diff options
Diffstat (limited to 'src/core')
10 files changed, 266 insertions, 61 deletions
diff --git a/src/core/ext/filters/client_channel/client_channel_plugin.cc b/src/core/ext/filters/client_channel/client_channel_plugin.cc index 3c3a97532f..ed3ebd2696 100644 --- a/src/core/ext/filters/client_channel/client_channel_plugin.cc +++ b/src/core/ext/filters/client_channel/client_channel_plugin.cc @@ -39,6 +39,8 @@ static bool append_filter(grpc_channel_stack_builder* builder, void* arg) { builder, static_cast<const grpc_channel_filter*>(arg), nullptr, nullptr); } +// Only used for direct channels, as they don't create subchannels, which is +// where default authority is handled for regular channels. static bool set_default_host_if_unset(grpc_channel_stack_builder* builder, void* unused) { const grpc_channel_args* args = @@ -69,7 +71,7 @@ void grpc_client_channel_init(void) { grpc_proxy_mapper_registry_init(); grpc_register_http_proxy_mapper(); grpc_subchannel_index_init(); - grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MIN, + grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MIN, set_default_host_if_unset, nullptr); grpc_channel_init_register_stage( GRPC_CLIENT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, append_filter, diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc index cb39e4224e..49918e11b7 100644 --- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc +++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc @@ -504,9 +504,7 @@ GrpcLb::BalancerCallState::BalancerCallState( // the polling entities from client_channel. GPR_ASSERT(grpclb_policy()->server_name_ != nullptr); GPR_ASSERT(grpclb_policy()->server_name_[0] != '\0'); - grpc_slice host = - grpc_slice_from_copied_string(grpclb_policy()->server_name_); - grpc_millis deadline = + const grpc_millis deadline = grpclb_policy()->lb_call_timeout_ms_ == 0 ? GRPC_MILLIS_INF_FUTURE : ExecCtx::Get()->Now() + grpclb_policy()->lb_call_timeout_ms_; @@ -514,8 +512,7 @@ GrpcLb::BalancerCallState::BalancerCallState( grpclb_policy()->lb_channel_, nullptr, GRPC_PROPAGATE_DEFAULTS, grpclb_policy_->interested_parties(), GRPC_MDSTR_SLASH_GRPC_DOT_LB_DOT_V1_DOT_LOADBALANCER_SLASH_BALANCELOAD, - &host, deadline, nullptr); - grpc_slice_unref_internal(host); + nullptr, deadline, nullptr); // Init the LB call request payload. grpc_grpclb_request* request = grpc_grpclb_request_create(grpclb_policy()->server_name_); @@ -982,6 +979,10 @@ grpc_channel_args* BuildBalancerChannelArgs( // with the one from the grpclb policy, used to propagate updates to // the LB channel. GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR, + // The LB channel should use the authority indicated by the target + // authority table (see \a grpc_lb_policy_grpclb_modify_lb_channel_args), + // as opposed to the authority from the parent channel. + GRPC_ARG_DEFAULT_AUTHORITY, }; // Channel args to add. const grpc_arg args_to_add[] = { diff --git a/src/core/ext/transport/chttp2/client/insecure/channel_create.cc b/src/core/ext/transport/chttp2/client/insecure/channel_create.cc index 60800365b8..8424cc5bc6 100644 --- a/src/core/ext/transport/chttp2/client/insecure/channel_create.cc +++ b/src/core/ext/transport/chttp2/client/insecure/channel_create.cc @@ -38,11 +38,41 @@ static void client_channel_factory_ref( static void client_channel_factory_unref( grpc_client_channel_factory* cc_factory) {} +static grpc_channel_args* add_default_authority_if_not_present( + const grpc_channel_args* args) { + const bool has_default_authority = + grpc_channel_args_find(args, GRPC_ARG_DEFAULT_AUTHORITY) != nullptr; + grpc_arg new_args[1]; + size_t num_new_args = 0; + grpc_core::UniquePtr<char> default_authority; + if (!has_default_authority) { + const grpc_arg* server_uri_arg = + grpc_channel_args_find(args, GRPC_ARG_SERVER_URI); + const char* server_uri_str = grpc_channel_arg_get_string(server_uri_arg); + GPR_ASSERT(server_uri_str != nullptr); + default_authority = + grpc_core::ResolverRegistry::GetDefaultAuthority(server_uri_str); + GPR_ASSERT(default_authority != nullptr); + new_args[num_new_args++] = grpc_channel_arg_string_create( + const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), default_authority.get()); + } + return