HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx |
| Date | Sun, 14 Dec 2025 05:35:23 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Expires | Wed, 11 Jan 1984 05:00:00 GMT |
| Cache-Control | no-cache, must-revalidate, max-age=0, no-store, private |
| Vary | Accept-Encoding |