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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "net/quic/core/quic_session.h" | 5 #include "net/quic/core/quic_session.h" |
| 6 | 6 |
| 7 #include "base/stl_util.h" | |
| 8 #include "net/quic/core/crypto/proof_verifier.h" | 7 #include "net/quic/core/crypto/proof_verifier.h" |
| 9 #include "net/quic/core/quic_connection.h" | 8 #include "net/quic/core/quic_connection.h" |
| 10 #include "net/quic/core/quic_flags.h" | 9 #include "net/quic/core/quic_flags.h" |
| 11 #include "net/quic/core/quic_flow_controller.h" | 10 #include "net/quic/core/quic_flow_controller.h" |
| 12 #include "net/quic/platform/api/quic_bug_tracker.h" | 11 #include "net/quic/platform/api/quic_bug_tracker.h" |
| 13 #include "net/quic/platform/api/quic_logging.h" | 12 #include "net/quic/platform/api/quic_logging.h" |
| 13 #include "net/quic/platform/api/quic_map_util.h" |
| 14 #include "net/quic/platform/api/quic_str_cat.h" | 14 #include "net/quic/platform/api/quic_str_cat.h" |
| 15 | 15 |
| 16 using base::StringPiece; | 16 using base::StringPiece; |
| 17 using std::string; | 17 using std::string; |
| 18 | 18 |
| 19 namespace net { | 19 namespace net { |
| 20 | 20 |
| 21 #define ENDPOINT \ | 21 #define ENDPOINT \ |
| 22 (perspective() == Perspective::IS_SERVER ? "Server: " : " Client: ") | 22 (perspective() == Perspective::IS_SERVER ? "Server: " : " Client: ") |
| 23 | 23 |
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| 76 if (frame.fin) { | 76 if (frame.fin) { |
| 77 QuicStreamOffset final_byte_offset = frame.offset + frame.data_length; | 77 QuicStreamOffset final_byte_offset = frame.offset + frame.data_length; |
| 78 UpdateFlowControlOnFinalReceivedByteOffset(stream_id, final_byte_offset); | 78 UpdateFlowControlOnFinalReceivedByteOffset(stream_id, final_byte_offset); |
| 79 } | 79 } |
| 80 return; | 80 return; |
| 81 } | 81 } |
| 82 stream->OnStreamFrame(frame); | 82 stream->OnStreamFrame(frame); |
| 83 } | 83 } |
| 84 | 84 |
| 85 void QuicSession::OnRstStream(const QuicRstStreamFrame& frame) { | 85 void QuicSession::OnRstStream(const QuicRstStreamFrame& frame) { |
| 86 if (base::ContainsKey(static_stream_map_, frame.stream_id)) { | 86 if (QuicContainsKey(static_stream_map_, frame.stream_id)) { |
| 87 connection()->CloseConnection( | 87 connection()->CloseConnection( |
| 88 QUIC_INVALID_STREAM_ID, "Attempt to reset a static stream", | 88 QUIC_INVALID_STREAM_ID, "Attempt to reset a static stream", |
| 89 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET); | 89 ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET); |
| 90 return; | 90 return; |
| 91 } | 91 } |
| 92 | 92 |
| 93 QuicStream* stream = GetOrCreateDynamicStream(frame.stream_id); | 93 QuicStream* stream = GetOrCreateDynamicStream(frame.stream_id); |
| 94 if (!stream) { | 94 if (!stream) { |
| 95 HandleRstOnValidNonexistentStream(frame); | 95 HandleRstOnValidNonexistentStream(frame); |
| 96 return; // Errors are handled by GetOrCreateStream. | 96 return; // Errors are handled by GetOrCreateStream. |
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| 304 } | 304 } |
| 305 QuicConsumedData data = connection_->SendStreamData(id, iov, offset, fin, | 305 QuicConsumedData data = connection_->SendStreamData(id, iov, offset, fin, |
| 306 std::move(ack_listener)); | 306 std::move(ack_listener)); |
| 307 write_blocked_streams_.UpdateBytesForStream(id, data.bytes_consumed); | 307 write_blocked_streams_.UpdateBytesForStream(id, data.bytes_consumed); |
| 308 return data; | 308 return data; |
| 309 } | 309 } |
| 310 | 310 |
| 311 void QuicSession::SendRstStream(QuicStreamId id, | 311 void QuicSession::SendRstStream(QuicStreamId id, |
| 312 QuicRstStreamErrorCode error, | 312 QuicRstStreamErrorCode error, |
| 313 QuicStreamOffset bytes_written) { | 313 QuicStreamOffset bytes_written) { |
| 314 if (base::ContainsKey(static_stream_map_, id)) { | 314 if (QuicContainsKey(static_stream_map_, id)) { |
| 315 QUIC_BUG << "Cannot send RST for a static stream with ID " << id; | 315 QUIC_BUG << "Cannot send RST for a static stream with ID " << id; |
| 316 return; | 316 return; |
| 317 } | 317 } |
| 318 | 318 |
