Be aware that push is very early. But there are two working implementations already - oTalk and Buddycloud (https://github.com/buddycloud/buddycloud-pusher http

Be aware that push is very early. But there are two working implementations already - oTalk and Buddycloud (https://github.com/buddycloud/buddycloud-pusher https://github.com/buddycloud/buddycloud-pusher). What's interesting is that we both came up with very similar solutions. So specing something official and then adapting our code to match the spec should be trivial (in the grand scheme of things).