checkServers.php
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checkServers.php
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	<?php
	if (!isset($global['systemRootPath'])) {
	$configFile = '../../videos/configuration.php';
	if (file_exists($configFile)) {
	require_once $configFile;
	}
	}

	if (!User::isAdmin()) {
	header("Location: {$global['webSiteRootURL']}?error=" . __("You can not do this"));
	exit;
	}

	if (!empty($_GET['newServer'])) {
	$p = AVideoPlugin::loadPluginIfEnabled("Meet");
	$p->setDataObjectParameter("server->value", preg_replace("/[^0-1a-z.]/i", "", $_GET['newServer']));
	}

	$obj = AVideoPlugin::getObjectDataIfEnabled("Meet");
	//_error_log(json_encode($_SERVER));
	if (empty($obj)) {
	die("Plugin disabled");
	}
	$m = AVideoPlugin::loadPlugin("Meet");
	$emptyObject = $m->getEmptyDataObject();

	$timeouts = 2000;
	?>

	<!DOCTYPE html>
	<html lang="<?php echo $_SESSION['language']; ?>">
	<head>
	<title><?php echo __("Check Meet Servers"); ?> - <?php echo $config->getWebSiteTitle(); ?></title>
	<?php
	include $global['systemRootPath'] . 'view/include/head.php';
	?>
	</head>
	<body class="<?php echo $global['bodyClass']; ?>">
	<?php
	include $global['systemRootPath'] . 'view/include/navbar.php';
	?>
	<div class="container-fluid">
	<div class="panel panel-default">
	<div class="panel-heading">
	<a href="<?php echo $global['webSiteRootURL']; ?>plugin/Meet/" class="btn btn-default" data-toggle="tooltip" title="<?php echo __("Create a Meet"); ?> " data-placement="bottom" >
	<i class="fas fa-comments"></i> <?php echo __("Create a Meet"); ?>
	</a>
	</div>
	<div class="panel-body tabbable-line">
	<div class="row">
	<?php
	foreach ($emptyObject->server->type as $key => $value) {
	if ($key == "custom") {
	?>
	<div class="col-xs-6">
	<div class="panel panel-default" id="panel<?php echo $newKey; ?>">
	<div class="panel-heading ">
	<?php
	echo "<b>{$value} ({$obj->CUSTOM_JITSI_DOMAIN})</b> ";
	if ($obj->server->value !== $key) {
	?>
	<a href="<?php echo $global['webSiteRootURL']; ?>plugin/Meet/?newServer=<?php echo $key; ?>" data-toggle="tooltip" data-placement="bottom" title="Change to (<?php echo $value; ?>) server" >
	<i class="fas fa-random" ></i>
	</a>
	<?php
	} else {
	?>
	<a href="<?php echo $global['webSiteRootURL']; ?>plugin/Meet/" data-toggle="tooltip" data-placement="bottom" title="Stay on (<?php echo $value; ?>)" >
	<i class="fas fa-check" ></i>
	</a>
	<?php
	}
	?>
	</div>
	</div>
	</div>
	<?php
	} else {



	$newKey = str_replace(".", "_", $key);
	?>
	<div class="col-xs-6">
	<div class="panel panel-default" id="panel<?php echo $newKey; ?>">
	<div class="panel-heading ">
	<?php
	echo "<b>{$value}</b> ";
	if ($obj->server->value !== $key) {
	?>
	<a href="<?php echo $global['webSiteRootURL']; ?>plugin/Meet/?newServer=<?php echo $key; ?>" data-toggle="tooltip" data-placement="bottom" title="Change to (<?php echo $value; ?>) server" >
	<i class="fas fa-random" ></i>
	</a>
	<?php
	} else {
	?>
	<a href="<?php echo $global['webSiteRootURL']; ?>plugin/Meet/" data-toggle="tooltip" data-placement="bottom" title="Stay on (<?php echo $value; ?>)" >
	<i class="fas fa-check" ></i>
	</a>
	<?php
	}
	?>
	<span class="label label-primary grade pull-right" id="grade<?php echo $newKey; ?>">
	<i class="fas fa-cog"></i>
	</span>

