dart - How do I redirect http request to https in Redstone? -

in expressjs, can

app.use(function(req, res, next) {     if((!req.secure) && (req.get('x-forwarded-proto') !== 'https')) {         res.redirect('https://' + req.get('host') + req.url);         console.log('redirected http request https');     } else {         next();     } }); 

to redirect http request https.

how do in readstone?

i tried following, not work.

@app.route('/') adlmain() {   if (app.request.requesteduri.scheme != 'https') {     var httpsurl = app.request.requesteduri.replace(scheme:   'https').tostring();     app.redirect(httpsurl);   }   return new file('build/web/index.html'); }