IO::Socket::UNIX(3perl)Perl Programmers Reference GuideIO::Socket::UNIX(3perl)
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 to <perlbug@perl.org>.
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.
perl v5.34.0 2023-11-23 IO::Socket::UNIX(3perl)
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