| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/spdy/spdy_session.h" |
| |
| #include <algorithm> |
| #include <limits> |
| #include <map> |
| #include <string> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/metrics/histogram_functions.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/stl_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "base/time/time.h" |
| #include "base/trace_event/memory_usage_estimator.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/values.h" |
| #include "net/base/url_util.h" |
| #include "net/cert/asn1_util.h" |
| #include "net/cert/cert_verify_result.h" |
| #include "net/cert/ct_policy_status.h" |
| #include "net/http/http_network_session.h" |
| #include "net/http/http_server_properties.h" |
| #include "net/http/http_util.h" |
| #include "net/http/http_vary_data.h" |
| #include "net/http/transport_security_state.h" |
| #include "net/log/net_log.h" |
| #include "net/log/net_log_capture_mode.h" |
| #include "net/log/net_log_event_type.h" |
| #include "net/log/net_log_source_type.h" |
| #include "net/log/net_log_with_source.h" |
| #include "net/nqe/network_quality_estimator.h" |
| #include "net/quic/quic_http_utils.h" |
| #include "net/socket/client_socket_handle.h" |
| #include "net/socket/socket.h" |
| #include "net/socket/ssl_client_socket.h" |
| #include "net/spdy/header_coalescer.h" |
| #include "net/spdy/spdy_buffer_producer.h" |
| #include "net/spdy/spdy_http_utils.h" |
| #include "net/spdy/spdy_log_util.h" |
| #include "net/spdy/spdy_session_pool.h" |
| #include "net/spdy/spdy_stream.h" |
| #include "net/ssl/ssl_cipher_suite_names.h" |
| #include "net/ssl/ssl_connection_status_flags.h" |
| #include "net/third_party/quiche/src/quic/core/http/spdy_server_push_utils.h" |
| #include "net/third_party/quiche/src/spdy/core/spdy_frame_builder.h" |
| #include "net/third_party/quiche/src/spdy/core/spdy_protocol.h" |
| #include "url/scheme_host_port.h" |
| #include "url/url_constants.h" |
| |
| namespace net { |
| |
| namespace { |
| |
| constexpr net::NetworkTrafficAnnotationTag |
| kSpdySessionCommandsTrafficAnnotation = |
| net::DefineNetworkTrafficAnnotation("spdy_session_control", R"( |
| semantics { |
| sender: "Spdy Session" |
| description: |
| "Sends commands to control an HTTP/2 session." |
| trigger: |
| "Required control commands like initiating stream, requesting " |
| "stream reset, changing priorities, etc." |
| data: "No user data." |
| destination: OTHER |
| destination_other: |
| "Any destination the HTTP/2 session is connected to." |
| } |
| policy { |
| cookies_allowed: NO |
| setting: "This feature cannot be disabled in settings." |
| policy_exception_justification: "Essential for network access." |
| } |
| )"); |
| |
| const int kReadBufferSize = 8 * 1024; |
| const int kDefaultConnectionAtRiskOfLossSeconds = 10; |
| const int kHungIntervalSeconds = 10; |
| |
| // Lifetime of unclaimed pushed stream, in seconds: after this period, a pushed |
| // stream is cancelled if still not claimed. |
| const int kPushedStreamLifetimeSeconds = 300; |
| |
| // Default initial value for HTTP/2 SETTINGS. |
| const uint32_t kDefaultInitialHeaderTableSize = 4096; |
| const uint32_t kDefaultInitialEnablePush = 1; |
| const uint32_t kDefaultInitialInitialWindowSize = 65535; |
| const uint32_t kDefaultInitialMaxFrameSize = 16384; |
| |
| // The maximum size of header list that the server is allowed to send. |
| const uint32_t kSpdyMaxHeaderListSize = 256 * 1024; |
| |
| // Values of Vary response header on pushed streams. This is logged to |
| // Net.PushedStreamVaryResponseHeader, entries must not be changed. |
| enum PushedStreamVaryResponseHeaderValues { |
| // There is no Vary header. |
| kNoVaryHeader = 0, |
| // The value of Vary is empty. |
| kVaryIsEmpty = 1, |
| // The value of Vary is "*". |
| kVaryIsStar = 2, |
| // The value of Vary is "accept-encoding" (case insensitive). |
| kVaryIsAcceptEncoding = 3, |
| // The value of Vary contains "accept-encoding" (case insensitive) and some |
| // other field names as well. |
| kVaryHasAcceptEncoding = 4, |
| // The value of Vary does not contain "accept-encoding", is not empty, and is |
| // not "*". |
| kVaryHasNoAcceptEncoding = 5, |
| // The number of entries above. |
| kNumberOfVaryEntries = 6 |
| }; |
| |
| // String literals for parsing the Vary header in a pushed response. |
| const char kVary[] = "vary"; |
| const char kStar[] = "*"; |
| const char kAcceptEncoding[] = "accept-encoding"; |
| |
| enum PushedStreamVaryResponseHeaderValues ParseVaryInPushedResponse( |
| const spdy::SpdyHeaderBlock& headers) { |
| spdy::SpdyHeaderBlock::iterator it = headers.find(kVary); |
| if (it == headers.end()) |
| return kNoVaryHeader; |
| base::StringPiece value(it->second); |
| if (value.empty()) |
| return kVaryIsEmpty; |
| if (value == kStar) |
| return kVaryIsStar; |
| std::string lowercase_value = ToLowerASCII(value); |
| if (lowercase_value == kAcceptEncoding) |
| return kVaryIsAcceptEncoding; |
| // Both comma and newline delimiters occur in the wild. |
| for (const auto& substr : |
| SplitString(lowercase_value, ",\n", base::TRIM_WHITESPACE, |
| base::SPLIT_WANT_NONEMPTY)) { |
| if (substr == kAcceptEncoding) |
| return kVaryHasAcceptEncoding; |
| } |
| |
| return kVaryHasNoAcceptEncoding; |
| } |
| |
| // A SpdyBufferProducer implementation that creates an HTTP/2 frame by adding |
| // stream ID to greased frame parameters. |
| class GreasedBufferProducer : public SpdyBufferProducer { |
| public: |
| GreasedBufferProducer() = delete; |
| GreasedBufferProducer( |
| base::WeakPtr<SpdyStream> stream, |
| const SpdySessionPool::GreasedHttp2Frame* greased_http2_frame, |
| BufferedSpdyFramer* buffered_spdy_framer) |
| : stream_(stream), |
| greased_http2_frame_(greased_http2_frame), |
| buffered_spdy_framer_(buffered_spdy_framer) {} |
| |
| ~GreasedBufferProducer() override = default; |
| |
| std::unique_ptr<SpdyBuffer> ProduceBuffer() override { |
| const spdy::SpdyStreamId stream_id = stream_ ? stream_->stream_id() : 0; |
| spdy::SpdyUnknownIR frame(stream_id, greased_http2_frame_->type, |
| greased_http2_frame_->flags, |
| greased_http2_frame_->payload); |
| auto serialized_frame = std::make_unique<spdy::SpdySerializedFrame>( |
| buffered_spdy_framer_->SerializeFrame(frame)); |
| return std::make_unique<SpdyBuffer>(std::move(serialized_frame)); |
| } |
| |
| size_t EstimateMemoryUsage() const override { |
| return base::trace_event::EstimateMemoryUsage( |
| greased_http2_frame_->payload); |
| } |
| |
| private: |
| base::WeakPtr<SpdyStream> stream_; |
| const SpdySessionPool::GreasedHttp2Frame* const greased_http2_frame_; |
| BufferedSpdyFramer* buffered_spdy_framer_; |
| }; |
| |
| bool IsSpdySettingAtDefaultInitialValue(spdy::SpdySettingsId setting_id, |
| uint32_t value) { |
| switch (setting_id) { |
| case spdy::SETTINGS_HEADER_TABLE_SIZE: |
| return value == kDefaultInitialHeaderTableSize; |
| case spdy::SETTINGS_ENABLE_PUSH: |
| return value == kDefaultInitialEnablePush; |
| case spdy::SETTINGS_MAX_CONCURRENT_STREAMS: |
| // There is no initial limit on the number of concurrent streams. |
| return false; |
| case spdy::SETTINGS_INITIAL_WINDOW_SIZE: |
| return value == kDefaultInitialInitialWindowSize; |
| case spdy::SETTINGS_MAX_FRAME_SIZE: |
| return value == kDefaultInitialMaxFrameSize; |
| case spdy::SETTINGS_MAX_HEADER_LIST_SIZE: |
| // There is no initial limit on the size of the header list. |
| return false; |
| case spdy::SETTINGS_ENABLE_CONNECT_PROTOCOL: |
| return value == 0; |
| default: |
| // Undefined parameters have no initial value. |
| return false; |
| } |
| } |
| |
| bool IsPushEnabled(const spdy::SettingsMap& initial_settings) { |
| const auto it = initial_settings.find(spdy::SETTINGS_ENABLE_PUSH); |
| |
| // Push is enabled by default. |
| if (it == initial_settings.end()) |
| return true; |
| |
| return it->second == 1; |
| } |
| |
| base::Value NetLogSpdyHeadersSentParams(const spdy::SpdyHeaderBlock* headers, |
| bool fin, |
| spdy::SpdyStreamId stream_id, |
| bool has_priority, |
| int weight, |
| spdy::SpdyStreamId parent_stream_id, |
| bool exclusive, |
| NetLogSource source_dependency, |
| NetLogCaptureMode capture_mode) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetKey("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict.SetBoolKey("fin", fin); |
| dict.SetIntKey("stream_id", stream_id); |
| dict.SetBoolKey("has_priority", has_priority); |
| if (has_priority) { |
| dict.SetIntKey("parent_stream_id", parent_stream_id); |
| dict.SetIntKey("weight", weight); |
| dict.SetBoolKey("exclusive", exclusive); |
| } |
| if (source_dependency.IsValid()) { |
| source_dependency.AddToEventParameters(&dict); |
| } |
| return dict; |
| } |
| |
| base::Value NetLogSpdyHeadersReceivedParams( |
| const spdy::SpdyHeaderBlock* headers, |
| bool fin, |
| spdy::SpdyStreamId stream_id, |
| NetLogCaptureMode capture_mode) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetKey("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict.SetBoolKey("fin", fin); |
| dict.SetIntKey("stream_id", stream_id); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySessionCloseParams(int net_error, |
| const std::string& description) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("net_error", net_error); |
| dict.SetStringKey("description", description); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySessionParams(const HostPortProxyPair& host_pair) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetStringKey("host", host_pair.first.ToString()); |
| dict.SetStringKey("proxy", host_pair.second.ToPacString()); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyInitializedParams(NetLogSource source) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| if (source.IsValid()) { |
| source.AddToEventParameters(&dict); |
| } |
| dict.SetStringKey("protocol", NextProtoToString(kProtoHTTP2)); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySendSettingsParams(const spdy::SettingsMap* settings) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| base::ListValue settings_list; |
| for (auto it = settings->begin(); it != settings->end(); ++it) { |
| const spdy::SpdySettingsId id = it->first; |
| const uint32_t value = it->second; |
| settings_list.AppendString( |
| base::StringPrintf("[id:%u (%s) value:%u]", id, |
| spdy::SettingsIdToString(id).c_str(), value)); |
| } |
| dict.SetKey("settings", std::move(settings_list)); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyRecvSettingParams(spdy::SpdySettingsId id, |
| uint32_t value) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetStringKey( |
| "id", |
| base::StringPrintf("%u (%s)", id, spdy::SettingsIdToString(id).c_str())); |
| dict.SetIntKey("value", value); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyWindowUpdateFrameParams(spdy::SpdyStreamId stream_id, |
| uint32_t delta) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", static_cast<int>(stream_id)); |
| dict.SetIntKey("delta", delta); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySessionWindowUpdateParams(int32_t delta, |
| int32_t window_size) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("delta", delta); |
| dict.SetIntKey("window_size", window_size); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyDataParams(spdy::SpdyStreamId stream_id, |
| int size, |
| bool fin) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", static_cast<int>(stream_id)); |
| dict.SetIntKey("size", size); |
| dict.SetBoolKey("fin", fin); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyRecvRstStreamParams(spdy::SpdyStreamId stream_id, |
| spdy::SpdyErrorCode error_code) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", static_cast<int>(stream_id)); |
| dict.SetStringKey( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySendRstStreamParams(spdy::SpdyStreamId stream_id, |
| spdy::SpdyErrorCode error_code, |
| const std::string& description) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", static_cast<int>(stream_id)); |
| dict.SetStringKey( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| dict.SetStringKey("description", description); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyPingParams(spdy::SpdyPingId unique_id, |
| bool is_ack, |
| const char* type) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("unique_id", static_cast<int>(unique_id)); |
| dict.SetStringKey("type", type); |
| dict.SetBoolKey("is_ack", is_ack); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyRecvGoAwayParams(spdy::SpdyStreamId last_stream_id, |
| int active_streams, |
| int unclaimed_streams, |
| spdy::SpdyErrorCode error_code, |
| base::StringPiece debug_data, |
| NetLogCaptureMode capture_mode) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("last_accepted_stream_id", static_cast<int>(last_stream_id)); |
| dict.SetIntKey("active_streams", active_streams); |
