+ _ => panic!("Unexpected event"),
+ }
+ } else {
+ assert!(events.is_empty());
+ }
+ if !skip_last && idx == expected_route.len() - 1 {
+ assert_eq!(expected_next_node, origin_node.node.get_our_node_id());
+ }
+
+ prev_node = node;
+ }
+
+ if !skip_last {
+ update_fail_dance!(origin_node, expected_route.first().unwrap(), true);
+
+ let events = origin_node.node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentFailed { payment_hash, rejected_by_dest } => {
+ assert_eq!(payment_hash, our_payment_hash);
+ assert!(rejected_by_dest);
+ },
+ _ => panic!("Unexpected event"),
+ }
+ }
+ }
+
+ fn fail_payment(origin_node: &Node, expected_route: &[&Node], our_payment_hash: [u8; 32]) {
+ fail_payment_along_route(origin_node, expected_route, false, our_payment_hash);
+ }
+
+ fn create_network(node_count: usize) -> Vec<Node> {
+ let mut nodes = Vec::new();
+ let mut rng = thread_rng();
+ let secp_ctx = Secp256k1::new();
+ let logger: Arc<Logger> = Arc::new(test_utils::TestLogger::new());
+
+ let chan_count = Rc::new(RefCell::new(0));
+ let payment_count = Rc::new(RefCell::new(0));
+
+ for _ in 0..node_count {
+ let feeest = Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 });
+ let chain_monitor = Arc::new(chaininterface::ChainWatchInterfaceUtil::new(Network::Testnet, Arc::clone(&logger)));
+ let tx_broadcaster = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())});
+ let mut seed = [0; 32];
+ rng.fill_bytes(&mut seed);
+ let keys_manager = Arc::new(keysinterface::KeysManager::new(&seed, Network::Testnet, Arc::clone(&logger)));
+ let chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(chain_monitor.clone(), tx_broadcaster.clone(), logger.clone()));
+ let mut config = UserConfig::new();
+ config.channel_options.announced_channel = true;
+ config.channel_limits.force_announced_channel_preference = false;
+ let node = ChannelManager::new(Network::Testnet, feeest.clone(), chan_monitor.clone(), chain_monitor.clone(), tx_broadcaster.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap();
+ let router = Router::new(PublicKey::from_secret_key(&secp_ctx, &keys_manager.get_node_secret()), chain_monitor.clone(), Arc::clone(&logger));
+ nodes.push(Node { chain_monitor, tx_broadcaster, chan_monitor, node, router, node_seed: seed,
+ network_payment_count: payment_count.clone(),
+ network_chan_count: chan_count.clone(),
+ });
+ }
+
+ nodes
+ }
+
+ #[test]
+ fn test_async_inbound_update_fee() {
+ let mut nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ // balancing
+ send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
+
+ // A B
+ // update_fee ->
+ // send (1) commitment_signed -.
+ // <- update_add_htlc/commitment_signed
+ // send (2) RAA (awaiting remote revoke) -.
+ // (1) commitment_signed is delivered ->
+ // .- send (3) RAA (awaiting remote revoke)
+ // (2) RAA is delivered ->
+ // .- send (4) commitment_signed
+ // <- (3) RAA is delivered
+ // send (5) commitment_signed -.
+ // <- (4) commitment_signed is delivered
+ // send (6) RAA -.
