TCPReceiveQueue.h

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//
// Copyright (C) 2004 Andras Varga
// Copyright (C) 2009 Thomas Reschka
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//

#ifndef __INET_TCPRECEIVEQUEUE_H
#define __INET_TCPRECEIVEQUEUE_H

#include <omnetpp.h>
#include "TCPConnection.h"


class TCPSegment;
class TCPCommand;


class INET_API TCPReceiveQueue : public cPolymorphic
{
  protected:
    TCPConnection *conn; // the connection that owns this queue

  public:
    TCPReceiveQueue()  {conn=NULL;}

    virtual ~TCPReceiveQueue() {}

    virtual void setConnection(TCPConnection *_conn)  {conn = _conn;}

    virtual void init(uint32 startSeq) = 0;

    virtual uint32 insertBytesFromSegment(TCPSegment *tcpseg) = 0;

    virtual cPacket *extractBytesUpTo(uint32 seq) = 0;

    virtual uint32 getAmountOfBufferedBytes() = 0;

    virtual uint32 getAmountOfFreeBytes(uint32 maxRcvBuffer) = 0;

    virtual uint32 getQueueLength() = 0;

    virtual void getQueueStatus() = 0;

    virtual uint32 getLE(uint32 fromSeqNum) = 0;

    virtual uint32 getRE(uint32 toSeqNum) = 0;
};

#endif