The timeout option, while it maybe seem useless, is still necessary in order for the script to work properly. On my ActivePerl, I couldn't get it to timeout without it. Also, are you sure that alarm isn't supported by your version of ActivePerl? I didn't encounter any problems using it. 
#!/usr/bin/perl -l

use POSIX qw(SIGALRM);
sub Begin { 
    eval {
        use strict;
        use warnings;
        POSIX::sigaction(SIGALRM,
            POSIX::SigAction->new(sub { die; }))
            || die "Error setting SIGALRM handler: $!";
            alarm 3;
    };
}

use strict;
use warnings;
use sigtrap;
use IO::Socket;

$|=1;

my ($socket, $client);

my $host   = '192.168.1.255';
my $port   = '5500';
my $listen = 10;

$socket = IO::Socket::INET->new(
    LocalHost => $host,
    LocalPort => $port,
    Proto     => 'tcp',
    Listen    => $listen,
    ReuseAddr => 1,
    Blocking  => 1,
    Timeout   => 3,
) or die "Couldn't create socket: $!";
print "Waiting for a connection...";

while ($client = $socket->accept()) {
    my $message = <$socket>;
    $client->autoflush(1);
    print $message;
    close $client;    
}
$socket->close();

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In reply to Re: Locked threads and tcp timeouts by Khen1950fx
in thread Locked threads and tcp timeouts by menth0l

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