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Here's the basic code for the handler. Additionally I would read a cookie from the context.Response object to identify the user and check that the request has come from a valid domain. using System; using System.IO; using System.Net; using System.Net.Cache; using System.Web; namespace Web { public class TileAsyncHandler : IHttpAsyncHandler { private ...


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Judging from the location of your point, I'm willing to bet that your data is in EPSG:4326 rather than EPSG:3857. Confusing latitude/longitude values with web Mercator X/Y values usually results in a point near the Equator/Prime Meridian intersection.


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Try setting project CRS first to EPSG:3857 with On-The-fly-reprojectionenabled, then add a layer from the openlayers plugin, then add your postgis datasource. If that does not work, please add the extent of the postgis layer, as reported by rightclick, Properties, metadata tab.


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my best bet is that adding other layers from the same ArcGIS Server instance is triggering a CORS check by the JSAPI and that since both the server and your browser support CORS, the proxy isn't necessary. https://developers.arcgis.com/javascript/jshelp/ags_proxy.html



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