# File mod_docs/access.rb, line 353
  def filter_open(context, script_name, request, response, logger)
    for name, header_cond in @deny_cond_list
      if (request.has_header? name) then
        if (header_cond === request.header(name)) then
          raise HTTPError.new(403) # Forbidden
        end
      end
    end
    nil
  end