WinSock select() on listen()ing 套接字，非阻塞 I/O？

Question

当我做 select()在 listen()在 Windows 上使用套接字并且它是非阻塞的。当连接挂起时，我是否会收到读取事件或写入事件？

Answer 1

读。

来自 MSDN :

The parameter readfds identifies the sockets that are to be checked for readability. If the socket is currently in the listen state, it will be marked as readable if an incoming connection request has been received such that an accept is guaranteed to complete without blocking.