wcf - 远程主机使用 WCF 强制关闭现有连接

Question

我们通过 netTcpBinding 使用可靠 session 进行了 wcf 发布/订阅设置，并且在一台机器上，发布服务和订阅服务都托管在控制台应用程序中，我们收到上述错误。这台机器在一个工作组中。我们部署机器的其他任何地方都在域中，并且工作正常。我对 wcf 的了解有些有限，这只是交给我，所以请耐心等待。有人对如何解决此错误有任何建议吗？

完整的异常(exception)如下:

System.ServiceModel.CommunicationException The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '10675199.02:48:05.4775807'.
at System.ServiceModel.Channels.SocketConnection.EndRead() at System.ServiceModel.Channels.DelegatingConnection.EndRead() at System.ServiceModel.Channels.TracingConnection.EndRead() at System.ServiceModel.Channels.ConnectionStream.ReadAsyncResult.HandleRead() at System.ServiceModel.Channels.ConnectionStream.ReadAsyncResult.OnAsyncReadComplete(Object state) at System.ServiceModel.Channels.TracingConnection.TracingConnectionState.ExecuteCallback() at System.ServiceModel.Channels.SocketConnection.FinishRead() at System.ServiceModel.Channels.SocketConnection.AsyncReadCallback(Boolean haveResult, Int32 error, Int32 bytesRead) at System.ServiceModel.Diagnostics.Utility.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped) at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP) Inner exception:
System.Net.Sockets.SocketException
An existing connection was forcibly closed by the remote host
at System.ServiceModel.Channels.SocketConnection.EndRead() at System.ServiceModel.Channels.DelegatingConnection.EndRead() at System.ServiceModel.Channels.TracingConnection.EndRead() at System.ServiceModel.Channels.ConnectionStream.ReadAsyncResult.HandleRead() at System.ServiceModel.Channels.ConnectionStream.ReadAsyncResult.OnAsyncReadComplete(Object state) at System.ServiceModel.Channels.TracingConnection.TracingConnectionState.ExecuteCallback() at System.ServiceModel.Channels.SocketConnection.FinishRead() at System.ServiceModel.Channels.SocketConnection.AsyncReadCallback(Boolean haveResult, Int32 error, Int32 bytesRead) at System.ServiceModel.Diagnostics.Utility.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped) at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)

我的绑定(bind)配置如下:

<netTcpBinding>
    <binding name="NetTcpBinding_ISubscriptionService"
             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="524288"
             maxBufferSize="65536"
             maxConnections="10"
             maxReceivedMessageSize="65536">
        <readerQuotas maxDepth="32"
                      maxStringContentLength="8192"
                      maxArrayLength="524288"
                      maxBytesPerRead="4096"
                      maxNameTableCharCount="16384" />
        <reliableSession ordered="true"
                         inactivityTimeout="00:10:00"
                         enabled="true"/>
        <security mode="Transport"
                  transport=""
                  clientCredentialType="Windows"
                  protectionLevel="EncryptAndSign"
                  message=""/>
    </binding>
</netTcpBinding>

端点是:

<endpoint address="net.tcp://localhost:8000/SubscriptionService"
          binding="netTcpBinding" 
          bindingConfiguration="NetTcpBinding_ISubscriptionService" 
          contract="SubscriptionService.ISubscriptionService" 
          name="NetTcpBinding_ISubscriptionService" />

Answer 1

好的，我发现了我的问题所在。

客户端应用程序连接到的服务的 mxConnection 为 10。我们还使用 SecureMessaging，listenBacklog 为 1。将 maxConnections 修改为 100，将 listBacklog 修改为 200，一切正常。