auth_request_set $headername1 $upstream_http_headername1;
auth_request_set $headervalue1 $upstream_http_headervalue1;
auth_request_set $headername2 $upstream_http_headername2;
auth_request_set $headervalue2 $upstream_http_headervalue2;
auth_request_set $headername3 $upstream_http_headername3;
auth_request_set $headervalue3 $upstream_http_headervalue3;
auth_request_set $headername4 $upstream_http_headername4;
auth_request_set $headervalue4 $upstream_http_headervalue4;
auth_request_set $headername5 $upstream_http_headername5;
auth_request_set $headervalue5 $upstream_http_headervalue5;
auth_request_set $headername6 $upstream_http_headername6;
auth_request_set $headervalue6 $upstream_http_headervalue6;
auth_request_set $headername7 $upstream_http_headername7;
auth_request_set $headervalue7 $upstream_http_headervalue7;
auth_request_set $headername8 $upstream_http_headername8;
auth_request_set $headervalue8 $upstream_http_headervalue8;
auth_request_set $headername9 $upstream_http_headername9;
auth_request_set $headervalue9 $upstream_http_headervalue9;
auth_request_set $headername10 $upstream_http_headername10;
auth_request_set $headervalue10 $upstream_http_headervalue10;
auth_request_set $headername11 $upstream_http_headername11;
auth_request_set $headervalue11 $upstream_http_headervalue11;
auth_request_set $headername12 $upstream_http_headername12;
auth_request_set $headervalue12 $upstream_http_headervalue12;
auth_request_set $headername13 $upstream_http_headername13;
auth_request_set $headervalue13 $upstream_http_headervalue13;
auth_request_set $headername14 $upstream_http_headername14;
auth_request_set $headervalue14 $upstream_http_headervalue14;
auth_request_set $headername15 $upstream_http_headername15;
auth_request_set $headervalue15 $upstream_http_headervalue15;
auth_request_set $lmcookie $upstream_http_cookie;
access_by_lua '
  i = 1
  ngx.req.set_header("Cookie",ngx.var.lmcookie)
  if ngx.var.lmremote_user ~= nil and ngx.var.lmremote_user ~= "" then
    while true do
      if ngx.var["headername"..i] ~= nil then
        ngx.req.set_header(ngx.var["headername"..i],ngx.var["headervalue"..i])
      else
        break
      end
      i = i +1
    end
  else
{% for header in llng_protected_headers %}
    ngx.req.set_header("{{ header }}",nil)
{% endfor %}
  end
';