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@ -41,7 +41,6 @@ |
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#include <grpc/grpc.h> |
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#include <grpc/grpc_posix.h> |
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#include <grpc/impl/channel_arg_names.h> |
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#include <grpc/passive_listener.h> |
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#include <grpc/slice_buffer.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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@ -56,8 +55,6 @@ |
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#include "src/core/lib/config/core_configuration.h" |
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#include "src/core/lib/debug/trace.h" |
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#include "src/core/lib/event_engine/channel_args_endpoint_config.h" |
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#include "src/core/lib/event_engine/extensions/supports_fd.h" |
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#include "src/core/lib/event_engine/query_extensions.h" |
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#include "src/core/lib/gprpp/debug_location.h" |
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#include "src/core/lib/gprpp/orphanable.h" |
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#include "src/core/lib/gprpp/ref_counted_ptr.h" |
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@ -67,7 +64,6 @@ |
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#include "src/core/lib/gprpp/unique_type_name.h" |
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#include "src/core/lib/iomgr/closure.h" |
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#include "src/core/lib/iomgr/endpoint.h" |
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#include "src/core/lib/iomgr/event_engine_shims/endpoint.h" |
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#include "src/core/lib/iomgr/iomgr_fwd.h" |
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#include "src/core/lib/iomgr/pollset_set.h" |
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#include "src/core/lib/iomgr/resolve_address.h" |
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@ -96,11 +92,9 @@ |
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#endif // GPR_SUPPORT_CHANNELS_FROM_FD
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namespace grpc_core { |
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namespace { |
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using grpc_event_engine::experimental::ChannelArgsEndpointConfig; |
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using grpc_event_engine::experimental::EventEngine; |
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using grpc_event_engine::experimental::EventEngineSupportsFdExtension; |
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using grpc_event_engine::experimental::QueryExtension; |
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using ::grpc_event_engine::experimental::EventEngine; |
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const char kUnixUriPrefix[] = "unix:"; |
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const char kUnixAbstractUriPrefix[] = "unix-abstract:"; |
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@ -117,23 +111,14 @@ class Chttp2ServerListener : public Server::ListenerInterface { |
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Server* server, const char* name, const ChannelArgs& args, |
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Chttp2ServerArgsModifier args_modifier); |
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static Chttp2ServerListener* CreateForPassiveListener( |
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Server* server, const ChannelArgs& args, |
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std::shared_ptr<experimental::PassiveListenerImpl> passive_listener); |
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// Do not instantiate directly. Use one of the factory methods above.
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Chttp2ServerListener(Server* server, const ChannelArgs& args, |
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Chttp2ServerArgsModifier args_modifier, |
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grpc_server_config_fetcher* config_fetcher, |
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std::shared_ptr<experimental::PassiveListenerImpl> |
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passive_listener = nullptr); |
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Chttp2ServerArgsModifier args_modifier); |
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~Chttp2ServerListener() override; |
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void Start(Server* server, |
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const std::vector<grpc_pollset*>* pollsets) override; |
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void AcceptConnectedEndpoint(std::unique_ptr<EventEngine::Endpoint> endpoint); |
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channelz::ListenSocketNode* channelz_listen_socket_node() const override { |
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return channelz_listen_socket_.get(); |
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} |
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@ -143,8 +128,6 @@ class Chttp2ServerListener : public Server::ListenerInterface { |
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void Orphan() override; |
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private: |
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friend class experimental::PassiveListenerImpl; |
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class ConfigFetcherWatcher |
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: public grpc_server_config_fetcher::WatcherInterface { |
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public: |
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@ -251,8 +234,34 @@ class Chttp2ServerListener : public Server::ListenerInterface { |
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static void DestroyListener(Server* /*server*/, void* arg, |
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grpc_closure* destroy_done); |
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Server* const server_ = nullptr; |
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grpc_tcp_server* tcp_server_ = nullptr; |
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// The interface required by RefCountedPtr<> has been manually implemented
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// here to take a ref on tcp_server_ instead. Note that, the handshaker
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// needs tcp_server_ to exist for the lifetime of the handshake since it's
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// needed by acceptor. Sharing refs between the listener and tcp_server_ is
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// just an optimization to avoid taking additional refs on the listener,
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// since TcpServerShutdownComplete already holds a ref to the listener.
