current state of the channel, whose value is one of the
+  constants defined in GRPC::Core::ConnectivityStates.
+
+  It also tries to connect if the chennel is idle in the second form. */
 static VALUE grpc_rb_channel_get_connectivity_state(int argc, VALUE *argv,
                                                     VALUE self) {
-  VALUE try_to_connect = Qfalse;
+  VALUE try_to_connect_param = Qfalse;
+  int grpc_try_to_connect = 0;
   grpc_rb_channel *wrapper = NULL;
   grpc_channel *ch = NULL;
 
   /* "01" == 0 mandatory args, 1 (try_to_connect) is optional */
-  rb_scan_args(argc, argv, "01", try_to_connect);
+  rb_scan_args(argc, argv, "01", &try_to_connect_param);
+  grpc_try_to_connect = RTEST(try_to_connect_param) ? 1 : 0;
 
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
   ch = wrapper->wrapped;
@@ -195,57 +245,88 @@ static VALUE grpc_rb_channel_get_connectivity_state(int argc, VALUE *argv,
     rb_raise(rb_eRuntimeError, "closed!");
     return Qnil;
   }
-  return NUM2LONG(
-      grpc_channel_check_connectivity_state(ch, (int)try_to_connect));
+  return LONG2NUM(grpc_channel_check_connectivity_state(wrapper->wrapped, grpc_try_to_connect));
 }
 
-/* Watch for a change in connectivity state.
+typedef struct watch_state_stack {
+  grpc_rb_channel *wrapper;
+  gpr_timespec deadline;
+  int last_state;
+} watch_state_stack;
+
+static void *watch_channel_state_without_gvl(void *arg) {
+  watch_state_stack *stack = (watch_state_stack*)arg;
+  gpr_timespec deadline = stack->deadline;
+  grpc_rb_channel *wrapper = stack->wrapper;
+  int last_state = stack->last_state;
+  void *return_value = (void*)0;
+
+  gpr_mu_lock(&wrapper->channel_mu);
+  while(wrapper->current_connectivity_state == last_state &&
+        !wrapper->request_safe_destroy &&
+        !wrapper->safe_to_destroy &&
+        !wrapper->abort_watch_connectivity_state &&
+        gpr_time_cmp(deadline, gpr_now(GPR_CLOCK_REALTIME)) > 0) {
+    gpr_cv_wait(&wrapper->channel_cv, &wrapper->channel_mu, deadline);
+  }
+  if (wrapper->current_connectivity_state != last_state) {
+    return_value = (void*)1;
+  }
+  gpr_mu_unlock(&wrapper->channel_mu);
+
+  return return_value;
+}
 
-   Once the channel connectivity state is different from the last observed
-   state, tag will be enqueued on cq with success=1
+static void watch_channel_state_unblocking_func(void *arg) {
+  grpc_rb_channel *wrapper = (grpc_rb_channel*)arg;
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: watch channel state unblocking func called");
+  gpr_mu_lock(&wrapper->channel_mu);
+  wrapper->abort_watch_connectivity_state = 1;
+  gpr_cv_broadcast(&wrapper->channel_cv);
+  gpr_mu_unlock(&wrapper->channel_mu);
+}
 
-   If deadline expires BEFORE the state is changed, tag will be enqueued on
-   the completion queue with success=0 */
+/* Wait until the channel's connectivity state becomes different from
+ * "last_state", or "deadline" expires.
+ * Returns true if the the channel's connectivity state becomes
+ * different from "last_state" within "deadline".
+ * Returns false if "deadline" expires before the channel's connectivity
+ * state changes from "last_state".
+ * */
 static VALUE grpc_rb_channel_watch_connectivity_state(VALUE self,
                                                       VALUE last_state,
                                                       VALUE deadline) {
   grpc_rb_channel *wrapper = NULL;
-  grpc_channel *ch = NULL;
-  grpc_completion_queue *cq = NULL;
-
-  void *tag = wrapper;
-
-  grpc_event event;
+  watch_state_stack stack;
+  void* out;
 
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
-  ch = wrapper->wrapped;
-  cq = wrapper->queue;
-  if (ch == NULL) {
+
+  if (wrapper->wrapped == NULL) {
     rb_raise(rb_eRuntimeError, "closed!");
     return Qnil;
   }
-  grpc_channel_watch_connectivity_state(
-      ch,
-      (grpc_connectivity_state)NUM2LONG(last_state),
-      grpc_rb_time_timeval(deadline, /* absolute time */ 0),
-      cq,
-      tag);
 
-  event = rb_completion_queue_pluck(cq, tag,
-                                    gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  if (!FIXNUM_P(last_state)) {
+    rb_raise(rb_eTypeError, "bad type for last_state. want a GRPC::Core::ChannelState constant");
+    return Qnil;
+  }
 
-  if (event.success) {
+  stack.wrapper = wrapper;
+  stack.deadline = grpc_rb_time_timeval(deadline, 0);
+  stack.last_state = NUM2LONG(last_state);
+  out = rb_thread_call_without_gvl(watch_channel_state_without_gvl, &stack, watch_channel_state_unblocking_func, wrapper);
+  if (out) {
     return Qtrue;
-  } else {
-    return Qfalse;
   }
+  return Qfalse;
 }
 
 /* Create a call given a grpc_channel, in order to call method. The request
    is not sent until grpc_call_invoke is called. */
-static VALUE grpc_rb_channel_create_call(VALUE self, VALUE parent,
-                                         VALUE mask, VALUE method,
-                                         VALUE host, VALUE deadline) {
+static VALUE grpc_rb_channel_create_call(VALUE self, VALUE parent, VALUE mask,
+                                         VALUE method, VALUE host,
+                                         VALUE deadline) {
   VALUE res = Qnil;
   grpc_rb_channel *wrapper = NULL;
   grpc_call *call = NULL;
@@ -256,10 +337,11 @@ static VALUE grpc_rb_channel_create_call(VALUE self, VALUE parent,
   grpc_slice method_slice;
   grpc_slice host_slice;
   grpc_slice *host_slice_ptr = NULL;
-  char* tmp_str = NULL;
+  char *tmp_str = NULL;
 
   if (host != Qnil) {
-    host_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(host), RSTRING_LEN(host));
+    host_slice =
+        grpc_slice_from_copied_buffer(RSTRING_PTR(host), RSTRING_LEN(host));
     host_slice_ptr = &host_slice;
   }
   if (mask != Qnil) {
@@ -277,17 +359,18 @@ static VALUE grpc_rb_channel_create_call(VALUE self, VALUE parent,
     return Qnil;
   }
 
-  method_slice = grpc_slice_from_copied_buffer(RSTRING_PTR(method), RSTRING_LEN(method));
+  method_slice =
+      grpc_slice_from_copied_buffer(RSTRING_PTR(method), RSTRING_LEN(method));
 
   call = grpc_channel_create_call(ch, parent_call, flags, cq, method_slice,
-                                  host_slice_ptr, grpc_rb_time_timeval(
-                                      deadline,
-                                      /* absolute time */ 0), NULL);
+                                  host_slice_ptr,
+                                  grpc_rb_time_timeval(deadline,
+                                                       /* absolute time */ 0),
+                                  NULL);
 
   if (call == NULL) {
     tmp_str = grpc_slice_to_c_string(method_slice);
-    rb_raise(rb_eRuntimeError, "cannot create call with method %s",
-             tmp_str);
+    rb_raise(rb_eRuntimeError, "cannot create call with method %s", tmp_str);
     return Qnil;
   }
 
@@ -304,7 +387,6 @@ static VALUE grpc_rb_channel_create_call(VALUE self, VALUE parent,
   return res;
 }
 
-
 /* Closes the channel, calling it's destroy method */
 static VALUE grpc_rb_channel_destroy(VALUE self) {
   grpc_rb_channel *wrapper = NULL;
@@ -313,19 +395,18 @@ static VALUE grpc_rb_channel_destroy(VALUE self) {
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
   ch = wrapper->wrapped;
   if (ch != NULL) {
-    grpc_channel_destroy(ch);
+    grpc_rb_channel_safe_destroy(wrapper);
     wrapper->wrapped = NULL;
   }
 
   return Qnil;
 }
 
-
 /* Called to obtain the target that this channel accesses. */
 static VALUE grpc_rb_channel_get_target(VALUE self) {
   grpc_rb_channel *wrapper = NULL;
   VALUE res = Qnil;
-  char* target = NULL;
+  char *target = NULL;
 
   TypedData_Get_Struct(self, grpc_rb_channel, &grpc_channel_data_type, wrapper);
   target = grpc_channel_get_target(wrapper->wrapped);
@@ -335,10 +416,122 @@ static VALUE grpc_rb_channel_get_target(VALUE self) {
   return res;
 }
 
+// Either start polling channel connection state or signal that it's free to
+// destroy.
+// Not safe to call while a channel's connection state is polled.
+static void grpc_rb_channel_try_register_connection_polling(
+  grpc_rb_channel *wrapper) {
+  grpc_connectivity_state conn_state;
+  gpr_timespec sleep_time = gpr_time_add(
+      gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(20, GPR_TIMESPAN));
+
+  GPR_ASSERT(wrapper);
+  GPR_ASSERT(wrapper->wrapped);
+  gpr_mu_lock(&wrapper->channel_mu);
+  if (wrapper->request_safe_destroy) {
+    wrapper->safe_to_destroy = 1;
+    gpr_cv_broadcast(&wrapper->channel_cv);
+    gpr_mu_unlock(&wrapper->channel_mu);
+    return;
+  }
+  gpr_mu_lock(&global_connection_polling_mu);
+
+  conn_state = grpc_channel_check_connectivity_state(wrapper->wrapped, 0);
+  if (conn_state != wrapper->current_connectivity_state) {
+    wrapper->current_connectivity_state = conn_state;
+    gpr_cv_broadcast(&wrapper->channel_cv);
+  }
+  // avoid posting work to the channel polling cq if it's been shutdown
+  if (!abort_channel_polling && conn_state != GRPC_CHANNEL_SHUTDOWN) {
+    grpc_channel_watch_connectivity_state(
+        wrapper->wrapped, conn_state, sleep_time, channel_polling_cq, wrapper);
+  } else {
+    wrapper->safe_to_destroy = 1;
+    gpr_cv_broadcast(&wrapper->channel_cv);
+  }
+  gpr_mu_unlock(&global_connection_polling_mu);
+  gpr_mu_unlock(&wrapper->channel_mu);
+}
+
+// Note requires wrapper->wrapped, wrapper->channel_mu/cv initialized
+static void grpc_rb_channel_safe_destroy(grpc_rb_channel *wrapper) {
+  gpr_mu_lock(&wrapper->channel_mu);
+  wrapper->request_safe_destroy = 1;
+
+  while (!wrapper->safe_to_destroy) {
+    gpr_cv_wait(&wrapper->channel_cv, &wrapper->channel_mu,
+                gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+  GPR_ASSERT(wrapper->safe_to_destroy);
+  gpr_mu_unlock(&wrapper->channel_mu);
+
+  grpc_channel_destroy(wrapper->wrapped);
+}
+
+// Note this loop breaks out with a single call of
+// "grpc_rb_event_unblocking_func".
+// This assumes that a ruby call the unblocking func
+// indicates process shutdown.
+// In the worst case, this stops polling channel connectivity
+// early and falls back to current behavior.
+static void *run_poll_channels_loop_no_gil(void *arg) {
+  grpc_event event;
+  (void)arg;
+  for (;;) {
+    event = grpc_completion_queue_next(
+        channel_polling_cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+    if (event.type == GRPC_QUEUE_SHUTDOWN) {
+      break;
+    }
+    if (event.type == GRPC_OP_COMPLETE) {
+      grpc_rb_channel_try_register_connection_polling((grpc_rb_channel *)event.tag);
+    }
+  }
+  grpc_completion_queue_destroy(channel_polling_cq);
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: run_poll_channels_loop_no_gil - exit connection polling loop");
+  return NULL;
+}
+
+// Notify the channel polling loop to cleanup and shutdown.
+static void grpc_rb_event_unblocking_func(void *arg) {
+  (void)arg;
+  gpr_mu_lock(&global_connection_polling_mu);
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: grpc_rb_event_unblocking_func - begin aborting connection polling");
+  abort_channel_polling = 1;
+  grpc_completion_queue_shutdown(channel_polling_cq);
+  gpr_mu_unlock(&global_connection_polling_mu);
+}
+
+// Poll channel connectivity states in background thread without the GIL.
+static VALUE run_poll_channels_loop(VALUE arg) {
+  (void)arg;
+  gpr_log(GPR_DEBUG, "GRPC_RUBY: run_poll_channels_loop - create connection polling thread");
+  rb_thread_call_without_gvl(run_poll_channels_loop_no_gil, NULL,
+                             grpc_rb_event_unblocking_func, NULL);
+  return Qnil;
+}
+
+/* Temporary fix for
+ * https://github.com/GoogleCloudPlatform/google-cloud-ruby/issues/899.
+ * Transports in idle channels can get destroyed. Normally c-core re-connects,
+ * but in grpc-ruby core never gets a thread until an RPC is made, because ruby
+ * only calls c-core's "completion_queu_pluck" API.
+ * This uses a global background thread that calls
+ * "completion_queue_next" on registered "watch_channel_connectivity_state"
+ * calls - so that c-core can reconnect if needed, when there aren't any RPC's.
+ * TODO(apolcyn) remove this when core handles new RPCs on dead connections.
+ */
+static void start_poll_channels_loop() {
+  channel_polling_cq = grpc_completion_queue_create(NULL);
+  gpr_mu_init(&global_connection_polling_mu);
+  abort_channel_polling = 0;
+  rb_thread_create(run_poll_channels_loop, NULL);
+}
+
 static void Init_grpc_propagate_masks() {
   /* Constants representing call propagation masks in grpc.h */
-  VALUE grpc_rb_mPropagateMasks = rb_define_module_under(
-      grpc_rb_mGrpcCore, "PropagateMasks");
+  VALUE grpc_rb_mPropagateMasks =
+      rb_define_module_under(grpc_rb_mGrpcCore, "PropagateMasks");
   rb_define_const(grpc_rb_mPropagateMasks, "DEADLINE",
                   UINT2NUM(GRPC_PROPAGATE_DEADLINE));
   rb_define_const(grpc_rb_mPropagateMasks, "CENSUS_STATS_CONTEXT",
@@ -353,8 +546,8 @@ static void Init_grpc_propagate_masks() {
 
 static void Init_grpc_connectivity_states() {
   /* Constants representing call propagation masks in grpc.h */
-  VALUE grpc_rb_mConnectivityStates = rb_define_module_under(
-      grpc_rb_mGrpcCore, "ConnectivityStates");
+  VALUE grpc_rb_mConnectivityStates =
+      rb_define_module_under(grpc_rb_mGrpcCore, "ConnectivityStates");
   rb_define_const(grpc_rb_mConnectivityStates, "IDLE",
                   LONG2NUM(GRPC_CHANNEL_IDLE));
   rb_define_const(grpc_rb_mConnectivityStates, "CONNECTING",
@@ -382,12 +575,11 @@ void Init_grpc_channel() {
 
   /* Add ruby analogues of the Channel methods. */
   rb_define_method(grpc_rb_cChannel, "connectivity_state",
-                   grpc_rb_channel_get_connectivity_state,
-                   -1);
+                   grpc_rb_channel_get_connectivity_state, -1);
   rb_define_method(grpc_rb_cChannel, "watch_connectivity_state",
-                   grpc_rb_channel_watch_connectivity_state, 4);
-  rb_define_method(grpc_rb_cChannel, "create_call",
-                   grpc_rb_channel_create_call, 5);
+                   grpc_rb_channel_watch_connectivity_state, 2);
+  rb_define_method(grpc_rb_cChannel, "create_call", grpc_rb_channel_create_call,
+                   5);
   rb_define_method(grpc_rb_cChannel, "target", grpc_rb_channel_get_target, 0);
   rb_define_method(grpc_rb_cChannel, "destroy", grpc_rb_channel_destroy, 0);
   rb_define_alias(grpc_rb_cChannel, "close", "destroy");
@@ -405,6 +597,7 @@ void Init_grpc_channel() {
   id_insecure_channel = rb_intern("this_channel_is_insecure");
   Init_grpc_propagate_masks();
   Init_grpc_connectivity_states();
+  start_poll_channels_loop();
 }
 
 /* Gets the wrapped channel from the ruby wrapper */
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index 3ef6f0eb299f1abf2aaaef7542ceaeec96dad4c6..063f92114c0ecd30a484d318408fa31ca9577db3 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -91,6 +91,9 @@ grpc_init_type grpc_init_import;
 grpc_shutdown_type grpc_shutdown_import;
 grpc_version_string_type grpc_version_string_import;
 grpc_g_stands_for_type grpc_g_stands_for_import;
+grpc_completion_queue_factory_lookup_type grpc_completion_queue_factory_lookup_import;
+grpc_completion_queue_create_for_next_type grpc_completion_queue_create_for_next_import;
+grpc_completion_queue_create_for_pluck_type grpc_completion_queue_create_for_pluck_import;
 grpc_completion_queue_create_type grpc_completion_queue_create_import;
 grpc_completion_queue_next_type grpc_completion_queue_next_import;
 grpc_completion_queue_pluck_type grpc_completion_queue_pluck_import;
@@ -385,6 +388,9 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_shutdown_import = (grpc_shutdown_type) GetProcAddress(library, "grpc_shutdown");
   grpc_version_string_import = (grpc_version_string_type) GetProcAddress(library, "grpc_version_string");
   grpc_g_stands_for_import = (grpc_g_stands_for_type) GetProcAddress(library, "grpc_g_stands_for");
+  grpc_completion_queue_factory_lookup_import = (grpc_completion_queue_factory_lookup_type) GetProcAddress(library, "grpc_completion_queue_factory_lookup");
+  grpc_completion_queue_create_for_next_import = (grpc_completion_queue_create_for_next_type) GetProcAddress(library, "grpc_completion_queue_create_for_next");
+  grpc_completion_queue_create_for_pluck_import = (grpc_completion_queue_create_for_pluck_type) GetProcAddress(library, "grpc_completion_queue_create_for_pluck");
   grpc_completion_queue_create_import = (grpc_completion_queue_create_type) GetProcAddress(library, "grpc_completion_queue_create");
   grpc_completion_queue_next_import = (grpc_completion_queue_next_type) GetProcAddress(library, "grpc_completion_queue_next");
   grpc_completion_queue_pluck_import = (grpc_completion_queue_pluck_type) GetProcAddress(library, "grpc_completion_queue_pluck");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index ef9845dfe06407f633b3038a615f03acf92fb395..f5dcd68a8e9b78f2ec1c463921125a0f935b74d2 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -224,6 +224,15 @@ extern grpc_version_string_type grpc_version_string_import;
 typedef const char *(*grpc_g_stands_for_type)(void);
 extern grpc_g_stands_for_type grpc_g_stands_for_import;
 #define grpc_g_stands_for grpc_g_stands_for_import
+typedef const grpc_completion_queue_factory *(*grpc_completion_queue_factory_lookup_type)(const grpc_completion_queue_attributes *attributes);
+extern grpc_completion_queue_factory_lookup_type grpc_completion_queue_factory_lookup_import;
+#define grpc_completion_queue_factory_lookup grpc_completion_queue_factory_lookup_import
+typedef grpc_completion_queue *(*grpc_completion_queue_create_for_next_type)(void *reserved);
+extern grpc_completion_queue_create_for_next_type grpc_completion_queue_create_for_next_import;
+#define grpc_completion_queue_create_for_next grpc_completion_queue_create_for_next_import
+typedef grpc_completion_queue *(*grpc_completion_queue_create_for_pluck_type)(void *reserved);
+extern grpc_completion_queue_create_for_pluck_type grpc_completion_queue_create_for_pluck_import;
+#define grpc_completion_queue_create_for_pluck grpc_completion_queue_create_for_pluck_import
 typedef grpc_completion_queue *(*grpc_completion_queue_create_type)(void *reserved);
 extern grpc_completion_queue_create_type grpc_completion_queue_create_import;
 #define grpc_completion_queue_create grpc_completion_queue_create_import
diff --git a/src/ruby/spec/channel_connection_spec.rb b/src/ruby/spec/channel_connection_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..940d68b9b04a94c13703b47a4fea9b92bc9b3360
--- /dev/null
+++ b/src/ruby/spec/channel_connection_spec.rb
@@ -0,0 +1,141 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require 'grpc'
+
+# A test message
+class EchoMsg
+  def self.marshal(_o)
+    ''
+  end
+
+  def self.unmarshal(_o)
+    EchoMsg.new
+  end
+end
+
+# A test service with an echo implementation.
+class EchoService
+  include GRPC::GenericService
+  rpc :an_rpc, EchoMsg, EchoMsg
+  attr_reader :received_md
+
+  def initialize(**kw)
+    @trailing_metadata = kw
+    @received_md = []
+  end
+
+  def an_rpc(req, call)
+    GRPC.logger.info('echo service received a request')
+    call.output_metadata.update(@trailing_metadata)
+    @received_md << call.metadata unless call.metadata.nil?
+    req
+  end
+end
+
+EchoStub = EchoService.rpc_stub_class
+
+def start_server(port = 0)
+  @srv = GRPC::RpcServer.new
+  server_port = @srv.add_http2_port("localhost:#{port}", :this_port_is_insecure)
+  @srv.handle(EchoService)
+  @server_thd = Thread.new { @srv.run }
+  @srv.wait_till_running
+  server_port
+end
+
+def stop_server
+  expect(@srv.stopped?).to be(false)
+  @srv.stop
+  @server_thd.join
+  expect(@srv.stopped?).to be(true)
+end
+
+describe 'channel connection behavior' do
+  it 'the client channel handles temporary loss of a transport' do
+    port = start_server
+    stub = EchoStub.new("localhost:#{port}", :this_channel_is_insecure)
+    req = EchoMsg.new
+    expect(stub.an_rpc(req)).to be_a(EchoMsg)
+    stop_server
+    sleep 1
+    # TODO(apolcyn) grabbing the same port might fail, is this stable enough?
+    start_server(port)
+    expect(stub.an_rpc(req)).to be_a(EchoMsg)
+    stop_server
+  end
+
+  it 'observably connects and reconnects to transient server' \
+    ' when using the channel state API' do
+    port = start_server
+    ch = GRPC::Core::Channel.new("localhost:#{port}", {},
+                                 :this_channel_is_insecure)
+
+    expect(ch.connectivity_state).to be(GRPC::Core::ConnectivityStates::IDLE)
+
+    state = ch.connectivity_state(true)
+
+    count = 0
+    while count < 20 && state != GRPC::Core::ConnectivityStates::READY
+      ch.watch_connectivity_state(state, Time.now + 60)
+      state = ch.connectivity_state(true)
+      count += 1
+    end
+
+    expect(state).to be(GRPC::Core::ConnectivityStates::READY)
+
+    stop_server
+
+    state = ch.connectivity_state
+
+    count = 0
+    while count < 20 && state == GRPC::Core::ConnectivityStates::READY
+      ch.watch_connectivity_state(state, Time.now + 60)
+      state = ch.connectivity_state
+      count += 1
+    end
+
+    expect(state).to_not be(GRPC::Core::ConnectivityStates::READY)
+
+    start_server(port)
+
+    state = ch.connectivity_state(true)
+
+    count = 0
+    while count < 20 && state != GRPC::Core::ConnectivityStates::READY
+      ch.watch_connectivity_state(state, Time.now + 60)
+      state = ch.connectivity_state(true)
+      count += 1
+    end
+
+    expect(state).to be(GRPC::Core::ConnectivityStates::READY)
+
+    stop_server
+  end
+end
diff --git a/src/ruby/spec/channel_spec.rb b/src/ruby/spec/channel_spec.rb
index 740eac631a3e40a1697da49954a2db8f360e0c5b..a289a00f0437113d370ba7c24bb7de6595a00473 100644
--- a/src/ruby/spec/channel_spec.rb
+++ b/src/ruby/spec/channel_spec.rb
@@ -153,6 +153,35 @@ describe GRPC::Core::Channel do
     end
   end
 
+  describe '#connectivity_state' do
+    it 'returns an enum' do
+      ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
+      valid_states = [
+        GRPC::Core::ConnectivityStates::IDLE,
+        GRPC::Core::ConnectivityStates::CONNECTING,
+        GRPC::Core::ConnectivityStates::READY,
+        GRPC::Core::ConnectivityStates::TRANSIENT_FAILURE,
+        GRPC::Core::ConnectivityStates::FATAL_FAILURE
+      ]
+
+      expect(valid_states).to include(ch.connectivity_state)
+    end
+
+    it 'returns an enum when trying to connect' do
+      ch = GRPC::Core::Channel.new(fake_host, nil, :this_channel_is_insecure)
+      ch.connectivity_state(true)
+      valid_states = [
+        GRPC::Core::ConnectivityStates::IDLE,
+        GRPC::Core::ConnectivityStates::CONNECTING,
+        GRPC::Core::ConnectivityStates::READY,
+        GRPC::Core::ConnectivityStates::TRANSIENT_FAILURE,
+        GRPC::Core::ConnectivityStates::FATAL_FAILURE
+      ]
+
+      expect(valid_states).to include(ch.connectivity_state)
+    end
+  end
+
   describe '::SSL_TARGET' do
     it 'is a symbol' do
       expect(GRPC::Core::Channel::SSL_TARGET).to be_a(Symbol)
diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index 1c2ef0a9c16748c3af3b136098207090114f6483..e2fc216bca739ab0374b675f2fa7276a20962b39 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -40,17 +40,17 @@
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
   <%!
-  
+
   import re
-  
+
   proto_re = re.compile('(.*)\\.proto')
-  
+
   def proto_replace_ext(filename, ext):
       m = proto_re.match(filename)
       if not m:
         return filename
       return '${_gRPC_PROTO_GENS_DIR}/' + m.group(1) + ext
-  
+
   def get_deps(target_dict):
     deps = []
     if target_dict.get('baselib', False):
@@ -63,19 +63,20 @@
       deps.append("${_gRPC_PROTOBUF_LIBRARIES}")
     if target_dict['name'] in ['grpc']:
       deps.append("${_gRPC_ZLIB_LIBRARIES}")
+      deps.append("${_gRPC_CARES_LIBRARIES}")
     deps.append("${_gRPC_ALLTARGETS_LIBRARIES}")
     for d in target_dict.get('deps', []):
       deps.append(d)
     if target_dict.build == 'test' and target_dict.language == 'c++':
       deps.append("${_gRPC_GFLAGS_LIBRARIES}")
     return deps
-  
+
   def get_platforms_condition_begin(platforms):
     if all(platform in platforms for platform in ['linux', 'mac', 'posix', 'windows']):
       return ''
     cond = ' OR '.join(['_gRPC_PLATFORM_%s' % platform.upper() for platform in platforms])
     return 'if(%s)\n' % cond
-  
+
   def get_platforms_condition_end(platforms):
     if not get_platforms_condition_begin(platforms):
       return ''
@@ -90,7 +91,7 @@
   set(PACKAGE_TARNAME   "<%text>${PACKAGE_NAME}-${PACKAGE_VERSION}</%text>")
   set(PACKAGE_BUGREPORT "https://github.com/grpc/grpc/issues/")
   project(<%text>${PACKAGE_NAME}</%text> C CXX)
-  
+
   # Options
   option(gRPC_BUILD_TESTS "Build tests" OFF)
 
@@ -103,18 +104,21 @@
   set(gRPC_ZLIB_PROVIDER "module" CACHE STRING "Provider of zlib library")
   set_property(CACHE gRPC_ZLIB_PROVIDER PROPERTY STRINGS "module" "package")
 
+  set(gRPC_CARES_PROVIDER "module" CACHE STRING "Provider of c-ares library")
+  set_property(CACHE gRPC_CARES_PROVIDER PROPERTY STRINGS "module" "package")
+
   set(gRPC_SSL_PROVIDER "module" CACHE STRING "Provider of ssl library")
   set_property(CACHE gRPC_SSL_PROVIDER PROPERTY STRINGS "module" "package")
 
   set(gRPC_PROTOBUF_PROVIDER "module" CACHE STRING "Provider of protobuf library")
   set_property(CACHE gRPC_PROTOBUF_PROVIDER PROPERTY STRINGS "module" "package")
-  
+
   set(gRPC_GFLAGS_PROVIDER "module" CACHE STRING "Provider of gflags library")
   set_property(CACHE gRPC_GFLAGS_PROVIDER PROPERTY STRINGS "module" "package")
-  
+
   set(gRPC_BENCHMARK_PROVIDER "module" CACHE STRING "Provider of benchmark library")
   set_property(CACHE gRPC_BENCHMARK_PROVIDER PROPERTY STRINGS "module" "package")
-  
+
   set(gRPC_USE_PROTO_LITE OFF CACHE BOOL "Use the protobuf-lite library")
 
   if(UNIX)
@@ -129,7 +133,7 @@
   if(WIN32)
     set(_gRPC_PLATFORM_WINDOWS ON)
   endif()
-  
+
   ## Some libraries are shared even with BUILD_SHARED_LIBRARIES=OFF
   set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
 
@@ -170,6 +174,37 @@
     set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
   endif()
 
+  if("<%text>${gRPC_CARES_PROVIDER}</%text>" STREQUAL "module")
+    if(NOT CARES_ROOT_DIR)
+      set(CARES_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/src/c-ares)
+    endif()
+    string(TOLOWER <%text>${CMAKE_SYSTEM_NAME}</%text> CARES_SYSTEM_NAME)
+    set(CARES_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/cares")
+    set(CARES_BUILD_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares")
+    set(CARES_PLATFORM_INCLUDE_DIR "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/config_<%text>${CARES_SYSTEM_NAME}</%text>")
+    if(EXISTS "<%text>${CARES_ROOT_DIR}</%text>/CMakeLists.txt")
+      if("<%text>${CARES_SYSTEM_NAME}</%text>" MATCHES "windows")
+        add_definitions(-DCARES_STATICLIB=1)
+        add_definitions(-DWIN32_LEAN_AND_MEAN=1)
+      else()
+        add_definitions(-DHAVE_CONFIG_H=1)
+        add_definitions(-D_GNU_SOURCE=1)
+      endif()
+      add_subdirectory(src/c-ares third_party/cares)
+      if(TARGET cares)
+          set(_gRPC_CARES_LIBRARIES cares)
+      endif()
+    else()
+      message(WARNING "gRPC_CARES_PROVIDER is \"module\" but CARES_ROOT_DIR is wrong")
+    endif()
+  elseif("<%text>${gRPC_CARES_PROVIDER}</%text>" STREQUAL "package")
+    find_package(CARES)
+    if(TARGET CARES::CARES)
+      set(_gRPC_CARES_LIBRARIES CARES::CARES)
+    endif()
+    set(_gRPC_FIND_CARES "if(NOT CARES_FOUND)\n  find_package(CARES)\nendif()")
+  endif()
+
   if("<%text>${gRPC_PROTOBUF_PROVIDER}</%text>" STREQUAL "module")
     # Building the protobuf tests require gmock what is not part of a standard protobuf checkout.
     # Disable them unless they are explicitly requested from the cmake command line (when we assume
@@ -234,7 +269,7 @@
     endif()
     set(_gRPC_FIND_SSL "if(NOT OpenSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
   endif()
-  
+
   if("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" STREQUAL "module")
     if(NOT GFLAGS_ROOT_DIR)
       set(GFLAGS_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/gflags)
@@ -254,7 +289,7 @@
     endif()
     set(_gRPC_FIND_GFLAGS "if(NOT gflags_FOUND)\n  find_package(gflags)\nendif()")
   endif()
-  
+
   if("<%text>${gRPC_BENCHMARK_PROVIDER}</%text>" STREQUAL "module")
     if(NOT BENCHMARK_ROOT_DIR)
       set(BENCHMARK_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/benchmark)
@@ -292,11 +327,11 @@
   if(NOT DEFINED CMAKE_INSTALL_CMAKEDIR)
     set(CMAKE_INSTALL_CMAKEDIR "<%text>${CMAKE_INSTALL_LIBDIR}</%text>/cmake/gRPC")
   endif()
-  
+
   # Create directory for generated .proto files
   set(_gRPC_PROTO_GENS_DIR <%text>${CMAKE_BINARY_DIR}/gens</%text>)
   file(MAKE_DIRECTORY <%text>${_gRPC_PROTO_GENS_DIR}</%text>)
-  
+
   #  protobuf_generate_grpc_cpp
   #  --------------------------
   #
@@ -313,7 +348,7 @@
       message(SEND_ERROR "Error: PROTOBUF_GENERATE_GRPC_CPP() called without any proto files")
       return()
     endif()
-  
+
     set(_protobuf_include_path -I .)
     foreach(FIL <%text>${ARGN}</%text>)
       get_filename_component(ABS_FIL <%text>${FIL}</%text> ABSOLUTE)
@@ -321,7 +356,7 @@
       file(RELATIVE_PATH REL_FIL <%text>${CMAKE_SOURCE_DIR}</%text> <%text>${ABS_FIL}</%text>)
       get_filename_component(REL_DIR <%text>${REL_FIL}</%text> DIRECTORY)
       set(RELFIL_WE "<%text>${REL_DIR}/${FIL_WE}</%text>")
-      
+
       add_custom_command(
         OUTPUT <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc"</%text>
                <%text>"${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h"</%text>
@@ -337,11 +372,11 @@
         WORKING_DIRECTORY <%text>${CMAKE_SOURCE_DIR}</%text>
         COMMENT "Running gRPC C++ protocol buffer compiler on <%text>${FIL}</%text>"
         VERBATIM)
-        
+
         <%text>set_source_files_properties("${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.grpc.pb.h" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.cc" "${_gRPC_PROTO_GENS_DIR}/${RELFIL_WE}.pb.h" PROPERTIES GENERATED TRUE)</%text>
     endforeach()
   endfunction()
-  
+
   add_custom_target(plugins
     DEPENDS
   % for tgt in targets:
@@ -350,7 +385,7 @@
   % endif
   % endfor
   )
-  
+
   add_custom_target(tools_c
     DEPENDS
   % for tgt in targets:
@@ -359,7 +394,7 @@
   % endif
   % endfor
   )
-  
+
   add_custom_target(tools_cxx
     DEPENDS
   % for tgt in targets:
@@ -368,10 +403,10 @@
   % endif
   % endfor
   )
-  
+
   add_custom_target(tools
     DEPENDS tools_c tools_cxx)
-  
+
   if (gRPC_BUILD_TESTS)
   add_custom_target(buildtests_c)
   % for tgt in targets:
@@ -381,7 +416,7 @@
   ${get_platforms_condition_end(tgt.platforms)}\
   % endif
   % endfor
-  
+
   add_custom_target(buildtests_cxx)
   % for tgt in targets:
   % if tgt.build == 'test' and tgt.language == 'c++' and not tgt.get('external_deps', None) and not tgt.boringssl:
@@ -390,11 +425,11 @@
   ${get_platforms_condition_end(tgt.platforms)}\
   % endif
   % endfor
-  
+
   add_custom_target(buildtests
     DEPENDS buildtests_c buildtests_cxx)
   endif (gRPC_BUILD_TESTS)
-  
+
   % for lib in libs:
   % if lib.build in ["all", "protoc", "tool", "test", "private"] and not lib.boringssl:
   % if not lib.get('build_system', []) or 'cmake' in lib.get('build_system', []):
@@ -470,6 +505,10 @@
     PRIVATE <%text>${ZLIB_INCLUDE_DIR}</%text>
     PRIVATE <%text>${BENCHMARK}</%text>/include
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
+    PRIVATE <%text>${CARES_BUILD_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CARES_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CARES_PLATFORM_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/cares/cares
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
   % if lib.build in ['test', 'private'] and lib.language == 'c++':
     PRIVATE third_party/googletest/include
@@ -519,7 +558,7 @@
     third_party/googletest/src/gtest-all.cc
   % endif
   )
-  
+
   % for src in tgt.src:
   % if proto_re.match(src):
   protobuf_generate_grpc_cpp(
@@ -536,6 +575,10 @@
     PRIVATE <%text>${BENCHMARK_ROOT_DIR}</%text>/include
     PRIVATE <%text>${ZLIB_ROOT_DIR}</%text>
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/zlib
+    PRIVATE <%text>${CARES_BUILD_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CARES_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CARES_PLATFORM_INCLUDE_DIR}</%text>
+    PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/cares/cares
     PRIVATE <%text>${CMAKE_CURRENT_BINARY_DIR}</%text>/third_party/gflags/include
   % if tgt.build in ['test', 'private'] and tgt.language == 'c++':
     PRIVATE third_party/googletest/include
diff --git a/templates/Makefile.template b/templates/Makefile.template
index f81d64399136940fea355eabcc2ad6a77fd623e6..60362b6e43a8afdf13aa0826839d84acc6be6d53 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -405,7 +405,7 @@
   SHARED_VERSION_CPP = -${settings.cpp_version.major}
   SHARED_VERSION_CSHARP = -${settings.csharp_version.major}
   else ifeq ($(SYSTEM),Darwin)
-  EXECUTABLE_SUFFIX = 
+  EXECUTABLE_SUFFIX =
   SHARED_EXT_CORE = dylib
   SHARED_EXT_CPP = dylib
   SHARED_EXT_CSHARP = dylib
@@ -414,7 +414,7 @@
   SHARED_VERSION_CPP =
   SHARED_VERSION_CSHARP =
   else
-  EXECUTABLE_SUFFIX = 
+  EXECUTABLE_SUFFIX =
   SHARED_EXT_CORE = so.$(CORE_VERSION)
   SHARED_EXT_CPP = so.$(CPP_VERSION)
   SHARED_EXT_CSHARP = so.$(CSHARP_VERSION)
@@ -435,6 +435,7 @@
   OPENSSL_NPN_CHECK_CMD = $(PKG_CONFIG) --atleast-version=1.0.1 openssl
   ZLIB_CHECK_CMD = $(PKG_CONFIG) --exists zlib
   PROTOBUF_CHECK_CMD = $(PKG_CONFIG) --atleast-version=3.0.0 protobuf
+  CARES_CHECK_CMD = $(PKG_CONFIG) --exists libcares
   else # HAS_PKG_CONFIG
 
   ifeq ($(SYSTEM),MINGW32)
@@ -448,6 +449,7 @@
   BORINGSSL_COMPILE_CHECK_CMD = $(CC) $(CPPFLAGS) ${defaults.boringssl.CPPFLAGS} $(CFLAGS) ${defaults.boringssl.CFLAGS} -o $(TMPOUT) test/build/boringssl.c $(LDFLAGS)
   ZLIB_CHECK_CMD = $(CC) $(CPPFLAGS) $(CFLAGS) -o $(TMPOUT) test/build/zlib.c -lz $(LDFLAGS)
   PROTOBUF_CHECK_CMD = $(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $(TMPOUT) test/build/protobuf.cc -lprotobuf $(LDFLAGS)
+  CARES_CHECK_CMD = $(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $(TMPOUT) test/build/c-ares.c -lcares $(LDFLAGS)
 
   endif # HAS_PKG_CONFIG
 
@@ -487,12 +489,17 @@
   ifeq ($(HAS_SYSTEM_PROTOBUF),true)
   CACHE_MK += HAS_SYSTEM_PROTOBUF = true,
   endif
+  HAS_SYSTEM_CARES ?=  $(shell $(CARES_CHECK_CMD) 2> /dev/null && echo true || echo false)
+  ifeq ($(HAS_SYSTEM_CARES),true)
+  CACHE_MK += HAS_SYSTEM_CARES = true,
+  endif
   else
   # override system libraries if the config requires a custom compiled library
   HAS_SYSTEM_OPENSSL_ALPN = false
   HAS_SYSTEM_OPENSSL_NPN = false
   HAS_SYSTEM_ZLIB = false
   HAS_SYSTEM_PROTOBUF = false
+  HAS_SYSTEM_CARES = false
   endif
 
   HAS_PROTOC ?= $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
@@ -551,6 +558,12 @@
   HAS_EMBEDDED_PROTOBUF = true
   endif
 
+  ifeq ($(wildcard third_party/cares/cares/ares.h),)
+  HAS_EMBEDDED_CARES = false
+  else
+  HAS_EMBEDDED_CARES = true
+  endif
+
   PC_REQUIRES_GRPC =
   PC_LIBS_GRPC =
 
@@ -583,6 +596,37 @@
   endif
   endif
 
+  CARES_PKG_CONFIG = false
+
+  ifeq ($(HAS_SYSTEM_CARES),false)
+  ifeq ($(HAS_EMBEDDED_CARES), true)
+  EMBED_CARES ?= true
+  else
+  DEP_MISSING += cares
+  EMBED_CARES ?= broken
+  endif
+  else
+  EMBED_CARES ?= false
+  endif
+
+  ifeq ($(EMBED_CARES),true)
+  CARES_DEP = $(LIBDIR)/$(CONFIG)/libares.a
+  CARES_MERGE_OBJS = $(LIBARES_OBJS)
+  CARES_MERGE_LIBS = $(LIBDIR)/$(CONFIG)/libares.a
+  CPPFLAGS := -Ithird_party/cares -Ithird_party/cares/cares $(CPPFLAGS)
+  LDFLAGS := -L$(LIBDIR)/$(CONFIG)/c-ares $(LDFLAGS)
+  else
+  ifeq ($(HAS_PKG_CONFIG),true)
+  PC_REQUIRES_GRPC += libcares
+  CPPFLAGS += $(shell $(PKG_CONFIG) --cflags libcares)
+  LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libcares)
+  LIBS += $(patsubst -l%,%,$(shell $(PKG_CONFIG) --libs-only-l libcares))
+  else
+  PC_LIBS_GRPC += -lcares
+  LIBS += cares
+  endif
+  endif
+
   OPENSSL_PKG_CONFIG = false
 
   PC_REQUIRES_SECURE =
@@ -864,6 +908,7 @@
   	$(PERFTOOLS_CHECK_CMD) || true
   	$(PROTOBUF_CHECK_CMD) || true
   	$(PROTOC_CHECK_VERSION_CMD) || true
+  	$(CARES_CHECK_CMD) || true
 
   third_party/protobuf/configure:
   	$(E) "[AUTOGEN] Preparing protobuf"
@@ -1432,7 +1477,7 @@
   else
   % endif
 
-  $(LIBDIR)/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP) $(OPENSSL_DEP)\
+  $(LIBDIR)/$(CONFIG)/lib${lib.name}.a: $(ZLIB_DEP) $(OPENSSL_DEP) $(CARES_DEP)\
   ## The else here corresponds to the if secure earlier.
   % else:
   % if lib.language == 'c++':
@@ -1453,6 +1498,9 @@
   % if lib.name != 'z':
   $(ZLIB_DEP) \
   % endif
+  % if lib.name != 'ares':
+  $(CARES_DEP) \
+  % endif
   % endif
   % if lib.language == 'c++':
    $(PROTOBUF_DEP)\
@@ -1461,6 +1509,7 @@
   % if lib.get('baselib', False):
    $(LIBGPR_OBJS) \
    $(ZLIB_MERGE_OBJS) \
+   $(CARES_MERGE_OBJS) \
   % if lib.get('secure', 'check') == True:
    $(OPENSSL_MERGE_OBJS) \
   % endif
@@ -1473,6 +1522,7 @@
   % if lib.get('baselib', False):
    $(LIBGPR_OBJS) \
    $(ZLIB_MERGE_OBJS) \
+   $(CARES_MERGE_OBJS) \
   % if lib.get('secure', 'check') == True:
    $(OPENSSL_MERGE_OBJS) \
   % endif
@@ -1495,9 +1545,9 @@
     common = '$(LIB' + lib.name.upper() + '_OBJS)'
 
     link_libs = ''
-    lib_deps = ' $(ZLIB_DEP)'
+    lib_deps = ' $(ZLIB_DEP) $(CARES_DEP)'
     mingw_libs = ''
-    mingw_lib_deps = ' $(ZLIB_DEP)'
+    mingw_lib_deps = ' $(ZLIB_DEP) $(CARES_DEP)'
     if lib.language == 'c++':
       lib_deps += ' $(PROTOBUF_DEP)'
       mingw_lib_deps += ' $(PROTOBUF_DEP)'
@@ -1522,7 +1572,7 @@
     security = lib.get('secure', 'check')
     if security == True:
       common = common + ' $(OPENSSL_MERGE_LIBS) $(LDLIBS_SECURE)'
-    common = common + ' $(ZLIB_MERGE_LIBS)'
+    common = common + ' $(ZLIB_MERGE_LIBS) $(CARES_MERGE_LIBS)'
 
     if security in [True, 'check']:
       for src in lib.src:
@@ -1723,6 +1773,11 @@
   endif
   % endif
 
