Function at_mark

include/boost/asio/basic_socket.hpp:715–721

Determine whether the socket is at the out-of-band data mark. * This function is used to check whether the socket input is currently * positioned at the out-of-band data mark. * * @return A bool indicating whether the socket is at the out-of-band data * mark. * * @throws boost::system::system_error Thrown on failure. */

   * @throws boost::system::system_error Thrown on failure.
   */
  bool at_mark() const
  {
    boost::system::error_code ec;
    bool b = impl_.get_service().at_mark(impl_.get_implementation(), ec);
    boost::asio::detail::throw_error(ec, "at_mark");
    return b;
  }

  /// Determine whether the socket is at the out-of-band data mark.
  /**