You are looking at a very old, but free version of the course.
If you are interesed the most recent version, check it out
on the Perl Maven site.
We are using a small portable HTTP server built using HTTP::Daemon
which is part of libwww-perl for the examples.
You can also run it by typing
$ perl examples/www/server/server.pl
or type the following to get help
$ perl examples/www/server/server.pl --help
If you are interested in on-site trainings by the author, please
contact me directly.