<?php

session_start();

//
// work around for globals registers.
// we will not use them at all
//


if (ini_get('register_globals'))
{
    foreach ($_SESSION as $key=>$value)
    {
        if (isset($GLOBALS[$key]))
            unset($GLOBALS[$key]);
    }
}


function debug($text) {
	$f = fopen("/tmp/modelbahn-php.log",'a+');  
	fwrite($f, $text.PHP_EOL);  
	fclose($f);  	
};


function readsend_data() {
	$data = "";
	$input = "";
	debug ("opening connection");
	$fp = stream_socket_client("unix:///tmp/modelbahn.socket", $errno, $errstr, 30);
	if (stream_set_blocking ($fp, FALSE) == FALSE) debug ("stream_set_blocking error");
	else debug ("stream_set_blocking ok");

	if (!$fp) {
    	debug ($errstr . "    " . $errno);
	} else {
		$json = file_get_contents("php://input");
		debug("Send to Server :".$json);
    	fwrite($fp, $json);
    	$timestart = gettimeofday();
    	$deltatime = 0;
	    while (!feof($fp) && $deltatime < 1000) {
	    	$input = fgets($fp, 1024);
	    	$data = $data.$input;
			$timeend = gettimeofday();
			
			if ($timeend["usec"] < $timestart["usec"]) $deltatime = 1000 + ($timeend["usec"] - $timestart["usec"])/1000;
			else $deltatime = ($timeend["usec"] - $timestart["usec"])/1000;

			$deltatime = $deltatime + ($timeend["sec"] - $timestart["sec"]) * 1000;
    	}
    	fclose($fp);
		debug ("got: $data");
		debug ("connection closed");
		return $data;
	}
	return $data;
};

$timerstart = microtime(true);
debug("*** php script called");

$request = 0;
$resultdata = array();

echo readsend_data();
$timeused = microtime(true) - $timerstart;
debug ("*** php script finished ********************************* ".$timeused."ms");