# File lib/Dnsruby/Resolver.rb, line 274
    def close
      @mutex.synchronize {
        @query_list.each do |client_query_id, values|
          msg, client_queue, q, outstanding = values
          send_result_and_close(client_queue, client_query_id, q, nil, OtherResolvError.new("Resolver closing!"))
        end
      }
    end