| dict.SetIntKey("unclaimed_streams", unclaimed_streams); |
| dict.SetStringKey( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| dict.SetKey("debug_data", |
| ElideGoAwayDebugDataForNetLog(capture_mode, debug_data)); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyPushPromiseReceivedParams( |
| const spdy::SpdyHeaderBlock* headers, |
| spdy::SpdyStreamId stream_id, |
| spdy::SpdyStreamId promised_stream_id, |
| NetLogCaptureMode capture_mode) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetKey("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict.SetIntKey("id", stream_id); |
| dict.SetIntKey("promised_stream_id", promised_stream_id); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyAdoptedPushStreamParams(spdy::SpdyStreamId stream_id, |
| const GURL& url) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", stream_id); |
| dict.SetStringKey("url", url.spec()); |
| return dict; |
| } |
| |
| base::Value NetLogSpdySessionStalledParams(size_t num_active_streams, |
| size_t num_created_streams, |
| size_t num_pushed_streams, |
| size_t max_concurrent_streams, |
| const std::string& url) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("num_active_streams", num_active_streams); |
| dict.SetIntKey("num_created_streams", num_created_streams); |
| dict.SetIntKey("num_pushed_streams", num_pushed_streams); |
| dict.SetIntKey("max_concurrent_streams", max_concurrent_streams); |
| dict.SetStringKey("url", url); |
| return dict; |
| } |
| |
| base::Value NetLogSpdyPriorityParams(spdy::SpdyStreamId stream_id, |
| spdy::SpdyStreamId parent_stream_id, |
| int weight, |
| bool exclusive) { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| dict.SetIntKey("stream_id", stream_id); |
| dict.SetIntKey("parent_stream_id", parent_stream_id); |
| dict.SetIntKey("weight", weight); |
| dict.SetBoolKey("exclusive", exclusive); |
| return dict; |
| } |
| |
| // Helper function to return the total size of an array of objects |
| // with .size() member functions. |
| template <typename T, size_t N> |
| size_t GetTotalSize(const T (&arr)[N]) { |
| size_t total_size = 0; |
| for (size_t i = 0; i < N; ++i) { |
| total_size += arr[i].size(); |
| } |
| return total_size; |
| } |
| |
| // Helper class for std:find_if on STL container containing |
| // SpdyStreamRequest weak pointers. |
| class RequestEquals { |
| public: |
| explicit RequestEquals(const base::WeakPtr<SpdyStreamRequest>& request) |
| : request_(request) {} |
| |
| bool operator()(const base::WeakPtr<SpdyStreamRequest>& request) const { |
| return request_.get() == request.get(); |
| } |
| |
| private: |
| const base::WeakPtr<SpdyStreamRequest> request_; |
| }; |
| |
| // The maximum number of concurrent streams we will ever create. Even if |
| // the server permits more, we will never exceed this limit. |
| const size_t kMaxConcurrentStreamLimit = 256; |
| |
| class SpdyServerPushHelper : public ServerPushDelegate::ServerPushHelper { |
| public: |
| explicit SpdyServerPushHelper(base::WeakPtr<SpdySession> session, |
| const GURL& url) |
| : session_(session), request_url_(url) {} |
| |
| void Cancel() override { |
| if (session_) |
| session_->CancelPush(request_url_); |
| } |
| |
| const GURL& GetURL() const override { return request_url_; } |
| |
| private: |
| base::WeakPtr<SpdySession> session_; |
| const GURL request_url_; |
| }; |
| |
| } // namespace |
| |
| SpdyProtocolErrorDetails MapFramerErrorToProtocolError( |
| http2::Http2DecoderAdapter::SpdyFramerError err) { |
| switch (err) { |
| case http2::Http2DecoderAdapter::SPDY_NO_ERROR: |
| return SPDY_ERROR_NO_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_STREAM_ID: |
| return SPDY_ERROR_INVALID_STREAM_ID; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME; |
| case http2::Http2DecoderAdapter::SPDY_CONTROL_PAYLOAD_TOO_LARGE: |
| return SPDY_ERROR_CONTROL_PAYLOAD_TOO_LARGE; |
| case http2::Http2DecoderAdapter::SPDY_ZLIB_INIT_FAILURE: |
| return SPDY_ERROR_ZLIB_INIT_FAILURE; |
| case http2::Http2DecoderAdapter::SPDY_UNSUPPORTED_VERSION: |
| return SPDY_ERROR_UNSUPPORTED_VERSION; |
| case http2::Http2DecoderAdapter::SPDY_DECOMPRESS_FAILURE: |
| return SPDY_ERROR_DECOMPRESS_FAILURE; |
| case http2::Http2DecoderAdapter::SPDY_COMPRESS_FAILURE: |
| return SPDY_ERROR_COMPRESS_FAILURE; |
| case http2::Http2DecoderAdapter::SPDY_GOAWAY_FRAME_CORRUPT: |
| return SPDY_ERROR_GOAWAY_FRAME_CORRUPT; |
| case http2::Http2DecoderAdapter::SPDY_RST_STREAM_FRAME_CORRUPT: |
| return SPDY_ERROR_RST_STREAM_FRAME_CORRUPT; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_PADDING: |
| return SPDY_ERROR_INVALID_PADDING; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_DATA_FRAME_FLAGS: |
| return SPDY_ERROR_INVALID_DATA_FRAME_FLAGS; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME_FLAGS: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME_FLAGS; |
| case http2::Http2DecoderAdapter::SPDY_UNEXPECTED_FRAME: |
| return SPDY_ERROR_UNEXPECTED_FRAME; |
| case http2::Http2DecoderAdapter::SPDY_INTERNAL_FRAMER_ERROR: |
| return SPDY_ERROR_INTERNAL_FRAMER_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME_SIZE: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME_SIZE; |
| case http2::Http2DecoderAdapter::SPDY_OVERSIZED_PAYLOAD: |
| return SPDY_ERROR_OVERSIZED_PAYLOAD; |
| case http2::Http2DecoderAdapter::LAST_ERROR: |
| NOTREACHED(); |
| } |
| NOTREACHED(); |
| return static_cast<SpdyProtocolErrorDetails>(-1); |
| } |
| |
| Error MapFramerErrorToNetError( |
| http2::Http2DecoderAdapter::SpdyFramerError err) { |
| switch (err) { |
| case http2::Http2DecoderAdapter::SPDY_NO_ERROR: |
| return OK; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_CONTROL_PAYLOAD_TOO_LARGE: |
| return ERR_HTTP2_FRAME_SIZE_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_ZLIB_INIT_FAILURE: |
| return ERR_HTTP2_COMPRESSION_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_UNSUPPORTED_VERSION: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_DECOMPRESS_FAILURE: |
| return ERR_HTTP2_COMPRESSION_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_COMPRESS_FAILURE: |
| return ERR_HTTP2_COMPRESSION_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_GOAWAY_FRAME_CORRUPT: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_RST_STREAM_FRAME_CORRUPT: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_PADDING: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_DATA_FRAME_FLAGS: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME_FLAGS: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_UNEXPECTED_FRAME: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INTERNAL_FRAMER_ERROR: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_CONTROL_FRAME_SIZE: |
| return ERR_HTTP2_FRAME_SIZE_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_INVALID_STREAM_ID: |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| case http2::Http2DecoderAdapter::SPDY_OVERSIZED_PAYLOAD: |
| return ERR_HTTP2_FRAME_SIZE_ERROR; |
| case http2::Http2DecoderAdapter::LAST_ERROR: |
| NOTREACHED(); |
| } |
| NOTREACHED(); |
| return ERR_HTTP2_PROTOCOL_ERROR; |
| } |
| |
| SpdyProtocolErrorDetails MapRstStreamStatusToProtocolError( |
| spdy::SpdyErrorCode error_code) { |
| switch (error_code) { |
| case spdy::ERROR_CODE_NO_ERROR: |
| return STATUS_CODE_NO_ERROR; |
| case spdy::ERROR_CODE_PROTOCOL_ERROR: |
| return STATUS_CODE_PROTOCOL_ERROR; |
| case spdy::ERROR_CODE_INTERNAL_ERROR: |
| return STATUS_CODE_INTERNAL_ERROR; |
| case spdy::ERROR_CODE_FLOW_CONTROL_ERROR: |
| return STATUS_CODE_FLOW_CONTROL_ERROR; |
| case spdy::ERROR_CODE_SETTINGS_TIMEOUT: |
| return STATUS_CODE_SETTINGS_TIMEOUT; |
| case spdy::ERROR_CODE_STREAM_CLOSED: |
| return STATUS_CODE_STREAM_CLOSED; |
| case spdy::ERROR_CODE_FRAME_SIZE_ERROR: |
| return STATUS_CODE_FRAME_SIZE_ERROR; |
| case spdy::ERROR_CODE_REFUSED_STREAM: |
| return STATUS_CODE_REFUSED_STREAM; |
| case spdy::ERROR_CODE_CANCEL: |
| return STATUS_CODE_CANCEL; |
| case spdy::ERROR_CODE_COMPRESSION_ERROR: |
| return STATUS_CODE_COMPRESSION_ERROR; |
| case spdy::ERROR_CODE_CONNECT_ERROR: |
| return STATUS_CODE_CONNECT_ERROR; |
| case spdy::ERROR_CODE_ENHANCE_YOUR_CALM: |
| return STATUS_CODE_ENHANCE_YOUR_CALM; |
| case spdy::ERROR_CODE_INADEQUATE_SECURITY: |
| return STATUS_CODE_INADEQUATE_SECURITY; |
| case spdy::ERROR_CODE_HTTP_1_1_REQUIRED: |
| return STATUS_CODE_HTTP_1_1_REQUIRED; |
| } |
| NOTREACHED(); |
| return static_cast<SpdyProtocolErrorDetails>(-1); |
| } |
| |
| spdy::SpdyErrorCode MapNetErrorToGoAwayStatus(Error err) { |
| switch (err) { |
| case OK: |
| return spdy::ERROR_CODE_NO_ERROR; |
| case ERR_HTTP2_PROTOCOL_ERROR: |
| return spdy::ERROR_CODE_PROTOCOL_ERROR; |
| case ERR_HTTP2_FLOW_CONTROL_ERROR: |
| return spdy::ERROR_CODE_FLOW_CONTROL_ERROR; |
| case ERR_HTTP2_FRAME_SIZE_ERROR: |
| return spdy::ERROR_CODE_FRAME_SIZE_ERROR; |
| case ERR_HTTP2_COMPRESSION_ERROR: |
| return spdy::ERROR_CODE_COMPRESSION_ERROR; |
| case ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY: |
| return spdy::ERROR_CODE_INADEQUATE_SECURITY; |
| default: |
| return spdy::ERROR_CODE_PROTOCOL_ERROR; |
| } |
| } |
| |
| SpdyStreamRequest::SpdyStreamRequest() { |
| Reset(); |
| } |
| |
| SpdyStreamRequest::~SpdyStreamRequest() { |
| CancelRequest(); |
| } |
| |
| int SpdyStreamRequest::StartRequest( |
| SpdyStreamType type, |
| const base::WeakPtr<SpdySession>& session, |
| const GURL& url, |
| bool can_send_early, |
| RequestPriority priority, |
| const SocketTag& socket_tag, |
| const NetLogWithSource& net_log, |
| CompletionOnceCallback callback, |
| const NetworkTrafficAnnotationTag& traffic_annotation) { |
| DCHECK(session); |
| DCHECK(!session_); |
| DCHECK(!stream_); |
| DCHECK(callback_.is_null()); |
| DCHECK(url.is_valid()) << url.possibly_invalid_spec(); |
| |
| type_ = type; |
| session_ = session; |
| url_ = SimplifyUrlForRequest(url); |
| can_send_early_ = can_send_early; |
| priority_ = priority; |
| socket_tag_ = socket_tag; |
| net_log_ = net_log; |
| callback_ = std::move(callback); |
| traffic_annotation_ = MutableNetworkTrafficAnnotationTag(traffic_annotation); |
| |
| next_state_ = STATE_WAIT_FOR_CONFIRMATION; |
| int rv = DoLoop(OK); |
| if (rv != OK) |
| return rv; |
| |
| base::WeakPtr<SpdyStream> stream; |
| rv = session->TryCreateStream(weak_ptr_factory_.GetWeakPtr(), &stream); |
| if (rv != OK) |
| return rv; |
| |
| Reset(); |
| stream_ = stream; |
| return rv; |
| } |
| |
| void SpdyStreamRequest::CancelRequest() { |
| if (session_) |
| session_->CancelStreamRequest(weak_ptr_factory_.GetWeakPtr()); |
| Reset(); |
| // Do this to cancel any pending CompleteStreamRequest() tasks. |
| weak_ptr_factory_.InvalidateWeakPtrs(); |
| } |
| |
| base::WeakPtr<SpdyStream> SpdyStreamRequest::ReleaseStream() { |
| DCHECK(!session_); |
| base::WeakPtr<SpdyStream> stream = stream_; |
| DCHECK(stream); |
| Reset(); |
| return stream; |
| } |
| |
| size_t SpdyStreamRequest::EstimateMemoryUsage() const { |
| return base::trace_event::EstimateItemMemoryUsage(url_); |
| } |
| |
| void SpdyStreamRequest::SetPriority(RequestPriority priority) { |
| if (priority_ == priority) |
| return; |
| |
| if (stream_) |
| stream_->SetPriority(priority); |
| if (session_) |
| session_->ChangeStreamRequestPriority(weak_ptr_factory_.GetWeakPtr(), |
| priority); |
| priority_ = priority; |
| } |
| |
| void SpdyStreamRequest::OnRequestCompleteSuccess( |
| const base::WeakPtr<SpdyStream>& stream) { |
| DCHECK(session_); |
| DCHECK(!stream_); |
| DCHECK(!callback_.is_null()); |
| CompletionOnceCallback callback = std::move(callback_); |
| Reset(); |
| DCHECK(stream); |
| stream_ = stream; |
| std::move(callback).Run(OK); |
| } |
| |
| void SpdyStreamRequest::OnRequestCompleteFailure(int rv) { |
| DCHECK(session_); |
| DCHECK(!stream_); |
| DCHECK(!callback_.is_null()); |
| CompletionOnceCallback callback = std::move(callback_); |
| Reset(); |
| DCHECK_NE(rv, OK); |
| std::move(callback).Run(rv); |
| } |
| |
| void SpdyStreamRequest::Reset() { |
| type_ = SPDY_BIDIRECTIONAL_STREAM; |
| session_.reset(); |
| stream_.reset(); |
| url_ = GURL(); |
| can_send_early_ = false; |
| priority_ = MINIMUM_PRIORITY; |
| socket_tag_ = SocketTag(); |
| net_log_ = NetLogWithSource(); |
| callback_.Reset(); |
| traffic_annotation_.reset(); |
| next_state_ = STATE_NONE; |
| } |
| |
| void SpdyStreamRequest::OnIOComplete(int rv) { |
| if (rv != OK) { |
| OnRequestCompleteFailure(rv); |
| } else { |
| DoLoop(rv); |
| } |
| } |
| |
| int SpdyStreamRequest::DoLoop(int rv) { |
| do { |
| State state = next_state_; |
| next_state_ = STATE_NONE; |
| switch (state) { |
| case STATE_WAIT_FOR_CONFIRMATION: |
| CHECK_EQ(OK, rv); |
| return DoWaitForConfirmation(); |
| break; |
| case STATE_REQUEST_STREAM: |
| CHECK_EQ(OK, rv); |
| return DoRequestStream(rv); |
| break; |
| default: |
| NOTREACHED() << "next_state_: " << next_state_; |
| break; |
| } |
