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<div class="titlepage"><div><div><h4 class="title">
<a name="asio.reference.basic_socket.do_not_route"></a><a class="link" href="do_not_route.html" title="basic_socket::do_not_route">basic_socket::do_not_route</a>
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<p>
<span class="emphasis"><em>Inherited from socket_base.</em></span>
</p>
<p>
<a class="indexterm" name="id842336"></a>
Socket option to prevent routing, use local interfaces
only.
</p>
<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">implementation_defined</span> <span class="identifier">do_not_route</span><span class="special">;</span>
</pre>
<p>
Implements the SOL_SOCKET/SO_DONTROUTE socket option.
</p>
<a name="asio.reference.basic_socket.do_not_route.examples"></a><h6>
<a name="id842385"></a>
<a class="link" href="do_not_route.html#asio.reference.basic_socket.do_not_route.examples">Examples</a>
</h6>
<p>
Setting the option:
</p>
<pre class="programlisting"><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">udp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">);</span>
<span class="special">...</span>
<span class="identifier">asio</span><span class="special">::</span><span class="identifier">socket_base</span><span class="special">::</span><span class="identifier">do_not_route</span> <span class="identifier">option</span><span class="special">(</span><span class="keyword">true</span><span class="special">);</span>
<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>
</pre>
<p>
Getting the current option value:
</p>
<pre class="programlisting"><span class="identifier">asio</span><span class="special">::</span><span class="identifier">ip</span><span class="special">::</span><span class="identifier">udp</span><span class="special">::</span><span class="identifier">socket</span> <span class="identifier">socket</span><span class="special">(</span><span class="identifier">io_service</span><span class="special">);</span>
<span class="special">...</span>
<span class="identifier">asio</span><span class="special">::</span><span class="identifier">socket_base</span><span class="special">::</span><span class="identifier">do_not_route</span> <span class="identifier">option</span><span class="special">;</span>
<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>
<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">value</span><span class="special">();</span>
</pre>
<a name="asio.reference.basic_socket.do_not_route.requirements"></a><h6>
<a name="id842708"></a>
<a class="link" href="do_not_route.html#asio.reference.basic_socket.do_not_route.requirements">Requirements</a>
</h6>
<p>
<span class="bold"><strong>Header: </strong></span><code class="literal">asio/basic_socket.hpp</code>
</p>
<p>
<span class="bold"><strong>Convenience header: </strong></span><code class="literal">asio.hpp</code>
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 Christopher M. Kohlhoff<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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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