Ok, this is what I've experienced with IE and Netscape on Windows NT
regarding session ids:
1) if you have a version of IE that has been enabled to launch browser
windows in a separate process, than clicking on the IE icon will generate
separate instances of IE. In this case, they will have different session
ids because the session id cookie that the JSP engine places on the browser
to track the session will be different for each separate browser instance
since they do not share the same memory space. See the following Microsoft
KnowledgeBase article about launching separate browser windows:
http://support.microsoft.com/support/kb/articles/Q240/9/28.ASP?LN=EN-US&SD=g
n&FR=0&qry=separate%20process&rnk=2&src=DHCS_MSPSS_gn_SRCH&SPR=IE
2) I'm using Netscape Communicator 4.76 on WinNt and even though I click on
the NS icon twice to create two browser windows, they do not create separate
processes but instead use the same process (I checked this using the Windows
task manager and saw that they use the same process id). Because they use
the same process, they share the same memory space, and consequently, the
same session cookie id.
Remember that for session management, unless you are doing URL rewriting,
the JSP or Servlet engine stores a session id on the server AND places the
same session id in a cookie on the client side so that it can track a
browser's session. If the session id from the cookie doesn't match with
what's on the server, the server says 'ah, this is a new browser session'
and proceeds to generate a new session id for the browser AND sends a new
session id cookie to the browser to start tracking this new session all over
again.
So, I guess the moral of the story for 'session management' is "programmer
be aware" :-)
-----Original Message-----
From: SANDARBH SHARMA [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 28, 2000 9:11 AM
To: [EMAIL PROTECTED]
Subject: Re: Session - clarify please
this is getting confusing if the servlet is displaying session id then it
should not be browser specific as servlet runs at the server side and not at
client side, It should give seperate id irrespective of browser
sandarbh
>From: "Nimmons, Buster" <[EMAIL PROTECTED]>
>Reply-To: A mailing list about Java Server Pages specification and
> reference <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: Session - clarify please
>Date: Thu, 28 Dec 2000 10:56:47 -0600
>
>One thing to look out for with new windows is that browser windows opened
>with the
>File---> New Window menu item will share the same session ID. However if
>you
>double click on the IE or NS icon to open a new window each browser will
>have seperate session IDs
>
>-----Original Message-----
>From: Srinivasan, Pratibha (CORP, GEITC)
>[mailto:[EMAIL PROTECTED]]
>Sent: Thursday, December 28, 2000 12:37 AM
>To: [EMAIL PROTECTED]
>Subject: Session - clarify please
>
>
>hi,
>I have a very basic question. I have a servlet which prints out the session
>id.
>I open a Netscape browser window and run this servlet. Then I open another
>Netscape window and run the same servlet. What I find is that the session
>id
>is the same in both cases that is both the windows are in the SAME session.
>When I do the same with IE, I observe that the session ID is different in
>both cases that is the windows belong to DIFFERENT sessions.
>Is the concept of Session browser specific?
>Regards,
>Pratibha
>
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