1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Internet protocol requirements</title> 5<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../reference.html" title="Reference"> 9<link rel="prev" href="HandshakeHandler.html" title="SSL handshake handler requirements"> 10<link rel="next" href="IoControlCommand.html" title="I/O control command requirements"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 15<td align="center"><a href="../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="HandshakeHandler.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="IoControlCommand.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="boost_asio.reference.InternetProtocol"></a><a class="link" href="InternetProtocol.html" title="Internet protocol requirements">Internet protocol 28 requirements</a> 29</h3></div></div></div> 30<p> 31 A type <code class="computeroutput">X</code> meets the <code class="computeroutput">InternetProtocol</code> requirements 32 if it satisfies the requirements of <a class="link" href="AcceptableProtocol.html" title="Acceptable protocol requirements"><code class="computeroutput">AcceptableProtocol</code></a>, 33 as well as the additional requirements listed below. 34 </p> 35<p> 36 In the table below, <code class="computeroutput">a</code> denotes a (possibly const) value of type 37 <code class="computeroutput">X</code>, and <code class="computeroutput">b</code> denotes a (possibly const) value of type 38 <code class="computeroutput">X</code>. 39 </p> 40<div class="table"> 41<a name="boost_asio.reference.InternetProtocol.t0"></a><p class="title"><b>Table 19. InternetProtocol requirements</b></p> 42<div class="table-contents"><table class="table" summary="InternetProtocol requirements"> 43<colgroup> 44<col> 45<col> 46<col> 47</colgroup> 48<thead><tr> 49<th> 50 <p> 51 expression 52 </p> 53 </th> 54<th> 55 <p> 56 return type 57 </p> 58 </th> 59<th> 60 <p> 61 assertion/note<br> pre/post-conditions 62 </p> 63 </th> 64</tr></thead> 65<tbody> 66<tr> 67<td> 68 <p> 69 <code class="computeroutput">X::resolver</code> 70 </p> 71 </td> 72<td> 73 <p> 74 <code class="computeroutput">ip::basic_resolver<X></code> 75 </p> 76 </td> 77<td> 78 <p> 79 The type of a resolver for the protocol. 80 </p> 81 </td> 82</tr> 83<tr> 84<td> 85 <p> 86 <code class="computeroutput">X::v4()</code> 87 </p> 88 </td> 89<td> 90 <p> 91 <code class="computeroutput">X</code> 92 </p> 93 </td> 94<td> 95 <p> 96 Returns an object representing the IP version 4 protocol. 97 </p> 98 </td> 99</tr> 100<tr> 101<td> 102 <p> 103 <code class="computeroutput">X::v6()</code> 104 </p> 105 </td> 106<td> 107 <p> 108 <code class="computeroutput">X</code> 109 </p> 110 </td> 111<td> 112 <p> 113 Returns an object representing the IP version 6 protocol. 114 </p> 115 </td> 116</tr> 117<tr> 118<td> 119 <p> 120 <code class="computeroutput">a == b</code> 121 </p> 122 </td> 123<td> 124 <p> 125 convertible to <code class="computeroutput">bool</code> 126 </p> 127 </td> 128<td> 129 <p> 130 Returns <code class="computeroutput">true</code> if <code class="computeroutput">a</code> and <code class="computeroutput">b</code> 131 represent the same IP protocol version, otherwise <code class="computeroutput">false</code>. 132 </p> 133 </td> 134</tr> 135<tr> 136<td> 137 <p> 138 <code class="computeroutput">a != b</code> 139 </p> 140 </td> 141<td> 142 <p> 143 convertible to <code class="computeroutput">bool</code> 144 </p> 145 </td> 146<td> 147 <p> 148 Returns <code class="computeroutput">!(a == b)</code>. 149 </p> 150 </td> 151</tr> 152</tbody> 153</table></div> 154</div> 155<br class="table-break"> 156</div> 157<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 158<td align="left"></td> 159<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 160 Kohlhoff<p> 161 Distributed under the Boost Software License, Version 1.0. (See accompanying 162 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 163 </p> 164</div></td> 165</tr></table> 166<hr> 167<div class="spirit-nav"> 168<a accesskey="p" href="HandshakeHandler.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="IoControlCommand.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 169</div> 170</body> 171</html> 172
