UDPMultiCastNL.h

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 * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
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#ifndef __UDPMultiCastNL_hpp__
#define __UDPMultiCastNL_hpp__

#include <stdio.h>
#include <boost/utility.hpp>
#include <boost/asio/ip/udp.hpp>

#include "mw/nl/DistinctNL.h"
#include "mw/nl/Packet.h"
#include "mw/afp/Config.h"
#include "mw/common/Subject.h"

namespace famouso {
    namespace mw {
        namespace nl {

            class UDPMultiCastNL : public DistinctNL, boost::noncopyable {
                public:

                    struct info {
                        enum {
                            mtu = 8192,
                            payload = mtu - sizeof(famouso::mw::Subject) - sizeof(bool),
                        };
                    };

                    // type of an address
                    struct SNN {
                        boost::asio::ip::address snn;
                        famouso::mw::Subject s;
                        bool operator == (const SNN &s1) const {
                            return s == s1.s;
                        }
                    };

                    // type of a packet
                    typedef Packet<SNN> Packet_t;

                    typedef afp::MultiSubjectESeqReorderDuplicateConfig<SNN> AFP_Config;

                    UDPMultiCastNL();

                    ~UDPMultiCastNL();

                    void init();

                    void bind(const famouso::mw::Subject &s, SNN &snn);

                    void deliver(const Packet_t& p);

                    void fetch(Packet_t& p);

                    SNN lastPacketSNN();


                    void interrupt(const boost::system::error_code& error, size_t bytes_recvd);

                private:
                    boost::asio::ip::udp::socket m_socket;
                    boost::asio::ip::udp::endpoint m_endpoint_listen;
                    boost::asio::ip::udp::endpoint m_endpoint_from;
                    uint8_t m_buffer[info::mtu];   // Subject and Payload have to be sent
                    Packet_t m_incoming_packet;
            };

        }
    }
} // namespaces


#endif /* __UDPMultiCastNL_hpp__ */