GDAL cannot retrieve SRID from ArcGIS MapServer layer

[basteed]

I am trying to import a raster source into QGIS with SRS: EPSG:3109. See the error resulting from the following command:

$ gdal_translate --debug on "http://gps.digimap.gg/arcgis/rest/services/JerseyBaseMap/MapServer?f=json&pretty=true" JerseyBaseMapLayer.xml -of WMS
HTTP: Fetch(http://gps.digimap.gg/arcgis/rest/services/JerseyBaseMap/MapServer?f=json&pretty=true)
WMS: Did not get WKID
HTTP: Fetch(http://gps.digimap.gg/arcgis/rest/services/JerseyBaseMap/MapServer?f=json&pretty=true)
ERROR 4: `/tmp/file.dat' not recognised as a supported file format.

GDALOpen failed - 4
`/tmp/file.dat' not recognised as a supported file format.

Issue described here: ​http://gis.stackexchange.com/questions/162069/wkid-issue-when-adding-raster-layer-from-arcgis-mapserver-to-qgis-via-rest

gdal installed via homebrew on Mac OS X 10.9.5

[basteed]

Upon further investigation, it appears that the error is raised due to this map server's JSON "spatialReference" values using a "wkt" key in favour of either "wkid" or latestWkid" keys. JSON on map servers using these latter type can be successfully parsed/translated.

The particular piece of code responsible appears to be the GDALWMSDatasetGetConfigFromArcGISJSON method - line 433 in the WMS driver here: ​https://github.com/etiennesky/gdal-netcdf/blob/master/gdal/frmts/wms/wmsdriver.cpp

What I don't understand is why this method does not also parse the value for a "wkt" key and translate that from various recognised formats (PROJ is used in the example I gave).

[Even Rouault]

In 40212:

WMS: ArcGIS miniserver: use latestWkid and wkt metadata (fixes #6112)

[basteed]

Many thanks for the fix.