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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 that adds pacing on top of an another send algorithm. | 5 // A send algorithm that adds pacing on top of an another send algorithm. |
6 // It uses the underlying sender's pacing rate to schedule packets. | 6 // It uses the underlying sender's pacing rate to schedule packets. |
7 // It also takes into consideration the expected granularity of the underlying | 7 // It also takes into consideration the expected granularity of the underlying |
8 // alarm to ensure that alarms are not set too aggressively, and err towards | 8 // alarm to ensure that alarms are not set too aggressively, and err towards |
9 // sending packets too early instead of too late. | 9 // sending packets too early instead of too late. |
10 | 10 |
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45 void OnCongestionEvent(bool rtt_updated, | 45 void OnCongestionEvent(bool rtt_updated, |
46 QuicByteCount bytes_in_flight, | 46 QuicByteCount bytes_in_flight, |
47 const CongestionVector& acked_packets, | 47 const CongestionVector& acked_packets, |
48 const CongestionVector& lost_packets) override; | 48 const CongestionVector& lost_packets) override; |
49 bool OnPacketSent(QuicTime sent_time, | 49 bool OnPacketSent(QuicTime sent_time, |
50 QuicByteCount bytes_in_flight, | 50 QuicByteCount bytes_in_flight, |
51 QuicPacketSequenceNumber sequence_number, | 51 QuicPacketSequenceNumber sequence_number, |
52 QuicByteCount bytes, | 52 QuicByteCount bytes, |
53 HasRetransmittableData is_retransmittable) override; | 53 HasRetransmittableData is_retransmittable) override; |
54 void OnRetransmissionTimeout(bool packets_retransmitted) override; | 54 void OnRetransmissionTimeout(bool packets_retransmitted) override; |
55 void RevertRetransmissionTimeout() override; | |
56 QuicTime::Delta TimeUntilSend( | 55 QuicTime::Delta TimeUntilSend( |
57 QuicTime now, | 56 QuicTime now, |
58 QuicByteCount bytes_in_flight, | 57 QuicByteCount bytes_in_flight, |
59 HasRetransmittableData has_retransmittable_data) const override; | 58 HasRetransmittableData has_retransmittable_data) const override; |
60 QuicBandwidth PacingRate() const override; | 59 QuicBandwidth PacingRate() const override; |
61 QuicBandwidth BandwidthEstimate() const override; | 60 QuicBandwidth BandwidthEstimate() const override; |
62 bool HasReliableBandwidthEstimate() const override; | 61 bool HasReliableBandwidthEstimate() const override; |
63 QuicTime::Delta RetransmissionDelay() const override; | 62 QuicTime::Delta RetransmissionDelay() const override; |
64 QuicByteCount GetCongestionWindow() const override; | 63 QuicByteCount GetCongestionWindow() const override; |
65 bool InSlowStart() const override; | 64 bool InSlowStart() const override; |
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80 QuicTime last_delayed_packet_sent_time_; | 79 QuicTime last_delayed_packet_sent_time_; |
81 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. | 80 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. |
82 mutable bool was_last_send_delayed_; // True when the last send was delayed. | 81 mutable bool was_last_send_delayed_; // True when the last send was delayed. |
83 | 82 |
84 DISALLOW_COPY_AND_ASSIGN(PacingSender); | 83 DISALLOW_COPY_AND_ASSIGN(PacingSender); |
85 }; | 84 }; |
86 | 85 |
87 } // namespace net | 86 } // namespace net |
88 | 87 |
89 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 88 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
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