A lot of room for improvement, but this is the engine powering: https://legionofevil.org and it uses nginx + websockets + ssl without any patches! here's the nginx conf: https://gist.github.com/octaflop/4991052

app.js

var express = require('express');
var app = express();
var server = require('http').createServer(app);
var io = require("socket.io").listen(server);
var redis = require('redis'),
  db = redis.createClient();

// Socket.io configuration
io.configure(function () {
  io.enable('browser client etag');
  io.set('transports', [
     'websocket', 'xhr-polling'
    //'xhr-polling' // for benchmarking
  ]);
});

// Docpad instance for static files
var docpadInstanceConfiguration = {
  serverExpress: app,
  serverHttp: server,
  middlewareStandard: false
};

var docpadInstance = require('docpad').createInstance(docpadInstanceConfiguration, function(err) {
  if (err) return console.log(err.stack);
  docpad.action('generate server watch', function(err){
    if (err) return console.log(err.stack);
  });
});

server.listen(3000);
app.enable('trust proxy'); // for nginx/express proxy magic

app.use(function(err, req, res, next) {
  console.error(err.stack);
  res.send(500, "Oops.");
});

var players = [];
var nextId = 0;

// Game server part

io.sockets.on('connection', function(socket) {
    var player;

    socket.on('logon', function(pos) {
        // Create the player
        player = { id: nextId++, x: pos.x, y: pos.y };

        // Send existing players to client
        socket.emit('players', players);

        // Send the new player to other clients
        socket.broadcast.emit('connected', player);

        // Add client to list of players
        players.push(player);
    });

    socket.on('move', function(data) {
        if (player) {
            player.x = data.x;
            player.y = data.y;

            // Broadcast position change to all other clients
            socket.broadcast.emit('moved', player);
        }
    });

    socket.on('disconnect', function() {
        players.splice(players.indexOf(player), 1);
        io.sockets.emit('disconnected', player);
    });

    socket.on('message', function(msg){
      socket.send(msg); // For latency checking
    });
});


app.get("/", function (req, res) {
  // res.send(req.online.length + ' users online');
  res.sendfile(__dirname + "/dist" + "/index.html");
});

app.get("/about/", function (req, res) {
  // res.send(req.online.length + ' users online');
  res.sendfile(__dirname + "/out" + "/about.html");
});

app.get("/blog/", function (req, res) {
  // res.send(req.online.length + ' users online');
  res.sendfile(__dirname + "/out/blog" + "/index.html");
});

var usernames = {};

app.use(express.logger());
app.use('/blog', express.static(__dirname + '/out/blog'));
app.use('/', express.static(__dirname + '/dist'));
console.log('listening on port 3000');