Opened 14 years ago

Last modified 14 years ago

#3464 closed defect

gdal_translate cannot download from WMS interface at geoportal.cuzk.cz — at Initial Version

Reported by: voland Owned by: warmerdam
Priority: normal Milestone: 1.8.0
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords: WMS useragent
Cc: warmerdam

Description

There is a WMS service in Czech Republic. It can be configured the following way:

<GDAL_WMS> <Service name="WMS"> <Version>1.3.0</Version> <ServerUrl>http://geoportal.cuzk.cz/wmsdata13/RASZM10/wms.asp?SID=&amp;</ServerUrl>

<CRS>EPSG:32633</CRS> <ImageFormat>image/png</ImageFormat> <Layers>GR_ZM10</Layers> </Service>

<DataWindow> <UpperLeftX>540000</UpperLeftX> <LowerRightX>545000</LowerRightX> <LowerRightY>5608000</LowerRightY> <UpperLeftY>5614000</UpperLeftY>

<SizeX>2500</SizeX> <SizeY>3000</SizeY> </DataWindow>

<Cache> <Path>/cache</Path> <Depth>1</Depth> </Cache>

<MaxConnections>1</MaxConnections>

<BlockSizeX>500</BlockSizeX> <BlockSizeY>500</BlockSizeY>

</GDAL_WMS>

It can be run with the following command:

gdal_translate -of ENVI wms.xml test.envi

The very first URL generated by gdal_translate cannot be downloaded:

Input file size is 2500, 3000 0ERROR 1: GDALWMS: Unable to download block 0, 0.

URL:

http://geoportal.cuzk.cz/wmsdata13/RASZM10/wms.asp?SID=&request=GetMap&version=1.3.0&layers=GR_ZM10&styles=&crs=EPSG:32633&format=image/png&width=500&height=500&bbox=540000.00000000,5613000.00000000,541000.00000000,5614000.00000000

HTTP status code: 200, error: (null).

ERROR 1: IReadBlock failed at X offset 0, Y offset 0 ERROR 1: GetBlockRef failed at X block offset 0, Y block offset 0

But if opened in Firefox, this URL is downloaded immediately.

It is possible that gdal_translate is missing something in HTTP Header like user agent, session ID or something that allows WMS server to check if it is a web browser or other piece of software.

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