Now that both Tomcat & Jetty support native WebSockets, it would be a killer-feature to implement Comet / WebSockets channels. i.e. being able to have a channel id and to post a message to one client only or to all the clients who subscribed to a certain channel.
For the moment, it is possible to do it, but to the (expensive) price of having a PerRequestBroadcastFilter and tweaking it if we manage to do it. But it would be great to have a link to the Broadcaster API from Atmosphere, which I think, supports this kind of things.That would probably be way more efficient than PerRequestBroadcastFilter tweaking.
As of today, when posting a message to the event bus, all pages who have the @Subscribed-decorated method suitable to process this message will do it, which is not always desirable.
I'm looking forward to hear from you.