| #include "http2/adapter/nghttp2_adapter.h" |
| |
| #include "absl/algorithm/container.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/strings/string_view.h" |
| #include "http2/adapter/http2_visitor_interface.h" |
| #include "http2/adapter/nghttp2.h" |
| #include "http2/adapter/nghttp2_callbacks.h" |
| #include "http2/adapter/nghttp2_data_provider.h" |
| #include "common/platform/api/quiche_logging.h" |
| #include "common/quiche_endian.h" |
| |
| namespace http2 { |
| namespace adapter { |
| |
| namespace { |
| |
| using ConnectionError = Http2VisitorInterface::ConnectionError; |
| |
| // A metadata source that deletes itself upon completion. |
| class SelfDeletingMetadataSource : public MetadataSource { |
| public: |
| explicit SelfDeletingMetadataSource(std::unique_ptr<MetadataSource> source) |
| : source_(std::move(source)) {} |
| |
| size_t NumFrames(size_t max_frame_size) const override { |
| return source_->NumFrames(max_frame_size); |
| } |
| |
| std::pair<int64_t, bool> Pack(uint8_t* dest, size_t dest_len) override { |
| const auto result = source_->Pack(dest, dest_len); |
| if (result.first < 0 || result.second) { |
| delete this; |
| } |
| return result; |
| } |
| |
| private: |
| std::unique_ptr<MetadataSource> source_; |
| }; |
| |
| } // anonymous namespace |
| |
| /* static */ |
| std::unique_ptr<NgHttp2Adapter> NgHttp2Adapter::CreateClientAdapter( |
| Http2VisitorInterface& visitor, const nghttp2_option* options) { |
| auto adapter = new NgHttp2Adapter(visitor, Perspective::kClient, options); |
| adapter->Initialize(); |
| return absl::WrapUnique(adapter); |
| } |
| |
| /* static */ |
| std::unique_ptr<NgHttp2Adapter> NgHttp2Adapter::CreateServerAdapter( |
| Http2VisitorInterface& visitor, const nghttp2_option* options) { |
| auto adapter = new NgHttp2Adapter(visitor, Perspective::kServer, options); |
| adapter->Initialize(); |
| return absl::WrapUnique(adapter); |
| } |
| |
| bool NgHttp2Adapter::IsServerSession() const { |
| int result = nghttp2_session_check_server_session(session_->raw_ptr()); |
| QUICHE_DCHECK_EQ(perspective_ == Perspective::kServer, result > 0); |
| return result > 0; |
| } |
| |
| int64_t NgHttp2Adapter::ProcessBytes(absl::string_view bytes) { |
| const int64_t processed_bytes = session_->ProcessBytes(bytes); |
| if (processed_bytes < 0) { |
| visitor_.OnConnectionError(ConnectionError::kParseError); |
| } |
| return processed_bytes; |
| } |
| |
| void NgHttp2Adapter::SubmitSettings(absl::Span<const Http2Setting> settings) { |
| // Submit SETTINGS, converting each Http2Setting to an nghttp2_settings_entry. |
| std::vector<nghttp2_settings_entry> nghttp2_settings; |
| absl::c_transform(settings, std::back_inserter(nghttp2_settings), |
| [](const Http2Setting& setting) { |
| return nghttp2_settings_entry{setting.id, setting.value}; |
| }); |
| nghttp2_submit_settings(session_->raw_ptr(), NGHTTP2_FLAG_NONE, |
| nghttp2_settings.data(), nghttp2_settings.size()); |
| } |
| |
| void NgHttp2Adapter::SubmitPriorityForStream(Http2StreamId stream_id, |
| Http2StreamId parent_stream_id, |
| int weight, |
| bool exclusive) { |
| nghttp2_priority_spec priority_spec; |
| nghttp2_priority_spec_init(&priority_spec, parent_stream_id, weight, |
| static_cast<int>(exclusive)); |
| nghttp2_submit_priority(session_->raw_ptr(), NGHTTP2_FLAG_NONE, stream_id, |
| &priority_spec); |
| } |
| |
| void NgHttp2Adapter::SubmitPing(Http2PingId ping_id) { |
| uint8_t opaque_data[8] = {}; |
| Http2PingId ping_id_to_serialize = quiche::QuicheEndian::HostToNet64(ping_id); |
| std::memcpy(opaque_data, &ping_id_to_serialize, sizeof(Http2PingId)); |
