显示HTTP状态码和HEAD信息↓
HTTP/1.1 200 OK
Date: Fri, 12 Jul 2024 09:55:20 GMT
Server: Microsoft-IIS/6.0
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Set-Cookie: lg=cn; path=/; httponly
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Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 0