I am wanting to access a WFS data service outside our company's network, and I have been having trouble trying to get my proxy to work through our firewall. One possible solution is to use Cross Domain JSON to get around this. The WFS server I want to access can return JSON wrapped in a callback function if requested, by appending: &outputFormat=json&format_options=callback:myCallback to the URL. (refer to these articles: http://snook.ca/archives/javascript/cross_domain_aj and http://www.xml.com/pub/a/2005/12/21/json-dynamic-script-tag.html for a description of the technique). Has anyone managed to get this to work with OpenLayers? Here is my WFS code: var parwfs = new OpenLayers.Layer.Vector("WFS Parcels", { strategies: [new OpenLayers.Strategy.BBOX()], protocol: new OpenLayers.Protocol.HTTP({ url: "http://wfs.data.linz.govt.nz/MYKEY/wfs";, headers: {"Content-Type": "plain/text"}, params: { version: "1.0.0", service: "WFS", request: "GetFeature", //srsName: "EPSG:2193", maxfeatures: "5", typename: "x823", outputFormat: "json", format_options: "callback:getGeo" }, format: json_format }), projection: new OpenLayers.Projection("EPSG:4326"), style: {strokeColor: "green", strokeWidth: 2, strokeOpacity: 0.5}, minScale: 50000, visibility: false }); map.addLayer(parwfs); How would I handle the sending to avoid it using XMLHttpRequest? And what about passing the response to a the callback function? Thanks, Robert Sanson
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