Land Recent QUIC changes.

net/quic/quic_connection.h

 // 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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 704 matching lines @@
 
   // An alarm that fires when an ACK should be sent to the peer.
   scoped_ptr<QuicAlarm> ack_alarm_;
   // An alarm that fires when a packet needs to be retransmitted.
   scoped_ptr<QuicAlarm> retransmission_alarm_;
   // An alarm that fires when one or more FEC packets are to be discarded.
   scoped_ptr<QuicAlarm> abandon_fec_alarm_;
   // An alarm that is scheduled when the sent scheduler requires a
   // a delay before sending packets and fires when the packet may be sent.
   scoped_ptr<QuicAlarm> send_alarm_;
+  // An alarm that is scheduled when the connection can still write and there
+  // may be more data to send.
+  scoped_ptr<QuicAlarm> resume_writes_alarm_;
   // An alarm that fires when the connection may have timed out.
   scoped_ptr<QuicAlarm> timeout_alarm_;
 
   QuicConnectionVisitorInterface* visitor_;
   QuicConnectionDebugVisitorInterface* debug_visitor_;
   QuicPacketCreator packet_creator_;
   QuicPacketGenerator packet_generator_;
 
   // Network idle time before we kill of this connection.
   QuicTime::Delta idle_network_timeout_;
   // Overall connection timeout.
   QuicTime::Delta overall_connection_timeout_;
   // Connection creation time.
   QuicTime creation_time_;
 
   // Statistics for this session.
   QuicConnectionStats stats_;
 
   // The time that we got a packet for this connection.
   // This is used for timeouts, and does not indicate the packet was processed.
   QuicTime time_of_last_received_packet_;
 
   // The time that we last sent a packet for this connection.
   QuicTime time_of_last_sent_packet_;
 
+  // Sequence number of the last packet guaranteed to be sent in packet sequence
+  // number order.  Not set when packets are queued, since that may cause
+  // re-ordering.
+  QuicPacketSequenceNumber sequence_number_of_last_inorder_packet_;
+
   // Congestion manager which controls the rate the connection sends packets
   // as well as collecting and generating congestion feedback.
   QuicCongestionManager congestion_manager_;
 
   // Sent packet manager which tracks the status of packets sent by this
   // connection.
   QuicSentPacketManager sent_packet_manager_;
 
   // The state of connection in version negotiation finite state machine.
   QuicVersionNegotiationState version_negotiation_state_;
@@ skipping 24 matching lines @@
 
   // Only used to configure fake packet loss.
   SimpleRandom simple_random_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_