var express = require('express')
, http = require('http')
, app = express()
, server = http.createServer(app);

app.get('/', function(req, res) {
  res.sendfile(__dirname + '/index.html');
});

app.listen(8090);
console.log("started...");
app.close();

app.close();
    ^
TypeError: Object function app(req, res){ app.handle(req, res); } has no method 'close'

process.exit(code=0)

process.on('SIGTERM', function () {
  app.close();
});