app.js

var http = require('http'),
    fs = require('fs'),
    url = require('url'),
    mime = require('mime'),
    domain = require('domain');

var server = http.createServer(function (req, res) {
  var uri = url.parse(req.url, true),
      filename = __dirname + '/public' + uri.pathname;

  var requestDomain = domain.create();
  requestDomain.on('error', function (err) {
    console.error('requestDomain: %s %j', req.url, err);
    if (err.code === 'ENOENT') {
      res.writeHead(404);
      res.end('Not Found');
    } else {
      res.writeHead(500);
      res.end('Internal Server Error');
    }
  });

  requestDomain.run(function () {
    res.writeHead(200, { 'Content-Type': mime.lookup(filename) });
    fs.createReadStream(filename).pipe(res);
  });
});

process.on('uncaughtException', function (err) {
  if (err && err.domain) return;
  console.error('uncaughtException: %j', err);
  process.exit(1);
});

server.listen(1337, function () {
  console.log('nstatic server listening on port %d', server.address().port);
});