Merge github.com:grpc/grpc into newlines

BUILD

@@ -53,7 +53,6 @@ cc_library(
     "src/core/lib/support/env.h",
     "src/core/lib/support/mpscq.h",
     "src/core/lib/support/murmur_hash.h",
-    "src/core/lib/support/percent_encoding.h",
     "src/core/lib/support/stack_lockfree.h",
     "src/core/lib/support/string.h",
     "src/core/lib/support/string_windows.h",
@@ -82,9 +81,6 @@ cc_library(
     "src/core/lib/support/log_windows.c",
     "src/core/lib/support/mpscq.c",
     "src/core/lib/support/murmur_hash.c",
-    "src/core/lib/support/percent_encoding.c",
-    "src/core/lib/support/slice.c",
-    "src/core/lib/support/slice_buffer.c",
     "src/core/lib/support/stack_lockfree.c",
     "src/core/lib/support/string.c",
     "src/core/lib/support/string_posix.c",
@@ -122,8 +118,6 @@ cc_library(
     "include/grpc/support/log.h",
     "include/grpc/support/log_windows.h",
     "include/grpc/support/port_platform.h",
-    "include/grpc/support/slice.h",
-    "include/grpc/support/slice_buffer.h",
     "include/grpc/support/string_util.h",
     "include/grpc/support/subprocess.h",
     "include/grpc/support/sync.h",
@@ -185,7 +179,6 @@ cc_library(
     "src/core/lib/iomgr/endpoint_pair.h",
     "src/core/lib/iomgr/error.h",
     "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_and_epoll_posix.h",
     "src/core/lib/iomgr/ev_poll_posix.h",
     "src/core/lib/iomgr/ev_posix.h",
     "src/core/lib/iomgr/exec_ctx.h",
@@ -209,6 +202,7 @@ 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_mutator.h",
     "src/core/lib/iomgr/socket_utils.h",
     "src/core/lib/iomgr/socket_utils_posix.h",
     "src/core/lib/iomgr/socket_windows.h",
@@ -235,6 +229,8 @@ 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/percent_encoding.h",
+    "src/core/lib/slice/slice_string_helpers.h",
     "src/core/lib/surface/api_trace.h",
     "src/core/lib/surface/call.h",
     "src/core/lib/surface/call_test_only.h",
@@ -358,7 +354,6 @@ cc_library(
     "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_and_epoll_posix.c",
     "src/core/lib/iomgr/ev_poll_posix.c",
     "src/core/lib/iomgr/ev_posix.c",
     "src/core/lib/iomgr/exec_ctx.c",
@@ -380,6 +375,7 @@ 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_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",
@@ -413,6 +409,10 @@ 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/percent_encoding.c",
+    "src/core/lib/slice/slice.c",
+    "src/core/lib/slice/slice_buffer.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",
@@ -547,6 +547,8 @@ cc_library(
     "include/grpc/grpc.h",
     "include/grpc/grpc_posix.h",
     "include/grpc/grpc_security_constants.h",
+    "include/grpc/slice.h",
+    "include/grpc/slice_buffer.h",
     "include/grpc/status.h",
     "include/grpc/impl/codegen/byte_buffer_reader.h",
     "include/grpc/impl/codegen/compression_types.h",
@@ -611,7 +613,6 @@ cc_library(
     "src/core/lib/iomgr/endpoint_pair.h",
     "src/core/lib/iomgr/error.h",
     "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_and_epoll_posix.h",
     "src/core/lib/iomgr/ev_poll_posix.h",
     "src/core/lib/iomgr/ev_posix.h",
     "src/core/lib/iomgr/exec_ctx.h",
@@ -635,6 +636,7 @@ 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_mutator.h",
     "src/core/lib/iomgr/socket_utils.h",
     "src/core/lib/iomgr/socket_utils_posix.h",
     "src/core/lib/iomgr/socket_windows.h",
@@ -661,6 +663,8 @@ 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/percent_encoding.h",
+    "src/core/lib/slice/slice_string_helpers.h",
     "src/core/lib/surface/api_trace.h",
     "src/core/lib/surface/call.h",
     "src/core/lib/surface/call_test_only.h",
@@ -769,7 +773,6 @@ cc_library(
     "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_and_epoll_posix.c",
     "src/core/lib/iomgr/ev_poll_posix.c",
     "src/core/lib/iomgr/ev_posix.c",
     "src/core/lib/iomgr/exec_ctx.c",
@@ -791,6 +794,7 @@ 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_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",
@@ -824,6 +828,10 @@ 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/percent_encoding.c",
+    "src/core/lib/slice/slice.c",
+    "src/core/lib/slice/slice_buffer.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",
@@ -933,6 +941,8 @@ cc_library(
     "include/grpc/grpc.h",
     "include/grpc/grpc_posix.h",
     "include/grpc/grpc_security_constants.h",
+    "include/grpc/slice.h",
+    "include/grpc/slice_buffer.h",
     "include/grpc/status.h",
     "include/grpc/impl/codegen/byte_buffer_reader.h",
     "include/grpc/impl/codegen/compression_types.h",
@@ -992,7 +1002,6 @@ cc_library(
     "src/core/lib/iomgr/endpoint_pair.h",
     "src/core/lib/iomgr/error.h",
     "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_and_epoll_posix.h",
     "src/core/lib/iomgr/ev_poll_posix.h",
     "src/core/lib/iomgr/ev_posix.h",
     "src/core/lib/iomgr/exec_ctx.h",
@@ -1016,6 +1025,7 @@ 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_mutator.h",
     "src/core/lib/iomgr/socket_utils.h",
     "src/core/lib/iomgr/socket_utils_posix.h",
     "src/core/lib/iomgr/socket_windows.h",
@@ -1042,6 +1052,8 @@ 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/percent_encoding.h",
+    "src/core/lib/slice/slice_string_helpers.h",
     "src/core/lib/surface/api_trace.h",
     "src/core/lib/surface/call.h",
     "src/core/lib/surface/call_test_only.h",
@@ -1142,7 +1154,6 @@ cc_library(
     "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_and_epoll_posix.c",
     "src/core/lib/iomgr/ev_poll_posix.c",
     "src/core/lib/iomgr/ev_posix.c",
     "src/core/lib/iomgr/exec_ctx.c",
@@ -1164,6 +1175,7 @@ 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_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",
@@ -1197,6 +1209,10 @@ 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/percent_encoding.c",
+    "src/core/lib/slice/slice.c",
+    "src/core/lib/slice/slice_buffer.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",
@@ -1302,6 +1318,8 @@ cc_library(
     "include/grpc/grpc.h",
     "include/grpc/grpc_posix.h",
     "include/grpc/grpc_security_constants.h",
+    "include/grpc/slice.h",
+    "include/grpc/slice_buffer.h",
     "include/grpc/status.h",
     "include/grpc/impl/codegen/byte_buffer_reader.h",
     "include/grpc/impl/codegen/compression_types.h",
@@ -1370,6 +1388,7 @@ cc_library(
     "src/cpp/common/core_codegen.cc",
     "src/cpp/common/resource_quota_cc.cc",
     "src/cpp/common/rpc_method.cc",
+    "src/cpp/common/version_cc.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
     "src/cpp/server/dynamic_thread_pool.cc",
@@ -1513,6 +1532,7 @@ cc_library(
     "src/cpp/common/core_codegen.cc",
     "src/cpp/common/resource_quota_cc.cc",
     "src/cpp/common/rpc_method.cc",
+    "src/cpp/common/version_cc.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
     "src/cpp/server/dynamic_thread_pool.cc",
@@ -1677,6 +1697,7 @@ cc_library(
     "src/cpp/common/core_codegen.cc",
     "src/cpp/common/resource_quota_cc.cc",
     "src/cpp/common/rpc_method.cc",
+    "src/cpp/common/version_cc.cc",
     "src/cpp/server/async_generic_service.cc",
     "src/cpp/server/create_default_thread_pool.cc",
     "src/cpp/server/dynamic_thread_pool.cc",
@@ -1882,9 +1903,6 @@ objc_library(
     "src/core/lib/support/log_windows.c",
     "src/core/lib/support/mpscq.c",
     "src/core/lib/support/murmur_hash.c",
-    "src/core/lib/support/percent_encoding.c",
-    "src/core/lib/support/slice.c",
-    "src/core/lib/support/slice_buffer.c",
     "src/core/lib/support/stack_lockfree.c",
     "src/core/lib/support/string.c",
     "src/core/lib/support/string_posix.c",
@@ -1922,8 +1940,6 @@ objc_library(
     "include/grpc/support/log.h",
     "include/grpc/support/log_windows.h",
     "include/grpc/support/port_platform.h",
-    "include/grpc/support/slice.h",
-    "include/grpc/support/slice_buffer.h",
     "include/grpc/support/string_util.h",
     "include/grpc/support/subprocess.h",
     "include/grpc/support/sync.h",
@@ -1954,7 +1970,6 @@ objc_library(
     "src/core/lib/support/env.h",
     "src/core/lib/support/mpscq.h",
     "src/core/lib/support/murmur_hash.h",
-    "src/core/lib/support/percent_encoding.h",
     "src/core/lib/support/stack_lockfree.h",
     "src/core/lib/support/string.h",
     "src/core/lib/support/string_windows.h",
@@ -2000,7 +2015,6 @@ objc_library(
     "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_and_epoll_posix.c",
     "src/core/lib/iomgr/ev_poll_posix.c",
     "src/core/lib/iomgr/ev_posix.c",
     "src/core/lib/iomgr/exec_ctx.c",
@@ -2022,6 +2036,7 @@ objc_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_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",
@@ -2055,6 +2070,10 @@ objc_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/percent_encoding.c",
+    "src/core/lib/slice/slice.c",
+    "src/core/lib/slice/slice_buffer.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",
@@ -2189,6 +2208,8 @@ objc_library(
     "include/grpc/grpc.h",
     "include/grpc/grpc_posix.h",
     "include/grpc/grpc_security_constants.h",
+    "include/grpc/slice.h",
+    "include/grpc/slice_buffer.h",
     "include/grpc/status.h",
     "include/grpc/impl/codegen/byte_buffer_reader.h",
     "include/grpc/impl/codegen/compression_types.h",
@@ -2232,7 +2253,6 @@ objc_library(
     "src/core/lib/iomgr/endpoint_pair.h",
     "src/core/lib/iomgr/error.h",
     "src/core/lib/iomgr/ev_epoll_linux.h",
-    "src/core/lib/iomgr/ev_poll_and_epoll_posix.h",
     "src/core/lib/iomgr/ev_poll_posix.h",
     "src/core/lib/iomgr/ev_posix.h",
     "src/core/lib/iomgr/exec_ctx.h",
@@ -2256,6 +2276,7 @@ objc_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_mutator.h",
     "src/core/lib/iomgr/socket_utils.h",
     "src/core/lib/iomgr/socket_utils_posix.h",
     "src/core/lib/iomgr/socket_windows.h",
@@ -2282,6 +2303,8 @@ objc_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/percent_encoding.h",
+    "src/core/lib/slice/slice_string_helpers.h",
     "src/core/lib/surface/api_trace.h",
     "src/core/lib/surface/call.h",
     "src/core/lib/surface/call_test_only.h",

CMakeLists.txt

@@ -193,9 +193,6 @@ add_library(gpr
   src/core/lib/support/log_windows.c
   src/core/lib/support/mpscq.c
   src/core/lib/support/murmur_hash.c
-  src/core/lib/support/percent_encoding.c
-  src/core/lib/support/slice.c
-  src/core/lib/support/slice_buffer.c
   src/core/lib/support/stack_lockfree.c
   src/core/lib/support/string.c
   src/core/lib/support/string_posix.c
@@ -244,8 +241,6 @@ foreach(_hdr
   include/grpc/support/log.h
   include/grpc/support/log_windows.h
   include/grpc/support/port_platform.h
-  include/grpc/support/slice.h
-  include/grpc/support/slice_buffer.h
   include/grpc/support/string_util.h
   include/grpc/support/subprocess.h
   include/grpc/support/sync.h
@@ -314,7 +309,6 @@ add_library(grpc
   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_and_epoll_posix.c
   src/core/lib/iomgr/ev_poll_posix.c
   src/core/lib/iomgr/ev_posix.c
   src/core/lib/iomgr/exec_ctx.c
@@ -336,6 +330,7 @@ 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_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
@@ -369,6 +364,10 @@ 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/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.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
@@ -523,6 +522,8 @@ foreach(_hdr
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
@@ -587,7 +588,6 @@ add_library(grpc_cronet
   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_and_epoll_posix.c
   src/core/lib/iomgr/ev_poll_posix.c
   src/core/lib/iomgr/ev_posix.c
   src/core/lib/iomgr/exec_ctx.c
@@ -609,6 +609,7 @@ 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_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
@@ -642,6 +643,10 @@ 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/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.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
@@ -767,6 +772,8 @@ foreach(_hdr
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
@@ -832,7 +839,6 @@ add_library(grpc_unsecure
   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_and_epoll_posix.c
   src/core/lib/iomgr/ev_poll_posix.c
   src/core/lib/iomgr/ev_posix.c
   src/core/lib/iomgr/exec_ctx.c
@@ -854,6 +860,7 @@ 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_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
@@ -887,6 +894,10 @@ 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/percent_encoding.c
+  src/core/lib/slice/slice.c
+  src/core/lib/slice/slice_buffer.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
@@ -1010,6 +1021,8 @@ foreach(_hdr
   include/grpc/grpc.h
   include/grpc/grpc_posix.h
   include/grpc/grpc_security_constants.h
+  include/grpc/slice.h
+  include/grpc/slice_buffer.h
   include/grpc/status.h
   include/grpc/impl/codegen/byte_buffer_reader.h
   include/grpc/impl/codegen/compression_types.h
@@ -1069,6 +1082,7 @@ add_library(grpc++
   src/cpp/common/core_codegen.cc
   src/cpp/common/resource_quota_cc.cc
   src/cpp/common/rpc_method.cc
+  src/cpp/common/version_cc.cc
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc
@@ -1226,6 +1240,7 @@ add_library(grpc++_cronet
   src/cpp/common/core_codegen.cc
   src/cpp/common/resource_quota_cc.cc
   src/cpp/common/rpc_method.cc
+  src/cpp/common/version_cc.cc
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc
@@ -1421,6 +1436,7 @@ add_library(grpc++_unsecure
   src/cpp/common/core_codegen.cc
   src/cpp/common/resource_quota_cc.cc
   src/cpp/common/rpc_method.cc
+  src/cpp/common/version_cc.cc
   src/cpp/server/async_generic_service.cc
   src/cpp/server/create_default_thread_pool.cc
   src/cpp/server/dynamic_thread_pool.cc

binding.gyp

@@ -520,9 +520,6 @@
         'src/core/lib/support/log_windows.c',
         'src/core/lib/support/mpscq.c',
         'src/core/lib/support/murmur_hash.c',
-        'src/core/lib/support/percent_encoding.c',
-        'src/core/lib/support/slice.c',
-        'src/core/lib/support/slice_buffer.c',
         'src/core/lib/support/stack_lockfree.c',
         'src/core/lib/support/string.c',
         'src/core/lib/support/string_posix.c',
@@ -592,7 +589,6 @@
         '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_and_epoll_posix.c',
         'src/core/lib/iomgr/ev_poll_posix.c',
         'src/core/lib/iomgr/ev_posix.c',
         'src/core/lib/iomgr/exec_ctx.c',
@@ -614,6 +610,7 @@
         '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_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',
@@ -647,6 +644,10 @@
         '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/percent_encoding.c',
+        'src/core/lib/slice/slice.c',
+        'src/core/lib/slice/slice_buffer.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',

build.yaml

@@ -12,6 +12,7 @@ settings:
   '#08': Use "-preN" suffixes to identify pre-release versions
   '#09': Per-language overrides are possible with (eg) ruby_version tag here
   '#10': See the expand_version.py for all the quirks here
+  core_version: 2.0.0-dev
   g_stands_for: good
   version: 1.1.0-dev
 filegroups:
@@ -64,8 +65,6 @@ filegroups:
   - include/grpc/support/log.h
   - include/grpc/support/log_windows.h
   - include/grpc/support/port_platform.h
-  - include/grpc/support/slice.h
-  - include/grpc/support/slice_buffer.h
   - include/grpc/support/string_util.h
   - include/grpc/support/subprocess.h
   - include/grpc/support/sync.h
@@ -86,7 +85,6 @@ filegroups:
   - src/core/lib/support/env.h
   - src/core/lib/support/mpscq.h
   - src/core/lib/support/murmur_hash.h
-  - src/core/lib/support/percent_encoding.h
   - src/core/lib/support/stack_lockfree.h
   - src/core/lib/support/string.h
   - src/core/lib/support/string_windows.h
@@ -116,9 +114,6 @@ filegroups:
   - src/core/lib/support/log_windows.c
   - src/core/lib/support/mpscq.c
   - src/core/lib/support/murmur_hash.c
-  - src/core/lib/support/percent_encoding.c
-  - src/core/lib/support/slice.c
-  - src/core/lib/support/slice_buffer.c
   - src/core/lib/support/stack_lockfree.c
   - src/core/lib/support/string.c
   - src/core/lib/support/string_posix.c
@@ -164,6 +159,8 @@ filegroups:
   - include/grpc/grpc.h
   - include/grpc/grpc_posix.h
   - include/grpc/grpc_security_constants.h
+  - include/grpc/slice.h
+  - include/grpc/slice_buffer.h
   - include/grpc/status.h
   headers:
   - src/core/lib/channel/channel_args.h
@@ -189,7 +186,6 @@ filegroups:
   - src/core/lib/iomgr/endpoint_pair.h
   - src/core/lib/iomgr/error.h
   - src/core/lib/iomgr/ev_epoll_linux.h
-  - src/core/lib/iomgr/ev_poll_and_epoll_posix.h
   - src/core/lib/iomgr/ev_poll_posix.h
   - src/core/lib/iomgr/ev_posix.h
   - src/core/lib/iomgr/exec_ctx.h
@@ -213,6 +209,7 @@ 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_mutator.h
   - src/core/lib/iomgr/socket_utils.h
   - src/core/lib/iomgr/socket_utils_posix.h
   - src/core/lib/iomgr/socket_windows.h
@@ -239,6 +236,8 @@ 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/percent_encoding.h
+  - src/core/lib/slice/slice_string_helpers.h
   - src/core/lib/surface/api_trace.h
   - src/core/lib/surface/call.h
   - src/core/lib/surface/call_test_only.h
@@ -286,7 +285,6 @@ filegroups:
   - 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_and_epoll_posix.c
   - src/core/lib/iomgr/ev_poll_posix.c
   - src/core/lib/iomgr/ev_posix.c
   - src/core/lib/iomgr/exec_ctx.c
@@ -308,6 +306,7 @@ 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_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
@@ -341,6 +340,10 @@ 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/percent_encoding.c
+  - src/core/lib/slice/slice.c
+  - src/core/lib/slice/slice_buffer.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
@@ -751,6 +754,7 @@ filegroups:
   - src/cpp/common/core_codegen.cc
   - src/cpp/common/resource_quota_cc.cc
   - src/cpp/common/rpc_method.cc
+  - src/cpp/common/version_cc.cc
   - src/cpp/server/async_generic_service.cc
   - src/cpp/server/create_default_thread_pool.cc
   - src/cpp/server/dynamic_thread_pool.cc
@@ -1792,30 +1796,6 @@ targets:
   deps:
   - gpr_test_util
   - gpr
-- name: gpr_percent_encoding_test
-  build: test
-  language: c
-  src:
-  - test/core/support/percent_encoding_test.c
-  deps:
-  - gpr_test_util
-  - gpr
-- name: gpr_slice_buffer_test
-  build: test
-  language: c
-  src:
-  - test/core/support/slice_buffer_test.c
-  deps:
-  - gpr_test_util
-  - gpr
-- name: gpr_slice_test
-  build: test
-  language: c
-  src:
-  - test/core/support/slice_test.c
-  deps:
-  - gpr_test_util
-  - gpr
 - name: gpr_stack_lockfree_test
   cpu_cost: 7
   build: test
@@ -2108,7 +2088,7 @@ targets:
   - gpr_test_util
   - gpr
   corpus_dirs:
-  - test/core/http/corpus
+  - test/core/http/request_corpus
   maxlen: 2048
 - name: http_response_fuzzer_test
   build: fuzzer
@@ -2121,7 +2101,7 @@ targets:
   - gpr_test_util
   - gpr
   corpus_dirs:
-  - test/core/http/corpus
+  - test/core/http/response_corpus
   maxlen: 2048
 - name: httpcli_format_request_test
   build: test
@@ -2393,28 +2373,38 @@ targets:
   build: fuzzer
   language: c
   src:
-  - test/core/support/percent_decode_fuzzer.c
+  - test/core/slice/percent_decode_fuzzer.c
   deps:
   - grpc_test_util
   - grpc
   - gpr_test_util
   - gpr
   corpus_dirs:
-  - test/core/support/percent_decode_corpus
+  - test/core/slice/percent_decode_corpus
   maxlen: 32
 - name: percent_encode_fuzzer
   build: fuzzer
   language: c
   src:
-  - test/core/support/percent_encode_fuzzer.c
+  - test/core/slice/percent_encode_fuzzer.c
   deps:
   - grpc_test_util
   - grpc
   - gpr_test_util
   - gpr
   corpus_dirs:
-  - test/core/support/percent_encode_corpus
+  - test/core/slice/percent_encode_corpus
   maxlen: 32
+- name: percent_encoding_test
+  build: test
+  language: c
+  src:
+  - test/core/slice/percent_encoding_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: resolve_address_test
   build: test
   language: c
@@ -2520,6 +2510,36 @@ targets:
   - gpr
   exclude_iomgrs:
   - uv
+- name: slice_buffer_test
+  build: test
+  language: c
+  src:
+  - test/core/slice/slice_buffer_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: slice_string_helpers_test
+  build: test
+  language: c
+  src:
+  - test/core/slice/slice_string_helpers_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: slice_test
+  build: test
+  language: c
+  src:
+  - test/core/slice/slice_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: sockaddr_resolver_test
   build: test
   language: c
@@ -2556,6 +2576,19 @@ targets:
   - mac
   - linux
   - posix
+- name: ssl_server_fuzzer
+  build: fuzzer
+  language: c
+  src:
+  - test/core/security/ssl_server_fuzzer.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+  corpus_dirs:
+  - test/core/security/corpus/ssl_server_corpus
+  maxlen: 2048
 - name: tcp_client_posix_test
   cpu_cost: 0.5
   build: test
@@ -2798,6 +2831,16 @@ targets:
   - grpc++
   - grpc
   - gpr
+- name: channel_filter_test
+  gtest: true
+  build: test
+  language: c++
+  src:
+  - test/cpp/common/channel_filter_test.cc
+  deps:
+  - grpc++
+  - grpc
+  - gpr
 - name: cli_call_test
   gtest: true
   build: test

config.m4

@@ -58,9 +58,6 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/support/log_windows.c \
     src/core/lib/support/mpscq.c \
     src/core/lib/support/murmur_hash.c \
-    src/core/lib/support/percent_encoding.c \
-    src/core/lib/support/slice.c \
-    src/core/lib/support/slice_buffer.c \
     src/core/lib/support/stack_lockfree.c \
     src/core/lib/support/string.c \
     src/core/lib/support/string_posix.c \
@@ -108,7 +105,6 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/iomgr/endpoint_pair_windows.c \
     src/core/lib/iomgr/error.c \
     src/core/lib/iomgr/ev_epoll_linux.c \
-    src/core/lib/iomgr/ev_poll_and_epoll_posix.c \
     src/core/lib/iomgr/ev_poll_posix.c \
     src/core/lib/iomgr/ev_posix.c \
     src/core/lib/iomgr/exec_ctx.c \
@@ -130,6 +126,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/iomgr/resolve_address_windows.c \
     src/core/lib/iomgr/resource_quota.c \
     src/core/lib/iomgr/sockaddr_utils.c \
+    src/core/lib/iomgr/socket_mutator.c \
     src/core/lib/iomgr/socket_utils_common_posix.c \
     src/core/lib/iomgr/socket_utils_linux.c \
     src/core/lib/iomgr/socket_utils_posix.c \
@@ -163,6 +160,10 @@ if test "$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/percent_encoding.c \
+    src/core/lib/slice/slice.c \
+    src/core/lib/slice/slice_buffer.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 \
@@ -632,6 +633,7 @@ if test "$PHP_GRPC" != "no"; then
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/security/credentials/ssl)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/security/transport)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/security/util)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/slice)
   PHP_ADD_BUILD_DIR($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)

doc/PROTOCOL-WEB.md

@@ -0,0 +1,150 @@
+# Overview
+
+gRPC-Web provides a JS client library that supports the same API
+as gRPC-Node to access a gRPC service. Due to browser limitation,
+the Web client library implements a different protocol than the
+[native gRPC protocol](http://www.grpc.io/docs/guides/wire.html).
+This protocol is designed to make it easy for a proxy to translate
+between the protocols as this is the most likely deployment model.
+
+This document lists the differences between the two protocols.
+To help tracking future revisions, this document describes a delta
+with the protocol details specified in the
+[native gRPC protocol](http://www.grpc.io/docs/guides/wire.html).
+
+# Design goals
+
+For the gRPC-Web protocol, we have decided on the following design goals:
+
+* adopt the same framing as “application/grpc” whenever possible
+* decouple from HTTP/2 framing which is not, and will never, be directly
+exposed by browsers
+* support text streams (e.g. base64) in order to provide cross-browser
+support (e.g. IE-10)
+
+While the new protocol will be published/reviewed publicly, we also
+intend to keep the protocol as an internal detail to gRPC-Web.
+More specifically, we expect the protocol to
+
+* evolve over time, mainly to optimize for browser clients or support
+web-specific features such as CORS, XSRF
+* become optional (in 1-2 years) when browsers are able to speak the native
+gRPC protocol via the new [whatwg fetch/streams API](https://github.com/whatwg/fetch)
+
+# Protocol differences vs [gRPC over HTTP2](http://www.grpc.io/docs/guides/wire.html)
+
+Content-Type
+
+1. application/grpc-web
+  * e.g. application/grpc-web+[proto, json, thrift]
+2. application/grpc-web-text
+  * text-encoded streams of “application/grpc-web”
+
+---
+
+HTTP wire protocols
+
+1. support any HTTP/*, with no dependency on HTTP/2 specific framing
+2. use lower-case header/trailer names
+3. use EOF (end of body) to close the stream
+
+---
+
+HTTP/2 related behavior (specified in [gRPC over HTTP2](http://www.grpc.io/docs/guides/wire.html))
+
+1. stream-id is not supported or used
+2. go-away is not supported or used
+
+---
+
+Message framing (vs. [http2-transport-mapping](http://www.grpc.io/docs/guides/wire.html#http2-transport-mapping))
+
+1. Response status encoded as part of the response body
+  * Key-value pairs encoded in the HTTP/2 [literal header format](https://tools.ietf.org/html/rfc7541#section-6.2) as a single header block.
+2. 8th (MSB) bit of the 1st gRPC frame byte
+  * 0: data
+  * 1: trailers
+3. Trailers must be the last message of the response, as enforced
+by the implementation
+4. Trailers-only responses: no change to the gRPC protocol spec.
+Trailers will be sent together with response headers, with no message
+in the body.
+
+---
+
+User Agent
+
+* grpc-web-javascript/0.1
+
+---
+
+Text-encoded (response) streams
+
+1. The client library should indicate to the server via the "Accept" header that
+the response stream needs to be text encoded e.g. when XHR is used or due
+to security policies with XHR
+  * Accept: application/grpc-web-text
+2. The default text encoding is base64
+  * Text encoding may be specified with Content-Type or Accept headers as
+      * application/grpc-web-text-base64
+  * Note that “Content-Transfer-Encoding: base64” should not be used.
+  Due to in-stream base64 padding when delimiting messages, the entire
+  response body is not necessarily a valid base64-encoded entity
+  * While the server runtime will always base64-encode and flush gRPC messages
+  atomically the client library should not assume base64 padding always
+  happens at the boundary of message frames.
+3. For binary trailers, when the content-type is set to
+application/grpc-web-text, the extra base64 encoding specified
+in [gRPC over HTTP2](http://www.grpc.io/docs/guides/wire.html)
+for binary custom metadata is skipped.
+
+# Other features
+
+Compression
+
+* Full-body compression is supported and expected for all unary
+requests/responses. The compression/decompression will be done
+by browsers, using standard Content-Encoding headers
+  * “grpc-encoding” header is not used
+  * SDCH, Brotli will be supported
+* Message-level compression for streamed requests/responses is not supported
+because manual compression/decompression is prohibitively expensive using JS
+  * Per-message compression may be feasible in future with wasm
+
+---
+
+Retries, caching
+
+* Will spec out the support after their respective gRPC spec extensions
+are finalized
+  * Safe retries: PUT
+  * Caching: header encoded request and/or a web specific spec
+
+---
+
+Security
+
+* XSRF, XSS etc to be specified
+
+---
+
+CORS preflight
+
+* The client library may support header overwrites to avoid preflight
+  * https://github.com/whatwg/fetch/issues/210
+* CSP support to be specified
+
+---
+
+Keep-alive
+
+* HTTP/2 PING is not supported or used
+* Will not support send-beacon (GET)
+
+---
+
+Bidi-streaming, with flow-control
+
+* Pending on [whatwg fetch/streams](https://github.com/whatwg/fetch) to be
+finalized and implemented in modern browsers
+* gRPC-Web client will support the native gRPC protocol with modern browsers

doc/core/pending_api_cleanups.md

@@ -13,7 +13,5 @@ number:
 
 - remove `GRPC_ARG_MAX_MESSAGE_LENGTH` channel arg from
   `include/grpc/impl/codegen/grpc_types.h` (commit `af00d8b`)
-- remove `ServerBuilder::SetMaxMessageSize()` method from
-  `include/grpc++/server_builder.h` (commit `6980362`)
-- remove `GRPC_INITIAL_METADATA_IGNORE_CONNECTIVITY` macro from
-  `include/grpc/impl/codegen/grpc_types.h` (commit `59c9f90`)
+  (cannot be done until after next grpc release, so that TensorFlow can
+  use the same code both internally and externally)

doc/cpp/pending_api_cleanups.md

@@ -11,5 +11,7 @@ This file lists all pending backward-compatibility changes that should
 be cleaned up the next time we are going to bump the major version
 number:
 
