an class="identifier">utility</span><span class="special">::</span><span class="identifier">string_t</span> <span class="special">&amp;</span><span class="identifier">content_type</span> <span class="special">=</span> <span class="identifier">_XPLATSTR</span><span class="special">(</span><span class="string">"application/octet-stream"</span><span class="special">));</span>

    <span class="comment">/// Defines a stream that will be relied on to hold the body of the HTTP response message that</span>
    <sp