显示HTTP状态码和HEAD信息↓
HTTP/1.1 200 OK
Server: wts/1.7.0
Date: Tue, 28 May 2024 01:57:05 GMT
Content-Type: text/html
Connection: keep-alive
Vary: Accept-Encoding
Last-Modified: Sat, 17 Apr 2021 08:14:34 GMT
ETag: W/"1d992cb36133d71:0"
Vary: Accept-Encoding