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When I query for larger features I get esri.config.defaults.io.proxyUrl is not set error. Can someone please explain why proxyurl is needed, how I should set it up, what should it point to, and any other relevant information about it? I am running Websphere and IBM http server.

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  • This is really four questions, and the last is an open ended one.
    – PolyGeo
    Sep 11 '13 at 21:26
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    I don't see why this question has been closed as too broad. Using a proxy in a JavaScript application is quite a simple thing to understand, and all the required information is present on a single page which @JohnGravois has linked in his answer. There are several question on the need of a proxy in OpenLayers (gis.stackexchange.com/questions/27729, gis.stackexchange.com/questions/24250), and if those are valid questions, then so is this question. Sep 12 '13 at 3:03
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the article below explains the purpose of proxies in the Esri JS API and the steps to deploy them.

https://developers.arcgis.com/en/javascript/jshelp/ags_proxy.html

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