Hi Adam,

I still have the same problem "...The CAS server returned no 
response...." after I change to

<filter-mapping>
     <filter-name>CAS Validation Filter</filter-name>
     <url-pattern>/*</url-pattern>
 </filter-mapping>

from

<filter-mapping>
     <filter-name>CAS Validation Filter</filter-name>
     <url-pattern>/Recruiting/*</url-pattern>
 </filter-mapping>

I think it should be <url-pattern>/*</url-pattern>. I think I am not 
using the validation filter currently because of this 
<url-pattern>/Recruiting/*</url-pattern>

I did  integrate cas-client-core-3.1.1.jar into my web app. I thought I 
did not. The log file I copied for you was from my workstation testing 
machine and the cas and web application did work in my workstation 
testing machine. However, when I deployed cas and web application to 
server ( a linux machine), it becomes
"...The CAS server returned no response...." after cas login and 
redirect to my web application.

In my workstation I use <url-pattern>/*</url-pattern>

How to fix it? cas server problem? client problem or filter problem or 
others?

Please continue to help. It's still urgent.

Edward








Adam Rybicki wrote:
> Edward,
>
> As others have already confirmed, you must configure your CAS client 
> application to use the JA-SIG CAS Client library, which facilitates 
> communications with the CAS server.  It is ultimately the CAS Client 
> library that will allow request.getRemoteUser() to return the username 
> of the authenticated user.
>
> The logs you sent make this fairly clear.  The log of the CAS server 
> clearly shows CAS issuing a service ticket for user "edwardc."  It 
> appears that the server is working fine.
>
> The log file from the client shows a clue to your problem.  The client 
> is unable to load the CAS Client filters.  The JA-SIG CAS Client 
> library (a jar file, which at least on my computer is called 
> "cas-client-core-3.1.1.jar") needs to be in your Web application's 
> classpath.  As with any enterprise Java Web application, there is an 
> appropriate place to install this jar file.  Since I see you are using 
> Tomcat, in your case this place should be something like 
> <tomcat_dir>/webapps/Recruiting/WEB-INF/lib.
>
> Adam
>
> Edward Chen wrote:
>> I am kind of understanding...
>>
>> In order to display request.getRemoteUser() value in my test.jsp, I need 
>> to integrate cas client 3.1.1 to my application, for Recruiting 
>> application. The reason why my current test.jsp returns null value is 
>> because I haven't integrate cas client 3.21 with my application, Is it 
>> correct?
>>
>> I am done with the server side configuration, right?
>>
>> If so, how to integrate cas client 3.11 to my java/jsp application? do 
>> you have an instruction?
>>
>> Edward
>>
>> Scott Battaglia wrote:
>>   
>>> When CASifying an application, you integrate the CAS client with your 
>>> application.  You don't integrate the CAS client with the CAS server 
>>> software. The CAS client library is what allows the application to 
>>> communicate with the CAS server.
>>>
>>> You should be configuring the wrapper on YOUR application if you want 
>>> access to request.getRemoteUser().
>>>
>>> -Scott
>>>
>>> On Tue, May 20, 2008 at 11:22 PM, Edward Chen <[EMAIL PROTECTED] 
>>> <mailto:[EMAIL PROTECTED]>> wrote:
>>>
>>>     Adam and Scott,
>>>
>>>     It seems to me that I missing the client configuration. I tried to
>>>     locate HttpServletRequestWrapperFilter file but I don't find them
>>>     in my
>>>     cas 3.21 folder. So, I download "cas-client-3.1.1-release" and I find
>>>     HttpServletRequestWrapperFilter file in it. I wonder if I need to
>>>     integrate client into server. If yes, how to integrate
>>>     case-client-3.1.1? using maven? ??
>>>
>>>     I am stuck in this problem.
>>>
>>>     Edward
>>>
>>>     Adam Rybicki wrote:
>>>     > Edward,
>>>     >
>>>     > It's hard to tell what effect your cas.war file custom build may
>>>     have
>>>     > on CAS itself.  Let's assume for the time being, that this is fine.
>>>     >
>>>     > Did you have a chance to look inside the Tomcat logs as the error
>>>     > message was suggesting?  Getting no response from CAS could be
