On Monday, March 4, 2002, at 07:59 PM, olev rumm wrote:
> Hello
> How can I monitor how many visitors are currently on line, with out
> refreshing the frame - like a live monitor.
> Olev
I've seen questions like this quite a bit on this list. If you really
think about it, nobody's "logged in" to your site. :) Your site is
throwing out page requests, that's all. There's no "place" for them to
log in. If you're referring to "who is currently in the middle of a
session on my site", then you'll have to come up with a workaround.
Some ideas have included testing to see who has submitted a page request
with a session ID within the past few minutes, or things like that. But
you'll never be able to make sure someone is "logged in" or not because
your server needs to wait for the user to send some information for it
to know what it's doing.
Think of HTTP as more like the postal service than a telephone
service -- you just send data back and forth, rather than have a true
interactive (stateful) session. Only with a custom web client like a
Perl/Python/Java program could you do otherwise, unless you can come up
with a really clever JavaScript code chunk that sends a message to the
server when the user closes a browser window or quits or whatever. Even
that would not be very reliable.
Erik
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
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