return $key eq $digest ? Apache2::Const::OK : Apache2::Const::FORBIDDEN;
there are no further customized code for Apache2::Const::OK.
the httpd.conf just as:
<VirtualHost *:80>
ServerAdmin webmaster@localhost
ServerName my.site.net
DocumentRoot /var/www/feedback
PerlPostConfigRequire /etc/apache2/modperl/startup.pl
<Location />
SetHandler modperl
PerlAccessHandler MLFB
</Location>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/mlfb.access.log combined
</VirtualHost>