quic_session.cc revision 90dce4d38c5ff5333bea97d859d4e484e27edf0c
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_session.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/stl_util.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_connection.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using base::StringPiece; 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using base::hash_map; 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using base::hash_set; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using std::vector; 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// We want to make sure we delete any closed streams in a safe manner. 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// To avoid deleting a stream in mid-operation, we have a simple shim between 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// us and the stream, so we can delete any streams when we return from 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// processing. 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// We could just override the base methods, but this makes it easier to make 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// sure we don't miss any. 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class VisitorShim : public QuicConnectionVisitorInterface { 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit VisitorShim(QuicSession* session) : session_(session) {} 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool OnPacket(const IPEndPoint& self_address, 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const IPEndPoint& peer_address, 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicPacketHeader& header, 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const vector<QuicStreamFrame>& frame) OVERRIDE { 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool accepted = session_->OnPacket(self_address, peer_address, header, 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) frame); 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->PostProcessAfterData(); 352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return accepted; 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void OnRstStream(const QuicRstStreamFrame& frame) OVERRIDE { 382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->OnRstStream(frame); 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->PostProcessAfterData(); 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void OnGoAway(const QuicGoAwayFrame& frame) OVERRIDE { 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->OnGoAway(frame); 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->PostProcessAfterData(); 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void OnAck(const SequenceNumberSet& acked_packets) OVERRIDE { 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->OnAck(acked_packets); 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->PostProcessAfterData(); 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool OnCanWrite() OVERRIDE { 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool rc = session_->OnCanWrite(); 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->PostProcessAfterData(); 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return rc; 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void ConnectionClose(QuicErrorCode error, bool from_peer) OVERRIDE { 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) session_->ConnectionClose(error, from_peer); 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The session will go away, so don't bother with cleanup. 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicSession* session_; 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)QuicSession::QuicSession(QuicConnection* connection, 6890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) const QuicConfig& config, 6990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) bool is_server) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : connection_(connection), 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) visitor_shim_(new VisitorShim(this)), 7290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) config_(config), 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) max_open_streams_(kDefaultMaxStreamsPerConnection), 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_stream_id_(is_server ? 2 : 3), 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_server_(is_server), 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) largest_peer_created_stream_id_(0), 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_received_(false), 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_sent_(false) { 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) connection->set_visitor(visitor_shim_.get()); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)QuicSession::~QuicSession() { 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) STLDeleteElements(&closed_streams_); 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) STLDeleteValues(&stream_map_); 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool QuicSession::OnPacket(const IPEndPoint& self_address, 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const IPEndPoint& peer_address, 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const QuicPacketHeader& header, 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const vector<QuicStreamFrame>& frames) { 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (header.public_header.guid != connection()->guid()) { 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG(INFO) << "Got packet header for invalid GUID: " 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) << header.public_header.guid; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (size_t i = 0; i < frames.size(); ++i) { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(rch) deal with the error case of stream id 0 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsClosedStream(frames[i].stream_id)) continue; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* stream = GetStream(frames[i].stream_id); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream == NULL) return false; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!stream->WillAcceptStreamFrame(frames[i])) return false; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(alyssar) check against existing connection address: if changed, make 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sure we update the connection. 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (size_t i = 0; i < frames.size(); ++i) { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* stream = GetStream(frames[i].stream_id); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream) { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) stream->OnStreamFrame(frames[i]); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 114b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) 115b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) while (!decompression_blocked_streams_.empty()) { 116b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) QuicHeaderId header_id = decompression_blocked_streams_.begin()->first; 117b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (header_id == decompressor_.current_header_id()) { 118b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) QuicStreamId stream_id = decompression_blocked_streams_.begin()->second; 119b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) decompression_blocked_streams_.erase(header_id); 120b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) ReliableQuicStream* stream = GetStream(stream_id); 121b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (!stream) { 122b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) connection()->SendConnectionClose( 123b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) QUIC_STREAM_RST_BEFORE_HEADERS_DECOMPRESSED); 124b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 125b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) stream->OnDecompressorAvailable(); 126b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 127b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void QuicSession::OnRstStream(const QuicRstStreamFrame& frame) { 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* stream = GetStream(frame.stream_id); 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!stream) { 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; // Errors are handled by GetStream. 