HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx |
| Date | Sat, 13 Dec 2025 20:31:37 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Vary | Accept-Encoding |
| HTTP/1.1 200 OK | |
| Server | nginx |
| Date | Sat, 13 Dec 2025 20:31:37 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Vary | Accept-Encoding |