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void IncrementRefCount() { grpc_tcp_server_ref(tcp_server_); } |
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void IncrementRefCount(const DebugLocation& /* location */, |
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const char* /* reason */) { |
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IncrementRefCount(); |
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} |
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GRPC_MUST_USE_RESULT RefCountedPtr<Chttp2ServerListener> Ref() { |
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IncrementRefCount(); |
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return RefCountedPtr<Chttp2ServerListener>(this); |
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} |
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GRPC_MUST_USE_RESULT RefCountedPtr<Chttp2ServerListener> Ref( |
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const DebugLocation& /* location */, const char* /* reason */) { |
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return Ref(); |
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} |
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void Unref() { grpc_tcp_server_unref(tcp_server_); } |
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void Unref(const DebugLocation& /* location */, const char* /* reason */) { |
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Unref(); |
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} |
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Server* const server_; |
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grpc_tcp_server* tcp_server_; |
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grpc_resolved_address resolved_address_; |
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Chttp2ServerArgsModifier const args_modifier_; |
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ConfigFetcherWatcher* config_fetcher_watcher_ = nullptr; |
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@ -275,10 +284,6 @@ class Chttp2ServerListener : public Server::ListenerInterface { |
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RefCountedPtr<channelz::ListenSocketNode> channelz_listen_socket_; |
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MemoryQuotaRefPtr memory_quota_; |
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ConnectionQuotaRefPtr connection_quota_; |
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grpc_server_config_fetcher* config_fetcher_ = nullptr; |
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// TODO(yashykt): consider using absl::variant<> to minimize memory usage for
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// disjoint cases where different fields are used.
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std::shared_ptr<experimental::PassiveListenerImpl> passive_listener_; |
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}; |
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//
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@ -375,17 +380,13 @@ Chttp2ServerListener::ActiveConnection::HandshakingState::HandshakingState( |
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handshake_mgr_(MakeRefCounted<HandshakeManager>()), |
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deadline_(GetConnectionDeadline(args)), |
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interested_parties_(grpc_pollset_set_create()) { |
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if (accepting_pollset != nullptr) { |
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grpc_pollset_set_add_pollset(interested_parties_, accepting_pollset_); |
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} |
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CoreConfiguration::Get().handshaker_registry().AddHandshakers( |
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HANDSHAKER_SERVER, args, interested_parties_, handshake_mgr_.get()); |
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} |
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Chttp2ServerListener::ActiveConnection::HandshakingState::~HandshakingState() { |
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if (accepting_pollset_ != nullptr) { |
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grpc_pollset_set_del_pollset(interested_parties_, accepting_pollset_); |
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} |
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grpc_pollset_set_destroy(interested_parties_); |
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gpr_free(acceptor_); |
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} |
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@ -707,18 +708,19 @@ void Chttp2ServerListener::ActiveConnection::OnDrainGraceTimeExpiry() { |
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grpc_error_handle Chttp2ServerListener::Create( |
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Server* server, grpc_resolved_address* addr, const ChannelArgs& args, |
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Chttp2ServerArgsModifier args_modifier, int* port_num) { |
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Chttp2ServerListener* listener = nullptr; |
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// The bulk of this method is inside of a lambda to make cleanup
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// easier without using goto.
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grpc_error_handle error = [&]() { |
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grpc_error_handle error; |
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// Create Chttp2ServerListener.
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OrphanablePtr<Chttp2ServerListener> listener = |
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MakeOrphanable<Chttp2ServerListener>(server, args, args_modifier, |
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server->config_fetcher()); |
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// The tcp_server will be unreffed when the listener is orphaned, which could
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// be at the end of this function if the listener was not added to the
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// server's set of listeners.
