class nel_login_message:
    var _cmd;
    var _login;
    var _password;
    var _clientApplication;
    var _cp;
    var _lg;

    func _init(cmd, login, password, clientApplication, cp, lg):
        self._cmd = cmd;
        self._login = login;
        self._password = password;
        self._clientApplication = clientApplication;
        self._cp = cp;
        self._lg = lg;

    func get_request_string():
        var request_string = "cmd=" + self._cmd;
        if self._login != "":
            request_string += "&login=" + self._login;
        if self._password != "":
            request_string += "&password=" + self._password;
        if self._clientApplication != "":
            request_string += "&clientApplication=" + self._clientApplication;
        if self._cp != "":
            request_string += "&cp=" + self._cp;
        if self._lg != "":
            request_string += "&lg=" + self._lg;

        return request_string;