fix_rate_sender.h revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e 
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      const SentPacketsMap& sent_packets) OVERRIDE;
31  virtual void OnIncomingAck(QuicPacketSequenceNumber acked_sequence_number,
32                             QuicByteCount acked_bytes,
33                             QuicTime::Delta rtt) OVERRIDE;
34  virtual void OnIncomingLoss(QuicTime ack_receive_time) OVERRIDE;
35  virtual bool SentPacket(
36      QuicTime sent_time,
37      QuicPacketSequenceNumber equence_number,
38      QuicByteCount bytes,
39      Retransmission is_retransmission,
40      HasRetransmittableData has_retransmittable_data) OVERRIDE;
41  virtual void AbandoningPacket(QuicPacketSequenceNumber sequence_number,
42                                QuicByteCount abandoned_bytes) OVERRIDE;
43  virtual QuicTime::Delta TimeUntilSend(
44      QuicTime now,
45      Retransmission is_retransmission,
46      HasRetransmittableData has_retransmittable_data,
47      IsHandshake handshake) OVERRIDE;
48  virtual QuicBandwidth BandwidthEstimate() OVERRIDE;
49  virtual QuicTime::Delta SmoothedRtt() OVERRIDE;
50  virtual QuicTime::Delta RetransmissionDelay() OVERRIDE;
51  // End implementation of SendAlgorithmInterface.
52
53 private:
54  QuicByteCount CongestionWindow();
55
56  QuicBandwidth bitrate_;
57  LeakyBucket fix_rate_leaky_bucket_;
58  PacedSender paced_sender_;
59  QuicByteCount data_in_flight_;
60  QuicTime::Delta latest_rtt_;
61
62  DISALLOW_COPY_AND_ASSIGN(FixRateSender);
63};
64
65}  // namespace net
66
67#endif  // NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_
68