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27 <a name="boost_asio.reference.basic_socket.at_mark.overload1"></a><a class="link" href="overload1.html" title="basic_socket::at_mark (1 of 2 overloads)">basic_socket::at_mark
28           (1 of 2 overloads)</a>
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30 <p>
31             Determine whether the socket is at the out-of-band data mark.
32           </p>
33 <pre class="programlisting"><span class="keyword">bool</span> <span class="identifier">at_mark</span><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
34 </pre>
35 <p>
36             This function is used to check whether the socket input is currently
37             positioned at the out-of-band data mark.
38           </p>
39 <h6>
40 <a name="boost_asio.reference.basic_socket.at_mark.overload1.h0"></a>
41             <span class="phrase"><a name="boost_asio.reference.basic_socket.at_mark.overload1.return_value"></a></span><a class="link" href="overload1.html#boost_asio.reference.basic_socket.at_mark.overload1.return_value">Return
42             Value</a>
43           </h6>
44 <p>
45             A bool indicating whether the socket is at the out-of-band data mark.
46           </p>
47 <h6>
48 <a name="boost_asio.reference.basic_socket.at_mark.overload1.h1"></a>
49             <span class="phrase"><a name="boost_asio.reference.basic_socket.at_mark.overload1.exceptions"></a></span><a class="link" href="overload1.html#boost_asio.reference.basic_socket.at_mark.overload1.exceptions">Exceptions</a>
50           </h6>
51 <div class="variablelist">
52 <p class="title"><b></b></p>
53 <dl class="variablelist">
54 <dt><span class="term">boost::system::system_error</span></dt>
55 <dd><p>
56                   Thrown on failure.
57                 </p></dd>
58 </dl>
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63 <td align="right"><div class="copyright-footer">Copyright &#169; 2003-2014 Christopher M. Kohlhoff<p>
64         Distributed under the Boost Software License, Version 1.0. (See accompanying
65         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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