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我有一个使用 NetTcpBinding 的 WCF 服务，我想将它托管在 WPF 应用程序中。该服务似乎可以正确启动，但是当我尝试在 Visual Studio 中使用“添加服务引用”获取它的元数据时，我得到了这个异常：

The URI prefix is not recognized.
Metadata contains a reference that cannot be resolved: 'net.tcp://localhost:8000/Mandrake/mex'.

我的服务项目的 App.config 文件：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

<appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
</appSettings>
<system.web>
  <compilation debug="true" />
</system.web>
<system.serviceModel>
  <services>
    <service name="Mandrake.Service.OTAwareService">
      <endpoint address="OTService" binding="netTcpBinding" contract="Mandrake.Service.IOTAwareService">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>
      <endpoint name="MEX" address="mex" binding="mexTcpBinding" contract="IMetadataExchange" />
      <host>
        <baseAddresses>
          <add baseAddress="net.tcp://localhost:8000/Mandrake/" />
        </baseAddresses>
      </host>
    </service>
  </services>
  <behaviors>
    <serviceBehaviors>
      <behavior>
        <serviceMetadata/>
        <serviceDebug includeExceptionDetailInFaults="False" />
      </behavior>
    </serviceBehaviors>
  </behaviors>
</system.serviceModel>

</configuration>

以及托管应用程序中的代码：

Uri baseAddress = new Uri("net.tcp://localhost:8000/Mandrake");
ServiceHost host = new ServiceHost(typeof(OTAwareService), baseAddress);

try
{
    host.AddServiceEndpoint(typeof(IOTAwareService), new NetTcpBinding(), "OTService");

}
catch (CommunicationException e)
{
    Console.WriteLine(e.Message);
    host.Abort();
}

我发现该问题的解决方案主要是将“serviceMetaData”添加到服务配置或提供 mex 端点。你能建议点什么吗？

编辑：

最终配置：

<system.serviceModel>
<behaviors>
  <serviceBehaviors>
    <behavior name="NewBehavior0">
      <serviceMetadata />
      <serviceDebug includeExceptionDetailInFaults="True" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<services>
  <service name="Mandrake.Service.OTAwareService" behaviorConfiguration="NewBehavior0">
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://localhost:8036/OTService"/>
      </baseAddresses>
    </host>

    <endpoint address="" binding="netTcpBinding" name="TcpEndpoint" contract="Mandrake.Service.IOTAwareService" />
    <endpoint address="mex" binding="mexTcpBinding" name="MetadataEndpoint" contract="IMetadataExchange" />

  </service>
</services>
</system.serviceModel>

托管应用程序：

host = new ServiceHost(typeof(OTAwareService));
host.Open();
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1 回答 1

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在启用 serviceDebug 的 includeExceptionDetailInFaults 之后，我已经设法弄清楚了。

Mandrake.Service.IOTCallback.Send operation references a message element [http://tempuri.org/:Send] that has already been exported from the Mandrake.Service.IOTAwareService.Send operation

所以在服务契约和回调​​接口中都有一个 Send(OTMessage) 操作。一个相当丑陋的错误，但我想我会把解决方案留在这里，以防它帮助任何人。

于 2014-05-01T21:53:32.327 回答