+- remove `ServerBuilder::SetMaxMessageSize()` method from
+  `include/grpc++/server_builder.h` (commit `6980362`)
 - remove `ClientContext::set_fail_fast()` method from
   `include/grpc++/impl/codegen/client_context.h` (commit `9477724`)

gRPC-Core.podspec

@@ -129,8 +129,6 @@ Pod::Spec.new do |s|
                       'include/grpc/support/log.h',
                       'include/grpc/support/log_windows.h',
                       'include/grpc/support/port_platform.h',
-                      'include/grpc/support/slice.h',
-                      'include/grpc/support/slice_buffer.h',
                       'include/grpc/support/string_util.h',
                       'include/grpc/support/subprocess.h',
                       'include/grpc/support/sync.h',
@@ -161,6 +159,8 @@ Pod::Spec.new do |s|
                       'include/grpc/grpc.h',
                       'include/grpc/grpc_posix.h',
                       'include/grpc/grpc_security_constants.h',
+                      'include/grpc/slice.h',
+                      'include/grpc/slice_buffer.h',
                       'include/grpc/status.h',
                       'include/grpc/impl/codegen/byte_buffer_reader.h',
                       'include/grpc/impl/codegen/compression_types.h',
@@ -195,7 +195,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/support/env.h',
                       'src/core/lib/support/mpscq.h',
                       'src/core/lib/support/murmur_hash.h',
-                      'src/core/lib/support/percent_encoding.h',
                       'src/core/lib/support/stack_lockfree.h',
                       'src/core/lib/support/string.h',
                       'src/core/lib/support/string_windows.h',
@@ -224,9 +223,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/support/log_windows.c',
                       'src/core/lib/support/mpscq.c',
                       'src/core/lib/support/murmur_hash.c',
-                      'src/core/lib/support/percent_encoding.c',
-                      'src/core/lib/support/slice.c',
-                      'src/core/lib/support/slice_buffer.c',
                       'src/core/lib/support/stack_lockfree.c',
                       'src/core/lib/support/string.c',
                       'src/core/lib/support/string_posix.c',
@@ -272,7 +268,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/endpoint_pair.h',
                       'src/core/lib/iomgr/error.h',
                       'src/core/lib/iomgr/ev_epoll_linux.h',
-                      'src/core/lib/iomgr/ev_poll_and_epoll_posix.h',
                       'src/core/lib/iomgr/ev_poll_posix.h',
                       'src/core/lib/iomgr/ev_posix.h',
                       'src/core/lib/iomgr/exec_ctx.h',
@@ -296,6 +291,7 @@ 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_mutator.h',
                       'src/core/lib/iomgr/socket_utils.h',
                       'src/core/lib/iomgr/socket_utils_posix.h',
                       'src/core/lib/iomgr/socket_windows.h',
@@ -322,6 +318,8 @@ 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/percent_encoding.h',
+                      'src/core/lib/slice/slice_string_helpers.h',
                       'src/core/lib/surface/api_trace.h',
                       'src/core/lib/surface/call.h',
                       'src/core/lib/surface/call_test_only.h',
@@ -449,7 +447,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/iomgr/endpoint_pair_windows.c',
                       'src/core/lib/iomgr/error.c',
                       'src/core/lib/iomgr/ev_epoll_linux.c',
-                      'src/core/lib/iomgr/ev_poll_and_epoll_posix.c',
                       'src/core/lib/iomgr/ev_poll_posix.c',
                       'src/core/lib/iomgr/ev_posix.c',
                       'src/core/lib/iomgr/exec_ctx.c',
@@ -471,6 +468,7 @@ 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_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',
@@ -504,6 +502,10 @@ 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/percent_encoding.c',
+                      'src/core/lib/slice/slice.c',
+                      'src/core/lib/slice/slice_buffer.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',
@@ -640,7 +642,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/support/env.h',
                               'src/core/lib/support/mpscq.h',
                               'src/core/lib/support/murmur_hash.h',
-                              'src/core/lib/support/percent_encoding.h',
                               'src/core/lib/support/stack_lockfree.h',
                               'src/core/lib/support/string.h',
                               'src/core/lib/support/string_windows.h',
@@ -670,7 +671,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/iomgr/endpoint_pair.h',
                               'src/core/lib/iomgr/error.h',
                               'src/core/lib/iomgr/ev_epoll_linux.h',
-                              'src/core/lib/iomgr/ev_poll_and_epoll_posix.h',
                               'src/core/lib/iomgr/ev_poll_posix.h',
                               'src/core/lib/iomgr/ev_posix.h',
                               'src/core/lib/iomgr/exec_ctx.h',
@@ -694,6 +694,7 @@ 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_mutator.h',
                               'src/core/lib/iomgr/socket_utils.h',
                               'src/core/lib/iomgr/socket_utils_posix.h',
                               'src/core/lib/iomgr/socket_windows.h',
@@ -720,6 +721,8 @@ 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/percent_encoding.h',
+                              'src/core/lib/slice/slice_string_helpers.h',
                               'src/core/lib/surface/api_trace.h',
                               'src/core/lib/surface/call.h',
                               'src/core/lib/surface/call_test_only.h',
@@ -840,6 +843,7 @@ Pod::Spec.new do |s|
 
     ss.source_files = 'test/core/end2end/cq_verifier.{c,h}',
                       'test/core/end2end/end2end_tests.{c,h}',
+                      'test/core/end2end/end2end_test_utils.c',
                       'test/core/end2end/tests/*.{c,h}',
                       'test/core/end2end/data/*.{c,h}',
                       'test/core/util/test_config.{c,h}',

grpc.def

@@ -72,6 +72,7 @@ EXPORTS
     grpc_census_call_set_context
     grpc_census_call_get_context
     grpc_channel_get_target
+    grpc_channel_get_info
     grpc_insecure_channel_create
     grpc_lame_client_channel_create
     grpc_channel_destroy
@@ -134,6 +135,35 @@ EXPORTS
     grpc_server_add_secure_http2_port
     grpc_call_set_credentials
     grpc_server_credentials_set_auth_metadata_processor
+    grpc_slice_ref
+    grpc_slice_unref
+    grpc_slice_new
+    grpc_slice_new_with_user_data
+    grpc_slice_new_with_len
+    grpc_slice_malloc
+    grpc_slice_from_copied_string
+    grpc_slice_from_copied_buffer
+    grpc_slice_from_static_string
+    grpc_slice_sub
+    grpc_slice_sub_no_ref
+    grpc_slice_split_tail
+    grpc_slice_split_head
+    gpr_empty_slice
+    grpc_slice_cmp
+    grpc_slice_str_cmp
+    grpc_slice_buffer_init
+    grpc_slice_buffer_destroy
+    grpc_slice_buffer_add
+    grpc_slice_buffer_add_indexed
+    grpc_slice_buffer_addn
+    grpc_slice_buffer_tiny_add
+    grpc_slice_buffer_pop
+    grpc_slice_buffer_reset_and_unref
+    grpc_slice_buffer_swap
+    grpc_slice_buffer_move_into
+    grpc_slice_buffer_trim_end
+    grpc_slice_buffer_move_first
+    grpc_slice_buffer_take_first
     gpr_malloc
     gpr_free
     gpr_realloc
@@ -183,35 +213,6 @@ EXPORTS
     gpr_log_verbosity_init
     gpr_set_log_function
     gpr_format_message
-    gpr_slice_ref
-    gpr_slice_unref
-    gpr_slice_new
-    gpr_slice_new_with_user_data
-    gpr_slice_new_with_len
-    gpr_slice_malloc
-    gpr_slice_from_copied_string
-    gpr_slice_from_copied_buffer
-    gpr_slice_from_static_string
-    gpr_slice_sub
-    gpr_slice_sub_no_ref
-    gpr_slice_split_tail
-    gpr_slice_split_head
-    gpr_empty_slice
-    gpr_slice_cmp
-    gpr_slice_str_cmp
-    gpr_slice_buffer_init
-    gpr_slice_buffer_destroy
-    gpr_slice_buffer_add
-    gpr_slice_buffer_add_indexed
-    gpr_slice_buffer_addn
-    gpr_slice_buffer_tiny_add
-    gpr_slice_buffer_pop
-    gpr_slice_buffer_reset_and_unref
-    gpr_slice_buffer_swap
-    gpr_slice_buffer_move_into
-    gpr_slice_buffer_trim_end
-    gpr_slice_buffer_move_first
-    gpr_slice_buffer_take_first
     gpr_strdup
     gpr_asprintf
     gpr_subprocess_binary_extension

grpc.gemspec

@@ -57,8 +57,6 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/support/log.h )
   s.files += %w( include/grpc/support/log_windows.h )
   s.files += %w( include/grpc/support/port_platform.h )
-  s.files += %w( include/grpc/support/slice.h )
-  s.files += %w( include/grpc/support/slice_buffer.h )
   s.files += %w( include/grpc/support/string_util.h )
   s.files += %w( include/grpc/support/subprocess.h )
   s.files += %w( include/grpc/support/sync.h )
@@ -89,7 +87,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/support/env.h )
   s.files += %w( src/core/lib/support/mpscq.h )
   s.files += %w( src/core/lib/support/murmur_hash.h )
-  s.files += %w( src/core/lib/support/percent_encoding.h )
   s.files += %w( src/core/lib/support/stack_lockfree.h )
   s.files += %w( src/core/lib/support/string.h )
   s.files += %w( src/core/lib/support/string_windows.h )
@@ -118,9 +115,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/support/log_windows.c )
   s.files += %w( src/core/lib/support/mpscq.c )
   s.files += %w( src/core/lib/support/murmur_hash.c )
-  s.files += %w( src/core/lib/support/percent_encoding.c )
-  s.files += %w( src/core/lib/support/slice.c )
-  s.files += %w( src/core/lib/support/slice_buffer.c )
   s.files += %w( src/core/lib/support/stack_lockfree.c )
   s.files += %w( src/core/lib/support/string.c )
   s.files += %w( src/core/lib/support/string_posix.c )
@@ -149,6 +143,8 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/grpc.h )
   s.files += %w( include/grpc/grpc_posix.h )
   s.files += %w( include/grpc/grpc_security_constants.h )
+  s.files += %w( include/grpc/slice.h )
+  s.files += %w( include/grpc/slice_buffer.h )
   s.files += %w( include/grpc/status.h )
   s.files += %w( include/grpc/impl/codegen/byte_buffer_reader.h )
   s.files += %w( include/grpc/impl/codegen/compression_types.h )
@@ -192,7 +188,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/endpoint_pair.h )
   s.files += %w( src/core/lib/iomgr/error.h )
   s.files += %w( src/core/lib/iomgr/ev_epoll_linux.h )
-  s.files += %w( src/core/lib/iomgr/ev_poll_and_epoll_posix.h )
   s.files += %w( src/core/lib/iomgr/ev_poll_posix.h )
   s.files += %w( src/core/lib/iomgr/ev_posix.h )
   s.files += %w( src/core/lib/iomgr/exec_ctx.h )
@@ -216,6 +211,7 @@ 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_mutator.h )
   s.files += %w( src/core/lib/iomgr/socket_utils.h )
   s.files += %w( src/core/lib/iomgr/socket_utils_posix.h )
   s.files += %w( src/core/lib/iomgr/socket_windows.h )
@@ -242,6 +238,8 @@ 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/percent_encoding.h )
+  s.files += %w( src/core/lib/slice/slice_string_helpers.h )
   s.files += %w( src/core/lib/surface/api_trace.h )
   s.files += %w( src/core/lib/surface/call.h )
   s.files += %w( src/core/lib/surface/call_test_only.h )
@@ -369,7 +367,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/iomgr/endpoint_pair_windows.c )
   s.files += %w( src/core/lib/iomgr/error.c )
   s.files += %w( src/core/lib/iomgr/ev_epoll_linux.c )
-  s.files += %w( src/core/lib/iomgr/ev_poll_and_epoll_posix.c )
   s.files += %w( src/core/lib/iomgr/ev_poll_posix.c )
   s.files += %w( src/core/lib/iomgr/ev_posix.c )
   s.files += %w( src/core/lib/iomgr/exec_ctx.c )
@@ -391,6 +388,7 @@ 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_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 )
   s.files += %w( src/core/lib/iomgr/socket_utils_posix.c )
@@ -424,6 +422,10 @@ 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/percent_encoding.c )
+  s.files += %w( src/core/lib/slice/slice.c )
+  s.files += %w( src/core/lib/slice/slice_buffer.c )
+  s.files += %w( src/core/lib/slice/slice_string_helpers.c )
   s.files += %w( src/core/lib/surface/alarm.c )
   s.files += %w( src/core/lib/surface/api_trace.c )
   s.files += %w( src/core/lib/surface/byte_buffer.c )

include/grpc++/grpc++.h

@@ -67,4 +67,8 @@
 #include <grpc++/server_posix.h>
 // IWYU pragma: end_exports
 
+namespace grpc {
+grpc::string Version();
+}  // namespace grpc
+
 #endif  // GRPCXX_GRPCXX_H

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

@@ -240,7 +240,7 @@ class ServerCompletionQueue : public CompletionQueue {
  private:
   bool is_frequently_polled_;
   friend class ServerBuilder;
-  /// \param is_frequently_polled Informs the GPRC library about whether the
+  /// \param is_frequently_polled Informs the GRPC library about whether the
   /// server completion queue would be actively polled (by calling Next() or
   /// AsyncNext()). By default all server completion queues are assumed to be
   /// frequently polled.

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

@@ -71,16 +71,16 @@ class CoreCodegen : public CoreCodegenInterface {
   void grpc_byte_buffer_reader_destroy(
       grpc_byte_buffer_reader* reader) override;
   int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
-                                   gpr_slice* slice) override;
+                                   grpc_slice* slice) override;
 
-  grpc_byte_buffer* grpc_raw_byte_buffer_create(gpr_slice* slice,
+  grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
                                                 size_t nslices) override;
 
-  gpr_slice gpr_slice_malloc(size_t length) override;
-  void gpr_slice_unref(gpr_slice slice) override;
-  gpr_slice gpr_slice_split_tail(gpr_slice* s, size_t split) override;
-  void gpr_slice_buffer_add(gpr_slice_buffer* sb, gpr_slice slice) override;
-  void gpr_slice_buffer_pop(gpr_slice_buffer* sb) override;
+  grpc_slice grpc_slice_malloc(size_t length) override;
+  void grpc_slice_unref(grpc_slice slice) override;
+  grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) override;
+  void grpc_slice_buffer_add(grpc_slice_buffer* sb, grpc_slice slice) override;
+  void grpc_slice_buffer_pop(grpc_slice_buffer* sb) override;
 
   void grpc_metadata_array_init(grpc_metadata_array* array) override;
   void grpc_metadata_array_destroy(grpc_metadata_array* array) override;

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

@@ -88,16 +88,17 @@ class CoreCodegenInterface {
   virtual void grpc_byte_buffer_reader_destroy(
       grpc_byte_buffer_reader* reader) = 0;
   virtual int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
-                                           gpr_slice* slice) = 0;
+                                           grpc_slice* slice) = 0;
 
-  virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(gpr_slice* slice,
+  virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
                                                         size_t nslices) = 0;
 
-  virtual gpr_slice gpr_slice_malloc(size_t length) = 0;
-  virtual void gpr_slice_unref(gpr_slice slice) = 0;
-  virtual gpr_slice gpr_slice_split_tail(gpr_slice* s, size_t split) = 0;
-  virtual void gpr_slice_buffer_add(gpr_slice_buffer* sb, gpr_slice slice) = 0;
-  virtual void gpr_slice_buffer_pop(gpr_slice_buffer* sb) = 0;
+  virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
+  virtual void grpc_slice_unref(grpc_slice slice) = 0;
+  virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
+  virtual void grpc_slice_buffer_add(grpc_slice_buffer* sb,
+                                     grpc_slice slice) = 0;
+  virtual void grpc_slice_buffer_pop(grpc_slice_buffer* sb) = 0;
 
   virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0;
   virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0;

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

@@ -63,7 +63,7 @@ class GrpcBufferWriter final
 
   ~GrpcBufferWriter() override {
     if (have_backup_) {
-      g_core_codegen_interface->gpr_slice_unref(backup_slice_);
+      g_core_codegen_interface->grpc_slice_unref(backup_slice_);
     }
   }
 
@@ -72,24 +72,24 @@ class GrpcBufferWriter final
       slice_ = backup_slice_;
       have_backup_ = false;
     } else {
-      slice_ = g_core_codegen_interface->gpr_slice_malloc(block_size_);
+      slice_ = g_core_codegen_interface->grpc_slice_malloc(block_size_);
     }
-    *data = GPR_SLICE_START_PTR(slice_);
+    *data = GRPC_SLICE_START_PTR(slice_);
     // On win x64, int is only 32bit
-    GPR_CODEGEN_ASSERT(GPR_SLICE_LENGTH(slice_) <= INT_MAX);
-    byte_count_ += * size = (int)GPR_SLICE_LENGTH(slice_);
-    g_core_codegen_interface->gpr_slice_buffer_add(slice_buffer_, slice_);
+    GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
+    byte_count_ += * size = (int)GRPC_SLICE_LENGTH(slice_);
+    g_core_codegen_interface->grpc_slice_buffer_add(slice_buffer_, slice_);
     return true;
   }
 
   void BackUp(int count) override {
-    g_core_codegen_interface->gpr_slice_buffer_pop(slice_buffer_);
+    g_core_codegen_interface->grpc_slice_buffer_pop(slice_buffer_);
     if (count == block_size_) {
       backup_slice_ = slice_;
     } else {
-      backup_slice_ = g_core_codegen_interface->gpr_slice_split_tail(
-          &slice_, GPR_SLICE_LENGTH(slice_) - count);
-      g_core_codegen_interface->gpr_slice_buffer_add(slice_buffer_, slice_);
+      backup_slice_ = g_core_codegen_interface->grpc_slice_split_tail(
+          &slice_, GRPC_SLICE_LENGTH(slice_) - count);
+      g_core_codegen_interface->grpc_slice_buffer_add(slice_buffer_, slice_);
     }
     have_backup_ = true;
     byte_count_ -= count;
@@ -100,10 +100,10 @@ class GrpcBufferWriter final
  private:
   const int block_size_;
   int64_t byte_count_;
-  gpr_slice_buffer* slice_buffer_;
+  grpc_slice_buffer* slice_buffer_;
   bool have_backup_;
-  gpr_slice backup_slice_;
-  gpr_slice slice_;
+  grpc_slice backup_slice_;
+  grpc_slice slice_;
 };
 
 class GrpcBufferReader final
@@ -126,7 +126,7 @@ class GrpcBufferReader final
       return false;
     }
     if (backup_count_ > 0) {
-      *data = GPR_SLICE_START_PTR(slice_) + GPR_SLICE_LENGTH(slice_) -
+      *data = GRPC_SLICE_START_PTR(slice_) + GRPC_SLICE_LENGTH(slice_) -
               backup_count_;
       GPR_CODEGEN_ASSERT(backup_count_ <= INT_MAX);
       *size = (int)backup_count_;
@@ -137,11 +137,11 @@ class GrpcBufferReader final
                                                                 &slice_)) {
       return false;
     }
-    g_core_codegen_interface->gpr_slice_unref(slice_);
-    *data = GPR_SLICE_START_PTR(slice_);
+    g_core_codegen_interface->grpc_slice_unref(slice_);
+    *data = GRPC_SLICE_START_PTR(slice_);
     // On win x64, int is only 32bit
-    GPR_CODEGEN_ASSERT(GPR_SLICE_LENGTH(slice_) <= INT_MAX);
-    byte_count_ += * size = (int)GPR_SLICE_LENGTH(slice_);
+    GPR_CODEGEN_ASSERT(GRPC_SLICE_LENGTH(slice_) <= INT_MAX);
+    byte_count_ += * size = (int)GRPC_SLICE_LENGTH(slice_);
     return true;
   }
 
@@ -172,7 +172,7 @@ class GrpcBufferReader final
   int64_t byte_count_;
   int64_t backup_count_;
   grpc_byte_buffer_reader reader_;
-  gpr_slice slice_;
+  grpc_slice slice_;
   Status status_;
 };
 }  // namespace internal
@@ -186,12 +186,12 @@ class SerializationTraits<T, typename std::enable_if<std::is_base_of<
     *own_buffer = true;
     int byte_size = msg.ByteSize();
     if (byte_size <= internal::kGrpcBufferWriterMaxBufferLength) {
-      gpr_slice slice = g_core_codegen_interface->gpr_slice_malloc(byte_size);
+      grpc_slice slice = g_core_codegen_interface->grpc_slice_malloc(byte_size);
       GPR_CODEGEN_ASSERT(
-          GPR_SLICE_END_PTR(slice) ==
-          msg.SerializeWithCachedSizesToArray(GPR_SLICE_START_PTR(slice)));
+          GRPC_SLICE_END_PTR(slice) ==
+          msg.SerializeWithCachedSizesToArray(GRPC_SLICE_START_PTR(slice)));
       *bp = g_core_codegen_interface->grpc_raw_byte_buffer_create(&slice, 1);
-      g_core_codegen_interface->gpr_slice_unref(slice);
+      g_core_codegen_interface->grpc_slice_unref(slice);
       return g_core_codegen_interface->ok();
     } else {
       internal::GrpcBufferWriter writer(

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

@@ -109,12 +109,12 @@ class ThriftSerializer {
 
     Serialize(fields, &byte_buffer, &byte_buffer_size);
 
-    gpr_slice slice = gpr_slice_from_copied_buffer(
+    grpc_slice slice = grpc_slice_from_copied_buffer(
         reinterpret_cast<const char*>(byte_buffer), byte_buffer_size);
 
     *bp = grpc_raw_byte_buffer_create(&slice, 1);
 
-    gpr_slice_unref(slice);
+    grpc_slice_unref(slice);
   }
 
   // Deserialize the passed char array into  the passed type, returns the number
@@ -156,12 +156,12 @@ class ThriftSerializer {
     grpc_byte_buffer_reader reader;
     grpc_byte_buffer_reader_init(&reader, buffer);
 
-    gpr_slice slice = grpc_byte_buffer_reader_readall(&reader);
+    grpc_slice slice = grpc_byte_buffer_reader_readall(&reader);
 
     uint32_t len =
-        Deserialize(GPR_SLICE_START_PTR(slice), GPR_SLICE_LENGTH(slice), msg);
+        Deserialize(GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice), msg);
 
-    gpr_slice_unref(slice);
+    grpc_slice_unref(slice);
 
     grpc_byte_buffer_reader_destroy(&reader);
 
@@ -214,4 +214,4 @@ typedef ThriftSerializer<void, TCompactProtocolT<TBufferBase>>
 }  // namespace thrift
 }  // namespace apache
 
-#endif
+#endif  // GRPCXX_IMPL_CODEGEN_THRIFT_SERIALIZER_H

include/grpc++/support/channel_arguments.h

@@ -79,6 +79,9 @@ class ChannelArguments {
   /// Set the compression algorithm for the channel.
   void SetCompressionAlgorithm(grpc_compression_algorithm algorithm);
 
+  /// Set the socket mutator for the channel.
+  void SetSocketMutator(grpc_socket_mutator* mutator);
+
   /// The given string will be sent at the front of the user agent string.
   void SetUserAgentPrefix(const grpc::string& user_agent_prefix);
 

include/grpc++/support/slice.h

@@ -35,11 +35,11 @@
 #define GRPCXX_SUPPORT_SLICE_H
 
 #include <grpc++/support/config.h>
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 
 namespace grpc {
 
-/// A wrapper around \a gpr_slice.
+/// A wrapper around \a grpc_slice.
 ///
 /// A slice represents a contiguous reference counted array of bytes.
 /// It is cheap to take references to a slice, and it is cheap to create a
@@ -53,11 +53,11 @@ class Slice final {
 
   enum AddRef { ADD_REF };
   /// Construct a slice from \a slice, adding a reference.
-  Slice(gpr_slice slice, AddRef);
+  Slice(grpc_slice slice, AddRef);
 
   enum StealRef { STEAL_REF };
   /// Construct a slice from \a slice, stealing a reference.
-  Slice(gpr_slice slice, StealRef);
+  Slice(grpc_slice slice, StealRef);
 
   /// Copy constructor, adds a reference.
   Slice(const Slice& other);
@@ -69,21 +69,21 @@ class Slice final {
   }
 
   /// Byte size.
-  size_t size() const { return GPR_SLICE_LENGTH(slice_); }
+  size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
 
   /// Raw pointer to the beginning (first element) of the slice.
-  const uint8_t* begin() const { return GPR_SLICE_START_PTR(slice_); }
+  const uint8_t* begin() const { return GRPC_SLICE_START_PTR(slice_); }
 
   /// Raw pointer to the end (one byte \em past the last element) of the slice.
-  const uint8_t* end() const { return GPR_SLICE_END_PTR(slice_); }
+  const uint8_t* end() const { return GRPC_SLICE_END_PTR(slice_); }
 
-  /// Raw C slice. Caller needs to call gpr_slice_unref when done.
-  gpr_slice c_slice() const { return gpr_slice_ref(slice_); }
+  /// Raw C slice. Caller needs to call grpc_slice_unref when done.
+  grpc_slice c_slice() const { return grpc_slice_ref(slice_); }
 
  private:
   friend class ByteBuffer;
 
-  gpr_slice slice_;
+  grpc_slice slice_;
 };
 
 }  // namespace grpc

include/grpc/byte_buffer.h

@@ -35,7 +35,7 @@
 #define GRPC_BYTE_BUFFER_H
 
 #include <grpc/impl/codegen/grpc_types.h>
-#include <grpc/support/slice_buffer.h>
+#include <grpc/slice_buffer.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -45,7 +45,7 @@ extern "C" {
  *
  * Increases the reference count for all \a slices processed. The user is
  * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
-GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(gpr_slice *slices,
+GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(grpc_slice *slices,
                                                       size_t nslices);
 
 /** Returns a *compressed* RAW byte buffer instance over the given slices (up to
@@ -55,7 +55,7 @@ GRPCAPI grpc_byte_buffer *grpc_raw_byte_buffer_create(gpr_slice *slices,
  * Increases the reference count for all \a slices processed. The user is
  * responsible for invoking grpc_byte_buffer_destroy on the returned instance.*/
 GRPCAPI grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
-    gpr_slice *slices, size_t nslices, grpc_compression_algorithm compression);
+    grpc_slice *slices, size_t nslices, grpc_compression_algorithm compression);
 
 /** Copies input byte buffer \a bb.
  *
@@ -83,12 +83,12 @@ GRPCAPI void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader);
 
 /** Updates \a slice with the next piece of data from from \a reader and returns
  * 1. Returns 0 at the end of the stream. Caller is responsible for calling
- * gpr_slice_unref on the result. */
+ * grpc_slice_unref on the result. */
 GRPCAPI int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
-                                         gpr_slice *slice);
+                                         grpc_slice *slice);
 
 /** Merge all data from \a reader into single slice */
-GRPCAPI gpr_slice
+GRPCAPI grpc_slice
 grpc_byte_buffer_reader_readall(grpc_byte_buffer_reader *reader);
 
 /** Returns a RAW byte buffer instance from the output of \a reader. */

include/grpc/grpc.h

@@ -40,7 +40,7 @@
 #include <grpc/impl/codegen/connectivity_state.h>
 #include <grpc/impl/codegen/grpc_types.h>
 #include <grpc/impl/codegen/propagation_bits.h>
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include <grpc/support/time.h>
 #include <stddef.h>
 
@@ -237,6 +237,13 @@ GRPCAPI struct census_context *grpc_census_call_get_context(grpc_call *call);
     created for. */
 GRPCAPI char *grpc_channel_get_target(grpc_channel *channel);
 
+/** Request info about the channel.
+    \a channel_info indicates what information is being requested and
+    how that information will be returned.
+    \a channel_info is owned by the caller. */
+GRPCAPI void grpc_channel_get_info(grpc_channel *channel,
+                                   const grpc_channel_info *channel_info);
+
 /** Create a client channel to 'target'. Additional channel level configuration
     MAY be provided by grpc_channel_args, though the expectation is that most
     clients will want to simply pass NULL. See grpc_channel_args definition for

include/grpc/impl/codegen/connectivity_state.h

@@ -40,6 +40,8 @@ extern "C" {
 
 /** Connectivity state of a channel. */
 typedef enum {
+  /** channel has just been initialized */
+  GRPC_CHANNEL_INIT = -1,
   /** channel is idle */
   GRPC_CHANNEL_IDLE,
   /** channel is connecting */

include/grpc/impl/codegen/gpr_types.h

@@ -68,71 +68,6 @@ typedef struct gpr_timespec {
   gpr_clock_type clock_type;
 } gpr_timespec;
 
-/* Slice API
-
-   A slice represents a contiguous reference counted array of bytes.
-   It is cheap to take references to a slice, and it is cheap to create a
-   slice pointing to a subset of another slice.
-
-   The data-structure for slices is exposed here to allow non-gpr code to
-   build slices from whatever data they have available.
-
-   When defining interfaces that handle slices, care should be taken to define
-   reference ownership semantics (who should call unref?) and mutability
-   constraints (is the callee allowed to modify the slice?) */
-
-/* Reference count container for gpr_slice. Contains function pointers to
-   increment and decrement reference counts. Implementations should cleanup
-   when the reference count drops to zero.
-   Typically client code should not touch this, and use gpr_slice_malloc,
-   gpr_slice_new, or gpr_slice_new_with_len instead. */
-typedef struct gpr_slice_refcount {
-  void (*ref)(void *);
-  void (*unref)(void *);
-} gpr_slice_refcount;
-
-#define GPR_SLICE_INLINED_SIZE (sizeof(size_t) + sizeof(uint8_t *) - 1)
-
-/* A gpr_slice s, if initialized, represents the byte range
-   s.bytes[0..s.length-1].
-
-   It can have an associated ref count which has a destruction routine to be run
-   when the ref count reaches zero (see gpr_slice_new() and grp_slice_unref()).
-   Multiple gpr_slice values may share a ref count.
-
-   If the slice does not have a refcount, it represents an inlined small piece
-   of data that is copied by value. */
-typedef struct gpr_slice {
-  struct gpr_slice_refcount *refcount;
-  union {
-    struct {
-      uint8_t *bytes;
-      size_t length;
-    } refcounted;
-    struct {
-      uint8_t length;
-      uint8_t bytes[GPR_SLICE_INLINED_SIZE];
-    } inlined;
-  } data;
-} gpr_slice;
-
-#define GRPC_SLICE_BUFFER_INLINE_ELEMENTS 8
-
-/* Represents an expandable array of slices, to be interpreted as a
-   single item. */
-typedef struct {
-  /* slices in the array */
-  gpr_slice *slices;
-  /* the number of slices in the array */
-  size_t count;
-  /* the number of slices allocated in the array */
-  size_t capacity;
-  /* the combined length of all slices in the array */
-  size_t length;
-  /* inlined elements to avoid allocations */
-  gpr_slice inlined[GRPC_SLICE_BUFFER_INLINE_ELEMENTS];
-} gpr_slice_buffer;
-
 #ifdef __cplusplus
 }
 #endif

include/grpc/impl/codegen/grpc_types.h

@@ -35,6 +35,7 @@
 #define GRPC_IMPL_CODEGEN_GRPC_TYPES_H
 
 #include <grpc/impl/codegen/gpr_types.h>
+#include <grpc/impl/codegen/slice.h>
 
 #include <grpc/impl/codegen/compression_types.h>
 #include <grpc/impl/codegen/status.h>
@@ -60,7 +61,7 @@ typedef struct grpc_byte_buffer {
     } reserved;
     struct {
       grpc_compression_algorithm compression;
-      gpr_slice_buffer slice_buffer;
+      grpc_slice_buffer slice_buffer;
     } raw;
   } data;
 } grpc_byte_buffer;
@@ -83,6 +84,9 @@ typedef struct grpc_server grpc_server;
     can have messages written to it and read from it. */
 typedef struct grpc_call grpc_call;
 
+/** The Socket Mutator interface allows changes on socket options */
+typedef struct grpc_socket_mutator grpc_socket_mutator;
+
 /** Type specifier for grpc_arg */
 typedef enum {
   GRPC_ARG_STRING,
@@ -214,6 +218,8 @@ typedef struct {
 /** Resolved addresses in a form used by the LB policy.
     Not intended for external use. */
 #define GRPC_ARG_LB_ADDRESSES "grpc.lb_addresses"
+/** The grpc_socket_mutator instance that set the socket options. A pointer. */
+#define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
 /** \} */
 
 /** Result of a grpc call. If the caller satisfies the prerequisites of a
@@ -271,9 +277,6 @@ typedef enum grpc_call_error {
 #define GRPC_INITIAL_METADATA_IDEMPOTENT_REQUEST (0x00000010u)
 /** Signal that the call should not return UNAVAILABLE before it has started */
 #define GRPC_INITIAL_METADATA_WAIT_FOR_READY (0x00000020u)
-/** DEPRECATED: for backward compatibility */
-#define GRPC_INITIAL_METADATA_IGNORE_CONNECTIVITY \
-  GRPC_INITIAL_METADATA_WAIT_FOR_READY
 /** Signal that the call is cacheable. GRPC is free to use GET verb */
 #define GRPC_INITIAL_METADATA_CACHEABLE_REQUEST (0x00000040u)
 /** Signal that GRPC_INITIAL_METADATA_WAIT_FOR_READY was explicitly set
@@ -470,6 +473,13 @@ typedef struct grpc_op {
   } data;
 } grpc_op;
 
+/** Information requested from the channel. */
+typedef struct {
+  /* If non-NULL, will be set to point to a string indicating the LB
+   * policy name.  Caller takes ownership. */
+  char **lb_policy_name;
+} grpc_channel_info;
+
 typedef struct grpc_resource_quota grpc_resource_quota;
 
 #ifdef __cplusplus

include/grpc/impl/codegen/port_platform.h

@@ -368,14 +368,14 @@ typedef unsigned __int64 uint64_t;
 #endif
 #endif
 
-#ifndef GPRC_PRINT_FORMAT_CHECK
+#ifndef GPR_PRINT_FORMAT_CHECK
 #ifdef __GNUC__
-#define GPRC_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS) \
+#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS) \
   __attribute__((format(printf, FORMAT_STR, ARGS)))
 #else
-#define GPRC_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS)
+#define GPR_PRINT_FORMAT_CHECK(FORMAT_STR, ARGS)
 #endif
-#endif /* GPRC_PRINT_FORMAT_CHECK */
+#endif /* GPR_PRINT_FORMAT_CHECK */
 
 #if GPR_FORBID_UNREACHABLE_CODE
 #define GPR_UNREACHABLE_CODE(STATEMENT)

include/grpc/impl/codegen/slice.h

@@ -35,18 +35,84 @@
 #define GRPC_IMPL_CODEGEN_SLICE_H
 
 #include <stddef.h>
+#include <stdint.h>
 
-#define GPR_SLICE_START_PTR(slice)                  \
+/* Slice API
+
+   A slice represents a contiguous reference counted array of bytes.
+   It is cheap to take references to a slice, and it is cheap to create a
+   slice pointing to a subset of another slice.
+
+   The data-structure for slices is exposed here to allow non-gpr code to
+   build slices from whatever data they have available.
+
+   When defining interfaces that handle slices, care should be taken to define
+   reference ownership semantics (who should call unref?) and mutability
+   constraints (is the callee allowed to modify the slice?) */
+
+/* Reference count container for grpc_slice. Contains function pointers to
+   increment and decrement reference counts. Implementations should cleanup
+   when the reference count drops to zero.
+   Typically client code should not touch this, and use grpc_slice_malloc,
+   grpc_slice_new, or grpc_slice_new_with_len instead. */
+typedef struct grpc_slice_refcount {
+  void (*ref)(void *);
+  void (*unref)(void *);
+} grpc_slice_refcount;
+
+#define GRPC_SLICE_INLINED_SIZE (sizeof(size_t) + sizeof(uint8_t *) - 1)
+
+/* A grpc_slice s, if initialized, represents the byte range
+   s.bytes[0..s.length-1].
+
+   It can have an associated ref count which has a destruction routine to be run
+   when the ref count reaches zero (see grpc_slice_new() and grp_slice_unref()).
+   Multiple grpc_slice values may share a ref count.
+
+   If the slice does not have a refcount, it represents an inlined small piece
+   of data that is copied by value. */
+typedef struct grpc_slice {
+  struct grpc_slice_refcount *refcount;
+  union {
+    struct {
+      uint8_t *bytes;
+      size_t length;
+    } refcounted;
+    struct {
+      uint8_t length;
+      uint8_t bytes[GRPC_SLICE_INLINED_SIZE];
+    } inlined;
+  } data;
+} grpc_slice;
+
+#define GRPC_SLICE_BUFFER_INLINE_ELEMENTS 8
+
+/* Represents an expandable array of slices, to be interpreted as a
+   single item. */
+typedef struct {
+  /* slices in the array */
+  grpc_slice *slices;
+  /* the number of slices in the array */
+  size_t count;
+  /* the number of slices allocated in the array */
+  size_t capacity;
+  /* the combined length of all slices in the array */
+  size_t length;
+  /* inlined elements to avoid allocations */
+  grpc_slice inlined[GRPC_SLICE_BUFFER_INLINE_ELEMENTS];
+} grpc_slice_buffer;
+
+#define GRPC_SLICE_START_PTR(slice)                 \
   ((slice).refcount ? (slice).data.refcounted.bytes \
                     : (slice).data.inlined.bytes)
-#define GPR_SLICE_LENGTH(slice)                      \
+#define GRPC_SLICE_LENGTH(slice)                     \
   ((slice).refcount ? (slice).data.refcounted.length \
                     : (slice).data.inlined.length)
-#define GPR_SLICE_SET_LENGTH(slice, newlen)                               \
+#define GRPC_SLICE_SET_LENGTH(slice, newlen)                              \
   ((slice).refcount ? ((slice).data.refcounted.length = (size_t)(newlen)) \
                     : ((slice).data.inlined.length = (uint8_t)(newlen)))
-#define GPR_SLICE_END_PTR(slice) \
-  GPR_SLICE_START_PTR(slice) + GPR_SLICE_LENGTH(slice)
-#define GPR_SLICE_IS_EMPTY(slice) (GPR_SLICE_LENGTH(slice) == 0)
+#define GRPC_SLICE_END_PTR(slice) \
+  GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
+#define GRPC_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
 
