Server cleanup after a client disconnects

Question

Is there a way to detect when a client disconnects from a meteor server, either by refreshing or navigating away from the page, so that the server can attempt some cleanup?<

Answer 1

I think better way is to catch socket close event in publish function.

Meteor.publish("your_collection", function() {
    this.session.socket.on("close", function() { /*do your thing*/});
}

UPDATE:

Newer version of meteor uses _session like this:

this._session.socket.on("close", function() { /*do your thing*/});