How about some example code, from Perl's most popular distribution? 
#!/usr/bin/perl

use strict;
use warnings;
use Data::Dumper;
use Mojolicious::Lite;

get '/' => sub {
  
  my $q = shift;
  
  $q->render(
    text   => Dumper($q->req->headers),
    format => 'plain'
  );
  
};

app->start;

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In reply to Re^2: PerlEx and HTTP request headers by Anonymous Monk
in thread PerlEx and HTTP request headers by Talroot

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