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From Greg Zoller <>
Subject Jasper, Java, and X11 Dependencies
Date Sat, 19 Jul 2003 21:40:42 GMT

I'm having a problem where I log into a server w/telnet, and run JBoss 
(w/embedded tomcat).

The server fails in jasper with X11 auth problem.

I have a workaround: use ssh -X to handle X.  If I use ssh -X instead of 
telnet, everything works fine.  But because I can't explain why there is 
any X11 dependency for our server-side app, my boss deems this fix a 
"hack", and requires me to find a "real solution".

The error is:

Can't connect to X11 window server ...

Why is there any X11 dependency on a server-side app?  We have no 
servlets or anything like that.  We are using apache struts.


My login page comes up (a JSP page)
This page forwards to my first app page, which causes the X11 error.
Figuring maybe something on this page was too complex (graphical, or
whatever), I replaced it with another JSP page containing "Hello world"
and nothing else.  No dice... same X11 problem.

I've tried building a new Linux server w/o any X11 installed on the box 
at all.  This time I get even stranger errors:

00:12:49,053 ERROR [Engine] ApplicationDispatcher[/codatest] 
Servlet.service() for servlet jsp threw exception
cannot open shared object file: No such file or directory

When I created a symlink to fix this I got my old X11 error back

It seems something is still trying to use graphics.

Is there a way to handle this situation or is using ssh -X my only option?

Any explanation of this situation would be most appreciated.


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