If an rtsp server offers a udp multicast
address as response of a DESCRIBE command
the rtsp client is expected to issue
SETUP with "Transport: RTP/AVP/UDP;multicast".
Some rtsp servers bail out otherwise.
---
libavformat/rtsp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 859defa592..3f0cbfc98b 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -1913,6 +1913,9 @@ redirect:
&& (rt->rtsp_flags & RTSP_FLAG_PREFER_TCP))
lower_transport = RTSP_LOWER_TRANSPORT_TCP;
+ if (ff_is_multicast_address((struct
sockaddr*)&rt->rtsp_streams[rt->nb_rtsp_streams-1]->sdp_ip))
+ lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
+
err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
rt->server_type == RTSP_SERVER_REAL ?
real_challenge : NULL);
--
2.17.1
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