+  % if tgt.get('defaults', None):
+  %  for name, value in defaults.get(tgt.defaults).iteritems():
+  $(${tgt.name.upper()}_OBJS): ${name} += ${value}
+  %  endfor
+  % endif
   % for src in tgt.src:
   $(OBJDIR)/$(CONFIG)/${os.path.splitext(src)[0]}.o: \
   % for dep in tgt.deps:
diff --git a/templates/binding.gyp.template b/templates/binding.gyp.template
index 3ad99ec22c692b4363ebc9ca65a53eb5b7656caa..aeeb56b9a6a998f1b73eedafb94c2056a284d3d3 100644
--- a/templates/binding.gyp.template
+++ b/templates/binding.gyp.template
@@ -41,11 +41,9 @@
   {
     'variables': {
       'runtime%': 'node',
-      # UV integration in C core is disabled by default while bugs are ironed
-      # out. It can be re-enabled for one build by setting the npm config
-      # variable grpc_uv to true, and it can be re-enabled permanently by
-      # setting it to true here.
-      'grpc_uv%': 'false',
+      # UV integration in C core is enabled by default. It can be disabled
+      # by setting this argument to anything else.
+      'grpc_uv%': 'true',
       # Some Node installations use the system installation of OpenSSL, and on
       # some systems, the system OpenSSL still does not have ALPN support. This
       # will let users recompile gRPC to work without ALPN.
@@ -90,6 +88,9 @@
       'conditions': [
         ['grpc_uv=="true"', {
           'defines': [
+            'GRPC_ARES=0',
+            # Disabling this while bugs are ironed out. Uncomment this to
+            # re-enable libuv integration in C core.
             'GRPC_UV'
           ]
         }],
@@ -146,7 +147,8 @@
         }],
         ['OS == "win"', {
           "include_dirs": [
-            "third_party/zlib"
+            "third_party/zlib",
+            "third_party/cares/cares"
           ],
           "defines": [
             '_WIN32_WINNT=0x0600',
@@ -166,7 +168,8 @@
           ]
         }, { # OS != "win"
           'include_dirs': [
-            '<(node_root_dir)/deps/zlib'
+            '<(node_root_dir)/deps/zlib',
+            '<(node_root_dir)/deps/cares/include'
           ]
         }]
       ]
@@ -258,6 +261,13 @@
       }]
     ],
     'targets': [
+  <%
+      for lib in libs:
+        if 'grpc' in lib.transitive_deps or lib.name == 'grpc':
+          lib.deps.append('node_modules/cares/deps/cares/cares.gyp:cares')
+      for module in node_modules:
+        module.deps.append('node_modules/cares/deps/cares/cares.gyp:cares')
+  %>
       % for module in node_modules:
       % for lib in libs:
       % if lib.name in module.transitive_deps and lib.name not in ('boringssl', 'z'):
diff --git a/templates/gRPC-Core.podspec.template b/templates/gRPC-Core.podspec.template
index 9ed32e31cffc6bb99202f48b13d109d807fb1317..cbebc5d005c1f9f81e2e6b14c4b6a9511523c5fd 100644
--- a/templates/gRPC-Core.podspec.template
+++ b/templates/gRPC-Core.podspec.template
@@ -78,7 +78,7 @@
       :submodules => true,
     }
 
-    s.ios.deployment_target = '7.1'
+    s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
     s.requires_arc = false
 
@@ -131,6 +131,7 @@
     }
 
     s.default_subspecs = 'Interface', 'Implementation'
+    s.compiler_flags = '-DGRPC_ARES=0'
 
     # Like many other C libraries, gRPC-Core has its public headers under `include/<libname>/` and its
     # sources and private headers in other directories outside `include/`. Cocoapods' linter doesn't
@@ -161,8 +162,7 @@
 
     s.subspec 'Cronet-Interface' do |ss|
       ss.header_mappings_dir = 'include/grpc'
-      ss.source_files = 'include/grpc/grpc_cronet.h',
-                        'src/core/ext/transport/cronet/transport/cronet_transport.h'
+      ss.source_files = 'include/grpc/grpc_cronet.h'
     end
 
     s.subspec 'Cronet-Implementation' do |ss|
@@ -173,7 +173,7 @@
       ss.dependency "#{s.name}/Cronet-Interface", version
 
       ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
-                        'src/core/ext/transport/cronet/transport/cronet_transport.c',
+                        'src/core/ext/transport/cronet/transport/cronet_transport.{c,h}',
                         'third_party/objective_c/Cronet/bidirectional_stream_c.h'
     end
 
@@ -188,7 +188,7 @@
                         'test/core/end2end/end2end_test_utils.c',
                         'test/core/end2end/tests/*.{c,h}',
                         'test/core/end2end/data/*.{c,h}',
-                        'test/core/util/debugger_macros.c',
+                        'test/core/util/debugger_macros.{c,h}',
                         'test/core/util/test_config.{c,h}',
                         'test/core/util/port.h',
                         'test/core/util/port.c',
diff --git a/templates/gRPC-ProtoRPC.podspec.template b/templates/gRPC-ProtoRPC.podspec.template
index 5d7d90d2318c31b1f1122d2648feccdd5ec65c2b..47b22dd2a52febb3c223ff0ce8a34cf5afcc5b3c 100644
--- a/templates/gRPC-ProtoRPC.podspec.template
+++ b/templates/gRPC-ProtoRPC.podspec.template
@@ -50,7 +50,7 @@
       :tag => "v#{version}",
     }
 
-    s.ios.deployment_target = '7.1'
+    s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
 
     name = 'ProtoRPC'
diff --git a/templates/gRPC-RxLibrary.podspec.template b/templates/gRPC-RxLibrary.podspec.template
index 35a06c8a856332fdbe86e72392cf9eece1dffae9..48f0df8f9e64af3ca7cb322f9154d75ce748e4d1 100644
--- a/templates/gRPC-RxLibrary.podspec.template
+++ b/templates/gRPC-RxLibrary.podspec.template
@@ -50,7 +50,7 @@
       :tag => "v#{version}",
     }
 
-    s.ios.deployment_target = '7.1'
+    s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
 
     name = 'RxLibrary'
diff --git a/templates/gRPC.podspec.template b/templates/gRPC.podspec.template
index d33ce277dc33e1fc44b4fbf15752bbb209ac7b5e..ce473608dd8996e72f08b02fe0e0c20308d192da 100644
--- a/templates/gRPC.podspec.template
+++ b/templates/gRPC.podspec.template
@@ -49,7 +49,7 @@
       :tag => "v#{version}",
     }
 
-    s.ios.deployment_target = '7.1'
+    s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
 
     name = 'GRPCClient'
diff --git a/templates/package.json.template b/templates/package.json.template
index 316c28e478efeaf4239dd5778851885459e35d78..d093883cf5a7df2000cfd300c0eaf2635878dc85 100644
--- a/templates/package.json.template
+++ b/templates/package.json.template
@@ -26,7 +26,7 @@
       "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"
+      "install": "./node_modules/.bin/node-pre-gyp install --fallback-to-build --library=static_library"
     },
     "bundledDependencies": [
       "node-pre-gyp"
@@ -36,7 +36,8 @@
       "lodash": "^4.15.0",
       "nan": "^2.0.0",
       "node-pre-gyp": "^0.6.0",
-      "protobufjs": "^5.0.0"
+      "protobufjs": "^5.0.0",
+      "cares": "^1.1.5"
     },
     "devDependencies": {
       "async": "^2.0.1",
@@ -54,7 +55,7 @@
       "poisson-process": "^0.2.1"
     },
     "engines": {
-      "node": ">=1.1.0"
+      "node": ">=4"
     },
     "binary": {
       "module_name": "grpc_node",
diff --git a/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template b/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
index 3a10cfab3cca31e21c5e0ad2e572bd80c7a5cecd..d7d84f3c774442378e8f3776d8c1251a46df9997 100644
--- a/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
+++ b/templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template
@@ -103,9 +103,9 @@
     s.preserve_paths = plugin
 
     # Restrict the protoc version to the one supported by this plugin.
-    s.dependency '!ProtoCompiler', '3.1.0'
+    s.dependency '!ProtoCompiler', '3.2.0'
     # For the Protobuf dependency not to complain:
-    s.ios.deployment_target = '7.1'
+    s.ios.deployment_target = '7.0'
     s.osx.deployment_target = '10.9'
     # Restrict the gRPC runtime version to the one supported by this plugin.
     s.dependency 'gRPC-ProtoRPC', v
diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
index 38a5ca725daf2636935f92135ff9da000f94a498..bf025d8037188cd92f24ae6415e79ecec6dcad32 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile.template
@@ -29,7 +29,7 @@
   # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   
-  FROM golang:1.5
+  FROM golang:latest
   
   <%include file="../../go_path.include"/>
   <%include file="../../python_deps.include"/>
diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
index 12b99844253cfd7515b7e6c09e672a8bede3ea29..b517921f08724fbc6f753b241052083f30f16b39 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
@@ -29,11 +29,11 @@
   # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   
-  FROM golang:1.5
+  FROM golang:latest
   
   <%include file="../../go_path.include"/>
   <%include file="../../python_deps.include"/>
-  RUN pip install twisted h2 hyper
+  RUN pip install twisted h2==2.6.1 hyper
 
   # Define the default command.
   CMD ["bash"]
diff --git a/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template b/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
index e02254cd53567b51dfbda412e73d3b1d266812d0..ad8ad71b5fab2ea955b43efcc4fccd0da08b3b1e 100644
--- a/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
+++ b/templates/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile.template
@@ -29,7 +29,7 @@
   # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   
-  FROM golang:1.5
+  FROM golang:latest
   
   <%include file="../../gcp_api_libraries.include"/>
   <%include file="../../python_deps.include"/>
diff --git a/templates/tools/dockerfile/test/multilang_jessie_x64/Dockerfile.template b/templates/tools/dockerfile/test/multilang_jessie_x64/Dockerfile.template
index fdf44312ec31845d88f83301eb739153a8605684..93d26b559453a99c04bf74451654fc3bd5cd0848 100644
--- a/templates/tools/dockerfile/test/multilang_jessie_x64/Dockerfile.template
+++ b/templates/tools/dockerfile/test/multilang_jessie_x64/Dockerfile.template
@@ -38,6 +38,10 @@
   <%include file="../../php_deps.include"/>
   <%include file="../../ruby_deps.include"/>
   <%include file="../../python_deps.include"/>
+  # Install coverage for Python test coverage reporting
+  RUN pip install coverage
+  ENV PATH ~/.local/bin:$PATH
+
   <%include file="../../run_tests_addons.include"/>
   # Define the default command.
   CMD ["bash"]
diff --git a/test/build/c-ares.c b/test/build/c-ares.c
new file mode 100644
index 0000000000000000000000000000000000000000..c954e9397f8ac50d25fa137556b58fd0c61b192f
--- /dev/null
+++ b/test/build/c-ares.c
@@ -0,0 +1,43 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#include <ares.h>
+
+int main(void) {
+  ares_channel channelptr;
+
+  ares_init(&channelptr);
+  ares_destroy(channelptr);
+
+  return 0;
+}
diff --git a/test/core/bad_ssl/servers/cert.c b/test/core/bad_ssl/servers/cert.c
index 9aadf452e2c32beb20971eef39f27af9f0f07cf6..2b014b23431544ebb739190f43782ad6467373ef 100644
--- a/test/core/bad_ssl/servers/cert.c
+++ b/test/core/bad_ssl/servers/cert.c
@@ -56,11 +56,11 @@ int main(int argc, char **argv) {
   grpc_init();
 
   GPR_ASSERT(GRPC_LOG_IF_ERROR(
-      "load_file", grpc_load_file("src/core/lib/tsi/test_creds/badserver.pem",
-                                  1, &cert_slice)));
+      "load_file",
+      grpc_load_file("src/core/tsi/test_creds/badserver.pem", 1, &cert_slice)));
   GPR_ASSERT(GRPC_LOG_IF_ERROR(
-      "load_file", grpc_load_file("src/core/lib/tsi/test_creds/badserver.key",
-                                  1, &key_slice)));
+      "load_file",
+      grpc_load_file("src/core/tsi/test_creds/badserver.key", 1, &key_slice)));
   pem_key_cert_pair.private_key = (const char *)GRPC_SLICE_START_PTR(key_slice);
   pem_key_cert_pair.cert_chain = (const char *)GRPC_SLICE_START_PTR(cert_slice);
 
diff --git a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
index b85ca89337d73aae4791e1d810b64769daf77d60..8449afcbbe6059091ab6f225ca30dc7e8d2bb2a0 100644
--- a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
+++ b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
@@ -48,22 +48,26 @@ static gpr_mu g_mu;
 static bool g_fail_resolution = true;
 static grpc_combiner *g_combiner;
 
-static grpc_error *my_resolve_address(const char *name, const char *addr,
-                                      grpc_resolved_addresses **addrs) {
+static void my_resolve_address(grpc_exec_ctx *exec_ctx, const char *addr,
+                               const char *default_port,
+                               grpc_pollset_set *interested_parties,
+                               grpc_closure *on_done,
+                               grpc_resolved_addresses **addrs) {
   gpr_mu_lock(&g_mu);
-  GPR_ASSERT(0 == strcmp("test", name));
+  GPR_ASSERT(0 == strcmp("test", addr));
+  grpc_error *error = GRPC_ERROR_NONE;
   if (g_fail_resolution) {
     g_fail_resolution = false;
     gpr_mu_unlock(&g_mu);
-    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Failure");
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Failure");
   } else {
     gpr_mu_unlock(&g_mu);
     *addrs = gpr_malloc(sizeof(**addrs));
     (*addrs)->naddrs = 1;
     (*addrs)->addrs = gpr_malloc(sizeof(*(*addrs)->addrs));
     (*addrs)->addrs[0].len = 123;
-    return GRPC_ERROR_NONE;
   }
+  grpc_closure_sched(exec_ctx, on_done, error);
 }
 
 static grpc_resolver *create_resolver(grpc_exec_ctx *exec_ctx,
@@ -135,7 +139,7 @@ int main(int argc, char **argv) {
   grpc_init();
   gpr_mu_init(&g_mu);
   g_combiner = grpc_combiner_create(NULL);
-  grpc_blocking_resolve_address = my_resolve_address;
+  grpc_resolve_address = my_resolve_address;
   grpc_channel_args *result = (grpc_channel_args *)1;
 
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/test/core/end2end/connection_refused_test.c b/test/core/end2end/connection_refused_test.c
index 16a3005539b8224bbc37d0d74ac2a82dd029b8ad..6ded12ad480587f02fd055d7fc8498d69d4ec892 100644
--- a/test/core/end2end/connection_refused_test.c
+++ b/test/core/end2end/connection_refused_test.c
@@ -53,7 +53,6 @@ static void *tag(intptr_t i) { return (void *)i; }
 static void run_test(bool wait_for_ready, bool use_service_config) {
   grpc_channel *chan;
   grpc_call *call;
-  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(2);
   grpc_completion_queue *cq;
   cq_verifier *cqv;
   grpc_op ops[6];
@@ -98,6 +97,7 @@ static void run_test(bool wait_for_ready, bool use_service_config) {
   gpr_log(GPR_INFO, "server: %s", addr);
   chan = grpc_insecure_channel_create(addr, args, NULL);
   grpc_slice host = grpc_slice_from_static_string("nonexistant");
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(2);
   call = grpc_channel_create_call(
       chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
       grpc_slice_from_static_string("/service/method"), &host, deadline, NULL);
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index b351bdee27734f7a5b6d632983e57c2322354f0a..64bdceb211174f2d5c89d7988cc56b2464d79d2b 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -97,6 +97,10 @@ extern void load_reporting_hook(grpc_end2end_test_config config);
 extern void load_reporting_hook_pre_init(void);
 extern void max_concurrent_streams(grpc_end2end_test_config config);
 extern void max_concurrent_streams_pre_init(void);
+extern void max_connection_age(grpc_end2end_test_config config);
+extern void max_connection_age_pre_init(void);
+extern void max_connection_idle(grpc_end2end_test_config config);
+extern void max_connection_idle_pre_init(void);
 extern void max_message_length(grpc_end2end_test_config config);
 extern void max_message_length_pre_init(void);
 extern void negative_deadline(grpc_end2end_test_config config);
@@ -174,6 +178,8 @@ void grpc_end2end_tests_pre_init(void) {
   large_metadata_pre_init();
   load_reporting_hook_pre_init();
   max_concurrent_streams_pre_init();
+  max_connection_age_pre_init();
+  max_connection_idle_pre_init();
   max_message_length_pre_init();
   negative_deadline_pre_init();
   network_status_change_pre_init();
@@ -232,6 +238,8 @@ void grpc_end2end_tests(int argc, char **argv,
     large_metadata(config);
     load_reporting_hook(config);
     max_concurrent_streams(config);
+    max_connection_age(config);
+    max_connection_idle(config);
     max_message_length(config);
     negative_deadline(config);
     network_status_change(config);
@@ -363,6 +371,14 @@ void grpc_end2end_tests(int argc, char **argv,
       max_concurrent_streams(config);
       continue;
     }
+    if (0 == strcmp("max_connection_age", argv[i])) {
+      max_connection_age(config);
+      continue;
+    }
+    if (0 == strcmp("max_connection_idle", argv[i])) {
+      max_connection_idle(config);
+      continue;
+    }
     if (0 == strcmp("max_message_length", argv[i])) {
       max_message_length(config);
       continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index 199c09ec96ad8cc58ccc2e422ea727b311ba689a..37c1be4133788f88c64d9fa5639cda7ee27388e0 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -99,6 +99,10 @@ extern void load_reporting_hook(grpc_end2end_test_config config);
 extern void load_reporting_hook_pre_init(void);
 extern void max_concurrent_streams(grpc_end2end_test_config config);
 extern void max_concurrent_streams_pre_init(void);
+extern void max_connection_age(grpc_end2end_test_config config);
+extern void max_connection_age_pre_init(void);
+extern void max_connection_idle(grpc_end2end_test_config config);
+extern void max_connection_idle_pre_init(void);
 extern void max_message_length(grpc_end2end_test_config config);
 extern void max_message_length_pre_init(void);
 extern void negative_deadline(grpc_end2end_test_config config);
@@ -177,6 +181,8 @@ void grpc_end2end_tests_pre_init(void) {
   large_metadata_pre_init();
   load_reporting_hook_pre_init();
   max_concurrent_streams_pre_init();
+  max_connection_age_pre_init();
+  max_connection_idle_pre_init();
   max_message_length_pre_init();
   negative_deadline_pre_init();
   network_status_change_pre_init();
@@ -236,6 +242,8 @@ void grpc_end2end_tests(int argc, char **argv,
     large_metadata(config);
     load_reporting_hook(config);
     max_concurrent_streams(config);
+    max_connection_age(config);
+    max_connection_idle(config);
     max_message_length(config);
     negative_deadline(config);
     network_status_change(config);
@@ -371,6 +379,14 @@ void grpc_end2end_tests(int argc, char **argv,
       max_concurrent_streams(config);
       continue;
     }
+    if (0 == strcmp("max_connection_age", argv[i])) {
+      max_connection_age(config);
+      continue;
+    }
+    if (0 == strcmp("max_connection_idle", argv[i])) {
+      max_connection_idle(config);
+      continue;
+    }
     if (0 == strcmp("max_message_length", argv[i])) {
       max_message_length(config);
       continue;
diff --git a/test/core/end2end/fuzzers/api_fuzzer.c b/test/core/end2end/fuzzers/api_fuzzer.c
index 9cc3f564377863acee0339469bfb928c36cfbcaa..a0acf5bf6020b728b748a83a9d5213481abefabf 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.c
+++ b/test/core/end2end/fuzzers/api_fuzzer.c
@@ -719,10 +719,10 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   grpc_test_only_set_slice_hash_seed(0);
   if (squelch) gpr_set_log_function(dont_log);
   input_stream inp = {data, data + size};
-  grpc_resolve_address = my_resolve_address;
   grpc_tcp_client_connect_impl = my_tcp_client_connect;
   gpr_now_impl = now_impl;
   grpc_init();
+  grpc_resolve_address = my_resolve_address;
 
   GPR_ASSERT(g_channel == NULL);
   GPR_ASSERT(g_server == NULL);
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5242554383597568 b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5242554383597568
new file mode 100644
index 0000000000000000000000000000000000000000..95a0b013c0d70eb7beef850d3adeb821d35f1a71
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5242554383597568 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5965570207907840 b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5965570207907840
new file mode 100644
index 0000000000000000000000000000000000000000..a58dc7b2442fc21b5bbdf2de959c4e2625408e6b
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5965570207907840 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6499902139924480 b/test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6499902139924480
new file mode 100644
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diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 0c749537e60e6c9b6064065a712919749504f056..3c5068ff3e3230cf5f8b0bc2928a0f08e2619c40 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -122,6 +122,9 @@ END2END_TESTS = {
     'keepalive_timeout': default_test_options._replace(proxyable=False),
     'large_metadata': default_test_options,
     'max_concurrent_streams': default_test_options._replace(proxyable=False),
+    'max_connection_age': default_test_options,
+    'max_connection_idle': connectivity_test_options._replace(
+        proxyable=False, exclude_iomgrs=['uv']),
     'max_message_length': default_test_options,
     'negative_deadline': default_test_options,
     'network_status_change': default_test_options,
diff --git a/test/core/end2end/generate_tests.bzl b/test/core/end2end/generate_tests.bzl
index 431c6995ba0a390ae5df57b0ff565d61ffa3bb2c..1041219f0394f6c4d0d951991c2c99e4adbb22d7 100755
--- a/test/core/end2end/generate_tests.bzl
+++ b/test/core/end2end/generate_tests.bzl
@@ -109,6 +109,8 @@ END2END_TESTS = {
     'keepalive_timeout': test_options(proxyable=False),
     'large_metadata': test_options(),
     'max_concurrent_streams': test_options(proxyable=False),
+    'max_connection_age': test_options(),
+    'max_connection_idle': test_options(needs_fullstack=True, proxyable=False),
     'max_message_length': test_options(),
     'negative_deadline': test_options(),
     'network_status_change': test_options(),
diff --git a/test/core/end2end/goaway_server_test.c b/test/core/end2end/goaway_server_test.c
index 4bb258e3ed79fe53d157d2b37d25257822b4e8f1..22d93b321a605bc9778cc8063898ce58467510ad 100644
--- a/test/core/end2end/goaway_server_test.c
+++ b/test/core/end2end/goaway_server_test.c
@@ -52,9 +52,11 @@ static void *tag(intptr_t i) { return (void *)i; }
 
 static gpr_mu g_mu;
 static int g_resolve_port = -1;
-static grpc_error *(*iomgr_resolve_address)(const char *name,
-                                            const char *default_port,
-                                            grpc_resolved_addresses **addrs);
+static void (*iomgr_resolve_address)(grpc_exec_ctx *exec_ctx, const char *addr,
+                                     const char *default_port,
+                                     grpc_pollset_set *interested_parties,
+                                     grpc_closure *on_done,
+                                     grpc_resolved_addresses **addresses);
 
 static void set_resolve_port(int port) {
   gpr_mu_lock(&g_mu);
@@ -62,16 +64,22 @@ static void set_resolve_port(int port) {
   gpr_mu_unlock(&g_mu);
 }
 
-static grpc_error *my_resolve_address(const char *name, const char *addr,
-                                      grpc_resolved_addresses **addrs) {
-  if (0 != strcmp(name, "test")) {
-    return iomgr_resolve_address(name, addr, addrs);
+static void my_resolve_address(grpc_exec_ctx *exec_ctx, const char *addr,
+                               const char *default_port,
+                               grpc_pollset_set *interested_parties,
+                               grpc_closure *on_done,
+                               grpc_resolved_addresses **addrs) {
+  if (0 != strcmp(addr, "test")) {
+    iomgr_resolve_address(exec_ctx, addr, default_port, interested_parties,
+                          on_done, addrs);
+    return;
   }
 
+  grpc_error *error = GRPC_ERROR_NONE;
   gpr_mu_lock(&g_mu);
   if (g_resolve_port < 0) {
     gpr_mu_unlock(&g_mu);
-    return GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Failure");
+    error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Failure");
   } else {
     *addrs = gpr_malloc(sizeof(**addrs));
     (*addrs)->naddrs = 1;
@@ -83,8 +91,8 @@ static grpc_error *my_resolve_address(const char *name, const char *addr,
     sa->sin_port = htons((uint16_t)g_resolve_port);
     (*addrs)->addrs[0].len = sizeof(*sa);
     gpr_mu_unlock(&g_mu);
-    return GRPC_ERROR_NONE;
   }
+  grpc_closure_sched(exec_ctx, on_done, error);
 }
 
 int main(int argc, char **argv) {
@@ -96,9 +104,9 @@ int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
 
   gpr_mu_init(&g_mu);
-  iomgr_resolve_address = grpc_blocking_resolve_address;
-  grpc_blocking_resolve_address = my_resolve_address;
   grpc_init();
+  iomgr_resolve_address = grpc_resolve_address;
+  grpc_resolve_address = my_resolve_address;
 
   int was_cancelled1;
   int was_cancelled2;
diff --git a/test/core/end2end/tests/keepalive_timeout.c b/test/core/end2end/tests/keepalive_timeout.c
index 4296be361903c4baa96dd636f70ae63c3c5dbc4a..44b6e12abc7f4900443e106a3adbe8e7fa6a4ff5 100644
--- a/test/core/end2end/tests/keepalive_timeout.c
+++ b/test/core/end2end/tests/keepalive_timeout.c
@@ -41,6 +41,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include "src/core/ext/transport/chttp2/transport/frame_ping.h"
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/support/env.h"
@@ -109,13 +110,15 @@ static void test_keepalive_timeout(grpc_end2end_test_config config) {
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
 
-  grpc_arg keepalive_args[2];
-  keepalive_args[0].type = GRPC_ARG_INTEGER;
-  keepalive_args[0].key = GRPC_ARG_HTTP2_KEEPALIVE_TIME;
-  keepalive_args[0].value.integer = 2;
-  keepalive_args[1].type = GRPC_ARG_INTEGER;
-  keepalive_args[1].key = GRPC_ARG_HTTP2_KEEPALIVE_TIMEOUT;
-  keepalive_args[1].value.integer = 0;
+  grpc_arg keepalive_args[] = {{.type = GRPC_ARG_INTEGER,
+                                .key = GRPC_ARG_CLIENT_KEEPALIVE_TIME_S,
+                                .value.integer = 2},
+                               {.type = GRPC_ARG_INTEGER,
+                                .key = GRPC_ARG_CLIENT_KEEPALIVE_TIMEOUT_S,
+                                .value.integer = 0},
+                               {.type = GRPC_ARG_INTEGER,
+                                .key = GRPC_ARG_HTTP2_BDP_PROBE,
+                                .value.integer = 1}};
 
   grpc_channel_args *client_args = NULL;
   client_args = grpc_channel_args_copy_and_add(client_args, keepalive_args, 2);
@@ -134,6 +137,9 @@ static void test_keepalive_timeout(grpc_end2end_test_config config) {
   grpc_call_error error;
   grpc_slice details;
 
+  /* Disable ping ack to trigger the keepalive timeout */
+  grpc_set_disable_ping_ack(true);
+
   c = grpc_channel_create_call(
       f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
       grpc_slice_from_static_string("/foo"),
diff --git a/test/core/end2end/tests/max_connection_age.c b/test/core/end2end/tests/max_connection_age.c
new file mode 100644
index 0000000000000000000000000000000000000000..1de54e082522b1ba6026920d2804509466f2584a
--- /dev/null
+++ b/test/core/end2end/tests/max_connection_age.c
@@ -0,0 +1,380 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "test/core/end2end/cq_verifier.h"
+
+#define MAX_CONNECTION_AGE_MS 500
+#define MAX_CONNECTION_AGE_GRACE_MS 1000
+#define MAX_CONNECTION_IDLE_MS 9999
+
+#define CALL_DEADLINE_S 10
+/* The amount of time we wait for the connection to time out, but after it the
+   connection should not use up its grace period. It should be a number between
+   MAX_CONNECTION_AGE_MS and MAX_CONNECTION_AGE_MS +
+   MAX_CONNECTION_AGE_GRACE_MS */
+#define CQ_MAX_CONNECTION_AGE_WAIT_TIME_S 1
+/* The amount of time we wait after the connection reaches its max age, it
+   should be shorter than CALL_DEADLINE_S - CQ_MAX_CONNECTION_AGE_WAIT_TIME_S */
+#define CQ_MAX_CONNECTION_AGE_GRACE_WAIT_TIME_S 2
+/* The grace period for the test to observe the channel shutdown process */
+#define IMMEDIATE_SHUTDOWN_GRACE_TIME_MS 300
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5),
+                                    NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+static void test_max_age_forcibly_close(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_arg server_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_AGE_MS,
+                          .value.integer = MAX_CONNECTION_AGE_MS},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS,
+                          .value.integer = MAX_CONNECTION_AGE_GRACE_MS},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_IDLE_MS,
+                          .value.integer = MAX_CONNECTION_IDLE_MS}};
+  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
+                                   .args = server_a};
+
+  config.init_client(&f, NULL);
+  config.init_server(&f, &server_args);
+
+  grpc_call *c;
+  grpc_call *s;
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(CALL_DEADLINE_S);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), true);
+  cq_verify(cqv);
+
+  gpr_timespec expect_shutdown_time = grpc_timeout_milliseconds_to_deadline(
+      MAX_CONNECTION_AGE_MS + MAX_CONNECTION_AGE_GRACE_MS +
+      IMMEDIATE_SHUTDOWN_GRACE_TIME_MS);
+
+  /* Wait for the channel to reach its max age */
+  cq_verify_empty_timeout(cqv, CQ_MAX_CONNECTION_AGE_WAIT_TIME_S);
+
+  /* After the channel reaches its max age, we still do nothing here. And wait
+     for it to use up its max age grace period. */
+  CQ_EXPECT_COMPLETION(cqv, tag(1), true);
+  cq_verify(cqv);
+
+  gpr_timespec channel_shutdown_time = gpr_now(GPR_CLOCK_MONOTONIC);
+  GPR_ASSERT(gpr_time_cmp(channel_shutdown_time, expect_shutdown_time) < 0);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(102), true);
+  cq_verify(cqv);
+
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
+  CQ_EXPECT_COMPLETION(cqv, tag(0xdead), true);
+  cq_verify(cqv);
+
+  grpc_call_destroy(s);
+
+  /* The connection should be closed immediately after the max age grace period,
+     the in-progress RPC should fail. */
+  GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "Endpoint read failed"));
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 1);
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_call_destroy(c);
+  cq_verifier_destroy(cqv);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void test_max_age_gracefully_close(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_arg server_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_AGE_MS,
+                          .value.integer = MAX_CONNECTION_AGE_MS},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS,
+                          .value.integer = INT_MAX},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_IDLE_MS,
+                          .value.integer = MAX_CONNECTION_IDLE_MS}};
+  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
+                                   .args = server_a};
+
+  config.init_client(&f, NULL);
+  config.init_server(&f, &server_args);
+
+  grpc_call *c;
+  grpc_call *s;
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(CALL_DEADLINE_S);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+
+  c = grpc_channel_create_call(
+      f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+      grpc_slice_from_static_string("/foo"),
+      get_host_override_slice("foo.test.google.fr:1234", config), deadline,
+      NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  CQ_EXPECT_COMPLETION(cqv, tag(101), true);
+  cq_verify(cqv);
+
+  /* Wait for the channel to reach its max age */
+  cq_verify_empty_timeout(cqv, CQ_MAX_CONNECTION_AGE_WAIT_TIME_S);
+
+  /* The connection is shutting down gracefully. In-progress rpc should not be
+     closed, hence the completion queue should see nothing here. */
+  cq_verify_empty_timeout(cqv, CQ_MAX_CONNECTION_AGE_GRACE_WAIT_TIME_S);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  grpc_slice status_details = grpc_slice_from_static_string("xyz");
+  op->data.send_status_from_server.status_details = &status_details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(102), true);
+  CQ_EXPECT_COMPLETION(cqv, tag(1), true);
+  cq_verify(cqv);
+
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
+  CQ_EXPECT_COMPLETION(cqv, tag(0xdead), true);
+  cq_verify(cqv);
+
+  grpc_call_destroy(s);
+
+  /* The connection is closed gracefully with goaway, the rpc should still be
+     completed. */
+  GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+  GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
+  GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+  validate_host_override_string("foo.test.google.fr:1234", call_details.host,
+                                config);
+  GPR_ASSERT(was_cancelled == 1);
+
+  grpc_slice_unref(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+  grpc_call_destroy(c);
+  cq_verifier_destroy(cqv);
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void max_connection_age(grpc_end2end_test_config config) {
+  test_max_age_forcibly_close(config);
+  test_max_age_gracefully_close(config);
+}
+
+void max_connection_age_pre_init(void) {}
diff --git a/test/core/end2end/tests/max_connection_idle.c b/test/core/end2end/tests/max_connection_idle.c
new file mode 100644
index 0000000000000000000000000000000000000000..9dc1ee47664e038bf27ca9deeadff927f504655f
--- /dev/null
+++ b/test/core/end2end/tests/max_connection_idle.c
@@ -0,0 +1,117 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <limits.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "test/core/end2end/cq_verifier.h"
+
+#define MAX_CONNECTION_IDLE_MS 500
+#define MAX_CONNECTION_AGE_MS 9999
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static void test_max_connection_idle(grpc_end2end_test_config config) {
+  grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
+  grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+
+  grpc_arg client_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = "grpc.testing.fixed_reconnect_backoff_ms",
+                          .value.integer = 1000}};
+  grpc_arg server_a[] = {{.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_IDLE_MS,
+                          .value.integer = MAX_CONNECTION_IDLE_MS},
+                         {.type = GRPC_ARG_INTEGER,
+                          .key = GRPC_ARG_MAX_CONNECTION_AGE_MS,
+                          .value.integer = MAX_CONNECTION_AGE_MS}};
+  grpc_channel_args client_args = {.num_args = GPR_ARRAY_SIZE(client_a),
+                                   .args = client_a};
+  grpc_channel_args server_args = {.num_args = GPR_ARRAY_SIZE(server_a),
+                                   .args = server_a};
+
+  config.init_client(&f, &client_args);
+  config.init_server(&f, &server_args);
+
+  /* check that we're still in idle, and start connecting */
+  GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 1) ==
+             GRPC_CHANNEL_IDLE);
+  /* we'll go through some set of transitions (some might be missed), until
+     READY is reached */
+  while (state != GRPC_CHANNEL_READY) {
+    grpc_channel_watch_connectivity_state(
+        f.client, state, grpc_timeout_seconds_to_deadline(3), f.cq, tag(99));
+    CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
+    cq_verify(cqv);
+    state = grpc_channel_check_connectivity_state(f.client, 0);
+    GPR_ASSERT(state == GRPC_CHANNEL_READY ||
+               state == GRPC_CHANNEL_CONNECTING ||
+               state == GRPC_CHANNEL_TRANSIENT_FAILURE);
+  }
+
+  /* wait for the channel to reach its maximum idle time */
+  grpc_channel_watch_connectivity_state(
+      f.client, GRPC_CHANNEL_READY,
+      grpc_timeout_milliseconds_to_deadline(MAX_CONNECTION_IDLE_MS + 500), f.cq,
+      tag(99));
+  CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
+  cq_verify(cqv);
+  state = grpc_channel_check_connectivity_state(f.client, 0);
+  GPR_ASSERT(state == GRPC_CHANNEL_TRANSIENT_FAILURE ||
+             state == GRPC_CHANNEL_CONNECTING || state == GRPC_CHANNEL_IDLE);
+
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
+  CQ_EXPECT_COMPLETION(cqv, tag(0xdead), 1);
+  cq_verify(cqv);
+
+  grpc_server_destroy(f.server);
+  grpc_channel_destroy(f.client);
+  grpc_completion_queue_shutdown(f.cq);
+  grpc_completion_queue_destroy(f.cq);
+  config.tear_down_data(&f);
+
+  cq_verifier_destroy(cqv);
+}
+
+void max_connection_idle(grpc_end2end_test_config config) {
+  test_max_connection_idle(config);
+}
+
+void max_connection_idle_pre_init(void) {}
diff --git a/test/core/end2end/tests/ping.c b/test/core/end2end/tests/ping.c
index f5bfac2255c8c69d87485640dab4a666af3d3f71..082ac641f0bb98a0344e847c54a0a64f1e12b46c 100644
--- a/test/core/end2end/tests/ping.c
+++ b/test/core/end2end/tests/ping.c
@@ -41,9 +41,12 @@
 
 #include "test/core/end2end/cq_verifier.h"
 
+#define PING_NUM 5
+
 static void *tag(intptr_t t) { return (void *)t; }
 
-static void test_ping(grpc_end2end_test_config config) {
+static void test_ping(grpc_end2end_test_config config,
+                      int min_time_between_pings_ms) {
   grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
   cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_connectivity_state state = GRPC_CHANNEL_IDLE;
@@ -51,7 +54,7 @@ static void test_ping(grpc_end2end_test_config config) {
 
   grpc_arg a[] = {{.type = GRPC_ARG_INTEGER,
                    .key = GRPC_ARG_HTTP2_MIN_TIME_BETWEEN_PINGS_MS,
-                   .value.integer = 0},
+                   .value.integer = min_time_between_pings_ms},
                   {.type = GRPC_ARG_INTEGER,
                    .key = GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA,
                    .value.integer = 20}};
@@ -70,7 +73,11 @@ static void test_ping(grpc_end2end_test_config config) {
      READY is reached */
   while (state != GRPC_CHANNEL_READY) {
     grpc_channel_watch_connectivity_state(
-        f.client, state, grpc_timeout_seconds_to_deadline(3), f.cq, tag(99));
+        f.client, state,
+        gpr_time_add(grpc_timeout_seconds_to_deadline(3),
+                     gpr_time_from_millis(min_time_between_pings_ms * PING_NUM,
+                                          GPR_TIMESPAN)),
+        f.cq, tag(99));
     CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
     cq_verify(cqv);
     state = grpc_channel_check_connectivity_state(f.client, 0);
@@ -79,7 +86,7 @@ static void test_ping(grpc_end2end_test_config config) {
                state == GRPC_CHANNEL_TRANSIENT_FAILURE);
   }
 
-  for (i = 1; i <= 5; i++) {
+  for (i = 1; i <= PING_NUM; i++) {
     grpc_channel_ping(f.client, f.cq, tag(i), NULL);
     CQ_EXPECT_COMPLETION(cqv, tag(i), 1);
     cq_verify(cqv);
@@ -102,7 +109,8 @@ static void test_ping(grpc_end2end_test_config config) {
 
 void ping(grpc_end2end_test_config config) {
   GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION);
-  test_ping(config);
+  test_ping(config, 0);
+  test_ping(config, 100);
 }
 
 void ping_pre_init(void) {}
diff --git a/test/core/handshake/BUILD b/test/core/handshake/BUILD
index eb8f3a9beb950cbb9471ef41d0856c3d3bb2cd2a..996b503d353c39743d5dd6ab1b3f7f3e7b31181d 100644
--- a/test/core/handshake/BUILD
+++ b/test/core/handshake/BUILD
@@ -34,9 +34,9 @@ cc_test(
     srcs = ["client_ssl.c"],
     copts = ["-std=c99"],
     data = [
-        "//src/core/lib/tsi/test_creds:ca.pem",
-        "//src/core/lib/tsi/test_creds:server1.key",
-        "//src/core/lib/tsi/test_creds:server1.pem",
+        "//src/core/tsi/test_creds:ca.pem",
+        "//src/core/tsi/test_creds:server1.key",
+        "//src/core/tsi/test_creds:server1.pem",
     ],
     deps = [
         "//:gpr",
@@ -51,9 +51,9 @@ cc_test(
     srcs = ["server_ssl.c"],
     copts = ["-std=c99"],
     data = [
-        "//src/core/lib/tsi/test_creds:ca.pem",
-        "//src/core/lib/tsi/test_creds:server1.key",
-        "//src/core/lib/tsi/test_creds:server1.pem",
+        "//src/core/tsi/test_creds:ca.pem",
+        "//src/core/tsi/test_creds:server1.key",
+        "//src/core/tsi/test_creds:server1.pem",
     ],
     deps = [
         "//:gpr",
diff --git a/test/core/handshake/client_ssl.c b/test/core/handshake/client_ssl.c
index 5cfe60de4befb5e58b2cb8d6ec997ce1f7983a9b..f291d09493be15a5756620261e5aae52b85687f6 100644
--- a/test/core/handshake/client_ssl.c
+++ b/test/core/handshake/client_ssl.c
@@ -54,9 +54,9 @@
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
-#define SSL_CERT_PATH "src/core/lib/tsi/test_creds/server1.pem"
-#define SSL_KEY_PATH "src/core/lib/tsi/test_creds/server1.key"
-#define SSL_CA_PATH "src/core/lib/tsi/test_creds/ca.pem"
+#define SSL_CERT_PATH "src/core/tsi/test_creds/server1.pem"
+#define SSL_KEY_PATH "src/core/tsi/test_creds/server1.key"
+#define SSL_CA_PATH "src/core/tsi/test_creds/ca.pem"
 
 // Arguments for TLS server thread.
 typedef struct {
@@ -146,7 +146,7 @@ static int alpn_select_cb(SSL *ssl, const uint8_t **out, uint8_t *out_len,
 
 // Minimal TLS server. This is largely based on the example at
 // https://wiki.openssl.org/index.php/Simple_TLS_Server and the gRPC core
-// internals in src/core/lib/tsi/ssl_transport_security.c.
+// internals in src/core/tsi/ssl_transport_security.c.
 static void server_thread(void *arg) {
   const server_args *args = (server_args *)arg;
 
@@ -172,7 +172,7 @@ static void server_thread(void *arg) {
   }
 
   // Set the cipher list to match the one expressed in
-  // src/core/lib/tsi/ssl_transport_security.c.
+  // src/core/tsi/ssl_transport_security.c.
   const char *cipher_list =
       "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-"
       "SHA384:ECDHE-RSA-AES256-GCM-SHA384";
diff --git a/test/core/handshake/server_ssl.c b/test/core/handshake/server_ssl.c
index 0bd5a03cffeca710ad00822e110f03934bc23ccd..e568a370145616e6c577e40e0b1eacbc9819ce0d 100644
--- a/test/core/handshake/server_ssl.c
+++ b/test/core/handshake/server_ssl.c
@@ -49,9 +49,9 @@
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
-#define SSL_CERT_PATH "src/core/lib/tsi/test_creds/server1.pem"
-#define SSL_KEY_PATH "src/core/lib/tsi/test_creds/server1.key"
-#define SSL_CA_PATH "src/core/lib/tsi/test_creds/ca.pem"
+#define SSL_CERT_PATH "src/core/tsi/test_creds/server1.pem"
+#define SSL_KEY_PATH "src/core/tsi/test_creds/server1.key"
+#define SSL_CA_PATH "src/core/tsi/test_creds/ca.pem"
 
 // Handshake completed signal to server thread.
 static gpr_event client_handshake_complete;
@@ -174,7 +174,7 @@ static bool server_ssl_test(const char *alpn_list[], unsigned int alpn_list_len,
   }
 
   // Set the cipher list to match the one expressed in
-  // src/core/lib/tsi/ssl_transport_security.c.
+  // src/core/tsi/ssl_transport_security.c.
   const char *cipher_list =
       "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-"
       "SHA384:ECDHE-RSA-AES256-GCM-SHA384";
diff --git a/test/core/http/httpcli_test.c b/test/core/http/httpcli_test.c
index f690dbaffbcebd8aa3e9528e834afed67dcbc872..d3b45c45056da5c6fc1554521c1b8c0daacb3159 100644
--- a/test/core/http/httpcli_test.c
+++ b/test/core/http/httpcli_test.c
@@ -102,7 +102,7 @@ static void test_get(int port) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                           &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                          n_seconds_time(20))));
+                          n_seconds_time(1))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_finish(&exec_ctx);
     gpr_mu_lock(g_mu);
@@ -144,7 +144,7 @@ static void test_post(int port) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                           &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                          n_seconds_time(20))));
+                          n_seconds_time(1))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_finish(&exec_ctx);
     gpr_mu_lock(g_mu);
diff --git a/test/core/http/httpscli_test.c b/test/core/http/httpscli_test.c
index 549411037e56b0e377ec252c44808a8dfe55365c..acc94091f4e44f1317748ce92fc2851ac54f6d5d 100644
--- a/test/core/http/httpscli_test.c
+++ b/test/core/http/httpscli_test.c
@@ -103,7 +103,7 @@ static void test_get(int port) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                           &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                          n_seconds_time(20))));
+                          n_seconds_time(1))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_finish(&exec_ctx);
     gpr_mu_lock(g_mu);
@@ -146,7 +146,7 @@ static void test_post(int port) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&g_pops),
                           &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                          n_seconds_time(20))));
+                          n_seconds_time(1))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_finish(&exec_ctx);
     gpr_mu_lock(g_mu);
diff --git a/test/core/http/test_server.py b/test/core/http/test_server.py
index 86c2fe96bf9c2c66bf2843a49add7ae7049db62d..dbbf5ceb3c7975b19941d72590107e9643d0daf3 100755
--- a/test/core/http/test_server.py
+++ b/test/core/http/test_server.py
@@ -36,8 +36,8 @@ import os
 import ssl
 import sys
 
-_PEM = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../../..', 'src/core/lib/tsi/test_creds/server1.pem'))
-_KEY = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../../..', 'src/core/lib/tsi/test_creds/server1.key'))
+_PEM = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../../..', 'src/core/tsi/test_creds/server1.pem'))
+_KEY = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../../..', 'src/core/tsi/test_creds/server1.key'))
 print _PEM
 open(_PEM).close()
 
diff --git a/test/core/iomgr/ev_epoll_linux_test.c b/test/core/iomgr/ev_epoll_linux_test.c
index d69f9a9d15cc76b8ef2076e4219f2882df1973b9..5f8124aedaef672507caedfc40e467037e00058c 100644
--- a/test/core/iomgr/ev_epoll_linux_test.c
+++ b/test/core/iomgr/ev_epoll_linux_test.c
@@ -43,6 +43,8 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/useful.h>
 
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/iomgr/workqueue.h"
@@ -139,23 +141,25 @@ static void increment(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
  * polling_island_merge()[ev_epoll_linux.c], where the parent relationship was
  * inverted.
  */
+
+#define NUM_FDS 2
+#define NUM_POLLSETS 2
+#define NUM_CLOSURES 4
+
 static void test_pollset_queue_merge_items() {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  const int num_fds = 2;
-  const int num_pollsets = 2;
-  const int num_closures = 4;
-  test_fd tfds[num_fds];
-  int fds[num_fds];
-  test_pollset pollsets[num_pollsets];
-  grpc_closure closures[num_closures];
+  test_fd tfds[NUM_FDS];
+  int fds[NUM_FDS];
+  test_pollset pollsets[NUM_POLLSETS];
+  grpc_closure closures[NUM_CLOSURES];
   int i;
   int result = 0;
 
-  test_fd_init(tfds, fds, num_fds);
-  test_pollset_init(pollsets, num_pollsets);
+  test_fd_init(tfds, fds, NUM_FDS);
+  test_pollset_init(pollsets, NUM_POLLSETS);
 
   /* Two distinct polling islands, each with their own FD and pollset. */
-  for (i = 0; i < num_fds; i++) {
+  for (i = 0; i < NUM_FDS; i++) {
     grpc_pollset_add_fd(&exec_ctx, pollsets[i].pollset, tfds[i].fd);
     grpc_exec_ctx_flush(&exec_ctx);
   }
@@ -173,7 +177,7 @@ static void test_pollset_queue_merge_items() {
   grpc_closure_init(
       closures + 3, increment, &result,
       grpc_workqueue_scheduler(grpc_fd_get_polling_island(tfds[1].fd)));
-  for (i = 0; i < num_closures; ++i) {
+  for (i = 0; i < NUM_CLOSURES; ++i) {
     grpc_closure_sched(&exec_ctx, closures + i, GRPC_ERROR_NONE);
   }
 
@@ -186,7 +190,7 @@ static void test_pollset_queue_merge_items() {
    * the merged polling island.
    */
   grpc_pollset_worker *worker = NULL;
-  for (i = 0; i < num_closures; ++i) {
+  for (i = 0; i < NUM_CLOSURES; ++i) {
     const gpr_timespec deadline = gpr_time_add(
         gpr_now(GPR_CLOCK_MONOTONIC), gpr_time_from_seconds(2, GPR_TIMESPAN));
     gpr_mu_lock(pollsets[1].mu);
@@ -196,13 +200,17 @@ static void test_pollset_queue_merge_items() {
                           gpr_now(GPR_CLOCK_MONOTONIC), deadline));
     gpr_mu_unlock(pollsets[1].mu);
   }
-  GPR_ASSERT(result == num_closures);
+  GPR_ASSERT(result == NUM_CLOSURES);
 
-  test_fd_cleanup(&exec_ctx, tfds, num_fds);
-  test_pollset_cleanup(&exec_ctx, pollsets, num_pollsets);
+  test_fd_cleanup(&exec_ctx, tfds, NUM_FDS);
+  test_pollset_cleanup(&exec_ctx, pollsets, NUM_POLLSETS);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
+#undef NUM_FDS
+#undef NUM_POLLSETS
+#undef NUM_CLOSURES
+
 /*
  * Cases to test:
  *  case 1) Polling islands of both fd and pollset are NULL
@@ -213,18 +221,20 @@ static void test_pollset_queue_merge_items() {
  *     case 4.2) Polling islands of fd and pollset are NOT-equal (This results
  *     in a merge)
  * */
+
+#define NUM_FDS 8
+#define NUM_POLLSETS 4
+
 static void test_add_fd_to_pollset() {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  const int num_fds = 8;
-  const int num_pollsets = 4;
-  test_fd tfds[num_fds];
-  int fds[num_fds];
-  test_pollset pollsets[num_pollsets];
+  test_fd tfds[NUM_FDS];
+  int fds[NUM_FDS];
+  test_pollset pollsets[NUM_POLLSETS];
   void *expected_pi = NULL;
   int i;
 
-  test_fd_init(tfds, fds, num_fds);
-  test_pollset_init(pollsets, num_pollsets);
+  test_fd_init(tfds, fds, NUM_FDS);
+  test_pollset_init(pollsets, NUM_POLLSETS);
 
   /*Step 1.
    * Create three polling islands (This will exercise test case 1 and 2) with
@@ -285,22 +295,107 @@ static void test_add_fd_to_pollset() {
 
   /* Compare Fd:0's polling island with that of all other Fds */
   expected_pi = grpc_fd_get_polling_island(tfds[0].fd);
-  for (i = 1; i < num_fds; i++) {
+  for (i = 1; i < NUM_FDS; i++) {
     GPR_ASSERT(grpc_are_polling_islands_equal(
         expected_pi, grpc_fd_get_polling_island(tfds[i].fd)));
   }
 
   /* Compare Fd:0's polling island with that of all other pollsets */
-  for (i = 0; i < num_pollsets; i++) {
+  for (i = 0; i < NUM_POLLSETS; i++) {
     GPR_ASSERT(grpc_are_polling_islands_equal(
         expected_pi, grpc_pollset_get_polling_island(pollsets[i].pollset)));
   }
 
-  test_fd_cleanup(&exec_ctx, tfds, num_fds);
-  test_pollset_cleanup(&exec_ctx, pollsets, num_pollsets);
+  test_fd_cleanup(&exec_ctx, tfds, NUM_FDS);
+  test_pollset_cleanup(&exec_ctx, pollsets, NUM_POLLSETS);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
+#undef NUM_FDS
+#undef NUM_POLLSETS
+
+typedef struct threading_shared {
+  gpr_mu *mu;
+  grpc_pollset *pollset;
+  grpc_wakeup_fd *wakeup_fd;
+  grpc_fd *wakeup_desc;
+  grpc_closure on_wakeup;
+  int wakeups;
+} threading_shared;
+
+static __thread int thread_wakeups = 0;
+
+static void test_threading_loop(void *arg) {
+  threading_shared *shared = arg;
+  while (thread_wakeups < 1000000) {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_pollset_worker *worker;
+    gpr_mu_lock(shared->mu);
+    GPR_ASSERT(GRPC_LOG_IF_ERROR(
+        "pollset_work",
+        grpc_pollset_work(&exec_ctx, shared->pollset, &worker,
+                          gpr_now(GPR_CLOCK_MONOTONIC),
+                          gpr_inf_future(GPR_CLOCK_MONOTONIC))));
+    gpr_mu_unlock(shared->mu);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+static void test_threading_wakeup(grpc_exec_ctx *exec_ctx, void *arg,
+                                  grpc_error *error) {
+  threading_shared *shared = arg;
+  ++shared->wakeups;
+  ++thread_wakeups;
+  GPR_ASSERT(GRPC_LOG_IF_ERROR(
+      "consume_wakeup", grpc_wakeup_fd_consume_wakeup(shared->wakeup_fd)));
+  grpc_fd_notify_on_read(exec_ctx, shared->wakeup_desc, &shared->on_wakeup);
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_next",
+                               grpc_wakeup_fd_wakeup(shared->wakeup_fd)));
+}
+
+static void test_threading(void) {
+  threading_shared shared;
+  shared.pollset = gpr_zalloc(grpc_pollset_size());
+  grpc_pollset_init(shared.pollset, &shared.mu);
+
+  gpr_thd_id thds[10];
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) {
+    gpr_thd_options opt = gpr_thd_options_default();
+    gpr_thd_options_set_joinable(&opt);
+    gpr_thd_new(&thds[i], test_threading_loop, &shared, &opt);
+  }
+  grpc_wakeup_fd fd;
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_fd_init", grpc_wakeup_fd_init(&fd)));
+  shared.wakeup_fd = &fd;
+  shared.wakeup_desc = grpc_fd_create(fd.read_fd, "wakeup");
+  shared.wakeups = 0;
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_pollset_add_fd(&exec_ctx, shared.pollset, shared.wakeup_desc);
+    grpc_fd_notify_on_read(
+        &exec_ctx, shared.wakeup_desc,
+        grpc_closure_init(&shared.on_wakeup, test_threading_wakeup, &shared,
+                          grpc_schedule_on_exec_ctx));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_first",
+                               grpc_wakeup_fd_wakeup(shared.wakeup_fd)));
+  for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) {
+    gpr_thd_join(thds[i]);
+  }
+  fd.read_fd = 0;
+  grpc_wakeup_fd_destroy(&fd);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_fd_orphan(&exec_ctx, shared.wakeup_desc, NULL, NULL, "done");
+    grpc_pollset_shutdown(&exec_ctx, shared.pollset,
+                          grpc_closure_create(destroy_pollset, shared.pollset,
+                                              grpc_schedule_on_exec_ctx));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  gpr_free(shared.pollset);
+}
+
 int main(int argc, char **argv) {
   const char *poll_strategy = NULL;
   grpc_test_init(argc, argv);
@@ -310,6 +405,7 @@ int main(int argc, char **argv) {
   if (poll_strategy != NULL && strcmp(poll_strategy, "epoll") == 0) {
     test_add_fd_to_pollset();
     test_pollset_queue_merge_items();
+    test_threading();
   } else {
     gpr_log(GPR_INFO,
             "Skipping the test. The test is only relevant for 'epoll' "
diff --git a/test/core/iomgr/resource_quota_test.c b/test/core/iomgr/resource_quota_test.c
index a5b28f210d8e761baf719165a4e077e974d47c7b..ebce8b9da6e5476ee7df0b652052a2f3da187f8d 100644
--- a/test/core/iomgr/resource_quota_test.c
+++ b/test/core/iomgr/resource_quota_test.c
@@ -682,6 +682,56 @@ static void test_one_slice_deleted_late(void) {
   }
 }
 
+static void test_resize_to_zero(void) {
+  gpr_log(GPR_INFO, "** test_resize_to_zero **");
+  grpc_resource_quota *q = grpc_resource_quota_create("test_resize_to_zero");
+  grpc_resource_quota_resize(q, 0);
+  grpc_resource_quota_unref(q);
+}
+
+static void test_negative_rq_free_pool(void) {
+  gpr_log(GPR_INFO, "** test_negative_rq_free_pool **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_negative_rq_free_pool");
+  grpc_resource_quota_resize(q, 1024);
+
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+
+  grpc_resource_user_slice_allocator alloc;
+  int num_allocs = 0;
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
+
+  grpc_slice_buffer buffer;
+  grpc_slice_buffer_init(&buffer);
+
+  {
+    const int start_allocs = num_allocs;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc_slices(&exec_ctx, &alloc, 1024, 1, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(num_allocs == start_allocs + 1);
+  }
+
+  grpc_resource_quota_resize(q, 512);
+
+  double eps = 0.0001;
+  GPR_ASSERT(grpc_resource_quota_get_memory_pressure(q) < 1 + eps);
+  GPR_ASSERT(grpc_resource_quota_get_memory_pressure(q) > 1 - eps);
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_unref(&exec_ctx, usr);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  grpc_resource_quota_unref(q);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_init();
@@ -705,6 +755,8 @@ int main(int argc, char **argv) {
   test_reclaimers_can_be_posted_repeatedly();
   test_one_slice();
   test_one_slice_deleted_late();
+  test_resize_to_zero();
+  test_negative_rq_free_pool();
   grpc_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/udp_server_test.c b/test/core/iomgr/udp_server_test.c
index 396ec959cdcedd7fabd6a6cb3dde82d3a1506df5..12d840632395b13c2a39e229c2afbd2f9f0ff818 100644
--- a/test/core/iomgr/udp_server_test.c
+++ b/test/core/iomgr/udp_server_test.c
@@ -48,9 +48,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
+#include <grpc/support/useful.h>
 
+#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/ev_posix.h"
 #include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/socket_factory_posix.h"
 #include "test/core/util/test_config.h"
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", #x)
@@ -94,16 +97,59 @@ static void on_fd_orphaned(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
   g_number_of_orphan_calls++;
 }
 
+struct test_socket_factory {
+  grpc_socket_factory base;
+  int number_of_socket_calls;
+  int number_of_bind_calls;
+};
+typedef struct test_socket_factory test_socket_factory;
+
+static int test_socket_factory_socket(grpc_socket_factory *factory, int domain,
+                                      int type, int protocol) {
+  test_socket_factory *f = (test_socket_factory *)factory;
+  f->number_of_socket_calls++;
+  return socket(domain, type, protocol);
+}
+
+static int test_socket_factory_bind(grpc_socket_factory *factory, int sockfd,
+                                    const grpc_resolved_address *addr) {
+  test_socket_factory *f = (test_socket_factory *)factory;
+  f->number_of_bind_calls++;
+  return bind(sockfd, (struct sockaddr *)addr->addr, (socklen_t)addr->len);
+}
+
+static int test_socket_factory_compare(grpc_socket_factory *a,
+                                       grpc_socket_factory *b) {
+  return GPR_ICMP(a, b);
+}
+
+static void test_socket_factory_destroy(grpc_socket_factory *factory) {
+  test_socket_factory *f = (test_socket_factory *)factory;
+  gpr_free(f);
+}
+
+static const grpc_socket_factory_vtable test_socket_factory_vtable = {
+    test_socket_factory_socket, test_socket_factory_bind,
+    test_socket_factory_compare, test_socket_factory_destroy};
+
+static test_socket_factory *test_socket_factory_create(void) {
+  test_socket_factory *factory = gpr_malloc(sizeof(test_socket_factory));
+  grpc_socket_factory_init(&factory->base, &test_socket_factory_vtable);
+  factory->number_of_socket_calls = 0;
+  factory->number_of_bind_calls = 0;
+  return factory;
+}
+
 static void test_no_op(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_udp_server *s = grpc_udp_server_create();
+  grpc_udp_server *s = grpc_udp_server_create(NULL);
   grpc_udp_server_destroy(&exec_ctx, s, NULL);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 
 static void test_no_op_with_start(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  grpc_udp_server *s = grpc_udp_server_create();
+  grpc_udp_server *s = grpc_udp_server_create(NULL);
   LOG_TEST("test_no_op_with_start");
   grpc_udp_server_start(&exec_ctx, s, NULL, 0, NULL);
   grpc_udp_server_destroy(&exec_ctx, s, NULL);
@@ -115,7 +161,7 @@ static void test_no_op_with_port(void) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_resolved_address resolved_addr;
   struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;
-  grpc_udp_server *s = grpc_udp_server_create();
+  grpc_udp_server *s = grpc_udp_server_create(NULL);
   LOG_TEST("test_no_op_with_port");
 
   memset(&resolved_addr, 0, sizeof(resolved_addr));
@@ -131,12 +177,44 @@ static void test_no_op_with_port(void) {
   GPR_ASSERT(g_number_of_orphan_calls == 1);
 }
 
+static void test_no_op_with_port_and_socket_factory(void) {
+  g_number_of_orphan_calls = 0;
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_resolved_address resolved_addr;
+  struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;
+
+  test_socket_factory *socket_factory = test_socket_factory_create();
+  grpc_arg socket_factory_arg =
+      grpc_socket_factory_to_arg(&socket_factory->base);
+  grpc_channel_args *channel_args =
+      grpc_channel_args_copy_and_add(NULL, &socket_factory_arg, 1);
+  grpc_udp_server *s = grpc_udp_server_create(channel_args);
+  grpc_channel_args_destroy(&exec_ctx, channel_args);
+
+  LOG_TEST("test_no_op_with_port_and_socket_factory");
+
+  memset(&resolved_addr, 0, sizeof(resolved_addr));
+  resolved_addr.len = sizeof(struct sockaddr_in);
+  addr->sin_family = AF_INET;
+  GPR_ASSERT(grpc_udp_server_add_port(s, &resolved_addr, on_read, on_write,
+                                      on_fd_orphaned));
+  GPR_ASSERT(socket_factory->number_of_socket_calls == 1);
+  GPR_ASSERT(socket_factory->number_of_bind_calls == 1);
+
+  grpc_udp_server_destroy(&exec_ctx, s, NULL);
+  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_socket_factory_unref(&socket_factory->base);
+
+  /* The server had a single FD, which should have been orphaned. */
+  GPR_ASSERT(g_number_of_orphan_calls == 1);
+}
+
 static void test_no_op_with_port_and_start(void) {
   g_number_of_orphan_calls = 0;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_resolved_address resolved_addr;
   struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;
-  grpc_udp_server *s = grpc_udp_server_create();
+  grpc_udp_server *s = grpc_udp_server_create(NULL);
   LOG_TEST("test_no_op_with_port_and_start");
 
   memset(&resolved_addr, 0, sizeof(resolved_addr));
@@ -160,7 +238,7 @@ static void test_receive(int number_of_clients) {
   grpc_resolved_address resolved_addr;
   struct sockaddr_storage *addr = (struct sockaddr_storage *)resolved_addr.addr;
   int clifd, svrfd;
-  grpc_udp_server *s = grpc_udp_server_create();
+  grpc_udp_server *s = grpc_udp_server_create(NULL);
   int i;
   int number_of_reads_before;
   gpr_timespec deadline;
@@ -243,6 +321,7 @@ int main(int argc, char **argv) {
   test_no_op();
   test_no_op_with_start();
   test_no_op_with_port();
+  test_no_op_with_port_and_socket_factory();
   test_no_op_with_port_and_start();
   test_receive(1);
   test_receive(10);
diff --git a/test/core/memory_usage/client.c b/test/core/memory_usage/client.c
index 107abbc1b3da4c523af5a3e43216a41d9b435044..51ea51bc12fdc4f66e91c119aab0fe794f640aa8 100644
--- a/test/core/memory_usage/client.c
+++ b/test/core/memory_usage/client.c
@@ -237,6 +237,11 @@ int main(int argc, char **argv) {
       0, grpc_slice_from_static_string("Reflector/GetAfterSvrCreation"));
 
   // warmup period
+  for (int i = 0; i < warmup_iterations; i++) {
+    send_snapshot_request(
+        0, grpc_slice_from_static_string("Reflector/SimpleSnapshot"));
+  }
+
   for (call_idx = 0; call_idx < warmup_iterations; ++call_idx) {
     init_ping_pong_request(call_idx + 1);
   }
diff --git a/test/core/security/BUILD b/test/core/security/BUILD
index 1cb03c5cfe7a2712fa8ae0c625f0acc127a3a382..8c63f9143d14a4d8f65e077dceb4d0fb78385aaa 100644
--- a/test/core/security/BUILD
+++ b/test/core/security/BUILD
@@ -54,13 +54,6 @@ cc_test(
     copts = ['-std=c99']
 )
 
-cc_test(
-    name = "b64_test",
-    srcs = ["b64_test.c"],
-    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
-    copts = ['-std=c99']
-)
-
 cc_test(
     name = "credentials_test",
     srcs = ["credentials_test.c"],
diff --git a/test/core/security/json_token_test.c b/test/core/security/json_token_test.c
index 5cebb09bb253301084423bedebb188342f79a835..97dfe87896c318cdc075fad48ba227c913e4e212 100644
--- a/test/core/security/json_token_test.c
+++ b/test/core/security/json_token_test.c
@@ -43,7 +43,7 @@
 
 #include "src/core/lib/json/json.h"
 #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h"
-#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/b64.h"
 #include "src/core/lib/slice/slice_internal.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/security/jwt_verifier_test.c b/test/core/security/jwt_verifier_test.c
index 0a73f675280df4700d6da54d1fb294fee93c8532..7eec780a91e270e4bdef752bf391a7c978de10ea 100644
--- a/test/core/security/jwt_verifier_test.c
+++ b/test/core/security/jwt_verifier_test.c
@@ -44,7 +44,7 @@
 
 #include "src/core/lib/http/httpcli.h"
 #include "src/core/lib/security/credentials/jwt/json_token.h"
-#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/b64.h"
 #include "test/core/util/test_config.h"
 
 /* This JSON key was generated with the GCE console and revoked immediately.
diff --git a/test/core/security/secure_endpoint_test.c b/test/core/security/secure_endpoint_test.c
index b3775e91a725aee35f606944595eab9e4f7d75a0..8f11f98a9cd9ec823dcc75f3b298f01f411664bb 100644
--- a/test/core/security/secure_endpoint_test.c
+++ b/test/core/security/secure_endpoint_test.c
@@ -43,7 +43,7 @@
 #include "src/core/lib/iomgr/iomgr.h"
 #include "src/core/lib/security/transport/secure_endpoint.h"
 #include "src/core/lib/slice/slice_internal.h"
-#include "src/core/lib/tsi/fake_transport_security.h"
+#include "src/core/tsi/fake_transport_security.h"
 #include "test/core/util/test_config.h"
 
 static gpr_mu *g_mu;
diff --git a/test/core/security/security_connector_test.c b/test/core/security/security_connector_test.c
index 4219b134f2504ae08b021f384e62f57348420bd1..6c7b8e688f0de448d7e320f42bad088a1269cf49 100644
--- a/test/core/security/security_connector_test.c
+++ b/test/core/security/security_connector_test.c
@@ -46,8 +46,8 @@
 #include "src/core/lib/support/env.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/support/tmpfile.h"
-#include "src/core/lib/tsi/ssl_transport_security.h"
-#include "src/core/lib/tsi/transport_security.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
 #include "test/core/util/test_config.h"
 
 static int check_transport_security_type(const grpc_auth_context *ctx) {
diff --git a/test/core/slice/BUILD b/test/core/slice/BUILD
index 67a47063482c3b5bc7440409830be608b7ba7462..4d64d0a8183d2bb805227531fa4f2742d7c75a03 100644
--- a/test/core/slice/BUILD
+++ b/test/core/slice/BUILD
@@ -52,3 +52,10 @@ cc_test(
     deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
     copts = ['-std=c99']
 )
+
+cc_test(
+    name = "b64_test",
+    srcs = ["b64_test.c"],
+    deps = ["//:grpc", "//test/core/util:grpc_test_util", "//:gpr", "//test/core/util:gpr_test_util"],
+    copts = ['-std=c99']
+)
diff --git a/test/core/security/b64_test.c b/test/core/slice/b64_test.c
similarity index 99%
rename from test/core/security/b64_test.c
rename to test/core/slice/b64_test.c
index 28af48075ebf51b13bd553455865ded94c48c172..9e5c06551c793c12c0ae97c36e162ed81309dcf1 100644
--- a/test/core/security/b64_test.c
+++ b/test/core/slice/b64_test.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/security/util/b64.h"
+#include "src/core/lib/slice/b64.h"
 
 #include <string.h>
 
diff --git a/test/core/support/time_test.c b/test/core/support/time_test.c
index e9ca08d0419d5161d71c6726a65f9cf971d306d5..4cb36a788c1647978af735ec928f6186e8815fe2 100644
--- a/test/core/support/time_test.c
+++ b/test/core/support/time_test.c
@@ -255,6 +255,22 @@ static void test_similar(void) {
                                    gpr_time_from_micros(10, GPR_TIMESPAN)));
 }
 
+static void test_convert_extreme(void) {
+  gpr_timespec realtime = {INT64_MAX, 1, GPR_CLOCK_REALTIME};
+  gpr_timespec monotime = gpr_convert_clock_type(realtime, GPR_CLOCK_MONOTONIC);
+  GPR_ASSERT(monotime.tv_sec == realtime.tv_sec);
+  GPR_ASSERT(monotime.clock_type == GPR_CLOCK_MONOTONIC);
+}
+
+static void test_cmp_extreme(void) {
+  gpr_timespec t1 = {INT64_MAX, 1, GPR_CLOCK_REALTIME};
+  gpr_timespec t2 = {INT64_MAX, 2, GPR_CLOCK_REALTIME};
+  GPR_ASSERT(gpr_time_cmp(t1, t2) == 0);
+  t1.tv_sec = INT64_MIN;
+  t2.tv_sec = INT64_MIN;
+  GPR_ASSERT(gpr_time_cmp(t1, t2) == 0);
+}
+
 int main(int argc, char *argv[]) {
   grpc_test_init(argc, argv);
 
@@ -263,5 +279,7 @@ int main(int argc, char *argv[]) {
   test_overflow();
   test_sticky_infinities();
   test_similar();
+  test_convert_extreme();
+  test_cmp_extreme();
   return 0;
 }
diff --git a/test/core/surface/server_chttp2_test.c b/test/core/surface/server_chttp2_test.c
index 6c178abdad1987390206ee2f3fee55a7b01ba4ef..8d40c646548713926078ff4ac46fb60d98ffbfe8 100644
--- a/test/core/surface/server_chttp2_test.c
+++ b/test/core/surface/server_chttp2_test.c
@@ -39,7 +39,7 @@
 #include <grpc/support/time.h>
 #include "src/core/lib/security/credentials/credentials.h"
 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
-#include "src/core/lib/tsi/fake_transport_security.h"
+#include "src/core/tsi/fake_transport_security.h"
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/tsi/transport_security_test.c b/test/core/tsi/transport_security_test.c
index 01e8770b2405ef780f82f85f023d8476c282cfb7..ee4a37c3141143c6a23c43694dc42aa1868c233e 100644
--- a/test/core/tsi/transport_security_test.c
+++ b/test/core/tsi/transport_security_test.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/lib/tsi/transport_security.h"
+#include "src/core/tsi/transport_security.h"
 
 #include <string.h>
 
@@ -43,8 +43,8 @@
 #include <openssl/crypto.h>
 
 #include "src/core/lib/support/string.h"
-#include "src/core/lib/tsi/fake_transport_security.h"
-#include "src/core/lib/tsi/ssl_transport_security.h"
+#include "src/core/tsi/fake_transport_security.h"
+#include "src/core/tsi/ssl_transport_security.h"
 #include "test/core/util/test_config.h"
 
 typedef struct {
diff --git a/test/core/util/BUILD b/test/core/util/BUILD
index e6d0d247dbd39d5b04e7104ee19faaebe9333ff0..03c79f1f154d9b2a59e631c704dd5e8fc229ed8c 100644
--- a/test/core/util/BUILD
+++ b/test/core/util/BUILD
@@ -56,9 +56,11 @@ cc_library(
         "reconnect_server.c",
         "slice_splitter.c",
         "test_tcp_server.c",
+        "trickle_endpoint.c",
     ],
     hdrs = [
         "debugger_macros.h",
+        "trickle_endpoint.h",
         "grpc_profiler.h",
         "mock_endpoint.h",
         "parse_hexstring.h",
diff --git a/test/cpp/common/BUILD b/test/cpp/common/BUILD
index 0e2db00f0abbc92a7292fe6aff2992b5f2a3cec0..48ad5839813da282dbbca0745794e048e73ab97f 100644
--- a/test/cpp/common/BUILD
+++ b/test/cpp/common/BUILD
@@ -34,3 +34,27 @@ cc_test(
     srcs = ["alarm_cpp_test.cc"],
     deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util"],
 )
+
+cc_test(
+    name = "auth_property_iterator_test",
+    srcs = ["auth_property_iterator_test.cc"],
+    deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util", "//test/cpp/util:test_util"],
+)
+
+cc_test(
+    name = "channel_arguments_test",
+    srcs = ["channel_arguments_test.cc"],
+    deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util"],
+)
+
+cc_test(
+    name = "channel_filter_test",
+    srcs = ["channel_filter_test.cc"],
+    deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util"],
+)
+
+cc_test(
+    name = "secure_auth_context_test",
+    srcs = ["secure_auth_context_test.cc"],
+    deps = ["//:grpc++", "//external:gtest", "//test/core/util:gpr_test_util", "//test/cpp/util:test_util"],
+)
diff --git a/test/cpp/common/channel_arguments_test.cc b/test/cpp/common/channel_arguments_test.cc
index 9bcc9f99f6871e9c1d167b950a552c04cd9a8fb3..8e7b56cbd61ab70852e6fdb6b8b7074a653f7a31 100644
--- a/test/cpp/common/channel_arguments_test.cc
+++ b/test/cpp/common/channel_arguments_test.cc
@@ -243,6 +243,22 @@ TEST_F(ChannelArgumentsTest, SetUserAgentPrefix) {
 
   channel_args_.SetUserAgentPrefix(prefix);
   EXPECT_TRUE(HasArg(arg0));
+
+  // Test if the user agent string is copied correctly
+  ChannelArguments new_channel_args(channel_args_);
+  grpc_channel_args args;
+  SetChannelArgs(new_channel_args, &args);
+  bool found = false;
+  for (size_t i = 0; i < args.num_args; i++) {
+    const grpc_arg& arg = args.args[i];
+    if (arg.type == GRPC_ARG_STRING &&
+        grpc::string(arg.key) == GRPC_ARG_PRIMARY_USER_AGENT_STRING) {
+      EXPECT_FALSE(found);
+      EXPECT_EQ(0, strcmp(arg.value.string, arg0.value.string));
+      found = true;
+    }
+  }
+  EXPECT_TRUE(found);
 }
 
 }  // namespace testing
diff --git a/test/cpp/end2end/async_end2end_test.cc b/test/cpp/end2end/async_end2end_test.cc
index 32e8a417958075f896497dae8cbc9ccbb5fdd62e..0b5215ef8e4556e1b447702c4dee83dfb1d8549c 100644
--- a/test/cpp/end2end/async_end2end_test.cc
+++ b/test/cpp/end2end/async_end2end_test.cc
@@ -484,6 +484,81 @@ TEST_P(AsyncEnd2endTest, SimpleClientStreaming) {
   EXPECT_TRUE(recv_status.ok());
 }
 
+// Two pings and a final pong.
+TEST_P(AsyncEnd2endTest, SimpleClientStreamingWithCoalescingApi) {
+  ResetStub();
+
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+  ClientContext cli_ctx;
+  ServerContext srv_ctx;
+  ServerAsyncReader<EchoResponse, EchoRequest> srv_stream(&srv_ctx);
+
+  send_request.set_message(GetParam().message_content);
+  cli_ctx.set_initial_metadata_corked(true);
+  // tag:1 never comes up since no op is performed
+  std::unique_ptr<ClientAsyncWriter<EchoRequest>> cli_stream(
+      stub_->AsyncRequestStream(&cli_ctx, &recv_response, cq_.get(), tag(1)));
+
+  service_.RequestRequestStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                                tag(2));
+
+  cli_stream->Write(send_request, tag(3));
+
+  // 65536(64KB) is the default flow control window size. Should change this
+  // number when default flow control window size changes. For the write of
+  // send_request larger than the flow control window size, tag:3 will not come
+  // up until server read is initiated. For write of send_request smaller than
+  // the flow control window size, the request can take the free ride with
+  // initial metadata due to coalescing, thus write tag:3 will come up here.
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking)
+        .Expect(2, true)
+        .Expect(3, true)
+        .Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
+  }
+
+  srv_stream.Read(&recv_request, tag(4));
+
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking).Expect(4, true).Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking)
+        .Expect(3, true)
+        .Expect(4, true)
+        .Verify(cq_.get());
+  }
+
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  cli_stream->WriteLast(send_request, WriteOptions(), tag(5));
+  srv_stream.Read(&recv_request, tag(6));
+  Verifier(GetParam().disable_blocking)
+      .Expect(5, true)
+      .Expect(6, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  srv_stream.Read(&recv_request, tag(7));
+  Verifier(GetParam().disable_blocking).Expect(7, false).Verify(cq_.get());
+
+  send_response.set_message(recv_request.message());
+  srv_stream.Finish(send_response, Status::OK, tag(8));
+  cli_stream->Finish(&recv_status, tag(9));
+  Verifier(GetParam().disable_blocking)
+      .Expect(8, true)
+      .Expect(9, true)
+      .Verify(cq_.get());
+
+  EXPECT_EQ(send_response.message(), recv_response.message());
+  EXPECT_TRUE(recv_status.ok());
+}
+
 // One ping, two pongs.
 TEST_P(AsyncEnd2endTest, SimpleServerStreaming) {
   ResetStub();
@@ -540,6 +615,112 @@ TEST_P(AsyncEnd2endTest, SimpleServerStreaming) {
   EXPECT_TRUE(recv_status.ok());
 }
 
+// One ping, two pongs. Using WriteAndFinish API
+TEST_P(AsyncEnd2endTest, SimpleServerStreamingWithCoalescingApiWAF) {
+  ResetStub();
+
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+  ClientContext cli_ctx;
+  ServerContext srv_ctx;
+  ServerAsyncWriter<EchoResponse> srv_stream(&srv_ctx);
+
+  send_request.set_message(GetParam().message_content);
+  std::unique_ptr<ClientAsyncReader<EchoResponse>> cli_stream(
+      stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
+
+  service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                 cq_.get(), cq_.get(), tag(2));
+
+  Verifier(GetParam().disable_blocking)
+      .Expect(1, true)
+      .Expect(2, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  send_response.set_message(recv_request.message());
+  srv_stream.Write(send_response, tag(3));
+  cli_stream->Read(&recv_response, tag(4));
+  Verifier(GetParam().disable_blocking)
+      .Expect(3, true)
+      .Expect(4, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  srv_stream.WriteAndFinish(send_response, WriteOptions(), Status::OK, tag(5));
+  cli_stream->Read(&recv_response, tag(6));
+  Verifier(GetParam().disable_blocking)
+      .Expect(5, true)
+      .Expect(6, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  cli_stream->Read(&recv_response, tag(7));
+  Verifier(GetParam().disable_blocking).Expect(7, false).Verify(cq_.get());
+
+  cli_stream->Finish(&recv_status, tag(8));
+  Verifier(GetParam().disable_blocking).Expect(8, true).Verify(cq_.get());
+
+  EXPECT_TRUE(recv_status.ok());
+}
+
+// One ping, two pongs. Using WriteLast API
+TEST_P(AsyncEnd2endTest, SimpleServerStreamingWithCoalescingApiWL) {
+  ResetStub();
+
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+  ClientContext cli_ctx;
+  ServerContext srv_ctx;
+  ServerAsyncWriter<EchoResponse> srv_stream(&srv_ctx);
+
+  send_request.set_message(GetParam().message_content);
+  std::unique_ptr<ClientAsyncReader<EchoResponse>> cli_stream(
+      stub_->AsyncResponseStream(&cli_ctx, send_request, cq_.get(), tag(1)));
+
+  service_.RequestResponseStream(&srv_ctx, &recv_request, &srv_stream,
+                                 cq_.get(), cq_.get(), tag(2));
+
+  Verifier(GetParam().disable_blocking)
+      .Expect(1, true)
+      .Expect(2, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  send_response.set_message(recv_request.message());
+  srv_stream.Write(send_response, tag(3));
+  cli_stream->Read(&recv_response, tag(4));
+  Verifier(GetParam().disable_blocking)
+      .Expect(3, true)
+      .Expect(4, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  srv_stream.WriteLast(send_response, WriteOptions(), tag(5));
+  cli_stream->Read(&recv_response, tag(6));
+  srv_stream.Finish(Status::OK, tag(7));
+  Verifier(GetParam().disable_blocking)
+      .Expect(5, true)
+      .Expect(6, true)
+      .Expect(7, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  cli_stream->Read(&recv_response, tag(8));
+  Verifier(GetParam().disable_blocking).Expect(8, false).Verify(cq_.get());
+
+  cli_stream->Finish(&recv_status, tag(9));
+  Verifier(GetParam().disable_blocking).Expect(9, true).Verify(cq_.get());
+
+  EXPECT_TRUE(recv_status.ok());
+}
+
 // One ping, one pong.
 TEST_P(AsyncEnd2endTest, SimpleBidiStreaming) {
   ResetStub();
@@ -599,6 +780,144 @@ TEST_P(AsyncEnd2endTest, SimpleBidiStreaming) {
   EXPECT_TRUE(recv_status.ok());
 }
 
+// One ping, one pong. Using server:WriteAndFinish api
+TEST_P(AsyncEnd2endTest, SimpleBidiStreamingWithCoalescingApiWAF) {
+  ResetStub();
+
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+  ClientContext cli_ctx;
+  ServerContext srv_ctx;
+  ServerAsyncReaderWriter<EchoResponse, EchoRequest> srv_stream(&srv_ctx);
+
+  send_request.set_message(GetParam().message_content);
+  cli_ctx.set_initial_metadata_corked(true);
+  std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse>>
+      cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
+
+  service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                             tag(2));
+
+  cli_stream->WriteLast(send_request, WriteOptions(), tag(3));
+
+  // 65536(64KB) is the default flow control window size. Should change this
+  // number when default flow control window size changes. For the write of
+  // send_request larger than the flow control window size, tag:3 will not come
+  // up until server read is initiated. For write of send_request smaller than
+  // the flow control window size, the request can take the free ride with
+  // initial metadata due to coalescing, thus write tag:3 will come up here.
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking)
+        .Expect(2, true)
+        .Expect(3, true)
+        .Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
+  }
+
+  srv_stream.Read(&recv_request, tag(4));
+
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking).Expect(4, true).Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking)
+        .Expect(3, true)
+        .Expect(4, true)
+        .Verify(cq_.get());
+  }
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  srv_stream.Read(&recv_request, tag(5));
+  Verifier(GetParam().disable_blocking).Expect(5, false).Verify(cq_.get());
+
+  send_response.set_message(recv_request.message());
+  srv_stream.WriteAndFinish(send_response, WriteOptions(), Status::OK, tag(6));
+  cli_stream->Read(&recv_response, tag(7));
+  Verifier(GetParam().disable_blocking)
+      .Expect(6, true)
+      .Expect(7, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  cli_stream->Finish(&recv_status, tag(8));
+  Verifier(GetParam().disable_blocking).Expect(8, true).Verify(cq_.get());
+
+  EXPECT_TRUE(recv_status.ok());
+}
+
+// One ping, one pong. Using server:WriteLast api
+TEST_P(AsyncEnd2endTest, SimpleBidiStreamingWithCoalescingApiWL) {
+  ResetStub();
+
+  EchoRequest send_request;
+  EchoRequest recv_request;
+  EchoResponse send_response;
+  EchoResponse recv_response;
+  Status recv_status;
+  ClientContext cli_ctx;
+  ServerContext srv_ctx;
+  ServerAsyncReaderWriter<EchoResponse, EchoRequest> srv_stream(&srv_ctx);
+
+  send_request.set_message(GetParam().message_content);
+  cli_ctx.set_initial_metadata_corked(true);
+  std::unique_ptr<ClientAsyncReaderWriter<EchoRequest, EchoResponse>>
+      cli_stream(stub_->AsyncBidiStream(&cli_ctx, cq_.get(), tag(1)));
+
+  service_.RequestBidiStream(&srv_ctx, &srv_stream, cq_.get(), cq_.get(),
+                             tag(2));
+
+  cli_stream->WriteLast(send_request, WriteOptions(), tag(3));
+
+  // 65536(64KB) is the default flow control window size. Should change this
+  // number when default flow control window size changes. For the write of
+  // send_request larger than the flow control window size, tag:3 will not come
+  // up until server read is initiated. For write of send_request smaller than
+  // the flow control window size, the request can take the free ride with
+  // initial metadata due to coalescing, thus write tag:3 will come up here.
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking)
+        .Expect(2, true)
+        .Expect(3, true)
+        .Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking).Expect(2, true).Verify(cq_.get());
+  }
+
+  srv_stream.Read(&recv_request, tag(4));
+
+  if (GetParam().message_content.length() < 65536) {
+    Verifier(GetParam().disable_blocking).Expect(4, true).Verify(cq_.get());
+  } else {
+    Verifier(GetParam().disable_blocking)
+        .Expect(3, true)
+        .Expect(4, true)
+        .Verify(cq_.get());
+  }
+  EXPECT_EQ(send_request.message(), recv_request.message());
+
+  srv_stream.Read(&recv_request, tag(5));
+  Verifier(GetParam().disable_blocking).Expect(5, false).Verify(cq_.get());
+
+  send_response.set_message(recv_request.message());
+  srv_stream.WriteLast(send_response, WriteOptions(), tag(6));
+  srv_stream.Finish(Status::OK, tag(7));
+  cli_stream->Read(&recv_response, tag(8));
+  Verifier(GetParam().disable_blocking)
+      .Expect(6, true)
+      .Expect(7, true)
+      .Expect(8, true)
+      .Verify(cq_.get());
+  EXPECT_EQ(send_response.message(), recv_response.message());
+
+  cli_stream->Finish(&recv_status, tag(9));
+  Verifier(GetParam().disable_blocking).Expect(9, true).Verify(cq_.get());
+
+  EXPECT_TRUE(recv_status.ok());
+}
+
 // Metadata tests
 TEST_P(AsyncEnd2endTest, ClientInitialMetadataRpc) {
   ResetStub();
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index df78557c43783cb73f40137217597e42c2f5c5ea..d3a83b188f944c3377772f7f2cd07ec6a66a8179 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -702,6 +702,21 @@ TEST_P(End2endTest, RequestStreamOneRequest) {
   EXPECT_TRUE(s.ok());
 }
 
+TEST_P(End2endTest, RequestStreamOneRequestWithCoalescingApi) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+
+  context.set_initial_metadata_corked(true);
+  auto stream = stub_->RequestStream(&context, &response);
+  request.set_message("hello");
+  stream->WriteLast(request, WriteOptions());
+  Status s = stream->Finish();
+  EXPECT_EQ(response.message(), request.message());
+  EXPECT_TRUE(s.ok());
+}
+
 TEST_P(End2endTest, RequestStreamTwoRequests) {
   ResetStub();
   EchoRequest request;
@@ -718,6 +733,22 @@ TEST_P(End2endTest, RequestStreamTwoRequests) {
   EXPECT_TRUE(s.ok());
 }
 
+TEST_P(End2endTest, RequestStreamTwoRequestsWithCoalescingApi) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+
+  context.set_initial_metadata_corked(true);
+  auto stream = stub_->RequestStream(&context, &response);
+  request.set_message("hello");
+  EXPECT_TRUE(stream->Write(request));
+  stream->WriteLast(request, WriteOptions());
+  Status s = stream->Finish();
+  EXPECT_EQ(response.message(), "hellohello");
+  EXPECT_TRUE(s.ok());
+}
+
 TEST_P(End2endTest, ResponseStream) {
   ResetStub();
   EchoRequest request;
@@ -738,6 +769,27 @@ TEST_P(End2endTest, ResponseStream) {
   EXPECT_TRUE(s.ok());
 }
 
+TEST_P(End2endTest, ResponseStreamWithCoalescingApi) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  request.set_message("hello");
+  context.AddMetadata(kServerUseCoalescingApi, "1");
+
+  auto stream = stub_->ResponseStream(&context, request);
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message() + "0");
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message() + "1");
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message() + "2");
+  EXPECT_FALSE(stream->Read(&response));
+
+  Status s = stream->Finish();
+  EXPECT_TRUE(s.ok());
+}
+
 TEST_P(End2endTest, BidiStream) {
   ResetStub();
   EchoRequest request;
@@ -770,6 +822,39 @@ TEST_P(End2endTest, BidiStream) {
   EXPECT_TRUE(s.ok());
 }
 
+TEST_P(End2endTest, BidiStreamWithCoalescingApi) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+  context.AddMetadata(kServerFinishAfterNReads, "3");
+  context.set_initial_metadata_corked(true);
+  grpc::string msg("hello");
+
+  auto stream = stub_->BidiStream(&context);
+
+  request.set_message(msg + "0");
+  EXPECT_TRUE(stream->Write(request));
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message());
+
+  request.set_message(msg + "1");
+  EXPECT_TRUE(stream->Write(request));
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message());
+
+  request.set_message(msg + "2");
+  stream->WriteLast(request, WriteOptions());
+  EXPECT_TRUE(stream->Read(&response));
+  EXPECT_EQ(response.message(), request.message());
+
+  EXPECT_FALSE(stream->Read(&response));
+  EXPECT_FALSE(stream->Read(&response));
+
+  Status s = stream->Finish();
+  EXPECT_TRUE(s.ok());
+}
+
 // Talk to the two services with the same name but different package names.
 // The two stubs are created on the same channel.
 TEST_P(End2endTest, DiffPackageServices) {
diff --git a/test/cpp/end2end/mock_test.cc b/test/cpp/end2end/mock_test.cc
index d6664da5a0f9c2a7fc3c6628170b567bc1dacaae..fdb2732e503d304cbb209905595238bee2fcc8ca 100644
--- a/test/cpp/end2end/mock_test.cc
+++ b/test/cpp/end2end/mock_test.cc
@@ -89,7 +89,7 @@ class MockClientReaderWriter<EchoRequest, EchoResponse> final
     return true;
   }
 
