can you make a sse demo using nodejs?

[anlexN]

[rudolph9]

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

var clientId = 0;
var clients = {}; // <- Keep a map of attached clients

const server = http.createServer((req, res) => {
 req.socket.setTimeout(Number.MAX_VALUE);
 res.writeHead(200, {
   'Content-Type': 'text/event-stream', // <- Important headers
   'Cache-Control': 'no-cache',
   'Connection': 'keep-alive'
 });
 res.write('\n');
 (function (clientId) {
   clients[clientId] = res; // <- Add this client to those we consider "attached"
   req.on("close", function () {
     delete clients[clientId]
   }); // <- Remove this client when he disconnects
 })(++clientId)
});

setInterval(function () {
 var msg = Math.random();
 console.log("Clients: " + Object.keys(clients) + " <- " + msg);
 for (clientId in clients) {
   clients[clientId].write("data: " + msg + "\n\n"); // <- Push a message to a single attached client
 };
}, 2000);

server.listen(port, hostname, () => {
 console.log(`Server running at http://${hostname}:${port}/`);
});