private static void CallEcho()
        {
            Uri    baseAddr = new Uri("http://localhost:7000/DemoServices/SampleRoutingService");
            string message  = "Routing demo message";

            Console.WriteLine("Press [ENTER] to call SimpleEchoService");
            Console.ReadLine();

            using (ChannelFactory <IEchoService> factory = new ChannelFactory <IEchoService>(new BasicHttpBinding(),
                                                                                             new EndpointAddress(baseAddr)))
            {
                try
                {
                    IEchoService proxy = factory.CreateChannel();
                    Console.WriteLine($"Service response: {proxy.GetData(message)}");
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"Exception: {ex.Message}");
                }

                Console.WriteLine("Press [ENTER] to close client");
                Console.ReadLine();
            }
        }