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          basic_raw_socket::at_mark (1 of 2 overloads)</a>
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<p>
            <span class="emphasis"><em>Inherited from basic_socket.</em></span>
          </p>
<p>
            Determine whether the socket is at the out-of-band data mark.
          </p>
<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>
</pre>
<p>
            This function is used to check whether the socket input is currently
            positioned at the out-of-band data mark.
          </p>
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            <a class="link" href="overload1.html#boost_asio.reference.basic_raw_socket.at_mark.overload1.return_value">Return
            Value</a>
          </h6>
<p>
            A bool indicating whether the socket is at the out-of-band data mark.
          </p>
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            <a class="link" href="overload1.html#boost_asio.reference.basic_raw_socket.at_mark.overload1.exceptions">Exceptions</a>
          </h6>
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<p class="title"><b></b></p>
<dl>
<dt><span class="term">boost::system::system_error</span></dt>
<dd><p>
                Thrown on failure.
              </p></dd>
</dl>
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<td align="right"><div class="copyright-footer">Copyright © 2003 - 2008 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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