em></span></a><span class="special">&gt;</span>
<span class="identifier">async_write_some</span><span class="special">(</span>
    <span class="keyword">bool</span> <span class="identifier">fin</span><span class="special">,</span>
    <span class="identifier">ConstBufferSequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">buffers</span><span class="special">,</span>
    <span class="identifier">WriteHandler</span><span class="special">&amp;&amp;</span