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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// The pure virtual class for receive side congestion algorithm.
#ifndef NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_
#define NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_
#include "base/basictypes.h"
#include "net/base/net_export.h"
#include "net/quic/quic_clock.h"
#include "net/quic/quic_protocol.h"
#include "net/quic/quic_time.h"
namespace net {
class NET_EXPORT_PRIVATE ReceiveAlgorithmInterface {
public:
static ReceiveAlgorithmInterface* Create(const QuicClock* clock,
CongestionFeedbackType type);
virtual ~ReceiveAlgorithmInterface() {}
// Returns false if no QuicCongestionFeedbackFrame block is needed.
// Otherwise fills in feedback and return true.
virtual bool GenerateCongestionFeedback(
QuicCongestionFeedbackFrame* feedback) = 0;
// Should be called for each incoming packet.
// bytes: is the packet size in bytes including IP headers.
// sequence_number: is the unique sequence number from the QUIC packet header.
// timestamp: is the sent timestamp from the QUIC packet header.
// revived: is set if the packet is lost and then recovered with help of FEC
// (Forward Error Correction) packet(s).
virtual void RecordIncomingPacket(QuicByteCount bytes,
QuicPacketSequenceNumber sequence_number,
QuicTime timestamp,
bool revived) = 0;
};
} // namespace net
#endif // NET_QUIC_CONGESTION_CONTROL_RECEIVE_ALGORITHM_INTERFACE_H_
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