Set authorization in Node request.headers

I'm attempting to send a Passport-Local login request to the client side to be analyzed by Satellizer, and I would like the request from the server side to send an authorization token. Unfortunately, there is no key authorization in request.headers:

{ host: 'localhost:3000',
  connection: 'keep-alive',
  'cache-control': 'max-age=0',
  accept: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8' }

The login function redirects here, and this is where ensureAuthenticated() is called.

app.get('/main', ensureAuthenticated, function(req, res, next){
    res.render('main.ejs', { token: createSendToken(req.user, config.secret), id: req.user._id, username: req.user.username, authorization: req.user.authorization });
});

ensureAuthenticated() then analyzes the login request and makes sure the tokens match:

function ensureAuthenticated(req, res, next) {

  if (!req.headers.authorization) {
     return res.status(401).send({ message: 'Please make sure your request has an Authorization header' });
  }
  var token = req.headers.authorization.split(' ')[1];

  var payload = null;
  try {
    payload = jwt.decode(token, config.token_secret);
  }
  catch (err) {
    return res.status(401).send({ message: err.message });
  }

  if (payload.exp <= moment().unix()) {
    return res.status(401).send({ message: 'Token has expired' });
  }
  req.user = payload.sub;
  next();
}

It then redirects and shows the message

{ message: 'Please make sure your request has an Authorization header' }

How would I set an authorization key to request.headers?

To set a new header field in the request just access it directly, as the headers object looks like a normal hash table.

request.headers.authorization = value;