channeld: don't hang up immediately after sending bad reestablish war…

…ning. This gives the peer a chance to send an error, which will make us drop to chain. Signed-off-by: Rusty Russell <[email protected]> Fixes: ElementsProject#5818
rustyrussell · Oct 19, 2023 · 8f0796a · 8f0796a
1 parent 040b3fd
commit 8f0796a
Showing 1 changed file with 11 additions and 7 deletions.
diff --git a/channeld/channeld.c b/channeld/channeld.c
@@ -4841,13 +4841,17 @@ static void peer_reconnect(struct peer *peer,
 		retransmit_revoke_and_ack = true;
 	} else if (next_revocation_number < peer->next_index[LOCAL] - 1) {
 		/* Send a warning here!  Because this is what it looks like if peer is
-		 * in the past, and they might still recover. */
-		peer_failed_warn(peer->pps,
-				 &peer->channel_id,
-				 "bad reestablish revocation_number: %"PRIu64
-				 " vs %"PRIu64,
-				 next_revocation_number,
-				 peer->next_index[LOCAL]);
+		 * in the past, and they might still recover.
+		 *
+		 * We don't disconnect: they might send an error, meaning
+		 * we will force-close the channel for them.
+		 */
+		peer_failed_warn_nodisconnect(peer->pps,
+					      &peer->channel_id,
+					      "bad reestablish revocation_number: %"PRIu64
+					      " vs %"PRIu64,
+					      next_revocation_number,
+					      peer->next_index[LOCAL]);
 	} else if (next_revocation_number > peer->next_index[LOCAL] - 1) {
 		if (!check_extra_fields)
 			/* They don't support option_data_loss_protect or