DNS::LDNS::RData(3)

💖 DNS::LDNS::RData — the manual page, but make it cute 💖

okay bestie, welcome to DNS::LDNS::RData(3) from the User Contributed Perl Documentation girlies 🎀 this is the little page that explains RData — aka the rdata field, or a dname, inside an rr. yes it's giving "DNS internals" and yes you're gonna slay it. ✨

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✨ NAME ✨

DNS::LDNS::RData — Rdata field or a dname in an rr 💅

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🦋 SYNOPSIS 🦋

here's the whole vibe, copy-paste ready, no cap:

  use DNS::LDNS ':all'

  my rd = new DNS::LDNS::RData(rdf_type, str)
  rd2 = rd->clone

  rdf_type = rd->type
  rd->set_type(rdf_type)

  rd->print(\*FILE)
  str = rd->to_string

  count = rd->label_count
  rd2 = rd->label(pos)

  bool = rd->is_wildcard
  bool = rd->matches_wildcard(wildcard)
  bool = rd->is_subdomain(parent)

  rd2 = rd->left_chop

  status = rd->cat(rd2)
  rd->compare(rd2)
  rd2 = rd->address_reverse
  rd2 = rd->dname_reverse

  rd2 = rd->nsec3_hash_name(name, algorithm, iterations, salt)

  epoch = rd->to_unix_time
( epoch = rd->2native_time_t )

  rr_type = rd->to_rr_type

so like, what's happening here 👀

• You build one with new DNS::LDNS::RData(rdf_type, str) — give it a type and a string, boom, you got an object. Or you can rd->clone an existing one if you want a twin. main character duplication energy 👑
• rd->type reads the rdf type, rd->set_type(rdf_type) sets it. read it, write it, obsessed.
• rd->print(\*FILE) dumps it out to a filehandle, and rd->to_string gives you the string version instead. lowkey both are useful.
• Labelling era: rd->label_count tells you how many labels there are, rd->label(pos) hands you the one at pos.
• Wildcard checks bestie!! rd->is_wildcard, rd->matches_wildcard(wildcard), and rd->is_subdomain(parent) — all returning bools, all doing exactly what they say 🫶
• rd->left_chop — literally chops from the left. iconic behaviour.
• The duo: rd->cat(rd2) concatenates and gives you back a status, and rd->compare(rd2) compares. and then rd->address_reverse and rd->dname_reverse flip things around for you 🔄
• NSEC3 moment: rd->nsec3_hash_name(name, algorithm, iterations, salt) — give it a name, algorithm, iterations and salt, get back a hashed name. it's giving cryptography, it's giving slay 🧚
• Time stuff: rd->to_unix_time gives you an epoch, and there's rd->2native_time_t for the same energy.
• And finally rd->to_rr_type hands you back an rr_type. cute.

fr fr, just follow the signature order and you're golden — the args are positional, no named-arg nonsense here.

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🌈 SEE ALSO 🌈

go touch grass at the source, bestie:

• http://www.nlnetlabs.nl/projects/ldns

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💜 AUTHOR 💜

Erik Pihl Ostlyngen, <erik.ostlyngen@uninett.no> — the legend who wrote this. shoutout 🫡

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🎀 COPYRIGHT AND LICENSE 🎀

Copyright (C) 2013 by UNINETT Norid AS

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.14.2 or, at your option, any later version of Perl 5 you may have available.

so yeah, it's free software, same terms as Perl, version 5.14.2 or any later version you have. you're covered, you're safe, you're thriving 💖

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and that's the page, bestie!! this was DNS::LDNS::RData(3) from perl v5.42.2, dated 2026-06-11 — tysm for reading, go write some rdata, ily, periodt 💅✨🌸