 #endif /* GRPC_IMPL_CODEGEN_SLICE_H */

include/grpc/support/slice.h → include/grpc/slice.h

@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_SUPPORT_SLICE_H
-#define GRPC_SUPPORT_SLICE_H
+#ifndef GRPC_SLICE_H
+#define GRPC_SLICE_H
 
 #include <grpc/impl/codegen/slice.h>
 #include <grpc/support/sync.h>
@@ -43,90 +43,90 @@ extern "C" {
 
 /* Increment the refcount of s. Requires slice is initialized.
    Returns s. */
-GPRAPI gpr_slice gpr_slice_ref(gpr_slice s);
+GPRAPI grpc_slice grpc_slice_ref(grpc_slice s);
 
 /* Decrement the ref count of s.  If the ref count of s reaches zero, all
    slices sharing the ref count are destroyed, and considered no longer
-   initialized.  If s is ultimately derived from a call to gpr_slice_new(start,
+   initialized.  If s is ultimately derived from a call to grpc_slice_new(start,
    len, dest) where dest!=NULL , then (*dest)(start) is called, else if s is
-   ultimately derived from a call to gpr_slice_new_with_len(start, len, dest)
+   ultimately derived from a call to grpc_slice_new_with_len(start, len, dest)
    where dest!=NULL , then (*dest)(start, len).  Requires s initialized.  */
-GPRAPI void gpr_slice_unref(gpr_slice s);
+GPRAPI void grpc_slice_unref(grpc_slice s);
 
 /* Create a slice pointing at some data. Calls malloc to allocate a refcount
    for the object, and arranges that destroy will be called with the pointer
    passed in at destruction. */
-GPRAPI gpr_slice gpr_slice_new(void *p, size_t len, void (*destroy)(void *));
+GPRAPI grpc_slice grpc_slice_new(void *p, size_t len, void (*destroy)(void *));
 
-/* Equivalent to gpr_slice_new, but with a separate pointer that is
+/* Equivalent to grpc_slice_new, but with a separate pointer that is
    passed to the destroy function.  This function can be useful when
    the data is part of a larger structure that must be destroyed when
    the data is no longer needed. */
-GPRAPI gpr_slice gpr_slice_new_with_user_data(void *p, size_t len,
-                                              void (*destroy)(void *),
-                                              void *user_data);
+GPRAPI grpc_slice grpc_slice_new_with_user_data(void *p, size_t len,
+                                                void (*destroy)(void *),
+                                                void *user_data);
 
-/* Equivalent to gpr_slice_new, but with a two argument destroy function that
+/* Equivalent to grpc_slice_new, but with a two argument destroy function that
    also takes the slice length. */
-GPRAPI gpr_slice gpr_slice_new_with_len(void *p, size_t len,
-                                        void (*destroy)(void *, size_t));
+GPRAPI grpc_slice grpc_slice_new_with_len(void *p, size_t len,
+                                          void (*destroy)(void *, size_t));
 
-/* Equivalent to gpr_slice_new(malloc(len), len, free), but saves one malloc()
+/* Equivalent to grpc_slice_new(malloc(len), len, free), but saves one malloc()
    call.
    Aborts if malloc() fails. */
-GPRAPI gpr_slice gpr_slice_malloc(size_t length);
+GPRAPI grpc_slice grpc_slice_malloc(size_t length);
 
 /* Create a slice by copying a string.
    Does not preserve null terminators.
    Equivalent to:
      size_t len = strlen(source);
-     gpr_slice slice = gpr_slice_malloc(len);
+     grpc_slice slice = grpc_slice_malloc(len);
      memcpy(slice->data, source, len); */
-GPRAPI gpr_slice gpr_slice_from_copied_string(const char *source);
+GPRAPI grpc_slice grpc_slice_from_copied_string(const char *source);
 
 /* Create a slice by copying a buffer.
    Equivalent to:
-     gpr_slice slice = gpr_slice_malloc(len);
+     grpc_slice slice = grpc_slice_malloc(len);
      memcpy(slice->data, source, len); */
-GPRAPI gpr_slice gpr_slice_from_copied_buffer(const char *source, size_t len);
+GPRAPI grpc_slice grpc_slice_from_copied_buffer(const char *source, size_t len);
 
 /* Create a slice pointing to constant memory */
-GPRAPI gpr_slice gpr_slice_from_static_string(const char *source);
+GPRAPI grpc_slice grpc_slice_from_static_string(const char *source);
 
 /* Return a result slice derived from s, which shares a ref count with s, where
    result.data==s.data+begin, and result.length==end-begin.
    The ref count of s is increased by one.
    Requires s initialized, begin <= end, begin <= s.length, and
    end <= source->length. */
-GPRAPI gpr_slice gpr_slice_sub(gpr_slice s, size_t begin, size_t end);
+GPRAPI grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end);
 
-/* The same as gpr_slice_sub, but without altering the ref count */
-GPRAPI gpr_slice gpr_slice_sub_no_ref(gpr_slice s, size_t begin, size_t end);
+/* The same as grpc_slice_sub, but without altering the ref count */
+GPRAPI grpc_slice grpc_slice_sub_no_ref(grpc_slice s, size_t begin, size_t end);
 
 /* Splits s into two: modifies s to be s[0:split], and returns a new slice,
    sharing a refcount with s, that contains s[split:s.length].
    Requires s intialized, split <= s.length */
-GPRAPI gpr_slice gpr_slice_split_tail(gpr_slice *s, size_t split);
+GPRAPI grpc_slice grpc_slice_split_tail(grpc_slice *s, size_t split);
 
 /* Splits s into two: modifies s to be s[split:s.length], and returns a new
    slice, sharing a refcount with s, that contains s[0:split].
    Requires s intialized, split <= s.length */
-GPRAPI gpr_slice gpr_slice_split_head(gpr_slice *s, size_t split);
+GPRAPI grpc_slice grpc_slice_split_head(grpc_slice *s, size_t split);
 
-GPRAPI gpr_slice gpr_empty_slice(void);
+GPRAPI grpc_slice gpr_empty_slice(void);
 
 /* Returns <0 if a < b, ==0 if a == b, >0 if a > b
    The order is arbitrary, and is not guaranteed to be stable across different
    versions of the API. */
-GPRAPI int gpr_slice_cmp(gpr_slice a, gpr_slice b);
-GPRAPI int gpr_slice_str_cmp(gpr_slice a, const char *b);
+GPRAPI int grpc_slice_cmp(grpc_slice a, grpc_slice b);
+GPRAPI int grpc_slice_str_cmp(grpc_slice a, const char *b);
 
 /* Do two slices point at the same memory, with the same length
    If a or b is inlined, actually compares data */
-GPRAPI int gpr_slice_is_equivalent(gpr_slice a, gpr_slice b);
+GPRAPI int grpc_slice_is_equivalent(grpc_slice a, grpc_slice b);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* GRPC_SUPPORT_SLICE_H */
+#endif /* GRPC_SLICE_H */

include/grpc/support/slice_buffer.h → include/grpc/slice_buffer.h

@@ -31,23 +31,23 @@
  *
  */
 
-#ifndef GRPC_SUPPORT_SLICE_BUFFER_H
-#define GRPC_SUPPORT_SLICE_BUFFER_H
+#ifndef GRPC_SLICE_BUFFER_H
+#define GRPC_SLICE_BUFFER_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* initialize a slice buffer */
-GPRAPI void gpr_slice_buffer_init(gpr_slice_buffer *sb);
+GPRAPI void grpc_slice_buffer_init(grpc_slice_buffer *sb);
 /* destroy a slice buffer - unrefs any held elements */
-GPRAPI void gpr_slice_buffer_destroy(gpr_slice_buffer *sb);
+GPRAPI void grpc_slice_buffer_destroy(grpc_slice_buffer *sb);
 /* Add an element to a slice buffer - takes ownership of the slice.
    This function is allowed to concatenate the passed in slice to the end of
    some other slice if desired by the slice buffer. */
-GPRAPI void gpr_slice_buffer_add(gpr_slice_buffer *sb, gpr_slice slice);
+GPRAPI void grpc_slice_buffer_add(grpc_slice_buffer *sb, grpc_slice slice);
 /* add an element to a slice buffer - takes ownership of the slice and returns
    the index of the slice.
    Guarantees that the slice will not be concatenated at the end of another
@@ -55,33 +55,33 @@ GPRAPI void gpr_slice_buffer_add(gpr_slice_buffer *sb, gpr_slice slice);
    slice at the returned index in sb->slices)
    The implementation MAY decide to concatenate data at the end of a small
    slice added in this fashion. */
-GPRAPI size_t gpr_slice_buffer_add_indexed(gpr_slice_buffer *sb,
-                                           gpr_slice slice);
-GPRAPI void gpr_slice_buffer_addn(gpr_slice_buffer *sb, gpr_slice *slices,
-                                  size_t n);
+GPRAPI size_t grpc_slice_buffer_add_indexed(grpc_slice_buffer *sb,
+                                            grpc_slice slice);
+GPRAPI void grpc_slice_buffer_addn(grpc_slice_buffer *sb, grpc_slice *slices,
+                                   size_t n);
 /* add a very small (less than 8 bytes) amount of data to the end of a slice
    buffer: returns a pointer into which to add the data */
-GPRAPI uint8_t *gpr_slice_buffer_tiny_add(gpr_slice_buffer *sb, size_t len);
+GPRAPI uint8_t *grpc_slice_buffer_tiny_add(grpc_slice_buffer *sb, size_t len);
 /* pop the last buffer, but don't unref it */
-GPRAPI void gpr_slice_buffer_pop(gpr_slice_buffer *sb);
+GPRAPI void grpc_slice_buffer_pop(grpc_slice_buffer *sb);
 /* clear a slice buffer, unref all elements */
-GPRAPI void gpr_slice_buffer_reset_and_unref(gpr_slice_buffer *sb);
+GPRAPI void grpc_slice_buffer_reset_and_unref(grpc_slice_buffer *sb);
 /* swap the contents of two slice buffers */
-GPRAPI void gpr_slice_buffer_swap(gpr_slice_buffer *a, gpr_slice_buffer *b);
+GPRAPI void grpc_slice_buffer_swap(grpc_slice_buffer *a, grpc_slice_buffer *b);
 /* move all of the elements of src into dst */
-GPRAPI void gpr_slice_buffer_move_into(gpr_slice_buffer *src,
-                                       gpr_slice_buffer *dst);
+GPRAPI void grpc_slice_buffer_move_into(grpc_slice_buffer *src,
+                                        grpc_slice_buffer *dst);
 /* remove n bytes from the end of a slice buffer */
-GPRAPI void gpr_slice_buffer_trim_end(gpr_slice_buffer *src, size_t n,
-                                      gpr_slice_buffer *garbage);
+GPRAPI void grpc_slice_buffer_trim_end(grpc_slice_buffer *src, size_t n,
+                                       grpc_slice_buffer *garbage);
 /* move the first n bytes of src into dst */
-GPRAPI void gpr_slice_buffer_move_first(gpr_slice_buffer *src, size_t n,
-                                        gpr_slice_buffer *dst);
+GPRAPI void grpc_slice_buffer_move_first(grpc_slice_buffer *src, size_t n,
+                                         grpc_slice_buffer *dst);
 /* take the first slice in the slice buffer */
-GPRAPI gpr_slice gpr_slice_buffer_take_first(gpr_slice_buffer *src);
+GPRAPI grpc_slice grpc_slice_buffer_take_first(grpc_slice_buffer *src);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* GRPC_SUPPORT_SLICE_BUFFER_H */
+#endif /* GRPC_SLICE_BUFFER_H */

include/grpc/support/log.h

@@ -75,7 +75,7 @@ const char *gpr_log_severity_string(gpr_log_severity severity);
 /* Log a message. It's advised to use GPR_xxx above to generate the context
  * for each message */
 GPRAPI void gpr_log(const char *file, int line, gpr_log_severity severity,
-                    const char *format, ...) GPRC_PRINT_FORMAT_CHECK(4, 5);
+                    const char *format, ...) GPR_PRINT_FORMAT_CHECK(4, 5);
 
 GPRAPI void gpr_log_message(const char *file, int line,
                             gpr_log_severity severity, const char *message);

include/grpc/support/string_util.h

@@ -55,7 +55,7 @@ GPRAPI char *gpr_strdup(const char *src);
    On error, returns -1 and sets *strp to NULL. If the format string is bad,
    the result is undefined. */
 GPRAPI int gpr_asprintf(char **strp, const char *format, ...)
-    GPRC_PRINT_FORMAT_CHECK(2, 3);
+    GPR_PRINT_FORMAT_CHECK(2, 3);
 
 #ifdef __cplusplus
 }

package.xml

@@ -64,8 +64,6 @@
     <file baseinstalldir="/" name="include/grpc/support/log.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/log_windows.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/port_platform.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/slice.h" role="src" />
-    <file baseinstalldir="/" name="include/grpc/support/slice_buffer.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/string_util.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/subprocess.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/support/sync.h" role="src" />
@@ -96,7 +94,6 @@
     <file baseinstalldir="/" name="src/core/lib/support/env.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/mpscq.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/murmur_hash.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/percent_encoding.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/stack_lockfree.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string_windows.h" role="src" />
@@ -125,9 +122,6 @@
     <file baseinstalldir="/" name="src/core/lib/support/log_windows.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/mpscq.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/murmur_hash.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/percent_encoding.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/slice.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/support/slice_buffer.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/stack_lockfree.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/support/string_posix.c" role="src" />
@@ -156,6 +150,8 @@
     <file baseinstalldir="/" name="include/grpc/grpc.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_posix.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/grpc_security_constants.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/slice.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/slice_buffer.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/status.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/byte_buffer_reader.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/codegen/compression_types.h" role="src" />
@@ -199,7 +195,6 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/error.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_linux.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_and_epoll_posix.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_posix.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/exec_ctx.h" role="src" />
@@ -223,6 +218,7 @@
     <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_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" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_windows.h" role="src" />
@@ -249,6 +245,8 @@
     <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/percent_encoding.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/slice/slice_string_helpers.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/api_trace.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/call.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/call_test_only.h" role="src" />
@@ -376,7 +374,6 @@
     <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair_windows.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/error.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_linux.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_and_epoll_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/ev_posix.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/exec_ctx.c" role="src" />
@@ -398,6 +395,7 @@
     <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_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" />
     <file baseinstalldir="/" name="src/core/lib/iomgr/socket_utils_posix.c" role="src" />
@@ -431,6 +429,10 @@
     <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/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" />
+    <file baseinstalldir="/" name="src/core/lib/slice/slice_string_helpers.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/alarm.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/api_trace.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/surface/byte_buffer.c" role="src" />

src/core/ext/census/census_log.h

@@ -84,7 +84,7 @@ const void *census_log_read_next(size_t *bytes_available);
 */
 size_t census_log_remaining_space(void);
 
-/* Returns the number of times gprc_stats_log_start_write() failed due to
+/* Returns the number of times grpc_stats_log_start_write() failed due to
    out-of-space. */
 int census_log_out_of_space_count(void);
 

src/core/ext/census/grpc_filter.c

@@ -37,9 +37,9 @@
 #include <string.h>
 
 #include <grpc/census.h>
+#include <grpc/slice.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice.h>
 #include <grpc/support/time.h>
 
 #include "src/core/ext/census/census_interface.h"
@@ -69,7 +69,7 @@ static void extract_and_annotate_method_tag(grpc_metadata_batch *md,
   for (m = md->list.head; m != NULL; m = m->next) {
     if (m->md->key == GRPC_MDSTR_PATH) {
       gpr_log(GPR_DEBUG, "%s",
-              (const char *)GPR_SLICE_START_PTR(m->md->value->slice));
+              (const char *)GRPC_SLICE_START_PTR(m->md->value->slice));
       /* Add method tag here */
     }
   }
@@ -191,6 +191,7 @@ const grpc_channel_filter grpc_client_census_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "census-client"};
 
 const grpc_channel_filter grpc_server_census_filter = {
@@ -204,4 +205,5 @@ const grpc_channel_filter grpc_server_census_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "census-server"};

src/core/ext/census/mlog.h

@@ -88,7 +88,7 @@ const void* census_log_read_next(size_t* bytes_available);
 */
 size_t census_log_remaining_space(void);
 
-/* Returns the number of times gprc_stats_log_start_write() failed due to
+/* Returns the number of times grpc_stats_log_start_write() failed due to
    out-of-space. */
 int64_t census_log_out_of_space_count(void);
 

src/core/ext/census/trace_context.h

@@ -65,4 +65,4 @@ of these do not exist. On success, returns true and false otherwise. */
 bool decode_trace_context(google_trace_TraceContext *ctxt, uint8_t *buffer,
                           const size_t nbytes);
 
-#endif
+#endif /* GRPC_CORE_EXT_CENSUS_TRACE_CONTEXT_H */

src/core/ext/client_channel/client_channel.c

@@ -39,6 +39,7 @@
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
 
@@ -123,6 +124,7 @@ typedef struct client_channel_channel_data {
   /** mutex protecting all variables below in this data structure */
   gpr_mu mu;
   /** currently active load balancer */
+  char *lb_policy_name;
   grpc_lb_policy *lb_policy;
   /** maps method names to method_parameters structs */
   grpc_mdstr_hash_table *method_params_table;
@@ -223,6 +225,7 @@ static void watch_lb_policy(grpc_exec_ctx *exec_ctx, channel_data *chand,
 static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
                                        grpc_error *error) {
   channel_data *chand = arg;
+  char *lb_policy_name = NULL;
   grpc_lb_policy *lb_policy = NULL;
   grpc_lb_policy *old_lb_policy;
   grpc_mdstr_hash_table *method_params_table = NULL;
@@ -236,7 +239,6 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
     lb_policy_args.client_channel_factory = chand->client_channel_factory;
 
     // Find LB policy name.
-    const char *lb_policy_name = NULL;
     const grpc_arg *channel_arg =
         grpc_channel_args_find(lb_policy_args.args, GRPC_ARG_LB_POLICY_NAME);
     if (channel_arg != NULL) {
@@ -289,6 +291,10 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
           (grpc_method_config_table *)channel_arg->value.pointer.p,
           method_config_convert_value, &method_parameters_vtable);
     }
+    // Before we clean up, save a copy of lb_policy_name, since it might
+    // be pointing to data inside chand->resolver_result.
+    // The copy will be saved in chand->lb_policy_name below.
+    lb_policy_name = gpr_strdup(lb_policy_name);
     grpc_channel_args_destroy(chand->resolver_result);
     chand->resolver_result = NULL;
   }
@@ -299,6 +305,10 @@ static void on_resolver_result_changed(grpc_exec_ctx *exec_ctx, void *arg,
   }
 
   gpr_mu_lock(&chand->mu);
+  if (lb_policy_name != NULL) {
+    gpr_free(chand->lb_policy_name);
+    chand->lb_policy_name = lb_policy_name;
+  }
   old_lb_policy = chand->lb_policy;
   chand->lb_policy = lb_policy;
   if (chand->method_params_table != NULL) {
@@ -426,6 +436,19 @@ static void cc_start_transport_op(grpc_exec_ctx *exec_ctx,
   gpr_mu_unlock(&chand->mu);
 }
 
+static void cc_get_channel_info(grpc_exec_ctx *exec_ctx,
+                                grpc_channel_element *elem,
+                                const grpc_channel_info *info) {
+  channel_data *chand = elem->channel_data;
+  gpr_mu_lock(&chand->mu);
+  if (info->lb_policy_name != NULL) {
+    *info->lb_policy_name = chand->lb_policy_name == NULL
+                                ? NULL
+                                : gpr_strdup(chand->lb_policy_name);
+  }
+  gpr_mu_unlock(&chand->mu);
+}
+
 /* Constructor for channel_data */
 static void cc_init_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem,
@@ -465,6 +488,7 @@ static void cc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                      chand->interested_parties);
     GRPC_LB_POLICY_UNREF(exec_ctx, chand->lb_policy, "channel");
   }
+  gpr_free(chand->lb_policy_name);
   if (chand->method_params_table != NULL) {
     grpc_mdstr_hash_table_unref(chand->method_params_table);
   }
@@ -617,7 +641,7 @@ static void subchannel_ready(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_subchannel_call *subchannel_call = NULL;
     grpc_error *new_error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, calld->pollent, calld->path,
-        calld->deadline, &subchannel_call);
+        calld->call_start_time, calld->deadline, &subchannel_call);
     if (new_error != GRPC_ERROR_NONE) {
       new_error = grpc_error_add_child(new_error, error);
       subchannel_call = CANCELLED_CALL;
@@ -870,7 +894,7 @@ retry:
     grpc_subchannel_call *subchannel_call = NULL;
     grpc_error *error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, calld->pollent, calld->path,
-        calld->deadline, &subchannel_call);
+        calld->call_start_time, calld->deadline, &subchannel_call);
     if (error != GRPC_ERROR_NONE) {
       subchannel_call = CANCELLED_CALL;
       fail_locked(exec_ctx, calld, GRPC_ERROR_REF(error));
@@ -1052,6 +1076,7 @@ const grpc_channel_filter grpc_client_channel_filter = {
     cc_init_channel_elem,
     cc_destroy_channel_elem,
     cc_get_peer,
+    cc_get_channel_info,
     "client-channel",
 };
 

src/core/ext/client_channel/connector.h

@@ -52,7 +52,7 @@ typedef struct {
   const grpc_resolved_address *addr;
   size_t addr_len;
   /** initial connect string to send */
-  gpr_slice initial_connect_string;
+  grpc_slice initial_connect_string;
   /** deadline for connection */
   gpr_timespec deadline;
   /** channel arguments (to be passed to transport) */

src/core/ext/client_channel/default_initial_connect_string.c

@@ -31,8 +31,8 @@
  *
  */
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include "src/core/lib/iomgr/resolve_address.h"
 
 void grpc_set_default_initial_connect_string(grpc_resolved_address **addr,
-                                             gpr_slice *initial_str) {}
+                                             grpc_slice *initial_str) {}

src/core/ext/client_channel/http_connect_handshaker.c

@@ -35,9 +35,9 @@
 
 #include <string.h>
 
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/client_channel/uri_parser.h"
@@ -60,8 +60,8 @@ typedef struct http_connect_handshaker {
   void* user_data;
 
   // Objects for processing the HTTP CONNECT request and response.
-  gpr_slice_buffer write_buffer;
-  gpr_slice_buffer* read_buffer;  // Ownership passes through this object.
+  grpc_slice_buffer write_buffer;
+  grpc_slice_buffer* read_buffer;  // Ownership passes through this object.
   grpc_closure request_done_closure;
   grpc_closure response_read_closure;
   grpc_http_parser http_parser;
@@ -76,7 +76,7 @@ static void http_connect_handshaker_unref(http_connect_handshaker* handshaker) {
   if (gpr_unref(&handshaker->refcount)) {
     gpr_free(handshaker->proxy_server);
     gpr_free(handshaker->server_name);
-    gpr_slice_buffer_destroy(&handshaker->write_buffer);
+    grpc_slice_buffer_destroy(&handshaker->write_buffer);
     grpc_http_parser_destroy(&handshaker->http_parser);
     grpc_http_response_destroy(&handshaker->http_response);
     gpr_free(handshaker);
@@ -118,7 +118,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   }
   // Add buffer to parser.
   for (size_t i = 0; i < handshaker->read_buffer->count; ++i) {
-    if (GPR_SLICE_LENGTH(handshaker->read_buffer->slices[i]) > 0) {
+    if (GRPC_SLICE_LENGTH(handshaker->read_buffer->slices[i]) > 0) {
       size_t body_start_offset = 0;
       error = grpc_http_parser_parse(&handshaker->http_parser,
                                      handshaker->read_buffer->slices[i],
@@ -129,20 +129,20 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
         grpc_timer_cancel(exec_ctx, &handshaker->timeout_timer);
         // Remove the data we've already read from the read buffer,
         // leaving only the leftover bytes (if any).
-        gpr_slice_buffer tmp_buffer;
-        gpr_slice_buffer_init(&tmp_buffer);
+        grpc_slice_buffer tmp_buffer;
+        grpc_slice_buffer_init(&tmp_buffer);
         if (body_start_offset <
-            GPR_SLICE_LENGTH(handshaker->read_buffer->slices[i])) {
-          gpr_slice_buffer_add(
+            GRPC_SLICE_LENGTH(handshaker->read_buffer->slices[i])) {
+          grpc_slice_buffer_add(
               &tmp_buffer,
-              gpr_slice_split_tail(&handshaker->read_buffer->slices[i],
-                                   body_start_offset));
+              grpc_slice_split_tail(&handshaker->read_buffer->slices[i],
+                                    body_start_offset));
         }
-        gpr_slice_buffer_addn(&tmp_buffer,
-                              &handshaker->read_buffer->slices[i + 1],
-                              handshaker->read_buffer->count - i - 1);
-        gpr_slice_buffer_swap(handshaker->read_buffer, &tmp_buffer);
-        gpr_slice_buffer_destroy(&tmp_buffer);
+        grpc_slice_buffer_addn(&tmp_buffer,
+                               &handshaker->read_buffer->slices[i + 1],
+                               handshaker->read_buffer->count - i - 1);
+        grpc_slice_buffer_swap(handshaker->read_buffer, &tmp_buffer);
+        grpc_slice_buffer_destroy(&tmp_buffer);
         break;
       }
     }
@@ -159,7 +159,7 @@ static void on_read_done(grpc_exec_ctx* exec_ctx, void* arg,
   // complete (e.g., handling chunked transfer encoding or looking
   // at the Content-Length: header).
   if (handshaker->http_parser.state != GRPC_HTTP_BODY) {
-    gpr_slice_buffer_reset_and_unref(handshaker->read_buffer);
+    grpc_slice_buffer_reset_and_unref(handshaker->read_buffer);
     grpc_endpoint_read(exec_ctx, handshaker->endpoint, handshaker->read_buffer,
                        &handshaker->response_read_closure);
     return;
@@ -195,7 +195,7 @@ static void http_connect_handshaker_shutdown(grpc_exec_ctx* exec_ctx,
 static void http_connect_handshaker_do_handshake(
     grpc_exec_ctx* exec_ctx, grpc_handshaker* handshaker_in,
     grpc_endpoint* endpoint, grpc_channel_args* args,
-    gpr_slice_buffer* read_buffer, gpr_timespec deadline,
+    grpc_slice_buffer* read_buffer, gpr_timespec deadline,
     grpc_tcp_server_acceptor* acceptor, grpc_handshaker_done_cb cb,
     void* user_data) {
   http_connect_handshaker* handshaker = (http_connect_handshaker*)handshaker_in;
@@ -214,8 +214,8 @@ static void http_connect_handshaker_do_handshake(
   request.http.method = "CONNECT";
   request.http.path = handshaker->server_name;
   request.handshaker = &grpc_httpcli_plaintext;
-  gpr_slice request_slice = grpc_httpcli_format_connect_request(&request);
-  gpr_slice_buffer_add(&handshaker->write_buffer, request_slice);
+  grpc_slice request_slice = grpc_httpcli_format_connect_request(&request);
+  grpc_slice_buffer_add(&handshaker->write_buffer, request_slice);
   grpc_endpoint_write(exec_ctx, endpoint, &handshaker->write_buffer,
                       &handshaker->request_done_closure);
   // Set timeout timer.  The timer gets a reference to the handshaker.
@@ -239,7 +239,7 @@ grpc_handshaker* grpc_http_connect_handshaker_create(const char* proxy_server,
   grpc_handshaker_init(&http_connect_handshaker_vtable, &handshaker->base);
   handshaker->proxy_server = gpr_strdup(proxy_server);
   handshaker->server_name = gpr_strdup(server_name);
-  gpr_slice_buffer_init(&handshaker->write_buffer);
+  grpc_slice_buffer_init(&handshaker->write_buffer);
   grpc_closure_init(&handshaker->request_done_closure, on_write_done,
                     handshaker);
   grpc_closure_init(&handshaker->response_read_closure, on_read_done,

src/core/ext/client_channel/initial_connect_string.c

@@ -36,7 +36,7 @@
 #include <stddef.h>
 
 extern void grpc_set_default_initial_connect_string(
-    grpc_resolved_address **addr, gpr_slice *initial_str);
+    grpc_resolved_address **addr, grpc_slice *initial_str);
 
 static grpc_set_initial_connect_string_func g_set_initial_connect_string_func =
     grpc_set_default_initial_connect_string;
@@ -47,6 +47,6 @@ void grpc_test_set_initial_connect_string_function(
 }
 
 void grpc_set_initial_connect_string(grpc_resolved_address **addr,
-                                     gpr_slice *initial_str) {
+                                     grpc_slice *initial_str) {
   g_set_initial_connect_string_func(addr, initial_str);
 }

src/core/ext/client_channel/initial_connect_string.h

@@ -34,17 +34,17 @@
 #ifndef GRPC_CORE_EXT_CLIENT_CHANNEL_INITIAL_CONNECT_STRING_H
 #define GRPC_CORE_EXT_CLIENT_CHANNEL_INITIAL_CONNECT_STRING_H
 
-#include <grpc/support/slice.h>
-
+#include <grpc/slice.h>
 #include "src/core/lib/iomgr/resolve_address.h"
 
 typedef void (*grpc_set_initial_connect_string_func)(
-    grpc_resolved_address **addr, gpr_slice *initial_str);
+    grpc_resolved_address **addr, grpc_slice *initial_str);
+
 void grpc_test_set_initial_connect_string_function(
     grpc_set_initial_connect_string_func func);
 
 /** Set a string to be sent once connected. Optionally reset addr. */
 void grpc_set_initial_connect_string(grpc_resolved_address **addr,
-                                     gpr_slice *connect_string);
+                                     grpc_slice *connect_string);
 
 #endif /* GRPC_CORE_EXT_CLIENT_CHANNEL_INITIAL_CONNECT_STRING_H */

src/core/ext/client_channel/subchannel.c

@@ -100,7 +100,7 @@ struct grpc_subchannel {
   grpc_subchannel_key *key;
 
   /** initial string to send to peer */
-  gpr_slice initial_connect_string;
+  grpc_slice initial_connect_string;
 
   /** set during connection */
   grpc_connect_out_args connecting_result;
@@ -206,7 +206,7 @@ static void subchannel_destroy(grpc_exec_ctx *exec_ctx, void *arg,
   gpr_free((void *)c->filters);
   grpc_channel_args_destroy(c->args);
   gpr_free(c->addr);
-  gpr_slice_unref(c->initial_connect_string);
+  grpc_slice_unref(c->initial_connect_string);
   grpc_connectivity_state_destroy(exec_ctx, &c->state_tracker);
   grpc_connector_unref(exec_ctx, c->connector);
   grpc_pollset_set_destroy(c->pollset_set);
@@ -702,15 +702,15 @@ grpc_connected_subchannel *grpc_subchannel_get_connected_subchannel(
 
 grpc_error *grpc_connected_subchannel_create_call(
     grpc_exec_ctx *exec_ctx, grpc_connected_subchannel *con,
-    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec deadline,
-    grpc_subchannel_call **call) {
+    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec start_time,
+    gpr_timespec deadline, grpc_subchannel_call **call) {
   grpc_channel_stack *chanstk = CHANNEL_STACK_FROM_CONNECTION(con);
   *call = gpr_malloc(sizeof(grpc_subchannel_call) + chanstk->call_stack_size);
   grpc_call_stack *callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call);
   (*call)->connection = con;  // Ref is added below.
   grpc_error *error =
       grpc_call_stack_init(exec_ctx, chanstk, 1, subchannel_call_destroy, *call,
-                           NULL, NULL, path, deadline, callstk);
+                           NULL, NULL, path, start_time, deadline, callstk);
   if (error != GRPC_ERROR_NONE) {
     const char *error_string = grpc_error_string(error);
     gpr_log(GPR_ERROR, "error: %s", error_string);

src/core/ext/client_channel/subchannel.h

@@ -111,8 +111,8 @@ void grpc_subchannel_call_unref(grpc_exec_ctx *exec_ctx,
 /** construct a subchannel call */
 grpc_error *grpc_connected_subchannel_create_call(
     grpc_exec_ctx *exec_ctx, grpc_connected_subchannel *connected_subchannel,
-    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec deadline,
-    grpc_subchannel_call **subchannel_call);
+    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec start_time,
+    gpr_timespec deadline, grpc_subchannel_call **subchannel_call);
 
