ject.</em></span>
        </p>
<p>
          <a class="indexterm" name="idp42613280"></a> 
The underlying implementation type of I/O
          object.
        </p>
<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">service_type</span><span class="special">::</span><span class="identifier">implementation_type</span> <span class="identifier">implementation_type</span><span class="special">;</span>
</pre>
<h6>
<a name="boost_asio.reference.basic_socket.implementation_type