显示HTTP状态码和HEAD信息↓
HTTP/1.1 200
Server: nginx/1.20.1
Date: Mon, 24 Jun 2024 02:25:41 GMT
Content-Type: text/html
Content-Length: 51952
Connection: keep-alive
Accept-Ranges: bytes
ETag: W/"51952-1606787132000"
Last-Modified: Tue, 01 Dec 2020 01:45:32 GMT