-  bool Write(const EchoRequest& msg, const WriteOptions& options) override {
+  bool Write(const EchoRequest& msg, WriteOptions options) override {
     gpr_log(GPR_INFO, "mock recv msg %s", msg.message().c_str());
     last_message_ = msg.message();
     return true;
diff --git a/test/cpp/end2end/test_service_impl.cc b/test/cpp/end2end/test_service_impl.cc
index 59d36e9cb56a51c44b2777867348cd84a59c2b47..11729c425cda646d799016ae057e4bc61ab5c487 100644
--- a/test/cpp/end2end/test_service_impl.cc
+++ b/test/cpp/end2end/test_service_impl.cc
@@ -246,6 +246,9 @@ Status TestServiceImpl::ResponseStream(ServerContext* context,
   int server_try_cancel = GetIntValueFromMetadata(
       kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL);
 
+  int server_coalescing_api = GetIntValueFromMetadata(
+      kServerUseCoalescingApi, context->client_metadata(), 0);
+
   if (server_try_cancel == CANCEL_BEFORE_PROCESSING) {
     ServerTryCancel(context);
     return Status::CANCELLED;
@@ -260,7 +263,11 @@ Status TestServiceImpl::ResponseStream(ServerContext* context,
 
   for (int i = 0; i < kNumResponseStreamsMsgs; i++) {
     response.set_message(request->message() + grpc::to_string(i));
-    writer->Write(response);
+    if (i == kNumResponseStreamsMsgs - 1 && server_coalescing_api != 0) {
+      writer->WriteLast(response, WriteOptions());
+    } else {
+      writer->Write(response);
+    }
   }
 
   if (server_try_cancel_thd != nullptr) {
@@ -305,10 +312,21 @@ Status TestServiceImpl::BidiStream(
         new std::thread(&TestServiceImpl::ServerTryCancel, this, context);
   }
 
+  // kServerFinishAfterNReads suggests after how many reads, the server should
+  // write the last message and send status (coalesced using WriteLast)
+  int server_write_last = GetIntValueFromMetadata(
+      kServerFinishAfterNReads, context->client_metadata(), 0);
+
+  int read_counts = 0;
   while (stream->Read(&request)) {
+    read_counts++;
     gpr_log(GPR_INFO, "recv msg %s", request.message().c_str());
     response.set_message(request.message());
-    stream->Write(response);
+    if (read_counts == server_write_last) {
+      stream->WriteLast(response, WriteOptions());
+    } else {
+      stream->Write(response);
+    }
   }
 
   if (server_try_cancel_thd != nullptr) {
diff --git a/test/cpp/end2end/test_service_impl.h b/test/cpp/end2end/test_service_impl.h
index 88e0be7bca77369f78c5a2db25e9b241b8e26492..b1f02f93f658ee7f9cfb0d13318b23f35b28ec18 100644
--- a/test/cpp/end2end/test_service_impl.h
+++ b/test/cpp/end2end/test_service_impl.h
@@ -48,6 +48,8 @@ const int kNumResponseStreamsMsgs = 3;
 const char* const kServerCancelAfterReads = "cancel_after_reads";
 const char* const kServerTryCancelRequest = "server_try_cancel";
 const char* const kDebugInfoTrailerKey = "debug-info-bin";
+const char* const kServerFinishAfterNReads = "server_finish_after_n_reads";
+const char* const kServerUseCoalescingApi = "server_use_coalescing_api";
 
 typedef enum {
   DO_NOT_CANCEL = 0,
diff --git a/test/cpp/microbenchmarks/BUILD b/test/cpp/microbenchmarks/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..38619666dcb3f36e1740c58814af4a8e52e952c8
--- /dev/null
+++ b/test/cpp/microbenchmarks/BUILD
@@ -0,0 +1,93 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_test(
+    name = "noop-benchmark",
+    srcs = ["noop-benchmark.cc"],
+    deps = ["//external:benchmark"],
+    linkopts = ["-pthread"],
+)
+
+cc_library(
+    name = "helpers",
+    srcs = ["helpers.cc"],
+    hdrs = ["helpers.h", "fullstack_fixtures.h", "fullstack_context_mutators.h"],
+    deps = ["//:grpc++", "//external:benchmark", "//test/core/util:grpc_test_util", "//src/proto/grpc/testing:echo_proto"],
+    linkopts = ["-pthread"],
+)
+
+cc_test(
+    name = "bm_closure",
+    srcs = ["bm_closure.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_cq",
+    srcs = ["bm_cq.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_error",
+    srcs = ["bm_error.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_fullstack_streaming_ping_pong",
+    srcs = ["bm_fullstack_streaming_ping_pong.cc"],
+    deps = [":helpers"],
+
+    )
+cc_test(
+    name = "bm_fullstack_streaming_pump",
+    srcs = ["bm_fullstack_streaming_pump.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_fullstack_trickle",
+    srcs = ["bm_fullstack_trickle.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_fullstack_unary_ping_pong",
+    srcs = ["bm_fullstack_unary_ping_pong.cc"],
+    deps = [":helpers"],
+)
+
+cc_test(
+    name = "bm_metadata",
+    srcs = ["bm_metadata.cc"],
+    deps = [":helpers"],
+)
diff --git a/test/cpp/microbenchmarks/bm_call_create.cc b/test/cpp/microbenchmarks/bm_call_create.cc
index 1ef8caa69034adc46eea6628d87e134f327635f3..4af2263e823cde701db8adfcf58052dbe1a11b05 100644
--- a/test/cpp/microbenchmarks/bm_call_create.cc
+++ b/test/cpp/microbenchmarks/bm_call_create.cc
@@ -34,6 +34,7 @@
 /* This benchmark exists to ensure that the benchmark integration is
  * working */
 
+#include <benchmark/benchmark.h>
 #include <string.h>
 #include <sstream>
 
@@ -60,7 +61,6 @@ extern "C" {
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/helpers.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 auto &force_library_initialization = Library::get();
 
diff --git a/test/cpp/microbenchmarks/bm_chttp2_hpack.cc b/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
index 563db758f71b8196e6b914414eabebabfc90ab36..55d2d2f58d010f6933a90a1aff6f8a2f513bee14 100644
--- a/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
+++ b/test/cpp/microbenchmarks/bm_chttp2_hpack.cc
@@ -33,6 +33,7 @@
 
 /* Microbenchmarks around CHTTP2 HPACK operations */
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <string.h>
 #include <sstream>
@@ -40,6 +41,7 @@ extern "C" {
 #include "src/core/ext/transport/chttp2/transport/hpack_encoder.h"
 #include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
 #include "src/core/lib/slice/slice_internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/transport/static_metadata.h"
 }
 #include "test/cpp/microbenchmarks/helpers.h"
@@ -69,6 +71,7 @@ template <class Fixture>
 static void BM_HpackEncoderEncodeHeader(benchmark::State &state) {
   TrackCounters track_counters;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  static bool logged_representative_output = false;
 
   grpc_metadata_batch b;
   grpc_metadata_batch_init(&b);
@@ -87,8 +90,17 @@ static void BM_HpackEncoderEncodeHeader(benchmark::State &state) {
   grpc_slice_buffer outbuf;
   grpc_slice_buffer_init(&outbuf);
   while (state.KeepRunning()) {
-    grpc_chttp2_encode_header(&exec_ctx, &c, (uint32_t)state.iterations(), &b,
-                              state.range(0), state.range(1), &stats, &outbuf);
+    uint32_t stream_id = static_cast<uint32_t>(state.iterations());
+    grpc_chttp2_encode_header(&exec_ctx, &c, stream_id, &b, state.range(0),
+                              state.range(1), &stats, &outbuf);
+    if (!logged_representative_output) {
+      logged_representative_output = true;
+      for (size_t i = 0; i < outbuf.count; i++) {
+        char *s = grpc_dump_slice(outbuf.slices[i], GPR_DUMP_HEX);
+        gpr_log(GPR_DEBUG, "%" PRIdPTR ": %s", i, s);
+        gpr_free(s);
+      }
+    }
     grpc_slice_buffer_reset_and_unref_internal(&exec_ctx, &outbuf);
     grpc_exec_ctx_flush(&exec_ctx);
   }
@@ -131,6 +143,28 @@ class SingleInternedElem {
   }
 };
 
+template <int kLength>
+class SingleInternedBinaryElem {
+ public:
+  static std::vector<grpc_mdelem> GetElems(grpc_exec_ctx *exec_ctx) {
+    grpc_slice bytes = MakeBytes();
+    std::vector<grpc_mdelem> out = {grpc_mdelem_from_slices(
+        exec_ctx, grpc_slice_intern(grpc_slice_from_static_string("abc-bin")),
+        grpc_slice_intern(bytes))};
+    grpc_slice_unref(bytes);
+    return out;
+  }
+
+ private:
+  static grpc_slice MakeBytes() {
+    std::vector<char> v;
+    for (int i = 0; i < kLength; i++) {
+      v.push_back(static_cast<char>(rand()));
+    }
+    return grpc_slice_from_copied_buffer(v.data(), v.size());
+  }
+};
+
 class SingleInternedKeyElem {
  public:
   static std::vector<grpc_mdelem> GetElems(grpc_exec_ctx *exec_ctx) {
@@ -149,6 +183,24 @@ class SingleNonInternedElem {
   }
 };
 
+template <int kLength>
+class SingleNonInternedBinaryElem {
+ public:
+  static std::vector<grpc_mdelem> GetElems(grpc_exec_ctx *exec_ctx) {
+    return {grpc_mdelem_from_slices(
+        exec_ctx, grpc_slice_from_static_string("abc-bin"), MakeBytes())};
+  }
+
+ private:
+  static grpc_slice MakeBytes() {
+    std::vector<char> v;
+    for (int i = 0; i < kLength; i++) {
+      v.push_back(static_cast<char>(rand()));
+    }
+    return grpc_slice_from_copied_buffer(v.data(), v.size());
+  }
+};
+
 class RepresentativeClientInitialMetadata {
  public:
   static std::vector<grpc_mdelem> GetElems(grpc_exec_ctx *exec_ctx) {
@@ -195,8 +247,29 @@ BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedKeyElem)
     ->Args({0, 16384});
 BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedElem)
     ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedBinaryElem<1>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedBinaryElem<3>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedBinaryElem<10>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedBinaryElem<31>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleInternedBinaryElem<100>)
+    ->Args({0, 16384});
 BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedElem)
     ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedBinaryElem<1>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedBinaryElem<3>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedBinaryElem<10>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedBinaryElem<31>)
+    ->Args({0, 16384});
+BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader,
+                   SingleNonInternedBinaryElem<100>)
+    ->Args({0, 16384});
 // test with a tiny frame size, to highlight continuation costs
 BENCHMARK_TEMPLATE(BM_HpackEncoderEncodeHeader, SingleNonInternedElem)
     ->Args({0, 1});
@@ -255,6 +328,8 @@ static void BM_HpackParserParseHeader(benchmark::State &state) {
     }
     grpc_exec_ctx_flush(&exec_ctx);
   }
+  for (auto slice : init_slices) grpc_slice_unref(slice);
+  for (auto slice : benchmark_slices) grpc_slice_unref(slice);
   grpc_chttp2_hpack_parser_destroy(&exec_ctx, &p);
   grpc_exec_ctx_finish(&exec_ctx);
   track_counters.Finish(state);
@@ -262,7 +337,7 @@ static void BM_HpackParserParseHeader(benchmark::State &state) {
 
 namespace hpack_parser_fixtures {
 
-static grpc_slice MakeSlice(std::initializer_list<uint8_t> bytes) {
+static grpc_slice MakeSlice(std::vector<uint8_t> bytes) {
   grpc_slice s = grpc_slice_malloc(bytes.size());
   uint8_t *p = GRPC_SLICE_START_PTR(s);
   for (auto b : bytes) {
@@ -346,6 +421,64 @@ class NonIndexedElem {
   }
 };
 
+class NonIndexedBinaryElem1 {
+ public:
+  static std::vector<grpc_slice> GetInitSlices() { return {}; }
+  static std::vector<grpc_slice> GetBenchmarkSlices() {
+    return {MakeSlice(
+        {0x00, 0x07, 'a', 'b', 'c', '-', 'b', 'i', 'n', 0x82, 0xf7, 0xb3})};
+  }
+};
+
+class NonIndexedBinaryElem3 {
+ public:
+  static std::vector<grpc_slice> GetInitSlices() { return {}; }
+  static std::vector<grpc_slice> GetBenchmarkSlices() {
+    return {MakeSlice({0x00, 0x07, 'a', 'b', 'c', '-', 'b', 'i', 'n', 0x84,
+                       0x7f, 0x4e, 0x29, 0x3f})};
+  }
+};
+
+class NonIndexedBinaryElem10 {
+ public:
+  static std::vector<grpc_slice> GetInitSlices() { return {}; }
+  static std::vector<grpc_slice> GetBenchmarkSlices() {
+    return {MakeSlice({0x00, 0x07, 'a',  'b',  'c',  '-',  'b',
+                       'i',  'n',  0x8b, 0x71, 0x0c, 0xa5, 0x81,
+                       0x73, 0x7b, 0x47, 0x13, 0xe9, 0xf7, 0xe3})};
+  }
+};
+
+class NonIndexedBinaryElem31 {
+ public:
+  static std::vector<grpc_slice> GetInitSlices() { return {}; }
+  static std::vector<grpc_slice> GetBenchmarkSlices() {
+    return {MakeSlice({0x00, 0x07, 'a',  'b',  'c',  '-',  'b',  'i',  'n',
+                       0xa3, 0x92, 0x43, 0x7f, 0xbe, 0x7c, 0xea, 0x6f, 0xf3,
+                       0x3d, 0xa7, 0xa7, 0x67, 0xfb, 0xe2, 0x82, 0xf7, 0xf2,
+                       0x8f, 0x1f, 0x9d, 0xdf, 0xf1, 0x7e, 0xb3, 0xef, 0xb2,
+                       0x8f, 0x53, 0x77, 0xce, 0x0c, 0x13, 0xe3, 0xfd, 0x87})};
+  }
+};
+
+class NonIndexedBinaryElem100 {
+ public:
+  static std::vector<grpc_slice> GetInitSlices() { return {}; }
+  static std::vector<grpc_slice> GetBenchmarkSlices() {
+    return {MakeSlice(
+        {0x00, 0x07, 'a',  'b',  'c',  '-',  'b',  'i',  'n',  0xeb, 0x1d, 0x4d,
+         0xe8, 0x96, 0x8c, 0x14, 0x20, 0x06, 0xc1, 0xc3, 0xdf, 0x6e, 0x1f, 0xef,
+         0xde, 0x2f, 0xde, 0xb7, 0xf2, 0xfe, 0x6d, 0xd4, 0xe4, 0x7d, 0xf5, 0x55,
+         0x46, 0x52, 0x3d, 0x91, 0xf2, 0xd4, 0x6f, 0xca, 0x34, 0xcd, 0xd9, 0x39,
+         0xbd, 0x03, 0x27, 0xe3, 0x9c, 0x74, 0xcc, 0x17, 0x34, 0xed, 0xa6, 0x6a,
+         0x77, 0x73, 0x10, 0xcd, 0x8e, 0x4e, 0x5c, 0x7c, 0x72, 0x39, 0xd8, 0xe6,
+         0x78, 0x6b, 0xdb, 0xa5, 0xb7, 0xab, 0xe7, 0x46, 0xae, 0x21, 0xab, 0x7f,
+         0x01, 0x89, 0x13, 0xd7, 0xca, 0x17, 0x6e, 0xcb, 0xd6, 0x79, 0x71, 0x68,
+         0xbf, 0x8a, 0x3f, 0x32, 0xe8, 0xba, 0xf5, 0xbe, 0xb3, 0xbc, 0xde, 0x28,
+         0xc7, 0xcf, 0x62, 0x7a, 0x58, 0x2c, 0xcf, 0x4d, 0xe3})};
+  }
+};
+
 class RepresentativeClientInitialMetadata {
  public:
   static std::vector<grpc_slice> GetInitSlices() {
@@ -437,6 +570,11 @@ BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, IndexedSingleInternedElem);
 BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, AddIndexedSingleInternedElem);
 BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, KeyIndexedSingleInternedElem);
 BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedElem);
+BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedBinaryElem1);
+BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedBinaryElem3);
+BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedBinaryElem10);
+BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedBinaryElem31);
+BENCHMARK_TEMPLATE(BM_HpackParserParseHeader, NonIndexedBinaryElem100);
 BENCHMARK_TEMPLATE(BM_HpackParserParseHeader,
                    RepresentativeClientInitialMetadata);
 BENCHMARK_TEMPLATE(BM_HpackParserParseHeader,
@@ -446,4 +584,23 @@ BENCHMARK_TEMPLATE(BM_HpackParserParseHeader,
 
 }  // namespace hpack_parser_fixtures
 
+static void BM_Base16SomeStuff(benchmark::State &state) {
+  uint8_t *bytes = new uint8_t[state.range(0)];
+  for (int i = 0; i < state.range(0); i++) {
+    bytes[i] = static_cast<uint8_t>(rand());
+  }
+  uint8_t *encoded = new uint8_t[state.range(0) * 2];
+  static const uint8_t hex[] = "0123456789abcdef";
+  while (state.KeepRunning()) {
+    for (int i = 0; i < state.range(0); i++) {
+      encoded[2 * i + 0] = hex[encoded[i] >> 8];
+      encoded[2 * i + 1] = hex[encoded[i] & 0xf];
+    }
+  }
+  delete[] encoded;
+  delete[] bytes;
+  state.SetBytesProcessed(state.iterations() * state.range(0));
+}
+BENCHMARK(BM_Base16SomeStuff)->Range(1, 4096);
+
 BENCHMARK_MAIN();
diff --git a/test/cpp/microbenchmarks/bm_closure.cc b/test/cpp/microbenchmarks/bm_closure.cc
index 28a385b6c11c785d0fbe739d1446fe8626ef54bf..d52fe4ee309cb34f8c138e114f8fb71516b782ac 100644
--- a/test/cpp/microbenchmarks/bm_closure.cc
+++ b/test/cpp/microbenchmarks/bm_closure.cc
@@ -33,7 +33,9 @@
 
 /* Test various closure related operations */
 
+#include <benchmark/benchmark.h>
 #include <grpc/grpc.h>
+#include <sstream>
 
 extern "C" {
 #include "src/core/lib/iomgr/closure.h"
@@ -43,7 +45,6 @@ extern "C" {
 }
 
 #include "test/cpp/microbenchmarks/helpers.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 auto& force_library_initialization = Library::get();
 
diff --git a/test/cpp/microbenchmarks/bm_cq.cc b/test/cpp/microbenchmarks/bm_cq.cc
index 91e6a851017b0bae88099295d82a98cd1017eab5..38ac9d27053f69bfdf22ddbee8ab3332e9b7c3c1 100644
--- a/test/cpp/microbenchmarks/bm_cq.cc
+++ b/test/cpp/microbenchmarks/bm_cq.cc
@@ -34,12 +34,11 @@
 /* This benchmark exists to ensure that the benchmark integration is
  * working */
 
+#include <benchmark/benchmark.h>
 #include <grpc++/completion_queue.h>
 #include <grpc++/impl/grpc_library.h>
 #include <grpc/grpc.h>
-
 #include "test/cpp/microbenchmarks/helpers.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 extern "C" {
 #include "src/core/lib/surface/completion_queue.h"
@@ -59,6 +58,17 @@ static void BM_CreateDestroyCpp(benchmark::State& state) {
 }
 BENCHMARK(BM_CreateDestroyCpp);
 
+/* Create cq using a different constructor */
+static void BM_CreateDestroyCpp2(benchmark::State& state) {
+  TrackCounters track_counters;
+  while (state.KeepRunning()) {
+    grpc_completion_queue* core_cq = grpc_completion_queue_create(NULL);
+    CompletionQueue cq(core_cq);
+  }
+  track_counters.Finish(state);
+}
+BENCHMARK(BM_CreateDestroyCpp2);
+
 static void BM_CreateDestroyCore(benchmark::State& state) {
   TrackCounters track_counters;
   while (state.KeepRunning()) {
diff --git a/test/cpp/microbenchmarks/bm_error.cc b/test/cpp/microbenchmarks/bm_error.cc
index 00e1a08cabe645585ccc511f1bc914307c294b31..ea9777bbe6cf6295fd2421b92c0579e2dbf2bbd0 100644
--- a/test/cpp/microbenchmarks/bm_error.cc
+++ b/test/cpp/microbenchmarks/bm_error.cc
@@ -33,6 +33,7 @@
 
 /* Test various operations on grpc_error */
 
+#include <benchmark/benchmark.h>
 #include <memory>
 
 extern "C" {
@@ -41,7 +42,6 @@ extern "C" {
 }
 
 #include "test/cpp/microbenchmarks/helpers.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 auto& force_library_initialization = Library::get();
 
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
index 00e37f7912137e3442a46ab0d185842b4018f4e3..c536e15a2cc042bd7f985a43a529414af41235e1 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_ping_pong.cc
@@ -33,14 +33,13 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
+#include <benchmark/benchmark.h>
 #include <sstream>
-
 #include "src/core/lib/profiling/timers.h"
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
 #include "test/cpp/microbenchmarks/fullstack_fixtures.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 namespace grpc {
 namespace testing {
@@ -240,6 +239,173 @@ static void BM_StreamingPingPongMsgs(benchmark::State& state) {
   state.SetBytesProcessed(msg_size * state.iterations() * 2);
 }
 
+// Repeatedly makes Streaming Bidi calls (exchanging a configurable number of
+// messages in each call) in a loop on a single channel. Different from
+// BM_StreamingPingPong we are using stream coalescing api, e.g. WriteLast,
+// WriteAndFinish, set_initial_metadata_corked. These apis aim at saving
+// sendmsg syscalls for streaming by coalescing 1. initial metadata with first
+// message; 2. final streaming message with trailing metadata.
+//
+//  First parmeter (i.e state.range(0)):  Message size (in bytes) to use
+//  Second parameter (i.e state.range(1)): Number of ping pong messages.
+//      Note: One ping-pong means two messages (one from client to server and
+//      the other from server to client):
+//  Third parameter (i.e state.range(2)): Switch between using WriteAndFinish
+//  API and WriteLast API for server.
+template <class Fixture, class ClientContextMutator, class ServerContextMutator>
+static void BM_StreamingPingPongWithCoalescingApi(benchmark::State& state) {
+  const int msg_size = state.range(0);
+  const int max_ping_pongs = state.range(1);
+  // This options is used to test out server API: WriteLast and WriteAndFinish
+  // respectively, since we can not use both of them on server side at the same
+  // time. Value 1 means we are testing out the WriteAndFinish API, and
+  // otherwise we are testing out the WriteLast API.
+  const int write_and_finish = state.range(2);
+
+  EchoTestService::AsyncService service;
+  std::unique_ptr<Fixture> fixture(new Fixture(&service));
+  {
+    EchoResponse send_response;
+    EchoResponse recv_response;
+    EchoRequest send_request;
+    EchoRequest recv_request;
+
+    if (msg_size > 0) {
+      send_request.set_message(std::string(msg_size, 'a'));
+      send_response.set_message(std::string(msg_size, 'b'));
+    }
+
+    std::unique_ptr<EchoTestService::Stub> stub(
+        EchoTestService::NewStub(fixture->channel()));
+
+    while (state.KeepRunning()) {
+      ServerContext svr_ctx;
+      ServerContextMutator svr_ctx_mut(&svr_ctx);
+      ServerAsyncReaderWriter<EchoResponse, EchoRequest> response_rw(&svr_ctx);
+      service.RequestBidiStream(&svr_ctx, &response_rw, fixture->cq(),
+                                fixture->cq(), tag(0));
+
+      ClientContext cli_ctx;
+      ClientContextMutator cli_ctx_mut(&cli_ctx);
+      cli_ctx.set_initial_metadata_corked(true);
+      // tag:1 here will never comes up, since we are not performing any op due
+      // to initial metadata coalescing.
+      auto request_rw = stub->AsyncBidiStream(&cli_ctx, fixture->cq(), tag(1));
+
+      void* t;
+      bool ok;
+      int need_tags;
+
+      // Send 'max_ping_pongs' number of ping pong messages
+      int ping_pong_cnt = 0;
+      while (ping_pong_cnt < max_ping_pongs) {
+        if (ping_pong_cnt == max_ping_pongs - 1) {
+          request_rw->WriteLast(send_request, WriteOptions(), tag(2));
+        } else {
+          request_rw->Write(send_request, tag(2));  // Start client send
+        }
+
+        need_tags = (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5);
+
+        if (ping_pong_cnt == 0) {
+          // wait for the server call structure (call_hook, etc.) to be
+          // initialized (async stream between client side and server side
+          // established). It is necessary when client init metadata is
+          // coalesced
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          while ((int)(intptr_t)t != 0) {
+            // In some cases tag:2 comes before tag:0 (write tag comes out
+            // first), this while loop is to make sure get tag:0.
+            int i = (int)(intptr_t)t;
+            GPR_ASSERT(need_tags & (1 << i));
+            need_tags &= ~(1 << i);
+            GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          }
+        }
+
+        response_rw.Read(&recv_request, tag(3));   // Start server recv
+        request_rw->Read(&recv_response, tag(4));  // Start client recv
+
+        while (need_tags) {
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+          GPR_ASSERT(ok);
+          int i = (int)(intptr_t)t;
+
+          // If server recv is complete, start the server send operation
+          if (i == 3) {
+            if (ping_pong_cnt == max_ping_pongs - 1) {
+              if (write_and_finish == 1) {
+                response_rw.WriteAndFinish(send_response, WriteOptions(),
+                                           Status::OK, tag(5));
+              } else {
+                response_rw.WriteLast(send_response, WriteOptions(), tag(5));
+                // WriteLast buffers the write, so neither server write op nor
+                // client read op will finish inside the while loop.
+                need_tags &= ~(1 << 4);
+                need_tags &= ~(1 << 5);
+              }
+            } else {
+              response_rw.Write(send_response, tag(5));
+            }
+          }
+
+          GPR_ASSERT(need_tags & (1 << i));
+          need_tags &= ~(1 << i);
+        }
+
+        ping_pong_cnt++;
+      }
+
+      if (max_ping_pongs == 0) {
+        need_tags = (1 << 6) | (1 << 7) | (1 << 8);
+      } else {
+        if (write_and_finish == 1) {
+          need_tags = (1 << 8);
+        } else {
+          // server's buffered write and the client's read of the buffered write
+          // tags should come up.
+          need_tags = (1 << 4) | (1 << 5) | (1 << 7) | (1 << 8);
+        }
+      }
+
+      // No message write or initial metadata write happened yet.
+      if (max_ping_pongs == 0) {
+        request_rw->WritesDone(tag(6));
+        // wait for server call data structure(call_hook, etc.) to be
+        // initialized, since initial metadata is corked.
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        while ((int)(intptr_t)t != 0) {
+          int i = (int)(intptr_t)t;
+          GPR_ASSERT(need_tags & (1 << i));
+          need_tags &= ~(1 << i);
+          GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        }
+        response_rw.Finish(Status::OK, tag(7));
+      } else {
+        if (write_and_finish != 1) {
+          response_rw.Finish(Status::OK, tag(7));
+        }
+      }
+
+      Status recv_status;
+      request_rw->Finish(&recv_status, tag(8));
+
+      while (need_tags) {
+        GPR_ASSERT(fixture->cq()->Next(&t, &ok));
+        int i = (int)(intptr_t)t;
+        GPR_ASSERT(need_tags & (1 << i));
+        need_tags &= ~(1 << i);
+      }
+
+      GPR_ASSERT(recv_status.ok());
+    }
+  }
+
+  fixture->Finish(state);
+  fixture.reset();
+  state.SetBytesProcessed(msg_size * state.iterations() * max_ping_pongs * 2);
+}
+
 /*******************************************************************************
  * CONFIGURATIONS
  */
@@ -270,6 +436,30 @@ BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, InProcessCHTTP2, NoOpMutator,
 BENCHMARK_TEMPLATE(BM_StreamingPingPongMsgs, TCP, NoOpMutator, NoOpMutator)
     ->Range(0, 128 * 1024 * 1024);
 
+// Generate Args for StreamingPingPongWithCoalescingApi benchmarks. Currently
+// generates args for only "small streams" (i.e streams with 0, 1 or 2 messages)
+static void StreamingPingPongWithCoalescingApiArgs(
+    benchmark::internal::Benchmark* b) {
+  int msg_size = 0;
+
+  b->Args(
+      {0, 0, 0});  // spl case: 0 ping-pong msgs (msg_size doesn't matter here)
+  b->Args(
+      {0, 0, 1});  // spl case: 0 ping-pong msgs (msg_size doesn't matter here)
+
+  for (msg_size = 0; msg_size <= 128 * 1024 * 1024;
+       msg_size == 0 ? msg_size++ : msg_size *= 8) {
+    b->Args({msg_size, 1, 0});
+    b->Args({msg_size, 2, 0});
+    b->Args({msg_size, 1, 1});
+    b->Args({msg_size, 2, 1});
+  }
+}
+
+BENCHMARK_TEMPLATE(BM_StreamingPingPongWithCoalescingApi, InProcessCHTTP2,
+                   NoOpMutator, NoOpMutator)
+    ->Apply(StreamingPingPongWithCoalescingApiArgs);
+
 }  // namespace testing
 }  // namespace grpc
 
diff --git a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
index dc0e7d769ab4b7f6d10244cfe4feb3b48e921600..5c1eb1165b5a4b91c33e85981050b8cc38e73ad0 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_streaming_pump.cc
@@ -33,14 +33,13 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
+#include <benchmark/benchmark.h>
 #include <sstream>
-
 #include "src/core/lib/profiling/timers.h"
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
 #include "test/cpp/microbenchmarks/fullstack_fixtures.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
index 5011f06368ecca54a3f001abba70b82cbb6b5057..c563f28b55cb25be8118f456d0caf3626618b577 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_trickle.cc
@@ -33,12 +33,12 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
+#include <benchmark/benchmark.h>
 #include "src/core/lib/profiling/timers.h"
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
 #include "test/cpp/microbenchmarks/fullstack_fixtures.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 extern "C" {
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"
 #include "src/core/ext/transport/chttp2/transport/internal.h"
diff --git a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
index e51d272b104a6852753463a1acbf936c9bff25af..615b05b7c7f3cc42bfb3f5d7c75896faea0cb59e 100644
--- a/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
+++ b/test/cpp/microbenchmarks/bm_fullstack_unary_ping_pong.cc
@@ -33,14 +33,13 @@
 
 /* Benchmark gRPC end2end in various configurations */
 
+#include <benchmark/benchmark.h>
 #include <sstream>
-
 #include "src/core/lib/profiling/timers.h"
 #include "src/cpp/client/create_channel_internal.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
 #include "test/cpp/microbenchmarks/fullstack_context_mutators.h"
 #include "test/cpp/microbenchmarks/fullstack_fixtures.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/microbenchmarks/bm_metadata.cc b/test/cpp/microbenchmarks/bm_metadata.cc
index 34874b57f532dd3d0e66d1d989c8cc604036009b..7029f369ad80cf9c40562975c645b53930f90439 100644
--- a/test/cpp/microbenchmarks/bm_metadata.cc
+++ b/test/cpp/microbenchmarks/bm_metadata.cc
@@ -33,17 +33,15 @@
 
 /* Test out various metadata handling primitives */
 
+#include <benchmark/benchmark.h>
 #include <grpc/grpc.h>
 
 extern "C" {
-#include "src/core/lib/slice/slice_internal.h"
 #include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/static_metadata.h"
-#include "src/core/lib/transport/transport.h"
 }
 
 #include "test/cpp/microbenchmarks/helpers.h"
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 auto& force_library_initialization = Library::get();
 
@@ -65,19 +63,6 @@ static void BM_SliceFromCopied(benchmark::State& state) {
 }
 BENCHMARK(BM_SliceFromCopied);
 
-static void BM_SliceFromStreamOwnedBuffer(benchmark::State& state) {
-  grpc_stream_refcount r;
-  GRPC_STREAM_REF_INIT(&r, 1, NULL, NULL, "test");
-  char buffer[64];
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  while (state.KeepRunning()) {
-    grpc_slice_unref_internal(&exec_ctx, grpc_slice_from_stream_owned_buffer(
-                                             &r, buffer, sizeof(buffer)));
-  }
-  grpc_exec_ctx_finish(&exec_ctx);
-}
-BENCHMARK(BM_SliceFromStreamOwnedBuffer);
-
 static void BM_SliceIntern(benchmark::State& state) {
   TrackCounters track_counters;
   gpr_slice slice = grpc_slice_from_static_string("abc");
diff --git a/test/cpp/microbenchmarks/helpers.h b/test/cpp/microbenchmarks/helpers.h
index f44b7cf83a7e68e7307f6d90b0cf1821b8cc1ece..49ed517b1d75bda3cf6bf9c1055fc04782d86efd 100644
--- a/test/cpp/microbenchmarks/helpers.h
+++ b/test/cpp/microbenchmarks/helpers.h
@@ -41,8 +41,8 @@ extern "C" {
 #include "test/core/util/memory_counters.h"
 }
 
+#include <benchmark/benchmark.h>
 #include <grpc++/impl/grpc_library.h>
-#include "third_party/benchmark/include/benchmark/benchmark.h"
 
 class Library {
  public:
diff --git a/test/cpp/microbenchmarks/noop-benchmark.cc b/test/cpp/microbenchmarks/noop-benchmark.cc
index 99fa6d5f6e539c19bf7e6c7f70642666c55f92eb..7372ad04f25302701b03823400373ada6eea9902 100644
--- a/test/cpp/microbenchmarks/noop-benchmark.cc
+++ b/test/cpp/microbenchmarks/noop-benchmark.cc
@@ -34,7 +34,7 @@
 /* This benchmark exists to ensure that the benchmark integration is
  * working */
 
-#include "third_party/benchmark/include/benchmark/benchmark.h"
+#include <benchmark/benchmark.h>
 
 static void BM_NoOp(benchmark::State& state) {
   while (state.KeepRunning()) {
diff --git a/test/cpp/qps/BUILD b/test/cpp/qps/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..6492b63ec3023a826a9bc6102086bd2147e8515b
--- /dev/null
+++ b/test/cpp/qps/BUILD
@@ -0,0 +1,194 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+cc_library(
+    name = "parse_json",
+    srcs = ["parse_json.cc"],
+    hdrs = ["parse_json.h"],
+    deps = ["//:grpc++"],
+)
+
+cc_library(
+    name = "qps_worker_impl",
+    srcs = [
+        "client_async.cc",
+        "client_sync.cc",
+        "qps_worker.cc",
+        "server_async.cc",
+        "server_sync.cc",
+    ],
+    hdrs = [
+        "client.h",
+        "qps_worker.h",
+        "server.h",
+    ],
+    deps = [
+        ":histogram",
+        ":interarrival",
+        ":usage_timer",
+        "//:grpc",
+        "//:grpc++",
+        "//external:gtest",
+        "//src/proto/grpc/testing:control_proto",
+        "//src/proto/grpc/testing:payloads_proto",
+        "//src/proto/grpc/testing:services_proto",
+        "//test/core/end2end:ssl_test_data",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+        "//test/cpp/util:test_util",
+    ],
+)
+
+cc_library(
+    name = "driver_impl",
+    srcs = [
+        "driver.cc",
+        "report.cc",
+    ],
+    hdrs = [
+        "driver.h",
+        "report.h",
+    ],
+    deps = [
+        ":histogram",
+        ":parse_json",
+        ":qps_worker_impl",
+        "//:grpc++",
+        "//src/proto/grpc/testing:control_proto",
+        "//src/proto/grpc/testing:messages_proto",
+        "//src/proto/grpc/testing:services_proto",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+    ],
+)
+
+cc_library(
+    name = "benchmark_config",
+    srcs = [
+        "benchmark_config.cc",
+    ],
+    hdrs = [
+        "benchmark_config.h",
+    ],
+    deps = [
+        ":driver_impl",
+        ":histogram",
+        "//:grpc++",
+        "//external:gflags",
+        "//src/proto/grpc/testing:control_proto",
+    ],
+)
+
+cc_library(
+    name = "histogram",
+    hdrs = [
+        "histogram.h",
+        "stats.h",
+    ],
+    deps = ["//:gpr"],
+)
+
+cc_library(
+    name = "interarrival",
+    hdrs = ["interarrival.h"],
+    deps = ["//:grpc++"],
+)
+
+cc_binary(
+    name = "json_run_localhost",
+    srcs = ["json_run_localhost.cc"],
+    deps = [
+        "//:gpr",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+        "//test/cpp/util:test_util",
+    ],
+)
+
+cc_test(
+    name = "qps_interarrival_test",
+    srcs = ["qps_interarrival_test.cc"],
+    deps = [
+        ":histogram",
+        ":interarrival",
+    ],
+)
+
+cc_binary(
+    name = "qps_json_driver",
+    srcs = ["qps_json_driver.cc"],
+    deps = [
+        ":benchmark_config",
+        ":driver_impl",
+        "//:grpc++",
+        "//external:gflags",
+    ],
+)
+
+cc_test(
+    name = "qps_openloop_test",
+    srcs = ["qps_openloop_test.cc"],
+    deps = [
+        ":benchmark_config",
+        ":driver_impl",
+        ":qps_worker_impl",
+    ],
+)
+
+cc_test(
+    name = "secure_sync_unary_ping_pong_test",
+    srcs = ["secure_sync_unary_ping_pong_test.cc"],
+    deps = [
+        ":benchmark_config",
+        ":driver_impl",
+        "//:grpc++",
+    ],
+)
+
+cc_library(
+    name = "usage_timer",
+    srcs = ["usage_timer.cc"],
+    hdrs = ["usage_timer.h"],
+    deps = ["//:gpr"],
+)
+
+cc_binary(
+    name = "qps_worker",
+    srcs = ["worker.cc"],
+    deps = [
+        ":qps_worker_impl",
+        "//:grpc++",
+        "//test/core/util:gpr_test_util",
+        "//test/core/util:grpc_test_util",
+        "//test/cpp/util:test_config",
+        "//test/cpp/util:test_util",
+    ],
+)
diff --git a/test/cpp/util/benchmark_config.cc b/test/cpp/qps/benchmark_config.cc
similarity index 98%
rename from test/cpp/util/benchmark_config.cc
rename to test/cpp/qps/benchmark_config.cc
index 6fc864069ef05bf84c96ecd7bb275cb3e09c20dc..98b8d0ba3794b70e1b46720752410230fef567fa 100644
--- a/test/cpp/util/benchmark_config.cc
+++ b/test/cpp/qps/benchmark_config.cc
@@ -31,7 +31,7 @@
  *
  */
 
-#include "test/cpp/util/benchmark_config.h"
+#include "test/cpp/qps/benchmark_config.h"
 #include <gflags/gflags.h>
 
 DEFINE_bool(enable_log_reporter, true,
diff --git a/test/cpp/util/benchmark_config.h b/test/cpp/qps/benchmark_config.h
similarity index 100%
rename from test/cpp/util/benchmark_config.h
rename to test/cpp/qps/benchmark_config.h
diff --git a/test/cpp/qps/qps_json_driver.cc b/test/cpp/qps/qps_json_driver.cc
index bd2c1f0ec674becf12759f8153bdc5c7eb347ddf..a9061374748a479dac074c4995504bab58693daf 100644
--- a/test/cpp/qps/qps_json_driver.cc
+++ b/test/cpp/qps/qps_json_driver.cc
@@ -40,10 +40,10 @@
 #include <gflags/gflags.h>
 #include <grpc/support/log.h>
 
+#include "test/cpp/qps/benchmark_config.h"
 #include "test/cpp/qps/driver.h"
 #include "test/cpp/qps/parse_json.h"
 #include "test/cpp/qps/report.h"
-#include "test/cpp/util/benchmark_config.h"
 
 DEFINE_string(scenarios_file, "",
               "JSON file containing an array of Scenario objects");
diff --git a/test/cpp/qps/qps_openloop_test.cc b/test/cpp/qps/qps_openloop_test.cc
index 70e2709ac02cbb595ea89cc98bd2700c869325f6..28b396739fb45531fa1c9e23562685c9ca9240dd 100644
--- a/test/cpp/qps/qps_openloop_test.cc
+++ b/test/cpp/qps/qps_openloop_test.cc
@@ -36,9 +36,9 @@
 #include <grpc/support/log.h>
 
 #include "test/core/util/test_config.h"
+#include "test/cpp/qps/benchmark_config.h"
 #include "test/cpp/qps/driver.h"
 #include "test/cpp/qps/report.h"
-#include "test/cpp/util/benchmark_config.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/qps/qps_test.cc b/test/cpp/qps/qps_test.cc
index f94ea0cb499c174c0245c9b941361471df3445ad..7c4e2cfd3e1f7e3f30518c2013c1d85877c40a2f 100644
--- a/test/cpp/qps/qps_test.cc
+++ b/test/cpp/qps/qps_test.cc
@@ -35,9 +35,9 @@
 
 #include <grpc/support/log.h>
 
+#include "test/cpp/qps/benchmark_config.h"
 #include "test/cpp/qps/driver.h"
 #include "test/cpp/qps/report.h"
-#include "test/cpp/util/benchmark_config.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/qps/secure_sync_unary_ping_pong_test.cc b/test/cpp/qps/secure_sync_unary_ping_pong_test.cc
index d0c47d102ad0b541f27e2e72c224ec6f7aa43833..509d9f89c3849e3f021372a161d3aa48d1599b5d 100644
--- a/test/cpp/qps/secure_sync_unary_ping_pong_test.cc
+++ b/test/cpp/qps/secure_sync_unary_ping_pong_test.cc
@@ -35,9 +35,9 @@
 
 #include <grpc/support/log.h>
 
+#include "test/cpp/qps/benchmark_config.h"
 #include "test/cpp/qps/driver.h"
 #include "test/cpp/qps/report.h"
-#include "test/cpp/util/benchmark_config.h"
 
 namespace grpc {
 namespace testing {
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index b58d91eea637634f4ce553aaa7010dda8647df57..b499b82091e55d48d618a61677fbb7bd4ab5eb04 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -235,18 +235,17 @@ class AsyncQpsServerTest final : public grpc::testing::Server {
         return false;
       }
 
-      ResponseType response;
-
       // Call the RPC processing function
-      grpc::Status status = invoke_method_(&req_, &response);
+      grpc::Status status = invoke_method_(&req_, &response_);
 
