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https://github.com/dex4er/perl-anyevent-dns-etchosts

AnyEvent::DNS::EtcHosts - Use /etc/hosts before DNS
https://github.com/dex4er/perl-anyevent-dns-etchosts

Last synced: 11 days ago
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AnyEvent::DNS::EtcHosts - Use /etc/hosts before DNS

Host: GitHub
URL: https://github.com/dex4er/perl-anyevent-dns-etchosts
Owner: dex4er
Created: 2013-12-09T00:39:20.000Z (about 11 years ago)
Default Branch: master
Last Pushed: 2023-06-28T22:18:33.000Z (over 1 year ago)
Last Synced: 2024-10-28T09:02:01.515Z (about 2 months ago)
Language: Perl
Size: 54.7 KB
Stars: 0
Watchers: 2
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README
- Changelog: Changes

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README

NAME

AnyEvent::DNS::EtcHosts - Use /etc/hosts before DNS

SYNOPSIS

use AnyEvent::DNS::EtcHosts;

use AnyEvent::DNS;
my $cv = AE::cv;
AnyEvent::DNS::any 'example.com', sub {
say foreach map { $_->[4] } grep { $_->[1] =~ /^(a|aaaa)$/ } @_;
$cv->send;
};

use AnyEvent::Socket;
my $cv = AE::cv;
AnyEvent::Socket::resolve_sockaddr $domain, $service, $proto, $family, undef, sub {
say foreach map { format_address((AnyEvent::Socket::unpack_sockaddr($_->[3]))[1]) } @_;
$cv->send;
};

DESCRIPTION

AnyEvent::DNS::EtcHosts changes AnyEvent::DNS behavior. The /etc/hosts
file is searched before DNS, so it is possible to override DNS entries.

The DNS lookups are emulated. This resolver returns the standard DNS
reply based on /etc/hosts file rather than real DNS.

You can choose a different file by changing PERL_ANYEVENT_HOSTS
environment variable.

This module also disables the original AnyEvent::Socket's helper
function which reads /etc/hosts file after the DNS entry was not found.
It prevents reading this file twice.

The AnyEvent::Socket resolver searches IPv4 and IPv6 addresses
separately. If you don't want to check the addresses in DNS, both IPv4
and IPv6 addresses should be placed in /etc/hosts or the protocol
family should be set explicitly for resolve_sockaddr function.