Simple Way to Implement Server Sent Events in Node.js?

Question

I\'ve looked around and it seems as if all the ways to implement SSEs in Node.js are through more complex code, but it seems like there should be an easier way to send and recei

Answer 1

**client.js**

var eventSource = new EventSource("/route/events");
eventSource.addEventListner("ping", function(e){log(e.data)});

//if no events specified
eventSource.addEventListner("message", function(e){log(e.data)});

**server.js**

http.createServer((req, res)=>{

    if(req.url.indexOf("/route/events")>=){

      res.setHeader('Connection', 'keep-alive');

      res.setHeader("Cache-Control", "no-cache");

      res.setHeader("Content-Type", "text/event-stream");

      let event = "event: ping";

      let id = `id: ${Date.now()}`;

      let data = {
         message:`hello @${new Date().toString()}`
      }

      data = "data: "+JSON.stringify(data);

      res.end(`${event}\n${id}\n${data}\n\n`);
   }
}).listen(PORT)