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CSMACA.hpp

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/******************************************************************************
 * Glue                                                                       *
 * __________________________________________________________________________ *
 *                                                                            *
 * Copyright (C) 2005-2006                                                    *
 * Lehrstuhl fuer Kommunikationsnetze (ComNets)                               *
 * Kopernikusstr. 16, D-52074 Aachen, Germany                                 *
 * phone: ++49-241-80-27910 (phone), fax: ++49-241-80-22242                   *
 * email: wns@comnets.rwth-aachen.de                                          *
 * www: http://wns.comnets.rwth-aachen.de                                     *
 ******************************************************************************/

#ifndef GLUE_MAC_CSMACA_HPP
#define GLUE_MAC_CSMACA_HPP

#include <GLUE/mac/Backoff.hpp>

#include <WNS/ldk/FunctionalUnit.hpp>
#include <WNS/ldk/CommandTypeSpecifier.hpp>
#include <WNS/ldk/Command.hpp>
#include <WNS/ldk/HasReceptor.hpp>
#include <WNS/ldk/HasConnector.hpp>
#include <WNS/ldk/HasDeliverer.hpp>
#include <WNS/ldk/arq/StopAndWait.hpp>
#include <WNS/logger/Logger.hpp>
#include <WNS/Cloneable.hpp>
#include <WNS/service/phy/copper/DataTransmissionFeedback.hpp>
#include <WNS/service/phy/copper/CarrierSensing.hpp>
#include <WNS/Observer.hpp>
#include <WNS/simulator/Time.hpp>

namespace glue { namespace mac {

    class CSMACACommand :
        public wns::ldk::Command
    {
    public:
        struct {
        } local;

        struct {
        } peer;

        struct {
        } magic;
    };

    class CSMACA :
        public wns::ldk::FunctionalUnit,
        public wns::ldk::CommandTypeSpecifier<CSMACACommand>,
        public wns::ldk::HasReceptor<>,
        public wns::ldk::HasConnector<>,
        public wns::ldk::HasDeliverer<>,
        public wns::Cloneable<CSMACA>,
        public virtual BackoffObserver
    {
    public:

        CSMACA(wns::ldk::fun::FUN* fun, const wns::pyconfig::View& config);

        virtual
        ~CSMACA();

    private:
        // FunctionalUnit / CompoundHandlerInterface
        virtual bool
        doIsAccepting(const wns::ldk::CompoundPtr& _compound) const;

        virtual void
        doSendData(const wns::ldk::CompoundPtr& _compound);

        virtual void
        doWakeup();

        virtual void
        doOnData(const wns::ldk::CompoundPtr& _compound);

        virtual void
        onFUNCreated();

        virtual void
        backoffExpired();

        virtual void
        onCarrierIdle();

        virtual void
        sifsExpired();

        wns::logger::Logger logger;

        wns::ldk::CompoundPtr iFrame;
        wns::ldk::CompoundPtr ackFrame;

        std::string stopAndWaitARQName;
        wns::ldk::arq::StopAndWait* stopAndWaitARQ;

        Backoff backoff;
        wns::simulator::Time sifsLength;
    };


    class StopAndWait :
        public wns::ldk::arq::StopAndWait,
        public wns::Observer<wns::service::phy::copper::DataTransmissionFeedbackInterface>,
        public wns::Observer<wns::service::phy::copper::CarrierSensing>
    {
    public:
        StopAndWait(wns::ldk::fun::FUN* fuNet, const wns::pyconfig::View& config);

        virtual wns::ldk::CompoundPtr getData();

        virtual void    onTimeout();

        // observer DataTransmissionFeedbackInterface
        virtual void    onDataSent(wns::osi::PDUPtr pdu);

        // observer CarrierSensing
        virtual void    onCarrierIdle();
        virtual void    onCarrierBusy();
        virtual void    onCollision();
    
    private:
        double shortResendTimeout;
        double longResendTimeout;
        bool waitingForAckTransmission;

        
    };
} // mac
} // glue

#endif // GLUE_MAC_CSMACA_HPP

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