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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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| 48 QuicByteCount bytes_in_flight, | 48 QuicByteCount bytes_in_flight, |
| 49 const CongestionVector& acked_packets, | 49 const CongestionVector& acked_packets, |
| 50 const CongestionVector& lost_packets) override; | 50 const CongestionVector& lost_packets) override; |
| 51 bool OnPacketSent(QuicTime sent_time, | 51 bool OnPacketSent(QuicTime sent_time, |
| 52 QuicByteCount bytes_in_flight, | 52 QuicByteCount bytes_in_flight, |
| 53 QuicPacketNumber packet_number, | 53 QuicPacketNumber packet_number, |
| 54 QuicByteCount bytes, | 54 QuicByteCount bytes, |
| 55 HasRetransmittableData is_retransmittable) override; | 55 HasRetransmittableData is_retransmittable) override; |
| 56 void OnRetransmissionTimeout(bool packets_retransmitted) override; | 56 void OnRetransmissionTimeout(bool packets_retransmitted) override; |
| 57 void OnConnectionMigration() override; | 57 void OnConnectionMigration() override; |
| 58 QuicTime::Delta TimeUntilSend( | 58 QuicTime::Delta TimeUntilSend(QuicTime now, |
| 59 QuicTime now, | 59 QuicByteCount bytes_in_flight) const override; |
| 60 QuicByteCount bytes_in_flight, | |
| 61 HasRetransmittableData has_retransmittable_data) const override; | |
| 62 QuicBandwidth PacingRate() const override; | 60 QuicBandwidth PacingRate() const override; |
| 63 QuicBandwidth BandwidthEstimate() const override; | 61 QuicBandwidth BandwidthEstimate() const override; |
| 64 QuicTime::Delta RetransmissionDelay() const override; | 62 QuicTime::Delta RetransmissionDelay() const override; |
| 65 QuicByteCount GetCongestionWindow() const override; | 63 QuicByteCount GetCongestionWindow() const override; |
| 66 bool InSlowStart() const override; | 64 bool InSlowStart() const override; |
| 67 bool InRecovery() const override; | 65 bool InRecovery() const override; |
| 68 QuicByteCount GetSlowStartThreshold() const override; | 66 QuicByteCount GetSlowStartThreshold() const override; |
| 69 CongestionControlType GetCongestionControlType() const override; | 67 CongestionControlType GetCongestionControlType() const override; |
| 70 // End implementation of SendAlgorithmInterface. | 68 // End implementation of SendAlgorithmInterface. |
| 71 | 69 |
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| 82 QuicTime last_delayed_packet_sent_time_; | 80 QuicTime last_delayed_packet_sent_time_; |
| 83 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. | 81 QuicTime ideal_next_packet_send_time_; // When can the next packet be sent. |
| 84 mutable bool was_last_send_delayed_; // True when the last send was delayed. | 82 mutable bool was_last_send_delayed_; // True when the last send was delayed. |
| 85 | 83 |
| 86 DISALLOW_COPY_AND_ASSIGN(PacingSender); | 84 DISALLOW_COPY_AND_ASSIGN(PacingSender); |
| 87 }; | 85 }; |
| 88 | 86 |
| 89 } // namespace net | 87 } // namespace net |
| 90 | 88 |
| 91 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 89 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
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