LOWPANConvergenceLayer.h

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/*
 * LOWPANConnection.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 LOWPANCONVERGENCELAYER_H_
#define LOWPANCONVERGENCELAYER_H_

#include "Component.h"
#include "core/EventReceiver.h"
#include "net/ConvergenceLayer.h"
#include "net/LOWPANConnection.h"
#include "net/DiscoveryAgent.h"
#include "net/DiscoveryServiceProvider.h"
#include <ibrcommon/net/vinterface.h>
#include <ibrcommon/net/vsocket.h>
#include <ibrcommon/net/lowpanstream.h>

#include <vector>
#include <list>

using namespace dtn::data;

namespace dtn
{
        namespace net
        {
                class LOWPANConnection;
                class LOWPANConvergenceLayer : public DiscoveryAgent, public ConvergenceLayer, public dtn::daemon::IndependentComponent, public ibrcommon::lowpanstream_callback, public EventReceiver, public DiscoveryServiceProvider
                {
                public:
                        LOWPANConvergenceLayer(const ibrcommon::vinterface &net, uint16_t panid, unsigned int mtu = 115); //MTU is actually 127...

                        virtual ~LOWPANConvergenceLayer();

                        void update(const ibrcommon::vinterface &iface, DiscoveryAnnouncement &announcement)
                                throw(dtn::net::DiscoveryServiceProvider::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;

                        virtual void raiseEvent(const Event *evt) throw ();

                        virtual void send_cb(const char *buf, const size_t len, const ibrcommon::vaddress &addr);

                        static const size_t BUFF_SIZE = 115;

                        void remove(const LOWPANConnection *conn);

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

                        virtual void sendAnnoucement(const uint16_t &sn, std::list<dtn::net::DiscoveryServiceProvider*> &providers);

                private:
                        ibrcommon::vsocket _vsocket;

                        ibrcommon::vaddress _addr_broadcast;
                        ibrcommon::vinterface _net;
                        uint16_t _panid;
                        std::vector<char> _ipnd_buf;
                        int _ipnd_buf_len;

                        ibrcommon::Mutex _connection_lock;
                        std::list<LOWPANConnection*> ConnectionList;
                        LOWPANConnection* getConnection(const ibrcommon::vaddress &addr);

                        unsigned int m_maxmsgsize;

                        ibrcommon::Mutex m_writelock;

                        bool _running;
                };
        }
}
#endif /*LOWPANCONVERGENCELAYER_H_*/