var express = require('express');
    var express = require('express');
    var app = express();
    // set up a route to redirect http to https
    app.use(function (req, res, next) {
    if (!/https/.test(req.protocol)) {
        res.redirect("https://" + req.headers.host + req.url);
    } else {
        return next();
    }
    });
    var webServer = app.listen(port, function () {
        console.log('Listening on port %d', webServer.address().port);
    });