       // Have the response writer work and invoke on_finish when done
       next_state_ = &ServerRpcContextUnaryImpl::finisher;
-      response_writer_.Finish(response, status, AsyncQpsServerTest::tag(this));
+      response_writer_.Finish(response_, status, AsyncQpsServerTest::tag(this));
       return true;
     }
     std::unique_ptr<ServerContextType> srv_ctx_;
     RequestType req_;
+    ResponseType response_;
     bool (ServerRpcContextUnaryImpl::*next_state_)(bool);
     std::function<void(ServerContextType *, RequestType *,
                        grpc::ServerAsyncResponseWriter<ResponseType> *, void *)>
@@ -298,11 +297,10 @@ class AsyncQpsServerTest final : public grpc::testing::Server {
     bool read_done(bool ok) {
       if (ok) {
         // invoke the method
-        ResponseType response;
         // Call the RPC processing function
-        grpc::Status status = invoke_method_(&req_, &response);
+        grpc::Status status = invoke_method_(&req_, &response_);
         // initiate the write
-        stream_.Write(response, AsyncQpsServerTest::tag(this));
+        stream_.Write(response_, AsyncQpsServerTest::tag(this));
         next_state_ = &ServerRpcContextStreamingImpl::write_done;
       } else {  // client has sent writes done
         // finish the stream
@@ -326,6 +324,7 @@ class AsyncQpsServerTest final : public grpc::testing::Server {
 
     std::unique_ptr<ServerContextType> srv_ctx_;
     RequestType req_;
+    ResponseType response_;
     bool (ServerRpcContextStreamingImpl::*next_state_)(bool);
     std::function<void(
         ServerContextType *,
diff --git a/third_party/benchmark.BUILD b/third_party/benchmark.BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..4c622f32a84e83765e2d1a481f6ff47c615f9751
--- /dev/null
+++ b/third_party/benchmark.BUILD
@@ -0,0 +1,15 @@
+cc_library(
+    name = "benchmark",
+    srcs = glob(["src/*.cc"]),
+    hdrs = glob(["include/**/*.h", "src/*.h"]),
+    includes = [
+        "include", "."
+    ],
+    copts = [
+        "-DHAVE_POSIX_REGEX"
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
+)
diff --git a/third_party/cares/ares_build.h b/third_party/cares/ares_build.h
new file mode 100644
index 0000000000000000000000000000000000000000..7d69f1e6aecdd5cf729f4006503d7fd43632ccfe
--- /dev/null
+++ b/third_party/cares/ares_build.h
@@ -0,0 +1,254 @@
+#ifndef __CARES_BUILD_H
+#define __CARES_BUILD_H
+
+
+/* Copyright (C) 2009 - 2013 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  M.I.T. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/* ================================================================ */
+/*               NOTES FOR CONFIGURE CAPABLE SYSTEMS                */
+/* ================================================================ */
+
+/*
+ * NOTE 1:
+ * -------
+ *
+ * See file ares_build.h.in, run configure, and forget that this file
+ * exists it is only used for non-configure systems.
+ * But you can keep reading if you want ;-)
+ *
+ */
+
+/* ================================================================ */
+/*                 NOTES FOR NON-CONFIGURE SYSTEMS                  */
+/* ================================================================ */
+
+/*
+ * NOTE 1:
+ * -------
+ *
+ * Nothing in this file is intended to be modified or adjusted by the
+ * c-ares library user nor by the c-ares library builder.
+ *
+ * If you think that something actually needs to be changed, adjusted
+ * or fixed in this file, then, report it on the c-ares development
+ * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/
+ *
+ * Try to keep one section per platform, compiler and architecture,
+ * otherwise, if an existing section is reused for a different one and
+ * later on the original is adjusted, probably the piggybacking one can
+ * be adversely changed.
+ *
+ * In order to differentiate between platforms/compilers/architectures
+ * use only compiler built in predefined preprocessor symbols.
+ *
+ * This header file shall only export symbols which are 'cares' or 'CARES'
+ * prefixed, otherwise public name space would be polluted.
+ *
+ * NOTE 2:
+ * -------
+ *
+ * Right now you might be staring at file ares_build.h.dist or ares_build.h,
+ * this is due to the following reason: file ares_build.h.dist is renamed
+ * to ares_build.h when the c-ares source code distribution archive file is
+ * created.
+ *
+ * File ares_build.h.dist is not included in the distribution archive.
+ * File ares_build.h is not present in the git tree.
+ *
+ * The distributed ares_build.h file is only intended to be used on systems
+ * which can not run the also distributed configure script.
+ *
+ * On systems capable of running the configure script, the configure process
+ * will overwrite the distributed ares_build.h file with one that is suitable
+ * and specific to the library being configured and built, which is generated
+ * from the ares_build.h.in template file.
+ *
+ * If you check out from git on a non-configure platform, you must run the
+ * appropriate buildconf* script to set up ares_build.h and other local files.
+ *
+ */
+
+/* ================================================================ */
+/*  DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE  */
+/* ================================================================ */
+
+#ifdef CARES_SIZEOF_LONG
+#  error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h"
+   Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined
+#endif
+
+#ifdef CARES_TYPEOF_ARES_SOCKLEN_T
+#  error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h"
+   Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined
+#endif
+
+#ifdef CARES_SIZEOF_ARES_SOCKLEN_T
+#  error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h"
+   Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined
+#endif
+
+/* ================================================================ */
+/*    EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY    */
+/* ================================================================ */
+
+#if defined(__DJGPP__) || defined(__GO32__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__SALFORDC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__BORLANDC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__TURBOC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__WATCOMC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__POCC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__LCC__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__SYMBIAN32__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__MWERKS__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(_WIN32_WCE)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__MINGW32__)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__VMS)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+#elif defined(__OS400__)
+#  if defined(__ILEC400__)
+#    define CARES_SIZEOF_LONG           4
+#    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
+#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
+#    define CARES_PULL_SYS_TYPES_H      1
+#    define CARES_PULL_SYS_SOCKET_H     1
+#  endif
+
+#elif defined(__MVS__)
+#  if defined(__IBMC__) || defined(__IBMCPP__)
+#    if defined(_ILP32)
+#      define CARES_SIZEOF_LONG           4
+#    elif defined(_LP64)
+#      define CARES_SIZEOF_LONG           8
+#    endif
+#    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
+#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
+#    define CARES_PULL_SYS_TYPES_H      1
+#    define CARES_PULL_SYS_SOCKET_H     1
+#  endif
+
+#elif defined(__370__)
+#  if defined(__IBMC__) || defined(__IBMCPP__)
+#    if defined(_ILP32)
+#      define CARES_SIZEOF_LONG           4
+#    elif defined(_LP64)
+#      define CARES_SIZEOF_LONG           8
+#    endif
+#    define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
+#    define CARES_SIZEOF_ARES_SOCKLEN_T 4
+#    define CARES_PULL_SYS_TYPES_H      1
+#    define CARES_PULL_SYS_SOCKET_H     1
+#  endif
+
+#elif defined(TPF)
+#  define CARES_SIZEOF_LONG           8
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+/* ===================================== */
+/*    KEEP MSVC THE PENULTIMATE ENTRY    */
+/* ===================================== */
+
+#elif defined(_MSC_VER)
+#  define CARES_SIZEOF_LONG           4
+#  define CARES_TYPEOF_ARES_SOCKLEN_T int
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+
+/* ===================================== */
+/*    KEEP GENERIC GCC THE LAST ENTRY    */
+/* ===================================== */
+
+#elif defined(__GNUC__)
+#  if defined(__LP64__) || \
+        defined(__x86_64__) || defined(__ppc64__)
+#    define CARES_SIZEOF_LONG           8
+#  elif defined(__ILP32__) || \
+      defined(__i386__) || defined(__ppc__) || defined(__arm__)
+#    define CARES_SIZEOF_LONG           4
+#  endif
+#  define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
+#  define CARES_SIZEOF_ARES_SOCKLEN_T 4
+#  define CARES_PULL_SYS_TYPES_H      1
+#  define CARES_PULL_SYS_SOCKET_H     1
+
+#else
+#  error "Unknown non-configure build target!"
+   Error Compilation_aborted_Unknown_non_configure_build_target
+#endif
+
+/* CARES_PULL_SYS_TYPES_H is defined above when inclusion of header file  */
+/* sys/types.h is required here to properly make type definitions below.  */
+#ifdef CARES_PULL_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+
+/* CARES_PULL_SYS_SOCKET_H is defined above when inclusion of header file  */
+/* sys/socket.h is required here to properly make type definitions below.  */
+#ifdef CARES_PULL_SYS_SOCKET_H
+#  include <sys/socket.h>
+#endif
+
+/* Data type definition of ares_socklen_t. */
+
+#ifdef CARES_TYPEOF_ARES_SOCKLEN_T
+  typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;
+#endif
+
+#endif /* __CARES_BUILD_H */
diff --git a/third_party/cares/cares b/third_party/cares/cares
new file mode 160000
index 0000000000000000000000000000000000000000..7691f773af79bf75a62d1863fd0f13ebf9dc51b1
--- /dev/null
+++ b/third_party/cares/cares
@@ -0,0 +1 @@
+Subproject commit 7691f773af79bf75a62d1863fd0f13ebf9dc51b1
diff --git a/third_party/cares/cares.BUILD b/third_party/cares/cares.BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..48096aa0551fd9aa5b6032f4d28a556e2b1df9e1
--- /dev/null
+++ b/third_party/cares/cares.BUILD
@@ -0,0 +1,94 @@
+cc_library(
+    name = "ares",
+    srcs = [
+        "cares/ares__close_sockets.c",
+        "cares/ares__get_hostent.c",
+        "cares/ares__read_line.c",
+        "cares/ares__timeval.c",
+        "cares/ares_cancel.c",
+        "cares/ares_create_query.c",
+        "cares/ares_data.c",
+        "cares/ares_destroy.c",
+        "cares/ares_expand_name.c",
+        "cares/ares_expand_string.c",
+        "cares/ares_fds.c",
+        "cares/ares_free_hostent.c",
+        "cares/ares_free_string.c",
+        "cares/ares_getenv.c",
+        "cares/ares_gethostbyaddr.c",
+        "cares/ares_gethostbyname.c",
+        "cares/ares_getnameinfo.c",
+        "cares/ares_getopt.c",
+        "cares/ares_getsock.c",
+        "cares/ares_init.c",
+        "cares/ares_library_init.c",
+        "cares/ares_llist.c",
+        "cares/ares_mkquery.c",
+        "cares/ares_nowarn.c",
+        "cares/ares_options.c",
+        "cares/ares_parse_a_reply.c",
+        "cares/ares_parse_aaaa_reply.c",
+        "cares/ares_parse_mx_reply.c",
+        "cares/ares_parse_naptr_reply.c",
+        "cares/ares_parse_ns_reply.c",
+        "cares/ares_parse_ptr_reply.c",
+        "cares/ares_parse_soa_reply.c",
+        "cares/ares_parse_srv_reply.c",
+        "cares/ares_parse_txt_reply.c",
+        "cares/ares_platform.c",
+        "cares/ares_process.c",
+        "cares/ares_query.c",
+        "cares/ares_search.c",
+        "cares/ares_send.c",
+        "cares/ares_strcasecmp.c",
+        "cares/ares_strdup.c",
+        "cares/ares_strerror.c",
+        "cares/ares_timeout.c",
+        "cares/ares_version.c",
+        "cares/ares_writev.c",
+        "cares/bitncmp.c",
+        "cares/inet_net_pton.c",
+        "cares/inet_ntop.c",
+        "cares/windows_port.c",
+    ],
+    hdrs = [
+        "ares_build.h",
+        "config_linux/ares_config.h",
+        "cares/ares.h",
+        "cares/ares_data.h",
+        "cares/ares_dns.h",
+        "cares/ares_getenv.h",
+        "cares/ares_getopt.h",
+        "cares/ares_inet_net_pton.h",
+        "cares/ares_iphlpapi.h",
+        "cares/ares_ipv6.h",
+        "cares/ares_library_init.h",
+        "cares/ares_llist.h",
+        "cares/ares_nowarn.h",
+        "cares/ares_platform.h",
+        "cares/ares_private.h",
+        "cares/ares_rules.h",
+        "cares/ares_setup.h",
+        "cares/ares_strcasecmp.h",
+        "cares/ares_strdup.h",
+        "cares/ares_version.h",
+        "cares/bitncmp.h",
+        "cares/config-win32.h",
+        "cares/setup_once.h",
+    ],
+    includes = [
+        ".",
+        "config_linux",
+        "cares",
+    ],
+    linkstatic = 1,
+    visibility = [
+        "//visibility:public",
+    ],
+    copts = [
+        "-D_GNU_SOURCE",
+        "-D_HAS_EXCEPTIONS=0",
+        "-DNOMINMAX",
+        "-DHAVE_CONFIG_H",
+    ],
+)
diff --git a/third_party/cares/config_darwin/ares_config.h b/third_party/cares/config_darwin/ares_config.h
new file mode 100644
index 0000000000000000000000000000000000000000..0f5bd4b6a537845ed7136859a803f24fe4dc5102
--- /dev/null
+++ b/third_party/cares/config_darwin/ares_config.h
@@ -0,0 +1,523 @@
+/* ares_config.h.  Generated from ares_config.h.in by configure.  */
+/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* Defined for build that exposes internal static functions for testing. */
+/* #undef CARES_EXPOSE_STATICS */
+
+/* Defined for build with symbol hiding. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
+
+/* Use resolver library to configure cares */
+/* #undef CARES_USE_LIBRESOLV */
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type of arg 2 for gethostname. */
+#define GETHOSTNAME_TYPE_ARG2 size_t
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 socklen_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+/* #undef GETSERVBYPORT_R_ARGS */
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+/* #undef GETSERVBYPORT_R_BUFSIZE */
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* define if the compiler supports basic C++11 syntax */
+#define HAVE_CXX11 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the getenv function. */
+#define HAVE_GETENV 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+/* #undef HAVE_GETSERVBYPORT_R */
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
+#define HAVE_INET_NET_PTON 1
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+   */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+/* #undef HAVE_MSG_NOSIGNAL */
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* cpu-machine-OS */
+#define OS "i386-apple-darwin9.8.0"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares -"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "-"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type qualifier pointed by arg 5 for recvfrom. */
+#define RECVFROM_QUAL_ARG5
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV ssize_t
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV ssize_t
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV ssize_t
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `short', as computed by sizeof. */
+#define SIZEOF_SHORT 2
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "-"
+
+/* Define to avoid automatic inclusion of winsock.h */
+/* #undef WIN32_LEAN_AND_MEAN */
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* #  undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* #  undef _ALL_SOURCE */
+#endif
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
diff --git a/third_party/cares/config_linux/ares_config.h b/third_party/cares/config_linux/ares_config.h
new file mode 100644
index 0000000000000000000000000000000000000000..265974cfae442812955a5913dfe08c1d796e920a
--- /dev/null
+++ b/third_party/cares/config_linux/ares_config.h
@@ -0,0 +1,524 @@
+/* ares_config.h.  Generated from ares_config.h.in by configure.  */
+/* ares_config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* Defined for build that exposes internal static functions for testing. */
+/* #undef CARES_EXPOSE_STATICS */
+
+/* Defined for build with symbol hiding. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((__visibility__ ("default")))
+
+/* Use resolver library to configure cares */
+/* #undef CARES_USE_LIBRESOLV */
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type of arg 2 for gethostname. */
+#define GETHOSTNAME_TYPE_ARG2 size_t
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 socklen_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 6
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE 4096
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* define if the compiler supports basic C++11 syntax */
+#define HAVE_CXX11 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the getenv function. */
+#define HAVE_GETENV 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have a IPv6 capable working inet_net_pton function. */
+/* #undef HAVE_INET_NET_PTON */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+   */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+#define HAVE_STROPTS_H 1
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* cpu-machine-OS */
+#define OS "i386-unknown-linux-gnu"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares -"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "-"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type qualifier pointed by arg 5 for recvfrom. */
+#define RECVFROM_QUAL_ARG5 
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV ssize_t
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV ssize_t
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV ssize_t
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `short', as computed by sizeof. */
+#define SIZEOF_SHORT 2
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "-"
+
+/* Define to avoid automatic inclusion of winsock.h */
+/* #undef WIN32_LEAN_AND_MEAN */
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* #  undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* #  undef _ALL_SOURCE */
+#endif
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
diff --git a/tools/README.md b/tools/README.md
index d051846c33ea07b5e370cfd903c5d3fb3001d6d1..62e91246d0a41b56f8ad0334bf0d115602af36fb 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -16,3 +16,6 @@ internal_ci: Support for running tests on an internal CI platform.
 jenkins: Support for running tests on Jenkins.
 
 run_tests: Scripts to run gRPC tests in parallel.
+
+run_tests/performance: See the [README](./run_tests/performance/README.md) for
+more notes on the performance tests.
diff --git a/tools/buildgen/generate_build_additions.sh b/tools/buildgen/generate_build_additions.sh
index a4373ed350319f4e221bb0eac7fc7ea376b2f843..9b5e2113af855a3d58a29fab3d0506501bc19169 100644
--- a/tools/buildgen/generate_build_additions.sh
+++ b/tools/buildgen/generate_build_additions.sh
@@ -35,6 +35,7 @@ gen_build_yaml_dirs="  \
   src/benchmark \
   src/proto            \
   src/zlib             \
+  src/c-ares           \
   test/core/bad_client \
   test/core/bad_ssl    \
   test/core/end2end    \
diff --git a/tools/buildgen/plugins/expand_bin_attrs.py b/tools/buildgen/plugins/expand_bin_attrs.py
index dc72bf3b9d1370f9f549096bdfe671f24b0b9f27..f52168a9d3728fa649342c2f44a48416a2926dfc 100755
--- a/tools/buildgen/plugins/expand_bin_attrs.py
+++ b/tools/buildgen/plugins/expand_bin_attrs.py
@@ -52,9 +52,11 @@ def mako_plugin(dictionary):
     tgt['ci_platforms'] = sorted(tgt.get('ci_platforms', tgt['platforms']))
     tgt['boringssl'] = tgt.get('boringssl', False)
     tgt['zlib'] = tgt.get('zlib', False)
+    tgt['ares'] = tgt.get('ares', False)
     tgt['gtest'] = tgt.get('gtest', False)
 
   libs = dictionary.get('libs')
   for lib in libs:
     lib['boringssl'] = lib.get('boringssl', False)
     lib['zlib'] = lib.get('zlib', False)
+    lib['ares'] = lib.get('ares', False)
diff --git a/tools/buildgen/plugins/expand_filegroups.py b/tools/buildgen/plugins/expand_filegroups.py
index 46739f8f1006865ec1f01ccdb6cbb9c7c87a8148..9eaba463ec0b2cf448859d1a937b9a8d800d3f8b 100755
--- a/tools/buildgen/plugins/expand_filegroups.py
+++ b/tools/buildgen/plugins/expand_filegroups.py
@@ -57,6 +57,7 @@ FILEGROUP_DEFAULTS = {
   'language': 'c',
   'boringssl': False,
   'zlib': False,
+  'ares': False,
 }
 
 
diff --git a/tools/distrib/check_copyright.py b/tools/distrib/check_copyright.py
index 611a9f40ae97d203d4158bfe2362ddb01937f6b1..710e8709e9972ab3c6c4c6f31e02649983c44248 100755
--- a/tools/distrib/check_copyright.py
+++ b/tools/distrib/check_copyright.py
@@ -111,6 +111,8 @@ _EXEMPT = frozenset((
 
   # An older file originally from outside gRPC.
   'src/php/tests/bootstrap.php',
+  # census.proto copied from github
+  'tools/grpcz/census.proto',
 ))
 
 
@@ -125,7 +127,9 @@ RE_LICENSE = dict(
 if args.precommit:
   FILE_LIST_COMMAND = 'git status -z | grep -Poz \'(?<=^[MARC][MARCD ] )[^\s]+\''
 else:
-  FILE_LIST_COMMAND = 'git ls-tree -r --name-only -r HEAD | grep -v ^third_party/'
+  FILE_LIST_COMMAND = 'git ls-tree -r --name-only -r HEAD | ' \
+                      'grep -v ^third_party/ |' \
+                      'grep -v "\(ares_config.h\|ares_build.h\)"'
 
 def load(name):
   with open(name) as f:
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index ed27f1f83505d526247021df7b54d77219c8d943..211d442f1767462adf0f3c6d616812c2d3a83408 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -203,6 +203,10 @@ def extension_modules():
 setuptools.setup(
   name='grpcio-tools',
   version=grpc_version.VERSION,
+  description='Protobuf code generator for gRPC',
+  author='The gRPC Authors',
+  author_email='grpc-io@googlegroups.com',
+  url='http://www.grpc.io',
   license='3-clause BSD',
   ext_modules=extension_modules(),
   packages=setuptools.find_packages('.'),
diff --git a/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile b/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
index 71098629112ce5f7528f0ae815e72f816417c16e..06be7bec184f42546ae600fcc85e5b1b9406b2e2 100644
--- a/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_python_manylinux_x64/Dockerfile
@@ -39,7 +39,7 @@ RUN yum update -y
 RUN yum remove -y git
 RUN yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc
 RUN cd /usr/src && \
-  wget https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
+  curl -O -L https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
   tar xzf git-2.0.5.tar.gz
 RUN cd /usr/src/git-2.0.5 && \
   make prefix=/usr/local/git all && \
diff --git a/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile b/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
index 36286bca53df06c5a70e2e92f1b3d413c422be86..8693e30cb4a58f38ebe6a9d9a004ff07195d3b39 100644
--- a/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_python_manylinux_x86/Dockerfile
@@ -39,7 +39,7 @@ RUN yum update -y
 RUN yum remove -y git
 RUN yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc
 RUN cd /usr/src && \
-  wget https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
+  curl -O -L https://kernel.org/pub/software/scm/git/git-2.0.5.tar.gz && \
   tar xzf git-2.0.5.tar.gz
 RUN cd /usr/src/git-2.0.5 && \
   make prefix=/usr/local/git all && \
diff --git a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
index d3bf071c72e4a585a14d8729ff55f6bbae41efbc..d7a0b1786b9811bd346a743120b5134447f34a5c 100644
--- a/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_go/Dockerfile
@@ -27,7 +27,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-FROM golang:1.5
+FROM golang:latest
 
 # Using login shell removes Go from path, so we add it.
 RUN ln -s /usr/local/go/bin/go /usr/local/bin
diff --git a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
index acc984acb0daae68bda9a2855a2fac05b8ec591e..094a4e096df6e1227d644618ccfb18aadb7a6739 100644
--- a/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
+++ b/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile
@@ -27,7 +27,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-FROM golang:1.5
+FROM golang:latest
 
 # Using login shell removes Go from path, so we add it.
 RUN ln -s /usr/local/go/bin/go /usr/local/bin
@@ -47,7 +47,7 @@ RUN pip install pip --upgrade
 RUN pip install virtualenv
 RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
 
-RUN pip install twisted h2 hyper
+RUN pip install twisted h2==2.6.1 hyper
 
 # Define the default command.
 CMD ["bash"]
diff --git a/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile b/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
index bbf7de7f91dfcfe139372e7b3c9d770eb0cf5430..c099f339aeee5607f02a0718a239690bcede2de2 100644
--- a/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
+++ b/tools/dockerfile/stress_test/grpc_interop_stress_go/Dockerfile
@@ -27,7 +27,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-FROM golang:1.5
+FROM golang:latest
 
 # Google Cloud platform API libraries
 RUN apt-get update && apt-get install -y python-pip && apt-get clean
diff --git a/tools/dockerfile/test/multilang_jessie_x64/Dockerfile b/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
index 5d0c1686f18a8d6201be91eec66f6dca0bdb18cd..ea57d88c870883fa77f8a06cc1ba896e3cd807aa 100644
--- a/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
+++ b/tools/dockerfile/test/multilang_jessie_x64/Dockerfile
@@ -135,6 +135,10 @@ RUN pip install pip --upgrade
 RUN pip install virtualenv
 RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.2.0 six==1.10.0
 
+# Install coverage for Python test coverage reporting
+RUN pip install coverage
+ENV PATH ~/.local/bin:$PATH
+
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
 RUN ln -s /usr/bin/ccache /usr/local/bin/g++
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 2469b90bdb7c1dcab68369a9e7cc677daf584a45..59e619749a88a24c24d63be365b1021f973a3a91 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -870,6 +870,12 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
+include/grpc/byte_buffer.h \
+include/grpc/byte_buffer_reader.h \
+include/grpc/compression.h \
+include/grpc/grpc.h \
+include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
 include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
@@ -888,7 +894,11 @@ include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
-include/grpc/impl/codegen/sync_windows.h
+include/grpc/impl/codegen/sync_windows.h \
+include/grpc/load_reporting.h \
+include/grpc/slice.h \
+include/grpc/slice_buffer.h \
+include/grpc/status.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 117738aed826d3bc05354b29d711f34fb37dec69..6d171e3299c2af3f0fe921c8a8793b1357fd99e6 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -871,6 +871,12 @@ include/grpc++/support/string_ref.h \
 include/grpc++/support/stub_options.h \
 include/grpc++/support/sync_stream.h \
 include/grpc++/support/time.h \
+include/grpc/byte_buffer.h \
+include/grpc/byte_buffer_reader.h \
+include/grpc/compression.h \
+include/grpc/grpc.h \
+include/grpc/grpc_posix.h \
+include/grpc/grpc_security_constants.h \
 include/grpc/impl/codegen/atm.h \
 include/grpc/impl/codegen/atm_gcc_atomic.h \
 include/grpc/impl/codegen/atm_gcc_sync.h \
@@ -890,6 +896,246 @@ include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync_generic.h \
 include/grpc/impl/codegen/sync_posix.h \
 include/grpc/impl/codegen/sync_windows.h \
+include/grpc/load_reporting.h \
+include/grpc/slice.h \
+include/grpc/slice_buffer.h \
+include/grpc/status.h \
+src/core/lib/channel/channel_args.c \
+src/core/lib/channel/channel_args.h \
+src/core/lib/channel/channel_stack.c \
+src/core/lib/channel/channel_stack.h \
+src/core/lib/channel/channel_stack_builder.c \
+src/core/lib/channel/channel_stack_builder.h \
+src/core/lib/channel/compress_filter.c \
+src/core/lib/channel/compress_filter.h \
+src/core/lib/channel/connected_channel.c \
+src/core/lib/channel/connected_channel.h \
+src/core/lib/channel/context.h \
+src/core/lib/channel/deadline_filter.c \
+src/core/lib/channel/deadline_filter.h \
+src/core/lib/channel/handshaker.c \
+src/core/lib/channel/handshaker.h \
+src/core/lib/channel/handshaker_factory.c \
+src/core/lib/channel/handshaker_factory.h \
+src/core/lib/channel/handshaker_registry.c \
+src/core/lib/channel/handshaker_registry.h \
+src/core/lib/channel/http_client_filter.c \
+src/core/lib/channel/http_client_filter.h \
+src/core/lib/channel/http_server_filter.c \
+src/core/lib/channel/http_server_filter.h \
+src/core/lib/channel/max_age_filter.c \
+src/core/lib/channel/max_age_filter.h \
+src/core/lib/channel/message_size_filter.c \
+src/core/lib/channel/message_size_filter.h \
+src/core/lib/compression/algorithm_metadata.h \
+src/core/lib/compression/compression.c \
+src/core/lib/compression/message_compress.c \
+src/core/lib/compression/message_compress.h \
+src/core/lib/debug/trace.c \
+src/core/lib/debug/trace.h \
+src/core/lib/http/format_request.c \
+src/core/lib/http/format_request.h \
+src/core/lib/http/httpcli.c \
+src/core/lib/http/httpcli.h \
+src/core/lib/http/parser.c \
+src/core/lib/http/parser.h \
+src/core/lib/iomgr/closure.c \
+src/core/lib/iomgr/closure.h \
+src/core/lib/iomgr/combiner.c \
+src/core/lib/iomgr/combiner.h \
+src/core/lib/iomgr/endpoint.c \
+src/core/lib/iomgr/endpoint.h \
+src/core/lib/iomgr/endpoint_pair.h \
+src/core/lib/iomgr/endpoint_pair_posix.c \
+src/core/lib/iomgr/endpoint_pair_uv.c \
+src/core/lib/iomgr/endpoint_pair_windows.c \
+src/core/lib/iomgr/error.c \
+src/core/lib/iomgr/error.h \
+src/core/lib/iomgr/error_internal.h \
+src/core/lib/iomgr/ev_epoll_linux.c \
+src/core/lib/iomgr/ev_epoll_linux.h \
+src/core/lib/iomgr/ev_poll_posix.c \
+src/core/lib/iomgr/ev_poll_posix.h \
+src/core/lib/iomgr/ev_posix.c \
+src/core/lib/iomgr/ev_posix.h \
+src/core/lib/iomgr/exec_ctx.c \
+src/core/lib/iomgr/exec_ctx.h \
+src/core/lib/iomgr/executor.c \
+src/core/lib/iomgr/executor.h \
+src/core/lib/iomgr/iocp_windows.c \
+src/core/lib/iomgr/iocp_windows.h \
+src/core/lib/iomgr/iomgr.c \
+src/core/lib/iomgr/iomgr.h \
+src/core/lib/iomgr/iomgr_internal.h \
+src/core/lib/iomgr/iomgr_posix.c \
+src/core/lib/iomgr/iomgr_posix.h \
+src/core/lib/iomgr/iomgr_uv.c \
+src/core/lib/iomgr/iomgr_windows.c \
+src/core/lib/iomgr/load_file.c \
+src/core/lib/iomgr/load_file.h \
+src/core/lib/iomgr/network_status_tracker.c \
+src/core/lib/iomgr/network_status_tracker.h \
+src/core/lib/iomgr/polling_entity.c \
+src/core/lib/iomgr/polling_entity.h \
+src/core/lib/iomgr/pollset.h \
+src/core/lib/iomgr/pollset_set.h \
+src/core/lib/iomgr/pollset_set_uv.c \
+src/core/lib/iomgr/pollset_set_windows.c \
+src/core/lib/iomgr/pollset_set_windows.h \
+src/core/lib/iomgr/pollset_uv.c \
+src/core/lib/iomgr/pollset_uv.h \
+src/core/lib/iomgr/pollset_windows.c \
+src/core/lib/iomgr/pollset_windows.h \
+src/core/lib/iomgr/port.h \
+src/core/lib/iomgr/resolve_address.h \
+src/core/lib/iomgr/resolve_address_posix.c \
+src/core/lib/iomgr/resolve_address_uv.c \
+src/core/lib/iomgr/resolve_address_windows.c \
+src/core/lib/iomgr/resource_quota.c \
+src/core/lib/iomgr/resource_quota.h \
+src/core/lib/iomgr/sockaddr.h \
+src/core/lib/iomgr/sockaddr_posix.h \
+src/core/lib/iomgr/sockaddr_utils.c \
+src/core/lib/iomgr/sockaddr_utils.h \
+src/core/lib/iomgr/sockaddr_windows.h \
+src/core/lib/iomgr/socket_factory_posix.c \
+src/core/lib/iomgr/socket_factory_posix.h \
+src/core/lib/iomgr/socket_mutator.c \
+src/core/lib/iomgr/socket_mutator.h \
+src/core/lib/iomgr/socket_utils.h \
+src/core/lib/iomgr/socket_utils_common_posix.c \
+src/core/lib/iomgr/socket_utils_linux.c \
+src/core/lib/iomgr/socket_utils_posix.c \
+src/core/lib/iomgr/socket_utils_posix.h \
+src/core/lib/iomgr/socket_utils_uv.c \
+src/core/lib/iomgr/socket_utils_windows.c \
+src/core/lib/iomgr/socket_windows.c \
+src/core/lib/iomgr/socket_windows.h \
+src/core/lib/iomgr/tcp_client.h \
+src/core/lib/iomgr/tcp_client_posix.c \
+src/core/lib/iomgr/tcp_client_posix.h \
+src/core/lib/iomgr/tcp_client_uv.c \
+src/core/lib/iomgr/tcp_client_windows.c \
+src/core/lib/iomgr/tcp_posix.c \
+src/core/lib/iomgr/tcp_posix.h \
+src/core/lib/iomgr/tcp_server.h \
+src/core/lib/iomgr/tcp_server_posix.c \
+src/core/lib/iomgr/tcp_server_utils_posix.h \
+src/core/lib/iomgr/tcp_server_utils_posix_common.c \
+src/core/lib/iomgr/tcp_server_utils_posix_ifaddrs.c \
+src/core/lib/iomgr/tcp_server_utils_posix_noifaddrs.c \
+src/core/lib/iomgr/tcp_server_uv.c \
+src/core/lib/iomgr/tcp_server_windows.c \
+src/core/lib/iomgr/tcp_uv.c \
+src/core/lib/iomgr/tcp_uv.h \
+src/core/lib/iomgr/tcp_windows.c \
+src/core/lib/iomgr/tcp_windows.h \
+src/core/lib/iomgr/time_averaged_stats.c \
+src/core/lib/iomgr/time_averaged_stats.h \
+src/core/lib/iomgr/timer.h \
+src/core/lib/iomgr/timer_generic.c \
+src/core/lib/iomgr/timer_generic.h \
+src/core/lib/iomgr/timer_heap.c \
+src/core/lib/iomgr/timer_heap.h \
+src/core/lib/iomgr/timer_uv.c \
+src/core/lib/iomgr/timer_uv.h \
+src/core/lib/iomgr/udp_server.c \
+src/core/lib/iomgr/udp_server.h \
+src/core/lib/iomgr/unix_sockets_posix.c \
+src/core/lib/iomgr/unix_sockets_posix.h \
+src/core/lib/iomgr/unix_sockets_posix_noop.c \
+src/core/lib/iomgr/wakeup_fd_cv.c \
+src/core/lib/iomgr/wakeup_fd_cv.h \
+src/core/lib/iomgr/wakeup_fd_eventfd.c \
+src/core/lib/iomgr/wakeup_fd_nospecial.c \
+src/core/lib/iomgr/wakeup_fd_pipe.c \
+src/core/lib/iomgr/wakeup_fd_pipe.h \
+src/core/lib/iomgr/wakeup_fd_posix.c \
+src/core/lib/iomgr/wakeup_fd_posix.h \
+src/core/lib/iomgr/workqueue.h \
+src/core/lib/iomgr/workqueue_uv.c \
+src/core/lib/iomgr/workqueue_uv.h \
+src/core/lib/iomgr/workqueue_windows.c \
+src/core/lib/iomgr/workqueue_windows.h \
+src/core/lib/json/json.c \
+src/core/lib/json/json.h \
+src/core/lib/json/json_common.h \
+src/core/lib/json/json_reader.c \
+src/core/lib/json/json_reader.h \
+src/core/lib/json/json_string.c \
+src/core/lib/json/json_writer.c \
+src/core/lib/json/json_writer.h \
+src/core/lib/slice/b64.c \
+src/core/lib/slice/b64.h \
+src/core/lib/slice/percent_encoding.c \
+src/core/lib/slice/percent_encoding.h \
+src/core/lib/slice/slice.c \
+src/core/lib/slice/slice_buffer.c \
+src/core/lib/slice/slice_hash_table.c \
+src/core/lib/slice/slice_hash_table.h \
+src/core/lib/slice/slice_intern.c \
+src/core/lib/slice/slice_internal.h \
+src/core/lib/slice/slice_string_helpers.c \
+src/core/lib/slice/slice_string_helpers.h \
+src/core/lib/surface/alarm.c \
+src/core/lib/surface/api_trace.c \
+src/core/lib/surface/api_trace.h \
+src/core/lib/surface/byte_buffer.c \
+src/core/lib/surface/byte_buffer_reader.c \
+src/core/lib/surface/call.c \
+src/core/lib/surface/call.h \
+src/core/lib/surface/call_details.c \
+src/core/lib/surface/call_log_batch.c \
+src/core/lib/surface/call_test_only.h \
+src/core/lib/surface/channel.c \
+src/core/lib/surface/channel.h \
+src/core/lib/surface/channel_init.c \
+src/core/lib/surface/channel_init.h \
+src/core/lib/surface/channel_ping.c \
+src/core/lib/surface/channel_stack_type.c \
+src/core/lib/surface/channel_stack_type.h \
+src/core/lib/surface/completion_queue.c \
+src/core/lib/surface/completion_queue.h \
+src/core/lib/surface/completion_queue_factory.c \
+src/core/lib/surface/completion_queue_factory.h \
+src/core/lib/surface/event_string.c \
+src/core/lib/surface/event_string.h \
+src/core/lib/surface/init.h \
+src/core/lib/surface/lame_client.c \
+src/core/lib/surface/lame_client.h \
+src/core/lib/surface/metadata_array.c \
+src/core/lib/surface/server.c \
+src/core/lib/surface/server.h \
+src/core/lib/surface/validate_metadata.c \
+src/core/lib/surface/validate_metadata.h \
+src/core/lib/surface/version.c \
+src/core/lib/transport/bdp_estimator.c \
+src/core/lib/transport/bdp_estimator.h \
+src/core/lib/transport/byte_stream.c \
+src/core/lib/transport/byte_stream.h \
+src/core/lib/transport/connectivity_state.c \
+src/core/lib/transport/connectivity_state.h \
+src/core/lib/transport/error_utils.c \
+src/core/lib/transport/error_utils.h \
+src/core/lib/transport/http2_errors.h \
+src/core/lib/transport/metadata.c \
+src/core/lib/transport/metadata.h \
+src/core/lib/transport/metadata_batch.c \
+src/core/lib/transport/metadata_batch.h \
+src/core/lib/transport/pid_controller.c \
+src/core/lib/transport/pid_controller.h \
+src/core/lib/transport/service_config.c \
+src/core/lib/transport/service_config.h \
+src/core/lib/transport/static_metadata.c \
+src/core/lib/transport/static_metadata.h \
+src/core/lib/transport/status_conversion.c \
+src/core/lib/transport/status_conversion.h \
+src/core/lib/transport/timeout_encoding.c \
+src/core/lib/transport/timeout_encoding.h \
+src/core/lib/transport/transport.c \
+src/core/lib/transport/transport.h \
+src/core/lib/transport/transport_impl.h \
+src/core/lib/transport/transport_op_string.c \
 src/cpp/README.md \
 src/cpp/client/channel_cc.cc \
 src/cpp/client/client_context.cc \
@@ -942,7 +1188,14 @@ src/cpp/util/byte_buffer_cc.cc \
 src/cpp/util/slice_cc.cc \
 src/cpp/util/status.cc \
 src/cpp/util/string_ref.cc \
-src/cpp/util/time_cc.cc
+src/cpp/util/time_cc.cc \
+third_party/nanopb/pb.h \
+third_party/nanopb/pb_common.c \
+third_party/nanopb/pb_common.h \
+third_party/nanopb/pb_decode.c \
+third_party/nanopb/pb_decode.h \
+third_party/nanopb/pb_encode.c \
+third_party/nanopb/pb_encode.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index 272bb4cebf361ce30864d7ac121394be3b7d6f54..e6ca9cb845cf1c0a9ad788506b0d9b40588600a8 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -822,7 +822,6 @@ include/grpc/impl/codegen/port_platform.h \
 include/grpc/impl/codegen/port_platform.h \
 include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 351638389e9b760e574f56efe1179dc9523a19f6..a9343499e76b348117767fd05bc6df32f8aa9aec 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -822,7 +822,6 @@ include/grpc/impl/codegen/port_platform.h \
 include/grpc/impl/codegen/port_platform.h \
 include/grpc/impl/codegen/propagation_bits.h \
 include/grpc/impl/codegen/slice.h \
-include/grpc/impl/codegen/slice.h \
 include/grpc/impl/codegen/status.h \
 include/grpc/impl/codegen/sync.h \
 include/grpc/impl/codegen/sync.h \
@@ -950,6 +949,11 @@ src/core/ext/load_reporting/load_reporting.h \
 src/core/ext/load_reporting/load_reporting_filter.c \
 src/core/ext/load_reporting/load_reporting_filter.h \
 src/core/ext/resolver/README.md \
+src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c \
+src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h \
+src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c \
+src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c \
+src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h \
 src/core/ext/resolver/dns/native/README.md \
 src/core/ext/resolver/dns/native/dns_resolver.c \
 src/core/ext/resolver/sockaddr/README.md \
@@ -1036,6 +1040,8 @@ src/core/lib/channel/http_client_filter.c \
 src/core/lib/channel/http_client_filter.h \
 src/core/lib/channel/http_server_filter.c \
 src/core/lib/channel/http_server_filter.h \
+src/core/lib/channel/max_age_filter.c \
+src/core/lib/channel/max_age_filter.h \
 src/core/lib/channel/message_size_filter.c \
 src/core/lib/channel/message_size_filter.h \
 src/core/lib/compression/algorithm_metadata.h \
@@ -1111,6 +1117,8 @@ src/core/lib/iomgr/sockaddr_posix.h \
 src/core/lib/iomgr/sockaddr_utils.c \
 src/core/lib/iomgr/sockaddr_utils.h \
 src/core/lib/iomgr/sockaddr_windows.h \
+src/core/lib/iomgr/socket_factory_posix.c \
+src/core/lib/iomgr/socket_factory_posix.h \
 src/core/lib/iomgr/socket_mutator.c \
 src/core/lib/iomgr/socket_mutator.h \
 src/core/lib/iomgr/socket_utils.h \
@@ -1218,10 +1226,10 @@ src/core/lib/security/transport/security_handshaker.h \
 src/core/lib/security/transport/server_auth_filter.c \
 src/core/lib/security/transport/tsi_error.c \
 src/core/lib/security/transport/tsi_error.h \
-src/core/lib/security/util/b64.c \
-src/core/lib/security/util/b64.h \
 src/core/lib/security/util/json_util.c \
 src/core/lib/security/util/json_util.h \
+src/core/lib/slice/b64.c \
+src/core/lib/slice/b64.h \
 src/core/lib/slice/percent_encoding.c \
 src/core/lib/slice/percent_encoding.h \
 src/core/lib/slice/slice.c \
@@ -1309,6 +1317,8 @@ src/core/lib/surface/channel_stack_type.c \
 src/core/lib/surface/channel_stack_type.h \
 src/core/lib/surface/completion_queue.c \
 src/core/lib/surface/completion_queue.h \
+src/core/lib/surface/completion_queue_factory.c \
+src/core/lib/surface/completion_queue_factory.h \
 src/core/lib/surface/event_string.c \
 src/core/lib/surface/event_string.h \
 src/core/lib/surface/init.c \
@@ -1350,16 +1360,16 @@ src/core/lib/transport/transport.c \
 src/core/lib/transport/transport.h \
 src/core/lib/transport/transport_impl.h \
 src/core/lib/transport/transport_op_string.c \
-src/core/lib/tsi/README.md \
-src/core/lib/tsi/fake_transport_security.c \
-src/core/lib/tsi/fake_transport_security.h \
-src/core/lib/tsi/ssl_transport_security.c \
-src/core/lib/tsi/ssl_transport_security.h \
-src/core/lib/tsi/ssl_types.h \
-src/core/lib/tsi/transport_security.c \
-src/core/lib/tsi/transport_security.h \
-src/core/lib/tsi/transport_security_interface.h \
 src/core/plugin_registry/grpc_plugin_registry.c \
+src/core/tsi/README.md \
+src/core/tsi/fake_transport_security.c \
+src/core/tsi/fake_transport_security.h \
+src/core/tsi/ssl_transport_security.c \
+src/core/tsi/ssl_transport_security.h \
+src/core/tsi/ssl_types.h \
+src/core/tsi/transport_security.c \
+src/core/tsi/transport_security.h \
+src/core/tsi/transport_security_interface.h \
 third_party/nanopb/pb.h \
 third_party/nanopb/pb_common.c \
 third_party/nanopb/pb_common.h \
diff --git a/tools/gce/linux_performance_worker_init.sh b/tools/gce/linux_performance_worker_init.sh
index 3380f3de3e5c9b8625dad0a60be5899260edd898..63fb0d81c544af8279f4b4f69c32ebc70d7f4245 100755
--- a/tools/gce/linux_performance_worker_init.sh
+++ b/tools/gce/linux_performance_worker_init.sh
@@ -166,3 +166,5 @@ echo 4096 | sudo tee /proc/sys/kernel/perf_event_mlock_kb
 # on benchmarks
 git clone -v https://github.com/brendangregg/FlameGraph ~/FlameGraph
 