>>>     caused
>>>     > by a certificate error.  I looked at
>>>     > AbstractCasProtocolUrlBasedTicketValidator, and it is possible that
>>>     > this class would return null on a communication error with CAS
>>>     > server.  It logs the error and returns null.  Can you locate the log
>>>     > file?  I think that the CAS Client may be actually using the log
>>>     file
>>>     > of your application.
>>>     >
>>>     > Adam
>>>     >
>>>     > Edward Chen wrote:
>>>     >> Hi Scott and other experts,
>>>     >>
>>>     >> Hi,
>>>     >>
>>>     >> Just  a thought about this problem. I don't know if it will make a
>>>     >> difference.
>>>     >>
>>>     >> I think maybe the CAS in my tomcat  is different. Why?
>>>     >>
>>>     >> I deployed my CAS to Tomcat by other method - our own build.xml.
>>>     >>
>>>     >> CAS 3.2.1 is built with Maven 2.0.9. <http://2.0.9.> I generate
>>>     cas.war not by Maven,
>>>     >> but by my build.xml
>>>     >>
>>>     >> The current problem seems to me that the CAS only talks itself
>>>     and not
>>>     >> react to any applications. That is why there is
>>>     >>
>>>     >> "...The CAS server returned no response...." when CAS linking to an
>>>     >> application.
>>>     >>
>>>     >> What do you think?
>>>     >>
>>>     >> Edward
>>>     >>
>>>     >>
>>>     >> Scott Battaglia wrote:
>>>     >>
>>>     >>> Edward,
>>>     >>>
>>>     >>> Can you try using the CAS 20 filter and see if that works?
>>>     >>>
>>>     >>> -Scott
>>>     >>>
>>>     >>> On Fri, May 16, 2008 at 11:52 PM, Edward Chen
>>>     <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>>     >>> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>> wrote:
>>>     >>>
>>>     >>>     Here it's what I modify below. But it still doesn't work.
>>>     I have the
>>>     >>>     following exception. Can you tell what 's wrong with it?
>>>     Anything
>>>     >>>     wrong
>>>     >>>     with my cas filter?? Please help--very urgent
>>>     >>>
>>>     >>>
>>>     >>>      HTTP Status 500 -
>>>     >>>
>>>     >>>    
>>>     ------------------------------------------------------------------------
>>>     >>>
>>>     >>>     *type* Exception report
>>>     >>>
>>>     >>>     *message*
>>>     >>>
>>>     >>>     *description* _The server encountered an internal error ()
>>>     that
>>>     >>>     prevented it from fulfilling this request._
>>>     >>>
>>>     >>>     *exception*
>>>     >>>
>>>     >>>     javax.servlet.ServletException: The CAS server returned no
>>>     response.
>>>     >>>
>>>     >>>    
>>>      
>>> org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:152)
>>>     >>>
>>>     >>>    
>>>      
>>> org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:103)
>>>     >>>
>>>     >>>     *root cause*
>>>     >>>
>>>     >>>     org.jasig.cas.client.validation.TicketValidationException:
>>>     The CAS
>>>     >>>     server returned no response.
>>>     >>>
>>>     >>>    
>>>      
>>> org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:162)
>>>     >>>
>>>     >>>    
>>>      
>>> org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:129)
>>>     >>>
>>>     >>>    
>>>      
>>> org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:103)
>>>     >>>
>>>     >>>     *note* _The full stack trace of the root cause is
>>>     available in the
>>>     >>>     Apache Tomcat/5.5.25 logs._
>>>     >>>
>>>     >>>    
>>>     ------------------------------------------------------------------------
>>>     >>>
>>>     >>>
>>>     >>>          Apache Tomcat/5.5.25
>>>     >>>
>>>     >>>
>>>     >>>
>>>     >>>     ..........
>>>     >>>     <filter>
>>>     >>>         <filter-name>CAS Authentication Filter</filter-name>
>>>     >>>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
>>>     >>>             <init-param>
>>>     >>>               <param-name>casServerLoginUrl</param-name>
>>>     >>>          
>>>     <param-value>https://casserver:8443/CAS/login</param-value>
>>>     >>>             </init-param>
>>>     >>>             <init-param>
>>>     >>>               <param-name>service</param-name>
>>>     >>>