| nghttp2_submit_ping(session_->raw_ptr(), NGHTTP2_FLAG_NONE, opaque_data); |
| } |
| |
| void NgHttp2Adapter::SubmitShutdownNotice() { |
| nghttp2_submit_shutdown_notice(session_->raw_ptr()); |
| } |
| |
| void NgHttp2Adapter::SubmitGoAway(Http2StreamId last_accepted_stream_id, |
| Http2ErrorCode error_code, |
| absl::string_view opaque_data) { |
| nghttp2_submit_goaway(session_->raw_ptr(), NGHTTP2_FLAG_NONE, |
| last_accepted_stream_id, |
| static_cast<uint32_t>(error_code), |
| ToUint8Ptr(opaque_data.data()), opaque_data.size()); |
| } |
| |
| void NgHttp2Adapter::SubmitWindowUpdate(Http2StreamId stream_id, |
| int window_increment) { |
| nghttp2_submit_window_update(session_->raw_ptr(), NGHTTP2_FLAG_NONE, |
| stream_id, window_increment); |
| } |
| |
| void NgHttp2Adapter::SubmitMetadata(Http2StreamId stream_id, |
| size_t max_frame_size, |
| std::unique_ptr<MetadataSource> source) { |
| auto* wrapped_source = new SelfDeletingMetadataSource(std::move(source)); |
| const size_t num_frames = wrapped_source->NumFrames(max_frame_size); |
| size_t num_successes = 0; |
| for (size_t i = 1; i <= num_frames; ++i) { |
| const int result = nghttp2_submit_extension( |
| session_->raw_ptr(), kMetadataFrameType, |
| i == num_frames ? kMetadataEndFlag : 0, stream_id, wrapped_source); |
| if (result != 0) { |
| QUICHE_LOG(DFATAL) << "Failed to submit extension frame " << i << " of " |
| << num_frames; |
| break; |
| } |
| ++num_successes; |
| } |
| if (num_successes == 0) { |
| delete wrapped_source; |
| } |
| } |
| |
| int NgHttp2Adapter::Send() { |
| const int result = nghttp2_session_send(session_->raw_ptr()); |
| if (result != 0) { |
| QUICHE_VLOG(1) << "nghttp2_session_send returned " << result; |
| visitor_.OnConnectionError(ConnectionError::kSendError); |
| } |
| return result; |
| } |
| |
| int NgHttp2Adapter::GetSendWindowSize() const { |
| return session_->GetRemoteWindowSize(); |
| } |
| |
| int NgHttp2Adapter::GetStreamSendWindowSize(Http2StreamId stream_id) const { |
| return nghttp2_session_get_stream_remote_window_size(session_->raw_ptr(), |
| stream_id); |
| } |
| |
| int NgHttp2Adapter::GetStreamReceiveWindowLimit(Http2StreamId stream_id) const { |
| return nghttp2_session_get_stream_effective_local_window_size( |
| session_->raw_ptr(), stream_id); |
| } |
| |
| int NgHttp2Adapter::GetStreamReceiveWindowSize(Http2StreamId stream_id) const { |
| return nghttp2_session_get_stream_local_window_size(session_->raw_ptr(), |
| stream_id); |
| } |
| |
| int NgHttp2Adapter::GetReceiveWindowSize() const { |
| return nghttp2_session_get_local_window_size(session_->raw_ptr()); |
| } |
| |
| int NgHttp2Adapter::GetHpackEncoderDynamicTableSize() const { |
| return nghttp2_session_get_hd_deflate_dynamic_table_size(session_->raw_ptr()); |
| } |
| |
| int NgHttp2Adapter::GetHpackDecoderDynamicTableSize() const { |
| return nghttp2_session_get_hd_inflate_dynamic_table_size(session_->raw_ptr()); |
| } |
| |
| Http2StreamId NgHttp2Adapter::GetHighestReceivedStreamId() const { |
| return nghttp2_session_get_last_proc_stream_id(session_->raw_ptr()); |
| } |
| |
| void NgHttp2Adapter::MarkDataConsumedForStream(Http2StreamId stream_id, |
| size_t num_bytes) { |
| int rc = session_->Consume(stream_id, num_bytes); |
| if (rc != 0) { |
| QUICHE_LOG(ERROR) << "Error " << rc << " marking " << num_bytes |
| << " bytes consumed for stream " << stream_id; |
| } |
| } |
| |
| void NgHttp2Adapter::SubmitRst(Http2StreamId stream_id, |
| Http2ErrorCode error_code) { |
| int status = |
| nghttp2_submit_rst_stream(session_->raw_ptr(), NGHTTP2_FLAG_NONE, |
| stream_id, static_cast<uint32_t>(error_code)); |
| if (status < 0) { |
