Question

我有一个长期采用基于WCF的流程。如果有任何帮助，WCF服务在Azure中运行。我相信这个问题与超时有关：

1）Winforms客户端在绑定部分中具有以下.config设置：

 <wsHttpBinding>
  <binding name="XXX" closeTimeout="00:05:00" openTimeout="00:05:00"
   receiveTimeout="00:10:00" sendTimeout="00:10:00" bypassProxyOnLocal="false"
   transactionFlow="false" hostNameComparisonMode="StrongWildcard"
   maxBufferPoolSize="10000000" maxReceivedMessageSize="10000000"
   messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
   allowCookies="false">
   <readerQuotas maxDepth="255" maxStringContentLength="8192" maxArrayLength="16384"
    maxBytesPerRead="4096" maxNameTableCharCount="16384" />
   <reliableSession ordered="true" inactivityTimeout="00:10:00"
    enabled="false" />
   <security mode="TransportWithMessageCredential">
    <transport clientCredentialType="None" proxyCredentialType="None" realm="" />
    <message clientCredentialType="UserName" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="false"/>
   </security>
  </binding>
 </wsHttpBinding>

2）WCF服务在web.config中有以下绑定部分

   <wsHttpBinding>
    <binding name="XXX" maxReceivedMessageSize="10000000" sendTimeout="00:10:00" receiveTimeout="00:10:00" closeTimeout="00:10:00" openTimeout="00:10:00">
     <security mode="TransportWithMessageCredential">
      <message clientCredentialType="UserName" establishSecurityContext="false" />
     </security>
     <readerQuotas maxArrayLength="2000000" maxBytesPerRead="10000000" maxStringContentLength="10000000" maxDepth="255" />
    </binding>

   </wsHttpBinding>

3）我在WCF中有一个长时间运行的方法（通常为2分钟）。客户端调用该方法，执行时间超过1分钟的客户端将被抛出异常。这是最内在的例外：

  <InnerException>
    <Type>System.Net.Sockets.SocketException</Type>
    <Message>An existing connection was forcibly closed by the remote host</Message>
    <StackTrace>
      <Frame>at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)</Frame>
    </StackTrace>
  </InnerException>
</InnerException>

4）然而，WCF调用本身已成功完成（我在服务器端都记录了开始/结束）。我该如何避免异常？

谢谢！

Answer 1

Windows Azure负载均衡器会在60秒后终止空闲连接。

Answer 2

查看Azure团队的最新帖子...... http://azure.microsoft.com/blog/2014/08/14/new-configurable-idle-timeout-for-azure-load-balancer/

Answer 3

更新回答：

Azure负载均衡器在4分钟后终止空闲连接。如果您对增加/减少超时值感兴趣，请查看以下文章：

https://azure.microsoft.com/en-us/blog/new-configurable-idle-timeout-for-azure-load-balancer/

WCF超时问题？

3 个答案: