debian man page for dns_mx_packet

dns_mx_packet(3)					     Library Functions Manual						  dns_mx_packet(3)

NAME
       dns_mx_packet - extract MX records from DNS answer packet

SYNTAX
       #include <dns.h>

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

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

SEE ALSO
       dns_mx(3), dns_ip4(3), dns_ip6(3)

																  dns_mx_packet(3)