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grpc_error_handle error = grpc_tcp_server_create( |
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&listener->tcp_server_shutdown_complete_, ChannelArgsEndpointConfig(args), |
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OnAccept, listener.get(), &listener->tcp_server_); |
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listener = new Chttp2ServerListener(server, args, args_modifier); |
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error = grpc_tcp_server_create( |
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&listener->tcp_server_shutdown_complete_, |
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grpc_event_engine::experimental::ChannelArgsEndpointConfig(args), |
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OnAccept, listener, &listener->tcp_server_); |
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if (!error.ok()) return error; |
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if (listener->config_fetcher_ != nullptr) { |
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if (server->config_fetcher() != nullptr) { |
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listener->resolved_address_ = *addr; |
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// TODO(yashykt): Consider binding so as to be able to return the port
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// number.
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@ -735,54 +737,54 @@ grpc_error_handle Chttp2ServerListener::Create( |
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} |
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listener->channelz_listen_socket_ = |
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MakeRefCounted<channelz::ListenSocketNode>( |
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*string_address, absl::StrCat("chttp2 listener ", *string_address)); |
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*string_address, |
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absl::StrCat("chttp2 listener ", *string_address)); |
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} |
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// Register with the server only upon success
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server->AddListener(std::move(listener)); |
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server->AddListener(OrphanablePtr<Server::ListenerInterface>(listener)); |
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return absl::OkStatus(); |
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}(); |
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if (!error.ok()) { |
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if (listener != nullptr) { |
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if (listener->tcp_server_ != nullptr) { |
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// listener is deleted when tcp_server_ is shutdown.
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grpc_tcp_server_unref(listener->tcp_server_); |
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} else { |
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delete listener; |
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} |
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} |
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} |
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return error; |
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} |
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grpc_error_handle Chttp2ServerListener::CreateWithAcceptor( |
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Server* server, const char* name, const ChannelArgs& args, |
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Chttp2ServerArgsModifier args_modifier) { |
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auto listener = MakeOrphanable<Chttp2ServerListener>( |
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server, args, args_modifier, server->config_fetcher()); |
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Chttp2ServerListener* listener = |
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new Chttp2ServerListener(server, args, args_modifier); |
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grpc_error_handle error = grpc_tcp_server_create( |
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&listener->tcp_server_shutdown_complete_, ChannelArgsEndpointConfig(args), |
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OnAccept, listener.get(), &listener->tcp_server_); |
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if (!error.ok()) return error; |
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&listener->tcp_server_shutdown_complete_, |
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grpc_event_engine::experimental::ChannelArgsEndpointConfig(args), |
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OnAccept, listener, &listener->tcp_server_); |
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if (!error.ok()) { |
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delete listener; |
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return error; |
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} |
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// TODO(yangg) channelz
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TcpServerFdHandler** arg_val = args.GetPointer<TcpServerFdHandler*>(name); |
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*arg_val = grpc_tcp_server_create_fd_handler(listener->tcp_server_); |
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server->AddListener(std::move(listener)); |
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server->AddListener(OrphanablePtr<Server::ListenerInterface>(listener)); |
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return absl::OkStatus(); |
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} |
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Chttp2ServerListener* Chttp2ServerListener::CreateForPassiveListener( |
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Server* server, const ChannelArgs& args, |
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std::shared_ptr<experimental::PassiveListenerImpl> passive_listener) { |
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// TODO(hork): figure out how to handle channelz in this case
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auto listener = MakeOrphanable<Chttp2ServerListener>( |
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server, args, /*args_modifier=*/ |
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[](const ChannelArgs& args, grpc_error_handle*) { return args; }, nullptr, |
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std::move(passive_listener)); |
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auto listener_ptr = listener.get(); |
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server->AddListener(std::move(listener)); |
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return listener_ptr; |
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} |
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Chttp2ServerListener::Chttp2ServerListener( |
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Server* server, const ChannelArgs& args, |
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Chttp2ServerArgsModifier args_modifier, |
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grpc_server_config_fetcher* config_fetcher, |
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std::shared_ptr<experimental::PassiveListenerImpl> passive_listener) |
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Chttp2ServerArgsModifier args_modifier) |
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: server_(server), |
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args_modifier_(args_modifier), |
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args_(args), |
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memory_quota_(args.GetObject<ResourceQuota>()->memory_quota()), |
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connection_quota_(MakeRefCounted<ConnectionQuota>()), |
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config_fetcher_(config_fetcher), |
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passive_listener_(std::move(passive_listener)) { |
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connection_quota_(MakeRefCounted<ConnectionQuota>()) { |
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auto max_allowed_incoming_connections = |
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args.GetInt(GRPC_ARG_MAX_ALLOWED_INCOMING_CONNECTIONS); |
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if (max_allowed_incoming_connections.has_value()) { |
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@ -797,9 +799,6 @@ Chttp2ServerListener::~Chttp2ServerListener() { |
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// Flush queued work before destroying handshaker factory, since that
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// may do a synchronous unref.