+ // (5) commitment_signed is delivered ->
+ // <- RAA
+ // (6) RAA is delivered ->
+
+ // First nodes[0] generates an update_fee
+ nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg, commitment_signed) = match events_0[0] { // (1)
+ MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
+ (update_fee.as_ref(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+
+ // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
+ let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
+ nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap();
+ check_added_monitors!(nodes[1], 1);
+
+ let payment_event = {
+ let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_1.len(), 1);
+ SendEvent::from_event(events_1.remove(0))
+ };
+ assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
+ assert_eq!(payment_event.msgs.len(), 1);
+
+ // ...now when the messages get delivered everyone should be happy
+ nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2)
+ let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+
+ // deliver(1), generate (3):
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
+ let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
+ // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[1], 1);
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); // deliver (2)
+ let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ assert!(bs_update.update_add_htlcs.is_empty()); // (4)
+ assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
+ assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
+ assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
+ assert!(bs_update.update_fee.is_none()); // (4)
+ check_added_monitors!(nodes[1], 1);
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); // deliver (3)
+ let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+ assert!(as_update.update_add_htlcs.is_empty()); // (5)
+ assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
+ assert!(as_update.update_fail_htlcs.is_empty()); // (5)
+ assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
+ assert!(as_update.update_fee.is_none()); // (5)
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed).unwrap(); // deliver (4)
+ let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // only (6) so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed).unwrap(); // deliver (5)
+ let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_2 = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events_2.len(), 1);
+ match events_2[0] {
+ Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
+ _ => panic!("Unexpected event"),
+ }
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); // deliver (6)
+ check_added_monitors!(nodes[1], 1);
+ }
+
+ #[test]
+ fn test_update_fee_unordered_raa() {
+ // Just the intro to the previous test followed by an out-of-order RAA (which caused a
+ // crash in an earlier version of the update_fee patch)
+ let mut nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ // balancing
+ send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
+
+ // First nodes[0] generates an update_fee
+ nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let update_msg = match events_0[0] { // (1)
+ MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
+ update_fee.as_ref()
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+
+ // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
+ let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
+ nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap();
+ check_added_monitors!(nodes[1], 1);
+
+ let payment_event = {
+ let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_1.len(), 1);
+ SendEvent::from_event(events_1.remove(0))
+ };
+ assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
+ assert_eq!(payment_event.msgs.len(), 1);
+
+ // ...now when the messages get delivered everyone should be happy
+ nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2)
+ let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); // deliver (2)
+ check_added_monitors!(nodes[1], 1);
+
+ // We can't continue, sadly, because our (1) now has a bogus signature
+ }
+
+ #[test]
+ fn test_multi_flight_update_fee() {
+ let nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ // A B
+ // update_fee/commitment_signed ->
+ // .- send (1) RAA and (2) commitment_signed
+ // update_fee (never committed) ->
+ // (3) update_fee ->
+ // We have to manually generate the above update_fee, it is allowed by the protocol but we
+ // don't track which updates correspond to which revoke_and_ack responses so we're in
+ // AwaitingRAA mode and will not generate the update_fee yet.
+ // <- (1) RAA delivered
+ // (3) is generated and send (4) CS -.
+ // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
+ // know the per_commitment_point to use for it.
+ // <- (2) commitment_signed delivered
+ // revoke_and_ack ->
+ // B should send no response here
+ // (4) commitment_signed delivered ->
+ // <- RAA/commitment_signed delivered
+ // revoke_and_ack ->
+
+ // First nodes[0] generates an update_fee
+ let initial_feerate = get_feerate!(nodes[0], channel_id);
+ nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
+ MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
+ (update_fee.as_ref().unwrap(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1).unwrap();
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1).unwrap();
+ let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
+ // transaction:
+ nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Create the (3) update_fee message that nodes[0] will generate before it does...
