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avformat/udp: use one setsockopt for ipv4/ipv6 

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2022-02-05 20:13:20 +08:00
parent 1de24ee512
commit c0817ee92e
1 changed files with 20 additions and 12 deletions
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32
libavformat/udp.c
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@ -162,22 +162,30 @@ static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
struct sockaddr *addr,
void *logctx)
{
int protocol, cmd;
switch (addr->sa_family) {
#ifdef IP_MULTICAST_TTL
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL)");
return ff_neterrno();
}
}
case AF_INET:
protocol = IPPROTO_IP;
cmd = IP_MULTICAST_TTL;
break;
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS)
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS)");
return ff_neterrno();
}
}
case AF_INET6:
protocol = IPPROTO_IPV6;
cmd = IPV6_MULTICAST_HOPS;
break;
#endif
default:
return 0;
}
if (setsockopt(sockfd, protocol, cmd, &mcastTTL, sizeof(mcastTTL)) < 0) {
ff_log_net_error(logctx, AV_LOG_ERROR, "setsockopt(IPV4/IPV6 MULTICAST TTL)");
return ff_neterrno();
}
return 0;
}