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ExecCtx::Get()->Flush(); |
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if (passive_listener_ != nullptr) { |
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passive_listener_->ListenerDestroyed(); |
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} |
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if (on_destroy_done_ != nullptr) { |
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ExecCtx::Run(DEBUG_LOCATION, on_destroy_done_, absl::OkStatus()); |
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ExecCtx::Get()->Flush(); |
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@ -809,11 +808,10 @@ Chttp2ServerListener::~Chttp2ServerListener() { |
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// Server callback: start listening on our ports
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void Chttp2ServerListener::Start( |
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Server* /*server*/, const std::vector<grpc_pollset*>* /* pollsets */) { |
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if (config_fetcher_ != nullptr) { |
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auto watcher = std::make_unique<ConfigFetcherWatcher>( |
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RefAsSubclass<Chttp2ServerListener>()); |
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if (server_->config_fetcher() != nullptr) { |
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auto watcher = std::make_unique<ConfigFetcherWatcher>(Ref()); |
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config_fetcher_watcher_ = watcher.get(); |
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config_fetcher_->StartWatch( |
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server_->config_fetcher()->StartWatch( |
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grpc_sockaddr_to_string(&resolved_address_, false).value(), |
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std::move(watcher)); |
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} else { |
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@ -827,9 +825,7 @@ void Chttp2ServerListener::Start( |
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} |
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void Chttp2ServerListener::StartListening() { |
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if (tcp_server_ != nullptr) { |
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grpc_tcp_server_start(tcp_server_, &server_->pollsets()); |
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} |
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} |
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void Chttp2ServerListener::SetOnDestroyDone(grpc_closure* on_destroy_done) { |
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@ -837,12 +833,6 @@ void Chttp2ServerListener::SetOnDestroyDone(grpc_closure* on_destroy_done) { |
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on_destroy_done_ = on_destroy_done; |
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} |
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void Chttp2ServerListener::AcceptConnectedEndpoint( |
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std::unique_ptr<EventEngine::Endpoint> endpoint) { |
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OnAccept(this, grpc_event_engine_endpoint_create(std::move(endpoint)), |
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/*accepting_pollset=*/nullptr, /*acceptor=*/nullptr); |
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} |
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void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp, |
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grpc_pollset* accepting_pollset, |
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grpc_tcp_server_acceptor* acceptor) { |
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@ -867,7 +857,7 @@ void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp, |
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endpoint_cleanup(error); |
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return; |
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} |
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if (self->config_fetcher_ != nullptr) { |
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if (self->server_->config_fetcher() != nullptr) { |
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if (connection_manager == nullptr) { |
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grpc_error_handle error = GRPC_ERROR_CREATE( |
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"No ConnectionManager configured. Closing connection."); |
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@ -908,7 +898,7 @@ void Chttp2ServerListener::OnAccept(void* arg, grpc_endpoint* tcp, |
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// heap-use-after-free issues where `Ref()` is invoked when the ref of
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// tcp_server_ has already reached 0. (Ref() implementation of
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// Chttp2ServerListener is grpc_tcp_server_ref().)
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listener_ref = self->RefAsSubclass<Chttp2ServerListener>(); |
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listener_ref = self->Ref(); |
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self->connections_.emplace(connection.get(), std::move(connection)); |
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} |
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} |
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@ -923,7 +913,7 @@ void Chttp2ServerListener::TcpServerShutdownComplete( |
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void* arg, grpc_error_handle /*error*/) { |
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Chttp2ServerListener* self = static_cast<Chttp2ServerListener*>(arg); |
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self->channelz_listen_socket_.reset(); |
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self->Unref(); |
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delete self; |
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} |
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// Server callback: destroy the tcp listener (so we don't generate further
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@ -932,8 +922,7 @@ void Chttp2ServerListener::Orphan() { |
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// Cancel the watch before shutting down so as to avoid holding a ref to the
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// listener in the watcher.
