| // 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 <utility> |
| |
| #include "base/bind.h" |
| #include "base/compiler_specific.h" |
| #include "base/feature_list.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/metrics/sparse_histogram.h" |
| #include "base/profiler/scoped_tracker.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/stl_util.h" |
| #include "base/strings/string_number_conversions.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/trace_event.h" |
| #include "base/values.h" |
| #include "crypto/ec_private_key.h" |
| #include "crypto/ec_signature_creator.h" |
| #include "net/base/proxy_delegate.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_log_util.h" |
| #include "net/http/http_network_session.h" |
| #include "net/http/http_server_properties.h" |
| #include "net/http/http_util.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.h" |
| #include "net/log/net_log_source_type.h" |
| #include "net/log/net_log_with_source.h" |
| #include "net/proxy/proxy_server.h" |
| #include "net/socket/ssl_client_socket.h" |
| #include "net/spdy/platform/api/spdy_estimate_memory_usage.h" |
| #include "net/spdy/spdy_buffer_producer.h" |
| #include "net/spdy/spdy_frame_builder.h" |
| #include "net/spdy/spdy_http_utils.h" |
| #include "net/spdy/spdy_protocol.h" |
| #include "net/spdy/spdy_session_pool.h" |
| #include "net/spdy/spdy_stream.h" |
| #include "net/ssl/channel_id_service.h" |
| #include "net/ssl/ssl_cipher_suite_names.h" |
| #include "net/ssl/ssl_connection_status_flags.h" |
| |
| namespace net { |
| |
| namespace { |
| |
| const int kReadBufferSize = 8 * 1024; |
| const int kDefaultConnectionAtRiskOfLossSeconds = 10; |
| const int kHungIntervalSeconds = 10; |
| |
| // Minimum seconds that unclaimed pushed streams will be kept in memory. |
| const int kMinPushedStreamLifetimeSeconds = 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; |
| |
| // Experiment to close idle H2 sockets when SpdySession is initialized. |
| const base::Feature kCloseIdleH2SocketsEarlyExperiment{ |
| "CloseIdleH2SocketsEarly", base::FEATURE_DISABLED_BY_DEFAULT}; |
| |
| bool IsSpdySettingAtDefaultInitialValue(SpdySettingsIds setting_id, |
| uint32_t value) { |
| switch (setting_id) { |
| case SETTINGS_HEADER_TABLE_SIZE: |
| return value == kDefaultInitialHeaderTableSize; |
| case SETTINGS_ENABLE_PUSH: |
| return value == kDefaultInitialEnablePush; |
| case SETTINGS_MAX_CONCURRENT_STREAMS: |
| // There is no initial limit on the number of concurrent streams. |
| return false; |
| case SETTINGS_INITIAL_WINDOW_SIZE: |
| return value == kDefaultInitialInitialWindowSize; |
| case SETTINGS_MAX_FRAME_SIZE: |
| return value == kDefaultInitialMaxFrameSize; |
| case SETTINGS_MAX_HEADER_LIST_SIZE: |
| // There is no initial limit on the size of the header list. |
| return false; |
| default: |
| // Undefined parameters have no initial value. |
| return false; |
| } |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyHeadersSentCallback( |
| const SpdyHeaderBlock* headers, |
| bool fin, |
| SpdyStreamId stream_id, |
| bool has_priority, |
| int weight, |
| SpdyStreamId parent_stream_id, |
| bool exclusive, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->Set("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict->SetBoolean("fin", fin); |
| dict->SetInteger("stream_id", stream_id); |
| dict->SetBoolean("has_priority", has_priority); |
| if (has_priority) { |
| dict->SetInteger("parent_stream_id", parent_stream_id); |
| dict->SetInteger("weight", weight); |
| dict->SetBoolean("exclusive", exclusive); |
| } |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyHeadersReceivedCallback( |
| const SpdyHeaderBlock* headers, |
| bool fin, |
| SpdyStreamId stream_id, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->Set("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict->SetBoolean("fin", fin); |
| dict->SetInteger("stream_id", stream_id); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySessionCloseCallback( |
| int net_error, |
| const std::string* description, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("net_error", net_error); |
| dict->SetString("description", *description); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySessionCallback( |
| const HostPortProxyPair* host_pair, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetString("host", host_pair->first.ToString()); |
| dict->SetString("proxy", host_pair->second.ToPacString()); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyInitializedCallback( |
| NetLogSource source, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| if (source.IsValid()) { |
| source.AddToEventParameters(dict.get()); |
| } |
| dict->SetString("protocol", NextProtoToString(kProtoHTTP2)); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySendSettingsCallback( |
| const SettingsMap* settings, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| auto settings_list = base::MakeUnique<base::ListValue>(); |
| for (SettingsMap::const_iterator it = settings->begin(); |
| it != settings->end(); ++it) { |
| const SpdySettingsIds id = it->first; |
| const uint32_t value = it->second; |
| const char* settings_string; |
| SettingsIdToString(id, &settings_string); |
| settings_list->AppendString(base::StringPrintf("[id:%u (%s) value:%u]", id, |
| settings_string, value)); |
| } |
| dict->Set("settings", std::move(settings_list)); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyRecvSettingsCallback( |
| const HostPortPair& host_port_pair, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetString("host", host_port_pair.ToString()); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyRecvSettingCallback( |
| SpdySettingsIds id, |
| uint32_t value, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| const char* settings_string; |
| SettingsIdToString(id, &settings_string); |
| dict->SetString("id", base::StringPrintf("%u (%s)", id, settings_string)); |
| dict->SetInteger("value", value); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyWindowUpdateFrameCallback( |
| SpdyStreamId stream_id, |
| uint32_t delta, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", static_cast<int>(stream_id)); |
| dict->SetInteger("delta", delta); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySessionWindowUpdateCallback( |
| int32_t delta, |
| int32_t window_size, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("delta", delta); |
| dict->SetInteger("window_size", window_size); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyDataCallback( |
| SpdyStreamId stream_id, |
| int size, |
| bool fin, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", static_cast<int>(stream_id)); |
| dict->SetInteger("size", size); |
| dict->SetBoolean("fin", fin); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyRecvRstStreamCallback( |
| SpdyStreamId stream_id, |
| SpdyErrorCode error_code, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", static_cast<int>(stream_id)); |
| dict->SetString( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySendRstStreamCallback( |
| SpdyStreamId stream_id, |
| SpdyErrorCode error_code, |
| const std::string* description, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", static_cast<int>(stream_id)); |
| dict->SetString( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| dict->SetString("description", *description); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyPingCallback( |
| SpdyPingId unique_id, |
| bool is_ack, |
| const char* type, |
| NetLogCaptureMode /* capture_mode */) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("unique_id", static_cast<int>(unique_id)); |
| dict->SetString("type", type); |
| dict->SetBoolean("is_ack", is_ack); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyRecvGoAwayCallback( |
| SpdyStreamId last_stream_id, |
| int active_streams, |
| int unclaimed_streams, |
| SpdyErrorCode error_code, |
| base::StringPiece debug_data, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("last_accepted_stream_id", static_cast<int>(last_stream_id)); |
| dict->SetInteger("active_streams", active_streams); |
| dict->SetInteger("unclaimed_streams", unclaimed_streams); |
| dict->SetString( |
| "error_code", |
| base::StringPrintf("%u (%s)", error_code, ErrorCodeToString(error_code))); |
| dict->SetString("debug_data", |
| ElideGoAwayDebugDataForNetLog(capture_mode, debug_data)); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyPushPromiseReceivedCallback( |
| const SpdyHeaderBlock* headers, |
| SpdyStreamId stream_id, |
| SpdyStreamId promised_stream_id, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->Set("headers", ElideSpdyHeaderBlockForNetLog(*headers, capture_mode)); |
| dict->SetInteger("id", stream_id); |
| dict->SetInteger("promised_stream_id", promised_stream_id); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyAdoptedPushStreamCallback( |
| SpdyStreamId stream_id, |
| const GURL* url, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", stream_id); |
| dict->SetString("url", url->spec()); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdySessionStalledCallback( |
| size_t num_active_streams, |
| size_t num_created_streams, |
| size_t num_pushed_streams, |
| size_t max_concurrent_streams, |
| const std::string& url, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("num_active_streams", num_active_streams); |
| dict->SetInteger("num_created_streams", num_created_streams); |
| dict->SetInteger("num_pushed_streams", num_pushed_streams); |
| dict->SetInteger("max_concurrent_streams", max_concurrent_streams); |
| dict->SetString("url", url); |
| return std::move(dict); |
| } |
| |
| std::unique_ptr<base::Value> NetLogSpdyPriorityCallback( |
| SpdyStreamId stream_id, |
| SpdyStreamId parent_stream_id, |
| int weight, |
| bool exclusive, |
| NetLogCaptureMode capture_mode) { |
| auto dict = base::MakeUnique<base::DictionaryValue>(); |
| dict->SetInteger("stream_id", stream_id); |
| dict->SetInteger("parent_stream_id", parent_stream_id); |
| dict->SetInteger("weight", weight); |
| dict->SetBoolean("exclusive", exclusive); |
| return std::move(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( |
| SpdyFramer::SpdyFramerError err) { |
