ile-time feature.
          This adds an additional <code class="computeroutput"><span class="keyword">bool</span></code>
          template parameter to <a class="link" href="ref/boost__beast__websocket__stream.html" title="websocket::stream"><code class="computeroutput"><span class="identifier">websocket</span><span class="special">::</span><span class="identifier">stream</span></code></a> When <code class="computeroutput"><span class="identifier">deflateSupported</span></code>
          is <code class="c