| } while (next_state_ != STATE_NONE && next_state_ && rv != ERR_IO_PENDING); |
| return rv; |
| } |
| |
| int SpdyStreamRequest::DoWaitForConfirmation() { |
| if (can_send_early_) { |
| next_state_ = STATE_NONE; |
| return OK; |
| } |
| |
| int rv = session_->ConfirmHandshake(base::BindOnce( |
| &SpdyStreamRequest::OnIOComplete, weak_ptr_factory_.GetWeakPtr())); |
| // If ConfirmHandshake returned synchronously, exit the state machine early |
| // so StartRequest can call TryCreateStream synchronously. Otherwise, |
| // TryCreateStream will be called asynchronously as part of the confirmation |
| // state machine. |
| next_state_ = rv == ERR_IO_PENDING ? STATE_REQUEST_STREAM : STATE_NONE; |
| return rv; |
| } |
| |
| int SpdyStreamRequest::DoRequestStream(int rv) { |
| DCHECK_NE(ERR_IO_PENDING, rv); |
| next_state_ = STATE_NONE; |
| if (rv < 0) |
| return rv; |
| |
| base::WeakPtr<SpdyStream> stream; |
| rv = session_->TryCreateStream(weak_ptr_factory_.GetWeakPtr(), &stream); |
| if (rv == OK) { |
| OnRequestCompleteSuccess(stream); |
| } else if (rv != ERR_IO_PENDING) { |
| OnRequestCompleteFailure(rv); |
| } |
| return rv; |
| } |
| |
| // static |
| bool SpdySession::CanPool(TransportSecurityState* transport_security_state, |
| const SSLInfo& ssl_info, |
| const SSLConfigService& ssl_config_service, |
| const std::string& old_hostname, |
| const std::string& new_hostname) { |
| // Pooling is prohibited if the server cert is not valid for the new domain, |
| // and for connections on which client certs were sent. It is also prohibited |
| // when channel ID was sent if the hosts are from different eTLDs+1. |
| if (IsCertStatusError(ssl_info.cert_status)) |
| return false; |
| |
| if (ssl_info.client_cert_sent && |
| !(ssl_config_service.CanShareConnectionWithClientCerts(old_hostname) && |
| ssl_config_service.CanShareConnectionWithClientCerts(new_hostname))) { |
| return false; |
| } |
| |
| if (!ssl_info.cert->VerifyNameMatch(new_hostname)) |
| return false; |
| |
| std::string pinning_failure_log; |
| // DISABLE_PIN_REPORTS is set here because this check can fail in |
| // normal operation without being indicative of a misconfiguration or |
| // attack. Port is left at 0 as it is never used. |
| if (transport_security_state->CheckPublicKeyPins( |
| HostPortPair(new_hostname, 0), ssl_info.is_issued_by_known_root, |
| ssl_info.public_key_hashes, ssl_info.unverified_cert.get(), |
| ssl_info.cert.get(), TransportSecurityState::DISABLE_PIN_REPORTS, |
| &pinning_failure_log) == |
| TransportSecurityState::PKPStatus::VIOLATED) { |
| return false; |
| } |
| |
| // As with CheckPublicKeyPins above, disable Expect-CT reports. |
| switch (transport_security_state->CheckCTRequirements( |
| HostPortPair(new_hostname, 0), ssl_info.is_issued_by_known_root, |
| ssl_info.public_key_hashes, ssl_info.cert.get(), |
| ssl_info.unverified_cert.get(), ssl_info.signed_certificate_timestamps, |
| TransportSecurityState::DISABLE_EXPECT_CT_REPORTS, |
| ssl_info.ct_policy_compliance)) { |
| case TransportSecurityState::CT_REQUIREMENTS_NOT_MET: |
| return false; |
| case TransportSecurityState::CT_REQUIREMENTS_MET: |
| case TransportSecurityState::CT_NOT_REQUIRED: |
| // Intentional fallthrough; this case is just here to make sure that all |
| // possible values of CheckCTRequirements() are handled. |
| break; |
| } |
| |
| return true; |
| } |
| |
| SpdySession::SpdySession( |
| const SpdySessionKey& spdy_session_key, |
| HttpServerProperties* http_server_properties, |
| TransportSecurityState* transport_security_state, |
| SSLConfigService* ssl_config_service, |
| const quic::ParsedQuicVersionVector& quic_supported_versions, |
| bool enable_sending_initial_data, |
| bool enable_ping_based_connection_checking, |
| bool is_http2_enabled, |
| bool is_quic_enabled, |
| bool support_ietf_format_quic_altsvc, |
| bool is_trusted_proxy, |
| size_t session_max_recv_window_size, |
| int session_max_queued_capped_frames, |
| const spdy::SettingsMap& initial_settings, |
| const base::Optional<SpdySessionPool::GreasedHttp2Frame>& |
| greased_http2_frame, |
| TimeFunc time_func, |
| ServerPushDelegate* push_delegate, |
| NetworkQualityEstimator* network_quality_estimator, |
| NetLog* net_log) |
| : in_io_loop_(false), |
| spdy_session_key_(spdy_session_key), |
| pool_(nullptr), |
| http_server_properties_(http_server_properties), |
| transport_security_state_(transport_security_state), |
| ssl_config_service_(ssl_config_service), |
| socket_(nullptr), |
| stream_hi_water_mark_(kFirstStreamId), |
| last_accepted_push_stream_id_(0), |
| push_delegate_(push_delegate), |
| num_pushed_streams_(0u), |
| num_active_pushed_streams_(0u), |
| bytes_pushed_count_(0u), |
| bytes_pushed_and_unclaimed_count_(0u), |
| in_flight_write_frame_type_(spdy::SpdyFrameType::DATA), |
| in_flight_write_frame_size_(0), |
| availability_state_(STATE_AVAILABLE), |
| read_state_(READ_STATE_DO_READ), |
| write_state_(WRITE_STATE_IDLE), |
| error_on_close_(OK), |
| initial_settings_(initial_settings), |
| greased_http2_frame_(greased_http2_frame), |
| in_confirm_handshake_(false), |
| max_concurrent_streams_(kInitialMaxConcurrentStreams), |
| max_concurrent_pushed_streams_( |
| initial_settings.at(spdy::SETTINGS_MAX_CONCURRENT_STREAMS)), |
| streams_initiated_count_(0), |
| streams_pushed_count_(0), |
| streams_pushed_and_claimed_count_(0), |
| streams_abandoned_count_(0), |
| ping_in_flight_(false), |
| next_ping_id_(1), |
| last_read_time_(time_func()), |
| last_compressed_frame_len_(0), |
| check_ping_status_pending_(false), |
| session_send_window_size_(0), |
| session_max_recv_window_size_(session_max_recv_window_size), |
| session_max_queued_capped_frames_(session_max_queued_capped_frames), |
| session_recv_window_size_(0), |
| session_unacked_recv_window_bytes_(0), |
| stream_initial_send_window_size_(kDefaultInitialWindowSize), |
| max_header_table_size_( |
| initial_settings.at(spdy::SETTINGS_HEADER_TABLE_SIZE)), |
| stream_max_recv_window_size_( |
| initial_settings.at(spdy::SETTINGS_INITIAL_WINDOW_SIZE)), |
| net_log_( |
| NetLogWithSource::Make(net_log, NetLogSourceType::HTTP2_SESSION)), |
| quic_supported_versions_(quic_supported_versions), |
| enable_sending_initial_data_(enable_sending_initial_data), |
| enable_ping_based_connection_checking_( |
| enable_ping_based_connection_checking), |
| is_http2_enabled_(is_http2_enabled), |
| is_quic_enabled_(is_quic_enabled), |
| support_ietf_format_quic_altsvc_(support_ietf_format_quic_altsvc), |
| is_trusted_proxy_(is_trusted_proxy), |
| enable_push_(IsPushEnabled(initial_settings)), |
| support_websocket_(false), |
| connection_at_risk_of_loss_time_( |
| base::TimeDelta::FromSeconds(kDefaultConnectionAtRiskOfLossSeconds)), |
| hung_interval_(base::TimeDelta::FromSeconds(kHungIntervalSeconds)), |
| time_func_(time_func), |
| network_quality_estimator_(network_quality_estimator) { |
| net_log_.BeginEvent(NetLogEventType::HTTP2_SESSION, [&] { |
| return NetLogSpdySessionParams(host_port_proxy_pair()); |
| }); |
| |
| DCHECK(base::Contains(initial_settings_, spdy::SETTINGS_HEADER_TABLE_SIZE)); |
| DCHECK( |
| base::Contains(initial_settings_, spdy::SETTINGS_MAX_CONCURRENT_STREAMS)); |
| DCHECK(base::Contains(initial_settings_, spdy::SETTINGS_INITIAL_WINDOW_SIZE)); |
| |
| if (greased_http2_frame_) { |
| // See https://tools.ietf.org/html/draft-bishop-httpbis-grease-00 |
| // for reserved frame types. |
| DCHECK_EQ(0x0b, greased_http2_frame_.value().type % 0x1f); |
| } |
| |
| // TODO(mbelshe): consider randomization of the stream_hi_water_mark. |
| } |
| |
| SpdySession::~SpdySession() { |
| CHECK(!in_io_loop_); |
| DcheckDraining(); |
| |
| DCHECK(waiting_for_confirmation_callbacks_.empty()); |
| |
| // TODO(akalin): Check connection->is_initialized(). |
| DCHECK(socket_); |
| // With SPDY we can't recycle sockets. |
| socket_->Disconnect(); |
| |
| RecordHistograms(); |
| |
| net_log_.EndEvent(NetLogEventType::HTTP2_SESSION); |
| } |
| |
| int SpdySession::GetPushedStream(const GURL& url, |
| spdy::SpdyStreamId pushed_stream_id, |
| RequestPriority priority, |
| SpdyStream** stream) { |
| CHECK(!in_io_loop_); |
| // |pushed_stream_id| must be valid. |
| DCHECK_NE(pushed_stream_id, kNoPushedStreamFound); |
| // |pushed_stream_id| must already have been claimed. |
| DCHECK_NE(pushed_stream_id, |
| pool_->push_promise_index()->FindStream(url, this)); |
| |
| if (availability_state_ == STATE_DRAINING) { |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| auto active_it = active_streams_.find(pushed_stream_id); |
| if (active_it == active_streams_.end()) { |
| // A previously claimed pushed stream might not be available, for example, |
| // if the server has reset it in the meanwhile. |
| return ERR_HTTP2_PUSHED_STREAM_NOT_AVAILABLE; |
| } |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_STREAM_ADOPTED_PUSH_STREAM, [&] { |
| return NetLogSpdyAdoptedPushStreamParams(pushed_stream_id, url); |
| }); |
| |
| *stream = active_it->second; |
| |
| DCHECK_LT(streams_pushed_and_claimed_count_, streams_pushed_count_); |
| streams_pushed_and_claimed_count_++; |
| |
| // If the stream is still open, update its priority to that of the request. |
| if (!(*stream)->IsClosed()) { |
| (*stream)->SetPriority(priority); |
| } |
| |
| return OK; |
| } |
| |
| void SpdySession::CancelPush(const GURL& url) { |
| const spdy::SpdyStreamId stream_id = |
| pool_->push_promise_index()->FindStream(url, this); |
| if (stream_id == kNoPushedStreamFound) |
| return; |
| |
| DCHECK(IsStreamActive(stream_id)); |
| RecordSpdyPushedStreamFateHistogram(SpdyPushedStreamFate::kAlreadyInCache); |
| ResetStream(stream_id, ERR_ABORTED, "Cancelled push stream."); |
| } |
| |
| void SpdySession::InitializeWithSocketHandle( |
| std::unique_ptr<ClientSocketHandle> client_socket_handle, |
| SpdySessionPool* pool) { |
| DCHECK(!client_socket_handle_); |
| DCHECK(!owned_stream_socket_); |
| DCHECK(!socket_); |
| |
| // TODO(akalin): Check connection->is_initialized() instead. This |
| // requires re-working CreateFakeSpdySession(), though. |
| DCHECK(client_socket_handle->socket()); |
| |
| client_socket_handle_ = std::move(client_socket_handle); |
| socket_ = client_socket_handle_->socket(); |
| client_socket_handle_->AddHigherLayeredPool(this); |
| |
| InitializeInternal(pool); |
| } |
| |
| void SpdySession::InitializeWithSocket( |
| std::unique_ptr<StreamSocket> stream_socket, |
| const LoadTimingInfo::ConnectTiming& connect_timing, |
| SpdySessionPool* pool) { |
| DCHECK(!client_socket_handle_); |
| DCHECK(!owned_stream_socket_); |
| DCHECK(!socket_); |
| |
| DCHECK(stream_socket); |
| |
| owned_stream_socket_ = std::move(stream_socket); |
| socket_ = owned_stream_socket_.get(); |
| connect_timing_ = |
| std::make_unique<LoadTimingInfo::ConnectTiming>(connect_timing); |
| |
| InitializeInternal(pool); |
| } |
| |
| bool SpdySession::VerifyDomainAuthentication(const std::string& domain) const { |
| if (availability_state_ == STATE_DRAINING) |
| return false; |
| |
| SSLInfo ssl_info; |
| if (!GetSSLInfo(&ssl_info)) |
| return true; // This is not a secure session, so all domains are okay. |
| |
| return CanPool(transport_security_state_, ssl_info, *ssl_config_service_, |
| host_port_pair().host(), domain); |
| } |
| |
| void SpdySession::EnqueueStreamWrite( |
| const base::WeakPtr<SpdyStream>& stream, |
| spdy::SpdyFrameType frame_type, |
| std::unique_ptr<SpdyBufferProducer> producer) { |
| DCHECK(frame_type == spdy::SpdyFrameType::HEADERS || |
| frame_type == spdy::SpdyFrameType::DATA); |
| EnqueueWrite(stream->priority(), frame_type, std::move(producer), stream, |
| stream->traffic_annotation()); |
| } |
| |
| int SpdySession::ConfirmHandshake(CompletionOnceCallback callback) { |
| int rv = ERR_IO_PENDING; |
| if (!in_confirm_handshake_) { |
| rv = socket_->ConfirmHandshake( |
| base::BindOnce(&SpdySession::NotifyRequestsOfConfirmation, |
| weak_factory_.GetWeakPtr())); |
| } |
| if (rv == ERR_IO_PENDING) { |
| in_confirm_handshake_ = true; |
| waiting_for_confirmation_callbacks_.push_back(std::move(callback)); |
| } |
| return rv; |
| } |
| |
| std::unique_ptr<spdy::SpdySerializedFrame> SpdySession::CreateHeaders( |
| spdy::SpdyStreamId stream_id, |
| RequestPriority priority, |
| spdy::SpdyControlFlags flags, |
| spdy::SpdyHeaderBlock block, |
| NetLogSource source_dependency) { |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| CHECK(it != active_streams_.end()); |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| |
| MaybeSendPrefacePing(); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| spdy::SpdyPriority spdy_priority = |
| ConvertRequestPriorityToSpdyPriority(priority); |
| |
| bool has_priority = true; |
| int weight = 0; |
| spdy::SpdyStreamId parent_stream_id = 0; |
| bool exclusive = false; |
| |
| priority_dependency_state_.OnStreamCreation( |
