return NULL;
}
+/*
+ * Perform AF-independent joining of multicast receive addresses.
+ *
+ * \param fd Bound socket descriptor.
+ *
+ * \return Zero if okay, negative on error.
+ */
+static int mcast_receiver_setup(int fd)
+{
+ struct sockaddr_storage ss;
+ socklen_t sslen = sizeof(ss);
+
+ if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0)
+ goto err;
+
+ switch (ss.ss_family) {
+ case AF_INET:
+ if (IN_MULTICAST(htonl(((struct sockaddr_in *)&ss)->sin_addr.s_addr))) {
+ struct ip_mreq m4;
+
+ memset(&m4, 0, sizeof(m4));
+ m4.imr_multiaddr = ((struct sockaddr_in *)&ss)->sin_addr;
+ if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &m4, sizeof(m4)) < 0)
+ break;
+ }
+ return 0;
+ case AF_INET6:
+ if (IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)&ss)->sin6_addr)) {
+ struct ipv6_mreq m6;
+
+ memset(&m6, 0, sizeof(m6));
+ memcpy(&m6.ipv6mr_multiaddr, &((struct sockaddr_in6 *)&ss)->sin6_addr, 16);
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &m6, sizeof(m6)) < 0)
+ break;
+ }
+ return 0;
+ default:
+ PARA_ERROR_LOG("address family %d not supported", ss.ss_family);
+ return -E_ADDRESS_LOOKUP;
+ }
+err:
+ return -ERRNO_TO_PARA_ERROR(errno);
+}
+
static int udp_recv_open(struct receiver_node *rn)
{
struct private_udp_recv_data *purd;
rn->buf = para_calloc(UDP_RECV_CHUNK_SIZE);
rn->private_data = para_calloc(sizeof(struct private_udp_recv_data));
purd = rn->private_data;
- ret = create_udp_recv_socket(c->host_arg, c->port_arg);
+
+ ret = makesock(AF_UNSPEC, IPPROTO_UDP, 1, c->host_arg, c->port_arg);
if (ret < 0)
goto err;
purd->fd = ret;
+
+ ret = mcast_receiver_setup(purd->fd);
+ if (ret < 0) {
+ close(purd->fd);
+ return ret;
+ }
+
ret = mark_fd_nonblocking(purd->fd);
if (ret < 0)
goto err;