use strict;
use warnings;

use IO::Socket::INET;
use IO::Select;

my $server = IO::Socket::INET->new(
    LocalPort => 2005,
    type => SOCK_STREAM,
    Reuse => 1,
    Listen => 10
) or die "Server läuft nicht: $@\n";

my $select = IO::Select->new($server);

my %users = ();

while(my @readable = $select->can_read) {
    foreach my $socket (@readable) {
        if($socket == $server) {
            my ($client, $ip) = $socket->accept;
            $select->add($client);
            my ($port, $iaddr) = unpack_sockaddr_in($ip);
            $iaddr = inet_ntoa($iaddr);
            $users{rand(100)} = $iaddr;
            print "New Client connected: $iaddr\n";
            $client->print("Welcome\n");
        } else {
            my $line = $socket->getline;
            if(defined $line) {
               
 $line =~ s!\r?\n$!!g;
               
 if(lc($line) eq "quit") {
               
     print "Client quits\n";
               
     delete_socket($select, $socket);
               
 } else {
               
     print "Client says: [$line]\n";
               
     $socket->print("$line\n");
               
 }
            } else {
               
 print "Connection closed by client\n";
               
 delete_socket($select, $socket);
            }
        }
    }
}

sub delete_socket {
   my ($sel, $sock) = @_;
   $sel->remove($sock);
   $sock->close;
}