only under certain circumstances. If the browser was opened via a ctrl+n or via a javascript:window.open() or a target="_blank" then the session will definitely be the same as the parent window. If you re-double-click the icon on the desktop to open IE then you start the browser in a new memory process. I think IE5.5 had a setting enabling or disabling starting in a new memory process. I could be wrong on that, though. I have IE6 installed on my home machine right now and it doesn't have that option that I can find. Either way, even with opening in a new memory process, I've seen enough weird behavior where IE ends up sharing cookies somehow with other browser processes that I never count on that behavior anymore.

Bottom line, close all browsers if you want new in-memory cookies....which session cookies are or use two or more completely separate browsers such as IE, Mozilla, or Opera.

Jake

At 03:31 PM 10/30/2002 +0000, you wrote:
In my experience, IE 6 creates a new session cookie for each browser
window...

Andy

> -----Original Message-----
> From: Nick Lombard (VSP) [mailto:nick.lombard@;vcontractor.co.za]
> Sent: 30 October 2002 15:25
> To: Tomcat Users List
> Subject: RE: Session start
>
>
> Hi Mauro
>
> At least this one I can answer for you.
>
> You will deffinitely not be able to start a new session for each browser
> window opened if you are using session cookies.
>
> The Session cookie specification is slightly different to that of normal
> cookies. It shares the same rule that the browser will send the
> cookie only
> to the domain from which it originated. But the session cookie lasts the
> lifetime of the browser whereas the normal cookie will be saved. So if a
> browser is closed (not just a window of the same browser process)
> the cookie
> will die with it. All the browser windows share the same cookies and if a
> session cookie is available for a the domain being accessed the
> cookie will
> be sent along.
>
> I.o.w if your servlet/jsp makes a call to request.getSession(true); the
> session ID identified in the request will return the session object stored
> at the server identified by the session ID in the request
> (cookie) if there
> is no session id or the session has expired on the server a new
> session will
> be created and a request will be made to the browser to kindly return a
> session cookie with the supplied id. If request.getSession(false); is
> called, the same process as above occurs but a new session will not be
> created.
>
> Thus to understand "who the session id belongs to" the answer is something
> like: The session id as a cookie is kept for the lifetime of a browser
> process on the client and identified on the server. Different vendor
> browsers will all have their own session cookies and thus session ids.
>
> To solve your problem it is correct what Ralph said.
> A session cookie cannot be used because the cookie is shared by
> all browser
> windows of the same browser process. The sollution is url
> rewriting in which
> the session id is not sent by a cookie but is sent as a request parameter
> and thus if the client opens a new browser window and types in your URL it
> will not contain the session id request parameter and thus a new
> session can
> be created on the server. This might not be the case if the
> client asks for
> a link on your application to open in a new window because the parameter
> might be in the link.
>
> I hope this makes it slightly clearer.
>
> Nick.
>
>
>
>
> -----Original Message-----
> From: Mauro Daniel Ardolino [mailto:mauro@;altersoft.com.ar]
> Sent: Wednesday, October 30, 2002 4:38 PM
> To: Tomcat Users List
> Subject: RE: Session start
>
>
> OK, but I still have some servlets that have to communicate using
> HttpSession setting and getting objects between them.  So if on each call
> to different servlets I obtain a new session, then I loose the objects
> contained in the session.
>
> So reading your answer I think that the problem is to who belongs the
> session id.  Does it belongs to the machine that is browsing? I mean: the
> IP address? I don't think so because in multiple text sessions of the same
> linux machine, browsing from each the same servlet, I obtain different
> sessions.  Does it belongs to the user?  which user?  windows user?  linux
> user? other OS users?  No, the same user on different linux sessions, gets
> different HttpSession.  So I have to think that depends on the
> OS.  E.g. on linux it depends on the linux session.  I'd like to bypass
> this behavior opening a session each time a user opens a browser.  I
> think I have to rescue a browser window id or something like that from
> the HttpServletRequest.
>
> Any ideas?
>
> Thanks,
>
> Mauro
>
>
>
> On Wed, 30 Oct 2002, Ralph Einfeldt wrote:
>
> > It's quite simple.
> >
> > Whenever a request reaches tomcat that contains no
> > session id (url or cookie) or a session id that
> > doesn't belongs to a active session, tomcat creates
> > a new session.
> >
> > To do what you want you have to disable cookies
> > in tomcat. This way you will get a new session
> > whenever a new window is opened and the url that
> > is used for the window contains no session id.
> >
> > Ralph Einfeldt
> > Uptime Internet Solution Center GmbH
> > Hamburg, Germany
> > Hosting, Content Management, Java Consulting
> > http://www.uptime-isc.de
> >
> > > -----Original Message-----
> > > From: Mauro Daniel Ardolino [mailto:mauro@;altersoft.com.ar]
> > > Sent: Tuesday, October 29, 2002 5:13 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Session start
> > >
> > > I'm confussed about when does a session starts.
> > >
> > > Browsing with netscape on a linux gui, opening 2 browsers,
> > > calling the same servlet, the session is shared.  I want
> > > to start a new  session! I mean every time a user opens a
> > > new browser or a new window of the browser and calls my
> > > servlet, I want to start a new session.
> >
> > --
> > To unsubscribe, e-mail:
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> > For additional commands, e-mail:
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> >
> >
>
> --
> Ing.Mauro Daniel Ardolino
> Departamento de Desarrollo y Servicios
> Altersoft
> Billinghurst 1599 - Piso 9
> C1425DTE - Capital Federal
> Tel/Fax: 4821-3376 / 4822-8759
> mailto: [EMAIL PROTECTED]
> website: http://www.altersoft.com.ar
>
>
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