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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.InternetProtocol"></a><a class="link" href="InternetProtocol.html" title="Internet protocol requirements">Internet protocol
      requirements</a>
</h3></div></div></div>
<p>
        A type <code class="computeroutput">X</code> meets the <code class="computeroutput">InternetProtocol</code> requirements
        if it satisfies the requirements of <a class="link" href="AcceptableProtocol.html" title="Acceptable protocol requirements"><code class="computeroutput">AcceptableProtocol</code></a>,
        as well as the additional requirements listed below.
      </p>
<p>
        In the table below, <code class="computeroutput">a</code> denotes a (possibly const) value of type
        <code class="computeroutput">X</code>, and <code class="computeroutput">b</code> denotes a (possibly const) value of type
        <code class="computeroutput">X</code>.
      </p>
<div class="table">
<a name="boost_asio.reference.InternetProtocol.t0"></a><p class="title"><b>Table&#160;18.&#160;InternetProtocol requirements</b></p>
<div class="table-contents"><table class="table" summary="InternetProtocol requirements">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                <p>
                  expression
                </p>
              </th>
<th>
                <p>
                  return type
                </p>
              </th>
<th>
                <p>
                  assertion/note<br> pre/post-conditions
                </p>
              </th>
</tr></thead>
<tbody>
<tr>
<td>
                <p>
                  <code class="computeroutput">X::resolver</code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput">ip::basic_resolver&lt;X&gt;</code>
                </p>
              </td>
<td>
                <p>
                  The type of a resolver for the protocol.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput">X::v4()</code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput">X</code>
                </p>
              </td>
<td>
                <p>
                  Returns an object representing the IP version 4 protocol.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput">X::v6()</code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput">X</code>
                </p>
              </td>
<td>
                <p>
                  Returns an object representing the IP version 6 protocol.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput">a == b</code>
                </p>
              </td>
<td>
                <p>
                  convertible to <code class="computeroutput">bool</code>
                </p>
              </td>
<td>
                <p>
                  Returns <code class="computeroutput">true</code> if <code class="computeroutput">a</code> and <code class="computeroutput">b</code>
                  represent the same IP protocol version, otherwise <code class="computeroutput">false</code>.
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput">a != b</code>
                </p>
              </td>
<td>
                <p>
                  convertible to <code class="computeroutput">bool</code>
                </p>
              </td>
<td>
                <p>
                  Returns <code class="computeroutput">!(a == b)</code>.
                </p>
              </td>
</tr>
</tbody>
</table></div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2017 Christopher M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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