80 lines
5.9 KiB
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80 lines
5.9 KiB
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<title>basic_socket::linger</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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<a accesskey="p" href="keep_alive.html"><img src="../../../prev.png" alt="Prev"></a><a accesskey="u" href="../basic_socket.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="local_endpoint.html"><img src="../../../next.png" alt="Next"></a>
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<div class="section">
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<div class="titlepage"><div><div><h4 class="title">
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<a name="asio.reference.basic_socket.linger"></a><a class="link" href="linger.html" title="basic_socket::linger">basic_socket::linger</a>
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</h4></div></div></div>
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<p>
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<span class="emphasis"><em>Inherited from socket_base.</em></span>
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</p>
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<p>
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<a class="indexterm" name="asio.indexterm.basic_socket.linger"></a>
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Socket option to specify
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whether the socket lingers on close if unsent data is present.
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</p>
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<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <span class="identifier">linger</span><span class="special">;</span>
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</pre>
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<p>
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Implements the SOL_SOCKET/SO_LINGER socket option.
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</p>
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<h6>
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<a name="asio.reference.basic_socket.linger.h0"></a>
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<span><a name="asio.reference.basic_socket.linger.examples"></a></span><a class="link" href="linger.html#asio.reference.basic_socket.linger.examples">Examples</a>
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</h6>
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<p>
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Setting the option:
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</p>
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<pre class="programlisting"><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">tcp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">my_context</span><span class="special">);</span>
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<span class="special">...</span>
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<span class="identifier">asio</span><span class="special">::</span><span class="identifier">socket_base</span><span class="special">::</span><span class="identifier">linger</span> <span class="identifier">option</span><span class="special">(</span><span class="keyword">true</span><span class="special">,</span> <span class="number">30</span><span class="special">);</span>
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<span class="identifier">socket</span><span class="special">.</span><span class="identifier">set_option</span><span class="special">(</span><span class="identifier">option</span><span class="special">);</span>
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</pre>
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<p>
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Getting the current option value:
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</p>
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<pre class="programlisting"><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">tcp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">my_context</span><span class="special">);</span>
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<span class="special">...</span>
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<span class="identifier">asio</span><span class="special">::</span><span class="identifier">socket_base</span><span class="special">::</span><span class="identifier">linger</span> <span class="identifier">option</span><span class="special">;</span>
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<span class="identifier">socket</span><span class="special">.</span><span class="identifier">get_option</span><span class="special">(</span><span class="identifier">option</span><span class="special">);</span>
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<span class="keyword">bool</span> <span class="identifier">is_set</span> <span class="special">=</span> <span class="identifier">option</span><span class="special">.</span><span class="identifier">enabled</span><span class="special">();</span>
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<span class="keyword">unsigned</span> <span class="keyword">short</span> <span class="identifier">timeout</span> <span class="special">=</span> <span class="identifier">option</span><span class="special">.</span><span class="identifier">timeout</span><span class="special">();</span>
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</pre>
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<h6>
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<a name="asio.reference.basic_socket.linger.h1"></a>
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<span><a name="asio.reference.basic_socket.linger.requirements"></a></span><a class="link" href="linger.html#asio.reference.basic_socket.linger.requirements">Requirements</a>
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</h6>
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<p>
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<span class="emphasis"><em>Header: </em></span><code class="literal">asio/basic_socket.hpp</code>
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</p>
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<p>
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<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
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</p>
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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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