var http = require('http'); var express = require('express'); var fs = require('fs'); var io = require('socket.io'); var crypto = require('crypto');
var app = express(); var staticDir = express.static; var server = http.createServer(app);
io = io(server);
var opts = {
port: process.env.PORT || 1948, baseDir : __dirname + '/../../'
};
io.on( 'connection', function( socket ) {
socket.on('multiplex-statechanged', function(data) { if (typeof data.secret == 'undefined' || data.secret == null || data.secret === '') return; if (createHash(data.secret) === data.socketId) { data.secret = null; socket.broadcast.emit(data.socketId, data); }; });
});
[ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) {
app.use('/' + dir, staticDir(opts.baseDir + dir));
});
app.get(“/”, function(req, res) {
res.writeHead(200, {'Content-Type': 'text/html'}); var stream = fs.createReadStream(opts.baseDir + '/index.html'); stream.on('error', function( error ) { res.write('<style>body{font-family: sans-serif;}</style><h2>reveal.js multiplex server.</h2><a href="/token">Generate token</a>'); res.end(); }); stream.on('readable', function() { stream.pipe(res); });
});
app.get(“/token”, function(req,res) {
var ts = new Date().getTime(); var rand = Math.floor(Math.random()*9999999); var secret = ts.toString() + rand.toString(); res.send({secret: secret, socketId: createHash(secret)});
});
var createHash = function(secret) {
var cipher = crypto.createCipher('blowfish', secret); return(cipher.final('hex'));
};
// Actually listen server.listen( opts.port || null );
var brown = '033[33m',
green = '\033[32m', reset = '\033[0m';
console.log( brown + “reveal.js:” + reset + “ Multiplex running on port ” + green + opts.port + reset );