Add `networks` TLV to `Init`'s TLV stream
[rust-lightning] / lightning / src / ln / reload_tests.rs
index 92957040dc1adbc4fea923a4f1db32f83f8860ee..bf2fb1de1e30d4a9ff3bf1fa5498d8f37fbbf5f8 100644 (file)
 //! Functional tests which test for correct behavior across node restarts.
 
 use crate::chain::{ChannelMonitorUpdateStatus, Watch};
+use crate::chain::chaininterface::LowerBoundedFeeEstimator;
 use crate::chain::channelmonitor::ChannelMonitor;
+use crate::sign::EntropySource;
 use crate::chain::transaction::OutPoint;
-use crate::ln::channelmanager::{self, ChannelManager, ChannelManagerReadArgs, PaymentId};
+use crate::events::{ClosureReason, Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider};
+use crate::ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, PaymentId, RecipientOnionFields};
 use crate::ln::msgs;
 use crate::ln::msgs::{ChannelMessageHandler, RoutingMessageHandler, ErrorAction};
 use crate::util::enforcing_trait_impls::EnforcingSigner;
 use crate::util::test_utils;
-use crate::util::events::{Event, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
+use crate::util::errors::APIError;
 use crate::util::ser::{Writeable, ReadableArgs};
 use crate::util::config::UserConfig;
+use crate::util::string::UntrustedString;
 
 use bitcoin::hash_types::BlockHash;
 
@@ -37,12 +41,12 @@ fn test_funding_peer_disconnect() {
        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<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001);
 
-       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_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        confirm_transaction(&nodes[0], &tx);
        let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
@@ -50,16 +54,20 @@ fn test_funding_peer_disconnect() {
 
        reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
 
-       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_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        confirm_transaction(&nodes[1], &tx);
        let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
        assert!(events_2.is_empty());
 
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init {
+               features: nodes[1].node.init_features(), networks: None, remote_network_address: None
+       }, true).unwrap();
        let as_reestablish = get_chan_reestablish_msgs!(nodes[0], nodes[1]).pop().unwrap();
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+               features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+       }, false).unwrap();
        let bs_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
 
        // nodes[0] hasn't yet received a channel_ready, so it only sends that on reconnect.
@@ -137,7 +145,7 @@ fn test_funding_peer_disconnect() {
        assert_eq!(events_7.len(), 1);
        let (chan_announcement, as_update) = match events_7[0] {
                MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
-                       (msg.clone(), update_msg.clone())
+                       (msg.clone(), update_msg.clone().unwrap())
                },
                _ => panic!("Unexpected event {:?}", events_7[0]),
        };
@@ -150,7 +158,7 @@ fn test_funding_peer_disconnect() {
        let bs_update = match events_8[0] {
                MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
                        assert_eq!(*msg, chan_announcement);
-                       update_msg.clone()
+                       update_msg.clone().unwrap()
                },
                _ => panic!("Unexpected event {:?}", events_8[0]),
        };
@@ -166,7 +174,7 @@ fn test_funding_peer_disconnect() {
 
        // Check that after deserialization and reconnection we can still generate an identical
        // channel_announcement from the cached signatures.
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
 
@@ -182,20 +190,24 @@ fn test_no_txn_manager_serialize_deserialize() {
        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<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001);
 
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        let chan_0_monitor_serialized =
                get_monitor!(nodes[0], OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).encode();
        reload_node!(nodes[0], nodes[0].node.encode(), &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
 
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init {
+               features: nodes[1].node.init_features(), networks: None, remote_network_address: None
+       }, true).unwrap();
        let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+               features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+       }, false).unwrap();
        let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
 
        nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
@@ -222,19 +234,17 @@ fn test_manager_serialize_deserialize_events() {
        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<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Start creating a channel, but stop right before broadcasting the funding transaction
        let channel_value = 100000;
        let push_msat = 10001;
-       let a_flags = channelmanager::provided_init_features();
-       let b_flags = channelmanager::provided_init_features();
        let node_a = nodes.remove(0);
        let node_b = nodes.remove(0);
        node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
-       node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), a_flags, &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id()));
-       node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), b_flags, &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id()));
+       node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id()));
+       node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id()));
 
        let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&node_a, &node_b.node.get_our_node_id(), channel_value, 42);
 