| switch (err) { |
| case SpdyFramer::SPDY_NO_ERROR: |
| return SPDY_ERROR_NO_ERROR; |
| case SpdyFramer::SPDY_INVALID_STREAM_ID: |
| return SPDY_ERROR_INVALID_STREAM_ID; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME; |
| case SpdyFramer::SPDY_CONTROL_PAYLOAD_TOO_LARGE: |
| return SPDY_ERROR_CONTROL_PAYLOAD_TOO_LARGE; |
| case SpdyFramer::SPDY_ZLIB_INIT_FAILURE: |
| return SPDY_ERROR_ZLIB_INIT_FAILURE; |
| case SpdyFramer::SPDY_UNSUPPORTED_VERSION: |
| return SPDY_ERROR_UNSUPPORTED_VERSION; |
| case SpdyFramer::SPDY_DECOMPRESS_FAILURE: |
| return SPDY_ERROR_DECOMPRESS_FAILURE; |
| case SpdyFramer::SPDY_COMPRESS_FAILURE: |
| return SPDY_ERROR_COMPRESS_FAILURE; |
| case SpdyFramer::SPDY_GOAWAY_FRAME_CORRUPT: |
| return SPDY_ERROR_GOAWAY_FRAME_CORRUPT; |
| case SpdyFramer::SPDY_RST_STREAM_FRAME_CORRUPT: |
| return SPDY_ERROR_RST_STREAM_FRAME_CORRUPT; |
| case SpdyFramer::SPDY_INVALID_PADDING: |
| return SPDY_ERROR_INVALID_PADDING; |
| case SpdyFramer::SPDY_INVALID_DATA_FRAME_FLAGS: |
| return SPDY_ERROR_INVALID_DATA_FRAME_FLAGS; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME_FLAGS: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME_FLAGS; |
| case SpdyFramer::SPDY_UNEXPECTED_FRAME: |
| return SPDY_ERROR_UNEXPECTED_FRAME; |
| case SpdyFramer::SPDY_INTERNAL_FRAMER_ERROR: |
| return SPDY_ERROR_INTERNAL_FRAMER_ERROR; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME_SIZE: |
| return SPDY_ERROR_INVALID_CONTROL_FRAME_SIZE; |
| case SpdyFramer::SPDY_OVERSIZED_PAYLOAD: |
| return SPDY_ERROR_OVERSIZED_PAYLOAD; |
| case SpdyFramer::LAST_ERROR: |
| NOTREACHED(); |
| } |
| NOTREACHED(); |
| return static_cast<SpdyProtocolErrorDetails>(-1); |
| } |
| |
| Error MapFramerErrorToNetError(SpdyFramer::SpdyFramerError err) { |
| switch (err) { |
| case SpdyFramer::SPDY_NO_ERROR: |
| return OK; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_CONTROL_PAYLOAD_TOO_LARGE: |
| return ERR_SPDY_FRAME_SIZE_ERROR; |
| case SpdyFramer::SPDY_ZLIB_INIT_FAILURE: |
| return ERR_SPDY_COMPRESSION_ERROR; |
| case SpdyFramer::SPDY_UNSUPPORTED_VERSION: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_DECOMPRESS_FAILURE: |
| return ERR_SPDY_COMPRESSION_ERROR; |
| case SpdyFramer::SPDY_COMPRESS_FAILURE: |
| return ERR_SPDY_COMPRESSION_ERROR; |
| case SpdyFramer::SPDY_GOAWAY_FRAME_CORRUPT: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_RST_STREAM_FRAME_CORRUPT: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_INVALID_PADDING: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_INVALID_DATA_FRAME_FLAGS: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME_FLAGS: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_UNEXPECTED_FRAME: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_INTERNAL_FRAMER_ERROR: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_INVALID_CONTROL_FRAME_SIZE: |
| return ERR_SPDY_FRAME_SIZE_ERROR; |
| case SpdyFramer::SPDY_INVALID_STREAM_ID: |
| return ERR_SPDY_PROTOCOL_ERROR; |
| case SpdyFramer::SPDY_OVERSIZED_PAYLOAD: |
| return ERR_SPDY_FRAME_SIZE_ERROR; |
| case SpdyFramer::LAST_ERROR: |
| NOTREACHED(); |
| } |
| NOTREACHED(); |
| return ERR_SPDY_PROTOCOL_ERROR; |
| } |
| |
| SpdyProtocolErrorDetails MapRstStreamStatusToProtocolError( |
| SpdyErrorCode error_code) { |
| switch (error_code) { |
| case ERROR_CODE_NO_ERROR: |
| return STATUS_CODE_NO_ERROR; |
| case ERROR_CODE_PROTOCOL_ERROR: |
| return STATUS_CODE_PROTOCOL_ERROR; |
| case ERROR_CODE_INTERNAL_ERROR: |
| return STATUS_CODE_INTERNAL_ERROR; |
| case ERROR_CODE_FLOW_CONTROL_ERROR: |
| return STATUS_CODE_FLOW_CONTROL_ERROR; |
| case ERROR_CODE_SETTINGS_TIMEOUT: |
| return STATUS_CODE_SETTINGS_TIMEOUT; |
| case ERROR_CODE_STREAM_CLOSED: |
| return STATUS_CODE_STREAM_CLOSED; |
| case ERROR_CODE_FRAME_SIZE_ERROR: |
| return STATUS_CODE_FRAME_SIZE_ERROR; |
| case ERROR_CODE_REFUSED_STREAM: |
| return STATUS_CODE_REFUSED_STREAM; |
| case ERROR_CODE_CANCEL: |
| return STATUS_CODE_CANCEL; |
| case ERROR_CODE_COMPRESSION_ERROR: |
| return STATUS_CODE_COMPRESSION_ERROR; |
| case ERROR_CODE_CONNECT_ERROR: |
| return STATUS_CODE_CONNECT_ERROR; |
| case ERROR_CODE_ENHANCE_YOUR_CALM: |
| return STATUS_CODE_ENHANCE_YOUR_CALM; |
| case ERROR_CODE_INADEQUATE_SECURITY: |
| return STATUS_CODE_INADEQUATE_SECURITY; |
| case ERROR_CODE_HTTP_1_1_REQUIRED: |
| return STATUS_CODE_HTTP_1_1_REQUIRED; |
| } |
| NOTREACHED(); |
| return static_cast<SpdyProtocolErrorDetails>(-1); |
| } |
| |
| SpdyErrorCode MapNetErrorToGoAwayStatus(Error err) { |
| switch (err) { |
| case OK: |
| return ERROR_CODE_NO_ERROR; |
| case ERR_SPDY_PROTOCOL_ERROR: |
| return ERROR_CODE_PROTOCOL_ERROR; |
| case ERR_SPDY_FLOW_CONTROL_ERROR: |
| return ERROR_CODE_FLOW_CONTROL_ERROR; |
| case ERR_SPDY_FRAME_SIZE_ERROR: |
| return ERROR_CODE_FRAME_SIZE_ERROR; |
| case ERR_SPDY_COMPRESSION_ERROR: |
| return ERROR_CODE_COMPRESSION_ERROR; |
| case ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY: |
| return ERROR_CODE_INADEQUATE_SECURITY; |
| default: |
| return ERROR_CODE_PROTOCOL_ERROR; |
| } |
| } |
| |
| SpdyStreamRequest::SpdyStreamRequest() : weak_ptr_factory_(this) { |
| Reset(); |
| } |
| |
| SpdyStreamRequest::~SpdyStreamRequest() { |
| CancelRequest(); |
| } |
| |
| int SpdyStreamRequest::StartRequest(SpdyStreamType type, |
| const base::WeakPtr<SpdySession>& session, |
| const GURL& url, |
| RequestPriority priority, |
| const NetLogWithSource& net_log, |
| const CompletionCallback& callback) { |
| DCHECK(session); |
| DCHECK(!session_); |
| DCHECK(!stream_); |
| DCHECK(callback_.is_null()); |
| |
| type_ = type; |
| session_ = session; |
| url_ = url; |
| priority_ = priority; |
| net_log_ = net_log; |
| callback_ = callback; |
| |
| base::WeakPtr<SpdyStream> stream; |
| int rv = session->TryCreateStream(weak_ptr_factory_.GetWeakPtr(), &stream); |
| if (rv == OK) { |
| 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::OnRequestCompleteSuccess( |
| const base::WeakPtr<SpdyStream>& stream) { |
| DCHECK(session_); |
| DCHECK(!stream_); |
| DCHECK(!callback_.is_null()); |
| CompletionCallback callback = callback_; |
| Reset(); |
| DCHECK(stream); |
| stream_ = stream; |
| callback.Run(OK); |
| } |
| |
| void SpdyStreamRequest::OnRequestCompleteFailure(int rv) { |
| DCHECK(session_); |
| DCHECK(!stream_); |
| DCHECK(!callback_.is_null()); |
| CompletionCallback callback = callback_; |
| Reset(); |
| DCHECK_NE(rv, OK); |
| callback.Run(rv); |
| } |
| |
| void SpdyStreamRequest::Reset() { |
| type_ = SPDY_BIDIRECTIONAL_STREAM; |
| session_.reset(); |
| stream_.reset(); |
| url_ = GURL(); |
| priority_ = MINIMUM_PRIORITY; |
| net_log_ = NetLogWithSource(); |
| callback_.Reset(); |
| } |
| |
| SpdySession::UnclaimedPushedStreamContainer::UnclaimedPushedStreamContainer( |
| SpdySession* spdy_session) |
| : spdy_session_(spdy_session) {} |
| SpdySession::UnclaimedPushedStreamContainer::~UnclaimedPushedStreamContainer() { |
| } |
| |
| size_t SpdySession::UnclaimedPushedStreamContainer::erase(const GURL& url) { |
| const_iterator it = find(url); |
| if (it != end()) { |
| streams_.erase(it); |
| return 1; |
| } |
| return 0; |
| } |
| |
| SpdySession::UnclaimedPushedStreamContainer::iterator |
| SpdySession::UnclaimedPushedStreamContainer::erase(const_iterator it) { |
| DCHECK(spdy_session_->pool_); |
| DCHECK(it != end()); |
| // Only allow cross-origin push for secure resources. |
| if (it->first.SchemeIsCryptographic()) { |
| spdy_session_->pool_->UnregisterUnclaimedPushedStream(it->first, |
| spdy_session_); |
| } |
| return streams_.erase(it); |
| } |
| |
| SpdySession::UnclaimedPushedStreamContainer::iterator |
| SpdySession::UnclaimedPushedStreamContainer::insert( |
| const_iterator position, |
| const GURL& url, |
| SpdyStreamId stream_id, |
| const base::TimeTicks& creation_time) { |
| DCHECK(spdy_session_->pool_); |
| // Only allow cross-origin push for https resources. |
| if (url.SchemeIsCryptographic()) { |
| spdy_session_->pool_->RegisterUnclaimedPushedStream( |
| url, spdy_session_->GetWeakPtr()); |
| } |
| return streams_.insert( |
| position, |
| std::make_pair( |
| url, SpdySession::UnclaimedPushedStreamContainer::PushedStreamInfo( |
| stream_id, creation_time))); |
| } |
| |
| size_t SpdySession::UnclaimedPushedStreamContainer::EstimateMemoryUsage() |
| const { |
| return SpdyEstimateMemoryUsage(streams_); |
| } |
| |
| // static |
| bool SpdySession::CanPool(TransportSecurityState* transport_security_state, |
| const SSLInfo& ssl_info, |
| 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) |
| return false; |
| |
| if (ssl_info.channel_id_sent && |
| ChannelIDService::GetDomainForHost(new_hostname) != |
| ChannelIDService::GetDomainForHost(old_hostname)) { |
| return false; |
| } |
| |
| if (!ssl_info.cert->VerifyNameMatch(new_hostname, false)) |
| 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; |
| } |
| |
| if (ssl_info.ct_cert_policy_compliance != |
| ct::CertPolicyCompliance::CERT_POLICY_COMPLIES_VIA_SCTS && |
| ssl_info.ct_cert_policy_compliance != |
| ct::CertPolicyCompliance::CERT_POLICY_BUILD_NOT_TIMELY && |
| transport_security_state->ShouldRequireCT( |
| new_hostname, ssl_info.cert.get(), ssl_info.public_key_hashes)) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| SpdySession::SpdySession(const SpdySessionKey& spdy_session_key, |
| HttpServerProperties* http_server_properties, |
| TransportSecurityState* transport_security_state, |
| bool enable_sending_initial_data, |
| bool enable_ping_based_connection_checking, |
| size_t session_max_recv_window_size, |
| const SettingsMap& initial_settings, |
| TimeFunc time_func, |
| ServerPushDelegate* push_delegate, |
| ProxyDelegate* proxy_delegate, |
| NetLog* net_log) |
| : in_io_loop_(false), |
| spdy_session_key_(spdy_session_key), |
| pool_(NULL), |
| http_server_properties_(http_server_properties), |
| transport_security_state_(transport_security_state), |
| read_buffer_(new IOBuffer(kReadBufferSize)), |
| stream_hi_water_mark_(kFirstStreamId), |
| last_accepted_push_stream_id_(0), |
| unclaimed_pushed_streams_(this), |
| 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_(DATA), |
| in_flight_write_frame_size_(0), |
| is_secure_(false), |
| availability_state_(STATE_AVAILABLE), |
