gistfile1.txt

  upstream ze-backend {
    server backend.server.local:7500 fail_timeout=0;
  }

  location /stuff-proxied-to-backend {

    # Tried this
    max_ranges 0;

    try_files $uri @ze-backend;
  }


  location @ze-backend  {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    
    # And tried this (and both)
    proxy_pass_request_body off;
    proxy_set_header Content-Length 0;
    max_ranges 0;

    proxy_pass http://ze-backend;
  }