 /** process a transport level op */
 void grpc_connected_subchannel_process_transport_op(

src/core/ext/client_channel/uri_parser.c

@@ -35,13 +35,14 @@
 
 #include <string.h>
 
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/string_util.h>
 
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 /** a size_t default value... maps to all 1's */
@@ -148,38 +149,38 @@ static void parse_query_parts(grpc_uri *uri) {
     uri->num_query_parts = 0;
     return;
   }
-  gpr_slice query_slice =
-      gpr_slice_new(uri->query, strlen(uri->query), do_nothing);
-  gpr_slice_buffer query_parts; /* the &-separated elements of the query */
-  gpr_slice_buffer query_param_parts; /* the =-separated subelements */
+  grpc_slice query_slice =
+      grpc_slice_new(uri->query, strlen(uri->query), do_nothing);
+  grpc_slice_buffer query_parts; /* the &-separated elements of the query */
+  grpc_slice_buffer query_param_parts; /* the =-separated subelements */
 
-  gpr_slice_buffer_init(&query_parts);
-  gpr_slice_buffer_init(&query_param_parts);
+  grpc_slice_buffer_init(&query_parts);
+  grpc_slice_buffer_init(&query_param_parts);
 
-  gpr_slice_split(query_slice, QUERY_PARTS_SEPARATOR, &query_parts);
+  grpc_slice_split(query_slice, QUERY_PARTS_SEPARATOR, &query_parts);
   uri->query_parts = gpr_malloc(query_parts.count * sizeof(char *));
   uri->query_parts_values = gpr_malloc(query_parts.count * sizeof(char *));
   uri->num_query_parts = query_parts.count;
   for (size_t i = 0; i < query_parts.count; i++) {
-    gpr_slice_split(query_parts.slices[i], QUERY_PARTS_VALUE_SEPARATOR,
-                    &query_param_parts);
+    grpc_slice_split(query_parts.slices[i], QUERY_PARTS_VALUE_SEPARATOR,
+                     &query_param_parts);
     GPR_ASSERT(query_param_parts.count > 0);
     uri->query_parts[i] =
-        gpr_dump_slice(query_param_parts.slices[0], GPR_DUMP_ASCII);
+        grpc_dump_slice(query_param_parts.slices[0], GPR_DUMP_ASCII);
     if (query_param_parts.count > 1) {
       /* TODO(dgq): only the first value after the separator is considered.
        * Perhaps all chars after the first separator for the query part should
        * be included, even if they include the separator. */
       uri->query_parts_values[i] =
-          gpr_dump_slice(query_param_parts.slices[1], GPR_DUMP_ASCII);
+          grpc_dump_slice(query_param_parts.slices[1], GPR_DUMP_ASCII);
     } else {
       uri->query_parts_values[i] = NULL;
     }
-    gpr_slice_buffer_reset_and_unref(&query_param_parts);
+    grpc_slice_buffer_reset_and_unref(&query_param_parts);
   }
-  gpr_slice_buffer_destroy(&query_parts);
-  gpr_slice_buffer_destroy(&query_param_parts);
-  gpr_slice_unref(query_slice);
+  grpc_slice_buffer_destroy(&query_parts);
+  grpc_slice_buffer_destroy(&query_param_parts);
+  grpc_slice_unref(query_slice);
 }
 
 grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) {

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

@@ -116,6 +116,7 @@
 #include "src/core/lib/iomgr/sockaddr.h"
 #include "src/core/lib/iomgr/sockaddr_utils.h"
 #include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/backoff.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/call.h"
@@ -185,6 +186,7 @@ static void wrapped_rr_closure(grpc_exec_ctx *exec_ctx, void *arg,
      * addresses failed to connect). There won't be any user_data/token
      * available */
     if (wc_arg->target != NULL) {
+      GPR_ASSERT(wc_arg->lb_token != NULL);
       initial_metadata_add_lb_token(wc_arg->initial_metadata,
                                     wc_arg->lb_token_mdelem_storage,
                                     GRPC_MDELEM_REF(wc_arg->lb_token));
@@ -604,10 +606,10 @@ static void glb_rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
    * right grpclb status. */
   rr_connectivity_data *rr_conn_data = arg;
   glb_lb_policy *glb_policy = rr_conn_data->glb_policy;
+  gpr_mu_lock(&glb_policy->mu);
 
   if (rr_conn_data->state != GRPC_CHANNEL_SHUTDOWN &&
       !glb_policy->shutting_down) {
-    gpr_mu_lock(&glb_policy->mu);
     /* RR not shutting down. Mimic the RR's policy state */
     grpc_connectivity_state_set(exec_ctx, &glb_policy->state_tracker,
                                 rr_conn_data->state, GRPC_ERROR_REF(error),
@@ -616,12 +618,12 @@ static void glb_rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_lb_policy_notify_on_state_change(exec_ctx, glb_policy->rr_policy,
                                           &rr_conn_data->state,
                                           &rr_conn_data->on_change);
-    gpr_mu_unlock(&glb_policy->mu);
   } else {
     GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
                               "rr_connectivity_cb");
     gpr_free(rr_conn_data);
   }
+  gpr_mu_unlock(&glb_policy->mu);
 }
 
 static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
@@ -756,8 +758,27 @@ static void glb_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   glb_policy->pending_picks = NULL;
   pending_ping *pping = glb_policy->pending_pings;
   glb_policy->pending_pings = NULL;
+  if (glb_policy->rr_policy) {
+    GRPC_LB_POLICY_UNREF(exec_ctx, glb_policy->rr_policy, "glb_shutdown");
+  }
+  grpc_connectivity_state_set(
+      exec_ctx, &glb_policy->state_tracker, GRPC_CHANNEL_SHUTDOWN,
+      GRPC_ERROR_CREATE("Channel Shutdown"), "glb_shutdown");
+  /* We need a copy of the lb_call pointer because we can't cancell the call
+   * while holding glb_policy->mu: lb_on_server_status_received, invoked due to
+   * the cancel, needs to acquire that same lock */
+  grpc_call *lb_call = glb_policy->lb_call;
+  glb_policy->lb_call = NULL;
   gpr_mu_unlock(&glb_policy->mu);
 
+  /* glb_policy->lb_call and this local lb_call must be consistent at this point
+   * because glb_policy->lb_call is only assigned in lb_call_init_locked as part
+   * of query_for_backends_locked, which can only be invoked while
+   * glb_policy->shutting_down is false. */
+  if (lb_call != NULL) {
+    grpc_call_cancel(lb_call, NULL);
+    /* lb_on_server_status_received will pick up the cancel and clean up */
+  }
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
@@ -772,22 +793,6 @@ static void glb_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
                         GRPC_ERROR_NONE, NULL);
     pping = next;
   }
-
-  if (glb_policy->rr_policy) {
-    GRPC_LB_POLICY_UNREF(exec_ctx, glb_policy->rr_policy, "glb_shutdown");
-  }
-
-  if (glb_policy->started_picking) {
-    if (glb_policy->lb_call != NULL) {
-      grpc_call_cancel(glb_policy->lb_call, NULL);
-      /* lb_on_server_status_received will pick up the cancellation and clean up
-       */
-    }
-  }
-
-  grpc_connectivity_state_set(
-      exec_ctx, &glb_policy->state_tracker, GRPC_CHANNEL_SHUTDOWN,
-      GRPC_ERROR_CREATE("Channel Shutdown"), "glb_shutdown");
 }
 
 static void glb_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
@@ -957,9 +962,10 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
                                          grpc_error *error);
 static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error);
-static void lb_call_init(glb_lb_policy *glb_policy) {
+static void lb_call_init_locked(glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->server_name != NULL);
   GPR_ASSERT(glb_policy->server_name[0] != '\0');
+  GPR_ASSERT(!glb_policy->shutting_down);
 
   /* Note the following LB call progresses every time there's activity in \a
    * glb_policy->base.interested_parties, which is comprised of the polling
@@ -975,10 +981,10 @@ static void lb_call_init(glb_lb_policy *glb_policy) {
 
   grpc_grpclb_request *request =
       grpc_grpclb_request_create(glb_policy->server_name);
-  gpr_slice request_payload_slice = grpc_grpclb_request_encode(request);
+  grpc_slice request_payload_slice = grpc_grpclb_request_encode(request);
   glb_policy->lb_request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  gpr_slice_unref(request_payload_slice);
+  grpc_slice_unref(request_payload_slice);
   grpc_grpclb_request_destroy(request);
 
   glb_policy->lb_call_status_details = NULL;
@@ -994,7 +1000,7 @@ static void lb_call_init(glb_lb_policy *glb_policy) {
                    BACKOFF_MAX_SECONDS * 1000);
 }
 
-static void lb_call_destroy(glb_lb_policy *glb_policy) {
+static void lb_call_destroy_locked(glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->lb_call != NULL);
   grpc_call_destroy(glb_policy->lb_call);
   glb_policy->lb_call = NULL;
@@ -1012,7 +1018,9 @@ static void lb_call_destroy(glb_lb_policy *glb_policy) {
 static void query_for_backends_locked(grpc_exec_ctx *exec_ctx,
                                       glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->lb_channel != NULL);
-  lb_call_init(glb_policy);
+  if (glb_policy->shutting_down) return;
+
+  lb_call_init_locked(glb_policy);
 
   if (grpc_lb_glb_trace) {
     gpr_log(GPR_INFO, "Query for backends (grpclb: %p, lb_call: %p)",
@@ -1084,19 +1092,20 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
   grpc_op ops[2];
   memset(ops, 0, sizeof(ops));
   grpc_op *op = ops;
+  gpr_mu_lock(&glb_policy->mu);
   if (glb_policy->lb_response_payload != NULL) {
     gpr_backoff_reset(&glb_policy->lb_call_backoff_state);
     /* Received data from the LB server. Look inside
      * glb_policy->lb_response_payload, for a serverlist. */
     grpc_byte_buffer_reader bbr;
     grpc_byte_buffer_reader_init(&bbr, glb_policy->lb_response_payload);
-    gpr_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+    grpc_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
     grpc_byte_buffer_destroy(glb_policy->lb_response_payload);
     grpc_grpclb_serverlist *serverlist =
         grpc_grpclb_response_parse_serverlist(response_slice);
     if (serverlist != NULL) {
       GPR_ASSERT(glb_policy->lb_call != NULL);
-      gpr_slice_unref(response_slice);
+      grpc_slice_unref(response_slice);
       if (grpc_lb_glb_trace) {
         gpr_log(GPR_INFO, "Serverlist with %lu servers received",
                 (unsigned long)serverlist->num_servers);
@@ -1112,7 +1121,6 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
 
       /* update serverlist */
       if (serverlist->num_servers > 0) {
-        gpr_mu_lock(&glb_policy->mu);
         if (grpc_grpclb_serverlist_equals(glb_policy->serverlist, serverlist)) {
           if (grpc_lb_glb_trace) {
             gpr_log(GPR_INFO,
@@ -1128,7 +1136,6 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
 
           rr_handover_locked(exec_ctx, glb_policy, error);
         }
-        gpr_mu_unlock(&glb_policy->mu);
       } else {
         if (grpc_lb_glb_trace) {
           gpr_log(GPR_INFO,
@@ -1138,8 +1145,8 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
       }
     } else { /* serverlist == NULL */
       gpr_log(GPR_ERROR, "Invalid LB response received: '%s'. Ignoring.",
-              gpr_dump_slice(response_slice, GPR_DUMP_ASCII | GPR_DUMP_HEX));
-      gpr_slice_unref(response_slice);
+              grpc_dump_slice(response_slice, GPR_DUMP_ASCII | GPR_DUMP_HEX));
+      grpc_slice_unref(response_slice);
     }
 
     if (!glb_policy->shutting_down) {
@@ -1156,9 +1163,11 @@ static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
           &glb_policy->lb_on_response_received); /* loop */
       GPR_ASSERT(GRPC_CALL_OK == call_error);
     }
+    gpr_mu_unlock(&glb_policy->mu);
   } else { /* empty payload: call cancelled. */
            /* dispose of the "lb_on_response_received" weak ref taken in
             * query_for_backends_locked() and reused in every reception loop */
+    gpr_mu_unlock(&glb_policy->mu);
     GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
                               "lb_on_response_received_empty_payload");
   }
@@ -1178,7 +1187,6 @@ static void lb_call_on_retry_timer(grpc_exec_ctx *exec_ctx, void *arg,
     query_for_backends_locked(exec_ctx, glb_policy);
   }
   gpr_mu_unlock(&glb_policy->mu);
-
   GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &glb_policy->base,
                             "grpclb_on_retry_timer");
 }
@@ -1199,7 +1207,7 @@ static void lb_on_server_status_received(grpc_exec_ctx *exec_ctx, void *arg,
   }
 
   /* We need to performe cleanups no matter what. */
-  lb_call_destroy(glb_policy);
+  lb_call_destroy_locked(glb_policy);
 
   if (!glb_policy->shutting_down) {
     /* if we aren't shutting down, restart the LB client call after some time */

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

@@ -90,18 +90,18 @@ grpc_grpclb_request *grpc_grpclb_request_create(const char *lb_service_name) {
   return req;
 }
 
-gpr_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request) {
+grpc_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request) {
   size_t encoded_length;
   pb_ostream_t sizestream;
   pb_ostream_t outputstream;
-  gpr_slice slice;
+  grpc_slice slice;
   memset(&sizestream, 0, sizeof(pb_ostream_t));
   pb_encode(&sizestream, grpc_lb_v1_LoadBalanceRequest_fields, request);
   encoded_length = sizestream.bytes_written;
 
-  slice = gpr_slice_malloc(encoded_length);
+  slice = grpc_slice_malloc(encoded_length);
   outputstream =
-      pb_ostream_from_buffer(GPR_SLICE_START_PTR(slice), encoded_length);
+      pb_ostream_from_buffer(GRPC_SLICE_START_PTR(slice), encoded_length);
   GPR_ASSERT(pb_encode(&outputstream, grpc_lb_v1_LoadBalanceRequest_fields,
                        request) != 0);
   return slice;
@@ -113,10 +113,10 @@ void grpc_grpclb_request_destroy(grpc_grpclb_request *request) {
 
 typedef grpc_lb_v1_LoadBalanceResponse grpc_grpclb_response;
 grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
-    gpr_slice encoded_grpc_grpclb_response) {
+    grpc_slice encoded_grpc_grpclb_response) {
   pb_istream_t stream =
-      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_grpc_grpclb_response),
-                             GPR_SLICE_LENGTH(encoded_grpc_grpclb_response));
+      pb_istream_from_buffer(GRPC_SLICE_START_PTR(encoded_grpc_grpclb_response),
+                             GRPC_SLICE_LENGTH(encoded_grpc_grpclb_response));
   grpc_grpclb_response res;
   memset(&res, 0, sizeof(grpc_grpclb_response));
   if (!pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, &res)) {
@@ -132,12 +132,12 @@ grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
 }
 
 grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
-    gpr_slice encoded_grpc_grpclb_response) {
+    grpc_slice encoded_grpc_grpclb_response) {
   bool status;
   decode_serverlist_arg arg;
   pb_istream_t stream =
-      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_grpc_grpclb_response),
-                             GPR_SLICE_LENGTH(encoded_grpc_grpclb_response));
+      pb_istream_from_buffer(GRPC_SLICE_START_PTR(encoded_grpc_grpclb_response),
+                             GRPC_SLICE_LENGTH(encoded_grpc_grpclb_response));
   pb_istream_t stream_at_start = stream;
   grpc_grpclb_response res;
   memset(&res, 0, sizeof(grpc_grpclb_response));

src/core/ext/lb_policy/grpclb/load_balancer_api.h

@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_EXT_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
 #define GRPC_CORE_EXT_LB_POLICY_GRPCLB_LOAD_BALANCER_API_H
 
-#include <grpc/support/slice_buffer.h>
+#include <grpc/slice_buffer.h>
 
 #include "src/core/ext/client_channel/lb_policy_factory.h"
 #include "src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h"
@@ -60,7 +60,7 @@ typedef struct grpc_grpclb_serverlist {
 grpc_grpclb_request *grpc_grpclb_request_create(const char *lb_service_name);
 
 /** Protocol Buffers v3-encode \a request */
-gpr_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request);
+grpc_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request);
 
 /** Destroy \a request */
 void grpc_grpclb_request_destroy(grpc_grpclb_request *request);
@@ -68,11 +68,11 @@ void grpc_grpclb_request_destroy(grpc_grpclb_request *request);
 /** Parse (ie, decode) the bytes in \a encoded_grpc_grpclb_response as a \a
  * grpc_grpclb_initial_response */
 grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
-    gpr_slice encoded_grpc_grpclb_response);
+    grpc_slice encoded_grpc_grpclb_response);
 
 /** Parse the list of servers from an encoded \a grpc_grpclb_response */
 grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
-    gpr_slice encoded_grpc_grpclb_response);
+    grpc_slice encoded_grpc_grpclb_response);
 
 /** Return a copy of \a sl. The caller is responsible for calling \a
  * grpc_grpclb_destroy_serverlist on the returned copy. */

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

@@ -292,6 +292,8 @@ static void pf_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
   } else {
   loop:
     switch (p->checking_connectivity) {
+      case GRPC_CHANNEL_INIT:
+        GPR_UNREACHABLE_CODE(return );
       case GRPC_CHANNEL_READY:
         grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
                                     GRPC_CHANNEL_READY, GRPC_ERROR_NONE,

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

@@ -116,8 +116,13 @@ typedef struct {
   grpc_closure connectivity_changed_closure;
   /** this subchannels current position in subchannel->ready_list */
   ready_list *ready_list_node;
-  /** last observed connectivity */
-  grpc_connectivity_state connectivity_state;
+  /** last observed connectivity. Not updated by
+   * \a grpc_subchannel_notify_on_state_change. Used to determine the previous
+   * state while processing the new state in \a rr_connectivity_changed */
+  grpc_connectivity_state prev_connectivity_state;
+  /** current connectivity state. Updated by \a
+   * grpc_subchannel_notify_on_state_change */
+  grpc_connectivity_state curr_connectivity_state;
   /** the subchannel's target user data */
   void *user_data;
   /** vtable to operate over \a user_data */
@@ -127,6 +132,7 @@ typedef struct {
 struct round_robin_lb_policy {
   /** base policy: must be first */
   grpc_lb_policy base;
+  gpr_mu mu;
 
   /** total number of addresses received at creation time */
   size_t num_addresses;
@@ -135,8 +141,11 @@ struct round_robin_lb_policy {
   size_t num_subchannels;
   subchannel_data **subchannels;
 
-  /** mutex protecting remaining members */
-  gpr_mu mu;
+  /** how many subchannels are in TRANSIENT_FAILURE */
+  size_t num_transient_failures;
+  /** how many subchannels are IDLE */
+  size_t num_idle;
+
   /** have we started picking? */
   int started_picking;
   /** are we shutting down? */
@@ -258,6 +267,10 @@ static void remove_disconnected_sc_locked(round_robin_lb_policy *p,
   gpr_free(node);
 }
 
+static bool is_ready_list_empty(round_robin_lb_policy *p) {
+  return p->ready_list.prev == NULL;
+}
+
 static void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
   round_robin_lb_policy *p = (round_robin_lb_policy *)pol;
   ready_list *elem;
@@ -268,7 +281,7 @@ static void rr_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
 
   for (size_t i = 0; i < p->num_subchannels; i++) {
     subchannel_data *sd = p->subchannels[i];
-    GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "round_robin_destroy");
+    GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "rr_destroy");
     if (sd->user_data != NULL) {
       GPR_ASSERT(sd->user_data_vtable != NULL);
       sd->user_data_vtable->destroy(sd->user_data);
@@ -381,18 +394,18 @@ static void start_picking(grpc_exec_ctx *exec_ctx, round_robin_lb_policy *p) {
   size_t i;
   p->started_picking = 1;
 
-  if (grpc_lb_round_robin_trace) {
-    gpr_log(GPR_DEBUG, "LB_POLICY: p=%p num_subchannels=%" PRIuPTR, (void *)p,
-            p->num_subchannels);
-  }
-
   for (i = 0; i < p->num_subchannels; i++) {
     subchannel_data *sd = p->subchannels[i];
-    sd->connectivity_state = GRPC_CHANNEL_IDLE;
+    /* use some sentinel value outside of the range of grpc_connectivity_state
+     * to signal an undefined previous state. We won't be referring to this
+     * value again and it'll be overwritten after the first call to
+     * rr_connectivity_changed */
+    sd->prev_connectivity_state = GRPC_CHANNEL_INIT;
+    sd->curr_connectivity_state = GRPC_CHANNEL_IDLE;
+    GRPC_LB_POLICY_WEAK_REF(&p->base, "rr_connectivity");
     grpc_subchannel_notify_on_state_change(
         exec_ctx, sd->subchannel, p->base.interested_parties,
-        &sd->connectivity_state, &sd->connectivity_changed_closure);
-    GRPC_LB_POLICY_WEAK_REF(&p->base, "round_robin_connectivity");
+        &sd->curr_connectivity_state, &sd->connectivity_changed_closure);
   }
 }
 
@@ -422,7 +435,7 @@ static int rr_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     /* readily available, report right away */
     *target = GRPC_CONNECTED_SUBCHANNEL_REF(
         grpc_subchannel_get_connected_subchannel(selected->subchannel),
-        "picked");
+        "rr_picked");
 
     if (user_data != NULL) {
       *user_data = selected->user_data;
@@ -453,125 +466,184 @@ static int rr_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
   }
 }
 
+static void update_state_counters(subchannel_data *sd) {
+  round_robin_lb_policy *p = sd->policy;
+
+  /* update p->num_transient_failures (resp. p->num_idle): if the previous
+   * state was TRANSIENT_FAILURE (resp. IDLE), decrement
+   * p->num_transient_failures (resp. p->num_idle). */
+  if (sd->prev_connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
+    GPR_ASSERT(p->num_transient_failures > 0);
+    --p->num_transient_failures;
+  } else if (sd->prev_connectivity_state == GRPC_CHANNEL_IDLE) {
+    GPR_ASSERT(p->num_idle > 0);
+    --p->num_idle;
+  }
+}
+
+/* sd is the subchannel_data associted with the updated subchannel.
+ * shutdown_error will only be used upon policy transition to TRANSIENT_FAILURE
+ * or SHUTDOWN */
+static grpc_connectivity_state update_lb_connectivity_status(
+    grpc_exec_ctx *exec_ctx, subchannel_data *sd, grpc_error *error) {
+  /* In priority order. The first rule to match terminates the search (ie, if we
+   * are on rule n, all previous rules were unfulfilled).
+   *
+   * 1) RULE: ANY subchannel is READY => policy is READY.
+   *    CHECK: At least one subchannel is ready iff p->ready_list is NOT empty.
+   *
+   * 2) RULE: ANY subchannel is CONNECTING => policy is CONNECTING.
+   *    CHECK: sd->curr_connectivity_state == CONNECTING.
+   *
+   * 3) RULE: ALL subchannels are SHUTDOWN => policy is SHUTDOWN.
+   *    CHECK: p->num_subchannels = 0.
+   *
+   * 4) RULE: ALL subchannels are TRANSIENT_FAILURE => policy is
+   *    TRANSIENT_FAILURE.
+   *    CHECK: p->num_transient_failures == p->num_subchannels.
+   *
+   * 5) RULE: ALL subchannels are IDLE => policy is IDLE.
+   *    CHECK: p->num_idle == p->num_subchannels.
+   */
+  round_robin_lb_policy *p = sd->policy;
+  if (!is_ready_list_empty(p)) { /* 1) READY */
+    grpc_connectivity_state_set(exec_ctx, &p->state_tracker, GRPC_CHANNEL_READY,
+                                GRPC_ERROR_NONE, "rr_ready");
+    return GRPC_CHANNEL_READY;
+  } else if (sd->curr_connectivity_state ==
+             GRPC_CHANNEL_CONNECTING) { /* 2) CONNECTING */
+    grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
+                                GRPC_CHANNEL_CONNECTING, GRPC_ERROR_NONE,
+                                "rr_connecting");
+    return GRPC_CHANNEL_CONNECTING;
+  } else if (p->num_subchannels == 0) { /* 3) SHUTDOWN */
+    grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
+                                GRPC_CHANNEL_SHUTDOWN, GRPC_ERROR_REF(error),
+                                "rr_shutdown");
+    return GRPC_CHANNEL_SHUTDOWN;
+  } else if (p->num_transient_failures ==
+             p->num_subchannels) { /* 4) TRANSIENT_FAILURE */
+    grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
+                                GRPC_CHANNEL_TRANSIENT_FAILURE,
+                                GRPC_ERROR_REF(error), "rr_transient_failure");
+    return GRPC_CHANNEL_TRANSIENT_FAILURE;
+  } else if (p->num_idle == p->num_subchannels) { /* 5) IDLE */
+    grpc_connectivity_state_set(exec_ctx, &p->state_tracker, GRPC_CHANNEL_IDLE,
+                                GRPC_ERROR_NONE, "rr_idle");
+    return GRPC_CHANNEL_IDLE;
+  }
+  /* no change */
+  return sd->curr_connectivity_state;
+}
+
 static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error) {
   subchannel_data *sd = arg;
   round_robin_lb_policy *p = sd->policy;
   pending_pick *pp;
 
-  int unref = 0;
-
   GRPC_ERROR_REF(error);
   gpr_mu_lock(&p->mu);
 
   if (p->shutdown) {
-    unref = 1;
-  } else {
-    switch (sd->connectivity_state) {
-      case GRPC_CHANNEL_READY:
-        grpc_connectivity_state_set(exec_ctx, &p->state_tracker,
-                                    GRPC_CHANNEL_READY, GRPC_ERROR_REF(error),
-                                    "connecting_ready");
-        /* add the newly connected subchannel to the list of connected ones.
-         * Note that it goes to the "end of the line". */
-        sd->ready_list_node = add_connected_sc_locked(p, sd);
-        /* at this point we know there's at least one suitable subchannel. Go
-         * ahead and pick one and notify the pending suitors in
-         * p->pending_picks. This preemtively replicates rr_pick()'s actions. */
-        ready_list *selected = peek_next_connected_locked(p);
-        GPR_ASSERT(selected != NULL);
-        if (p->pending_picks != NULL) {
-          /* if the selected subchannel is going to be used for the pending
-           * picks, update the last picked pointer */
-          advance_last_picked_locked(p);
+    gpr_mu_unlock(&p->mu);
+    GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "rr_connectivity");
+    GRPC_ERROR_UNREF(error);
+    return;
+  }
+  switch (sd->curr_connectivity_state) {
+    case GRPC_CHANNEL_INIT:
+      GPR_UNREACHABLE_CODE(return );
+    case GRPC_CHANNEL_READY:
+      /* add the newly connected subchannel to the list of connected ones.
+       * Note that it goes to the "end of the line". */
+      sd->ready_list_node = add_connected_sc_locked(p, sd);
+      /* at this point we know there's at least one suitable subchannel. Go
+       * ahead and pick one and notify the pending suitors in
+       * p->pending_picks. This preemtively replicates rr_pick()'s actions. */
+      ready_list *selected = peek_next_connected_locked(p);
+      GPR_ASSERT(selected != NULL);
+      if (p->pending_picks != NULL) {
+        /* if the selected subchannel is going to be used for the pending
+         * picks, update the last picked pointer */
+        advance_last_picked_locked(p);
+      }
+      while ((pp = p->pending_picks)) {
+        p->pending_picks = pp->next;
+        *pp->target = GRPC_CONNECTED_SUBCHANNEL_REF(
+            grpc_subchannel_get_connected_subchannel(selected->subchannel),
+            "rr_picked");
+        if (pp->user_data != NULL) {
+          *pp->user_data = selected->user_data;
         }
-
+        if (grpc_lb_round_robin_trace) {
+          gpr_log(GPR_DEBUG,
+                  "[RR CONN CHANGED] TARGET <-- SUBCHANNEL %p (NODE %p)",
+                  (void *)selected->subchannel, (void *)selected);
+        }
+        grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
+        gpr_free(pp);
+      }
+      update_lb_connectivity_status(exec_ctx, sd, error);
+      sd->prev_connectivity_state = sd->curr_connectivity_state;
+      /* renew notification: reuses the "rr_connectivity" weak ref */
+      grpc_subchannel_notify_on_state_change(
+          exec_ctx, sd->subchannel, p->base.interested_parties,
+          &sd->curr_connectivity_state, &sd->connectivity_changed_closure);
+      break;
+    case GRPC_CHANNEL_IDLE:
+      ++p->num_idle;
+    /* fallthrough */
+    case GRPC_CHANNEL_CONNECTING:
+      update_state_counters(sd);
+      update_lb_connectivity_status(exec_ctx, sd, error);
+      sd->prev_connectivity_state = sd->curr_connectivity_state;
+      /* renew notification: reuses the "rr_connectivity" weak ref */
+      grpc_subchannel_notify_on_state_change(
+          exec_ctx, sd->subchannel, p->base.interested_parties,
+          &sd->curr_connectivity_state, &sd->connectivity_changed_closure);
+      break;
+    case GRPC_CHANNEL_TRANSIENT_FAILURE:
+      ++p->num_transient_failures;
+      /* remove from ready list if still present */
+      if (sd->ready_list_node != NULL) {
+        remove_disconnected_sc_locked(p, sd->ready_list_node);
+        sd->ready_list_node = NULL;
+      }
+      update_lb_connectivity_status(exec_ctx, sd, error);
+      sd->prev_connectivity_state = sd->curr_connectivity_state;
+      /* renew notification: reuses the "rr_connectivity" weak ref */
+      grpc_subchannel_notify_on_state_change(
+          exec_ctx, sd->subchannel, p->base.interested_parties,
+          &sd->curr_connectivity_state, &sd->connectivity_changed_closure);
+      break;
+    case GRPC_CHANNEL_SHUTDOWN:
+      update_state_counters(sd);
+      if (sd->ready_list_node != NULL) {
+        remove_disconnected_sc_locked(p, sd->ready_list_node);
+        sd->ready_list_node = NULL;
+      }
+      --p->num_subchannels;
+      GPR_SWAP(subchannel_data *, p->subchannels[sd->index],
+               p->subchannels[p->num_subchannels]);
+      GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "rr_subchannel_shutdown");
+      p->subchannels[sd->index]->index = sd->index;
+      if (update_lb_connectivity_status(exec_ctx, sd, error) ==
+          GRPC_CHANNEL_SHUTDOWN) {
+        /* the policy is shutting down. Flush all the pending picks... */
         while ((pp = p->pending_picks)) {
           p->pending_picks = pp->next;
-
-          *pp->target = GRPC_CONNECTED_SUBCHANNEL_REF(
-              grpc_subchannel_get_connected_subchannel(selected->subchannel),
-              "picked");
-          if (pp->user_data != NULL) {
-            *pp->user_data = selected->user_data;
-          }
-          if (grpc_lb_round_robin_trace) {
-            gpr_log(GPR_DEBUG,
-                    "[RR CONN CHANGED] TARGET <-- SUBCHANNEL %p (NODE %p)",
-                    (void *)selected->subchannel, (void *)selected);
-          }
+          *pp->target = NULL;
           grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE, NULL);
           gpr_free(pp);
         }
-        grpc_subchannel_notify_on_state_change(
-            exec_ctx, sd->subchannel, p->base.interested_parties,
-            &sd->connectivity_state, &sd->connectivity_changed_closure);
-        break;
-      case GRPC_CHANNEL_CONNECTING:
-      case GRPC_CHANNEL_IDLE:
-        grpc_connectivity_state_set(
-            exec_ctx, &p->state_tracker, sd->connectivity_state,
-            GRPC_ERROR_REF(error), "connecting_changed");
-        grpc_subchannel_notify_on_state_change(
-            exec_ctx, sd->subchannel, p->base.interested_parties,
-            &sd->connectivity_state, &sd->connectivity_changed_closure);
-        break;
-      case GRPC_CHANNEL_TRANSIENT_FAILURE:
-        /* renew state notification */
-        grpc_subchannel_notify_on_state_change(
-            exec_ctx, sd->subchannel, p->base.interested_parties,
-            &sd->connectivity_state, &sd->connectivity_changed_closure);
-
-        /* remove from ready list if still present */
-        if (sd->ready_list_node != NULL) {
-          remove_disconnected_sc_locked(p, sd->ready_list_node);
-          sd->ready_list_node = NULL;
-        }
-        grpc_connectivity_state_set(
-            exec_ctx, &p->state_tracker, GRPC_CHANNEL_TRANSIENT_FAILURE,
-            GRPC_ERROR_REF(error), "connecting_transient_failure");
-        break;
-      case GRPC_CHANNEL_SHUTDOWN:
-        if (sd->ready_list_node != NULL) {
-          remove_disconnected_sc_locked(p, sd->ready_list_node);
-          sd->ready_list_node = NULL;
-        }
-
-        p->num_subchannels--;
-        GPR_SWAP(subchannel_data *, p->subchannels[sd->index],
-                 p->subchannels[p->num_subchannels]);
-        GRPC_SUBCHANNEL_UNREF(exec_ctx, sd->subchannel, "round_robin");
-        p->subchannels[sd->index]->index = sd->index;
-        gpr_free(sd);
-
-        unref = 1;
-        if (p->num_subchannels == 0) {
-          grpc_connectivity_state_set(
-              exec_ctx, &p->state_tracker, GRPC_CHANNEL_SHUTDOWN,
-              GRPC_ERROR_CREATE_REFERENCING("Round Robin Channels Exhausted",
-                                            &error, 1),
-              "no_more_channels");
-          while ((pp = p->pending_picks)) {
-            p->pending_picks = pp->next;
-            *pp->target = NULL;
-            grpc_exec_ctx_sched(exec_ctx, pp->on_complete, GRPC_ERROR_NONE,
-                                NULL);
-            gpr_free(pp);
-          }
-        } else {
-          grpc_connectivity_state_set(
-              exec_ctx, &p->state_tracker, GRPC_CHANNEL_TRANSIENT_FAILURE,
-              GRPC_ERROR_REF(error), "subchannel_failed");
-        }
-    } /* switch */
-  }   /* !unref */
-
-  gpr_mu_unlock(&p->mu);
-
-  if (unref) {
-    GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "round_robin_connectivity");
+      }
+      gpr_free(sd);
+      /* unref the "rr_connectivity" weak ref from start_picking */
+      GRPC_LB_POLICY_WEAK_UNREF(exec_ctx, &p->base, "rr_connectivity");
+      break;
   }
-
+  gpr_mu_unlock(&p->mu);
   GRPC_ERROR_UNREF(error);
 }
 
