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POError 500 when calling asmx service from javascript
 

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  1. POError 500 when calling asmx service from javascript
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    <p>I am calling a .net 2.0 asmx service using javascript and servicereference. When I call the service in the test environment and locally, everything works fine. In production I get an error 500. I don't see any errors in the event log or displayed anywhere.</p> <p>If I hit the web service directly then I receive the json formatted data. If I call the web service from javascript using the servicereference then I get the error 500. </p> <p>I think this might be related to a size limitation since I can reduce the number of datapoints and the data is returned through javascript correctly.</p> <p>I have tried increasing the maxRequestLength in httpRuntime but that doesn't have any affect. Is there some setting that I am missing?</p> <p>If you view this page: <a href="http://bit.ly/NXBFpD" rel="nofollow">http://bit.ly/NXBFpD</a> you will see that data is returned without an error.</p> <p>If you view this page and watch the calls being made in firebug you'll see that the same page as above is called, but an error 500 is returned. <a href="http://bit.ly/NXBPO1" rel="nofollow">http://bit.ly/NXBPO1</a></p> <p>This is the code-behind on the page being called:</p> <pre><code>protected void Page_Load(object sender, EventArgs e) { if(!IsPostBack) { ScriptManager.GetCurrent(Page).Services.Add(new ServiceReference("/Services/FusionService.asmx")); } } } </code></pre> <p>This is the js code calling the service:</p> <pre><code>function GetGeometries(sw, ne, metro) { FusionService.GetGeometries(sw.lat(), sw.lng(), ne.lat(), ne.lng(), metro, drawMap); } </code></pre> <p>This is the service:</p> <pre><code>[WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.Web.Script.Services.ScriptService] public class FusionService : System.Web.Services.WebService { private string url = "https://www.googleapis.com/fusiontables/v1/query"; [WebMethod] [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)] public string GetGeometries(decimal southWestLat, decimal southWestLng, decimal northEastLat, decimal northEastLng, string metro) { try { var jss = new JavaScriptSerializer(); string key = string.Format("Geometry-{0}", metro); var geometryData = HttpContext.Current.Cache[key] as string; if (!string.IsNullOrEmpty(geometryData)) { var deserialized = jss.Deserialize&lt;GeometryData&gt;(geometryData); return jss.Serialize(deserialized); } var query = "SELECT name, geometry, FranchiseI, latitude, longitude, STATE FROM " + "1JNOz_lhP1B8oCzeNLBm8u5k6ezdRDKtM-NBD8 where ST_INTERSECTS(geometry, RECTANGLE(LATLNG(" + southWestLat + "," + southWestLng + "), LATLNG(" + northEastLat + "," + northEastLng + ")))"; var requestString = url + "?sql=" + HttpUtility.UrlEncode(query) + "&amp;key=AIzaSyCXLd2VlvZ0FNLbgMKsfSq7Uvp3IDwa"; var request = WebRequest.Create(requestString) as HttpWebRequest; using (var response = request.GetResponse() as HttpWebResponse) { var reader = new StreamReader(response.GetResponseStream()); var json = reader.ReadToEnd(); json = json.Replace("NaN", "\"\""); HttpContext.Current.Cache[key] = json; var deserialized = jss.Deserialize&lt;GeometryData&gt;(json); return jss.Serialize(deserialized); } } catch(Exception ex) { return ex.Message; } } </code></pre> <p>}</p>
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    1. PO
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    1. This table or related slice is empty.
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    1. USdoclove
    1. USdoclove
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    1. This table or related slice is empty.
    1. COYou're going to have to check your server logs to figure out what's going wrong. A 500 error means that the server side code failed, and without seeing what the code is nobody is going to be able to figure out your problem.
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      1. POError 500 when calling asmx service from javascript
      1. USPointy
    2. COI checked the server logs and there are no error messages. I updated my post with the relevant code and some example urls.
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      1. POError 500 when calling asmx service from javascript
      1. USdoclove
 

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