at System.ServiceModel.Channels.PipeConnection.WriteHelper(Byte[] buffer, Int32 offset, Int32 size, Boolean immediate, TimeSpan timeout, Object& holder)
   at System.ServiceModel.Channels.PipeConnection.Write(Byte[] buffer, Int32 offset, Int32 size, Boolean immediate, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnection.WriteNow(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout, BufferManager bufferManager)
   at System.ServiceModel.Channels.BufferedConnection.WriteNow(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout)
   at System.ServiceModel.Channels.BufferedConnection.Write(Byte[] buffer, Int32 offset, Int32 size, Boolean immediate, TimeSpan timeout)
   at System.ServiceModel.Channels.FramingDuplexSessionChannel.CloseOutputSessionCore(TimeSpan timeout)
   at System.ServiceModel.Channels.TransportDuplexSessionChannel.CloseOutputSession(TimeSpan timeout)
   at System.ServiceModel.Channels.TransportDuplexSessionChannel.OnClose(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Close(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnClose(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Close(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Close()