180 lines
7.6 KiB
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180 lines
7.6 KiB
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<html>
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<title>Protocol requirements</title>
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../asio.png"></td></tr></table>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="asio.reference.Protocol"></a><a class="link" href="Protocol.html" title="Protocol requirements">Protocol requirements</a>
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</h3></div></div></div>
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<p>
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A type <code class="computeroutput"><span class="identifier">X</span></code> meets the <code class="computeroutput"><span class="identifier">Protocol</span></code> requirements if it satisfies the
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requirements of <code class="computeroutput"><span class="identifier">Destructible</span></code>
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(C++Std [destructible]), <code class="computeroutput"><span class="identifier">CopyConstructible</span></code>
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(C++Std [copyconstructible]), and <code class="computeroutput"><span class="identifier">CopyAssignable</span></code>
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(C++Std [copyassignable]), as well as the additional requirements listed
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below.
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</p>
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<p>
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No copy or move operation of the type <code class="computeroutput"><span class="identifier">X</span></code>
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shall exit via an exception.
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</p>
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<div class="table">
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<a name="asio.reference.Protocol.t0"></a><p class="title"><b>Table 25. Protocol requirements</b></p>
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<div class="table-contents"><table class="table" summary="Protocol requirements">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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expression
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</p>
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</th>
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<th>
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<p>
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return type
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</p>
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</th>
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<th>
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<p>
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assertion/note<br> pre/post-conditions
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</p>
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</th>
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</tr></thead>
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<tbody><tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">X</span><span class="special">::</span><span class="identifier">endpoint</span></code>
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</p>
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</td>
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<td>
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<p>
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type meeting <a class="link" href="Endpoint.html" title="Endpoint requirements">endpoint</a>
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requirements
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</p>
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</td>
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<td>
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</td>
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</tr></tbody>
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</table></div>
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</div>
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<br class="table-break"><p>
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In the table below, <code class="computeroutput"><span class="identifier">a</span></code> denotes
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a (possibly const) value of type <code class="computeroutput"><span class="identifier">X</span></code>.
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</p>
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<div class="table">
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<a name="asio.reference.Protocol.t1"></a><p class="title"><b>Table 26. Protocol requirements for extensible implementations</b></p>
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<div class="table-contents"><table class="table" summary="Protocol requirements for extensible implementations">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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expression
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</p>
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</th>
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<th>
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<p>
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return type
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</p>
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</th>
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<th>
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<p>
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assertion/note<br> pre/post-conditions
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">a</span><span class="special">.</span><span class="identifier">family</span><span class="special">()</span></code>
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</p>
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</td>
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<td>
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<p>
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<code class="computeroutput"><span class="keyword">int</span></code>
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</p>
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</td>
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<td>
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<p>
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Returns a value suitable for passing as the <span class="emphasis"><em>domain</em></span>
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argument to <span class="emphasis"><em>POSIX</em></span> <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/socket.html" target="_top"><code class="computeroutput"><span class="identifier">socket</span><span class="special">()</span></code></a>
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(or equivalent).
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">a</span><span class="special">.</span><span class="identifier">type</span><span class="special">()</span></code>
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</p>
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</td>
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<td>
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<p>
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<code class="computeroutput"><span class="keyword">int</span></code>
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</p>
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</td>
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<td>
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<p>
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Returns a value suitable for passing as the <span class="emphasis"><em>type</em></span>
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argument to <span class="emphasis"><em>POSIX</em></span> <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/socket.html" target="_top"><code class="computeroutput"><span class="identifier">socket</span><span class="special">()</span></code></a>
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(or equivalent).
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">a</span><span class="special">.</span><span class="identifier">protocol</span><span class="special">()</span></code>
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</p>
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</td>
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<td>
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<p>
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<code class="computeroutput"><span class="keyword">int</span></code>
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</p>
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</td>
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<td>
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<p>
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Returns a value suitable for passing as the <span class="emphasis"><em>protocol</em></span>
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argument to <span class="emphasis"><em>POSIX</em></span> <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/socket.html" target="_top"><code class="computeroutput"><span class="identifier">socket</span><span class="special">()</span></code></a>
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(or equivalent).
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<br class="table-break">
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</div>
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<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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>)
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</p>
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</div>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="ProtoAllocator.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="RangeConnectHandler.html"><img src="../../next.png" alt="Next"></a>
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