<?php

require("udp-inc.php");

error_reporting(E_ALL | E_STRICT);

out(__FILE__, __LINE__, "Opening server port...");
$socket = stream_socket_server("udp://192.168.1.1:1113", $errno, $errstr, STREAM_SERVER_BIND);
if ((!is_resource($socket)) || ($errno > 0)) {
	die("$errstr ($errno)\n");
}

$pkt = "";

out(__FILE__, __LINE__, "Waiting for clients...");

do {
	$pkt = stream_socket_recvfrom($socket, 50, 0, $peer);
	//out(__FILE__, __LINE__, "Received packet ${pkt} from peer ${peer}.");

	if (trim($pkt) == "PING") {
		//out(__FILE__, __LINE__, "Sending data to peer ${peer}.");
		stream_socket_sendto($socket, (time().":md5=".md5(time())), 0, $peer);
	} else {
		out(__FILE__, __LINE__, "Invalid packet ${pkt} from peer ${peer}.");
		stream_socket_sendto($socket, "INVALID", 0, $peer);
	}
} while ($pkt !== false);

?>