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diff --git a/testing/xpcshell/node-ws/examples/server-stats/public/index.html b/testing/xpcshell/node-ws/examples/server-stats/public/index.html
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Server stats</title>
+ <style>
+ table, td {
+ border: 1px solid #333;
+ }
+
+ thead {
+ background-color: #333;
+ color: #fff;
+ }
+ </style>
+ </head>
+ <body>
+ <h1>Server stats</h1>
+ <table>
+ <thead>
+ <tr>
+ <th colspan="2">Memory usage</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>RSS</td>
+ <td id="rss"></td>
+ </tr>
+ <tr>
+ <td>Heap total</td>
+ <td id="heapTotal"></td>
+ </tr>
+ <tr>
+ <td>Heap used</td>
+ <td id="heapUsed"></td>
+ </tr>
+ <tr>
+ <td>External</td>
+ <td id="external"></td>
+ </tr>
+ </tbody>
+ </table>
+ <script>
+ (function() {
+ const rss = document.getElementById('rss');
+ const heapTotal = document.getElementById('heapTotal');
+ const heapUsed = document.getElementById('heapUsed');
+ const external = document.getElementById('external');
+ const ws = new WebSocket(`ws://${location.host}`);
+
+ ws.onmessage = function(event) {
+ const data = JSON.parse(event.data);
+
+ rss.textContent = data.rss;
+ heapTotal.textContent = data.heapTotal;
+ heapUsed.textContent = data.heapUsed;
+ external.textContent = data.external;
+ };
+ })();
+ </script>
+ </body>
+</html>