Struct ReplayGuard 

pub struct ReplayGuard { /* private fields */ }

Guards against replayed messages using a bounded LRU cache.

Must be wrapped in Arc<Mutex<ReplayGuard>> for concurrent use in servers.

Implementations

impl ReplayGuard

pub fn new(capacity: usize, window_secs: u64) -> Self

pub fn check( &mut self, message_id: &str, nonce: Option<&str>, timestamp: &str, ) -> Result<(), String>

Check if a message should be accepted. Returns Err with reason if rejected.