@@ -607,9 +679,9 @@ static void rr_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
     gpr_mu_unlock(&p->mu);
     target = GRPC_CONNECTED_SUBCHANNEL_REF(
         grpc_subchannel_get_connected_subchannel(selected->subchannel),
-        "picked");
+        "rr_picked");
     grpc_connected_subchannel_ping(exec_ctx, target, closure);
-    GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, target, "picked");
+    GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, target, "rr_picked");
   } else {
     gpr_mu_unlock(&p->mu);
     grpc_exec_ctx_sched(exec_ctx, closure,
@@ -705,6 +777,11 @@ static grpc_lb_policy *round_robin_create(grpc_exec_ctx *exec_ctx,
   grpc_lb_policy_init(&p->base, &round_robin_lb_policy_vtable);
   grpc_connectivity_state_init(&p->state_tracker, GRPC_CHANNEL_IDLE,
                                "round_robin");
+
+  if (grpc_lb_round_robin_trace) {
+    gpr_log(GPR_DEBUG, "Created RR policy at %p with %lu subchannels",
+            (void *)p, (unsigned long)p->num_subchannels);
+  }
   gpr_mu_init(&p->mu);
   return &p->base;
 }

src/core/ext/load_reporting/load_reporting_filter.c

@@ -232,4 +232,5 @@ const grpc_channel_filter grpc_load_reporting_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "load_reporting"};

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

@@ -47,6 +47,7 @@
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 typedef struct {
@@ -169,17 +170,17 @@ static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
     return NULL;
   }
   /* Construct addresses. */
-  gpr_slice path_slice =
-      gpr_slice_new(args->uri->path, strlen(args->uri->path), do_nothing);
-  gpr_slice_buffer path_parts;
-  gpr_slice_buffer_init(&path_parts);
-  gpr_slice_split(path_slice, ",", &path_parts);
+  grpc_slice path_slice =
+      grpc_slice_new(args->uri->path, strlen(args->uri->path), do_nothing);
+  grpc_slice_buffer path_parts;
+  grpc_slice_buffer_init(&path_parts);
+  grpc_slice_split(path_slice, ",", &path_parts);
   grpc_lb_addresses *addresses =
       grpc_lb_addresses_create(path_parts.count, NULL /* user_data_vtable */);
   bool errors_found = false;
   for (size_t i = 0; i < addresses->num_addresses; i++) {
     grpc_uri ith_uri = *args->uri;
-    char *part_str = gpr_dump_slice(path_parts.slices[i], GPR_DUMP_ASCII);
+    char *part_str = grpc_dump_slice(path_parts.slices[i], GPR_DUMP_ASCII);
     ith_uri.path = part_str;
     if (!parse(&ith_uri, &addresses->addresses[i].address)) {
       errors_found = true; /* GPR_TRUE */
@@ -187,8 +188,8 @@ static grpc_resolver *sockaddr_create(grpc_resolver_args *args,
     gpr_free(part_str);
     if (errors_found) break;
   }
-  gpr_slice_buffer_destroy(&path_parts);
-  gpr_slice_unref(path_slice);
+  grpc_slice_buffer_destroy(&path_parts);
+  grpc_slice_unref(path_slice);
   if (errors_found) {
     grpc_lb_addresses_destroy(addresses);
     return NULL;

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

@@ -36,9 +36,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
 #include "src/core/ext/client_channel/http_connect_handshaker.h"
@@ -64,7 +64,7 @@ typedef struct {
   grpc_connect_in_args args;
   grpc_connect_out_args *result;
   grpc_closure initial_string_sent;
-  gpr_slice_buffer initial_string_buffer;
+  grpc_slice_buffer initial_string_buffer;
 
   grpc_endpoint *tcp;
 
@@ -94,7 +94,7 @@ static void on_initial_connect_string_sent(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, grpc_endpoint *endpoint,
                               grpc_channel_args *args,
-                              gpr_slice_buffer *read_buffer, void *user_data,
+                              grpc_slice_buffer *read_buffer, void *user_data,
                               grpc_error *error) {
   connector *c = user_data;
   if (error != GRPC_ERROR_NONE) {
@@ -117,12 +117,12 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
   connector *c = arg;
   grpc_endpoint *tcp = c->tcp;
   if (tcp != NULL) {
-    if (!GPR_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
+    if (!GRPC_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
       grpc_closure_init(&c->initial_string_sent, on_initial_connect_string_sent,
                         c);
-      gpr_slice_buffer_init(&c->initial_string_buffer);
-      gpr_slice_buffer_add(&c->initial_string_buffer,
-                           c->args.initial_connect_string);
+      grpc_slice_buffer_init(&c->initial_string_buffer);
+      grpc_slice_buffer_add(&c->initial_string_buffer,
+                            c->args.initial_connect_string);
       connector_ref(arg);
       grpc_endpoint_write(exec_ctx, tcp, &c->initial_string_buffer,
                           &c->initial_string_sent);

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

@@ -36,9 +36,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
 
 #include "src/core/ext/client_channel/client_channel.h"
 #include "src/core/ext/client_channel/http_connect_handshaker.h"
@@ -68,7 +68,7 @@ typedef struct {
   grpc_connect_in_args args;
   grpc_connect_out_args *result;
   grpc_closure initial_string_sent;
-  gpr_slice_buffer initial_string_buffer;
+  grpc_slice_buffer initial_string_buffer;
 
   gpr_mu mu;
   grpc_endpoint *connecting_endpoint;
@@ -131,7 +131,7 @@ static void on_secure_handshake_done(grpc_exec_ctx *exec_ctx, void *arg,
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, grpc_endpoint *endpoint,
                               grpc_channel_args *args,
-                              gpr_slice_buffer *read_buffer, void *user_data,
+                              grpc_slice_buffer *read_buffer, void *user_data,
                               grpc_error *error) {
   connector *c = user_data;
   c->tmp_args = args;
@@ -166,12 +166,12 @@ static void connected(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
     GPR_ASSERT(c->connecting_endpoint == NULL);
     c->connecting_endpoint = tcp;
     gpr_mu_unlock(&c->mu);
-    if (!GPR_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
+    if (!GRPC_SLICE_IS_EMPTY(c->args.initial_connect_string)) {
       grpc_closure_init(&c->initial_string_sent, on_initial_connect_string_sent,
                         c);
-      gpr_slice_buffer_init(&c->initial_string_buffer);
-      gpr_slice_buffer_add(&c->initial_string_buffer,
-                           c->args.initial_connect_string);
+      grpc_slice_buffer_init(&c->initial_string_buffer);
+      grpc_slice_buffer_add(&c->initial_string_buffer,
+                            c->args.initial_connect_string);
       grpc_endpoint_write(exec_ctx, tcp, &c->initial_string_buffer,
                           &c->initial_string_sent);
     } else {

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

@@ -56,7 +56,7 @@ typedef struct server_connect_state {
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, grpc_endpoint *endpoint,
                               grpc_channel_args *args,
-                              gpr_slice_buffer *read_buffer, void *user_data,
+                              grpc_slice_buffer *read_buffer, void *user_data,
                               grpc_error *error) {
   server_connect_state *state = user_data;
   if (error != GRPC_ERROR_NONE) {

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

@@ -117,7 +117,7 @@ static void on_secure_handshake_done(grpc_exec_ctx *exec_ctx, void *statep,
 
 static void on_handshake_done(grpc_exec_ctx *exec_ctx, grpc_endpoint *endpoint,
                               grpc_channel_args *args,
-                              gpr_slice_buffer *read_buffer, void *user_data,
+                              grpc_slice_buffer *read_buffer, void *user_data,
                               grpc_error *error) {
   server_secure_connect *connection_state = user_data;
   if (error != GRPC_ERROR_NONE) {

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

@@ -34,6 +34,7 @@
 #include "src/core/ext/transport/chttp2/transport/bin_decoder.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 
 static uint8_t decode_table[] = {
@@ -142,11 +143,11 @@ bool grpc_base64_decode_partial(struct grpc_base64_decode_context *ctx) {
   return true;
 }
 
-gpr_slice grpc_chttp2_base64_decode(gpr_slice input) {
-  size_t input_length = GPR_SLICE_LENGTH(input);
+grpc_slice grpc_chttp2_base64_decode(grpc_slice input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
   size_t output_length = input_length / 4 * 3;
   struct grpc_base64_decode_context ctx;
-  gpr_slice output;
+  grpc_slice output;
 
   if (input_length % 4 != 0) {
     gpr_log(GPR_ERROR,
@@ -158,7 +159,7 @@ gpr_slice grpc_chttp2_base64_decode(gpr_slice input) {
   }
 
   if (input_length > 0) {
-    uint8_t *input_end = GPR_SLICE_END_PTR(input);
+    uint8_t *input_end = GRPC_SLICE_END_PTR(input);
     if (*(--input_end) == '=') {
       output_length--;
       if (*(--input_end) == '=') {
@@ -166,30 +167,30 @@ gpr_slice grpc_chttp2_base64_decode(gpr_slice input) {
       }
     }
   }
-  output = gpr_slice_malloc(output_length);
+  output = grpc_slice_malloc(output_length);
 
-  ctx.input_cur = GPR_SLICE_START_PTR(input);
-  ctx.input_end = GPR_SLICE_END_PTR(input);
-  ctx.output_cur = GPR_SLICE_START_PTR(output);
-  ctx.output_end = GPR_SLICE_END_PTR(output);
+  ctx.input_cur = GRPC_SLICE_START_PTR(input);
+  ctx.input_end = GRPC_SLICE_END_PTR(input);
+  ctx.output_cur = GRPC_SLICE_START_PTR(output);
+  ctx.output_end = GRPC_SLICE_END_PTR(output);
   ctx.contains_tail = false;
 
   if (!grpc_base64_decode_partial(&ctx)) {
-    char *s = gpr_dump_slice(input, GPR_DUMP_ASCII);
+    char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    gpr_slice_unref(output);
+    grpc_slice_unref(output);
     return gpr_empty_slice();
   }
-  GPR_ASSERT(ctx.output_cur == GPR_SLICE_END_PTR(output));
-  GPR_ASSERT(ctx.input_cur == GPR_SLICE_END_PTR(input));
+  GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(ctx.input_cur == GRPC_SLICE_END_PTR(input));
   return output;
 }
 
-gpr_slice grpc_chttp2_base64_decode_with_length(gpr_slice input,
-                                                size_t output_length) {
-  size_t input_length = GPR_SLICE_LENGTH(input);
-  gpr_slice output = gpr_slice_malloc(output_length);
+grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
+                                                 size_t output_length) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
+  grpc_slice output = grpc_slice_malloc(output_length);
   struct grpc_base64_decode_context ctx;
 
   // The length of a base64 string cannot be 4 * n + 1
@@ -199,7 +200,7 @@ gpr_slice grpc_chttp2_base64_decode_with_length(gpr_slice input,
             "grpc_chttp2_base64_decode_with_length has a length of %d, which "
             "has a tail of 1 byte.\n",
             (int)input_length);
-    gpr_slice_unref(output);
+    grpc_slice_unref(output);
     return gpr_empty_slice();
   }
 
@@ -209,24 +210,24 @@ gpr_slice grpc_chttp2_base64_decode_with_length(gpr_slice input,
             "than the max possible output length %d.\n",
             (int)output_length,
             (int)(input_length / 4 * 3 + tail_xtra[input_length % 4]));
-    gpr_slice_unref(output);
+    grpc_slice_unref(output);
     return gpr_empty_slice();
   }
 
-  ctx.input_cur = GPR_SLICE_START_PTR(input);
-  ctx.input_end = GPR_SLICE_END_PTR(input);
-  ctx.output_cur = GPR_SLICE_START_PTR(output);
-  ctx.output_end = GPR_SLICE_END_PTR(output);
+  ctx.input_cur = GRPC_SLICE_START_PTR(input);
+  ctx.input_end = GRPC_SLICE_END_PTR(input);
+  ctx.output_cur = GRPC_SLICE_START_PTR(output);
+  ctx.output_end = GRPC_SLICE_END_PTR(output);
   ctx.contains_tail = true;
 
   if (!grpc_base64_decode_partial(&ctx)) {
-    char *s = gpr_dump_slice(input, GPR_DUMP_ASCII);
+    char *s = grpc_dump_slice(input, GPR_DUMP_ASCII);
     gpr_log(GPR_ERROR, "Base64 decoding failed, input string:\n%s\n", s);
     gpr_free(s);
-    gpr_slice_unref(output);
+    grpc_slice_unref(output);
     return gpr_empty_slice();
   }
-  GPR_ASSERT(ctx.output_cur == GPR_SLICE_END_PTR(output));
-  GPR_ASSERT(ctx.input_cur <= GPR_SLICE_END_PTR(input));
+  GPR_ASSERT(ctx.output_cur == GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(ctx.input_cur <= GRPC_SLICE_END_PTR(input));
   return output;
 }

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

@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include <stdbool.h>
 
 struct grpc_base64_decode_context {
@@ -55,12 +55,12 @@ bool grpc_base64_decode_partial(struct grpc_base64_decode_context *ctx);
 
 /* base64 decode a slice with pad chars. Returns a new slice, does not take
    ownership of the input. Returns an empty slice if decoding is failed. */
-gpr_slice grpc_chttp2_base64_decode(gpr_slice input);
+grpc_slice grpc_chttp2_base64_decode(grpc_slice input);
 
 /* base64 decode a slice without pad chars, data length is needed. Returns a new
    slice, does not take ownership of the input. Returns an empty slice if
    decoding is failed. */
-gpr_slice grpc_chttp2_base64_decode_with_length(gpr_slice input,
-                                                size_t output_length);
+grpc_slice grpc_chttp2_base64_decode_with_length(grpc_slice input,
+                                                 size_t output_length);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_DECODER_H */

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

@@ -61,14 +61,14 @@ static const b64_huff_sym huff_alphabet[64] = {
 
 static const uint8_t tail_xtra[3] = {0, 2, 3};
 
-gpr_slice grpc_chttp2_base64_encode(gpr_slice input) {
-  size_t input_length = GPR_SLICE_LENGTH(input);
+grpc_slice grpc_chttp2_base64_encode(grpc_slice input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
   size_t input_triplets = input_length / 3;
   size_t tail_case = input_length % 3;
   size_t output_length = input_triplets * 4 + tail_xtra[tail_case];
-  gpr_slice output = gpr_slice_malloc(output_length);
-  uint8_t *in = GPR_SLICE_START_PTR(input);
-  char *out = (char *)GPR_SLICE_START_PTR(output);
+  grpc_slice output = grpc_slice_malloc(output_length);
+  uint8_t *in = GRPC_SLICE_START_PTR(input);
+  char *out = (char *)GRPC_SLICE_START_PTR(output);
   size_t i;
 
   /* encode full triplets */
@@ -100,27 +100,29 @@ gpr_slice grpc_chttp2_base64_encode(gpr_slice input) {
       break;
   }
 
-  GPR_ASSERT(out == (char *)GPR_SLICE_END_PTR(output));
-  GPR_ASSERT(in == GPR_SLICE_END_PTR(input));
+  GPR_ASSERT(out == (char *)GRPC_SLICE_END_PTR(output));
+  GPR_ASSERT(in == GRPC_SLICE_END_PTR(input));
   return output;
 }
 
-gpr_slice grpc_chttp2_huffman_compress(gpr_slice input) {
+grpc_slice grpc_chttp2_huffman_compress(grpc_slice input) {
   size_t nbits;
   uint8_t *in;
   uint8_t *out;
-  gpr_slice output;
+  grpc_slice output;
   uint32_t temp = 0;
   uint32_t temp_length = 0;
 
   nbits = 0;
-  for (in = GPR_SLICE_START_PTR(input); in != GPR_SLICE_END_PTR(input); ++in) {
+  for (in = GRPC_SLICE_START_PTR(input); in != GRPC_SLICE_END_PTR(input);
+       ++in) {
     nbits += grpc_chttp2_huffsyms[*in].length;
   }
 
-  output = gpr_slice_malloc(nbits / 8 + (nbits % 8 != 0));
-  out = GPR_SLICE_START_PTR(output);
-  for (in = GPR_SLICE_START_PTR(input); in != GPR_SLICE_END_PTR(input); ++in) {
+  output = grpc_slice_malloc(nbits / 8 + (nbits % 8 != 0));
+  out = GRPC_SLICE_START_PTR(output);
+  for (in = GRPC_SLICE_START_PTR(input); in != GRPC_SLICE_END_PTR(input);
+       ++in) {
     int sym = *in;
     temp <<= grpc_chttp2_huffsyms[sym].length;
     temp |= grpc_chttp2_huffsyms[sym].bits;
@@ -141,7 +143,7 @@ gpr_slice grpc_chttp2_huffman_compress(gpr_slice input) {
                        (uint8_t)(0xffu >> temp_length));
   }
 
-  GPR_ASSERT(out == GPR_SLICE_END_PTR(output));
+  GPR_ASSERT(out == GRPC_SLICE_END_PTR(output));
 
   return output;
 }
@@ -175,16 +177,17 @@ static void enc_add1(huff_out *out, uint8_t a) {
   enc_flush_some(out);
 }
 
-gpr_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(gpr_slice input) {
-  size_t input_length = GPR_SLICE_LENGTH(input);
+grpc_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(
+    grpc_slice input) {
+  size_t input_length = GRPC_SLICE_LENGTH(input);
   size_t input_triplets = input_length / 3;
   size_t tail_case = input_length % 3;
   size_t output_syms = input_triplets * 4 + tail_xtra[tail_case];
   size_t max_output_bits = 11 * output_syms;
   size_t max_output_length = max_output_bits / 8 + (max_output_bits % 8 != 0);
-  gpr_slice output = gpr_slice_malloc(max_output_length);
-  uint8_t *in = GPR_SLICE_START_PTR(input);
-  uint8_t *start_out = GPR_SLICE_START_PTR(output);
+  grpc_slice output = grpc_slice_malloc(max_output_length);
+  uint8_t *in = GRPC_SLICE_START_PTR(input);
+  uint8_t *start_out = GRPC_SLICE_START_PTR(output);
   huff_out out;
   size_t i;
 
@@ -231,9 +234,9 @@ gpr_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(gpr_slice input) {
                            (uint8_t)(0xffu >> out.temp_length));
   }
 
-  GPR_ASSERT(out.out <= GPR_SLICE_END_PTR(output));
-  GPR_SLICE_SET_LENGTH(output, out.out - start_out);
+  GPR_ASSERT(out.out <= GRPC_SLICE_END_PTR(output));
+  GRPC_SLICE_SET_LENGTH(output, out.out - start_out);
 
-  GPR_ASSERT(in == GPR_SLICE_END_PTR(input));
+  GPR_ASSERT(in == GRPC_SLICE_END_PTR(input));
   return output;
 }

src/core/ext/transport/chttp2/transport/bin_encoder.h

@@ -34,21 +34,22 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 
 /* base64 encode a slice. Returns a new slice, does not take ownership of the
    input */
-gpr_slice grpc_chttp2_base64_encode(gpr_slice input);
+grpc_slice grpc_chttp2_base64_encode(grpc_slice input);
 
 /* Compress a slice with the static huffman encoder detailed in the hpack
    standard. Returns a new slice, does not take ownership of the input */
-gpr_slice grpc_chttp2_huffman_compress(gpr_slice input);
+grpc_slice grpc_chttp2_huffman_compress(grpc_slice input);
 
 /* equivalent to:
-   gpr_slice x = grpc_chttp2_base64_encode(input);
-   gpr_slice y = grpc_chttp2_huffman_compress(x);
-   gpr_slice_unref(x);
+   grpc_slice x = grpc_chttp2_base64_encode(input);
+   grpc_slice y = grpc_chttp2_huffman_compress(x);
+   grpc_slice_unref(x);
    return y; */
-gpr_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(gpr_slice input);
+grpc_slice grpc_chttp2_base64_encode_and_huffman_compress_impl(
+    grpc_slice input);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_BIN_ENCODER_H */

src/core/ext/transport/chttp2/transport/chttp2_transport.c

@@ -38,9 +38,9 @@
 #include <stdio.h>
 #include <string.h>
 
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
@@ -51,6 +51,7 @@
 #include "src/core/lib/http/parser.h"
 #include "src/core/lib/iomgr/workqueue.h"
 #include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/timeout_encoding.h"
@@ -143,12 +144,12 @@ static void destruct_transport(grpc_exec_ctx *exec_ctx,
 
   grpc_endpoint_destroy(exec_ctx, t->ep);
 
-  gpr_slice_buffer_destroy(&t->qbuf);
+  grpc_slice_buffer_destroy(&t->qbuf);
 
-  gpr_slice_buffer_destroy(&t->outbuf);
+  grpc_slice_buffer_destroy(&t->outbuf);
   grpc_chttp2_hpack_compressor_destroy(&t->hpack_compressor);
 
-  gpr_slice_buffer_destroy(&t->read_buffer);
+  grpc_slice_buffer_destroy(&t->read_buffer);
   grpc_chttp2_hpack_parser_destroy(&t->hpack_parser);
   grpc_chttp2_goaway_parser_destroy(&t->goaway_parser);
 
@@ -243,9 +244,9 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
       &t->channel_callback.state_tracker, GRPC_CHANNEL_READY,
       is_client ? "client_transport" : "server_transport");
 
-  gpr_slice_buffer_init(&t->qbuf);
+  grpc_slice_buffer_init(&t->qbuf);
 
-  gpr_slice_buffer_init(&t->outbuf);
+  grpc_slice_buffer_init(&t->outbuf);
   grpc_chttp2_hpack_compressor_init(&t->hpack_compressor);
 
   grpc_closure_init(&t->write_action_begin_locked, write_action_begin_locked,
@@ -264,7 +265,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   grpc_chttp2_goaway_parser_init(&t->goaway_parser);
   grpc_chttp2_hpack_parser_init(&t->hpack_parser);
 
-  gpr_slice_buffer_init(&t->read_buffer);
+  grpc_slice_buffer_init(&t->read_buffer);
 
   /* 8 is a random stab in the dark as to a good initial size: it's small enough
      that it shouldn't waste memory for infrequently used connections, yet
@@ -286,8 +287,8 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   t->sent_local_settings = 0;
 
   if (is_client) {
-    gpr_slice_buffer_add(&t->outbuf, gpr_slice_from_copied_string(
-                                         GRPC_CHTTP2_CLIENT_CONNECT_STRING));
+    grpc_slice_buffer_add(&t->outbuf, grpc_slice_from_copied_string(
+                                          GRPC_CHTTP2_CLIENT_CONNECT_STRING));
     grpc_chttp2_initiate_write(exec_ctx, t, false, "initial_write");
   }
 
@@ -471,7 +472,7 @@ static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   grpc_chttp2_incoming_metadata_buffer_init(&s->metadata_buffer[0]);
   grpc_chttp2_incoming_metadata_buffer_init(&s->metadata_buffer[1]);
   grpc_chttp2_data_parser_init(&s->data_parser);
-  gpr_slice_buffer_init(&s->flow_controlled_buffer);
+  grpc_slice_buffer_init(&s->flow_controlled_buffer);
   s->deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
   grpc_closure_init(&s->complete_fetch, complete_fetch, s);
   grpc_closure_init(&s->complete_fetch_locked, complete_fetch_locked, s);
@@ -531,7 +532,7 @@ static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, void *sp,
   grpc_chttp2_data_parser_destroy(exec_ctx, &s->data_parser);
   grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[0]);
   grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[1]);
-  gpr_slice_buffer_destroy(&s->flow_controlled_buffer);
+  grpc_slice_buffer_destroy(&s->flow_controlled_buffer);
   GRPC_ERROR_UNREF(s->read_closed_error);
   GRPC_ERROR_UNREF(s->write_closed_error);
 
@@ -756,11 +757,11 @@ static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 void grpc_chttp2_add_incoming_goaway(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
                                      uint32_t goaway_error,
-                                     gpr_slice goaway_text) {
-  char *msg = gpr_dump_slice(goaway_text, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+                                     grpc_slice goaway_text) {
+  char *msg = grpc_dump_slice(goaway_text, GPR_DUMP_HEX | GPR_DUMP_ASCII);
   GRPC_CHTTP2_IF_TRACING(
       gpr_log(GPR_DEBUG, "got goaway [%d]: %s", goaway_error, msg));
-  gpr_slice_unref(goaway_text);
+  grpc_slice_unref(goaway_text);
   t->seen_goaway = 1;
   /* lie: use transient failure from the transport to indicate goaway has been
    * received */
@@ -884,8 +885,8 @@ static void add_fetched_slice_locked(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
                                      grpc_chttp2_stream *s) {
   s->fetched_send_message_length +=
-      (uint32_t)GPR_SLICE_LENGTH(s->fetching_slice);
-  gpr_slice_buffer_add(&s->flow_controlled_buffer, s->fetching_slice);
+      (uint32_t)GRPC_SLICE_LENGTH(s->fetching_slice);
+  grpc_slice_buffer_add(&s->flow_controlled_buffer, s->fetching_slice);
   if (s->id != 0) {
     grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message");
   }
@@ -1036,7 +1037,7 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
                                       "op.send_initial_metadata");
         }
       } else {
-        s->send_trailing_metadata = NULL;
+        s->send_initial_metadata = NULL;
         grpc_chttp2_complete_closure_step(
             exec_ctx, t, s, &s->send_initial_metadata_finished,
             GRPC_ERROR_CREATE(
@@ -1056,7 +1057,7 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
     } else {
       GPR_ASSERT(s->fetching_send_message == NULL);
       uint8_t *frame_hdr =
-          gpr_slice_buffer_tiny_add(&s->flow_controlled_buffer, 5);
+          grpc_slice_buffer_tiny_add(&s->flow_controlled_buffer, 5);
       uint32_t flags = op->send_message->flags;
       frame_hdr[0] = (flags & GRPC_WRITE_INTERNAL_COMPRESS) != 0;
       size_t len = op->send_message->length;
@@ -1196,7 +1197,7 @@ static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
   p->id[7] = (uint8_t)(t->ping_counter & 0xff);
   t->ping_counter++;
   p->on_recv = on_recv;
-  gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_ping_create(0, p->id));
+  grpc_slice_buffer_add(&t->qbuf, grpc_chttp2_ping_create(0, p->id));
   grpc_chttp2_initiate_write(exec_ctx, t, true, "send_ping");
 }
 
@@ -1220,7 +1221,7 @@ void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 }
 
 static void send_goaway(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
-                        grpc_chttp2_error_code error, gpr_slice data) {
+                        grpc_chttp2_error_code error, grpc_slice data) {
   t->sent_goaway_state = GRPC_CHTTP2_GOAWAY_SEND_SCHEDULED;
   grpc_chttp2_goaway_append(t->last_new_stream_id, (uint32_t)error, data,
                             &t->qbuf);
@@ -1243,7 +1244,7 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx,
   if (op->send_goaway) {
     send_goaway(exec_ctx, t,
                 grpc_chttp2_grpc_status_to_http2_error(op->goaway_status),
-                gpr_slice_ref(*op->goaway_message));
+                grpc_slice_ref(*op->goaway_message));
   }
 
   if (op->set_accept_stream) {
@@ -1432,7 +1433,7 @@ void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx,
                             &grpc_status);
 
     if (s->id != 0) {
-      gpr_slice_buffer_add(
+      grpc_slice_buffer_add(
           &t->qbuf, grpc_chttp2_rst_stream_create(s->id, (uint32_t)http_error,
                                                   &s->stats.outgoing));
       grpc_chttp2_initiate_write(exec_ctx, t, false, "rst_stream");
@@ -1445,7 +1446,7 @@ void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx,
       free_msg = true;
       msg = grpc_error_string(due_to_error);
     }
-    gpr_slice msg_slice = gpr_slice_from_copied_string(msg);
+    grpc_slice msg_slice = grpc_slice_from_copied_string(msg);
     grpc_chttp2_fake_status(exec_ctx, t, s, grpc_status, &msg_slice);
     if (free_msg) grpc_error_free_string(msg);
   }
@@ -1458,7 +1459,7 @@ void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx,
 
 void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                              grpc_chttp2_stream *s, grpc_status_code status,
-                             gpr_slice *slice) {
+                             grpc_slice *slice) {
   if (status != GRPC_STATUS_OK) {
     s->seen_error = true;
   }
@@ -1481,13 +1482,13 @@ void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
           &s->metadata_buffer[1],
           grpc_mdelem_from_metadata_strings(
               GRPC_MDSTR_GRPC_MESSAGE,
-              grpc_mdstr_from_slice(gpr_slice_ref(*slice))));
+              grpc_mdstr_from_slice(grpc_slice_ref(*slice))));
     }
     s->published_metadata[1] = GRPC_METADATA_SYNTHESIZED_FROM_FAKE;
     grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s);
   }
   if (slice) {
-    gpr_slice_unref(*slice);
+    grpc_slice_unref(*slice);
   }
 }
 
@@ -1522,13 +1523,17 @@ static void fail_pending_writes(grpc_exec_ctx *exec_ctx,
                                 grpc_error *error) {
   error =
       removal_error(error, s, "Pending writes failed due to stream closure");
-  s->fetching_send_message = NULL;
+  s->send_initial_metadata = NULL;
   grpc_chttp2_complete_closure_step(
       exec_ctx, t, s, &s->send_initial_metadata_finished, GRPC_ERROR_REF(error),
       "send_initial_metadata_finished");
+
+  s->send_trailing_metadata = NULL;
   grpc_chttp2_complete_closure_step(
       exec_ctx, t, s, &s->send_trailing_metadata_finished,
       GRPC_ERROR_REF(error), "send_trailing_metadata_finished");
+
+  s->fetching_send_message = NULL;
   grpc_chttp2_complete_closure_step(
       exec_ctx, t, s, &s->fetching_send_message_finished, GRPC_ERROR_REF(error),
       "fetching_send_message_finished");
@@ -1584,9 +1589,9 @@ void grpc_chttp2_mark_stream_closed(grpc_exec_ctx *exec_ctx,
 
 static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                            grpc_chttp2_stream *s, grpc_error *error) {
-  gpr_slice hdr;
-  gpr_slice status_hdr;
-  gpr_slice message_pfx;
+  grpc_slice hdr;
+  grpc_slice status_hdr;
+  grpc_slice message_pfx;
   uint8_t *p;
   uint32_t len = 0;
   grpc_status_code grpc_status;
@@ -1605,8 +1610,8 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
        time we got around to sending this, so instead we ignore HPACK
        compression
        and just write the uncompressed bytes onto the wire. */
-    status_hdr = gpr_slice_malloc(15 + (grpc_status >= 10));
-    p = GPR_SLICE_START_PTR(status_hdr);
+    status_hdr = grpc_slice_malloc(15 + (grpc_status >= 10));
+    p = GRPC_SLICE_START_PTR(status_hdr);
     *p++ = 0x40; /* literal header */
     *p++ = 11;   /* len(grpc-status) */
     *p++ = 'g';
@@ -1628,8 +1633,8 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
       *p++ = (uint8_t)('0' + (grpc_status / 10));
       *p++ = (uint8_t)('0' + (grpc_status % 10));
     }
-    GPR_ASSERT(p == GPR_SLICE_END_PTR(status_hdr));
-    len += (uint32_t)GPR_SLICE_LENGTH(status_hdr);
+    GPR_ASSERT(p == GRPC_SLICE_END_PTR(status_hdr));
+    len += (uint32_t)GRPC_SLICE_LENGTH(status_hdr);
 
     const char *optional_message =
         grpc_error_get_str(error, GRPC_ERROR_STR_GRPC_MESSAGE);
@@ -1637,8 +1642,8 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     if (optional_message != NULL) {
       size_t msg_len = strlen(optional_message);
       GPR_ASSERT(msg_len < 127);
-      message_pfx = gpr_slice_malloc(15);
-      p = GPR_SLICE_START_PTR(message_pfx);
+      message_pfx = grpc_slice_malloc(15);
+      p = GRPC_SLICE_START_PTR(message_pfx);
       *p++ = 0x40;
       *p++ = 12; /* len(grpc-message) */
       *p++ = 'g';
@@ -1654,13 +1659,13 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
       *p++ = 'g';
       *p++ = 'e';
       *p++ = (uint8_t)msg_len;
-      GPR_ASSERT(p == GPR_SLICE_END_PTR(message_pfx));
-      len += (uint32_t)GPR_SLICE_LENGTH(message_pfx);
+      GPR_ASSERT(p == GRPC_SLICE_END_PTR(message_pfx));
+      len += (uint32_t)GRPC_SLICE_LENGTH(message_pfx);
       len += (uint32_t)msg_len;
     }
 
