cial">()</span></code>
          virtual function.
        </p>
<p>
          Note that any file descriptors accessible via Boost.Asio's public API (e.g.
          the descriptors underlying <code class="computeroutput"><span class="identifier">basic_socket</span><span class="special">&lt;&gt;</span></code>, <code class="computeroutput"><span class="identifier">posix</span><span class="special">::</span><span class="identifier">stream_descriptor</span></code>,
          etc.) are not altered during a fork. 