Not mentioned so far: it looks like it might be a session timeout on
the login screen per this (human) conversation in this forum last
Summer:

http://comments.gmane.org/gmane.comp.java.jasig.cas.user/17973

... which references https://issues.jasig.org/browse/CAS-992





On Mon, Jan 9, 2012 at 2:34 PM, Jared Hoover <[email protected]> wrote:
> Here's the error I'm getting:
>
> Jan 9, 2012 11:10:21 AM org.apache.catalina.core.StandardWrapperValve invoke
> SEVERE: Servlet.service() for servlet cas threw exception
> org.springframework.webflow.conversation.NoSuchConversationException: No
> conversation could be found with id '1' -- perhaps this conversation has
> ended?
>        at
> org.springframework.webflow.conversation.impl.ConversationContainer.getConversation(ConversationContainer.java:134)
>        at
> org.springframework.webflow.conversation.impl.SessionBindingConversationManager.getConversation(SessionBindingConversationManager.java:116)
>        at
> org.springframework.webflow.execution.repository.support.AbstractFlowExecutionRepository.getConversation(AbstractFlowExecutionRepository.java:183)
>        at
> org.jasig.cas.web.flow.CasFlowExecutionKeyFactory.validateUUID(CasFlowExecutionKeyFactory.java:138)
>        at
> org.jasig.cas.web.flow.CasFlowExecutionKeyFactory.parseFlowExecutionKey(CasFlowExecutionKeyFactory.java:102)
>        at
> org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:164)
>        at
> org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
>        at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
>        at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
>        at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
>        at
> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>        at
> org.jasig.cas.web.init.SafeDispatcherServlet.service_aroundBody2(SafeDispatcherServlet.java:115)
>        at
> org.jasig.cas.web.init.SafeDispatcherServlet.service_aroundBody3$advice(SafeDispatcherServlet.java:44)
>        at
> org.jasig.cas.web.init.SafeDispatcherServlet.service(SafeDispatcherServlet.java:1)
>        at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>        at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>        at
> com.github.inspektr.common.web.ClientInfoThreadLocalFilter.doFilter(ClientInfoThreadLocalFilter.java:63)
>        at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>        at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>        at
> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
>        at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
>        at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
>        at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
>        at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>        at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>        at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>        at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>        at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>        at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>        at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>        at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
>        at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
>        at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
>        at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
>        at java.lang.Thread.run(Thread.java:662)
>
> It looks like it's always the same error message but sometimes the id is a
> different single digit number and most often it's 1.  I also have changed us
> from java 1.7.0 back to java 1.6.0_27 on this server.
>
> Thanks,
> Jared
>
>
> On 09/27/2011 11:55 AM, Tillinghast, Andrew P. wrote:
>>
>> CAS unavailable is the default error handling for any error encountered by
>> CAS.
>>
>> If you have a development instance of CAS you can comment out
>> the<error-page>  entries in your web.xml and the errors will display
>> onscreen.
>>
>> Depending on the the nature of the error, particularly jsp errors, the
>> error will log to you localhost log file instead of the CAS or Catalina log
>> files.  i.e. localhost.2011-09-27.log
>>
>>
>> -Andrew
>>
>> On Sep 27, 2011, at 2:43 PM, Jared Hoover wrote:
>>
>>
>>>
>>> We have a CAS 3.4.8 server configured for ldap against our AD
>>> infrastructure.  It allows SSO to our various web applications and to google
>>> apps.  On occasion when a user has entered their username/password at the
>>> CAS login screen they're presented with an error message saying that "CAS is
>>> unavailable".  I've searched around and haven't found anything conclusive on
>>> this error message.  I'm not seeing any errors in the catalina.out log file
>>> either.  It's running on Tomcat 6.0.24 with jdk 1.7.0 x86_64.  Any
>>> assistance in resolving this would be greatly appreciated.
>>>
>>> Thanks,
>>> Jared
>>>
>
>
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-- 
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