n class="identifier">descriptor_base</span><span class="special">::</span><span class="identifier">non_blocking_io</span> <span class="identifier">command</span><span class="special">(</span><span class="keyword">true</span><span class="special">);</span>
<span class="identifier">descriptor</span><span class="special">.</span><span class="identifier">io_control</span><span class="special">(</span><span class="identifier">command</span><span class="special">);</span>
</pre>
<h6>
<a name="boost_asio.reference