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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // TCP cubic send side congestion algorithm, emulates the behavior of | 5 // TCP cubic send side congestion algorithm, emulates the behavior of |
| 6 // TCP cubic. | 6 // TCP cubic. |
| 7 | 7 |
| 8 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ | 8 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ |
| 9 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ | 9 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
| 13 #include "net/base/net_export.h" | 13 #include "net/base/net_export.h" |
| 14 #include "net/quic/congestion_control/cubic.h" | 14 #include "net/quic/congestion_control/cubic.h" |
| 15 #include "net/quic/congestion_control/hybrid_slow_start.h" | 15 #include "net/quic/congestion_control/hybrid_slow_start.h" |
| 16 #include "net/quic/congestion_control/send_algorithm_interface.h" | 16 #include "net/quic/congestion_control/send_algorithm_interface.h" |
| 17 #include "net/quic/quic_bandwidth.h" | 17 #include "net/quic/quic_bandwidth.h" |
| 18 #include "net/quic/quic_connection_stats.h" |
| 18 #include "net/quic/quic_protocol.h" | 19 #include "net/quic/quic_protocol.h" |
| 19 #include "net/quic/quic_time.h" | 20 #include "net/quic/quic_time.h" |
| 20 | 21 |
| 21 namespace net { | 22 namespace net { |
| 22 | 23 |
| 23 // Default maximum packet size used in Linux TCP implementations. | 24 // Default maximum packet size used in Linux TCP implementations. |
| 24 const QuicByteCount kDefaultTCPMSS = 1460; | 25 const QuicByteCount kDefaultTCPMSS = 1460; |
| 25 | 26 |
| 26 namespace test { | 27 namespace test { |
| 27 class TcpCubicSenderPeer; | 28 class TcpCubicSenderPeer; |
| 28 } // namespace test | 29 } // namespace test |
| 29 | 30 |
| 30 class NET_EXPORT_PRIVATE TcpCubicSender : public SendAlgorithmInterface { | 31 class NET_EXPORT_PRIVATE TcpCubicSender : public SendAlgorithmInterface { |
| 31 public: | 32 public: |
| 32 // Reno option and max_tcp_congestion_window are provided for testing. | 33 // Reno option and max_tcp_congestion_window are provided for testing. |
| 33 TcpCubicSender(const QuicClock* clock, | 34 TcpCubicSender(const QuicClock* clock, |
| 34 bool reno, | 35 bool reno, |
| 35 QuicTcpCongestionWindow max_tcp_congestion_window); | 36 QuicTcpCongestionWindow max_tcp_congestion_window, |
| 37 QuicConnectionStats* stats); |
| 36 virtual ~TcpCubicSender(); | 38 virtual ~TcpCubicSender(); |
| 37 | 39 |
| 38 // Start implementation of SendAlgorithmInterface. | 40 // Start implementation of SendAlgorithmInterface. |
| 39 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; | 41 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; |
| 40 virtual void OnIncomingQuicCongestionFeedbackFrame( | 42 virtual void OnIncomingQuicCongestionFeedbackFrame( |
| 41 const QuicCongestionFeedbackFrame& feedback, | 43 const QuicCongestionFeedbackFrame& feedback, |
| 42 QuicTime feedback_receive_time) OVERRIDE; | 44 QuicTime feedback_receive_time) OVERRIDE; |
| 43 virtual void OnPacketAcked(QuicPacketSequenceNumber acked_sequence_number, | 45 virtual void OnPacketAcked(QuicPacketSequenceNumber acked_sequence_number, |
| 44 QuicByteCount acked_bytes) OVERRIDE; | 46 QuicByteCount acked_bytes) OVERRIDE; |
| 45 virtual void OnPacketLost(QuicPacketSequenceNumber largest_loss, | 47 virtual void OnPacketLost(QuicPacketSequenceNumber largest_loss, |
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| 130 // Approximation of standard deviation, the error is roughly 1.25 times | 132 // Approximation of standard deviation, the error is roughly 1.25 times |
| 131 // larger than the standard deviation, for a normally distributed signal. | 133 // larger than the standard deviation, for a normally distributed signal. |
| 132 QuicTime::Delta mean_deviation_; | 134 QuicTime::Delta mean_deviation_; |
| 133 | 135 |
| 134 DISALLOW_COPY_AND_ASSIGN(TcpCubicSender); | 136 DISALLOW_COPY_AND_ASSIGN(TcpCubicSender); |
| 135 }; | 137 }; |
| 136 | 138 |
| 137 } // namespace net | 139 } // namespace net |
| 138 | 140 |
| 139 #endif // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ | 141 #endif // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ |
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