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);
}
int socket_mcjoin6(int s,const char ip[16],int interface)
{
#ifdef LIBC_HAS_IP6
struct ipv6_mreq opt;
#endif
if (ip6_isv4mapped(ip))
return socket_mcjoin4(s,ip+12,ip);
#ifdef LIBC_HAS_IP6
byte_copy(&opt.ipv6mr_multiaddr,16,ip);
opt.ipv6mr_interface=interface;
return setsockopt(s,IPPROTO_IPV6,IPV6_ADD_MEMBERSHIP,&opt,sizeof opt);
#else
errno=error_proto;
return -1;
#endif
}
