HTMLメタタグ
<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
.htaccess
Header add Content-Security-Policy "upgrade-insecure-requests"
PHP
header('Content-Security-Policy: upgrade-insecure-requests');
<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
Header add Content-Security-Policy "upgrade-insecure-requests"
header('Content-Security-Policy: upgrade-insecure-requests');
コメント