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<a name="boost_asio.reference.ip__tcp.protocol"></a><a class="link" href="protocol.html" title="ip::tcp::protocol">ip::tcp::protocol</a>
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<p>
          <a class="indexterm" name="boost_asio.indexterm.ip__tcp.protocol"></a> 
Obtain an identifier
          for the protocol.
        </p>
<pre class="programlistin