ibrdtn/ibrdtn/streams/StreamContactHeader.h

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/*
 * StreamContactHeader.h
 *
 *  Created on: 30.06.2009
 *      Author: morgenro
 */



#ifndef STREAMCONTACTHEADER_H_
#define STREAMCONTACTHEADER_H_


#include "ibrdtn/data/EID.h"
#include "ibrdtn/data/Exceptions.h"
#include <sys/types.h>


using namespace dtn::data;

namespace dtn
{
        namespace streams
        {
                static const unsigned char TCPCL_VERSION = 3;

                class StreamContactHeader
                {
                public:
                        enum HEADER_BITS
                        {
                                REQUEST_ACKNOWLEDGMENTS = 1 << 0,
                                REQUEST_FRAGMENTATION = 1 << 1,
                                REQUEST_NEGATIVE_ACKNOWLEDGMENTS = 1 << 2,
                                /* this flag is implementation specific and not in the draft */
                                REQUEST_TLS = 1 << 7
                        };

                        StreamContactHeader();
                        StreamContactHeader(EID localeid);
                        virtual ~StreamContactHeader();

                        StreamContactHeader& operator=(const StreamContactHeader &other);

                        const EID getEID() const;

                        EID _localeid;
                        char _flags;
                        u_int16_t _keepalive;

                        friend std::ostream &operator<<(std::ostream &stream, const StreamContactHeader &h);
                        friend std::istream &operator>>(std::istream &stream, StreamContactHeader &h);
                };
        }
}

#endif /* STREAMCONTACTHEADER_H_ */