grpc_channel_args_copy_and_add(args, new_args, num_new_args); +} + static grpc_subchannel* client_channel_factory_create_subchannel( grpc_client_channel_factory* cc_factory, const grpc_subchannel_args* args) { + grpc_subchannel_args* final_sc_args = + static_cast<grpc_subchannel_args*>(gpr_malloc(sizeof(*final_sc_args))); + memcpy(final_sc_args, args, sizeof(*args)); + final_sc_args->args = add_default_authority_if_not_present(args->args); + grpc_connector* connector = grpc_chttp2_connector_create(); - grpc_subchannel* s = grpc_subchannel_create(connector, args); + grpc_subchannel* s = grpc_subchannel_create(connector, final_sc_args); grpc_connector_unref(connector); + + grpc_channel_args_destroy( + const_cast<grpc_channel_args*>(final_sc_args->args)); + gpr_free(final_sc_args); return s; } @@ -56,8 +86,8 @@ static grpc_channel* client_channel_factory_create_channel( // Add channel arg containing the server URI. grpc_core::UniquePtr<char> canonical_target = grpc_core::ResolverRegistry::AddDefaultPrefixIfNeeded(target); - grpc_arg arg = grpc_channel_arg_string_create((char*)GRPC_ARG_SERVER_URI, - canonical_target.get()); + grpc_arg arg = grpc_channel_arg_string_create( + const_cast<char*>(GRPC_ARG_SERVER_URI), canonical_target.get()); const char* to_remove[] = {GRPC_ARG_SERVER_URI}; grpc_channel_args* new_args = grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1); diff --git a/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc b/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc index a82009ff69..5ce73a95d7 100644 --- a/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc +++ b/src/core/ext/transport/chttp2/client/secure/secure_channel_create.cc @@ -71,9 +71,6 @@ static grpc_subchannel_args* get_secure_naming_subchannel_args( grpc_uri* server_uri = grpc_uri_parse(server_uri_str, true /* supress errors */); GPR_ASSERT(server_uri != nullptr); - const char* server_uri_path; - server_uri_path = - server_uri->path[0] == '/' ? server_uri->path + 1 : server_uri->path; const grpc_core::TargetAuthorityTable* target_authority_table = grpc_core::FindTargetAuthorityTableInArgs(args->args); grpc_core::UniquePtr<char> authority; @@ -98,33 +95,49 @@ static grpc_subchannel_args* get_secure_naming_subchannel_args( // authority table was present or because the target was not present // in the table), fall back to using the original server URI. if (authority == nullptr) { - authority.reset(gpr_strdup(server_uri_path)); + authority = + grpc_core::ResolverRegistry::GetDefaultAuthority(server_uri_str); } + grpc_arg args_to_add[2]; + size_t num_args_to_add = 0; + if (grpc_channel_args_find(args->args, GRPC_ARG_DEFAULT_AUTHORITY) == + nullptr) { + // If the channel args don't already contain GRPC_ARG_DEFAULT_AUTHORITY, add + // the arg, setting it to the value just obtained. + args_to_add[num_args_to_add++] = grpc_channel_arg_string_create( + const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), authority.get()); + } + grpc_channel_args* args_with_authority = + grpc_channel_args_copy_and_add(args->args, args_to_add, num_args_to_add); grpc_uri_destroy(server_uri); grpc_channel_security_connector* subchannel_security_connector = nullptr; // Create the security connector using the credentials and target name. grpc_channel_args* new_args_from_connector = nullptr; const grpc_security_status security_status = grpc_channel_credentials_create_security_connector( - channel_credentials, authority.get(), args->args, + channel_credentials, authority.get(), args_with_authority, &subchannel_security_connector, &new_args_from_connector); if (security_status != GRPC_SECURITY_OK) { gpr_log(GPR_ERROR, "Failed to create secure subchannel for secure name '%s'", authority.get()); + grpc_channel_args_destroy(args_with_authority); return nullptr; } grpc_arg new_security_connector_arg = grpc_security_connector_to_arg(&subchannel_security_connector->base); grpc_channel_args* new_args = grpc_channel_args_copy_and_add( - new_args_from_connector != nullptr ? new_args_from_connector : args->args, + new_args_from_connector != nullptr ? new_args_from_connector + : args_with_authority, &new_security_connector_arg, 1); + GRPC_SECURITY_CONNECTOR_UNREF(&subchannel_security_connector->base, "lb_channel_create"); if (new_args_from_connector != nullptr) { grpc_channel_args_destroy(new_args_from_connector); } + grpc_channel_args_destroy(args_with_authority); grpc_subchannel_args* final_sc_args = static_cast<grpc_subchannel_args*>(gpr_malloc(sizeof(*final_sc_args))); memcpy(final_sc_args, args, sizeof(*args)); diff --git a/src/core/lib/channel/client_authority_filter.cc b/src/core/lib/channel/client_authority_filter.cc new file mode 100644 index 0000000000..57c5d29a93 --- /dev/null +++ b/src/core/lib/channel/client_authority_filter.cc @@ -0,0 +1,117 @@ +/* + * + * Copyright 2017 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. + * + */ + +#include <grpc/support/port_platform.h> + +#include <assert.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> + +#include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/channel/client_authority_filter.h" +#include "src/core/lib/gpr/string.h" +#include "src/core/lib/slice/slice_internal.h" +#include "src/core/lib/slice/slice_string_helpers.h" +#include "src/core/lib/surface/call.h" +#include "src/core/lib/surface/channel_init.h" +#include "src/core/lib/surface/channel_stack_type.h" +#include "src/core/lib/transport/static_metadata.h" + +namespace { + +struct call_data { + grpc_linked_mdelem authority_storage; + grpc_call_combiner* call_combiner; +}; + +struct channel_data { + grpc_slice default_authority; +}; + +void authority_start_transport_stream_op_batch( + grpc_call_element* elem, grpc_transport_stream_op_batch* batch) { + channel_data* chand = static_cast<channel_data*>(elem->channel_data); + call_data* calld = static_cast<call_data*>(elem->call_data); + // Handle send_initial_metadata. + auto* initial_metadata = + batch->payload->send_initial_metadata.send_initial_metadata; + // If the initial metadata doesn't already contain :authority, add it. + if (batch->send_initial_metadata && + initial_metadata->idx.named.authority == nullptr) { + grpc_error* error = grpc_metadata_batch_add_head( + initial_metadata, &calld->authority_storage, + grpc_mdelem_from_slices(GRPC_MDSTR_AUTHORITY, + grpc_slice_ref(chand->default_authority))); + if (error != GRPC_ERROR_NONE) { + grpc_transport_stream_op_batch_finish_with_failure(batch, error, + calld->call_combiner); + return; + } + } + // Pass control down the stack. + grpc_call_next_op(elem, batch); +} + +/* Constructor for call_data */ +grpc_error* init_call_elem(grpc_call_element* elem, + const grpc_call_element_args* args) { + call_data* calld = static_cast<call_data*>(elem->call_data); + calld->call_combiner = args->call_combiner; + return GRPC_ERROR_NONE; +} + +/* Destructor for call_data */ +void destroy_call_elem(grpc_call_element* elem, + const grpc_call_final_info* final_info, + grpc_closure* ignored) {} + +/* Constructor for channel_data */ +grpc_error* init_channel_elem(grpc_channel_element* elem, + grpc_channel_element_args* args) { + channel_data* chand = static_cast<channel_data*>(elem->channel_data); + const grpc_arg* default_authority_arg = + grpc_channel_args_find(args->channel_args, GRPC_ARG_DEFAULT_AUTHORITY); + GPR_ASSERT(default_authority_arg != nullptr); + chand->default_authority = grpc_slice_from_copied_string( + grpc_channel_arg_get_string(default_authority_arg)); + GPR_ASSERT(!args->is_last); + return GRPC_ERROR_NONE; +} + +/* Destructor for channel data */ +void destroy_channel_elem(grpc_channel_element* elem) { + channel_data* chand = static_cast<channel_data*>(elem->channel_data); + grpc_slice_unref(chand->default_authority); +} +} // namespace + +const grpc_channel_filter grpc_client_authority_filter = { + authority_start_transport_stream_op_batch, + grpc_channel_next_op, + sizeof(call_data), + init_call_elem, + grpc_call_stack_ignore_set_pollset_or_pollset_set, + destroy_call_elem, + sizeof(channel_data), + init_channel_elem, + destroy_channel_elem, + grpc_channel_next_get_info, + "authority"}; diff --git a/src/core/lib/channel/client_authority_filter.h b/src/core/lib/channel/client_authority_filter.h new file mode 100644 index 0000000000..ba996dc823 --- /dev/null +++ b/src/core/lib/channel/client_authority_filter.h @@ -0,0 +1,34 @@ +/* + * + * Copyright 2017 