/**
* Join a socket into a multicast group
* @param sock filedescriptor of socket
* @param multicast multicast ip/port to join
* @param os_if pointer to outgoing interface data for multicast
* @param loop true if multicast loop should be activated, false otherwise
* @param log_src logging source for error messages
* @return -1 if an error happened, 0 otherwise
*/
int
os_fd_generic_join_mcast_send(struct os_fd *sock,
const struct netaddr *multicast,
const struct os_interface *os_if, bool loop,
enum oonf_log_source log_src __attribute__((unused))) {
struct netaddr_str buf1, buf2;
unsigned i;
if (netaddr_get_address_family(multicast) == AF_INET) {
OONF_DEBUG(log_src,
"Socket on interface %s joining sending multicast %s (src %s)\n",
os_if->name,
netaddr_to_string(&buf2, multicast),
netaddr_to_string(&buf1, os_if->if_v4));
if (setsockopt(sock->fd, IPPROTO_IP, IP_MULTICAST_IF, netaddr_get_binptr(os_if->if_v4), 4) < 0) {
OONF_WARN(log_src, "Cannot set multicast %s on interface %s (src %s): %s (%d)\n",
netaddr_to_string(&buf2, multicast),
os_if->name,
netaddr_to_string(&buf1, os_if->if_v4),
strerror(errno), errno);
return -1;
}
i = loop ? 1 : 0;
if(setsockopt(sock->fd, IPPROTO_IP, IP_MULTICAST_LOOP, (char *)&i, sizeof(i)) < 0) {
OONF_WARN(log_src, "Cannot %sactivate local loop of multicast interface: %s (%d)\n",
loop ? "" : "de", strerror(errno), errno);
return -1;
}
}
else {
OONF_DEBUG(log_src,
"Socket on interface %s (%d) joining sending multicast %s (src %s)\n",
os_if->name, os_if->index,
netaddr_to_string(&buf2, multicast),
netaddr_to_string(&buf1, os_if->if_linklocal_v6));
if (setsockopt(sock->fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
&os_if->index, sizeof(os_if->index)) < 0) {
OONF_WARN(log_src, "Cannot set multicast %s on interface %s (src %s): %s (%d)\n",
netaddr_to_string(&buf2, multicast),
os_if->name,
netaddr_to_string(&buf1, os_if->if_linklocal_v6),
strerror(errno), errno);
return -1;
}
i = loop ? 1 : 0;
if(setsockopt(sock->fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &i, sizeof(i)) < 0) {
OONF_WARN(log_src, "Cannot deactivate local loop of multicast interface: %s (%d)\n",
strerror(errno), errno);
return -1;
}
}
return 0;
}
static int addMessageHeader(struct rfc5444_writer *wr, struct rfc5444_writer_message *msg) {
struct netaddr orig;
CHECK_TRUE(0 == netaddr_from_string(&orig, "10.5.11.1"), "failed to initialize ip");
rfc5444_writer_set_msg_header(wr, msg, true, false, false, false);
rfc5444_writer_set_msg_originator(wr, msg, netaddr_get_binptr(&orig));
return RFC5444_OKAY;
}
