logging a user out on session timeout with tomcat 3.2.3

[ian silvester <ia...@is2.co.uk>]

Hi all,

I have an implementation of Tomcat 3.2.3 on NT4sp6a. I would like for a
user's browser to visually tell them that they've been 'logged out' of the
system if their session times out. I do not want to put a test on a session
attribute on every page with a redirect if fail, because that's just old and
clunky and I'm sure there is a better way.

I have created a bean that implements the HttpSessionBindingListener
interface, which successfully writes to the console on session end - so far
so good - but the console is at the server (obviously).

My problem is that I would like to write to the browser window. I am of the
understanding that beans are stored client-side, so that's looking good, but
I can't find a way of getting an output stream from the bean to the browser
window (something equivalent to response.getOutputStream).

I'm aware BTW that Tomcat 4.0.1 (and therefore Servlets 2.3) offers much
richer lifecycle objects, but an upgrade is unfortunately not an option
(unless someone has a complete solution to the above under 4.0.1. I'm
prepared to put forward the business case but only if its a surefire
winner!)

Any information about this would be very greatly appreciated.

regards,

Dr. Ian Silvester



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