Hello Monks,

I have a need for multiple producer processes to send small messages to a single consumer process all living on the same server - these do not have to be received in order or be guaranteed. Based on reading about socket domains and types, I decided to use AF_UNIX domain and datagram type.

Patching together what I could glean from perldoc and the perl cookbook, here is my code for server and client further below.

The problem is the server starts up and seems to wait at $sock->recv() as expected, but as soon as I run the client, the server comes out of the while loop without printing the data that was received and exits. I would have expected a server output of "Hello" and for the server to continue to listen. Also, nothing is printed for $@ or $! in either server or client

This has been driving me crazy for some hours now. Any help would be appreciated. Thanks!

Server:

#!/usr/bin/perl

$| = 1;
use strict;
use IO::Socket::UNIX;

my $SOCK_PATH = "/tmp/mysock";
unlink $SOCK_PATH;
my $sock = IO::Socket::UNIX->new(
  Type => SOCK_DGRAM(),
  Local => $SOCK_PATH,
  Listen => 10,
) or die "error: $@";

my $data;
while ($sock->recv($data, 1024)) {
  print "received: $data\n";
}
print "exiting: $!\n";
[download]

Client

#!/usr/bin/perl

$| = 1;
use strict;
use IO::Socket::UNIX;

my $SOCK_PATH = "/tmp/mysock";
my $sock = IO::Socket::UNIX->new(
  Type => SOCK_DGRAM(),
  Peer => $SOCK_PATH,
);
$sock->send("Hello") or die "error: $@";
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.