Sinking X11 from AWT - Re: AW: servlet error..

[David Crooke <da...@convio.com>]

This is a well known bug in AWT / Swing. An alternative to changing the Java library is to use something to sink that errant X11 connection -
we use Xvnc for this purpose. Check back post by me on this list or jserv-user for details.

http://www.uk.research.att.com/vnc/

Krishna Kishore Thotakura wrote:

> Ralf,
>  There is X server running on the machine running the WEb Server. I'm running
> Red Hat 7.0. The servlet runs fine when i am logged onto the WEb server m/c.
>
> I think that the Servlet is able to access the X-Server while i am logged in but
> it is unable to access it after i log out.
>
> Please let me know if i need to make any changes in the configuration files
> of X11-library in order to allow, tomcat-java process that i started in the
> background, to access the X-Server.
>
> thanks.
>
> "Tuukk4 |[:)<-<| p4s4n3n" wrote:
> >
> > hei
> > Java AWT really needs X (Stupid) to run but using Pure Java AWT (can be found at http://www.eteks.com/pja/en/) you can make it go away:)
> > I have used this for pruduct succesfully.. before it i was sooo frustrated
> >
> > Tuukka
> >
> > ps. eteks server is slow:P
> >
> > ---
> > --Me olemme keskella jotain. jossa olemme totaalisen ulkopuolisia--
> >
> > On Wed, 30 May 2001 08:51:45
> >  Ralph Einfeldt wrote:
> > >The AWT classes need an x-server to work with images.
> > >
> > >Can it be that there isn't one running, when this error happens ?
> > >
> > >> -----Ursprüngliche Nachricht-----
> > >> Von: Krishna Kishore Thotakura [mailto:kishore@itsc.uah.edu]
> > >> Gesendet: Mittwoch, 30. Mai 2001 01:05
> > >> An: tomcat-user@jakarta.apache.org
> > >> Betreff: servlet error..
> > >>
> > >>
> > >> Hi,
> > >>  i am trying to write an image to the outputstream of a
> > >> servlet. The image is
> > >> actually obtained from an invisible awt Canvas.
> > >> I'm using Jimi package to encode the Image into JPEG format
> > >> and writing this
> > >> out to the ServletOutputStream. Sometimes this works fine and
> > >> i see a nice
> > >> image in the browser but at times, i get the following error:
> > >> ----in tomcat.log----
> > >> Xlib: connection to ":0.0" refused by server
> > >> Xlib: Invalid MIT-MAGIC-COOKIE-1 key
> > >>
> > >> ----in browser ---
> > >> Error: 500
> > >> Location: /wms/servlet/WmsServlet
> > >> Internal Servlet Error:
> > >>
> > >> java.lang.NoClassDefFoundError
> > >>      at java.lang.Class.forName0(Native Method)
> > >>      at java.lang.Class.forName(Class.java:120)
> > >>      at java.awt.Toolkit$2.run(Toolkit.java:498)
> > >>      at java.security.AccessController.doPrivileged(Native Method)
> > >>      at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:489)
> > >>      at java.awt.Component.getToolkitImpl(Component.java:657)
> > >>      at java.awt.Component.getToolkit(Component.java:641)
> > >>      at java.awt.Component.createImage(Component.java:2265)
> > >>      at stt.View.ViewJava3D.initMem(ViewJava3D.java:190)
> > >>      at stt.View.ViewJava3D.(ViewJava3D.java:214)
> > >>      at stt.Display.DisplayManager.initView(DisplayManager.java:126)
> > >>      at stt.Display.DisplayManager.(DisplayManager.java:64)
> > >>      at sttx.Display.GeoDisplayManager.(GeoDisplayManager.java:79)
> > >>      at WmsServlet.init(WmsServlet.java:49)
> > >>
> > >> Any comments,suggestions,explanations would be greatly appreciated.
> > >>
> > >
> >
> > Get 250 color business cards for FREE!
> > http://businesscards.lycos.com/vp/fastpath/
>
> --
> Krishna Kishore Thotakura.
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