title: AWS Elastic Load Balancer not Forwarding HTTP Headers to EC2 Instance
body: <p>I'm currently running a Python Flask Application on Amazon Elastic Beanstalk. When I test the application, it all works fine locally (I used Postman to send the GET &amp; POST requests). However, on AWS, it doesn't work because the request that gets to my EC2 instances (behind the load balancer) does not include the <strong>Authorization</strong> header. It seems like the load balancer strips off the header. Is there something I'm doing wrong here?</p>
  
  <p>Here's a comparison of what I get when I print out the header locally and on Elastic Beanstalk.</p>
  
  <p><strong>Locally</strong></p>
  
  <p><code>[2017-07-04 13:18:14,650] [INFO] [common.decorators] Headers = Host: localhost:5000
  Connection: keep-alive
  Content-Length: 151
  User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36
  Cache-Control: no-cache
  Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
  Content-Type: application/json
  Authorization: Bearer ad9fd4d9-6ce6-497b-855a-dcebebdad65b
  Postman-Token: xxxxx
  Accept: */*
  Accept-Encoding: gzip, deflate, br
  Accept-Language: en-US,en;q=0.8</code></p>
  
  <p><strong>Elastic Beanstalk:</strong></p>
  
  <p><code>[2017-07-04 17:27:03,813] [DEBUG] [common.decorators] Headers = Accept-Language: en-US,en;q=0.8
  Accept: */*
  Host: dev.onetext.com
  X-Forwarded-For: 66.30.13.108
  Content-Type: application/json
  Postman-Token: xxxxx
  Connection: keep-alive
  Accept-Encoding: gzip, deflate, sdch, br
  X-Forwarded-Proto: https
  Cache-Control: no-cache
  X-Forwarded-Port: 443
  User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36</code></p>