OK, thinking about this some more - now I think I understand.
You’re streaming from your camera via IP multicast (because you're using the
‘Elphel’ code as a model). In this case, each RTSP session - from a client -
asks to receive the (existing) IP multicast stream, but does not start a new
stream (or stop the existing multicast stream).
So you want to know how to stop the IP multicast stream (independently of RTSP
clients). There’s no way within the RTSP protocol to do this, so - if you
really want to do this - you’d have to come up with your own protocol/mechanism
to do this, and implement it yourself. (The actual code inside your server
would be straightforward: simply call
yourSink->stopPlaying();
But perhaps you should ask yourself if you *really* want to stream via IP
multicast. If you’re streaming to only one client - or to multiple clients
located on non-IP-multicast routed networks - then you would be better off
streaming via IP *unicast* instead. If you were to do this, then the RTSP
server would send out a stream only when requested by a RTSP client. This can
be done easily using our “testOnDemandRTSPServer” code as a model; see
http://live555.com/liveMedia/faq.html#liveInput-unicast
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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