Drop verbose log entries in BP when no network graph is provided
[rust-lightning] / lightning / src / ln / payment_tests.rs
index cc8f4ee27e8372922109e7e4268f244aba764a7d..60310e9a3df33aa445af24c33fd574753d468e98 100644 (file)
 //! serialization ordering between ChannelManager/ChannelMonitors and ensuring we can still retry
 //! payments thereafter.
 
-use chain::{ChannelMonitorUpdateErr, Confirm, Listen, Watch};
-use chain::channelmonitor::{ANTI_REORG_DELAY, ChannelMonitor, LATENCY_GRACE_PERIOD_BLOCKS};
-use chain::transaction::OutPoint;
-use chain::keysinterface::KeysInterface;
-use ln::channel::EXPIRE_PREV_CONFIG_TICKS;
-use ln::channelmanager::{BREAKDOWN_TIMEOUT, ChannelManager, ChannelManagerReadArgs, MPP_TIMEOUT_TICKS, PaymentId, PaymentSendFailure};
-use ln::features::{InitFeatures, InvoiceFeatures};
-use ln::msgs;
-use ln::msgs::ChannelMessageHandler;
-use routing::router::{PaymentParameters, get_route};
-use util::events::{ClosureReason, Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider};
-use util::test_utils;
-use util::errors::APIError;
-use util::enforcing_trait_impls::EnforcingSigner;
-use util::ser::{ReadableArgs, Writeable};
-use io;
-
-use bitcoin::{Block, BlockHeader, BlockHash, TxMerkleNode};
+use crate::chain::{ChannelMonitorUpdateStatus, Confirm, Listen, Watch};
+use crate::chain::channelmonitor::{ANTI_REORG_DELAY, LATENCY_GRACE_PERIOD_BLOCKS};
+use crate::chain::transaction::OutPoint;
+use crate::chain::keysinterface::KeysInterface;
+use crate::ln::channel::EXPIRE_PREV_CONFIG_TICKS;
+use crate::ln::channelmanager::{self, BREAKDOWN_TIMEOUT, ChannelManager, MPP_TIMEOUT_TICKS, MIN_CLTV_EXPIRY_DELTA, PaymentId, PaymentSendFailure, IDEMPOTENCY_TIMEOUT_TICKS};
+use crate::ln::msgs;
+use crate::ln::msgs::ChannelMessageHandler;
+use crate::routing::router::{PaymentParameters, get_route};
+use crate::util::events::{ClosureReason, Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider};
+use crate::util::test_utils;
+use crate::util::errors::APIError;
+use crate::util::ser::Writeable;
+
+use bitcoin::{Block, BlockHeader, TxMerkleNode};
 use bitcoin::hashes::Hash;
 use bitcoin::network::constants::Network;
 
-use prelude::*;
+use crate::prelude::*;
 
-use ln::functional_test_utils::*;
+use crate::ln::functional_test_utils::*;
+use crate::routing::gossip::NodeId;
 
 #[test]
 fn retry_single_path_payment() {
@@ -43,8 +41,8 @@ fn retry_single_path_payment() {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
+       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
        // Rebalance to find a route
        send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
 
@@ -54,7 +52,8 @@ fn retry_single_path_payment() {
        send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
 
        // Make sure the payment fails on the first hop.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       let payment_id = PaymentId(payment_hash.0);
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), payment_id).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
@@ -96,10 +95,10 @@ fn mpp_failure() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
 
        let (mut route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(&nodes[0], nodes[3], 100000);
        let path = route.paths[0].clone();
@@ -121,10 +120,10 @@ fn mpp_retry() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
-       let (chan_3_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
-       let (chan_4_update, _, chan_4_id, _) = create_announced_chan_between_nodes(&nodes, 3, 2, InitFeatures::known(), InitFeatures::known());
+       let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_3_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_4_update, _, chan_4_id, _) = create_announced_chan_between_nodes(&nodes, 3, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
        // Rebalance
        send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
 
@@ -139,7 +138,8 @@ fn mpp_retry() {
        route.paths[1][1].short_channel_id = chan_4_update.contents.short_channel_id;
 
        // Initiate the MPP payment.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       let payment_id = PaymentId(payment_hash.0);
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), payment_id).unwrap();
        check_added_monitors!(nodes[0], 2); // one monitor per path
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 2);
@@ -207,10 +207,10 @@ fn do_mpp_receive_timeout(send_partial_mpp: bool) {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
-       let (chan_3_update, _, chan_3_id, _) = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
-       let (chan_4_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
+       let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_3_update, _, chan_3_id, _) = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (chan_4_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[3], 100_000);
        let path = route.paths[0].clone();
@@ -223,7 +223,7 @@ fn do_mpp_receive_timeout(send_partial_mpp: bool) {
        route.paths[1][1].short_channel_id = chan_4_update.contents.short_channel_id;
 
