For the buffer processing, the MFC treats a zero-size data request as a no-op, so I can go ahead and issue requests even if there is no data to read.

对于缓冲区处理，MFC 将大小为零的数据请求当作无操作来对待，所以即使没有数据可读取了，也可以继续发出请求。

youdao

For the buffer processing, the MFC treats a zero-size data request as a no-op, so I can go ahead and issue requests even if there is no data to read.

对于缓冲区处理，MFC 将大小为零的数据请求当作无操作来对待，所以即使没有数据可读取了，也可以继续发出请求。

youdao