| read_state_(READ_STATE_DO_READ), |
| write_state_(WRITE_STATE_IDLE), |
| error_on_close_(OK), |
| initial_settings_(initial_settings), |
| max_concurrent_streams_(kInitialMaxConcurrentStreams), |
| max_concurrent_pushed_streams_( |
| initial_settings.at(SETTINGS_MAX_CONCURRENT_STREAMS)), |
| streams_initiated_count_(0), |
| streams_pushed_count_(0), |
| streams_pushed_and_claimed_count_(0), |
| streams_abandoned_count_(0), |
| pings_in_flight_(0), |
| next_ping_id_(1), |
| last_activity_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_recv_window_size_(0), |
| session_unacked_recv_window_bytes_(0), |
| stream_initial_send_window_size_(kDefaultInitialWindowSize), |
| max_header_table_size_(initial_settings.at(SETTINGS_HEADER_TABLE_SIZE)), |
| stream_max_recv_window_size_( |
| initial_settings.at(SETTINGS_INITIAL_WINDOW_SIZE)), |
| net_log_( |
| NetLogWithSource::Make(net_log, NetLogSourceType::HTTP2_SESSION)), |
| enable_sending_initial_data_(enable_sending_initial_data), |
| enable_ping_based_connection_checking_( |
| enable_ping_based_connection_checking), |
| connection_at_risk_of_loss_time_( |
| base::TimeDelta::FromSeconds(kDefaultConnectionAtRiskOfLossSeconds)), |
| hung_interval_(base::TimeDelta::FromSeconds(kHungIntervalSeconds)), |
| proxy_delegate_(proxy_delegate), |
| time_func_(time_func), |
| weak_factory_(this) { |
| net_log_.BeginEvent( |
| NetLogEventType::HTTP2_SESSION, |
| base::Bind(&NetLogSpdySessionCallback, &host_port_proxy_pair())); |
| next_unclaimed_push_stream_sweep_time_ = |
| time_func_() + |
| base::TimeDelta::FromSeconds(kMinPushedStreamLifetimeSeconds); |
| |
| DCHECK(base::ContainsKey(initial_settings_, SETTINGS_HEADER_TABLE_SIZE)); |
| DCHECK(base::ContainsKey(initial_settings_, SETTINGS_MAX_CONCURRENT_STREAMS)); |
| DCHECK(base::ContainsKey(initial_settings_, SETTINGS_INITIAL_WINDOW_SIZE)); |
| |
| // TODO(mbelshe): consider randomization of the stream_hi_water_mark. |
| } |
| |
| SpdySession::~SpdySession() { |
| CHECK(!in_io_loop_); |
| DcheckDraining(); |
| |
| // TODO(akalin): Check connection->is_initialized() instead. This |
| // requires re-working CreateFakeSpdySession(), though. |
| DCHECK(connection_->socket()); |
| // With SPDY we can't recycle sockets. |
| connection_->socket()->Disconnect(); |
| |
| RecordHistograms(); |
| |
| net_log_.EndEvent(NetLogEventType::HTTP2_SESSION); |
| } |
| |
| int SpdySession::GetPushStream(const GURL& url, |
| RequestPriority priority, |
| SpdyStream** stream, |
| const NetLogWithSource& stream_net_log) { |
| CHECK(!in_io_loop_); |
| |
| if (availability_state_ == STATE_DRAINING) { |
| *stream = nullptr; |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| *stream = GetActivePushStream(url); |
| if (*stream) { |
| 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 match |
| // the priority of the matching request. |
| if (!(*stream)->IsClosed() && (*stream)->priority() != priority) { |
| (*stream)->set_priority(priority); |
| |
| // Send PRIORITY updates. |
| auto updates = priority_dependency_state_.OnStreamUpdate( |
| (*stream)->stream_id(), |
| ConvertRequestPriorityToSpdyPriority(priority)); |
| for (auto u : updates) { |
| ActiveStreamMap::iterator it = active_streams_.find(u.id); |
| DCHECK(it != active_streams_.end()); |
| int weight = Spdy3PriorityToHttp2Weight( |
| ConvertRequestPriorityToSpdyPriority(it->second->priority())); |
| EnqueuePriorityFrame(u.id, u.dependent_stream_id, weight, u.exclusive); |
| } |
| } |
| } |
| |
| return OK; |
| } |
| |
| void SpdySession::CancelPush(const GURL& url) { |
| UnclaimedPushedStreamContainer::const_iterator unclaimed_it = |
| unclaimed_pushed_streams_.find(url); |
| if (unclaimed_it == unclaimed_pushed_streams_.end()) |
| return; |
| |
| SpdyStreamId stream_id = unclaimed_it->second.stream_id; |
| |
| if (active_streams_.find(stream_id) == active_streams_.end()) { |
| ResetStream(stream_id, ERROR_CODE_CANCEL, |
| "Cancelled push stream with url: " + url.spec()); |
| } |
| unclaimed_pushed_streams_.erase(unclaimed_it); |
| } |
| |
| void SpdySession::InitializeWithSocket( |
| std::unique_ptr<ClientSocketHandle> connection, |
| SpdySessionPool* pool, |
| bool is_secure) { |
| 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); |
| DCHECK(!connection_); |
| |
| // TODO(akalin): Check connection->is_initialized() instead. This |
| // requires re-working CreateFakeSpdySession(), though. |
| DCHECK(connection->socket()); |
| |
| connection_ = std::move(connection); |
| is_secure_ = is_secure; |
| |
| session_send_window_size_ = kDefaultInitialWindowSize; |
| session_recv_window_size_ = kDefaultInitialWindowSize; |
| |
| buffered_spdy_framer_.reset(new BufferedSpdyFramer()); |
| 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, |
| base::Bind(&NetLogSpdyInitializedCallback, |
| connection_->socket()->NetLog().source())); |
| |
| DCHECK_EQ(availability_state_, STATE_AVAILABLE); |
| connection_->AddHigherLayeredPool(this); |
| if (enable_sending_initial_data_) |
| SendInitialData(); |
| pool_ = pool; |
| |
| if (base::FeatureList::IsEnabled(kCloseIdleH2SocketsEarlyExperiment)) { |
| // Close idle sockets in this group, since subsequent requests will go over |
| // this HTTP/2 connection. |
| connection_->CloseIdleSocketsInGroup(); |
| } |
| |
| // Bootstrap the read loop. |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, |
| base::Bind(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ, OK)); |
| } |
| |
| bool SpdySession::VerifyDomainAuthentication(const std::string& domain) { |
| 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, host_port_pair().host(), |
| domain); |
| } |
| |
| void SpdySession::EnqueueStreamWrite( |
| const base::WeakPtr<SpdyStream>& stream, |
| SpdyFrameType frame_type, |
| std::unique_ptr<SpdyBufferProducer> producer) { |
| DCHECK(frame_type == HEADERS || frame_type == DATA); |
| EnqueueWrite(stream->priority(), frame_type, std::move(producer), stream); |
| } |
| |
| std::unique_ptr<SpdySerializedFrame> SpdySession::CreateHeaders( |
| SpdyStreamId stream_id, |
| RequestPriority priority, |
| SpdyControlFlags flags, |
| SpdyHeaderBlock block) { |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| CHECK(it != active_streams_.end()); |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| |
| SendPrefacePingIfNoneInFlight(); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| SpdyPriority spdy_priority = ConvertRequestPriorityToSpdyPriority(priority); |
| |
| std::unique_ptr<SpdySerializedFrame> syn_frame; |
| bool has_priority = true; |
| int weight = Spdy3PriorityToHttp2Weight(spdy_priority); |
| SpdyStreamId dependent_stream_id = 0; |
| bool exclusive = false; |
| |
| priority_dependency_state_.OnStreamCreation(stream_id, spdy_priority, |
| &dependent_stream_id, &exclusive); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent( |
| NetLogEventType::HTTP2_SESSION_SEND_HEADERS, |
| base::Bind(&NetLogSpdyHeadersSentCallback, &block, |
| (flags & CONTROL_FLAG_FIN) != 0, stream_id, has_priority, |
| weight, dependent_stream_id, exclusive)); |
| } |
| |
| SpdyHeadersIR headers(stream_id, std::move(block)); |
| headers.set_has_priority(has_priority); |
| headers.set_weight(weight); |
| headers.set_parent_stream_id(dependent_stream_id); |
| headers.set_exclusive(exclusive); |
| headers.set_fin((flags & CONTROL_FLAG_FIN) != 0); |
| syn_frame.reset( |
| new SpdySerializedFrame(buffered_spdy_framer_->SerializeFrame(headers))); |
| |
| streams_initiated_count_++; |
| |
| return syn_frame; |
| } |
| |
| std::unique_ptr<SpdyBuffer> SpdySession::CreateDataBuffer( |
| SpdyStreamId stream_id, |
| IOBuffer* data, |
| int len, |
| 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().AddEvent( |
| NetLogEventType::HTTP2_SESSION_STREAM_STALLED_BY_STREAM_SEND_WINDOW, |
| NetLog::IntCallback("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().AddEvent( |
| NetLogEventType::HTTP2_SESSION_STREAM_STALLED_BY_SESSION_SEND_WINDOW, |
| NetLog::IntCallback("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<SpdyDataFlags>(flags & ~DATA_FLAG_FIN); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_SEND_DATA, |
| base::Bind(&NetLogSpdyDataCallback, stream_id, |
| effective_len, (flags & DATA_FLAG_FIN) != 0)); |
| } |
| |
| // Send PrefacePing for DATA_FRAMEs with nonzero payload size. |
| if (effective_len > 0) |
| SendPrefacePingIfNoneInFlight(); |
| |
| // TODO(mbelshe): reduce memory copies here. |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<SpdySerializedFrame> frame( |
| buffered_spdy_framer_->CreateDataFrame( |
| stream_id, data->data(), static_cast<uint32_t>(effective_len), |
| flags)); |
| |
| std::unique_ptr<SpdyBuffer> data_buffer(new 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::CloseActiveStream(SpdyStreamId stream_id, int status) { |
| DCHECK_NE(stream_id, 0u); |
| |
| ActiveStreamMap::iterator 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); |
| |
| CreatedStreamSet::iterator it = created_streams_.find(stream.get()); |
| if (it == created_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| CloseCreatedStreamIterator(it, status); |
| } |
| |
| void SpdySession::ResetStream(SpdyStreamId stream_id, |
| SpdyErrorCode error_code, |
| const std::string& description) { |
| DCHECK_NE(stream_id, 0u); |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| ResetStreamIterator(it, error_code, description); |
| } |
| |
| bool SpdySession::IsStreamActive(SpdyStreamId stream_id) const { |
| return base::ContainsKey(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; |
| } |
| |
| url::SchemeHostPort SpdySession::GetServer() { |
| return url::SchemeHostPort(is_secure_ ? "https" : "http", |
| host_port_pair().host(), host_port_pair().port()); |
| } |
| |
| bool SpdySession::GetRemoteEndpoint(IPEndPoint* endpoint) { |
| return GetPeerAddress(endpoint) == OK; |
| } |
| |
| bool SpdySession::GetSSLInfo(SSLInfo* ssl_info) const { |
| return connection_->socket()->GetSSLInfo(ssl_info); |
| } |
| |
| Error SpdySession::GetTokenBindingSignature(crypto::ECPrivateKey* key, |
| TokenBindingType tb_type, |
| std::vector<uint8_t>* out) { |
| if (!is_secure_) { |
| NOTREACHED(); |
| return ERR_FAILED; |
| } |
