curl error

[Pratap Anchuri]

we are using Java mapscripting  program to access terraserver's images
through WMS service. We r getting following error msg when the program is
run. with debug on in Map file for the wms layer.

java.lang.UnknownError: WMS GetMap request failed for layer 'aerial'
(Status -6: ).
 at edu.umn.gis.mapscript.mapscriptJNI.mapObj_draw(Native Method)
 at edu.umn.gis.mapscript.mapObj.draw(mapObj.java:397)
 at serv.DrawMap.main(DrawMap.java:41)
HTTP: Starting to prepare HTTP requests.

HTTP request: id=0, http://terraservice.net/ogcmap.ashx?
LAYERS=DRG&REQUEST=GetMap&SERVICE=WMS&FORMAT=image%
2Fjpeg&STYLES=&HEIGHT=500&VERSION=1.1.1&SRS=EPSG:26910&WIDTH=600&BBOX=54720
0%2C4181733%2E3333333335%2C553600%2C4187066%
2E6666666665&TRANSPARENT=TRUE&EXCEPTIONS=application/vnd.ogc.se_inimage

HTTP: Before download loop

HTTP: After download loop

msHTTPExecuteRequests() timing summary per layer (connect_time +
time_to_first_packet + download_time = total_time in seconds)

HTTP: request failed with curl error code 6 () for
http://terraservice.net/ogcmap.ashx?
LAYERS=DRG&REQUEST=GetMap&SERVICE=WMS&FORMAT=image%
2Fjpeg&STYLES=&HEIGHT=500&VERSION=1.1.1&SRS=EPSG:26910&WIDTH=600&BBOX=54720
0%2C4181733%2E3333333335%2C553600%2C4187066%
2E6666666665&TRANSPARENT=TRUE&EXCEPTIONS=application/vnd.ogc.se_inimage

Layer 0: 0.000 + 0.000 + 0.000 = 0.000s
Exception in thread "main"

And the map file used is :

MAP
  NAME STATES
  STATUS ON
  SIZE 600 500
  EXTENT 547200.00 4182400.00 553600.00 4186400.00
  #UNITS METERS
  #SHAPEPATH "gisdata"
  #TEMPLATEPATTERN "itasca"

  IMAGETYPE PNG
  PROJECTION
   #   "proj=utm"
   #   "ellps=GRS80"
   #   "zone=15"
   #   "north"
   #   "no_defs"
   #
   #   OR:
   #
      "init=epsg:26910"
   END

   WEB
    IMAGEPATH 'C:\eclipse\workspace\MapSeverProj\Output\tmp\'
 IMAGEURL  '/tmp/'
   END

LAYER
    NAME "aerial"
    TYPE RASTER
    DEBUG ON
    STATUS ON

    CONNECTIONTYPE WMS
    CONNECTION "http://terraservice.net/ogcmap.ashx?"
    METADATA

 #VERSION=1.1.1&SERVICE=wms&LAYERS=DRG&FORMAT=image/jpeg&STYLES=&req
uest=GetMap
     "wms_name" "DRG"
     "wms_request" "GetMap"
     "wms_srs" "EPSG:26910"
  "wms_format" "image/jpeg"
  "wms_bbox" "547,200.00 4,182,400.00 553,600.00
4,186,400.00"
  "wms_width" "800"
  "wms_height" "500"
  "wms_server_version"  "1.1.1"
  "wms_Exceptions" "application/vnd.ogc.se_xml"
 END
  END

END


we have placed libcurl.dll in windows system directory.

Any suggest for the possible cause of error.

Thanks in advance.

pratap