UDPConvergenceLayer.h

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/*
 * UDPConvergenceLayer.h
 *
 * Copyright (C) 2011 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef UDPCONVERGENCELAYER_H_
#define UDPCONVERGENCELAYER_H_

#include "Component.h"
#include "net/ConvergenceLayer.h"
#include <ibrcommon/Exceptions.h>
#include "net/DiscoveryBeaconHandler.h"
#include <ibrcommon/net/vinterface.h>
#include <ibrcommon/net/socket.h>
#include <ibrcommon/net/vsocket.h>
#include <ibrcommon/link/LinkManager.h>


namespace dtn
{
        namespace net
        {
                class UDPConvergenceLayer : public ConvergenceLayer, public dtn::daemon::IndependentComponent, public DiscoveryBeaconHandler, public ibrcommon::LinkManager::EventCallback
                {
                public:
                        UDPConvergenceLayer(ibrcommon::vinterface net, int port, dtn::data::Length mtu = 1280);

                        virtual ~UDPConvergenceLayer();

                        void onUpdateBeacon(const ibrcommon::vinterface &iface, DiscoveryBeacon &announcement)
                                throw (dtn::net::DiscoveryBeaconHandler::NoServiceHereException);

                        dtn::core::Node::Protocol getDiscoveryProtocol() const;

                        void queue(const dtn::core::Node &n, const dtn::net::BundleTransfer &job);

                        virtual const std::string getName() const;

                        void eventNotify(const ibrcommon::LinkEvent &evt);

                        virtual void resetStats();

                        virtual void getStats(ConvergenceLayer::stats_data &data) const;

                protected:
                        virtual void componentUp() throw ();
                        virtual void componentRun() throw ();
                        virtual void componentDown() throw ();
                        void __cancellation() throw ();

                private:
                        void receive(dtn::data::Bundle&, dtn::data::EID &sender) throw (ibrcommon::socket_exception, dtn::InvalidDataException);
                        void send(const ibrcommon::vaddress &addr, const std::string &data) throw (ibrcommon::socket_exception, NoAddressFoundException);

                        ibrcommon::vsocket _vsocket;
                        ibrcommon::vinterface _net;
                        int _port;

                        static const int DEFAULT_PORT;

                        dtn::data::Length m_maxmsgsize;

                        ibrcommon::Mutex m_writelock;
                        ibrcommon::Mutex m_readlock;

                        bool _running;

                        // stats variables
                        size_t _stats_in;
                        size_t _stats_out;
                };
        }
}

#endif /*UDPCONVERGENCELAYER_H_*/