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TahoeCongAvoid.hpp

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 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
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 * Copyright (C) 2004-2007
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 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
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 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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#ifndef TCP_TAHOECONGAVOID_HPP
#define TCP_TAHOECONGAVIOD_HPP

#include <WNS/logger/Logger.hpp>
#include <WNS/pyconfig/View.hpp>

#include <WNS/container/Registry.hpp>

#include <TCP/CongestionControlStrategy.hpp>


namespace tcp {

    class TahoeCongAvoid :
        virtual public CongestionAvoidanceStrategy
    {

    public:
        TahoeCongAvoid(const wns::pyconfig::View& _pyco);

        virtual
        ~TahoeCongAvoid();

        virtual void
        onSegmentLoss(segmentLoss _sl, unsigned long int _ackNR);

        virtual void
        onRTTSample();

        virtual unsigned long int
        getWindowSize();

        virtual simTimeType
        getRetransmissionTimeout();

        virtual void
        onSegmentAcknowledged();

        virtual void
        setWindowSize(unsigned long int new_cwnd);

        virtual bool
        duplicateACKThresholdReached(unsigned long int _ackNR);

        virtual void
        clearDuplicateACKCounter();

    private:
        std::string
        printReason(segmentLoss reason);

        wns::pyconfig::View pyco;

        unsigned long int cwnd;

        unsigned long int cwnd_cnt;

        wns::logger::Logger logger;

        simTimeType timeout;

        int ndup;

        wns::container::Registry<unsigned long int, int> countDuplicateACKs;
    };
} // namespace tcp


#endif // NOT defined TCP_TAHOECONGAVOID_HPP

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