Re: Verifying the user is connected

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Robert,

Technically, after each page is delivered to the client the user is no
longer connected to your website.

That is why session state was invented. Session state is simply a timer that
gets reset every time a user connects to the server. How does the server
know which user is currently connecting? The first time a "new" user
connects to the server and begins a new session a cookie is stored on the
server.

I would suggest that you use the user session to check if a user is still
connected and set it for longer than a single connection to your iFrame
refresh. So if your iFrame refreshes once a minute and you want to give a
user up to three tries to connect set your session timeout to three minutes
and twenty seconds or something similar to that logic.

--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche
"Robert Scheer" <rbscheer@xxxxxxxxxxx> wrote in message
news:1127015993.765497.233230@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi.
>
> My site needs to know if the user is connected before executing some
> queries on my database. Actually, I have a page loaded by an Iframe
> that runs every 30 seconds and updates a field on my database to tells
> me the user is connected. If this field is not updated for more than
> one minute I consider the user disconnected.
>
> The problem is, if that page does not load for any anormal reason (an
> IIS error like Page Could not be Loaded, for example), my database
> won't be updated, but the user is connected!
>
> What is the best way to detect a user is connected on your site? I read
> about an element on the Machine.config file called
> clientConnectedCheck. Can it be used for that kind of verification?
>
> Thanks,
> Robert Scheer
>


.

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