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Strict Transport Security ヘッダーについて

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Posted at

Strict Transport Securityヘッダーとは

サーバ側がレスポンスに指定するヘッダー
このヘッダはブラウザ側にhttps通信を行うように指示する意味合いがある。

ディレクティブ

max-age: 有効期間。0を指定するとSTSを解除できる
includeSubDomains: サブドメインも含むか?省略可能
preload: 先読みに使用される。ブラウザごとの独自規格

使う場面

httpsでアクセスしてほしい場合

参考

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