[ale] What technology is used on chat web pages?

[Geoffrey]

Jim Lynch wrote:
> How do they write web pages such as chat pages?  Traditional web pages
> are "fetch" only technology.  That is, the user controls when he wants
> the page to change, except for a bit of javascript that can refresh or
> modify the page locally.  But on a chat type page, the server has to be
> able to send data to the users page when the other party enters
> something.  Does anyone know how you could do that?   I suppose a
> javascript could set a timer and refresh periodically, but that doesnt
> appear to be the way it works.

The ones I've seen were java, which has the ability you reference. 
Other then that, I guess you could have the 'chatters' submissions 
written to your server and have a process that's watching for that file 
to be changed/updated/created.

> 
> Is there a way to establish a pipe somehow?
> 
> I'd like to write a simple chat page via perl and cgi, if possible.
> 
> Thanks,
> Jim.
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> Ale at ale.org
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> 
> 

-- 
Until later: Geoffrey		esoteric at 3times25.net

The latest, most widespread virus?  Microsoft end user agreement.
Think about it...

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