+ let mut update_msg_2 = msgs::UpdateFee {
+ channel_id: update_msg_1.channel_id.clone(),
+ feerate_per_kw: (initial_feerate + 30) as u32,
+ };
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap();
+
+ update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
+ // Deliver (3)
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap();
+
+ // Deliver (1), generating (3) and (4)
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg).unwrap();
+ let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+ check_added_monitors!(nodes[0], 1);
+ assert!(as_second_update.update_add_htlcs.is_empty());
+ assert!(as_second_update.update_fulfill_htlcs.is_empty());
+ assert!(as_second_update.update_fail_htlcs.is_empty());
+ assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
+ // Check that the update_fee newly generated matches what we delivered:
+ assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
+ assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
+
+ // Deliver (2) commitment_signed
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap();
+ let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ check_added_monitors!(nodes[0], 1);
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap();
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[1], 1);
+
+ // Delever (4)
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed).unwrap();
+ let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment).unwrap();
+ let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap();
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[1], 1);
+ }
+
+ #[test]
+ fn test_update_fee_vanilla() {
+ let nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ let feerate = get_feerate!(nodes[0], channel_id);
+ nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg, commitment_signed) = match events_0[0] {
+ MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
+ (update_fee.as_ref(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
+ let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap();
+ let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[1], 1);
+ }
+
+ #[test]
+ fn test_update_fee_that_funder_cannot_afford() {
+ let mut nodes = create_network(2);
+ let channel_value = 1888;
+ let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000);
+ let channel_id = chan.2;
+
+ let feerate = 260;
+ nodes[0].node.update_fee(channel_id, feerate).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap()).unwrap();
+
+ commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
+
+ //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
+ //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
+ {
+ let chan_lock = nodes[1].node.channel_state.lock().unwrap();
+ let chan = chan_lock.by_id.get(&channel_id).unwrap();
+
+ //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
+ let num_htlcs = chan.last_local_commitment_txn[0].output.len() - 2;
+ let total_fee: u64 = feerate * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
+ let mut actual_fee = chan.last_local_commitment_txn[0].output.iter().fold(0, |acc, output| acc + output.value);
+ actual_fee = channel_value - actual_fee;
+ assert_eq!(total_fee, actual_fee);
+ } //drop the mutex
+
+ //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
+ //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
+ nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap());
+
+ //While producing the commitment_signed response after handling a received update_fee request the
+ //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
+ //Should produce and error.
+ let err = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed).unwrap_err();
+
+ assert!(match err.err {
+ "Funding remote cannot afford proposed new fee" => true,
+ _ => false,
+ });
+
+ //clear the message we could not handle
+ nodes[1].node.get_and_clear_pending_msg_events();
+ }
+
+ #[test]
+ fn test_update_fee_with_fundee_update_add_htlc() {
+ let mut nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ // balancing
+ send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
+
+ let feerate = get_feerate!(nodes[0], channel_id);
+ nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg, commitment_signed) = match events_0[0] {
+ MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
+ (update_fee.as_ref(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
+ let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ let route = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 800000, TEST_FINAL_CLTV).unwrap();
+
+ let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]);
+
+ // nothing happens since node[1] is in AwaitingRemoteRevoke
+ nodes[1].node.send_payment(route, our_payment_hash).unwrap();
+ {
+ let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 0);
+ added_monitors.clear();
+ }
+ assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ // node[1] has nothing to do
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[0], 1);
+
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap();
+ let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+ check_added_monitors!(nodes[0], 1);
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ // AwaitingRemoteRevoke ends here
+
+ let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ assert_eq!(commitment_update.update_add_htlcs.len(), 1);
+ assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
+ assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
+ assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
+ assert_eq!(commitment_update.update_fee.is_none(), true);
+
+ nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]).unwrap();
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PendingHTLCsForwardable { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
+ nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now();
+ nodes[0].node.process_pending_htlc_forwards();
+
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentReceived { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
+
+ claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage);
+
+ send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000);
+ send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000);
+ close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
+ }
+
+ #[test]
+ fn test_update_fee() {
+ let nodes = create_network(2);
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let channel_id = chan.2;
+
+ // A B
+ // (1) update_fee/commitment_signed ->
+ // <- (2) revoke_and_ack
+ // .- send (3) commitment_signed
+ // (4) update_fee/commitment_signed ->
+ // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
+ // <- (3) commitment_signed delivered
+ // send (6) revoke_and_ack -.
+ // <- (5) deliver revoke_and_ack
+ // (6) deliver revoke_and_ack ->
+ // .- send (7) commitment_signed in response to (4)
+ // <- (7) deliver commitment_signed
+ // revoke_and_ack ->
+
+ // Create and deliver (1)...
