C# 以编程方式配置WCF流媒体服务的错误响应（400）

这是我第一次尝试将流媒体用于WCF，而我正在与可怕的“远程服务器返回意外响应：（400）错误请求”响应作斗争

跟踪查看器表示这是System.ServiceModel.ProtocolException，消息为“从网络接收的XML有问题。有关详细信息，请参阅内部异常。”内部异常类型表示“无法读取消息体，因为它是空的。”

在其他条件不变的情况下，如果我在客户端切换到缓冲模式，我就能够调试到服务器代码中

出于某些原因，我必须以编程方式配置我的服务，如下所示：

    public IUniverseFileService OpenProxy(string serviceUrl)
    {
        Debug.Assert(!string.IsNullOrEmpty(serviceUrl));

        var binding = new BasicHttpBinding();
        binding.Name = "basicHttpStream";
        binding.MaxReceivedMessageSize = 1000000;
        binding.TransferMode = TransferMode.Streamed;

        var channelFactory = 
           new ChannelFactory<localhost.IUniverseFileService>(
              binding, 
              new EndpointAddress(serviceUrl));

        return channelFactory.CreateChannel();
    }

 <system.serviceModel>
    <!-- BEHAVIORS -->
    <behaviors>
      <serviceBehaviors>
        <behavior name="serviceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true" httpHelpPageEnabled="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <!-- SERVICES -->
    <services>
      <service behaviorConfiguration="serviceBehavior" name="Org.Acme.UniverseFileService">
        <endpoint address="" 
                  binding="basicHttpBinding" 
                  name="basicHttpStream" 
                  bindingConfiguration="httpLargeMessageStream"
                  contract="Org.Acme.RemoteCommand.Service.IUniverseFileService" /> 
        <endpoint address="mex" 
                  binding="mexHttpBinding" 
                  bindingConfiguration="" name="mexStream" 
                  contract="IMetadataExchange"/>
      </service>
    </services>
    <!-- BINDINGS -->
    <bindings>
      <basicHttpBinding>
        <binding name="httpLargeMessageStream" 
                 maxReceivedMessageSize="2147483647" 
                 maxBufferPoolSize="2147483647"
                 maxBufferSize="2147483647" 
                 transferMode="Streamed"/>
      </basicHttpBinding>
    </bindings>

binding.TransferMode = TransferMode.StreamedResponse;

public IUniverseFileService OpenProxy（字符串服务URL）
{
Assert（！string.IsNullOrEmpty（serviceUrl））；
var binding=新的BasicHttpBinding（）；
binding.Name=“basicHttpStream”；
binding.MaxReceivedMessageSize=1000000；
binding.TransferMode=TransferMode.Streamed；
var channelFactory=
新渠道工厂(
结合
新端点地址（serviceUrl））；
返回channelFactory.CreateChannel（）；
}

而服务器的配置如下所示：

    public IUniverseFileService OpenProxy(string serviceUrl)
    {
        Debug.Assert(!string.IsNullOrEmpty(serviceUrl));

        var binding = new BasicHttpBinding();
        binding.Name = "basicHttpStream";
        binding.MaxReceivedMessageSize = 1000000;
        binding.TransferMode = TransferMode.Streamed;

        var channelFactory = 
           new ChannelFactory<localhost.IUniverseFileService>(
              binding, 
              new EndpointAddress(serviceUrl));

        return channelFactory.CreateChannel();
    }

 <system.serviceModel>
    <!-- BEHAVIORS -->
    <behaviors>
      <serviceBehaviors>
        <behavior name="serviceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true" httpHelpPageEnabled="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <!-- SERVICES -->
    <services>
      <service behaviorConfiguration="serviceBehavior" name="Org.Acme.UniverseFileService">
        <endpoint address="" 
                  binding="basicHttpBinding" 
                  name="basicHttpStream" 
                  bindingConfiguration="httpLargeMessageStream"
                  contract="Org.Acme.RemoteCommand.Service.IUniverseFileService" /> 
        <endpoint address="mex" 
                  binding="mexHttpBinding" 
                  bindingConfiguration="" name="mexStream" 
                  contract="IMetadataExchange"/>
      </service>
    </services>
    <!-- BINDINGS -->
    <bindings>
      <basicHttpBinding>
        <binding name="httpLargeMessageStream" 
                 maxReceivedMessageSize="2147483647" 
                 maxBufferPoolSize="2147483647"
                 maxBufferSize="2147483647" 
                 transferMode="Streamed"/>
      </basicHttpBinding>
    </bindings>

binding.TransferMode = TransferMode.StreamedResponse;

我感谢你的帮助

---

Stefano

当我将传输模式从

Streamed

更改为

StreamedResponse

时，一切都开始工作，如下所示：

    public IUniverseFileService OpenProxy(string serviceUrl)
    {
        Debug.Assert(!string.IsNullOrEmpty(serviceUrl));

        var binding = new BasicHttpBinding();
        binding.Name = "basicHttpStream";
        binding.MaxReceivedMessageSize = 1000000;
        binding.TransferMode = TransferMode.Streamed;

        var channelFactory = 
           new ChannelFactory<localhost.IUniverseFileService>(
              binding, 
              new EndpointAddress(serviceUrl));

        return channelFactory.CreateChannel();
    }

 <system.serviceModel>
    <!-- BEHAVIORS -->
    <behaviors>
      <serviceBehaviors>
        <behavior name="serviceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true" httpHelpPageEnabled="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <!-- SERVICES -->
    <services>
      <service behaviorConfiguration="serviceBehavior" name="Org.Acme.UniverseFileService">
        <endpoint address="" 
                  binding="basicHttpBinding" 
                  name="basicHttpStream" 
                  bindingConfiguration="httpLargeMessageStream"
                  contract="Org.Acme.RemoteCommand.Service.IUniverseFileService" /> 
        <endpoint address="mex" 
                  binding="mexHttpBinding" 
                  bindingConfiguration="" name="mexStream" 
                  contract="IMetadataExchange"/>
      </service>
    </services>
    <!-- BINDINGS -->
    <bindings>
      <basicHttpBinding>
        <binding name="httpLargeMessageStream" 
                 maxReceivedMessageSize="2147483647" 
                 maxBufferPoolSize="2147483647"
                 maxBufferSize="2147483647" 
                 transferMode="Streamed"/>
      </basicHttpBinding>
    </bindings>

binding.TransferMode = TransferMode.StreamedResponse;

---

但我仍然不明白为什么这样做有效而流式处理无效，以及为什么我可以从服务器发送和接收文件流。

尝试在bining标记中添加messageEncoding=“Mtom”。

ASP.NET development server不支持流式处理模式。您需要将服务部署到IIS（或WCF服务应用程序）才能使用流模式

请在你的帖子里。我最初也有同样的问题。事实上，不管怎样，我所需要的只是回应。对我来说也很有效。只花了我7小时