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# IO::Socket::UNIX.pm
#
# Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
package IO::Socket::UNIX;
use strict;
use IO::Socket;
use Carp;
our @ISA = qw(IO::Socket);
our $VERSION = "1.42";
IO::Socket::UNIX->register_domain( AF_UNIX );
sub new {
my $class = shift;
unshift(@_, "Peer") if @_ == 1;
return $class->SUPER::new(@_);
}
sub configure {
my($sock,$arg) = @_;
my($bport,$cport);
my $type = $arg->{Type} || SOCK_STREAM;
$sock->socket(AF_UNIX, $type, 0) or
return undef;
if(exists $arg->{Blocking}) {
$sock->blocking($arg->{Blocking}) or
return undef;
}
if(exists $arg->{Local}) {
my $addr = sockaddr_un($arg->{Local});
$sock->bind($addr) or
return undef;
}
if(exists $arg->{Listen} && $type != SOCK_DGRAM) {
$sock->listen($arg->{Listen} || 5) or
return undef;
}
elsif(exists $arg->{Peer}) {
my $addr = sockaddr_un($arg->{Peer});
$sock->connect($addr) or
return undef;
}
$sock;
}
sub hostpath {
@_ == 1 or croak 'usage: $sock->hostpath()';
my $n = $_[0]->sockname || return undef;
(sockaddr_un($n))[0];
}
sub peerpath {
@_ == 1 or croak 'usage: $sock->peerpath()';
my $n = $_[0]->peername || return undef;
(sockaddr_un($n))[0];
}
1; # Keep require happy
__END__
=head1 NAME
IO::Socket::UNIX - Object interface for AF_UNIX domain sockets
=head1 SYNOPSIS
use IO::Socket::UNIX;
my $SOCK_PATH = "$ENV{HOME}/unix-domain-socket-test.sock";
# Server:
my $server = IO::Socket::UNIX->new(
Type => SOCK_STREAM(),
Local => $SOCK_PATH,
Listen => 1,
);
my $count = 1;
while (my $conn = $server->accept()) {
$conn->print("Hello " . ($count++) . "\n");
}
# Client:
my $client = IO::Socket::UNIX->new(
Type => SOCK_STREAM(),
Peer => $SOCK_PATH,
);
# Now read and write from $client
=head1 DESCRIPTION
C<IO::Socket::UNIX> provides an object interface to creating and using sockets
in the AF_UNIX domain. It is built upon the L<IO::Socket> interface and
inherits all the methods defined by L<IO::Socket>.
=head1 CONSTRUCTOR
=over 4
=item new ( [ARGS] )
Creates an C<IO::Socket::UNIX> object, which is a reference to a
newly created symbol (see the C<Symbol> package). C<new>
optionally takes arguments, these arguments are in key-value pairs.
In addition to the key-value pairs accepted by L<IO::Socket>,
C<IO::Socket::UNIX> provides.
Type Type of socket (eg SOCK_STREAM or SOCK_DGRAM)
Local Path to local fifo
Peer Path to peer fifo
Listen Queue size for listen
If the constructor is only passed a single argument, it is assumed to
be a C<Peer> specification.
If the C<Listen> argument is given, but false, the queue size will be set to 5.
=back
=head1 METHODS
=over 4
=item hostpath()
Returns the pathname to the fifo at the local end
=item peerpath()
Returns the pathanme to the fifo at the peer end
=back
=head1 SEE ALSO
L<Socket>, L<IO::Socket>
=head1 AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all
bugs to <perlbug@perl.org>.
=head1 COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut