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VirtualARP.hpp

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/*******************************************************************************
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 5, D-52074 Aachen, Germany
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 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS 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
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#ifndef IP_VIRTUALARP_HPP
#define IP_VIRTUALARP_HPP

#include <WNS/service/nl/Address.hpp>
#include <WNS/service/dll/DataTransmission.hpp>
#include <WNS/node/component/Component.hpp>
#include <WNS/container/Registry.hpp>
#include <WNS/ldk/fun/Main.hpp>
#include <WNS/ldk/Layer.hpp>
#include <WNS/logger/Logger.hpp>
#include <WNS/Singleton.hpp>

#include <WNS/Subject.hpp>

namespace ip {

    class ResolveCallback
    {
    public:
        virtual ~ResolveCallback() {}

        virtual void
        onAddressResolved(wns::service::dll::UnicastAddress) = 0;
    };

    class VirtualARP:
            virtual public wns::ldk::Layer,
            public wns::node::component::Component
    {
    public:
        typedef wns::service::nl::Address NLAddress;
        typedef wns::service::dll::UnicastAddress DLLAddress;
        typedef wns::container::Registry<NLAddress, DLLAddress> ARPContainer;

        VirtualARP(
            wns::node::Interface* _node,
            const wns::pyconfig::View& _pyco);

        virtual void
        doStartup();

        virtual ~VirtualARP();


        void
        request(ResolveCallback& requester, NLAddress ip);

        void
        bind(DLLAddress macid, NLAddress ip);

        void
        unbind(NLAddress ip);

        virtual void
        onNodeCreated();

        virtual void
        onWorldCreated();

        virtual void
        onShutdown();

    private:

        class ResolveTimeout
        {
        public:
            ResolveTimeout(ResolveCallback& _requester, wns::service::dll::UnicastAddress _address) :
                address(_address),
                requester(_requester)
            {
            }

            void
            operator()()
            {
                requester.onAddressResolved(address);
            }

        private:
            wns::service::dll::UnicastAddress address;
            ResolveCallback& requester;
        };

        simTimeType resolveDelay;

        wns::logger::Logger log;

        ARPContainer arpLookup;
    };

    class VirtualARPService {

    public:
        typedef wns::service::nl::Address Address;

        VirtualARPService();

        void
        addSubnet(std::string subnetIdentifier,
                  VirtualARP* server);

        VirtualARP*
        getZoneManager(std::string subnetIdentifier);

    private:
        wns::logger::Logger log;

        wns::container::Registry<std::string, VirtualARP*> servers;
    };

    typedef wns::SingletonHolder<VirtualARPService> TheARPService;

} // ip
#endif //_IP_VIRTUALARP_HPP

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