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POHow to call simple WCF service using jQuery or simple js
 

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    <p>I have a very simple hello world WCF service as given below. When I call it via asp.net project by adding web service reference it works perfectly fine. But when I call it using jQuery or standard js ajax call (using <code>XMLHttpRequest</code>) it calls back the success function but returns null data.</p> <p>When I tried to access it via firefox browser using this address: <code>http://localhost:8282/Test/TestService.svc/HelloWorld</code></p> <p>It returned an error with code "a:ActionNotSupported" and error detail as</p> <blockquote> <p>The message with Action '' cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be because of either a contract mismatch (mismatched Actions between sender and receiver) or a binding/security mismatch between the sender and the receiver. Check that sender and receiver have the same contract and the same binding (including security requirements, e.g. Message, Transport, None).</p> </blockquote> <p>If I change binding to <code>wsHttpBinding</code> then it returns nothing even in Firefox.</p> <p>Here is the code:</p> <p>File "Test/ITestService.svc":</p> <pre><code>[ServiceContract(Namespace = "http://localhost:8282/")] public interface ITestService { [OperationContract] string HelloWorld(); } </code></pre> <p>File "Test/TestService.svc":</p> <pre><code>public class TestService : ITestService { public string HelloWorld() { return "This is echo from server. Hello World"; } } </code></pre> <p>File "web.config"</p> <pre><code>&lt;system.serviceModel&gt; &lt;services&gt; &lt;service name="radMLRPC.Test.TestService" behaviorConfiguration="radMLRPC.Test.TestServiceBehavior" &lt;endpoint address="HelloWorld" binding="webHttpBinding" contract="radMLRPC.Test.ITestService"&gt; &lt;identity&gt; &lt;dns value="localhost"/&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="radMLRPC.Test.TestServiceBehavior"&gt; &lt;serviceMetadata httpGetEnabled="true"/&gt; &lt;serviceDebug includeExceptionDetailInFaults="true"/&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; </code></pre>
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