Nodejitsu Socket.io on express.js

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var server = http.createServer(app).listen(app.get('port'), function() {
  console.log("Express server listening on port " + app.get('port'));
});

// Socket.io
var io = require('socket.io').listen(server);

io.sockets.on('connection', function (socket) {
  socket.on('new message', function (data) {
    io.sockets.emit('update', { update: data.message });
  });
  socket.on('save', function (data) {
    console.log("Save this to CouchDB", data.array);
  });
});