RefCountedSocket.h

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/* Copyright (C) 2000 KOM/Darmstadt University of Technology
 *
 * You are allowed to use all other parts of the code under the following terms:
 *
 * For non-commercial use, code may be used in unmodified form provided
 * that this copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * This software is provided "as is" and without any express or implied
 * warranties, including, without limitation, the implied warranty of
 * fitness for a particular purpose.
 *
 * The code may be subjected to the GNU General Public License, Version 2,
 * and re-distributed under the terms of this license.
 * As a special exception, permission is granted to link this code
 * with the Qt library and distribute executables, as long as you
 * follow the requirements of the GNU GPL in regard to all of the
 * software in the executable aside from Qt.
 *
 * Commercial use other than under the terms of the GNU General Public
 * License is allowed only after express negotiation of conditions
 * with the authors.
 */
#ifndef MN_RTP_REF_COUNTED_SOCKET_H
#define MN_RTP_REF_COUNTED_SOCKET_H


#include <assert.h>
#include <stdio.h>
#include <sys/types.h>

#include "MNArrayList.h"
#include "DatagramSocket.h"
#include "MNMutex.h"
#include "MNValid.h"

class RefCountedSocket;
class RefCountedSocketFactory;
class RefCountingSocket;
class MNRope;

/**********************************************************************/
/* RefCountedSocket                                                   */
/**********************************************************************/

class RefCountedSocket : public DatagramSocket
{
    DECLARE_VALID

private:
    struct MulticastInfo
    {
        MNUDPServerSocket::Interfaces* _iface;

        int _port;

        char* _addr;

        bool _joined;

        MulticastInfo();

        ~MulticastInfo();
    };

    size_t _refCtr;

    MNArrayList<RefCountingSocket*> _notificationList;

    MulticastInfo _mc;

    RefCountedSocketFactory* _factory;

private:
    RefCountedSocket( const RefCountedSocket& );

    RefCountedSocket& operator=( const RefCountedSocket& );

public:
    RefCountedSocket( RefCountedSocketFactory* factory,
                      MNSelector&        sel,
                      MNSocket&          sock );

    RefCountedSocket( RefCountedSocketFactory* factory,
                      MNSelector&        sel,
                      int                port );
    
    virtual ~RefCountedSocket( );

    void attach( );

    void detach( );

    void startReading( RefCountingSocket* s, bool sender );

    void stopReading( RefCountingSocket* s );

    bool release( RefCountingSocket* s );

    virtual int reader ( struct iovec*        iov,
                         int                  len,
                         struct sockaddr_in*& dest );

    virtual int reader ( MNRope*&             rope,
                         struct sockaddr_in*& dest );

    
     virtual void writer ( );

    virtual void connection_closed( );

    struct ifi_info* get_ifi_info(int family, int doaliases);

    bool join_multicast( int port, const char* address );

    bool is_multicast_joined( ) const;

    void leaveMulticast( );

    void set_multicast_ttl( int val );

    int  get_multicast_ttl( );

    void set_multicast_if( const char* ifname );

    int send( struct iovec* iov,
              size_t        iov_size,
              int           target_port,
              const char*   target_host );

    int send( struct iovec*             iov,
              size_t                    iov_size,
              const struct sockaddr_in& sock_addr );

    int send( MNRope*                   rope,
              const struct sockaddr_in& sock_addr );
};

#endif /* MN_RTP_REF_COUNTED_SOCKET_H */

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