| SSLClientSocket* ssl_socket = |
| static_cast<SSLClientSocket*>(connection_->socket()); |
| return ssl_socket->GetTokenBindingSignature(key, tb_type, out); |
| } |
| |
| bool SpdySession::WasAlpnNegotiated() const { |
| return connection_->socket()->WasAlpnNegotiated(); |
| } |
| |
| NextProto SpdySession::GetNegotiatedProtocol() const { |
| return connection_->socket()->GetNegotiatedProtocol(); |
| } |
| |
| void SpdySession::SendStreamWindowUpdate(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(SpdyStreamId last_good_stream_id, |
| Error status) { |
| DCHECK_GE(availability_state_, STATE_GOING_AWAY); |
| |
| // 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(ERR_ABORTED); |
| } |
| |
| while (true) { |
| size_t old_size = active_streams_.size(); |
| ActiveStreamMap::iterator 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(); |
| CreatedStreamSet::iterator 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"); |
| } |
| } |
| |
| std::unique_ptr<base::Value> SpdySession::GetInfoAsValue() const { |
| std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue()); |
| |
| dict->SetInteger("source_id", net_log_.source().id); |
| |
| dict->SetString("host_port_pair", host_port_pair().ToString()); |
| if (!pooled_aliases_.empty()) { |
| std::unique_ptr<base::ListValue> alias_list(new base::ListValue()); |
| for (const auto& alias : pooled_aliases_) { |
| alias_list->AppendString(alias.host_port_pair().ToString()); |
| } |
| dict->Set("aliases", std::move(alias_list)); |
| } |
| dict->SetString("proxy", host_port_proxy_pair().second.ToURI()); |
| |
| dict->SetInteger("active_streams", active_streams_.size()); |
| |
| dict->SetInteger("unclaimed_pushed_streams", |
| unclaimed_pushed_streams_.size()); |
| |
| dict->SetBoolean("is_secure", is_secure_); |
| |
| dict->SetString( |
| "negotiated_protocol", |
| NextProtoToString(connection_->socket()->GetNegotiatedProtocol())); |
| |
| dict->SetInteger("error", error_on_close_); |
| dict->SetInteger("max_concurrent_streams", max_concurrent_streams_); |
| |
| dict->SetInteger("streams_initiated_count", streams_initiated_count_); |
| dict->SetInteger("streams_pushed_count", streams_pushed_count_); |
| dict->SetInteger("streams_pushed_and_claimed_count", |
| streams_pushed_and_claimed_count_); |
| dict->SetInteger("streams_abandoned_count", streams_abandoned_count_); |
| DCHECK(buffered_spdy_framer_.get()); |
| dict->SetInteger("frames_received", buffered_spdy_framer_->frames_received()); |
| |
| dict->SetInteger("send_window_size", session_send_window_size_); |
| dict->SetInteger("recv_window_size", session_recv_window_size_); |
| dict->SetInteger("unacked_recv_window_bytes", |
| session_unacked_recv_window_bytes_); |
| return std::move(dict); |
| } |
| |
| bool SpdySession::IsReused() const { |
| return buffered_spdy_framer_->frames_received() > 0 || |
| connection_->reuse_type() == ClientSocketHandle::UNUSED_IDLE; |
| } |
| |
| bool SpdySession::GetLoadTimingInfo(SpdyStreamId stream_id, |
| LoadTimingInfo* load_timing_info) const { |
| return connection_->GetLoadTimingInfo(stream_id != kFirstStreamId, |
| load_timing_info); |
| } |
| |
| size_t SpdySession::num_unclaimed_pushed_streams() const { |
| return unclaimed_pushed_streams_.size(); |
| } |
| |
| size_t SpdySession::count_unclaimed_pushed_streams_for_url( |
| const GURL& url) const { |
| return unclaimed_pushed_streams_.count(url); |
| } |
| |
| int SpdySession::GetPeerAddress(IPEndPoint* address) const { |
| if (connection_->socket()) |
| return connection_->socket()->GetPeerAddress(address); |
| |
| return ERR_SOCKET_NOT_CONNECTED; |
| } |
| |
| int SpdySession::GetLocalAddress(IPEndPoint* address) const { |
| if (connection_->socket()) |
| return connection_->socket()->GetLocalAddress(address); |
| |
| return ERR_SOCKET_NOT_CONNECTED; |
| } |
| |
| void SpdySession::AddPooledAlias(const SpdySessionKey& alias_key) { |
| pooled_aliases_.insert(alias_key); |
| } |
| |
| bool SpdySession::HasAcceptableTransportSecurity() const { |
| // If we're not even using TLS, we have no standards to meet. |
| if (!is_secure_) { |
| return true; |
| } |
| |
| 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; |
| } |
| |
| 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(); |
| connection_->DumpMemoryStats(stats); |
| |
| // |connection_| is estimated in stats->total_size. |read_buffer_| is |
| // estimated in kReadBufferSize. TODO(xunjieli): Make them use EMU(). |
| return stats->total_size + kReadBufferSize + |
| SpdyEstimateMemoryUsage(spdy_session_key_) + |
| SpdyEstimateMemoryUsage(pooled_aliases_) + |
| SpdyEstimateMemoryUsage(active_streams_) + |
| SpdyEstimateMemoryUsage(unclaimed_pushed_streams_) + |
| SpdyEstimateMemoryUsage(created_streams_) + |
| SpdyEstimateMemoryUsage(write_queue_) + |
| SpdyEstimateMemoryUsage(in_flight_write_) + |
| SpdyEstimateMemoryUsage(buffered_spdy_framer_) + |
| SpdyEstimateMemoryUsage(initial_settings_) + |
| SpdyEstimateMemoryUsage(stream_send_unstall_queue_) + |
| SpdyEstimateMemoryUsage(priority_dependency_state_); |
| } |
| |
| // {,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; |
| |
| 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, |
| base::Bind(&NetLogSpdySessionStalledCallback, 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(connection_->socket()); |
| UMA_HISTOGRAM_BOOLEAN("Net.SpdySession.CreateStreamWithSocketConnected", |
| connection_->socket()->IsConnected()); |
| if (!connection_->socket()->IsConnected()) { |
| DoDrainSession( |
| ERR_CONNECTION_CLOSED, |
| "Tried to create SPDY stream for a closed socket connection."); |
| return ERR_CONNECTION_CLOSED; |
| } |
| |
| std::unique_ptr<SpdyStream> new_stream( |
| new SpdyStream(request.type(), GetWeakPtr(), request.url(), |
| request.priority(), stream_initial_send_window_size_, |
| stream_max_recv_window_size_, request.net_log())); |
| *stream = new_stream->GetWeakPtr(); |
| InsertCreatedStream(std::move(new_stream)); |
| |
| return OK; |
| } |
| |
| void 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()); |
| } |
| } |
| |
| 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::Bind(&SpdySession::CompleteStreamRequest, |
| weak_factory_.GetWeakPtr(), pending_request)); |
| } |
| } |
| |
| void SpdySession::TryCreatePushStream(SpdyStreamId stream_id, |
| SpdyStreamId associated_stream_id, |
| SpdyHeaderBlock headers) { |
| // Server-initiated streams should have even sequence numbers. |
| if ((stream_id & 0x1) != 0) { |
| LOG(WARNING) << "Received invalid push stream id " << stream_id; |
| CloseSessionOnError(ERR_SPDY_PROTOCOL_ERROR, "Odd push stream id."); |
| return; |
| } |
| |
| // Server-initiated streams must be associated with client-initiated streams. |
| if ((associated_stream_id & 0x1) != 1) { |
| LOG(WARNING) << "Received push stream id " << stream_id |
| << " with invalid associated stream id"; |
| CloseSessionOnError(ERR_SPDY_PROTOCOL_ERROR, "Push on even stream id."); |
| return; |
| } |
| |
| if (stream_id <= last_accepted_push_stream_id_) { |
| LOG(WARNING) << "Received push stream id " << stream_id |
| << " lesser or equal to the last accepted before"; |
| CloseSessionOnError( |
| ERR_SPDY_PROTOCOL_ERROR, |
| "New push stream id must be greater than the last accepted."); |
| return; |
| } |
| |
| if (IsStreamActive(stream_id)) { |
| // We should not get here, we'll start going away earlier on |
| // |last_seen_push_stream_id_| check. |
| LOG(WARNING) << "Received push for active stream " << stream_id; |
| return; |
| } |
| |
| last_accepted_push_stream_id_ = stream_id; |
| |
| // Pushed streams are speculative, so they start at an IDLE priority. |
| const RequestPriority request_priority = IDLE; |
| |
| if (availability_state_ == STATE_GOING_AWAY) { |
| // TODO(akalin): This behavior isn't in the SPDY spec, although it |
| // probably should be. |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| ERROR_CODE_REFUSED_STREAM, |
| "push stream request received when going away"); |
| return; |
| } |
| |
| if (associated_stream_id == 0) { |
| // In HTTP/2 0 stream id in PUSH_PROMISE frame leads to framer error and |
| // session going away. We should never get here. |
| std::string description = base::StringPrintf( |
| "Received invalid associated stream id %d for pushed stream %d", |
| associated_stream_id, stream_id); |
| EnqueueResetStreamFrame(stream_id, request_priority, |
| ERROR_CODE_REFUSED_STREAM, description); |
| return; |
| } |
| |
| streams_pushed_count_++; |
| |
| // TODO(mbelshe): DCHECK that this is a GET method? |
| |
| // Verify that the response had a URL for us. |
| GURL gurl = GetUrlFromHeaderBlock(headers); |
| if (!gurl.is_valid()) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_PROTOCOL_ERROR, |
| "Pushed stream url was invalid: " + gurl.possibly_invalid_spec()); |
| return; |
| } |
| |
| // Verify we have a valid stream association. |
| ActiveStreamMap::iterator associated_it = |
| active_streams_.find(associated_stream_id); |
| if (associated_it == active_streams_.end()) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_STREAM_CLOSED, |
| base::StringPrintf("Received push for inactive associated stream %d", |
| associated_stream_id)); |
| return; |
| } |
| |
| DCHECK(gurl.is_valid()); |
| |
| // Check that the pushed stream advertises the same origin as its associated |
| // stream. Bypass this check if and only if this session is with a SPDY proxy |
| // that is trusted explicitly as determined by the |proxy_delegate_| or if the |
| // proxy is pushing same-origin resources. |
| if (!HostPortPair::FromURL(gurl).Equals(host_port_pair())) { |
| if (proxy_delegate_ && |
| proxy_delegate_->IsTrustedSpdyProxy( |
| ProxyServer(ProxyServer::SCHEME_HTTPS, host_port_pair()))) { |
| // Disallow pushing of HTTPS content. |
| if (gurl.SchemeIs("https")) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_REFUSED_STREAM, |
| base::StringPrintf("Rejected push of cross origin HTTPS content %d " |
| "from trusted proxy", |
| associated_stream_id)); |
| return; |
| } |
| } else { |
| GURL associated_url(associated_it->second->GetUrlFromHeaders()); |
| if (associated_url.SchemeIs("https")) { |
| SSLInfo ssl_info; |
| CHECK(GetSSLInfo(&ssl_info)); |
