error running the service bus sample at https://msdn.microsoft.com/en-us/library/azure/ee725236.aspx

I am getting the following error when I run the service bus (service) code at https://msdn.microsoft.com/en-us/library/azure/ee725236.aspx

using System.ServiceModel.Description;
using Microsoft.ServiceBus;
using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Threading.Tasks;

namespace ServiceBusSample
{
    [ServiceContract(Name = "IEchoContract", Namespace = "http://samples.microsoft.com/ServiceModel/Relay/")]
    public interface IEchoContract
    {
        [OperationContract]
        String Echo(string text);
    }

    public interface IEchoChannel : IEchoContract, IClientChannel { };

    [ServiceBehavior(Name = "EchoService", Namespace = "http://samples.microsoft.com/ServiceModel/Relay/")]
    class EchoService : IEchoContract
    {
        public string Echo(string text)
        {
            Console.WriteLine("Echoing: {0}", text);
            return text;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.AutoDetect;

            Console.Write("Your Service Namespace: ");
            string serviceNamespace = "azuremania";
            Console.Write("Your Issuer Name: ");
            string issuerName = "RootManageSharedAccessKey";
            Console.Write("Your Issuer Secret: ");
            string issuerSecret = "oJNsxjVs7V+i3mMM4w6JJWCGqah4SfGECy+3/4v8upQ=";

            // Create the credentials object for the endpoint.
            TransportClientEndpointBehavior sharedSecretServiceBusCredential = new TransportClientEndpointBehavior();
            sharedSecretServiceBusCredential.TokenProvider = TokenProvider.CreateSharedSecretTokenProvider(issuerName, issuerSecret);

            // Create the service URI based on the service namespace.
            Uri address = ServiceBusEnvironment.CreateServiceUri("sb", serviceNamespace, "EchoService");

            // Create the service host reading the configuration.
            ServiceHost host = new ServiceHost(typeof(ServiceBusSample.EchoService), address);

            // Create the ServiceRegistrySettings behavior for the endpoint.
            IEndpointBehavior serviceRegistrySettings = new ServiceRegistrySettings(DiscoveryType.Public);

            // Add the Service Bus credentials to all endpoints specified in configuration.
            foreach (ServiceEndpoint endpoint in host.Description.Endpoints)
            {
                endpoint.Behaviors.Add(serviceRegistrySettings);
                endpoint.Behaviors.Add(sharedSecretServiceBusCredential);
            }

            // Open the service.
            host.Open();

            Console.WriteLine("Service address: " + address);
            Console.WriteLine("Press [Enter] to exit");
            Console.ReadLine();

            // Close the service.
            host.Close();
        }
    }
}

The request has timed out after 00:00:00 milliseconds. The successful completion of the request cannot be determined. Additional queries should be made to determine whether or not the operation has succeeded.

Any thoughts ?