request_headers:
  ## do not pass Accept-Encoding to backend
  Accept-Encoding: ""
  ## '$req_accept' is defined in /angie/autoconf.dist/http-request-headers-basic.conf.j2
  Accept: '$req_accept'
  ## '$req_connection' is defined in /angie/autoconf.dist/http-request-headers-basic.conf.j2
  Connection: '$req_connection'
  Upgrade: '$http_upgrade'
  Early-Data: '$ssl_early_data'
  ## '$req_user_agent' is defined in /angie/autoconf.dist/http-request-headers-basic.conf.j2
  User-Agent: '$req_user_agent'