Method parse_inbound

nodedb-cluster/src/transport/client/send.rs:194–202

Parse an inbound envelope: verify MAC, check replay window, decode inner RPC. Self-addressed frames skip the replay-window check. In a single-node test (or when a node genuinely dispatches an RPC to itself over the transport) the client and server share one `AuthContext`, which means one `peer_seq_in` window is updated by *both* the server-side request-accept and the client-side response-accept.

(&self, envelope: &[u8])

    /// was never replayed, the same window simply saw traffic from both
    /// directions for `peer_id == local_node_id`.
    fn parse_inbound(&self, envelope: &[u8]) -> Result<RaftRpc> {
        let (fields, inner_frame) = auth_envelope::parse_envelope(envelope, &self.auth.mac_key)?;
        if fields.from_node_id != self.auth.local_node_id {
            self.auth
                .peer_seq_in
                .accept(fields.from_node_id, fields.seq)?;
        }
        rpc_codec::decode(inner_frame)
    }
}