<!-- ==================== Default Session Configuration ================= -->
<!-- You can set the default session timeout (in minutes) for all newly created
sessions by modifying the value in web.xml -->
<session-config>
<session-timeout>30</session-timeout>
</session-config>
regards,
Martin
______________________________________________
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> Date: Sun, 20 Mar 2011 21:14:43 +0100
> From: felix.schumac...@internetallee.de
> To: users@tomcat.apache.org
> Subject: Re: Session timeouts: ignore "periodic polling" URL?
>
> On Sun, 20 Mar 2011 15:40:48 +0100, André Warnier wrote:
> > sebb wrote:
> >> On 20 March 2011 11:19, André Warnier <a...@ice-sa.com> wrote:
> >>> sol myr wrote:
> >>>> Hi,
> >>>>
> >>>> We have a Servelts/JSP application Tomcat6.
> >>>> Our javascripts issues automatic, periodic polling requests (Ajax
> >>>> and
> >>>> Comet), in order to keep the view up-to-date.
> >>>> Unfortunately this prevents sessions from timing out...
> >>>>
> >>>> Is there a way to tell Tomcat that some URL shouldn't affect
> >>>> session
> >>>> timeouts?
> >>>> Namely if for the last 30 minutes, the browser requested nothing
> >>>> but
> >>>> "http://server/autoRefresh.do"; , then Tomcat should assume the
> >>>> user went
> >>>> away from the computer, and kill the session.
> >>>>
> >>> You may have to explain the logic of this a bit better, because on
> >>> the face
> >>> of it, it makes no sense.
> >>> Presumably, if you create a session, it is because the application
> >>> needs a
> >>> session (aka, needs some information to be preserved between
> >>> individual
> >>> requests of the same user/browser).
> >>> Then why would you want it to time out ?
> >> This is the sort of behaviour one wants for online banking - the
> >> session should be logged out if the user does not do anything for a
> >> while, even though the page may be doing background requests.
> >>
> >
> > Allright then, I'll buy that, if somewhat reluctantly.
> >
> > The creation or retrieval of a session, as far as I understand it, is
> > totally under application control.
> > In other words, if your servlet (or JSP), when it is called, executes
> > a HttpServletRequest.getSession() call, then it will retrieve the
> > existing session (or create one if none exists yet); and if it does
> > not call getSession(), it will not.
> If the browser sends a session-id, tomcat will touch the session and
> mark it as alive.
>
> I remember a similar thread not long ago, but I can't find it in the
> archives. I could
> find a similar thread from 2008 where Christopher gave some answers to
> this problem[1].
>
> If OP knows the url-pattern for all its ajax-request, that should be
> ignored for
> session-keepalive, the parameter in the filter could be dropped. He
> would just have to
> limit the filter to that url.
>
> Regards
> Felix
>
> [1]
> http://old.nabble.com/Session-expiration-and-AJAX-issues-td15671248.html
> >
> > In other words, if you want some requests URLs "not to count" (or "be
> > excluded") as far as the session mechanism is concerned, then you
> > just
> > have to map these requests (URLs) to a servlet/JSP page which does
> > not
> > do a getSession().
> >
> > Of course, if in order to refresh the information in the browser
> > page, the application needs to access information stored in the
> > session, then you have a problem.
> >
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