【发布时间】:2015-01-20 11:23:15
【问题描述】:
我们有一个 WCF 服务,它在启动时通过 Net.Pipes 协议调用其他几个服务。该调用返回一个字符串列表,没有枚举或复杂对象。
有时,我们会收到以下异常。
System.ServiceModel.CommunicationException: There was an error reading from the pipe: The pipe has been ended. (109, 0x6d). ---> System.IO.IOException: The read operation failed, see inner exception. ---> System.ServiceModel.CommunicationException: There was an error reading from the pipe: The pipe has been ended. (109, 0x6d). ---> System.IO.PipeException: There was an error reading from the pipe: The pipe has been ended. (109, 0x6d).
at System.ServiceModel.Channels.PipeConnection.FinishSyncRead(Boolean traceExceptionsAsErrors)
at System.ServiceModel.Channels.PipeConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
--- End of inner exception stack trace ---
at System.ServiceModel.Channels.PipeConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
at System.ServiceModel.Channels.ConnectionStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.NegotiateStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.NegotiateStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
--- End of inner exception stack trace ---
at System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.NegotiateStream.Read(Byte[] buffer, Int32 offset, Int32 count)
at System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
--- End of inner exception stack trace ---
它不会每次都发生。我几乎找不到任何关于此错误的引用。
我想知道,为什么会发生这种情况以及如何预防。
【问题讨论】:
-
你是否使用 [KnownType] 属性来装饰你的数据合约?
标签: c# .net web-services wcf named-pipes