dns_mx_packet(3)

✨ dns_mx_packet(3) ✨

okay so bestie, welcome to the dns_mx_packet page — it lives in the Library Functions Manual, section 3, and it is lowkey the backstage crew of DNS lookups. 🎀

🌸 NAME 🌸

dns_mx_packet — pull the MX records out of a DNS answer packet 💌

🦋 SYNTAX 🦋

#include <libowfat/dns.h>

int dns_mx_packet(stralloc* out,const char* buf,
                  unsigned int len);

💅 DESCRIPTION 💅

So dns_mx_packet is a low-level component of dns_mx, and the whole reason it exists is to make asynchronous DNS lookups possible. iykyk. 🫶

Here's the vibe: it reads a DNS packet of length len out of buf, extracts the MX records from the answer section of that packet, drops the result into out, and then returns 0 or -1 — exactly the same way dns_mx does. no cap, same energy, same return values. ✨

bestie this is the plumbing-level function fr fr — if you just wanna do a normal MX lookup, go hang with dns_mx instead. this one is for when you are the one juggling the packets. 😭

🌈 SEE ALSO 🌈

• dns_mx(3)
• dns_ip4(3)
• dns_ip6(3)

and that's the whole page, periodt 💖 that was dns_mx_packet(3), straight out of the Library Functions Manual, page 3, and honestly? iconic. go read dns_mx(3) next, ily, bye 👑🌸