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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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