> In my situation, I have multiple cameras with a unique ip address and port 
> number, but the remaining url could be the same as another camera. When using 
> the proxy server I can register both back-end urls but not at different ports 
> (because only one port is used when creating the 
> RTSPServerWithREGISTERProxying object).

I’m not sure I understand what you’re referring to here, but I suspect that you 
may be confused about which port numbers are used where.  The proxy server’s 
port number is the port number that 'front-end clients use when communicating 
with the proxy server.  However, the port number that’s used by the ‘back-end’ 
stream is the one that’s mentioned (either implicitly or explicitly) in the 
“rtsp://“ URL that you register with the proxy server.  (By default, this port 
number - if it’s not included explicitly in the “rtsp://“ URL - is 554, but if 
can be any other port number.)  Or alternatively, if you use the ‘REGISTER’ 
mechanism asking to reuse the TCP connection, then the ‘back-end’ stream’s port 
number will be whatever ephemeral port number was used to receive the 
‘REGISTER’ command .  In either case, this port number (which can be different 
for different ‘back-end’ streams) is completely independent of whatever port 
number is used by the proxy server.

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/ <http://www.live555.com/>

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