@@ -259,6 +269,9 @@ fn test_manager_serialize_deserialize_events() {
        }
        // Normally, this is where node_a would broadcast the funding transaction, but the test de/serializes first instead
 
+       expect_channel_pending_event(&node_a, &node_b.node.get_our_node_id());
+       expect_channel_pending_event(&node_b, &node_a.node.get_our_node_id());
+
        nodes.push(node_a);
        nodes.push(node_b);
 
@@ -266,7 +279,7 @@ fn test_manager_serialize_deserialize_events() {
        let chan_0_monitor_serialized = get_monitor!(nodes[0], bs_funding_signed.channel_id).encode();
        reload_node!(nodes[0], nodes[0].node.encode(), &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
 
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        // After deserializing, make sure the funding_transaction is still held by the channel manager
        let events_4 = nodes[0].node.get_and_clear_pending_events();
@@ -277,9 +290,13 @@ fn test_manager_serialize_deserialize_events() {
        // Make sure the channel is functioning as though the de/serialization never happened
        assert_eq!(nodes[0].node.list_channels().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();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init {
+               features: nodes[1].node.init_features(), networks: None, remote_network_address: None
+       }, true).unwrap();
        let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+               features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+       }, false).unwrap();
        let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
 
        nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
@@ -305,14 +322,14 @@ fn test_simple_manager_serialize_deserialize() {
        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<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+       let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1).2;
 
        let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
        let (_, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
 
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        let chan_0_monitor_serialized = get_monitor!(nodes[0], chan_id).encode();
        reload_node!(nodes[0], nodes[0].node.encode(), &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
@@ -333,11 +350,11 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let fee_estimator: test_utils::TestFeeEstimator;
        let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let nodes_0_deserialized: ChannelManager<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
-       let chan_id_1 = 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, 2, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
-       let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+       let chan_id_2 = create_announced_chan_between_nodes(&nodes, 2, 0).2;
+       let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3);
 
        let mut node_0_stale_monitors_serialized = Vec::new();
        for chan_id_iter in &[chan_id_1, chan_id_2, channel_id] {
@@ -352,9 +369,9 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let nodes_0_serialized = nodes[0].node.encode();
 
        route_payment(&nodes[0], &[&nodes[3]], 1000000);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-       nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-       nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
+       nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id());
+       nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
        // nodes[3])
@@ -374,7 +391,7 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let mut node_0_stale_monitors = Vec::new();
        for serialized in node_0_stale_monitors_serialized.iter() {
                let mut read = &serialized[..];
-               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
+               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, (keys_manager, keys_manager)).unwrap();
                assert!(read.is_empty());
                node_0_stale_monitors.push(monitor);
        }
@@ -382,17 +399,20 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let mut node_0_monitors = Vec::new();
        for serialized in node_0_monitors_serialized.iter() {
                let mut read = &serialized[..];
-               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
+               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, (keys_manager, keys_manager)).unwrap();
                assert!(read.is_empty());
                node_0_monitors.push(monitor);
        }
 
        let mut nodes_0_read = &nodes_0_serialized[..];
        if let Err(msgs::DecodeError::InvalidValue) =
-               <(BlockHash, ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(BlockHash, ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
                default_config: UserConfig::default(),
-               keys_manager,
+               entropy_source: keys_manager,
+               node_signer: keys_manager,
+               signer_provider: keys_manager,
                fee_estimator: &fee_estimator,
+               router: &nodes[0].router,
                chain_monitor: nodes[0].chain_monitor,
                tx_broadcaster: nodes[0].tx_broadcaster.clone(),
                logger: &logger,
@@ -403,10 +423,13 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
 
