Hi all,
check out http://ccml01.medien.uni-weimar.de:8071/simplechat
It is a realtime chat application programmed with rails that uses an
ajax server push connection under Mozilla (x-mixed-replace).
All other clients like IE, Opera and Safari poll for new information
every five seconds.
We just finished the first version of the push connection framework,
which includes a HTTP push server prorammed in Ruby and Javascript
Objects to access it.
All messages going to the browser are JSON-RPC encoded. The framework
can be used for more complex applications like browser games,
collaborative applications and other stuff gaingin from realtime
communication.
More information under
http://www.uni-weimar.de/~scheffl2/wordpress/?p=19
Cheers,
Martin