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POWCF InvalidOperationException: A binding instance has already been associated to listen URI
 

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    <p>I'm a beginner of WCF and I'm studying in Essential WCF.</p> <p>I encountered a problem when using ServiceContract NameSpace and Name. when I run the code, I catch a bellow InvalidOperationException. But I couldn't understand clearly.</p> <p><em>A binding instance has already been associated to listen URI 'http://localhost:8080/NamespaceChange01'. If two endpoints want to share the same ListenUri, they must also share the same binding object instance. The two conflicting endpoints were either specified in AddServiceEndpoint() calls, in a config file, or a combination of AddServiceEndpoint() and config.</em> </p> <p>Does anyone knows how to avide the InvalidOperationException ?</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; namespace NamespaceChange01 { [ServiceContract(Name = "MyServiceName", Namespace = "http://ServiceNamespace")] public interface IBurgerMaster { [return: MessageParameter(Name = "myOutput")] [OperationContract(Name = "OperationName", Action = "OperationAction", ReplyAction = "ReplyActionName")] double GetStockPrice(string ticker); } [ServiceBehavior(Namespace = "http://MyService")] public class BurgerMaster : IBurgerMaster { public double GetStockPrice(string ticker) { return 100.99; } } class Program { static void Main(string[] args) { ServiceHost host = new ServiceHost(typeof(BurgerMaster)); host.Open(); Console.ReadLine(); host.Close(); } } } </code></pre> <ul> <li><p>app.config</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;configuration&gt; &lt;system.serviceModel&gt; &lt;services&gt; &lt;service name="NamespaceChange01.BurgerMaster" behaviorConfiguration="mexServiceBehavior"&gt; &lt;host&gt; &lt;baseAddresses&gt; &lt;add baseAddress="http://localhost:8080/NamespaceChange01"/&gt; &lt;/baseAddresses&gt; &lt;/host&gt; &lt;endpoint name="basic" binding="basicHttpBinding" contract="NamespaceChange01.IBurgerMaster"/&gt; &lt;endpoint name="mex" binding="mexHttpBinding" contract="IMetadataExchange"/&gt; &lt;/service&gt; &lt;/services&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior name="mexServiceBehavior"&gt; &lt;serviceMetadata httpGetEnabled="true"/&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;/system.serviceModel&gt; &lt;/configuration&gt; </code></pre></li> </ul> <p>Thanks.</p>
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