Closing call or mediaconnection, it won't call close event immediately

[brickgale]

I'm having difficulties on switching screen sharing and the default camera. Switching calls thru opening and closing the current call to switch the streams(default camera and screen). Even though I override the close event every time I switch calls assuming that when close event is triggered, the call is already closed and thus I can open a call again, still it won't close as i predicted it would. This is a bit confusing to explain, but my problem is that I would like to open a new media connection after closing the current media connection properly.