server.listen(handle[, backlog][, callback])

• handle <Object>

• backlog <number> server.listen() 函数的通用参数

  ¥backlog <number> Common parameter of server.listen() functions

• callback <Function>

• 返回：<net.Server>

  ¥Returns: <net.Server>

启动服务器监听给定 handle 上的连接，该 handle 已经绑定到端口、Unix 域套接字或 Windows 命名管道。

¥Start a server listening for connections on a given handle that has already been bound to a port, a Unix domain socket, or a Windows named pipe.

handle 对象可以是服务器、套接字（任何具有底层 _handle 成员的对象）或具有 fd 成员（有效文件描述符）的对象。

¥The handle object can be either a server, a socket (anything with an underlying _handle member), or an object with an fd member that is a valid file descriptor.

Windows 不支持监听文件描述符。

¥Listening on a file descriptor is not supported on Windows.