-    hdr = gpr_slice_malloc(9);
-    p = GPR_SLICE_START_PTR(hdr);
+    hdr = grpc_slice_malloc(9);
+    p = GRPC_SLICE_START_PTR(hdr);
     *p++ = (uint8_t)(len >> 16);
     *p++ = (uint8_t)(len >> 8);
     *p++ = (uint8_t)(len);
@@ -1670,16 +1675,16 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     *p++ = (uint8_t)(s->id >> 16);
     *p++ = (uint8_t)(s->id >> 8);
     *p++ = (uint8_t)(s->id);
-    GPR_ASSERT(p == GPR_SLICE_END_PTR(hdr));
+    GPR_ASSERT(p == GRPC_SLICE_END_PTR(hdr));
 
-    gpr_slice_buffer_add(&t->qbuf, hdr);
-    gpr_slice_buffer_add(&t->qbuf, status_hdr);
+    grpc_slice_buffer_add(&t->qbuf, hdr);
+    grpc_slice_buffer_add(&t->qbuf, status_hdr);
     if (optional_message) {
-      gpr_slice_buffer_add(&t->qbuf, message_pfx);
-      gpr_slice_buffer_add(&t->qbuf,
-                           gpr_slice_from_copied_string(optional_message));
+      grpc_slice_buffer_add(&t->qbuf, message_pfx);
+      grpc_slice_buffer_add(&t->qbuf,
+                            grpc_slice_from_copied_string(optional_message));
     }
-    gpr_slice_buffer_add(
+    grpc_slice_buffer_add(
         &t->qbuf, grpc_chttp2_rst_stream_create(s->id, GRPC_CHTTP2_NO_ERROR,
                                                 &s->stats.outgoing));
   }
@@ -1690,7 +1695,7 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     free_msg = true;
     msg = grpc_error_string(error);
   }
-  gpr_slice msg_slice = gpr_slice_from_copied_string(msg);
+  grpc_slice msg_slice = grpc_slice_from_copied_string(msg);
   grpc_chttp2_fake_status(exec_ctx, t, s, grpc_status, &msg_slice);
   if (free_msg) grpc_error_free_string(msg);
 
@@ -1861,7 +1866,7 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp,
     keep_reading = true;
     GRPC_CHTTP2_REF_TRANSPORT(t, "keep_reading");
   }
-  gpr_slice_buffer_reset_and_unref(&t->read_buffer);
+  grpc_slice_buffer_reset_and_unref(&t->read_buffer);
 
   if (keep_reading) {
     grpc_endpoint_read(exec_ctx, t->ep, &t->read_buffer, &t->read_action_begin);
@@ -1915,7 +1920,7 @@ static void incoming_byte_stream_unref(grpc_exec_ctx *exec_ctx,
                                        grpc_chttp2_incoming_byte_stream *bs) {
   if (gpr_unref(&bs->refs)) {
     GRPC_ERROR_UNREF(bs->error);
-    gpr_slice_buffer_destroy(&bs->slices);
+    grpc_slice_buffer_destroy(&bs->slices);
     gpr_mu_destroy(&bs->slice_mu);
     gpr_free(bs);
   }
@@ -1977,7 +1982,7 @@ static void incoming_byte_stream_next_locked(grpc_exec_ctx *exec_ctx,
   }
   gpr_mu_lock(&bs->slice_mu);
   if (bs->slices.count > 0) {
-    *bs->next_action.slice = gpr_slice_buffer_take_first(&bs->slices);
+    *bs->next_action.slice = grpc_slice_buffer_take_first(&bs->slices);
     grpc_closure_run(exec_ctx, bs->next_action.on_complete, GRPC_ERROR_NONE);
   } else if (bs->error != GRPC_ERROR_NONE) {
     grpc_closure_run(exec_ctx, bs->next_action.on_complete,
@@ -1992,7 +1997,7 @@ static void incoming_byte_stream_next_locked(grpc_exec_ctx *exec_ctx,
 
 static int incoming_byte_stream_next(grpc_exec_ctx *exec_ctx,
                                      grpc_byte_stream *byte_stream,
-                                     gpr_slice *slice, size_t max_size_hint,
+                                     grpc_slice *slice, size_t max_size_hint,
                                      grpc_closure *on_complete) {
   GPR_TIMER_BEGIN("incoming_byte_stream_next", 0);
   grpc_chttp2_incoming_byte_stream *bs =
@@ -2045,19 +2050,19 @@ static void incoming_byte_stream_publish_error(
 
 void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx,
                                            grpc_chttp2_incoming_byte_stream *bs,
-                                           gpr_slice slice) {
+                                           grpc_slice slice) {
   gpr_mu_lock(&bs->slice_mu);
-  if (bs->remaining_bytes < GPR_SLICE_LENGTH(slice)) {
+  if (bs->remaining_bytes < GRPC_SLICE_LENGTH(slice)) {
     incoming_byte_stream_publish_error(
         exec_ctx, bs, GRPC_ERROR_CREATE("Too many bytes in stream"));
   } else {
-    bs->remaining_bytes -= (uint32_t)GPR_SLICE_LENGTH(slice);
+    bs->remaining_bytes -= (uint32_t)GRPC_SLICE_LENGTH(slice);
     if (bs->on_next != NULL) {
       *bs->next = slice;
       grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_NONE, NULL);
       bs->on_next = NULL;
     } else {
-      gpr_slice_buffer_add(&bs->slices, slice);
+      grpc_slice_buffer_add(&bs->slices, slice);
     }
   }
   gpr_mu_unlock(&bs->slice_mu);
@@ -2095,7 +2100,7 @@ grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create(
   incoming_byte_stream->transport = t;
   incoming_byte_stream->stream = s;
   gpr_ref(&incoming_byte_stream->stream->active_streams);
-  gpr_slice_buffer_init(&incoming_byte_stream->slices);
+  grpc_slice_buffer_init(&incoming_byte_stream->slices);
   incoming_byte_stream->on_next = NULL;
   incoming_byte_stream->is_tail = 1;
   incoming_byte_stream->error = GRPC_ERROR_NONE;
@@ -2163,7 +2168,7 @@ static void benign_reclaimer_locked(grpc_exec_ctx *exec_ctx, void *arg,
               t->peer_string);
     }
     send_goaway(exec_ctx, t, GRPC_CHTTP2_ENHANCE_YOUR_CALM,
-                gpr_slice_from_static_string("Buffers full"));
+                grpc_slice_from_static_string("Buffers full"));
   } else if (error == GRPC_ERROR_NONE && grpc_resource_quota_trace) {
     gpr_log(GPR_DEBUG,
             "HTTP2: %s - skip benign reclamation, there are still %" PRIdPTR
@@ -2293,6 +2298,14 @@ static char *chttp2_get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
   return gpr_strdup(((grpc_chttp2_transport *)t)->peer_string);
 }
 
+/*******************************************************************************
+ * MONITORING
+ */
+static grpc_endpoint *chttp2_get_endpoint(grpc_exec_ctx *exec_ctx,
+                                          grpc_transport *t) {
+  return ((grpc_chttp2_transport *)t)->ep;
+}
+
 static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
                                              "chttp2",
                                              init_stream,
@@ -2302,7 +2315,8 @@ static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
                                              perform_transport_op,
                                              destroy_stream,
                                              destroy_transport,
-                                             chttp2_get_peer};
+                                             chttp2_get_peer,
+                                             chttp2_get_endpoint};
 
 grpc_transport *grpc_create_chttp2_transport(
     grpc_exec_ctx *exec_ctx, const grpc_channel_args *channel_args,
@@ -2314,12 +2328,12 @@ grpc_transport *grpc_create_chttp2_transport(
 
 void grpc_chttp2_transport_start_reading(grpc_exec_ctx *exec_ctx,
                                          grpc_transport *transport,
-                                         gpr_slice_buffer *read_buffer) {
+                                         grpc_slice_buffer *read_buffer) {
   grpc_chttp2_transport *t = (grpc_chttp2_transport *)transport;
   GRPC_CHTTP2_REF_TRANSPORT(
       t, "reading_action"); /* matches unref inside reading_action */
   if (read_buffer != NULL) {
-    gpr_slice_buffer_move_into(read_buffer, &t->read_buffer);
+    grpc_slice_buffer_move_into(read_buffer, &t->read_buffer);
     gpr_free(read_buffer);
   }
   read_action_begin(exec_ctx, t, GRPC_ERROR_NONE);

src/core/ext/transport/chttp2/transport/chttp2_transport.h

@@ -48,6 +48,6 @@ grpc_transport *grpc_create_chttp2_transport(
 /// leftover bytes previously read from the endpoint (e.g., by handshakers).
 void grpc_chttp2_transport_start_reading(grpc_exec_ctx *exec_ctx,
                                          grpc_transport *transport,
-                                         gpr_slice_buffer *read_buffer);
+                                         grpc_slice_buffer *read_buffer);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_TRANSPORT_H */

src/core/ext/transport/chttp2/transport/frame.h

@@ -34,8 +34,8 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_H
 
+#include <grpc/slice.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
 
 #include "src/core/lib/iomgr/error.h"
 

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

@@ -40,6 +40,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 #include "src/core/ext/transport/chttp2/transport/internal.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport.h"
 
@@ -112,16 +113,16 @@ grpc_byte_stream *grpc_chttp2_incoming_frame_queue_pop(
   return out;
 }
 
-void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
+void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer *inbuf,
                              uint32_t write_bytes, int is_eof,
                              grpc_transport_one_way_stats *stats,
-                             gpr_slice_buffer *outbuf) {
-  gpr_slice hdr;
+                             grpc_slice_buffer *outbuf) {
+  grpc_slice hdr;
   uint8_t *p;
   static const size_t header_size = 9;
 
-  hdr = gpr_slice_malloc(header_size);
-  p = GPR_SLICE_START_PTR(hdr);
+  hdr = grpc_slice_malloc(header_size);
+  p = GRPC_SLICE_START_PTR(hdr);
   GPR_ASSERT(write_bytes < (1 << 24));
   *p++ = (uint8_t)(write_bytes >> 16);
   *p++ = (uint8_t)(write_bytes >> 8);
@@ -132,9 +133,9 @@ void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
   *p++ = (uint8_t)(id >> 16);
   *p++ = (uint8_t)(id >> 8);
   *p++ = (uint8_t)(id);
-  gpr_slice_buffer_add(outbuf, hdr);
+  grpc_slice_buffer_add(outbuf, hdr);
 
-  gpr_slice_buffer_move_first(inbuf, write_bytes, outbuf);
+  grpc_slice_buffer_move_first(inbuf, write_bytes, outbuf);
 
   stats->framing_bytes += header_size;
   stats->data_bytes += write_bytes;
@@ -143,9 +144,9 @@ void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
 static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
                                grpc_chttp2_data_parser *p,
                                grpc_chttp2_transport *t, grpc_chttp2_stream *s,
-                               gpr_slice slice) {
-  uint8_t *const beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *const end = GPR_SLICE_END_PTR(slice);
+                               grpc_slice slice) {
+  uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   uint32_t message_flags;
   grpc_chttp2_incoming_byte_stream *incoming_byte_stream;
@@ -176,7 +177,7 @@ static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
           p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID,
                                         (intptr_t)s->id);
           gpr_free(msg);
-          msg = gpr_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
+          msg = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
           p->error =
               grpc_error_set_str(p->error, GRPC_ERROR_STR_RAW_BYTES, msg);
           gpr_free(msg);
@@ -236,7 +237,7 @@ static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
         s->stats.incoming.data_bytes += p->frame_size;
         grpc_chttp2_incoming_byte_stream_push(
             exec_ctx, p->parsing_frame,
-            gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
+            grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
         grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame,
                                                   GRPC_ERROR_NONE);
         p->parsing_frame = NULL;
@@ -246,8 +247,8 @@ static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
         s->stats.incoming.data_bytes += p->frame_size;
         grpc_chttp2_incoming_byte_stream_push(
             exec_ctx, p->parsing_frame,
-            gpr_slice_sub(slice, (size_t)(cur - beg),
-                          (size_t)(cur + p->frame_size - beg)));
+            grpc_slice_sub(slice, (size_t)(cur - beg),
+                           (size_t)(cur + p->frame_size - beg)));
         grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame,
                                                   GRPC_ERROR_NONE);
         p->parsing_frame = NULL;
@@ -257,7 +258,7 @@ static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
         GPR_ASSERT(remaining <= p->frame_size);
         grpc_chttp2_incoming_byte_stream_push(
             exec_ctx, p->parsing_frame,
-            gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
+            grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
         p->frame_size -= remaining;
         s->stats.incoming.data_bytes += remaining;
         return GRPC_ERROR_NONE;
@@ -270,7 +271,7 @@ static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
 grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
                                           grpc_chttp2_transport *t,
                                           grpc_chttp2_stream *s,
-                                          gpr_slice slice, int is_last) {
+                                          grpc_slice slice, int is_last) {
   grpc_chttp2_data_parser *p = parser;
   grpc_error *error = parse_inner(exec_ctx, p, t, s, slice);
 

src/core/ext/transport/chttp2/transport/frame_data.h

@@ -36,8 +36,8 @@
 
 /* Parser for GRPC streams embedded in DATA frames */
 
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/transport/byte_stream.h"
@@ -94,11 +94,11 @@ grpc_error *grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser *parser,
 grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
                                           grpc_chttp2_transport *t,
                                           grpc_chttp2_stream *s,
-                                          gpr_slice slice, int is_last);
+                                          grpc_slice slice, int is_last);
 
-void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
+void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer *inbuf,
                              uint32_t write_bytes, int is_eof,
                              grpc_transport_one_way_stats *stats,
-                             gpr_slice_buffer *outbuf);
+                             grpc_slice_buffer *outbuf);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */

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

@@ -71,9 +71,9 @@ grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
                                             void *parser,
                                             grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s,
-                                            gpr_slice slice, int is_last) {
-  uint8_t *const beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *const end = GPR_SLICE_END_PTR(slice);
+                                            grpc_slice slice, int is_last) {
+  uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   grpc_chttp2_goaway_parser *p = parser;
 
@@ -151,7 +151,7 @@ grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
       if (is_last) {
         grpc_chttp2_add_incoming_goaway(
             exec_ctx, t, (uint32_t)p->error_code,
-            gpr_slice_new(p->debug_data, p->debug_length, gpr_free));
+            grpc_slice_new(p->debug_data, p->debug_length, gpr_free));
         p->debug_data = NULL;
       }
       return GRPC_ERROR_NONE;
@@ -160,13 +160,13 @@ grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
 }
 
 void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
-                               gpr_slice debug_data,
-                               gpr_slice_buffer *slice_buffer) {
-  gpr_slice header = gpr_slice_malloc(9 + 4 + 4);
-  uint8_t *p = GPR_SLICE_START_PTR(header);
+                               grpc_slice debug_data,
+                               grpc_slice_buffer *slice_buffer) {
+  grpc_slice header = grpc_slice_malloc(9 + 4 + 4);
+  uint8_t *p = GRPC_SLICE_START_PTR(header);
   uint32_t frame_length;
-  GPR_ASSERT(GPR_SLICE_LENGTH(debug_data) < UINT32_MAX - 4 - 4);
-  frame_length = 4 + 4 + (uint32_t)GPR_SLICE_LENGTH(debug_data);
+  GPR_ASSERT(GRPC_SLICE_LENGTH(debug_data) < UINT32_MAX - 4 - 4);
+  frame_length = 4 + 4 + (uint32_t)GRPC_SLICE_LENGTH(debug_data);
 
   /* frame header: length */
   *p++ = (uint8_t)(frame_length >> 16);
@@ -191,7 +191,7 @@ void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
   *p++ = (uint8_t)(error_code >> 16);
   *p++ = (uint8_t)(error_code >> 8);
   *p++ = (uint8_t)(error_code);
-  GPR_ASSERT(p == GPR_SLICE_END_PTR(header));
-  gpr_slice_buffer_add(slice_buffer, header);
-  gpr_slice_buffer_add(slice_buffer, debug_data);
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(header));
+  grpc_slice_buffer_add(slice_buffer, header);
+  grpc_slice_buffer_add(slice_buffer, debug_data);
 }

src/core/ext/transport/chttp2/transport/frame_goaway.h

@@ -34,9 +34,9 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
 
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 
@@ -69,10 +69,10 @@ grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
                                             void *parser,
                                             grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s,
-                                            gpr_slice slice, int is_last);
+                                            grpc_slice slice, int is_last);
 
 void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
-                               gpr_slice debug_data,
-                               gpr_slice_buffer *slice_buffer);
+                               grpc_slice debug_data,
+                               grpc_slice_buffer *slice_buffer);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H */

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

@@ -40,9 +40,9 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-gpr_slice grpc_chttp2_ping_create(uint8_t ack, uint8_t *opaque_8bytes) {
-  gpr_slice slice = gpr_slice_malloc(9 + 8);
-  uint8_t *p = GPR_SLICE_START_PTR(slice);
+grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint8_t *opaque_8bytes) {
+  grpc_slice slice = grpc_slice_malloc(9 + 8);
+  uint8_t *p = GRPC_SLICE_START_PTR(slice);
 
   *p++ = 0;
   *p++ = 0;
@@ -76,9 +76,9 @@ grpc_error *grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser *parser,
 grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
                                           grpc_chttp2_transport *t,
                                           grpc_chttp2_stream *s,
-                                          gpr_slice slice, int is_last) {
-  uint8_t *const beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *const end = GPR_SLICE_END_PTR(slice);
+                                          grpc_slice slice, int is_last) {
+  uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   grpc_chttp2_ping_parser *p = parser;
 
@@ -93,8 +93,8 @@ 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 {
-      gpr_slice_buffer_add(&t->qbuf,
-                           grpc_chttp2_ping_create(1, p->opaque_8bytes));
+      grpc_slice_buffer_add(&t->qbuf,
+                            grpc_chttp2_ping_create(1, p->opaque_8bytes));
       grpc_chttp2_initiate_write(exec_ctx, t, false, "ping response");
     }
   }

src/core/ext/transport/chttp2/transport/frame_ping.h

@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 
@@ -44,13 +44,13 @@ typedef struct {
   uint8_t opaque_8bytes[8];
 } grpc_chttp2_ping_parser;
 
-gpr_slice grpc_chttp2_ping_create(uint8_t ack, uint8_t *opaque_8bytes);
+grpc_slice grpc_chttp2_ping_create(uint8_t ack, uint8_t *opaque_8bytes);
 
 grpc_error *grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser *parser,
                                                 uint32_t length, uint8_t flags);
 grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser,
                                           grpc_chttp2_transport *t,
                                           grpc_chttp2_stream *s,
-                                          gpr_slice slice, int is_last);
+                                          grpc_slice slice, int is_last);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H */

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

@@ -42,12 +42,12 @@
 #include "src/core/ext/transport/chttp2/transport/http2_errors.h"
 #include "src/core/ext/transport/chttp2/transport/status_conversion.h"
 
-gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code,
-                                        grpc_transport_one_way_stats *stats) {
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code,
+                                         grpc_transport_one_way_stats *stats) {
   static const size_t frame_size = 13;
-  gpr_slice slice = gpr_slice_malloc(frame_size);
+  grpc_slice slice = grpc_slice_malloc(frame_size);
   stats->framing_bytes += frame_size;
-  uint8_t *p = GPR_SLICE_START_PTR(slice);
+  uint8_t *p = GRPC_SLICE_START_PTR(slice);
 
   // Frame size.
   *p++ = 0;
@@ -89,9 +89,9 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
                                                 void *parser,
                                                 grpc_chttp2_transport *t,
                                                 grpc_chttp2_stream *s,
-                                                gpr_slice slice, int is_last) {
-  uint8_t *const beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *const end = GPR_SLICE_END_PTR(slice);
+                                                grpc_slice slice, int is_last) {
+  uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   grpc_chttp2_rst_stream_parser *p = parser;
 
@@ -117,7 +117,7 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
       char *status_details;
       gpr_asprintf(&status_details, "Received RST_STREAM with error code %d",
                    reason);
-      gpr_slice slice_details = gpr_slice_from_copied_string(status_details);
+      grpc_slice slice_details = grpc_slice_from_copied_string(status_details);
       gpr_free(status_details);
       grpc_chttp2_fake_status(exec_ctx, t, s, status_code, &slice_details);
     }

src/core/ext/transport/chttp2/transport/frame_rst_stream.h

@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/transport/transport.h"
@@ -44,8 +44,8 @@ typedef struct {
   uint8_t reason_bytes[4];
 } grpc_chttp2_rst_stream_parser;
 
-gpr_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code,
-                                        grpc_transport_one_way_stats *stats);
+grpc_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code,
+                                         grpc_transport_one_way_stats *stats);
 
 grpc_error *grpc_chttp2_rst_stream_parser_begin_frame(
     grpc_chttp2_rst_stream_parser *parser, uint32_t length, uint8_t flags);
@@ -53,6 +53,6 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
                                                 void *parser,
                                                 grpc_chttp2_transport *t,
                                                 grpc_chttp2_stream *s,
-                                                gpr_slice slice, int is_last);
+                                                grpc_slice slice, int is_last);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H */

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

@@ -82,19 +82,19 @@ static uint8_t *fill_header(uint8_t *out, uint32_t length, uint8_t flags) {
   return out;
 }
 
-gpr_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
-                                      uint32_t force_mask, size_t count) {
+grpc_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
+                                       uint32_t force_mask, size_t count) {
   size_t i;
   uint32_t n = 0;
-  gpr_slice output;
+  grpc_slice output;
   uint8_t *p;
 
   for (i = 0; i < count; i++) {
     n += (new[i] != old[i] || (force_mask & (1u << i)) != 0);
   }
 
-  output = gpr_slice_malloc(9 + 6 * n);
-  p = fill_header(GPR_SLICE_START_PTR(output), 6 * n, 0);
+  output = grpc_slice_malloc(9 + 6 * n);
+  p = fill_header(GRPC_SLICE_START_PTR(output), 6 * n, 0);
 
   for (i = 0; i < count; i++) {
     if (new[i] != old[i] || (force_mask & (1u << i)) != 0) {
@@ -109,14 +109,14 @@ gpr_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
     }
   }
 
-  GPR_ASSERT(p == GPR_SLICE_END_PTR(output));
+  GPR_ASSERT(p == GRPC_SLICE_END_PTR(output));
 
   return output;
 }
 
-gpr_slice grpc_chttp2_settings_ack_create(void) {
-  gpr_slice output = gpr_slice_malloc(9);
-  fill_header(GPR_SLICE_START_PTR(output), 0, GRPC_CHTTP2_FLAG_ACK);
+grpc_slice grpc_chttp2_settings_ack_create(void) {
+  grpc_slice output = grpc_slice_malloc(9);
+  fill_header(GRPC_SLICE_START_PTR(output), 0, GRPC_CHTTP2_FLAG_ACK);
   return output;
 }
 
@@ -146,10 +146,10 @@ grpc_error *grpc_chttp2_settings_parser_begin_frame(
 grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, void *p,
                                               grpc_chttp2_transport *t,
                                               grpc_chttp2_stream *s,
-                                              gpr_slice slice, int is_last) {
+                                              grpc_slice slice, int is_last) {
   grpc_chttp2_settings_parser *parser = p;
-  const uint8_t *cur = GPR_SLICE_START_PTR(slice);
-  const uint8_t *end = GPR_SLICE_END_PTR(slice);
+  const uint8_t *cur = GRPC_SLICE_START_PTR(slice);
+  const uint8_t *end = GRPC_SLICE_END_PTR(slice);
   char *msg;
 
   if (parser->is_ack) {
@@ -164,7 +164,7 @@ grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, void *p,
           if (is_last) {
             memcpy(parser->target_settings, parser->incoming_settings,
                    GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t));
-            gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_settings_ack_create());
+            grpc_slice_buffer_add(&t->qbuf, grpc_chttp2_settings_ack_create());
           }
           return GRPC_ERROR_NONE;
         }
@@ -225,7 +225,7 @@ grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, void *p,
               case GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE:
                 grpc_chttp2_goaway_append(
                     t->last_new_stream_id, sp->error_value,
-                    gpr_slice_from_static_string("HTTP2 settings error"),
+                    grpc_slice_from_static_string("HTTP2 settings error"),
                     &t->qbuf);
                 gpr_asprintf(&msg, "invalid value %u passed for %s",
                              parser->value, sp->name);

src/core/ext/transport/chttp2/transport/frame_settings.h

@@ -34,8 +34,8 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
 
+#include <grpc/slice.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 
@@ -87,10 +87,10 @@ extern const grpc_chttp2_setting_parameters
     grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS];
 
 /* Create a settings frame by diffing old & new, and updating old to be new */
-gpr_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
-                                      uint32_t force_mask, size_t count);
+grpc_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new,
+                                       uint32_t force_mask, size_t count);
 /* Create an ack settings frame */
-gpr_slice grpc_chttp2_settings_ack_create(void);
+grpc_slice grpc_chttp2_settings_ack_create(void);
 
 grpc_error *grpc_chttp2_settings_parser_begin_frame(
     grpc_chttp2_settings_parser *parser, uint32_t length, uint8_t flags,
@@ -99,6 +99,6 @@ grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx,
                                               void *parser,
                                               grpc_chttp2_transport *t,
                                               grpc_chttp2_stream *s,
-                                              gpr_slice slice, int is_last);
+                                              grpc_slice slice, int is_last);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */

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

@@ -38,12 +38,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-gpr_slice grpc_chttp2_window_update_create(
+grpc_slice grpc_chttp2_window_update_create(
     uint32_t id, uint32_t window_update, grpc_transport_one_way_stats *stats) {
   static const size_t frame_size = 13;
-  gpr_slice slice = gpr_slice_malloc(frame_size);
+  grpc_slice slice = grpc_slice_malloc(frame_size);
   stats->header_bytes += frame_size;
-  uint8_t *p = GPR_SLICE_START_PTR(slice);
+  uint8_t *p = GRPC_SLICE_START_PTR(slice);
 
   GPR_ASSERT(window_update);
 
@@ -81,9 +81,9 @@ grpc_error *grpc_chttp2_window_update_parser_begin_frame(
 
 grpc_error *grpc_chttp2_window_update_parser_parse(
     grpc_exec_ctx *exec_ctx, void *parser, grpc_chttp2_transport *t,
-    grpc_chttp2_stream *s, gpr_slice slice, int is_last) {
-  uint8_t *const beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *const end = GPR_SLICE_END_PTR(slice);
+    grpc_chttp2_stream *s, grpc_slice slice, int is_last) {
+  uint8_t *const beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *const end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   grpc_chttp2_window_update_parser *p = parser;
 

src/core/ext/transport/chttp2/transport/frame_window_update.h

@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H
 
-#include <grpc/support/slice.h>
+#include <grpc/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/transport/transport.h"
@@ -45,13 +45,13 @@ typedef struct {
   uint32_t amount;
 } grpc_chttp2_window_update_parser;
 
-gpr_slice grpc_chttp2_window_update_create(uint32_t id, uint32_t window_delta,
-                                           grpc_transport_one_way_stats *stats);
+grpc_slice grpc_chttp2_window_update_create(
+    uint32_t id, uint32_t window_delta, grpc_transport_one_way_stats *stats);
 
 grpc_error *grpc_chttp2_window_update_parser_begin_frame(
     grpc_chttp2_window_update_parser *parser, uint32_t length, uint8_t flags);
 grpc_error *grpc_chttp2_window_update_parser_parse(
     grpc_exec_ctx *exec_ctx, void *parser, grpc_chttp2_transport *t,
-    grpc_chttp2_stream *s, gpr_slice slice, int is_last);
+    grpc_chttp2_stream *s, grpc_slice slice, int is_last);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H */

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

@@ -76,7 +76,7 @@ typedef struct {
   uint8_t seen_regular_header;
   /* output stream id */
   uint32_t stream_id;
-  gpr_slice_buffer *output;
+  grpc_slice_buffer *output;
   grpc_transport_one_way_stats *stats;
   /* maximum size of a frame */
   size_t max_frame_size;
@@ -104,7 +104,7 @@ static void finish_frame(framer_state *st, int is_header_boundary,
   type = st->is_first_frame ? GRPC_CHTTP2_FRAME_HEADER
                             : GRPC_CHTTP2_FRAME_CONTINUATION;
   fill_header(
-      GPR_SLICE_START_PTR(st->output->slices[st->header_idx]), type,
+      GRPC_SLICE_START_PTR(st->output->slices[st->header_idx]), type,
       st->stream_id, st->output->length - st->output_length_at_start_of_frame,
       (uint8_t)((is_last_in_stream ? GRPC_CHTTP2_DATA_FLAG_END_STREAM : 0) |
                 (is_header_boundary ? GRPC_CHTTP2_DATA_FLAG_END_HEADERS : 0)));
@@ -116,7 +116,7 @@ static void finish_frame(framer_state *st, int is_header_boundary,
    output before beginning */
 static void begin_frame(framer_state *st) {
   st->header_idx =
-      gpr_slice_buffer_add_indexed(st->output, gpr_slice_malloc(9));
+      grpc_slice_buffer_add_indexed(st->output, grpc_slice_malloc(9));
   st->output_length_at_start_of_frame = st->output->length;
 }
 
@@ -147,18 +147,18 @@ static void inc_filter(uint8_t idx, uint32_t *sum, uint8_t *elems) {
   }
 }
 
-static void add_header_data(framer_state *st, gpr_slice slice) {
-  size_t len = GPR_SLICE_LENGTH(slice);
+static void add_header_data(framer_state *st, grpc_slice slice) {
+  size_t len = GRPC_SLICE_LENGTH(slice);
   size_t remaining;
   if (len == 0) return;
   remaining = st->max_frame_size + st->output_length_at_start_of_frame -
               st->output->length;
   if (len <= remaining) {
     st->stats->header_bytes += len;
-    gpr_slice_buffer_add(st->output, slice);
+    grpc_slice_buffer_add(st->output, slice);
   } else {
     st->stats->header_bytes += remaining;
-    gpr_slice_buffer_add(st->output, gpr_slice_split_head(&slice, remaining));
+    grpc_slice_buffer_add(st->output, grpc_slice_split_head(&slice, remaining));
     finish_frame(st, 0, 0);
     begin_frame(st);
     add_header_data(st, slice);
@@ -167,7 +167,7 @@ static void add_header_data(framer_state *st, gpr_slice slice) {
 
 static uint8_t *add_tiny_header_data(framer_state *st, size_t len) {
   ensure_space(st, len);
-  return gpr_slice_buffer_tiny_add(st->output, len);
+  return grpc_slice_buffer_tiny_add(st->output, len);
 }
 
 static void evict_entry(grpc_chttp2_hpack_compressor *c) {
@@ -268,9 +268,10 @@ static void emit_indexed(grpc_chttp2_hpack_compressor *c, uint32_t elem_index,
                            len);
 }
 
