LearnBoost/socket.io — pull request #926 by matthewaveryusa (2012-06-23 04:38:23+00:00)
Title: add events when a room is created or deleted 

If a room is used to group clients together to receive a particular set of subscriptions from a publisher, knowing when to subscribe/unsubscribe is crucial since there's no point in relaying data to an empty room. This would allow for event handlers to subscribe dynamically in a pub-sub pattern.