WCF：(400) Bad Request

报错信息:远程服务器返回了意外响应: (400) Bad Request。

经过几次调试，发现小数据量不会出现此错误，如何传输大数据量呢，经过网上搜索和几次测试发现，只要在服务端和客户端同时增大以下几个配置项。

服务器端：

 

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding maxBufferPoolSize="5242880000" maxBufferSize="655360000" maxReceivedMessageSize="655360000">
          <security mode="None"/>
        </binding>
      </basicHttpBinding>
    </bindings>
    <services>
      <service name="test">
        <endpoint binding="basicHttpBinding" name="test" contract="Test_Service.Test"/>
      </service>
    </services>

    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false 并删除上面的元数据终结点 -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息 -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

同样在客户端也需要增大与服务器端相同的配置：

 

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHttpBinding_ITest" closeTimeout="00:01:00"
                openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                maxBufferSize="655360000" maxBufferPoolSize="5242880000" maxReceivedMessageSize="655360000"
                messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                useDefaultWebProxy="true">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
            maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <security mode="None">
            <transport clientCredentialType="None" proxyCredentialType="None"
              realm="" />
            <message clientCredentialType="UserName" algorithmSuite="Default" />
          </security>
        </binding>
      </basicHttpBinding>
    </bindings>
    <client>
      <endpoint address="http://www.test.com/Test.svc"
        binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ITest"
        contract="TestService.ITest" name="BasicHttpBinding_ITest" />
    </client>
  </system.serviceModel>