| stream_id, spdy_priority, &parent_stream_id, &weight, &exclusive); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_SEND_HEADERS, |
| [&](NetLogCaptureMode capture_mode) { |
| return NetLogSpdyHeadersSentParams( |
| &block, (flags & spdy::CONTROL_FLAG_FIN) != 0, |
| stream_id, has_priority, weight, parent_stream_id, |
| exclusive, source_dependency, capture_mode); |
| }); |
| } |
| |
| spdy::SpdyHeadersIR headers(stream_id, std::move(block)); |
| headers.set_has_priority(has_priority); |
| headers.set_weight(weight); |
| headers.set_parent_stream_id(parent_stream_id); |
| headers.set_exclusive(exclusive); |
| headers.set_fin((flags & spdy::CONTROL_FLAG_FIN) != 0); |
| |
| streams_initiated_count_++; |
| |
| return std::make_unique<spdy::SpdySerializedFrame>( |
| buffered_spdy_framer_->SerializeFrame(headers)); |
| } |
| |
| std::unique_ptr<SpdyBuffer> SpdySession::CreateDataBuffer( |
| spdy::SpdyStreamId stream_id, |
| IOBuffer* data, |
| int len, |
| spdy::SpdyDataFlags flags) { |
| if (availability_state_ == STATE_DRAINING) { |
| return std::unique_ptr<SpdyBuffer>(); |
| } |
| |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| CHECK(it != active_streams_.end()); |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| if (len < 0) { |
| NOTREACHED(); |
| return std::unique_ptr<SpdyBuffer>(); |
| } |
| |
| int effective_len = std::min(len, kMaxSpdyFrameChunkSize); |
| |
| bool send_stalled_by_stream = (stream->send_window_size() <= 0); |
| bool send_stalled_by_session = IsSendStalled(); |
| |
| // NOTE: There's an enum of the same name in histograms.xml. |
| enum SpdyFrameFlowControlState { |
| SEND_NOT_STALLED, |
| SEND_STALLED_BY_STREAM, |
| SEND_STALLED_BY_SESSION, |
| SEND_STALLED_BY_STREAM_AND_SESSION, |
| }; |
| |
| SpdyFrameFlowControlState frame_flow_control_state = SEND_NOT_STALLED; |
| if (send_stalled_by_stream) { |
| if (send_stalled_by_session) { |
| frame_flow_control_state = SEND_STALLED_BY_STREAM_AND_SESSION; |
| } else { |
| frame_flow_control_state = SEND_STALLED_BY_STREAM; |
| } |
| } else if (send_stalled_by_session) { |
| frame_flow_control_state = SEND_STALLED_BY_SESSION; |
| } |
| |
| UMA_HISTOGRAM_ENUMERATION("Net.SpdyFrameStreamAndSessionFlowControlState", |
| frame_flow_control_state, |
| SEND_STALLED_BY_STREAM_AND_SESSION + 1); |
| |
| // Obey send window size of the stream. |
| if (send_stalled_by_stream) { |
| stream->set_send_stalled_by_flow_control(true); |
| // Even though we're currently stalled only by the stream, we |
| // might end up being stalled by the session also. |
| QueueSendStalledStream(*stream); |
| net_log().AddEventWithIntParams( |
| NetLogEventType::HTTP2_SESSION_STREAM_STALLED_BY_STREAM_SEND_WINDOW, |
| "stream_id", stream_id); |
| return std::unique_ptr<SpdyBuffer>(); |
| } |
| |
| effective_len = std::min(effective_len, stream->send_window_size()); |
| |
| // Obey send window size of the session. |
| if (send_stalled_by_session) { |
| stream->set_send_stalled_by_flow_control(true); |
| QueueSendStalledStream(*stream); |
| net_log().AddEventWithIntParams( |
| NetLogEventType::HTTP2_SESSION_STREAM_STALLED_BY_SESSION_SEND_WINDOW, |
| "stream_id", stream_id); |
| return std::unique_ptr<SpdyBuffer>(); |
| } |
| |
| effective_len = std::min(effective_len, session_send_window_size_); |
| |
| DCHECK_GE(effective_len, 0); |
| |
| // Clear FIN flag if only some of the data will be in the data |
| // frame. |
| if (effective_len < len) |
| flags = static_cast<spdy::SpdyDataFlags>(flags & ~spdy::DATA_FLAG_FIN); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_SEND_DATA, [&] { |
| return NetLogSpdyDataParams(stream_id, effective_len, |
| (flags & spdy::DATA_FLAG_FIN) != 0); |
| }); |
| } |
| |
| // Send PrefacePing for DATA_FRAMEs with nonzero payload size. |
| if (effective_len > 0) |
| MaybeSendPrefacePing(); |
| |
| // TODO(mbelshe): reduce memory copies here. |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<spdy::SpdySerializedFrame> frame( |
| buffered_spdy_framer_->CreateDataFrame( |
| stream_id, data->data(), static_cast<uint32_t>(effective_len), |
| flags)); |
| |
| auto data_buffer = std::make_unique<SpdyBuffer>(std::move(frame)); |
| |
| // Send window size is based on payload size, so nothing to do if this is |
| // just a FIN with no payload. |
| if (effective_len != 0) { |
| DecreaseSendWindowSize(static_cast<int32_t>(effective_len)); |
| data_buffer->AddConsumeCallback(base::Bind( |
| &SpdySession::OnWriteBufferConsumed, weak_factory_.GetWeakPtr(), |
| static_cast<size_t>(effective_len))); |
| } |
| |
| return data_buffer; |
| } |
| |
| void SpdySession::UpdateStreamPriority(SpdyStream* stream, |
| RequestPriority old_priority, |
| RequestPriority new_priority) { |
| // There might be write frames enqueued for |stream| regardless of whether it |
| // is active (stream_id != 0) or inactive (no HEADERS frame has been sent out |
| // yet and stream_id == 0). |
| write_queue_.ChangePriorityOfWritesForStream(stream, old_priority, |
| new_priority); |
| |
| // PRIORITY frames only need to be sent if |stream| is active. |
| const spdy::SpdyStreamId stream_id = stream->stream_id(); |
| if (stream_id == 0) |
| return; |
| |
| DCHECK(IsStreamActive(stream_id)); |
| |
| auto updates = priority_dependency_state_.OnStreamUpdate( |
| stream_id, ConvertRequestPriorityToSpdyPriority(new_priority)); |
| for (auto u : updates) { |
| DCHECK(IsStreamActive(u.id)); |
| EnqueuePriorityFrame(u.id, u.parent_stream_id, u.weight, u.exclusive); |
| } |
| } |
| |
| void SpdySession::CloseActiveStream(spdy::SpdyStreamId stream_id, int status) { |
| DCHECK_NE(stream_id, 0u); |
| |
| auto it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| CloseActiveStreamIterator(it, status); |
| } |
| |
| void SpdySession::CloseCreatedStream(const base::WeakPtr<SpdyStream>& stream, |
| int status) { |
| DCHECK_EQ(stream->stream_id(), 0u); |
| |
| auto it = created_streams_.find(stream.get()); |
| if (it == created_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| CloseCreatedStreamIterator(it, status); |
| } |
| |
| void SpdySession::ResetStream(spdy::SpdyStreamId stream_id, |
| int error, |
| const std::string& description) { |
| DCHECK_NE(stream_id, 0u); |
| |
| auto it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| ResetStreamIterator(it, error, description); |
| } |
| |
| bool SpdySession::IsStreamActive(spdy::SpdyStreamId stream_id) const { |
| return base::Contains(active_streams_, stream_id); |
| } |
| |
| LoadState SpdySession::GetLoadState() const { |
| // Just report that we're idle since the session could be doing |
| // many things concurrently. |
| return LOAD_STATE_IDLE; |
| } |
| |
| bool SpdySession::GetRemoteEndpoint(IPEndPoint* endpoint) { |
| return GetPeerAddress(endpoint) == OK; |
| } |
| |
| bool SpdySession::GetSSLInfo(SSLInfo* ssl_info) const { |
| return socket_->GetSSLInfo(ssl_info); |
| } |
| |
| bool SpdySession::WasAlpnNegotiated() const { |
| return socket_->WasAlpnNegotiated(); |
| } |
| |
| NextProto SpdySession::GetNegotiatedProtocol() const { |
| return socket_->GetNegotiatedProtocol(); |
| } |
| |
| void SpdySession::SendStreamWindowUpdate(spdy::SpdyStreamId stream_id, |
| uint32_t delta_window_size) { |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| CHECK(it != active_streams_.end()); |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| SendWindowUpdateFrame(stream_id, delta_window_size, it->second->priority()); |
| } |
| |
| void SpdySession::CloseSessionOnError(Error err, |
| const std::string& description) { |
| DCHECK_LT(err, ERR_IO_PENDING); |
| DoDrainSession(err, description); |
| } |
| |
| void SpdySession::MakeUnavailable() { |
| if (availability_state_ == STATE_AVAILABLE) { |
| availability_state_ = STATE_GOING_AWAY; |
| pool_->MakeSessionUnavailable(GetWeakPtr()); |
| } |
| } |
| |
| void SpdySession::StartGoingAway(spdy::SpdyStreamId last_good_stream_id, |
| Error status) { |
| DCHECK_GE(availability_state_, STATE_GOING_AWAY); |
| DCHECK_NE(OK, status); |
| DCHECK_NE(ERR_IO_PENDING, status); |
| |
| // The loops below are carefully written to avoid reentrancy problems. |
| |
| while (true) { |
| size_t old_size = GetTotalSize(pending_create_stream_queues_); |
| base::WeakPtr<SpdyStreamRequest> pending_request = |
| GetNextPendingStreamRequest(); |
| if (!pending_request) |
| break; |
| // No new stream requests should be added while the session is |
| // going away. |
| DCHECK_GT(old_size, GetTotalSize(pending_create_stream_queues_)); |
| pending_request->OnRequestCompleteFailure(status); |
| } |
| |
| while (true) { |
| size_t old_size = active_streams_.size(); |
| auto it = active_streams_.lower_bound(last_good_stream_id + 1); |
| if (it == active_streams_.end()) |
| break; |
| LogAbandonedActiveStream(it, status); |
| CloseActiveStreamIterator(it, status); |
| // No new streams should be activated while the session is going |
| // away. |
| DCHECK_GT(old_size, active_streams_.size()); |
| } |
| |
| while (!created_streams_.empty()) { |
| size_t old_size = created_streams_.size(); |
| auto it = created_streams_.begin(); |
| LogAbandonedStream(*it, status); |
| CloseCreatedStreamIterator(it, status); |
| // No new streams should be created while the session is going |
| // away. |
| DCHECK_GT(old_size, created_streams_.size()); |
| } |
| |
| write_queue_.RemovePendingWritesForStreamsAfter(last_good_stream_id); |
| |
| DcheckGoingAway(); |
| MaybeFinishGoingAway(); |
| } |
| |
| void SpdySession::MaybeFinishGoingAway() { |
| if (active_streams_.empty() && created_streams_.empty() && |
| availability_state_ == STATE_GOING_AWAY) { |
| DoDrainSession(OK, "Finished going away"); |
| } |
| } |
| |
| base::Value SpdySession::GetInfoAsValue() const { |
| base::Value dict(base::Value::Type::DICTIONARY); |
| |
| dict.SetIntKey("source_id", net_log_.source().id); |
| |
| dict.SetStringKey("host_port_pair", host_port_pair().ToString()); |
| if (!pooled_aliases_.empty()) { |
| base::Value alias_list(base::Value::Type::LIST); |
| for (const auto& alias : pooled_aliases_) { |
| alias_list.Append(alias.host_port_pair().ToString()); |
| } |
| dict.SetKey("aliases", std::move(alias_list)); |
| } |
| dict.SetStringKey("proxy", host_port_proxy_pair().second.ToURI()); |
| |
| dict.SetIntKey("active_streams", active_streams_.size()); |
| |
| dict.SetIntKey("unclaimed_pushed_streams", |
| pool_->push_promise_index()->CountStreamsForSession(this)); |
| |
| dict.SetStringKey("negotiated_protocol", |
| NextProtoToString(socket_->GetNegotiatedProtocol())); |
| |
| dict.SetIntKey("error", error_on_close_); |
| dict.SetIntKey("max_concurrent_streams", max_concurrent_streams_); |
| |
| dict.SetIntKey("streams_initiated_count", streams_initiated_count_); |
| dict.SetIntKey("streams_pushed_count", streams_pushed_count_); |
| dict.SetIntKey("streams_pushed_and_claimed_count", |
| streams_pushed_and_claimed_count_); |
| dict.SetIntKey("streams_abandoned_count", streams_abandoned_count_); |
| DCHECK(buffered_spdy_framer_.get()); |
| dict.SetIntKey("frames_received", buffered_spdy_framer_->frames_received()); |
| |
| dict.SetIntKey("send_window_size", session_send_window_size_); |
| dict.SetIntKey("recv_window_size", session_recv_window_size_); |
| dict.SetIntKey("unacked_recv_window_bytes", |
| session_unacked_recv_window_bytes_); |
| return dict; |
| } |
| |
| bool SpdySession::IsReused() const { |
| if (buffered_spdy_framer_->frames_received() > 0) |
| return true; |
| |
| // If there's no socket pool in use (i.e., |owned_stream_socket_| is |
| // non-null), then the SpdySession could only have been created with freshly |
| // connected socket, since canceling the H2 session request would have |
| // destroyed the socket. |
| return owned_stream_socket_ || |
| client_socket_handle_->reuse_type() == ClientSocketHandle::UNUSED_IDLE; |
| } |
| |
| bool SpdySession::GetLoadTimingInfo(spdy::SpdyStreamId stream_id, |
| LoadTimingInfo* load_timing_info) const { |
| if (client_socket_handle_) { |
| DCHECK(!connect_timing_); |
| return client_socket_handle_->GetLoadTimingInfo(stream_id != kFirstStreamId, |
| load_timing_info); |
| } |
| |
| DCHECK(connect_timing_); |
| DCHECK(socket_); |
| |
| // The socket is considered "fresh" (not reused) only for the first stream on |
| // a SPDY session. All others consider it reused, and don't return connection |
| // establishment timing information. |
| load_timing_info->socket_reused = (stream_id != kFirstStreamId); |
| if (!load_timing_info->socket_reused) |
| load_timing_info->connect_timing = *connect_timing_; |
| |
| load_timing_info->socket_log_id = socket_->NetLog().source().id; |
| |
| return true; |
| } |
| |
| int SpdySession::GetPeerAddress(IPEndPoint* address) const { |
| if (socket_) |
| return socket_->GetPeerAddress(address); |
| |
| return ERR_SOCKET_NOT_CONNECTED; |
| } |
| |
| int SpdySession::GetLocalAddress(IPEndPoint* address) const { |
| if (socket_) |
