HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx |
| Date | Sat, 13 Dec 2025 20:44:17 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Link | <https://xn--73-1lctjb.xn--p1ai/index.php?rest_route=/>; rel="https://api.w.org/" |
| Vary | Accept-Encoding |