HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx |
| Date | Sun, 14 Dec 2025 04:19:10 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Link | <https://xn--55-jlcxv2a.xn--p1ai/index.php?rest_route=/>; rel="https://api.w.org/" |
| Vary | Accept-Encoding |