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<TITLE>RTSPClientSession and doEventLoop in a dynamic server </TITLE>
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<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Hi,<BR>
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My implementation of a dynamic RTSPServer works as follows: When a request is received, the subclasses RTSPServer instance has an overloaded lookupServerMediaSession function. If the stream is not already present on the server, it will bootstrap the stream and add to the server before returning the correct ServerMediaSession object.<BR>
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The bootstrap process can sometimes take a long time, and so in order to not interrupt the operation of the other streams, I spawn a NON-LIVE555 thread to perform the actual bootstrap whilst the live555 runs an additional doEventLoop(watchVar). When the thread completes, it signals the watchVar and the stream is then added to the server if the bootstrapping is successful. Then the main live555 thread continues. <BR>
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The consequence is that within a “doEventLoop” call there is an additional “doEventLoop” being ran. One of the problems I have seen is that sometimes whilst the bootstrapping is happening, the client closes the connection. In the second “doEventLoop” the server recognizes this and deletes the RTSPClientSession object. Unfortunately, it is this within this object that is performing the second doEventLoop (in the handleCmd_DESCRIBE function), and things obviously start to go awry. <BR>
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One solution is to handle this by reference counting the incoming connections on the my custom RTSPClientSession. However, the only place to handle this would be the incomingRequestHandler, however this function is not virtual in the RTSPClientSession. <BR>
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Another solution would be to turn off backgroundReadHandling whilst performing a DESCRIBE. Then turn it on again after the DESCRIBE is complete. This does not seem a general purpose solution tho, as what if I have another function where doEventLoop is called.<BR>
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At this point I would welcome feedback. Am I handling this case all wrong? <BR>
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Regards,<BR>
Stuart<BR>
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