How do I write an HTTP server in Perl, years ago. years ago. k times. 8. Is there a web or HTTP server. The simplest option is to configure your web server to support CGI, then write your Perl to follow the CGI protocol. The CGI module is useful for this. You can configure servers to run any file with one. pl extension if you want. The PSGI Plack is slightly more complicated, but more flexible. This is a set of middleware that you can use, Web and Perl: Perl can be integrated into web servers to increase its processing power and it has the DBI package, which makes web database integration very simple. Application area. To begin with, Perl is very similar to C syntactically and is easy for users who have some knowledge of C. Since Perl is very similar to other widely used languages ​​syntactically, it is easier to code and to learn Perl. Programs can be written in Perl in any of the widely used text editors like Notepad gedit, etc. Recent posts on PerlSergio's answer regarding file descriptor specification are the best. However, there is another way: use select to change the default output file descriptor. And another way of doing things, using the while, each keys, rather than foreach, may be better in some cases, especially when the hash is tied to a file in some way and it would take a long time,