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) stream->OnStreamReset(frame.error_code); 1372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void QuicSession::OnGoAway(const QuicGoAwayFrame& frame) { 1402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(frame.last_good_stream_id < next_stream_id_); 1412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_received_ = true; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void QuicSession::ConnectionClose(QuicErrorCode error, bool from_peer) { 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (stream_map_.size() != 0) { 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableStreamMap::iterator it = stream_map_.begin(); 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId id = it->first; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) it->second->ConnectionClose(error, from_peer); 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The stream should call CloseStream as part of ConnectionClose. 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_map_.find(id) != stream_map_.end()) { 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(DFATAL) << "Stream failed to close under ConnectionClose"; 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseStream(id); 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool QuicSession::OnCanWrite() { 1582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // We latch this here rather than doing a traditional loop, because streams 1592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // may be modifying the list as we loop. 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int remaining_writes = write_blocked_streams_.NumObjects(); 1612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) while (!connection_->HasQueuedData() && 1632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) remaining_writes > 0) { 1642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DCHECK(!write_blocked_streams_.IsEmpty()); 1652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ReliableQuicStream* stream = 1662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetStream(write_blocked_streams_.GetNextBlockedObject()); 1672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (stream != NULL) { 1682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // If the stream can't write all bytes, it'll re-add itself to the blocked 1692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // list. 1702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) stream->OnCanWrite(); 1712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) --remaining_writes; 1732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return write_blocked_streams_.IsEmpty(); 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)QuicConsumedData QuicSession::WriteData(QuicStreamId id, 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) StringPiece data, 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset, 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fin) { 1822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return connection_->SendStreamData(id, data, offset, fin); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void QuicSession::SendRstStream(QuicStreamId id, 186c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicRstStreamErrorCode error) { 1872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) connection_->SendRstStream(id, error); 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseStream(id); 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void QuicSession::SendGoAway(QuicErrorCode error_code, const string& reason) { 1922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_sent_ = true; 1932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) connection_->SendGoAway(error_code, largest_peer_created_stream_id_, reason); 1942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void QuicSession::CloseStream(QuicStreamId stream_id) { 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(INFO) << "Closing stream " << stream_id; 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableStreamMap::iterator it = stream_map_.find(stream_id); 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it == stream_map_.end()) { 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(INFO) << "Stream is already closed: " << stream_id; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 204c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ReliableQuicStream* stream = it->second; 2052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) closed_streams_.push_back(it->second); 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) stream_map_.erase(it); 207c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) stream->OnClose(); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 210c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)bool QuicSession::IsEncryptionEstablished() { 211c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return GetCryptoStream()->encryption_established(); 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 214c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)bool QuicSession::IsCryptoHandshakeConfirmed() { 215c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return GetCryptoStream()->handshake_confirmed(); 216c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 217c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 218c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)void QuicSession::OnCryptoHandshakeEvent(CryptoHandshakeEvent event) { 21990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) switch (event) { 22090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // TODO(satyamshekhar): Move the logic of setting the encrypter/decrypter 22190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // to QuicSession since it is the glue. 22290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case ENCRYPTION_FIRST_ESTABLISHED: 22390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) break; 22490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 22590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case ENCRYPTION_REESTABLISHED: 22690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Retransmit originally packets that were sent, since they can't be 22790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // decrypted by the peer. 22890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) connection_->RetransmitUnackedPackets( 22990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) QuicConnection::INITIAL_ENCRYPTION_ONLY); 23090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) break; 23190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 23290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case HANDSHAKE_CONFIRMED: 