-static gpr_slice get_wire_value(grpc_mdelem *elem, uint8_t *huffman_prefix) {
-  if (grpc_is_binary_header((const char *)GPR_SLICE_START_PTR(elem->key->slice),
-                            GPR_SLICE_LENGTH(elem->key->slice))) {
+static grpc_slice get_wire_value(grpc_mdelem *elem, uint8_t *huffman_prefix) {
+  if (grpc_is_binary_header(
+          (const char *)GRPC_SLICE_START_PTR(elem->key->slice),
+          GRPC_SLICE_LENGTH(elem->key->slice))) {
     *huffman_prefix = 0x80;
     return grpc_mdstr_as_base64_encoded_and_huffman_compressed(elem->value);
   }
@@ -284,8 +285,8 @@ static void emit_lithdr_incidx(grpc_chttp2_hpack_compressor *c,
                                framer_state *st) {
   uint32_t len_pfx = GRPC_CHTTP2_VARINT_LENGTH(key_index, 2);
   uint8_t huffman_prefix;
-  gpr_slice value_slice = get_wire_value(elem, &huffman_prefix);
-  size_t len_val = GPR_SLICE_LENGTH(value_slice);
+  grpc_slice value_slice = get_wire_value(elem, &huffman_prefix);
+  size_t len_val = GRPC_SLICE_LENGTH(value_slice);
   uint32_t len_val_len;
   GPR_ASSERT(len_val <= UINT32_MAX);
   len_val_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)len_val, 1);
@@ -293,7 +294,7 @@ static void emit_lithdr_incidx(grpc_chttp2_hpack_compressor *c,
                            add_tiny_header_data(st, len_pfx), len_pfx);
   GRPC_CHTTP2_WRITE_VARINT((uint32_t)len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, gpr_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref(value_slice));
 }
 
 static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
@@ -301,8 +302,8 @@ static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
                               framer_state *st) {
   uint32_t len_pfx = GRPC_CHTTP2_VARINT_LENGTH(key_index, 4);
   uint8_t huffman_prefix;
-  gpr_slice value_slice = get_wire_value(elem, &huffman_prefix);
-  size_t len_val = GPR_SLICE_LENGTH(value_slice);
+  grpc_slice value_slice = get_wire_value(elem, &huffman_prefix);
+  size_t len_val = GRPC_SLICE_LENGTH(value_slice);
   uint32_t len_val_len;
   GPR_ASSERT(len_val <= UINT32_MAX);
   len_val_len = GRPC_CHTTP2_VARINT_LENGTH((uint32_t)len_val, 1);
@@ -310,45 +311,45 @@ static void emit_lithdr_noidx(grpc_chttp2_hpack_compressor *c,
                            add_tiny_header_data(st, len_pfx), len_pfx);
   GRPC_CHTTP2_WRITE_VARINT((uint32_t)len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, gpr_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref(value_slice));
 }
 
 static void emit_lithdr_incidx_v(grpc_chttp2_hpack_compressor *c,
                                  grpc_mdelem *elem, framer_state *st) {
-  uint32_t len_key = (uint32_t)GPR_SLICE_LENGTH(elem->key->slice);
+  uint32_t len_key = (uint32_t)GRPC_SLICE_LENGTH(elem->key->slice);
   uint8_t huffman_prefix;
-  gpr_slice value_slice = get_wire_value(elem, &huffman_prefix);
-  uint32_t len_val = (uint32_t)GPR_SLICE_LENGTH(value_slice);
+  grpc_slice value_slice = get_wire_value(elem, &huffman_prefix);
+  uint32_t len_val = (uint32_t)GRPC_SLICE_LENGTH(value_slice);
   uint32_t len_key_len = GRPC_CHTTP2_VARINT_LENGTH(len_key, 1);
   uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
   GPR_ASSERT(len_key <= UINT32_MAX);
-  GPR_ASSERT(GPR_SLICE_LENGTH(value_slice) <= UINT32_MAX);
+  GPR_ASSERT(GRPC_SLICE_LENGTH(value_slice) <= UINT32_MAX);
   *add_tiny_header_data(st, 1) = 0x40;
   GRPC_CHTTP2_WRITE_VARINT(len_key, 1, 0x00,
                            add_tiny_header_data(st, len_key_len), len_key_len);
-  add_header_data(st, gpr_slice_ref(elem->key->slice));
+  add_header_data(st, grpc_slice_ref(elem->key->slice));
   GRPC_CHTTP2_WRITE_VARINT(len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, gpr_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref(value_slice));
 }
 
 static void emit_lithdr_noidx_v(grpc_chttp2_hpack_compressor *c,
                                 grpc_mdelem *elem, framer_state *st) {
-  uint32_t len_key = (uint32_t)GPR_SLICE_LENGTH(elem->key->slice);
+  uint32_t len_key = (uint32_t)GRPC_SLICE_LENGTH(elem->key->slice);
   uint8_t huffman_prefix;
-  gpr_slice value_slice = get_wire_value(elem, &huffman_prefix);
-  uint32_t len_val = (uint32_t)GPR_SLICE_LENGTH(value_slice);
+  grpc_slice value_slice = get_wire_value(elem, &huffman_prefix);
+  uint32_t len_val = (uint32_t)GRPC_SLICE_LENGTH(value_slice);
   uint32_t len_key_len = GRPC_CHTTP2_VARINT_LENGTH(len_key, 1);
   uint32_t len_val_len = GRPC_CHTTP2_VARINT_LENGTH(len_val, 1);
   GPR_ASSERT(len_key <= UINT32_MAX);
-  GPR_ASSERT(GPR_SLICE_LENGTH(value_slice) <= UINT32_MAX);
+  GPR_ASSERT(GRPC_SLICE_LENGTH(value_slice) <= UINT32_MAX);
   *add_tiny_header_data(st, 1) = 0x00;
   GRPC_CHTTP2_WRITE_VARINT(len_key, 1, 0x00,
                            add_tiny_header_data(st, len_key_len), len_key_len);
-  add_header_data(st, gpr_slice_ref(elem->key->slice));
+  add_header_data(st, grpc_slice_ref(elem->key->slice));
   GRPC_CHTTP2_WRITE_VARINT(len_val, 1, huffman_prefix,
                            add_tiny_header_data(st, len_val_len), len_val_len);
-  add_header_data(st, gpr_slice_ref(value_slice));
+  add_header_data(st, grpc_slice_ref(value_slice));
 }
 
 static void emit_advertise_table_size_change(grpc_chttp2_hpack_compressor *c,
@@ -373,8 +374,8 @@ static void hpack_enc(grpc_chttp2_hpack_compressor *c, grpc_mdelem *elem,
   uint32_t indices_key;
   int should_add_elem;
 
-  GPR_ASSERT(GPR_SLICE_LENGTH(elem->key->slice) > 0);
-  if (GPR_SLICE_START_PTR(elem->key->slice)[0] != ':') { /* regular header */
+  GPR_ASSERT(GRPC_SLICE_LENGTH(elem->key->slice) > 0);
+  if (GRPC_SLICE_START_PTR(elem->key->slice)[0] != ':') { /* regular header */
     st->seen_regular_header = 1;
   } else {
     GPR_ASSERT(
@@ -546,7 +547,7 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c,
                                grpc_metadata_batch *metadata, int is_eof,
                                size_t max_frame_size,
                                grpc_transport_one_way_stats *stats,
-                               gpr_slice_buffer *outbuf) {
+                               grpc_slice_buffer *outbuf) {
   framer_state st;
   grpc_linked_mdelem *l;
   gpr_timespec deadline;

src/core/ext/transport/chttp2/transport/hpack_encoder.h

@@ -34,9 +34,9 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H
 
+#include <grpc/slice.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
-#include <grpc/support/slice_buffer.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/metadata_batch.h"
@@ -93,6 +93,6 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c, uint32_t id,
                                grpc_metadata_batch *metadata, int is_eof,
                                size_t max_frame_size,
                                grpc_transport_one_way_stats *stats,
-                               gpr_slice_buffer *outbuf);
+                               grpc_slice_buffer *outbuf);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H */

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

@@ -1502,9 +1502,9 @@ static grpc_error *is_binary_indexed_header(grpc_chttp2_hpack_parser *p,
                            GRPC_ERROR_INT_INDEX, (intptr_t)p->index),
         GRPC_ERROR_INT_SIZE, (intptr_t)p->table.num_ents);
   }
-  *is =
-      grpc_is_binary_header((const char *)GPR_SLICE_START_PTR(elem->key->slice),
-                            GPR_SLICE_LENGTH(elem->key->slice));
+  *is = grpc_is_binary_header(
+      (const char *)GRPC_SLICE_START_PTR(elem->key->slice),
+      GRPC_SLICE_LENGTH(elem->key->slice));
   return GRPC_ERROR_NONE;
 }
 
@@ -1584,7 +1584,7 @@ static void force_client_rst_stream(grpc_exec_ctx *exec_ctx, void *sp,
   grpc_chttp2_stream *s = sp;
   grpc_chttp2_transport *t = s->t;
   if (!s->write_closed) {
-    gpr_slice_buffer_add(
+    grpc_slice_buffer_add(
         &t->qbuf, grpc_chttp2_rst_stream_create(s->id, GRPC_CHTTP2_NO_ERROR,
                                                 &s->stats.outgoing));
     grpc_chttp2_initiate_write(exec_ctx, t, false, "force_rst_stream");
@@ -1597,14 +1597,14 @@ grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx,
                                             void *hpack_parser,
                                             grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s,
-                                            gpr_slice slice, int is_last) {
+                                            grpc_slice slice, int is_last) {
   grpc_chttp2_hpack_parser *parser = hpack_parser;
   GPR_TIMER_BEGIN("grpc_chttp2_hpack_parser_parse", 0);
   if (s != NULL) {
-    s->stats.incoming.header_bytes += GPR_SLICE_LENGTH(slice);
+    s->stats.incoming.header_bytes += GRPC_SLICE_LENGTH(slice);
   }
   grpc_error *error = grpc_chttp2_hpack_parser_parse(
-      exec_ctx, parser, GPR_SLICE_START_PTR(slice), GPR_SLICE_END_PTR(slice));
+      exec_ctx, parser, GRPC_SLICE_START_PTR(slice), GRPC_SLICE_END_PTR(slice));
   if (error != GRPC_ERROR_NONE) {
     GPR_TIMER_END("grpc_chttp2_hpack_parser_parse", 0);
     return error;

src/core/ext/transport/chttp2/transport/hpack_parser.h

@@ -116,6 +116,6 @@ grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx,
                                             void *hpack_parser,
                                             grpc_chttp2_transport *t,
                                             grpc_chttp2_stream *s,
-                                            gpr_slice slice, int is_last);
+                                            grpc_slice slice, int is_last);
 
 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H */

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

@@ -226,8 +226,8 @@ grpc_mdelem *grpc_chttp2_hptbl_lookup(const grpc_chttp2_hptbl *tbl,
 /* Evict one element from the table */
 static void evict1(grpc_chttp2_hptbl *tbl) {
   grpc_mdelem *first_ent = tbl->ents[tbl->first_ent];
-  size_t elem_bytes = GPR_SLICE_LENGTH(first_ent->key->slice) +
-                      GPR_SLICE_LENGTH(first_ent->value->slice) +
+  size_t elem_bytes = GRPC_SLICE_LENGTH(first_ent->key->slice) +
+                      GRPC_SLICE_LENGTH(first_ent->value->slice) +
                       GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
   GPR_ASSERT(elem_bytes <= tbl->mem_used);
   tbl->mem_used -= (uint32_t)elem_bytes;
@@ -298,8 +298,8 @@ grpc_error *grpc_chttp2_hptbl_set_current_table_size(grpc_chttp2_hptbl *tbl,
 
 grpc_error *grpc_chttp2_hptbl_add(grpc_chttp2_hptbl *tbl, grpc_mdelem *md) {
   /* determine how many bytes of buffer this entry represents */
-  size_t elem_bytes = GPR_SLICE_LENGTH(md->key->slice) +
-                      GPR_SLICE_LENGTH(md->value->slice) +
+  size_t elem_bytes = GRPC_SLICE_LENGTH(md->key->slice) +
+                      GRPC_SLICE_LENGTH(md->value->slice) +
                       GRPC_CHTTP2_HPACK_ENTRY_OVERHEAD;
 
   if (tbl->current_table_bytes > tbl->max_bytes) {

src/core/ext/transport/chttp2/transport/hpack_table.h

@@ -34,8 +34,8 @@
 #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
 #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_TABLE_H
 
+#include <grpc/slice.h>
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/transport/metadata.h"
 

src/core/ext/transport/chttp2/transport/internal.h

@@ -170,14 +170,14 @@ struct grpc_chttp2_incoming_byte_stream {
   bool is_tail;
 
   gpr_mu slice_mu;  // protects slices, on_next
-  gpr_slice_buffer slices;
+  grpc_slice_buffer slices;
   grpc_closure *on_next;
-  gpr_slice *next;
+  grpc_slice *next;
   uint32_t remaining_bytes;
 
   struct {
     grpc_closure closure;
-    gpr_slice *slice;
+    grpc_slice *slice;
     size_t max_size_hint;
     grpc_closure *on_complete;
   } next_action;
@@ -219,7 +219,7 @@ struct grpc_chttp2_transport {
   grpc_closure read_action_locked;
 
   /** incoming read bytes */
-  gpr_slice_buffer read_buffer;
+  grpc_slice_buffer read_buffer;
 
   /** address to place a newly accepted stream - set and unset by
       grpc_chttp2_parsing_accept_stream; used by init_stream to
@@ -237,7 +237,7 @@ struct grpc_chttp2_transport {
   } channel_callback;
 
   /** data to write now */
-  gpr_slice_buffer outbuf;
+  grpc_slice_buffer outbuf;
   /** hpack encoding */
   grpc_chttp2_hpack_compressor hpack_compressor;
   int64_t outgoing_window;
@@ -245,7 +245,7 @@ struct grpc_chttp2_transport {
   uint8_t is_client;
 
   /** data to write next write */
-  gpr_slice_buffer qbuf;
+  grpc_slice_buffer qbuf;
 
   /** window available to announce to peer */
   int64_t announce_incoming_window;
@@ -314,12 +314,12 @@ struct grpc_chttp2_transport {
   grpc_chttp2_stream *incoming_stream;
   grpc_error *(*parser)(grpc_exec_ctx *exec_ctx, void *parser_user_data,
                         grpc_chttp2_transport *t, grpc_chttp2_stream *s,
-                        gpr_slice slice, int is_last);
+                        grpc_slice slice, int is_last);
 
   /* goaway data */
   grpc_status_code goaway_error;
   uint32_t goaway_last_stream_index;
-  gpr_slice goaway_text;
+  grpc_slice goaway_text;
 
   grpc_chttp2_write_cb *write_cb_pool;
 
@@ -374,7 +374,7 @@ struct grpc_chttp2_stream {
 
   grpc_byte_stream *fetching_send_message;
   uint32_t fetched_send_message_length;
-  gpr_slice fetching_slice;
+  grpc_slice fetching_slice;
   int64_t next_message_end_offset;
   int64_t flow_controlled_bytes_written;
   bool complete_fetch_covered_by_poller;
@@ -434,7 +434,7 @@ struct grpc_chttp2_stream {
   bool sent_trailing_metadata;
   /** how much window should we announce? */
   uint32_t announce_window;
-  gpr_slice_buffer flow_controlled_buffer;
+  grpc_slice_buffer flow_controlled_buffer;
 
   grpc_chttp2_write_cb *on_write_finished_cbs;
   grpc_chttp2_write_cb *finish_after_write;
@@ -466,7 +466,8 @@ void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
 /** Process one slice of incoming data; return 1 if the connection is still
     viable after reading, or 0 if the connection should be torn down */
 grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
-                                     grpc_chttp2_transport *t, gpr_slice slice);
+                                     grpc_chttp2_transport *t,
+                                     grpc_slice slice);
 
 bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport *t,
                                           grpc_chttp2_stream *s);
@@ -509,7 +510,7 @@ grpc_chttp2_stream *grpc_chttp2_parsing_accept_stream(grpc_exec_ctx *exec_ctx,
 void grpc_chttp2_add_incoming_goaway(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
                                      uint32_t goaway_error,
-                                     gpr_slice goaway_text);
+                                     grpc_slice goaway_text);
 
 void grpc_chttp2_parsing_become_skip_parser(grpc_exec_ctx *exec_ctx,
                                             grpc_chttp2_transport *t);
@@ -611,7 +612,7 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase,
 
 void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
                              grpc_chttp2_stream *stream,
-                             grpc_status_code status, gpr_slice *details);
+                             grpc_status_code status, grpc_slice *details);
 void grpc_chttp2_mark_stream_closed(grpc_exec_ctx *exec_ctx,
                                     grpc_chttp2_transport *t,
                                     grpc_chttp2_stream *s, int close_reads,
@@ -659,7 +660,7 @@ grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create(
     uint32_t frame_size, uint32_t flags);
 void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx,
                                            grpc_chttp2_incoming_byte_stream *bs,
-                                           gpr_slice slice);
+                                           grpc_slice slice);
 void grpc_chttp2_incoming_byte_stream_finished(
     grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs,
     grpc_error *error);

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

@@ -67,14 +67,14 @@ static grpc_error *init_skip_frame_parser(grpc_exec_ctx *exec_ctx,
                                           int is_header);
 
 static grpc_error *parse_frame_slice(grpc_exec_ctx *exec_ctx,
-                                     grpc_chttp2_transport *t, gpr_slice slice,
+                                     grpc_chttp2_transport *t, grpc_slice slice,
                                      int is_last);
 
 grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
                                      grpc_chttp2_transport *t,
-                                     gpr_slice slice) {
-  uint8_t *beg = GPR_SLICE_START_PTR(slice);
-  uint8_t *end = GPR_SLICE_END_PTR(slice);
+                                     grpc_slice slice) {
+  uint8_t *beg = GRPC_SLICE_START_PTR(slice);
+  uint8_t *end = GRPC_SLICE_END_PTR(slice);
   uint8_t *cur = beg;
   grpc_error *err;
 
@@ -229,10 +229,10 @@ grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
     case GRPC_DTS_FRAME:
       GPR_ASSERT(cur < end);
       if ((uint32_t)(end - cur) == t->incoming_frame_size) {
-        err = parse_frame_slice(exec_ctx, t,
-                                gpr_slice_sub_no_ref(slice, (size_t)(cur - beg),
-                                                     (size_t)(end - beg)),
-                                1);
+        err = parse_frame_slice(
+            exec_ctx, t, grpc_slice_sub_no_ref(slice, (size_t)(cur - beg),
+                                               (size_t)(end - beg)),
+            1);
         if (err != GRPC_ERROR_NONE) {
           return err;
         }
@@ -243,8 +243,8 @@ grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
         size_t cur_offset = (size_t)(cur - beg);
         err = parse_frame_slice(
             exec_ctx, t,
-            gpr_slice_sub_no_ref(slice, cur_offset,
-                                 cur_offset + t->incoming_frame_size),
+            grpc_slice_sub_no_ref(slice, cur_offset,
+                                  cur_offset + t->incoming_frame_size),
             1);
         if (err != GRPC_ERROR_NONE) {
           return err;
@@ -253,10 +253,10 @@ grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
         t->incoming_stream = NULL;
         goto dts_fh_0; /* loop */
       } else {
-        err = parse_frame_slice(exec_ctx, t,
-                                gpr_slice_sub_no_ref(slice, (size_t)(cur - beg),
-                                                     (size_t)(end - beg)),
-                                0);
+        err = parse_frame_slice(
+            exec_ctx, t, grpc_slice_sub_no_ref(slice, (size_t)(cur - beg),
+                                               (size_t)(end - beg)),
+            0);
         if (err != GRPC_ERROR_NONE) {
           return err;
         }
@@ -331,7 +331,7 @@ static grpc_error *init_frame_parser(grpc_exec_ctx *exec_ctx,
 
 static grpc_error *skip_parser(grpc_exec_ctx *exec_ctx, void *parser,
                                grpc_chttp2_transport *t, grpc_chttp2_stream *s,
-                               gpr_slice slice, int is_last) {
+                               grpc_slice slice, int is_last) {
   return GRPC_ERROR_NONE;
 }
 
@@ -430,7 +430,7 @@ error_handler:
     if (s != NULL) {
       grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, false, err);
     }
-    gpr_slice_buffer_add(
+    grpc_slice_buffer_add(
         &t->qbuf, grpc_chttp2_rst_stream_create(t->incoming_stream_id,
                                                 GRPC_CHTTP2_PROTOCOL_ERROR,
                                                 &s->stats.outgoing));
@@ -471,7 +471,8 @@ static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp,
                 grpc_mdstr_as_c_string(md->value));
         *cached_timeout = gpr_inf_future(GPR_TIMESPAN);
       }
-      grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
+      cached_timeout =
+          grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
     }
     grpc_chttp2_incoming_metadata_buffer_set_deadline(
         &s->metadata_buffer[0],
@@ -722,7 +723,7 @@ static grpc_error *init_settings_frame_parser(grpc_exec_ctx *exec_ctx,
 }
 
 static grpc_error *parse_frame_slice(grpc_exec_ctx *exec_ctx,
-                                     grpc_chttp2_transport *t, gpr_slice slice,
+                                     grpc_chttp2_transport *t, grpc_slice slice,
                                      int is_last) {
   grpc_chttp2_stream *s = t->incoming_stream;
   grpc_error *err = t->parser(exec_ctx, t->parser_data, t, s, slice, is_last);
@@ -737,7 +738,7 @@ static grpc_error *parse_frame_slice(grpc_exec_ctx *exec_ctx,
     grpc_chttp2_parsing_become_skip_parser(exec_ctx, t);
     if (s) {
       s->forced_close_error = err;
-      gpr_slice_buffer_add(
+      grpc_slice_buffer_add(
           &t->qbuf, grpc_chttp2_rst_stream_create(t->incoming_stream_id,
                                                   GRPC_CHTTP2_PROTOCOL_ERROR,
                                                   &s->stats.outgoing));

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

@@ -80,7 +80,7 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
   GPR_TIMER_BEGIN("grpc_chttp2_begin_write", 0);
 
   if (t->dirtied_local_settings && !t->sent_local_settings) {
-    gpr_slice_buffer_add(
+    grpc_slice_buffer_add(
         &t->outbuf,
         grpc_chttp2_settings_create(
             t->settings[GRPC_SENT_SETTINGS], t->settings[GRPC_LOCAL_SETTINGS],
@@ -91,7 +91,7 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
   }
 
   /* simple writes are queued to qbuf, and flushed here */
-  gpr_slice_buffer_move_into(&t->qbuf, &t->outbuf);
+  grpc_slice_buffer_move_into(&t->qbuf, &t->outbuf);
   GPR_ASSERT(t->qbuf.count == 0);
 
   grpc_chttp2_hpack_compressor_set_max_table_size(
@@ -130,9 +130,9 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
     /* send any window updates */
     if (s->announce_window > 0) {
       uint32_t announce = s->announce_window;
-      gpr_slice_buffer_add(&t->outbuf,
-                           grpc_chttp2_window_update_create(
-                               s->id, s->announce_window, &s->stats.outgoing));
+      grpc_slice_buffer_add(&t->outbuf,
+                            grpc_chttp2_window_update_create(
+                                s->id, s->announce_window, &s->stats.outgoing));
       GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", t, s, announce_window, announce);
     }
     if (sent_initial_metadata) {
@@ -162,9 +162,9 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
             s->send_trailing_metadata = NULL;
             s->sent_trailing_metadata = true;
             if (!t->is_client && !s->read_closed) {
-              gpr_slice_buffer_add(&t->outbuf, grpc_chttp2_rst_stream_create(
-                                                   s->id, GRPC_CHTTP2_NO_ERROR,
-                                                   &s->stats.outgoing));
+              grpc_slice_buffer_add(&t->outbuf, grpc_chttp2_rst_stream_create(
+                                                    s->id, GRPC_CHTTP2_NO_ERROR,
+                                                    &s->stats.outgoing));
             }
           }
           s->sending_bytes += send_bytes;
@@ -194,7 +194,7 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
         s->send_trailing_metadata = NULL;
         s->sent_trailing_metadata = true;
         if (!t->is_client && !s->read_closed) {
-          gpr_slice_buffer_add(
+          grpc_slice_buffer_add(
               &t->outbuf, grpc_chttp2_rst_stream_create(
                               s->id, GRPC_CHTTP2_NO_ERROR, &s->stats.outgoing));
         }
@@ -220,8 +220,8 @@ bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx,
     GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", t, announce_incoming_window,
                                      announced);
     grpc_transport_one_way_stats throwaway_stats;
-    gpr_slice_buffer_add(&t->outbuf, grpc_chttp2_window_update_create(
-                                         0, announced, &throwaway_stats));
+    grpc_slice_buffer_add(&t->outbuf, grpc_chttp2_window_update_create(
+                                          0, announced, &throwaway_stats));
   }
 
   GPR_TIMER_END("grpc_chttp2_begin_write", 0);
@@ -254,7 +254,7 @@ void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
     }
     GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:end");
   }
-  gpr_slice_buffer_reset_and_unref(&t->outbuf);
+  grpc_slice_buffer_reset_and_unref(&t->outbuf);
   GRPC_ERROR_UNREF(error);
   GPR_TIMER_END("grpc_chttp2_end_write", 0);
 }

src/core/ext/transport/cronet/transport/cronet_transport.c

@@ -34,14 +34,15 @@
 #include <string.h>
 
 #include <grpc/impl/codegen/port_platform.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
 #include "src/core/ext/transport/chttp2/transport/incoming_metadata.h"
+#include "src/core/lib/iomgr/endpoint.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/surface/channel.h"
@@ -130,7 +131,7 @@ struct read_state {
 
   /* vars for holding data destined for the application */
   struct grpc_slice_buffer_stream sbs;
-  gpr_slice_buffer read_slice_buffer;
+  grpc_slice_buffer read_slice_buffer;
 
   /* vars for trailing metadata */
   grpc_chttp2_incoming_metadata_buffer trailing_metadata;
@@ -517,11 +518,11 @@ static void on_response_trailers_received(
  Utility function that takes the data from s->write_slice_buffer and assembles
  into a contiguous byte stream with 5 byte gRPC header prepended.
 */
-static void create_grpc_frame(gpr_slice_buffer *write_slice_buffer,
+static void create_grpc_frame(grpc_slice_buffer *write_slice_buffer,
                               char **pp_write_buffer,
                               size_t *p_write_buffer_size) {
-  gpr_slice slice = gpr_slice_buffer_take_first(write_slice_buffer);
-  size_t length = GPR_SLICE_LENGTH(slice);
+  grpc_slice slice = grpc_slice_buffer_take_first(write_slice_buffer);
+  size_t length = GRPC_SLICE_LENGTH(slice);
   *p_write_buffer_size = length + GRPC_HEADER_SIZE_IN_BYTES;
   /* This is freed in the on_write_completed callback */
   char *write_buffer = gpr_malloc(length + GRPC_HEADER_SIZE_IN_BYTES);
@@ -534,7 +535,7 @@ static void create_grpc_frame(gpr_slice_buffer *write_slice_buffer,
   *p++ = (uint8_t)(length >> 8);
   *p++ = (uint8_t)(length);
   /* append actual data */
-  memcpy(p, GPR_SLICE_START_PTR(slice), length);
+  memcpy(p, GRPC_SLICE_START_PTR(slice), length);
 }
 
 /*
@@ -610,6 +611,16 @@ static int parse_grpc_header(const uint8_t *data) {
   return length;
 }
 
+static bool header_has_authority(grpc_linked_mdelem *head) {
+  while (head != NULL) {
+    if (head->md->key == GRPC_MDSTR_AUTHORITY) {
+      return true;
+    }
+    head = head->next;
+  }
+  return false;
+}
+
 /*
   Op Execution: Decide if one of the actions contained in the stream op can be
   executed. This is the heart of the state machine.
@@ -817,9 +828,9 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
       result = NO_ACTION_POSSIBLE;
       CRONET_LOG(GPR_DEBUG, "Stream is either cancelled or failed.");
     } else {
-      gpr_slice_buffer write_slice_buffer;
-      gpr_slice slice;
-      gpr_slice_buffer_init(&write_slice_buffer);
+      grpc_slice_buffer write_slice_buffer;
+      grpc_slice slice;
+      grpc_slice_buffer_init(&write_slice_buffer);
       grpc_byte_stream_next(NULL, stream_op->send_message, &slice,
                             stream_op->send_message->length, NULL);
       /* Check that compression flag is OFF. We don't support compression yet.
@@ -828,7 +839,7 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
         gpr_log(GPR_ERROR, "Compression is not supported");
         GPR_ASSERT(stream_op->send_message->flags == 0);
       }
-      gpr_slice_buffer_add(&write_slice_buffer, slice);
+      grpc_slice_buffer_add(&write_slice_buffer, slice);
       if (write_slice_buffer.count != 1) {
         /* Empty request not handled yet */
         gpr_log(GPR_ERROR, "Empty request is not supported");
@@ -891,7 +902,7 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
         } else {
           stream_state->rs.remaining_bytes = 0;
           CRONET_LOG(GPR_DEBUG, "read operation complete. Empty response.");
-          gpr_slice_buffer_init(&stream_state->rs.read_slice_buffer);
+          grpc_slice_buffer_init(&stream_state->rs.read_slice_buffer);
           grpc_slice_buffer_stream_init(&stream_state->rs.sbs,
                                         &stream_state->rs.read_slice_buffer, 0);
           *((grpc_byte_buffer **)stream_op->recv_message) =
@@ -918,15 +929,15 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
       }
     } else if (stream_state->rs.remaining_bytes == 0) {
       CRONET_LOG(GPR_DEBUG, "read operation complete");
-      gpr_slice read_data_slice =
-          gpr_slice_malloc((uint32_t)stream_state->rs.length_field);
-      uint8_t *dst_p = GPR_SLICE_START_PTR(read_data_slice);
+      grpc_slice read_data_slice =
+          grpc_slice_malloc((uint32_t)stream_state->rs.length_field);
+      uint8_t *dst_p = GRPC_SLICE_START_PTR(read_data_slice);
       memcpy(dst_p, stream_state->rs.read_buffer,
              (size_t)stream_state->rs.length_field);
       free_read_buffer(s);
-      gpr_slice_buffer_init(&stream_state->rs.read_slice_buffer);
-      gpr_slice_buffer_add(&stream_state->rs.read_slice_buffer,
-                           read_data_slice);
+      grpc_slice_buffer_init(&stream_state->rs.read_slice_buffer);
+      grpc_slice_buffer_add(&stream_state->rs.read_slice_buffer,
+                            read_data_slice);
       grpc_slice_buffer_stream_init(&stream_state->rs.sbs,
                                     &stream_state->rs.read_slice_buffer, 0);
       *((grpc_byte_buffer **)stream_op->recv_message) =
@@ -981,11 +992,18 @@ static enum e_op_result execute_stream_op(grpc_exec_ctx *exec_ctx,
   } else if (stream_op->on_complete &&
              op_can_be_run(stream_op, stream_state, &oas->state,
                            OP_ON_COMPLETE)) {
-    /* All actions in this stream_op are complete. Call the on_complete callback
-     */
     CRONET_LOG(GPR_DEBUG, "running: %p  OP_ON_COMPLETE", oas);
-    grpc_exec_ctx_sched(exec_ctx, stream_op->on_complete, GRPC_ERROR_NONE,
-                        NULL);
+    if (stream_state->state_op_done[OP_CANCEL_ERROR] ||
+        stream_state->state_callback_received[OP_FAILED]) {
+      grpc_exec_ctx_sched(exec_ctx, stream_op->on_complete,
+                          GRPC_ERROR_CANCELLED, NULL);
+    } else {
+      /* All actions in this stream_op are complete. Call the on_complete
+       * callback
+       */
+      grpc_exec_ctx_sched(exec_ctx, stream_op->on_complete, GRPC_ERROR_NONE,
+                          NULL);
+    }
     oas->state.state_op_done[OP_ON_COMPLETE] = true;
     oas->done = true;
     /* reset any send message state, only if this ON_COMPLETE is about a send.
@@ -1042,7 +1060,31 @@ static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
   s->curr_gs = gs;
   memcpy(&s->curr_ct, gt, sizeof(grpc_cronet_transport));
   add_to_storage(s, op);
-  execute_from_storage(s);
+  if (op->send_initial_metadata &&
+      header_has_authority(op->send_initial_metadata->list.head)) {
+    /* Cronet does not support :authority header field. We cancel the call when
+       this field is present in metadata */
+    cronet_bidirectional_stream_header_array header_array;
+    cronet_bidirectional_stream_header *header;
+    cronet_bidirectional_stream cbs;
+    CRONET_LOG(GPR_DEBUG,
+               ":authority header is provided but not supported;"
+               " cancel operations");
+    /* Notify application that operation is cancelled by forging trailers */
+    header_array.count = 1;
+    header_array.capacity = 1;
+    header_array.headers =
+        gpr_malloc(sizeof(cronet_bidirectional_stream_header));
+    header = (cronet_bidirectional_stream_header *)header_array.headers;
+    header->key = "grpc-status";
+    header->value = "1"; /* Return status GRPC_STATUS_CANCELLED */
+    cbs.annotation = (void *)s;
+    s->state.state_op_done[OP_CANCEL_ERROR] = true;
+    on_response_trailers_received(&cbs, &header_array);
+    gpr_free(header_array.headers);
+  } else {
+    execute_from_storage(s);
+  }
 }
 
 static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
@@ -1054,6 +1096,11 @@ static char *get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *gt) {
   return NULL;
 }
 
+static grpc_endpoint *get_endpoint(grpc_exec_ctx *exec_ctx,
+                                   grpc_transport *gt) {
+  return NULL;
+}
+
 static void perform_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt,
                        grpc_transport_op *op) {}
 
@@ -1066,4 +1113,5 @@ const grpc_transport_vtable grpc_cronet_vtable = {sizeof(stream_obj),
                                                   perform_op,
                                                   destroy_stream,
                                                   destroy_transport,
-                                                  get_peer};
+                                                  get_peer,
+                                                  get_endpoint};

src/core/lib/channel/channel_args.c

@@ -298,6 +298,12 @@ uint32_t grpc_channel_args_compression_algorithm_get_states(
   }
 }
 
+grpc_channel_args *grpc_channel_args_set_socket_mutator(
+    grpc_channel_args *a, grpc_socket_mutator *mutator) {
+  grpc_arg tmp = grpc_socket_mutator_to_arg(mutator);
+  return grpc_channel_args_copy_and_add(a, &tmp, 1);
+}
+
 int grpc_channel_args_compare(const grpc_channel_args *a,
                               const grpc_channel_args *b) {
   int c = GPR_ICMP(a->num_args, b->num_args);

src/core/lib/channel/channel_args.h

@@ -36,6 +36,7 @@
 
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
+#include "src/core/lib/iomgr/socket_mutator.h"
 
 // Channel args are intentionally immutable, to avoid the need for locking.
 
