'timeout' 事件

如果套接字因不活动而超时则触发。 这只是通知套接字已空闲。 用户必须手动关闭连接。

另见: socket.setTimeout()。

Emitted if the socket times out from inactivity. This is only to notify that the socket has been idle. The user must manually close the connection.

See also: socket.setTimeout().