[GIS] Allowing cross-domain access of third-party WMS server from OpenLayers

openlayers-2wms

I have a web site with an OpenLayers client. I also have a GeoServer running on the same domain. My OpenLayers uses services like WMS, GML, etc. from this GeoServer installation and everything runs fine.

Now, I want to add another WMS layer to my existing set of layers. This layer is provided by a third-party WMS (not owned by me). How can I add this layer to my OpenLayers by bypassing the cross-domain issue.

PS: I am aware that GeoServer allows adding third-party WMS as a new data store and lets me publish the available layers, but I am facing some projection issues there which I will be asking in a different question.

Best Answer

You only need a proxy if you are looking to do WFS or WMS GetFeatureInfo requests. Basic WMS requests should work out of the box in OpenLayers (or any other client).

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[GIS] Adding time dimension to layer in GeoServer

See http://docs.geoserver.org/stable/en/user/data/cascaded/wms.html#limitations Time (and elevation) are not supported in cascaded WMS layers. Feel free to contribute a patch.

[GIS] Retrieve WMS service from GeoWebCache with OpenLayers

Your Geoserver Instance and GeoWebCache should be running on different ports if on the same machine.

Then your GeoWebCache end point should be something like:

http://179.172.277.77:PORT/geowebcache/service/wms?

The flow is Openlayers => Standalone GeoWebCache => GeoServer

EDIT: (For Additional Question)

You look like you are using workspace aaz so your reference to the layer in geoWebCache should be aaz:departement not departement

Best Answer

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[GIS] Adding time dimension to layer in GeoServer

[GIS] Retrieve WMS service from GeoWebCache with OpenLayers

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