设置 WCF webhttp 的最大消息和缓冲区大小

Question

我目前有一个带有 webHttp 绑定的 WCF 服务，我试图通过覆盖配置中的默认设置来增加可以输入到服务的最大大小，我尝试过执行类似的操作

  <system.serviceModel>
<bindings>
<webHttpBinding>
  <binding name="webHttp" >
  <security mode="Transport">
      <transport clientCredentialType = 
             "None"
            proxyCredentialType="None"
            realm="string" />
  </security>
  </binding>

</webHttpBinding>
</bindings>
<services>

  <service name="PrimeStreamInfoServices.Service1" behaviorConfiguration="PrimeStreamInfoServices.Service1Behavior">
    <!-- Service Endpoints -->
    <endpoint address="" binding="webHttpBinding"  contract="PrimeStreamInfoServices.IService1">
      <!-- 
          Upon deployment, the following identity element should be removed or replaced to reflect the 
          identity under which the deployed service runs.  If removed, WCF will infer an appropriate identity 
          automatically.
      -->
    </endpoint>
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="PrimeStreamInfoServices.Service1Behavior">
      <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
      <serviceMetadata httpGetEnabled="true"/>
      <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
      <serviceDebug includeExceptionDetailInFaults="false"/>
    </behavior>
  </serviceBehaviors>
</behaviors>
<diagnostics>

并设置与消息大小相关的各种其他属性，但似乎没有一个为了正常工作，是否可以更改 webHttp 绑定的消息大小？ 有什么建议么？ 谢谢！

Answer 1

有多种设置可能会产生影响，具体取决于您的设置 - 试试这个：

<bindings>
  <webHttpBinding>
    <binding name="LargeWeb"
             maxBufferPoolSize="1500000"
             maxReceivedMessageSize="1500000"
             maxBufferSize="1500000">
      <readerQuotas 
            maxArrayLength="656000"
            maxBytesPerRead="656000"
            maxDepth="32"
            maxNameTableCharCount="656000"
            maxStringContentLength="656000"
            />
    </binding>
  </webHttpBinding>
</bindings>

通过定义 webHttpBinding 的“版本”并将所有这些参数设置为更高的值，您应该能够（几乎）通过任何消息大小。

请注意：这确实使您的系统有可能被大量消息淹没，从而陷入瘫痪（典型的拒绝服务攻击） - 这就是这些限制设置得相当低的原因 - 通过设计和目的。

您可以将它们更改为更高的值 - 只要注意您在做什么以及安全风险是什么（如果您这样做）！

Marc

PS：为了使用这些设置，您当然必须在服务器和客户端配置中引用该绑定配置：

<client>
  <endpoint address="http://localhost"
            binding="webHttpBinding" bindingConfiguration="LargeWeb"
            contract="IMyService" />
</client>
<services>
  <service>
    <endpoint address="http://localhost"
              binding="webHttpBinding" bindingConfiguration="LargeWeb"
              contract="IMyService" />
  </service>
</services>

Answer 2

如果您在模型中使用 [DataContract] 装饰器，则需要将 dataContractSerializer 添加到 web.config 中

示例：

  <serviceBehaviors>
    <behavior name="ServiceBehavior">
      <serviceMetadata httpsGetEnabled="false"   httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="true"/>
      <dataContractSerializer maxItemsInObjectGraph="2147483647" />
    </behavior>
  </serviceBehaviors>

Answer 3

设置 WCF Rest 服务 webhttpbinding 的最大消息和缓冲区大小

<bindings>
  <webHttpBinding>
    <binding maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647">
      <readerQuotas maxDepth="200" maxStringContentLength="83886089" maxArrayLength="163841" maxBytesPerRead="2147483647" maxNameTableCharCount="16384"/>
    </binding>
  </webHttpBinding>
</bindings>