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 17namespace net { 18 19class 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_ 45