'checkExpectation' 事件
request
<http.IncomingMessage>response
<http.ServerResponse>
每次收到带有 HTTP Expect
标头的请求时触发,其中值不是 100-continue
。
如果未监听此事件,则服务器将根据需要自动响应 417 Expectation Failed
。
处理和处理此事件时,不会触发 'request'
事件。
request
<http.IncomingMessage>response
<http.ServerResponse>
Emitted each time a request with an HTTP Expect
header is received, where the
value is not 100-continue
. If this event is not listened for, the server will
automatically respond with a 417 Expectation Failed
as appropriate.
When this event is emitted and handled, the 'request'
event will
not be emitted.