SCTPAlgorithm.h

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//
// Copyright (C) 2008 Irene Ruengeler
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//

#ifndef __SCTPALGORITHM_H
#define __SCTPALGORITHM_H

#include <omnetpp.h>
#include "SCTPAssociation.h"
#include "SCTPQueue.h"



class INET_API SCTPAlgorithm : public cPolymorphic
{
  protected:
    SCTPAssociation *assoc; // we belong to this association
    SCTPQueue *transmissionQ;
    SCTPQueue *retransmissionQ;

  public:
    SCTPAlgorithm() { assoc = NULL; transmissionQ = NULL; retransmissionQ = NULL; }

    virtual ~SCTPAlgorithm() {}

    inline void setAssociation(SCTPAssociation* _assoc)  {
        assoc           = _assoc;
        transmissionQ   = assoc->getTransmissionQueue();
        retransmissionQ = assoc->getRetransmissionQueue();
    }

    virtual void initialize() {}

    virtual SCTPStateVariables *createStateVariables() = 0;

    virtual void established(bool active) = 0;

    virtual void connectionClosed() = 0;

    virtual void processTimer(cMessage *timer, SCTPEventCode& event) = 0;

    virtual void sendCommandInvoked(SCTPPathVariables* path) = 0;

    virtual void receivedDataAck(uint32 firstSeqAcked) = 0;

    virtual void receivedDuplicateAck() = 0;

    virtual void receivedAckForDataNotYetSent(uint32 seq) = 0;

    virtual void sackSent() = 0;

    virtual void dataSent(uint32 fromseq) = 0;

};

#endif