/// <summary>
    /// your classe needs be implement DarkKnight.DKService
    /// </summary>
    class Example : DarkKnight.DKService
    {
        public Example()
        {
            // In the class constructor, you can call the setApplication method by passing the class itself, 
            // which means that the server will always fetch its class as a control controller for new connected, 
            // disconnected, and incoming packates from clients.
            setApplication(this);
        }
        
        /// <summary>
        /// This method is called automatic when the client connection is closed
        /// </summary>
        /// <param name="client">DarkKnight.Network.Client obj</param>
        public override void connectionClosed(Client client)
        {
            // you customize your code here
            // example
            // remove the client from your controller clients connecteds
            Console.WriteLine(client.Id + " with ip: "+client.IPAddress.toString()+" is desconnected of the server");            
        }

        /// <summary>
        /// This method is called automatic when a new client connected with the server
        /// </summary>
        /// <param name="client">DarkKnight.Network.Client obj</param>
        public override void connectionOpened(Client client)
        {
            // you customize your code here
            // example
            // add the Client object in your controller of clients connecteds
            Console.WriteLine(client.Id + " with ip: "+client.IPAddress.toString()+" is connected to the server");
        }

        /// <summary>
        /// This method is called automatic when a client send a new package to the server
        /// The Client object is client owner of package
        /// The Packet object is packet data received from client
        /// </summary>
        /// <param name="client">DarkKnight.Network.Client obj</param>
        /// <param name="packet">DarkKnight.Data.Packet obj</param>
        public override void ReceivedPacket(Client client, Packet packet)
        {
            // you customize your code here
            // example
            // validate the package received from the client is valid
            // and process and response the client
            // like
            if(packet.dataString == "CONNECTION")
            {
                client.SendFormatedString(new PacketFormat("Hello"), "World!");
                // PacketFormat is a classe from DarkKnight.Data namespace
            }
        }
    }