pub const REDELIVERY_WINDOW_MS: u64 = DEFAULT_OUTBOX_LIFETIME_MS /* 604_800_000u64 */;Expand description
How long one message id may be re-sent after its first send: 7 days.
The one window both ends of a delivery agree on. A sender drops an outbox entry the relay has pushed once it is this old, measured from its first send and never re-granted; a receiver’s deduplicator remembers ids this long, so every replay inside the window is answered as a duplicate (with a re-ACK) instead of reaching a ratchet whose generation is already spent.
Pairs with the relay’s push-claim TTL (one visible notification per
message id) and its mailbox retention, both 7 days: past this age the
relay would push the id again and its mailbox has already let it go.
Fixed rather than read from outbox_max_lifetime_ms, because those relay
windows do not move with an app’s configuration.