        // Initiate the MPP payment.
-       let _ = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 2); // one monitor per path
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 2);
@@ -280,8 +280,8 @@ fn retry_expired_payment() {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
+       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
        // Rebalance to find a route
        send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
 
@@ -291,7 +291,7 @@ fn retry_expired_payment() {
        send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
 
        // Make sure the payment fails on the first hop.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
@@ -315,7 +315,7 @@ fn retry_expired_payment() {
        connect_blocks(&nodes[0], 3);
 
        // Retry the payment and make sure it errors as expected.
-       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
+       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, PaymentId(payment_hash.0)) {
                assert!(err.contains("not found"));
        } else {
                panic!("Unexpected error");
@@ -335,14 +335,14 @@ fn no_pending_leak_on_initial_send_failure() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
 
        nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
        nodes[1].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
 
-       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)),
+       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)),
                true, APIError::ChannelUnavailable { ref err },
                assert_eq!(err, "Peer for first hop currently disconnected/pending monitor update!"));
 
@@ -366,11 +366,11 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let nodes_0_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
-       let (_, _, chan_id_2, _) = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
+       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+       let (_, _, chan_id_2, _) = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        // Serialize the ChannelManager prior to sending payments
        let nodes_0_serialized = nodes[0].node.encode();
@@ -379,7 +379,7 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        // out and retry.
        let (route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 1_000_000);
        let (payment_preimage_1, payment_hash_1, _, payment_id_1) = send_along_route(&nodes[0], route.clone(), &[&nodes[1], &nodes[2]], 1_000_000);
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
 
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
@@ -408,38 +408,8 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
 
        // The ChannelMonitor should always be the latest version, as we're required to persist it
        // during the `commitment_signed_dance!()`.
-       let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
-       get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
-
-       persister = test_utils::TestPersister::new();
-       let keys_manager = &chanmon_cfgs[0].keys_manager;
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
-       nodes[0].chain_monitor = &new_chain_monitor;
-       let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
-       let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
-               &mut chan_0_monitor_read, keys_manager).unwrap();
-       assert!(chan_0_monitor_read.is_empty());
-
-       let mut nodes_0_read = &nodes_0_serialized[..];
-       let (_, nodes_0_deserialized_tmp) = {
-               let mut channel_monitors = HashMap::new();
-               channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
-                       default_config: test_default_channel_config(),
-                       keys_manager,
-                       fee_estimator: node_cfgs[0].fee_estimator,
-                       chain_monitor: nodes[0].chain_monitor,
-                       tx_broadcaster: nodes[0].tx_broadcaster.clone(),
-                       logger: nodes[0].logger,
-                       channel_monitors,
-               }).unwrap()
-       };
-       nodes_0_deserialized = nodes_0_deserialized_tmp;
-       assert!(nodes_0_read.is_empty());
-
-       assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
-       nodes[0].node = &nodes_0_deserialized;
-       check_added_monitors!(nodes[0], 1);
+       let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
+       reload_node!(nodes[0], test_default_channel_config(), &nodes_0_serialized, &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
 
        // On reload, the ChannelManager should realize it is stale compared to the ChannelMonitor and
        // force-close the channel.
@@ -451,13 +421,13 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        assert_eq!(as_broadcasted_txn[0], as_commitment_tx);
 
        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(), &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
        assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
 
        // Now nodes[1] should send a channel reestablish, which nodes[0] will respond to with an
        // error, as the channel has hit the chain.
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
-       let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       let bs_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
        nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
        let as_err = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(as_err.len(), 1);
@@ -483,6 +453,7 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &htlc_fulfill_updates.update_fulfill_htlcs[0]);
        check_added_monitors!(nodes[1], 1);
        commitment_signed_dance!(nodes[1], nodes[2], htlc_fulfill_updates.commitment_signed, false);
+       expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], None, false, false);
 
        if confirm_before_reload {
                let best_block = nodes[0].blocks.lock().unwrap().last().unwrap().clone();
@@ -492,14 +463,13 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        // Create a new channel on which to retry the payment before we fail the payment via the
        // HTLC-Timeout transaction. This avoids ChannelManager timing out the payment due to us
        // connecting several blocks while creating the channel (implying time has passed).
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
        assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
 
        mine_transaction(&nodes[1], &as_commitment_tx);
        let bs_htlc_claim_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
        assert_eq!(bs_htlc_claim_txn.len(), 1);
        check_spends!(bs_htlc_claim_txn[0], as_commitment_tx);
-       expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], None, false, false);
 
