Combining GeoServer vector tiles with QGIS

Question

I am using QGIS 3.8 (or 3.4) with the vector tile plugin: https://github.com/geometalab/Vector-Tiles-Reader-QGIS-Plugin I've also installed the vector tiles plugin for GeoServer 2.15.1.

The problem that I am facing is how to integrate these 2 plugins. The tutorial on GeoServer handles how to integrate OpenLayers with Vector tiles.

But the QGIS plugin requests a:

• TileJSON url
• and/or a GL Style JSON url

I cannot find in the GeoServer documentation anything about what these URL's might be.

I've tried a couple of urls based on what I see Openlayers is doing, but no progress.

Does anyone have an idea of how to make this work?

EDIT: added extra picture for Dror:

EDIT 2: I did more investigating, I think the QGIS plugin needs a capabilities document specifically looking like:

Answer 1

You can build a tilejson that's a spec by mapbox and you can build GL JSON style sheet with resources like sprites,glyps and fonts.Thats what QGIS requires. Open layers has a extension/plugin for GL JSON styling for vector tiles. You can use several open source tools for building style sheets.

Answer 2

Assuming you have defined your service to output vector tiles the url for the tiles should be something like this:

http://pcpb620:8080/geoserver/gwc/service/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=belmap:buildings&TILEMATRIX=EPSG:4326:{z}&TILEMATRIXSET=EPSG:4326&FORMAT=application/vnd.mapbox-vector-tile&TILECOL={x}&TILEROW={y}

This type of URL should work in OpenLayers as well.

EDIT

It seems geoserver doesnt support outputing tilejson.
As @GeospatialInformationTech stated the implementations of tilejson are listed here.

You can however connect regular WFS, WMS and WMTS services from GeoServer to QGIS, for a WMTS source you can use a url like:

http://pcpb620:8080/geoserver/gwc/service/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=belmap:buildings&TILEMATRIX=EPSG:4326:{z}&TILEMATRIXSET=EPSG:4326&FORMAT=image/png&TILECOL={x}&TILEROW={y}