state: drop epoch_tx

The stamp is the only lock-free epoch label.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/swarm/peer/epoch.rs b/src/swarm/peer/epoch.rs
index d97db0f..d00a903 100644
--- a/src/swarm/peer/epoch.rs
+++ b/src/swarm/peer/epoch.rs
@@ -13,7 +13,8 @@ use crate::transport;
 ///
 /// `seq` is the peer's `epoch_seq` with it. A message with a lower one than we have was
 /// sent before the peer's last epoch change and delivered late: its epoch isn't
-/// recorded, so it can't flip our view of the peer back. The count starts over when the
+/// recorded, so it can't flip our view of the peer back. The message itself still
+/// counts: if its epoch is ours, its sync is applied (it is data of our epoch). The count starts over when the
 /// peer restarts, which its HELLO or HELLO_REPLY tells by a new run (`run`).
 pub(super) async fn observe_peer_epoch(
     state: &AppState,