use strict;
use IO::Socket;
use threads;

$| = 1;

threads->create(\&server);
my $socket = IO::Socket::INET->new(Proto => "tcp", PeerAddr => "localhost", PeerPort => 7001) || print "Socket creation error: $!\n";
sleep(5);
print "about to close socket on client side\n";
close($socket);
print "closed socket on client side\n";
print $!;

sub server {
	my $server = new IO::Socket::INET(Proto => "tcp", LocalPort => 7001, Listen => 5)
          || die "failed to establish socket\n";
	my $client = $server->accept;
	sleep(1);
	print "about to close socket on server side\n";
	close($client);
	print "closed socket on server side\n";
}