UDPDatagramService.h

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/*
 * UDPDatagramService.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 UDPDATAGRAMSERVICE_H_
#define UDPDATAGRAMSERVICE_H_

#include "net/DatagramConvergenceLayer.h"
#include "net/DatagramService.h"
#include <ibrcommon/net/vsocket.h>
#include <ibrcommon/net/vinterface.h>

namespace dtn
{
        namespace net
        {
                class UDPDatagramService : public dtn::net::DatagramService
                {
                public:
                        UDPDatagramService(const ibrcommon::vinterface &iface, int port, size_t mtu = 1280);
                        virtual ~UDPDatagramService();

                        virtual void bind() throw (DatagramException);

                        virtual void shutdown();

                        virtual void send(const char &type, const char &flags, const unsigned int &seqno, const std::string &address, const char *buf, size_t length) throw (DatagramException);

                        virtual void send(const char &type, const char &flags, const unsigned int &seqno, const char *buf, size_t length) throw (DatagramException);

                        virtual size_t recvfrom(char *buf, size_t length, char &type, char &flags, unsigned int &seqno, std::string &address) throw (DatagramException);

                        virtual const std::string getServiceTag() const;

                        virtual const std::string getServiceDescription() const;

                        virtual const ibrcommon::vinterface& getInterface() const;

                        virtual dtn::core::Node::Protocol getProtocol() const;

                        virtual const DatagramService::Parameter& getParameter() const;

                private:
                        void send(const char &type, const char &flags, const unsigned int &seqno, const ibrcommon::vaddress &destination, const char *buf, size_t length) throw (DatagramException);

                        static const std::string encode(const ibrcommon::vaddress &address, const int port = 0);
                        static void decode(const std::string &identifier, ibrcommon::vaddress &address);

                        ibrcommon::vsocket _vsocket;

                        const static int BROADCAST_PORT = 5551;
                        const static ibrcommon::vaddress BROADCAST_ADDR;

                        ibrcommon::multicastsocket *_msock;

                        const ibrcommon::vinterface _iface;
                        const int _bind_port;

                        DatagramService::Parameter _params;
                };

        } /* namespace net */
} /* namespace dtn */
#endif /* UDPDATAGRAMSERVICE_H_ */