事件:'error'
\Event: 'error'
新增于: v0.1.90
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().