+ let feerate = get_feerate!(nodes[0], channel_id);
+ nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg, commitment_signed) = match events_0[0] {
+ MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
+ (update_fee.as_ref(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+
+ // Generate (2) and (3):
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
+ let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ check_added_monitors!(nodes[1], 1);
+
+ // Deliver (2):
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[0], 1);
+
+ // Create and deliver (4)...
+ nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_0.len(), 1);
+ let (update_msg, commitment_signed) = match events_0[0] {
+ MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
+ (update_fee.as_ref(), commitment_signed)
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ // ... creating (5)
+ let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+
+ // Handle (3), creating (6):
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+
+ // Deliver (5):
+ nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ check_added_monitors!(nodes[0], 1);
+
+ // Deliver (6), creating (7):
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0).unwrap();
+ let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ assert!(commitment_update.update_add_htlcs.is_empty());
+ assert!(commitment_update.update_fulfill_htlcs.is_empty());
+ assert!(commitment_update.update_fail_htlcs.is_empty());
+ assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
+ assert!(commitment_update.update_fee.is_none());
+ check_added_monitors!(nodes[1], 1);
+
+ // Deliver (7)
+ nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ // No commitment_signed so get_event_msg's assert(len == 1) passes
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
+ assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
+ close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
+ }
+
+ #[test]
+ fn pre_funding_lock_shutdown_test() {
+ // Test sending a shutdown prior to funding_locked after funding generation
+ let nodes = create_network(2);
+ let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0);
+ let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
+ nodes[0].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]);
+ nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]);
+
+ nodes[0].node.close_channel(&OutPoint::new(tx.txid(), 0).to_channel_id()).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
+
+ let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+
+ assert!(nodes[0].node.list_channels().is_empty());
+ assert!(nodes[1].node.list_channels().is_empty());
+ }
+
+ #[test]
+ fn updates_shutdown_wait() {
+ // Test sending a shutdown with outstanding updates pending
+ let mut nodes = create_network(3);
+ let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+ let route_1 = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
+ let route_2 = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
+
+ let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
+
+ nodes[0].node.close_channel(&chan_1.2).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
+
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
+ if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route_1, payment_hash) {}
+ else { panic!("New sends should fail!") };
+ if let Err(APIError::ChannelUnavailable {..}) = nodes[1].node.send_payment(route_2, payment_hash) {}
+ else { panic!("New sends should fail!") };
+
+ assert!(nodes[2].node.claim_funds(our_payment_preimage));
+ check_added_monitors!(nodes[2], 1);
+ let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+ assert!(updates.update_add_htlcs.is_empty());
+ assert!(updates.update_fail_htlcs.is_empty());
+ assert!(updates.update_fail_malformed_htlcs.is_empty());
+ assert!(updates.update_fee.is_none());
+ assert_eq!(updates.update_fulfill_htlcs.len(), 1);
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
+
+ assert!(updates_2.update_add_htlcs.is_empty());
+ assert!(updates_2.update_fail_htlcs.is_empty());
+ assert!(updates_2.update_fail_malformed_htlcs.is_empty());
+ assert!(updates_2.update_fee.is_none());
+ assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
+ nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap();
+ commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
+
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentSent { ref payment_preimage } => {
+ assert_eq!(our_payment_preimage, *payment_preimage);
+ },
+ _ => panic!("Unexpected event"),
+ }
+
+ let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+
+ assert!(nodes[0].node.list_channels().is_empty());
+
+ assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
+ nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
+ close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
+ assert!(nodes[1].node.list_channels().is_empty());
+ assert!(nodes[2].node.list_channels().is_empty());
+ }
+
+ #[test]
+ fn htlc_fail_async_shutdown() {
+ // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
+ let mut nodes = create_network(3);
+ let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+
+ let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
+ let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
+ nodes[0].node.send_payment(route, our_payment_hash).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+ assert_eq!(updates.update_add_htlcs.len(), 1);
+ assert!(updates.update_fulfill_htlcs.is_empty());
+ assert!(updates.update_fail_htlcs.is_empty());
+ assert!(updates.update_fail_malformed_htlcs.is_empty());
+ assert!(updates.update_fee.is_none());
+
+ nodes[1].node.close_channel(&chan_1.2).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap();
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
+ commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
+
+ let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ assert!(updates_2.update_add_htlcs.is_empty());