+# Install scipy and numpy for benchmarking scripts
+sudo apt-get install python-scipy python-numpy
diff --git a/tools/grpcz/BUILD b/tools/grpcz/BUILD
new file mode 100644
index 0000000000000000000000000000000000000000..5e1faf7064f80b9e704f8ea0dab0d28fdd53ab18
--- /dev/null
+++ b/tools/grpcz/BUILD
@@ -0,0 +1,63 @@
+# Copyright 2017, 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.
+
+licenses(["notice"])  # 3-clause BSD
+
+package(default_visibility = ["//visibility:public"])
+
+load("//:bazel/grpc_build_system.bzl", "grpc_proto_library")
+
+grpc_proto_library (
+    name = "monitoring_proto",
+    srcs = [
+        "monitoring.proto",
+    ],
+    deps = [
+        ":census_proto",
+    ],
+    well_known_protos = "@submodule_protobuf//:well_known_protos",
+)
+
+grpc_proto_library (
+    name = "census_proto",
+    srcs = [
+        "census.proto",
+    ],
+    well_known_protos = "@submodule_protobuf//:well_known_protos",
+)
+
+cc_binary(
+    name = "grpcz_client",
+    srcs = ["grpcz_client.cc",],
+    deps = [
+        "//external:gflags",
+        "monitoring_proto",
+        "@mongoose_repo//:mongoose_lib",
+    ],
+)
diff --git a/tools/grpcz/census.proto b/tools/grpcz/census.proto
new file mode 100644
index 0000000000000000000000000000000000000000..d1ff69400b05231382af485949ff0b408e1a11f5
--- /dev/null
+++ b/tools/grpcz/census.proto
@@ -0,0 +1,318 @@
+// Copyright 2017, Google Inc.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//TODO(ericgribkoff) Depend on this directly from the instrumentation-proto
+//repository.
+
+syntax = "proto3";
+
+package google.instrumentation;
+
+option java_package = "com.google.instrumentation.stats.proto";
+option java_outer_classname = "CensusProto";
+
+// All the census protos.
+//
+// Nomenclature notes:
+//   * Capitalized names below (like View) are protos.
+//   * Protos which describe types are named with a Descriptor suffix (e.g.
+//     MesurementDescriptor).
+//
+// Census lets you define the type and description of the data being measured
+// (e.g. the latency of an RPC or the number of CPU cycles spent on an
+// operation using MeasurementDescriptor. As individual measurements (a double
+// value) for are recorded, they are aggregated together into an
+// Aggregation. There are two Aggregation types available: Distribution
+// (describes the distribution of all measurements, possibly with a histogram)
+// and IntervalStats (the count and mean of measurements across specified time
+// periods). An Aggregation is described by an AggregationDescriptor.
+//
+// You can define how your measurements (described by a MeasurementDescriptor)
+// are broken down by Tag values and which Aggregations to use through a
+// ViewDescriptor. The output (all measurements broken down by tag values into
+// specific Aggregations) is called a View.
+
+
+// The following two types are copied from
+// google/protobuf/{duration,timestamp}.proto. Ideally, we would be able to
+// import them, but this causes compilation issues on C-based systems
+// (e.g. https://koti.kapsi.fi/jpa/nanopb/), which cannot process the C++
+// headers generated from the standard protobuf distribution. See the relevant
+// proto files for full documentation of these types.
+
+message Duration {
+  // Signed seconds of the span of time. Must be from -315,576,000,000
+  // to +315,576,000,000 inclusive.
+  int64 seconds = 1;
+
+  // Signed fractions of a second at nanosecond resolution of the span
+  // of time. Durations less than one second are represented with a 0
+  // `seconds` field and a positive or negative `nanos` field. For durations
+  // of one second or more, a non-zero value for the `nanos` field must be
+  // of the same sign as the `seconds` field. Must be from -999,999,999
+  // to +999,999,999 inclusive.
+  int32 nanos = 2;
+}
+
+message Timestamp {
+  // Represents seconds of UTC time since Unix epoch
+  // 1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
+  // 9999-12-31T23:59:59Z inclusive.
+  int64 seconds = 1;
+
+  // Non-negative fractions of a second at nanosecond resolution. Negative
+  // second values with fractions must still have non-negative nanos values
+  // that count forward in time. Must be from 0 to 999,999,999
+  // inclusive.
+  int32 nanos = 2;
+}
+
+// MeasurementDescriptor describes a data point (measurement) type.
+message MeasurementDescriptor {
+  // A descriptive name, e.g. rpc_latency, cpu. Must be unique.
+  string name = 1;
+
+  // More detailed description of the resource, used in documentation.
+  string description = 2;
+
+  // Fundamental units of measurement supported by Census
+  // TODO(aveitch): expand this to include other S.I. units?
+  enum BasicUnit {
+    UNKNOWN = 0;    // Implementations should not use this
+    SCALAR = 1;     // Dimensionless
+    BITS = 2;       // A single bit
+    BYTES = 3;      // An 8-bit byte
+    SECONDS = 4;    // S.I. unit
+    CORES = 5;      // CPU core usage
+    MAX_UNITS = 6;  // Last defined value; implementations should only use
+                    // this for validation.
+  }
+
+  // MeasurementUnit lets you build compound units of the form
+  //   10^n * (A * B * ...) / (X * Y * ...),
+  // where the elements in the numerator and denominator are all BasicUnits.  A
+  // MeasurementUnit must have at least one BasicUnit in its numerator.
+  //
+  // To specify multiplication in the numerator or denominator, simply specify
+  // multiple numerator or denominator fields.  For example:
+  //
+  // - byte-seconds (i.e. bytes * seconds):
+  //     numerator: BYTES
+  //     numerator: SECS
+  //
+  // - events/sec^2 (i.e. rate of change of events/sec):
+  //     numerator: SCALAR
+  //     denominator: SECS
+  //     denominator: SECS
+  //
+  // To specify multiples (in power of 10) of units, specify a non-zero
+  // 'power10' value, for example:
+  //
+  // - MB/s (i.e. megabytes / s):
+  //     power10: 6
+  //     numerator: BYTES
+  //     denominator: SECS
+  //
+  // - nanoseconds
+  //     power10: -9
+  //     numerator: SECS
+  message MeasurementUnit {
+    int32 power10 = 1;
+    repeated BasicUnit numerators = 2;
+    repeated BasicUnit denominators = 3;
+  }
+
+  // The units used by this type of measurement.
+  MeasurementUnit unit = 3;
+}
+
+// An aggregation summarizes a series of individual measurements. There are
+// two types of aggregation (IntervalAggregation and DistributionAggregation),
+// unique types of each can be set using descriptors for each.
+
+// DistributionAggregation contains summary statistics for a population of
+// values and, optionally, a histogram representing the distribution of those
+// values across a specified set of histogram buckets, as defined in
+// DistributionAggregationDescriptor.bucket_bounds.
+//
+// The summary statistics are the count, mean, minimum, and the maximum of the
+// set of population of values.
+//
+// Although it is not forbidden, it is generally a bad idea to include
+// non-finite values (infinities or NaNs) in the population of values, as this
+// will render the `mean` field meaningless.
+message DistributionAggregation {
+  // The number of values in the population. Must be non-negative.
+  int64 count = 1;
+
+  // The arithmetic mean of the values in the population. If `count` is zero
+  // then this field must be zero.
+  double mean = 2;
+
+  // The sum of the values in the population.  If `count` is zero then this
+  // field must be zero.
+  double sum = 3;
+
+  // Describes a range of population values.
+  message Range {
+    // The minimum of the population values.
+    double min = 1;
+    // The maximum of the population values.
+    double max = 2;
+  }
+
+  // The range of the population values. If `count` is zero, this field will not
+  // be defined.
+  Range range = 4;
+
+  // A Distribution may optionally contain a histogram of the values in the
+  // population. The histogram is given in `bucket_count` as counts of values
+  // that fall into one of a sequence of non-overlapping buckets, as described
+  // by `DistributionAggregationDescriptor.bucket_boundaries`. The sum of the
+  // values in `bucket_counts` must equal the value in `count`.
+  //
+  // Bucket counts are given in order under the numbering scheme described
+  // above (the underflow bucket has number 0; the finite buckets, if any,
+  // have numbers 1 through N-2; the overflow bucket has number N-1).
+  //
+  // The size of `bucket_count` must be no greater than N as defined in
+  // `bucket_boundaries`.
+  //
+  // Any suffix of trailing zero bucket_count fields may be omitted.
+  repeated int64 bucket_counts = 5;
+
+  // Tags associated with this DistributionAggregation. These will be filled
+  // in based on the View specification.
+  repeated Tag tags = 6;
+}
+
+message DistributionAggregationDescriptor {
+  // A Distribution may optionally contain a histogram of the values in the
+  // population. The bucket boundaries for that histogram are described by
+  // `bucket_bounds`. This defines `size(bucket_bounds) + 1` (= N)
+  // buckets. The boundaries for bucket index i are:
+  //
+  // [-infinity, bucket_bounds[i]) for i == 0
+  // [bucket_bounds[i-1], bucket_bounds[i]) for 0 < i < N-2
+  // [bucket_bounds[i-1], +infinity) for i == N-1
+  //
+  // i.e. an underflow bucket (number 0), zero or more finite buckets (1
+  // through N - 2, and an overflow bucket (N - 1), with inclusive lower
+  // bounds and exclusive upper bounds.
+  //
+  // If `bucket_bounds` has no elements (zero size), then there is no
+  // histogram associated with the Distribution. If `bucket_bounds` has only
+  // one element, there are no finite buckets, and that single element is the
+  // common boundary of the overflow and underflow buckets. The values must
+  // be monotonically increasing.
+  repeated double bucket_bounds = 1;
+}
+
+// An IntervalAggreation records summary stats over various time
+// windows. These stats are approximate, with the degree of accuracy
+// controlled by setting the n_sub_intervals parameter in the
+// IntervalAggregationDescriptor.
+message IntervalAggregation {
+  // Summary statistic over a single time interval.
+  message Interval {
+    // The interval duration. Must be positive.
+    Duration interval_size = 1;
+    // Approximate number of measurements recorded in this interval.
+    double count = 2;
+    // The cumulative sum of measurements in this interval.
+    double sum = 3;
+  }
+
+  // Full set of intervals for this aggregation.
+  repeated Interval intervals = 1;
+
+  // Tags associated with this IntervalAggregation. These will be filled in
+  // based on the View specification.
+  repeated Tag tags = 2;
+}
+
+// An IntervalAggreationDescriptor specifies time intervals for an
+// IntervalAggregation.
+message IntervalAggregationDescriptor {
+  // Number of internal sub-intervals to use when collecting stats for each
+  // interval. The max error in interval measurements will be approximately
+  // 1/n_sub_intervals (although in practice, this will only be approached in
+  // the presence of very large and bursty workload changes), and underlying
+  // memory usage will be roughly proportional to the value of this
+  // field. Must be in the range [2, 20]. A value of 5 will be used if this is
+  // unspecified.
+  int32 n_sub_intervals = 1;
+
+  // The size of each interval, as a time duration. Must have at least one
+  // element.
+  repeated Duration interval_sizes = 2;
+}
+
+// A Tag: key-value pair.
+message Tag {
+  string key = 1;
+  string value = 2;
+}
+
+// A ViewDescriptor specifies an AggregationDescriptor and a set of tag
+// keys. Views instantiated from this descriptor will contain Aggregations
+// broken down by the unique set of matching tag values for each measurement.
+message ViewDescriptor {
+  // Name of view. Must be unique.
+  string name = 1;
+
+  // More detailed description, for documentation purposes.
+  string description = 2;
+
+  // Name of a MeasurementDescriptor to be used for this view.
+  string measurement_descriptor_name = 3;
+
+  // Aggregation type to associate with View.
+  oneof aggregation {
+    IntervalAggregationDescriptor interval_aggregation = 4;
+    DistributionAggregationDescriptor distribution_aggregation = 5;
+  }
+
+  // Tag keys to match with a given measurement. If no keys are specified,
+  // then all stats are recorded. Keys must be unique.
+  repeated string tag_keys = 6;
+}
+
+// DistributionView contains all aggregations for a view specified using a
+// DistributionAggregationDescriptor.
+message DistributionView {
+  // Aggregations - each will have a unique set of tag values for the tag_keys
+  // associated with the corresponding View.
+  repeated DistributionAggregation aggregations = 1;
+
+  // Start and end timestamps over which aggregations was accumulated.
+  Timestamp start = 2;
+  Timestamp end = 3;
+}
+
+// IntervalView contains all aggregations for a view specified using a
+// IntervalAggregationDescriptor.
+message IntervalView {
+  // Aggregations - each will have a unique set of tag values for the tag_keys
+  // associated with the corresponding View.
+  repeated IntervalAggregation aggregations = 1;
+}
+
+// A View contains the aggregations based on a ViewDescriptor.
+message View {
+  // ViewDescriptor name associated with this set of View.
+  string view_name = 1;
+
+  oneof view {
+    DistributionView distribution_view = 2;
+    IntervalView interval_view = 3;
+  }
+}
diff --git a/tools/grpcz/grpcz_client.cc b/tools/grpcz/grpcz_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..47eec8dfc38b1e8877c1b4b2d879a7dc86e64d49
--- /dev/null
+++ b/tools/grpcz/grpcz_client.cc
@@ -0,0 +1,181 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <string>
+
+#include <google/protobuf/util/json_util.h>
+#include <grpc++/grpc++.h>
+#include <grpc/support/log.h>
+
+#include "gflags/gflags.h"
+#include "mongoose.h"
+
+// TODO (makdharma): remove local copies of these protos
+#include "tools/grpcz/census.grpc.pb.h"
+#include "tools/grpcz/monitoring.grpc.pb.h"
+
+DEFINE_string(
+    grpcz_server, "127.0.0.1:8080",
+    "Unix domain socket path (e.g. unix://tmp/grpcz.sock) or IP address"
+    "(host:port) where grpcz server is running.");
+DEFINE_string(http_port, "8000",
+              "Port id for accessing the HTTP server that renders /grpcz page");
+DEFINE_bool(print_to_console, false,
+            "print the JSON retreived from grpcz server and quit");
+
+using grpc::Channel;
+using grpc::ClientContext;
+using grpc::Status;
+
+using ::grpc::instrumentation::v1alpha::CanonicalRpcStats;
+using ::grpc::instrumentation::v1alpha::Monitoring;
+
+static const std::string static_html_header =
+    "<!DOCTYPE html> <html> <head> <style> \
+table { border-collapse: collapse; width: 100%; } \
+table, td, th { border: 1px solid black; } \
+</style> </head> <body>\
+<div id='stats' data-stats='";
+
+static const std::string static_html_footer =
+    "' class='hidden'></div>\
+<h1>GRPCZ Statistics</h1> <div id='table'> </div> \
+<script> \
+  var canonical_stats = JSON.parse(\
+            document.getElementById('stats').getAttribute('data-stats')); \
+  var table = document.createElement('table'); \
+  if (canonical_stats['Error Message'] != undefined) { \
+     document.getElementById('table').innerHTML = canonical_stats['Error Message']; } \
+  else {\
+  for (var key in canonical_stats) { \
+    name = canonical_stats[key]['view']['viewName']; \
+    distribution = canonical_stats[key]['view']['distributionView']; \
+    interval = canonical_stats[key]['view']['intervalView']; \
+    value = (interval == undefined) ? \
+      JSON.stringify(distribution, null, ' ') : \
+      JSON.stringify(interval, null, ' '); \
+    var row = table.insertRow(-1); \
+    var col1 = row.insertCell(0); \
+    var col2 = row.insertCell(1); \
+    col1.innerHTML = name; \
+    col2.innerHTML = '<pre>' + value + '</pre>'; \
+  } \
+  document.getElementById('table').appendChild(table); \
+  }\
+</script> </body> </html>";
+
+class GrpczClient {
+ public:
+  GrpczClient(std::shared_ptr<Channel> channel)
+      : stub_(Monitoring::NewStub(channel)) {}
+
+  std::string GetStatsAsJson() {
+    const ::google::protobuf::Empty request;
+    CanonicalRpcStats reply;
+    ClientContext context;
+    Status status = stub_->GetCanonicalRpcStats(&context, request, &reply);
+
+    if (status.ok()) {
+      std::string json_str;
+      ::google::protobuf::util::MessageToJsonString(reply, &json_str);
+      return json_str;
+    } else {
+      static const std::string error_message_json =
+          "{\"Error Message\":\"" + status.error_message() + "\"}";
+      gpr_log(GPR_DEBUG, "%d: %s", status.error_code(),
+              status.error_message().c_str());
+      return error_message_json;
+    }
+  }
+
+ private:
+  std::unique_ptr<Monitoring::Stub> stub_;
+};
+
+static struct mg_serve_http_opts s_http_server_opts;
+std::unique_ptr<GrpczClient> g_grpcz_client;
+
+static void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  if (ev == MG_EV_HTTP_REQUEST) {
+    mg_serve_http(nc, (struct http_message *)p, s_http_server_opts);
+  }
+}
+
+static void grpcz_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  (void)ev;
+  (void)ev_data;
+  gpr_log(GPR_INFO, "fetching grpcz stats from %s", FLAGS_grpcz_server.c_str());
+  std::string json_str = g_grpcz_client->GetStatsAsJson();
+  std::string rendered_html =
+      static_html_header + json_str + static_html_footer;
+  mg_printf(nc, "HTTP/1.0 200 OK\r\n\r\n%s", rendered_html.c_str());
+  nc->flags |= MG_F_SEND_AND_CLOSE;
+}
+
+int main(int argc, char **argv) {
+  gflags::ParseCommandLineFlags(&argc, &argv, true);
+
+  // Create a client
+  g_grpcz_client.reset(new GrpczClient(grpc::CreateChannel(
+      FLAGS_grpcz_server, grpc::InsecureChannelCredentials())));
+  if (FLAGS_print_to_console) {
+    // using GPR_ERROR since this is the default verbosity. _DEBUG or _INFO
+    // won't print unless GRPC_VERBOSITY env var is set appropriately, which
+    // might confuse users of this utility.
+    gpr_log(GPR_ERROR, "%s\n", g_grpcz_client->GetStatsAsJson().c_str());
+    return 0;
+  }
+
+  // Set up a mongoose webserver handler
+  struct mg_mgr mgr;
+  mg_mgr_init(&mgr, NULL);
+  gpr_log(GPR_INFO, "Starting grpcz web server on port %s\n",
+          FLAGS_http_port.c_str());
+
+  struct mg_connection *nc = mg_bind(&mgr, FLAGS_http_port.c_str(), ev_handler);
+  if (nc == NULL) {
+    gpr_log(GPR_ERROR, "Failed to create listener on port %s\n",
+            FLAGS_http_port.c_str());
+    return -1;
+  }
+  mg_register_http_endpoint(nc, "/grpcz", grpcz_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  // Poll in a loop and serve /grpcz pages
+  for (;;) {
+    static const int k_sleep_millis = 100;
+    mg_mgr_poll(&mgr, k_sleep_millis);
+  }
+  mg_mgr_free(&mgr);
+  return 0;
+}
diff --git a/tools/grpcz/monitoring.proto b/tools/grpcz/monitoring.proto
new file mode 100644
index 0000000000000000000000000000000000000000..fefcd7d22f17138b4aafb50a31a9592c70c9ed4e
--- /dev/null
+++ b/tools/grpcz/monitoring.proto
@@ -0,0 +1,156 @@
+// Copyright 2017, 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 file defines an interface for exporting monitoring information
+// out of gRPC servers.
+syntax = "proto3";
+
+// TODO(ericgribkoff) Figure out how to manage the external Census proto
+// dependency.
+import "tools/grpcz/census.proto";
+import "google/protobuf/any.proto";
+import "google/protobuf/empty.proto";
+
+package grpc.instrumentation.v1alpha;
+
+option java_multiple_files = true;
+option java_package = "io.grpc.instrumentation.v1alpha";
+option java_outer_classname = "MonitoringProto";
+
+service Monitoring {
+  // Return canonical RPC stats
+  rpc GetCanonicalRpcStats(google.protobuf.Empty) returns (CanonicalRpcStats) {
+  }
+
+  // Query the server for specific stats
+  rpc GetStats(StatsRequest) returns (StatsResponse) {
+  }
+
+  // Request the server to stream back snapshots of the requested stats
+  rpc WatchStats(StatsRequest) returns (stream StatsResponse) {
+  }
+
+
+  // Return request traces.
+  rpc GetRequestTraces(TraceRequest) returns(TraceResponse) {
+  // TODO(aveitch): Please define the messages here
+  }
+
+  // Return application-defined groups of monitoring data.
+  // This is a low level facility to allow extension of the monitoring API to
+  // application-specific monitoring data. Frameworks may use this to define
+  // additional groups of monitoring data made available by servers.
+  rpc GetCustomMonitoringData(MonitoringDataGroup)
+    returns (CustomMonitoringData) {
+  }
+
+}
+
+// Canonical RPC stats exported by gRPC.
+message CanonicalRpcStats {
+  StatsResponse rpc_client_errors = 1;
+  StatsResponse rpc_client_completed_rpcs = 2;
+  StatsResponse rpc_client_started_rpcs = 3;
+  StatsResponse rpc_client_elapsed_time = 4;
+  StatsResponse rpc_client_server_elapsed_time = 5;
+  StatsResponse rpc_client_request_bytes = 6;
+  StatsResponse rpc_client_response_bytes = 7;
+  StatsResponse rpc_client_request_count = 8;
+  StatsResponse rpc_client_response_count = 9;
+  StatsResponse rpc_server_errors = 10;
+  StatsResponse rpc_server_completed_rpcs = 11;
+  StatsResponse rpc_server_server_elapsed_time = 12;
+  StatsResponse rpc_server_request_bytes = 13;
+  StatsResponse rpc_server_response_bytes = 14;
+  StatsResponse rpc_server_request_count = 15;
+  StatsResponse rpc_server_response_count = 16;
+  StatsResponse rpc_server_elapsed_time = 17;
+  //TODO(ericgribkoff) Add minute-hour interval stats.
+}
+
+// This message is sent when requesting a set of stats (Census Views) from
+// a client system, as part of the MonitoringService API's.
+message StatsRequest {
+  // An optional set of ViewDescriptor names. Only Views using these
+  // descriptors will be sent back in the response. If no names are provided,
+  // then all Views present in the client system will be included in every
+  // response. If measurement_names is also provided, then Views matching the
+  // intersection of the two are returned.
+  // TODO(aveitch): Consider making this a list of regexes or prefix matches in
+  // the future.
+  repeated string view_names = 1;
+
+  // An optional set of MeasurementDescriptor names. Only Views using these
+  // descriptors will be sent back in the response. If no names are provided,
+  // then all Views present in the client system will be included in every
+  // response. If view_names is also provided, then Views matching the
+  // intersection of the two are returned.
+  // TODO(aveitch): Consider making this a list of regexes or prefix matches in
+  // the future.
+  repeated string measurement_names = 2;
+
+  // By default, the MeasurementDescriptors and ViewDescriptors corresponding to
+  // the Views that are returned in a StatsResponse will be included in the
+  // first such response. Set this to true to have them not sent.
+  bool dont_include_descriptors_in_first_response = 3;
+}
+
+// This message contains all information relevant to a single View. It is the
+// return type for GetStats and WatchStats, and used in CanonicalRpcStats.
+message StatsResponse {
+  // A StatsResponse can optionally contain the MeasurementDescriptor and
+  // ViewDescriptor for the View. These will be sent in the first WatchStats
+  // response, or all GetStats and GetCanonicalRpcStats responses. These will
+  // not be set for {Get,Watch}Stats if
+  // dont_include_descriptors_in_first_response is set to true in the
+  // StatsRequest.
+  google.instrumentation.MeasurementDescriptor measurement_descriptor = 1;
+  google.instrumentation.ViewDescriptor view_descriptor = 2;
+
+  // The View data.
+  google.instrumentation.View view = 3;
+}
+
+message TraceRequest {
+  // TODO(aveitch): Complete definition of this type
+}
+
+message TraceResponse {
+  // TODO(aveitch): Complete definition of this type
+}
+
+message MonitoringDataGroup {
+  string name = 1;  // name of a group of monitoring data
+}
+
+// The wrapper for custom monitoring data.
+message CustomMonitoringData {
+  // can be any application specific monitoring data
+  google.protobuf.Any contents = 1;
+}
diff --git a/tools/http2_interop/http2interop_test.go b/tools/http2_interop/http2interop_test.go
index 305125f0c1127138c17d32226add4170b834c296..fb314da1964a099a4d9c855339439148d3e3db69 100644
--- a/tools/http2_interop/http2interop_test.go
+++ b/tools/http2_interop/http2interop_test.go
@@ -49,7 +49,7 @@ func InteropCtx(t *testing.T) *HTTP2InteropCtx {
 
 	if ctx.UseTestCa {
 		// It would be odd if useTestCa was true, but not useTls.  meh
-		certData, err := ioutil.ReadFile("src/core/lib/tsi/test_creds/ca.pem")
+		certData, err := ioutil.ReadFile("src/core/tsi/test_creds/ca.pem")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/tools/jenkins/run_line_count.sh b/tools/jenkins/run_line_count.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a2bde534130b88ad5687c44ec7165310649735b0
--- /dev/null
+++ b/tools/jenkins/run_line_count.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# Copyright 2017, 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 script is invoked by Jenkins and counts the number of lines in the
+# project.
+set -ex
+
+cd $(dirname $0)/../..
+tools/line_count/collect-now.sh
diff --git a/tools/jenkins/run_performance.sh b/tools/jenkins/run_performance.sh
index 99b920f6a095ba772a20eb2ac430170d25a26131..dee033a951aaf77bc563836c950ba4e4ab085a41 100755
--- a/tools/jenkins/run_performance.sh
+++ b/tools/jenkins/run_performance.sh
@@ -31,7 +31,10 @@
 # This script is invoked by Jenkins and runs performance smoke test.
 set -ex
 
+# List of benchmarks that provide good signal for analyzing performance changes in pull requests
+BENCHMARKS_TO_RUN="bm_closure bm_cq bm_call_create bm_error bm_chttp2_hpack bm_chttp2_transport bm_pollset bm_metadata"
+
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
-tools/run_tests/run_performance_tests.py -l c++ node ruby csharp python --netperf --category smoketest
+tools/profiling/microbenchmarks/bm_diff.py -d origin/$ghprbTargetBranch -b $BENCHMARKS_TO_RUN
diff --git a/tools/profiling/latency_profile/run_latency_profile.sh b/tools/jenkins/run_performance_profile_daily.sh
similarity index 86%
rename from tools/profiling/latency_profile/run_latency_profile.sh
rename to tools/jenkins/run_performance_profile_daily.sh
index 41423fc3c192d509cfb941c063c5beb411ee8be8..f239fad18866fa284ddd2ee1c664eeb381c92e42 100755
--- a/tools/profiling/latency_profile/run_latency_profile.sh
+++ b/tools/jenkins/run_performance_profile_daily.sh
@@ -30,9 +30,7 @@
 
 set -ex
 
-cd $(dirname $0)/../../..
-
-CPUS=`python -c 'import multiprocessing; print multiprocessing.cpu_count()'`
+cd $(dirname $0)/../..
 
 # try to use pypy for generating reports
 # each trace dumps 7-8gig of text to disk, and processing this into a report is
@@ -44,9 +42,4 @@ else
   PYTHON=python2.7
 fi
 
-make CONFIG=opt memory_profile_test memory_profile_client memory_profile_server
-bins/opt/memory_profile_test
-bq load microbenchmarks.memory memory_usage.csv
-
-$PYTHON tools/run_tests/run_microbenchmark.py --collect summary perf latency --bigquery_upload
-
+$PYTHON tools/run_tests/run_microbenchmark.py --collect summary perf latency
diff --git a/tools/jenkins/run_performance_profile_hourly.sh b/tools/jenkins/run_performance_profile_hourly.sh
new file mode 100755
index 0000000000000000000000000000000000000000..dfcc2bb1163c15fc4f3a0679cf5573b1741d2653
--- /dev/null
+++ b/tools/jenkins/run_performance_profile_hourly.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+# 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.
+
+set -ex
+
+cd $(dirname $0)/../..
+
+CPUS=`python -c 'import multiprocessing; print multiprocessing.cpu_count()'`
+
+make CONFIG=opt memory_profile_test memory_profile_client memory_profile_server -j $CPUS
+bins/opt/memory_profile_test
+bq load microbenchmarks.memory memory_usage.csv
+
+tools/run_tests/run_microbenchmark.py --collect summary --bigquery_upload
diff --git a/tools/line_count/collect-history.py b/tools/line_count/collect-history.py
new file mode 100755
index 0000000000000000000000000000000000000000..4c1bf73b1e15843e12176d31eb5a6f0925332d6d
--- /dev/null
+++ b/tools/line_count/collect-history.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# Copyright 2017, 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.
+
+import subprocess
+import datetime
+
+# this script is only of historical interest: it's the script that was used to
+# bootstrap the dataset
+
+def daterange(start, end):
+  for n in range(int((end - start).days)):
+    yield start + datetime.timedelta(n)
+
+start_date = datetime.date(2017, 3, 26)
+end_date = datetime.date(2017, 3, 29)
+
+for dt in daterange(start_date, end_date):
+  dmy = dt.strftime('%Y-%m-%d')
+  sha1 = subprocess.check_output(['git', 'rev-list', '-n', '1',
+                                  '--before=%s' % dmy,
+                                  'master']).strip()
+  subprocess.check_call(['git', 'checkout', sha1])
+  subprocess.check_call(['git', 'submodule', 'update'])
+  subprocess.check_call(['git', 'clean', '-f', '-x', '-d'])
+  subprocess.check_call(['cloc', '--vcs=git', '--by-file', '--yaml', '--out=../count/%s.yaml' % dmy, '.'])
+
diff --git a/tools/line_count/collect-now.sh b/tools/line_count/collect-now.sh
new file mode 100755
index 0000000000000000000000000000000000000000..44f4b4ed3107160ed4abf57b68f593dabd0494c9
--- /dev/null
+++ b/tools/line_count/collect-now.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+# Copyright 2017, 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.
+
+set -ex
+
+cloc --vcs=git --by-file --yaml --out=cloc.yaml .
+tools/line_count/yaml2csv.py -i cloc.yaml -d `date +%Y-%m-%d` -o cloc.csv
+bq load line_counts.grpc cloc.csv
+
diff --git a/tools/line_count/summarize-history.py b/tools/line_count/summarize-history.py
new file mode 100755
index 0000000000000000000000000000000000000000..cb6d570f66543f8d3e960493ec8decaf2f0c327d
--- /dev/null
+++ b/tools/line_count/summarize-history.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# Copyright 2017, 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.
+
+
+import subprocess
+import datetime
+
+# this script is only of historical interest: it's the script that was used to
+# bootstrap the dataset
+
+def daterange(start, end):
+  for n in range(int((end - start).days)):
+    yield start + datetime.timedelta(n)
+
+start_date = datetime.date(2017, 3, 26)
+end_date = datetime.date(2017, 3, 29)
+
+for dt in daterange(start_date, end_date):
+  dmy = dt.strftime('%Y-%m-%d')
+  print dmy
+  subprocess.check_call(['tools/line_count/yaml2csv.py', '-i', '../count/%s.yaml' % dmy, '-d', dmy, '-o', '../count/%s.csv' % dmy])
+
diff --git a/tools/line_count/yaml2csv.py b/tools/line_count/yaml2csv.py
new file mode 100755
index 0000000000000000000000000000000000000000..9bda09fd087c5087a0810416a851ff90b9f574c9
--- /dev/null
+++ b/tools/line_count/yaml2csv.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# Copyright 2017, 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.
+
+
+import yaml
+import argparse
+import datetime
+import csv
+
+argp = argparse.ArgumentParser(description='Convert cloc yaml to bigquery csv')
+argp.add_argument('-i', '--input', type=str)
+argp.add_argument('-d', '--date', type=str, default=datetime.date.today().strftime('%Y-%m-%d'))
+argp.add_argument('-o', '--output', type=str, default='out.csv')
+args = argp.parse_args()
+
+data = yaml.load(open(args.input).read())
+with open(args.output, 'w') as outf:
+  writer = csv.DictWriter(outf, ['date', 'name', 'language', 'code', 'comment', 'blank'])
+  for key, value in data.iteritems():
+    if key == 'header': continue
+    if key == 'SUM': continue
+    if key.startswith('third_party/'): continue
+    row = {'name': key, 'date': args.date}
+    row.update(value)
+    writer.writerow(row)
+
diff --git a/tools/profiling/microbenchmarks/bm_diff.py b/tools/profiling/microbenchmarks/bm_diff.py
index 14ea24f65e6676385ad3444a6df7e545deccf7d8..2337f2b282e718fb22eb2723dad697b88c44bfa2 100755
--- a/tools/profiling/microbenchmarks/bm_diff.py
+++ b/tools/profiling/microbenchmarks/bm_diff.py
@@ -33,6 +33,14 @@ import json
 import bm_json
 import tabulate
 import argparse
+from scipy import stats
+import subprocess
+import multiprocessing
+import collections
+import pipes
+import os
+sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), '..', '..', 'run_tests', 'python_utils'))
+import comment_on_pr
 
 def changed_ratio(n, o):
   if float(o) <= .0001: o = 0
@@ -41,78 +49,193 @@ def changed_ratio(n, o):
   if o == 0: return 100
   return (float(n)-float(o))/float(o)
 
+def median(ary):
+  ary = sorted(ary)
+  n = len(ary)
+  if n%2 == 0:
+    return (ary[n/2] + ary[n/2+1]) / 2.0
+  else:
+    return ary[n/2]
+
 def min_change(pct):
   return lambda n, o: abs(changed_ratio(n,o)) > pct/100.0
 
+nanos = {
+  'abs_diff': 5,
+  'pct_diff': 10,
+}
+counter = {
+  'abs_diff': 0.5,
+  'pct_diff': 10,
+}
+
 _INTERESTING = {
-  'cpu_time': min_change(10),
-  'real_time': min_change(10),
-  'locks_per_iteration': min_change(5),
-  'allocs_per_iteration': min_change(5),
-  'writes_per_iteration': min_change(5),
-  'atm_cas_per_iteration': min_change(1),
-  'atm_add_per_iteration': min_change(5),
+  'cpu_time': nanos,
+  'real_time': nanos,
+  'locks_per_iteration': counter,
+  'allocs_per_iteration': counter,
+  'writes_per_iteration': counter,
+  'atm_cas_per_iteration': counter,
+  'atm_add_per_iteration': counter,
 }
 
+
+_AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong',
+                              'bm_fullstack_streaming_ping_pong',
+                              'bm_fullstack_streaming_pump',
+                              'bm_closure',
+                              'bm_cq',
+                              'bm_call_create',
+                              'bm_error',
+                              'bm_chttp2_hpack',
+                              'bm_chttp2_transport',
+                              'bm_pollset',
+                              'bm_metadata',
+                              'bm_fullstack_trickle']
+
 argp = argparse.ArgumentParser(description='Perform diff on microbenchmarks')
 argp.add_argument('-t', '--track',
                   choices=sorted(_INTERESTING.keys()),
                   nargs='+',
                   default=sorted(_INTERESTING.keys()),
                   help='Which metrics to track')
-argp.add_argument('files', metavar='bm_file.json', type=str, nargs=4,
-                    help='files to diff. ')
+argp.add_argument('-b', '--benchmarks', nargs='+', choices=_AVAILABLE_BENCHMARK_TESTS, default=['bm_cq'])
+argp.add_argument('-d', '--diff_base', type=str)
+argp.add_argument('-r', '--repetitions', type=int, default=4)
+argp.add_argument('-p', '--p_threshold', type=float, default=0.01)
 args = argp.parse_args()
 
-with open(args.files[0]) as f:
-  js_new_ctr = json.loads(f.read())
-with open(args.files[1]) as f:
-  js_new_opt = json.loads(f.read())
-with open(args.files[2]) as f:
-  js_old_ctr = json.loads(f.read())
-with open(args.files[3]) as f:
-  js_old_opt = json.loads(f.read())
-
-new = {}
-old = {}
-
-for row in bm_json.expand_json(js_new_ctr, js_new_opt):
-  new[row['cpp_name']] = row
-for row in bm_json.expand_json(js_old_ctr, js_old_opt):
-  old[row['cpp_name']] = row
-
-changed = []
-for fld in args.track:
-  chk = _INTERESTING[fld]
-  for bm in new.keys():
-    if bm not in old: continue
-    n = new[bm]
-    o = old[bm]
-    if fld not in n or fld not in o: continue
-    if chk(n[fld], o[fld]):
-      changed.append((fld, chk))
-      break
-
-headers = ['Benchmark'] + [c[0] for c in changed] + ['Details']
+assert args.diff_base
+
+def avg(lst):
+  sum = 0.0
+  n = 0.0
+  for el in lst:
+    sum += el
+    n += 1
+  return sum / n
+
+def make_cmd(cfg):
+  return ['make'] + args.benchmarks + [
+      'CONFIG=%s' % cfg, '-j', '%d' % multiprocessing.cpu_count()]
+
+def build():
+  subprocess.check_call(['git', 'submodule', 'update'])
+  try:
+    subprocess.check_call(make_cmd('opt'))
+    subprocess.check_call(make_cmd('counters'))
+  except subprocess.CalledProcessError, e:
+    subprocess.check_call(['make', 'clean'])
+    subprocess.check_call(make_cmd('opt'))
+    subprocess.check_call(make_cmd('counters'))
+
+def collect1(bm, cfg, ver):
+  cmd = ['bins/%s/%s' % (cfg, bm),
+         '--benchmark_out=%s.%s.%s.json' % (bm, cfg, ver),
+         '--benchmark_out_format=json',
+         '--benchmark_repetitions=%d' % (args.repetitions)
+         ]
+  print cmd
+  subprocess.check_call(cmd)
+
+build()
+for bm in args.benchmarks:
+  collect1(bm, 'opt', 'new')
+  collect1(bm, 'counters', 'new')
+
+where_am_i = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
+subprocess.check_call(['git', 'checkout', args.diff_base])
+
+try:
+  build()
+  comparables = []
+  for bm in args.benchmarks:
+    try:
+      collect1(bm, 'opt', 'old')
+      collect1(bm, 'counters', 'old')
+      comparables.append(bm)
+    except subprocess.CalledProcessError, e:
+      pass
+finally:
+  subprocess.check_call(['git', 'checkout', where_am_i])
+  subprocess.check_call(['git', 'submodule', 'update'])
+
+
+class Benchmark:
+
+  def __init__(self):
+    self.samples = {
+      True: collections.defaultdict(list),
+      False: collections.defaultdict(list)
+    }
+    self.final = {}
+
+  def add_sample(self, data, new):
+    for f in args.track:
+      if f in data:
+        self.samples[new][f].append(float(data[f]))
+
+  def process(self):
+    for f in sorted(args.track):
+      new = self.samples[True][f]
+      old = self.samples[False][f]
+      if not new or not old: continue
+      p = stats.ttest_ind(new, old)[1]
+      new_mdn = median(new)
+      old_mdn = median(old)
+      delta = new_mdn - old_mdn
+      ratio = changed_ratio(new_mdn, old_mdn)
+      print '%s: new=%r old=%r new_mdn=%f old_mdn=%f delta=%f(%f:%f) ratio=%f(%f:%f) p=%f' % (
+      f, new, old, new_mdn, old_mdn, delta, abs(delta), _INTERESTING[f]['abs_diff'], ratio, abs(ratio), _INTERESTING[f]['pct_diff']/100.0, p
+      )
+      if p < args.p_threshold and abs(delta) > _INTERESTING[f]['abs_diff'] and abs(ratio) > _INTERESTING[f]['pct_diff']/100.0:
+        self.final[f] = delta
+    return self.final.keys()
+
+  def skip(self):
+    return not self.final
+
+  def row(self, flds):
+    return [self.final[f] if f in self.final else '' for f in flds]
+
+
+benchmarks = collections.defaultdict(Benchmark)
+
+for bm in comparables:
+  with open('%s.counters.new.json' % bm) as f:
+    js_new_ctr = json.loads(f.read())
+  with open('%s.opt.new.json' % bm) as f:
+    js_new_opt = json.loads(f.read())
+  with open('%s.counters.old.json' % bm) as f:
+    js_old_ctr = json.loads(f.read())
+  with open('%s.opt.old.json' % bm) as f:
+    js_old_opt = json.loads(f.read())
+
+  for row in bm_json.expand_json(js_new_ctr, js_new_opt):
+    print row
+    name = row['cpp_name']
+    if name.endswith('_mean') or name.endswith('_stddev'): continue
+    benchmarks[name].add_sample(row, True)
+  for row in bm_json.expand_json(js_old_ctr, js_old_opt):
+    print row
+    name = row['cpp_name']
+    if name.endswith('_mean') or name.endswith('_stddev'): continue
+    benchmarks[name].add_sample(row, False)
+
+really_interesting = set()
+for name, bm in benchmarks.items():
+  print name
+  really_interesting.update(bm.process())
+fields = [f for f in args.track if f in args.track]
+
+headers = ['Benchmark'] + fields
 rows = []
-for bm in sorted(new.keys()):
-  if bm not in old: continue
-  row = [bm]
-  any_changed = False
-  n = new[bm]
-  o = old[bm]
-  details = ''
-  for fld in args.track:
-    chk = _INTERESTING[fld]
-    if fld not in n or fld not in o: continue
-    if chk(n[fld], o[fld]):
-      row.append(changed_ratio(n[fld], o[fld]))
-      if details: details += ', '
-      details += '%s:%r-->%r' % (fld, float(o[fld]), float(n[fld]))
-      any_changed = True
-    else:
-      row.append('')
-  if any_changed:
-    row.append(details)
-    rows.append(row)
-print tabulate.tabulate(rows, headers=headers, floatfmt='+.2f')
+for name in sorted(benchmarks.keys()):
+  if benchmarks[name].skip(): continue
+  rows.append([name] + benchmarks[name].row(fields))
+if rows:
+  text = 'Performance differences noted:\n' + tabulate.tabulate(rows, headers=headers, floatfmt='+.2f')
+else:
+  text = 'No significant performance differences'
+comment_on_pr.comment_on_pr('```\n%s\n```' % text)
+print text
diff --git a/tools/profiling/microbenchmarks/bm_json.py b/tools/profiling/microbenchmarks/bm_json.py
index ca0af414a3b26a49d614255ce4a034d082727d8e..e885444f410a458e306d75119f4ffabb0cc10d24 100644
--- a/tools/profiling/microbenchmarks/bm_json.py
+++ b/tools/profiling/microbenchmarks/bm_json.py
@@ -113,6 +113,14 @@ _BM_SPECS = {
   'BM_TransportStreamRecv': {
     'tpl': [],
     'dyn': ['request_size'],
+  },
+  'BM_StreamingPingPongWithCoalescingApi': {
+    'tpl': ['fixture', 'client_mutator', 'server_mutator'],
+    'dyn': ['request_size', 'request_count', 'end_of_stream'],
+  },
+  'BM_Base16SomeStuff': {
+    'tpl': [],
+    'dyn': ['request_size'],
   }
 }
 
@@ -171,6 +179,7 @@ def parse_name(name):
 
 def expand_json(js, js2 = None):
   for bm in js['benchmarks']:
+    if bm['name'].endswith('_stddev') or bm['name'].endswith('_mean'): continue
     context = js['context']
     if 'label' in bm:
       labels_list = [s.split(':') for s in bm['label'].strip().split(' ') if len(s) and s[0] != '#']
@@ -189,8 +198,9 @@ def expand_json(js, js2 = None):
     row.update(labels)
     if js2:
       for bm2 in js2['benchmarks']:
-        if bm['name'] == bm2['name']:
+        if bm['name'] == bm2['name'] and 'already_used' not in bm2:
           row['cpu_time'] = bm2['cpu_time']
           row['real_time'] = bm2['real_time']
           row['iterations'] = bm2['iterations']
+          bm2['already_used'] = True
     yield row
diff --git a/tools/run_tests/artifacts/build_artifact_node.bat b/tools/run_tests/artifacts/build_artifact_node.bat
index 0a2bc4b9d7dbcd399163cd02f74fc8d196ce02d0..336a63b9f568d65096c41bcd2d7bf851a9ebb087 100644
--- a/tools/run_tests/artifacts/build_artifact_node.bat
+++ b/tools/run_tests/artifacts/build_artifact_node.bat
@@ -27,7 +27,7 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-set node_versions=1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 7.0.0
+set node_versions=4.0.0 5.0.0 6.0.0 7.0.0
 
 set electron_versions=1.0.0 1.1.0 1.2.0 1.3.0 1.4.0
 
diff --git a/tools/run_tests/artifacts/build_artifact_node.sh b/tools/run_tests/artifacts/build_artifact_node.sh
index 47b1f339fb8a9db026ff5d2a49cd6435ef744813..a33ab45ac211508ec5ca504af03507c2896045f9 100755
--- a/tools/run_tests/artifacts/build_artifact_node.sh
+++ b/tools/run_tests/artifacts/build_artifact_node.sh
@@ -42,7 +42,7 @@ mkdir -p artifacts
 
 npm update
 
-node_versions=( 1.1.0 2.0.0 3.0.0 4.0.0 5.0.0 6.0.0 7.0.0 )
+node_versions=( 4.0.0 5.0.0 6.0.0 7.0.0 )
 
 electron_versions=( 1.0.0 1.1.0 1.2.0 1.3.0 1.4.0 )
 
diff --git a/tools/run_tests/dockerize/build_interop_image.sh b/tools/run_tests/dockerize/build_interop_image.sh
index 48a216a124b194f40b180a8f6ee3c6552fae5f29..3385738f9c3a4353072560776666b8f28952191a 100755
--- a/tools/run_tests/dockerize/build_interop_image.sh
+++ b/tools/run_tests/dockerize/build_interop_image.sh
@@ -71,7 +71,13 @@ then
 fi
 
 # Use image name based on Dockerfile checksum
-BASE_IMAGE=${BASE_NAME}_base:`sha1sum tools/dockerfile/interoptest/$BASE_NAME/Dockerfile | cut -f1 -d\ `
+# on OSX use md5 instead of sha1sum
+if which sha1sum > /dev/null;
+then
+  BASE_IMAGE=${BASE_NAME}_base:`sha1sum tools/dockerfile/interoptest/$BASE_NAME/Dockerfile | cut -f1 -d\ `
+else
+  BASE_IMAGE=${BASE_NAME}_base:`md5 -r tools/dockerfile/interoptest/$BASE_NAME/Dockerfile | cut -f1 -d\ `
+fi
 
