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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 39646] New: - UnknownHostException. Intermitent. Fixes if tomcat restarted.
Date Tue, 23 May 2006 18:26:44 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=39646

           Summary: UnknownHostException. Intermitent.  Fixes if tomcat
                    restarted.
           Product: Tomcat 5
           Version: 5.5.16
          Platform: Sun
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unknown
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: prashanthsukumaran@yahoo.com


Hi,

We have an application in the public space deployed on Sun Sparc Solaris 7, 
Tomcat 5.5.12, Jdk1.4.2_10.  Every thing is fine about this configuration.  

We would like to provide the users a single sign on like functionality. Since 
it is in the secured space(https) the reverse proxy, challenges back with a 
login page.  So I am screen scraping this login page and do a post along with 
the cookies to get the secure space.

The weird thing is that, all of a sudden my application in the public space 
throws an UnknownHostException, when getting to the application in the secured 
space. We are having intermittent problems for the last 6 months.  We had the 
same problem with Tomcat 4.1.29. 

      WebApp   -------> Screen Scraping ------>   WebApp
 [Public Space](http)                         [Secure Space](https)

When i restart tomcat i don't get this exception anymore, only to start 
throwing this exception after a few hours.  I even tried setting the 
negative.ttl = 0 in the java.security in my jvm. 

Any idea what could be causing this?  Please Help.

Thanks
Prashanth.

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