debian man page for dns_ip4_qualify

dns_ip4_qualify(3)					     Library Functions Manual						dns_ip4_qualify(3)

NAME
       dns_ip4_qualify - qualify name and look up IPv4 addresses

SYNTAX
       #include <dns.h>

       int dns_ip4_qualify(stralloc* out,stralloc* fqdn,
			   const stralloc* udn);

DESCRIPTION
       dns_ip4_qualify	feeds  the  name  udn  through	qualification and looks up 4-byte IP addresses for the result. It puts the fully qualified
       domain name into fqdn, puts the concatenation of the IP addresses into out, and returns 0. If the domain does not exist in DNS, or  has	no
       IP addresses, out will be empty.

       If  dns_ip4_qualify has trouble with the qualification, has trouble with DNS, or runs out of memory, it returns -1, setting errno appropri-
       ately. It may or may not change out and fqdn.

QUALIFICATION
       See http://cr.yp.to/djbdns/qualification.html

SEE ALSO
       dns_ip4(3), dns_ip4_packet(3), dns_ip6_qualify(3)

																dns_ip4_qualify(3)