I chopped down your code quite a bit, and also created a multi-threading server. I tried with 100 socket, and don’t see any problem.

Failed to go 200, the problem is low virtual memory, any way, the code itself works.

server.pl:
use IO::Socket::INET;
use threads;

use strict;

my $server = new IO::Socket::INET(Proto => "tcp", LocalPort => 7001, L
+isten => 5)
          || die "failed to establish socket\n";
while (1) {
    my $client = $server->accept;
    threads->create(\&client_handle, $client);
}

sub client_handle {
    my $client = shift;
    while (1) {
        my $line = <$client>;
        chomp $line;
        print $client $line + 1, "\n";
    }
}

client.pl:
use strict;
use IO::Socket;
use threads;
use threads::shared;

my $numClients = shift;
my %thread_status : shared;
my $server_status : shared = 'threading';
$| = 1;

print "Creating $numClients clients\n";
for (my $i=0; $i<$numClients; $i++) {
    my $socket = IO::Socket::INET->new(Proto => "tcp", PeerAddr => "lo
+calhost", PeerPort => 7001) || print "Socket creation error: $!\n";
    threads->new(\&handle_client,$socket,$i)->detach;
    print ".";
}
print "\nAll Created\n";

sleep 1;
$server_status = 'ready';

<STDIN>;

#<------------------------------------------------------------ handle_
+client -->
sub handle_client {
    my ($socket,$clientNum) = @_;
 
    while ($server_status eq 'threading') { sleep 1 }
    
    print $socket "1\n";
    while (1) {
        my $line = <$socket>;
        chomp $line;
        print "$clientNum <<== $line\n";
        print $socket $line + 1, "\n";
        sleep 1;
    }
    return;
}
[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.