upgrade to reveal.js-3.3.0
diff --git a/inst/reveal.js-3.3.0/plugin/multiplex/index.js b/inst/reveal.js-3.3.0/plugin/multiplex/index.js
new file mode 100644
index 0000000..8195f04
--- /dev/null
+++ b/inst/reveal.js-3.3.0/plugin/multiplex/index.js
@@ -0,0 +1,64 @@
+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 );
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