	</div>
	<div class="panel-body">
	<ul class="list-group">
	<li class="list-group-item">
	<i class="fas fa-download"></i> Download Speed
	<small class="text-muted" id='gradespeed<?php echo $newKey; ?>'></small>
	<span class="badge" id='speed<?php echo $newKey; ?>'>
	<i class="fas fa-cog"></i>
	</span>
	</li>
	<li class="list-group-item">
	<i class="fas fa-upload"></i> Upload Speed
	<small class="text-muted" id='gradeUspeed<?php echo $newKey; ?>'></small>
	<span class="badge" id='Uspeed<?php echo $newKey; ?>'>
	<i class="fas fa-cog"></i>
	</span>
	</li>
	<li class="list-group-item">
	<i class="fas fa-stopwatch"></i> Response Time
	<small class="text-muted" id='graderesponse<?php echo $newKey; ?>'></small>
	<span class="badge" id='response<?php echo $newKey; ?>'>
	<i class="fas fa-cog"></i>
	</span>
	</li>
	<li class="list-group-item">
	<i class="fas fa-network-wired"></i> Sites Active
	<small class="text-muted" id='gradetotalSitesActive<?php echo $newKey; ?>'></small>
	<span class="badge" id='totalSitesActive<?php echo $newKey; ?>'>
	<i class="fas fa-cog"></i>
	</span>
	</li>
	<li class="list-group-item">
	<i class="fas fa-video"></i> Streamers Services
	<small class="text-muted" id='gradeStreamersServices<?php echo $newKey; ?>'></small>
	<span class="badge" id='StreamersServices<?php echo $newKey; ?>'>
	<i class="fas fa-cog"></i>
	</span>
	</li>
	</ul>
	</div>
	</div>
	</div>
	<?php
	}
	}
	?>
	</div>
	<div class="row">
	<div class="col-sm-12">
	<div class="alert alert-info">
	Before Change the server make sure you do not have any meeting running.
	Other users may not able to connect after you change it.
	</div>
	</div>
	<div class="col-sm-12">
	<div class="alert alert-info">
	Higher grade, means the server is better for a meeting.
	</div>
	</div>
	</div>
	</div>
	</div>

	<?php
	include $global['systemRootPath'] . 'view/include/footer.php';
	?>
	<script>

	var roundedDecimals = 2;
	var bytesInAKilobyte = 1024;
	var tries = 1;
	var timeouts = <?php echo $timeouts; ?>;

	function speed(bitsPerSecond) {
	var Kbps = (bitsPerSecond / bytesInAKilobyte).toFixed(roundedDecimals);
	if (Kbps <= 1)
	return {value: bitsPerSecond, units: "Bps"};
	var MBps = (Kbps / bytesInAKilobyte).toFixed(roundedDecimals);
	//if (MBps <= 1)
	return {value: Kbps, units: "Kbps", text: Kbps + " Kbps", bitsPerSecond: bitsPerSecond};
	//else
	//return {value: MBps, units: "MBps", text: MBps + " MBps", bitsPerSecond: bitsPerSecond};
	}

	function checkSpeed(server) {
	var imageAddr = "https://" + server + "/jesus.png?n=" + Math.random();
	var startTime, endTime;
	var downloadSize = 3881702;//3.70 MB
	var download = new Image();
	var serverId = server.replace(/[.]/g, "_");
	var speedId = '#speed' + serverId;
	var gradespeedId = '#gradespeed' + serverId;
	download.onload = function () {
	endTime = (new Date()).getTime();
	var duration = (endTime - startTime) / 1000;
	var bitsLoaded = downloadSize * 8;
	var speedBps = (bitsLoaded / duration).toFixed(roundedDecimals);
	var response = speed(speedBps);
	console.log(speedBps);
	$(gradespeedId).html("+" + (speedBps / 1000000).toFixed(2));
	sitesGrade[server] += (speedBps / 1000000);

	animateValue('speed' + serverId, 0, response.value, timeouts * 2, "", response.units);
	}
	download.onerror = function () {
	$(speedId).html(response.text);
	}
	startTime = (new Date()).getTime();
	download.src = imageAddr;
	}

	function checkServerUsage(server) {
	var ajaxTime = new Date().getTime();
	$.ajax({
	url: "https://" + server + "/api/info.json.php",
	}).done(function (response) {
	var totalTime = new Date().getTime() - ajaxTime;
	var serverId = server.replace(/[.]/g, "_");

	animateValue('response' + serverId, 0, totalTime, timeouts * 2, "", "ms");
	animateValue('totalSitesActive' + serverId, 0, response.totalSitesActive, timeouts * 2, "", "/" + (response.totalSitesActive + response.totalSitesInactive));
	animateValue('StreamersServices' + serverId, 0, response.totalOnlineLiveStreamersServices, timeouts * 2, "", "/" + (response.totalLiveStreamersServices));

	// calculate grade
	sitesGrade[server] -= (response.totalOnlineLiveStreamersServices * 10);
	sitesGrade[server] -= (response.totalLiveStreamersServices);
	sitesGrade[server] -= (response.totalSitesActive);
	sitesGrade[server] -= (totalTime / 50);

