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ReplayGuard

dig_message::replay

Struct ReplayGuard 

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pub struct ReplayGuard { /* private fields */ }
Expand description

The bounded per-receiver anti-replay table (SPEC §5.6). Tracks each sender’s sliding window under a hard MAX_TRACKED_SENDERS LRU cap.

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impl ReplayGuard

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pub fn new() -> Self

An empty guard.

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pub fn tracked_senders(&self) -> usize

The number of currently-tracked senders (≤ MAX_TRACKED_SENDERS).

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pub fn check_and_admit( &mut self, sender: Bytes32, sender_epoch: u32, counter: u64, timestamp_ms: u64, now_ms: u64, ) -> bool

Check freshness + dedup for a message and, on accept, record it (SPEC §5.6).

Returns true (deliver) only when timestamp_ms is within the freshness window AND counter is new for (sender, sender_epoch). Returns false (drop) for a stale timestamp, a duplicate counter, or a counter below the sliding window. State is advanced only on accept.

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impl Default for ReplayGuard

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fn default() -> ReplayGuard

Returns the “default value” for a type. Read more

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