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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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38 | 38 |
39 void SetMaxPacingRate(QuicBandwidth max_pacing_rate); | 39 void SetMaxPacingRate(QuicBandwidth max_pacing_rate); |
40 | 40 |
41 // SendAlgorithmInterface methods. | 41 // SendAlgorithmInterface methods. |
42 void SetFromConfig(const QuicConfig& config, | 42 void SetFromConfig(const QuicConfig& config, |
43 Perspective perspective) override; | 43 Perspective perspective) override; |
44 void ResumeConnectionState( | 44 void ResumeConnectionState( |
45 const CachedNetworkParameters& cached_network_params, | 45 const CachedNetworkParameters& cached_network_params, |
46 bool max_bandwidth_resumption) override; | 46 bool max_bandwidth_resumption) override; |
47 void SetNumEmulatedConnections(int num_connections) override; | 47 void SetNumEmulatedConnections(int num_connections) override; |
48 void SetMaxCongestionWindow(QuicByteCount max_congestion_window) override; | |
49 void OnCongestionEvent(bool rtt_updated, | 48 void OnCongestionEvent(bool rtt_updated, |
50 QuicByteCount bytes_in_flight, | 49 QuicByteCount bytes_in_flight, |
51 const CongestionVector& acked_packets, | 50 const CongestionVector& acked_packets, |
52 const CongestionVector& lost_packets) override; | 51 const CongestionVector& lost_packets) override; |
53 bool OnPacketSent(QuicTime sent_time, | 52 bool OnPacketSent(QuicTime sent_time, |
54 QuicByteCount bytes_in_flight, | 53 QuicByteCount bytes_in_flight, |
55 QuicPacketNumber packet_number, | 54 QuicPacketNumber packet_number, |
56 QuicByteCount bytes, | 55 QuicByteCount bytes, |
57 HasRetransmittableData is_retransmittable) override; | 56 HasRetransmittableData is_retransmittable) override; |
58 void OnRetransmissionTimeout(bool packets_retransmitted) override; | 57 void OnRetransmissionTimeout(bool packets_retransmitted) override; |
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85 QuicTime last_delayed_packet_sent_time_; | 84 QuicTime last_delayed_packet_sent_time_; |
86 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. | 85 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. |
87 mutable bool was_last_send_delayed_; // True when the last send was delayed. | 86 mutable bool was_last_send_delayed_; // True when the last send was delayed. |
88 | 87 |
89 DISALLOW_COPY_AND_ASSIGN(PacingSender); | 88 DISALLOW_COPY_AND_ASSIGN(PacingSender); |
90 }; | 89 }; |
91 | 90 |
92 } // namespace net | 91 } // namespace net |
93 | 92 |
94 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 93 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
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