To test the perl module, you must restart the mini_httpd(8) so that it recognizes zxid.pl as CGI script:
mini_httpd -p 8443 -c zxid.pl -S -E zxid.pem
Then start browsing from
https://sp1.zxidsp.org:8443/zxid.pl
or if you want to avoid the common domain cookie check
https://sp1.zxidsp.org:8443/zxid.pl?o=E