Sol websockets reloj
De wikiserver
CLIENTE
<!DOCTYPE html>
<html>
<head>
<script src="./node_modules/socket.io-client/dist/socket.io.js"></script>
<script>
//tenemos en http://localhost:8080 y escuchamos el evento messages.
var socket = io.connect('http://localhost:8080', { 'forceNew': true });
socket.on('time', function(data) {
addMessage(data.time);
});
function addMessage(message) {
var text = document.createTextNode(message),
el = document.createElement('li'),
messages = document.getElementById('messages');
el.appendChild(text);
messages.appendChild(el);
}
</script>
</head>
<body>
<h1>MI RELOJ</h1>
<div id="messages"></div>
<body/>
</html>SERVIDOR
var express = require('express');
var path = require('path');
var app = express();
var server = require('http').Server(app);
var io = require('socket.io').listen(server);
//Pondremos el servidor a escuchar en localhost con el puerto 8080
server.listen(8080, function() {
console.log('Servidor corriendo en http://localhost:8080');
});
app.use(express.static(path.join(__dirname, '/')));
// connection
// Send current time to all connected clients
function sendTime() {
io.sockets.emit('time', { time: new Date().toJSON() });
}
// Send current time every 10 secs
setInterval(sendTime, 1000);
// otra forma
/*io.on('connection', function(socket) {
console.log('Un cliente se ha conectado');
// connection
// Send current time to all connected clients
function sendTime() {
io.sockets.emit('time', { time: new Date().toJSON() });
}
// Send current time every 10 secs
setInterval(sendTime, 1000);
});
*/
