quic_session.h revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d
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)// A QuicSession, which demuxes a single connection to individual streams. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef NET_QUIC_QUIC_SESSION_H_ 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define NET_QUIC_QUIC_SESSION_H_ 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/hash_tables.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/ip_endpoint.h" 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/quic/blocked_list.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_connection.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_crypto_stream.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_packet_creator.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_protocol.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/reliable_quic_stream.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class QuicCryptoStream; 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class ReliableQuicStream; 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class VisitorShim; 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace test { 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class QuicSessionPeer; 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace test 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicSession : public QuicConnectionVisitorInterface { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 34c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // CryptoHandshakeEvent enumerates the events generated by a QuicCryptoStream. 35c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) enum CryptoHandshakeEvent { 36c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // ENCRYPTION_FIRST_ESTABLISHED indicates that a full client hello has been 37c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // sent by a client and that subsequent packets will be encrypted. (Client 38c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // only.) 39c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_FIRST_ESTABLISHED, 40c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // ENCRYPTION_REESTABLISHED indicates that a client hello was rejected by 41c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the server and thus the encryption key has been updated. Therefore the 42c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // connection should resend any packets that were sent under 43c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // ENCRYPTION_INITIAL. (Client only.) 44c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_REESTABLISHED, 45c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // HANDSHAKE_CONFIRMED, in a client, indicates the the server has accepted 46c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // our handshake. In a server it indicates that a full, valid client hello 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // has been received. (Client and server.) 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) HANDSHAKE_CONFIRMED, 49c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) }; 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicSession(QuicConnection* connection, bool is_server); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~QuicSession(); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // QuicConnectionVisitorInterface methods: 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool OnPacket(const IPEndPoint& self_address, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const IPEndPoint& peer_address, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const QuicPacketHeader& header, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::vector<QuicStreamFrame>& frame) OVERRIDE; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnRstStream(const QuicRstStreamFrame& frame) OVERRIDE; 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void OnGoAway(const QuicGoAwayFrame& frame) OVERRIDE; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void ConnectionClose(QuicErrorCode error, bool from_peer) OVERRIDE; 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Not needed for HTTP. 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void OnAck(const SequenceNumberSet& acked_packets) OVERRIDE {} 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool OnCanWrite() OVERRIDE; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called by streams when they want to write data to the peer. 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Returns a pair with the number of bytes consumed from data, and a boolean 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // indicating if the fin bit was consumed. This does not indicate the data 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // has been sent on the wire: it may have been turned into a packet and queued 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // if the socket was unexpectedly blocked. 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual QuicConsumedData WriteData(QuicStreamId id, 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece data, 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset, 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fin); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called by streams when they want to close the stream in both directions. 77c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual void SendRstStream(QuicStreamId id, QuicRstStreamErrorCode error); 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Called when the session wants to go away and not accept any new streams. 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void SendGoAway(QuicErrorCode error_code, const std::string& reason); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Removes the stream associated with 'stream_id' from the active stream map. 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void CloseStream(QuicStreamId stream_id); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Returns true if outgoing packets will be encrypted, even if the server 86c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // hasn't confirmed the handshake yet. 87c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual bool IsEncryptionEstablished(); 88c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 89c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // For a client, returns true if the server has confirmed our handshake. For 90c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // a server, returns true if a full, valid client hello has been received. 91c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual bool IsCryptoHandshakeConfirmed(); 92c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 93c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Called by the QuicCryptoStream when the handshake enters a new state. 94c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // 95c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Clients will call this function in the order: 96c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // ENCRYPTION_FIRST_ESTABLISHED 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // zero or more ENCRYPTION_REESTABLISHED 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // HANDSHAKE_CONFIRMED 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Servers will simply call it once with HANDSHAKE_CONFIRMED. 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual void OnCryptoHandshakeEvent(CryptoHandshakeEvent event); 1022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Returns true if the stream existed previously and has been closed. 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Returns false if the stream is still active or if the stream has 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // not yet been created. 1062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool IsClosedStream(QuicStreamId id); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicConnection* connection() { return connection_.get(); } 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t num_active_requests() const { return stream_map_.size(); } 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const IPEndPoint& peer_address() const { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return connection_->peer_address(); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGuid guid() const { return connection_->guid(); } 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicPacketCreator::Options* options() { return connection()->options(); } 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the number of currently open streams, including those which have 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // been implicitly created. 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual size_t GetNumOpenStreams() const; 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void MarkWriteBlocked(QuicStreamId id); 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool goaway_received() const { 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return goaway_received_; 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool goaway_sent() const { 1282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return goaway_sent_; 1292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Creates a new stream, owned by the caller, to handle a peer-initiated 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // stream. Returns NULL and does error handling if the stream can not be 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // created. 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ReliableQuicStream* CreateIncomingReliableStream(QuicStreamId id) = 0; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Create a new stream, owned by the caller, to handle a locally-initiated 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // stream. Returns NULL if max streams have already been opened. 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ReliableQuicStream* CreateOutgoingReliableStream() = 0; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Return the reserved crypto stream. 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual QuicCryptoStream* GetCryptoStream() = 0; 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Adds 'stream' to the active stream map. 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void ActivateStream(ReliableQuicStream* stream); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the stream id for a new stream. 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId GetNextStreamId(); 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* GetIncomingReliableStream(QuicStreamId stream_id); 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // This is called after every call other than OnConnectionClose from the 1532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // QuicConnectionVisitor to allow post-processing once the work has been done. 1542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // In this case, it deletes streams given that it's safe to do so (no other 1552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // operations are being done on the streams at this time) 1562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual void PostProcessAfterData(); 1572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::hash_map<QuicStreamId, ReliableQuicStream*>* streams() { 1592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return &stream_map_; 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<ReliableQuicStream*>* closed_streams() { 1622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return &closed_streams_; 1632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t get_max_open_streams() const { 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return max_open_streams_; 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 1702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) friend class test::QuicSessionPeer; 1712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) friend class VisitorShim; 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef base::hash_map<QuicStreamId, ReliableQuicStream*> ReliableStreamMap; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableQuicStream* GetStream(const QuicStreamId stream_id); 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<QuicConnection> connection_; 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A shim to stand between the connection and the session, to handle stream 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // deletions. 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<VisitorShim> visitor_shim_; 1822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<ReliableQuicStream*> closed_streams_; 1842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the maximum number of streams this connection can open. 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const size_t max_open_streams_; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Map from StreamId to pointers to streams that are owned by the caller. 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReliableStreamMap stream_map_; 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId next_stream_id_; 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_server_; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Set of stream ids that have been "implicitly created" by receipt 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // of a stream id larger than the next expected stream id. 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::hash_set<QuicStreamId> implicitly_created_streams_; 1962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A list of streams which need to write more data. 1982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) BlockedList<QuicStreamId> write_blocked_streams_; 1992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId largest_peer_created_stream_id_; 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Whether a GoAway has been received. 2032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool goaway_received_; 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Whether a GoAway has been sent. 2052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool goaway_sent_; 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicSession); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // NET_QUIC_QUIC_SESSION_H_ 213