>>>     >>>    
>>>     <param-value>http://casserver:8080/Recruiting/test.jsp</param-value>
>>>     >>>             </init-param>
>>>     >>>             <init-param>
>>>     >>>               <param-name>serverName</param-name>
>>>     >>>           <param-value>casserver:8080</param-value>
>>>     >>>             </init-param>
>>>     >>>           </filter>
>>>     >>>
>>>     >>>           <filter>
>>>     >>>             <filter-name>CAS Validation Filter</filter-name>
>>>     >>>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.validation.Cas10TicketValidationFilter</filter-class>
>>>     >>>             <init-param>
>>>     >>>               <param-name>casUrlServerPrefix</param-name>
>>>     >>>           <param-value>https://casserver:8443/CAS</param-value>
>>>     >>>             </init-param>
>>>     >>>             <init-param>
>>>     >>>               <param-name>serverName</param-name>
>>>     >>>           <param-value>casserver:8080</param-value>
>>>     >>>             </init-param>
>>>     >>>           </filter>
>>>     >>>
>>>     >>>        <filter>
>>>     >>>              <filter-name>CAS HttpServletRequest Wrapper
>>>     >>>     Filter</filter-name>
>>>     >>>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class>
>>>     >>>        </filter>
>>>     >>>
>>>     >>>       <filter-mapping>
>>>     >>>           <filter-name>CAS Authentication Filter</filter-name>
>>>     >>>           <url-pattern>/*</url-pattern>
>>>     >>>       </filter-mapping>
>>>     >>>
>>>     >>>       <filter-mapping>
>>>     >>>           <filter-name>CAS Validation Filter</filter-name>
>>>     >>>           <url-pattern>/*</url-pattern>
>>>     >>>       </filter-mapping >
>>>     >>>
>>>     >>>       <filter-mapping>
>>>     >>>           <filter-name>CAS HttpServletRequest Wrapper
>>>     Filter</filter-name>
>>>     >>>           <url-pattern>/*</url-pattern>
>>>     >>>       </filter-mapping >
>>>     >>>     .............
>>>     >>>
>>>     >>>
>>>     >>>     Edward
>>>     >>>
>>>     >>>     Adam Rybicki wrote:
>>>     >>>     > Scott's right, of course.  The Thread Local filter is
>>>     not needed for
>>>     >>>     > what you need.  It becomes handy if you don't have
>>>     access to the
>>>     >>>     > HttpServletRequest.
>>>     >>>     >
>>>     >>>     > Adam
>>>     >>>     >
>>>     >>>     > Scott Battaglia wrote:
>>>     >>>     >> On Fri, May 16, 2008 at 7:32 PM, Adam Rybicki
>>>     >>>     <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>>>     <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
>>>     >>>     >> <mailto:[EMAIL PROTECTED]
>>>     <mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
>>>     <mailto:[EMAIL PROTECTED]>>>> wrote:
>>>     >>>     >>
>>>     >>>     >>     Edward,
>>>     >>>     >>
>>>     >>>     >>     Cross-posting to the wrong list (cas-dev) will not
>>>     speed up
>>>     >>>     a reply.
>>>     >>>     >>
>>>     >>>     >>     One thing you'll need is an additional filter.
>>>      Actually,
>>>     >>>     two of
>>>     >>>     >>     them, I think.  To make getRemoteUser() work,
>>>     you'll need them
>>>     >>>     >>     configured similar to this:
>>>     >>>     >>
>>>     >>>     >>       <filter>
>>>     >>>     >>         <filter-name>CAS HttpServletRequest Wrapper
>>>     >>>     Filter</filter-name>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class>
>>>     >>>     >>       </filter>
>>>     >>>     >>
>>>     >>>     >>       <filter>
>>>     >>>     >>         <filter-name>CAS Assertion Thread Local
>>>     >>>     Filter</filter-name>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.util.AssertionThreadLocalFilter</filter-class>
>>>     >>>     >>       </filter>
>>>     >>>     >>
>>>     >>>     >>       <filter-mapping>
>>>     >>>     >>         <filter-name>CAS HttpServletRequest Wrapper
>>>     >>>     Filter</filter-name>
>>>     >>>     >>
>>>     >>>     >>         <url-pattern>/*</url-pattern>
>>>     >>>     >>       </filter-mapping>
>>>     >>>     >>
>>>     >>>     >>       <filter-mapping>
>>>     >>>     >>         <filter-name>CAS Assertion Thread Local
>>>     >>>     Filter</filter-name>