| return socket_->GetLocalAddress(address); |
| |
| return ERR_SOCKET_NOT_CONNECTED; |
| } |
| |
| void SpdySession::AddPooledAlias(const SpdySessionKey& alias_key) { |
| pooled_aliases_.insert(alias_key); |
| } |
| |
| void SpdySession::RemovePooledAlias(const SpdySessionKey& alias_key) { |
| pooled_aliases_.erase(alias_key); |
| } |
| |
| bool SpdySession::HasAcceptableTransportSecurity() const { |
| SSLInfo ssl_info; |
| CHECK(GetSSLInfo(&ssl_info)); |
| |
| // HTTP/2 requires TLS 1.2+ |
| if (SSLConnectionStatusToVersion(ssl_info.connection_status) < |
| SSL_CONNECTION_VERSION_TLS1_2) { |
| return false; |
| } |
| |
| if (!IsTLSCipherSuiteAllowedByHTTP2( |
| SSLConnectionStatusToCipherSuite(ssl_info.connection_status))) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| base::WeakPtr<SpdySession> SpdySession::GetWeakPtr() { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| bool SpdySession::CloseOneIdleConnection() { |
| CHECK(!in_io_loop_); |
| DCHECK(pool_); |
| if (active_streams_.empty()) { |
| DoDrainSession(ERR_CONNECTION_CLOSED, "Closing idle connection."); |
| } |
| // Return false as the socket wasn't immediately closed. |
| return false; |
| } |
| |
| bool SpdySession::ValidatePushedStream(spdy::SpdyStreamId stream_id, |
| const GURL& url, |
| const HttpRequestInfo& request_info, |
| const SpdySessionKey& key) const { |
| // Proxy server and privacy mode must match. |
| if (key.proxy_server() != spdy_session_key_.proxy_server() || |
| key.privacy_mode() != spdy_session_key_.privacy_mode()) { |
| return false; |
| } |
| // Certificate must match for encrypted schemes only. |
| if (key != spdy_session_key_ && url.SchemeIsCryptographic() && |
| !VerifyDomainAuthentication(key.host_port_pair().host())) { |
| return false; |
| } |
| |
| auto stream_it = active_streams_.find(stream_id); |
| if (stream_it == active_streams_.end()) { |
| // Only active streams should be in Http2PushPromiseIndex. |
| NOTREACHED(); |
| return false; |
| } |
| const spdy::SpdyHeaderBlock& request_headers = |
| stream_it->second->request_headers(); |
| spdy::SpdyHeaderBlock::const_iterator method_it = |
| request_headers.find(spdy::kHttp2MethodHeader); |
| if (method_it == request_headers.end()) { |
| // TryCreatePushStream() would have reset the stream if it had no method. |
| NOTREACHED(); |
| return false; |
| } |
| |
| // Request method must match. |
| if (request_info.method != method_it->second) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| base::WeakPtr<SpdySession> SpdySession::GetWeakPtrToSession() { |
| return GetWeakPtr(); |
| } |
| |
| size_t SpdySession::DumpMemoryStats(StreamSocket::SocketMemoryStats* stats, |
| bool* is_session_active) const { |
| // TODO(xunjieli): Include |pending_create_stream_queues_| when WeakPtr is |
| // supported in memory_usage_estimator.h. |
| *is_session_active = is_active(); |
| socket_->DumpMemoryStats(stats); |
| |
| // |connection_| is estimated in stats->total_size. |read_buffer_| is |
| // estimated in |read_buffer_size|. TODO(xunjieli): Make them use EMU(). |
| size_t read_buffer_size = read_buffer_ ? kReadBufferSize : 0; |
| return stats->total_size + read_buffer_size + |
| base::trace_event::EstimateMemoryUsage(spdy_session_key_) + |
| base::trace_event::EstimateMemoryUsage(pooled_aliases_) + |
| base::trace_event::EstimateMemoryUsage(active_streams_) + |
| base::trace_event::EstimateMemoryUsage(created_streams_) + |
| base::trace_event::EstimateMemoryUsage(write_queue_) + |
| base::trace_event::EstimateMemoryUsage(in_flight_write_) + |
| base::trace_event::EstimateMemoryUsage(buffered_spdy_framer_) + |
| base::trace_event::EstimateMemoryUsage(initial_settings_) + |
| base::trace_event::EstimateMemoryUsage(stream_send_unstall_queue_) + |
| base::trace_event::EstimateMemoryUsage(priority_dependency_state_); |
| } |
| |
| bool SpdySession::ChangeSocketTag(const SocketTag& new_tag) { |
| if (!IsAvailable() || !socket_) |
| return false; |
| |
| // Changing the tag on the underlying socket will affect all streams, |
| // so only allow changing the tag when there are no active streams. |
| if (is_active()) |
| return false; |
| |
| socket_->ApplySocketTag(new_tag); |
| |
| SpdySessionKey new_key( |
| spdy_session_key_.host_port_pair(), spdy_session_key_.proxy_server(), |
| spdy_session_key_.privacy_mode(), spdy_session_key_.is_proxy_session(), |
| new_tag, spdy_session_key_.network_isolation_key()); |
| spdy_session_key_ = new_key; |
| |
| return true; |
| } |
| |
| // static |
| void SpdySession::RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate value) { |
| UMA_HISTOGRAM_ENUMERATION("Net.SpdyPushedStreamFate", value); |
| } |
| |
| void SpdySession::InitializeInternal(SpdySessionPool* pool) { |
| CHECK(!in_io_loop_); |
| DCHECK_EQ(availability_state_, STATE_AVAILABLE); |
| DCHECK_EQ(read_state_, READ_STATE_DO_READ); |
| DCHECK_EQ(write_state_, WRITE_STATE_IDLE); |
| |
| session_send_window_size_ = kDefaultInitialWindowSize; |
| session_recv_window_size_ = kDefaultInitialWindowSize; |
| |
| auto it = initial_settings_.find(spdy::SETTINGS_MAX_HEADER_LIST_SIZE); |
| uint32_t spdy_max_header_list_size = |
| (it == initial_settings_.end()) ? kSpdyMaxHeaderListSize : it->second; |
| buffered_spdy_framer_ = std::make_unique<BufferedSpdyFramer>( |
| spdy_max_header_list_size, net_log_, time_func_); |
| buffered_spdy_framer_->set_visitor(this); |
| buffered_spdy_framer_->set_debug_visitor(this); |
| buffered_spdy_framer_->UpdateHeaderDecoderTableSize(max_header_table_size_); |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_INITIALIZED, [&] { |
| return NetLogSpdyInitializedParams(socket_->NetLog().source()); |
| }); |
| |
| DCHECK_EQ(availability_state_, STATE_AVAILABLE); |
| if (enable_sending_initial_data_) |
| SendInitialData(); |
| pool_ = pool; |
| |
| // Bootstrap the read loop. |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ, OK)); |
| } |
| |
| // {,Try}CreateStream() can be called with |in_io_loop_| set if a stream is |
| // being created in response to another being closed due to received data. |
| |
| int SpdySession::TryCreateStream( |
| const base::WeakPtr<SpdyStreamRequest>& request, |
| base::WeakPtr<SpdyStream>* stream) { |
| DCHECK(request); |
| |
| if (availability_state_ == STATE_GOING_AWAY) |
| return ERR_FAILED; |
| |
| if (availability_state_ == STATE_DRAINING) |
| return ERR_CONNECTION_CLOSED; |
| |
| // Fail if ChangeSocketTag() has been called. |
| if (request->socket_tag_ != spdy_session_key_.socket_tag()) |
| return ERR_FAILED; |
| |
| if ((active_streams_.size() + created_streams_.size() - num_pushed_streams_ < |
| max_concurrent_streams_)) { |
| return CreateStream(*request, stream); |
| } |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_STALLED_MAX_STREAMS, [&] { |
| return NetLogSpdySessionStalledParams( |
| active_streams_.size(), created_streams_.size(), num_pushed_streams_, |
| max_concurrent_streams_, request->url().spec()); |
| }); |
| } |
| RequestPriority priority = request->priority(); |
| CHECK_GE(priority, MINIMUM_PRIORITY); |
| CHECK_LE(priority, MAXIMUM_PRIORITY); |
| pending_create_stream_queues_[priority].push_back(request); |
| return ERR_IO_PENDING; |
| } |
| |
| int SpdySession::CreateStream(const SpdyStreamRequest& request, |
| base::WeakPtr<SpdyStream>* stream) { |
| DCHECK_GE(request.priority(), MINIMUM_PRIORITY); |
| DCHECK_LE(request.priority(), MAXIMUM_PRIORITY); |
| |
| if (availability_state_ == STATE_GOING_AWAY) |
| return ERR_FAILED; |
| |
| if (availability_state_ == STATE_DRAINING) |
| return ERR_CONNECTION_CLOSED; |
| |
| DCHECK(socket_); |
| UMA_HISTOGRAM_BOOLEAN("Net.SpdySession.CreateStreamWithSocketConnected", |
| socket_->IsConnected()); |
| if (!socket_->IsConnected()) { |
| DoDrainSession( |
| ERR_CONNECTION_CLOSED, |
| "Tried to create SPDY stream for a closed socket connection."); |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| auto new_stream = std::make_unique<SpdyStream>( |
| request.type(), GetWeakPtr(), request.url(), request.priority(), |
| stream_initial_send_window_size_, stream_max_recv_window_size_, |
| request.net_log(), request.traffic_annotation()); |
| *stream = new_stream->GetWeakPtr(); |
| InsertCreatedStream(std::move(new_stream)); |
| |
| return OK; |
| } |
| |
| bool SpdySession::CancelStreamRequest( |
| const base::WeakPtr<SpdyStreamRequest>& request) { |
| DCHECK(request); |
| RequestPriority priority = request->priority(); |
| CHECK_GE(priority, MINIMUM_PRIORITY); |
| CHECK_LE(priority, MAXIMUM_PRIORITY); |
| |
| #if DCHECK_IS_ON() |
| // |request| should not be in a queue not matching its priority. |
| for (int i = MINIMUM_PRIORITY; i <= MAXIMUM_PRIORITY; ++i) { |
| if (priority == i) |
| continue; |
| PendingStreamRequestQueue* queue = &pending_create_stream_queues_[i]; |
| DCHECK(std::find_if(queue->begin(), queue->end(), RequestEquals(request)) == |
| queue->end()); |
| } |
| #endif |
| |
| PendingStreamRequestQueue* queue = &pending_create_stream_queues_[priority]; |
| // Remove |request| from |queue| while preserving the order of the |
| // other elements. |
| PendingStreamRequestQueue::iterator it = |
| std::find_if(queue->begin(), queue->end(), RequestEquals(request)); |
| // The request may already be removed if there's a |
| // CompleteStreamRequest() in flight. |
| if (it != queue->end()) { |
| it = queue->erase(it); |
| // |request| should be in the queue at most once, and if it is |
| // present, should not be pending completion. |
| DCHECK(std::find_if(it, queue->end(), RequestEquals(request)) == |
| queue->end()); |
| return true; |
| } |
| return false; |
| } |
| |
| void SpdySession::ChangeStreamRequestPriority( |
| const base::WeakPtr<SpdyStreamRequest>& request, |
| RequestPriority priority) { |
| // |request->priority()| is updated by the caller after this returns. |
| // |request| needs to still have its old priority in order for |
| // CancelStreamRequest() to find it in the correct queue. |
| DCHECK_NE(priority, request->priority()); |
| if (CancelStreamRequest(request)) { |
| pending_create_stream_queues_[priority].push_back(request); |
| } |
| } |
| |
| base::WeakPtr<SpdyStreamRequest> SpdySession::GetNextPendingStreamRequest() { |
| for (int j = MAXIMUM_PRIORITY; j >= MINIMUM_PRIORITY; --j) { |
| if (pending_create_stream_queues_[j].empty()) |
| continue; |
| |
| base::WeakPtr<SpdyStreamRequest> pending_request = |
| pending_create_stream_queues_[j].front(); |
| DCHECK(pending_request); |
| pending_create_stream_queues_[j].pop_front(); |
| return pending_request; |
| } |
| return base::WeakPtr<SpdyStreamRequest>(); |
| } |
| |
| void SpdySession::ProcessPendingStreamRequests() { |
| size_t max_requests_to_process = |
| max_concurrent_streams_ - |
| (active_streams_.size() + created_streams_.size()); |
| for (size_t i = 0; i < max_requests_to_process; ++i) { |
| base::WeakPtr<SpdyStreamRequest> pending_request = |
| GetNextPendingStreamRequest(); |
| if (!pending_request) |
| break; |
| |
| // Note that this post can race with other stream creations, and it's |
| // possible that the un-stalled stream will be stalled again if it loses. |
| // TODO(jgraettinger): Provide stronger ordering guarantees. |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, base::BindOnce(&SpdySession::CompleteStreamRequest, |
| weak_factory_.GetWeakPtr(), pending_request)); |
| } |
| } |
| |
| void SpdySession::TryCreatePushStream(spdy::SpdyStreamId stream_id, |
| spdy::SpdyStreamId associated_stream_id, |
| spdy::SpdyHeaderBlock headers) { |
| // Pushed streams are speculative, so they start at an IDLE priority. |
| // TODO(bnc): Send pushed stream cancellation with higher priority to avoid |
| // wasting bandwidth. |
| const RequestPriority request_priority = IDLE; |
| |
| if (!enable_push_) { |
| RecordSpdyPushedStreamFateHistogram(SpdyPushedStreamFate::kPushDisabled); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Push is disabled."); |
| return; |
| } |
| |
| if ((stream_id & 0x1) != 0) { |
| std::string description = base::StringPrintf( |
| "Received invalid pushed stream id %d (must be even) on stream id %d.", |
| stream_id, associated_stream_id); |
| LOG(WARNING) << description; |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kPromisedStreamIdParityError); |
| CloseSessionOnError(ERR_HTTP2_PROTOCOL_ERROR, description); |
| return; |
| } |
| |
| if ((associated_stream_id & 0x1) != 1) { |
| std::string description = base::StringPrintf( |
| "Received pushed stream id %d on invalid stream id %d (must be odd).", |
| stream_id, associated_stream_id); |
| LOG(WARNING) << description; |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kAssociatedStreamIdParityError); |
| CloseSessionOnError(ERR_HTTP2_PROTOCOL_ERROR, description); |
| return; |
| } |
| |
| if (stream_id <= last_accepted_push_stream_id_) { |
| std::string description = base::StringPrintf( |
