Merge branch 'master' into tjagtap_src_core_lib_s

BUILD

@@ -127,6 +127,11 @@ config_setting(
     values = {"apple_platform_type": "tvos"},
 )
 
+config_setting(
+    name = "visionos",
+    values = {"apple_platform_type": "visionos"},
+)
+
 config_setting(
     name = "watchos",
     values = {"apple_platform_type": "watchos"},
@@ -239,7 +244,7 @@ python_config_settings()
 # This should be updated along with build_handwritten.yaml
 g_stands_for = "grateful"  # @unused
 
-core_version = "40.0.0"  # @unused
+core_version = "41.0.0"  # @unused
 
 version = "1.64.0-dev"  # @unused
 
@@ -291,6 +296,7 @@ GRPC_PUBLIC_HDRS = [
     "include/grpc/grpc_posix.h",
     "include/grpc/grpc_security.h",
     "include/grpc/grpc_security_constants.h",
+    "include/grpc/passive_listener.h",
     "include/grpc/slice.h",
     "include/grpc/slice_buffer.h",
     "include/grpc/status.h",
@@ -452,6 +458,7 @@ GRPCXX_PUBLIC_HDRS = [
     "include/grpcpp/impl/service_type.h",
     "include/grpcpp/impl/status.h",
     "include/grpcpp/impl/sync.h",
+    "include/grpcpp/passive_listener.h",
     "include/grpcpp/resource_quota.h",
     "include/grpcpp/security/audit_logging.h",
     "include/grpcpp/security/tls_crl_provider.h",
@@ -781,6 +788,7 @@ grpc_cc_library(
         "absl/base:log_severity",
         "absl/functional:any_invocable",
         "absl/log",
+        "absl/log:globals",
         "absl/memory",
         "absl/random",
         "absl/status",
@@ -876,7 +884,7 @@ grpc_cc_library(
 
 grpc_cc_library(
     name = "grpc_public_hdrs",
-    hdrs = GRPC_PUBLIC_HDRS,
+    hdrs = GRPC_PUBLIC_HDRS + GRPC_PUBLIC_EVENT_ENGINE_HDRS,
     external_deps = [
         "absl/status:statusor",
         "absl/strings",
@@ -2488,6 +2496,7 @@ grpc_cc_library(
         "//src/core:grpc_backend_metric_provider",
         "//src/core:grpc_crl_provider",
         "//src/core:grpc_service_config",
+        "//src/core:grpc_transport_chttp2_server",
         "//src/core:grpc_transport_inproc",
         "//src/core:json",
         "//src/core:json_reader",
@@ -2546,6 +2555,7 @@ grpc_cc_library(
         "grpc_security_base",
         "grpc_service_config_impl",
         "grpc_trace",
+        "grpc_transport_chttp2",
         "grpc_unsecure",
         "grpcpp_backend_metric_recorder",
         "grpcpp_call_metric_recorder",
@@ -2567,6 +2577,7 @@ grpc_cc_library(
         "//src/core:grpc_backend_metric_provider",
         "//src/core:grpc_insecure_credentials",
         "//src/core:grpc_service_config",
+        "//src/core:grpc_transport_chttp2_server",
         "//src/core:grpc_transport_inproc",
         "//src/core:ref_counted",
         "//src/core:resource_quota",

CMakeLists.txt

@@ -26,8 +26,8 @@ cmake_minimum_required(VERSION 3.13)
 
 set(PACKAGE_NAME          "grpc")
 set(PACKAGE_VERSION       "1.64.0-dev")
-set(gRPC_CORE_VERSION     "40.0.0")
+set(gRPC_CORE_VERSION     "41.0.0")
-set(gRPC_CORE_SOVERSION   "40")
+set(gRPC_CORE_SOVERSION   "41")
 set(gRPC_CPP_VERSION      "1.64.0-dev")
 set(gRPC_CPP_SOVERSION    "1.64")
 set(PACKAGE_STRING        "${PACKAGE_NAME} ${PACKAGE_VERSION}")
@@ -1540,7 +1540,6 @@ if(gRPC_BUILD_TESTS)
   add_dependencies(buildtests_cxx xds_audit_logger_registry_test)
   add_dependencies(buildtests_cxx xds_bootstrap_test)
   add_dependencies(buildtests_cxx xds_certificate_provider_test)
-  add_dependencies(buildtests_cxx xds_channel_stack_modifier_test)
   add_dependencies(buildtests_cxx xds_client_test)
   if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     add_dependencies(buildtests_cxx xds_cluster_end2end_test)
@@ -1750,6 +1749,7 @@ target_link_libraries(gpr
   absl::flags_marshalling
   absl::any_invocable
   absl::check
+  absl::log_globals
   absl::log
   absl::memory
   absl::random_random
@@ -2746,6 +2746,7 @@ foreach(_hdr
   include/grpc/impl/propagation_bits.h
   include/grpc/impl/slice_type.h
   include/grpc/load_reporting.h
+  include/grpc/passive_listener.h
   include/grpc/slice.h
   include/grpc/slice_buffer.h
   include/grpc/status.h
@@ -3446,6 +3447,7 @@ foreach(_hdr
   include/grpc/impl/propagation_bits.h
   include/grpc/impl/slice_type.h
   include/grpc/load_reporting.h
+  include/grpc/passive_listener.h
   include/grpc/slice.h
   include/grpc/slice_buffer.h
   include/grpc/status.h
@@ -4314,6 +4316,7 @@ foreach(_hdr
   include/grpcpp/impl/service_type.h
   include/grpcpp/impl/status.h
   include/grpcpp/impl/sync.h
+  include/grpcpp/passive_listener.h
   include/grpcpp/resource_quota.h
   include/grpcpp/security/audit_logging.h
   include/grpcpp/security/auth_context.h
@@ -5054,6 +5057,7 @@ foreach(_hdr
   include/grpcpp/impl/service_type.h
   include/grpcpp/impl/status.h
   include/grpcpp/impl/sync.h
+  include/grpcpp/passive_listener.h
   include/grpcpp/resource_quota.h
   include/grpcpp/security/audit_logging.h
   include/grpcpp/security/auth_context.h
@@ -5504,6 +5508,7 @@ foreach(_hdr
   include/grpc/impl/propagation_bits.h
   include/grpc/impl/slice_type.h
   include/grpc/load_reporting.h
+  include/grpc/passive_listener.h
   include/grpc/slice.h
   include/grpc/slice_buffer.h
   include/grpc/status.h
@@ -26832,6 +26837,7 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/xds/v3/orca_load_report.grpc.pb.cc
     ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/xds/v3/orca_load_report.pb.h
     ${_gRPC_PROTO_GENS_DIR}/src/proto/grpc/testing/xds/v3/orca_load_report.grpc.pb.h
+    test/core/event_engine/event_engine_test_utils.cc
     test/core/test_util/cmdline.cc
     test/core/test_util/fuzzer_util.cc
     test/core/test_util/grpc_profiler.cc
@@ -33191,105 +33197,6 @@ target_link_libraries(xds_certificate_provider_test
 )
 
 
-endif()
-if(gRPC_BUILD_TESTS)
-
-add_executable(xds_channel_stack_modifier_test
-  src/core/ext/filters/logging/logging_filter.cc
-  src/cpp/client/call_credentials.cc
-  src/cpp/client/channel_cc.cc
-  src/cpp/client/channel_credentials.cc
-  src/cpp/client/client_callback.cc
-  src/cpp/client/client_context.cc
-  src/cpp/client/client_interceptor.cc
-  src/cpp/client/client_stats_interceptor.cc
-  src/cpp/client/create_channel.cc
-  src/cpp/client/create_channel_internal.cc
-  src/cpp/client/create_channel_posix.cc
-  src/cpp/client/insecure_credentials.cc
-  src/cpp/client/secure_credentials.cc
-  src/cpp/common/alarm.cc
-  src/cpp/common/auth_property_iterator.cc
-  src/cpp/common/channel_arguments.cc
-  src/cpp/common/completion_queue_cc.cc
-  src/cpp/common/resource_quota_cc.cc
-  src/cpp/common/rpc_method.cc
-  src/cpp/common/secure_auth_context.cc
-  src/cpp/common/secure_create_auth_context.cc
-  src/cpp/common/tls_certificate_provider.cc
-  src/cpp/common/tls_certificate_verifier.cc
-  src/cpp/common/tls_credentials_options.cc
-  src/cpp/common/validate_service_config.cc
-  src/cpp/common/version_cc.cc
-  src/cpp/ext/filters/census/client_filter.cc
-  src/cpp/ext/filters/census/context.cc
-  src/cpp/ext/filters/census/grpc_plugin.cc
-  src/cpp/ext/filters/census/measures.cc
-  src/cpp/ext/filters/census/rpc_encoding.cc
-  src/cpp/ext/filters/census/server_call_tracer.cc
-  src/cpp/ext/filters/census/views.cc
-  src/cpp/server/async_generic_service.cc
-  src/cpp/server/backend_metric_recorder.cc
-  src/cpp/server/channel_argument_option.cc
-  src/cpp/server/create_default_thread_pool.cc
-  src/cpp/server/external_connection_acceptor_impl.cc
-  src/cpp/server/health/default_health_check_service.cc
-  src/cpp/server/health/health_check_service.cc
-  src/cpp/server/health/health_check_service_server_builder_option.cc
-  src/cpp/server/insecure_server_credentials.cc
-  src/cpp/server/secure_server_credentials.cc
-  src/cpp/server/server_builder.cc
-  src/cpp/server/server_callback.cc
-  src/cpp/server/server_cc.cc
-  src/cpp/server/server_context.cc
-  src/cpp/server/server_credentials.cc
-  src/cpp/server/server_posix.cc
-  src/cpp/thread_manager/thread_manager.cc
-  src/cpp/util/byte_buffer_cc.cc
-  src/cpp/util/status.cc
-  src/cpp/util/string_ref.cc
-  src/cpp/util/time_cc.cc
-  test/core/server/xds_channel_stack_modifier_test.cc
-)
-if(WIN32 AND MSVC)
-  if(BUILD_SHARED_LIBS)
-    target_compile_definitions(xds_channel_stack_modifier_test
-    PRIVATE
-      "GPR_DLL_IMPORTS"
-      "GRPC_DLL_IMPORTS"
-    )
-  endif()
-endif()
-target_compile_features(xds_channel_stack_modifier_test PUBLIC cxx_std_14)
-target_include_directories(xds_channel_stack_modifier_test
-  PRIVATE
-    ${CMAKE_CURRENT_SOURCE_DIR}
-    ${CMAKE_CURRENT_SOURCE_DIR}/include
-    ${_gRPC_ADDRESS_SORTING_INCLUDE_DIR}
-    ${_gRPC_RE2_INCLUDE_DIR}
-    ${_gRPC_SSL_INCLUDE_DIR}
-    ${_gRPC_UPB_GENERATED_DIR}
-    ${_gRPC_UPB_GRPC_GENERATED_DIR}
-    ${_gRPC_UPB_INCLUDE_DIR}
-    ${_gRPC_XXHASH_INCLUDE_DIR}
-    ${_gRPC_ZLIB_INCLUDE_DIR}
-    third_party/googletest/googletest/include
-    third_party/googletest/googletest
-    third_party/googletest/googlemock/include
-    third_party/googletest/googlemock
-    ${_gRPC_PROTO_GENS_DIR}
-)
-
-target_link_libraries(xds_channel_stack_modifier_test
-  ${_gRPC_ALLTARGETS_LIBRARIES}
-  gtest
-  absl::endian
-  absl::int128
-  ${_gRPC_PROTOBUF_LIBRARIES}
-  grpc_test_util
-)
-
-
 endif()
 if(gRPC_BUILD_TESTS)
 
@@ -37019,7 +36926,7 @@ generate_pkgconfig(
   "gpr"
   "gRPC platform support library"
   "${gRPC_CORE_VERSION}"
-  "absl_any_invocable absl_base absl_check absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_log absl_log_severity absl_memory absl_optional absl_random_random absl_status absl_str_format absl_strings absl_synchronization absl_time absl_variant"
+  "absl_any_invocable absl_base absl_check absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_log absl_log_globals absl_log_severity absl_memory absl_optional absl_random_random absl_status absl_str_format absl_strings absl_synchronization absl_time absl_variant"
   ""
   "-lgpr"
   ""
@@ -37030,7 +36937,7 @@ generate_pkgconfig(
   "gRPC"
   "high performance general RPC framework"
   "${gRPC_CORE_VERSION}"
-  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr"
+  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_globals absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr"
   "libcares openssl re2 zlib"
   "-lgrpc"
   "-laddress_sorting -lupb_textformat_lib -lupb_json_lib -lupb_message_lib -lupb_mem_lib -lupb_base_lib -lutf8_range_lib"
@@ -37041,7 +36948,7 @@ generate_pkgconfig(
   "gRPC unsecure"
   "high performance general RPC framework without SSL"
   "${gRPC_CORE_VERSION}"
-  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr"
+  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_globals absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr"
   "libcares zlib"
   "-lgrpc_unsecure"
   "-laddress_sorting -lupb_message_lib -lupb_mem_lib -lupb_base_lib -lutf8_range_lib"
@@ -37052,7 +36959,7 @@ generate_pkgconfig(
   "gRPC++"
   "C++ wrapper for gRPC"
   "${gRPC_CPP_VERSION}"
-  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr grpc"
+  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_globals absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr grpc"
   "libcares openssl re2 zlib"
   "-lgrpc++"
   "-laddress_sorting -lupb_textformat_lib -lupb_json_lib -lupb_message_lib -lupb_mem_lib -lupb_base_lib -lutf8_range_lib"
@@ -37063,7 +36970,7 @@ generate_pkgconfig(
   "gRPC++ unsecure"
   "C++ wrapper for gRPC without SSL"
   "${gRPC_CPP_VERSION}"
-  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr grpc_unsecure"
+  "absl_algorithm_container absl_any_invocable absl_base absl_bind_front absl_check absl_cleanup absl_config absl_cord absl_core_headers absl_flags absl_flags_marshalling absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_inlined_vector absl_log absl_log_globals absl_log_severity absl_memory absl_no_destructor absl_optional absl_random_bit_gen_ref absl_random_distributions absl_random_random absl_span absl_status absl_statusor absl_str_format absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant gpr grpc_unsecure"
   "libcares zlib"
   "-lgrpc++_unsecure"
   "-laddress_sorting -lupb_message_lib -lupb_mem_lib -lupb_base_lib -lutf8_range_lib"

Makefile

@@ -367,7 +367,7 @@ E = @echo
 Q = @
 endif
 
-CORE_VERSION = 40.0.0
+CORE_VERSION = 41.0.0
 CPP_VERSION = 1.64.0-dev
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
@@ -404,7 +404,7 @@ SHARED_EXT_CORE = dll
 SHARED_EXT_CPP = dll
 
