Socket::GetAddrInfo::Socket6api(3) Provide Socket::GetAddrInfo functions


use Socket qw( AF_UNSPEC SOCK_STREAM );
use Socket::GetAddrInfo::Socket6api qw( getaddrinfo getnameinfo );
my $sock;
my @res = getaddrinfo( "", "www", AF_UNSPEC, SOCK_STREAM );
die "Cannot resolve name - $res[0]" if @res == 1;
while( @res >= 5 ) {
my ( $family, $socktype, $protocol, $addr, undef ) = splice @res, 0, 5, ();
$sock = IO::Socket->new();
$sock->socket( $family, $socktype, $protocol ) or
undef $sock, next;
$sock->connect( $addr ) or undef $sock, next;
if( $sock ) {
my ( $host, $service ) = getnameinfo( $sock->peername );
print "Connected to $host:$service\n" if defined $host;


Socket::GetAddrInfo provides the functions of "getaddrinfo" and "getnameinfo" using a convenient interface where hints and address structures are represented as hashes. Socket6 also provides these functions, in a form taking and returning flat lists of values.

This module wraps the functions provided by "Socket::GetAddrInfo" to provide them in an identical API to "Socket6". It is intended to stand as a utility for existing code written for the "Socket6" API to use these functions instead.


@res = getaddrinfo( $host, $service, $family, $socktype, $protocol, $flags )

This version of the API takes the hints values as separate ordered parameters. Unspecified parameters should be passed as 0.

If successful, this function returns a flat list of values, five for each returned address structure. Each group of five elements will contain, in order, the "family", "socktype", "protocol", "addr" and "canonname" values of the address structure.

If unsuccessful, it will return a single value, containing the string error message. To remain compatible with the "Socket6" interface, this value does not have the error integer part.

( $host, $service ) = getnameinfo( $addr, $flags )

This version of the API returns only the host name and service name, if successfully resolved. On error, it will return an empty list. To remain compatible with the "Socket6" interface, no error information will be supplied.


Paul Evans <[email protected]>