Question

I’m just learning wcf and currently got this far.

CS File:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;

namespace wcfLib
{            
    [ServiceContract]
    public interface IfaceService
    {
        [OperationContract]
        int wordLen(string word);
    }

    public class StockService : IfaceService
    {
        public int wordLen(string word)
        {
            return word.Length;
        }
    }
}

Yet when I’m trying to run it, it pops an error:

WCF service host cannot find any service metadata…

Any idea what it could be?

Config File:

<system.serviceModel>
   <services>
      <service behaviorConfiguration="wcfLib.Service1Behavior" name="wcfLib.Service1">
        <endpoint address="" binding="wsHttpBinding" contract="wcfLib.ser">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/wcfLib/Service1/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="wcfLib.Service1Behavior">
          <serviceMetadata httpGetEnabled="True"/>
          <serviceDebug includeExceptionDetailInFaults="False" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

Answer 1

You need to have the following in your config file:

1) a service behavior for metadata:

<behaviors>
  <serviceBehaviors>
     <behavior name="Metadata"> 
        <serviceMetadata httpGetEnabled="true" />
     </behavior>
  </serviceBehaviors>
</behaviors>

2) reference that service behavior in your service’s config

<service name="wcfLib.StockService" 
         behaviorConfiguration="Metadata">
     ....
</service>

*The name value in the service tags in the config file must have the same name as the physical class that is implementing the contract. Remember if the class name changes, make sure to change this value to match.

3) an endpoint for MEX (metadata exchange)

<service name="wcfLib.StockService" 
         behaviorConfiguration="Metadata">
     ....

    <endpoint name="mex"
              address="mex"
              binding="mexHttpBinding"
              contract="IMetadataExchange" />
</service>

With all this in place, things should be just fine! 🙂