Method async_read_some

test/read_until.cpp:81–88

  template <typename Mutable_Buffers, typename Handler>
  void async_read_some(const Mutable_Buffers& buffers, Handler handler)
  {
    size_t bytes_transferred = read_some(buffers);
    boost::asio::post(get_executor(),
        boost::asio::detail::bind_handler(
          static_cast<Handler&&>(handler),
          boost::system::error_code(), bytes_transferred));
  }

private:
  boost::asio::io_context& io_context_;