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#479 closed defect (wontfix)

[WMS Client] MapServer causes Error 500 on remote server

Reported by:	dmorissette	Owned by:	mapserverbugs
Priority:	high	Milestone:
Component:	WMS Client	Version:	4.1
Severity:	normal	Keywords:
Cc:

Description

Bart van den Eijnden wrote:
> 
> When I try to simulate your problem (with your mapfile) I get an error 
> in the mapserver error file which says:
> 
> [Mon Nov 10 20:16:52 2003] [error] [client 127.0.0.1] Mon Nov 10 
> 20:16:52 2003 - msHTTPExecuteRequests(): HTTP request error. HTTP GET 
> request failed with status 500 () for 
>
http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/BK50?SERVICE=WMS&VERSION=1.1.0&LAYERS=BK50%3ABodenkarte&FORMAT=image%2Fpng&TRANSPARENT=TRUE&STYLES=&REQUEST=GetMap&WIDTH=600&HEIGHT=600&SRS=EPSG:31466&BBOX=2500004.166667,5600004.166667,2504995.833333,5604995.833333&EXCEPTIONS=application/vnd.ogc.se_inimage

> 
> 
> The strange thing is that when I use the URL directly in a browser I get 
> a map.
> 
> Does anybody have an idea why Mapserver thinks it is a HTTP 500 status 
> and not a 200 status which I get by using a sniffer directly on the 
> GetMap URL?
> 
> Best regards,
> Bart
> 


Here is a mapfile that reproduces this.

MAP
  EXTENT 2500000 5600000 2505000 5605000
## EXTENT 2490637 5574425 2738496 5821724
  IMAGECOLOR 255 255 255
  IMAGETYPE PNG
  SIZE 400 300
  STATUS ON
  NAME "DEMO"

  PROJECTION
    "init=epsg:31466"
  END

  WEB
    IMAGEPATH "/tmp/ms_tmp/"
    IMAGEURL "/ms_tmp/"
  END

  LAYER
    DEBUG TRUE
      NAME "BK50"
      TYPE RASTER
      STATUS ON
     CONNECTION "http://www.geoserver.nrw.de:80/GeoOgcWms1.3/servlet/BK50?"
      CONNECTIONTYPE WMS
      METADATA
        "wms_name"            "BK50:Bodenkarte"
        "wms_server_version"  "1.1.0"
        "wms_formatlist"      "image/png,image/jpeg,image/bmp"
        "wms_format"          "image/png"
        "wms_title"           "Geoserver Bodenkarte"
        "wms_srs" "EPSG:31466 EPSG:31462 EPSG:31492 EPSG:31467 EPSG:25831 
EPSG:25832 EPSG:25833"
         "wms_boundingbox" "EPSG:31466 2490637 5574425 2738496 5821724"
          "wms_latlonboundingbox" "5.8686 50.3018 9.5103 52.4726"
      END
  END
END

Change History (3)

comment:1 by dmorissette, 20 years ago

Using curl at the command line to download this URL does work.  odd.

comment:2 by dmorissette, 20 years ago

Status:	new → assigned

Andreas Müller wrote:

Hi Daniel,

that's consistent with the exception the remote server sends, which I already
cited in my 
first mail to the list.
Here it comes again:

<head><title>Error: 500</title></head>
<body>
<h1>Error: 500</h1>
<h2>Location: /GeoOgcWms1.3/servlet/BK50</h2><b>Internal Servlet Error:</b><br>
<pre>java.lang.NullPointerException
	at 
de.aedgraphics.geoogcwms.ogcwmsservlet.ServiceDispatcher.dispatch(ServiceDispatc
her.java:225)
	at 
de.aedgraphics.geoogcwms.ogcwmsservlet.OgcWmsServlet.serviceRequest(OgcWms
Servlet.java:590)
	at 
de.aedgraphics.geoogcwms.ogcwmsservlet.OgcWmsServlet.doGet(OgcWmsServlet.ja
va:469)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java)
	at org.apache.tomcat.facade.ServletHandler.doService(Unknown Source)
	at org.apache.tomcat.core.Handler.invoke(Unknown Source)
	at org.apache.tomcat.core.Handler.service(Unknown Source)
	at org.apache.tomcat.facade.ServletHandler.service(Unknown Source)
	at org.apache.tomcat.core.ContextManager.internalService(Unknown Source)
	at org.apache.tomcat.core.ContextManager.service(Unknown Source)
	at 
org.apache.tomcat.modules.server.Ajp12Interceptor.processConnection(Unknown 
Source)
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(Unknown Source)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(Unknown 
Source)
	at java.lang.Thread.run(Unknown Source)
</pre>
</body>

It seems that the remote server can't handle the request MapServer sends. Now I
don't 
think it's very **OGCish** to send a "ClassNotFound" exception if a piece of
software 
doesn't like a request.


Andreas




Daniel wrote:
> Which software is running on the server?  Could you check with the 
> developers if this is a known problem or if they have any specific 
> requirements from the WMS clients?

Andreas Müller wrote:
> The software is a german product called "Geoserver". It is **NOT** the WFS we
> all know from SourceForge. But they have (c)ed the name. You find it at 
> http://www.geoserver.de if you're interested.
> 
> I will contact them asap and check if they have special requirements.

comment:3 by dmorissette, 20 years ago

Resolution:	→ wontfix
Status:	assigned → closed

andreas.mueller@bfua.de wrote:
> Hi Daniel,
> 
> after talking to one of the admins of the "Geoserver (c)" we could solve our
problem. He 
> recommended me to talk to one Norbert Schauerte who has had the same problem that 
> we have. During our talk and after checking the mailing list I found out that
YOU had 
> already solved the problem!
> 
> The "Geoserver(c)" expects the HTTP User Agent to be "MSIE..." or "Mozilla...".
> 


Since the problem is really with the Geoserver(c) itself I'll mark this  as
WONTFIX.  

If you need a workaround until they fix their server then see 
http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0309/msg00477.html

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