IO::Socket::UNIX(3)

NAME
IO::Socket::UNIX - Object interface for AF_UNIX domain sockets

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

DESCRIPTION
"IO::Socket::UNIX" provides an object interface to creating and using sockets in the AF_UNIX domain. It is built upon the IO::Socket interface and inherits all the methods defined by IO::Socket.

CONSTRUCTOR

new ( [ARGS] )
    Creates an "IO::Socket::UNIX" object, which is a reference to a newly created symbol (see the Symbol package). "new" optionally takes arguments, these arguments are in key-value pairs.

    In addition to the key-value pairs accepted by IO::Socket, "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 "Peer" specification.

    If the "Listen" argument is given, but false, the queue size will be set to 5.

    If the constructor fails it will return "undef" and set the $IO::Socket::errstr package variable to contain an error message.

        $sock = IO::Socket::UNIX->new(...)
            or die "Cannot create socket - $IO::Socket::errstr\n";

    For legacy reasons the error message is also set into the global $@ variable, and you may still find older code which looks here instead.

        $sock = IO::Socket::UNIX->new(...)
            or die "Cannot create socket - $@\n";

METHODS

hostpath()
    Returns the pathname to the fifo at the local end

peerpath()
    Returns the pathanme to the fifo at the peer end

SEE ALSO
Socket, IO::Socket

AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs at <https://github.com/Perl/perl5/issues>.

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.