debian man page for dns_name_packet

dns_name_packet(3)					     Library Functions Manual						dns_name_packet(3)

NAME
       dns_name_packet - extract names from DNS answer packet

SYNTAX
       #include <dns.h>

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

DESCRIPTION
       dns_name_packet	is  a  low-level component of dns_name4, designed to support asynchronous DNS lookups. It reads a DNS packet of length len
       from buf, extracts the first PTR record from the answer section of the packet, puts the result into out, and returns 0 or -1 the  same  way
       as dns_name4.

SEE ALSO
       dns_name4(3), dns_name6(3), dns_ip4_packet(3)

																dns_name_packet(3)