| 319 if (connection()->connected()) { | 319 if (connection()->connected()) { |
| 320 // Only send a RST_STREAM frame if still connected. | 320 // Only send a RST_STREAM frame if still connected. |
| 321 connection_->SendRstStream(id, error, bytes_written); | 321 connection_->SendRstStream(id, error, bytes_written); |
| 322 } | 322 } |
| 323 CloseStreamInner(id, true); | 323 CloseStreamInner(id, true); |
| 324 } | 324 } |
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| 617 const CryptoHandshakeMessage& /*message*/) {} | 617 const CryptoHandshakeMessage& /*message*/) {} |
| 618 | 618 |
| 619 QuicConfig* QuicSession::config() { | 619 QuicConfig* QuicSession::config() { |
| 620 return &config_; | 620 return &config_; |
| 621 } | 621 } |
| 622 | 622 |
| 623 void QuicSession::ActivateStream(std::unique_ptr<QuicStream> stream) { | 623 void QuicSession::ActivateStream(std::unique_ptr<QuicStream> stream) { |
| 624 QuicStreamId stream_id = stream->id(); | 624 QuicStreamId stream_id = stream->id(); |
| 625 QUIC_DLOG(INFO) << ENDPOINT << "num_streams: " << dynamic_stream_map_.size() | 625 QUIC_DLOG(INFO) << ENDPOINT << "num_streams: " << dynamic_stream_map_.size() |
| 626 << ". activating " << stream_id; | 626 << ". activating " << stream_id; |
| 627 DCHECK(!base::ContainsKey(dynamic_stream_map_, stream_id)); | 627 DCHECK(!QuicContainsKey(dynamic_stream_map_, stream_id)); |
| 628 DCHECK(!base::ContainsKey(static_stream_map_, stream_id)); | 628 DCHECK(!QuicContainsKey(static_stream_map_, stream_id)); |
| 629 dynamic_stream_map_[stream_id] = std::move(stream); | 629 dynamic_stream_map_[stream_id] = std::move(stream); |
| 630 if (IsIncomingStream(stream_id)) { | 630 if (IsIncomingStream(stream_id)) { |
| 631 ++num_dynamic_incoming_streams_; | 631 ++num_dynamic_incoming_streams_; |
| 632 } | 632 } |
| 633 // Increase the number of streams being emulated when a new one is opened. | 633 // Increase the number of streams being emulated when a new one is opened. |
| 634 connection_->SetNumOpenStreams(dynamic_stream_map_.size()); | 634 connection_->SetNumOpenStreams(dynamic_stream_map_.size()); |
| 635 } | 635 } |
| 636 | 636 |
| 637 QuicStreamId QuicSession::GetNextOutgoingStreamId() { | 637 QuicStreamId QuicSession::GetNextOutgoingStreamId() { |
| 638 QuicStreamId id = next_outgoing_stream_id_; | 638 QuicStreamId id = next_outgoing_stream_id_; |
| 639 next_outgoing_stream_id_ += 2; | 639 next_outgoing_stream_id_ += 2; |
| 640 return id; | 640 return id; |
| 641 } | 641 } |
| 642 | 642 |
| 643 QuicStream* QuicSession::GetOrCreateStream(const QuicStreamId stream_id) { | 643 QuicStream* QuicSession::GetOrCreateStream(const QuicStreamId stream_id) { |
| 644 StaticStreamMap::iterator it = static_stream_map_.find(stream_id); | 644 StaticStreamMap::iterator it = static_stream_map_.find(stream_id); |
| 645 if (it != static_stream_map_.end()) { | 645 if (it != static_stream_map_.end()) { |
| 646 return it->second; | 646 return it->second; |
| 647 } | 647 } |
| 648 return GetOrCreateDynamicStream(stream_id); | 648 return GetOrCreateDynamicStream(stream_id); |
| 649 } | 649 } |
| 650 | 650 |
| 651 void QuicSession::StreamDraining(QuicStreamId stream_id) { | 651 void QuicSession::StreamDraining(QuicStreamId stream_id) { |
| 652 DCHECK(base::ContainsKey(dynamic_stream_map_, stream_id)); | 652 DCHECK(QuicContainsKey(dynamic_stream_map_, stream_id)); |
| 653 if (!base::ContainsKey(draining_streams_, stream_id)) { | 653 if (!QuicContainsKey(draining_streams_, stream_id)) { |
| 654 draining_streams_.insert(stream_id); | 654 draining_streams_.insert(stream_id); |
| 655 if (IsIncomingStream(stream_id)) { | 655 if (IsIncomingStream(stream_id)) { |
| 656 ++num_draining_incoming_streams_; | 656 ++num_draining_incoming_streams_; |
| 657 } | 657 } |
| 658 } | 658 } |
| 659 } | 659 } |
| 660 | 660 |
| 661 bool QuicSession::MaybeIncreaseLargestPeerStreamId( | 661 bool QuicSession::MaybeIncreaseLargestPeerStreamId( |
| 662 const QuicStreamId stream_id) { | 662 const QuicStreamId stream_id) { |
| 663 if (stream_id <= largest_peer_created_stream_id_) { | 663 if (stream_id <= largest_peer_created_stream_id_) { |
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| 696 | 696 |
