事件:'error'
¥Event: 'error'
发生错误时触发。与 net.Socket 不同的是,除非手动调用 server.close(),否则不会在该事件之后直接触发 'close' 事件。参见 server.listen() 讨论中的示例。
¥Emitted when an error occurs. Unlike net.Socket, the 'close'
event will not be emitted directly following this event unless
server.close() is manually called. See the example in discussion of
server.listen().