entifier">stream</span><span class="special">::</span><span class="identifier">auto_fragment</span></code></a> option is set, the
          message will be split into one or more frames as necessary. The actual
          payload contents sent may be transformed as per the WebSocket protocol
          settings.
        </p>
<h6>
<a name="beast.ref.boost__beast__websocket__stream.async_write.h2"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__websocket__stream.async_write.parameters"></a>