@@ -100,6 +101,13 @@ uint32_t grpc_channel_args_compression_algorithm_get_states(
 int grpc_channel_args_compare(const grpc_channel_args *a,
                               const grpc_channel_args *b);
 
+/** Returns a channel arg instance with socket mutator added. The socket mutator
+ * will perform its mutate_fd method on all file descriptors used by the
+ * channel.
+ * If \a a is non-MULL, its args are copied. */
+grpc_channel_args *grpc_channel_args_set_socket_mutator(
+    grpc_channel_args *a, grpc_socket_mutator *mutator);
+
 /** Returns the value of argument \a name from \a args, or NULL if not found. */
 const grpc_arg *grpc_channel_args_find(const grpc_channel_args *args,
                                        const char *name);

src/core/lib/channel/channel_stack.c

@@ -162,7 +162,8 @@ grpc_error *grpc_call_stack_init(
     grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
     int initial_refs, grpc_iomgr_cb_func destroy, void *destroy_arg,
     grpc_call_context_element *context, const void *transport_server_data,
-    grpc_mdstr *path, gpr_timespec deadline, grpc_call_stack *call_stack) {
+    grpc_mdstr *path, gpr_timespec start_time, gpr_timespec deadline,
+    grpc_call_stack *call_stack) {
   grpc_channel_element *channel_elems = CHANNEL_ELEMS_FROM_STACK(channel_stack);
   grpc_call_element_args args;
   size_t count = channel_stack->count;
@@ -179,7 +180,7 @@ grpc_error *grpc_call_stack_init(
 
   /* init per-filter data */
   grpc_error *first_error = GRPC_ERROR_NONE;
-  args.start_time = gpr_now(GPR_CLOCK_MONOTONIC);
+  args.start_time = start_time;
   for (i = 0; i < count; i++) {
     args.call_stack = call_stack;
     args.server_transport_data = transport_server_data;
@@ -255,6 +256,13 @@ char *grpc_call_next_get_peer(grpc_exec_ctx *exec_ctx,
   return next_elem->filter->get_peer(exec_ctx, next_elem);
 }
 
+void grpc_channel_next_get_info(grpc_exec_ctx *exec_ctx,
+                                grpc_channel_element *elem,
+                                const grpc_channel_info *channel_info) {
+  grpc_channel_element *next_elem = elem + 1;
+  next_elem->filter->get_channel_info(exec_ctx, next_elem, channel_info);
+}
+
 void grpc_channel_next_op(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                           grpc_transport_op *op) {
   grpc_channel_element *next_elem = elem + 1;
@@ -288,7 +296,7 @@ void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx,
 void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
                                                 grpc_call_element *elem,
                                                 grpc_status_code status,
-                                                gpr_slice *optional_message) {
+                                                grpc_slice *optional_message) {
   grpc_transport_stream_op *op = gpr_malloc(sizeof(*op));
   memset(op, 0, sizeof(*op));
   op->on_complete = grpc_closure_create(destroy_op, op);
@@ -300,7 +308,7 @@ void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
 void grpc_call_element_send_close_with_message(grpc_exec_ctx *exec_ctx,
                                                grpc_call_element *elem,
                                                grpc_status_code status,
-                                               gpr_slice *optional_message) {
+                                               grpc_slice *optional_message) {
   grpc_transport_stream_op *op = gpr_malloc(sizeof(*op));
   memset(op, 0, sizeof(*op));
   op->on_complete = grpc_closure_create(destroy_op, op);

src/core/lib/channel/channel_stack.h

@@ -156,6 +156,10 @@ typedef struct {
   /* Implement grpc_call_get_peer() */
   char *(*get_peer)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
 
+  /* Implement grpc_channel_get_info() */
+  void (*get_channel_info)(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
+                           const grpc_channel_info *channel_info);
+
   /* The name of this filter */
   const char *name;
 } grpc_channel_filter;
@@ -227,7 +231,8 @@ grpc_error *grpc_call_stack_init(
     grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
     int initial_refs, grpc_iomgr_cb_func destroy, void *destroy_arg,
     grpc_call_context_element *context, const void *transport_server_data,
-    grpc_mdstr *path, gpr_timespec deadline, grpc_call_stack *call_stack);
+    grpc_mdstr *path, gpr_timespec start_time, gpr_timespec deadline,
+    grpc_call_stack *call_stack);
 /* Set a pollset or a pollset_set for a call stack: must occur before the first
  * op is started */
 void grpc_call_stack_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
@@ -273,6 +278,10 @@ void grpc_channel_next_op(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
                           grpc_transport_op *op);
 /* Pass through a request to get_peer to the next child element */
 char *grpc_call_next_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem);
+/* Pass through a request to get_channel_info() to the next child element */
+void grpc_channel_next_get_info(grpc_exec_ctx *exec_ctx,
+                                grpc_channel_element *elem,
+                                const grpc_channel_info *channel_info);
 
 /* Given the top element of a channel stack, get the channel stack itself */
 grpc_channel_stack *grpc_channel_stack_from_top_element(
@@ -289,12 +298,12 @@ void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx,
 void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx,
                                                 grpc_call_element *cur_elem,
                                                 grpc_status_code status,
-                                                gpr_slice *optional_message);
+                                                grpc_slice *optional_message);
 
 void grpc_call_element_send_close_with_message(grpc_exec_ctx *exec_ctx,
                                                grpc_call_element *cur_elem,
                                                grpc_status_code status,
-                                               gpr_slice *optional_message);
+                                               grpc_slice *optional_message);
 
 extern int grpc_trace_channel;
 

src/core/lib/channel/compress_filter.c

@@ -35,9 +35,9 @@
 #include <string.h>
 
 #include <grpc/compression.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/channel/compress_filter.h"
@@ -50,7 +50,7 @@
 int grpc_compression_trace = 0;
 
 typedef struct call_data {
-  gpr_slice_buffer slices; /**< Buffers up input slices to be compressed */
+  grpc_slice_buffer slices; /**< Buffers up input slices to be compressed */
   grpc_linked_mdelem compression_algorithm_storage;
   grpc_linked_mdelem accept_encoding_storage;
   uint32_t remaining_slice_bytes;
@@ -63,7 +63,7 @@ typedef struct call_data {
   grpc_transport_stream_op *send_op;
   uint32_t send_length;
   uint32_t send_flags;
-  gpr_slice incoming_slice;
+  grpc_slice incoming_slice;
   grpc_slice_buffer_stream replacement_stream;
   grpc_closure *post_send;
   grpc_closure send_done;
@@ -111,9 +111,13 @@ static grpc_mdelem *compression_md_filter(void *user_data, grpc_mdelem *md) {
   return md;
 }
 
-static int skip_compression(grpc_call_element *elem) {
+static int skip_compression(grpc_call_element *elem, uint32_t flags) {
   call_data *calld = elem->call_data;
   channel_data *channeld = elem->channel_data;
+
+  if (flags & (GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_INTERNAL_COMPRESS)) {
+    return 1;
+  }
   if (calld->has_compression_algorithm) {
     if (calld->compression_algorithm == GRPC_COMPRESS_NONE) {
       return 1;
@@ -157,7 +161,7 @@ static void continue_send_message(grpc_exec_ctx *exec_ctx,
 static void send_done(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
-  gpr_slice_buffer_reset_and_unref(&calld->slices);
+  grpc_slice_buffer_reset_and_unref(&calld->slices);
   calld->post_send->cb(exec_ctx, calld->post_send->cb_arg, error);
 }
 
@@ -165,8 +169,8 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
                                 grpc_call_element *elem) {
   call_data *calld = elem->call_data;
   int did_compress;
-  gpr_slice_buffer tmp;
-  gpr_slice_buffer_init(&tmp);
+  grpc_slice_buffer tmp;
+  grpc_slice_buffer_init(&tmp);
   did_compress =
       grpc_msg_compress(calld->compression_algorithm, &calld->slices, &tmp);
   if (did_compress) {
@@ -181,7 +185,7 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
                          " bytes (%.2f%% savings)",
               algo_name, before_size, after_size, 100 * savings_ratio);
     }
-    gpr_slice_buffer_swap(&calld->slices, &tmp);
+    grpc_slice_buffer_swap(&calld->slices, &tmp);
     calld->send_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
   } else {
     if (grpc_compression_trace) {
@@ -195,7 +199,7 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
     }
   }
 
-  gpr_slice_buffer_destroy(&tmp);
+  grpc_slice_buffer_destroy(&tmp);
 
   grpc_slice_buffer_stream_init(&calld->replacement_stream, &calld->slices,
                                 calld->send_flags);
@@ -209,7 +213,7 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx,
 static void got_slice(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
-  gpr_slice_buffer_add(&calld->slices, calld->incoming_slice);
+  grpc_slice_buffer_add(&calld->slices, calld->incoming_slice);
   if (calld->send_length == calld->slices.length) {
     finish_send_message(exec_ctx, elem);
   } else {
@@ -223,7 +227,7 @@ static void continue_send_message(grpc_exec_ctx *exec_ctx,
   while (grpc_byte_stream_next(exec_ctx, calld->send_op->send_message,
                                &calld->incoming_slice, ~(size_t)0,
                                &calld->got_slice)) {
-    gpr_slice_buffer_add(&calld->slices, calld->incoming_slice);
+    grpc_slice_buffer_add(&calld->slices, calld->incoming_slice);
     if (calld->send_length == calld->slices.length) {
       finish_send_message(exec_ctx, elem);
       break;
@@ -241,8 +245,8 @@ static void compress_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
   if (op->send_initial_metadata) {
     process_send_initial_metadata(elem, op->send_initial_metadata);
   }
-  if (op->send_message != NULL && !skip_compression(elem) &&
-      0 == (op->send_message->flags & GRPC_WRITE_NO_COMPRESS)) {
+  if (op->send_message != NULL &&
+      !skip_compression(elem, op->send_message->flags)) {
     calld->send_op = op;
     calld->send_length = op->send_message->length;
     calld->send_flags = op->send_message->flags;
@@ -263,7 +267,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   call_data *calld = elem->call_data;
 
   /* initialize members */
-  gpr_slice_buffer_init(&calld->slices);
+  grpc_slice_buffer_init(&calld->slices);
   calld->has_compression_algorithm = 0;
   grpc_closure_init(&calld->got_slice, got_slice, elem);
   grpc_closure_init(&calld->send_done, send_done, elem);
@@ -277,7 +281,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               void *ignored) {
   /* grab pointers to our data from the call element */
   call_data *calld = elem->call_data;
-  gpr_slice_buffer_destroy(&calld->slices);
+  grpc_slice_buffer_destroy(&calld->slices);
 }
 
 /* Constructor for channel_data */
@@ -328,4 +332,5 @@ const grpc_channel_filter grpc_compress_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "compress"};

src/core/lib/channel/connected_channel.c

@@ -38,9 +38,9 @@
 #include <string.h>
 
 #include <grpc/byte_buffer.h>
+#include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/transport.h"
@@ -134,6 +134,11 @@ static char *con_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
   return grpc_transport_get_peer(exec_ctx, chand->transport);
 }
 
+/* No-op. */
+static void con_get_channel_info(grpc_exec_ctx *exec_ctx,
+                                 grpc_channel_element *elem,
+                                 const grpc_channel_info *channel_info) {}
+
 static const grpc_channel_filter connected_channel_filter = {
     con_start_transport_stream_op,
     con_start_transport_op,
@@ -145,6 +150,7 @@ static const grpc_channel_filter connected_channel_filter = {
     init_channel_elem,
     destroy_channel_elem,
     con_get_peer,
+    con_get_channel_info,
     "connected",
 };
 

src/core/lib/channel/deadline_filter.c

@@ -55,10 +55,10 @@ static void timer_callback(grpc_exec_ctx* exec_ctx, void* arg,
   deadline_state->timer_pending = false;
   gpr_mu_unlock(&deadline_state->timer_mu);
   if (error != GRPC_ERROR_CANCELLED) {
-    gpr_slice msg = gpr_slice_from_static_string("Deadline Exceeded");
+    grpc_slice msg = grpc_slice_from_static_string("Deadline Exceeded");
     grpc_call_element_send_cancel_with_message(
         exec_ctx, elem, GRPC_STATUS_DEADLINE_EXCEEDED, &msg);
-    gpr_slice_unref(msg);
+    grpc_slice_unref(msg);
   }
   GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack, "deadline_timer");
 }
@@ -316,6 +316,7 @@ const grpc_channel_filter grpc_client_deadline_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "deadline",
 };
 
@@ -330,5 +331,6 @@ const grpc_channel_filter grpc_server_deadline_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "deadline",
 };

src/core/lib/channel/handshaker.c

@@ -62,7 +62,7 @@ void grpc_handshaker_do_handshake(grpc_exec_ctx* exec_ctx,
                                   grpc_handshaker* handshaker,
                                   grpc_endpoint* endpoint,
                                   grpc_channel_args* args,
-                                  gpr_slice_buffer* read_buffer,
+                                  grpc_slice_buffer* read_buffer,
                                   gpr_timespec deadline,
                                   grpc_tcp_server_acceptor* acceptor,
                                   grpc_handshaker_done_cb cb, void* user_data) {
@@ -146,8 +146,8 @@ void grpc_handshake_manager_shutdown(grpc_exec_ctx* exec_ctx,
 static void call_next_handshaker(grpc_exec_ctx* exec_ctx,
                                  grpc_endpoint* endpoint,
                                  grpc_channel_args* args,
-                                 gpr_slice_buffer* read_buffer, void* user_data,
-                                 grpc_error* error) {
+                                 grpc_slice_buffer* read_buffer,
+                                 void* user_data, grpc_error* error) {
   grpc_handshake_manager* mgr = user_data;
   GPR_ASSERT(mgr->state != NULL);
   GPR_ASSERT(mgr->state->index < mgr->count);
@@ -183,8 +183,8 @@ void grpc_handshake_manager_do_handshake(
     gpr_timespec deadline, grpc_tcp_server_acceptor* acceptor,
     grpc_handshaker_done_cb cb, void* user_data) {
   grpc_channel_args* args_copy = grpc_channel_args_copy(args);
-  gpr_slice_buffer* read_buffer = gpr_malloc(sizeof(*read_buffer));
-  gpr_slice_buffer_init(read_buffer);
+  grpc_slice_buffer* read_buffer = gpr_malloc(sizeof(*read_buffer));
+  grpc_slice_buffer_init(read_buffer);
   if (mgr->count == 0) {
     // No handshakers registered, so we just immediately call the done
     // callback with the passed-in endpoint.

src/core/lib/channel/handshaker.h

@@ -59,7 +59,7 @@ typedef struct grpc_handshaker grpc_handshaker;
 typedef void (*grpc_handshaker_done_cb)(grpc_exec_ctx* exec_ctx,
                                         grpc_endpoint* endpoint,
                                         grpc_channel_args* args,
-                                        gpr_slice_buffer* read_buffer,
+                                        grpc_slice_buffer* read_buffer,
                                         void* user_data, grpc_error* error);
 
 struct grpc_handshaker_vtable {
@@ -77,7 +77,7 @@ struct grpc_handshaker_vtable {
   /// \a acceptor will be NULL for client-side handshakers.
   void (*do_handshake)(grpc_exec_ctx* exec_ctx, grpc_handshaker* handshaker,
                        grpc_endpoint* endpoint, grpc_channel_args* args,
-                       gpr_slice_buffer* read_buffer, gpr_timespec deadline,
+                       grpc_slice_buffer* read_buffer, gpr_timespec deadline,
                        grpc_tcp_server_acceptor* acceptor,
                        grpc_handshaker_done_cb cb, void* user_data);
 };
@@ -103,7 +103,7 @@ void grpc_handshaker_do_handshake(grpc_exec_ctx* exec_ctx,
                                   grpc_handshaker* handshaker,
                                   grpc_endpoint* endpoint,
                                   grpc_channel_args* args,
-                                  gpr_slice_buffer* read_buffer,
+                                  grpc_slice_buffer* read_buffer,
                                   gpr_timespec deadline,
                                   grpc_tcp_server_acceptor* acceptor,
                                   grpc_handshaker_done_cb cb, void* user_data);

src/core/lib/channel/http_client_filter.c

@@ -36,7 +36,7 @@
 #include <grpc/support/string_util.h>
 #include <string.h>
 #include "src/core/lib/profiling/timers.h"
-#include "src/core/lib/support/percent_encoding.h"
+#include "src/core/lib/slice/percent_encoding.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/static_metadata.h"
 #include "src/core/lib/transport/transport_impl.h"
@@ -64,9 +64,9 @@ typedef struct call_data {
   grpc_transport_stream_op send_op;
   uint32_t send_length;
   uint32_t send_flags;
-  gpr_slice incoming_slice;
+  grpc_slice incoming_slice;
   grpc_slice_buffer_stream replacement_stream;
-  gpr_slice_buffer slices;
+  grpc_slice_buffer slices;
   /* flag that indicates that all slices of send_messages aren't availble */
   bool send_message_blocked;
 
@@ -105,16 +105,16 @@ static grpc_mdelem *client_recv_filter(void *user_data, grpc_mdelem *md) {
     char *message_string;
     gpr_asprintf(&message_string, "Received http2 header with status: %s",
                  grpc_mdstr_as_c_string(md->value));
-    gpr_slice message = gpr_slice_from_copied_string(message_string);
+    grpc_slice message = grpc_slice_from_copied_string(message_string);
     gpr_free(message_string);
     grpc_call_element_send_close_with_message(a->exec_ctx, a->elem,
                                               GRPC_STATUS_CANCELLED, &message);
     return NULL;
   } else if (md->key == GRPC_MDSTR_GRPC_MESSAGE) {
-    gpr_slice pct_decoded_msg =
-        gpr_permissive_percent_decode_slice(md->value->slice);
-    if (gpr_slice_is_equivalent(pct_decoded_msg, md->value->slice)) {
-      gpr_slice_unref(pct_decoded_msg);
+    grpc_slice pct_decoded_msg =
+        grpc_permissive_percent_decode_slice(md->value->slice);
+    if (grpc_slice_is_equivalent(pct_decoded_msg, md->value->slice)) {
+      grpc_slice_unref(pct_decoded_msg);
       return md;
     } else {
       return grpc_mdelem_from_metadata_strings(
@@ -183,7 +183,7 @@ static void hc_on_complete(grpc_exec_ctx *exec_ctx, void *user_data,
 static void send_done(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
-  gpr_slice_buffer_reset_and_unref(&calld->slices);
+  grpc_slice_buffer_reset_and_unref(&calld->slices);
   calld->post_send->cb(exec_ctx, calld->post_send->cb_arg, error);
 }
 
@@ -204,10 +204,10 @@ static void continue_send_message(grpc_exec_ctx *exec_ctx,
   while (grpc_byte_stream_next(exec_ctx, calld->send_op.send_message,
                                &calld->incoming_slice, ~(size_t)0,
                                &calld->got_slice)) {
-    memcpy(wrptr, GPR_SLICE_START_PTR(calld->incoming_slice),
-           GPR_SLICE_LENGTH(calld->incoming_slice));
-    wrptr += GPR_SLICE_LENGTH(calld->incoming_slice);
-    gpr_slice_buffer_add(&calld->slices, calld->incoming_slice);
+    memcpy(wrptr, GRPC_SLICE_START_PTR(calld->incoming_slice),
+           GRPC_SLICE_LENGTH(calld->incoming_slice));
+    wrptr += GRPC_SLICE_LENGTH(calld->incoming_slice);
+    grpc_slice_buffer_add(&calld->slices, calld->incoming_slice);
     if (calld->send_length == calld->slices.length) {
       calld->send_message_blocked = false;
       break;
@@ -219,7 +219,7 @@ static void got_slice(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) {
   grpc_call_element *elem = elemp;
   call_data *calld = elem->call_data;
   calld->send_message_blocked = false;
-  gpr_slice_buffer_add(&calld->slices, calld->incoming_slice);
+  grpc_slice_buffer_add(&calld->slices, calld->incoming_slice);
   if (calld->send_length == calld->slices.length) {
     /* Pass down the original send_message op that was blocked.*/
     grpc_slice_buffer_stream_init(&calld->replacement_stream, &calld->slices,
@@ -347,7 +347,7 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   calld->on_done_recv_trailing_metadata = NULL;
   calld->on_complete = NULL;
   calld->payload_bytes = NULL;
-  gpr_slice_buffer_init(&calld->slices);
+  grpc_slice_buffer_init(&calld->slices);
   grpc_closure_init(&calld->hc_on_recv_initial_metadata,
                     hc_on_recv_initial_metadata, elem);
   grpc_closure_init(&calld->hc_on_recv_trailing_metadata,
@@ -363,7 +363,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                               const grpc_call_final_info *final_info,
                               void *ignored) {
   call_data *calld = elem->call_data;
-  gpr_slice_buffer_destroy(&calld->slices);
+  grpc_slice_buffer_destroy(&calld->slices);
 }
 
 static grpc_mdelem *scheme_from_args(const grpc_channel_args *args) {
@@ -487,4 +487,5 @@ const grpc_channel_filter grpc_http_client_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "http-client"};

src/core/lib/channel/http_server_filter.c

@@ -69,7 +69,7 @@ typedef struct call_data {
   grpc_closure *recv_message_ready;
   grpc_closure *on_complete;
   grpc_byte_stream **pp_recv_message;
-  gpr_slice_buffer read_slice_buffer;
+  grpc_slice_buffer read_slice_buffer;
   grpc_slice_buffer_stream read_stream;
 
   /** Receive closures are chained: we inject this closure as the on_done_recv
@@ -180,9 +180,8 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) {
     /* Retrieve the payload from the value of the 'grpc-internal-payload-bin'
        header field */
     calld->seen_payload_bin = 1;
-    gpr_slice_buffer_init(&calld->read_slice_buffer);
-    gpr_slice_buffer_add(&calld->read_slice_buffer,
-                         gpr_slice_ref(md->value->slice));
+    grpc_slice_buffer_add(&calld->read_slice_buffer,
+                          grpc_slice_ref(md->value->slice));
     grpc_slice_buffer_stream_init(&calld->read_stream,
                                   &calld->read_slice_buffer, 0);
     return NULL;
@@ -338,13 +337,17 @@ static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
   grpc_closure_init(&calld->hs_on_recv, hs_on_recv, elem);
   grpc_closure_init(&calld->hs_on_complete, hs_on_complete, elem);
   grpc_closure_init(&calld->hs_recv_message_ready, hs_recv_message_ready, elem);
+  grpc_slice_buffer_init(&calld->read_slice_buffer);
   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,
-                              void *ignored) {}
+                              void *ignored) {
+  call_data *calld = elem->call_data;
+  grpc_slice_buffer_destroy(&calld->read_slice_buffer);
+}
 
 /* Constructor for channel_data */
 static void init_channel_elem(grpc_exec_ctx *exec_ctx,
@@ -368,4 +371,5 @@ const grpc_channel_filter grpc_http_server_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "http-server"};

src/core/lib/channel/message_size_filter.c

@@ -141,7 +141,7 @@ static void start_transport_stream_op(grpc_exec_ctx* exec_ctx,
     char* message_string;
     gpr_asprintf(&message_string, "Sent message larger than max (%u vs. %d)",
                  op->send_message->length, calld->max_send_size);
-    gpr_slice message = gpr_slice_from_copied_string(message_string);
+    grpc_slice message = grpc_slice_from_copied_string(message_string);
     gpr_free(message_string);
     grpc_call_element_send_close_with_message(
         exec_ctx, elem, GRPC_STATUS_INVALID_ARGUMENT, &message);
@@ -248,4 +248,5 @@ const grpc_channel_filter grpc_message_size_filter = {
     init_channel_elem,
     destroy_channel_elem,
     grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
     "message_size"};

src/core/lib/compression/message_compress.c

@@ -42,31 +42,31 @@
 
 #define OUTPUT_BLOCK_SIZE 1024
 
-static int zlib_body(z_stream* zs, gpr_slice_buffer* input,
-                     gpr_slice_buffer* output,
+static int zlib_body(z_stream* zs, grpc_slice_buffer* input,
+                     grpc_slice_buffer* output,
                      int (*flate)(z_stream* zs, int flush)) {
   int r;
   int flush;
   size_t i;
-  gpr_slice outbuf = gpr_slice_malloc(OUTPUT_BLOCK_SIZE);
+  grpc_slice outbuf = grpc_slice_malloc(OUTPUT_BLOCK_SIZE);
   const uInt uint_max = ~(uInt)0;
 
-  GPR_ASSERT(GPR_SLICE_LENGTH(outbuf) <= uint_max);
-  zs->avail_out = (uInt)GPR_SLICE_LENGTH(outbuf);
-  zs->next_out = GPR_SLICE_START_PTR(outbuf);
+  GPR_ASSERT(GRPC_SLICE_LENGTH(outbuf) <= uint_max);
+  zs->avail_out = (uInt)GRPC_SLICE_LENGTH(outbuf);
+  zs->next_out = GRPC_SLICE_START_PTR(outbuf);
   flush = Z_NO_FLUSH;
   for (i = 0; i < input->count; i++) {
     if (i == input->count - 1) flush = Z_FINISH;
-    GPR_ASSERT(GPR_SLICE_LENGTH(input->slices[i]) <= uint_max);
-    zs->avail_in = (uInt)GPR_SLICE_LENGTH(input->slices[i]);
-    zs->next_in = GPR_SLICE_START_PTR(input->slices[i]);
+    GPR_ASSERT(GRPC_SLICE_LENGTH(input->slices[i]) <= uint_max);
+    zs->avail_in = (uInt)GRPC_SLICE_LENGTH(input->slices[i]);
+    zs->next_in = GRPC_SLICE_START_PTR(input->slices[i]);
     do {
       if (zs->avail_out == 0) {
-        gpr_slice_buffer_add_indexed(output, outbuf);
-        outbuf = gpr_slice_malloc(OUTPUT_BLOCK_SIZE);
-        GPR_ASSERT(GPR_SLICE_LENGTH(outbuf) <= uint_max);
-        zs->avail_out = (uInt)GPR_SLICE_LENGTH(outbuf);
-        zs->next_out = GPR_SLICE_START_PTR(outbuf);
+        grpc_slice_buffer_add_indexed(output, outbuf);
+        outbuf = grpc_slice_malloc(OUTPUT_BLOCK_SIZE);
+        GPR_ASSERT(GRPC_SLICE_LENGTH(outbuf) <= uint_max);
+        zs->avail_out = (uInt)GRPC_SLICE_LENGTH(outbuf);
+        zs->next_out = GRPC_SLICE_START_PTR(outbuf);
       }
       r = flate(zs, flush);
       if (r < 0 && r != Z_BUF_ERROR /* not fatal */) {
@@ -82,12 +82,12 @@ static int zlib_body(z_stream* zs, gpr_slice_buffer* input,
 
   GPR_ASSERT(outbuf.refcount);
   outbuf.data.refcounted.length -= zs->avail_out;
-  gpr_slice_buffer_add_indexed(output, outbuf);
+  grpc_slice_buffer_add_indexed(output, outbuf);
 
   return 1;
 
 error:
-  gpr_slice_unref(outbuf);
+  grpc_slice_unref(outbuf);
   return 0;
 }
 
@@ -97,7 +97,7 @@ static void* zalloc_gpr(void* opaque, unsigned int items, unsigned int size) {
 
 static void zfree_gpr(void* opaque, void* address) { gpr_free(address); }
 
-static int zlib_compress(gpr_slice_buffer* input, gpr_slice_buffer* output,
+static int zlib_compress(grpc_slice_buffer* input, grpc_slice_buffer* output,
                          int gzip) {
   z_stream zs;
   int r;
@@ -113,7 +113,7 @@ static int zlib_compress(gpr_slice_buffer* input, gpr_slice_buffer* output,
   r = zlib_body(&zs, input, output, deflate) && output->length < input->length;
   if (!r) {
     for (i = count_before; i < output->count; i++) {
-      gpr_slice_unref(output->slices[i]);
+      grpc_slice_unref(output->slices[i]);
     }
     output->count = count_before;
     output->length = length_before;
@@ -122,7 +122,7 @@ static int zlib_compress(gpr_slice_buffer* input, gpr_slice_buffer* output,
   return r;
 }
 
-static int zlib_decompress(gpr_slice_buffer* input, gpr_slice_buffer* output,
+static int zlib_decompress(grpc_slice_buffer* input, grpc_slice_buffer* output,
                            int gzip) {
   z_stream zs;
   int r;
@@ -137,7 +137,7 @@ static int zlib_decompress(gpr_slice_buffer* input, gpr_slice_buffer* output,
   r = zlib_body(&zs, input, output, inflate);
   if (!r) {
     for (i = count_before; i < output->count; i++) {
-      gpr_slice_unref(output->slices[i]);
+      grpc_slice_unref(output->slices[i]);
     }
     output->count = count_before;
     output->length = length_before;
@@ -146,16 +146,16 @@ static int zlib_decompress(gpr_slice_buffer* input, gpr_slice_buffer* output,
   return r;
 }
 
-static int copy(gpr_slice_buffer* input, gpr_slice_buffer* output) {
+static int copy(grpc_slice_buffer* input, grpc_slice_buffer* output) {
   size_t i;
   for (i = 0; i < input->count; i++) {
-    gpr_slice_buffer_add(output, gpr_slice_ref(input->slices[i]));
+    grpc_slice_buffer_add(output, grpc_slice_ref(input->slices[i]));
   }
   return 1;
 }
 
 static int compress_inner(grpc_compression_algorithm algorithm,
-                          gpr_slice_buffer* input, gpr_slice_buffer* output) {
+                          grpc_slice_buffer* input, grpc_slice_buffer* output) {
   switch (algorithm) {
     case GRPC_COMPRESS_NONE:
       /* the fallback path always needs to be send uncompressed: we simply
@@ -173,7 +173,7 @@ static int compress_inner(grpc_compression_algorithm algorithm,
 }
 
 int grpc_msg_compress(grpc_compression_algorithm algorithm,
-                      gpr_slice_buffer* input, gpr_slice_buffer* output) {
+                      grpc_slice_buffer* input, grpc_slice_buffer* output) {
   if (!compress_inner(algorithm, input, output)) {
     copy(input, output);
     return 0;
@@ -182,7 +182,7 @@ int grpc_msg_compress(grpc_compression_algorithm algorithm,
 }
 
 int grpc_msg_decompress(grpc_compression_algorithm algorithm,
-                        gpr_slice_buffer* input, gpr_slice_buffer* output) {
+                        grpc_slice_buffer* input, grpc_slice_buffer* output) {
   switch (algorithm) {
     case GRPC_COMPRESS_NONE:
       return copy(input, output);

src/core/lib/compression/message_compress.h

@@ -35,18 +35,18 @@
 #define GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
 
 #include <grpc/compression.h>
-#include <grpc/support/slice_buffer.h>
+#include <grpc/slice_buffer.h>
 
 /* compress 'input' to 'output' using 'algorithm'.
    On success, appends compressed slices to output and returns 1.
    On failure, appends uncompressed slices to output and returns 0. */
 int grpc_msg_compress(grpc_compression_algorithm algorithm,
-                      gpr_slice_buffer* input, gpr_slice_buffer* output);
+                      grpc_slice_buffer* input, grpc_slice_buffer* output);
 
 /* decompress 'input' to 'output' using 'algorithm'.
    On success, appends slices to output and returns 1.
    On failure, output is unchanged, and returns 0. */
 int grpc_msg_decompress(grpc_compression_algorithm algorithm,
-                        gpr_slice_buffer* input, gpr_slice_buffer* output);
+                        grpc_slice_buffer* input, grpc_slice_buffer* output);
 
 #endif /* GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H */

src/core/lib/http/format_request.c

@@ -37,8 +37,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include <grpc/slice.h>
 #include <grpc/support/alloc.h>
-#include <grpc/support/slice.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 #include "src/core/lib/support/string.h"
@@ -65,7 +65,8 @@ static void fill_common_header(const grpc_httpcli_request *request,
   }
 }
 
-gpr_slice grpc_httpcli_format_get_request(const grpc_httpcli_request *request) {
+grpc_slice grpc_httpcli_format_get_request(
+    const grpc_httpcli_request *request) {
   gpr_strvec out;
   char *flat;
   size_t flat_len;
@@ -78,12 +79,12 @@ gpr_slice grpc_httpcli_format_get_request(const grpc_httpcli_request *request) {
   flat = gpr_strvec_flatten(&out, &flat_len);
   gpr_strvec_destroy(&out);
 
-  return gpr_slice_new(flat, flat_len, gpr_free);
+  return grpc_slice_new(flat, flat_len, gpr_free);
 }
 
-gpr_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
-                                           const char *body_bytes,
-                                           size_t body_size) {
+grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
+                                            const char *body_bytes,
+                                            size_t body_size) {
   gpr_strvec out;
   char *tmp;
   size_t out_len;
@@ -117,10 +118,10 @@ gpr_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
     out_len += body_size;
   }
 
-  return gpr_slice_new(tmp, out_len, gpr_free);
+  return grpc_slice_new(tmp, out_len, gpr_free);
 }
 
-gpr_slice grpc_httpcli_format_connect_request(
+grpc_slice grpc_httpcli_format_connect_request(
     const grpc_httpcli_request *request) {
   gpr_strvec out;
   gpr_strvec_init(&out);
@@ -130,5 +131,5 @@ gpr_slice grpc_httpcli_format_connect_request(
   size_t flat_len;
   char *flat = gpr_strvec_flatten(&out, &flat_len);
   gpr_strvec_destroy(&out);
-  return gpr_slice_new(flat, flat_len, gpr_free);
+  return grpc_slice_new(flat, flat_len, gpr_free);
 }