 # Make sure base docker image has been built. Should be instantaneous if so.
 docker build -t $BASE_IMAGE --force-rm=true tools/dockerfile/interoptest/$BASE_NAME || exit $?
diff --git a/tools/run_tests/generated/configs.json b/tools/run_tests/generated/configs.json
index 69e0f447743f6f1d539157f12bdc19d092be6885..93dd6fb3d434c1257b29a7183455ea446f4573a9 100644
--- a/tools/run_tests/generated/configs.json
+++ b/tools/run_tests/generated/configs.json
@@ -2,6 +2,26 @@
   {
     "config": "opt"
   }, 
+  {
+    "config": "asan-trace-cmp", 
+    "environ": {
+      "ASAN_OPTIONS": "detect_leaks=1:color=always", 
+      "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
+    }
+  }, 
+  {
+    "config": "dbg"
+  }, 
+  {
+    "config": "asan", 
+    "environ": {
+      "ASAN_OPTIONS": "detect_leaks=1:color=always", 
+      "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
+    }
+  }, 
+  {
+    "config": "msan"
+  }, 
   {
     "config": "basicprof"
   }, 
@@ -19,14 +39,16 @@
     }
   }, 
   {
-    "config": "asan-trace-cmp", 
+    "config": "ubsan", 
     "environ": {
-      "ASAN_OPTIONS": "detect_leaks=1:color=always", 
-      "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
+      "UBSAN_OPTIONS": "halt_on_error=1:print_stacktrace=1:suppressions=tools/ubsan_suppressions.txt"
     }
   }, 
   {
-    "config": "dbg"
+    "config": "tsan", 
+    "environ": {
+      "TSAN_OPTIONS": "suppressions=tools/tsan_suppressions.txt:halt_on_error=1:second_deadlock_stack=1"
+    }
   }, 
   {
     "config": "stapprof"
@@ -43,26 +65,7 @@
     ]
   }, 
   {
-    "config": "asan", 
-    "environ": {
-      "ASAN_OPTIONS": "detect_leaks=1:color=always", 
-      "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
-    }
-  }, 
-  {
-    "config": "tsan", 
-    "environ": {
-      "TSAN_OPTIONS": "suppressions=tools/tsan_suppressions.txt:halt_on_error=1:second_deadlock_stack=1"
-    }
-  }, 
-  {
-    "config": "ubsan", 
-    "environ": {
-      "UBSAN_OPTIONS": "halt_on_error=1:print_stacktrace=1:suppressions=tools/ubsan_suppressions.txt"
-    }
-  }, 
-  {
-    "config": "msan"
+    "config": "lto"
   }, 
   {
     "config": "mutrace"
diff --git a/tools/run_tests/generated/sources_and_headers.json b/tools/run_tests/generated/sources_and_headers.json
index 14ad133863a63bac27fe19d2c12ee927b899b0ba..be1d8768bd55cd6a4d9afa91a002b7000b5e7ff7 100644
--- a/tools/run_tests/generated/sources_and_headers.json
+++ b/tools/run_tests/generated/sources_and_headers.json
@@ -912,7 +912,7 @@
     "language": "c", 
     "name": "grpc_b64_test", 
     "src": [
-      "test/core/security/b64_test.c"
+      "test/core/slice/b64_test.c"
     ], 
     "third_party": false, 
     "type": "target"
@@ -3810,7 +3810,6 @@
       "test/cpp/interop/stress_interop_client.cc", 
       "test/cpp/interop/stress_interop_client.h", 
       "test/cpp/interop/stress_test.cc", 
-      "test/cpp/util/create_test_channel.cc", 
       "test/cpp/util/create_test_channel.h", 
       "test/cpp/util/metrics_server.cc", 
       "test/cpp/util/metrics_server.h"
@@ -5577,6 +5576,7 @@
       "grpc_lb_policy_pick_first", 
       "grpc_lb_policy_round_robin", 
       "grpc_load_reporting", 
+      "grpc_resolver_dns_ares", 
       "grpc_resolver_dns_native", 
       "grpc_resolver_sockaddr", 
       "grpc_secure", 
@@ -5678,6 +5678,7 @@
       "grpc_lb_policy_pick_first", 
       "grpc_lb_policy_round_robin", 
       "grpc_load_reporting", 
+      "grpc_resolver_dns_ares", 
       "grpc_resolver_dns_native", 
       "grpc_resolver_sockaddr", 
       "grpc_transport_chttp2_client_insecure", 
@@ -5737,6 +5738,7 @@
   }, 
   {
     "deps": [
+      "gpr", 
       "grpc", 
       "grpc++_base", 
       "grpc++_codegen_base", 
@@ -6188,6 +6190,7 @@
       "src/proto/grpc/testing/services.pb.h", 
       "src/proto/grpc/testing/stats.grpc.pb.h", 
       "src/proto/grpc/testing/stats.pb.h", 
+      "test/cpp/qps/benchmark_config.h", 
       "test/cpp/qps/client.h", 
       "test/cpp/qps/driver.h", 
       "test/cpp/qps/histogram.h", 
@@ -6197,13 +6200,14 @@
       "test/cpp/qps/report.h", 
       "test/cpp/qps/server.h", 
       "test/cpp/qps/stats.h", 
-      "test/cpp/qps/usage_timer.h", 
-      "test/cpp/util/benchmark_config.h"
+      "test/cpp/qps/usage_timer.h"
     ], 
     "is_filegroup": false, 
     "language": "c++", 
     "name": "qps", 
     "src": [
+      "test/cpp/qps/benchmark_config.cc", 
+      "test/cpp/qps/benchmark_config.h", 
       "test/cpp/qps/client.h", 
       "test/cpp/qps/client_async.cc", 
       "test/cpp/qps/client_sync.cc", 
@@ -6222,9 +6226,7 @@
       "test/cpp/qps/server_sync.cc", 
       "test/cpp/qps/stats.h", 
       "test/cpp/qps/usage_timer.cc", 
-      "test/cpp/qps/usage_timer.h", 
-      "test/cpp/util/benchmark_config.cc", 
-      "test/cpp/util/benchmark_config.h"
+      "test/cpp/qps/usage_timer.h"
     ], 
     "third_party": false, 
     "type": "lib"
@@ -7022,6 +7024,41 @@
     "third_party": true, 
     "type": "lib"
   }, 
+  {
+    "deps": [], 
+    "headers": [
+      "third_party/cares/ares_build.h", 
+      "third_party/cares/cares/ares.h", 
+      "third_party/cares/cares/ares_data.h", 
+      "third_party/cares/cares/ares_dns.h", 
+      "third_party/cares/cares/ares_getenv.h", 
+      "third_party/cares/cares/ares_getopt.h", 
+      "third_party/cares/cares/ares_inet_net_pton.h", 
+      "third_party/cares/cares/ares_iphlpapi.h", 
+      "third_party/cares/cares/ares_ipv6.h", 
+      "third_party/cares/cares/ares_library_init.h", 
+      "third_party/cares/cares/ares_llist.h", 
+      "third_party/cares/cares/ares_nowarn.h", 
+      "third_party/cares/cares/ares_platform.h", 
+      "third_party/cares/cares/ares_private.h", 
+      "third_party/cares/cares/ares_rules.h", 
+      "third_party/cares/cares/ares_setup.h", 
+      "third_party/cares/cares/ares_strcasecmp.h", 
+      "third_party/cares/cares/ares_strdup.h", 
+      "third_party/cares/cares/ares_version.h", 
+      "third_party/cares/cares/bitncmp.h", 
+      "third_party/cares/cares/config-win32.h", 
+      "third_party/cares/cares/setup_once.h", 
+      "third_party/cares/config_darwin/ares_config.h", 
+      "third_party/cares/config_linux/ares_config.h"
+    ], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "ares", 
+    "src": [], 
+    "third_party": false, 
+    "type": "lib"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -7108,6 +7145,8 @@
       "test/core/end2end/tests/large_metadata.c", 
       "test/core/end2end/tests/load_reporting_hook.c", 
       "test/core/end2end/tests/max_concurrent_streams.c", 
+      "test/core/end2end/tests/max_connection_age.c", 
+      "test/core/end2end/tests/max_connection_idle.c", 
       "test/core/end2end/tests/max_message_length.c", 
       "test/core/end2end/tests/negative_deadline.c", 
       "test/core/end2end/tests/network_status_change.c", 
@@ -7180,6 +7219,8 @@
       "test/core/end2end/tests/large_metadata.c", 
       "test/core/end2end/tests/load_reporting_hook.c", 
       "test/core/end2end/tests/max_concurrent_streams.c", 
+      "test/core/end2end/tests/max_connection_age.c", 
+      "test/core/end2end/tests/max_connection_idle.c", 
       "test/core/end2end/tests/max_message_length.c", 
       "test/core/end2end/tests/negative_deadline.c", 
       "test/core/end2end/tests/network_status_change.c", 
@@ -7421,7 +7462,6 @@
       "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/slice.h", 
       "include/grpc/impl/codegen/sync.h", 
       "include/grpc/impl/codegen/sync_generic.h", 
       "include/grpc/impl/codegen/sync_posix.h", 
@@ -7438,7 +7478,6 @@
       "include/grpc/impl/codegen/gpr_slice.h", 
       "include/grpc/impl/codegen/gpr_types.h", 
       "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/slice.h", 
       "include/grpc/impl/codegen/sync.h", 
       "include/grpc/impl/codegen/sync_generic.h", 
       "include/grpc/impl/codegen/sync_posix.h", 
@@ -7475,6 +7514,7 @@
       "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/max_age_filter.h", 
       "src/core/lib/channel/message_size_filter.h", 
       "src/core/lib/compression/algorithm_metadata.h", 
       "src/core/lib/compression/message_compress.h", 
@@ -7512,6 +7552,7 @@
       "src/core/lib/iomgr/sockaddr_posix.h", 
       "src/core/lib/iomgr/sockaddr_utils.h", 
       "src/core/lib/iomgr/sockaddr_windows.h", 
+      "src/core/lib/iomgr/socket_factory_posix.h", 
       "src/core/lib/iomgr/socket_mutator.h", 
       "src/core/lib/iomgr/socket_utils.h", 
       "src/core/lib/iomgr/socket_utils_posix.h", 
@@ -7540,6 +7581,7 @@
       "src/core/lib/json/json_common.h", 
       "src/core/lib/json/json_reader.h", 
       "src/core/lib/json/json_writer.h", 
+      "src/core/lib/slice/b64.h", 
       "src/core/lib/slice/percent_encoding.h", 
       "src/core/lib/slice/slice_hash_table.h", 
       "src/core/lib/slice/slice_internal.h", 
@@ -7551,6 +7593,7 @@
       "src/core/lib/surface/channel_init.h", 
       "src/core/lib/surface/channel_stack_type.h", 
       "src/core/lib/surface/completion_queue.h", 
+      "src/core/lib/surface/completion_queue_factory.h", 
       "src/core/lib/surface/event_string.h", 
       "src/core/lib/surface/init.h", 
       "src/core/lib/surface/lame_client.h", 
@@ -7608,6 +7651,8 @@
       "src/core/lib/channel/http_client_filter.h", 
       "src/core/lib/channel/http_server_filter.c", 
       "src/core/lib/channel/http_server_filter.h", 
+      "src/core/lib/channel/max_age_filter.c", 
+      "src/core/lib/channel/max_age_filter.h", 
       "src/core/lib/channel/message_size_filter.c", 
       "src/core/lib/channel/message_size_filter.h", 
       "src/core/lib/compression/algorithm_metadata.h", 
@@ -7681,6 +7726,8 @@
       "src/core/lib/iomgr/sockaddr_utils.c", 
       "src/core/lib/iomgr/sockaddr_utils.h", 
       "src/core/lib/iomgr/sockaddr_windows.h", 
+      "src/core/lib/iomgr/socket_factory_posix.c", 
+      "src/core/lib/iomgr/socket_factory_posix.h", 
       "src/core/lib/iomgr/socket_mutator.c", 
       "src/core/lib/iomgr/socket_mutator.h", 
       "src/core/lib/iomgr/socket_utils.h", 
@@ -7746,6 +7793,8 @@
       "src/core/lib/json/json_string.c", 
       "src/core/lib/json/json_writer.c", 
       "src/core/lib/json/json_writer.h", 
+      "src/core/lib/slice/b64.c", 
+      "src/core/lib/slice/b64.h", 
       "src/core/lib/slice/percent_encoding.c", 
       "src/core/lib/slice/percent_encoding.h", 
       "src/core/lib/slice/slice.c", 
@@ -7775,6 +7824,8 @@
       "src/core/lib/surface/channel_stack_type.h", 
       "src/core/lib/surface/completion_queue.c", 
       "src/core/lib/surface/completion_queue.h", 
+      "src/core/lib/surface/completion_queue_factory.c", 
+      "src/core/lib/surface/completion_queue_factory.h", 
       "src/core/lib/surface/event_string.c", 
       "src/core/lib/surface/event_string.h", 
       "src/core/lib/surface/init.h", 
@@ -7899,6 +7950,7 @@
       "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/slice.h", 
       "include/grpc/impl/codegen/status.h"
     ], 
     "is_filegroup": true, 
@@ -7911,6 +7963,7 @@
       "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/slice.h", 
       "include/grpc/impl/codegen/status.h"
     ], 
     "third_party": false, 
@@ -7950,6 +8003,7 @@
       "gpr", 
       "grpc_base", 
       "grpc_client_channel", 
+      "grpc_secure", 
       "nanopb"
     ], 
     "headers": [
@@ -8027,6 +8081,29 @@
     "third_party": false, 
     "type": "filegroup"
   }, 
+  {
+    "deps": [
+      "gpr", 
+      "grpc_base", 
+      "grpc_client_channel"
+    ], 
+    "headers": [
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h", 
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h"
+    ], 
+    "is_filegroup": true, 
+    "language": "c", 
+    "name": "grpc_resolver_dns_ares", 
+    "src": [
+      "src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c", 
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver.h", 
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c", 
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c", 
+      "src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h"
+    ], 
+    "third_party": false, 
+    "type": "filegroup"
+  }, 
   {
     "deps": [
       "gpr", 
@@ -8086,7 +8163,6 @@
       "src/core/lib/security/transport/security_connector.h", 
       "src/core/lib/security/transport/security_handshaker.h", 
       "src/core/lib/security/transport/tsi_error.h", 
-      "src/core/lib/security/util/b64.h", 
       "src/core/lib/security/util/json_util.h"
     ], 
     "is_filegroup": true, 
@@ -8134,8 +8210,6 @@
       "src/core/lib/security/transport/server_auth_filter.c", 
       "src/core/lib/security/transport/tsi_error.c", 
       "src/core/lib/security/transport/tsi_error.h", 
-      "src/core/lib/security/util/b64.c", 
-      "src/core/lib/security/util/b64.h", 
       "src/core/lib/security/util/json_util.c", 
       "src/core/lib/security/util/json_util.h", 
       "src/core/lib/surface/init_secure.c"
@@ -8296,6 +8370,7 @@
     "deps": [
       "gpr", 
       "grpc_base", 
+      "grpc_client_channel", 
       "grpc_transport_chttp2"
     ], 
     "headers": [
@@ -8451,31 +8526,34 @@
       "gpr"
     ], 
     "headers": [
-      "src/core/lib/tsi/fake_transport_security.h", 
-      "src/core/lib/tsi/ssl_transport_security.h", 
-      "src/core/lib/tsi/ssl_types.h", 
-      "src/core/lib/tsi/transport_security.h", 
-      "src/core/lib/tsi/transport_security_interface.h"
+      "src/core/tsi/fake_transport_security.h", 
+      "src/core/tsi/ssl_transport_security.h", 
+      "src/core/tsi/ssl_types.h", 
+      "src/core/tsi/transport_security.h", 
+      "src/core/tsi/transport_security_interface.h"
     ], 
     "is_filegroup": true, 
     "language": "c", 
     "name": "tsi", 
     "src": [
-      "src/core/lib/tsi/fake_transport_security.c", 
-      "src/core/lib/tsi/fake_transport_security.h", 
-      "src/core/lib/tsi/ssl_transport_security.c", 
-      "src/core/lib/tsi/ssl_transport_security.h", 
-      "src/core/lib/tsi/ssl_types.h", 
-      "src/core/lib/tsi/transport_security.c", 
-      "src/core/lib/tsi/transport_security.h", 
-      "src/core/lib/tsi/transport_security_interface.h"
+      "src/core/tsi/fake_transport_security.c", 
+      "src/core/tsi/fake_transport_security.h", 
+      "src/core/tsi/ssl_transport_security.c", 
+      "src/core/tsi/ssl_transport_security.h", 
+      "src/core/tsi/ssl_types.h", 
+      "src/core/tsi/transport_security.c", 
+      "src/core/tsi/transport_security.h", 
+      "src/core/tsi/transport_security_interface.h"
     ], 
     "third_party": false, 
     "type": "filegroup"
   }, 
   {
     "deps": [
-      "grpc++_codegen_base"
+      "gpr", 
+      "grpc++_codegen_base", 
+      "grpc_base", 
+      "nanopb"
     ], 
     "headers": [
       "include/grpc++/alarm.h", 
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index 6202346fc2f2d4ca91df05b83f7f33620f61836e..7d2c51a7d44c9a33ceea9e58438872df62268ff2 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -6302,6 +6302,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -7454,6 +7502,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -8579,6 +8675,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -9637,6 +9779,29 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -10743,6 +10908,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -11785,6 +11998,44 @@
       "linux"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -12824,7 +13075,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "max_connection_age"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12847,7 +13098,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "max_connection_idle"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12857,7 +13108,9 @@
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_full+trace_test", 
@@ -12870,7 +13123,7 @@
   }, 
   {
     "args": [
-      "network_status_change"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12893,7 +13146,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12916,7 +13169,7 @@
   }, 
   {
     "args": [
-      "payload"
+      "network_status_change"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12939,7 +13192,7 @@
   }, 
   {
     "args": [
-      "ping"
+      "no_op"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12962,7 +13215,7 @@
   }, 
   {
     "args": [
-      "ping_pong_streaming"
+      "payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -12985,7 +13238,53 @@
   }, 
   {
     "args": [
-      "registered_call"
+      "ping"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "ping_pong_streaming"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "registered_call"
     ], 
     "ci_platforms": [
       "windows", 
@@ -13976,6 +14275,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -15151,6 +15498,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -16328,6 +16723,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -17408,6 +17851,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -18464,6 +18931,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -19522,7 +20013,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "max_connection_age"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19546,7 +20037,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19570,7 +20061,7 @@
   }, 
   {
     "args": [
-      "network_status_change"
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19594,7 +20085,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "network_status_change"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19618,7 +20109,7 @@
   }, 
   {
     "args": [
-      "payload"
+      "no_op"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19642,7 +20133,7 @@
   }, 
   {
     "args": [
-      "ping_pong_streaming"
+      "payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19666,7 +20157,7 @@
   }, 
   {
     "args": [
-      "registered_call"
+      "ping_pong_streaming"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19690,14 +20181,14 @@
   }, 
   {
     "args": [
-      "request_with_flags"
+      "registered_call"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -19714,14 +20205,14 @@
   }, 
   {
     "args": [
-      "request_with_payload"
+      "request_with_flags"
     ], 
     "ci_platforms": [
       "windows", 
       "linux", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [
       "uv"
@@ -19738,7 +20229,7 @@
   }, 
   {
     "args": [
-      "server_finishes_request"
+      "request_with_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19762,7 +20253,7 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_calls"
+      "server_finishes_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -19786,7 +20277,31 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_tags"
+      "shutdown_finishes_calls"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "shutdown_finishes_tags"
     ], 
     "ci_platforms": [
       "windows", 
@@ -20600,6 +21115,32 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -21743,6 +22284,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -22895,6 +23484,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -23952,6 +24589,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -25030,6 +25691,52 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -26161,7 +26868,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "max_connection_age"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26184,7 +26891,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "max_connection_idle"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26194,7 +26901,9 @@
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_census_nosec_test", 
@@ -26207,7 +26916,7 @@
   }, 
   {
     "args": [
-      "network_status_change"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26230,7 +26939,7 @@
   }, 
   {
     "args": [
-      "no_logging"
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26253,7 +26962,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "network_status_change"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26276,7 +26985,7 @@
   }, 
   {
     "args": [
-      "payload"
+      "no_logging"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26299,7 +27008,7 @@
   }, 
   {
     "args": [
-      "ping"
+      "no_op"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26322,7 +27031,7 @@
   }, 
   {
     "args": [
-      "ping_pong_streaming"
+      "payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26345,7 +27054,7 @@
   }, 
   {
     "args": [
-      "registered_call"
+      "ping"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26368,7 +27077,7 @@
   }, 
   {
     "args": [
-      "request_with_flags"
+      "ping_pong_streaming"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26376,7 +27085,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -26391,7 +27100,7 @@
   }, 
   {
     "args": [
-      "request_with_payload"
+      "registered_call"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26414,7 +27123,7 @@
   }, 
   {
     "args": [
-      "resource_quota_server"
+      "request_with_flags"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26422,7 +27131,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -26437,7 +27146,7 @@
   }, 
   {
     "args": [
-      "server_finishes_request"
+      "request_with_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26460,7 +27169,7 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_calls"
+      "resource_quota_server"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26483,7 +27192,7 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_tags"
+      "server_finishes_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26506,7 +27215,7 @@
   }, 
   {
     "args": [
-      "simple_cacheable_request"
+      "shutdown_finishes_calls"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26529,7 +27238,7 @@
   }, 
   {
     "args": [
-      "simple_delayed_request"
+      "shutdown_finishes_tags"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26552,7 +27261,7 @@
   }, 
   {
     "args": [
-      "simple_metadata"
+      "simple_cacheable_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26575,7 +27284,7 @@
   }, 
   {
     "args": [
-      "simple_request"
+      "simple_delayed_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26598,7 +27307,7 @@
   }, 
   {
     "args": [
-      "streaming_error_response"
+      "simple_metadata"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26621,7 +27330,7 @@
   }, 
   {
     "args": [
-      "trailing_metadata"
+      "simple_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -26644,7 +27353,53 @@
   }, 
   {
     "args": [
-      "write_buffering"
+      "streaming_error_response"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "trailing_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "write_buffering"
     ], 
     "ci_platforms": [
       "windows", 
@@ -27288,6 +28043,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -28346,6 +29149,29 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -29429,6 +30255,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -30452,6 +31326,44 @@
       "linux"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -31468,7 +32380,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "max_connection_age"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31491,7 +32403,7 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "max_connection_idle"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31501,30 +32413,9 @@
     ], 
     "cpu_cost": 1.0, 
     "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "language": "c", 
-    "name": "h2_full+trace_nosec_test", 
-    "platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
-    ]
-  }, 
-  {
-    "args": [
-      "network_status_change"
-    ], 
-    "ci_platforms": [
-      "windows", 
-      "linux", 
-      "mac", 
-      "posix"
+    "exclude_iomgrs": [
+      "uv"
     ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
     "flaky": false, 
     "language": "c", 
     "name": "h2_full+trace_nosec_test", 
@@ -31537,7 +32428,7 @@
   }, 
   {
     "args": [
-      "no_op"
+      "max_message_length"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31560,7 +32451,7 @@
   }, 
   {
     "args": [
-      "payload"
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31583,7 +32474,7 @@
   }, 
   {
     "args": [
-      "ping"
+      "network_status_change"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31606,7 +32497,7 @@
   }, 
   {
     "args": [
-      "ping_pong_streaming"
+      "no_op"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31629,7 +32520,7 @@
   }, 
   {
     "args": [
-      "registered_call"
+      "payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31652,7 +32543,7 @@
   }, 
   {
     "args": [
-      "request_with_flags"
+      "ping"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31660,7 +32551,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 0.1, 
+    "cpu_cost": 1.0, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -31675,7 +32566,7 @@
   }, 
   {
     "args": [
-      "request_with_payload"
+      "ping_pong_streaming"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31698,7 +32589,7 @@
   }, 
   {
     "args": [
-      "resource_quota_server"
+      "registered_call"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31721,7 +32612,7 @@
   }, 
   {
     "args": [
-      "server_finishes_request"
+      "request_with_flags"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31729,7 +32620,7 @@
       "mac", 
       "posix"
     ], 
-    "cpu_cost": 1.0, 
+    "cpu_cost": 0.1, 
     "exclude_configs": [], 
     "exclude_iomgrs": [], 
     "flaky": false, 
@@ -31744,7 +32635,7 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_calls"
+      "request_with_payload"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31767,7 +32658,7 @@
   }, 
   {
     "args": [
-      "shutdown_finishes_tags"
+      "resource_quota_server"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31790,7 +32681,7 @@
   }, 
   {
     "args": [
-      "simple_cacheable_request"
+      "server_finishes_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31813,7 +32704,7 @@
   }, 
   {
     "args": [
-      "simple_delayed_request"
+      "shutdown_finishes_calls"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31836,7 +32727,7 @@
   }, 
   {
     "args": [
-      "simple_metadata"
+      "shutdown_finishes_tags"
     ], 
     "ci_platforms": [
       "windows", 
@@ -31859,7 +32750,76 @@
   }, 
   {
     "args": [
-      "simple_request"
+      "simple_cacheable_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_delayed_request"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_metadata"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "simple_request"
     ], 
     "ci_platforms": [
       "windows", 
@@ -32596,6 +33556,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -33748,6 +34756,54 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -34781,6 +35837,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -35813,6 +36893,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -36845,6 +37949,30 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -37899,6 +39027,32 @@
       "posix"
     ]
   }, 
+  {
+    "args": [
+      "max_connection_age"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
   {
     "args": [
       "max_message_length"
@@ -38996,7 +40150,7 @@
   }, 
   {
     "args": [
-      "max_message_length"
+      "max_connection_age"
     ], 
     "ci_platforms": [
       "linux", 
@@ -39019,7 +40173,53 @@
   }, 
   {
     "args": [
-      "negative_deadline"
+      "max_connection_idle"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "max_message_length"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
+      "negative_deadline"
     ], 
     "ci_platforms": [
       "linux", 
@@ -39573,6 +40773,56 @@
     "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_secure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_1channel_1MBmsg_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_1channel_1MBmsg_secure", 
+    "timeout_seconds": 360
+  }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_64KBmsg_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_64KBmsg_secure", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -39625,6 +40875,31 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 8388608, \"req_size\": 128}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_secure", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -39652,6 +40927,31 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure_1mb\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure_1mb", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -39902,6 +41202,56 @@
     "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_insecure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_1channel_1MBmsg_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_1channel_1MBmsg_insecure", 
+    "timeout_seconds": 360
+  }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_64KBmsg_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_64KBmsg_insecure", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -39954,6 +41304,31 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 8388608, \"req_size\": 128}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_insecure", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -39981,6 +41356,31 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure_1mb\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "tsan", 
+      "asan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_insecure_1mb", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40200,6 +41600,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40236,6 +41637,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40253,6 +41655,80 @@
     "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_1channel_1MBmsg_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_1channel_1MBmsg_secure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_64KBmsg_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_64KBmsg_secure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40272,6 +41748,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40308,6 +41785,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40327,6 +41805,43 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 8388608, \"req_size\": 128}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_secure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40346,6 +41861,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40365,6 +41881,43 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure_1mb\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure_1mb_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40384,6 +41937,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40420,6 +41974,81 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_qps_unconstrained_secure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 2, 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40434,13 +42063,13 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_qps_unconstrained_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40456,6 +42085,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40470,19 +42100,19 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_ping_pong_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": "capacity", 
+    "cpu_cost": 64, 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -40492,6 +42122,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40506,13 +42137,13 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40528,6 +42159,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40542,19 +42174,19 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_ping_pong_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 64, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -40564,6 +42196,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40578,13 +42211,13 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_qps_unconstrained_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_secure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40600,6 +42233,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40614,13 +42248,13 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_ping_pong_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40636,6 +42270,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40650,19 +42285,19 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_secure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_1channel_1MBmsg_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -40672,6 +42307,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40686,13 +42322,13 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_generic_async_streaming_ping_pong_insecure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_1channel_1MBmsg_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_64KBmsg_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"num_clients\": 0, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
@@ -40708,6 +42344,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40722,7 +42359,7 @@
     "platforms": [
       "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_insecure_low_thread_count", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_64KBmsg_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
   {
@@ -40744,6 +42381,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40780,6 +42418,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40799,6 +42438,43 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_unary_qps_unconstrained_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 8388608, \"req_size\": 128}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_insecure_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40818,6 +42494,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40837,6 +42514,43 @@
     "shortname": "json_run_localhost:cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_insecure_low_thread_count", 
     "timeout_seconds": 360
   }, 
+  {
+    "args": [
+      "--scenarios_json", 
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure_1mb\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"num_clients\": 1, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 1048576, \"req_size\": 1048576}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}}]}"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": "capacity", 
+    "defaults": "boringssl", 
+    "exclude_configs": [
+      "asan-noleaks", 
+      "asan-trace-cmp", 
+      "basicprof", 
+      "counters", 
+      "dbg", 
+      "gcov", 
+      "helgrind", 
+      "lto", 
+      "memcheck", 
+      "msan", 
+      "mutrace", 
+      "opt", 
+      "stapprof", 
+      "ubsan"
+    ], 
+    "excluded_poll_engines": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux"
+    ], 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_insecure_1mb_low_thread_count", 
+    "timeout_seconds": 360
+  }, 
   {
     "args": [
       "--scenarios_json", 
@@ -40856,6 +42570,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40892,6 +42607,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40928,6 +42644,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -40964,6 +42681,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -41000,6 +42718,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -41036,6 +42755,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -41072,6 +42792,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -41108,6 +42829,7 @@
       "dbg", 
       "gcov", 
       "helgrind", 
+      "lto", 
       "memcheck", 
       "msan", 
       "mutrace", 
@@ -82065,6 +83787,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5242554383597568"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5834320218423296"
@@ -82088,6 +83833,52 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-5965570207907840"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6499902139924480"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6520142139752448"
@@ -82111,6 +83902,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6699208922890240"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/clusterfuzz-testcase-6723650944237568"
@@ -83123,6 +84937,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59a56fa18034a104fb9f16cd58071b6ff93b8756"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-59b587d15c0bcdb985417cd7a133cecfcc232698"
@@ -94209,6 +96046,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/poc-c726ee220e980ed6ad17809fd9efe2844ee61555ac08e4f88afd8901cc2dd53a"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/timeout-0fa0559576ad2a45b06d0bfb84115963d7d48206"
@@ -147684,6 +149544,29 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/server_fuzzer_corpus/clusterfuzz-testcase-5417405008314368"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "server_fuzzer_one_entry", 
+    "platforms": [
+      "mac", 
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/server_fuzzer_corpus/crash-0f4b135c0242669ce425d2662168e9440f8a628d"
diff --git a/tools/run_tests/helper_scripts/post_tests_php.sh b/tools/run_tests/helper_scripts/post_tests_php.sh
index 23dc202322fdb4d2d8927b4893342fbeb9e04068..43b665e23ee207650ebb5405fcadf0bc2226ee02 100755
--- a/tools/run_tests/helper_scripts/post_tests_php.sh
+++ b/tools/run_tests/helper_scripts/post_tests_php.sh
@@ -43,4 +43,4 @@ genhtml $tmp2 --output-directory $out
 rm $tmp2
 rm $tmp1
 
-cp -rv $root/src/php/coverage $root/reports/php
+# todo(mattkwong): generate coverage report for php and copy to reports/php
diff --git a/tools/run_tests/helper_scripts/post_tests_python.sh b/tools/run_tests/helper_scripts/post_tests_python.sh
new file mode 100755
index 0000000000000000000000000000000000000000..4f5986b3a1a0ecf9a11dca6e15c846c40a303a55
--- /dev/null
+++ b/tools/run_tests/helper_scripts/post_tests_python.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+# Copyright 2017, 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.
+
+set -ex
+
+if [ "$CONFIG" != "gcov" ] ; then exit ; fi
+
+# change to directory of Python coverage files
+cd $(dirname $0)/../../../src/python/grpcio_tests/
+
+coverage combine .
+coverage html -i -d ./../../../reports/python
diff --git a/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh b/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh
new file mode 100755
index 0000000000000000000000000000000000000000..d7da6364d8f72ac8b43992d266ee7760ff97f896
--- /dev/null
+++ b/tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+set -ex
+
+# change to grpc repo root
+cd $(dirname $0)/../../..
+
+EXIT_CODE=0
+ruby src/ruby/end2end/sig_handling_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/channel_state_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/channel_closing_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/sig_int_during_channel_watch_driver.rb || EXIT_CODE=1
+exit $EXIT_CODE
diff --git a/tools/run_tests/performance/README.md b/tools/run_tests/performance/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..5fd64f6ee911f5791babb866deef9f9a32ded8e7
--- /dev/null
+++ b/tools/run_tests/performance/README.md
@@ -0,0 +1,106 @@
+# Overview of performance test suite, with steps for manual runs:
+
+For design of the tests, see
+http://www.grpc.io/docs/guides/benchmarking.html.
+
+## Pre-reqs for running these manually:
+In general the benchmark workers and driver build scripts expect
+[linux_performance_worker_init.sh](../../gce/linux_performance_worker_init.sh) to have been ran already.
+
+### To run benchmarks locally:
+* From the grpc repo root, start the
+[run_performance_tests.py](../run_performance_tests.py) runner script.
+
+### On remote machines, to start the driver and workers manually:
+The [run_performance_test.py](../run_performance_tests.py) top-level runner script can also
+be used with remote machines, but for e.g., profiling the server,
+it might be useful to run workers manually.
+
+1. You'll need a "driver" and separate "worker" machines.
+For example, you might use one GCE "driver" machine and 3 other
+GCE "worker" machines that are in the same zone.
+
+2. Connect to each worker machine and start up a benchmark worker with a "driver_port".
+  * For example, to start the grpc-go benchmark worker:
+  [grpc-go worker main.go](https://github.com/grpc/grpc-go/blob/master/benchmark/worker/main.go) --driver_port <driver_port>
+
+#### Comands to start workers in different languages:
+ * Note that these commands are what the top-level
+   [run_performance_test.py](../run_performance_tests.py) script uses to
+   build and run different workers through the
+   [build_performance.sh](./build_performance.sh) script and "run worker"
+   scripts (such as the [run_worker_java.sh](./run_worker_java.sh)).
+
+##### Running benchmark workers for C-core wrapped languages (C++, Python, C#, Node, Ruby):
+   * These are more simple since they all live in the main grpc repo.
+
+```
+$ cd <grpc_repo_root>
+$ tools/run_tests/performance/build_performance.sh
+$ tools/run_tests/performance/run_worker_<language>.sh
+```
+
+   * Note that there is one "run_worker" script per language, e.g.,
+     [run_worker_csharp.sh](./run_worker_csharp.sh) for c#.
+
+##### Running benchmark workers for gRPC-Java:
+   * You'll need the [grpc-java](https://github.com/grpc/grpc-java) repo.
+
+```
+$ cd <grpc-java-repo>
+$ ./gradlew -PskipCodegen=true :grpc-benchmarks:installDist
+$ benchmarks/build/install/grpc-benchmarks/bin/benchmark_worker --driver_port <driver_port>
+```
+
+##### Running benchmark workers for gRPC-Go:
+   * You'll need the [grpc-go repo](https://github.com/grpc/grpc-go)
+
+```
+$ cd <grpc-go-repo>/benchmark/worker && go install
+$ # if profiling, it might be helpful to turn off inlining by building with "-gcflags=-l"
+$ $GOPATH/bin/worker --driver_port <driver_port>
+```
+
+#### Build the driver:
+* Connect to the driver machine (if using a remote driver) and from the grpc repo root:
+```
+$ tools/run_tests/performance/build_performance.sh
+```
+
+#### Run the driver:
+1. Get the 'scenario_json' relevant for the scenario to run. Note that "scenario
+  json" configs are generated from [scenario_config.py](./scenario_config.py).
+  The [driver](../../../test/cpp/qps/qps_json_driver.cc) takes a list of these configs as a json string of the form: `{scenario: <json_list_of_scenarios> }`
+  in its `--scenarios_json` command argument.
+  One quick way to get a valid json string to pass to the driver is by running
+  the [run_performance_tests.py](./run_performance_tests.py) locally and copying the logged scenario json command arg.
+
+2. From the grpc repo root:
+
+* Set `QPS_WORKERS` environment variable to a comma separated list of worker
+machines. Note that the driver will start the "benchmark server" on the first
+entry in the list, and the rest will be told to run as clients against the
+benchmark server.
+
+Example running and profiling of go benchmark server:
+```
+$ export QPS_WORKERS=<host1>:<10000>,<host2>,10000,<host3>:10000
+$ bins/opt/qps_json_driver --scenario_json='<scenario_json_scenario_config_string>'
+```
+
+### Example profiling commands
+
+While running the benchmark, a profiler can be attached to the server.
+
+Example to count syscalls in grpc-go server during a benchmark:
+* Connect to server machine and run:
+```
+$ netstat -tulpn | grep <driver_port> # to get pid of worker
+$ perf stat -p <worker_pid> -e syscalls:sys_enter_write # stop after test complete
+```
+
+Example memory profile of grpc-go server, with `go tools pprof`:
+* After a run is done on the server, see its alloc profile with:
+```
+$ go tool pprof --text --alloc_space http://localhost:<pprof_port>/debug/heap
+```
diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index 1d91b61ba45fe8bd749cb6bb8647b44d99640e18..af510fe04938015baf9dd97866838773b4fbbc22 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -214,6 +214,29 @@ class CXXLanguage:
           secure=secure,
           categories=smoketest_categories+[SCALABLE])
 
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_qps_1channel_1MBmsg_%s' % secstr,
+          rpc_type='STREAMING',
+          req_size=1024*1024,
+          resp_size=1024*1024,
+          client_type='ASYNC_CLIENT',
+          server_type='ASYNC_GENERIC_SERVER',
+          unconstrained_client='async', use_generic_payload=True,
+          secure=secure,
+          categories=smoketest_categories+[SCALABLE],
+          channels=1, outstanding=100)
+
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_qps_unconstrained_64KBmsg_%s' % secstr,
+          rpc_type='STREAMING',
+          req_size=64*1024,
+          resp_size=64*1024,
+          client_type='ASYNC_CLIENT',
+          server_type='ASYNC_GENERIC_SERVER',
+          unconstrained_client='async', use_generic_payload=True,
+          secure=secure,
+          categories=smoketest_categories+[SCALABLE])
+
       yield _ping_pong_scenario(
           'cpp_generic_async_streaming_qps_one_server_core_%s' % secstr,
           rpc_type='STREAMING',
@@ -234,6 +257,19 @@ class CXXLanguage:
           categories=smoketest_categories + [SCALABLE],
           excluded_poll_engines = ['poll-cv'])
 
+      yield _ping_pong_scenario(
+          'cpp_protobuf_async_client_unary_1channel_64wide_128Breq_8MBresp_%s' %
+          (secstr),
+          rpc_type='UNARY',
+          client_type='ASYNC_CLIENT',
+          server_type='ASYNC_SERVER',
+          channels=1,
+          outstanding=64,
+          req_size=128,
+          resp_size=8*1024*1024,
+          secure=secure,
+          categories=smoketest_categories + [SCALABLE])
+
       yield _ping_pong_scenario(
           'cpp_protobuf_async_client_sync_server_streaming_qps_unconstrained_%s' % secstr,
           rpc_type='STREAMING',
@@ -244,6 +280,13 @@ class CXXLanguage:
           categories=smoketest_categories+[SCALABLE],
           excluded_poll_engines = ['poll-cv'])
 
+      yield _ping_pong_scenario(
+        'cpp_protobuf_async_unary_ping_pong_%s_1mb' % secstr, rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        req_size=1024*1024, resp_size=1024*1024,
+        secure=secure,
+        categories=smoketest_categories)
+
       for rpc_type in ['unary', 'streaming']:
         for synchronicity in ['sync', 'async']:
           yield _ping_pong_scenario(
@@ -376,6 +419,12 @@ class CSharpLanguage:
         unconstrained_client='async', client_language='c++',
         categories=[SCALABLE])
 
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_unary_ping_pong_1mb', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        req_size=1024*1024, resp_size=1024*1024,
+        categories=[SMOKETEST])
+
 
   def __str__(self):
     return 'csharp'
@@ -413,9 +462,15 @@ class NodeLanguage:
 
     yield _ping_pong_scenario(
         'cpp_to_node_unary_ping_pong', rpc_type='UNARY',
-        client_type='ASYNC_CLIENT', server_type='async_server',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
         client_language='c++')
 
+    yield _ping_pong_scenario(
+        'node_protobuf_async_unary_ping_pong_1mb', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        req_size=1024*1024, resp_size=1024*1024,
+        categories=[SMOKETEST])
+
     # TODO(murgatroid99): fix bugs with this scenario and re-enable it
     # yield _ping_pong_scenario(
     #     'node_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
@@ -496,6 +551,12 @@ class PythonLanguage:
         client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
         server_language='c++', async_server_threads=1)
 
+    yield _ping_pong_scenario(
+        'python_protobuf_sync_unary_ping_pong_1mb', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='ASYNC_SERVER',
+        req_size=1024*1024, resp_size=1024*1024,
+        categories=[SMOKETEST])
+
   def __str__(self):
     return 'python'
 
@@ -542,6 +603,12 @@ class RubyLanguage:
         client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
         server_language='c++', async_server_threads=1)
 
+    yield _ping_pong_scenario(
+        'ruby_protobuf_async_unary_ping_pong_1mb', rpc_type='UNARY',
+        client_type='SYNC_CLIENT', server_type='SYNC_SERVER',
+        req_size=1024*1024, resp_size=1024*1024,
+        categories=[SMOKETEST])
+
   def __str__(self):
     return 'ruby'
 
diff --git a/tools/run_tests/python_utils/comment_on_pr.py b/tools/run_tests/python_utils/comment_on_pr.py
new file mode 100644
index 0000000000000000000000000000000000000000..9708d0ffb4982ad59ca118af060bda14806d2554
--- /dev/null
+++ b/tools/run_tests/python_utils/comment_on_pr.py
@@ -0,0 +1,49 @@
+# Copyright 2017, 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.
+
+import os
+import json
+import urllib2
+
+def comment_on_pr(text):
+  if 'JENKINS_OAUTH_TOKEN' not in os.environ:
+    print 'Missing JENKINS_OAUTH_TOKEN env var: not commenting'
+    return
+  if 'ghprbPullId' not in os.environ:
+    print 'Missing ghprbPullId env var: not commenting'
+    return
+  req = urllib2.Request(
+      url = 'https://api.github.com/repos/grpc/grpc/issues/%s/comments' %
+          os.environ['ghprbPullId'],
+      data = json.dumps({'body': text}),
+      headers = {
+        'Authorization': 'token %s' % os.environ['JENKINS_OAUTH_TOKEN'],
+        'Content-Type': 'application/json',
+      })
+  print urllib2.urlopen(req).read()
diff --git a/tools/run_tests/run_microbenchmark.py b/tools/run_tests/run_microbenchmark.py
index 6bedc54941a5766b3110a7b5c6f2f0d5c8a9fea8..17b156c78f9828625441757eda92801d5c72de74 100755
--- a/tools/run_tests/run_microbenchmark.py
+++ b/tools/run_tests/run_microbenchmark.py
@@ -38,6 +38,19 @@ import argparse
 import python_utils.jobset as jobset
 import python_utils.start_port_server as start_port_server
 
+_AVAILABLE_BENCHMARK_TESTS = ['bm_fullstack_unary_ping_pong',
+                              'bm_fullstack_streaming_ping_pong',
+                              'bm_fullstack_streaming_pump',
+                              'bm_closure',
+                              'bm_cq',
+                              'bm_call_create',
+                              'bm_error',
+                              'bm_chttp2_hpack',
+                              'bm_chttp2_transport',
+                              'bm_pollset',
+                              'bm_metadata',
+                              'bm_fullstack_trickle']
+
 flamegraph_dir = os.path.join(os.path.expanduser('~'), 'FlameGraph')
 
 os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
@@ -201,26 +214,11 @@ argp.add_argument('-c', '--collect',
                   default=sorted(collectors.keys()),
                   help='Which collectors should be run against each benchmark')
 argp.add_argument('-b', '--benchmarks',
-                  default=['bm_fullstack_unary_ping_pong',
-                           'bm_fullstack_streaming_ping_pong',
-                           'bm_fullstack_streaming_pump',
-                           'bm_closure',
-                           'bm_cq',
-                           'bm_call_create',
-                           'bm_error',
-                           'bm_chttp2_hpack',
-                           'bm_chttp2_transport',
-                           'bm_pollset',
-                           'bm_metadata',
-                           'bm_fullstack_trickle',
-                           ],
+                  choices=_AVAILABLE_BENCHMARK_TESTS,
+                  default=_AVAILABLE_BENCHMARK_TESTS,
                   nargs='+',
                   type=str,
                   help='Which microbenchmarks should be run')
-argp.add_argument('--diff_perf',
-                  default=None,
-                  type=str,
-                  help='Diff microbenchmarks against this git revision')
 argp.add_argument('--bigquery_upload',
                   default=False,
                   action='store_const',
@@ -236,35 +234,9 @@ try:
   for collect in args.collect:
     for bm_name in args.benchmarks:
       collectors[collect](bm_name, args)
-  if args.diff_perf:
-    if 'summary' not in args.collect:
-      for bm_name in args.benchmarks:
-        run_summary(bm_name, 'opt', bm_name)
-        run_summary(bm_name, 'counters', bm_name)
-    where_am_i = subprocess.check_output(['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
-    subprocess.check_call(['git', 'checkout', args.diff_perf])
-    comparables = []
-    subprocess.check_call(['make', 'clean'])
-    try:
-      for bm_name in args.benchmarks:
-        try:
-          run_summary(bm_name, 'opt', '%s.old' % bm_name)
-          run_summary(bm_name, 'counters', '%s.old' % bm_name)
-          comparables.append(bm_name)
-        except subprocess.CalledProcessError, e:
-          pass
-    finally:
-      subprocess.check_call(['git', 'checkout', where_am_i])
-    for bm_name in comparables:
-      diff = subprocess.check_output(['tools/profiling/microbenchmarks/bm_diff.py',
-                                      '%s.counters.json' % bm_name,
-                                      '%s.opt.json' % bm_name,
-                                      '%s.old.counters.json' % bm_name,
-                                      '%s.old.opt.json' % bm_name]).strip()
-      if diff:
-        heading('Performance diff: %s' % bm_name)
-        text(diff)
 finally:
+  if not os.path.exists('reports'):
+    os.makedirs('reports')
   index_html += "</body>\n</html>\n"
   with open('reports/index.html', 'w') as f:
     f.write(index_html)
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index cba91a9a6323bd4a14b2a10a65ed5abc867cb466..0b4f26ca4401576d17fc9df89507f8725df42abf 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -247,9 +247,12 @@ class CLanguage(object):
         polling_strategies = ['all']
       for polling_strategy in polling_strategies:
         env={'GRPC_DEFAULT_SSL_ROOTS_FILE_PATH':
-                 _ROOT + '/src/core/lib/tsi/test_creds/ca.pem',
+                 _ROOT + '/src/core/tsi/test_creds/ca.pem',
              'GRPC_POLL_STRATEGY': polling_strategy,
              'GRPC_VERBOSITY': 'DEBUG'}
+        resolver = os.environ.get('GRPC_DNS_RESOLVER', None);
+        if resolver:
+          env['GRPC_DNS_RESOLVER'] = resolver
         shortname_ext = '' if polling_strategy=='all' else ' GRPC_POLL_STRATEGY=%s' % polling_strategy
         timeout_scaling = 1
         if polling_strategy == 'poll-cv':
@@ -611,7 +614,10 @@ class PythonLanguage(object):
     return [config.build for config in self.pythons]
 
   def post_tests_steps(self):
-    return []
+    if self.config != 'gcov':
+      return []
+    else:
+      return [['tools/run_tests/helper_scripts/post_tests_python.sh']]
 
   def makefile_name(self):
     return 'Makefile'
@@ -693,9 +699,13 @@ class RubyLanguage(object):
     _check_compiler(self.args.compiler, ['default'])
 
   def test_specs(self):
-    return [self.config.job_spec(['tools/run_tests/helper_scripts/run_ruby.sh'],
-                                 timeout_seconds=10*60,
-                                 environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
+    tests = [self.config.job_spec(['tools/run_tests/helper_scripts/run_ruby.sh'],
+                                  timeout_seconds=10*60,
+                                  environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
+    tests.append(self.config.job_spec(['tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh'],
+                 timeout_seconds=10*60,
+                 environ=_FORCE_ENVIRON_FOR_WRAPPERS))
+    return tests
 
   def pre_build_steps(self):
     return [['tools/run_tests/helper_scripts/pre_build_ruby.sh']]
@@ -1263,7 +1273,9 @@ if any(language.make_options() for language in languages):
     print('languages with custom make options cannot be built simultaneously with other languages')
     sys.exit(1)
   else:
-    language_make_options = next(iter(languages)).make_options()
+    # Combining make options is not clean and just happens to work. It allows C/C++ and C# to build
+    # together, and is only used under gcov. All other configs should build languages individually.
+    language_make_options = list(set([make_option for lang in languages for make_option in lang.make_options()]))
 
 if args.use_docker:
   if not args.travis:
diff --git a/tools/run_tests/run_tests_matrix.py b/tools/run_tests/run_tests_matrix.py
index b9bf6e50373c10e12cb156734d4f2564a70cd13d..6c1d4bd15dd7938f6e2a84208be8d135c3feb5ad 100755
--- a/tools/run_tests/run_tests_matrix.py
+++ b/tools/run_tests/run_tests_matrix.py
@@ -55,7 +55,8 @@ _DEFAULT_INNER_JOBS = 2
 _REPORT_SUFFIX = 'sponge_log.xml'
 