| QUICHE_LOG(WARNING) << "Reset stream failed: " << stream_id |
| << " with status code " << status; |
| } |
| } |
| |
| int32_t NgHttp2Adapter::SubmitRequest( |
| absl::Span<const Header> headers, |
| std::unique_ptr<DataFrameSource> data_source, void* stream_user_data) { |
| auto nvs = GetNghttp2Nvs(headers); |
| std::unique_ptr<nghttp2_data_provider> provider = |
| MakeDataProvider(data_source.get()); |
| |
| int32_t stream_id = |
| nghttp2_submit_request(session_->raw_ptr(), nullptr, nvs.data(), |
| nvs.size(), provider.get(), stream_user_data); |
| // TODO(birenroy): clean up data source on stream close |
| sources_.emplace(stream_id, std::move(data_source)); |
| QUICHE_VLOG(1) << "Submitted request with " << nvs.size() |
| << " request headers and user data " << stream_user_data |
| << "; resulted in stream " << stream_id; |
| return stream_id; |
| } |
| |
| int NgHttp2Adapter::SubmitResponse( |
| Http2StreamId stream_id, absl::Span<const Header> headers, |
| std::unique_ptr<DataFrameSource> data_source) { |
| auto nvs = GetNghttp2Nvs(headers); |
| std::unique_ptr<nghttp2_data_provider> provider = |
| MakeDataProvider(data_source.get()); |
| |
| // TODO(birenroy): clean up data source on stream close |
| sources_.emplace(stream_id, std::move(data_source)); |
| |
| int result = nghttp2_submit_response(session_->raw_ptr(), stream_id, |
| nvs.data(), nvs.size(), provider.get()); |
| QUICHE_VLOG(1) << "Submitted response with " << nvs.size() |
| << " response headers; result = " << result; |
| return result; |
| } |
| |
| int NgHttp2Adapter::SubmitTrailer(Http2StreamId stream_id, |
| absl::Span<const Header> trailers) { |
| auto nvs = GetNghttp2Nvs(trailers); |
| int result = nghttp2_submit_trailer(session_->raw_ptr(), stream_id, |
| nvs.data(), nvs.size()); |
| QUICHE_VLOG(1) << "Submitted trailers with " << nvs.size() |
| << " response trailers; result = " << result; |
| return result; |
| } |
| |
| void NgHttp2Adapter::SetStreamUserData(Http2StreamId stream_id, |
| void* stream_user_data) { |
| nghttp2_session_set_stream_user_data(session_->raw_ptr(), stream_id, |
| stream_user_data); |
| } |
| |
| void* NgHttp2Adapter::GetStreamUserData(Http2StreamId stream_id) { |
| return nghttp2_session_get_stream_user_data(session_->raw_ptr(), stream_id); |
| } |
| |
| bool NgHttp2Adapter::ResumeStream(Http2StreamId stream_id) { |
| return 0 == nghttp2_session_resume_data(session_->raw_ptr(), stream_id); |
| } |
| |
| NgHttp2Adapter::NgHttp2Adapter(Http2VisitorInterface& visitor, |
| Perspective perspective, |
| const nghttp2_option* options) |
| : Http2Adapter(visitor), |
| visitor_(visitor), |
| options_(options), |
| perspective_(perspective) {} |
| |
| NgHttp2Adapter::~NgHttp2Adapter() {} |
| |
| void NgHttp2Adapter::Initialize() { |
| nghttp2_option* owned_options = nullptr; |
| if (options_ == nullptr) { |
| nghttp2_option_new(&owned_options); |
| // Set some common options for compatibility. |
| nghttp2_option_set_no_closed_streams(owned_options, 1); |
| nghttp2_option_set_no_auto_window_update(owned_options, 1); |
| nghttp2_option_set_max_send_header_block_length(owned_options, 0x2000000); |
| nghttp2_option_set_max_outbound_ack(owned_options, 10000); |
| nghttp2_option_set_user_recv_extension_type(owned_options, |
| kMetadataFrameType); |
| options_ = owned_options; |
| } |
| |
| session_ = absl::make_unique<NgHttp2Session>(perspective_, |
| callbacks::Create(), options_, |
| static_cast<void*>(&visitor_)); |
| if (owned_options != nullptr) { |
| nghttp2_option_del(owned_options); |
| } |
| options_ = nullptr; |
| } |
| |
| } // namespace adapter |
| } // namespace http2 |