fix_rate_sender.h revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
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// Fix rate send side congestion control, used for testing.
6
7#ifndef NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_
8#define NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_
9
10#include "base/basictypes.h"
11#include "base/compiler_specific.h"
12#include "net/base/net_export.h"
13#include "net/quic/quic_clock.h"
14#include "net/quic/quic_time.h"
15#include "net/quic/congestion_control/leaky_bucket.h"
16#include "net/quic/congestion_control/paced_sender.h"
17#include "net/quic/congestion_control/send_algorithm_interface.h"
18
19namespace net {
20
21class NET_EXPORT_PRIVATE FixRateSender : public SendAlgorithmInterface {
22 public:
23  explicit FixRateSender(const QuicClock* clock);
24  virtual ~FixRateSender();
25
26  // Start implementation of SendAlgorithmInterface.
27  virtual void OnIncomingQuicCongestionFeedbackFrame(
28      const QuicCongestionFeedbackFrame& feedback,
29      QuicTime feedback_receive_time,
30      QuicBandwidth sent_bandwidth,
31      const SentPacketsMap& sent_packets) OVERRIDE;
32  virtual void OnIncomingAck(QuicPacketSequenceNumber acked_sequence_number,
33                             QuicByteCount acked_bytes,
34                             QuicTime::Delta rtt) OVERRIDE;
35  virtual void OnIncomingLoss(QuicTime ack_receive_time) OVERRIDE;
36  virtual void SentPacket(QuicTime sent_time,
37                          QuicPacketSequenceNumber equence_number,
38                          QuicByteCount bytes,
39                          bool is_retransmission) OVERRIDE;
40  virtual void AbandoningPacket(QuicPacketSequenceNumber sequence_number,
41                                QuicByteCount abandoned_bytes) OVERRIDE;
42  virtual QuicTime::Delta TimeUntilSend(QuicTime now,
43                                        bool is_retransmission,
44                                        bool has_retransmittable_data) OVERRIDE;
45  virtual QuicBandwidth BandwidthEstimate() OVERRIDE;
46  virtual QuicTime::Delta SmoothedRtt() OVERRIDE;
47  // End implementation of SendAlgorithmInterface.
48
49 private:
50  QuicByteCount CongestionWindow();
51
52  QuicBandwidth bitrate_;
53  LeakyBucket fix_rate_leaky_bucket_;
54  PacedSender paced_sender_;
55  QuicByteCount data_in_flight_;
56  QuicTime::Delta latest_rtt_;
57
58  DISALLOW_COPY_AND_ASSIGN(FixRateSender);
59};
60
61}  // namespace net
62
63#endif  // NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_
64