        if !confirm_before_reload {
                mine_transaction(&nodes[0], &as_commitment_tx);
@@ -508,13 +478,8 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        expect_payment_sent!(nodes[0], payment_preimage_1);
        connect_blocks(&nodes[0], TEST_FINAL_CLTV*4 + 20);
        let as_htlc_timeout_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
-       assert_eq!(as_htlc_timeout_txn.len(), 3);
-       let (first_htlc_timeout_tx, second_htlc_timeout_tx) = if as_htlc_timeout_txn[0] == as_commitment_tx {
-               (&as_htlc_timeout_txn[1], &as_htlc_timeout_txn[2])
-       } else {
-               assert_eq!(as_htlc_timeout_txn[2], as_commitment_tx);
-               (&as_htlc_timeout_txn[0], &as_htlc_timeout_txn[1])
-       };
+       assert_eq!(as_htlc_timeout_txn.len(), 2);
+       let (first_htlc_timeout_tx, second_htlc_timeout_tx) = (&as_htlc_timeout_txn[0], &as_htlc_timeout_txn[1]);
        check_spends!(first_htlc_timeout_tx, as_commitment_tx);
        check_spends!(second_htlc_timeout_tx, as_commitment_tx);
        if first_htlc_timeout_tx.input[0].previous_output == bs_htlc_claim_txn[0].input[0].previous_output {
@@ -548,7 +513,7 @@ fn do_retry_with_no_persist(confirm_before_reload: bool) {
        }
 
        assert!(nodes[0].node.retry_payment(&new_route, payment_id_1).is_err()); // Shouldn't be allowed to retry a fulfilled payment
-       nodes[0].node.retry_payment(&new_route, payment_id).unwrap();
+       nodes[0].node.retry_payment(&new_route, PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
@@ -563,6 +528,179 @@ fn retry_with_no_persist() {
        do_retry_with_no_persist(false);
 }
 
