On Tue, 21 Aug 2001, Jen wrote:
> When I tested the HttpSessionBindingListener, when the
> user close the browser the unBoundValue() is not
> called. It is called until the session times out.
Right. This discussion has come up many times before (check the
archives), and the consensus has been that basically there is no 100%
guaranteed reliable way to sense that the browser has closed or that
the user has moved on to other pages -- it's the nature of the HTTP
request/response, stateless paradigm. Hence you're going to have to
rely on a timeout in addition to any explicit "logout" function you
have.
FWIW, a couple of the "best" suggestions to do the kind of thing you
want were to use JavaScript or a small Java applet. Again, check the
archives for more info.
> --- Nic Ferrier <[EMAIL PROTECTED]> wrote:
> > Rajesh said:
> > What we want is:
> > if user closes the browser
> > Or
> > goes to some other website, either by
> > explicitly typing the URL, or
> > clicking on browser back
> > and forward buttons, then we want to invalidate
> > the session and close
> > the connection.
> > So how do I trap the browser close event and how
> > do I trap whether the
> > user
> > has left the website or not.
> >
> > This is basic stuff. You just put an object on the
> > session which implements
> > HttpSessionBindingListener. If you do that your
> > listener object will recieve
> > an event when the session dies (ie: the user closes
> > the browser or has
> > surfed on for a significant time). You can then
> > obtain the Connection from
> > the session and close it.
> >
> > This has been discussed (about a gazillion times)
> > here on this list.
> >
> > Check the archives and other sites for more details.
> >
> >
> > Nic Ferrier
> >
> >
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Milt Epstein
Research Programmer
Software/Systems Development Group
Computing and Communications Services Office (CCSO)
University of Illinois at Urbana-Champaign (UIUC)
[EMAIL PROTECTED]
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