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nsse

v0.0.0

Published

Server-Sent Events for Node.js

Downloads

2

Readme

Server Sent Events for Node.js

With built in channels

Spec: http://dev.w3.org/html5/eventsource/

Install

npm install nsse

Usage

var ServerSent = require('nsse')
   , http = require('http')
   , os = require('os')

var server = http.createServer(function(req, res){
    res.end('Server Sent Evetns')
})

server.listen(8100)


var ss = new ServerSent(server, /* { heartbeat: 5*1000 } */) // default for 10 secs

var channel = ss.of('/sse') // like socket.io

channel.on('connection', function (socket){
	socket.event('firstevnt')
	socket.end('end of event')

	socket.event('test')
	socket.write('this is a test')
	socket.json({
		serverDate: +new Date,
		loadavg: os.loadavg()
	})

	socket.send('yetAnotherEvent', 'data for this event')

	setInterval(function (){
		socket.json({
			serverDate: +new Date,
			loadavg: os.loadavg()
		})
	}, 5000)
})

Client:

<html>
	<body>
		<h1> Server Sent Evetns</h1>

		<script type="text/javascript">
		var source = new EventSource('/sse')

		source.addEventListener('firstevnt', function (ping){
			console.log('frst:', ping.data)
		})

		source.addEventListener('test', function (ev){
			console.log('DATA:', JSON.parse(ev.data))
		})

		source.addEventListener('heartbeat', function (ev){
			console.log('heartbeat ->', ev.data)
		})

		</script>
	</body>
</html>

Other libraries

For the browser:

-- jQuery EventSource by Rick Waldron

License

Alejandro Morales (c) MIT 2012