wcf - 在 WCF 服务中传输大量数据

Question

我在 WCF 中创建了一个 Web 服务，它返回超过 54000 个数据行，每行有 10 个数据。我用过 wsHttpBinding 用于交流。该服务适用于较少的数据(即 2000 行)，但在尝试发送具有 50000+ 行(~2MB)的大型记录集时它会崩溃。异常信息是这样的

An error occurred while receiving the HTTP response to http://localhost:9002/MyService.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.

请不要告诉我在客户端使用分页 - 我知道它会解决问题。但我需要客户端中的全部数据。

我在服务器上的服务配置为

<system.serviceModel>
  <bindings>
    <wsHttpBinding>
      <binding name="MyWsHttpBinding" />
    </wsHttpBinding>
  </bindings>
  <services>
    <service name="AdminService">
      <endpoint address="AdminSrv"
                binding="wsHttpBinding"
                contract="IAdminService"/>
      <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      <host>
        <baseAddresses>
          <add baseAddress="/Bus/IRfotoWCF" />
        </baseAddresses>
      </host>
    </service>
  </services>
  <behaviors>
    <serviceBehaviors>
      <behavior>
        <!-- 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="True" />
      </behavior>
    </serviceBehaviors>
  </behaviors>
  <serviceHostingEnvironment multipleSiteBindingsEnabled="true"></serviceHostingEnvironment>
</system.serviceModel>

我的客户端配置如下

<system.serviceModel>
  <bindings>
    <basicHttpBinding>
      <binding name="BasicHttpBinding_IAdminService" closeTimeout="00:01:00"
               openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
               allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
               maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
               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://localhost/TestService/AdminService.svc" 
              binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IAdminService"
              contract="IAdminService" name="BasicHttpBinding_IAdminService" />
  </client>
</system.serviceModel>

有人会帮助我在客户端和服务器端进行精确配置。即使我需要从 更改绑定(bind)wsHttpBinding 至 netTcpBinding - 我这样做没有问题。提前致谢。

Answer 1

经过大量调查，我终于找到了解决方案。实际上有很多事情需要改变。

需要在 中进行以下更改服务器端 .

第一我必须在我的 httpRuntime 元素中将 maxRequestLength 设置为更大的值才能运行更长的时间请求。

<system.web>    
<httpRuntime maxRequestLength="102400" />
</system.web>

第二我介绍了 netTcpBinding 在 maxBufferSize, maxBufferPoolSize, maxReceivedMessageSize 上使用自定义更改进行绑定(bind) 2147483647 的大值.

<binding name="myNetTcpBinding" 
maxBufferPoolSize="2147483647" 
maxBufferSize="524288" 
maxReceivedMessageSize="2147483647">

第三添加 maxItemsInObjectGraph在这两个 serviceBehaviors和 endpointBehaviors如下所示(不要忘记提及 service 和 endpoint 节点中的行为名称)

    <behaviors>
      <serviceBehaviors>        
        <behavior name="myNetTcpBehaviour">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="myNetTcpEndPointBehaviour">
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </endpointBehaviors>
    </behaviors>

最后我的服务器配置如下所示

<system.web>    
    <httpRuntime maxRequestLength="102400" />
</system.web>


  <system.serviceModel>
    <bindings>
      <wsHttpBinding>
        <binding name="MyWsHttpBinding" />
      </wsHttpBinding>
      <netTcpBinding>
        <binding name="myNetTcpBinding"
                 closeTimeout="00:01:00"
                 openTimeout="00:01:00"
                 receiveTimeout="00:10:00"
                 sendTimeout="00:01:00"
                 transactionFlow="false"
                 transferMode="Buffered"
                 transactionProtocol="OleTransactions"
                 hostNameComparisonMode="StrongWildcard"
                 listenBacklog="10"
                 maxBufferPoolSize="2147483647"
                 maxBufferSize="524288"
                 maxConnections="10"
                 maxReceivedMessageSize="2147483647">
          <readerQuotas maxDepth="32"
                        maxStringContentLength="8192"
                        maxArrayLength="16384"
                        maxBytesPerRead="4096"
                        maxNameTableCharCount="16384" />
          <reliableSession ordered="true"
                           inactivityTimeout="00:10:00"
                           enabled="false" />
          <security mode="Transport">
            <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>
    <services>
      <service name="AdminService" behaviorConfiguration="myNetTcpBehaviour">
        <endpoint address="AdminSrv" 
                  binding="netTcpBinding" 
                  bindingConfiguration="myNetTcpBinding"
                  contract="IAdminService"
                  behaviorConfiguration="myNetTcpEndPointBehaviour"/>

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="/Bus/IRfotoWCF" />
          </baseAddresses>
        </host>
      </service>
    <behaviors>
      <serviceBehaviors>        
        <behavior name="myNetTcpBehaviour">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="myNetTcpEndPointBehaviour">
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true"></serviceHostingEnvironment>
  </system.serviceModel>

现在在 客户端配置你需要更改 maxBufferSize="2147483647" maxBufferPoolSize="524288" maxReceivedMessageSize="2147483647"
和 您还需要添加 maxItemsInObjectGraph="2147483647"在端点行为配置中。

        <endpointBehaviors>
            <behavior name="myEndPointBehavior">
                <dataContractSerializer maxItemsInObjectGraph="2147483647" />
            </behavior>
        </endpointBehaviors>

现在我可以传输 30000 内的行5.30 分钟 其中查询执行了 10 秒，因此传输时间为 5.20 分钟 - 还是很多 .

随时发表评论和任何改进建议。