2008/5/6 Jason Frank <[EMAIL PROTECTED]>:
> I am using JMeter 2.3.1 to test a java (Tomcat) web application. My test
> involves a login, followed by an action that requires the user to be logged
> in. I use an HTTP Cookie Manager in the Thread Group so that the second
> request will be recognized as "logged in", due to the JSESSIONID cookie that
> gets assigned during login.
>
> I want to be able to "loop" over my test, so that it is repeated multiple
> times. Therefore, I check the "clear cookies each iteration" box, so that on
> the second iteration it will not reuse the JSESSIONID that was assigned the
> first time. So far, so good. I can see the POST to my login page has no
> cookies each time, and the response contains a SET-COOKIE directive for
> JSESSIONID.
>
> The problem comes when I want to use multiple threads. Suppose I launch 2
> threads for this Thread Group. Thread A makes a POST to the login page, with
> no cookies, and gets a response to set the JSESSIONID cookie. Then, Thread B
> makes a POST to the login page, and (here is what I think the root of the
> problem is) it sends the same cookie value of JSESSIONID that Thread A
> received. The response to Thread B tells it to set a different value for
> JSESSIONID, so usually this results in two separate logins, but this doesn't
> always happen. The result is that I sometimes have both threads using the
> same value for JSESSIONID, which causes problems later in my test.
>
> Interestingly, if I don't check the box for "clear cookies each iteration",
> then Thread A and Thread B work fine -- Thread B's POST to the login page has
> no cookies, as it should. However, this gets me into trouble when the
> threads go back for another iteration. So I can set things up to *either*
> work for multiple threads, or for multiple loops, but not both.
>
> Has anyone seen this behavior? Is this a JMeter bug, or something that I am
> misunderstanding?
>
http://wiki.apache.org/jakarta-jmeter/CookieManagerBugIn231
>
>
>
>
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