static void HandleLogin(Connection con, string username, string password)
        {
            string index = con.index;
            if (string.IsNullOrEmpty(index))
            {
                Log.log(logType.Error, "Data send from null index?!");
                return;
            }
            bool canLogin = false;
            string reason = "";

            string accountID = "";

            if (Database.getInstance.accountExistsAndIsOk(username, password))
            {
                canLogin = true;
            }

            //check from database
            if (canLogin)
            {
                //get account id, to see if it is logged in

                //check if client is already signed in
                if (!Account.account.ContainsKey(index))
                {
                    foreach (var acc in Account.account)
                    {
                        if (Account.isLoggedIn(username))
                        {
                            //account is already signed in
                            canLogin = false;
                            reason = "Account already signed in!";

                            goto loopEnd;
                        }
                    }
                }
                else
                {
                    canLogin = false;
                    reason = "Client already has a signed in account!";
                }
            }
            else
            {
                reason = "Wrong username or password!";
            }

            loopEnd:

            if (canLogin)
            {
                Database.getInstance.updateAccountStatues(true, username);
                Database.getInstance.loadPlayer(index, username);
                reason = "You are logging in...";

                Account newAcc = new Account();
                newAcc.accountID = index;
                newAcc.password = password;
                newAcc.username = username;
                Account.account.Add(index, newAcc);
                Console.WriteLine("Account logged in: " + username + " | " + password);
                Spawner.SpawnPlayer(index);
                Player.player[index].initPlayer();
            }

            Server.SendLogin(canLogin, reason, index);
        }