 
-def _docker_jobspec(name, runtests_args=[], inner_jobs=_DEFAULT_INNER_JOBS):
+def _docker_jobspec(name, runtests_args=[], runtests_envs={},
+                    inner_jobs=_DEFAULT_INNER_JOBS):
   """Run a single instance of run_tests.py in a docker container"""
   test_job = jobset.JobSpec(
           cmdline=['python', 'tools/run_tests/run_tests.py',
@@ -64,16 +65,19 @@ def _docker_jobspec(name, runtests_args=[], inner_jobs=_DEFAULT_INNER_JOBS):
                    '-j', str(inner_jobs),
                    '-x', 'report_%s_%s' % (name, _REPORT_SUFFIX),
                    '--report_suite_name', '%s' % name] + runtests_args,
+          environ=runtests_envs,
           shortname='run_tests_%s' % name,
           timeout_seconds=_RUNTESTS_TIMEOUT)
   return test_job
 
 
-def _workspace_jobspec(name, runtests_args=[], workspace_name=None, inner_jobs=_DEFAULT_INNER_JOBS):
+def _workspace_jobspec(name, runtests_args=[], workspace_name=None,
+                       runtests_envs={}, inner_jobs=_DEFAULT_INNER_JOBS):
   """Run a single instance of run_tests.py in a separate workspace"""
   if not workspace_name:
     workspace_name = 'workspace_%s' % name
   env = {'WORKSPACE_NAME': workspace_name}
+  env.update(runtests_envs)
   test_job = jobset.JobSpec(
           cmdline=['bash',
                    'tools/run_tests/helper_scripts/run_tests_in_workspace.sh',
@@ -89,7 +93,7 @@ def _workspace_jobspec(name, runtests_args=[], workspace_name=None, inner_jobs=_
 
 def _generate_jobs(languages, configs, platforms, iomgr_platform = 'native',
                   arch=None, compiler=None,
-                  labels=[], extra_args=[],
+                  labels=[], extra_args=[], extra_envs={},
                   inner_jobs=_DEFAULT_INNER_JOBS):
   result = []
   for language in languages:
@@ -103,11 +107,16 @@ def _generate_jobs(languages, configs, platforms, iomgr_platform = 'native',
           name += '_%s_%s' % (arch, compiler)
           runtests_args += ['--arch', arch,
                             '--compiler', compiler]
+        for extra_env in extra_envs:
+          name += '_%s_%s' % (extra_env, extra_envs[extra_env])
+
         runtests_args += extra_args
         if platform == 'linux':
-          job = _docker_jobspec(name=name, runtests_args=runtests_args, inner_jobs=inner_jobs)
+          job = _docker_jobspec(name=name, runtests_args=runtests_args,
+                                runtests_envs=extra_envs, inner_jobs=inner_jobs)
         else:
-          job = _workspace_jobspec(name=name, runtests_args=runtests_args, inner_jobs=inner_jobs)
+          job = _workspace_jobspec(name=name, runtests_args=runtests_args,
+                                   runtests_envs=extra_envs, inner_jobs=inner_jobs)
 
         job.labels = [platform, config, language, iomgr_platform] + labels
         result.append(job)
@@ -212,6 +221,21 @@ def _create_portability_test_jobs(extra_args=[], inner_jobs=_DEFAULT_INNER_JOBS)
                                   extra_args=extra_args,
                                   inner_jobs=inner_jobs)
 
+  # C and C++ with the c-ares DNS resolver on Linux
+  test_jobs += _generate_jobs(languages=['c', 'c++'],
+                              configs=['dbg'], platforms=['linux'],
+                              labels=['portability'],
+                              extra_args=extra_args,
+                              extra_envs={'GRPC_DNS_RESOLVER': 'ares'})
+
+  # TODO(zyc): Turn on this test after adding c-ares support on windows.
+  # C with the c-ares DNS resolver on Windonws
+  # test_jobs += _generate_jobs(languages=['c'],
+  #                             configs=['dbg'], platforms=['windows'],
+  #                             labels=['portability'],
+  #                             extra_args=extra_args,
+  #                             extra_envs={'GRPC_DNS_RESOLVER': 'ares'})
+
   # cmake build for C and C++
   # TODO(jtattermusch): some of the tests are failing, so we force --build_only
   # to make sure it's buildable at least.
diff --git a/tools/run_tests/sanity/check_sources_and_headers.py b/tools/run_tests/sanity/check_sources_and_headers.py
index f2e0bfeb3d45dafa7abaffd4571063e999d1bff9..42892ea69dd9cbabc42deeadf4432f53adf1ced2 100755
--- a/tools/run_tests/sanity/check_sources_and_headers.py
+++ b/tools/run_tests/sanity/check_sources_and_headers.py
@@ -77,14 +77,14 @@ for target in js:
       for line in src:
         m = re_inc1.match(line)
         if m:
-          if not target_has_header(target, m.group(1)) and not target['is_filegroup']:
+          if not target_has_header(target, m.group(1)):
             print (
               'target %s (%s) does not name header %s as a dependency' % (
                 target['name'], fn, m.group(1)))
             errors += 1
         m = re_inc2.match(line)
         if m:
-          if not target_has_header(target, 'include/' + m.group(1)) and not target['is_filegroup']:
+          if not target_has_header(target, 'include/' + m.group(1)):
             print (
               'target %s (%s) does not name header %s as a dependency' % (
                 target['name'], fn, m.group(1)))
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index 3c5ba16b93b9dbb69cdd39e50954c588bb513613..38dfe277ae3f8e4c7909bfd7c659dae260a001f8 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -49,6 +49,7 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  593e917c176b5bc5aafa57bf9f6030d749d91cd5 third_party/protobuf (v3.1.0-alpha-1-326-g593e917)
  bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift (bcad917)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
+ 7691f773af79bf75a62d1863fd0f13ebf9dc51b1 third_party/cares/cares (1.12.0)
 EOF
 
 diff -u $submodules $want_submodules
diff --git a/vsprojects/grpc.sln b/vsprojects/grpc.sln
index 591d3b5edb244fd4c4676415d74bd2348ead6b43..fbb19c2de6e1d35495c84d6ddbf1ee412ffacc2b 100644
--- a/vsprojects/grpc.sln
+++ b/vsprojects/grpc.sln
@@ -3,6 +3,11 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2013
 VisualStudioVersion = 12.0.21005.1
 MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ares", "vcxproj\.\ares\ares.vcxproj", "{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}"
+	ProjectSection(myProperties) = preProject
+        	lib = "True"
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "gen_hpack_tables", "vcxproj\.\gen_hpack_tables\gen_hpack_tables.vcxproj", "{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}"
 	ProjectSection(myProperties) = preProject
         	lib = "False"
@@ -49,6 +54,7 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++", "vcxproj\.\grpc++\
 	EndProjectSection
 	ProjectSection(ProjectDependencies) = postProject
 		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "grpc++_unsecure", "vcxproj\.\grpc++_unsecure\grpc++_unsecure.vcxproj", "{6EE56155-DF7C-4F6E-BFC4-F6F776BEB211}"
@@ -160,6 +166,22 @@ Global
 		Release-DLL|x64 = Release-DLL|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug|Win32.ActiveCfg = Debug|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug|x64.ActiveCfg = Debug|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release|Win32.ActiveCfg = Release|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release|x64.ActiveCfg = Release|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug|Win32.Build.0 = Debug|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug|x64.Build.0 = Debug|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release|Win32.Build.0 = Release|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release|x64.Build.0 = Release|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Debug-DLL|x64.Build.0 = Debug|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release-DLL|Win32.Build.0 = Release|Win32
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release-DLL|x64.ActiveCfg = Release|x64
+		{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}.Release-DLL|x64.Build.0 = Release|x64
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Debug|Win32.ActiveCfg = Debug|Win32
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Debug|x64.ActiveCfg = Debug|x64
 		{FCDEA4C7-7F26-05DB-D08F-A08F499026E6}.Release|Win32.ActiveCfg = Release|Win32
diff --git a/vsprojects/vcxproj/ares/ares.vcxproj b/vsprojects/vcxproj/ares/ares.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..811f7c72c3e0461c085e361e9ddd82438c857cd3
--- /dev/null
+++ b/vsprojects/vcxproj/ares/ares.vcxproj
@@ -0,0 +1,284 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{1769D06D-F18C-B4C2-B019-31D7F83F3C9A}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)\..\vsprojects\global.props" />
+    <Import Project="$(SolutionDir)\..\vsprojects\winsock.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'">
+    <TargetName>ares</TargetName>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'">
+    <TargetName>ares</TargetName>
+  </PropertyGroup>
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat Condition="$(Jenkins)">None</DebugInformationFormat>
+      <MinimalRebuild Condition="$(Jenkins)">false</MinimalRebuild>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation Condition="!$(Jenkins)">true</GenerateDebugInformation>
+      <GenerateDebugInformation Condition="$(Jenkins)">false</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_data.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_dns.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_getenv.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_getopt.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_inet_net_pton.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_iphlpapi.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_ipv6.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_library_init.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_llist.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_nowarn.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_platform.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_private.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_rules.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_setup.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_strcasecmp.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_strdup.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_version.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\bitncmp.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\config-win32.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\setup_once.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\ares_build.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\config_linux\ares_config.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\config_darwin\ares_config.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__close_sockets.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__get_hostent.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__read_line.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__timeval.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_cancel.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_create_query.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_data.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_destroy.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_expand_name.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_expand_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_fds.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_free_hostent.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_free_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getenv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_gethostbyaddr.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_gethostbyname.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getnameinfo.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getopt.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getsock.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_init.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_library_init.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_llist.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_mkquery.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_nowarn.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_options.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_a_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_aaaa_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_mx_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_naptr_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_ns_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_ptr_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_soa_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_srv_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_txt_reply.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_platform.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_process.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_query.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_search.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_send.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strcasecmp.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strdup.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strerror.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_timeout.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_version.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_writev.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\bitncmp.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\inet_net_pton.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\inet_ntop.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\windows_port.c">
+    </ClCompile>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+  </Target>
+</Project>
+
diff --git a/vsprojects/vcxproj/ares/ares.vcxproj.filters b/vsprojects/vcxproj/ares/ares.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..282a404868b6488dfdaecc7327bc0ae3a1e9e080
--- /dev/null
+++ b/vsprojects/vcxproj/ares/ares.vcxproj.filters
@@ -0,0 +1,245 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__close_sockets.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__get_hostent.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__read_line.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares__timeval.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_cancel.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_create_query.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_data.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_destroy.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_expand_name.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_expand_string.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_fds.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_free_hostent.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_free_string.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getenv.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_gethostbyaddr.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_gethostbyname.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getnameinfo.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getopt.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_getsock.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_init.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_library_init.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_llist.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_mkquery.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_nowarn.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_options.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_a_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_aaaa_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_mx_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_naptr_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_ns_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_ptr_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_soa_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_srv_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_parse_txt_reply.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_platform.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_process.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_query.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_search.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_send.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strcasecmp.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strdup.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_strerror.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_timeout.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_version.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\ares_writev.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\bitncmp.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\inet_net_pton.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\inet_ntop.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\cares\cares\windows_port.c">
+      <Filter>third_party\cares\cares</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_data.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_dns.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_getenv.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_getopt.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_inet_net_pton.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_iphlpapi.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_ipv6.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_library_init.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_llist.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_nowarn.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_platform.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_private.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_rules.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_setup.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_strcasecmp.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_strdup.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\ares_version.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\bitncmp.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\config-win32.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\cares\setup_once.h">
+      <Filter>third_party\cares\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\ares_build.h">
+      <Filter>third_party\cares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\config_linux\ares_config.h">
+      <Filter>third_party\cares\config_linux</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\cares\config_darwin\ares_config.h">
+      <Filter>third_party\cares\config_darwin</Filter>
+    </ClInclude>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Filter Include="third_party">
+      <UniqueIdentifier>{6463a17d-379b-4a21-51a9-c729ed28c9c1}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\cares">
+      <UniqueIdentifier>{f5276ab6-c78a-eea3-7ce9-54d2081b3d6a}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\cares\cares">
+      <UniqueIdentifier>{390f10a8-7730-6295-681d-6fbd990ad488}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\cares\config_darwin">
+      <UniqueIdentifier>{02918eea-69d3-f65c-08aa-6c6c3dd50c7a}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\cares\config_linux">
+      <UniqueIdentifier>{8b1c2965-c2f3-d13b-2c35-9e2c298acda5}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
+
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj b/vsprojects/vcxproj/gpr/gpr.vcxproj
index 32dedee55d3047ca865c6762759dac46713c3d52..511ff06771edd0313a210f4835d6c61c66fe6761 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj
@@ -180,7 +180,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
index 94699c8ff8c6d9efba55aeb785a7ed153be1f4b7..a098a54ae48fc7b6e85498a41dcf683b15a05b4f 100644
--- a/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
+++ b/vsprojects/vcxproj/gpr/gpr.vcxproj.filters
@@ -240,9 +240,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
index c85454a6ddabcddc3b0113e757a47c9e7484a7d0..a2b3e564dad56af7bedead87db6826f60f89621f 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj
@@ -339,6 +339,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -347,11 +348,20 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\proto_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc++\impl\codegen\config_protobuf.h" />
   </ItemGroup>
@@ -367,6 +377,121 @@
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     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\thread_manager\thread_manager.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\context.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\trace.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\httpcli.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\error.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\error_internal.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client.h" />
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_generic.h" />
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     <ClCompile Include="$(SolutionDir)\..\src\cpp\client\insecure_credentials.cc">
@@ -451,6 +576,262 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\util\time_cc.cc">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\httpcli.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\parser.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\error.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\load_file.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\polling_entity.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resource_quota.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_common_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_linux.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_common.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_ifaddrs.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_noifaddrs.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\time_averaged_stats.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_generic.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_heap.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\udp_server.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix_noop.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_cv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_eventfd.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_nospecial.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_pipe.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_reader.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_buffer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_intern.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\alarm.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\byte_buffer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\byte_buffer_reader.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call_details.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call_log_batch.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_ping.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\metadata_array.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\server.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\version.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\connectivity_state.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\service_config.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport_op_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\codegen\codegen_init.cc">
     </ClCompile>
   </ItemGroup>
@@ -458,6 +839,9 @@
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc\grpc.vcxproj">
       <Project>{29D16885-7228-4C31-81ED-5F9187C7F2A9}</Project>
     </ProjectReference>
+    <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\gpr\gpr.vcxproj">
+      <Project>{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}</Project>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
index d800b297e9f8d68523ae350ddc8ba2ad7b9a03ed..57d4db24a190734eb356ff7938fc24fd9eaf7bde 100644
--- a/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++/grpc++.vcxproj.filters
@@ -124,6 +124,390 @@
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       <Filter>src\cpp\util</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+      <Filter>src\core\lib\channel</Filter>
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+      <Filter>src\core\lib\channel</Filter>
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+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\compression</Filter>
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+      <Filter>src\core\lib\compression</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\http</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\http</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_linux.c">
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_uv.c">
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+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_posix.c">
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_uv.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_posix.c">
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+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\udp_server.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_cv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_pipe.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_uv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_windows.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call_test_only.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\server.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\connectivity_state.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\http2_errors.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\service_config.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport_impl.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>
@@ -494,6 +1253,39 @@
     <Filter Include="src">
       <UniqueIdentifier>{328ff211-2886-406e-56f9-18ba1686f363}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core">
+      <UniqueIdentifier>{d02f1155-7e7e-3736-3c69-dc9146dc523d}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib">
+      <UniqueIdentifier>{80567a8f-622f-a3ce-c12d-aebb63984b07}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\channel">
+      <UniqueIdentifier>{e769265c-8abd-cd64-2cc2-a52da484fe7b}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\compression">
+      <UniqueIdentifier>{701b2d46-11c6-3640-b189-45287f00bee3}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\debug">
+      <UniqueIdentifier>{ada68fd5-8e51-98cb-71a7-baf7989d8ffa}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\http">
+      <UniqueIdentifier>{e770844e-61d4-555e-59be-81288e21a35f}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\iomgr">
+      <UniqueIdentifier>{04dfa1c8-7ffe-4f06-4a7c-37441dc75764}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\json">
+      <UniqueIdentifier>{a5d5bddf-6f19-b655-a03a-f30ff5c253a5}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\slice">
+      <UniqueIdentifier>{afe126ba-52c9-1daa-d174-8ee8aade08c2}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\surface">
+      <UniqueIdentifier>{fb2276d7-5a11-f1d9-82c3-e7c7f1155523}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\transport">
+      <UniqueIdentifier>{4bd7971a-68f7-0d5a-f502-6dea3099caaa}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\cpp">
       <UniqueIdentifier>{2420a905-e4f1-a5aa-a364-6a112878a39e}</UniqueIdentifier>
     </Filter>
@@ -518,6 +1310,12 @@
     <Filter Include="src\cpp\util">
       <UniqueIdentifier>{f842537a-2bf1-1ec3-b495-7d62c64a1c06}</UniqueIdentifier>
     </Filter>
+    <Filter Include="third_party">
+      <UniqueIdentifier>{0cfc99f5-c633-356e-6810-754c93b15658}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\nanopb">
+      <UniqueIdentifier>{abc9bbec-57f7-141f-8616-e2d3aa8b2e6d}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
 </Project>
 
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
index 13d80ec4dad1e28b08aa0cd0277dd45583afb629..c060f98b34a2def306c2c6c4fa283cedb82c6795 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj
@@ -183,6 +183,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -191,7 +192,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
index 7981feb4de9b7400865770ddc07c25eff7189219..0623e421b217967681cbc29f6d616142cf052e98 100644
--- a/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_test_util/grpc++_test_util.vcxproj.filters
@@ -144,6 +144,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -168,9 +171,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
index 45c0ecd35d03b98ece051598d4164029ec6a5e86..f0774aa8a72a0d95f55fe1b5d564eeee6ec79749 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj
@@ -339,6 +339,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -347,11 +348,20 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\compression.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_security_constants.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\load_reporting.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\slice_buffer.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\status.h" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="$(SolutionDir)\..\src\cpp\client\create_channel_internal.h" />
@@ -361,6 +371,121 @@
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\health\health.pb.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\server\thread_pool_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\cpp\thread_manager\thread_manager.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\context.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\debug\trace.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\format_request.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\httpcli.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\http\parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\error.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\error_internal.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_internal.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\load_file.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\polling_entity.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_uv.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\port.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\resource_quota.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_uv.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\time_averaged_stats.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_generic.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_heap.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_uv.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\udp_server.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_cv.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_pipe.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_posix.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_uv.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call_test_only.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\server.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\connectivity_state.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\http2_errors.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\service_config.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport_impl.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h" />
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h" />
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   <ItemGroup>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\client\insecure_credentials.cc">
@@ -435,6 +560,262 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\util\time_cc.cc">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\httpcli.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\parser.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\error.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\load_file.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\polling_entity.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resource_quota.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_common_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_linux.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_common.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_ifaddrs.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix_noifaddrs.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\time_averaged_stats.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_generic.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_heap.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\udp_server.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix_noop.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_cv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_eventfd.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_nospecial.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_pipe.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_uv.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_windows.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_reader.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_buffer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_intern.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\alarm.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\byte_buffer.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\byte_buffer_reader.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call_details.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\call_log_batch.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_ping.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\metadata_array.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\server.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\version.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\connectivity_state.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\service_config.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\transport\transport_op_string.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_common.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\cpp\codegen\codegen_init.cc">
     </ClCompile>
   </ItemGroup>
diff --git a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
index 987d56d6a0945488f4a53f766b271013715fd30c..2dd3d8974f9d98fd5d01f4feb9ad0ef13ed26f97 100644
--- a/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc++_unsecure/grpc++_unsecure.vcxproj.filters
@@ -109,6 +109,390 @@
     <ClCompile Include="$(SolutionDir)\..\src\cpp\util\time_cc.cc">
       <Filter>src\cpp\util</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_args.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\channel_stack_builder.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\compress_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\connected_channel.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\deadline_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_factory.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
+      <Filter>src\core\lib\compression</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.c">
+      <Filter>src\core\lib\compression</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\debug\trace.c">
+      <Filter>src\core\lib\debug</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\format_request.c">
+      <Filter>src\core\lib\http</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\httpcli.c">
+      <Filter>src\core\lib\http</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\http\parser.c">
+      <Filter>src\core\lib\http</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\combiner.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_uv.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\error.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\exec_ctx.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\executor.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iocp_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\iomgr_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\load_file.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\network_status_tracker.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\polling_entity.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_uv.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_set_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_uv.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\pollset_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_uv.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resolve_address_windows.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\resource_quota.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
+      <Filter>src\core\lib\iomgr</Filter>
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+      <Filter>src\core\lib\transport</Filter>
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+      <Filter>src\core\lib\transport</Filter>
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+      <Filter>src\core\lib\transport</Filter>
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+      <Filter>src\core\lib\transport</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\include\grpc\byte_buffer_reader.h">
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+      <Filter>include\grpc</Filter>
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+    <ClInclude Include="$(SolutionDir)\..\include\grpc\grpc_posix.h">
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+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_client_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_server_utils_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_uv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\tcp_windows.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\time_averaged_stats.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_generic.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_heap.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\timer_uv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\udp_server.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\unix_sockets_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_cv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_pipe.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\wakeup_fd_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_uv.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\workqueue_windows.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h">
+      <Filter>src\core\lib\json</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_string_helpers.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\api_trace.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\call_test_only.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\server.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\validate_metadata.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\bdp_estimator.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\byte_stream.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\connectivity_state.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\error_utils.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\http2_errors.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\metadata_batch.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\pid_controller.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\service_config.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\static_metadata.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\status_conversion.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\timeout_encoding.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\transport\transport_impl.h">
+      <Filter>src\core\lib\transport</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h">
+      <Filter>third_party\nanopb</Filter>
+    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>
@@ -461,6 +1220,39 @@
     <Filter Include="src">
       <UniqueIdentifier>{cce6a85d-1111-3834-6825-31e170d93cff}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core">
+      <UniqueIdentifier>{595f2ea0-aafb-87e5-c938-db3ff0b0c69a}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib">
+      <UniqueIdentifier>{cf8fd5d8-ff54-331d-2d20-36d6cae0e14b}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\channel">
+      <UniqueIdentifier>{7e0225af-000b-4873-1c16-caffffbfd084}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\compression">
+      <UniqueIdentifier>{0bbdbf56-83ad-bb4b-c4e2-a6d38c342179}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\debug">
+      <UniqueIdentifier>{3875f7d7-ff11-c91d-0f98-810260cb554b}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\http">
+      <UniqueIdentifier>{4bd405b9-af65-f0a6-d67a-433f75900668}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\iomgr">
+      <UniqueIdentifier>{f4b146e4-8fba-83a6-1cc1-1262ebb785e8}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\json">
+      <UniqueIdentifier>{b83c8e70-e491-f6f9-a08c-85f632bb61d2}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\slice">
+      <UniqueIdentifier>{0d6d88e2-8549-5118-8b78-06e8283dadcb}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\surface">
+      <UniqueIdentifier>{1d59dcef-3358-d0ab-fa42-64da74065785}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="src\core\lib\transport">
+      <UniqueIdentifier>{ba865739-5dd9-6731-6772-48c25d45134f}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\cpp">
       <UniqueIdentifier>{1e5fd68c-bd87-e803-42b0-75a7fa19b91d}</UniqueIdentifier>
     </Filter>
@@ -485,6 +1277,12 @@
     <Filter Include="src\cpp\util">
       <UniqueIdentifier>{fb5d9a64-20ca-5119-ed38-04a3cf94923d}</UniqueIdentifier>
     </Filter>
+    <Filter Include="third_party">
+      <UniqueIdentifier>{e911fd76-1313-5d02-3983-cdd0bafe1c6a}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="third_party\nanopb">
+      <UniqueIdentifier>{1ff41e28-caf4-c4b9-0170-53d36c7dac29}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
 </Project>
 
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index afe72746e94836ea32afc303bac670886d6438a0..ada8f1a2289edd2514550f24eac75cad709e6bf7 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -283,6 +283,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -291,7 +292,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
@@ -312,6 +312,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
@@ -349,6 +350,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.h" />
@@ -377,6 +379,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
@@ -388,6 +391,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h" />
@@ -444,13 +448,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\security_connector.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\security_handshaker.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\b64.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_types.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security_interface.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\client_channel.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\client_channel_factory.h" />
@@ -479,6 +482,8 @@
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_common.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_decode.h" />
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\census\aggregation.h" />
@@ -523,6 +528,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
@@ -595,6 +602,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_common_posix.c">
@@ -669,6 +678,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice.c">
@@ -705,6 +716,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.c">
@@ -831,17 +844,15 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\util\b64.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\init_secure.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.c">
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.c">
     </ClCompile>
@@ -915,6 +926,12 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\round_robin\round_robin.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\dns_resolver_ares.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\native\dns_resolver.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\sockaddr\sockaddr_resolver.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index a7d32afbe1b9445eb705f2e5ca00bcdd615850df..02468451e989e55efad9aeb9acde16d8d07e0fc5 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -37,6 +37,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -145,6 +148,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -256,6 +262,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
       <Filter>src\core\lib\json</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+      <Filter>src\core\lib\slice</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
       <Filter>src\core\lib\slice</Filter>
     </ClCompile>
@@ -310,6 +319,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+      <Filter>src\core\lib\surface</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
@@ -499,23 +511,20 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.c">
       <Filter>src\core\lib\security\transport</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\util\b64.c">
-      <Filter>src\core\lib\security\util</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.c">
       <Filter>src\core\lib\security\util</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\init_secure.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.c">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClCompile Include="$(SolutionDir)\..\src\core\tsi\transport_security.c">
+      <Filter>src\core\tsi</Filter>
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.c">
       <Filter>src\core\ext\transport\chttp2\server</Filter>
@@ -625,6 +634,15 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\lb_policy\round_robin\round_robin.c">
       <Filter>src\core\ext\lb_policy\round_robin</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\dns_resolver_ares.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver_posix.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\native\dns_resolver.c">
       <Filter>src\core\ext\resolver\dns\native</Filter>
     </ClCompile>
@@ -732,6 +750,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -756,9 +777,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -815,6 +833,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -926,6 +947,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
@@ -1010,6 +1034,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h">
       <Filter>src\core\lib\json</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
@@ -1043,6 +1070,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
@@ -1211,26 +1241,23 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\transport\tsi_error.h">
       <Filter>src\core\lib\security\transport</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\b64.h">
-      <Filter>src\core\lib\security\util</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\security\util\json_util.h">
       <Filter>src\core\lib\security\util</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\fake_transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\fake_transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\ssl_types.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\ssl_types.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\tsi\transport_security_interface.h">
-      <Filter>src\core\lib\tsi</Filter>
+    <ClInclude Include="$(SolutionDir)\..\src\core\tsi\transport_security_interface.h">
+      <Filter>src\core\tsi</Filter>
     </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\transport\chttp2\server\chttp2_server.h">
       <Filter>src\core\ext\transport\chttp2\server</Filter>
@@ -1316,6 +1343,12 @@
     <ClInclude Include="$(SolutionDir)\..\third_party\nanopb\pb_encode.h">
       <Filter>third_party\nanopb</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver.h">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.h">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting.h">
       <Filter>src\core\ext\load_reporting</Filter>
     </ClInclude>
@@ -1436,6 +1469,9 @@
     <Filter Include="src\core\ext\resolver\dns">
       <UniqueIdentifier>{e8fe6413-ab8c-48d5-2c7b-aa79e3db4ab2}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core\ext\resolver\dns\c_ares">
+      <UniqueIdentifier>{2b72688f-79b8-05dd-2896-c7d5dec07dd6}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\core\ext\resolver\dns\native">
       <UniqueIdentifier>{94e34be0-29d2-1731-3c1e-617ec4986acb}</UniqueIdentifier>
     </Filter>
@@ -1541,12 +1577,12 @@
     <Filter Include="src\core\lib\transport">
       <UniqueIdentifier>{e9d0d3fc-c100-f3e6-89b8-649f241155bf}</UniqueIdentifier>
     </Filter>
-    <Filter Include="src\core\lib\tsi">
-      <UniqueIdentifier>{95ad2811-c8d0-7a42-2a73-baf03fcbf699}</UniqueIdentifier>
-    </Filter>
     <Filter Include="src\core\plugin_registry">
       <UniqueIdentifier>{02bec99b-ff39-88d7-9dea-e0ff9f4a2701}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core\tsi">
+      <UniqueIdentifier>{0b0f9ab1-efa4-7f03-e446-6fb9b5227e84}</UniqueIdentifier>
+    </Filter>
     <Filter Include="third_party">
       <UniqueIdentifier>{aaab30a4-2a15-732e-c141-3fbc0f0f5a7a}</UniqueIdentifier>
     </Filter>
diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
index 62969e31acfdd23a4f0cc7da0e9d7194cf4bc730..bc018dc801c63ffe8544c9a403e36de5d9270ff8 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj
@@ -163,6 +163,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -171,7 +172,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
@@ -207,6 +207,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
@@ -244,6 +245,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.h" />
@@ -272,6 +274,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
@@ -283,6 +286,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h" />
@@ -366,6 +370,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
@@ -438,6 +444,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_common_posix.c">
@@ -512,6 +520,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice.c">
@@ -548,6 +558,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.c">
diff --git a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
index 30088101f5f7d111b216ff1cca8c94c7d7314ad3..6a02b15a3a6c8388db7d02acdd0aa21c9fe004a0 100644
--- a/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_test_util/grpc_test_util.vcxproj.filters
@@ -94,6 +94,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -202,6 +205,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -313,6 +319,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
       <Filter>src\core\lib\json</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+      <Filter>src\core\lib\slice</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
       <Filter>src\core\lib\slice</Filter>
     </ClCompile>
@@ -367,6 +376,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+      <Filter>src\core\lib\surface</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
@@ -474,6 +486,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -498,9 +513,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -602,6 +614,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -713,6 +728,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
@@ -797,6 +815,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h">
       <Filter>src\core\lib\json</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
@@ -830,6 +851,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index 46069134a1e344cb09c0d97912444a87e9d14a52..83e76586ac28599be9d3892265669fcfe0d34f71 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -274,6 +274,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -282,7 +283,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
@@ -302,6 +302,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\handshaker_registry.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\message_compress.h" />
@@ -339,6 +340,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_posix.h" />
@@ -367,6 +369,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_common.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_reader.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_hash_table.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\slice_internal.h" />
@@ -378,6 +381,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\channel_stack_type.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\init.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.h" />
@@ -436,6 +440,8 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\subchannel.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\subchannel_index.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\uri_parser.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\lb_policy\grpclb\grpclb.h" />
@@ -490,6 +496,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\compression\compression.c">
@@ -562,6 +570,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_utils_common_posix.c">
@@ -636,6 +646,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\slice.c">
@@ -672,6 +684,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\lame_client.c">
@@ -804,6 +818,12 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\client_channel\uri_parser.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\dns_resolver_ares.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver_posix.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\native\dns_resolver.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\sockaddr\sockaddr_resolver.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index d658f4d574035a69c27f0c864eb3e9dbbd001771..5e2b7c2c318e874ded4096292dd8da798fff2d1d 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -40,6 +40,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.c">
+      <Filter>src\core\lib\channel</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
@@ -148,6 +151,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_utils.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.c">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.c">
       <Filter>src\core\lib\iomgr</Filter>
     </ClCompile>
@@ -259,6 +265,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\json\json_writer.c">
       <Filter>src\core\lib\json</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\b64.c">
+      <Filter>src\core\lib\slice</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.c">
       <Filter>src\core\lib\slice</Filter>
     </ClCompile>
@@ -313,6 +322,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.c">
+      <Filter>src\core\lib\surface</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\surface\event_string.c">
       <Filter>src\core\lib\surface</Filter>
     </ClCompile>
@@ -511,6 +523,15 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\client_channel\uri_parser.c">
       <Filter>src\core\ext\client_channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\dns_resolver_ares.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver_posix.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.c">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\ext\resolver\dns\native\dns_resolver.c">
       <Filter>src\core\ext\resolver\dns\native</Filter>
     </ClCompile>
@@ -645,6 +666,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -669,9 +693,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -725,6 +746,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\max_age_filter.h">
+      <Filter>src\core\lib\channel</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\message_size_filter.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
@@ -836,6 +860,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\sockaddr_windows.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_factory_posix.h">
+      <Filter>src\core\lib\iomgr</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\socket_mutator.h">
       <Filter>src\core\lib\iomgr</Filter>
     </ClInclude>
@@ -920,6 +947,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\json\json_writer.h">
       <Filter>src\core\lib\json</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\b64.h">
+      <Filter>src\core\lib\slice</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\slice\percent_encoding.h">
       <Filter>src\core\lib\slice</Filter>
     </ClInclude>
@@ -953,6 +983,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\completion_queue_factory.h">
+      <Filter>src\core\lib\surface</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\surface\event_string.h">
       <Filter>src\core\lib\surface</Filter>
     </ClInclude>
@@ -1127,6 +1160,12 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\client_channel\uri_parser.h">
       <Filter>src\core\ext\client_channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_ev_driver.h">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\ext\resolver\dns\c_ares\grpc_ares_wrapper.h">
+      <Filter>src\core\ext\resolver\dns\c_ares</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\ext\load_reporting\load_reporting.h">
       <Filter>src\core\ext\load_reporting</Filter>
     </ClInclude>
@@ -1271,6 +1310,9 @@
     <Filter Include="src\core\ext\resolver\dns">
       <UniqueIdentifier>{2e0a9b4f-6394-7c0e-6e5a-0f8b3ee29b41}</UniqueIdentifier>
     </Filter>
+    <Filter Include="src\core\ext\resolver\dns\c_ares">
+      <UniqueIdentifier>{932d8afd-e042-46d0-30c5-1c45386165d9}</UniqueIdentifier>
+    </Filter>
     <Filter Include="src\core\ext\resolver\dns\native">
       <UniqueIdentifier>{3d5398c8-928b-9096-8eb7-f8c40ee68c4d}</UniqueIdentifier>
     </Filter>
diff --git a/vsprojects/vcxproj/qps/qps.vcxproj b/vsprojects/vcxproj/qps/qps.vcxproj
index 2d7892683a85d911d42239a173451e2f10d4daa8..6e290f4557d72d55665019dbe734686ac6435211 100644
--- a/vsprojects/vcxproj/qps/qps.vcxproj
+++ b/vsprojects/vcxproj/qps/qps.vcxproj
@@ -147,6 +147,7 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\benchmark_config.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\client.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\driver.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\histogram.h" />
@@ -157,7 +158,6 @@
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\server.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\stats.h" />
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\usage_timer.h" />
-    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\benchmark_config.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\messages.pb.cc">
@@ -200,6 +200,8 @@
     </ClCompile>
     <ClInclude Include="$(SolutionDir)\..\src\proto\grpc\testing\services.grpc.pb.h">
     </ClInclude>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\benchmark_config.cc">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\client_async.cc">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\client_sync.cc">
@@ -218,8 +220,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\usage_timer.cc">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\benchmark_config.cc">
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="$(SolutionDir)\..\vsprojects\vcxproj\.\grpc_test_util\grpc_test_util.vcxproj">
diff --git a/vsprojects/vcxproj/qps/qps.vcxproj.filters b/vsprojects/vcxproj/qps/qps.vcxproj.filters
index f25be9af191a02a4d50aa86939acafa668cb45f0..a7d6c127e8ae57cd51b6dbada04d4205b393db64 100644
--- a/vsprojects/vcxproj/qps/qps.vcxproj.filters
+++ b/vsprojects/vcxproj/qps/qps.vcxproj.filters
@@ -16,6 +16,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\proto\grpc\testing\services.proto">
       <Filter>src\proto\grpc\testing</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\benchmark_config.cc">
+      <Filter>test\cpp\qps</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\client_async.cc">
       <Filter>test\cpp\qps</Filter>
     </ClCompile>
@@ -43,11 +46,11 @@
     <ClCompile Include="$(SolutionDir)\..\test\cpp\qps\usage_timer.cc">
       <Filter>test\cpp\qps</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\benchmark_config.cc">
-      <Filter>test\cpp\util</Filter>
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\benchmark_config.h">
+      <Filter>test\cpp\qps</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\client.h">
       <Filter>test\cpp\qps</Filter>
     </ClInclude>
@@ -78,9 +81,6 @@
     <ClInclude Include="$(SolutionDir)\..\test\cpp\qps\usage_timer.h">
       <Filter>test\cpp\qps</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\test\cpp\util\benchmark_config.h">
-      <Filter>test\cpp\util</Filter>
-    </ClInclude>
   </ItemGroup>
 
   <ItemGroup>
@@ -105,9 +105,6 @@
     <Filter Include="test\cpp\qps">
       <UniqueIdentifier>{b57fa0e4-f88d-fe46-8885-956fc582de3d}</UniqueIdentifier>
     </Filter>
-    <Filter Include="test\cpp\util">
-      <UniqueIdentifier>{9042d134-6d5a-a907-799e-01768a475055}</UniqueIdentifier>
-    </Filter>
   </ItemGroup>
 </Project>
 
diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
index 986217baba6eeb0a7deefcdf5515f43801b9cc0d..e3f081ba2abe37e68fd8b5853dd83de3d194a618 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj
@@ -196,6 +196,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -204,7 +205,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
index b48fe4fceeecf1a2216c2057aa67556025622d7c..09e7c70e74a973cceeecfd76cf171498f3c0bca3 100644
--- a/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_full/codegen_test_full.vcxproj.filters
@@ -129,6 +129,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -153,9 +156,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
index fd014fdc098c8ca9a3385d58389e7fd41fcdab18..2cd226c6d80fccb1ebad700f21e039dc60b837ea 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj
@@ -196,6 +196,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -204,7 +205,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
index 176204fac179f7031944d53571a219027e50299f..66afc8f2fc1392f7a4db83d60d9af23d82e6017c 100644
--- a/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
+++ b/vsprojects/vcxproj/test/codegen_test_minimal/codegen_test_minimal.vcxproj.filters
@@ -132,6 +132,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -156,9 +159,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
index 08b3acd03cdce5b1c10b844083e38b12708c6d10..5a2d6acd5632c825d5b1f4eacc4428e8d441028f 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
@@ -207,6 +207,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_concurrent_streams.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_age.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_idle.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_message_length.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\negative_deadline.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
index 3a8670c1fae35832ae4f6c3a452a89f1c6f31f1b..3a870b945e65ae777c0433244a6b8e88237b3189 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
@@ -85,6 +85,12 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_concurrent_streams.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_age.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_idle.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_message_length.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
index 96418c3ca543a402fe4642f162471f784749576a..4b001a751d8d76ab4f5b6c50b8d6a4b57604d4cd 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -209,6 +209,10 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_concurrent_streams.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_age.c">
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_idle.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_message_length.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\negative_deadline.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
index cf40abef436b9aaccff25f31d316bce9deeafbcb..2eace64a893fefc8a0bcf57f635a460855352137 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
@@ -88,6 +88,12 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_concurrent_streams.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_age.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_connection_idle.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\max_message_length.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj b/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj
index 7e6b4df961a34ba81752ecedae61287230acce2b..33a1d9daf1e2a715186d9b868b7dbd3750b881d3 100644
--- a/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj
+++ b/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj
@@ -158,7 +158,7 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\security\b64_test.c">
+    <ClCompile Include="$(SolutionDir)\..\test\core\slice\b64_test.c">
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
diff --git a/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj.filters b/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj.filters
index 4335011fe35776bb2a4161770767b7099db39a26..db2b009bb2a264174a69365d19e15b1e9a96da1e 100644
--- a/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/grpc_b64_test/grpc_b64_test.vcxproj.filters
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <ClCompile Include="$(SolutionDir)\..\test\core\security\b64_test.c">
-      <Filter>test\core\security</Filter>
+    <ClCompile Include="$(SolutionDir)\..\test\core\slice\b64_test.c">
+      <Filter>test\core\slice</Filter>
     </ClCompile>
   </ItemGroup>
 
@@ -13,8 +13,8 @@
     <Filter Include="test\core">
       <UniqueIdentifier>{409b4a57-584c-1dc5-db72-1e8d4c462e9d}</UniqueIdentifier>
     </Filter>
-    <Filter Include="test\core\security">
-      <UniqueIdentifier>{0cb2c3ef-ed46-78ae-140c-29f21dc6fdb1}</UniqueIdentifier>
+    <Filter Include="test\core\slice">
+      <UniqueIdentifier>{786c8515-5a25-ca02-9df6-3ba75e55423f}</UniqueIdentifier>
     </Filter>
   </ItemGroup>
 </Project>
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
index e5d4f0be9310893481e8239b70fba9e1d8248840..d83a496e3b8815bf02831c8c7a6ebacce83c0ab4 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj
@@ -197,6 +197,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -205,7 +206,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
index 5cba594b4803772a190e0cca36252636d70b305e..64e3caf74066cc91bd23531af1ef7ae44e9ce84a 100644
--- a/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/grpc_tool_test/grpc_tool_test.vcxproj.filters
@@ -123,6 +123,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -147,9 +150,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
index fc2355624f8097fe896fe0010118f6ffc1c1d481..13a5bb491002733e181e85e1cc126729ea4bd5d4 100644
--- a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
+++ b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj
@@ -196,6 +196,7 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\exec_ctx_fwd.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\grpc_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h" />
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\atm_gcc_atomic.h" />
@@ -204,7 +205,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\gpr_types.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h" />
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_generic.h" />
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync_posix.h" />
diff --git a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
index e6b4a924589e69650de045401155c924a806b219..189a3367141dd6c2ac8db2ad040400d899beea98 100644
--- a/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/proto_utils_test/proto_utils_test.vcxproj.filters
@@ -114,6 +114,9 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\propagation_bits.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
+      <Filter>include\grpc\impl\codegen</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\status.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
@@ -138,9 +141,6 @@
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\port_platform.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\slice.h">
-      <Filter>include\grpc\impl\codegen</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\include\grpc\impl\codegen\sync.h">
       <Filter>include\grpc\impl\codegen</Filter>
     </ClInclude>
diff --git a/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj b/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj
index fed916f50a966eaee18137052ac0cff859ff336f..2944a31c4835a4157ba1377426fbe0d954272325 100644
--- a/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj
+++ b/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj
@@ -205,8 +205,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\interop\stress_test.cc">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\create_test_channel.cc">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\util\metrics_server.cc">
     </ClCompile>
   </ItemGroup>
diff --git a/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj.filters b/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj.filters
index 9339621c8d1940def4e4c6b16f14a97c79fba194..83dc09a1d4beccd07ae41be33104079f6f418435 100644
--- a/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/stress_test/stress_test.vcxproj.filters
@@ -22,9 +22,6 @@
     <ClCompile Include="$(SolutionDir)\..\test\cpp\interop\stress_test.cc">
       <Filter>test\cpp\interop</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\test\cpp\util\create_test_channel.cc">
-      <Filter>test\cpp\util</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\cpp\util\metrics_server.cc">
       <Filter>test\cpp\util</Filter>
     </ClCompile>