[ServiceContract]
    public interface IService
    {
        [OperationContract]
        string GetName();
 
        [OperationContract]
        string GetIP();
 
    }
 
[ServiceContract]
    public interface IAuthService : IService
    {
        [OperationContract]
        string OpenSession(string login, string pass);
 
        [OperationContract]
        int CloseSession(string ssid);
 
        [OperationContract]
        List<ServiceItem> GetServices(string ssid);
 
    }
 
 
// класс реализации сервиса
class AuthService :  IAuthService, IServiceRegistration
    {
        public AuthService()
        {
            _name = "AuthService";
        }
 
        public string OpenSession(string login, string pass)
        {
            //todo : fill it
            return "NEW_SSID";
        }
        
        private bool _isRegistered;
        public bool isRegistered
        {
            get
            {
                return _isRegistered;
            }
        }
 
        public int CloseSession(string ssid)
        {
            return default(int);
        }
 
        public string GetIP()
        {
            // todo: fill it
            return "IP AuthService ";
        }
 
        private string _name;
        public string name
        {
            get
            {
                return _name;
            }
        }
 
        public string GetName()
        {
            return "_name";// _name;
        }
 
        public List<ServiceItem> GetServices(string ssid)
        {
            // todo: fill it
            return new List<ServiceItem>();
        }
 
        // ******************************************************************************************************
 
        private List<ServiceItem> services;
 
        public bool RegisterService(ServiceItem item)
        {
            // todo: fill it
            return true;
        }
 
        public bool UnRegisterService(ServiceItem item)
        {
            // todo: fill it
            return true;
        }
 
        public bool CheckSSID(string ssid)
        {
            // todo: fill it
            return true;
        }
 
    }
 
// клиент вызывающий службу
class Program
    {
        static void Main(string[] args)
        {
            string connect_string = @"http://192.168.0.4:5070/AuthService";
 
            Console.WriteLine("Start connection to AuthService ...");
 
            Uri tcpUri = new Uri(connect_string);
            EndpointAddress address = new EndpointAddress(tcpUri);
            BasicHttpBinding binding = new BasicHttpBinding();
            ChannelFactory<IAuthService> factory = new ChannelFactory<IAuthService>(binding, address);
            IAuthService auth_service = factory.CreateChannel();
 
            Console.WriteLine("AuthService is connected");
 
            string user = "user1";
            string pass = "pass1";
 
            // ***************************************************************
            string ssid = auth_service.OpenSession(user, pass);
            Console.WriteLine("ssid = " + ssid);
            string sss = auth_service.GetName();
            Console.WriteLine(sss);
 
            // ***************************************************************
 
            Console.WriteLine("Press 'Enter' if you want to stop connection to AuthService.");
            Console.ReadLine();
            factory.Close();
 
        }
    }