app.js

const KEY = 'ntalk.sid', SECRET = 'ntalk';
var express = require('express')
  , load = require('express-load')
  , bodyParser = require('body-parser')
  , cookieParser = require('cookie-parser')
  , expressSession = require('express-session')
  , methodOverride = require('method-override')
  , compression = require('compression')
  , csurf = require('csurf')
  , error = require('./middlewares/error')
  , redisAdapter = require('socket.io-redis')
  , redisStore = require('connect-redis')(expressSession)
  , app = express()
  , server = require('http').Server(app)
  , io = require('socket.io')(server)
  , cookie = cookieParser(SECRET)
  , store = new redisStore({prefix: KEY})
  , mongoose = require('mongoose')
;
global.db = mongoose.connect('localhost/ntalk');
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.use(compression());
app.use(cookie);
app.use(expressSession({
  secret: SECRET,
  name: KEY,
  resave: true,
  saveUninitializaed: true,
  store: store
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(methodOverride('_method'));
app.use(express.static(__dirname + '/public', {
  maxAge: 36000000
}));
app.use(csurf());
app.use(function(req, res, next) {
  res.locals._csrf = req.csrfToken();
  next();
});
io.use(function(socket, next) {
  var data = socket.request;
  cookie(data, {}, function(err){
    var sessionID = data.signedCookies[KEY];
    store.get(sessionID, function(err, session) {
      if (err || !session) {
        return next(new Error('acesso negado'));
      } else {
        socket.handshake.session = session;
        return next();
      }
    })
  })
})
io.adapter(redisAdapter({host: 'localhost', port: 6379}));
load('models')
  .then('controllers')
  .then('routes')
  .into(app);
load('sockets')
  .into(io);

app.use(error.notFound);
app.use(error.serverError);
server.listen(3000, function(){
  console.log("Ntalk no ar.");
});