static void Main(string[] args)
{
Console.WriteLine("Press enter to continue once service is hosted.");
Console.ReadLine();
DuplexServiceCallBack callback = new DuplexServiceCallBack();
InstanceContext instanceContext = new InstanceContext(callback);
DuplexServiceClient client = new DuplexServiceClient(instanceContext);
client.OpenSession();
Console.WriteLine("Press <ESC> to stop the client.");
Console.ReadLine();
}
