How does Gmail do comet on Opera?

Question

I would like to know how Gmail (or anyone else) does comet on Opera.

Here is what I know so far from my experiments.

1. It doesn\'t use the event-source tag w

Answer 1

GMail uses BrowserChannel (Docs | Source), which is included in Google's Closure Library.

• @fileoverview Definition of the BrowserChannel class. A BrowserChannel
• simulates a bidirectional socket over HTTP. It is the basis of the
• Gmail Chat IM connections to the server.