if disconnect {
nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
- reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+ reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
}
match persister_fail {
if disconnect {
nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
- reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+ reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
}
// ...and make sure we can force-close a frozen channel
// Make sure nodes[1] isn't stupid enough to re-send the FundingLocked on reconnect
nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
- reconnect_nodes(&nodes[0], &nodes[1], (false, confirm_a_first), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+ reconnect_nodes(&nodes[0], &nodes[1], (false, confirm_a_first), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
do_channel_holding_cell_serialize(true, false);
do_channel_holding_cell_serialize(false, true); // last arg doesn't matter
}
+
+#[derive(PartialEq)]
+enum HTLCStatusAtDupClaim {
+ Received,
+ HoldingCell,
+ Cleared,
+}
+fn do_test_reconnect_dup_htlc_claims(htlc_status: HTLCStatusAtDupClaim, second_fails: bool) {
+ // When receiving an update_fulfill_htlc message, we immediately forward the claim backwards
+ // along the payment path before waiting for a full commitment_signed dance. This is great, but
+ // can cause duplicative claims if a node sends an update_fulfill_htlc message, disconnects,
+ // reconnects, and then has to re-send its update_fulfill_htlc message again.
+ // In previous code, we didn't handle the double-claim correctly, spuriously closing the
+ // channel on which the inbound HTLC was received.
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()).2;
+
+ let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
+
+ let mut as_raa = None;
+ if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
+ // In order to get the HTLC claim into the holding cell at nodes[1], we need nodes[1] to be
+ // awaiting a remote revoke_and_ack from nodes[0].
+ let (_, second_payment_hash, second_payment_secret) = get_payment_preimage_hash!(nodes[1]);
+ let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(),
+ &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, nodes[1].logger).unwrap();
+ nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret)).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
+ nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg);
+ check_added_monitors!(nodes[1], 1);
+
+ let (bs_raa, bs_cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
+ check_added_monitors!(nodes[0], 1);
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs);
+ check_added_monitors!(nodes[0], 1);
+
+ as_raa = Some(get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()));
+ }
+
+ let fulfill_msg = msgs::UpdateFulfillHTLC {
+ channel_id: chan_2,
+ htlc_id: 0,
+ payment_preimage,
+ };
+ if second_fails {
+ assert!(nodes[2].node.fail_htlc_backwards(&payment_hash));
+ expect_pending_htlcs_forwardable!(nodes[2]);
+ check_added_monitors!(nodes[2], 1);
+ get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+ } else {
+ assert!(nodes[2].node.claim_funds(payment_preimage));
+ check_added_monitors!(nodes[2], 1);
+ let cs_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+ assert_eq!(cs_updates.update_fulfill_htlcs.len(), 1);
+ // Check that the message we're about to deliver matches the one generated:
+ assert_eq!(fulfill_msg, cs_updates.update_fulfill_htlcs[0]);
+ }
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &fulfill_msg);
+ check_added_monitors!(nodes[1], 1);
+
+ let mut bs_updates = None;
+ if htlc_status != HTLCStatusAtDupClaim::HoldingCell {
+ bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
+ assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
+ nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
+ expect_payment_sent!(nodes[0], payment_preimage);
+ if htlc_status == HTLCStatusAtDupClaim::Cleared {
+ commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
+ }
+ } else {
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ }
+
+ nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
+ nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+
+ if second_fails {
+ reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
+ expect_pending_htlcs_forwardable!(nodes[1]);
+ } else {
+ reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (0, 0), (false, false));
+ }
+
+ if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa.unwrap());
+ check_added_monitors!(nodes[1], 1);
+ expect_pending_htlcs_forwardable_ignore!(nodes[1]); // We finally receive the second payment, but don't claim it
+
+ bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
+ assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
+ nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
+ expect_payment_sent!(nodes[0], payment_preimage);
+ }
+ if htlc_status != HTLCStatusAtDupClaim::Cleared {
+ commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
+ }
+}
+
+#[test]
+fn test_reconnect_dup_htlc_claims() {
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, false);
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, false);
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, false);
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, true);
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, true);
+ do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, true);
+}
projects / rust-lightning / blobdiff