Just found out that the after_start.js was a workaround for the lack of events from the application to know when the server had actually started (so you would know when you could attach Socket.io). Now the geddy
object in the worker process emits a 'started' event you can use:
http://geddyjs.org/reference#global
So set a listener in your init.js for that event, and set your RT code up in there.