n to determine if the request should be routed to an instance
        of <a class="link" href="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>.
      </p>
<h5>
<a name="beast.ref.boost__beast__websocket__is_upgrade.h2"></a>
        <span class="phrase"><a name="beast.ref.boost__beast__websocket__is_upgrade.example"></a></span><a class="link" h