title: Morgan Logging - Is it possible to log User name from request header ? How?
body: <pre><code>app.use(morgan(function (tokens, req, res) {
  console.log(req)
  try {
      let logData = {
          morganLogStream: [
              tokens['date'](req, res),
              ' Type-', tokens.method(req, res, 'Type'),
              ' Url-', tokens.url(req, res).split('?')[0],
              ' Status-', tokens.status(req, res),
              ' Content_Length-', tokens.res(req, res, 'content-length'),
              ' Response_Time-', tokens['response-time'](req, res), 'ms',
          ].join('')
      }
  
  }))
  </code></pre>
  
  <p>I am using Basic Auth with kerberos. I can see authorization header but not able to fetch the value.</p>