Method do_read_header

example/cpp11/chat/chat_client.cpp:65–80

  }

  void do_read_header()
  {
    boost::asio::async_read(socket_,
        boost::asio::buffer(read_msg_.data(), chat_message::header_length),
        [this](boost::system::error_code ec, std::size_t /*length*/)
        {
          if (!ec && read_msg_.decode_header())
          {
            do_read_body();
          }
          else
          {
            socket_.close();
          }
        });
  }

  void do_read_body()
  {