Unlimited session timeout

[David Causse]

Hi,
I need in some exceptionnal condition to disable the session timeout for 
one request.
Is there some convenient way to do so?

My idea is to do this but I'm unsure :
In the exceptionnal servlet (at the beginning):
   session.setAttribute("OLD_TIMEOUT", new 
Integer(session.getMaxInactiveInterval()));
   session.setMaxInactiveInterval(-1);

In my filter:
   Integer oldTimeout = (Integer) session.getAttribute("OLD_TIMEOUT");
   if(oldTimeout != null) {
       session.setMaxInactiveInterval(oldTimeout.intValue());
   }
What do you think about this method is it safe/working?
Maybe there is a way to do it with session listeners (by cancelling the 
call to invalidate, I don't know if it is possible).

Thank you.
David.
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