Originally Posted by boeing747fp
well i have Fiddler installed and watched activity for meebo.com and there are no 2 connections. theres just 1 open connection that doesnt ever get to status 200....
that's correct. i didn't extensively explain comet, and there are differing techniques on how to do it.
with the "dual connection" method i refer to, you actually only have one connection open at any given time. the 2 connection refer to the roles of xmlHtttpRequest objects or dynamic script tags.
the delayed-close connection stays open waiting for new data. when that data arrives, that long-open connection closes, signaling the availability of new data. that new data is downloaded via the other connection.
if meebo has figured a way to reliably trickle data through the signal pipe, i wouldn't be surprised. the last time i tried the "single pipe" approach, i hit severe xbrowser problems. it could be better now.
i think there might even be turn-key commercial comet packages available.