The size of an URL is limited. Therefore I'm not able to request a WFS with a complex geometry. I read (Geoserver POST filter to WMS layer) that is possible to do in a WMS, but I didn't get it to work.
I'm using Postman to POST to my geoserver and add raw body data like this:
CQL_FILTER=INTERSECTS(geometry, POLYGON ((0 0, 1 1....))
I also tried it in key-value form type. I also tried url-encoding it first.
Does anyone know how to query with large geometries? (WKT in my case).