加载多个数据时 WCF 服务通道中的 CommunicationObjectAbortedException答案

【问题标题】：CommunicationObjectAbortedException in WCF service channel while multiple data load加载多个数据时 WCF 服务通道中的 CommunicationObjectAbortedException
【发布时间】：2011-09-30 06:50:18
【问题描述】：

我在客户端-服务器应用程序中使用 WCF 服务，在服务器和客户端之间进行通信时遇到以下错误。

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（仅接收事件并显示），它工作正常。但是当我们在客户端执行一些加载过程并忙碌了一段时间时，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，但问题仍未解决。

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;

请指导我是否需要与通信渠道或绑定相关的其他设置？

更新： svc 跟踪器引发的错误：

<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>

【问题讨论】：

检查服务是否抛出任何异常 - 未处理的异常将使通道出错；这可能不是一个绑定问题。
@Tim 说了什么；为此，请使用服务跟踪查看器 msdn.microsoft.com/en-us/library/ms732023.aspx
@JeremyMcGee ：我不太了解如何使用服务跟踪查看器。你能指导我吗？
@UpendraChaudhari - 检查 Jeremy 发布的链接。
确实如此。本质上，您需要调整配置以创建跟踪文件，然后使用跟踪查看器进行查看。我建议跟踪客户端/和/服务器。还值得记住的是，您也可以跟踪序列化问题：msdn.microsoft.com/en-us/library/dd788183(v=bts.70).aspx

标签： c# wcf nettcpbinding

【解决方案1】：

正如您在问题中提到的，您已将所有超时设置为最大值。所以根据我的观点，你定义的 InstanceContextMode 应该有问题。您在服务中定义了哪种模式？ PerSession、PerCall 或 Single。可能有您定义的 PerCall 并通过同一个对象（全局声明的服务对象）调用服务，然后可能通道进入故障状态或连接断开。

因此，如果您定义了 PerSession 模式，则使用来自客户端的单个对象（全局声明）从服务中获取数据。如果您定义了 PerCall 选项，则每次都创建新对象。

希望对您有所帮助。如有任何疑问，请随时提出...

【讨论】：

我有多个服务，一个叫做 HostService 的主要服务有 PerSession 模式，所有其他的都有 PerCall 模式。在主要服务中，我在静态哈希表中维护连接的客户端列表，因为我需要使用回调方法将事件推送到所有客户端。因此，我将所有连接客户端的 conext 对象存储在该列表中。在客户端，我每次都会创建新对象来调用服务。
您能否描述一下您如何向所有客户发送事件通知？我的意思是您可以为此发布一些代码。还有一件事是当您向客户端发送事件通知时，您会调用另一个具有 PerCall 模式的服务？
正如我之前告诉你的，我正在使用回调方法发送事件通知，是的，当我在客户端应用程序中更改工作模式（主管、设置、离线）时，我正在调用 EventLogService 来保存工作模式数据，因此它将作为来自服务器的通知显示给所有连接的客户端。
您能否通过将 PerSession 模式更改为该 EventLogService 并使用全局声明的对象在客户端调用服务来检查它。
是的，我已经通过执行 PerSession 和 globle 对象来检查它，它对我来说工作正常。我不知道什么是实际问题，但现在它对我来说工作正常。感谢您的支持。