[Live-devel] Backend Camera receiving DESCRIBE request in REGISTER's success response (200 OK) from Proxy Server

[Durgesh Tanuku]

Hi Ross,

We are using live555 library (proxyServer) for proxying the back-end Camera
streams to end clients in one of our applications.

Recently I was trying to write a Camera simulation application (using
live555 2017.09.12) to test our Proxy Server. This Camera simulation app
Registers an RTSP stream (generated from local video file) with our Proxy
Server application. I have implemented this code referring to
testOnDemandRTSPServer.cpp. This code is working fine.

But occassionally stream is not getting registered properly with the Proxy
Server. With the help of tcpdump and additional logs, I have found that
Camera simulation app received DESCRIBE request along with response to
REGISTER request. Below is the corresponding log that printed contents of
fResponseBuffer during Registration failure.

fResponseBuffer :

RTSP/1.0 200 OK
CSeq: 3
Date: Thu, Oct 12 2017 14:56:02 GMT

DESCRIBE rtsp://10.0.1.163:8554/matroskaFileTest RTSP/1.0
CSeq: 2
User-Agent: Video Framework
Accept: application/sdp


Because of this, DESCRIBE request is not processed by Camera simulation app
and Registration is getting failed some times. Can you point how i can
handle this scenario in my Camera simulation app so that registration will
be successful everytime?

Thanks,
Durgesh
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