+fn do_test_completed_payment_not_retryable_on_reload(use_dust: bool) {
+       // Test that an off-chain completed payment is not retryable on restart. This was previously
+       // broken for dust payments, but we test for both dust and non-dust payments.
+       //
+       // `use_dust` switches to using a dust HTLC, which results in the HTLC not having an on-chain
+       // output at all.
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+
+       let mut manually_accept_config = test_default_channel_config();
+       manually_accept_config.manually_accept_inbound_channels = true;
+
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(manually_accept_config), None]);
+
+       let first_persister: test_utils::TestPersister;
+       let first_new_chain_monitor: test_utils::TestChainMonitor;
+       let first_nodes_0_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let second_persister: test_utils::TestPersister;
+       let second_new_chain_monitor: test_utils::TestChainMonitor;
+       let second_nodes_0_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let third_persister: test_utils::TestPersister;
+       let third_new_chain_monitor: test_utils::TestChainMonitor;
+       let third_nodes_0_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       // Because we set nodes[1] to manually accept channels, just open a 0-conf channel.
+       let (funding_tx, chan_id) = open_zero_conf_channel(&nodes[0], &nodes[1], None);
+       confirm_transaction(&nodes[0], &funding_tx);
+       confirm_transaction(&nodes[1], &funding_tx);
+       // Ignore the announcement_signatures messages
+       nodes[0].node.get_and_clear_pending_msg_events();
+       nodes[1].node.get_and_clear_pending_msg_events();
+       let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+
+       // Serialize the ChannelManager prior to sending payments
+       let mut nodes_0_serialized = nodes[0].node.encode();
+
+       let route = get_route_and_payment_hash!(nodes[0], nodes[2], if use_dust { 1_000 } else { 1_000_000 }).0;
+       let (payment_preimage, payment_hash, payment_secret, payment_id) = send_along_route(&nodes[0], route, &[&nodes[1], &nodes[2]], if use_dust { 1_000 } else { 1_000_000 });
+
+       // The ChannelMonitor should always be the latest version, as we're required to persist it
+       // during the `commitment_signed_dance!()`.
+       let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
+
+       reload_node!(nodes[0], test_default_channel_config(), nodes_0_serialized, &[&chan_0_monitor_serialized], first_persister, first_new_chain_monitor, first_nodes_0_deserialized);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+
+       // On reload, the ChannelManager should realize it is stale compared to the ChannelMonitor and
+       // force-close the channel.
+       check_closed_event!(nodes[0], 1, ClosureReason::OutdatedChannelManager);
+       assert!(nodes[0].node.list_channels().is_empty());
+       assert!(nodes[0].node.has_pending_payments());
+       assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
+
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+       // Now nodes[1] should send a channel reestablish, which nodes[0] will respond to with an
+       // error, as the channel has hit the chain.
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       let bs_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
+       nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
+       let as_err = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(as_err.len(), 1);
+       let bs_commitment_tx;
+       match as_err[0] {
+               MessageSendEvent::HandleError { node_id, action: msgs::ErrorAction::SendErrorMessage { ref msg } } => {
+                       assert_eq!(node_id, nodes[1].node.get_our_node_id());
+                       nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), msg);
+                       check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: "Failed to find corresponding channel".to_string() });
+                       check_added_monitors!(nodes[1], 1);
+                       bs_commitment_tx = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+               },
+               _ => panic!("Unexpected event"),
+       }
+       check_closed_broadcast!(nodes[1], false);
+
+       // Now fail back the payment from nodes[2] to nodes[1]. This doesn't really matter as the
+       // previous hop channel is already on-chain, but it makes nodes[2] willing to see additional
+       // incoming HTLCs with the same payment hash later.
+       nodes[2].node.fail_htlc_backwards(&payment_hash);
+       expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[2], [HTLCDestination::FailedPayment { payment_hash }]);
+       check_added_monitors!(nodes[2], 1);
+
+       let htlc_fulfill_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &htlc_fulfill_updates.update_fail_htlcs[0]);
+       commitment_signed_dance!(nodes[1], nodes[2], htlc_fulfill_updates.commitment_signed, false);
+       expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1],
+               [HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_id_2 }]);
+
+       // Connect the HTLC-Timeout transaction, timing out the HTLC on both nodes (but not confirming
+       // the HTLC-Timeout transaction beyond 1 conf). For dust HTLCs, the HTLC is considered resolved
+       // after the commitment transaction, so always connect the commitment transaction.
+       mine_transaction(&nodes[0], &bs_commitment_tx[0]);
+       mine_transaction(&nodes[1], &bs_commitment_tx[0]);
+       if !use_dust {
+               connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1 + (MIN_CLTV_EXPIRY_DELTA as u32));
+               connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1 + (MIN_CLTV_EXPIRY_DELTA as u32));
+               let as_htlc_timeout = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+               check_spends!(as_htlc_timeout[0], bs_commitment_tx[0]);
+               assert_eq!(as_htlc_timeout.len(), 1);
+
+               mine_transaction(&nodes[0], &as_htlc_timeout[0]);
+               // nodes[0] may rebroadcast (or RBF-bump) its HTLC-Timeout, so wipe the announced set.
+               nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
+               mine_transaction(&nodes[1], &as_htlc_timeout[0]);
+       }
+
+       // Create a new channel on which to retry the payment before we fail the payment via the
+       // HTLC-Timeout transaction. This avoids ChannelManager timing out the payment due to us
+       // connecting several blocks while creating the channel (implying time has passed).
+       // We do this with a zero-conf channel to avoid connecting blocks as a side-effect.
+       let (_, chan_id_3) = open_zero_conf_channel(&nodes[0], &nodes[1], None);
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
+
+       // If we attempt to retry prior to the HTLC-Timeout (or commitment transaction, for dust HTLCs)
+       // confirming, we will fail as it's considered still-pending...
+       let (new_route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], if use_dust { 1_000 } else { 1_000_000 });
+       assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
+       assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+       // After ANTI_REORG_DELAY confirmations, the HTLC should be failed and we can try the payment
+       // again. We serialize the node first as we'll then test retrying the HTLC after a restart
+       // (which should also still work).
+       connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
+       connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
+       // We set mpp_parts_remain to avoid having abandon_payment called
+       expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain());
+
+       let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
+       let chan_1_monitor_serialized = get_monitor!(nodes[0], chan_id_3).encode();
+       nodes_0_serialized = nodes[0].node.encode();
+
+       assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_ok());
+       assert!(!nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+       reload_node!(nodes[0], test_default_channel_config(), nodes_0_serialized, &[&chan_0_monitor_serialized, &chan_1_monitor_serialized], second_persister, second_new_chain_monitor, second_nodes_0_deserialized);
+       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), (0, 0), (false, false));
+
+       // Now resend the payment, delivering the HTLC and actually claiming it this time. This ensures
+       // the payment is not (spuriously) listed as still pending.
+       assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_ok());
+       check_added_monitors!(nodes[0], 1);
+       pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], if use_dust { 1_000 } else { 1_000_000 }, payment_hash, payment_secret);
+       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
+
+       assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
+       assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+       let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
+       let chan_1_monitor_serialized = get_monitor!(nodes[0], chan_id_3).encode();
+       nodes_0_serialized = nodes[0].node.encode();
+
+       // Ensure that after reload we cannot retry the payment.
+       reload_node!(nodes[0], test_default_channel_config(), nodes_0_serialized, &[&chan_0_monitor_serialized, &chan_1_monitor_serialized], third_persister, third_new_chain_monitor, third_nodes_0_deserialized);
+       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), (0, 0), (false, false));
+
+       assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
+       assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+}
+
+#[test]
+fn test_completed_payment_not_retryable_on_reload() {
+       do_test_completed_payment_not_retryable_on_reload(true);
+       do_test_completed_payment_not_retryable_on_reload(false);
+}
+
+
 fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, confirm_commitment_tx: bool, payment_timeout: bool) {
        // When a Channel is closed, any outbound HTLCs which were relayed through it are simply
        // dropped when the Channel is. From there, the ChannelManager relies on the ChannelMonitor
@@ -577,10 +715,10 @@ fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, co
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let nodes_0_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        // Route a payment, but force-close the channel before the HTLC fulfill message arrives at
        // nodes[0].
@@ -634,10 +772,10 @@ fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, co
        }
 