| 697 bool QuicSession::ShouldYield(QuicStreamId stream_id) { | 697 bool QuicSession::ShouldYield(QuicStreamId stream_id) { |
| 698 if (stream_id == currently_writing_stream_id_) { | 698 if (stream_id == currently_writing_stream_id_) { |
| 699 return false; | 699 return false; |
| 700 } | 700 } |
| 701 return write_blocked_streams()->ShouldYield(stream_id); | 701 return write_blocked_streams()->ShouldYield(stream_id); |
| 702 } | 702 } |
| 703 | 703 |
| 704 QuicStream* QuicSession::GetOrCreateDynamicStream( | 704 QuicStream* QuicSession::GetOrCreateDynamicStream( |
| 705 const QuicStreamId stream_id) { | 705 const QuicStreamId stream_id) { |
| 706 DCHECK(!base::ContainsKey(static_stream_map_, stream_id)) | 706 DCHECK(!QuicContainsKey(static_stream_map_, stream_id)) |
| 707 << "Attempt to call GetOrCreateDynamicStream for a static stream"; | 707 << "Attempt to call GetOrCreateDynamicStream for a static stream"; |
| 708 | 708 |
| 709 DynamicStreamMap::iterator it = dynamic_stream_map_.find(stream_id); | 709 DynamicStreamMap::iterator it = dynamic_stream_map_.find(stream_id); |
| 710 if (it != dynamic_stream_map_.end()) { | 710 if (it != dynamic_stream_map_.end()) { |
| 711 return it->second.get(); | 711 return it->second.get(); |
| 712 } | 712 } |
| 713 | 713 |
| 714 if (IsClosedStream(stream_id)) { | 714 if (IsClosedStream(stream_id)) { |
| 715 return nullptr; | 715 return nullptr; |
| 716 } | 716 } |
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| 765 // Stream is active | 765 // Stream is active |
| 766 return false; | 766 return false; |
| 767 } | 767 } |
| 768 if (!IsIncomingStream(id)) { | 768 if (!IsIncomingStream(id)) { |
| 769 // Locally created streams are strictly in-order. If the id is in the | 769 // Locally created streams are strictly in-order. If the id is in the |
| 770 // range of created streams and it's not active, it must have been closed. | 770 // range of created streams and it's not active, it must have been closed. |
| 771 return id < next_outgoing_stream_id_; | 771 return id < next_outgoing_stream_id_; |
| 772 } | 772 } |
| 773 // For peer created streams, we also need to consider available streams. | 773 // For peer created streams, we also need to consider available streams. |
| 774 return id <= largest_peer_created_stream_id_ && | 774 return id <= largest_peer_created_stream_id_ && |
| 775 !base::ContainsKey(available_streams_, id); | 775 !QuicContainsKey(available_streams_, id); |
| 776 } | 776 } |
| 777 | 777 |
| 778 bool QuicSession::IsOpenStream(QuicStreamId id) { | 778 bool QuicSession::IsOpenStream(QuicStreamId id) { |
| 779 DCHECK_NE(0u, id); | 779 DCHECK_NE(0u, id); |
| 780 if (base::ContainsKey(static_stream_map_, id) || | 780 if (QuicContainsKey(static_stream_map_, id) || |
| 781 base::ContainsKey(dynamic_stream_map_, id)) { | 781 QuicContainsKey(dynamic_stream_map_, id)) { |
| 782 // Stream is active | 782 // Stream is active |
| 783 return true; | 783 return true; |
| 784 } | 784 } |
| 785 return false; | 785 return false; |
| 786 } | 786 } |
| 787 | 787 |
| 788 size_t QuicSession::GetNumOpenIncomingStreams() const { | 788 size_t QuicSession::GetNumOpenIncomingStreams() const { |
| 789 return num_dynamic_incoming_streams_ - num_draining_incoming_streams_ + | 789 return num_dynamic_incoming_streams_ - num_draining_incoming_streams_ + |
| 790 num_locally_closed_incoming_streams_highest_offset_; | 790 num_locally_closed_incoming_streams_highest_offset_; |
| 791 } | 791 } |
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| 861 | 861 |
| 862 size_t QuicSession::MaxAvailableStreams() const { | 862 size_t QuicSession::MaxAvailableStreams() const { |
| 863 return max_open_incoming_streams_ * kMaxAvailableStreamsMultiplier; | 863 return max_open_incoming_streams_ * kMaxAvailableStreamsMultiplier; |
| 864 } | 864 } |
| 865 | 865 |
| 866 bool QuicSession::IsIncomingStream(QuicStreamId id) const { | 866 bool QuicSession::IsIncomingStream(QuicStreamId id) const { |
| 867 return id % 2 != next_outgoing_stream_id_ % 2; | 867 return id % 2 != next_outgoing_stream_id_ % 2; |
| 868 } | 868 } |
| 869 | 869 |
| 870 } // namespace net | 870 } // namespace net |
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