We're using our own proxy system to handle large requests, and it's been working fine with relatively large data. But we just tried it with a very large request (the url is 11000 chars long) and we're getting this error from ESRI:
<H2>The requested URL could not be retrieved</H2> <HR noshade size="1px"> <P> While trying to retrieve the URL: <A HREF="http://serverapps.esri.com/arcgis/rest/services/Geometry/GeometryServer/buffer?f=json&unit=9002&unionResults=true&geometries={"geometryType":"esriGeometryPolygon","geometries":[{"type":"polygon","rings":[[[-85.6824523439999,38.27078127],[-85.6824452239999,38.2707569840001],[-85.6822534619999,38.2701141190001],[-85.6822503239999,38.2700985370001],[-85.6822502309999,38.2700827470001],[-85.6822532969999,38.2700670900001],[-85.6822594229999,38.2700520810001],[-85.6822682879999,38.2700378980001],[-85.6822800099999,38.2700250520001],[-85.6826306369999,38.2696930810001],[-85.6828229879999,38.2697147530001],[-85.6829108699999,38.2698597450001],[-85.6830089949999,38.2704409360001],[-85.6828255319999,38.2705497780001],[-85.6827930119999,38.2706837170001],[-85.6827629179999,38.2706923250001],[-85.6824523439999,38.27078127]]],"_ring":0,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null},"_extent":{"type":"extent","xmin":-85.6830089949999,"ymin":38.2696930810001,"xmax":-85.6822502309999,"ymax":38.27078127,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null}}},{"type":"polygon","rings":[[[-85.6846231299999,38.2713677510001],[-85.6845992959999,38.2714397920001],[-85.6839764049999,38.2712263600001],[-85.6838380709999,38.271150817],[-85.6838034999999,38.27107606],[-85.6837734959999,38.2710120610001],[-85.6838018319999,38.2708592920001],[-85.6839231719999,38.270752412],[-85.6842104789999,38.2705878820001],[-85.6843239469999,38.27049586],[-85.6843768429999,38.2703630430001],[-85.6843789869999,38.2702842310001],[-85.6844271709999,38.27029308],[-85.6849534329999,38.2703877170001],[-85.6849395399999,38.2704283960001],[-85.6847229589999,38.271064772],[-85.6846231299999,38.2713677510001]]],"_ring":0,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null},"_extent":{"type":"extent","xmin":-85.6849534329999,"ymin":38.2702842310001,"xmax":-85.6837734959999,"ymax":38.2714397920001,"spatialReference":{"wk">http://serverapps.esri.com/arcgis/rest/services/Geometry/GeometryServer/buffer?f=json&unit=9002&unionResults=true&geometries={"geometryType":"esriGeometryPolygon","geometries":[{"type":"polygon","rings":[[[-85.6824523439999,38.27078127],[-85.6824452239999,38.2707569840001],[-85.6822534619999,38.2701141190001],[-85.6822503239999,38.2700985370001],[-85.6822502309999,38.2700827470001],[-85.6822532969999,38.2700670900001],[-85.6822594229999,38.2700520810001],[-85.6822682879999,38.2700378980001],[-85.6822800099999,38.2700250520001],[-85.6826306369999,38.2696930810001],[-85.6828229879999,38.2697147530001],[-85.6829108699999,38.2698597450001],[-85.6830089949999,38.2704409360001],[-85.6828255319999,38.2705497780001],[-85.6827930119999,38.2706837170001],[-85.6827629179999,38.2706923250001],[-85.6824523439999,38.27078127]]],"_ring":0,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null},"_extent":{"type":"extent","xmin":-85.6830089949999,"ymin":38.2696930810001,"xmax":-85.6822502309999,"ymax":38.27078127,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null}}},{"type":"polygon","rings":[[[-85.6846231299999,38.2713677510001],[-85.6845992959999,38.2714397920001],[-85.6839764049999,38.2712263600001],[-85.6838380709999,38.271150817],[-85.6838034999999,38.27107606],[-85.6837734959999,38.2710120610001],[-85.6838018319999,38.2708592920001],[-85.6839231719999,38.270752412],[-85.6842104789999,38.2705878820001],[-85.6843239469999,38.27049586],[-85.6843768429999,38.2703630430001],[-85.6843789869999,38.2702842310001],[-85.6844271709999,38.27029308],[-85.6849534329999,38.2703877170001],[-85.6849395399999,38.2704283960001],[-85.6847229589999,38.271064772],[-85.6846231299999,38.2713677510001]]],"_ring":0,"spatialReference":{"wkid":4326,"preamble":null,"declaredClass":"esri.SpatialReference","wkt":null},"_extent":{"type":"extent","xmin":-85.6849534329999,"ymin":38.2702842310001,"xmax":-85.6837734959999,"ymax":38.2714397920001,"spatialReference":{"wk</A> <P> The following error was encountered: <UL> <LI> <STRONG> Invalid URL </STRONG> </UL>
<P> Some aspect of the requested URL is incorrect. Possible problems: <UL> <LI>Missing or incorrect access protocol (should be `http://'' or similar) <LI>Missing hostname <LI>Illegal double-escape in the URL-Path <LI>Illegal character in hostname; underscores are not allowed </UL>
I've noticed that the URL has been cut off at some point. Any ideas on what the problem may be? Thanks!