        // Now connect the HTLC claim transaction with the ChainMonitor-generated ChannelMonitor update
-       // returning TemporaryFailure. This should cause the claim event to never make its way to the
+       // returning InProgress. This should cause the claim event to never make its way to the
        // ChannelManager.
        chanmon_cfgs[0].persister.chain_sync_monitor_persistences.lock().unwrap().clear();
-       chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure));
+       chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
 
        if payment_timeout {
                connect_blocks(&nodes[0], 1);
@@ -655,21 +793,20 @@ fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, co
 
        // If we persist the ChannelManager here, we should get the PaymentSent event after
        // deserialization.
-       let mut chan_manager_serialized = test_utils::TestVecWriter(Vec::new());
+       let mut chan_manager_serialized = Vec::new();
        if !persist_manager_post_event {
-               nodes[0].node.write(&mut chan_manager_serialized).unwrap();
+               chan_manager_serialized = nodes[0].node.encode();
        }
 
        // Now persist the ChannelMonitor and inform the ChainMonitor that we're done, generating the
        // payment sent event.
-       chanmon_cfgs[0].persister.set_update_ret(Ok(()));
-       let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
-       get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
+       chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
+       let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
        for update in mon_updates {
                nodes[0].chain_monitor.chain_monitor.channel_monitor_updated(funding_txo, update).unwrap();
        }
        if payment_timeout {
-               expect_payment_failed!(nodes[0], payment_hash, true);
+               expect_payment_failed!(nodes[0], payment_hash, false);
        } else {
                expect_payment_sent!(nodes[0], payment_preimage);
        }
@@ -677,43 +814,16 @@ fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, co
        // If we persist the ChannelManager after we get the PaymentSent event, we shouldn't get it
        // twice.
        if persist_manager_post_event {
-               nodes[0].node.write(&mut chan_manager_serialized).unwrap();
+               chan_manager_serialized = nodes[0].node.encode();
        }
 
        // Now reload nodes[0]...
-       persister = test_utils::TestPersister::new();
-       let keys_manager = &chanmon_cfgs[0].keys_manager;
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
-       nodes[0].chain_monitor = &new_chain_monitor;
-       let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
-       let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
-               &mut chan_0_monitor_read, keys_manager).unwrap();
-       assert!(chan_0_monitor_read.is_empty());
-
-       let (_, nodes_0_deserialized_tmp) = {
-               let mut channel_monitors = HashMap::new();
-               channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>
-                       ::read(&mut io::Cursor::new(&chan_manager_serialized.0[..]), ChannelManagerReadArgs {
-                               default_config: Default::default(),
-                               keys_manager,
-                               fee_estimator: node_cfgs[0].fee_estimator,
-                               chain_monitor: nodes[0].chain_monitor,
-                               tx_broadcaster: nodes[0].tx_broadcaster.clone(),
-                               logger: nodes[0].logger,
-                               channel_monitors,
-                       }).unwrap()
-       };
-       nodes_0_deserialized = nodes_0_deserialized_tmp;
-
-       assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
-       check_added_monitors!(nodes[0], 1);
-       nodes[0].node = &nodes_0_deserialized;
+       reload_node!(nodes[0], &chan_manager_serialized, &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
 
        if persist_manager_post_event {
                assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
        } else if payment_timeout {
-               expect_payment_failed!(nodes[0], payment_hash, true);
+               expect_payment_failed!(nodes[0], payment_hash, false);
        } else {
                expect_payment_sent!(nodes[0], payment_preimage);
        }
@@ -749,18 +859,16 @@ fn test_fulfill_restart_failure() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let nodes_1_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let nodes_1_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
+       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 100_000);
 
        // The simplest way to get a failure after a fulfill is to reload nodes[1] from a state
        // pre-fulfill, which we do by serializing it here.
-       let mut chan_manager_serialized = test_utils::TestVecWriter(Vec::new());
-       nodes[1].node.write(&mut chan_manager_serialized).unwrap();
-       let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
-       get_monitor!(nodes[1], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
+       let chan_manager_serialized = nodes[1].node.encode();
+       let chan_0_monitor_serialized = get_monitor!(nodes[1], chan_id).encode();
 
        nodes[1].node.claim_funds(payment_preimage);
        check_added_monitors!(nodes[1], 1);
@@ -771,34 +879,7 @@ fn test_fulfill_restart_failure() {
        expect_payment_sent_without_paths!(nodes[0], payment_preimage);
 