+ assert!(updates_2.update_fulfill_htlcs.is_empty());
+ assert_eq!(updates_2.update_fail_htlcs.len(), 1);
+ assert!(updates_2.update_fail_malformed_htlcs.is_empty());
+ assert!(updates_2.update_fee.is_none());
+
+ nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]).unwrap();
+ commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
+
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentFailed { ref payment_hash, ref rejected_by_dest } => {
+ assert_eq!(our_payment_hash, *payment_hash);
+ assert!(!rejected_by_dest);
+ },
+ _ => panic!("Unexpected event"),
+ }
+
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+
+ assert!(nodes[0].node.list_channels().is_empty());
+
+ assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
+ nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
+ close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
+ assert!(nodes[1].node.list_channels().is_empty());
+ assert!(nodes[2].node.list_channels().is_empty());
+ }
+
+ #[test]
+ fn update_fee_async_shutdown() {
+ // Test update_fee works after shutdown start if messages are delivered out-of-order
+ let nodes = create_network(2);
+ let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+
+ let starting_feerate = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().get_feerate();
+ nodes[0].node.update_fee(chan_1.2.clone(), starting_feerate + 20).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+ assert!(updates.update_add_htlcs.is_empty());
+ assert!(updates.update_fulfill_htlcs.is_empty());
+ assert!(updates.update_fail_htlcs.is_empty());
+ assert!(updates.update_fail_malformed_htlcs.is_empty());
+ assert!(updates.update_fee.is_some());
+
+ nodes[1].node.close_channel(&chan_1.2).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
+ // Note that we don't actually test normative behavior here. The spec indicates we could
+ // actually send a closing_signed here, but is kinda unclear and could possibly be amended
+ // to require waiting on the full commitment dance before doing so (see
+ // https://github.com/lightningnetwork/lightning-rfc/issues/499). In any case, to avoid
+ // ambiguity, we should wait until after the full commitment dance to send closing_signed.
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &updates.update_fee.unwrap()).unwrap();
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
+ let node_0_closing_signed = commitment_signed_dance!(nodes[1], nodes[0], (), false, true, true);
+
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), match node_0_closing_signed.unwrap() {
+ MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
+ assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+ msg
+ },
+ _ => panic!("Unexpected event"),
+ }).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+ }
+
+ fn do_test_shutdown_rebroadcast(recv_count: u8) {
+ // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
+ // messages delivered prior to disconnect
+ let nodes = create_network(3);
+ let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+
+ let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
+
+ nodes[1].node.close_channel(&chan_1.2).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ if recv_count > 0 {
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ if recv_count > 1 {
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
+ }
+ }
+
+ 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);
+
+ nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
+ let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
+ nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
+ let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
+
+ nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish).unwrap();
+ let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ assert!(node_1_shutdown == node_1_2nd_shutdown);
+
+ nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish).unwrap();
+ let node_0_2nd_shutdown = if recv_count > 0 {
+ let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap();
+ node_0_2nd_shutdown
+ } else {
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap();
+ get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
+ };
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown).unwrap();
+
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ assert!(nodes[2].node.claim_funds(our_payment_preimage));
+ check_added_monitors!(nodes[2], 1);
+ let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+ assert!(updates.update_add_htlcs.is_empty());
+ assert!(updates.update_fail_htlcs.is_empty());
+ assert!(updates.update_fail_malformed_htlcs.is_empty());
+ assert!(updates.update_fee.is_none());
+ assert_eq!(updates.update_fulfill_htlcs.len(), 1);
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap();
+ check_added_monitors!(nodes[1], 1);
+ let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
+
+ assert!(updates_2.update_add_htlcs.is_empty());
+ assert!(updates_2.update_fail_htlcs.is_empty());
+ assert!(updates_2.update_fail_malformed_htlcs.is_empty());
+ assert!(updates_2.update_fee.is_none());
+ assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
+ nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap();
+ commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
+
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentSent { ref payment_preimage } => {
+ assert_eq!(our_payment_preimage, *payment_preimage);
+ },
+ _ => panic!("Unexpected event"),
+ }
+
+ let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ if recv_count > 0 {
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ assert!(node_1_closing_signed.is_some());
+ }
+
+ 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);
+
+ nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
+ let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
+ nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
+ if recv_count == 0 {
+ // If all closing_signeds weren't delivered we can just resume where we left off...
