 name="beast.ref.boost__beast__http__read_header.overload1.remarks"></a></span><a class="link" href="overload1.html#beast.ref.boost__beast__http__read_header.overload1.remarks">Remarks</a>
        </h6>
<p>
          The function returns the total number of bytes transferred from the stream.
          This may be zero for the case where there is sufficient pre-existing message
          data in the dynamic buffer. The implementation will call <a class="link" href="../boost__beast__http__basic_parser/eager.h