        // Now reload nodes[1]...
-       persister = test_utils::TestPersister::new();
-       let keys_manager = &chanmon_cfgs[1].keys_manager;
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[1].chain_source), nodes[1].tx_broadcaster.clone(), nodes[1].logger, node_cfgs[1].fee_estimator, &persister, keys_manager);
-       nodes[1].chain_monitor = &new_chain_monitor;
-       let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
-       let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
-               &mut chan_0_monitor_read, keys_manager).unwrap();
-       assert!(chan_0_monitor_read.is_empty());
-
-       let (_, nodes_1_deserialized_tmp) = {
-               let mut channel_monitors = HashMap::new();
-               channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>
-                       ::read(&mut io::Cursor::new(&chan_manager_serialized.0[..]), ChannelManagerReadArgs {
-                               default_config: Default::default(),
-                               keys_manager,
-                               fee_estimator: node_cfgs[1].fee_estimator,
-                               chain_monitor: nodes[1].chain_monitor,
-                               tx_broadcaster: nodes[1].tx_broadcaster.clone(),
-                               logger: nodes[1].logger,
-                               channel_monitors,
-                       }).unwrap()
-       };
-       nodes_1_deserialized = nodes_1_deserialized_tmp;
-
-       assert!(nodes[1].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
-       check_added_monitors!(nodes[1], 1);
-       nodes[1].node = &nodes_1_deserialized;
+       reload_node!(nodes[1], &chan_manager_serialized, &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_1_deserialized);
 
        nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
@@ -821,14 +902,14 @@ fn get_ldk_payment_preimage() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        let amt_msat = 60_000;
        let expiry_secs = 60 * 60;
        let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(amt_msat), expiry_secs).unwrap();
 
        let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id())
-               .with_features(InvoiceFeatures::known());
+               .with_features(channelmanager::provided_invoice_features());
        let scorer = test_utils::TestScorer::with_penalty(0);
        let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
        let random_seed_bytes = keys_manager.get_secure_random_bytes();
@@ -836,7 +917,7 @@ fn get_ldk_payment_preimage() {
                &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(),
                Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
                amt_msat, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
-       let _payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
 
        // Make sure to use `get_payment_preimage`
@@ -854,8 +935,8 @@ fn sent_probe_is_probe_of_sending_node() {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        // First check we refuse to build a single-hop probe
        let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[1], 100_000);
@@ -884,8 +965,8 @@ fn successful_probe_yields_event() {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], 100_000);
 
@@ -938,8 +1019,8 @@ fn failed_probe_yields_event() {
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 90000000, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 90000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
 
        let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id());
 
