test t/io_unix.t failed in ubuntu

[TheAthlete]

Hello! I'm trying to install module IO::Socket::Timeout in Ubuntu 12.04, but the installation failed on the test t/io_unix.t

Here is the test output:

$ prove -l t/io_unix.t 
t/io_unix.t .. Can't call method "read_timeout" on an undefined value at t/io_unix.t line 69.
t/io_unix.t .. Dubious, test returned 1 (wstat 256, 0x100)
Failed 5/5 subtests 

Test Summary Report
-------------------
t/io_unix.t (Wstat: 256 Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: Bad plan.  You planned 5 tests but ran 0.
Files=1, Tests=0,  0 wallclock secs ( 0.04 usr  0.03 sys +  0.04 cusr  0.03 csys =  0.14 CPU)
Result: FAIL

The problem is that the test creates a path to the socket in the form

$PATH = "sock-$$";

although Ubuntu is not supported linking that name with domain UNIX socket. If you prescribe the full path in the "/tmp/sock-$$", then the error will not occur

Here is a sample code which demonstrates this:

use strict;
use warnings;
use utf8;

use Socket;

# my $path = "/tmp/sock-$$";
my $path = "sock-$$";

socket(my $socket, AF_UNIX, SOCK_STREAM, 0) or die "socket: $!";

my $addr = sockaddr_un($path);
bind($socket, $addr) or die "Can't bind: $!";

If $path = "sock-$$", an error message is generated:

$ perl test.pl
Can't bind: Operation not permitted at test.pl

If $path = "/tmp/sock-$$", then no error is thrown.