+ let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
+
+ nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish).unwrap();
+ let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
+
+ nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish).unwrap();
+ let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
+
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown).unwrap();
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown).unwrap();
+ let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ assert!(node_0_closing_signed == node_0_2nd_closing_signed);
+
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed).unwrap();
+ let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+ } else {
+ // If one node, however, received + responded with an identical closing_signed we end
+ // up erroring and node[0] will try to broadcast its own latest commitment transaction.
+ // There isn't really anything better we can do simply, but in the future we might
+ // explore storing a set of recently-closed channels that got disconnected during
+ // closing_signed and avoiding broadcasting local commitment txn for some timeout to
+ // give our counterparty enough time to (potentially) broadcast a cooperative closing
+ // transaction.
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ if let Err(msgs::HandleError{action: Some(msgs::ErrorAction::SendErrorMessage{msg}), ..}) =
+ nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish) {
+ nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
+ let msgs::ErrorMessage {ref channel_id, ..} = msg;
+ assert_eq!(*channel_id, chan_1.2);
+ } else { panic!("Needed SendErrorMessage close"); }
+
+ // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
+ // checks it, but in this case nodes[0] didn't ever get a chance to receive a
+ // closing_signed so we do it ourselves
+ let events = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+ assert_eq!(msg.contents.flags & 2, 2);
+ },
+ _ => panic!("Unexpected event"),
+ }
+ }
+
+ assert!(nodes[0].node.list_channels().is_empty());
+
+ assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
+ nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
+ close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
+ assert!(nodes[1].node.list_channels().is_empty());
+ assert!(nodes[2].node.list_channels().is_empty());
+ }
+
+ #[test]
+ fn test_shutdown_rebroadcast() {
+ do_test_shutdown_rebroadcast(0);
+ do_test_shutdown_rebroadcast(1);
+ do_test_shutdown_rebroadcast(2);
+ }
+
+ #[test]
+ fn fake_network_test() {
+ // Simple test which builds a network of ChannelManagers, connects them to each other, and
+ // tests that payments get routed and transactions broadcast in semi-reasonable ways.
+ let nodes = create_network(4);
+
+ // Create some initial channels
+ let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+ let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+ let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
+
+ // Rebalance the network a bit by relaying one payment through all the channels...
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
+
+ // Send some more payments
+ send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000);
+ send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000);
+ send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000);
+
+ // Test failure packets
+ let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
+ fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
+
+ // Add a new channel that skips 3
+ let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3);
+
+ send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000);
+ send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000);
+ send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
+ send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
+ send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
+ send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
+ send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
+
+ // Do some rebalance loop payments, simultaneously
+ let mut hops = Vec::with_capacity(3);
+ hops.push(RouteHop {
+ pubkey: nodes[2].node.get_our_node_id(),
+ short_channel_id: chan_2.0.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: nodes[3].node.get_our_node_id(),
+ short_channel_id: chan_3.0.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: nodes[1].node.get_our_node_id(),
+ short_channel_id: chan_4.0.contents.short_channel_id,
+ fee_msat: 1000000,
+ cltv_expiry_delta: TEST_FINAL_CLTV,
+ });
+ hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
+ hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
+ let payment_preimage_1 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
+
+ let mut hops = Vec::with_capacity(3);
+ hops.push(RouteHop {
+ pubkey: nodes[3].node.get_our_node_id(),
+ short_channel_id: chan_4.0.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: nodes[2].node.get_our_node_id(),
+ short_channel_id: chan_3.0.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: nodes[1].node.get_our_node_id(),
+ short_channel_id: chan_2.0.contents.short_channel_id,
+ fee_msat: 1000000,
+ cltv_expiry_delta: TEST_FINAL_CLTV,
+ });
+ hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
+ hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
+ let payment_hash_2 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
+
+ // Claim the rebalances...
+ fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
+ claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1);
+
+ // Add a duplicate new channel from 2 to 4
+ let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3);
+
+ // Send some payments across both channels
+ let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
+ let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
+ let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
+
+ route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
+
+ //TODO: Test that routes work again here as we've been notified that the channel is full
+
+ claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3);
+ claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4);
+ claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5);
+
+ // Close down the channels...
+ close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
+ close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
+ close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
+ close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
+ close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
+ }
+
+ #[test]
+ fn duplicate_htlc_test() {
+ // Test that we accept duplicate payment_hash HTLCs across the network and that
+ // claiming/failing them are all separate and don't effect each other
+ let mut nodes = create_network(6);
+
+ // Create some initial channels to route via 3 to 4/5 from 0/1/2
+ create_announced_chan_between_nodes(&nodes, 0, 3);
+ create_announced_chan_between_nodes(&nodes, 1, 3);
+ create_announced_chan_between_nodes(&nodes, 2, 3);
+ create_announced_chan_between_nodes(&nodes, 3, 4);
+ create_announced_chan_between_nodes(&nodes, 3, 5);
+
+ let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
+
+ *nodes[0].network_payment_count.borrow_mut() -= 1;
+ assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
+
+ *nodes[0].network_payment_count.borrow_mut() -= 1;
+ assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
+
+ claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage);
+ fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
+ claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage);
+ }
+
+ #[derive(PartialEq)]
+ enum HTLCType { NONE, TIMEOUT, SUCCESS }
+ /// Tests that the given node has broadcast transactions for the given Channel
+ ///
+ /// First checks that the latest local commitment tx has been broadcast, unless an explicit
+ /// commitment_tx is provided, which may be used to test that a remote commitment tx was
+ /// broadcast and the revoked outputs were claimed.
+ ///
+ /// Next tests that there is (or is not) a transaction that spends the commitment transaction
+ /// that appears to be the type of HTLC transaction specified in has_htlc_tx.
+ ///
+ /// All broadcast transactions must be accounted for in one of the above three types of we'll
+ /// also fail.
+ fn test_txn_broadcast(node: &Node, chan: &(msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction), commitment_tx: Option<Transaction>, has_htlc_tx: HTLCType) -> Vec<Transaction> {
+ let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap();
+ assert!(node_txn.len() >= if commitment_tx.is_some() { 0 } else { 1 } + if has_htlc_tx == HTLCType::NONE { 0 } else { 1 });
+
+ let mut res = Vec::with_capacity(2);
+ node_txn.retain(|tx| {
+ if tx.input.len() == 1 && tx.input[0].previous_output.txid == chan.3.txid() {
+ check_spends!(tx, chan.3.clone());
+ if commitment_tx.is_none() {
+ res.push(tx.clone());
+ }
+ false
+ } else { true }
+ });
+ if let Some(explicit_tx) = commitment_tx {
+ res.push(explicit_tx.clone());
+ }
+
+ assert_eq!(res.len(), 1);
+
+ if has_htlc_tx != HTLCType::NONE {
+ node_txn.retain(|tx| {
+ if tx.input.len() == 1 && tx.input[0].previous_output.txid == res[0].txid() {
+ check_spends!(tx, res[0].clone());
+ if has_htlc_tx == HTLCType::TIMEOUT {
+ assert!(tx.lock_time != 0);
+ } else {
+ assert!(tx.lock_time == 0);
+ }
+ res.push(tx.clone());
+ false
+ } else { true }
+ });
+ assert_eq!(res.len(), 2);
+ }
+
+ assert!(node_txn.is_empty());
+ res
+ }
+
+ /// Tests that the given node has broadcast a claim transaction against the provided revoked
+ /// HTLC transaction.