 SHARED_PREFIX =
-SHARED_VERSION_CORE = -40
+SHARED_VERSION_CORE = -41
 SHARED_VERSION_CPP = -1
 else ifeq ($(SYSTEM),Darwin)
 EXECUTABLE_SUFFIX =
@@ -1775,6 +1775,7 @@ PUBLIC_HEADERS_C += \
     include/grpc/impl/propagation_bits.h \
     include/grpc/impl/slice_type.h \
     include/grpc/load_reporting.h \
+    include/grpc/passive_listener.h \
     include/grpc/slice.h \
     include/grpc/slice_buffer.h \
     include/grpc/status.h \
@@ -1835,8 +1836,8 @@ $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE): $(LIBGRPC_
 ifeq ($(SYSTEM),Darwin)
 	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -install_name $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) -dynamiclib -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libcares.a $(OPENSSL_MERGE_LIBS) $(ZLIB_MERGE_LIBS) $(LDLIBS_SECURE) $(LDLIBS)
 else
-	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.40 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libcares.a $(OPENSSL_MERGE_LIBS) $(ZLIB_MERGE_LIBS) $(LDLIBS_SECURE) $(LDLIBS)
+	$(Q) $(LDXX) $(LDFLAGS) -L$(LIBDIR)/$(CONFIG) -shared -Wl,-soname,libgrpc.so.41 -o $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBGRPC_OBJS) $(LIBDIR)/$(CONFIG)/libcares.a $(OPENSSL_MERGE_LIBS) $(ZLIB_MERGE_LIBS) $(LDLIBS_SECURE) $(LDLIBS)
-	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.40
+	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so.41
 	$(Q) ln -sf $(SHARED_PREFIX)grpc$(SHARED_VERSION_CORE).$(SHARED_EXT_CORE) $(LIBDIR)/$(CONFIG)/libgrpc$(SHARED_VERSION_CORE).so
 endif
 endif

Package.swift

@@ -93,6 +93,7 @@ let package = Package(
         "include/grpc/impl/propagation_bits.h",
         "include/grpc/impl/slice_type.h",
         "include/grpc/load_reporting.h",
+        "include/grpc/passive_listener.h",
         "include/grpc/slice.h",
         "include/grpc/slice_buffer.h",
         "include/grpc/status.h",

build_autogenerated.yaml

@@ -130,6 +130,7 @@ libs:
   - absl/flags:marshalling
   - absl/functional:any_invocable
   - absl/log:check
+  - absl/log:globals
   - absl/log:log
   - absl/memory:memory
   - absl/random:random
@@ -197,6 +198,7 @@ libs:
   - include/grpc/impl/propagation_bits.h
   - include/grpc/impl/slice_type.h
   - include/grpc/load_reporting.h
+  - include/grpc/passive_listener.h
   - include/grpc/slice.h
   - include/grpc/slice_buffer.h
   - include/grpc/status.h
@@ -2181,6 +2183,7 @@ libs:
   - include/grpc/impl/propagation_bits.h
   - include/grpc/impl/slice_type.h
   - include/grpc/load_reporting.h
+  - include/grpc/passive_listener.h
   - include/grpc/slice.h
   - include/grpc/slice_buffer.h
   - include/grpc/status.h
@@ -3590,7 +3593,6 @@ libs:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -3786,6 +3788,7 @@ libs:
   - include/grpcpp/impl/service_type.h
   - include/grpcpp/impl/status.h
   - include/grpcpp/impl/sync.h
+  - include/grpcpp/passive_listener.h
   - include/grpcpp/resource_quota.h
   - include/grpcpp/security/audit_logging.h
   - include/grpcpp/security/auth_context.h
@@ -4013,7 +4016,6 @@ libs:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -4214,6 +4216,7 @@ libs:
   - include/grpcpp/impl/service_type.h
   - include/grpcpp/impl/status.h
   - include/grpcpp/impl/sync.h
+  - include/grpcpp/passive_listener.h
   - include/grpcpp/resource_quota.h
   - include/grpcpp/security/audit_logging.h
   - include/grpcpp/security/auth_context.h
@@ -4362,6 +4365,7 @@ libs:
   - include/grpc/impl/propagation_bits.h
   - include/grpc/impl/slice_type.h
   - include/grpc/load_reporting.h
+  - include/grpc/passive_listener.h
   - include/grpc/slice.h
   - include/grpc/slice_buffer.h
   - include/grpc/status.h
@@ -5116,7 +5120,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5187,7 +5190,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5276,7 +5278,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5340,7 +5341,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5531,7 +5531,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5647,7 +5646,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5689,7 +5687,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5750,7 +5747,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5886,7 +5882,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -5925,7 +5920,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -6249,7 +6243,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -7274,7 +7267,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -7492,7 +7484,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -7599,7 +7590,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -7629,7 +7619,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -8041,7 +8030,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -8097,7 +8085,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -8264,7 +8251,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -8959,7 +8945,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -9016,7 +9001,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -9048,7 +9032,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -9078,7 +9061,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -9442,7 +9424,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10073,7 +10054,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10303,7 +10283,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10344,7 +10323,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10375,7 +10353,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10551,7 +10528,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10621,7 +10597,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10651,7 +10626,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10681,7 +10655,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10711,7 +10684,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -10741,7 +10713,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -11052,7 +11023,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -11094,7 +11064,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -11125,7 +11094,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -11156,7 +11124,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -11494,7 +11461,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -12484,7 +12450,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -12515,7 +12480,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -12989,7 +12953,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -13325,7 +13288,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -13366,7 +13328,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -13966,7 +13927,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -14197,7 +14157,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -14240,7 +14199,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -14334,7 +14292,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -14991,7 +14948,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -15245,7 +15201,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -15282,7 +15237,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -15314,7 +15268,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -15351,7 +15304,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -17731,7 +17683,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -17762,7 +17713,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -17837,12 +17787,12 @@ targets:
   build: test
   language: c++
   headers:
+  - test/core/event_engine/event_engine_test_utils.h
   - test/core/test_util/cmdline.h
   - test/core/test_util/evaluate_args_test_util.h
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -17853,6 +17803,7 @@ targets:
   - src/proto/grpc/testing/echo_messages.proto
   - src/proto/grpc/testing/simple_messages.proto
   - src/proto/grpc/testing/xds/v3/orca_load_report.proto
+  - test/core/event_engine/event_engine_test_utils.cc
   - test/core/test_util/cmdline.cc
   - test/core/test_util/fuzzer_util.cc
   - test/core/test_util/grpc_profiler.cc
@@ -17881,7 +17832,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -18071,7 +18021,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -18226,7 +18175,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -18677,7 +18625,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -18817,7 +18764,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -18977,7 +18923,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19060,7 +19005,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19105,7 +19049,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19155,7 +19098,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19189,7 +19131,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19412,7 +19353,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19443,7 +19383,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19473,7 +19412,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19861,7 +19799,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -19958,7 +19895,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -20855,7 +20791,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h
@@ -20949,94 +20884,6 @@ targets:
   - gtest
   - grpc_test_util
   uses_polling: false
-- name: xds_channel_stack_modifier_test
-  gtest: true
-  build: test
-  language: c++
-  headers:
-  - src/core/ext/filters/logging/logging_filter.h
-  - src/core/ext/filters/logging/logging_sink.h
-  - src/cpp/client/client_stats_interceptor.h
-  - src/cpp/client/create_channel_internal.h
-  - src/cpp/client/secure_credentials.h
-  - src/cpp/common/secure_auth_context.h
-  - src/cpp/ext/filters/census/client_filter.h
-  - src/cpp/ext/filters/census/context.h
-  - src/cpp/ext/filters/census/grpc_plugin.h
-  - src/cpp/ext/filters/census/measures.h
-  - src/cpp/ext/filters/census/open_census_call_tracer.h
-  - src/cpp/ext/filters/census/rpc_encoding.h
-  - src/cpp/ext/filters/census/server_call_tracer.h
-  - src/cpp/server/backend_metric_recorder.h
-  - src/cpp/server/dynamic_thread_pool.h
-  - src/cpp/server/external_connection_acceptor_impl.h
-  - src/cpp/server/health/default_health_check_service.h
-  - src/cpp/server/secure_server_credentials.h
-  - src/cpp/server/thread_pool_interface.h
-  - src/cpp/thread_manager/thread_manager.h
-  src:
-  - src/core/ext/filters/logging/logging_filter.cc
-  - src/cpp/client/call_credentials.cc
-  - src/cpp/client/channel_cc.cc
-  - src/cpp/client/channel_credentials.cc
-  - src/cpp/client/client_callback.cc
-  - src/cpp/client/client_context.cc
-  - src/cpp/client/client_interceptor.cc
-  - src/cpp/client/client_stats_interceptor.cc
-  - src/cpp/client/create_channel.cc
-  - src/cpp/client/create_channel_internal.cc
-  - src/cpp/client/create_channel_posix.cc
-  - src/cpp/client/insecure_credentials.cc
-  - src/cpp/client/secure_credentials.cc
-  - src/cpp/common/alarm.cc
-  - src/cpp/common/auth_property_iterator.cc
-  - src/cpp/common/channel_arguments.cc
-  - src/cpp/common/completion_queue_cc.cc
-  - src/cpp/common/resource_quota_cc.cc
-  - src/cpp/common/rpc_method.cc
-  - src/cpp/common/secure_auth_context.cc
-  - src/cpp/common/secure_create_auth_context.cc
-  - src/cpp/common/tls_certificate_provider.cc
-  - src/cpp/common/tls_certificate_verifier.cc
-  - src/cpp/common/tls_credentials_options.cc
-  - src/cpp/common/validate_service_config.cc
-  - src/cpp/common/version_cc.cc
-  - src/cpp/ext/filters/census/client_filter.cc
-  - src/cpp/ext/filters/census/context.cc
-  - src/cpp/ext/filters/census/grpc_plugin.cc
-  - src/cpp/ext/filters/census/measures.cc
-  - src/cpp/ext/filters/census/rpc_encoding.cc
-  - src/cpp/ext/filters/census/server_call_tracer.cc
-  - src/cpp/ext/filters/census/views.cc
-  - src/cpp/server/async_generic_service.cc
-  - src/cpp/server/backend_metric_recorder.cc
-  - src/cpp/server/channel_argument_option.cc
-  - src/cpp/server/create_default_thread_pool.cc
-  - src/cpp/server/external_connection_acceptor_impl.cc
-  - src/cpp/server/health/default_health_check_service.cc
-  - src/cpp/server/health/health_check_service.cc
-  - src/cpp/server/health/health_check_service_server_builder_option.cc
-  - src/cpp/server/insecure_server_credentials.cc
-  - src/cpp/server/secure_server_credentials.cc
-  - src/cpp/server/server_builder.cc
-  - src/cpp/server/server_callback.cc
-  - src/cpp/server/server_cc.cc
-  - src/cpp/server/server_context.cc
-  - src/cpp/server/server_credentials.cc
-  - src/cpp/server/server_posix.cc
-  - src/cpp/thread_manager/thread_manager.cc
-  - src/cpp/util/byte_buffer_cc.cc
-  - src/cpp/util/status.cc
-  - src/cpp/util/string_ref.cc
-  - src/cpp/util/time_cc.cc
-  - test/core/server/xds_channel_stack_modifier_test.cc
-  deps:
-  - gtest
-  - absl/base:endian
-  - absl/numeric:int128
-  - protobuf
-  - grpc_test_util
-  uses_polling: false
 - name: xds_client_test
   gtest: true
   build: test
@@ -21330,7 +21177,6 @@ targets:
   - test/core/test_util/fuzzer_util.h
   - test/core/test_util/grpc_profiler.h
   - test/core/test_util/histogram.h
-  - test/core/test_util/mock_authorization_endpoint.h
   - test/core/test_util/mock_endpoint.h
   - test/core/test_util/parse_hexstring.h
   - test/core/test_util/resolve_localhost_ip46.h

build_config.rb

@@ -13,5 +13,5 @@
 # limitations under the License.
 
 module GrpcBuildConfig
-  CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-40.dll'
+  CORE_WINDOWS_DLL = '/tmp/libs/opt/grpc-41.dll'
 end

build_handwritten.yaml

@@ -12,7 +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: 40.0.0
+  core_version: 41.0.0
   csharp_major_version: 2
   g_stands_for: grateful
   protobuf_version: 3.26.1

gRPC-C++.podspec

@@ -38,6 +38,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   s.requires_arc = false
 
@@ -175,6 +176,7 @@ Pod::Spec.new do |s|
                       'include/grpcpp/impl/service_type.h',
                       'include/grpcpp/impl/status.h',
                       'include/grpcpp/impl/sync.h',
+                      'include/grpcpp/passive_listener.h',
                       'include/grpcpp/resource_quota.h',
                       'include/grpcpp/security/audit_logging.h',
                       'include/grpcpp/security/auth_context.h',
@@ -243,6 +245,7 @@ Pod::Spec.new do |s|
     ss.dependency 'abseil/functional/function_ref', abseil_version
     ss.dependency 'abseil/hash/hash', abseil_version
     ss.dependency 'abseil/log/check', abseil_version
+    ss.dependency 'abseil/log/globals', abseil_version
     ss.dependency 'abseil/log/log', abseil_version
     ss.dependency 'abseil/memory/memory', abseil_version
     ss.dependency 'abseil/meta/type_traits', abseil_version

gRPC-Core.podspec

@@ -42,6 +42,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   s.requires_arc = false
 
