从 C# 调用 WCF 时如何增加 MaxReceivedMessageSize [重复]

Posted 2023-04-12

【中文标题】从 C# 调用 WCF 时如何增加 MaxReceivedMessageSize [重复]

【英文标题】：how to increase MaxReceivedMessageSize when calling a WCF from C# [duplicate]

【发布时间】：2012-12-17 12:45:54

【问题描述】：

可能重复：The maximum message size quota for incoming messages (65536) has been exceeded

我正在使用 WCF 进行文件上传和下载。上传成功，但是当我下载一个大文件时，我发现了这个错误

错误：传入邮件的最大邮件大小配额 (65536) 已超过。要增加配额，请使用 相应绑定元素上的 MaxReceivedMessageSize 属性。

我的 Service.config 文件有以下代码。

<system.web>
    <compilation debug="true" />
    <httpRuntime executionTimeout="4800" maxRequestLength="2147483647" />


  </system.web>
  <system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" maxBufferPoolSize="524288">
          <readerQuotas maxDepth="32" maxStringContentLength="2147483647" 
            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"  />
        </binding>
      </basicHttpBinding>
      <!--<webHttpBinding>
        <binding maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" />
      </webHttpBinding>-->
    </bindings>
    <services>
      <service name="WITSService.WITSService">
        <clear />
        <endpoint binding="basicHttpBinding" contract="WITSService.WITSService" />
      </service>
    </services>

    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483646"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="myEndPointBehavior">
          <dataContractSerializer maxItemsInObjectGraph="2147483646"/>
        </behavior>
      </endpointBehaviors>
    </behaviors>

    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

谁能帮我增加 MaxReceivedMessageSize

【参考方案1】：

更改 web.config 中的 customBinding 以使用更大的默认值。我选择了 2MB，因为它是一个合理的大小。当然，将其设置为 2GB（如您的代码所示）会起作用，但它确实会让您更容易受到攻击。选择一个大于您的最大请求但又不过大的尺寸。

检查这个：Using Large Message Requests in Silverlight with WCF

<system.serviceModel>
   <behaviors>
     <serviceBehaviors>
       <behavior name="TestLargeWCF.Web.MyServiceBehavior">
         <serviceMetadata httpGetEnabled="true"/>
         <serviceDebug includeExceptionDetailInFaults="false"/>
       </behavior>
     </serviceBehaviors>
   </behaviors>
   <bindings>
     <customBinding>
       <binding name="customBinding0">
         <binaryMessageEncoding />
         <!-- Start change -->
         <httpTransport maxReceivedMessageSize="2097152"
                        maxBufferSize="2097152"
                        maxBufferPoolSize="2097152"/>
         <!-- Stop change -->
       </binding>
     </customBinding>
   </bindings>
   <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
   <services>
     <service behaviorConfiguration="Web.MyServiceBehavior" name="TestLargeWCF.Web.MyService">
       <endpoint address=""
                binding="customBinding"
                bindingConfiguration="customBinding0"
                contract="TestLargeWCF.Web.MyService"/>
       <endpoint address="mex"
                binding="mexHttpBinding"
                contract="IMetadataExchange"/>
     </service>
   </services>
 </system.serviceModel> 

【参考方案2】：

您需要在客户端配置中设置basicHttpBinding -> MaxReceivedMessageSize。