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#-*- perl -*-
#
# Copyright (C) 2001,2002,2004,2005,2006 Ken'ichi Fukamachi
# Copyright (C) 2012 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $FML: INET4.pm,v 1.14 2006/07/09 12:11:13 fukachan Exp $
#
package Mail::Delivery::Net::INET4;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK);
use Carp;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(connect4);
# Descriptions: try connect(2) by IPv4.
# Arguments: OBJ($self) STR($mta)
# Side Effects: create ipv4 smtp connection
# Return Value: HANDLE
sub connect4
{
my ($self, $mta) = @_;
my $socket = undef;
# ASSERT
unless (defined $mta) {
$self->logerror("connect4: mta undefined");
return undef;
}
unless ($mta) {
$self->logerror("connect4: mta undefined");
return undef;
}
# XXX we should avoid croak() in IO::Socket module;
# XXX-TODO: timeout must be customizable.
eval {
local($SIG{ALRM}) = sub {
$self->logerror("timeout to connect $mta");
};
use IO::Socket;
$socket = new IO::Socket::INET(PeerAddr => $mta,
Timeout => 120,
);
};
if ($@) {
$self->logerror("cannot create socket for $mta");
$self->set_error("cannot create socket: $@");
return undef;
}
if (defined $socket) {
$self->logdebug("o.k. connected to $mta");
$self->set_socket($socket);
$socket->autoflush(1);
return $socket;
}
else {
$self->logdebug("cannot open socket ($!) mta=$mta");
$self->set_error("cannot open socket: $!");
return undef;
}
}
=head1 NAME
Mail::Delivery::Net::INET4 - establish tcp connection over IPv4.
=head1 SYNOPSIS
use Mail::Delivery::Net::INET4;
$mta = '127.0.0.1:25';
$self->connect4( { mta => $mta });
=head1 DESCRIPTION
This module tries to create a socket and establish tcp connection over
IPv4. This is a typical socket program.
=head1 METHODS
=head2 connect4()
try L<connect(2)>.
If it succeeds, return a file handle.
return undef if failes.
Also, save the socket handle via set_socket() access method.
Avaialble arguments follows:
connect4( { mta => $mta } );
$mta is a hostname or [raw_ipv4_addr]:port form, for example,
127.0.0.1:25.
=head1 SEE ALSO
L<Mail::Delivery::SMTP>,
L<IO::Socket>
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2001,2002,2004,2005,2006 Ken'ichi Fukamachi
Copyright (C) 2012 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
Mail::Delivery::Net::INET4 first appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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