Timeout Exception in Windows Azure Service Bus Relay

When creating the WCF binding with the Azure service bus I get the connection timeout exception when try to open the ServiceHost.

Below is my code

 var sh = new ServiceHost(typeof(ProblemSolver));


sh.AddServiceEndpoint(typeof(IProblemSolver), new NetTcpRelayBinding(),
                ServiceBusEnvironment.CreateServiceUri("sb","myservicebusnamespace", "problemsolver")).
                Behaviors.Add(new TransportClientEndpointBehavior
                {
                    TokenProvider = TokenProvider.CreateSharedSecretTokenProvider("owner", "mykey")
                });

            sh.Open();

            Console.WriteLine("Press ENTER to close");
            Console.ReadLine();

            sh.Close();

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