This still doesn't catch power failures. So, I guess there is really no
sure way.
(*Chris*)
----- Original Message -----
From: "Ted Neward" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, December 03, 1999 8:14 PM
Subject: Re: [Session tracking]
> You *can* get guaranteed notification by placing a non-visible applet on
> the page that opens a socket back to the server, and fires a message down
> the socket on closing; the HTML browsers are required to call the applet's
> "stop" method when it terminates for any reason, either leaving the page
> or closing the browser.
>
> Unless somebody knows better re: the "browser-applet" specification....
>
> Ted Neward
> http://www.javageeks.com/~tneward
>
>
> On Fri, 3 Dec 1999, Thor HW wrote:
>
> > You cannot tell when the browser closes, there are many hacks, but none
are
> > foolproof.
> > If you maintain a session object (your own, with state info) and if they
> > need to identify themselves somehow, you can restart an old session, or
> > invalidate it.
> > If you are tracking anonymous users, you are out of luck. You could try
and
> > set a long lived cookie, but they might have cookies off, which is a
default
> > for AOL users.
> >
> > Thor HW
> > ----- Original Message -----
> > From: kavitha ramasamy <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Friday, December 03, 1999 12:23 PM
> > Subject: Re: [Session tracking]
> >
> >
> > > The value unBound is called only at two places
> > > 1)when I am reloading the same session
> > > 2)when the session expires.
> > >
> > > My problem is if the user closed the browser window , I need to
release
> > the
> > > resource relevant to that session which I created at the time of
opening.
> > >
> > > I cannot even invalidate my previous session because the intention of
this
> > > work is to prevent multisession on the same user.
> > > If the user had a session, he cannot opened the next session.so the
> > resource
> > > should be released once the browser closed(clint exit)
> > >
> > > Thanks and Regards
> > > kavitha
> > >
> > >
> > > >
> > > >Make your session resource class "implements
HttpSessionBindingListener"
> > > >
> > > >and have the valueUnbound do your cleanup.
> > > > public void valueUnbound (HttpSessionBindingEvent event){
> > > > // Clean up everything in this session
> > > > // save or rollback changes, etc.
> > > > destroy();
> > > > }
> > > >
> > > >You can read the Javadoc on HttpSessionBindingListener for details.
> > > >
> > > >Thor HW
> > > >
> > > >----- Original Message -----
> > > >From: Pankaj <[EMAIL PROTECTED]>
> > > >To: <[EMAIL PROTECTED]>
> > > >Sent: Friday, December 03, 1999 8:41 AM
> > > >Subject: Re: [Session tracking]
> > > >
> > > >
> > > > > kavitha ,
> > > > >
> > > > > if you search the list archives for last month you will find out a
> > long
> > > > > discussion of this same problem which states under the subject
> > "Browser
> > > > > shutdown..." that there is no guaranteed way of knowing that
client is
> > > >no
> > > >more
> > > > > interested in using your site. Please search the archives for the
> > same.
> > > > >
> > > > > Pankaj.
> > > > >
> > > > > kavitha ramasamy <[EMAIL PROTECTED]> wrote:
> > > > > Hi,
> > > > >
> > > > > I am designing that user login system, where same user cannot
make
> > > > > multiple sessions(multiple entries with the same name). When a
> > > >particular
> > > > > user is making a session, the user information is logged into the
> > table
> > > >and
> > > > > released from the tablewhen the user closed the session.
> > > > >
> > > > > Here if the user close the system(prpoer logout of the
system),then it
> > > >is
> > > > > releasing all resources,woking fine.
> > > > >
> > > > > Once the user made the session, if he close the browser window(not
> > > >proper
> > > > > logout), I need to release the resources (session is still there)
> > before
> > > > > session time out.
> > > > >
> > > > > How can I release the resources if the user closes the browser
window
> > > > > before the session time out.
> > > > >
> > > > > Any help will be greatly appreciated
> > > > > Thanks
> > > > > kavitha
> > > > >
> > > > >
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