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<p class="MsoNormal">Helllo Ross,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">We are facing a crash with ProxyServerMediaSession code, regarding which we would appreciate your help.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Scenario:</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>32 backend cameras being proxy-ed, bitrate around ~500 Kbps from each</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>Connection to backend camera is in RTP over RTSP (TCP) mode</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>Each stream is accessed by 2 downstream clients (UDP mode)</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>Network bandwidth is often loaded, resulting in client not receiving data for good duration</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>As a result, if clients don’t receive data for 10 seconds, they disconnect</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>At ProxyServerMediaSession, this results in calling ‘closeStreamSource’, whereby PAUSE command is being sent to backend camera</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>The backend cameras do not support PAUSE commands</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>After a timeout, downstream clients reattempt connection, which results in sending PLAY command to backend camera</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>However, backend camera is for some reason is unresponsive, or, there is a lot of data being handled</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>‘scheduleLivenessCommand’ gets called, which sends OPTIONS command, for which no reply is received</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>So, next connections are reset, and a DESCRIBE is sent</p>
<p class="MsoListParagraph" style="text-indent:-.25in"><span style="">-<span style="font:7.0pt "Times New Roman"">
</span></span>This is where the crash happens (rather, this is the last print I see, no replay for DESCRIBE is received)</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">OS is Windows. I will try to gather a stack trace somehow running in Debug mode tomorrow. But, would you have an idea where things could be going wrong?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Does camera not supporting PAUSE command make any difference?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Regards,</p>
<p class="MsoNormal">Subhankar.</p>
<p class="MsoNormal"> </p>
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