title: CloudFront Lambda@Edge not seeing custom headers in viewer request
body: <p>I have a CloudFront distribution with a Lambda@Edge function which handles viewer request event. I want to send some custom headers and have them processed by Lambda@Edge, however Lambda function doesn't see them. For example I tried to send following headers:</p>
  <ul>
  <li>X-Abc-Me</li>
  <li>X-Some-Strange-Header</li>
  </ul>
  <p>In the event received by Lambda function above headers are not included in 'headers'.
  I've tried to look through CloudFront document but don't see any clue yet.
  Please help. Thanks a lot in advance.</p>