显示HTTP状态码和HEAD信息↓
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 20 Jun 2024 15:19:01 GMT
Content-Type: text/html
Content-Length: 49778
Last-Modified: Thu, 20 Jun 2024 10:45:43 GMT
Connection: keep-alive
Vary: Accept-Encoding
ETag: "66740857-c272"
Accept-Ranges: bytes