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bind to the multicast address if possible

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Originally committed as revision 16032 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jindřich Makovička 2008-12-07 17:29:09 +00:00
parent 0dfcc36818
commit 36b532815c
1 changed files with 8 additions and 2 deletions
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10
libavformat/udp.c
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@ -336,7 +336,7 @@ int udp_get_file_handle(URLContext *h)
static int udp_open(URLContext *h, const char *uri, int flags) static int udp_open(URLContext *h, const char *uri, int flags)
{ {
char hostname[1024]; char hostname[1024];
int port, udp_fd = -1, tmp; int port, udp_fd = -1, tmp, bind_ret = -1;
UDPContext *s = NULL; UDPContext *s = NULL;
int is_output; int is_output;
const char *p; const char *p;
@ -404,7 +404,13 @@ static int udp_open(URLContext *h, const char *uri, int flags)
goto fail; goto fail;
/* the bind is needed to give a port to the socket now */ /* the bind is needed to give a port to the socket now */
if (bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) /* if multicast, try the multicast address bind first */
if (s->is_multicast && !(h->flags & URL_WRONLY)) {
bind_ret = bind(udp_fd,(struct sockaddr *)&s->dest_addr, len);
}
/* bind to the local address if not multicast or if the multicast
* bind failed */
if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
goto fail; goto fail;
len = sizeof(my_addr); len = sizeof(my_addr);