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_CORE_LIB_CHANNEL_CLIENT_AUTHORITY_FILTER_H +#define GRPC_CORE_LIB_CHANNEL_CLIENT_AUTHORITY_FILTER_H + +#include <grpc/support/port_platform.h> + +#include <grpc/impl/codegen/compression_types.h> + +#include "src/core/lib/channel/channel_stack.h" + +/// Filter responsible for setting the authority header, if not already set. It +/// uses the value of the GRPC_ARG_DEFAULT_AUTHORITY channel arg if the initial +/// metadata doesn't already contain an authority value. + +extern const grpc_channel_filter grpc_client_authority_filter; + +#endif /* GRPC_CORE_LIB_CHANNEL_CLIENT_AUTHORITY_FILTER_H */ diff --git a/src/core/lib/security/credentials/ssl/ssl_credentials.cc b/src/core/lib/security/credentials/ssl/ssl_credentials.cc index 252b25bc0a..295f13c3b7 100644 --- a/src/core/lib/security/credentials/ssl/ssl_credentials.cc +++ b/src/core/lib/security/credentials/ssl/ssl_credentials.cc @@ -58,7 +58,7 @@ static grpc_security_status ssl_create_security_connector( const char* overridden_target_name = nullptr; for (size_t i = 0; args && i < args->num_args; i++) { grpc_arg* arg = &args->args[i]; - if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 && + if (strcmp(arg->key, GRPC_ARG_DEFAULT_AUTHORITY) == 0 && arg->type == GRPC_ARG_STRING) { overridden_target_name = arg->value.string; break; diff --git a/src/core/lib/security/security_connector/security_connector.cc b/src/core/lib/security/security_connector/security_connector.cc index 3cc151bec7..7b90b19075 100644 --- a/src/core/lib/security/security_connector/security_connector.cc +++ b/src/core/lib/security/security_connector/security_connector.cc @@ -465,12 +465,10 @@ static bool fake_channel_check_call_host(grpc_channel_security_connector* sc, grpc_error** error) { grpc_fake_channel_security_connector* c = reinterpret_cast<grpc_fake_channel_security_connector*>(sc); - if (c->is_lb_channel) { - // TODO(dgq): verify that the host (ie, authority header) matches that of - // the LB, as opposed to that of the backends. - } else { - // TODO(dgq): verify that the host (ie, authority header) matches that of - // the backend, not the LB's. + if (c->is_lb_channel && strcmp(host, c->target) != 0) { + gpr_log(GPR_ERROR, "Authority (host) '%s' != Target '%s' for an LB call", + host, c->target); + abort(); } return true; } diff --git a/src/core/lib/surface/channel.cc b/src/core/lib/surface/channel.cc index 03353d6beb..48bc69509f 100644 --- a/src/core/lib/surface/channel.cc +++ b/src/core/lib/surface/channel.cc @@ -32,6 +32,7 @@ #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/debug/stats.h" #include "src/core/lib/gpr/string.h" +#include "src/core/lib/gprpp/memory.h" #include "src/core/lib/iomgr/iomgr.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/surface/api_trace.h" @@ -55,7 +56,6 @@ typedef struct registered_call { struct grpc_channel { int is_client; grpc_compression_options compression_options; - grpc_mdelem default_authority; gpr_atm call_size_estimate; @@ -108,40 +108,8 @@ grpc_channel* grpc_channel_create_with_builder( grpc_compression_options_init(&channel->compression_options); for (size_t i = 0; i < args->num_args; i++) { - if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) { - if (args->args[i].type != GRPC_ARG_STRING) { - gpr_log(GPR_ERROR, "%s ignored: it must be a string", - GRPC_ARG_DEFAULT_AUTHORITY); - } else { - if (!GRPC_MDISNULL(channel->default_authority)) { - /* setting this takes precedence over anything else */ - GRPC_MDELEM_UNREF(channel->default_authority); - } - channel->default_authority = grpc_mdelem_from_slices( - GRPC_MDSTR_AUTHORITY, - grpc_slice_intern( - grpc_slice_from_static_string(args->args[i].value.string))); - } - } else if (0 == - strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) { - if (args->args[i].type != GRPC_ARG_STRING) { - gpr_log(GPR_ERROR, "%s ignored: it must be a string", - GRPC_SSL_TARGET_NAME_OVERRIDE_ARG); - } else { - if (!GRPC_MDISNULL(channel->default_authority)) { - /* other ways of setting this (notably ssl) take precedence */ - gpr_log(GPR_ERROR, - "%s ignored: default host already set some other way", - GRPC_SSL_TARGET_NAME_OVERRIDE_ARG); - } else { - channel->default_authority = grpc_mdelem_from_slices( - GRPC_MDSTR_AUTHORITY, - grpc_slice_intern( - grpc_slice_from_static_string(args->args[i].value.string))); - } - } - } else if (0 == strcmp(args->args[i].key, - GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) { + if (0 == + strcmp(args->args[i].key, GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) { channel->compression_options.default_level.is_set = true; channel->compression_options.default_level.level = static_cast<grpc_compression_level>(grpc_channel_arg_get_integer( @@ -169,12 +137,49 @@ done: return channel; } +static grpc_core::UniquePtr<char> get_default_authority( + const char* target, const grpc_channel_args* input_args, + grpc_channel_stack_type channel_stack_type) { + bool has_default_authority = false; + char* ssl_override = nullptr; + grpc_core::UniquePtr<char> default_authority; + const size_t num_args = input_args != nullptr ? input_args->num_args : 0; + for (size_t i = 0; i < num_args; ++i) { + if (0 == strcmp(input_args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) { + has_default_authority = true; + } else if (0 == strcmp(input_args->args[i].key, + GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) { + ssl_override = input_args->args[i].value.string; + } + } + if (!has_default_authority && ssl_override != nullptr) { + default_authority.reset(gpr_strdup(ssl_override)); + } + return default_authority; +} + +static grpc_channel_args* build_channel_args( + const grpc_channel_args* input_args, char* default_authority) { + grpc_arg new_args[1]; + size_t num_new_args = 0; + if (default_authority != nullptr) { + new_args[num_new_args++] = grpc_channel_arg_string_create( + const_cast<char*>(GRPC_ARG_DEFAULT_AUTHORITY), default_authority); + } + return grpc_channel_args_copy_and_add(input_args, new_args, num_new_args); +} + grpc_channel* grpc_channel_create(const char* target, const grpc_channel_args* input_args, grpc_channel_stack_type channel_stack_type, grpc_transport* optional_transport) { grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create(); - grpc_channel_stack_builder_set_channel_arguments(builder, input_args); + const grpc_core::UniquePtr<char> default_authority = + get_default_authority(target, input_args, channel_stack_type); + grpc_channel_args* args = + build_channel_args(input_args, default_authority.get()); + grpc_channel_stack_builder_set_channel_arguments(builder, args); + grpc_channel_args_destroy(args); grpc_channel_stack_builder_set_target(builder, target); grpc_channel_stack_builder_set_transport(builder, optional_transport); if (!grpc_channel_init_create_stack(builder, channel_stack_type)) { @@ -246,8 +251,6 @@ static grpc_call* grpc_channel_create_call_internal( send_metadata[num_metadata++] = path_mdelem; if (!GRPC_MDISNULL(authority_mdelem)) { send_metadata[num_metadata++] = authority_mdelem; - } else if (!GRPC_MDISNULL(channel->default_authority)) { - send_metadata[num_metadata++] = GRPC_MDELEM_REF(channel->default_authority); } grpc_call_create_args args; @@ -377,7 +380,6 @@ static void destroy_channel(void* arg, grpc_error* error) { GRPC_MDELEM_UNREF(rc->authority); gpr_free(rc); } - GRPC_MDELEM_UNREF(channel->default_authority); gpr_mu_destroy(&channel->registered_call_mu); gpr_free(channel->target); gpr_free(channel); diff --git a/src/core/lib/surface/init.cc b/src/core/lib/surface/init.cc index ac9f9e6066..10c65ce09f 100644 --- a/src/core/lib/surface/init.cc +++ b/src/core/lib/surface/init.cc @@ -27,6 +27,7 @@ #include <grpc/support/log.h> #include <grpc/support/time.h> #include "src/core/lib/channel/channel_stack.h" +#include "src/core/lib/channel/client_authority_filter.h" #include "src/core/lib/channel/connected_channel.h" #include "src/core/lib/channel/handshaker_registry.h" #include "src/core/lib/debug/stats.h" @@ -83,6 +84,13 @@ static bool prepend_filter(grpc_channel_stack_builder* builder, void* arg) { } static void register_builtin_channel_init() { + grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX, + prepend_filter, + (void*)(&grpc_client_authority_filter)); + grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX, + prepend_filter, + (void*)(&grpc_client_authority_filter)); + grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, grpc_add_connected_filter, nullptr); |