ial">()</span> <span class="keyword">const</span><span class="special">;</span>
</pre>
<p>
            This function returns a const reference to the lowest layer in a stack
            of layers. Since a <a class="link" href="../../basic_socket.html" title="basic_socket"><code class="computeroutput"><span class="identifier">basic_socket</span></code></a> cannot contain
            any further layers, it simply returns a reference to itself.
          </p>
<h6>
<a name="boost_asio.reference.basic_seq_packet