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November 6, 2015 22:42
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Quick example of server side events in nodejs
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js'></script> | |
| <script src='http://jquery-json.googlecode.com/files/jquery.json-2.2.min.js'></script> | |
| <script> | |
| var source = new EventSource('/streeeem'); | |
| source.addEventListener('message', function(e) { | |
| console.log(e); | |
| $('ul').append('<li>' + e.data + ' (message id: ' + e.lastEventId + ')</li>'); | |
| }, false); | |
| </script> | |
| </head> | |
| <body> | |
| <ul></ul> | |
| </body> | |
| </html> |
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| { | |
| "version": "0.0.0", | |
| "dependencies": { | |
| "express": "latest" | |
| } | |
| } |
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| var express = require('express'); | |
| var http = require('http'); | |
| var app = express(); | |
| app.get('/', function(req, res){ | |
| res.sendFile(__dirname + '/public/index.html'); | |
| }); | |
| app.get('/streeeem', function(req, res) { | |
| console.log('hey there, got some streeem'); | |
| req.socket.setTimeout(Number.MAX_VALUE); | |
| res.writeHead(200, { | |
| 'Content-Type': 'text/event-stream', | |
| 'Cache-Control': 'no-cache', | |
| 'Connection': 'keep-alive' | |
| }); | |
| res.write('\n'); | |
| var cnt = 0; | |
| setInterval(function() { | |
| res.write('id: ' + (cnt++) + '\n'); | |
| res.write("data: " + "message" + '\n\n'); | |
| }, 2000) | |
| }); | |
| http.createServer(app).listen(process.env.PORT || 8080, function() { | |
| console.log('Listening on %d', this.address().port); | |
| }); |
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