WcfTestClient: The contract 'IMetadataExchange' error

sultan picture sultan · Jul 15, 2011 · Viewed 11.7k times · Source

I created WCF service application there are no errors until I run WcfTestClient. It requires IMetadataExchange to be configured.

How to configure IMetadataExchange or avoid of its usage?

Error:

--------------------------- Microsoft WCF Test Client
--------------------------- The contract 'IMetadataExchange' in client configuration does not match the name in service contract, or there is no valid method in this contract. To recover, please manually correct client configuration.

Or restore to default configuration.

Or check "Always regenerate config when launching services" in the Tools -> Options menu, then refresh the service.

App.config

<system.serviceModel>
    <services>
      <service name="WcfCrmService.PermitTypesService">
        <endpoint address="" binding="wsHttpBinding" contract="WcfCrmService.IPermitTypesService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="WcfCrmService.IPermitTypesService" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/WcfCrmService/Mex/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, 
          set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="True"/>
          <!-- 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 -->
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

PermitTypes

using System;
using System.Runtime.Serialization;

namespace WcfCrmService
{
    namespace TestService
    {
        [DataContract]
        public class PermitTypes
        {
            [DataMember]
            public Guid PermitTypesId;

            [DataMember]
            public String PermitName;

            [DataMember]
            public String PermitForm;

            [DataMember]
            public String PermitView;
        }
    }
}

IPermitTypesService

using System.Collections.Generic;
using System.ServiceModel;
using WcfCrmService.TestService;

namespace WcfCrmService
{
    [ServiceContract]
    public interface IPermitTypesService
    {
        [OperationContract]
        void SubmitPermitTypes(PermitTypes permit);

        [OperationContract]
        List<PermitTypes> GetPermitTypes();

        [OperationContract]
        void DeletePermitTypes(string id);
    }
}

PermitTypesService

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.ServiceModel;
using System.ServiceModel.Description;
using Microsoft.Crm.Sdk.SWSE;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using WcfCrmService.TestService;
namespace WcfCrmService
{
    [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
    public class PermitTypesService : IPermitTypesService
    {
        public void SubmitPermitTypes(PermitTypes permit)
        {
            // Create records
        }
        public List<PermitTypes> GetPermitTypes()
        {
            // return Results
        }
        public void DeletePermitTypes(string id)
        {
            // Remove items
        }
    }
}

