"identifier">response_type</span> <span class="identifier">res</span><span class="special">;</span>
    <span class="identifier">ws</span><span class="special">.</span><span class="identifier">handshake</span><span class="special">(</span><span class="identifier">res</span><span class="special">,</span> <span class="string">"localhost"</span><span class="special">,</span> <span class="string">"/"</span><span class="special">,</span>
        <span class="special">[](</span><span class="identifier">request_ty