显示HTTP状态码和HEAD信息↓
HTTP/1.1 200 OK
Date: Tue, 18 Jun 2024 13:29:44 GMT
Server: Apache
Last-Modified: Sat, 30 Dec 2023 09:22:33 GMT
ETag: "2a22307-714a-60db6b04fd4f8"
Accept-Ranges: bytes
Content-Length: 29002
Vary: Accept-Encoding,User-Agent
Content-Type: text/html
X-Pad: avoid browser bug