| if (!gurl.SchemeIs("https") || |
| !CanPool(transport_security_state_, ssl_info, associated_url.host(), |
| gurl.host())) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_REFUSED_STREAM, |
| base::StringPrintf("Rejected push stream %d on secure connection", |
| associated_stream_id)); |
| return; |
| } |
| } else { |
| // TODO(bnc): Change SpdyNetworkTransactionTests to use secure sockets. |
| if (associated_url.GetOrigin() != gurl.GetOrigin()) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_REFUSED_STREAM, |
| base::StringPrintf( |
| "Rejected cross origin push stream %d on insecure connection", |
| associated_stream_id)); |
| return; |
| } |
| } |
| } |
| } |
| |
| // There should not be an existing pushed stream with the same path. |
| UnclaimedPushedStreamContainer::const_iterator pushed_it = |
| unclaimed_pushed_streams_.lower_bound(gurl); |
| if (pushed_it != unclaimed_pushed_streams_.end() && |
| pushed_it->first == gurl) { |
| EnqueueResetStreamFrame( |
| stream_id, request_priority, ERROR_CODE_PROTOCOL_ERROR, |
| "Received duplicate pushed stream with url: " + gurl.spec()); |
| return; |
| } |
| |
| std::unique_ptr<SpdyStream> stream( |
| new SpdyStream(SPDY_PUSH_STREAM, GetWeakPtr(), gurl, request_priority, |
| stream_initial_send_window_size_, |
| stream_max_recv_window_size_, net_log_)); |
| stream->set_stream_id(stream_id); |
| |
| // Convert RequestPriority to a SpdyPriority to send in a PRIORITY frame. |
| SpdyPriority spdy_priority = |
| ConvertRequestPriorityToSpdyPriority(request_priority); |
| SpdyStreamId dependency_id = 0; |
| bool exclusive = false; |
| priority_dependency_state_.OnStreamCreation(stream_id, spdy_priority, |
| &dependency_id, &exclusive); |
| EnqueuePriorityFrame(stream_id, dependency_id, |
| Spdy3PriorityToHttp2Weight(spdy_priority), exclusive); |
| |
| // PUSH_PROMISE arrives on associated stream. |
| associated_it->second->AddRawReceivedBytes(last_compressed_frame_len_); |
| last_compressed_frame_len_ = 0; |
| |
| UnclaimedPushedStreamContainer::const_iterator inserted_pushed_it = |
| unclaimed_pushed_streams_.insert(pushed_it, gurl, stream_id, |
| time_func_()); |
| DCHECK(inserted_pushed_it != pushed_it); |
| DeleteExpiredPushedStreams(); |
| |
| InsertActivatedStream(std::move(stream)); |
| |
| ActiveStreamMap::iterator active_it = active_streams_.find(stream_id); |
| if (active_it == active_streams_.end()) { |
| NOTREACHED(); |
| return; |
| } |
| |
| // Notify the push_delegate that a push promise has been received. |
| if (push_delegate_) { |
| push_delegate_->OnPush(base::MakeUnique<SpdyServerPushHelper>( |
| weak_factory_.GetWeakPtr(), gurl), |
| net_log_); |
| } |
| |
| active_it->second->OnPushPromiseHeadersReceived(std::move(headers)); |
| 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) { |
| unclaimed_pushed_streams_.erase(owned_stream->url()); |
| 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 there are no active streams and the socket pool is stalled, close the |
| // session to free up a socket slot. |
| if (active_streams_.empty() && created_streams_.empty() && |
| connection_->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, |
| SpdyErrorCode error_code, |
| const std::string& description) { |
| // Send the RST_STREAM frame first as CloseActiveStreamIterator() |
| // may close us. |
| 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, ERR_SPDY_PROTOCOL_ERROR); |
| } |
| |
| void SpdySession::EnqueueResetStreamFrame(SpdyStreamId stream_id, |
| RequestPriority priority, |
| SpdyErrorCode error_code, |
| const std::string& description) { |
| DCHECK_NE(stream_id, 0u); |
| |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_SEND_RST_STREAM, |
| base::Bind(&NetLogSpdySendRstStreamCallback, stream_id, |
| error_code, &description)); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<SpdySerializedFrame> rst_frame( |
| buffered_spdy_framer_->CreateRstStream(stream_id, error_code)); |
| |
| EnqueueSessionWrite(priority, RST_STREAM, std::move(rst_frame)); |
| RecordProtocolErrorHistogram(MapRstStreamStatusToProtocolError(error_code)); |
| } |
| |
| void SpdySession::EnqueuePriorityFrame(SpdyStreamId stream_id, |
| SpdyStreamId dependency_id, |
| int weight, |
| bool exclusive) { |
| net_log().AddEvent(NetLogEventType::HTTP2_STREAM_SEND_PRIORITY, |
| base::Bind(&NetLogSpdyPriorityCallback, stream_id, |
| dependency_id, weight, exclusive)); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<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, PRIORITY, |
| base::MakeUnique<SimpleBufferProducer>( |
| base::MakeUnique<SpdyBuffer>(std::move(frame))), |
| base::WeakPtr<SpdyStream>()); |
| } |
| |
| 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::Bind(&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() { |
| CHECK(in_io_loop_); |
| |
| CHECK(connection_); |
| CHECK(connection_->socket()); |
| read_state_ = READ_STATE_DO_READ_COMPLETE; |
| return connection_->socket()->Read( |
| read_buffer_.get(), kReadBufferSize, |
| base::Bind(&SpdySession::PumpReadLoop, weak_factory_.GetWeakPtr(), |
| READ_STATE_DO_READ_COMPLETE)); |
| } |
| |
| int SpdySession::DoReadComplete(int result) { |
| 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_activity_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(), |
| SpdyFramer::SPDY_NO_ERROR); |
| } |
| |
| 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::Bind(&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. |
| SpdyFrameType frame_type = DATA; |
| std::unique_ptr<SpdyBufferProducer> producer; |
| base::WeakPtr<SpdyStream> stream; |
| if (!write_queue_.Dequeue(&frame_type, &producer, &stream)) { |
| 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 == 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); |
| } |
| } |
| |
| // TODO(pkasting): Remove ScopedTracker below once crbug.com/457517 is |
| // fixed. |
| tracked_objects::ScopedTracker tracking_profile1( |
| FROM_HERE_WITH_EXPLICIT_FUNCTION("457517 SpdySession::DoWrite1")); |
| 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_, |
| buffered_spdy_framer_->GetFrameMinimumSize()); |
| in_flight_write_stream_ = stream; |
| } |
| |
| write_state_ = WRITE_STATE_DO_WRITE_COMPLETE; |
| |
| // Explicitly store in a scoped_refptr<IOBuffer> to avoid problems |
| // with Socket implementations that don't store their IOBuffer |
| // argument in a scoped_refptr<IOBuffer> (see crbug.com/232345). |
| // TODO(pkasting): Remove ScopedTracker below once crbug.com/457517 is fixed. |
| tracked_objects::ScopedTracker tracking_profile2( |
| FROM_HERE_WITH_EXPLICIT_FUNCTION("457517 SpdySession::DoWrite2")); |
| scoped_refptr<IOBuffer> write_io_buffer = |
| in_flight_write_->GetIOBufferForRemainingData(); |
| return connection_->socket()->Write( |
| write_io_buffer.get(), in_flight_write_->GetRemainingSize(), |
| base::Bind(&SpdySession::PumpWriteLoop, weak_factory_.GetWeakPtr(), |
| WRITE_STATE_DO_WRITE_COMPLETE)); |
| } |
| |
| int SpdySession::DoWriteComplete(int result) { |
| CHECK(in_io_loop_); |
| DCHECK_NE(result, ERR_IO_PENDING); |
| DCHECK_GT(in_flight_write_->GetRemainingSize(), 0u); |
| |
| last_activity_time_ = time_func_(); |
| |
| if (result < 0) { |
| DCHECK_NE(result, ERR_IO_PENDING); |
| in_flight_write_.reset(); |
| in_flight_write_frame_type_ = DATA; |
| in_flight_write_frame_size_ = 0; |
| in_flight_write_stream_.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_ = DATA; |
| in_flight_write_frame_size_ = 0; |
| in_flight_write_stream_.reset(); |
| } |
| } |
| |
| write_state_ = WRITE_STATE_DO_WRITE; |
| return OK; |
| } |
| |
| void SpdySession::SendInitialData() { |
| DCHECK(enable_sending_initial_data_); |
| |
| std::unique_ptr<SpdySerializedFrame> connection_header_prefix_frame( |
| new SpdySerializedFrame(const_cast<char*>(kHttp2ConnectionHeaderPrefix), |
| kHttp2ConnectionHeaderPrefixSize, |
| false /* take_ownership */)); |
| // Count the prefix as part of the subsequent SETTINGS frame. |
| EnqueueSessionWrite(HIGHEST, SETTINGS, |
| std::move(connection_header_prefix_frame)); |
| |
| // First, notify the server about the settings they should use when |
| // communicating with us. Only send settings that have a value different from |
| // the protocol default value. |
| SettingsMap settings_map; |
| for (auto setting : initial_settings_) { |
| if (!IsSpdySettingAtDefaultInitialValue(setting.first, setting.second)) { |
| settings_map.insert(setting); |
| } |
| } |
| SendSettings(settings_map); |
| |
| // Next, notify the server about our initial recv window size. |
| // Bump up the receive window size to the real initial value. This |
| // has to go here since the WINDOW_UPDATE frame sent by |
| // IncreaseRecvWindowSize() call uses |buffered_spdy_framer_|. |
| // This condition implies that |session_max_recv_window_size_| - |
| // |session_recv_window_size_| doesn't overflow. |
| DCHECK_GE(session_max_recv_window_size_, session_recv_window_size_); |
| DCHECK_GE(session_recv_window_size_, 0); |
| if (session_max_recv_window_size_ > session_recv_window_size_) { |
| IncreaseRecvWindowSize(session_max_recv_window_size_ - |
| session_recv_window_size_); |
| } |
| } |
| |
| void SpdySession::SendSettings(const SettingsMap& settings) { |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_SEND_SETTINGS, |
| base::Bind(&NetLogSpdySendSettingsCallback, &settings)); |
| // Create the SETTINGS frame and send it. |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<SpdySerializedFrame> settings_frame( |
| buffered_spdy_framer_->CreateSettings(settings)); |
| EnqueueSessionWrite(HIGHEST, SETTINGS, std::move(settings_frame)); |
| } |
| |
| void SpdySession::HandleSetting(uint32_t id, uint32_t value) { |
| switch (id) { |
| case SETTINGS_MAX_CONCURRENT_STREAMS: |
| max_concurrent_streams_ = |
| std::min(static_cast<size_t>(value), kMaxConcurrentStreamLimit); |
| ProcessPendingStreamRequests(); |
| break; |
| case SETTINGS_INITIAL_WINDOW_SIZE: { |
| if (value > static_cast<uint32_t>(std::numeric_limits<int32_t>::max())) { |
| net_log().AddEvent( |
| NetLogEventType::HTTP2_SESSION_INITIAL_WINDOW_SIZE_OUT_OF_RANGE, |
| NetLog::IntCallback("initial_window_size", value)); |
| return; |
| } |
| |