| "Received pushed stream id %d must be larger than last accepted id %d.", |
| stream_id, last_accepted_push_stream_id_); |
| LOG(WARNING) << description; |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kStreamIdOutOfOrder); |
| CloseSessionOnError(ERR_HTTP2_PROTOCOL_ERROR, description); |
| return; |
| } |
| |
| // |last_accepted_push_stream_id_| check above guarantees that this stream has |
| // not been activated yet. |
| DCHECK(!IsStreamActive(stream_id)); |
| |
| last_accepted_push_stream_id_ = stream_id; |
| |
| if (availability_state_ == STATE_GOING_AWAY) { |
| RecordSpdyPushedStreamFateHistogram(SpdyPushedStreamFate::kGoingAway); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Push stream request received while going away."); |
| return; |
| } |
| |
| streams_pushed_count_++; |
| |
| // Verify that the response had a URL for us. |
| GURL gurl(quic::SpdyServerPushUtils::GetPromisedUrlFromHeaders(headers)); |
| if (!gurl.is_valid()) { |
| RecordSpdyPushedStreamFateHistogram(SpdyPushedStreamFate::kInvalidUrl); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Invalid pushed request headers."); |
| return; |
| } |
| |
| // GetPromisedUrlFromHeaders() guarantees that the scheme is http or https. |
| DCHECK(gurl.SchemeIs(url::kHttpScheme) || gurl.SchemeIs(url::kHttpsScheme)); |
| |
| // "Promised requests MUST be cacheable and MUST be safe [...]" (RFC7540 |
| // Section 8.2). Only cacheable safe request methods are GET and HEAD. |
| // GetPromisedUrlFromHeaders() guarantees that the method is GET or HEAD. |
| spdy::SpdyHeaderBlock::const_iterator it = |
| headers.find(spdy::kHttp2MethodHeader); |
| DCHECK(it != headers.end() && (it->second == "GET" || it->second == "HEAD")); |
| |
| // Verify we have a valid stream association. |
| auto associated_it = active_streams_.find(associated_stream_id); |
| if (associated_it == active_streams_.end()) { |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kInactiveAssociatedStream); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_STREAM_CLOSED, |
| "Inactive associated stream."); |
| return; |
| } |
| |
| // Cross-origin push validation. |
| GURL associated_url(associated_it->second->url()); |
| if (associated_url.GetOrigin() != gurl.GetOrigin()) { |
| if (is_trusted_proxy_) { |
| if (!gurl.SchemeIs(url::kHttpScheme)) { |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kNonHttpSchemeFromTrustedProxy); |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, spdy::ERROR_CODE_REFUSED_STREAM, |
| "Only http scheme allowed for cross origin push by trusted proxy."); |
| return; |
| } |
| } else { |
| if (!gurl.SchemeIs(url::kHttpsScheme)) { |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kNonHttpsPushedScheme); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Pushed URL must have https scheme."); |
| return; |
| } |
| if (!associated_url.SchemeIs(url::kHttpsScheme)) { |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kNonHttpsAssociatedScheme); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Associated URL must have https scheme."); |
| return; |
| } |
| SSLInfo ssl_info; |
| CHECK(GetSSLInfo(&ssl_info)); |
| if (!CanPool(transport_security_state_, ssl_info, *ssl_config_service_, |
| associated_url.host(), gurl.host())) { |
| RecordSpdyPushedStreamFateHistogram( |
| SpdyPushedStreamFate::kCertificateMismatch); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Certificate does not match pushed URL."); |
| return; |
| } |
| } |
| } |
| |
| // Insertion fails if there already is a pushed stream with the same path. |
| if (!pool_->push_promise_index()->RegisterUnclaimedPushedStream( |
| gurl, stream_id, this)) { |
| RecordSpdyPushedStreamFateHistogram(SpdyPushedStreamFate::kDuplicateUrl); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| spdy::ERROR_CODE_REFUSED_STREAM, |
| "Duplicate pushed stream with url: " + gurl.spec()); |
| return; |
| } |
| |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::CancelPushedStreamIfUnclaimed, GetWeakPtr(), |
| stream_id), |
| base::TimeDelta::FromSeconds(kPushedStreamLifetimeSeconds)); |
| |
| net::NetworkTrafficAnnotationTag traffic_annotation = |
| net::DefineNetworkTrafficAnnotation("spdy_push_stream", R"( |
| semantics { |
| sender: "Spdy Session" |
| description: |
| "When a web server needs to push a response to a client, an " |
| "incoming stream is created to reply the client with pushed " |
| "message instead of a message from the network." |
| trigger: |
| "A request by a server to push a response to the client." |
| data: "None." |
| destination: OTHER |
| destination_other: |
| "This stream is not used for sending data." |
| } |
| policy { |
| cookies_allowed: NO |
| setting: "This feature cannot be disabled." |
| policy_exception_justification: "Essential for navigation." |
| } |
| )"); |
| |
| auto stream = std::make_unique<SpdyStream>( |
| SPDY_PUSH_STREAM, GetWeakPtr(), gurl, request_priority, |
| stream_initial_send_window_size_, stream_max_recv_window_size_, net_log_, |
| traffic_annotation); |
| stream->set_stream_id(stream_id); |
| |
| // Convert RequestPriority to a spdy::SpdyPriority to send in a PRIORITY |
| // frame. |
| spdy::SpdyPriority spdy_priority = |
| ConvertRequestPriorityToSpdyPriority(request_priority); |
| spdy::SpdyStreamId dependency_id = 0; |
| int weight = 0; |
| bool exclusive = false; |
| priority_dependency_state_.OnStreamCreation( |
| stream_id, spdy_priority, &dependency_id, &weight, &exclusive); |
| EnqueuePriorityFrame(stream_id, dependency_id, weight, exclusive); |
| |
| // PUSH_PROMISE arrives on associated stream. |
| associated_it->second->AddRawReceivedBytes(last_compressed_frame_len_); |
| last_compressed_frame_len_ = 0; |
| |
| InsertActivatedStream(std::move(stream)); |
| |
| auto active_it = active_streams_.find(stream_id); |
| DCHECK(active_it != active_streams_.end()); |
| |
| // Notify the push_delegate that a push promise has been received. |
| if (push_delegate_) { |
| push_delegate_->OnPush(std::make_unique<SpdyServerPushHelper>( |
| weak_factory_.GetWeakPtr(), gurl), |
| net_log_); |
| } |
| |
| active_it->second->OnPushPromiseHeadersReceived(std::move(headers), |
| std::move(gurl)); |
| DCHECK(active_it->second->IsReservedRemote()); |
| num_pushed_streams_++; |
| return; |
| } |
| |
| void SpdySession::CloseActiveStreamIterator(ActiveStreamMap::iterator it, |
| int status) { |
| // TODO(mbelshe): We should send a RST_STREAM control frame here |
| // so that the server can cancel a large send. |
| |
| std::unique_ptr<SpdyStream> owned_stream(it->second); |
| active_streams_.erase(it); |
| priority_dependency_state_.OnStreamDestruction(owned_stream->stream_id()); |
| |
| // TODO(akalin): When SpdyStream was ref-counted (and |
| // |unclaimed_pushed_streams_| held scoped_refptr<SpdyStream>), this |
| // was only done when status was not OK. This meant that pushed |
| // streams can still be claimed after they're closed. This is |
| // probably something that we still want to support, although server |
| // push is hardly used. Write tests for this and fix this. (See |
| // http://crbug.com/261712 .) |
| if (owned_stream->type() == SPDY_PUSH_STREAM) { |
| if (pool_->push_promise_index()->UnregisterUnclaimedPushedStream( |
| owned_stream->url(), owned_stream->stream_id(), this)) { |
| bytes_pushed_and_unclaimed_count_ += owned_stream->recv_bytes(); |
| } |
| bytes_pushed_count_ += owned_stream->recv_bytes(); |
| num_pushed_streams_--; |
| if (!owned_stream->IsReservedRemote()) |
| num_active_pushed_streams_--; |
| } |
| |
| DeleteStream(std::move(owned_stream), status); |
| |
| // If the socket belongs to a socket pool, and there are no active streams, |
| // and the socket pool is stalled, then close the session to free up a socket |
| // slot. |
| if (client_socket_handle_ && active_streams_.empty() && |
| created_streams_.empty() && client_socket_handle_->IsPoolStalled()) { |
| DoDrainSession(ERR_CONNECTION_CLOSED, "Closing idle connection."); |
| } |
| } |
| |
| void SpdySession::CloseCreatedStreamIterator(CreatedStreamSet::iterator it, |
| int status) { |
| std::unique_ptr<SpdyStream> owned_stream(*it); |
| created_streams_.erase(it); |
| DeleteStream(std::move(owned_stream), status); |
| } |
| |
| void SpdySession::ResetStreamIterator(ActiveStreamMap::iterator it, |
| int error, |
| const std::string& description) { |
| // Send the RST_STREAM frame first as CloseActiveStreamIterator() |
| // may close us. |
| spdy::SpdyErrorCode error_code = spdy::ERROR_CODE_PROTOCOL_ERROR; |
| if (error == ERR_FAILED) { |
| error_code = spdy::ERROR_CODE_INTERNAL_ERROR; |
| } else if (error == ERR_ABORTED || |
| error == ERR_HTTP2_PUSHED_RESPONSE_DOES_NOT_MATCH) { |
| error_code = spdy::ERROR_CODE_CANCEL; |
| } else if (error == ERR_HTTP2_FLOW_CONTROL_ERROR) { |
| error_code = spdy::ERROR_CODE_FLOW_CONTROL_ERROR; |
| } else if (error == ERR_TIMED_OUT || |
| error == ERR_HTTP2_CLIENT_REFUSED_STREAM) { |
| error_code = spdy::ERROR_CODE_REFUSED_STREAM; |
| } else if (error == ERR_HTTP2_STREAM_CLOSED) { |
| error_code = spdy::ERROR_CODE_STREAM_CLOSED; |
| } |
| spdy::SpdyStreamId stream_id = it->first; |
| RequestPriority priority = it->second->priority(); |
| EnqueueResetStreamFrame(stream_id, priority, error_code, description); |
| |
| // Removes any pending writes for the stream except for possibly an |
| // in-flight one. |
| CloseActiveStreamIterator(it, error); |
| } |
| |
| void SpdySession::EnqueueResetStreamFrame(spdy::SpdyStreamId stream_id, |
| RequestPriority priority, |
| spdy::SpdyErrorCode error_code, |
| const std::string& description) { |
| DCHECK_NE(stream_id, 0u); |
| |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_SEND_RST_STREAM, [&] { |
| return NetLogSpdySendRstStreamParams(stream_id, error_code, description); |
| }); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<spdy::SpdySerializedFrame> rst_frame( |
| buffered_spdy_framer_->CreateRstStream(stream_id, error_code)); |
| |
| EnqueueSessionWrite(priority, spdy::SpdyFrameType::RST_STREAM, |
| std::move(rst_frame)); |
| RecordProtocolErrorHistogram(MapRstStreamStatusToProtocolError(error_code)); |
| } |
| |
| void SpdySession::EnqueuePriorityFrame(spdy::SpdyStreamId stream_id, |
| spdy::SpdyStreamId dependency_id, |
| int weight, |
| bool exclusive) { |
| net_log().AddEvent(NetLogEventType::HTTP2_STREAM_SEND_PRIORITY, [&] { |
| return NetLogSpdyPriorityParams(stream_id, dependency_id, weight, |
| exclusive); |
| }); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<spdy::SpdySerializedFrame> frame( |
| buffered_spdy_framer_->CreatePriority(stream_id, dependency_id, weight, |
| exclusive)); |
| |
| // PRIORITY frames describe sequenced updates to the tree, so they must |
| // be serialized. We do this by queueing all PRIORITY frames at HIGHEST |
| // priority. |
| EnqueueWrite(HIGHEST, spdy::SpdyFrameType::PRIORITY, |
| std::make_unique<SimpleBufferProducer>( |
| std::make_unique<SpdyBuffer>(std::move(frame))), |
| base::WeakPtr<SpdyStream>(), |
| kSpdySessionCommandsTrafficAnnotation); |
| } |
| |
| void SpdySession::PumpReadLoop(ReadState expected_read_state, int result) { |
| CHECK(!in_io_loop_); |
| if (availability_state_ == STATE_DRAINING) { |
| return; |
| } |
| ignore_result(DoReadLoop(expected_read_state, result)); |
| } |
| |
| int SpdySession::DoReadLoop(ReadState expected_read_state, int result) { |
| CHECK(!in_io_loop_); |
| CHECK_EQ(read_state_, expected_read_state); |
| |
| in_io_loop_ = true; |
| |
| int bytes_read_without_yielding = 0; |
| const base::TimeTicks yield_after_time = |
| time_func_() + |
| base::TimeDelta::FromMilliseconds(kYieldAfterDurationMilliseconds); |
| |
| // Loop until the session is draining, the read becomes blocked, or |
| // the read limit is exceeded. |
| while (true) { |
| switch (read_state_) { |
| case READ_STATE_DO_READ: |
| CHECK_EQ(result, OK); |
| result = DoRead(); |
| break; |
| case READ_STATE_DO_READ_COMPLETE: |
| if (result > 0) |
| bytes_read_without_yielding += result; |
| result = DoReadComplete(result); |
| break; |
| default: |
| NOTREACHED() << "read_state_: " << read_state_; |
| break; |
| } |
| |
| if (availability_state_ == STATE_DRAINING) |
| break; |
| |
| if (result == ERR_IO_PENDING) |
| break; |
| |
| if (read_state_ == READ_STATE_DO_READ && |
| (bytes_read_without_yielding > kYieldAfterBytesRead || |
| time_func_() > yield_after_time)) { |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ, OK)); |
| result = ERR_IO_PENDING; |
| break; |
| } |
| } |
| |
| CHECK(in_io_loop_); |
| in_io_loop_ = false; |
| |
| return result; |
| } |
| |
| int SpdySession::DoRead() { |
| DCHECK(!read_buffer_); |
| CHECK(in_io_loop_); |
| |
| CHECK(socket_); |
| read_state_ = READ_STATE_DO_READ_COMPLETE; |
| read_buffer_ = base::MakeRefCounted<IOBuffer>(kReadBufferSize); |
| int rv = socket_->ReadIfReady( |
| read_buffer_.get(), kReadBufferSize, |
