HTTP
CSP
Headers
Access-Control-Allow-Methods
Cross-Origin-Opener-Policy
Feature-Policy: document-domain
Feature-Policy: speaker-selection
Strict-Transport-Security
Status
406 Not Acceptable (RFC 9110)
428 Precondition Required
451 Unavailable For Legal Reasons
505 HTTP Version Not Supported (RFC 9110)
506 Variant Also Negotiates