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 ~LossDetectionInterface()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_ 43