HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx-reuseport/1.21.1 |
| Date | Thu, 21 Nov 2024 23:36:15 GMT |
| Content-Type | text/html |
| Content-Length | 274 |
| Last-Modified | Mon, 17 Jun 2024 09:36:19 GMT |
| Connection | keep-alive |
| Keep-Alive | timeout=30 |
| ETag | "66700393-112" |
| Accept-Ranges | bytes |