@@ -167,6 +168,7 @@ Pod::Spec.new do |s|
                       'include/grpc/impl/propagation_bits.h',
                       'include/grpc/impl/slice_type.h',
                       'include/grpc/load_reporting.h',
+                      'include/grpc/passive_listener.h',
                       'include/grpc/slice.h',
                       'include/grpc/slice_buffer.h',
                       'include/grpc/status.h',
@@ -215,6 +217,7 @@ Pod::Spec.new do |s|
     ss.dependency 'abseil/functional/function_ref', abseil_version
     ss.dependency 'abseil/hash/hash', abseil_version
     ss.dependency 'abseil/log/check', abseil_version
+    ss.dependency 'abseil/log/globals', abseil_version
     ss.dependency 'abseil/log/log', abseil_version
     ss.dependency 'abseil/memory/memory', abseil_version
     ss.dependency 'abseil/meta/type_traits', abseil_version

gRPC-ProtoRPC.podspec

@@ -37,6 +37,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   name = 'ProtoRPC'
   s.module_name = name

gRPC-RxLibrary.podspec

@@ -37,6 +37,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   name = 'RxLibrary'
   s.module_name = name

gRPC.podspec

@@ -49,6 +49,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   # Exposes the privacy manifest. Depended on by any subspecs containing
   # non-interface files.
@@ -83,6 +84,7 @@ Pod::Spec.new do |s|
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
   end
 
   s.subspec 'Interface' do |ss|
@@ -118,6 +120,7 @@ Pod::Spec.new do |s|
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
   end
 
   s.subspec 'GRPCCore' do |ss|
@@ -155,6 +158,7 @@ Pod::Spec.new do |s|
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
   end
 
   s.subspec 'GRPCCoreCronet' do |ss|
@@ -179,6 +183,7 @@ Pod::Spec.new do |s|
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
   end
 
   s.subspec 'InternalTesting' do |ss|
@@ -191,5 +196,6 @@ Pod::Spec.new do |s|
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
   end
 end

grpc.gemspec

@@ -99,6 +99,7 @@ Gem::Specification.new do |s|
   s.files += %w( include/grpc/impl/propagation_bits.h )
   s.files += %w( include/grpc/impl/slice_type.h )
   s.files += %w( include/grpc/load_reporting.h )
+  s.files += %w( include/grpc/passive_listener.h )
   s.files += %w( include/grpc/slice.h )
   s.files += %w( include/grpc/slice_buffer.h )
   s.files += %w( include/grpc/status.h )

include/grpc/module.modulemap

@@ -38,6 +38,7 @@ header "byte_buffer.h"
   header "impl/propagation_bits.h"
   header "impl/slice_type.h"
   header "load_reporting.h"
+  header "passive_listener.h"
   header "slice.h"
   header "slice_buffer.h"
   header "status.h"

include/grpc/passive_listener.h

@@ -0,0 +1,62 @@
+// Copyright 2024 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#ifndef GRPC_PASSIVE_LISTENER_H
+#define GRPC_PASSIVE_LISTENER_H
+
+#include <memory>
+
+#include <grpc/event_engine/event_engine.h>
+#include <grpc/grpc.h>
+// #include <grpc/support/port_platform.h>
+
+namespace grpc_core {
+class Server;
+
+namespace experimental {
+class PassiveListenerImpl;
+
+/// -- EXPERIMENTAL API --
+/// Interface for used for Server Endpoint injection.
+class PassiveListener {
+ public:
+  virtual ~PassiveListener() = default;
+  /// -- EXPERIMENTAL API --
+  ///
+  /// Takes an Endpoint for an established connection, and treats it as if the
+  /// connection had been accepted by the server.
+  ///
+  /// The server must be started before endpoints can be accepted.
+  virtual absl::Status AcceptConnectedEndpoint(
+      std::unique_ptr<grpc_event_engine::experimental::EventEngine::Endpoint>
+          endpoint) = 0;
+
+  /// -- EXPERIMENTAL API --
+  ///
+  /// Takes a connected file descriptor, and treats it as if the server had
+  /// accepted the connection itself.
+  ///
+  /// Returns a failure status if the server's active EventEngine does not
+  /// support Endpoint creation from fds.
+  virtual absl::Status AcceptConnectedFd(int fd) = 0;
+};
+
+}  // namespace experimental
+}  // namespace grpc_core
+
+absl::Status grpc_server_add_passive_listener(
+    grpc_core::Server* server, grpc_server_credentials* credentials,
+    std::shared_ptr<grpc_core::experimental::PassiveListenerImpl>
+        passive_listener);
+
+#endif /* GRPC_PASSIVE_LISTENER_H */

include/grpcpp/passive_listener.h

@@ -0,0 +1,27 @@
+// Copyright 2024 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#ifndef GRPCPP_PASSIVE_LISTENER_H
+#define GRPCPP_PASSIVE_LISTENER_H
+
+#include <grpc/passive_listener.h>
+
+namespace grpc {
+namespace experimental {
+
+using grpc_core::experimental::PassiveListener;
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_PASSIVE_LISTENER_H

include/grpcpp/security/server_credentials.h

@@ -84,6 +84,7 @@ class ServerCredentials : private grpc::internal::GrpcLibrary {
   // Needed for access to AddPortToServer.
   friend class Server;
   // Needed for access to c_creds_.
+  friend class ServerBuilder;
   friend std::shared_ptr<ServerCredentials> grpc::XdsServerCredentials(
       const std::shared_ptr<ServerCredentials>& fallback_credentials);
 

include/grpcpp/server_builder.h

@@ -25,13 +25,17 @@
 #include <vector>
 
 #include <grpc/compression.h>
+#include <grpc/event_engine/event_engine.h>
+#include <grpc/passive_listener.h>
 #include <grpc/support/cpu.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/workaround_list.h>
 #include <grpcpp/impl/channel_argument_option.h>
 #include <grpcpp/impl/server_builder_option.h>
 #include <grpcpp/impl/server_builder_plugin.h>
+#include <grpcpp/passive_listener.h>
 #include <grpcpp/security/authorization_policy_provider.h>
+#include <grpcpp/security/server_credentials.h>
 #include <grpcpp/server.h>
 #include <grpcpp/support/config.h>
 #include <grpcpp/support/server_interceptor.h>
@@ -291,6 +295,18 @@ class ServerBuilder {
     void EnableCallMetricRecording(
         experimental::ServerMetricRecorder* server_metric_recorder = nullptr);
 
+    // Creates a passive listener for Server Endpoint injection.
+    ///
+    /// \a PasiveListener lets applications provide pre-established connections
+    /// to gRPC Servers. The server will behave as if it accepted the connection
+    /// itself on its own listening addresses.
+    ///
+    /// This can be called multiple times to create passive listeners with
+    /// different server credentials.
+    ServerBuilder& AddPassiveListener(
+        std::shared_ptr<grpc::ServerCredentials> creds,
+        std::unique_ptr<grpc::experimental::PassiveListener>& passive_listener);
+
    private:
     ServerBuilder* builder_;
   };
@@ -364,6 +380,17 @@ class ServerBuilder {
  private:
   friend class grpc::testing::ServerBuilderPluginTest;
 
+  struct UnstartedPassiveListener {
+    std::weak_ptr<grpc_core::experimental::PassiveListenerImpl>
+        passive_listener;
+    std::shared_ptr<grpc::ServerCredentials> credentials;
+    UnstartedPassiveListener(
+        std::weak_ptr<grpc_core::experimental::PassiveListenerImpl> listener,
+        std::shared_ptr<grpc::ServerCredentials> creds)
+        : passive_listener(std::move(listener)),
+          credentials(std::move(creds)) {}
+  };
+
   struct SyncServerSettings {
     SyncServerSettings()
         : num_cqs(1), min_pollers(1), max_pollers(2), cq_timeout_msec(10000) {}
@@ -388,6 +415,7 @@ class ServerBuilder {
   std::vector<std::unique_ptr<grpc::ServerBuilderOption>> options_;
   std::vector<std::unique_ptr<NamedService>> services_;
   std::vector<Port> ports_;
+  std::vector<UnstartedPassiveListener> unstarted_passive_listeners_;
 
   SyncServerSettings sync_server_settings_;
 

package.xml

@@ -81,6 +81,7 @@
     <file baseinstalldir="/" name="include/grpc/impl/propagation_bits.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/impl/slice_type.h" role="src" />
     <file baseinstalldir="/" name="include/grpc/load_reporting.h" role="src" />
+    <file baseinstalldir="/" name="include/grpc/passive_listener.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" />

src/core/BUILD

@@ -2667,6 +2667,7 @@ grpc_cc_library(
             ],
             "//:ios": ["cf_event_engine"],
             "//:tvos": ["cf_event_engine"],
+            "//:visionos": ["cf_event_engine"],
             "//:watchos": ["cf_event_engine"],
             "//conditions:default": ["posix_event_engine"],
         },
@@ -6841,6 +6842,8 @@ grpc_cc_library(
         "connection_quota",
         "error",
         "error_utils",
+        "event_engine_extensions",
+        "event_engine_query_extensions",
         "grpc_insecure_credentials",
         "handshaker_registry",
         "iomgr_fwd",

src/core/ext/transport/binder/server/binder_server.cc

@@ -159,7 +159,7 @@ class BinderServerListener : public Server::ListenerInterface {
     on_destroy_done_ = on_destroy_done;
   }
 
-  void Orphan() override { delete this; }
+  void Orphan() override { Unref(); }
 
   ~BinderServerListener() override {
     ExecCtx::Get()->Flush();
@@ -239,9 +239,8 @@ bool AddBinderPort(const std::string& addr, grpc_server* server,
   }
   std::string conn_id = addr.substr(kBinderUriScheme.size());
   Server* core_server = Server::FromC(server);
-  core_server->AddListener(
+  core_server->AddListener(MakeOrphanable<BinderServerListener>(
-      OrphanablePtr<Server::ListenerInterface>(new BinderServerListener(
+      core_server, conn_id, std::move(factory), security_policy));
-          core_server, conn_id, std::move(factory), security_policy)));
   return true;
 }
 

src/core/ext/transport/chaotic_good/server/chaotic_good_server.cc

@@ -102,8 +102,8 @@ absl::StatusOr<int> ChaoticGoodServerListener::Bind(
             str.ok() ? str->c_str() : str.status().ToString().c_str());
   }
   EventEngine::Listener::AcceptCallback accept_cb =
-      [self = Ref()](std::unique_ptr<EventEngine::Endpoint> ep,
+      [self = RefAsSubclass<ChaoticGoodServerListener>()](
-                     MemoryAllocator) {
+          std::unique_ptr<EventEngine::Endpoint> ep, MemoryAllocator) {
         ExecCtx exec_ctx;
         MutexLock lock(&self->mu_);
         if (self->shutdown_) return;
@@ -148,7 +148,8 @@ absl::Status ChaoticGoodServerListener::StartListening() {
 ChaoticGoodServerListener::ActiveConnection::ActiveConnection(
     RefCountedPtr<ChaoticGoodServerListener> listener,
     std::unique_ptr<EventEngine::Endpoint> endpoint)
-    : memory_allocator_(listener->memory_allocator_), listener_(listener) {
+    : memory_allocator_(listener->memory_allocator_),
+      listener_(std::move(listener)) {
   handshaking_state_ = MakeRefCounted<HandshakingState>(Ref());
   handshaking_state_->Start(std::move(endpoint));
 }

src/core/ext/transport/chaotic_good/server/chaotic_good_server.h

@@ -49,9 +49,7 @@
 
 namespace grpc_core {
 namespace chaotic_good {
-class ChaoticGoodServerListener final
+class ChaoticGoodServerListener final : public Server::ListenerInterface {
-    : public Server::ListenerInterface,
-      public RefCounted<ChaoticGoodServerListener> {
  public:
   static absl::AnyInvocable<std::string()> DefaultConnectionIDGenerator() {
     return [bitgen = absl::BitGen()]() mutable {

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

@@ -41,6 +41,7 @@
 #include <grpc/grpc.h>
 #include <grpc/grpc_posix.h>
 #include <grpc/impl/channel_arg_names.h>
+#include <grpc/passive_listener.h>
 #include <grpc/slice_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -57,6 +58,8 @@
 #include "src/core/lib/config/core_configuration.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/event_engine/channel_args_endpoint_config.h"
+#include "src/core/lib/event_engine/extensions/supports_fd.h"
+#include "src/core/lib/event_engine/query_extensions.h"
 #include "src/core/lib/gprpp/debug_location.h"
 #include "src/core/lib/gprpp/orphanable.h"
 #include "src/core/lib/gprpp/ref_counted_ptr.h"
@@ -66,6 +69,7 @@
 #include "src/core/lib/gprpp/unique_type_name.h"
 #include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/event_engine_shims/endpoint.h"
 #include "src/core/lib/iomgr/iomgr_fwd.h"
 #include "src/core/lib/iomgr/pollset_set.h"
 #include "src/core/lib/iomgr/resolve_address.h"
@@ -92,9 +96,11 @@
 #endif  // GPR_SUPPORT_CHANNELS_FROM_FD
 
 namespace grpc_core {
-namespace {
 
-using ::grpc_event_engine::experimental::EventEngine;
+using grpc_event_engine::experimental::ChannelArgsEndpointConfig;
+using grpc_event_engine::experimental::EventEngine;
+using grpc_event_engine::experimental::EventEngineSupportsFdExtension;
+using grpc_event_engine::experimental::QueryExtension;
 
 const char kUnixUriPrefix[] = "unix:";
 const char kUnixAbstractUriPrefix[] = "unix-abstract:";
@@ -111,14 +117,23 @@ class Chttp2ServerListener : public Server::ListenerInterface {
       Server* server, const char* name, const ChannelArgs& args,
       Chttp2ServerArgsModifier args_modifier);
 
+  static Chttp2ServerListener* CreateForPassiveListener(
+      Server* server, const ChannelArgs& args,
+      std::shared_ptr<experimental::PassiveListenerImpl> passive_listener);
+
   // Do not instantiate directly.  Use one of the factory methods above.
   Chttp2ServerListener(Server* server, const ChannelArgs& args,
-                       Chttp2ServerArgsModifier args_modifier);
+                       Chttp2ServerArgsModifier args_modifier,
+                       grpc_server_config_fetcher* config_fetcher,
+                       std::shared_ptr<experimental::PassiveListenerImpl>
+                           passive_listener = nullptr);
   ~Chttp2ServerListener() override;
 
   void Start(Server* server,
              const std::vector<grpc_pollset*>* pollsets) override;
 
+  void AcceptConnectedEndpoint(std::unique_ptr<EventEngine::Endpoint> endpoint);
+
   channelz::ListenSocketNode* channelz_listen_socket_node() const override {
     return channelz_listen_socket_.get();
   }
@@ -128,6 +143,8 @@ class Chttp2ServerListener : public Server::ListenerInterface {
   void Orphan() override;
 
  private:
+  friend class experimental::PassiveListenerImpl;
+
   class ConfigFetcherWatcher
       : public grpc_server_config_fetcher::WatcherInterface {
    public:
@@ -234,34 +251,8 @@ class Chttp2ServerListener : public Server::ListenerInterface {
   static void DestroyListener(Server* /*server*/, void* arg,
                               grpc_closure* destroy_done);
 
