#!/usr/bin/php
<?php
include '/opt/unetlab/html/includes/functions.php';
$pid = pcntl_fork();

if ($pid == -1) {
	exit("Error forking...\n");
}

if ($pid == 0) {
	$interval = 3600;
	sleep(10);

	while (true) {
		$fp = fsockopen('127.0.0.1', 444, $errno, $errstr, 30);
		fwrite($fp, 'CL');
		$interval = fread($fp, 1024);

		if ((int) $interval == 0) {
			exit();
		}

		fclose($fp);
		sleep($interval);
	}
}

$server = stream_socket_server('tcp://127.0.0.1:444', $errno, $errorMessage);

if ($server === false) {
	exit('Could not bind to socket: ' . $errorMessage);
}

$local_expire = strtotime('now');
$client_socks = array();

while (true) {
	$read_socks = $client_socks;
	$read_socks[] = $server;

	if (!stream_select($read_socks, $write, $except, 86400)) {
		continue;
	}

	if (in_array($server, $read_socks)) {
		$new_client = stream_socket_accept($server);

		if ($new_client) {
			$client_socks[] = $new_client;
		}

		unset($read_socks[array_search($server, $read_socks)]);
	}

	foreach ($read_socks as $sock) {
		$data = fread($sock, 128);

		if (!$data) {
			unset($client_socks[array_search($sock, $client_socks)]);
			@fclose($sock);
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