Unhandled Exception: System.ServiceModel.CommunicationException: The sequence has been terminated by the remote endpoint. Due to a user abort the reliable session cannot continue. The reliable session was faulted.

Question

I'm running the ListBasedPublishSubscribe sample and the datasource throws this exception after making 2 Publish calls. It was working fine then it wasn't then it was now it isn't again. The exception is thrown within 1 second of the app starting.

I did make a change to the service so Subscribe takes a string. The client seems to connect fine without exception.

C:\Client Test>datasource.exe
Sending PublishPriceChange(Gold, 400.00D, -0.25D)
Sending PublishPriceChange(Silver, 7.00D, -0.20D)

Unhandled Exception: System.ServiceModel.CommunicationException: The sequence ha
s been terminated by the remote endpoint. Due to a user abort the reliable sessi
on cannot continue. The reliable session was faulted.

Server stack trace:
   at System.ServiceModel.Channels.TransmissionStrategy.WaitQueueAdder.Wait(Time
Span timeout)
   at System.ServiceModel.Channels.TransmissionStrategy.InternalAdd(Message mess
age, Boolean isLast, TimeSpan timeout, Object state, MessageAttemptInfo& attempt
Info)
   at System.ServiceModel.Channels.ReliableOutputConnection.InternalAddMessage(M
essage message, TimeSpan timeout, Object state, Boolean isLast)
   at System.ServiceModel.Channels.ReliableDuplexSessionChannel.OnSend(Message m
essage, TimeSpan timeout)
   at System.ServiceModel.Channels.DuplexChannel.Send(Message message, TimeSpan
timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean on
eway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan tim
eout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCall
Message methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage req
Msg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgDa
ta, Int32 type)
   at Microsoft.ServiceModel.Samples.ISampleContract.PublishPriceChange(String i
tem, Double price, Double change)
   at Microsoft.ServiceModel.Samples.SampleContractClient.PublishPriceChange(Str
ing item, Double price, Double change)
   at Microsoft.ServiceModel.Samples.Client.Main(String[] args)

I tried restarting the web site/service to see if that makes a difference but no luck.

Answer 1

Hi,

Have you resolved this issue? It is probably that the client didn't call unsubscribe method properly when it exit.

---

Leo Tang [MSFT]
MSDN Community Support | Feedback to us
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Answer 2

Yeah I since figured out that if any exception is thrown this is the error message.