wcf - 传入消息的最大消息大小配额 (65536) ....要增加配额，请使用 MaxReceivedMessageSize 属性

Question

我遇到了这个我正在尝试处理的疯狂问题。我知道当我们获取大量数据时，我们必须增加客户端 .config 文件的配额，但是如果我的客户端正在向 WCF 服务器发送大量数据，我该怎么办？

当我发送小型输入参数时，它工作正常。不幸的是，当输入变大时，它就会崩溃。

调试器说:

Bad Request, 400;

在跟踪文件上是:

The maximum message size quota for incoming messages (65536) has been exceeded. To increase the quota, use the MaxReceivedMessageSize property on the appropriate binding element.

有没有办法增加服务器端传入数据的配额？如果是这样，如何？

这是我的示例配置相关部分:

<bindings>
  <basicHttpBinding>
    <binding name="MyBasicHttpBinding"
        closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00"
        sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false"
        hostNameComparisonMode="StrongWildcard" maxBufferSize="2147483647"
        maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
        messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
        useDefaultWebProxy="true">
      <readerQuotas maxDepth="64" maxStringContentLength="2147483647" maxArrayLength="2147483647"
          maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"  />
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None"
            realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />
      </security>
    </binding>

  </basicHttpBinding>
</bindings>

 <services>
  <service name="MyWcfService">
    <endpoint address="http://myservice..."
      binding="basicHttpBinding" bindingConfiguration="MyBasicHttpBinding"
      name="MyBasicHttpBinding" contract="IMyContract" />
  </service>
</services> 

这是我的客户端代码(我动态创建它):

        var binding = new BasicHttpBinding();
        binding.MaxBufferPoolSize = 2147483647;
        binding.MaxBufferSize = 2147483647;
        binding.MaxReceivedMessageSize = 2147483647;
        binding.ReaderQuotas.MaxStringContentLength = 2147483647;
        binding.ReaderQuotas.MaxArrayLength = 2147483647;
        binding.ReaderQuotas.MaxDepth = 2147483647;
        binding.ReaderQuotas.MaxBytesPerRead = 2147483647;


        var address = new EndpointAddress("http://mylocalservice.."); 

        ChannelFactory<IMyContract> factory = new ChannelFactory<IMyContract>(binding, address);

        foreach (OperationDescription op in factory.Endpoint.Contract.Operations)
        {
            DataContractSerializerOperationBehavior dataContractBehavior =
                        op.Behaviors.Find<DataContractSerializerOperationBehavior>()
                        as DataContractSerializerOperationBehavior;
            if (dataContractBehavior != null)
            {
                dataContractBehavior.MaxItemsInObjectGraph = 2147483646;
            }
        }
        public IMyContract MyClientObject = factory.CreateChannel();

Answer 1

您可以设置MaxReceivedMessageSize通过服务的配置文件在服务上设置属性。

设置客户端的MaxReceivedMessageSize只影响客户端收到的消息；它对服务接收到的消息没有影响。相应的，要让服务接收大消息，需要设置服务的配置文件。

示例服务配置

<system.serviceModel>
  <bindings>
    <wsHttpBinding>
      <binding name="MyBinding" maxReceivedMessageSize="2147483647" />
    </wsHttpBinding>
  </bindings>
  <services>
    <service name="MyService">
      <endpoint address="http://myservice" binding="wsHttpBinding"
                bindingConfiguration="MyBinding" contract="IMyServiceContract" />
    </service>
  </services>
</system.serviceModel>

以上是一个非常精简的配置文件，但显示了相关部分。重要的部分是您定义绑定(bind)并为其命名，并显式设置与默认值不同的任何值，并在端点元素的 bindingConfiguration 属性中使用该名称。