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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 // The pure virtual class for send side congestion control algorithm. | 5 // The pure virtual class for send side congestion control algorithm. |
6 | 6 |
7 #ifndef NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ | 7 #ifndef NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ |
8 #define NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ | 8 #define NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
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65 virtual bool OnPacketSent(QuicTime sent_time, | 65 virtual bool OnPacketSent(QuicTime sent_time, |
66 QuicByteCount bytes_in_flight, | 66 QuicByteCount bytes_in_flight, |
67 QuicPacketSequenceNumber sequence_number, | 67 QuicPacketSequenceNumber sequence_number, |
68 QuicByteCount bytes, | 68 QuicByteCount bytes, |
69 HasRetransmittableData is_retransmittable) = 0; | 69 HasRetransmittableData is_retransmittable) = 0; |
70 | 70 |
71 // Called when the retransmission timeout fires. Neither OnPacketAbandoned | 71 // Called when the retransmission timeout fires. Neither OnPacketAbandoned |
72 // nor OnPacketLost will be called for these packets. | 72 // nor OnPacketLost will be called for these packets. |
73 virtual void OnRetransmissionTimeout(bool packets_retransmitted) = 0; | 73 virtual void OnRetransmissionTimeout(bool packets_retransmitted) = 0; |
74 | 74 |
75 // Called when the last retransmission timeout was spurious. | |
76 virtual void RevertRetransmissionTimeout() = 0; | |
77 | |
78 // Calculate the time until we can send the next packet. | 75 // Calculate the time until we can send the next packet. |
79 virtual QuicTime::Delta TimeUntilSend( | 76 virtual QuicTime::Delta TimeUntilSend( |
80 QuicTime now, | 77 QuicTime now, |
81 QuicByteCount bytes_in_flight, | 78 QuicByteCount bytes_in_flight, |
82 HasRetransmittableData has_retransmittable_data) const = 0; | 79 HasRetransmittableData has_retransmittable_data) const = 0; |
83 | 80 |
84 // The pacing rate of the send algorithm. May be zero if the rate is unknown. | 81 // The pacing rate of the send algorithm. May be zero if the rate is unknown. |
85 virtual QuicBandwidth PacingRate() const = 0; | 82 virtual QuicBandwidth PacingRate() const = 0; |
86 | 83 |
87 // What's the current estimated bandwidth in bytes per second. | 84 // What's the current estimated bandwidth in bytes per second. |
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117 | 114 |
118 // Called by the Session when we get a bandwidth estimate from the client. | 115 // Called by the Session when we get a bandwidth estimate from the client. |
119 // Returns true if initial connection state is changed as a result. | 116 // Returns true if initial connection state is changed as a result. |
120 virtual bool ResumeConnectionState( | 117 virtual bool ResumeConnectionState( |
121 const CachedNetworkParameters& cached_network_params) = 0; | 118 const CachedNetworkParameters& cached_network_params) = 0; |
122 }; | 119 }; |
123 | 120 |
124 } // namespace net | 121 } // namespace net |
125 | 122 |
126 #endif // NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ | 123 #endif // NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_ |
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