        let mut nodes_0_read = &nodes_0_serialized[..];
        let (_, nodes_0_deserialized_tmp) =
-               <(BlockHash, ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(BlockHash, ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
                default_config: UserConfig::default(),
-               keys_manager,
+               entropy_source: keys_manager,
+               node_signer: keys_manager,
+               signer_provider: keys_manager,
                fee_estimator: &fee_estimator,
+               router: nodes[0].router,
                chain_monitor: nodes[0].chain_monitor,
                tx_broadcaster: nodes[0].tx_broadcaster.clone(),
                logger: &logger,
@@ -415,20 +438,22 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        nodes_0_deserialized = nodes_0_deserialized_tmp;
        assert!(nodes_0_read.is_empty());
 
-       { // Channel close should result in a commitment tx
-               let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               assert_eq!(txn.len(), 1);
-               check_spends!(txn[0], funding_tx);
-               assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
-       }
-
        for monitor in node_0_monitors.drain(..) {
                assert_eq!(nodes[0].chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor),
                        ChannelMonitorUpdateStatus::Completed);
                check_added_monitors!(nodes[0], 1);
        }
        nodes[0].node = &nodes_0_deserialized;
+
        check_closed_event!(nodes[0], 1, ClosureReason::OutdatedChannelManager);
+       { // Channel close should result in a commitment tx
+               nodes[0].node.timer_tick_occurred();
+               let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               assert_eq!(txn.len(), 1);
+               check_spends!(txn[0], funding_tx);
+               assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
+       }
+       check_added_monitors!(nodes[0], 1);
 
        // nodes[1] and nodes[2] have no lost state with nodes[0]...
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
@@ -436,9 +461,13 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        //... and we can even still claim the payment!
        claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage);
 
-       nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+               features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+       }, true).unwrap();
        let reestablish = get_chan_reestablish_msgs!(nodes[3], nodes[0]).pop().unwrap();
-       nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init {
+               features: nodes[3].node.init_features(), networks: None, remote_network_address: None
+       }, false).unwrap();
        nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish);
        let mut found_err = false;
        for msg_event in nodes[0].node.get_and_clear_pending_msg_events() {
@@ -472,7 +501,7 @@ fn do_test_data_loss_protect(reconnect_panicing: bool) {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
 
        // Cache node A state before any channel update
        let previous_node_state = nodes[0].node.encode();
@@ -481,14 +510,18 @@ fn do_test_data_loss_protect(reconnect_panicing: bool) {
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
 
-       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_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        reload_node!(nodes[0], previous_node_state, &[&previous_chain_monitor_state], persister, new_chain_monitor, nodes_0_deserialized);
 
        if reconnect_panicing {
-               nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
-               nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+               nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init {
+                       features: nodes[1].node.init_features(), networks: None, remote_network_address: None
+               }, true).unwrap();
+               nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+                       features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+               }, false).unwrap();
 
                let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
 
@@ -536,8 +569,12 @@ fn do_test_data_loss_protect(reconnect_panicing: bool) {
        // after the warning message sent by B, we should not able to
        // use the channel, or reconnect with success to the channel.
        assert!(nodes[0].node.list_usable_channels().is_empty());
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init {
+               features: nodes[1].node.init_features(), networks: None, remote_network_address: None
+       }, true).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init {
+               features: nodes[0].node.init_features(), networks: None, remote_network_address: None
+       }, false).unwrap();
        let retry_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
 
        nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &retry_reestablish[0]);
@@ -546,7 +583,7 @@ fn do_test_data_loss_protect(reconnect_panicing: bool) {
                if let MessageSendEvent::HandleError { ref action, .. } = msg {
                        match action {
                                &ErrorAction::SendErrorMessage { ref msg } => {
-                                       assert_eq!(msg.data, "Failed to find corresponding channel");
+                                       assert_eq!(msg.data, format!("Got a message for a channel from the wrong node! No such channel for the passed counterparty_node_id {}", &nodes[1].node.get_our_node_id()));
                                        err_msgs_0.push(msg.clone());
                                },
                                _ => panic!("Unexpected event!"),
@@ -559,7 +596,7 @@ fn do_test_data_loss_protect(reconnect_panicing: bool) {
        nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), &err_msgs_0[0]);
        assert!(nodes[1].node.list_usable_channels().is_empty());
        check_added_monitors!(nodes[1], 1);
-       check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: "Failed to find corresponding channel".to_owned() });
+       check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: UntrustedString(format!("Got a message for a channel from the wrong node! No such channel for the passed counterparty_node_id {}", &nodes[1].node.get_our_node_id())) });
        check_closed_broadcast!(nodes[1], false);
 }
 
@@ -586,14 +623,15 @@ fn test_forwardable_regen() {
        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_1_deserialized: ChannelManager<&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::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan_id_1 = 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()).2;
+       let chan_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+       let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2).2;
 
        // First send a payment to nodes[1]
        let (route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
-       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
+       nodes[0].node.send_payment_with_route(&route, payment_hash,
+               RecipientOnionFields::secret_only(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();
@@ -606,7 +644,8 @@ fn test_forwardable_regen() {
 
        // Next send a payment which is forwarded by nodes[1]
        let (route_2, payment_hash_2, payment_preimage_2, payment_secret_2) = get_route_and_payment_hash!(nodes[0], nodes[2], 200_000);
-       nodes[0].node.send_payment(&route_2, payment_hash_2, &Some(payment_secret_2), PaymentId(payment_hash_2.0)).unwrap();
+       nodes[0].node.send_payment_with_route(&route_2, payment_hash_2,
+               RecipientOnionFields::secret_only(payment_secret_2), PaymentId(payment_hash_2.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
 
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
@@ -620,8 +659,8 @@ fn test_forwardable_regen() {
        assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 
        // Now restart nodes[1] and make sure it regenerates a single PendingHTLCsForwardable
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
 
        let chan_0_monitor_serialized = get_monitor!(nodes[1], chan_id_1).encode();
        let chan_1_monitor_serialized = get_monitor!(nodes[1], chan_id_2).encode();
@@ -670,32 +709,35 @@ fn do_test_partial_claim_before_restart(persist_both_monitors: bool) {
 
        let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let nodes_3_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       let nodes_3_deserialized: ChannelManager<&test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestRouter, &test_utils::TestLogger>;
 
        let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_id_persisted = create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
-       let chan_id_not_persisted = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0);
+       let chan_id_persisted = create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0).2;
+       let chan_id_not_persisted = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0).2;
 
        // Create an MPP route for 15k sats, more than the default htlc-max of 10%
        let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[3], 15_000_000);
        assert_eq!(route.paths.len(), 2);
        route.paths.sort_by(|path_a, _| {
                // Sort the path so that the path through nodes[1] comes first
-               if path_a[0].pubkey == nodes[1].node.get_our_node_id() {
+               if path_a.hops[0].pubkey == nodes[1].node.get_our_node_id() {
                        core::cmp::Ordering::Less } else { core::cmp::Ordering::Greater }
        });
 
-       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
+       nodes[0].node.send_payment_with_route(&route, payment_hash,
+               RecipientOnionFields::secret_only(payment_secret), PaymentId(payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 2);
 
        // Send the payment through to nodes[3] *without* clearing the PaymentClaimable event
        let mut send_events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(send_events.len(), 2);
-       do_pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), send_events[0].clone(), true, false, None);
-       do_pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), send_events[1].clone(), true, false, None);
+       let node_1_msgs = remove_first_msg_event_to_node(&nodes[1].node.get_our_node_id(), &mut send_events);
+       let node_2_msgs = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut send_events);
+       do_pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), node_1_msgs, true, false, None);
+       do_pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), node_2_msgs, true, false, None);
 
