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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 |
| (...skipping 23 matching lines...) Expand all Loading... |
| 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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