Question

我用这个代码来读读

  socket_.async_read_some(boost::asio::buffer(data_, max_length),
        boost::bind(&session::handle_read, this,
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));

和此写作的

boost::asio::async_write(socket_,
    boost::asio::buffer(data_, bytes_transferred),
    boost::bind(&session::handle_write, this,
    boost::asio::placeholders::error));

套接字的位置是套接字,最大长度是数值为1024的圆形,而数据是长度为最大长度的字符阵列。

但我想用溪泡取代字符阵列缓冲。

  boost::asio::streambuf streamBuffer;
  socket_.async_read_some(boost::asio::buffer(streamBuffer),
        boost::bind(&session::handle_read, this,
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));

但不管用,我该怎么做?

Answer 1

http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/basic_strembuf/mutable_buffers_type.html" rel="noreferr"\code>可调的_buffers_type smillbuf ,作为您第一个参数使用 async_read_code 。

  boost::asio::streambuf streamBuffer;
  boost::asio::streambuf::mutable_buffers_type mutableBuffer =
      streamBuffer.prepare(max_length);
  socket_.async_read_some(boost::asio::buffer(mutableBuffer),
        boost::bind(&session::handle_read, this,
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));

见asio document relation/base_treferrer>和 rel=“noreferr'>rere 以获得更多信息。

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