-  // The interface required by RefCountedPtr<> has been manually implemented
+  Server* const server_ = nullptr;
-  // here to take a ref on tcp_server_ instead. Note that, the handshaker
+  grpc_tcp_server* tcp_server_ = nullptr;
-  // needs tcp_server_ to exist for the lifetime of the handshake since it's
-  // needed by acceptor. Sharing refs between the listener and tcp_server_ is
-  // just an optimization to avoid taking additional refs on the listener,
-  // since TcpServerShutdownComplete already holds a ref to the listener.
-  void IncrementRefCount() { grpc_tcp_server_ref(tcp_server_); }
-  void IncrementRefCount(const DebugLocation& /* location */,
-                         const char* /* reason */) {
-    IncrementRefCount();
-  }
-
-  GRPC_MUST_USE_RESULT RefCountedPtr<Chttp2ServerListener> Ref() {
-    IncrementRefCount();
-    return RefCountedPtr<Chttp2ServerListener>(this);
-  }
-  GRPC_MUST_USE_RESULT RefCountedPtr<Chttp2ServerListener> Ref(
-      const DebugLocation& /* location */, const char* /* reason */) {
-    return Ref();
-  }
-
-  void Unref() { grpc_tcp_server_unref(tcp_server_); }
-  void Unref(const DebugLocation& /* location */, const char* /* reason */) {
-    Unref();
-  }
-
-  Server* const server_;
-  grpc_tcp_server* tcp_server_;
   grpc_resolved_address resolved_address_;
   Chttp2ServerArgsModifier const args_modifier_;
   ConfigFetcherWatcher* config_fetcher_watcher_ = nullptr;
@@ -284,6 +275,10 @@ class Chttp2ServerListener : public Server::ListenerInterface {
   RefCountedPtr<channelz::ListenSocketNode> channelz_listen_socket_;
   MemoryQuotaRefPtr memory_quota_;
   ConnectionQuotaRefPtr connection_quota_;
+  grpc_server_config_fetcher* config_fetcher_ = nullptr;
+  // TODO(yashykt): consider using absl::variant<> to minimize memory usage for
+  // disjoint cases where different fields are used.
+  std::shared_ptr<experimental::PassiveListenerImpl> passive_listener_;
 };
 
 //
@@ -380,13 +375,17 @@ Chttp2ServerListener::ActiveConnection::HandshakingState::HandshakingState(
       handshake_mgr_(MakeRefCounted<HandshakeManager>()),
       deadline_(GetConnectionDeadline(args)),
       interested_parties_(grpc_pollset_set_create()) {
+  if (accepting_pollset != nullptr) {
     grpc_pollset_set_add_pollset(interested_parties_, accepting_pollset_);
+  }
   CoreConfiguration::Get().handshaker_registry().AddHandshakers(
       HANDSHAKER_SERVER, args, interested_parties_, handshake_mgr_.get());
 }
 
 Chttp2ServerListener::ActiveConnection::HandshakingState::~HandshakingState() {
+  if (accepting_pollset_ != nullptr) {
     grpc_pollset_set_del_pollset(interested_parties_, accepting_pollset_);
+  }
   grpc_pollset_set_destroy(interested_parties_);
   gpr_free(acceptor_);
 }
@@ -708,19 +707,18 @@ void Chttp2ServerListener::ActiveConnection::OnDrainGraceTimeExpiry() {
 grpc_error_handle Chttp2ServerListener::Create(
     Server* server, grpc_resolved_address* addr, const ChannelArgs& args,
     Chttp2ServerArgsModifier args_modifier, int* port_num) {
-  Chttp2ServerListener* listener = nullptr;
-  // The bulk of this method is inside of a lambda to make cleanup
-  // easier without using goto.
-  grpc_error_handle error = [&]() {
-    grpc_error_handle error;
   // Create Chttp2ServerListener.
-    listener = new Chttp2ServerListener(server, args, args_modifier);
+  OrphanablePtr<Chttp2ServerListener> listener =
-    error = grpc_tcp_server_create(
+      MakeOrphanable<Chttp2ServerListener>(server, args, args_modifier,
-        &listener->tcp_server_shutdown_complete_,
+                                           server->config_fetcher());
-        grpc_event_engine::experimental::ChannelArgsEndpointConfig(args),
+  // The tcp_server will be unreffed when the listener is orphaned, which could
-        OnAccept, listener, &listener->tcp_server_);
+  // be at the end of this function if the listener was not added to the
+  // server's set of listeners.
+  grpc_error_handle error = grpc_tcp_server_create(
+      &listener->tcp_server_shutdown_complete_, ChannelArgsEndpointConfig(args),
+      OnAccept, listener.get(), &listener->tcp_server_);
   if (!error.ok()) return error;
-    if (server->config_fetcher() != nullptr) {
+  if (listener->config_fetcher_ != nullptr) {
     listener->resolved_address_ = *addr;
     // TODO(yashykt): Consider binding so as to be able to return the port
     // number.
@@ -737,54 +735,54 @@ grpc_error_handle Chttp2ServerListener::Create(
     }
     listener->channelz_listen_socket_ =
         MakeRefCounted<channelz::ListenSocketNode>(
-              *string_address,
+            *string_address, absl::StrCat("chttp2 listener ", *string_address));
-              absl::StrCat("chttp2 listener ", *string_address));
   }
   // Register with the server only upon success
-    server->AddListener(OrphanablePtr<Server::ListenerInterface>(listener));
+  server->AddListener(std::move(listener));
   return absl::OkStatus();
-  }();
-  if (!error.ok()) {
-    if (listener != nullptr) {
-      if (listener->tcp_server_ != nullptr) {
-        // listener is deleted when tcp_server_ is shutdown.
-        grpc_tcp_server_unref(listener->tcp_server_);
-      } else {
-        delete listener;
-      }
-    }
-  }
-  return error;
 }
 
 grpc_error_handle Chttp2ServerListener::CreateWithAcceptor(
     Server* server, const char* name, const ChannelArgs& args,
     Chttp2ServerArgsModifier args_modifier) {
-  Chttp2ServerListener* listener =
+  auto listener = MakeOrphanable<Chttp2ServerListener>(
-      new Chttp2ServerListener(server, args, args_modifier);
+      server, args, args_modifier, server->config_fetcher());
   grpc_error_handle error = grpc_tcp_server_create(
-      &listener->tcp_server_shutdown_complete_,
+      &listener->tcp_server_shutdown_complete_, ChannelArgsEndpointConfig(args),
-      grpc_event_engine::experimental::ChannelArgsEndpointConfig(args),
+      OnAccept, listener.get(), &listener->tcp_server_);
-      OnAccept, listener, &listener->tcp_server_);
+  if (!error.ok()) return error;
-  if (!error.ok()) {
-    delete listener;
-    return error;
-  }
   // TODO(yangg) channelz
   TcpServerFdHandler** arg_val = args.GetPointer<TcpServerFdHandler*>(name);
   *arg_val = grpc_tcp_server_create_fd_handler(listener->tcp_server_);
-  server->AddListener(OrphanablePtr<Server::ListenerInterface>(listener));
+  server->AddListener(std::move(listener));
   return absl::OkStatus();
 }
 
+Chttp2ServerListener* Chttp2ServerListener::CreateForPassiveListener(
+    Server* server, const ChannelArgs& args,
+    std::shared_ptr<experimental::PassiveListenerImpl> passive_listener) {
+  // TODO(hork): figure out how to handle channelz in this case
+  auto listener = MakeOrphanable<Chttp2ServerListener>(
+      server, args, /*args_modifier=*/
+      [](const ChannelArgs& args, grpc_error_handle*) { return args; }, nullptr,
+      std::move(passive_listener));
+  auto listener_ptr = listener.get();
+  server->AddListener(std::move(listener));
+  return listener_ptr;
+}
+
 Chttp2ServerListener::Chttp2ServerListener(
     Server* server, const ChannelArgs& args,
-    Chttp2ServerArgsModifier args_modifier)
+    Chttp2ServerArgsModifier args_modifier,
+    grpc_server_config_fetcher* config_fetcher,
+    std::shared_ptr<experimental::PassiveListenerImpl> passive_listener)
     : server_(server),
       args_modifier_(args_modifier),
       args_(args),
       memory_quota_(args.GetObject<ResourceQuota>()->memory_quota()),
-      connection_quota_(MakeRefCounted<ConnectionQuota>()) {
+      connection_quota_(MakeRefCounted<ConnectionQuota>()),
+      config_fetcher_(config_fetcher),
+      passive_listener_(std::move(passive_listener)) {
   auto max_allowed_incoming_connections =
       args.GetInt(GRPC_ARG_MAX_ALLOWED_INCOMING_CONNECTIONS);
   if (max_allowed_incoming_connections.has_value()) {
@@ -799,6 +797,9 @@ Chttp2ServerListener::~Chttp2ServerListener() {
   // Flush queued work before destroying handshaker factory, since that
   // may do a synchronous unref.
   ExecCtx::Get()->Flush();
+  if (passive_listener_ != nullptr) {
+    passive_listener_->ListenerDestroyed();
+  }
   if (on_destroy_done_ != nullptr) {
     ExecCtx::Run(DEBUG_LOCATION, on_destroy_done_, absl::OkStatus());
     ExecCtx::Get()->Flush();
@@ -808,10 +809,11 @@ Chttp2ServerListener::~Chttp2ServerListener() {
 // Server callback: start listening on our ports
 void Chttp2ServerListener::Start(
     Server* /*server*/, const std::vector<grpc_pollset*>* /* pollsets */) {
-  if (server_->config_fetcher() != nullptr) {
+  if (config_fetcher_ != nullptr) {
-    auto watcher = std::make_unique<ConfigFetcherWatcher>(Ref());
+    auto watcher = std::make_unique<ConfigFetcherWatcher>(
+        RefAsSubclass<Chttp2ServerListener>());
     config_fetcher_watcher_ = watcher.get();
-    server_->config_fetcher()->StartWatch(
+    config_fetcher_->StartWatch(
         grpc_sockaddr_to_string(&resolved_address_, false).value(),
         std::move(watcher));
   } else {
@@ -825,14 +827,22 @@ void Chttp2ServerListener::Start(
 }
 
 void Chttp2ServerListener::StartListening() {
+  if (tcp_server_ != nullptr) {
     grpc_tcp_server_start(tcp_server_, &server_->pollsets());
   }
+}
 
 void Chttp2ServerListener::SetOnDestroyDone(grpc_closure* on_destroy_done) {
   MutexLock lock(&mu_);
   on_destroy_done_ = on_destroy_done;
 }
 
+void Chttp2ServerListener::AcceptConnectedEndpoint(
+    std::unique_ptr<EventEngine::Endpoint> endpoint) {
+  OnAccept(this, grpc_event_engine_endpoint_create(std::move(endpoint)),
+           /*accepting_pollset=*/nullptr, /*acceptor=*/nullptr);
+}
+
 void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp,
                                     grpc_pollset* accepting_pollset,
                                     grpc_tcp_server_acceptor* acceptor) {
@@ -857,7 +867,7 @@ void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp,
     endpoint_cleanup(error);
     return;
   }
-  if (self->server_->config_fetcher() != nullptr) {
+  if (self->config_fetcher_ != nullptr) {
     if (connection_manager == nullptr) {
       grpc_error_handle error = GRPC_ERROR_CREATE(
           "No ConnectionManager configured. Closing connection.");
@@ -898,7 +908,7 @@ void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp,
       // heap-use-after-free issues where `Ref()` is invoked when the ref of
       // tcp_server_ has already reached 0. (Ref() implementation of
       // Chttp2ServerListener is grpc_tcp_server_ref().)
-      listener_ref = self->Ref();
+      listener_ref = self->RefAsSubclass<Chttp2ServerListener>();
       self->connections_.emplace(connection.get(), std::move(connection));
     }
   }
@@ -913,7 +923,7 @@ void Chttp2ServerListener::TcpServerShutdownComplete(
     void* arg, grpc_error_handle /*error*/) {
   Chttp2ServerListener* self = static_cast<Chttp2ServerListener*>(arg);
   self->channelz_listen_socket_.reset();
-  delete self;
+  self->Unref();
 }
 
 // Server callback: destroy the tcp listener (so we don't generate further
@@ -922,7 +932,8 @@ void Chttp2ServerListener::Orphan() {
   // Cancel the watch before shutting down so as to avoid holding a ref to the
   // listener in the watcher.
   if (config_fetcher_watcher_ != nullptr) {
-    server_->config_fetcher()->CancelWatch(config_fetcher_watcher_);
+    GPR_ASSERT(config_fetcher_ != nullptr);
+    config_fetcher_->CancelWatch(config_fetcher_watcher_);
   }
   std::map<ActiveConnection*, OrphanablePtr<ActiveConnection>> connections;
   grpc_tcp_server* tcp_server;
@@ -940,11 +951,13 @@ void Chttp2ServerListener::Orphan() {
     }
     tcp_server = tcp_server_;
   }
+  if (tcp_server != nullptr) {
     grpc_tcp_server_shutdown_listeners(tcp_server);
     grpc_tcp_server_unref(tcp_server);
+  } else {
+    Unref();
+  }
 }
-
-}  // namespace
 
 //
 // Chttp2ServerAddPort()
@@ -1046,6 +1059,50 @@ ChannelArgs ModifyArgsForConnection(const ChannelArgs& args,
 }
 
 }  // namespace
+
+namespace experimental {
+
+absl::Status PassiveListenerImpl::AcceptConnectedEndpoint(
+    std::unique_ptr<EventEngine::Endpoint> endpoint) {
+  GPR_ASSERT(server_ != nullptr);
+  RefCountedPtr<Chttp2ServerListener> listener;
+  {
+    MutexLock lock(&mu_);
+    if (listener_ != nullptr) {
+      listener =
+          listener_->RefIfNonZero().TakeAsSubclass<Chttp2ServerListener>();
+    }
+  }
+  if (listener == nullptr) {
+    return absl::UnavailableError("passive listener already shut down");
+  }
+  ExecCtx exec_ctx;
+  listener->AcceptConnectedEndpoint(std::move(endpoint));
+  return absl::OkStatus();
+}
+
+absl::Status PassiveListenerImpl::AcceptConnectedFd(int fd) {
+  GPR_ASSERT(server_ != nullptr);
+  ExecCtx exec_ctx;
+  auto& args = server_->channel_args();
+  auto* supports_fd = QueryExtension<EventEngineSupportsFdExtension>(
+      /*engine=*/args.GetObjectRef<EventEngine>().get());
+  if (supports_fd == nullptr) {
+    return absl::UnimplementedError(
+        "The server's EventEngine does not support adding endpoints from "
+        "connected file descriptors.");
+  }
+  auto endpoint =
+      supports_fd->CreateEndpointFromFd(fd, ChannelArgsEndpointConfig(args));
+  return AcceptConnectedEndpoint(std::move(endpoint));
+}
+
+void PassiveListenerImpl::ListenerDestroyed() {
+  MutexLock lock(&mu_);
+  listener_ = nullptr;
+}
+
+}  // namespace experimental
 }  // namespace grpc_core
 
 int grpc_server_add_http2_port(grpc_server* server, const char* addr,
@@ -1143,3 +1200,31 @@ void grpc_server_add_channel_from_fd(grpc_server* /* server */, int /* fd */,
 }
 
