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 3 // found in the LICENSE file. 4 // 5 // The pure virtual class for receive side congestion algorithm. 6 7 #ifndef NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_ 8 #define NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_ 9 10 #include "base/basictypes.h" 11 #include "net/base/net_export.h" 12 #include "net/quic/quic_clock.h" 13 #include "net/quic/quic_protocol.h" 14 #include "net/quic/quic_time.h" 15 16 namespace net { 17 18 class NET_EXPORT_PRIVATE ReceiveAlgorithmInterface { 19 public: 20 static ReceiveAlgorithmInterface* Create(const QuicClock* clock, 21 CongestionFeedbackType type); 22 23 virtual ~ReceiveAlgorithmInterface() {} 24 25 // Returns false if no QuicCongestionFeedbackFrame block is needed. 26 // Otherwise fills in feedback and return true. 27 virtual bool GenerateCongestionFeedback( 28 QuicCongestionFeedbackFrame* feedback) = 0; 29 30 // Should be called for each incoming packet. 31 // bytes: is the packet size in bytes including IP headers. 32 // sequence_number: is the unique sequence number from the QUIC packet header. 33 // timestamp: is the sent timestamp from the QUIC packet header. 34 // revived: is set if the packet is lost and then recovered with help of FEC 35 // (Forward Error Correction) packet(s). 36 virtual void RecordIncomingPacket(QuicByteCount bytes, 37 QuicPacketSequenceNumber sequence_number, 38 QuicTime timestamp, 39 bool revived) = 0; 40 }; 41 42 } // namespace net 43 44 #endif // NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_ 45
