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Warn when not setting multicast TTL.

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This commit is contained in:
Martin Pulec
2021-03-29 16:58:05 +02:00
parent a2f5dfe840
commit 43d1568091
1 changed files with 18 additions and 10 deletions
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28
src/rtp/net_udp.cpp
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@@ -407,11 +407,15 @@ static int udp_join_mcast_grp4(unsigned long addr, int rx_fd, int tx_fd, int ttl
return FALSE;
}
#endif
if (ttl > -1 && SETSOCKOPT
(tx_fd, IPPROTO_IP, IP_MULTICAST_TTL, (char *)&ttl,
sizeof(ttl)) != 0) {
socket_error("setsockopt IP_MULTICAST_TTL");
return FALSE;
if (ttl > -1) {
if (SETSOCKOPT
(tx_fd, IPPROTO_IP, IP_MULTICAST_TTL, (char *)&ttl,
sizeof(ttl)) != 0) {
socket_error("setsockopt IP_MULTICAST_TTL");
return FALSE;
}
} else {
LOG(LOG_LEVEL_WARNING) << "Using IPv4 multicast but not setting TTL.\n";
}
if (SETSOCKOPT
(tx_fd, IPPROTO_IP, IP_MULTICAST_IF,
@@ -511,11 +515,15 @@ static int udp_join_mcast_grp6(struct in6_addr sin6_addr, int rx_fd, int tx_fd,
socket_error("setsockopt IPV6_MULTICAST_LOOP");
return FALSE;
}
if (ttl > -1 && SETSOCKOPT
(tx_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&ttl,
sizeof(ttl)) != 0) {
socket_error("setsockopt IPV6_MULTICAST_HOPS");
return FALSE;
if (ttl > -1) {
if (SETSOCKOPT
(tx_fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&ttl,
sizeof(ttl)) != 0) {
socket_error("setsockopt IPV6_MULTICAST_HOPS");
return FALSE;
} else {
LOG(LOG_LEVEL_WARNING) << "Using IPv6 multicast but not setting TTL.\n";
}
}
if (SETSOCKOPT(tx_fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
(char *)&ifindex, sizeof(ifindex)) != 0) {