boost_1_68"></a></span><a class="link" href="release_notes.html#beast.release_notes.boost_1_68">Boost
      1.68</a>
    </h4>
<p>
      This version fixes a missing executor work guard in all composed operations
      used in the implementation. Users who are experiencing crashes related to asynchronous
      completion handlers are encouraged to upgrade. Also included is an improved
      mechanism for generating random numbers used to mask outgoing websocket frames
      when operating in the client mode