> I would like to know what is the best way to get some of the RTCP info when
> using UDP in the server side.
>
> Server side : we are using BasicUDPSource and StreamReplicator to send
> replicas towards the client apps.
So, is your server's input data RTP/UDP, or raw-UDP? I.e., is your intention
to:
1/ Make a direct copy of incoming RTP/UDP packets into outgoing RTP/UDP
packets (i.e., keeping the RTP headers exactly the same), or
2/ Copy data from incoming raw-UDP packets (which are *not* RTP
packets) into outgoing RTP/UDP packets?
If you're trying to do 1/ (a simple 'UDP relay'), then you should also be
copying the RTCP stream (that comes from the same source as the input RTP
stream). Note that this RTCP stream will (normally) be using the RTP stream's
port number +1; and you should do the same for the output ('relayed') RTCP
packets. And, ideally, you should also 'relay' RTCP packets from the receiver
back to the original source (i.e., also set up a 'relay' for RTCP packets that
come in the reverse direction).
But if you're trying to do 2/ (a 'raw-UDP-to-RTP relay'), then your server
should be using an appropriate "RTPSink" subclass, *not* a "BasicUDPSink". And
then you should also be creating a "RTCPInstance", tied to this "RTPSink". And
once again, the output "RTPSink" should use an even-numbered port, and the
corresponding "RTCPInstance" should use that port number +1 (i.e.,
odd-numbered).
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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