w32mcastcfg.hxx

RTP协议

#ifndef W32McastCfg_hxx
#define W32McastCfg_hxx

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */





static const char* const W32McastCfgHeaderVersion =
    "$Id: W32McastCfg.hxx,v 1.1 2002/08/23 01:08:26 sprajpat Exp $";


/* Multicast related definitions */


/* These are definitions specific ti IP multicast */


#define IP_MULTICAST_IF     2           /* set/get IP multicast interface   */
#define IP_MULTICAST_TTL    3           /* set/get IP multicast timetolive  */
#define IP_MULTICAST_LOOP   4           /* set/get IP multicast loopback    */
#define IP_ADD_MEMBERSHIP   5           /* add  an IP group membership      */
#define IP_DROP_MEMBERSHIP  6           /* drop an IP group membership      */


#define IP_DEFAULT_MULTICAST_TTL   1    /* normally limit m'casts to 1 hop  */
#define IP_DEFAULT_MULTICAST_LOOP  1    /* normally hear sends if a member  */
#define IP_MAX_MEMBERSHIPS         20   /* per socket; must fit in one mbuf */

/*
 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 */
struct ip_mreq {
        struct in_addr  imr_multiaddr;  /* IP multicast address of group */
        struct in_addr  imr_interface;  /* local IP address of interface */
};


#endif