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if (config_fetcher_watcher_ != nullptr) { |
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GPR_ASSERT(config_fetcher_ != nullptr); |
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config_fetcher_->CancelWatch(config_fetcher_watcher_); |
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server_->config_fetcher()->CancelWatch(config_fetcher_watcher_); |
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} |
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std::map<ActiveConnection*, OrphanablePtr<ActiveConnection>> connections; |
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grpc_tcp_server* tcp_server; |
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@ -951,14 +940,12 @@ void Chttp2ServerListener::Orphan() { |
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} |
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tcp_server = tcp_server_; |
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} |
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if (tcp_server != nullptr) { |
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grpc_tcp_server_shutdown_listeners(tcp_server); |
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grpc_tcp_server_unref(tcp_server); |
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} else { |
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Unref(); |
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} |
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} |
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} // namespace
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//
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// Chttp2ServerAddPort()
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//
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@ -1059,50 +1046,6 @@ ChannelArgs ModifyArgsForConnection(const ChannelArgs& args, |
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} |
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} // namespace
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namespace experimental { |
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absl::Status PassiveListenerImpl::AcceptConnectedEndpoint( |
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std::unique_ptr<EventEngine::Endpoint> endpoint) { |
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GPR_ASSERT(server_ != nullptr); |
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RefCountedPtr<Chttp2ServerListener> listener; |
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{ |
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MutexLock lock(&mu_); |
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if (listener_ != nullptr) { |
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listener = |
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listener_->RefIfNonZero().TakeAsSubclass<Chttp2ServerListener>(); |
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} |
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} |
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if (listener == nullptr) { |
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return absl::UnavailableError("passive listener already shut down"); |
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} |
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ExecCtx exec_ctx; |
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listener->AcceptConnectedEndpoint(std::move(endpoint)); |
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return absl::OkStatus(); |
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} |
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absl::Status PassiveListenerImpl::AcceptConnectedFd(int fd) { |
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GPR_ASSERT(server_ != nullptr); |
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|
ExecCtx exec_ctx; |
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|
auto& args = server_->channel_args(); |
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|
auto* supports_fd = QueryExtension<EventEngineSupportsFdExtension>( |
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|
/*engine=*/args.GetObjectRef<EventEngine>().get()); |
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|
if (supports_fd == nullptr) { |
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|
return absl::UnimplementedError( |
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|
"The server's EventEngine does not support adding endpoints from " |
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|
"connected file descriptors."); |
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|
} |
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|
auto endpoint = |
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supports_fd->CreateEndpointFromFd(fd, ChannelArgsEndpointConfig(args)); |
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|
return AcceptConnectedEndpoint(std::move(endpoint)); |
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} |
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void PassiveListenerImpl::ListenerDestroyed() { |
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|
MutexLock lock(&mu_); |
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|
listener_ = nullptr; |
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|
} |
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} // namespace experimental
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} // namespace grpc_core
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int grpc_server_add_http2_port(grpc_server* server, const char* addr, |
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@ -1200,31 +1143,3 @@ void grpc_server_add_channel_from_fd(grpc_server* /* server */, int /* fd */, |
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|
} |
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|
#endif // GPR_SUPPORT_CHANNELS_FROM_FD
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|
absl::Status grpc_server_add_passive_listener( |
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|
grpc_core::Server* server, grpc_server_credentials* credentials, |
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|
|
std::shared_ptr<grpc_core::experimental::PassiveListenerImpl> |
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|
|
passive_listener) { |
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|
|
grpc_core::ExecCtx exec_ctx; |
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|
|
GRPC_API_TRACE("grpc_server_add_passive_listener(server=%p, credentials=%p)", |
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|
|
2, (server, credentials)); |
|
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|
|
// Create security context.
|
|
|
|
|
if (credentials == nullptr) { |
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|
|
return absl::UnavailableError( |
|
|
|
|
"No credentials specified for passive listener"); |
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|
|
} |
|
|
|
|
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(); |
|
|
|
|
} |
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|
gRPC Team Bot
7 months ago
committed by
Copybara-Service