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* backends/mcast : implement start()

master
Alex 'AdUser' Z 8 years ago
parent
commit
53ddcc7d43
  1. 36
      src/backends/mcast.c

36
src/backends/mcast.c

@ -40,6 +40,8 @@ struct _config {
char mport[6]; /**< multicast port */ char mport[6]; /**< multicast port */
char iface[IF_NAMESIZE]; /**< bind interface */ char iface[IF_NAMESIZE]; /**< bind interface */
int sock; int sock;
struct sockaddr_storage sa;
socklen_t sa_len;
}; };
cfg_t * cfg_t *
@ -107,12 +109,44 @@ error(cfg_t *cfg) {
bool bool
start(cfg_t *cfg) { start(cfg_t *cfg) {
struct addrinfo hints;
struct addrinfo *result;
assert(cfg != NULL); assert(cfg != NULL);
int ret, sock = -1;
if (cfg->shared && usage_inc(cfg->name) > 1) if (cfg->shared && usage_inc(cfg->name) > 1)
return true; return true;
/* TODO */ memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_protocol = 0;
if ((ret = getaddrinfo(cfg->maddr, cfg->mport, &hints, &result)) < 0) {
snprintf(cfg->error, sizeof(cfg->error), "can't create socket: %s", gai_strerror(ret));
return false;
}
for (struct addrinfo *rp = result; rp != NULL; rp = rp->ai_next) {
if (sock >= 0) {
close(sock); /* from prev iteration */
sock = -1;
}
if ((sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol)) < 0) {
snprintf(cfg->error, sizeof(cfg->error), "can't create socket: %s", strerror(errno));
continue;
}
memcpy(&cfg->sa, rp->ai_addr, rp->ai_addrlen);
cfg->sa_len = rp->ai_addrlen;
break;
}
freeaddrinfo(result);
if (sock < 0)
return false;
cfg->sock = sock;
return true;
return true; return true;
} }

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