+ fn test_revoked_htlc_claim_txn_broadcast(node: &Node, revoked_tx: Transaction) {
+ let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap();
+ assert_eq!(node_txn.len(), 1);
+ node_txn.retain(|tx| {
+ if tx.input.len() == 1 && tx.input[0].previous_output.txid == revoked_tx.txid() {
+ check_spends!(tx, revoked_tx.clone());
+ false
+ } else { true }
+ });
+ assert!(node_txn.is_empty());
+ }
+
+ fn check_preimage_claim(node: &Node, prev_txn: &Vec<Transaction>) -> Vec<Transaction> {
+ let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap();
+
+ assert!(node_txn.len() >= 1);
+ assert_eq!(node_txn[0].input.len(), 1);
+ let mut found_prev = false;
+
+ for tx in prev_txn {
+ if node_txn[0].input[0].previous_output.txid == tx.txid() {
+ check_spends!(node_txn[0], tx.clone());
+ assert!(node_txn[0].input[0].witness[2].len() > 106); // must spend an htlc output
+ assert_eq!(tx.input.len(), 1); // must spend a commitment tx
+
+ found_prev = true;
+ break;
+ }
+ }
+ assert!(found_prev);
+
+ let mut res = Vec::new();
+ mem::swap(&mut *node_txn, &mut res);
+ res
+ }
+
+ fn get_announce_close_broadcast_events(nodes: &Vec<Node>, a: usize, b: usize) {
+ let events_1 = nodes[a].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_1.len(), 1);
+ let as_update = match events_1[0] {
+ MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+ msg.clone()
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ let events_2 = nodes[b].node.get_and_clear_pending_msg_events();
+ assert_eq!(events_2.len(), 1);
+ let bs_update = match events_2[0] {
+ MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+ msg.clone()
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ for node in nodes {
+ node.router.handle_channel_update(&as_update).unwrap();
+ node.router.handle_channel_update(&bs_update).unwrap();
+ }
+ }
+
+ macro_rules! expect_pending_htlcs_forwardable {
+ ($node: expr) => {{
+ let events = $node.node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PendingHTLCsForwardable { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
+ $node.node.channel_state.lock().unwrap().next_forward = Instant::now();
+ $node.node.process_pending_htlc_forwards();
+ }}
+ }
+
+ #[test]
+ fn channel_reserve_test() {
+ use util::rng;
+ use std::sync::atomic::Ordering;
+ use ln::msgs::HandleError;
+
+ macro_rules! get_channel_value_stat {
+ ($node: expr, $channel_id: expr) => {{
+ let chan_lock = $node.node.channel_state.lock().unwrap();
+ let chan = chan_lock.by_id.get(&$channel_id).unwrap();
+ chan.get_value_stat()
+ }}
+ }
+
+ let mut nodes = create_network(3);
+ let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1900, 1001);
+ let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1900, 1001);
+
+ let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
+ let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
+
+ let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
+ let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
+
+ macro_rules! get_route_and_payment_hash {
+ ($recv_value: expr) => {{
+ let route = nodes[0].router.get_route(&nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV).unwrap();
+ let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
+ (route, payment_hash, payment_preimage)
+ }}
+ };
+
+ macro_rules! expect_forward {
+ ($node: expr) => {{
+ let mut events = $node.node.get_and_clear_pending_msg_events();
+ assert_eq!(events.len(), 1);
+ check_added_monitors!($node, 1);
+ let payment_event = SendEvent::from_event(events.remove(0));
+ payment_event
+ }}
+ }
+
+ macro_rules! expect_payment_received {
+ ($node: expr, $expected_payment_hash: expr, $expected_recv_value: expr) => {
+ let events = $node.node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentReceived { ref payment_hash, amt } => {
+ assert_eq!($expected_payment_hash, *payment_hash);
+ assert_eq!($expected_recv_value, amt);