Fish Wang says to YSITD
但是看到node.js的sse範例...差距真不是一般大 app.get('/connect', function(req, res){     res.writeHead(200, {       'Connection': 'keep-alive',       'Content-Type': 'text/event-stream',       'Cache-Control': 'no-cache'     });     setInterval(function(){       console.log('writing ' + testdata);       res.write('data: {"msg": '+ testdata +'}\n\n');     }, 1000); });