{"type":"rich","provider_url":"https://hatena.blog","version":"1.0","blog_title":"ASnoKaze blog","height":"190","width":"100%","provider_name":"Hatena Blog","title":"\u65b0\u3057\u3044HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u300c4xx Preliminary Request Denied\u300d\u306e\u63d0\u6848\u4ed5\u69d8","author_url":"https://blog.hatena.ne.jp/ASnoKaze/","published":"2026-02-26 00:36:47","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fasnokaze.hatenablog.com%2Fentry%2F2026%2F02%2F26%2F003647\" title=\"\u65b0\u3057\u3044HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u300c4xx Preliminary Request Denied\u300d\u306e\u63d0\u6848\u4ed5\u69d8 - ASnoKaze blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"description":"\u65b0\u3057\u304f400\u756a\u53f0\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u300eThe Preliminary Request Denied HTTP Status Code\u300f\u3068\u3044\u3046\u63d0\u6848\u304cCloudflare\u306eMark Nottingham\u6c0f\u304b\u3089\u63d0\u51fa\u3055\u308c\u3066\u3044\u307e\u3059\u3002 4xx Preliminary Request Denied \u3053\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304cprefetch\u3084preload\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u62d2\u5426\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059 HTTP \u30b9\u30c6\u30fc\u30bf\u30b9 \u30b3\u30fc\u30c9\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u307e\u3060\u672a\u5b9a\u3067\u3059\u3002\u306a\u304a\u3001Preliminary request\u3068\u306f Sec-Purpose\u30d8\u30c3\u30c0\u306b\"prefetch\"\u304c\u6307\u5b9a\u3055\u308c\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u3053\u3068\u2026","url":"https://asnokaze.hatenablog.com/entry/2026/02/26/003647","categories":["HTTP","internet-draft"],"author_name":"ASnoKaze","blog_url":"https://asnokaze.hatenablog.com/"}