> I have found StreamHub, GWT-Comet (and more) online but I'm not sure
> if I can use these libaries in the manner I am proposing...
I don't think you can because you can't keep a connection open to the
client so polling would be your only option.
Personally I liked DWR.
If you have a 2rd server that has an open connection to the client you
can tell -->
AppEng --> 2rd server ("tell client that a message is waiting") -->
client ("call AE as a message is waiting") ---> Appengine ("can I have
my waiting message") --> client ("here is your message")
There may be a more appropriate appeng specific mechanism in the works
but I'm not on top of it.
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