IGN layer load with referrer API key : 403 forbidden errors

[kazemar]

I try to load IGN layers from WMTS service with a referrer API key I created: https://wxs.ign.fr/key/geoportail/wmts?SERVICE=WMTS&REQUEST=GetCapabilities.

If I put it in Kano, it correctly gives me layers. However, when I display the layer, nothing appears. The network console shows 403 forbidden errors and the following response: <ExceptionReport><Exception exceptionCode="MissingParameter">Resource parameter not found</Exception></ExceptionReport>.

It could be a problem related to the permissions or the fact that the IGN WMTS service only supports the procedure oriented architectural style and not the resource oriented architectural style so that we need to use GetTile and not X/Y/Z based access.

[claustres]

According to the IGN documentation we should indeed use a GetTile request. Related to https://github.com/kalisio/kdk/issues/423.

[robinbourianes-kalisio]

I'm not sure adding WMTS GetTiles support will be enough, Geoportail securing mechanisms all require to add custom headers to the requests (referer, useragent or user/pass basicauth). Leaflet has no support to add custom headers when doing requests (https://github.com/Leaflet/Leaflet/issues/2091). I'll try but i'm a bit skeptical, even if the IGN doc doesn't mention http headers ...

[claustres]

Webservices have been updated recently by IGN and now uses generic keys (see https://geoservices.ign.fr/services-web-experts-cartes). For instance the following URL should work https://wxs.ign.fr/cartes/geoportail/wmts?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities. However, the following error is raised: _lodash2.default.get is not a function or its return value is not iterable.

It seems to be related to the fact that vector tiles are also exposed using WMTS but the layer does not provide a style.

[claustres]

Should be now fixed by https://github.com/kalisio/kdk/issues/423.