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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // A send algorithm which adds pacing on top of an another send algorithm. | 5 // A send algorithm which adds pacing on top of an another send algorithm. |
6 // It uses the underlying sender's bandwidth estimate to determine the | 6 // It uses the underlying sender's bandwidth estimate to determine the |
7 // pacing rate to be used. It also takes into consideration the expected | 7 // pacing rate to be used. It also takes into consideration the expected |
8 // resolution of the underlying alarm mechanism to ensure that alarms are | 8 // resolution of the underlying alarm mechanism to ensure that alarms are |
9 // not set too aggressively, and to smooth out variations. | 9 // not set too aggressively, and to smooth out variations. |
10 | 10 |
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34 uint32 initial_packet_burst); | 34 uint32 initial_packet_burst); |
35 virtual ~PacingSender(); | 35 virtual ~PacingSender(); |
36 | 36 |
37 // SendAlgorithmInterface methods. | 37 // SendAlgorithmInterface methods. |
38 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; | 38 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; |
39 virtual void OnIncomingQuicCongestionFeedbackFrame( | 39 virtual void OnIncomingQuicCongestionFeedbackFrame( |
40 const QuicCongestionFeedbackFrame& feedback, | 40 const QuicCongestionFeedbackFrame& feedback, |
41 QuicTime feedback_receive_time) OVERRIDE; | 41 QuicTime feedback_receive_time) OVERRIDE; |
42 virtual void OnCongestionEvent(bool rtt_updated, | 42 virtual void OnCongestionEvent(bool rtt_updated, |
43 QuicByteCount bytes_in_flight, | 43 QuicByteCount bytes_in_flight, |
44 const CongestionMap& acked_packets, | 44 const CongestionVector& acked_packets, |
45 const CongestionMap& lost_packets) OVERRIDE; | 45 const CongestionVector& lost_packets) OVERRIDE; |
46 virtual bool OnPacketSent(QuicTime sent_time, | 46 virtual bool OnPacketSent(QuicTime sent_time, |
47 QuicByteCount bytes_in_flight, | 47 QuicByteCount bytes_in_flight, |
48 QuicPacketSequenceNumber sequence_number, | 48 QuicPacketSequenceNumber sequence_number, |
49 QuicByteCount bytes, | 49 QuicByteCount bytes, |
50 HasRetransmittableData is_retransmittable) OVERRIDE; | 50 HasRetransmittableData is_retransmittable) OVERRIDE; |
51 virtual void OnRetransmissionTimeout(bool packets_retransmitted) OVERRIDE; | 51 virtual void OnRetransmissionTimeout(bool packets_retransmitted) OVERRIDE; |
52 virtual void RevertRetransmissionTimeout() OVERRIDE; | 52 virtual void RevertRetransmissionTimeout() OVERRIDE; |
53 virtual QuicTime::Delta TimeUntilSend( | 53 virtual QuicTime::Delta TimeUntilSend( |
54 QuicTime now, | 54 QuicTime now, |
55 QuicByteCount bytes_in_flight, | 55 QuicByteCount bytes_in_flight, |
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73 QuicTime next_packet_send_time_; // When can the next packet be sent. | 73 QuicTime next_packet_send_time_; // When can the next packet be sent. |
74 mutable bool was_last_send_delayed_; // True when the last send was delayed. | 74 mutable bool was_last_send_delayed_; // True when the last send was delayed. |
75 bool has_valid_rtt_; // True if we have at least one RTT update. | 75 bool has_valid_rtt_; // True if we have at least one RTT update. |
76 | 76 |
77 DISALLOW_COPY_AND_ASSIGN(PacingSender); | 77 DISALLOW_COPY_AND_ASSIGN(PacingSender); |
78 }; | 78 }; |
79 | 79 |
80 } // namespace net | 80 } // namespace net |
81 | 81 |
82 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 82 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
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