node_modules/ws/examples/serverstats/server.js


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var WebSocketServer = require('../../').Server
  , http = require('http')
  , express = require('express')
  , app = express.createServer();

app.use(express.static(__dirname + '/public'));
app.listen(8080);

var wss = new WebSocketServer({server: app});
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);
  })
});