Cas Ticket Issue in Jmeter - regex

Question

I have a web application which uses CAS Ticket for user authentication purpose which is different for every login. I recorded the script in JMeter. Also I correlated the pages by filling up the Regular Expression Extractor as follows:
Recorded script has url: https://foo.com/j_spring_cas_security_check?ticket=ST-3101-QDTyjbbHoOHvgPMdRBIg-cas.
After applying all above I ran the script but got status fail displaying https://foo.com/j_spring_cas_security_check?ticket=Ticket_Not_Found.
It would be very helpful if someone could tell me what did I miss in my script?

Answer 1

There is two ways for this,
if you have multiple username and password and you can use those with Jmeter,
you can use those to generate CAS ST(Service ticket).
Another:
default when CAS create ticket, it can be just used for one time.
you have to change values in ticketExpirationPolicies.xml of your cas server
to use same ticket multiple times.
default location is:
WEB_INF/spring-configuration/ticketExpirationPolicies.xml
change this to if you want 50 users to use same ticket
<!-- This argument is the time a ticket can exist before its considered expired. -->
<constructor-arg
index="1"
value="100000" />
</bean>
<bean id="grantingTicketExpirationPolicy" class="org.jasig.cas.ticket.support.TimeoutExpirationPolicy">
<!-- This argument is the time a ticket can exist before its considered expired. -->
<constructor-arg
index="0"
value="7200000" />
</bean>
Answer given by: VIVEK ADHIKARI

Answer 2

It seems that an error happened when fetching ticket value from url's parameter list. Maybe you can add a hidden field on your page and set its value from this parameter.
<input type="hidden" id="ticket_key" value="ST-3101-QDTyjbbHoOHvgPMdRBIg-cas" />
Then you can get it by Regular Extractor ticket_key=(.+)
Hope it helps.