NAME
    AnyEvent::DNS - Helper for non-blocking DNS queries with Net::DNS

VERSION
    Version 0.01

SYNOPSIS
        use AnyEvent::DNS;

        my $d = AnyEvent::DNS->new (
           timeout  => 10,
           resolver => [
              nameservers => [qw/127.0.0.1/]
           ]
        );

        $d->send (sub {
           my ($pkt, $err, $errdesc) = @_;
           if ($err) {
              warn "Couldn't lookup: $err/$errdesc\n";
           } else {
              print "lookup response: ".$pkt->string."\n";
           }
        }, 'www.google.de', 'A');

DESCRIPTION
    This module is a thin wrapper to make non-blocking requests with
    Net::DNS. The main object, of the class AnyEvent::DNS, is a wrapper
    object around a Net::DNS::Resolver. And you are able to send
    non-blocking lookup queries, specify a timeout and assign a callback to
    process the results.

METHODS
    new (%args)
        This is the constructor for AnyEvent::DNS, %args can have following
        keys:

        *   "timeout"

            The timeout in seconds for a lookup requests sent via the "send"
            method. If not set, no timeout will be installed.

        *   "resolver"

            This key should have an array reference as value, which contains
            the arguments passed to the Net::DNS::Resolver constructor.

    resolver
        Returns the internal Net::DNS::Resolver object used for queries.

    send ($cb, @bgsend_args)
        This method will send a query via the "bgsend" method of
        Net::DNS::Resolver and take care of installing the watcher and
        timeouts and error reporting.

        The callback $cb will have following arguments:

           my ($pkt, $err, $errdesc) = @_;

        Where $pkt is the Net::DNS::Packet object we got as response to the
        query. $err is one of: 'send failed', 'timeout', 'lookup failed',
        indicating the general cause of the error. $errdesc will contain the
        error description as returned by the "errorstring" method of
        Net::DNS::Resolver.

        If $err is not defined the query was successful and $pkt is set to
        the response object.

        See also Net::DNS::Packet for more details about $pkt.

AUTHOR
    Robin Redeker, "<elmex at ta-sa.org>"

BUGS
    Please report any bugs or feature requests to "bug-anyevent-dns at
    rt.cpan.org", or through the web interface at
    <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=AnyEvent-DNS>. I will be
    notified, and then you'll automatically be notified of progress on your
    bug as I make changes.

SUPPORT
    You can find documentation for this module with the perldoc command.

        perldoc AnyEvent::DNS

    You can also look for information at:

    *   AnnoCPAN: Annotated CPAN documentation

        <http://annocpan.org/dist/AnyEvent-DNS>

    *   CPAN Ratings

        <http://cpanratings.perl.org/d/AnyEvent-DNS>

    *   RT: CPAN's request tracker

        <http://rt.cpan.org/NoAuth/Bugs.html?Dist=AnyEvent-DNS>

    *   Search CPAN

        <http://search.cpan.org/dist/AnyEvent-DNS>

ACKNOWLEDGEMENTS
COPYRIGHT & LICENSE
    Copyright 2008 Robin Redeker, all rights reserved.

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.