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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 |
| 11 #ifndef NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 11 #ifndef NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
| 12 #define NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 12 #define NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
| 13 | 13 |
| 14 #include <stdint.h> | 14 #include <stdint.h> |
| 15 | 15 |
| 16 #include <map> | 16 #include <map> |
| 17 #include <memory> | 17 #include <memory> |
| 18 | 18 |
| 19 #include "base/macros.h" | 19 #include "base/macros.h" |
| 20 #include "net/quic/congestion_control/send_algorithm_interface.h" | 20 #include "net/quic/core/congestion_control/send_algorithm_interface.h" |
| 21 #include "net/quic/quic_bandwidth.h" | 21 #include "net/quic/core/quic_bandwidth.h" |
| 22 #include "net/quic/quic_config.h" | 22 #include "net/quic/core/quic_config.h" |
| 23 #include "net/quic/quic_protocol.h" | 23 #include "net/quic/core/quic_protocol.h" |
| 24 #include "net/quic/quic_time.h" | 24 #include "net/quic/core/quic_time.h" |
| 25 | 25 |
| 26 namespace net { | 26 namespace net { |
| 27 | 27 |
| 28 class NET_EXPORT_PRIVATE PacingSender : public SendAlgorithmInterface { | 28 class NET_EXPORT_PRIVATE PacingSender : public SendAlgorithmInterface { |
| 29 public: | 29 public: |
| 30 // Create a PacingSender to wrap the specified sender. |alarm_granularity| | 30 // Create a PacingSender to wrap the specified sender. |alarm_granularity| |
| 31 // indicates to the pacer to send that far into the future, since it should | 31 // indicates to the pacer to send that far into the future, since it should |
| 32 // not expect a callback before that time delta. |initial_packet_burst| is | 32 // not expect a callback before that time delta. |initial_packet_burst| is |
| 33 // the number of packets sent without pacing after quiescence. | 33 // the number of packets sent without pacing after quiescence. |
| 34 PacingSender(SendAlgorithmInterface* sender, | 34 PacingSender(SendAlgorithmInterface* sender, |
| (...skipping 49 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 84 QuicTime last_delayed_packet_sent_time_; | 84 QuicTime last_delayed_packet_sent_time_; |
| 85 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. |
| 86 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. |
| 87 | 87 |
| 88 DISALLOW_COPY_AND_ASSIGN(PacingSender); | 88 DISALLOW_COPY_AND_ASSIGN(PacingSender); |
| 89 }; | 89 }; |
| 90 | 90 |
| 91 } // namespace net | 91 } // namespace net |
| 92 | 92 |
| 93 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ | 93 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ |
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