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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 // | |
| 5 // The pure virtual class for send side loss detection algorithm. | |
| 6 | |
| 7 #ifndef NET_QUIC_CONGESTION_CONTROL_LOSS_DETECTION_INTERFACE_H_ | |
| 8 #define NET_QUIC_CONGESTION_CONTROL_LOSS_DETECTION_INTERFACE_H_ | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "net/quic/quic_protocol.h" | |
| 12 #include "net/quic/quic_time.h" | |
| 13 | |
| 14 namespace net { | |
| 15 | |
| 16 class QuicUnackedPacketMap; | |
| 17 class RttStats; | |
| 18 | |
| 19 class NET_EXPORT_PRIVATE LossDetectionInterface { | |
| 20 public: | |
| 21 // Creates a TCP loss detector. | |
| 22 static LossDetectionInterface* Create(LossDetectionType loss_type); | |
| 23 | |
| 24 virtual ~LossDetectionInterface() {} | |
| 25 | |
| 26 virtual LossDetectionType GetLossDetectionType() const = 0; | |
| 27 | |
| 28 // Called when a new ack arrives or the loss alarm fires. | |
| 29 virtual SequenceNumberSet DetectLostPackets( | |
| 30 const QuicUnackedPacketMap& unacked_packets, | |
| 31 const QuicTime& time, | |
| 32 QuicPacketSequenceNumber largest_observed, | |
| 33 const RttStats& rtt_stats) = 0; | |
| 34 | |
| 35 // Get the time the LossDetectionAlgorithm wants to re-evaluate losses. | |
| 36 // Returns QuicTime::Zero if no alarm needs to be set. | |
| 37 virtual QuicTime GetLossTimeout() const = 0; | |
| 38 }; | |
| 39 | |
| 40 } // namespace net | |
| 41 | |
| 42 #endif // NET_QUIC_CONGESTION_CONTROL_LOSS_DETECTION_INTERFACE_H_ | |
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