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#!/usr/bin/perl
# vim: ts=2 sw=2 noexpandtab
use strict;
use warnings;
use feature qw( say );
use Socket qw( AF_INET unpack_sockaddr_in inet_ntoa );
use Socket::GetAddrInfo qw( :newapi getaddrinfo );
sub format_addr {
my ($port, $inaddr) = unpack_sockaddr_in $_[0];
sprintf "%s:%d", inet_ntoa($inaddr), $port;
}
use POE qw( Session Kernel Wheel::ReadWrite Wheel::Run Filter::Reference );
{
my $wheel_resolver;
POE::Session->create(
inline_states => {
_start => sub {
$wheel_resolver = POE::Wheel::Run->new(
Program => sub {
my ($err, @addrs) =
getaddrinfo("localhost", "www", {family => AF_INET});
die "$err" if $err;
print @{POE::Filter::Reference->new->put([$addrs[0]])};
},
StdoutFilter => POE::Filter::Reference->new,
StdoutEvent => 'resolver_input',
StderrEvent => 'resolver_error',
);
},
resolver_input =>
sub { say "POE resolved " . format_addr($_[ARG0]->{addr}) },
resolver_error => sub { say "POE resolver error $_[ARG0]" },
},
);
}
POE::Kernel->run;
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