 #endif  // GPR_SUPPORT_CHANNELS_FROM_FD
+
+absl::Status grpc_server_add_passive_listener(
+    grpc_core::Server* server, grpc_server_credentials* credentials,
+    std::shared_ptr<grpc_core::experimental::PassiveListenerImpl>
+        passive_listener) {
+  grpc_core::ExecCtx exec_ctx;
+  GRPC_API_TRACE("grpc_server_add_passive_listener(server=%p, credentials=%p)",
+                 2, (server, credentials));
+  // Create security context.
+  if (credentials == nullptr) {
+    return absl::UnavailableError(
+        "No credentials specified for passive listener");
+  }
+  auto sc = credentials->create_security_connector(grpc_core::ChannelArgs());
+  if (sc == nullptr) {
+    return absl::UnavailableError(
+        absl::StrCat("Unable to create secure server with credentials of type ",
+                     credentials->type().name()));
+  }
+  auto args = server->channel_args()
+                  .SetObject(credentials->Ref())
+                  .SetObject(std::move(sc));
+  passive_listener->listener_ =
+      grpc_core::Chttp2ServerListener::CreateForPassiveListener(
+          server, args, passive_listener);
+  passive_listener->server_ = server->Ref();
+  return absl::OkStatus();
+}

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

@@ -21,6 +21,7 @@
 
 #include <functional>
 
+#include <grpc/passive_listener.h>
 #include <grpc/support/port_platform.h>
 
 #include "src/core/lib/channel/channel_args.h"
@@ -42,6 +43,38 @@ grpc_error_handle Chttp2ServerAddPort(
     Server* server, const char* addr, const ChannelArgs& args,
     Chttp2ServerArgsModifier connection_args_modifier, int* port_num);
 
+class Chttp2ServerListener;
+namespace experimental {
+
+// An implementation of the public C++ passive listener interface.
+// The server builder holds a weak_ptr to one of these objects, and the
+// application owns the instance.
+class PassiveListenerImpl final : public PassiveListener {
+ public:
+  absl::Status AcceptConnectedEndpoint(
+      std::unique_ptr<grpc_event_engine::experimental::EventEngine::Endpoint>
+          endpoint) override ABSL_LOCKS_EXCLUDED(mu_);
+
+  absl::Status AcceptConnectedFd(GRPC_UNUSED int fd) override
+      ABSL_LOCKS_EXCLUDED(mu_);
+
+  void ListenerDestroyed() ABSL_LOCKS_EXCLUDED(mu_);
+
+ private:
+  // note: the grpc_core::Server redundant namespace qualification is
+  // required for older gcc versions.
+  friend absl::Status(::grpc_server_add_passive_listener)(
+      grpc_core::Server* server, grpc_server_credentials* credentials,
+      std::shared_ptr<grpc_core::experimental::PassiveListenerImpl>
+          passive_listener);
+
+  Mutex mu_;
+  // Data members will be populated when initialized.
+  RefCountedPtr<Server> server_;
+  Chttp2ServerListener* listener_;
+};
+
+}  // namespace experimental
 }  // namespace grpc_core
 
 #endif  // GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_SERVER_CHTTP2_SERVER_H

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

@@ -561,14 +561,6 @@ class StreamWriteContext {
       grpc_chttp2_encode_data(s_->id, &s_->flow_controlled_buffer, 0, true,
                               &s_->stats.outgoing, t_->outbuf.c_slice_buffer());
     } else {
-      if (send_status_.has_value()) {
-        s_->send_trailing_metadata->Set(grpc_core::HttpStatusMetadata(),
-                                        *send_status_);
-      }
-      if (send_content_type_.has_value()) {
-        s_->send_trailing_metadata->Set(grpc_core::ContentTypeMetadata(),
-                                        *send_content_type_);
-      }
       t_->hpack_compressor.EncodeHeaders(
           grpc_core::HPackCompressor::EncodeHeaderOptions{
               s_->id, true, t_->settings.peer().allow_true_binary_metadata(),
@@ -588,15 +580,39 @@ class StreamWriteContext {
   bool stream_became_writable() { return stream_became_writable_; }
 
  private:
+  class TrailersOnlyMetadataEncoder {
+   public:
+    explicit TrailersOnlyMetadataEncoder(grpc_metadata_batch* trailing_md)
+        : trailing_md_(trailing_md) {}
+
+    template <typename Which, typename Value>
+    void Encode(Which which, Value value) {
+      if (Which::kTransferOnTrailersOnly) {
+        trailing_md_->Set(which, value);
+      }
+    }
+
+    template <typename Which>
+    void Encode(Which which, const grpc_core::Slice& value) {
+      if (Which::kTransferOnTrailersOnly) {
+        trailing_md_->Set(which, value.Ref());
+      }
+    }
+
+    // Non-grpc metadata should not be transferred.
+    void Encode(const grpc_core::Slice&, const grpc_core::Slice&) {}
+
+   private:
+    grpc_metadata_batch* trailing_md_;
+  };
+
   void ConvertInitialMetadataToTrailingMetadata() {
     GRPC_CHTTP2_IF_TRACING(
         gpr_log(GPR_INFO, "not sending initial_metadata (Trailers-Only)"));
-    // When sending Trailers-Only, we need to move the :status and
+    // When sending Trailers-Only, we need to move metadata from headers to
-    // content-type headers to the trailers.
+    // trailers.
-    send_status_ =
+    TrailersOnlyMetadataEncoder encoder(s_->send_trailing_metadata);
-        s_->send_initial_metadata->get(grpc_core::HttpStatusMetadata());
+    s_->send_initial_metadata->Encode(&encoder);
-    send_content_type_ =
-        s_->send_initial_metadata->get(grpc_core::ContentTypeMetadata());
   }
 
   void SentLastFrame() {
@@ -629,9 +645,6 @@ class StreamWriteContext {
   grpc_chttp2_transport* const t_;
   grpc_chttp2_stream* const s_;
   bool stream_became_writable_ = false;
-  absl::optional<uint32_t> send_status_;
-  absl::optional<grpc_core::ContentTypeMetadata::ValueType> send_content_type_ =
-      {};
 };
 }  // namespace
 

src/core/lib/event_engine/extensions/supports_fd.h

@@ -112,6 +112,13 @@ class EventEngineSupportsFdExtension {
       int fd, const EndpointConfig& config,
       MemoryAllocator memory_allocator) = 0;
 
+  /// Creates an EventEngine::Endpoint from an fd which is already assumed to be
+  /// connected to a remote peer. See \a CreatePosixEndpointFromFd for details.
+  /// This has the same behavior, but the \a memory_allocator is taken from the
+  /// EndpointConfig's resource quota.
+  virtual std::unique_ptr<EventEngine::Endpoint> CreateEndpointFromFd(
+      int fd, const EndpointConfig& config) = 0;
+
   /// Called when the posix listener has accepted a new client connection.
   /// \a listener_fd - The listening socket fd that accepted the new client
   /// connection.

src/core/lib/event_engine/posix_engine/posix_engine.cc

@@ -25,7 +25,6 @@
 
 #include "absl/cleanup/cleanup.h"
 #include "absl/functional/any_invocable.h"
-#include "absl/log/check.h"
 #include "absl/status/status.h"
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
@@ -143,7 +142,7 @@ void AsyncConnect::OnWritable(absl::Status status)
   absl::StatusOr<std::unique_ptr<EventEngine::Endpoint>> ep;
 
   mu_.Lock();
-  CHECK_NE(fd_, nullptr);
+  GPR_ASSERT(fd_ != nullptr);
   fd = std::exchange(fd_, nullptr);
   bool connect_cancelled = connect_cancelled_;
   if (fd->IsHandleShutdown() && status.ok()) {
@@ -335,7 +334,7 @@ PosixEnginePollerManager::PosixEnginePollerManager(
       poller_state_(PollerState::kExternal),
       executor_(nullptr),
       trigger_shutdown_called_(false) {
-  DCHECK_NE(poller_, nullptr);
+  GPR_DEBUG_ASSERT(poller_ != nullptr);
 }
 
 void PosixEnginePollerManager::Run(
@@ -352,7 +351,7 @@ void PosixEnginePollerManager::Run(absl::AnyInvocable<void()> cb) {
 }
 
 void PosixEnginePollerManager::TriggerShutdown() {
-  DCHECK(trigger_shutdown_called_ == false);
+  GPR_DEBUG_ASSERT(trigger_shutdown_called_ == false);
   trigger_shutdown_called_ = true;
   // If the poller is external, dont try to shut it down. Otherwise
   // set poller state to PollerState::kShuttingDown.
@@ -468,7 +467,7 @@ PosixEventEngine::~PosixEventEngine() {
                 this, HandleToString(handle).c_str());
       }
     }
-    CHECK(GPR_LIKELY(known_handles_.empty()));
+    GPR_ASSERT(GPR_LIKELY(known_handles_.empty()));
   }
   timer_manager_->Shutdown();
 #if GRPC_PLATFORM_SUPPORTS_POSIX_POLLING
@@ -593,7 +592,7 @@ bool PosixEventEngine::CancelConnect(EventEngine::ConnectionHandle handle) {
     auto it = shard->pending_connections.find(connection_handle);
     if (it != shard->pending_connections.end()) {
       ac = it->second;
-      CHECK_NE(ac, nullptr);
+      GPR_ASSERT(ac != nullptr);
       // Trying to acquire ac->mu here would could cause a deadlock because
       // the OnWritable method tries to acquire the two mutexes used
       // here in the reverse order. But we dont need to acquire ac->mu before
@@ -640,7 +639,7 @@ EventEngine::ConnectionHandle PosixEventEngine::Connect(
     const EndpointConfig& args, MemoryAllocator memory_allocator,
     Duration timeout) {
 #if GRPC_PLATFORM_SUPPORTS_POSIX_POLLING
-  CHECK_NE(poller_manager_, nullptr);
+  GPR_ASSERT(poller_manager_ != nullptr);
   PosixTcpOptions options = TcpOptionsFromEndpointConfig(args);
   absl::StatusOr<PosixSocketWrapper::PosixSocketCreateResult> socket =
       PosixSocketWrapper::CreateAndPrepareTcpClientSocket(options, addr);
@@ -662,9 +661,9 @@ PosixEventEngine::CreatePosixEndpointFromFd(int fd,
                                             const EndpointConfig& config,
                                             MemoryAllocator memory_allocator) {
 #if GRPC_PLATFORM_SUPPORTS_POSIX_POLLING
-  DCHECK_GT(fd, 0);
+  GPR_ASSERT(fd > 0);
   PosixEventPoller* poller = poller_manager_->Poller();
-  DCHECK_NE(poller, nullptr);
+  GPR_DEBUG_ASSERT(poller != nullptr);
   EventHandle* handle =
       poller->CreateHandle(fd, "tcp-client", poller->CanTrackErrors());
   return CreatePosixEndpoint(handle, nullptr, shared_from_this(),
@@ -677,6 +676,22 @@ PosixEventEngine::CreatePosixEndpointFromFd(int fd,
 #endif  // GRPC_PLATFORM_SUPPORTS_POSIX_POLLING
 }
 
+std::unique_ptr<EventEngine::Endpoint> PosixEventEngine::CreateEndpointFromFd(
+    int fd, const EndpointConfig& config) {
+  auto options = TcpOptionsFromEndpointConfig(config);
+  MemoryAllocator allocator;
+  if (options.memory_allocator_factory != nullptr) {
+    return CreatePosixEndpointFromFd(
+        fd, config,
+        options.memory_allocator_factory->CreateMemoryAllocator(
+            absl::StrCat("allocator:", fd)));
+  }
+  return CreatePosixEndpointFromFd(
+      fd, config,
+      options.resource_quota->memory_quota()->CreateMemoryAllocator(
+          absl::StrCat("allocator:", fd)));
+}
+
 absl::StatusOr<std::unique_ptr<EventEngine::Listener>>
 PosixEventEngine::CreateListener(
     Listener::AcceptCallback on_accept,

src/core/lib/event_engine/posix_engine/posix_engine.h

@@ -172,6 +172,8 @@ class PosixEventEngine final : public PosixEventEngineWithFdSupport,
   std::unique_ptr<EventEngine::Endpoint> CreatePosixEndpointFromFd(
       int fd, const EndpointConfig& config,
       MemoryAllocator memory_allocator) override;
+  std::unique_ptr<EventEngine::Endpoint> CreateEndpointFromFd(
+      int fd, const EndpointConfig& config) override;
 
   absl::StatusOr<std::unique_ptr<Listener>> CreateListener(
       Listener::AcceptCallback on_accept,

src/core/lib/gpr/log.cc

@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "absl/log/globals.h"
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
 
@@ -38,6 +39,7 @@
 #define GPR_DEFAULT_LOG_VERBOSITY_STRING "ERROR"
 #endif  // !GPR_DEFAULT_LOG_VERBOSITY_STRING
 
+static constexpr int g_absl_vlog_level_for_gpr_verbosity_debug = 2;
 static constexpr gpr_atm GPR_LOG_SEVERITY_UNSET = GPR_LOG_SEVERITY_ERROR + 10;
 static constexpr gpr_atm GPR_LOG_SEVERITY_NONE = GPR_LOG_SEVERITY_ERROR + 11;
 
@@ -83,8 +85,9 @@ void gpr_default_log(gpr_log_func_args* args) {
   }
   switch (args->severity) {
     case GPR_LOG_SEVERITY_DEBUG:
-      //  Log DEBUG messages as VLOG(2).
+      VLOG(g_absl_vlog_level_for_gpr_verbosity_debug)
-      VLOG(2).AtLocation(args->file, args->line) << args->message;
+              .AtLocation(args->file, args->line)
+          << args->message;
       return;
     case GPR_LOG_SEVERITY_INFO:
       LOG(INFO).AtLocation(args->file, args->line) << args->message;
@@ -145,6 +148,12 @@ void gpr_log_verbosity_init() {
           parse_log_severity(verbosity, min_severity_to_print);
     }
     gpr_atm_no_barrier_store(&g_min_severity_to_print, min_severity_to_print);
+    if (grpc_core::ConfigVars::Get().AbslLogging() &&
+        min_severity_to_print == GPR_LOG_SEVERITY_DEBUG) {
+      // Matches full file paths that include a `*grpc*` folder, including
+      // grpcpp.
+      absl::SetVLogLevel("*grpc*/*", g_absl_vlog_level_for_gpr_verbosity_debug);
+    }
   }
   // init stacktrace_minloglevel when it hasn't been set
   if ((gpr_atm_no_barrier_load(&g_min_severity_to_print_stacktrace)) ==

src/core/lib/surface/version.cc

@@ -22,6 +22,6 @@
 #include <grpc/grpc.h>
 #include <grpc/support/port_platform.h>
 
