httpdumpd - http でリクエストされたものをなんとなく stdout に dump するやつ

perl でサラッと｡

#!/usr/bin/env perl
use strict;
use warnings;
use Plack::Request;
use Plack::Runner;
use Pod::Usage;
use Getopt::Long;

my $port = 5000;
my $help = 0;

GetOptions(
    'port|p=i' => \$port,
    'help|h'   => \$help,
) or pod2usage(2);

pod2usage(1) if $help;

my $app = sub {
    my $env = shift;
    my $req = Plack::Request->new($env);
    my $body = $req->content; # リクエストボディを取得

    # PSGI関連のキーを除外してダンプ
    my %filtered_env = map { $_ => $env->{$_} } grep { $_ !~ /^psgi/ } keys %$env;
    for my $key (sort keys %filtered_env) {
        print("$key: @{[ $filtered_env{$key} ]}\n");
    }
    print("\n\n$body\n\n");

    return [200, ['Content-Type' => 'text/plain'], ["OK"]];
};

# Plack::Runnerを使ってアプリケーションを実行
my $runner = Plack::Runner->new;
$runner->parse_options('-p', $port); # ポート番号を指定
$runner->run($app);

__END__

=head1 NAME

httpdumpd - Simple HTTP server to dump request details

=head1 SYNOPSIS

    httpdumpd [options]

    Options:

       -p --port       Port to listen on (default: 4318)
       -? --help       Display this help message

=head1 DESCRIPTION

This script starts a simple HTTP server that listens on the specified port
and dumps the details of incoming HTTP requests, excluding 'psgi' prefixed
environment variables, to the standard error.

=cut

Published: 2025-01-01(Thu) 11:20