Automaticly Closing Channels

This is for MooClick and MooGame:

Is it possible to automaticly close inactive channels after a amount of time? Everytime a new channel is maid it gets added to a channel list and if the host should forget to click on the close channel button, or if he/she's computer should crash, then this list would be very long in the end. Also people may try and join one of them to no use.

I try and find a way so that if the application ends the channel gets deleted. One of things i tried is "end of application" and "end of frame" but none of these worked.

Anyone have any suggesstions?

You need to make a function where:

When a user leaves and the channel is no longer valid all the other clients get a list of the active channels. Then your clients will have an updated list of active channels to choose from. You would do this server side.

Pretty much the same when each channel is also created.