The HTML5 Server-Sent events specification is introduced "to enable servers to push data to Web pages over HTTP or using dedicated server-push protocols".
The spec can be found here.
npm install sse
var SSE = require('sse')
, http = require('http');
var server = http.createServer(function(req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('okay');
});
server.listen(8080, '127.0.0.1', function() {
var sse = new SSE(server);
sse.on('connection', function(client) {
client.send('hi there, '+ client.id +'!');
});
});Client code for the above server:
var es = new EventSource("/sse/test");
es.onmessage = function (event) {
console.log(event.data);
};
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent