ss="special">::</span><span class="identifier">is_mutable_body_writer</span></code></a> metafunction
        </li>
<li class="listitem">
          New <a class="link" href="ref/boost__beast__websocket__seed_prng.html" title="websocket::seed_prng"><code class="computeroutput"><span class="identifier">websocket</span><span class="special">::</span><span class="identifier">seed_prng</span></code></a> for manually providing
          entropy to the PRNG
        </li>
<li class="listitem">
          New <a class