| // 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().AddEvent( |
| NetLogEventType::HTTP2_SESSION_UPDATE_STREAMS_SEND_WINDOW_SIZE, |
| NetLog::IntCallback("delta_window_size", delta_window_size)); |
| break; |
| } |
| } |
| } |
| |
| void SpdySession::UpdateStreamsSendWindowSize(int32_t delta_window_size) { |
| for (ActiveStreamMap::iterator it = active_streams_.begin(); |
| it != active_streams_.end(); ++it) { |
| it->second->AdjustSendWindowSize(delta_window_size); |
| } |
| |
| for (CreatedStreamSet::const_iterator it = created_streams_.begin(); |
| it != created_streams_.end(); it++) { |
| (*it)->AdjustSendWindowSize(delta_window_size); |
| } |
| } |
| |
| void SpdySession::SendPrefacePingIfNoneInFlight() { |
| if (pings_in_flight_ || !enable_ping_based_connection_checking_) |
| return; |
| |
| base::TimeTicks now = time_func_(); |
| // If there is no activity in the session, then send a preface-PING. |
| if ((now - last_activity_time_) > connection_at_risk_of_loss_time_) |
| SendPrefacePing(); |
| } |
| |
| void SpdySession::SendPrefacePing() { |
| WritePingFrame(next_ping_id_, false); |
| } |
| |
| void SpdySession::SendWindowUpdateFrame(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, kSessionFlowControlStreamId); |
| } |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_SEND_WINDOW_UPDATE, |
| base::Bind(&NetLogSpdyWindowUpdateFrameCallback, stream_id, |
| delta_window_size)); |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<SpdySerializedFrame> window_update_frame( |
| buffered_spdy_framer_->CreateWindowUpdate(stream_id, delta_window_size)); |
| EnqueueSessionWrite(priority, WINDOW_UPDATE, std::move(window_update_frame)); |
| } |
| |
| void SpdySession::WritePingFrame(SpdyPingId unique_id, bool is_ack) { |
| DCHECK(buffered_spdy_framer_.get()); |
| std::unique_ptr<SpdySerializedFrame> ping_frame( |
| buffered_spdy_framer_->CreatePingFrame(unique_id, is_ack)); |
| EnqueueSessionWrite(HIGHEST, PING, std::move(ping_frame)); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent( |
| NetLogEventType::HTTP2_SESSION_PING, |
| base::Bind(&NetLogSpdyPingCallback, unique_id, is_ack, "sent")); |
| } |
| if (!is_ack) { |
| next_ping_id_ += 2; |
| ++pings_in_flight_; |
| 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::Bind(&SpdySession::CheckPingStatus, |
| weak_factory_.GetWeakPtr(), time_func_()), |
| hung_interval_); |
| } |
| |
| void SpdySession::CheckPingStatus(base::TimeTicks last_check_time) { |
| CHECK(!in_io_loop_); |
| |
| // Check if we got a response back for all PINGs we had sent. |
| if (pings_in_flight_ == 0) { |
| check_ping_status_pending_ = false; |
| return; |
| } |
| |
| DCHECK(check_ping_status_pending_); |
| |
| base::TimeTicks now = time_func_(); |
| base::TimeDelta delay = hung_interval_ - (now - last_activity_time_); |
| |
| if (delay.InMilliseconds() < 0 || last_activity_time_ < last_check_time) { |
| DoDrainSession(ERR_SPDY_PING_FAILED, "Failed ping."); |
| return; |
| } |
| |
| // Check the status of connection after a delay. |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, base::Bind(&SpdySession::CheckPingStatus, |
| weak_factory_.GetWeakPtr(), now), |
| delay); |
| } |
| |
| SpdyStreamId SpdySession::GetNewStreamId() { |
| CHECK_LE(stream_hi_water_mark_, kLastStreamId); |
| SpdyStreamId id = stream_hi_water_mark_; |
| stream_hi_water_mark_ += 2; |
| return id; |
| } |
| |
| void SpdySession::EnqueueSessionWrite( |
| RequestPriority priority, |
| SpdyFrameType frame_type, |
| std::unique_ptr<SpdySerializedFrame> frame) { |
| DCHECK(frame_type == RST_STREAM || frame_type == SETTINGS || |
| frame_type == WINDOW_UPDATE || frame_type == PING || |
| frame_type == GOAWAY); |
| EnqueueWrite( |
| priority, frame_type, |
| std::unique_ptr<SpdyBufferProducer>(new SimpleBufferProducer( |
| std::unique_ptr<SpdyBuffer>(new SpdyBuffer(std::move(frame))))), |
| base::WeakPtr<SpdyStream>()); |
| } |
| |
| void SpdySession::EnqueueWrite(RequestPriority priority, |
| SpdyFrameType frame_type, |
| std::unique_ptr<SpdyBufferProducer> producer, |
| const base::WeakPtr<SpdyStream>& stream) { |
| if (availability_state_ == STATE_DRAINING) |
| return; |
| |
| write_queue_.Enqueue(priority, frame_type, std::move(producer), stream); |
| MaybePostWriteLoop(); |
| } |
| |
| void SpdySession::InsertCreatedStream(std::unique_ptr<SpdyStream> stream) { |
| CHECK_EQ(stream->stream_id(), 0u); |
| CHECK(created_streams_.find(stream.get()) == created_streams_.end()); |
| created_streams_.insert(stream.release()); |
| } |
| |
| std::unique_ptr<SpdyStream> SpdySession::ActivateCreatedStream( |
| SpdyStream* stream) { |
| CHECK_EQ(stream->stream_id(), 0u); |
| CHECK(created_streams_.find(stream) != created_streams_.end()); |
| stream->set_stream_id(GetNewStreamId()); |
| std::unique_ptr<SpdyStream> owned_stream(stream); |
| created_streams_.erase(stream); |
| return owned_stream; |
| } |
| |
| void SpdySession::InsertActivatedStream(std::unique_ptr<SpdyStream> stream) { |
| 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->GetWeakPtr()); |
| stream->OnClose(status); |
| |
| if (availability_state_ == STATE_AVAILABLE) { |
| ProcessPendingStreamRequests(); |
| } |
| } |
| |
| SpdyStreamId SpdySession::GetStreamIdForPush(const GURL& url) { |
| UnclaimedPushedStreamContainer::const_iterator unclaimed_it = |
| unclaimed_pushed_streams_.find(url); |
| if (unclaimed_it == unclaimed_pushed_streams_.end()) |
| return 0; |
| return unclaimed_it->second.stream_id; |
| } |
| |
| SpdyStream* SpdySession::GetActivePushStream(const GURL& url) { |
| UnclaimedPushedStreamContainer::const_iterator unclaimed_it = |
| unclaimed_pushed_streams_.find(url); |
| if (unclaimed_it == unclaimed_pushed_streams_.end()) |
| return nullptr; |
| |
| SpdyStreamId stream_id = unclaimed_it->second.stream_id; |
| unclaimed_pushed_streams_.erase(unclaimed_it); |
| |
| ActiveStreamMap::iterator active_it = active_streams_.find(stream_id); |
| if (active_it == active_streams_.end()) { |
| NOTREACHED(); |
| return nullptr; |
| } |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_STREAM_ADOPTED_PUSH_STREAM, |
| base::Bind(&NetLogSpdyAdoptedPushStreamCallback, |
| active_it->second->stream_id(), &url)); |
| return active_it->second; |
| } |
| |
| 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_); |
| } |
| |
| 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); |
| } |
| } |
| |
| 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(unclaimed_pushed_streams_.empty()); |
| } |
| |
| void SpdySession::DoDrainSession(Error err, const std::string& description) { |
| if (availability_state_ == STATE_DRAINING) { |
| return; |
| } |
| MakeUnavailable(); |
| |
| // Mark host_port_pair requiring HTTP/1.1 for subsequent connections. |
| if (err == ERR_HTTP_1_1_REQUIRED) { |
| http_server_properties_->SetHTTP11Required(host_port_pair()); |
| } |
| |
| // 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. |
| SpdyGoAwayIR goaway_ir(last_accepted_push_stream_id_, |
| MapNetErrorToGoAwayStatus(err), description); |
| EnqueueSessionWrite( |
| HIGHEST, GOAWAY, |
| std::unique_ptr<SpdySerializedFrame>(new SpdySerializedFrame( |
| buffered_spdy_framer_->SerializeFrame(goaway_ir)))); |
| } |
| |
| availability_state_ = STATE_DRAINING; |
| error_on_close_ = err; |
| |
| net_log_.AddEvent( |
| NetLogEventType::HTTP2_SESSION_CLOSE, |
| base::Bind(&NetLogSpdySessionCloseCallback, err, &description)); |
| |
| UMA_HISTOGRAM_SPARSE_SLOWLY("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); |
| std::string description = |
| base::StringPrintf("ABANDONED (stream_id=%d): ", stream->stream_id()) + |
| stream->url().spec(); |
| stream->LogStreamError(status, description); |
| // 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::DeleteExpiredPushedStreams() { |
| if (unclaimed_pushed_streams_.empty()) |
| return; |
| |
| // Check that adequate time has elapsed since the last sweep. |
| if (time_func_() < next_unclaimed_push_stream_sweep_time_) |
| return; |
| |
| // Gather old streams to delete. |
| base::TimeTicks minimum_freshness = |
| time_func_() - |
| base::TimeDelta::FromSeconds(kMinPushedStreamLifetimeSeconds); |
| std::vector<SpdyStreamId> streams_to_close; |
| for (UnclaimedPushedStreamContainer::const_iterator it = |
| unclaimed_pushed_streams_.begin(); |
| it != unclaimed_pushed_streams_.end(); ++it) { |
| if (minimum_freshness > it->second.creation_time) |
| streams_to_close.push_back(it->second.stream_id); |
| } |
| |
| for (std::vector<SpdyStreamId>::const_iterator to_close_it = |
| streams_to_close.begin(); |
| to_close_it != streams_to_close.end(); ++to_close_it) { |
| ActiveStreamMap::iterator active_it = active_streams_.find(*to_close_it); |
| if (active_it == active_streams_.end()) |
| continue; |
| bytes_pushed_and_unclaimed_count_ += active_it->second->recv_bytes(); |
| |
| LogAbandonedActiveStream(active_it, ERR_INVALID_SPDY_STREAM); |
| // CloseActiveStreamIterator() will remove the stream from |
| // |unclaimed_pushed_streams_|. |
| ResetStreamIterator(active_it, ERROR_CODE_REFUSED_STREAM, |
| "Stream not claimed."); |
| } |
| |
| next_unclaimed_push_stream_sweep_time_ = |
| time_func_() + |
| base::TimeDelta::FromSeconds(kMinPushedStreamLifetimeSeconds); |
| } |
| |
| void SpdySession::OnError(SpdyFramer::SpdyFramerError spdy_framer_error) { |
| CHECK(in_io_loop_); |
| |
| RecordProtocolErrorHistogram( |
| MapFramerErrorToProtocolError(spdy_framer_error)); |
| std::string description = base::StringPrintf( |
| "Framer error: %d (%s).", spdy_framer_error, |
| SpdyFramer::SpdyFramerErrorToString(spdy_framer_error)); |
| DoDrainSession(MapFramerErrorToNetError(spdy_framer_error), description); |
| } |
| |
| void SpdySession::OnStreamError(SpdyStreamId stream_id, |
| const std::string& description) { |
| CHECK(in_io_loop_); |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| // We still want to send a frame to reset the stream even if we |
| // don't know anything about it. |
| EnqueueResetStreamFrame(stream_id, IDLE, ERROR_CODE_PROTOCOL_ERROR, |
| description); |
| return; |
| } |
| |
| ResetStreamIterator(it, ERROR_CODE_PROTOCOL_ERROR, description); |
| } |
| |
