Sisimai::RFC791(3pm)

💖 Sisimai::RFC791 💖

okay bestie, quick vibe check: this is the Sisimai::RFC791 page from the User Contributed Perl Documentation, and it's literally just the IP-hunting part of Sisimai. no cap, she's tiny but she's mighty. ✨

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🌸 NAME 🌸

Sisimai::RFC791 — the IP related class, periodt. 💅

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🎀 SYNOPSIS 🎀

load her up and let her sniff out an IP like the main character she is:

use Sisimai::RFC791;

my $p = Sisimai::RFC791->find("mx7.example.jp:[192.0.2.27]"); # ["192.0.2.27"]

see that? in goes a messy string, out comes the IP. iconic. 🦋

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🌈 DESCRIPTION 🌈

Sisimai::RFC791 is a class related to IP. that's it. that's the whole thing. she does IP stuff and she does it well, and honestly? obsessed. 💜

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👑 CLASS METHODS 👑

✨ is_ipv4address(String)

the is_ipv4address method returns 1 if the argument is a valid IPv4 address. it's giving gatekeeper, and honestly it should be, because there are a LOT of fake IPs out here. 💀

print Sisimai::RFC791->is_ipv4address("192.0.2.25");   # 1
print Sisimai::RFC791->is_ipv4address("123.456.78.9"); # 0

192.0.2.25? valid, slay. 123.456.78.9? not valid, bestie, those octets are NOT it. 😭

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🦋 find(String)

the find method returns all the IPv4 addresses found in the given string. not just the first one — all of them. she's thorough like that. 🔥

my $v = "connection refused from 192.0.2.1, DNSBL returned 127.0.0.2";
my $p = Sisimai::RFC791->find($v); # ["192.0.2.1", "127.0.0.2"]

two IPs walked into a string and she caught BOTH of them, no cap. the way she just finds them. 🫶

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💖 AUTHOR 💖

azumakuniyuki — the legend, the icon, the moment. 🌟

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🎀 COPYRIGHT 🎀

Copyright (C) 2024,2026 azumakuniyuki, All rights reserved. 💜

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📜 LICENSE 📜

This software is distributed under The BSD 2-Clause License. go forth and share, responsibly. 💅

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just a lil reminder bestie: every flag, path, number and example above is verbatim, so you can trust her with your actual code. iykyk. 🧚

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and that's the whole page, fr fr. 🍓 this beauty ships with perl v5.40.1 and was dated 2026-07-05, and yep — she's still Sisimai::RFC791(3pm) at the end of the day. mwah. 💋✨