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Procedure TForm1.Timer1Timer(Sender: TObject);
Begin
    If CheckBox1.Checked Then
    Begin
        ClientSocket.host := ServerList[ListBox1.ItemIndex].IP;
        ClientSocket.Port := 7777;
        Panel1.Color := clYellow;
        ClientSocket.Open;
        Label3.Caption := 'Status: Checking...';
    End;
End;

Procedure TForm1.ClientSocketConnect(Sender: TObject;
    Socket: TCustomWinSocket);
Begin
    ClientSocket.Close;
    Case ClientSocket.Port Of
        7777:
            Begin
                Panel1.Color := clGreen;
                ClientSocket.Port := 2106;
                Panel2.Color := clYellow;
                ClientSocket.Open;
            End;
        2106:
            Begin
                Panel2.Color := clGreen;
                Label3.Caption := 'Status:';
            End
    End;

End;

Procedure TForm1.ClientSocketError(Sender: TObject;
    Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
    Var ErrorCode: Integer);
Begin
    ClientSocket.Close;
    ErrorCode := 0;
    Case ClientSocket.Port Of
        7777:
            Begin
                Panel1.Color := clRed;
                ClientSocket.Port := 2106;
                Panel2.Color := clYellow;
                ClientSocket.Open;
            End;
        2106:
            Begin
                Panel2.Color := clRed;
                Label3.Caption := 'Status:';
            End;
    End;
End;