var WebSocketServer = require('../../').Server , http = require('http') , express = require('express') , app = express(); app.use(express.static(__dirname + '/public')); var server = http.createServer(app); server.listen(8080); var wss = new WebSocketServer({server: server}); wss.on('connection', function(ws) { var id = setInterval(function() { ws.send(JSON.stringify(process.memoryUsage()), function() { /* ignore errors */ }); }, 100); console.log('started client interval'); ws.on('close', function() { console.log('stopping client interval'); clearInterval(id); }); });