src/net/quic/congestion_control/tcp_receiver.h

   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
   3 // found in the LICENSE file.
   4 //
   5 // TCP receiver side congestion algorithm, emulates the behaviour of TCP.
   6
   7 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_RECEIVER_H_
   8 #define NET_QUIC_CONGESTION_CONTROL_TCP_RECEIVER_H_
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "net/base/net_export.h"
  13 #include "net/quic/congestion_control/receive_algorithm_interface.h"
  14 #include "net/quic/quic_clock.h"
  15 #include "net/quic/quic_protocol.h"
  16
  17 namespace net {
  18
  19 class NET_EXPORT_PRIVATE TcpReceiver : public ReceiveAlgorithmInterface {
  20  public:
  21   TcpReceiver();
  22
  23   // Size of the (currently fixed) receive window.
  24   static const QuicByteCount kReceiveWindowTCP;
  25
  26   // Start implementation of SendAlgorithmInterface.
  27   virtual bool GenerateCongestionFeedback(
  28       QuicCongestionFeedbackFrame* feedback) OVERRIDE;
  29
  30   virtual void RecordIncomingPacket(QuicByteCount bytes,
  31                                     QuicPacketSequenceNumber sequence_number,
  32                                     QuicTime timestamp,
  33                                     bool revived) OVERRIDE;
  34
  35  private:
  36   // We need to keep track of FEC recovered packets.
  37   int accumulated_number_of_recoverd_lost_packets_;
  38   QuicByteCount receive_window_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(TcpReceiver);
  41 };
  42
  43 }  // namespace net
  44 #endif  // NET_QUIC_CONGESTION_CONTROL_TCP_RECEIVER_H_