| base::BindOnce(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ)); |
| if (rv == ERR_IO_PENDING) { |
| read_buffer_ = nullptr; |
| read_state_ = READ_STATE_DO_READ; |
| return rv; |
| } |
| if (rv == ERR_READ_IF_READY_NOT_IMPLEMENTED) { |
| // Fallback to regular Read(). |
| return socket_->Read( |
| read_buffer_.get(), kReadBufferSize, |
| base::BindOnce(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ_COMPLETE)); |
| } |
| return rv; |
| } |
| |
| int SpdySession::DoReadComplete(int result) { |
| DCHECK(read_buffer_); |
| CHECK(in_io_loop_); |
| |
| // Parse a frame. For now this code requires that the frame fit into our |
| // buffer (kReadBufferSize). |
| // TODO(mbelshe): support arbitrarily large frames! |
| |
| if (result == 0) { |
| DoDrainSession(ERR_CONNECTION_CLOSED, "Connection closed"); |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| if (result < 0) { |
| DoDrainSession( |
| static_cast<Error>(result), |
| base::StringPrintf("Error %d reading from socket.", -result)); |
| return result; |
| } |
| CHECK_LE(result, kReadBufferSize); |
| |
| last_read_time_ = time_func_(); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| char* data = read_buffer_->data(); |
| while (result > 0) { |
| uint32_t bytes_processed = |
| buffered_spdy_framer_->ProcessInput(data, result); |
| result -= bytes_processed; |
| data += bytes_processed; |
| |
| if (availability_state_ == STATE_DRAINING) { |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| DCHECK_EQ(buffered_spdy_framer_->spdy_framer_error(), |
| http2::Http2DecoderAdapter::SPDY_NO_ERROR); |
| } |
| |
| read_buffer_ = nullptr; |
| read_state_ = READ_STATE_DO_READ; |
| return OK; |
| } |
| |
| void SpdySession::PumpWriteLoop(WriteState expected_write_state, int result) { |
| CHECK(!in_io_loop_); |
| DCHECK_EQ(write_state_, expected_write_state); |
| |
| DoWriteLoop(expected_write_state, result); |
| |
| if (availability_state_ == STATE_DRAINING && !in_flight_write_ && |
| write_queue_.IsEmpty()) { |
| pool_->RemoveUnavailableSession(GetWeakPtr()); // Destroys |this|. |
| return; |
| } |
| } |
| |
| void SpdySession::MaybePostWriteLoop() { |
| if (write_state_ == WRITE_STATE_IDLE) { |
| CHECK(!in_flight_write_); |
| write_state_ = WRITE_STATE_DO_WRITE; |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::PumpWriteLoop, weak_factory_.GetWeakPtr(), |
| WRITE_STATE_DO_WRITE, OK)); |
| } |
| } |
| |
| int SpdySession::DoWriteLoop(WriteState expected_write_state, int result) { |
| CHECK(!in_io_loop_); |
| DCHECK_NE(write_state_, WRITE_STATE_IDLE); |
| DCHECK_EQ(write_state_, expected_write_state); |
| |
| in_io_loop_ = true; |
| |
| // Loop until the session is closed or the write becomes blocked. |
| while (true) { |
| switch (write_state_) { |
| case WRITE_STATE_DO_WRITE: |
| DCHECK_EQ(result, OK); |
| result = DoWrite(); |
| break; |
| case WRITE_STATE_DO_WRITE_COMPLETE: |
| result = DoWriteComplete(result); |
| break; |
| case WRITE_STATE_IDLE: |
| default: |
| NOTREACHED() << "write_state_: " << write_state_; |
| break; |
| } |
| |
| if (write_state_ == WRITE_STATE_IDLE) { |
| DCHECK_EQ(result, ERR_IO_PENDING); |
| break; |
| } |
| |
| if (result == ERR_IO_PENDING) |
| break; |
| } |
| |
| CHECK(in_io_loop_); |
| in_io_loop_ = false; |
| |
| return result; |
| } |
| |
| int SpdySession::DoWrite() { |
| CHECK(in_io_loop_); |
| |
| DCHECK(buffered_spdy_framer_); |
| if (in_flight_write_) { |
| DCHECK_GT(in_flight_write_->GetRemainingSize(), 0u); |
| } else { |
| // Grab the next frame to send. |
| spdy::SpdyFrameType frame_type = spdy::SpdyFrameType::DATA; |
| std::unique_ptr<SpdyBufferProducer> producer; |
| base::WeakPtr<SpdyStream> stream; |
| if (!write_queue_.Dequeue(&frame_type, &producer, &stream, |
| &in_flight_write_traffic_annotation)) { |
| write_state_ = WRITE_STATE_IDLE; |
| return ERR_IO_PENDING; |
| } |
| |
| if (stream.get()) |
| CHECK(!stream->IsClosed()); |
| |
| // Activate the stream only when sending the HEADERS frame to |
| // guarantee monotonically-increasing stream IDs. |
| if (frame_type == spdy::SpdyFrameType::HEADERS) { |
| CHECK(stream.get()); |
| CHECK_EQ(stream->stream_id(), 0u); |
| std::unique_ptr<SpdyStream> owned_stream = |
| ActivateCreatedStream(stream.get()); |
| InsertActivatedStream(std::move(owned_stream)); |
| |
| if (stream_hi_water_mark_ > kLastStreamId) { |
| CHECK_EQ(stream->stream_id(), kLastStreamId); |
| // We've exhausted the stream ID space, and no new streams may be |
| // created after this one. |
| MakeUnavailable(); |
| StartGoingAway(kLastStreamId, ERR_ABORTED); |
| } |
| } |
| |
| in_flight_write_ = producer->ProduceBuffer(); |
| if (!in_flight_write_) { |
| NOTREACHED(); |
| return ERR_UNEXPECTED; |
| } |
| in_flight_write_frame_type_ = frame_type; |
| in_flight_write_frame_size_ = in_flight_write_->GetRemainingSize(); |
| DCHECK_GE(in_flight_write_frame_size_, spdy::kFrameMinimumSize); |
| in_flight_write_stream_ = stream; |
| } |
| |
| write_state_ = WRITE_STATE_DO_WRITE_COMPLETE; |
| |
| scoped_refptr<IOBuffer> write_io_buffer = |
| in_flight_write_->GetIOBufferForRemainingData(); |
| return socket_->Write( |
| write_io_buffer.get(), in_flight_write_->GetRemainingSize(), |
| base::BindOnce(&SpdySession::PumpWriteLoop, weak_factory_.GetWeakPtr(), |
| WRITE_STATE_DO_WRITE_COMPLETE), |
| NetworkTrafficAnnotationTag(in_flight_write_traffic_annotation)); |
| } |
| |
| int SpdySession::DoWriteComplete(int result) { |
| CHECK(in_io_loop_); |
| DCHECK_NE(result, ERR_IO_PENDING); |
| DCHECK_GT(in_flight_write_->GetRemainingSize(), 0u); |
| |
| if (result < 0) { |
| DCHECK_NE(result, ERR_IO_PENDING); |
| in_flight_write_.reset(); |
| in_flight_write_frame_type_ = spdy::SpdyFrameType::DATA; |
| in_flight_write_frame_size_ = 0; |
| in_flight_write_stream_.reset(); |
| in_flight_write_traffic_annotation.reset(); |
| write_state_ = WRITE_STATE_DO_WRITE; |
| DoDrainSession(static_cast<Error>(result), "Write error"); |
| return OK; |
| } |
| |
| // It should not be possible to have written more bytes than our |
| // in_flight_write_. |
| DCHECK_LE(static_cast<size_t>(result), in_flight_write_->GetRemainingSize()); |
| |
| if (result > 0) { |
| in_flight_write_->Consume(static_cast<size_t>(result)); |
| if (in_flight_write_stream_.get()) |
| in_flight_write_stream_->AddRawSentBytes(static_cast<size_t>(result)); |
| |
| // We only notify the stream when we've fully written the pending frame. |
| if (in_flight_write_->GetRemainingSize() == 0) { |
| // It is possible that the stream was cancelled while we were |
| // writing to the socket. |
| if (in_flight_write_stream_.get()) { |
| DCHECK_GT(in_flight_write_frame_size_, 0u); |
| in_flight_write_stream_->OnFrameWriteComplete( |
| in_flight_write_frame_type_, in_flight_write_frame_size_); |
| } |
| |
| // Cleanup the write which just completed. |
| in_flight_write_.reset(); |
| in_flight_write_frame_type_ = spdy::SpdyFrameType::DATA; |
| in_flight_write_frame_size_ = 0; |
| in_flight_write_stream_.reset(); |
| } |
| } |
| |
| write_state_ = WRITE_STATE_DO_WRITE; |
| return OK; |
| } |
| |
| void SpdySession::NotifyRequestsOfConfirmation(int rv) { |
| for (auto& callback : waiting_for_confirmation_callbacks_) { |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, base::BindOnce(std::move(callback), rv)); |
| } |
| waiting_for_confirmation_callbacks_.clear(); |
| in_confirm_handshake_ = false; |
| } |
| |
| void SpdySession::SendInitialData() { |
| DCHECK(enable_sending_initial_data_); |
| DCHECK(buffered_spdy_framer_.get()); |
| |
| // Prepare initial SETTINGS frame. Only send settings that have a value |
| // different from the protocol default value. |
| spdy::SettingsMap settings_map; |
| for (auto setting : initial_settings_) { |
| if (!IsSpdySettingAtDefaultInitialValue(setting.first, setting.second)) { |
| settings_map.insert(setting); |
| } |
| } |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_SEND_SETTINGS, [&] { |
| return NetLogSpdySendSettingsParams(&settings_map); |
| }); |
| std::unique_ptr<spdy::SpdySerializedFrame> settings_frame( |
| buffered_spdy_framer_->CreateSettings(settings_map)); |
| |
| // Prepare initial WINDOW_UPDATE frame. |
| // Make sure |session_max_recv_window_size_ - session_recv_window_size_| |
| // does not underflow. |
| DCHECK_GE(session_max_recv_window_size_, session_recv_window_size_); |
| DCHECK_GE(session_recv_window_size_, 0); |
| DCHECK_EQ(0, session_unacked_recv_window_bytes_); |
| std::unique_ptr<spdy::SpdySerializedFrame> window_update_frame; |
| const bool send_window_update = |
| session_max_recv_window_size_ > session_recv_window_size_; |
| if (send_window_update) { |
| const int32_t delta_window_size = |
| session_max_recv_window_size_ - session_recv_window_size_; |
| session_recv_window_size_ += delta_window_size; |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_UPDATE_RECV_WINDOW, [&] { |
| return NetLogSpdySessionWindowUpdateParams(delta_window_size, |
| session_recv_window_size_); |
| }); |
| |
| session_unacked_recv_window_bytes_ += delta_window_size; |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_SEND_WINDOW_UPDATE, [&] { |
| return NetLogSpdyWindowUpdateFrameParams( |
| spdy::kSessionFlowControlStreamId, |
| session_unacked_recv_window_bytes_); |
| }); |
| window_update_frame = buffered_spdy_framer_->CreateWindowUpdate( |
| spdy::kSessionFlowControlStreamId, session_unacked_recv_window_bytes_); |
| session_unacked_recv_window_bytes_ = 0; |
| } |
| |
| // Create a single frame to hold connection prefix, initial SETTINGS frame, |
| // and optional initial WINDOW_UPDATE frame, so that they are sent on the wire |
| // in a single packet. |
| size_t initial_frame_size = |
| spdy::kHttp2ConnectionHeaderPrefixSize + settings_frame->size(); |
| if (send_window_update) |
| initial_frame_size += window_update_frame->size(); |
| auto initial_frame_data = std::make_unique<char[]>(initial_frame_size); |
| size_t offset = 0; |
| |
| memcpy(initial_frame_data.get() + offset, spdy::kHttp2ConnectionHeaderPrefix, |
| spdy::kHttp2ConnectionHeaderPrefixSize); |
| offset += spdy::kHttp2ConnectionHeaderPrefixSize; |
| |
| memcpy(initial_frame_data.get() + offset, settings_frame->data(), |
| settings_frame->size()); |
| offset += settings_frame->size(); |
| |
| if (send_window_update) { |
| memcpy(initial_frame_data.get() + offset, window_update_frame->data(), |
| window_update_frame->size()); |
| } |
| |
| auto initial_frame = std::make_unique<spdy::SpdySerializedFrame>( |
| initial_frame_data.release(), initial_frame_size, |
| /* owns_buffer = */ true); |
| EnqueueSessionWrite(HIGHEST, spdy::SpdyFrameType::SETTINGS, |
| std::move(initial_frame)); |
| } |
| |
| void SpdySession::HandleSetting(uint32_t id, uint32_t value) { |
| switch (id) { |
| case spdy::SETTINGS_MAX_CONCURRENT_STREAMS: |
| max_concurrent_streams_ = |
| std::min(static_cast<size_t>(value), kMaxConcurrentStreamLimit); |
| ProcessPendingStreamRequests(); |
| break; |
| case spdy::SETTINGS_INITIAL_WINDOW_SIZE: { |
| if (value > static_cast<uint32_t>(std::numeric_limits<int32_t>::max())) { |
| net_log().AddEventWithIntParams( |
| NetLogEventType::HTTP2_SESSION_INITIAL_WINDOW_SIZE_OUT_OF_RANGE, |
| "initial_window_size", value); |
| return; |
| } |
| |
| // spdy::SETTINGS_INITIAL_WINDOW_SIZE updates initial_send_window_size_ |
| // only. |
| int32_t delta_window_size = |
| static_cast<int32_t>(value) - stream_initial_send_window_size_; |
| stream_initial_send_window_size_ = static_cast<int32_t>(value); |
| UpdateStreamsSendWindowSize(delta_window_size); |
| net_log().AddEventWithIntParams( |
| NetLogEventType::HTTP2_SESSION_UPDATE_STREAMS_SEND_WINDOW_SIZE, |
| "delta_window_size", delta_window_size); |
| break; |
| } |
| case spdy::SETTINGS_ENABLE_CONNECT_PROTOCOL: |
| if ((value != 0 && value != 1) || (support_websocket_ && value == 0)) { |
| DoDrainSession( |
| ERR_HTTP2_PROTOCOL_ERROR, |
| "Invalid value for spdy::SETTINGS_ENABLE_CONNECT_PROTOCOL."); |
| return; |
| } |
| if (value == 1) { |
| support_websocket_ = true; |
| } |
| break; |
| } |
| } |
| |
| void SpdySession::UpdateStreamsSendWindowSize(int32_t delta_window_size) { |
| for (const auto& value : active_streams_) { |
| if (!value.second->AdjustSendWindowSize(delta_window_size)) { |
| DoDrainSession( |
| ERR_HTTP2_FLOW_CONTROL_ERROR, |
| base::StringPrintf( |
| "New spdy::SETTINGS_INITIAL_WINDOW_SIZE value overflows " |
| "flow control window of stream %d.", |
| value.second->stream_id())); |
| return; |
| } |
| } |
| |
| for (auto* const stream : created_streams_) { |
| if (!stream->AdjustSendWindowSize(delta_window_size)) { |
| DoDrainSession( |
| ERR_HTTP2_FLOW_CONTROL_ERROR, |
| base::StringPrintf( |
| "New spdy::SETTINGS_INITIAL_WINDOW_SIZE value overflows " |
| "flow control window of stream %d.", |
| stream->stream_id())); |
| return; |
| } |
| } |
| } |
| |
