C++ (Cpp) socket_mcttl4示例

示例#1

文件： ot_livesync.c 项目： cjmalloy/opentracker

void livesync_bind_mcast( ot_ip6 ip, uint16_t port) {
  char tmpip[4] = {0,0,0,0};
  char *v4ip;

  if( !ip6_isv4mapped(ip))
    exerr("v6 mcast support not yet available.");
  v4ip = ip+12;

  if( g_socket_in != -1 )
    exerr("Error: Livesync listen ip specified twice.");

  if( ( g_socket_in = socket_udp4( )) < 0)
    exerr("Error: Cant create live sync incoming socket." );
  ndelay_off(g_socket_in);

  if( socket_bind4_reuse( g_socket_in, tmpip, port ) == -1 )
    exerr("Error: Cant bind live sync incoming socket." );

  if( socket_mcjoin4( g_socket_in, groupip_1, v4ip ) )
    exerr("Error: Cant make live sync incoming socket join mcast group.");

  if( ( g_socket_out = socket_udp4()) < 0)
    exerr("Error: Cant create live sync outgoing socket." );
  if( socket_bind4_reuse( g_socket_out, v4ip, port ) == -1 )
    exerr("Error: Cant bind live sync outgoing socket." );

  socket_mcttl4(g_socket_out, 1);
  socket_mcloop4(g_socket_out, 0);
}

示例#2

文件： socket_mcttl6.c 项目： djbtao/libdjb

int socket_mcttl6(int s,char TTL)
{
#ifdef LIBC_HAS_IP6
  return setsockopt(s,IPPROTO_IPV6,IPV6_MULTICAST_HOPS,&TTL,sizeof TTL);
#else
  return socket_mcttl4(s,TTL);
#endif
}