@@ -975,3 +1056,317 @@ fn failed_probe_yields_event() {
                _ => panic!(),
        };
 }
+
+#[test]
+fn onchain_failed_probe_yields_event() {
+       // Tests that an attempt to probe over a channel that is eventaully closed results in a failure
+       // event.
+       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 nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+       create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+
+       let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id());
+
+       // Send a dust HTLC, which will be treated as if it timed out once the channel hits the chain.
+       let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], &payment_params, 1_000, 42);
+       let (payment_hash, payment_id) = nodes[0].node.send_probe(route.paths[0].clone()).unwrap();
+
+       // node[0] -- update_add_htlcs -> node[1]
+       check_added_monitors!(nodes[0], 1);
+       let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+       let probe_event = SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), updates);
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &probe_event.msgs[0]);
+       check_added_monitors!(nodes[1], 0);
+       commitment_signed_dance!(nodes[1], nodes[0], probe_event.commitment_msg, false);
+       expect_pending_htlcs_forwardable!(nodes[1]);
+
+       check_added_monitors!(nodes[1], 1);
+       let _ = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
+
+       // Don't bother forwarding the HTLC onwards and just confirm the force-close transaction on
+       // Node A, which after 6 confirmations should result in a probe failure event.
+       let bs_txn = get_local_commitment_txn!(nodes[1], chan_id);
+       confirm_transaction(&nodes[0], &bs_txn[0]);
+       check_closed_broadcast!(&nodes[0], true);
+       check_added_monitors!(nodes[0], 1);
+
+       let mut events = nodes[0].node.get_and_clear_pending_events();
+       assert_eq!(events.len(), 2);
+       let mut found_probe_failed = false;
+       for event in events.drain(..) {
+               match event {
+                       Event::ProbeFailed { payment_id: ev_pid, payment_hash: ev_ph, .. } => {
+                               assert_eq!(payment_id, ev_pid);
+                               assert_eq!(payment_hash, ev_ph);
+                               found_probe_failed = true;
+                       },
+                       Event::ChannelClosed { .. } => {},
+                       _ => panic!(),
+               }
+       }
+       assert!(found_probe_failed);
+}
+
+#[test]
+fn claimed_send_payment_idempotent() {
+       // Tests that `send_payment` (and friends) are (reasonably) idempotent.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+
+       let (route, second_payment_hash, second_payment_preimage, second_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
+       let (first_payment_preimage, _, _, payment_id) = send_along_route(&nodes[0], route.clone(), &[&nodes[1]], 100_000);
+
+       macro_rules! check_send_rejected {
+               () => {
+                       // If we try to resend a new payment with a different payment_hash but with the same
+                       // payment_id, it should be rejected.
+                       let send_result = nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret), payment_id);
+                       match send_result {
+                               Err(PaymentSendFailure::DuplicatePayment) => {},
+                               _ => panic!("Unexpected send result: {:?}", send_result),
+                       }
+
+                       // Further, if we try to send a spontaneous payment with the same payment_id it should
+                       // also be rejected.
+                       let send_result = nodes[0].node.send_spontaneous_payment(&route, None, payment_id);
+                       match send_result {
+                               Err(PaymentSendFailure::DuplicatePayment) => {},
+                               _ => panic!("Unexpected send result: {:?}", send_result),
+                       }
+               }
+       }
+
+       check_send_rejected!();
+
+       // Claim the payment backwards, but note that the PaymentSent event is still pending and has
+       // not been seen by the user. At this point, from the user perspective nothing has changed, so
+       // we must remain just as idempotent as we were before.
+       do_claim_payment_along_route(&nodes[0], &[&[&nodes[1]]], false, first_payment_preimage);
+
+       for _ in 0..=IDEMPOTENCY_TIMEOUT_TICKS {
+               nodes[0].node.timer_tick_occurred();
+       }
+
+       check_send_rejected!();
+
+       // Once the user sees and handles the `PaymentSent` event, we expect them to no longer call
+       // `send_payment`, and our idempotency guarantees are off - they should have atomically marked
+       // the payment complete. However, they could have called `send_payment` while the event was
+       // being processed, leading to a race in our idempotency guarantees. Thus, even immediately
+       // after the event is handled a duplicate payment should sitll be rejected.
+       expect_payment_sent!(&nodes[0], first_payment_preimage, Some(0));
+       check_send_rejected!();
+
+       // If relatively little time has passed, a duplicate payment should still fail.
+       nodes[0].node.timer_tick_occurred();
+       check_send_rejected!();
+
+       // However, after some time has passed (at least more than the one timer tick above), a
+       // duplicate payment should go through, as ChannelManager should no longer have any remaining
+       // references to the old payment data.
+       for _ in 0..IDEMPOTENCY_TIMEOUT_TICKS {
+               nodes[0].node.timer_tick_occurred();
+       }
+
+       nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret), payment_id).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       pass_along_route(&nodes[0], &[&[&nodes[1]]], 100_000, second_payment_hash, second_payment_secret);
+       claim_payment(&nodes[0], &[&nodes[1]], second_payment_preimage);
+}
+
+#[test]
+fn abandoned_send_payment_idempotent() {
+       // Tests that `send_payment` (and friends) allow duplicate PaymentIds immediately after
+       // abandon_payment.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+
+       let (route, second_payment_hash, second_payment_preimage, second_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
+       let (_, first_payment_hash, _, payment_id) = send_along_route(&nodes[0], route.clone(), &[&nodes[1]], 100_000);
+
+       macro_rules! check_send_rejected {
+               () => {
+                       // If we try to resend a new payment with a different payment_hash but with the same
+                       // payment_id, it should be rejected.
+                       let send_result = nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret), payment_id);
+                       match send_result {
+                               Err(PaymentSendFailure::DuplicatePayment) => {},
+                               _ => panic!("Unexpected send result: {:?}", send_result),
+                       }
+
+                       // Further, if we try to send a spontaneous payment with the same payment_id it should
+                       // also be rejected.
