private static void TcpServerRole()
{
    // start a TCP listener
    ServerListener = new TcpListener(GamePort);
    ServerListener.Start();

    //declare some variables
    Socket ss ; //server socket
    NetworkStream ns ;
    StreamReader sr;
    StreamWriter sw;
    string IncomingMessage ;

    while (true)
    {
        // wait for incoming messages
        ss = ServerListener.AcceptSocket(); 

        // create network, reader and writer streams
        ns = new NetworkStream(ss);
        sr = new StreamReader(ns);
        sw = new StreamWriter (ns);

        IPAddress ip; 
        // read the incoming message
        IncomingMessage = sr.ReadLine();

        // ((Type 1))
        // request for total number of connected players
        if (IncomingMessage=="NumberOfPlayers?") 
        {    
            // reply with the number of players
            sw.WriteLine(Game.ConnectedPlayers.Count.ToString());
            sw.Flush(); 
        }

        // ((Type 2))
        // request for all connected players
        if (IncomingMessage=="Players?") 
        {    
            // loop over all connectd players
            for ( int i=0 ; i < Game.ConnectedPlayers.Count ; i++)
            {    
                // send the player object
                sw.WriteLine(Game.ConnectedPlayers[i].ToString());
                sw.Flush();
                // send the player IP Address
                sw.WriteLine(ClientsAddresses[i].ToString());
                sw.Flush();
            }
        }

        // ((Type 3))
        // request to join the game
        if (IncomingMessage.StartsWith("Join"))
        {
            // get the player string by removing un-needed part
            string PlayerStr = IncomingMessage.Remove(0,4);
            // get the client (new player) IP Address
            ip = ((IPEndPoint)ss.RemoteEndPoint).Address;
            // send back the client, the Turn Index
            sw.WriteLine(Game.ConnectedPlayers.Count);
            sw.Flush();

            // add the new player IP Address
            ClientsAddresses.Add(ip);

            // Add the new player to connected players
            Game.ConnectedPlayers.Add(Game.ConvertStringToPlayer(PlayerStr));

            // update all other clients of the new player
            NewClientUpdateOthers(PlayerStr,ip);
        }

        // close the socket, end of request
        ss.Close(); 

    } //end while
}

private static void UnactiveClient()
{
    // set the port that I will listen to
    int port = GamePort + Game.MyTurnIndex ;

    // create a TCP Listener 
    TcpListener Client = new TcpListener(port);
    Client.Start(); // start listening

    // define variables
    TcpClient cs ;
    NetworkStream ns ;
    StreamReader sr;
    string update;

    bool MyTurnFlag = true; 

    // loop until you receive your turn
    while (MyTurnFlag)
    {
        // wait for updates
        cs = Client.AcceptTcpClient();  

        // create network & reader streams
        ns = cs.GetStream();
        sr = new StreamReader(ns);

        // read the update
        update = sr.ReadLine();
                
        // string array to deal with the update
        string[] updateMsg; 

        // is it a NEW PLAYER Update Message
        if (update.StartsWith("New Player -->"))
        {
            // remove first part (Length of NewPlayer --> is 14)
            update = update.Remove(0,14); 

            // add the new player object 
            Game.ConnectedPlayers.Add(Game.ConvertStringToPlayer(update));

            // reads the new player IP Address
            update = sr.ReadLine();

            // add the new player IP Address to Address List
            ClientsAddresses.Add(update);

            // close the socket
            cs.Close();

        } 

        // is it a Game Start Update Message
        else if(update.StartsWith("Start Game-->"))
        {
            // A received message can be "Start Game-->5#2
            // Upto 5#2 everything is removed
            // 5 is the number of columns
            // 2 is the number of rows
            //remove unneeded info.
            update = update.Remove(0,13); 

            string[] rowcol = update.Split(new char[] {'#'});
            int row = Convert.ToInt32(rowcol[0]);
            int col = Convert.ToInt32(rowcol[1]);

            // These values will be used by MatrixDisplay function
            form.row = row;
            form.col = col;

            Game.IsGameStarted = true; // game state is started
            // close the client
            cs.Close();
            // display matrix on the user form
            form.Invoke(new displayMethod(form.MatrixDisplay),null);
        }
        else if ( update.StartsWith("alphabet"))
        {
            // Example alphabet-10-10-a#colour#

            string x1s;
            string y1s;
            int index;

            index = update.IndexOf("-");
            update = update.Remove(0,index+1);
            index = update.IndexOf("-");

            x1s = update.Substring(0,index);
            update = update.Remove(0,index+1);
            index = update.IndexOf("-");
            y1s = update.Substring(0,index);

            string update1 = update.Remove(0,index+1);
            update1 = update1.Substring(0,1);
            index = update.IndexOf("#");

            string colour = update.Remove(0,index+1);
            colour = colour.TrimEnd('#');

            // pass the parameters to DisplayAlphaBet method
            // This function displays the alphabet
            form.DisplayAlphaBet(Convert.ToInt32(x1s), 
                      Convert.ToInt32(y1s), update1,colour);
            cs.Close();
        }
        else if(update.StartsWith("Game Over"))
        {
            string[] ln = update.Split(new char[] {'#'});
            ln[0] =  ln[0].Remove(0,9);

            MessageBox.Show(ln[0] + " Won the game " + "Score:" + ln[1]);
            cs.Close();
        }
        else if (update.StartsWith("word"))
        {
            int index;
            string Stringtemp1;
            string Stringtemp2;
            Stringtemp1 = update;
            Stringtemp2 = update;

            // index extraction
            index = Stringtemp1.IndexOf("#");
            Stringtemp1 = Stringtemp1.Remove(0,index+1);

            index = Stringtemp1.IndexOf("@");
            Stringtemp1 = Stringtemp1.Substring(0,index);

            int LabelIndex = Convert.ToInt32(Stringtemp1);
            index = Stringtemp2.IndexOf("@");
            Stringtemp2 = Stringtemp2.Remove(0,index+1);

            int LabelScore = Convert.ToInt32(Stringtemp2);
            index = 0;

            index = update.IndexOf("#");
            update = update.Substring(0,index);
            index = 0;

            ArrayList xs = new ArrayList();
            ArrayList ys = new ArrayList();

            index = update.IndexOf("-");
            update = update.Remove(0,index+1);
            index = update.IndexOf("W");
            string coordinates = update.Substring(0,index);
            update = update.Remove(0,index+1);
            index = update.IndexOf("-");
            update = update.Remove(0,index+1);

            string[] ln = coordinates.Split(new char[] {'-'});
            for (int i=0;i < ln.Length;i+=2) 
                xs.Add(ln[i]);

            for (int i=1;i < ln.Length;i+=2)
                ys.Add(ln[i]);

            form.DisplayColour(xs,ys,update,LabelIndex,LabelScore);
            cs.Close();
        }

        // is it a Your Turn Message
        else if (update.StartsWith("TURN")) 
        {
            Game.MyTurn = true; // Set my turn
            MyTurnFlag = false; // exit from this state
            cs.Close(); // close the socket
            Client.Stop(); // stop client mode; do not listen for updates

            // Current player is the local Player
            Game.CurrentPlayerObj = Game.LocalPlayer;
        }
        else //ignore other messages
            cs.Close(); 
    } // End of while(true) statement
}