>>>     >>>     >>
>>>     >>>     >>         <url-pattern>/*</url-pattern>
>>>     >>>     >>       </filter-mapping>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >>     What concerns me is that, while you are using the
>>>     JA-SIG CAS
>>>     >>>     >>     Client, the exception message you included appears
>>>     to have come
>>>     >>>     >>     from the Yale CAS Filter.  I don't think you need both.
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >> Adam beat me to it.  But you are including the
>>>     configuration
>>>     >>>     for the
>>>     >>>     >> JASIG CAS Client but an error message from the Yale CAS
>>>     client.
>>>     >>>     >> That's impossible unless you have both of them
>>>     configured, which I
>>>     >>>     >> don't think has ever been tried.  I'd recommend just
>>>     sticking with
>>>     >>>     >> one of them.  If you merely wish to read the
>>>     request.getRemoteUser,
>>>     >>>     >> you also won't need the ThreadLocal filter either.
>>>     >>>     >>
>>>     >>>     >> -Scott
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >>     Adam
>>>     >>>     >>
>>>     >>>     >>     Edward Chen wrote:
>>>     >>>     >>>     I installed CAS 3.2.1 and deployed successfully
>>>     with LDAP
>>>     >>>     in my
>>>     >>>     >>>     Windows XP and Tomcat5.25. Now I want to link the
>>>     simple jsp
>>>     >>>     >>>     application in Tomcat to CAS. I modified the CAS
>>>     filter in
>>>     >>>     >>>     web.xml as bellow. If I comment out "CAS
>>>     Validation Filter", I
>>>     >>>     >>>     got redirected to CAS and passed CAS login and
>>>     went back
>>>     >>>     to the
>>>     >>>     >>>     application. However, I got "null" value
>>>     >>>     >>>     (<%=request.getRemoteUser()%>) in my test.jsp. It
>>>     should be
>>>     >>>     >>>     supposed to have the CAS login username. If I don't
>>>     >>>     comment out
>>>     >>>     >>>     "CAS Validation Filter", I got redirected to CAS and
>>>     >>>     passed CAS
>>>     >>>     >>>     login. But when CAS went back to the application, it
>>>     >>>     throws out
>>>     >>>     >>>     exception, something like "*exception*
>>>     >>>     >>>     javax.servlet.ServletException: Unable to validate
>>>     >>>     >>>     ProxyTicketValidator
>>>     >>>     >>>     [[edu.yale.its.tp.cas.client.ProxyTicketValidator
>>>     >>>     >>>     proxyList=[null]
>>>     >>>     >>>     [edu.yale.its.tp.cas.client.ServiceTicketValidator
>>>     ..... " It
>>>     >>>     >>>     seems to me that the validation doesn't work. What is
>>>     >>>     wrong with
>>>     >>>     >>>     it? How to fix it? any recommendation?? any thing
>>>     wrong
>>>     >>>     with the
>>>     >>>     >>>     following CAS filter?? Very urgent help needed!!!
>>>     ........
>>>     >>>     >>>     <filter> <filter-name>CAS Authentication
>>>     Filter</filter-name>
>>>     >>>     >>>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
>>>     >>>     >>>     <init-param>
>>>     <param-name>casServerLoginUrl</param-name>
>>>     >>>     >>>    
>>>     <param-value>https://xxxxxxxxx:8443/CAS/login</param-value>
>>>     >>>     >>>     </init-param> <init-param>
>>>     <param-name>service</param-name>
>>>     >>>     >>>
>>>     >>>    
>>>     <param-value>http://xxxxxxxxx:8080/Recruiting/test.jsp</param-value>
>>>     >>>     >>>     </init-param> <init-param>
>>>     <param-name>serverName</param-name>
>>>     >>>     >>>     <param-value>xxxxxxx:8080/</param-value> </init-param>
>>>     >>>     </filter>
>>>     >>>     >>>     <filter> <filter-name>CAS Validation
>>>     Filter</filter-name>
>>>     >>>     >>>
>>>     >>>    
>>>     
>>> <filter-class>org.jasig.cas.client.validation.Cas10TicketValidationFilter</filter-class>
>>>     >>>     >>>     <init-param>
>>>     <param-name>casUrlServerPrefix</param-name>
>>>     >>>     >>>     <param-value>https://xxxxxxx:8443/CAS</param-value>
>>>     >>>     >>>     </init-param> <init-param>
>>>     <param-name>serverName</param-name>
>>>     >>>     >>>     <param-value>xxxxxxxxxxx:8080/</param-value>