+                       let send_result = nodes[0].node.send_spontaneous_payment(&route, None, payment_id);
+                       match send_result {
+                               Err(PaymentSendFailure::DuplicatePayment) => {},
+                               _ => panic!("Unexpected send result: {:?}", send_result),
+                       }
+               }
+       }
+
+       check_send_rejected!();
+
+       nodes[1].node.fail_htlc_backwards(&first_payment_hash);
+       expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], [HTLCDestination::FailedPayment { payment_hash: first_payment_hash }]);
+
+       pass_failed_payment_back_no_abandon(&nodes[0], &[&[&nodes[1]]], false, first_payment_hash);
+       check_send_rejected!();
+
+       // Until we abandon the payment, no matter how many timer ticks pass, we still cannot reuse the
+       // PaymentId.
+       for _ in 0..=IDEMPOTENCY_TIMEOUT_TICKS {
+               nodes[0].node.timer_tick_occurred();
+       }
+       check_send_rejected!();
+
+       nodes[0].node.abandon_payment(payment_id);
+       get_event!(nodes[0], Event::PaymentFailed);
+
+       // However, we can reuse the PaymentId immediately after we `abandon_payment`.
+       nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret), payment_id).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       pass_along_route(&nodes[0], &[&[&nodes[1]]], 100_000, second_payment_hash, second_payment_secret);
+       claim_payment(&nodes[0], &[&nodes[1]], second_payment_preimage);
+}
+
+#[test]
+fn test_trivial_inflight_htlc_tracking(){
+       // In this test, we test three scenarios:
+       // (1) Sending + claiming a payment successfully should return `None` when querying InFlightHtlcs
+       // (2) Sending a payment without claiming it should return the payment's value (500000) when querying InFlightHtlcs
+       // (3) After we claim the payment sent in (2), InFlightHtlcs should return `None` for the query.
+       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 nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let (_, _, chan_1_id, _) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (_, _, chan_2_id, _) = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+
+       // Send and claim the payment. Inflight HTLCs should be empty.
+       send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 500000);
+       {
+               let inflight_htlcs = node_chanmgrs[0].compute_inflight_htlcs();
+
+               let node_0_channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let node_1_channel_lock = nodes[1].node.channel_state.lock().unwrap();
+               let channel_1 = node_0_channel_lock.by_id.get(&chan_1_id).unwrap();
+               let channel_2 = node_1_channel_lock.by_id.get(&chan_2_id).unwrap();
+
+               let chan_1_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[0].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
+                       channel_1.get_short_channel_id().unwrap()
+               );
+               let chan_2_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[2].node.get_our_node_id()),
+                       channel_2.get_short_channel_id().unwrap()
+               );
+
+               assert_eq!(chan_1_used_liquidity, None);
+               assert_eq!(chan_2_used_liquidity, None);
+       }
+
+       // Send the payment, but do not claim it. Our inflight HTLCs should contain the pending payment.
+       let (payment_preimage, _,  _) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 500000);
+       {
+               let inflight_htlcs = node_chanmgrs[0].compute_inflight_htlcs();
+
+               let node_0_channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let node_1_channel_lock = nodes[1].node.channel_state.lock().unwrap();
+               let channel_1 = node_0_channel_lock.by_id.get(&chan_1_id).unwrap();
+               let channel_2 = node_1_channel_lock.by_id.get(&chan_2_id).unwrap();
+
+               let chan_1_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[0].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
+                       channel_1.get_short_channel_id().unwrap()
+               );
+               let chan_2_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[2].node.get_our_node_id()),
+                       channel_2.get_short_channel_id().unwrap()
+               );
+
+               // First hop accounts for expected 1000 msat fee
+               assert_eq!(chan_1_used_liquidity, Some(501000));
+               assert_eq!(chan_2_used_liquidity, Some(500000));
+       }
+
+       // Now, let's claim the payment. This should result in the used liquidity to return `None`.
+       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
+       {
+               let inflight_htlcs = node_chanmgrs[0].compute_inflight_htlcs();
+
+               let node_0_channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let node_1_channel_lock = nodes[1].node.channel_state.lock().unwrap();
+               let channel_1 = node_0_channel_lock.by_id.get(&chan_1_id).unwrap();
+               let channel_2 = node_1_channel_lock.by_id.get(&chan_2_id).unwrap();
+
+               let chan_1_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[0].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
+                       channel_1.get_short_channel_id().unwrap()
+               );
+               let chan_2_used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[2].node.get_our_node_id()),
+                       channel_2.get_short_channel_id().unwrap()
+               );
+
+               assert_eq!(chan_1_used_liquidity, None);
+               assert_eq!(chan_2_used_liquidity, None);
+       }
+}
+
+#[test]
+fn test_holding_cell_inflight_htlcs() {
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+       let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+
+       let (route, payment_hash_1, _, payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
+       let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
+
+       // Queue up two payments - one will be delivered right away, one immediately goes into the
+       // holding cell as nodes[0] is AwaitingRAA.
+       {
+               nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1), PaymentId(payment_hash_1.0)).unwrap();
+               check_added_monitors!(nodes[0], 1);
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2), PaymentId(payment_hash_2.0)).unwrap();
+               check_added_monitors!(nodes[0], 0);
+       }
+
+       let inflight_htlcs = node_chanmgrs[0].compute_inflight_htlcs();
+
+       {
+               let channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let channel = channel_lock.by_id.get(&channel_id).unwrap();
+
+               let used_liquidity = inflight_htlcs.used_liquidity_msat(
+                       &NodeId::from_pubkey(&nodes[0].node.get_our_node_id()) ,
+                       &NodeId::from_pubkey(&nodes[1].node.get_our_node_id()),
+                       channel.get_short_channel_id().unwrap()
+               );
+
+               assert_eq!(used_liquidity, Some(2000000));
+       }
+
+       // Clear pending events so test doesn't throw a "Had excess message on node..." error
+       nodes[0].node.get_and_clear_pending_msg_events();
+}