| void SpdySession::OnPing(SpdyPingId unique_id, bool is_ack) { |
| CHECK(in_io_loop_); |
| |
| net_log_.AddEvent( |
| NetLogEventType::HTTP2_SESSION_PING, |
| base::Bind(&NetLogSpdyPingCallback, unique_id, is_ack, "received")); |
| |
| // Send response to a PING from server. |
| if (!is_ack) { |
| WritePingFrame(unique_id, true); |
| return; |
| } |
| |
| --pings_in_flight_; |
| if (pings_in_flight_ < 0) { |
| RecordProtocolErrorHistogram(PROTOCOL_ERROR_UNEXPECTED_PING); |
| DoDrainSession(ERR_SPDY_PROTOCOL_ERROR, "pings_in_flight_ is < 0."); |
| pings_in_flight_ = 0; |
| return; |
| } |
| |
| if (pings_in_flight_ > 0) |
| return; |
| |
| // We will record RTT in histogram when there are no more client sent |
| // pings_in_flight_. |
| RecordPingRTTHistogram(time_func_() - last_ping_sent_time_); |
| } |
| |
| void SpdySession::OnRstStream(SpdyStreamId stream_id, |
| SpdyErrorCode error_code) { |
| CHECK(in_io_loop_); |
| |
| net_log().AddEvent( |
| NetLogEventType::HTTP2_SESSION_RECV_RST_STREAM, |
| base::Bind(&NetLogSpdyRecvRstStreamCallback, stream_id, error_code)); |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| // NOTE: it may just be that the stream was cancelled. |
| LOG(WARNING) << "Received RST for invalid stream" << stream_id; |
| return; |
| } |
| |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| |
| if (error_code == ERROR_CODE_NO_ERROR) { |
| CloseActiveStreamIterator(it, ERR_SPDY_RST_STREAM_NO_ERROR_RECEIVED); |
| } else if (error_code == ERROR_CODE_REFUSED_STREAM) { |
| CloseActiveStreamIterator(it, ERR_SPDY_SERVER_REFUSED_STREAM); |
| } else if (error_code == ERROR_CODE_HTTP_1_1_REQUIRED) { |
| // TODO(bnc): Record histogram with number of open streams capped at 50. |
| it->second->LogStreamError( |
| ERR_HTTP_1_1_REQUIRED, |
| base::StringPrintf( |
| "SPDY session closed because of stream with error_code: %u", |
| error_code)); |
| DoDrainSession(ERR_HTTP_1_1_REQUIRED, "HTTP_1_1_REQUIRED for stream."); |
| } else { |
| RecordProtocolErrorHistogram( |
| PROTOCOL_ERROR_RST_STREAM_FOR_NON_ACTIVE_STREAM); |
| it->second->LogStreamError( |
| ERR_SPDY_PROTOCOL_ERROR, |
| base::StringPrintf("SPDY stream closed with error_code: %u", |
| error_code)); |
| // TODO(mbelshe): Map from Spdy-protocol errors to something sensical. |
| // For now, it doesn't matter much - it is a protocol error. |
| CloseActiveStreamIterator(it, ERR_SPDY_PROTOCOL_ERROR); |
| } |
| } |
| |
| void SpdySession::OnGoAway(SpdyStreamId last_accepted_stream_id, |
| SpdyErrorCode error_code, |
| base::StringPiece debug_data) { |
| CHECK(in_io_loop_); |
| |
| // TODO(jgraettinger): UMA histogram on |error_code|. |
| |
| net_log_.AddEvent( |
| NetLogEventType::HTTP2_SESSION_RECV_GOAWAY, |
| base::Bind(&NetLogSpdyRecvGoAwayCallback, last_accepted_stream_id, |
| active_streams_.size(), unclaimed_pushed_streams_.size(), |
| error_code, debug_data)); |
| MakeUnavailable(); |
| if (error_code == ERROR_CODE_HTTP_1_1_REQUIRED) { |
| // TODO(bnc): Record histogram with number of open streams capped at 50. |
| DoDrainSession(ERR_HTTP_1_1_REQUIRED, "HTTP_1_1_REQUIRED for stream."); |
| } else { |
| StartGoingAway(last_accepted_stream_id, ERR_ABORTED); |
| } |
| // This is to handle the case when we already don't have any active |
| // streams (i.e., StartGoingAway() did nothing). Otherwise, we have |
| // active streams and so the last one being closed will finish the |
| // going away process (see DeleteStream()). |
| MaybeFinishGoingAway(); |
| } |
| |
| void SpdySession::OnDataFrameHeader(SpdyStreamId stream_id, |
| size_t length, |
| bool fin) { |
| CHECK(in_io_loop_); |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| |
| // By the time data comes in, the stream may already be inactive. |
| if (it == active_streams_.end()) |
| return; |
| |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| DCHECK(buffered_spdy_framer_); |
| size_t header_len = buffered_spdy_framer_->GetDataFrameMinimumSize(); |
| stream->AddRawReceivedBytes(header_len); |
| } |
| |
| void SpdySession::OnStreamFrameData(SpdyStreamId stream_id, |
| const char* data, |
| size_t len) { |
| CHECK(in_io_loop_); |
| DCHECK_LT(len, 1u << 24); |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent( |
| NetLogEventType::HTTP2_SESSION_RECV_DATA, |
| base::Bind(&NetLogSpdyDataCallback, stream_id, len, false)); |
| } |
| |
| // Build the buffer as early as possible so that we go through the |
| // session flow control checks and update |
| // |unacked_recv_window_bytes_| properly even when the stream is |
| // inactive (since the other side has still reduced its session send |
| // window). |
| std::unique_ptr<SpdyBuffer> buffer; |
| if (data) { |
| DCHECK_GT(len, 0u); |
| CHECK_LE(len, static_cast<size_t>(kReadBufferSize)); |
| buffer.reset(new SpdyBuffer(data, len)); |
| |
| DecreaseRecvWindowSize(static_cast<int32_t>(len)); |
| buffer->AddConsumeCallback(base::Bind(&SpdySession::OnReadBufferConsumed, |
| weak_factory_.GetWeakPtr())); |
| } else { |
| DCHECK_EQ(len, 0u); |
| } |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| |
| // By the time data comes in, the stream may already be inactive. |
| if (it == active_streams_.end()) |
| return; |
| |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| stream->AddRawReceivedBytes(len); |
| stream->OnDataReceived(std::move(buffer)); |
| } |
| |
| void SpdySession::OnStreamEnd(SpdyStreamId stream_id) { |
| CHECK(in_io_loop_); |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_RECV_DATA, |
| base::Bind(&NetLogSpdyDataCallback, stream_id, 0, true)); |
| } |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| // By the time data comes in, the stream may already be inactive. |
| if (it == active_streams_.end()) |
| return; |
| |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| stream->OnDataReceived(std::unique_ptr<SpdyBuffer>()); |
| } |
| |
| void SpdySession::OnStreamPadding(SpdyStreamId stream_id, size_t len) { |
| CHECK(in_io_loop_); |
| |
| // Decrease window size because padding bytes are received. |
| // Increase window size because padding bytes are consumed (by discarding). |
| // Net result: |session_unacked_recv_window_bytes_| increases by |len|, |
| // |session_recv_window_size_| does not change. |
| DecreaseRecvWindowSize(static_cast<int32_t>(len)); |
| IncreaseRecvWindowSize(static_cast<int32_t>(len)); |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) |
| return; |
| it->second->OnPaddingConsumed(len); |
| } |
| |
| void SpdySession::OnSettings() { |
| CHECK(in_io_loop_); |
| |
| if (net_log_.IsCapturing()) { |
| net_log_.AddEvent( |
| NetLogEventType::HTTP2_SESSION_RECV_SETTINGS, |
| base::Bind(&NetLogSpdyRecvSettingsCallback, host_port_pair())); |
| } |
| |
| // Send an acknowledgment of the setting. |
| SpdySettingsIR settings_ir; |
| settings_ir.set_is_ack(true); |
| EnqueueSessionWrite( |
| HIGHEST, SETTINGS, |
| std::unique_ptr<SpdySerializedFrame>(new SpdySerializedFrame( |
| buffered_spdy_framer_->SerializeFrame(settings_ir)))); |
| } |
| |
| void SpdySession::OnSetting(SpdySettingsIds id, uint32_t value) { |
| CHECK(in_io_loop_); |
| |
| HandleSetting(id, value); |
| |
| // Log the setting. |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_RECV_SETTING, |
| base::Bind(&NetLogSpdyRecvSettingCallback, id, value)); |
| } |
| |
| void SpdySession::OnWindowUpdate(SpdyStreamId stream_id, |
| int delta_window_size) { |
| CHECK(in_io_loop_); |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_RECV_WINDOW_UPDATE, |
| base::Bind(&NetLogSpdyWindowUpdateFrameCallback, stream_id, |
| delta_window_size)); |
| |
| if (stream_id == kSessionFlowControlStreamId) { |
| // WINDOW_UPDATE for the session. |
| if (delta_window_size < 1) { |
| RecordProtocolErrorHistogram(PROTOCOL_ERROR_INVALID_WINDOW_UPDATE_SIZE); |
| DoDrainSession( |
| ERR_SPDY_PROTOCOL_ERROR, |
| "Received WINDOW_UPDATE with an invalid delta_window_size " + |
| base::IntToString(delta_window_size)); |
| return; |
| } |
| |
| IncreaseSendWindowSize(delta_window_size); |
| } else { |
| // WINDOW_UPDATE for a stream. |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| |
| if (it == active_streams_.end()) { |
| // NOTE: it may just be that the stream was cancelled. |
| LOG(WARNING) << "Received WINDOW_UPDATE for invalid stream " << stream_id; |
| return; |
| } |
| |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| if (delta_window_size < 1) { |
| ResetStreamIterator( |
| it, ERROR_CODE_FLOW_CONTROL_ERROR, |
| base::StringPrintf("Received WINDOW_UPDATE with an invalid " |
| "delta_window_size %d", |
| delta_window_size)); |
| return; |
| } |
| |
| CHECK_EQ(it->second->stream_id(), stream_id); |
| it->second->IncreaseSendWindowSize(delta_window_size); |
| } |
| } |
| |
| void SpdySession::OnPushPromise(SpdyStreamId stream_id, |
| SpdyStreamId promised_stream_id, |
| SpdyHeaderBlock headers) { |
| CHECK(in_io_loop_); |
| |
| if (net_log_.IsCapturing()) { |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_RECV_PUSH_PROMISE, |
| base::Bind(&NetLogSpdyPushPromiseReceivedCallback, |
| &headers, stream_id, promised_stream_id)); |
| } |
| |
| TryCreatePushStream(promised_stream_id, stream_id, std::move(headers)); |
| } |
| |
| void SpdySession::OnHeaders(SpdyStreamId stream_id, |
| bool has_priority, |
| int weight, |
| SpdyStreamId parent_stream_id, |
| bool exclusive, |
| bool fin, |
| SpdyHeaderBlock headers) { |
| CHECK(in_io_loop_); |
| |
| if (net_log().IsCapturing()) { |
| net_log().AddEvent(NetLogEventType::HTTP2_SESSION_RECV_HEADERS, |
| base::Bind(&NetLogSpdyHeadersReceivedCallback, &headers, |
| fin, stream_id)); |
| } |
| |
| ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) { |
| // NOTE: it may just be that the stream was cancelled. |
| LOG(WARNING) << "Received HEADERS for invalid stream " << stream_id; |
| return; |
| } |
| |
| SpdyStream* stream = it->second; |
| CHECK_EQ(stream->stream_id(), stream_id); |
| |
| stream->AddRawReceivedBytes(last_compressed_frame_len_); |
| last_compressed_frame_len_ = 0; |
| |
| if (it->second->IsReservedRemote()) { |
| DCHECK_EQ(SPDY_PUSH_STREAM, stream->type()); |
| if (max_concurrent_pushed_streams_ && |
| num_active_pushed_streams_ >= max_concurrent_pushed_streams_) { |
