f an error occurred.
        </p>
<h6>
<a name="boost_asio.reference.read_until.overload12.h2"></a>
          <span class="phrase"><a name="boost_asio.reference.read_until.overload12.remarks"></a></span><a class="link" href="overload12.html#boost_asio.reference.read_until.overload12.remarks">Remarks</a>
        </h6>
<p>
          After a successful read_until operation, the streambuf may contain additional
          data beyond the delimiter. An application will typically leave that data
          in the s