调用WCF服务失败

Question

我有一个 WCF 服务托管在 IIS 5.1 上，并且禁用了匿名访问。下面是 web.config 文件的一部分，显示了如何配置该服务：

<system.serviceModel>
   <bindings>
      <basicHttpBinding>
         <binding name="basicHttpBindingCfg">
            <security mode="TransportCredentialOnly">
               <transport clientCredentialType="Windows" />
            </security>
         </binding>
      </basicHttpBinding>
   </bindings>
   <services>
      <service behaviorConfiguration="ServiceBehavior" name="HelloService">
         <endpoint name="BasicHttpEndpoint" 
             address="" 
             binding="basicHttpBinding" 
             bindingConfiguration="basicHttpBindingCfg"
             contract="IHelloService">
         </endpoint>
         <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      </service>
   </services>
   <behaviors>
      <serviceBehaviors>
         <behavior name="ServiceBehavior">
            <serviceMetadata httpGetEnabled="true"/>
            <serviceDebug includeExceptionDetailInFaults="false"/>
          </behavior>
      </serviceBehaviors>
   </behaviors>
</system.serviceModel>

每次我从桌面应用程序调用该服务公开的任何操作时，都会收到以下错误消息：

未提供所需的模拟级别，或者 假设模拟级别无效。

请注意，绑定类型和托管环境是由客户端预先确定的，无法更改。

任何可能导致解决此问题的帮助将不胜感激。

谢谢！

Zen

编辑：以下是客户端的配置方式：

<system.serviceModel>
   <bindings>
      <basicHttpBinding>
         <binding name="BasicHttpEndpoint" closeTimeout="00:01:00" openTimeout="00:01:00"
                receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
                bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                useDefaultWebProxy="true">
            <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                          maxBytesPerRead="4096" maxNameTableCharCount="16384" />
            <security mode="TransportCredentialOnly">
               <transport clientCredentialType="Windows" proxyCredentialType="None"
                        realm="" />
               <message clientCredentialType="UserName" algorithmSuite="Default" />
            </security>
         </binding>
      </basicHttpBinding>
   </bindings>
   <client>
      <endpoint name="BasicHttpEndpoint" 
          address="http://vm00000033871b.intra.pri/WCFServiceBasicHttp/HelloService.svc"
          binding="basicHttpBinding" 
          bindingConfiguration="BasicHttpEndpoint"
          contract="Proxy.IHelloService" />
   </client>
</system.serviceModel>

Answer 1

尝试传递当前用户的 Windows 凭据：

Using proxy As New PRX.HelloServiceClient()
    proxy.ClientCredentials.Windows.AllowedImpersonationLevel = 
                                       TokenImpersonationLevel.Impersonation
    proxy.ChannelFactory.Credentials.Windows.ClientCredential = 
                                       CredentialCache.DefaultNetworkCredentials
    Dim message As String = proxy.Hello("Hi")
    MessageBox.Show(message)
End Using