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POWCF Web Service returns "Bad Request" error when invoked through Javascript
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  1. POWCF Web Service returns "Bad Request" error when invoked through Javascript
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    copied!<p>I am trying to make an ajax GET request to a WCF web service method through javascript. The request returns with a 400 "Bad Request" error everytime. But if I invoke the same web service method through the WCF Test Client, it returns the correct results. </p> <p>Also, the ajax call through javascript returns the bad request error on both GET and POST requests.</p> <p>I have added the [WebGet] attribute to my web service method but the error still persists. </p> <p>Here is my javascript method and ajax call:</p> <pre><code>function Getdata() { var methodUrl = serverUrl + "/GetData"; $.ajax({ async: false, type: "GET", contentType: "application/json; charset=utf-8", dataType: "json", url: methodUrl, beforeSend: function (XMLHttpRequest) { //ensures the results will be returned as JSON. XMLHttpRequest.setRequestHeader("Accept", "application/json"); }, success: function (data) { }, error: function (XmlHttpRequest, textStatus, errorThrown) { alert("ERROR: GetData() Check your browsers javascript console for more details." + " \n XmlHttpRequest: " + XmlHttpRequest + " \n textStatus: " + textStatus + " \n errorThrown: " + errorThrown); } }); } </code></pre> <p>Here, serverUrl is of the format: "http://hostname:portnumber/webServiceProxy.svc"</p> <p>Any idea why the request would return a "Bad Request" error when invoked through javascript and work perfectly when invoked through the WCF Test Client? Any inputs will be appreciated! Thank you!</p> <p>Also, I have compared the requests sent out from the WCF Test Client and from my AJAX request using Fiddler and here is what I see:</p> <p>WCF Test Client Request:</p> <pre><code>POST http://hostname:portnumber/WebServiceProxy.svc HTTP/1.1 Content-Type: text/xml; charset=utf-8 SOAPAction: "http://tempuri.org/IWebServiceProxy/GetData" Host: hostname:portnumber Content-Length: 144 Expect: 100-continue Accept-Encoding: gzip, deflate &lt;s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"&gt;&lt;s:Body&gt;&lt;GetData xmlns="http://tempuri.org/"/&gt;&lt;/s:Body&gt;&lt;/s:Envelope&gt; </code></pre> <p>My AJAX Request:</p> <pre><code>GET http://hostname:portnumber/WebServiceProxy.svc/GetData HTTP/1.1 Content-Type: application/json; charset=utf-8 Accept-Language: en-us Referer: http://hostname/OrgName/WebResources/resourceName?pagemode=iframe Accept: application/json Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; InfoPath.3; .NET4.0E; BOIE9;ENUS) </code></pre> <p>Host: hostname:portnumber Connection: Keep-Alive</p> <p>So the biggest difference that I see is that the WCF Test Client makes a POST request and sends the web service method name in a SOAP envelope while my ajax request is a GET and adds the web service method name to the url. Looking at these requests, any ideas on how I might have to change my ajax call to get it to work correctly? Thanks!</p> <p>Editing to add my web.config file contents:</p> <pre><code>&lt;?xml version="1.0"?&gt; </code></pre> <p></p> <pre><code>&lt;system.web&gt; &lt;compilation debug="true" targetFramework="4.0" /&gt; &lt;customErrors mode="Off" /&gt; &lt;/system.web&gt; &lt;system.serviceModel&gt; &lt;bindings&gt; &lt;wsHttpBinding&gt; &lt;binding name="WSHttpBinding_IDDSWCFService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"&gt; &lt;readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /&gt; &lt;reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /&gt; &lt;security mode="Message"&gt; &lt;transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /&gt; &lt;message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/wsHttpBinding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;endpoint address="http://machinename:8080/DDSWCFService" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IDDSWCFService" contract="WCFService.IDDSWCFService" name="WSHttpBinding_IDDSWCFService"&gt; &lt;identity&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;/client&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior&gt; &lt;!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --&gt; &lt;serviceMetadata httpGetEnabled="true"/&gt; &lt;!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --&gt; &lt;serviceDebug includeExceptionDetailInFaults="true"/&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;endpointBehaviors&gt; &lt;behavior name="webHttpBehavior"&gt; &lt;enableWebScript/&gt; &lt;webHttp helpEnabled="true"/&gt; &lt;/behavior&gt; &lt;/endpointBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; </code></pre> <p></p>
 

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