[mapserver-users] WCS GET_COVERAGE delivers corrupted geotiff

[John Cartwright]

 Hello All,

I'm running Mapserver 5.6.3 and have a WCS service configured.  I'm
finding that a GetCoverage request like:

http://mapserver.ngdc.noaa.gov/cgi-bin/public/etopo1/etopo1.tif?request=GetCoverage&service=WCS&version=1.1.1&COVERAGE=etopo1&crs=EPSG:4326&format=geotiff&resx=0.0083333333&resy=0.0083333333&bbox=-95,25,-75,40

delivers a corrupted geotiff that appears to have header information
prepended to the TIFF, e.g.

--wcs
Content-Type: text/xml
Content-ID: wcs.xml

<?xml version="1.0" encoding="UTF-8"?>
<Coverages
     xmlns="http://www.opengis.net/wcs/1.1"
     xmlns:ows="http://www.opengis.net/ows"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.opengis.net/ows/1.1
../owsCoverages.xsd">
  <Coverage>
    <Reference xlink:href="cid:coverage/out.tif"/>
  </Coverage>
</Coverages>
--wcs
Content-Type: image/tiff
Content-Description: coverage data
Content-Transfer-Encoding: binary
Content-ID: coverage/out.tif
Content-Disposition: INLINE

I've included the complete mapfile below.

I'm assuming that I have something misconfigured in either Mapserver or
Apache - can someone please help me here?

Thanks!

--john


MAP

NAME WCS_server
STATUS ON
SIZE 500 250
#SYMBOLSET ../etc/symbols.sym
EXTENT -180 -90 180 90
UNITS dd
SHAPEPATH "/nfs/gisdata/rasters"
IMAGECOLOR 255 255 255
FONTSET "/nfs/eogmapdata/fontset.txt"


#
# Start of web interface definition
#
WEB
  IMAGEPATH "/data/mapserver-vhost/html/tmp/"
  IMAGEURL "/tmp/"
  METADATA
    "wcs_label"                    "GMap WCS Demo Server" ### required
    "wcs_description"              "Some text description of the service"
    "wcs_onlineresource"          
"http://127.0.0.1/cgi-bin/mapserv.exe?" ### recommended
    "wcs_service_onlineresource"   "http://127.0.0.1/cgi-bin/mapserv.exe?"
  END
END

PROJECTION
  "init=epsg:4326"
END

OUTPUTFORMAT
  NAME GEOTIFF
  DRIVER "GDAL/GTiff"
  MIMETYPE "image/tiff"
  IMAGEMODE "BYTE"
  EXTENSION "tif"
  FORMATOPTION "COMPRESS=LZW"
END
OUTPUTFORMAT
  NAME GEOTIFF_FLOAT
  DRIVER "GDAL/GTiff"
  MIMETYPE "image/tiff"
  IMAGEMODE "FLOAT32"
  EXTENSION "tif"
  FORMATOPTION "COMPRESS=LZW"
END

LAYER
  NAME etopo1
  METADATA
    "wcs_label"           "Elevation/Bathymetry"  ### required
    "wcs_rangeset_name"   "Range 1"               ### required to
support DescribeCoverage request
    "wcs_rangeset_label"  "My Label"              ### required to
support DescribeCoverage request
  END
  TYPE RASTER ### required
  STATUS ON
  DATA ETOPO1_Ice_g.tif
  PROJECTION
    "init=epsg:4326"
  END
  DUMP TRUE ### required
END


END # Map File