Fixed background update with "if". Cloned subrequests should inherit r->content_handler. This way they will be able to use the same location configuration as the original request if there are "if" directives in the configuration. Without r->content_handler inherited, the following configuration tries to access a static file in the update request: location / { set $true 1; if ($true) { # nothing } proxy_pass http://backend; proxy_cache one; proxy_cache_use_stale updating; proxy_cache_background_update on; } See http://mailman.nginx.org/pipermail/nginx/2017-February/053019.html for initial report.

uwsgi_param  QUERY_STRING       $query_string;
uwsgi_param  REQUEST_METHOD     $request_method;
uwsgi_param  CONTENT_TYPE       $content_type;
uwsgi_param  CONTENT_LENGTH     $content_length;

uwsgi_param  REQUEST_URI        $request_uri;
uwsgi_param  PATH_INFO          $document_uri;
uwsgi_param  DOCUMENT_ROOT      $document_root;
uwsgi_param  SERVER_PROTOCOL    $server_protocol;
uwsgi_param  REQUEST_SCHEME     $scheme;
uwsgi_param  HTTPS              $https if_not_empty;

uwsgi_param  REMOTE_ADDR        $remote_addr;
uwsgi_param  REMOTE_PORT        $remote_port;
uwsgi_param  SERVER_PORT        $server_port;
uwsgi_param  SERVER_NAME        $server_name;