Automattic/socket.io-adapter — pull request #15 by download13 (2014-10-02 02:47:00+00:00)
Title: A list method for getting socket ids in a room

Since none of the other callbacks return anything I wasn't sure if I was supposed to use the `(err, result)` pattern or just have the result be the first argument.

I ended up using the error pattern, but I can change it if that's incorrect.