amlisting"><span class="keyword">namespace</span> <span class="identifier">details</span> <span class="special">{</span>

<span class="keyword">class</span> <span class="identifier">http_msg_base</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
    <span class="identifier">http_headers</span> <span class="special">&amp;</span><span class="identifier">headers</span><span class="special">()</span> <span class="special">{</span> <span class="keyword">retur