  Set to indicate what error occurred, if any.
              </p></dd>
</dl>
</div>
<h6>
<a name="boost_asio.reference.read_until.overload12.h1"></a>
          <span class="phrase"><a name="boost_asio.reference.read_until.overload12.return_value"></a></span><a class="link" href="overload12.html#boost_asio.reference.read_until.overload12.return_value">Return
          Value</a>
        </h6>
<p>
          The number of bytes in the streambuf's get area up to and including the
          delimiter. Returns 0 i