From: Limin Wang <[email protected]>
Fix #ticket9449
Signed-off-by: Limin Wang <[email protected]>
---
Make it as real patch so that you can test it easily as I don't have BSD system
for testing.
libavformat/udp.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/libavformat/udp.c b/libavformat/udp.c
index 83c042d..a52a489 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -163,8 +163,15 @@ static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
void *logctx)
{
#ifdef IP_MULTICAST_TTL
+ int ret = 0;
if (addr->sa_family == AF_INET) {
- if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL,
sizeof(mcastTTL)) < 0) {
+ ret = setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL,
sizeof(mcastTTL));
+ if (ret < 0 && errno == EINVAL) {
+ /* BSD compatibility */
+ unsigned char ttl = (unsigned char) ((mcastTTL > 255) ? 255 :
mcastTTL);
+ ret = setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl,
sizeof(ttl));
+ }
+ if (ret < 0) {
ff_log_net_error(logctx, AV_LOG_ERROR,
"setsockopt(IP_MULTICAST_TTL)");
return ff_neterrno();
}
--
1.8.3.1
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