	$('#graderesponse' + serverId).html("-" + (totalTime / 50).toFixed(2));
	$('#gradetotalSitesActive' + serverId).html("-" + (response.totalSitesActive).toFixed(2));
	$('#gradeStreamersServices' + serverId).html("-" + ((response.totalOnlineLiveStreamersServices * 10) + (response.totalLiveStreamersServices)).toFixed(2));


	// Here I want to get the how long it took to load some.php and use it further
	}).fail(function (jqXHR, textStatus) {
	tries++;
	setTimeout(function () {
	checkServerUsage(server);
	}, tries * timeouts);
	});
	}

	function check(server) {
	checkSpeed(server);
	checkServerUsage(server);
	}

	function checkGrades() {
	bestGrade = -1;
	bestGradeServer = '';
	for (const server in sitesGrade) {
	if (bestGrade < sitesGrade[server]) {
	bestGrade = sitesGrade[server];
	bestGradeServer = server;
	}
	var serverId = server.replace(/[.]/g, "_");
	$('#grade' + serverId).html("Grade: " + (sitesGrade[server].toFixed(2)));
	}
	var serverId = bestGradeServer.replace(/[.]/g, "_");
	$('.grade').not('#grade' + serverId).removeClass('label-success');
	$('.grade').not('#grade' + serverId).addClass('label-primary');
	$('#grade' + serverId).addClass('label-success');
	$('#grade' + serverId).removeClass('label-primary');
	}


	function checkUploadSpeed(server, iterations, update) {
	var average = 0,
	index = 0,
	timer = window.setInterval(check, 5000);
	check();

	function check() {
	var xhr = new XMLHttpRequest(),
	url = 'https://' + server + '?cache=' + Math.floor(Math.random() * 10000), //prevent url cache
	data = getRandomString(1), //1 meg POST size handled by all servers
	startTime,
	speed = 0;
	xhr.onreadystatechange = function (event) {
	if (xhr.readyState == 4) {
	speed = Math.round(1024 / ((new Date() - startTime) / 1000));
	average == 0
	? average = speed
	: average = Math.round((average + speed) / 2);
	update(speed, average);
	index++;
	if (index == iterations) {
	window.clearInterval(timer);
	}
	;
	}
	;
	};
	xhr.open('POST', url, true);
	startTime = new Date();
	xhr.send(data);
	}
	;

	function getRandomString(sizeInMb) {
	var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+`-=[]\{}\|;':,./<>?", //random data prevents gzip effect
	iterations = sizeInMb * 1024 * 1024, //get byte count
	result = '';
	for (var index = 0; index < iterations; index++) {
	result += chars.charAt(Math.floor(Math.random() * chars.length));
	}
	;
	return result;
	}
	;
	}

	function runAll(server) {
	var serverId = server.replace(/[.]/g, '_');
	$('#panel' + serverId + " .fa-cog").addClass('fa-spin');
	sitesGrade[server] = 100;
	check(server);
	checkUploadSpeed(server, 1, function (speed, average) {
	var serverId = server.replace(/[.]/g, '_');

	animateValue('Uspeed' + serverId, 0, average, timeouts * 2, "", "Kbps");

	if (previewsGrade[server]) {
	sitesGrade[server] -= previewsGrade[server];
	}
	previewsGrade[server] = (average / 50);
	sitesGrade[server] += previewsGrade[server];

	$('#gradeUspeed' + serverId).html('+' + previewsGrade[server].toFixed(2));
	});
	}

	function animateValue(id, start, end, duration, prepend, postpend) {
	// assumes integer values for start and end

	var obj = document.getElementById(id);
	var range = end - start;
	// no timer shorter than 50ms (not really visible any way)
	var minTimer = 50;
	// calc step time to show all interediate values
	var stepTime = Math.abs(Math.floor(duration / range));

	// never go below minTimer
	stepTime = Math.max(stepTime, minTimer);

	// get current time and calculate desired end time
	var startTime = new Date().getTime();
	var endTime = startTime + duration;
	var timer;

	function run() {
	var now = new Date().getTime();
	var remaining = Math.max((endTime - now) / duration, 0);
	var value = Math.round(end - (remaining * range));
	obj.innerHTML = prepend + " " + value + " " + postpend;
	if (value == end) {
	clearInterval(timer);
	}
	}

	timer = setInterval(run, stepTime);
	run();
	}

	var previewsGrade = {};

	var sitesGrade = {};
	$(document).ready(function () {

	<?php
	$count = 0;
	foreach ($emptyObject->server->type as $key => $value) {
	if ($key == 'custom') {
	continue;
	}
	$count++;
	echo "setTimeout(function(){runAll('{$key}')}," . ($count * $timeouts) . ");";
	}
	?>
	setInterval(function () {
	checkGrades();
	}, 1000);
	});
	</script>
	</div>
	</body>
	</html>

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