-const char* grpc_version_string(void) { return "40.0.0"; }
+const char* grpc_version_string(void) { return "41.0.0"; }
 
 const char* grpc_g_stands_for(void) { return "grateful"; }

src/core/lib/transport/metadata_batch.h

@@ -77,6 +77,7 @@ size_t EncodedSizeOfKey(Key, const typename Key::ValueType& value) {
 // should not need to.
 struct GrpcTimeoutMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using ValueType = Timestamp;
   using MementoType = Duration;
   using CompressionTraits = TimeoutCompressor;
@@ -93,6 +94,7 @@ struct GrpcTimeoutMetadata {
 // TE metadata trait.
 struct TeMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   // HTTP2 says that TE can either be empty or "trailers".
   // Empty means this trait is not included, "trailers" means kTrailers, and
   // kInvalid is used to remember an invalid value.
@@ -122,6 +124,7 @@ inline size_t EncodedSizeOfKey(TeMetadata, TeMetadata::ValueType x) {
 // content-type metadata trait.
 struct ContentTypeMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = true;
   // gRPC says that content-type can be application/grpc[;something]
   // Core has only ever verified the prefix.
   // IF we want to start verifying more, we can expand this type.
@@ -150,6 +153,7 @@ struct ContentTypeMetadata {
 // scheme metadata trait.
 struct HttpSchemeMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   enum ValueType : uint8_t {
     kHttp,
     kHttps,
@@ -179,6 +183,7 @@ size_t EncodedSizeOfKey(HttpSchemeMetadata, HttpSchemeMetadata::ValueType x);
 // method metadata trait.
 struct HttpMethodMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   enum ValueType : uint8_t {
     kPost,
     kGet,
@@ -227,6 +232,7 @@ struct CompressionAlgorithmBasedMetadata {
 // grpc-encoding metadata trait.
 struct GrpcEncodingMetadata : public CompressionAlgorithmBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits =
       SmallIntegralValuesCompressor<GRPC_COMPRESS_ALGORITHMS_COUNT>;
   static absl::string_view key() { return "grpc-encoding"; }
@@ -235,6 +241,7 @@ struct GrpcEncodingMetadata : public CompressionAlgorithmBasedMetadata {
 // grpc-internal-encoding-request metadata trait.
 struct GrpcInternalEncodingRequest : public CompressionAlgorithmBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "grpc-internal-encoding-request"; }
 };
@@ -242,6 +249,7 @@ struct GrpcInternalEncodingRequest : public CompressionAlgorithmBasedMetadata {
 // grpc-accept-encoding metadata trait.
 struct GrpcAcceptEncodingMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   static absl::string_view key() { return "grpc-accept-encoding"; }
   using ValueType = CompressionAlgorithmSet;
   using MementoType = ValueType;
@@ -260,6 +268,7 @@ struct GrpcAcceptEncodingMetadata {
 // user-agent metadata trait.
 struct UserAgentMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = StableValueCompressor;
   static absl::string_view key() { return "user-agent"; }
 };
@@ -267,6 +276,7 @@ struct UserAgentMetadata : public SimpleSliceBasedMetadata {
 // grpc-message metadata trait.
 struct GrpcMessageMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "grpc-message"; }
 };
@@ -274,6 +284,7 @@ struct GrpcMessageMetadata : public SimpleSliceBasedMetadata {
 // host metadata trait.
 struct HostMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "host"; }
 };
@@ -281,6 +292,7 @@ struct HostMetadata : public SimpleSliceBasedMetadata {
 // endpoint-load-metrics-bin metadata trait.
 struct EndpointLoadMetricsBinMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "endpoint-load-metrics-bin"; }
 };
@@ -288,6 +300,7 @@ struct EndpointLoadMetricsBinMetadata : public SimpleSliceBasedMetadata {
 // grpc-server-stats-bin metadata trait.
 struct GrpcServerStatsBinMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "grpc-server-stats-bin"; }
 };
@@ -295,6 +308,7 @@ struct GrpcServerStatsBinMetadata : public SimpleSliceBasedMetadata {
 // grpc-trace-bin metadata trait.
 struct GrpcTraceBinMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = FrequentKeyWithNoValueCompressionCompressor;
   static absl::string_view key() { return "grpc-trace-bin"; }
 };
@@ -302,6 +316,7 @@ struct GrpcTraceBinMetadata : public SimpleSliceBasedMetadata {
 // grpc-tags-bin metadata trait.
 struct GrpcTagsBinMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = FrequentKeyWithNoValueCompressionCompressor;
   static absl::string_view key() { return "grpc-tags-bin"; }
 };
@@ -309,6 +324,7 @@ struct GrpcTagsBinMetadata : public SimpleSliceBasedMetadata {
 // XEnvoyPeerMetadata
 struct XEnvoyPeerMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = true;
   using CompressionTraits = StableValueCompressor;
   static absl::string_view key() { return "x-envoy-peer-metadata"; }
 };
@@ -316,6 +332,7 @@ struct XEnvoyPeerMetadata : public SimpleSliceBasedMetadata {
 // :authority metadata trait.
 struct HttpAuthorityMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = SmallSetOfValuesCompressor;
   static absl::string_view key() { return ":authority"; }
 };
@@ -323,6 +340,7 @@ struct HttpAuthorityMetadata : public SimpleSliceBasedMetadata {
 // :path metadata trait.
 struct HttpPathMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = SmallSetOfValuesCompressor;
   static absl::string_view key() { return ":path"; }
 };
@@ -357,6 +375,7 @@ struct SimpleIntBasedMetadata : public SimpleIntBasedMetadataBase<Int> {
 struct GrpcStatusMetadata
     : public SimpleIntBasedMetadata<grpc_status_code, GRPC_STATUS_UNKNOWN> {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = SmallIntegralValuesCompressor<16>;
   static absl::string_view key() { return "grpc-status"; }
 };
@@ -365,6 +384,7 @@ struct GrpcStatusMetadata
 struct GrpcPreviousRpcAttemptsMetadata
     : public SimpleIntBasedMetadata<uint32_t, 0> {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "grpc-previous-rpc-attempts"; }
 };
@@ -372,6 +392,7 @@ struct GrpcPreviousRpcAttemptsMetadata
 // grpc-retry-pushback-ms metadata trait.
 struct GrpcRetryPushbackMsMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   static absl::string_view key() { return "grpc-retry-pushback-ms"; }
   using ValueType = Duration;
   using MementoType = Duration;
@@ -389,6 +410,7 @@ struct GrpcRetryPushbackMsMetadata {
 // TODO(ctiller): consider moving to uint16_t
 struct HttpStatusMetadata : public SimpleIntBasedMetadata<uint32_t, 0> {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = true;
   using CompressionTraits = HttpStatusCompressor;
   static absl::string_view key() { return ":status"; }
 };
@@ -399,6 +421,7 @@ class GrpcLbClientStats;
 
 struct GrpcLbClientStatsMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   static absl::string_view key() { return "grpclb_client_stats"; }
   using ValueType = GrpcLbClientStats*;
   using MementoType = ValueType;
@@ -423,6 +446,7 @@ inline size_t EncodedSizeOfKey(GrpcLbClientStatsMetadata,
 // lb-token metadata
 struct LbTokenMetadata : public SimpleSliceBasedMetadata {
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   using CompressionTraits = NoCompressionCompressor;
   static absl::string_view key() { return "lb-token"; }
 };
@@ -430,6 +454,7 @@ struct LbTokenMetadata : public SimpleSliceBasedMetadata {
 // lb-cost-bin metadata
 struct LbCostBinMetadata {
   static constexpr bool kRepeatable = true;
+  static constexpr bool kTransferOnTrailersOnly = false;
   static absl::string_view key() { return "lb-cost-bin"; }
   struct ValueType {
     double cost;
@@ -451,6 +476,7 @@ struct LbCostBinMetadata {
 struct GrpcStreamNetworkState {
   static absl::string_view DebugKey() { return "GrpcStreamNetworkState"; }
   static constexpr bool kRepeatable = false;
+  static constexpr bool kTransferOnTrailersOnly = false;
   enum ValueType : uint8_t {
     kNotSentOnWire,
     kNotSeenByServer,
@@ -1149,6 +1175,9 @@ MetadataValueAsSlice(typename Which::ValueType value) {
 // struct GrpcXyzMetadata {
 //   // Can this metadata field be repeated?
 //   static constexpr bool kRepeatable = ...;
+//   // Should this metadata be transferred from server headers to trailers on
+//   // Trailers-Only response?
+//   static constexpr bool kTransferOnTrailersOnly = ...;
 //   // The type that's stored on MetadataBatch
 //   using ValueType = ...;
 //   // The type that's stored in compression/decompression tables

src/core/server/server.h

@@ -39,6 +39,7 @@
 #include "absl/types/optional.h"
 
 #include <grpc/grpc.h>
+#include <grpc/passive_listener.h>
 #include <grpc/slice.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/time.h>
@@ -74,6 +75,9 @@
   "grpc.server.max_pending_requests_hard_limit"
 
 namespace grpc_core {
+namespace experimental {
+class PassiveListenerImpl;
+}  // namespace experimental
 
 extern TraceFlag grpc_server_channel_trace;
 
@@ -112,7 +116,7 @@ class Server : public ServerInterface,
   /// Interface for listeners.
   /// Implementations must override the Orphan() method, which should stop
   /// listening and initiate destruction of the listener.
-  class ListenerInterface : public Orphanable {
+  class ListenerInterface : public InternallyRefCounted<ListenerInterface> {
    public:
     ~ListenerInterface() override = default;
 
@@ -212,6 +216,14 @@ class Server : public ServerInterface,
   void SendGoaways() ABSL_LOCKS_EXCLUDED(mu_global_, mu_call_);
 
  private:
+  // note: the grpc_core::Server redundant namespace qualification is
+  // required for older gcc versions.
+  // TODO(yashykt): eliminate this friend statement as part of your upcoming
+  // server listener refactoring.
+  friend absl::Status(::grpc_server_add_passive_listener)(
+      grpc_core::Server* server, grpc_server_credentials* credentials,
+      std::shared_ptr<grpc_core::experimental::PassiveListenerImpl>
+          passive_listener);
   struct RequestedCall;
 
   class RequestMatcherInterface;

src/cpp/ext/otel/otel_client_call_tracer.cc

@@ -88,17 +88,13 @@ OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::CallAttemptTracer(
 
 void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::
     RecordReceivedInitialMetadata(grpc_metadata_batch* recv_initial_metadata) {
-  parent_->scope_config_->active_plugin_options_view().ForEach(
+  if (recv_initial_metadata != nullptr &&
-      [&](const InternalOpenTelemetryPluginOption& plugin_option,
+      recv_initial_metadata->get(grpc_core::GrpcTrailersOnly())
-          size_t /*index*/) {
+          .value_or(false)) {
-        auto* labels_injector = plugin_option.labels_injector();
+    is_trailers_only_ = true;
-        if (labels_injector != nullptr) {
+    return;
-          injected_labels_from_plugin_options_.push_back(
-              labels_injector->GetLabels(recv_initial_metadata));
   }
-        return true;
+  PopulateLabelInjectors(recv_initial_metadata);
-      },
-      parent_->otel_plugin_);
 }
 
 void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::
@@ -143,8 +139,11 @@ void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::
 
 void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::
     RecordReceivedTrailingMetadata(
-        absl::Status status, grpc_metadata_batch* /*recv_trailing_metadata*/,
+        absl::Status status, grpc_metadata_batch* recv_trailing_metadata,
         const grpc_transport_stream_stats* transport_stream_stats) {
+  if (is_trailers_only_) {
+    PopulateLabelInjectors(recv_trailing_metadata);
+  }
   std::array<std::pair<absl::string_view, absl::string_view>, 3>
       additional_labels = {
           {{OpenTelemetryMethodKey(), parent_->MethodForStats()},
@@ -214,6 +213,21 @@ void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::SetOptionalLabel(
   optional_labels_[static_cast<size_t>(key)] = std::move(value);
 }
 
+void OpenTelemetryPlugin::ClientCallTracer::CallAttemptTracer::
+    PopulateLabelInjectors(grpc_metadata_batch* metadata) {
+  parent_->scope_config_->active_plugin_options_view().ForEach(
+      [&](const InternalOpenTelemetryPluginOption& plugin_option,
+          size_t /*index*/) {
+        auto* labels_injector = plugin_option.labels_injector();
+        if (labels_injector != nullptr) {
+          injected_labels_from_plugin_options_.push_back(
+              labels_injector->GetLabels(metadata));
+        }
+        return true;
+      },
+      parent_->otel_plugin_);
+}
+
 //
 // OpenTelemetryPlugin::ClientCallTracer
 //

src/cpp/ext/otel/otel_client_call_tracer.h

@@ -95,6 +95,8 @@ class OpenTelemetryPlugin::ClientCallTracer
                           grpc_core::RefCountedStringValue value) override;
 
    private:
+    void PopulateLabelInjectors(grpc_metadata_batch* metadata);
+
     const ClientCallTracer* parent_;
     const bool arena_allocated_;
     // Start time (for measuring latency).
@@ -106,6 +108,7 @@ class OpenTelemetryPlugin::ClientCallTracer
         optional_labels_;
     std::vector<std::unique_ptr<LabelsIterable>>
         injected_labels_from_plugin_options_;
+    bool is_trailers_only_ = false;
   };
 
   ClientCallTracer(

src/cpp/server/server_builder.cc

@@ -29,6 +29,7 @@
 #include <grpc/impl/channel_arg_names.h>
 #include <grpc/impl/compression_types.h>
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/workaround_list.h>
 #include <grpcpp/completion_queue.h>
@@ -45,11 +46,38 @@
 #include <grpcpp/support/channel_arguments.h>
 #include <grpcpp/support/server_interceptor.h>
 
+#include "src/core/ext/transport/chttp2/server/chttp2_server.h"
 #include "src/core/lib/gpr/string.h"
 #include "src/core/lib/gpr/useful.h"
+#include "src/core/server/server.h"
 #include "src/cpp/server/external_connection_acceptor_impl.h"
 
 namespace grpc {
+namespace {
+
+// A PIMPL wrapper class that owns the only ref to the passive listener
+// implementation. This is returned to the application.
+class PassiveListenerOwner final
+    : public grpc_core::experimental::PassiveListener {
+ public:
+  explicit PassiveListenerOwner(std::shared_ptr<PassiveListener> listener)
+      : listener_(std::move(listener)) {}
+
+  absl::Status AcceptConnectedEndpoint(
+      std::unique_ptr<grpc_event_engine::experimental::EventEngine::Endpoint>
+          endpoint) override {
+    return listener_->AcceptConnectedEndpoint(std::move(endpoint));
+  }
+
+  absl::Status AcceptConnectedFd(int fd) override {
+    return listener_->AcceptConnectedFd(fd);
+  }
+
+ private:
+  std::shared_ptr<PassiveListener> listener_;
+};
+
+}  // namespace
 
 static std::vector<std::unique_ptr<ServerBuilderPlugin> (*)()>*
     g_plugin_factory_list;
@@ -223,6 +251,18 @@ ServerBuilder& ServerBuilder::SetResourceQuota(
   return *this;
 }
 
