If there's already a listening socket on a port, then the state of the socket is changed to listen.

如果端口上已存在侦听的套接字，则将套接字的状态更改为LISTEN。

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The soo_close() simply calls the so_close() function, which first checks if the socket to be closed is a listening socket (socket that's accepting incoming connections).

soo_close() 仅调用 so_close() 函数，该函数首先检查要关闭的套接字是否为侦听套接字（正在接收传入连接的套接字）。

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Developing a scalable Winsock server is not terribly difficult. It's a matter of setting up a listening socket, accepting connections, and making overlapped send and receive calls.

开发大响应规模的Winsock服务器并不是很可怕，其实也就是设置一个监听套接字、接受连接请求和进行重叠收发调用。

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