Service XML

<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing" xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
  <s:Header>
    <a:Action s:mustUnderstand="1" u:Id="_2">http://tempuri.org/IPermitTypesService/GetPermitTypesResponse</a:Action>
    <a:RelatesTo u:Id="_3">urn:uuid:6f8c2229-da22-4ea1-b0df-e760bf51af6d</a:RelatesTo>
    <o:Security s:mustUnderstand="1" xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
      <u:Timestamp u:Id="uuid-090f17e6-f7a7-4e9c-8881-d19571706129-17">
        <u:Created>2011-07-15T10:35:14.132Z</u:Created>
        <u:Expires>2011-07-15T10:40:14.132Z</u:Expires>
      </u:Timestamp>
      <c:DerivedKeyToken u:Id="uuid-090f17e6-f7a7-4e9c-8881-d19571706129-7" xmlns:c="http://schemas.xmlsoap.org/ws/2005/02/sc">
        <o:SecurityTokenReference>
          <o:Reference URI="urn:uuid:1716f576-883e-475c-9b56-4accac413b66" ValueType="http://schemas.xmlsoap.org/ws/2005/02/sc/sct" />
        </o:SecurityTokenReference>
        <c:Offset>0</c:Offset>
        <c:Length>24</c:Length>
        <c:Nonce>GAplsFZPK8LsfnWQDwrTkQ==</c:Nonce>
      </c:DerivedKeyToken>
      <c:DerivedKeyToken u:Id="uuid-090f17e6-f7a7-4e9c-8881-d19571706129-8" xmlns:c="http://schemas.xmlsoap.org/ws/2005/02/sc">
        <o:SecurityTokenReference>
          <o:Reference URI="urn:uuid:1716f576-883e-475c-9b56-4accac413b66" ValueType="http://schemas.xmlsoap.org/ws/2005/02/sc/sct" />
        </o:SecurityTokenReference>
        <c:Nonce>xwL0WRp3kTTqjzEwwFnA3A==</c:Nonce>
      </c:DerivedKeyToken>
      <e:ReferenceList xmlns:e="http://www.w3.org/2001/04/xmlenc#">
        <e:DataReference URI="#_1" />
        <e:DataReference URI="#_4" />
      </e:ReferenceList>
      <e:EncryptedData Id="_4" Type="http://www.w3.org/2001/04/xmlenc#Element" xmlns:e="http://www.w3.org/2001/04/xmlenc#">
        <e:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes256-cbc" />
        <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
          <o:SecurityTokenReference>
            <o:Reference ValueType="http://schemas.xmlsoap.org/ws/2005/02/sc/dk" URI="#uuid-090f17e6-f7a7-4e9c-8881-d19571706129-8" />
          </o:SecurityTokenReference>
        </KeyInfo>
        <e:CipherData>
          <e:CipherValue>CIPHERDATAK</e:CipherValue>
        </e:CipherData>
      </e:EncryptedData>
    </o:Security>
  </s:Header>
  <s:Body u:Id="_0">
    <GetPermitTypesResponse xmlns="http://tempuri.org/">
      <GetPermitTypesResult xmlns:a="http://schemas.datacontract.org/2004/07/WcfCrmService.TestService" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
        <a:PermitTypes>
          <a:PermitForm>TESTPERMIT_FORM</a:PermitForm>
          <a:PermitName>TESTPERMIT_NAME</a:PermitName>
          <a:PermitTypesId>d81a9ccd-bbae-e011-9b4f-bcaec545c264</a:PermitTypesId>
          <a:PermitView>TESTPERMIT_VIEW</a:PermitView>
        </a:PermitTypes>
        <a:PermitTypes>
          <a:PermitForm>BcisCertificate</a:PermitForm>
          <a:PermitName>Сертификат соответствия БЦИС</a:PermitName>
          <a:PermitTypesId>167ac5ea-51a9-e011-9c96-bcaec545c264</a:PermitTypesId>
          <a:PermitView>BcisCertificateView</a:PermitView>
        </a:PermitTypes>
        <a:PermitTypes>
          <a:PermitForm>DLOReferenceForm</a:PermitForm>
          <a:PermitName>Справка ДЛО</a:PermitName>
          <a:PermitTypesId>16579d03-52a9-e011-9c96-bcaec545c264</a:PermitTypesId>
          <a:PermitView>DLOReferenceView</a:PermitView>
        </a:PermitTypes>
      </GetPermitTypesResult>
    </GetPermitTypesResponse>
  </s:Body>
</s:Envelope>

Sultan

Answer

marc_s picture marc_s · Jul 15, 2011

This here in your configuration is definitely wrong:

<endpoint address="mex" binding="mexHttpBinding" contract="WcfCrmService.IPermitTypesService" />

A MEX endpoint for metadata exchange must have the WCF built-in contract IMetadataExchange and not your own service contract.

Try using this:

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

Does this work now?? The WCF Test Client would use the MEX endpoint to learn about your service - if you had a wrong service contract in there, the Test Client certainly wouldn't work....

Update: your choice of a base address also is a bit strange:

<baseAddresses>
   <add baseAddress="http://localhost:8732/Design_Time_Addresses/WcfCrmService/Mex/" />
</baseAddresses>

This mean: your actual service is reachable at:

http://localhost:8732/Design_Time_Addresses/WcfCrmService/Mex/

while your MEX endpoint is reached at:

http://localhost:8732/Design_Time_Addresses/WcfCrmService/Mex/mex/

I would recommend using a better/more meaningful base address for the service and just add mex to the end of the MEX endpoint:

<baseAddresses>
   <add baseAddress="http://localhost:8732/Services/WcfCrmService/" />
</baseAddresses>