| ResetStream(stream_id, ERROR_CODE_REFUSED_STREAM, |
| "Stream concurrency limit reached."); |
| return; |
| } |
| |
| // Will be balanced in DeleteStream. |
| num_active_pushed_streams_++; |
| } |
| |
| base::Time response_time = base::Time::Now(); |
| base::TimeTicks recv_first_byte_time = time_func_(); |
| // May invalidate |stream|. |
| stream->OnHeadersReceived(headers, response_time, recv_first_byte_time); |
| } |
| |
| void SpdySession::OnAltSvc( |
| SpdyStreamId stream_id, |
| base::StringPiece origin, |
| const SpdyAltSvcWireFormat::AlternativeServiceVector& altsvc_vector) { |
| if (!is_secure_) |
| return; |
| |
| url::SchemeHostPort scheme_host_port; |
| if (stream_id == 0) { |
| if (origin.empty()) |
| return; |
| const GURL gurl(origin); |
| if (!gurl.SchemeIs("https")) |
| return; |
| SSLInfo ssl_info; |
| if (!GetSSLInfo(&ssl_info)) |
| return; |
| if (!CanPool(transport_security_state_, ssl_info, host_port_pair().host(), |
| gurl.host())) { |
| return; |
| } |
| scheme_host_port = url::SchemeHostPort(gurl); |
| } else { |
| if (!origin.empty()) |
| return; |
| const ActiveStreamMap::iterator it = active_streams_.find(stream_id); |
| if (it == active_streams_.end()) |
| return; |
| const GURL& gurl(it->second->url()); |
| if (!gurl.SchemeIs("https")) |
| return; |
| scheme_host_port = url::SchemeHostPort(gurl); |
| } |
| |
| AlternativeServiceInfoVector alternative_service_info_vector; |
| alternative_service_info_vector.reserve(altsvc_vector.size()); |
| const base::Time now(base::Time::Now()); |
| for (const SpdyAltSvcWireFormat::AlternativeService& altsvc : altsvc_vector) { |
| const NextProto protocol = NextProtoFromString(altsvc.protocol_id); |
| if (protocol == kProtoUnknown) |
| continue; |
| const AlternativeService alternative_service(protocol, altsvc.host, |
| altsvc.port); |
| const base::Time expiration = |
| now + base::TimeDelta::FromSeconds(altsvc.max_age); |
| alternative_service_info_vector.push_back( |
| AlternativeServiceInfo(alternative_service, expiration)); |
| } |
| http_server_properties_->SetAlternativeServices( |
| scheme_host_port, alternative_service_info_vector); |
| } |
| |
| bool SpdySession::OnUnknownFrame(SpdyStreamId stream_id, uint8_t frame_type) { |
| // Validate stream id. |
| // Was the frame sent on a stream id that has not been used in this session? |
| if (stream_id % 2 == 1 && stream_id > stream_hi_water_mark_) |
| return false; |
| |
| if (stream_id % 2 == 0 && stream_id > last_accepted_push_stream_id_) |
| return false; |
| |
| return true; |
| } |
| |
| void SpdySession::OnSendCompressedFrame(SpdyStreamId stream_id, |
| SpdyFrameType type, |
| size_t payload_len, |
| size_t frame_len) { |
| if (type != HEADERS) { |
| return; |
| } |
| |
| DCHECK(buffered_spdy_framer_.get()); |
| size_t compressed_len = |
| frame_len - buffered_spdy_framer_->GetFrameMinimumSize(); |
| |
| if (payload_len) { |
| // Make sure we avoid early decimal truncation. |
| int compression_pct = 100 - (100 * compressed_len) / payload_len; |
| UMA_HISTOGRAM_PERCENTAGE("Net.SpdyHeadersCompressionPercentage", |
| compression_pct); |
| } |
| } |
| |
| void SpdySession::OnReceiveCompressedFrame(SpdyStreamId stream_id, |
| SpdyFrameType type, |
| size_t frame_len) { |
| last_compressed_frame_len_ = frame_len; |
| } |
| |
| void SpdySession::OnWriteBufferConsumed( |
| size_t frame_payload_size, |
| size_t consume_size, |
| SpdyBuffer::ConsumeSource consume_source) { |
| // We can be called with |in_io_loop_| set if a write SpdyBuffer is |
| // deleted (e.g., a stream is closed due to incoming data). |
| if (consume_source == SpdyBuffer::DISCARD) { |
| // If we're discarding a frame or part of it, increase the send |
| // window by the number of discarded bytes. (Although if we're |
| // discarding part of a frame, it's probably because of a write |
| // error and we'll be tearing down the session soon.) |
| int remaining_payload_bytes = std::min(consume_size, frame_payload_size); |
| DCHECK_GT(remaining_payload_bytes, 0); |
| IncreaseSendWindowSize(remaining_payload_bytes); |
| } |
| // For consumed bytes, the send window is increased when we receive |
| // a WINDOW_UPDATE frame. |
| } |
| |
| void SpdySession::IncreaseSendWindowSize(int delta_window_size) { |
| // We can be called with |in_io_loop_| set if a SpdyBuffer is |
| // deleted (e.g., a stream is closed due to incoming data). |
| DCHECK_GE(delta_window_size, 1); |
| |
| // Check for overflow. |
| int32_t max_delta_window_size = |
| std::numeric_limits<int32_t>::max() - session_send_window_size_; |
| if (delta_window_size > max_delta_window_size) { |
| RecordProtocolErrorHistogram(PROTOCOL_ERROR_INVALID_WINDOW_UPDATE_SIZE); |
| DoDrainSession( |
| ERR_SPDY_PROTOCOL_ERROR, |
| "Received WINDOW_UPDATE [delta: " + |
| base::IntToString(delta_window_size) + |
| "] for session overflows session_send_window_size_ [current: " + |
| base::IntToString(session_send_window_size_) + "]"); |
| return; |
| } |
| |
| session_send_window_size_ += delta_window_size; |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_UPDATE_SEND_WINDOW, |
| base::Bind(&NetLogSpdySessionWindowUpdateCallback, |
| delta_window_size, session_send_window_size_)); |
| |
| DCHECK(!IsSendStalled()); |
| ResumeSendStalledStreams(); |
| } |
| |
| void SpdySession::DecreaseSendWindowSize(int32_t delta_window_size) { |
| // We only call this method when sending a frame. Therefore, |
| // |delta_window_size| should be within the valid frame size range. |
| DCHECK_GE(delta_window_size, 1); |
| DCHECK_LE(delta_window_size, kMaxSpdyFrameChunkSize); |
| |
| // |send_window_size_| should have been at least |delta_window_size| for |
| // this call to happen. |
| DCHECK_GE(session_send_window_size_, delta_window_size); |
| |
| session_send_window_size_ -= delta_window_size; |
| |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_UPDATE_SEND_WINDOW, |
| base::Bind(&NetLogSpdySessionWindowUpdateCallback, |
| -delta_window_size, session_send_window_size_)); |
| } |
| |
| void SpdySession::OnReadBufferConsumed( |
| size_t consume_size, |
| SpdyBuffer::ConsumeSource consume_source) { |
| // We can be called with |in_io_loop_| set if a read SpdyBuffer is |
| // deleted (e.g., discarded by a SpdyReadQueue). |
| DCHECK_GE(consume_size, 1u); |
| DCHECK_LE(consume_size, |
| static_cast<size_t>(std::numeric_limits<int32_t>::max())); |
| |
| IncreaseRecvWindowSize(static_cast<int32_t>(consume_size)); |
| } |
| |
| void SpdySession::IncreaseRecvWindowSize(int32_t delta_window_size) { |
| DCHECK_GE(session_unacked_recv_window_bytes_, 0); |
| DCHECK_GE(session_recv_window_size_, session_unacked_recv_window_bytes_); |
| DCHECK_GE(delta_window_size, 1); |
| // Check for overflow. |
| DCHECK_LE(delta_window_size, |
| std::numeric_limits<int32_t>::max() - session_recv_window_size_); |
| |
| session_recv_window_size_ += delta_window_size; |
| net_log_.AddEvent(NetLogEventType::HTTP2_STREAM_UPDATE_RECV_WINDOW, |
| base::Bind(&NetLogSpdySessionWindowUpdateCallback, |
| delta_window_size, session_recv_window_size_)); |
| |
| session_unacked_recv_window_bytes_ += delta_window_size; |
| if (session_unacked_recv_window_bytes_ > session_max_recv_window_size_ / 2) { |
| SendWindowUpdateFrame(kSessionFlowControlStreamId, |
| session_unacked_recv_window_bytes_, HIGHEST); |
| session_unacked_recv_window_bytes_ = 0; |
| } |
| } |
| |
| void SpdySession::DecreaseRecvWindowSize(int32_t delta_window_size) { |
| CHECK(in_io_loop_); |
| DCHECK_GE(delta_window_size, 1); |
| |
| // The receiving window size as the peer knows it is |
| // |session_recv_window_size_ - session_unacked_recv_window_bytes_|, if more |
| // data are sent by the peer, that means that the receive window is not being |
| // respected. |
| if (delta_window_size > |
| session_recv_window_size_ - session_unacked_recv_window_bytes_) { |
| RecordProtocolErrorHistogram(PROTOCOL_ERROR_RECEIVE_WINDOW_VIOLATION); |
| DoDrainSession( |
| ERR_SPDY_FLOW_CONTROL_ERROR, |
| "delta_window_size is " + base::IntToString(delta_window_size) + |
| " in DecreaseRecvWindowSize, which is larger than the receive " + |
| "window size of " + base::IntToString(session_recv_window_size_)); |
| return; |
| } |
| |
| session_recv_window_size_ -= delta_window_size; |
| net_log_.AddEvent(NetLogEventType::HTTP2_SESSION_UPDATE_RECV_WINDOW, |
| base::Bind(&NetLogSpdySessionWindowUpdateCallback, |
| -delta_window_size, session_recv_window_size_)); |
| } |
| |
| void SpdySession::QueueSendStalledStream(const SpdyStream& stream) { |
| DCHECK(stream.send_stalled_by_flow_control()); |
| RequestPriority priority = stream.priority(); |
| CHECK_GE(priority, MINIMUM_PRIORITY); |
| CHECK_LE(priority, MAXIMUM_PRIORITY); |
| stream_send_unstall_queue_[priority].push_back(stream.stream_id()); |
| } |
| |
| void SpdySession::ResumeSendStalledStreams() { |
| // We don't have to worry about new streams being queued, since |
| // doing so would cause IsSendStalled() to return true. But we do |
| // have to worry about streams being closed, as well as ourselves |
| // being closed. |
| |
| while (!IsSendStalled()) { |
| size_t old_size = 0; |
| #if DCHECK_IS_ON() |
| old_size = GetTotalSize(stream_send_unstall_queue_); |
| #endif |
| |
| SpdyStreamId stream_id = PopStreamToPossiblyResume(); |
| if (stream_id == 0) |
| break; |
| ActiveStreamMap::const_iterator it = active_streams_.find(stream_id); |
| // The stream may actually still be send-stalled after this (due |
| // to its own send window) but that's okay -- it'll then be |
| // resumed once its send window increases. |
| if (it != active_streams_.end()) |
| it->second->PossiblyResumeIfSendStalled(); |
| |
| // The size should decrease unless we got send-stalled again. |
| if (!IsSendStalled()) |
| DCHECK_LT(GetTotalSize(stream_send_unstall_queue_), old_size); |
| } |
| } |
| |
| SpdyStreamId SpdySession::PopStreamToPossiblyResume() { |
| for (int i = MAXIMUM_PRIORITY; i >= MINIMUM_PRIORITY; --i) { |
| std::deque<SpdyStreamId>* queue = &stream_send_unstall_queue_[i]; |
| if (!queue->empty()) { |
| SpdyStreamId stream_id = queue->front(); |
| queue->pop_front(); |
| return stream_id; |
| } |
| } |
| return 0; |
| } |
| |
| } // namespace net |