IOS Voip Socket will not run in background?

If you want to let your VOIP application run in background , except those base settings in plist file, you need a TCP socket who's property is set to VOIP, than the iOS system will take care this socket for you, when your application enter background , every thing was 'sleep' except that tcp socket. And if VOIP server send some data thought that TCP socket, your application will be awake up for 10 secs. During this time, you can post a local notification.

I was stuck with the exact same scenario. My problem was that i've configured more than one socket as a Voip socket.

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