+ServerBuilder& ServerBuilder::experimental_type::AddPassiveListener(
+    std::shared_ptr<grpc::ServerCredentials> creds,
+    std::unique_ptr<experimental::PassiveListener>& passive_listener) {
+  auto core_passive_listener =
+      std::make_shared<grpc_core::experimental::PassiveListenerImpl>();
+  builder_->unstarted_passive_listeners_.emplace_back(core_passive_listener,
+                                                      std::move(creds));
+  passive_listener =
+      std::make_unique<PassiveListenerOwner>(std::move(core_passive_listener));
+  return *builder_;
+}
+
 ServerBuilder& ServerBuilder::AddListeningPort(
     const std::string& addr_uri, std::shared_ptr<ServerCredentials> creds,
     int* selected_port) {
@@ -396,6 +436,26 @@ std::unique_ptr<grpc::Server> ServerBuilder::BuildAndStart() {
     cq->RegisterServer(server.get());
   }
 
+  for (auto& unstarted_listener : unstarted_passive_listeners_) {
+    has_frequently_polled_cqs = true;
+    auto passive_listener = unstarted_listener.passive_listener.lock();
+    auto* core_server = grpc_core::Server::FromC(server->c_server());
+    if (passive_listener != nullptr) {
+      auto* creds = unstarted_listener.credentials->c_creds();
+      if (creds == nullptr) {
+        gpr_log(GPR_ERROR, "Credentials missing for PassiveListener");
+        return nullptr;
+      }
+      auto success = grpc_server_add_passive_listener(
+          core_server, creds, std::move(passive_listener));
+      if (!success.ok()) {
+        gpr_log(GPR_ERROR, "Failed to create a passive listener: %s",
+                success.ToString().c_str());
+        return nullptr;
+      }
+    }
+  }
+
   if (!has_frequently_polled_cqs) {
     gpr_log(GPR_ERROR,
             "At least one of the completion queues must be frequently polled");

src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec

@@ -106,6 +106,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   # This is only for local development of the plugin: If the Podfile brings this pod from a local
   # directory using `:path`, CocoaPods won't download the zip file and so the plugin won't be

src/objective-c/!ProtoCompiler-gRPCPlugin.podspec

@@ -108,6 +108,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   # Restrict the gRPC runtime version to the one supported by this plugin.
   s.dependency 'gRPC-ProtoRPC', v

src/objective-c/!ProtoCompiler.podspec

@@ -114,6 +114,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   # This is only for local development of protoc: If the Podfile brings this pod from a local
   # directory using `:path`, CocoaPods won't download the zip file and so the compiler won't be

src/objective-c/BoringSSL-GRPC.podspec

@@ -83,6 +83,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   name = 'openssl_grpc'
 

src/objective-c/README.md

@@ -47,6 +47,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.12'
   s.tvos.deployment_target = '12.0'
   s.watchos.deployment_target = '6.0'
+  s.visionos.deployment_target = '1.0'
 
   # Base directory where the .proto files are.
   src = '.'

src/objective-c/tests/version.h

@@ -23,4 +23,4 @@
 // `tools/buildgen/generate_projects.sh`.
 
 #define GRPC_OBJC_VERSION_STRING @"1.64.0-dev"
-#define GRPC_C_VERSION_STRING @"40.0.0"
+#define GRPC_C_VERSION_STRING @"41.0.0"

src/python/grpcio/grpc/_cython/_cygrpc/aio/server.pyx.pxi

@@ -777,7 +777,7 @@ async def _schedule_rpc_coro(object rpc_coro,
         rpc_state,
         rpc_coro,
         loop,
-    ))
+    ), name="HandleExceptions[%s]" % _decode(rpc_state.method()))
     _add_callback_handler(rpc_task, rpc_state)
     await _handle_cancellation_from_core(rpc_task, rpc_state, loop)
 

templates/gRPC-C++.podspec.template

@@ -122,6 +122,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     s.requires_arc = false
 

templates/gRPC-Core.podspec.template

@@ -118,6 +118,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     s.requires_arc = false
 

templates/gRPC-ProtoRPC.podspec.template

@@ -39,6 +39,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     name = 'ProtoRPC'
     s.module_name = name

templates/gRPC-RxLibrary.podspec.template

@@ -39,6 +39,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     name = 'RxLibrary'
     s.module_name = name

templates/gRPC.podspec.template

@@ -51,6 +51,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     # Exposes the privacy manifest. Depended on by any subspecs containing
     # non-interface files.
@@ -85,6 +86,7 @@
       s.osx.deployment_target = '10.12'
       s.tvos.deployment_target = '12.0'
       s.watchos.deployment_target = '6.0'
+      s.visionos.deployment_target = '1.0'
     end
 
     s.subspec 'Interface' do |ss|
@@ -120,6 +122,7 @@
       s.osx.deployment_target = '10.12'
       s.tvos.deployment_target = '12.0'
       s.watchos.deployment_target = '6.0'
+      s.visionos.deployment_target = '1.0'
     end
 
     s.subspec 'GRPCCore' do |ss|
@@ -157,6 +160,7 @@
       s.osx.deployment_target = '10.12'
       s.tvos.deployment_target = '12.0'
       s.watchos.deployment_target = '6.0'
+      s.visionos.deployment_target = '1.0'
     end
 
     s.subspec 'GRPCCoreCronet' do |ss|
@@ -181,6 +185,7 @@
       s.osx.deployment_target = '10.12'
       s.tvos.deployment_target = '12.0'
       s.watchos.deployment_target = '6.0'
+      s.visionos.deployment_target = '1.0'
     end
 
     s.subspec 'InternalTesting' do |ss|
@@ -193,5 +198,6 @@
       s.osx.deployment_target = '10.12'
       s.tvos.deployment_target = '12.0'
       s.watchos.deployment_target = '6.0'
+      s.visionos.deployment_target = '1.0'
     end
   end

templates/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec.template

@@ -108,6 +108,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     # This is only for local development of the plugin: If the Podfile brings this pod from a local
     # directory using `:path`, CocoaPods won't download the zip file and so the plugin won't be

templates/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec.template

@@ -110,6 +110,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     # Restrict the gRPC runtime version to the one supported by this plugin.
     s.dependency 'gRPC-ProtoRPC', v

templates/src/objective-c/!ProtoCompiler.podspec.template

@@ -116,6 +116,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     # This is only for local development of protoc: If the Podfile brings this pod from a local
     # directory using `:path`, CocoaPods won't download the zip file and so the compiler won't be

templates/src/objective-c/BoringSSL-GRPC.podspec.template

@@ -114,6 +114,7 @@
     s.osx.deployment_target = '10.12'
     s.tvos.deployment_target = '12.0'
     s.watchos.deployment_target = '6.0'
+    s.visionos.deployment_target = '1.0'
 
     name = 'openssl_grpc'
 

test/core/event_engine/event_engine_test_utils.h

@@ -19,6 +19,7 @@
 #include <map>
 #include <memory>
 #include <string>
+#include <thread>
 #include <tuple>
 #include <utility>
 #include <vector>
@@ -159,6 +160,70 @@ class NotifyOnDelete {
   grpc_core::Notification* signal_;
 };
 
+// An endpoint implementation that supports Read and Write via std::threads.
+// Passing a grpc_core::Notification will allow owners to know when all
+// in-flight callbacks have been run, and all endpoint state has been destroyed.
+class ThreadedNoopEndpoint : public EventEngine::Endpoint {
+ public:
+  explicit ThreadedNoopEndpoint(grpc_core::Notification* destroyed)
+      : state_(std::make_shared<EndpointState>(destroyed)) {}
+  ~ThreadedNoopEndpoint() override {
+    std::thread deleter([state = state_]() {
+      CleanupThread(state->read);
+      CleanupThread(state->write);
+    });
+    deleter.detach();
+  }
+
+  bool Read(absl::AnyInvocable<void(absl::Status)> on_read, SliceBuffer* buffer,
+            const ReadArgs* /* args */) override {
+    buffer->Clear();
+    CleanupThread(state_->read);
+    state_->read = new std::thread([cb = std::move(on_read)]() mutable {
+      cb(absl::UnknownError("test"));
+    });
+    return false;
+  }
+
+  bool Write(absl::AnyInvocable<void(absl::Status)> on_writable,
+             SliceBuffer* data, const WriteArgs* /* args */) override {
+    data->Clear();
+    CleanupThread(state_->write);
+    state_->write = new std::thread([cb = std::move(on_writable)]() mutable {
+      cb(absl::UnknownError("test"));
+    });
+    return false;
+  }
+
+  const EventEngine::ResolvedAddress& GetPeerAddress() const override {
+    return peer_;
+  }
+
+  const EventEngine::ResolvedAddress& GetLocalAddress() const override {
+    return local_;
+  }
+
+ private:
+  struct EndpointState {
+    explicit EndpointState(grpc_core::Notification* deleter)
+        : delete_notifier_(deleter) {}
+    std::thread* read = nullptr;
+    std::thread* write = nullptr;
+    NotifyOnDelete delete_notifier_;
+  };
+
+  static void CleanupThread(std::thread* thd) {
+    if (thd != nullptr) {
+      thd->join();
+      delete thd;
+    }
+  }
+
+  std::shared_ptr<EndpointState> state_;
+  EventEngine::ResolvedAddress peer_;
+  EventEngine::ResolvedAddress local_;
+};
+
 }  // namespace experimental
 }  // namespace grpc_event_engine
 

test/core/test_util/BUILD

@@ -73,7 +73,6 @@ grpc_cc_library(
         "fuzzer_util.h",
         "grpc_profiler.h",
         "histogram.h",
-        "mock_authorization_endpoint.h",
         "mock_endpoint.h",
         "parse_hexstring.h",
         "resolve_localhost_ip46.h",

test/core/test_util/mock_authorization_endpoint.h

@@ -1,66 +0,0 @@
-// Copyright 2021 gRPC authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef GRPC_TEST_CORE_TEST_UTIL_MOCK_AUTHORIZATION_ENDPOINT_H
-#define GRPC_TEST_CORE_TEST_UTIL_MOCK_AUTHORIZATION_ENDPOINT_H
-
-#include <string>
-
-#include "absl/strings/string_view.h"
-
-#include <grpc/support/port_platform.h>
-
-#include "src/core/lib/iomgr/endpoint.h"
-
-namespace grpc_core {
-
-class MockAuthorizationEndpoint : public grpc_endpoint {
- public:
-  MockAuthorizationEndpoint(absl::string_view local_uri,
-                            absl::string_view peer_uri)
-      : local_address_(local_uri), peer_address_(peer_uri) {
-    static constexpr grpc_endpoint_vtable vtable = {
-        nullptr, nullptr, nullptr,         nullptr, nullptr, nullptr,
-        nullptr, GetPeer, GetLocalAddress, nullptr, nullptr};
-    grpc_endpoint::vtable = &vtable;
-  }
-
-  static absl::string_view GetPeer(grpc_endpoint* ep) {
-    MockAuthorizationEndpoint* m =
-        reinterpret_cast<MockAuthorizationEndpoint*>(ep);
-    return m->peer_address_;
-  }
-
-  static absl::string_view GetLocalAddress(grpc_endpoint* ep) {
-    MockAuthorizationEndpoint* m =
-        reinterpret_cast<MockAuthorizationEndpoint*>(ep);
-    return m->local_address_;
-  }
-
-  void SetPeer(absl::string_view peer_address) {
-    peer_address_ = std::string(peer_address);
-  }
-
-  void SetLocalAddress(absl::string_view local_address) {
-    local_address_ = std::string(local_address);
-  }
-
- private:
-  std::string local_address_;
-  std::string peer_address_;
-};
-
-}  // namespace grpc_core
-
-#endif  // GRPC_TEST_CORE_TEST_UTIL_MOCK_AUTHORIZATION_ENDPOINT_H

test/cpp/ext/csm/metadata_exchange_test.cc

@@ -157,12 +157,7 @@ class MetadataExchangeTest
     : public OpenTelemetryPluginEnd2EndTest,
       public ::testing::WithParamInterface<TestScenario> {
  protected:
-  void Init(
+  void Init(Options options, bool enable_client_side_injector = true) {
-      const std::vector<absl::string_view>& metric_names,
-      bool enable_client_side_injector = true,
-      std::map<grpc_core::ClientCallTracer::CallAttemptTracer::OptionalLabelKey,
-               grpc_core::RefCountedStringValue>
-          labels_to_inject = {}) {
     const char* kBootstrap =
         "{\"node\": {\"id\": "
         "\"projects/1234567890/networks/mesh:mesh-id/nodes/"
@@ -182,11 +177,9 @@ class MetadataExchangeTest
         break;
     }
     OpenTelemetryPluginEnd2EndTest::Init(std::move(
-        Options()
+        options
-            .set_metric_names(metric_names)
             .add_plugin_option(std::make_unique<MeshLabelsPluginOption>(
                 GetParam().GetTestResource().GetAttributes()))
-            .set_labels_to_inject(std::move(labels_to_inject))
             .set_channel_scope_filter(
                 [enable_client_side_injector](
                     const OpenTelemetryPluginBuilder::ChannelScope& /*scope*/) {
@@ -284,8 +277,9 @@ class MetadataExchangeTest
 
 // Verify that grpc.client.attempt.started does not get service mesh attributes
 TEST_P(MetadataExchangeTest, ClientAttemptStarted) {
-  Init(/*metric_names=*/{
+  Init(std::move(
-      grpc::OpenTelemetryPluginBuilder::kClientAttemptStartedInstrumentName});
+      Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
+                                      kClientAttemptStartedInstrumentName})));
   SendRPC();
   const char* kMetricName = "grpc.client.attempt.started";
   auto data = ReadCurrentMetricsData(
@@ -308,8 +302,9 @@ TEST_P(MetadataExchangeTest, ClientAttemptStarted) {
 }
 
 TEST_P(MetadataExchangeTest, ClientAttemptDuration) {
-  Init(/*metric_names=*/{
+  Init(std::move(
-      grpc::OpenTelemetryPluginBuilder::kClientAttemptDurationInstrumentName});
+      Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
+                                      kClientAttemptDurationInstrumentName})));
   SendRPC();
   const char* kMetricName = "grpc.client.attempt.duration";
   auto data = ReadCurrentMetricsData(
@@ -333,9 +328,8 @@ TEST_P(MetadataExchangeTest, ClientAttemptDuration) {
 
 // Verify that grpc.server.call.started does not get service mesh attributes
 TEST_P(MetadataExchangeTest, ServerCallStarted) {
-  Init(
+  Init(std::move(Options().set_metric_names(
-      /*metric_names=*/{
+      {grpc::OpenTelemetryPluginBuilder::kServerCallStartedInstrumentName})));
-          grpc::OpenTelemetryPluginBuilder::kServerCallStartedInstrumentName});
   SendRPC();
   const char* kMetricName = "grpc.server.call.started";
   auto data = ReadCurrentMetricsData(
@@ -354,9 +348,8 @@ TEST_P(MetadataExchangeTest, ServerCallStarted) {
 }
 
