an class="identifier">basic_parser</span></code></a>. Beast comes with the
        derived instance <a class="link" href="../ref/boost__beast__http__parser.html" title="http::parser"><code class="computeroutput"><span class="identifier">parser</span></code></a> which creates complete <a class="link" href="../ref/boost__beast__http__message.html" title="http::message"><code class="computeroutput"><span class="identifier">message</span></code></a>
        objects using the <a class="link" href="../ref/boost__