pub fn retry_after_ms(e: &FetchError) -> Option<u64>Expand description
Map a FetchError reference to the structured crate::DenialContext
channel introduced by ADR-0023 §4.
&FetchError (rather than FetchError) so the orchestrator can
produce the structured side-channel without consuming the error it
still needs for error.message and the From<FetchError> for ErrorCode collapse above. The Http arm delegates to the
From<&HttpError> for Option<DenialContext> impl in crate::http.
The server’s own Retry-After for this failure, in milliseconds (#506).
None when the server sent no header, which is most failures. Deliberately
NOT backfilled from doiget’s internal backoff: that is a guess about the
server, and a guess wearing the name of a server-supplied value is exactly
the defect error.disposition and this field exist to remove.
Pairs with crate::Disposition::RetryAfter – the disposition says
“retry”, and this says how long the server asked you to wait before you do.