an HTTP request message.</span>
<span class="keyword">class</span> <span class="identifier">_http_request</span> <span class="identifier">final</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">http</span><span class="special">::</span><span class="identifier">details</span><span class="special">::</span><span class="identifier">http_msg_base</span><span class="special">,</span> <span class="keyword">public</span> <span class="identifier">std</span><span clas