.posix__basic_descriptor.non_blocking_io.h1"></a>
          <span><a name="boost_asio.reference.posix__basic_descriptor.non_blocking_io.requirements"></a></span><a class="link" href="non_blocking_io.html#boost_asio.reference.posix__basic_descriptor.non_blocking_io.requirements">Requirements</a>
        </h6>
<p>
          <span class="bold"><strong>Header: </strong></span><code class="literal">boost/asio/posix/basic_descriptor.hpp</code>
        </p>
<p>
          <span class="bold"><strong>Convenience head