TCPConvergenceLayer.h

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/*
 * TCPConvergenceLayer.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 TCPCONVERGENCELAYER_H_
#define TCPCONVERGENCELAYER_H_

#include "config.h"
#include "Component.h"

#include "core/Node.h"
#include "core/EventReceiver.h"
#include "net/ConvergenceLayer.h"
#include "net/TCPConnection.h"
#include "net/DiscoveryBeaconHandler.h"
#include "net/P2PDialupEvent.h"

#include <ibrcommon/link/LinkManager.h>
#include <ibrcommon/net/vsocket.h>
#include <ibrcommon/net/vinterface.h>
#include <ibrcommon/thread/Mutex.h>

#include <set>
#include <list>
#include <map>

namespace dtn
{
        namespace net
        {
                class TCPConvergenceLayer : public dtn::daemon::IndependentComponent, public dtn::core::EventReceiver<dtn::net::P2PDialupEvent>, public ConvergenceLayer, public DiscoveryBeaconHandler, public ibrcommon::LinkManager::EventCallback
                {
                        friend class TCPConnection;

                        const static std::string TAG;
                public:
                        TCPConvergenceLayer();

                        virtual ~TCPConvergenceLayer();

                        void add(const ibrcommon::vinterface &net, int port) throw ();

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

                        void open(const dtn::core::Node &n);

                        virtual const std::string getName() const;

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

                        void onUpdateBeacon(const ibrcommon::vinterface &iface, DiscoveryBeacon &beacon) throw (NoServiceHereException);

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

                        void raiseEvent(const dtn::net::P2PDialupEvent &evt) throw ();

                        virtual void resetStats();

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

                protected:
                        void __cancellation() throw ();

                        void componentUp() throw ();
                        void componentRun() throw ();
                        void componentDown() throw ();

                private:
                        void listen(const ibrcommon::vinterface &iface, int port) throw ();

                        void unlisten(const ibrcommon::vinterface &iface) throw ();

                        void closeAll();

                        void connectionUp(TCPConnection *conn);

                        void connectionDown(TCPConnection *conn);

                        void addTrafficIn(size_t) throw ();

                        void addTrafficOut(size_t) throw ();

                        static const int DEFAULT_PORT;

                        ibrcommon::vsocket _vsocket;
                        bool _vsocket_state;

                        ibrcommon::Conditional _connections_cond;
                        std::list<TCPConnection*> _connections;

                        ibrcommon::Mutex _interface_lock;
                        std::set<ibrcommon::vinterface> _interfaces;

                        ibrcommon::Mutex _portmap_lock;
                        std::map<ibrcommon::vinterface, unsigned int> _portmap;
                        unsigned int _any_port;

                        // stats variables
                        ibrcommon::Mutex _stats_lock;
                        size_t _stats_in;
                        size_t _stats_out;

                        const size_t _keepalive_timeout;
                };
        }
}

#endif /* TCPCONVERGENCELAYER_H_ */