23390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) LOG_IF(DFATAL, !config_.negotiated()) 23490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) << "Handshake confirmed without parameter negotiation."; 23590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) connection_->SetConnectionTimeout( 23690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) config_.idle_connection_state_lifetime()); 23790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) max_open_streams_ = config_.max_streams_per_connection(); 23890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) break; 23990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 24090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) default: 24190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) LOG(ERROR) << "Got unknown handshake event: " << event; 242b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) } 2432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 24590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)QuicConfig* QuicSession::config() { 24690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return &config_; 24790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 24890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void QuicSession::ActivateStream(ReliableQuicStream* stream) { 2502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DLOG(INFO) << "num_streams: " << stream_map_.size() 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << ". activating " << stream->id(); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(stream_map_.count(stream->id()) == 0); 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) stream_map_[stream->id()] = stream; 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)QuicStreamId QuicSession::GetNextStreamId() { 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId id = next_stream_id_; 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) next_stream_id_ += 2; 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return id; 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ReliableQuicStream* QuicSession::GetStream(const QuicStreamId stream_id) { 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_id == kCryptoStreamId) { 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GetCryptoStream(); 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableStreamMap::iterator it = stream_map_.find(stream_id); 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it != stream_map_.end()) { 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return it->second; 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (IsClosedStream(stream_id)) { 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return NULL; 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_id % 2 == next_stream_id_ % 2) { 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We've received a frame for a locally-created stream that is not 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // currently active. This is an error. 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) connection()->SendConnectionClose(QUIC_PACKET_FOR_NONEXISTENT_STREAM); 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GetIncomingReliableStream(stream_id); 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ReliableQuicStream* QuicSession::GetIncomingReliableStream( 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId stream_id) { 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsClosedStream(stream_id)) { 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (goaway_sent_) { 2932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // We've already sent a GoAway 294c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) SendRstStream(stream_id, QUIC_STREAM_PEER_GOING_AWAY); 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return NULL; 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) implicitly_created_streams_.erase(stream_id); 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_id > largest_peer_created_stream_id_) { 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(rch) add unit test for this 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_id - largest_peer_created_stream_id_ > kMaxStreamIdDelta) { 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) connection()->SendConnectionClose(QUIC_INVALID_STREAM_ID); 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (largest_peer_created_stream_id_ != 0) { 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (QuicStreamId id = largest_peer_created_stream_id_ + 2; 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) id < stream_id; 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) id += 2) { 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) implicitly_created_streams_.insert(id); 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) largest_peer_created_stream_id_ = stream_id; 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* stream = CreateIncomingReliableStream(stream_id); 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream == NULL) { 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ActivateStream(stream); 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return stream; 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool QuicSession::IsClosedStream(QuicStreamId id) { 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_NE(0u, id); 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (id == kCryptoStreamId) { 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stream_map_.count(id) != 0) { 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Stream is active 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (id % 2 == next_stream_id_ % 2) { 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Locally created streams are strictly in-order. If the id is in the 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // range of created streams and it's not active, it must have been closed. 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return id < next_stream_id_; 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For peer created streams, we also need to consider implicitly created 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // streams. 3382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return id <= largest_peer_created_stream_id_ && 3392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) implicitly_created_streams_.count(id) == 0; 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)size_t QuicSession::GetNumOpenStreams() const { 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return stream_map_.size() + implicitly_created_streams_.size(); 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void QuicSession::MarkWriteBlocked(QuicStreamId id) { 3472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) write_blocked_streams_.AddBlockedObject(id); 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 350b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)void QuicSession::MarkDecompressionBlocked(QuicHeaderId header_id, 351b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) QuicStreamId stream_id) { 352b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) decompression_blocked_streams_[header_id] = stream_id; 353b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)} 354b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) 3552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void QuicSession::PostProcessAfterData() { 3562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) STLDeleteElements(&closed_streams_); 3572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) closed_streams_.clear(); 3582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 361