>>>     </init-param>
>>>     >>>     >>>     </filter> <filter-mapping> <filter-name>CAS
>>>     Authentication
>>>     >>>     >>>     Filter</filter-name> <url-pattern>/*</url-pattern>
>>>     >>>     >>>     </filter-mapping> <!--filter-mapping> <filter-name>CAS
>>>     >>>     >>>     Validation Filter</filter-name>
>>>     <url-pattern>/*</url-pattern>
>>>     >>>     >>>     </filter-mapping --> ...................
>>>     >>>     >>>     ______________________________
>>>     >>>     >>>     _________________
>>>     >>>     >>>     Yale CAS mailing list
>>>     >>>     >>>     [email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>
>>>     >>>     <mailto:[email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>>
>>>     >>>     >>>     http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>     >>
>>>     >>>     >>     _______________________________________________
>>>     >>>     >>     Yale CAS mailing list
>>>     >>>     >>     [email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>
>>>     >>>     <mailto:[email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>>
>>>     >>>     >>     http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >>
>>>     >>>     >> --
>>>     >>>     >> -Scott Battaglia
>>>     >>>     >> PGP Public Key Id: 0x383733AA
>>>     >>>     >> LinkedIn: http://www.linkedin.com/in/scottbattaglia
>>>     >>>     >>
>>>     >>>    
>>>     ------------------------------------------------------------------------
>>>     >>>     >>
>>>     >>>     >> _______________________________________________
>>>     >>>     >> Yale CAS mailing list
>>>     >>>     >> [email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>
>>>     >>>     >> http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>     >>
>>>     >>>     > _______________________________________________
>>>     >>>     > Yale CAS mailing list
>>>     >>>     > [email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>
>>>     >>>     > http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>     >
>>>     >>>
>>>     >>>     _______________________________________________
>>>     >>>     Yale CAS mailing list
>>>     >>>     [email protected] <mailto:[email protected]>
>>>     <mailto:[email protected] <mailto:[email protected]>>
>>>     >>>     http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>
>>>     >>>
>>>     >>>
>>>     >>>
>>>     >>> --
>>>     >>> -Scott Battaglia
>>>     >>> PGP Public Key Id: 0x383733AA
>>>     >>> LinkedIn: http://www.linkedin.com/in/scottbattaglia
>>>     >>>
>>>     ------------------------------------------------------------------------
>>>     >>>
>>>     >>> _______________________________________________
>>>     >>> Yale CAS mailing list
>>>     >>> [email protected] <mailto:[email protected]>
>>>     >>> http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>>
>>>     >>>
>>>     >>
>>>     >> _______________________________________________
>>>     >> Yale CAS mailing list
>>>     >> [email protected] <mailto:[email protected]>
>>>     >> http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >>
>>>     >>
>>>     > _______________________________________________
>>>     > Yale CAS mailing list
>>>     > [email protected] <mailto:[email protected]>
>>>     > http://tp.its.yale.edu/mailman/listinfo/cas
>>>     >
>>>
>>>     _______________________________________________
>>>     Yale CAS mailing list
>>>     [email protected] <mailto:[email protected]>
>>>     http://tp.its.yale.edu/mailman/listinfo/cas
>>>
>>>
>>>
>>>
>>> -- 
>>> -Scott Battaglia
>>> PGP Public Key Id: 0x383733AA
>>> LinkedIn: http://www.linkedin.com/in/scottbattaglia
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Yale CAS mailing list
>>> [email protected]
>>> http://tp.its.yale.edu/mailman/listinfo/cas
>>>   
>>>     
>>
>> _______________________________________________
>> Yale CAS mailing list
>> [email protected]
>> http://tp.its.yale.edu/mailman/listinfo/cas
>>
>>   
> _______________________________________________
> Yale CAS mailing list
> [email protected]
> http://tp.its.yale.edu/mailman/listinfo/cas
>   

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