WCF服务通道中的CommunicationObjectAbortedException,同时加载多个数据

Question

我在我的客户端 - 服务器应用程序中使用WCF服务,我在服务器和客户端之间的通信时遇到跟随错误.

Error Message =>> System.ServiceModel.CommunicationObjectAbortedException: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it has been Aborted.

Server stack trace: 
   at System.ServiceModel.Channels.CommunicationObject.ThrowIfDisposedOrNotOpen()
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at ServiceLib.ServiceCallbackInterfaces.IHostServiceCallback.SendEventAndStatus(String message, Boolean isBackupGenerated)
   at ServiceLib.Services.DriversService.objDriver_EventReceived(Object sender, EventReceivedEventArgs e)

应用场景:客户端通过WCF服务从服务器获取数据并使用nettcp绑定.服务器与真实设备连接,每秒生成20-30个事件.使用WCF的回调接口将生成的事件作为字符串消息推送到所有连接的客户端.如果客户端没有任何进程负载(只接收事件和显示),它工作正常.但是当我们在客户端进行一些加载过程并且忙碌一段时间时,它会出错.

注意:我已经在nettcp绑定中设置了最大所有超时,如下所示,但仍然没有解决问题.

NetTcpBinding tcpBinding = new NetTcpBinding(SecurityMode.None);
                tcpBinding.MaxBufferPoolSize = 2147483647;
                tcpBinding.MaxReceivedMessageSize = 2147483647;
                tcpBinding.MaxBufferSize = 2147483647;
                tcpBinding.ReaderQuotas.MaxStringContentLength = 2147483647;
                tcpBinding.ReaderQuotas.MaxDepth = 2147483647;
                tcpBinding.ReaderQuotas.MaxBytesPerRead = 2147483647;
                tcpBinding.ReaderQuotas.MaxNameTableCharCount = 2147483647;
                tcpBinding.ReaderQuotas.MaxArrayLength = 2147483647;
                tcpBinding.SendTimeout = TimeSpan.MaxValue;
                tcpBinding.ReceiveTimeout = TimeSpan.MaxValue;
                tcpBinding.ReliableSession.InactivityTimeout = TimeSpan.MaxValue;

请指导我是否还需要与通信渠道或绑定相关的其他设置？

更新: svc tracer抛出的错误:

<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent">
<System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system">
<EventID>131075</EventID>
<Type>3</Type>
<SubType Name="Error">0</SubType>
<Level>2</Level>
<TimeCreated SystemTime="2011-09-30T08:37:01.5691715Z" />
<Source Name="System.ServiceModel" />
<Correlation ActivityID="{00000000-0000-0000-0000-000000000000}" />
<Execution ProcessName="ServerUtility" ProcessID="2396" ThreadID="5" />
<Channel />
<Computer>TEST</Computer>
</System>
<ApplicationData>
<TraceData>
<DataItem>
<TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Error">
<TraceIdentifier>http://msdn.microsoft.com/it-IT/library/System.ServiceModel.Diagnostics.ThrowingException.aspx</TraceIdentifier>
<Description>Throwing an exception.</Description>
<AppDomain>ServerUtility.exe</AppDomain>
<Exception>
<ExceptionType>System.ServiceModel.CommunicationException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>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'.</Message>
<StackTrace>
at System.ServiceModel.Channels.SocketConnection.EndRead()
at System.ServiceModel.Channels.DelegatingConnection.EndRead()
at System.ServiceModel.Channels.SessionConnectionReader.OnAsyncReadComplete(Object state)
at System.ServiceModel.Channels.SocketConnection.FinishRead()
at System.ServiceModel.Channels.SocketConnection.AsyncReadCallback(Boolean haveResult, Int32 error, Int32 bytesRead)
at System.ServiceModel.Channels.OverlappedContext.CompleteCallback(UInt32 error, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Runtime.Fx.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
</StackTrace>
<ExceptionString>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'. ---&gt; System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
   --- End of inner exception stack trace ---</ExceptionString>
<InnerException>
<ExceptionType>System.Net.Sockets.SocketException, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType>
<Message>An existing connection was forcibly closed by the remote host</Message>
<StackTrace>
at System.ServiceModel.Channels.SocketConnection.EndRead()
at System.ServiceModel.Channels.DelegatingConnection.EndRead()
at System.ServiceModel.Channels.SessionConnectionReader.OnAsyncReadComplete(Object state)
at System.ServiceModel.Channels.SocketConnection.FinishRead()
at System.ServiceModel.Channels.SocketConnection.AsyncReadCallback(Boolean haveResult, Int32 error, Int32 bytesRead)
at System.ServiceModel.Channels.OverlappedContext.CompleteCallback(UInt32 error, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Runtime.Fx.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
</StackTrace>
<ExceptionString>System.Net.Sockets.SocketException (0x80004005): An existing connection was forcibly closed by the remote host</ExceptionString>
<NativeErrorCode>2746</NativeErrorCode>
</InnerException>
</Exception>
</TraceRecord>
</DataItem>
</TraceData>
<System.Diagnostics xmlns="http://schemas.microsoft.com/2004/08/System.Diagnostics">
<LogicalOperationStack></LogicalOperationStack>
<Timestamp>4730654290080</Timestamp>
</System.Diagnostics>
</ApplicationData>
</E2ETraceEvent>

Answer 1

正如您在问题中提到的，您已将所有超时设置为最大值。所以根据我的意见，您定义的 InstanceContextMode 应该有问题。您在服务中定义了哪种模式？每个会话、每个调用或单个。可能存在您定义的 PerCall 并通过同一对象（全局声明的服务对象）调用服务，那么通道可能会处于故障状态或连接断开。

因此，如果您定义了 PerSession 模式，则从客户端使用单个对象（全局声明）从服务获取数据。如果您定义了 PerCall 选项，则每次都会创建新对象。

希望这对您有帮助。有任何疑问请随时询问...