Man page - dns_ip6_qualify(3)

Packages contains this manual

Manual

dns_ip6_qualify

NAME
SYNTAX
DESCRIPTION
QUALIFICATION
SEE ALSO

NAME

dns_ip6_qualify - qualify name and look up IPv6 addresses

SYNTAX

#include <libowfat/dns.h>

int dns_ip6_qualify (stralloc* out ,stralloc* fqdn ,
const stralloc* udn );

DESCRIPTION

dns_ip6_qualify feeds the name udn through qualification and looks up 16-byte IPv6 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.

dns_ip6_qualify also looks up 4-byte IPv4 addresses and converts them into IPv4-mapped IPv6 addresses (::ffff:1.2.3.4) to provide easy backwards compatibility for IPv6 applications.

If dns_ip6_qualify has trouble with the qualification, has trouble with DNS, or runs out of memory, it returns -1, setting errno appropriately. It may or may not change out and fqdn .

QUALIFICATION

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

SEE ALSO

dns_ip6(3), dns_ip6_packet(3), dns_ip4_qualify(3)