Method async_read

test/is_write_buffered.cpp:86–91

  template <typename Mutable_Buffers, typename Handler>
  void async_read(const Mutable_Buffers&, Handler handler)
  {
    boost::system::error_code error;
    boost::asio::post(io_context_,
        boost::asio::detail::bind_handler(handler, error, 0));
  }

private:
  io_context_type& io_context_;