[OpenLayers-Users] Problem with cross-origin

[Phil Scadden]

One other issue with letting users add layers from arbitrary OGC 
servers, is making sure the server supports the features your 
application needs. Doing a getcaps is a useful security check (dont add 
a URL to whitelist unless you get a valid getCaps returned), but you 
probably want to parse it any to ensure it supports your CRS etc.

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