[Live-devel] How to know when a RTSP stream is ready to play?

[Ross Finlayson]

> On Mar 28, 2020, at 6:49 AM, Matthew Czarnek <mczarnek at edge360.com> wrote:
> 
> On my server, I'm calling this code to create a proxy Stream and add it to my session:
> 
>   ProxyServerMediaSession* proxyStream = ProxyServerMediaSession::createNew(*env, rtspServer, proxyURL, proxyStreamName);
>   rtspServer->addServerMediaSession(proxyStream);
[…]
> So, I'm trying to find a way to make sure that on the server, I know that the stream is playing before I tell the client to start streaming from it. Not sure how to do this.

You can do this by calling:
	envir()->taskScheduler().doEventLoop(&(proxyStream->describeCompletedFlag));
which waits (while still handling events) until the back-end RTSP “DESCRIBE” command has completed.

After this, you can also check
	proxyStream->describeCompletedSuccessfully()
If this is True, then you know that the back-end "DESCRIBE" command completed successfully.  If, however, it's False, then you know that the back-end "DESCRIBE" command completed, but unsuccessfully - presumably because the back-end stream does not exist.


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