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CongestionControl.hpp

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#ifndef TCP_CONGESTIONCONTROL_HPP
#define TCP_CONGESTIONCONTROL_HPP

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

#include <TCP/CongestionControlStrategy.hpp>


namespace tcp { 

    class SlowStart;

    namespace tests {
        class CongestionControlTest;
        class CumulativeACKTest;
    } // namespace tests

    class CongestionControl :
        virtual public CongestionControlStrategy
    {   
        friend class tests::CongestionControlTest;
        friend class tests::CumulativeACKTest;

    public:
        explicit
        CongestionControl(const wns::pyconfig::View& _pyco);

        virtual
        ~CongestionControl();

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

        virtual void
        onRTTSample();

        virtual unsigned long int
        getWindowSize();

        virtual simTimeType
        getRetransmissionTimeout();

        virtual void
        onSegmentAcknowledged();

        virtual bool
        duplicateACKThresholdReached(unsigned long int _ackNR);

        virtual void
        clearDuplicateACKCounter();

        CongestionControlStrategy*
        getCongestionControlMode();

    private:
        std::string
        printMode(Mode _mode);

        wns::pyconfig::View pyco;

        Mode mode;

        SlowStartStrategy* slowStart;

        CongestionAvoidanceStrategy* ca;

        wns::logger::Logger logger;

        virtual void
        setWindowSize(unsigned long int new_cwnd);

        void
        setCongestionControlMode(Mode _mode);

        unsigned long int
        getSlowStartThreshold();
    };
} // namespace tcp

#endif // NOT defined TCP_CONGESTIONCONTROL_HPP

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