| void SpdySession::MaybeSendPrefacePing() { |
| if (ping_in_flight_ || check_ping_status_pending_ || |
| !enable_ping_based_connection_checking_) { |
| return; |
| } |
| |
| // If there has been no read activity in the session for some time, |
| // then send a preface-PING. |
| if (time_func_() > last_read_time_ + connection_at_risk_of_loss_time_) |
| WritePingFrame(next_ping_id_, false); |
| } |
| |
| void SpdySession::SendWindowUpdateFrame(spdy::SpdyStreamId stream_id, |
| uint32_t delta_window_size, |
| RequestPriority priority) { |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| if (it != active_streams_.end()) { |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| } else { |
| CHECK_EQ(stream_id, spdy::kSessionFlowControlStreamId); |
| } |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_SEND_WINDOW_UPDATE, [&] { |
| return NetLogSpdyWindowUpdateFrameParams(stream_id, delta_window_size); |
| }); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<spdy::SpdySerializedFrame> window_update_frame( |
| buffered_spdy_framer_->CreateWindowUpdate(stream_id, delta_window_size)); |
| EnqueueSessionWrite(priority, spdy::SpdyFrameType::WINDOW_UPDATE, |
| std::move(window_update_frame)); |
| } |
| |
| void SpdySession::WritePingFrame(spdy::SpdyPingId unique_id, bool is_ack) { |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<spdy::SpdySerializedFrame> ping_frame( |
| buffered_spdy_framer_->CreatePingFrame(unique_id, is_ack)); |
| EnqueueSessionWrite(HIGHEST, spdy::SpdyFrameType::PING, |
| std::move(ping_frame)); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_PING, [&] { |
| return NetLogSpdyPingParams(unique_id, is_ack, "sent"); |
| }); |
| } |
| if (!is_ack) { |
| DCHECK(!ping_in_flight_); |
| |
| ping_in_flight_ = true; |
| ++next_ping_id_; |
| PlanToCheckPingStatus(); |
| last_ping_sent_time_ = time_func_(); |
| } |
| } |
| |
| void SpdySession::PlanToCheckPingStatus() { |
| if (check_ping_status_pending_) |
| return; |
| |
| check_ping_status_pending_ = true; |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::CheckPingStatus, weak_factory_.GetWeakPtr(), |
| time_func_()), |
| hung_interval_); |
| } |
| |
| void SpdySession::CheckPingStatus(base::TimeTicks last_check_time) { |
| CHECK(!in_io_loop_); |
| DCHECK(check_ping_status_pending_); |
| |
| if (!ping_in_flight_) { |
| // A response has been received for the ping we had sent. |
| check_ping_status_pending_ = false; |
| return; |
| } |
| |
| const base::TimeTicks now = time_func_(); |
| if (now > last_read_time_ + hung_interval_ || |
| last_read_time_ < last_check_time) { |
| check_ping_status_pending_ = false; |
| DoDrainSession(ERR_HTTP2_PING_FAILED, "Failed ping."); |
| return; |
| } |
| |
| // Check the status of connection after a delay. |
| const base::TimeDelta delay = last_read_time_ + hung_interval_ - now; |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce(&SpdySession::CheckPingStatus, weak_factory_.GetWeakPtr(), |
| now), |
| delay); |
| } |
| |
| spdy::SpdyStreamId SpdySession::GetNewStreamId() { |
| CHECK_LE(stream_hi_water_mark_, kLastStreamId); |
| spdy::SpdyStreamId id = stream_hi_water_mark_; |
| stream_hi_water_mark_ += 2; |
| return id; |
| } |
| |
| void SpdySession::EnqueueSessionWrite( |
| RequestPriority priority, |
| spdy::SpdyFrameType frame_type, |
| std::unique_ptr<spdy::SpdySerializedFrame> frame) { |
| DCHECK(frame_type == spdy::SpdyFrameType::RST_STREAM || |
| frame_type == spdy::SpdyFrameType::SETTINGS || |
| frame_type == spdy::SpdyFrameType::WINDOW_UPDATE || |
| frame_type == spdy::SpdyFrameType::PING || |
| frame_type == spdy::SpdyFrameType::GOAWAY); |
| DCHECK(IsSpdyFrameTypeWriteCapped(frame_type)); |
| if (write_queue_.num_queued_capped_frames() > |
| session_max_queued_capped_frames_) { |
| LOG(WARNING) |
| << "Draining session due to exceeding max queued capped frames"; |
| // Use ERR_CONNECTION_CLOSED to avoid sending a GOAWAY frame since that |
| // frame would also exceed the cap. |
| DoDrainSession(ERR_CONNECTION_CLOSED, "Exceeded max queued capped frames"); |
| return; |
| } |
| auto buffer = std::make_unique<SpdyBuffer>(std::move(frame)); |
| EnqueueWrite(priority, frame_type, |
| std::make_unique<SimpleBufferProducer>(std::move(buffer)), |
| base::WeakPtr<SpdyStream>(), |
| kSpdySessionCommandsTrafficAnnotation); |
| } |
| |
| void SpdySession::EnqueueWrite( |
| RequestPriority priority, |
| spdy::SpdyFrameType frame_type, |
| std::unique_ptr<SpdyBufferProducer> producer, |
| const base::WeakPtr<SpdyStream>& stream, |
| const NetworkTrafficAnnotationTag& traffic_annotation) { |
| if (availability_state_ == STATE_DRAINING) |
| return; |
| |
| write_queue_.Enqueue(priority, frame_type, std::move(producer), stream, |
| traffic_annotation); |
| if (greased_http2_frame_ && (frame_type == spdy::SpdyFrameType::SETTINGS || |
| frame_type == spdy::SpdyFrameType::HEADERS)) { |
| write_queue_.Enqueue( |
| priority, |
| static_cast<spdy::SpdyFrameType>(greased_http2_frame_.value().type), |
| std::make_unique<GreasedBufferProducer>( |
| stream, &greased_http2_frame_.value(), buffered_spdy_framer_.get()), |
| stream, traffic_annotation); |
| } |
| MaybePostWriteLoop(); |
| } |
| |
| void SpdySession::InsertCreatedStream(std::unique_ptr<SpdyStream> stream) { |
| CHECK_EQ(stream->stream_id(), 0u); |
| auto it = created_streams_.lower_bound(stream.get()); |
| CHECK(it == created_streams_.end() || *it != stream.get()); |
| created_streams_.insert(it, stream.release()); |
| } |
| |
| std::unique_ptr<SpdyStream> SpdySession::ActivateCreatedStream( |
| SpdyStream* stream) { |
| CHECK_EQ(stream->stream_id(), 0u); |
| auto it = created_streams_.find(stream); |
| CHECK(it != created_streams_.end()); |
| stream->set_stream_id(GetNewStreamId()); |
| std::unique_ptr<SpdyStream> owned_stream(stream); |
| created_streams_.erase(it); |
| return owned_stream; |
| } |
| |
| void SpdySession::InsertActivatedStream(std::unique_ptr<SpdyStream> stream) { |
| spdy::SpdyStreamId stream_id = stream->stream_id(); |
| CHECK_NE(stream_id, 0u); |
| std::pair<ActiveStreamMap::iterator, bool> result = |
| active_streams_.insert(std::make_pair(stream_id, stream.get())); |
| CHECK(result.second); |
| ignore_result(stream.release()); |
| } |
| |
| void SpdySession::DeleteStream(std::unique_ptr<SpdyStream> stream, int status) { |
| if (in_flight_write_stream_.get() == stream.get()) { |
| // If we're deleting the stream for the in-flight write, we still |
| // need to let the write complete, so we clear |
| // |in_flight_write_stream_| and let the write finish on its own |
| // without notifying |in_flight_write_stream_|. |
| in_flight_write_stream_.reset(); |
| } |
| |
| write_queue_.RemovePendingWritesForStream(stream.get()); |
| stream->OnClose(status); |
| |
| if (availability_state_ == STATE_AVAILABLE) { |
| ProcessPendingStreamRequests(); |
| } |
| } |
| |
| void SpdySession::RecordPingRTTHistogram(base::TimeDelta duration) { |
| UMA_HISTOGRAM_CUSTOM_TIMES("Net.SpdyPing.RTT", duration, |
| base::TimeDelta::FromMilliseconds(1), |
| base::TimeDelta::FromMinutes(10), 100); |
| } |
| |
| void SpdySession::RecordHistograms() { |
| UMA_HISTOGRAM_CUSTOM_COUNTS("Net.SpdyStreamsPerSession", |
| streams_initiated_count_, 1, 300, 50); |
| UMA_HISTOGRAM_CUSTOM_COUNTS("Net.SpdyStreamsPushedPerSession", |
| streams_pushed_count_, 1, 300, 50); |
| UMA_HISTOGRAM_CUSTOM_COUNTS("Net.SpdyStreamsPushedAndClaimedPerSession", |
| streams_pushed_and_claimed_count_, 1, 300, 50); |
| UMA_HISTOGRAM_CUSTOM_COUNTS("Net.SpdyStreamsAbandonedPerSession", |
| streams_abandoned_count_, 1, 300, 50); |
| UMA_HISTOGRAM_COUNTS_1M("Net.SpdySession.PushedBytes", bytes_pushed_count_); |
| DCHECK_LE(bytes_pushed_and_unclaimed_count_, bytes_pushed_count_); |
| UMA_HISTOGRAM_COUNTS_1M("Net.SpdySession.PushedAndUnclaimedBytes", |
| bytes_pushed_and_unclaimed_count_); |
| UMA_HISTOGRAM_BOOLEAN("Net.SpdySession.ServerSupportsWebSocket", |
| support_websocket_); |
| } |
| |
| void SpdySession::RecordProtocolErrorHistogram( |
| SpdyProtocolErrorDetails details) { |
| UMA_HISTOGRAM_ENUMERATION("Net.SpdySessionErrorDetails2", details, |
| NUM_SPDY_PROTOCOL_ERROR_DETAILS); |
| if (base::EndsWith(host_port_pair().host(), "google.com", |
| base::CompareCase::INSENSITIVE_ASCII)) { |
| UMA_HISTOGRAM_ENUMERATION("Net.SpdySessionErrorDetails_Google2", details, |
| NUM_SPDY_PROTOCOL_ERROR_DETAILS); |
| } |
| } |
| |
| // static |
| void SpdySession::RecordPushedStreamVaryResponseHeaderHistogram( |
| const spdy::SpdyHeaderBlock& headers) { |
| UMA_HISTOGRAM_ENUMERATION("Net.PushedStreamVaryResponseHeader", |
| ParseVaryInPushedResponse(headers), |
| kNumberOfVaryEntries); |
| } |
| |
| void SpdySession::DcheckGoingAway() const { |
| #if DCHECK_IS_ON() |
| DCHECK_GE(availability_state_, STATE_GOING_AWAY); |
| for (int i = MINIMUM_PRIORITY; i <= MAXIMUM_PRIORITY; ++i) { |
| DCHECK(pending_create_stream_queues_[i].empty()); |
| } |
| DCHECK(created_streams_.empty()); |
| #endif |
| } |
| |
| void SpdySession::DcheckDraining() const { |
| DcheckGoingAway(); |
| DCHECK_EQ(availability_state_, STATE_DRAINING); |
| DCHECK(active_streams_.empty()); |
| DCHECK_EQ(0u, pool_->push_promise_index()->CountStreamsForSession(this)); |
| } |
| |
| void SpdySession::DoDrainSession(Error err, const std::string& description) { |
| if (availability_state_ == STATE_DRAINING) { |
| return; |
| } |
| MakeUnavailable(); |
| |
| // Notify any requests waiting for handshake confirmation that there is an |
| // error. |
| NotifyRequestsOfConfirmation(err); |
| |
| // Mark host_port_pair requiring HTTP/1.1 for subsequent connections. |
| if (err == ERR_HTTP_1_1_REQUIRED) { |
| http_server_properties_->SetHTTP11Required( |
| url::SchemeHostPort(url::kHttpsScheme, host_port_pair().host(), |
| host_port_pair().port()), |
| spdy_session_key_.network_isolation_key()); |
| } |
| |
| // If |err| indicates an error occurred, inform the peer that we're closing |
| // and why. Don't GOAWAY on a graceful or idle close, as that may |
| // unnecessarily wake the radio. We could technically GOAWAY on network errors |
| // (we'll probably fail to actually write it, but that's okay), however many |
| // unit-tests would need to be updated. |
| if (err != OK && |
| err != ERR_ABORTED && // Used by SpdySessionPool to close idle sessions. |
| err != ERR_NETWORK_CHANGED && // Used to deprecate sessions on IP change. |
| err != ERR_SOCKET_NOT_CONNECTED && err != ERR_HTTP_1_1_REQUIRED && |
| err != ERR_CONNECTION_CLOSED && err != ERR_CONNECTION_RESET) { |
| // Enqueue a GOAWAY to inform the peer of why we're closing the connection. |
| spdy::SpdyGoAwayIR goaway_ir(last_accepted_push_stream_id_, |
| MapNetErrorToGoAwayStatus(err), description); |
| auto frame = std::make_unique<spdy::SpdySerializedFrame>( |
| buffered_spdy_framer_->SerializeFrame(goaway_ir)); |
| EnqueueSessionWrite(HIGHEST, spdy::SpdyFrameType::GOAWAY, std::move(frame)); |
| } |
| |
| availability_state_ = STATE_DRAINING; |
| error_on_close_ = err; |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_CLOSE, [&] { |
| return NetLogSpdySessionCloseParams(err, description); |
| }); |
| |
| base::UmaHistogramSparse("Net.SpdySession.ClosedOnError", -err); |
| |
| if (err == OK) { |
| // We ought to be going away already, as this is a graceful close. |
| DcheckGoingAway(); |
| } else { |
| StartGoingAway(0, err); |
| } |
| DcheckDraining(); |
| MaybePostWriteLoop(); |
| } |
| |
| void SpdySession::LogAbandonedStream(SpdyStream* stream, Error status) { |
| DCHECK(stream); |
| stream->LogStreamError(status, "Abandoned."); |
| // We don't increment the streams abandoned counter here. If the |
| // stream isn't active (i.e., it hasn't written anything to the wire |
| // yet) then it's as if it never existed. If it is active, then |
| // LogAbandonedActiveStream() will increment the counters. |
| } |
| |
| void SpdySession::LogAbandonedActiveStream(ActiveStreamMap::const_iterator it, |
| Error status) { |
| DCHECK_GT(it->first, 0u); |
| LogAbandonedStream(it->second, status); |
| ++streams_abandoned_count_; |
| } |
| |
| void SpdySession::CompleteStreamRequest( |
| const base::WeakPtr<SpdyStreamRequest>& pending_request) { |
| // Abort if the request has already been cancelled. |
| if (!pending_request) |
| return; |
| |
| base::WeakPtr<SpdyStream> stream; |
| int rv = TryCreateStream(pending_request, &stream); |
| |
| if (rv == OK) { |
| DCHECK(stream); |
| pending_request->OnRequestCompleteSuccess(stream); |
| return; |
| } |
| DCHECK(!stream); |
| |
| if (rv != ERR_IO_PENDING) { |
| pending_request->OnRequestCompleteFailure(rv); |
| } |
| } |
| |
| void SpdySession::CancelPushedStreamIfUnclaimed(spdy::SpdyStreamId stream_id) { |
| auto active_it = active_streams_.find(stream_id); |
| if (active_it == active_streams_.end()) |
| return; |
| |
| // Make sure to cancel the correct stream. It is possible that the pushed | <