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CometD is a message bus for Ajax web applications that allows multi chan= nel messaging between client and server - and more importantly - between se= rver and client. The paradigm is publish/subscribe to named channels.= =20
To run the demo:=20 =20
and point your browser at http://localhost:8080/cometd. There= is the usual comet chat room demo, echo demo and time sync demo. All of th= em are implemented with dojo.=20 =20 =20
Echo demo prints data using RPC style messaging over cometd. Time sync, =
is just a test that uses the timesync extension to calculate a timeoffset w=
ith the server. The time displayed below is the server time and should be t=
he same for all clients no matter what their local clocks are set to.
The jetty implementation has extra features beyond the protocol:=20
There is more information on the cometd.org website, but= here's a few links to get you started:=20
Read the page on Stress= Testing Cometd for more information on how to tune and scale jetty for= Bayeux.