From 36b532815cb83acc1d773cea63eea52303bedddc Mon Sep 17 00:00:00 2001 From: Jindřich Makovička Date: Sun, 7 Dec 2008 17:29:09 +0000 Subject: bind to the multicast address if possible Originally committed as revision 16032 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/udp.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'libavformat') diff --git a/libavformat/udp.c b/libavformat/udp.c index bbdb930e4e..59ba4188b5 100644 --- a/libavformat/udp.c +++ b/libavformat/udp.c @@ -336,7 +336,7 @@ int udp_get_file_handle(URLContext *h) static int udp_open(URLContext *h, const char *uri, int flags) { char hostname[1024]; - int port, udp_fd = -1, tmp; + int port, udp_fd = -1, tmp, bind_ret = -1; UDPContext *s = NULL; int is_output; const char *p; @@ -404,7 +404,13 @@ static int udp_open(URLContext *h, const char *uri, int flags) goto fail; /* 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; len = sizeof(my_addr); -- cgit v1.2.3