         When an asynchronous read function receives a control frame, the control
          callback is invoked in the same manner as that used to invoke the final
          completion handler of the corresponding read function.
        </p></td></tr>
</table></div>
<h5>
<a name="beast.using_websocket.control_frames.h1"></a>
        <span class="phrase"><a name="beast.using_websocket.control_frames.close_frames"></a></span><a class="link" href="control_frames.html#beast.using_websocket.control_frames.close_