285 lines
8.8 KiB
HTML
285 lines
8.8 KiB
HTML
<html>
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<head>
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<title>WebSockets Latency Test</title>
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<script src="include/util.js"></script>
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<script src="include/webutil.js"></script>
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<script src="include/websock.js"></script>
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<!-- Uncomment to activate firebug lite -->
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<!--
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<script type='text/javascript'
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src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'></script>
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-->
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</head>
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<body>
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Host: <input id='host' style='width:100'>
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Port: <input id='port' style='width:50'>
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Encrypt: <input id='encrypt' type='checkbox'>
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<br>
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Payload Size: <input id='payload_size' style='width:50'>
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Send Delay (ms): <input id='sendDelay' style='width:50' value="10">
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<input id='connectButton' type='button' value='Start' style='width:100px'
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onclick="connect();">
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<br><br>
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<table border=1>
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<tr>
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<th align="right">Packets sent:</th>
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<td align="right"><div id='sent'></div></td>
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</tr><tr>
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<th align="right">Packets Received:</th>
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<td align="right"><div id='received'></div></td>
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</tr><tr>
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<th align="right">Average Latency:</th>
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<td align="right"><div id='laverage'></div></td>
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</tr><tr>
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<th align="right">40 Frame Running Average Latency:</th>
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<td align="right"><div id='lrunning'></div></td>
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</tr><tr>
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<th align="right">Minimum Latency:</th>
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<td align="right"><div id='lmin'></div></td>
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</tr><tr>
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<th align="right">Maximum Latency:</th>
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<td align="right"><div id='lmax'></div></td>
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</tr>
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</table>
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<br>
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Messages:<br>
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<textarea id="messages" style="font-size: 9;" cols=80 rows=10></textarea>
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</body>
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<script>
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var host = null, port = null, sendDelay = 0, actualSendDelay,
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ws = null, send_ref = null,
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sent, received, latencies, ltotal, laverage, lrunning, lmin, lmax,
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run_length = 40,
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payload_size = 2000, payload,
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msg_cnt = 0, recv_seq = 0, send_seq = 0;
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Array.prototype.pushStr = function (str) {
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var n = str.length;
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for (var i=0; i < n; i++) {
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this.push(str.charCodeAt(i));
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}
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}
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function message(str) {
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console.log(str);
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cell = $D('messages');
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msg_cnt++;
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cell.innerHTML += msg_cnt + ": " + str + "\n";
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cell.scrollTop = cell.scrollHeight;
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}
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function add (x,y) {
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return parseInt(x,10)+parseInt(y,10);
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}
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function recvMsg(data) {
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//console.log(">> check_respond");
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var i, now, arr, first, last, arr, latency;
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now = (new Date()).getTime(); // Early as possible
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arr = ws.rQshiftBytes(ws.rQlen());
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first = String.fromCharCode(arr.shift());
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last = String.fromCharCode(arr.pop());
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if (first != "^") {
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message("Error: packet missing start char '^'");
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disconnect();
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return;
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}
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if (last != "$") {
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message("Error: packet missing end char '$'");
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disconnect();
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return;
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}
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arr = arr.map(function(num) {
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return String.fromCharCode(num);
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} ).join('').split(':');
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seq = arr[0];
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timestamp = parseInt(arr[1],10);
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rpayload = arr[2];
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if (seq != recv_seq) {
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message("Error: expected seq " + recv_seq + " but got " + seq);
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disconnect();
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return;
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}
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recv_seq++;
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if (payload !== rpayload) {
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message("Payload corrupt");
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disconnect();
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return;
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}
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received++;
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latency = now - timestamp;
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latencies.push(latency);
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if (latencies.length > run_length) {
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latencies.shift();
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}
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ltotal += latency;
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laverage = ltotal / received;
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lrunning = 0;
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for (var i=0; i < latencies.length; i++) {
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lrunning += latencies[i];
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}
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lrunning = lrunning / latencies.length;
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if (latency < lmin) {
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lmin = latency;
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}
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if (latency > lmax) {
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lmax = latency;
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}
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showStats();
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//console.log("<< check_respond");
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}
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function sendMsg() {
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var arr = [];
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if (! ws.flush() ) {
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message("WebSocket not ready, backing off");
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actualSendDelay = actualSendDelay * 2;
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send_ref = setTimeout(sendMsg, actualSendDelay);
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return false;
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} else {
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// Scale the delay down to the requested minimum
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if (actualSendDelay > sendDelay) {
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message("WebSocket ready, increasing presure");
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actualSendDelay = Math.max(actualSendDelay / 2, sendDelay);
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}
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}
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timestamp = (new Date()).getTime();
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arr.pushStr("^" + send_seq + ":" + timestamp + ":" + payload + "$");
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send_seq ++;
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ws.send(arr);
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sent++;
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showStats();
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send_ref = setTimeout(sendMsg, actualSendDelay);
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}
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function showStats() {
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$D('sent').innerHTML = sent;
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$D('received').innerHTML = received;
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$D('laverage').innerHTML = laverage.toFixed(2);
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$D('lrunning').innerHTML = lrunning.toFixed(2);
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$D('lmin').innerHTML = lmin.toFixed(2);
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$D('lmax').innerHTML = lmax.toFixed(2);
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}
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function init_ws() {
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console.log(">> init_ws");
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var scheme = "ws://";
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if ($D('encrypt').checked) {
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scheme = "wss://";
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}
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var uri = scheme + host + ":" + port;
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console.log("connecting to " + uri);
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ws = new Websock();
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ws.maxBufferedAmount = 5000;
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ws.open(uri);
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ws.on('message', function() {
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recvMsg();
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});
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ws.on('open', function() {
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send_ref = setTimeout(sendMsg, sendDelay);
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});
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ws.on('close', function(e) {
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disconnect();
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});
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ws.on('error', function(e) {
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message("Websock error: " + e);
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disconnect();
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});
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console.log("<< init_ws");
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}
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function connect() {
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console.log(">> connect");
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host = $D('host').value;
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port = $D('port').value;
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payload_size = parseInt($D('payload_size').value, 10);
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sendDelay = parseInt($D('sendDelay').value, 10);
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if ((!host) || (!port)) {
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console.log("must set host and port");
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return;
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}
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if (ws) {
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ws.close();
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}
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init_ws();
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// Populate payload data
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var numlist = []
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for (var i=0; i < payload_size; i++) {
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numlist.push( Math.floor(Math.random()*10) );
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}
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payload = numlist.join('');
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// Initialize stats
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sent = 0;
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received = 0;
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latencies = [];
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ltotal = 0;
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laverage = 0;
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lrunning = 0;
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lmin = 999999999;
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lmax = 0;
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actualSendDelay = sendDelay;
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$D('connectButton').value = "Stop";
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$D('connectButton').onclick = disconnect;
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console.log("<< connect");
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}
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function disconnect() {
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console.log(">> disconnect");
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if (ws) {
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ws.close();
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}
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if (send_ref) {
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clearInterval(send_ref);
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send_ref = null;
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}
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showStats(); // Final numbers
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recv_seq = 0;
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send_seq = 0;
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$D('connectButton').value = "Start";
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$D('connectButton').onclick = connect;
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console.log("<< disconnect");
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}
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window.onload = function() {
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console.log("onload");
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var url = document.location.href;
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$D('host').value = (url.match(/host=([^&#]*)/) || ['',window.location.hostname])[1];
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$D('port').value = (url.match(/port=([^&#]*)/) || ['',window.location.port])[1];
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$D('payload_size').value = payload_size;
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}
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</script>
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</html>
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