[Users] WMSCapabilitiesStore won't load capabilities from server

[Matt Priour]

My best guess is that you are experiencing the cross-site scripting 
restriction (ie same-origin policy). The browser isn't smart enough to 
figure out that 2 domains that resovle to the same IP address are the same. 
For example:
http://mycomputername:8080, http://127.0.0.1:8080, http://localhost:8080 are 
all the same to you & I but to your browser those are different domains and 
scripts from one domain can't directly read XML output from another domain.
Also http://localhost:9090 & http://localhost:8080 are not considered the 
same domain as they differ in port number, so the restriction would hit you 
there too.

see http://en.wikipedia.org/wiki/Same_origin_policy for more info

OpenLayers ships with a scripting python based scripting proxy which you can 
use. If you need another language, I think Mapfish has similar proxies in 
Java & Ruby. You can also find numerous examples for other languages on the 
internet.

Eventually you will need one of these script proxies so you should 
familiarize yourself with them and begin using it.

Matt Priour
Kestrel Computer Consulting

--------------------------------------------------
From: "Kai Culemann" <kai.culemann at bluecall.de>
Sent: Monday, December 28, 2009 10:40 AM
To: <users at geoext.org>
Subject: [Users] WMSCapabilitiesStore won't load capabilities from server

> Hi,
> i've a problem using GeoExt.data.WMSCapabilitiesStore with a wms 
> (GeoServer).
>
> When i try to request the capabilities-document from the server firebug 
> tells me
> "Failed to load source for: 
> http://localhost:8080/geoserver/ows?service=wms&version=1.1.1&request=GetCapabilities"
>
> When i put the request in the browser-url, i get an 
> "application/vnd.ogc.wms_xml"-document, which seems right.
> When i save this document to disc and use it with the 
> WMSCapabilitiesStore, it works fine.
>
> How can i get the capabilities from my geoserver to my application without 
> saving the capabilities-document to disk?
>
> the source:
> Ext.onReady(function() {
>        store = new GeoExt.data.WMSCapabilitiesStore({
>            url: 
> "http://localhost:8080/geoserver/ows?service=wms&version=1.1.1&request=GetCapabilities",
>        });
>        store.load();
>        [...some other code...]
> });
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