 TEST_P(MetadataExchangeTest, ServerCallDuration) {
-  Init(
+  Init(std::move(Options().set_metric_names(
-      /*metric_names=*/{
+      {grpc::OpenTelemetryPluginBuilder::kServerCallDurationInstrumentName})));
-          grpc::OpenTelemetryPluginBuilder::kServerCallDurationInstrumentName});
   SendRPC();
   const char* kMetricName = "grpc.server.call.duration";
   auto data = ReadCurrentMetricsData(
@@ -378,9 +371,9 @@ TEST_P(MetadataExchangeTest, ServerCallDuration) {
 
 // Test that the server records unknown when the client does not send metadata
 TEST_P(MetadataExchangeTest, ClientDoesNotSendMetadata) {
-  Init(
+  Init(std::move(
-      /*metric_names=*/{grpc::OpenTelemetryPluginBuilder::
+           Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
-                            kServerCallDurationInstrumentName},
+                                           kServerCallDurationInstrumentName})),
        /*enable_client_side_injector=*/false);
   SendRPC();
   const char* kMetricName = "grpc.server.call.duration";
@@ -407,14 +400,15 @@ TEST_P(MetadataExchangeTest, ClientDoesNotSendMetadata) {
 }
 
 TEST_P(MetadataExchangeTest, VerifyCsmServiceLabels) {
-  Init(/*metric_names=*/{grpc::OpenTelemetryPluginBuilder::
+  Init(std::move(
-                             kClientAttemptDurationInstrumentName},
+      Options()
-       /*enable_client_side_injector=*/true,
+          .set_metric_names({grpc::OpenTelemetryPluginBuilder::
-       // Injects CSM service labels to be recorded in the call.
+                                 kClientAttemptDurationInstrumentName})
+          .set_labels_to_inject(
               {{OptionalLabelKey::kXdsServiceName,
                 grpc_core::RefCountedStringValue("myservice")},
                {OptionalLabelKey::kXdsServiceNamespace,
-         grpc_core::RefCountedStringValue("mynamespace")}});
+                grpc_core::RefCountedStringValue("mynamespace")}})));
   SendRPC();
   const char* kMetricName = "grpc.client.attempt.duration";
   auto data = ReadCurrentMetricsData(
@@ -430,6 +424,51 @@ TEST_P(MetadataExchangeTest, VerifyCsmServiceLabels) {
             "mynamespace");
 }
 
+TEST_P(MetadataExchangeTest, Retries) {
+  Init(std::move(
+      Options()
+          .set_metric_names({grpc::OpenTelemetryPluginBuilder::
+                                 kClientAttemptDurationInstrumentName})
+          .set_service_config(
+              "{\n"
+              "  \"methodConfig\": [ {\n"
+              "    \"name\": [\n"
+              "      { \"service\": \"grpc.testing.EchoTestService\" }\n"
+              "    ],\n"
+              "    \"retryPolicy\": {\n"
+              "      \"maxAttempts\": 3,\n"
+              "      \"initialBackoff\": \"0.1s\",\n"
+              "      \"maxBackoff\": \"120s\",\n"
+              "      \"backoffMultiplier\": 1,\n"
+              "      \"retryableStatusCodes\": [ \"ABORTED\" ]\n"
+              "    }\n"
+              "  } ]\n"
+              "}")));
+  EchoRequest request;
+  request.mutable_param()->mutable_expected_error()->set_code(
+      StatusCode::ABORTED);
+  EchoResponse response;
+  grpc::ClientContext context;
+  grpc::Status status = stub_->Echo(&context, request, &response);
+  const char* kMetricName = "grpc.client.attempt.duration";
+  auto data = ReadCurrentMetricsData(
+      [&](const absl::flat_hash_map<
+          std::string,
+          std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
+              data) {
+        return !data.contains(kMetricName) ||
+               absl::get<opentelemetry::sdk::metrics::HistogramPointData>(
+                   data.at(kMetricName)[0].point_data)
+                       .count_ != 3;
+      });
+  ASSERT_EQ(absl::get<opentelemetry::sdk::metrics::HistogramPointData>(
+                data.at(kMetricName)[0].point_data)
+                .count_,
+            3);
+  VerifyServiceMeshAttributes(data.at(kMetricName)[0].attributes,
+                              /*is_client=*/true);
+}
+
 // Creates a serialized slice with labels for metadata exchange based on \a
 // resource.
 grpc_core::Slice RemoteMetadataSliceFromResource(

test/cpp/ext/otel/otel_test_library.cc

@@ -148,6 +148,9 @@ void OpenTelemetryPluginEnd2EndTest::Init(Options config) {
         });
     channel_args.SetPointer(GRPC_ARG_LABELS_TO_INJECT, &labels_to_inject_);
   }
+  if (!config.service_config.empty()) {
+    channel_args.SetString(GRPC_ARG_SERVICE_CONFIG, config.service_config);
+  }
   reader_ = BuildAndRegisterOpenTelemetryPlugin(std::move(config));
   grpc_init();
   grpc::ServerBuilder builder;

test/cpp/ext/otel/otel_test_library.h

@@ -86,6 +86,11 @@ class OpenTelemetryPluginEnd2EndTest : public ::testing::Test {
       return *this;
     }
 
+    Options& set_service_config(std::string svc_cfg) {
+      service_config = std::move(svc_cfg);
+      return *this;
+    }
+
     Options& set_channel_scope_filter(
         absl::AnyInvocable<bool(
             const OpenTelemetryPluginBuilder::ChannelScope& /*scope*/) const>
@@ -138,6 +143,7 @@ class OpenTelemetryPluginEnd2EndTest : public ::testing::Test {
     std::map<grpc_core::ClientCallTracer::CallAttemptTracer::OptionalLabelKey,
              grpc_core::RefCountedStringValue>
         labels_to_inject;
+    std::string service_config;
     absl::AnyInvocable<bool(
         const OpenTelemetryPluginBuilder::ChannelScope& /*scope*/) const>
         channel_scope_filter;

test/cpp/server/BUILD

@@ -28,6 +28,7 @@ grpc_cc_test(
     deps = [
         "//:grpc++_unsecure",
         "//src/proto/grpc/testing:echo_proto",
+        "//test/core/event_engine:event_engine_test_utils",
         "//test/core/test_util:grpc_test_util_base",
         "//test/core/test_util:grpc_test_util_unsecure",
     ],

test/cpp/server/server_builder_test.cc

@@ -16,14 +16,19 @@
 //
 //
 
+#include <sys/socket.h>
+
 #include <gtest/gtest.h>
 
+#include <grpc/event_engine/slice_buffer.h>
 #include <grpc/grpc.h>
 #include <grpcpp/server.h>
 #include <grpcpp/server_builder.h>
 #include <grpcpp/support/config.h>
 
+#include "src/core/lib/gprpp/notification.h"
 #include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/core/event_engine/event_engine_test_utils.h"
 #include "test/core/test_util/port.h"
 #include "test/core/test_util/test_config.h"
 
@@ -83,6 +88,56 @@ TEST_F(ServerBuilderTest, CreateServerRepeatedPortWithDisallowedReusePort) {
             nullptr);
 }
 
+TEST_F(ServerBuilderTest, AddPassiveListener) {
+  std::unique_ptr<experimental::PassiveListener> passive_listener;
+  auto server =
+      ServerBuilder()
+          .experimental()
+          .AddPassiveListener(InsecureServerCredentials(), passive_listener)
+          .BuildAndStart();
+  server->Shutdown();
+}
+
+TEST_F(ServerBuilderTest, PassiveListenerAcceptConnectedFd) {
+  std::unique_ptr<experimental::PassiveListener> passive_listener;
+  ServerBuilder builder;
+  auto cq = builder.AddCompletionQueue();
+  // TODO(hork): why is the service necessary? Queue isn't drained otherwise.
+  auto server =
+      builder.RegisterService(&g_service)
+          .experimental()
+          .AddPassiveListener(InsecureServerCredentials(), passive_listener)
+          .BuildAndStart();
+  ASSERT_NE(server.get(), nullptr);
+#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
+  int fd = socket(AF_INET, SOCK_STREAM, 0);
+  auto accept_status = passive_listener->AcceptConnectedFd(fd);
+  ASSERT_TRUE(accept_status.ok()) << accept_status;
+#else
+  int fd = -1;
+  auto accept_status = passive_listener->AcceptConnectedFd(fd);
+  ASSERT_FALSE(accept_status.ok()) << accept_status;
+#endif
+  server->Shutdown();
+}
+
+TEST_F(ServerBuilderTest, PassiveListenerAcceptConnectedEndpoint) {
+  std::unique_ptr<experimental::PassiveListener> passive_listener;
+  auto server =
+      ServerBuilder()
+          .experimental()
+          .AddPassiveListener(InsecureServerCredentials(), passive_listener)
+          .BuildAndStart();
+  grpc_core::Notification endpoint_destroyed;
+  auto success = passive_listener->AcceptConnectedEndpoint(
+      std::make_unique<grpc_event_engine::experimental::ThreadedNoopEndpoint>(
+          &endpoint_destroyed));
+  ASSERT_TRUE(success.ok())
+      << "AcceptConnectedEndpoint failure: " << success.ToString();
+  endpoint_destroyed.WaitForNotification();
+  server->Shutdown();
+}
+
 }  // namespace
 }  // namespace grpc
 

tools/buildgen/extract_metadata_from_bazel_xml.py

@@ -828,7 +828,9 @@ def _exclude_unwanted_cc_tests(tests: List[str]) -> List[str]:
         test
         for test in tests
         if not test.startswith("test/cpp/ext/filters/census:")
-        and not test.startswith("test/core/xds:xds_channel_stack_modifier_test")
+        and not test.startswith(
+            "test/core/server:xds_channel_stack_modifier_test"
+        )
         and not test.startswith("test/cpp/ext/gcp:")
         and not test.startswith("test/cpp/ext/filters/logging:")
         and not test.startswith("test/cpp/interop:observability_interop")

tools/distrib/check_namespace_qualification.py

@@ -77,6 +77,10 @@ IGNORED_FILES = [
     "src/core/lib/gprpp/global_config_env.h",
     "src/core/lib/profiling/timers.h",
     "src/core/lib/gprpp/crash.h",
+    # The grpc_core::Server redundant namespace qualification is required for
+    # older gcc versions.
+    "src/core/ext/transport/chttp2/server/chttp2_server.h",
+    "src/core/server/server.h",
 ]
 
 # find our home

tools/distrib/check_redundant_namespace_qualifiers.py

@@ -21,6 +21,13 @@ import os
 import re
 import sys
 
+IGNORED_FILES = [
+    # note: the grpc_core::Server redundant namespace qualification is required
+    # for older gcc versions.
+    "src/core/ext/transport/chttp2/server/chttp2_server.h",
+    "src/core/server/server.h",
+]
+
 
 def find_closing_mustache(contents, initial_depth):
     """Find the closing mustache for a given number of open mustaches."""
@@ -166,6 +173,8 @@ for config in _CONFIGURATION:
             for file in files:
                 if file.endswith(".cc") or file.endswith(".h"):
                     path = os.path.join(root, file)
+                    if path in IGNORED_FILES:
+                        continue
                     try:
                         with open(path) as f:
                             contents = f.read()

tools/doxygen/Doxyfile.c++

@@ -928,6 +928,7 @@ include/grpc/impl/grpc_types.h \
 include/grpc/impl/propagation_bits.h \
 include/grpc/impl/slice_type.h \
 include/grpc/load_reporting.h \
+include/grpc/passive_listener.h \
 include/grpc/slice.h \
 include/grpc/slice_buffer.h \
 include/grpc/status.h \
@@ -1040,6 +1041,7 @@ include/grpcpp/impl/server_initializer.h \
 include/grpcpp/impl/service_type.h \
 include/grpcpp/impl/status.h \
 include/grpcpp/impl/sync.h \
+include/grpcpp/passive_listener.h \
 include/grpcpp/resource_quota.h \
 include/grpcpp/security/audit_logging.h \
 include/grpcpp/security/auth_context.h \

tools/doxygen/Doxyfile.c++.internal

@@ -928,6 +928,7 @@ include/grpc/impl/grpc_types.h \
 include/grpc/impl/propagation_bits.h \
 include/grpc/impl/slice_type.h \
 include/grpc/load_reporting.h \
+include/grpc/passive_listener.h \
 include/grpc/slice.h \
 include/grpc/slice_buffer.h \
 include/grpc/status.h \
@@ -1040,6 +1041,7 @@ include/grpcpp/impl/server_initializer.h \
 include/grpcpp/impl/service_type.h \
 include/grpcpp/impl/status.h \
 include/grpcpp/impl/sync.h \
+include/grpcpp/passive_listener.h \
 include/grpcpp/resource_quota.h \
 include/grpcpp/security/audit_logging.h \
 include/grpcpp/security/auth_context.h \

tools/doxygen/Doxyfile.core

@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 40.0.0
+PROJECT_NUMBER         = 41.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -861,6 +861,7 @@ include/grpc/impl/grpc_types.h \
 include/grpc/impl/propagation_bits.h \
 include/grpc/impl/slice_type.h \
 include/grpc/load_reporting.h \
+include/grpc/passive_listener.h \
 include/grpc/slice.h \
 include/grpc/slice_buffer.h \
 include/grpc/status.h \

tools/doxygen/Doxyfile.core.internal

@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 40.0.0
+PROJECT_NUMBER         = 41.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -861,6 +861,7 @@ include/grpc/impl/grpc_types.h \
 include/grpc/impl/propagation_bits.h \
 include/grpc/impl/slice_type.h \
 include/grpc/load_reporting.h \
+include/grpc/passive_listener.h \
 include/grpc/slice.h \
 include/grpc/slice_buffer.h \
 include/grpc/status.h \

tools/internal_ci/helper_scripts/prepare_build_macos_rc

@@ -99,7 +99,7 @@ then
   # cocoapods
   export LANG=en_US.UTF-8
   # use "sudo" to avoid permission error on kokoro monterey image
-  time sudo gem install cocoapods --version 1.12.0 --no-document --user-install
+  time sudo gem install cocoapods --version 1.15.2 --no-document --user-install
   # pre-fetch cocoapods master repo's most recent commit only
   mkdir -p ~/.cocoapods/repos
   time git clone --depth 1 https://github.com/CocoaPods/Specs.git ~/.cocoapods/repos/master

tools/run_tests/generated/tests.json

@@ -11765,30 +11765,6 @@
     ],
     "uses_polling": false
   },
-  {
-    "args": [],
-    "benchmark": false,
-    "ci_platforms": [
-      "linux",
-      "mac",
-      "posix",
-      "windows"
-    ],
-    "cpu_cost": 1.0,
-    "exclude_configs": [],
-    "exclude_iomgrs": [],
-    "flaky": false,
-    "gtest": true,
-    "language": "c++",
-    "name": "xds_channel_stack_modifier_test",
-    "platforms": [
-      "linux",
-      "mac",
-      "posix",
-      "windows"
-    ],
-    "uses_polling": false
-  },
   {
     "args": [],
     "benchmark": false,