1IO::Socket::UNIX(3pm)  Perl Programmers Reference Guide  IO::Socket::UNIX(3pm)
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NAME

6       IO::Socket::UNIX - Object interface for AF_UNIX domain sockets
7

SYNOPSIS

9           use IO::Socket::UNIX;
10
11           my $SOCK_PATH = "$ENV{HOME}/unix-domain-socket-test.sock";
12
13           # Server:
14           my $server = IO::Socket::UNIX->new(
15               Type => SOCK_STREAM(),
16               Local => $SOCK_PATH,
17               Listen => 1,
18           );
19
20           my $count = 1;
21           while (my $conn = $server->accept()) {
22               $conn->print("Hello " . ($count++) . "\n");
23           }
24
25           # Client:
26           my $client = IO::Socket::UNIX->new(
27               Type => SOCK_STREAM(),
28               Peer => $SOCK_PATH,
29           );
30
31           # Now read and write from $client
32

DESCRIPTION

34       "IO::Socket::UNIX" provides an object interface to creating and using
35       sockets in the AF_UNIX domain. It is built upon the IO::Socket
36       interface and inherits all the methods defined by IO::Socket.
37

CONSTRUCTOR

39       new ( [ARGS] )
40           Creates an "IO::Socket::UNIX" object, which is a reference to a
41           newly created symbol (see the "Symbol" package). "new" optionally
42           takes arguments, these arguments are in key-value pairs.
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44           In addition to the key-value pairs accepted by IO::Socket,
45           "IO::Socket::UNIX" provides.
46
47               Type        Type of socket (eg SOCK_STREAM or SOCK_DGRAM)
48               Local       Path to local fifo
49               Peer        Path to peer fifo
50               Listen      Queue size for listen
51
52           If the constructor is only passed a single argument, it is assumed
53           to be a "Peer" specification.
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55           If the "Listen" argument is given, but false, the queue size will
56           be set to 5.
57
58           If the constructor fails it will return "undef" and set the
59           $IO::Socket::errstr package variable to contain an error message.
60
61               $sock = IO::Socket::UNIX->new(...)
62                   or die "Cannot create socket - $IO::Socket::errstr\n";
63
64           For legacy reasons the error message is also set into the global $@
65           variable, and you may still find older code which looks here
66           instead.
67
68               $sock = IO::Socket::UNIX->new(...)
69                   or die "Cannot create socket - $@\n";
70

METHODS

72       hostpath()
73           Returns the pathname to the fifo at the local end
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75       peerpath()
76           Returns the pathanme to the fifo at the peer end
77

SEE ALSO

79       Socket, IO::Socket
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AUTHOR

82       Graham Barr. Currently maintained by the Perl Porters.  Please report
83       all bugs to <perlbug@perl.org>.
84

86       Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights
87       reserved.  This program is free software; you can redistribute it
88       and/or modify it under the same terms as Perl itself.
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92perl v5.34.0                      2021-10-18             IO::Socket::UNIX(3pm)
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