        // Now that we have an MPP payment pending, get the latest encoded copies of nodes[3]'s
        // monitors and ChannelManager, for use later, if we don't want to persist both monitors.
@@ -744,8 +786,8 @@ fn do_test_partial_claim_before_restart(persist_both_monitors: bool) {
        assert!(get_monitor!(nodes[3], chan_id_persisted).get_stored_preimages().contains_key(&payment_hash));
        assert!(get_monitor!(nodes[3], chan_id_not_persisted).get_stored_preimages().contains_key(&payment_hash));
 
-       nodes[1].node.peer_disconnected(&nodes[3].node.get_our_node_id(), false);
-       nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[3].node.get_our_node_id());
+       nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id());
 
        // During deserialization, we should have closed one channel and broadcast its latest
        // commitment transaction. We should also still have the original PaymentClaimable event we
@@ -756,6 +798,9 @@ fn do_test_partial_claim_before_restart(persist_both_monitors: bool) {
        if let Event::ChannelClosed { reason: ClosureReason::OutdatedChannelManager, .. } = events[1] { } else { panic!(); }
        if persist_both_monitors {
                if let Event::ChannelClosed { reason: ClosureReason::OutdatedChannelManager, .. } = events[2] { } else { panic!(); }
+               check_added_monitors(&nodes[3], 2);
+       } else {
+               check_added_monitors(&nodes[3], 1);
        }
 
        // On restart, we should also get a duplicate PaymentClaimed event as we persisted the
@@ -770,9 +815,13 @@ fn do_test_partial_claim_before_restart(persist_both_monitors: bool) {
        if !persist_both_monitors {
                // If one of the two channels is still live, reveal the payment preimage over it.
 
-               nodes[3].node.peer_connected(&nodes[2].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+               nodes[3].node.peer_connected(&nodes[2].node.get_our_node_id(), &msgs::Init {
+                       features: nodes[2].node.init_features(), networks: None, remote_network_address: None
+               }, true).unwrap();
                let reestablish_1 = get_chan_reestablish_msgs!(nodes[3], nodes[2]);
-               nodes[2].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+               nodes[2].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init {
+                       features: nodes[3].node.init_features(), networks: None, remote_network_address: None
+               }, false).unwrap();
                let reestablish_2 = get_chan_reestablish_msgs!(nodes[2], nodes[3]);
 
                nodes[2].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish_1[0]);
@@ -811,3 +860,244 @@ fn test_partial_claim_before_restart() {
        do_test_partial_claim_before_restart(false);
        do_test_partial_claim_before_restart(true);
 }
+
+fn do_forwarded_payment_no_manager_persistence(use_cs_commitment: bool, claim_htlc: bool, use_intercept: bool) {
+       if !use_cs_commitment { assert!(!claim_htlc); }
+       // If we go to forward a payment, and the ChannelMonitor persistence completes, but the
+       // ChannelManager does not, we shouldn't try to forward the payment again, nor should we fail
+       // it back until the ChannelMonitor decides the fate of the HTLC.
+       // This was never an issue, but it may be easy to regress here going forward.
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+       let mut intercept_forwards_config = test_default_channel_config();
+       intercept_forwards_config.accept_intercept_htlcs = true;
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(intercept_forwards_config), None]);
+
+       let persister;
+       let new_chain_monitor;
+       let nodes_1_deserialized;
+
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let chan_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+       let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2).2;
+
+       let intercept_scid = nodes[1].node.get_intercept_scid();
+
+       let (mut route, payment_hash, payment_preimage, payment_secret) =
+               get_route_and_payment_hash!(nodes[0], nodes[2], 1_000_000);
+       if use_intercept {
+               route.paths[0].hops[1].short_channel_id = intercept_scid;
+       }
+       let payment_id = PaymentId(nodes[0].keys_manager.backing.get_secure_random_bytes());
+       let htlc_expiry = nodes[0].best_block_info().1 + TEST_FINAL_CLTV;
+       nodes[0].node.send_payment_with_route(&route, payment_hash,
+               RecipientOnionFields::secret_only(payment_secret), payment_id).unwrap();
+       check_added_monitors!(nodes[0], 1);
+
+       let payment_event = SendEvent::from_node(&nodes[0]);
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
+       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
+
+       // Store the `ChannelManager` before handling the `PendingHTLCsForwardable`/`HTLCIntercepted`
+       // events, expecting either event (and the HTLC itself) to be missing on reload even though its
+       // present when we serialized.
+       let node_encoded = nodes[1].node.encode();
+
+       let mut intercept_id = None;
+       let mut expected_outbound_amount_msat = None;
+       if use_intercept {
+               let events = nodes[1].node.get_and_clear_pending_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       Event::HTLCIntercepted { intercept_id: ev_id, expected_outbound_amount_msat: ev_amt, .. } => {
+                               intercept_id = Some(ev_id);
+                               expected_outbound_amount_msat = Some(ev_amt);
+                       },
+                       _ => panic!()
+               }
+               nodes[1].node.forward_intercepted_htlc(intercept_id.unwrap(), &chan_id_2,
+                       nodes[2].node.get_our_node_id(), expected_outbound_amount_msat.unwrap()).unwrap();
+       }
+
+       expect_pending_htlcs_forwardable!(nodes[1]);
+
+       let payment_event = SendEvent::from_node(&nodes[1]);
+       nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
+       nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg);
+       check_added_monitors!(nodes[2], 1);
+
+       if claim_htlc {
+               get_monitor!(nodes[2], chan_id_2).provide_payment_preimage(&payment_hash, &payment_preimage,
+                       &nodes[2].tx_broadcaster, &LowerBoundedFeeEstimator(nodes[2].fee_estimator), &nodes[2].logger);
+       }
+       assert!(nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+
+       let _ = nodes[2].node.get_and_clear_pending_msg_events();
+
+       nodes[2].node.force_close_broadcasting_latest_txn(&chan_id_2, &nodes[1].node.get_our_node_id()).unwrap();
+       let cs_commitment_tx = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+       assert_eq!(cs_commitment_tx.len(), if claim_htlc { 2 } else { 1 });
+
+       check_added_monitors!(nodes[2], 1);
+       check_closed_event!(nodes[2], 1, ClosureReason::HolderForceClosed);
+       check_closed_broadcast!(nodes[2], true);
+
+       let chan_0_monitor_serialized = get_monitor!(nodes[1], chan_id_1).encode();
+       let chan_1_monitor_serialized = get_monitor!(nodes[1], chan_id_2).encode();
+       reload_node!(nodes[1], node_encoded, &[&chan_0_monitor_serialized, &chan_1_monitor_serialized], persister, new_chain_monitor, nodes_1_deserialized);
+
+       // Note that this checks that this is the only event on nodes[1], implying the
+       // `HTLCIntercepted` event has been removed in the `use_intercept` case.
+       check_closed_event!(nodes[1], 1, ClosureReason::OutdatedChannelManager);
+
+       if use_intercept {
+               // Attempt to forward the HTLC back out over nodes[1]' still-open channel, ensuring we get
+               // a intercept-doesn't-exist error.
+               let forward_err = nodes[1].node.forward_intercepted_htlc(intercept_id.unwrap(), &chan_id_1,
+                       nodes[0].node.get_our_node_id(), expected_outbound_amount_msat.unwrap()).unwrap_err();
+               assert_eq!(forward_err, APIError::APIMisuseError {
+                       err: format!("Payment with intercept id {} not found", log_bytes!(intercept_id.unwrap().0))
+               });
+       }
+
+       nodes[1].node.timer_tick_occurred();
+       let bs_commitment_tx = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+       assert_eq!(bs_commitment_tx.len(), 1);
+       check_added_monitors!(nodes[1], 1);
+
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+
+       if use_cs_commitment {
+               // If we confirm a commitment transaction that has the HTLC on-chain, nodes[1] should wait
+               // for an HTLC-spending transaction before it does anything with the HTLC upstream.
+               confirm_transaction(&nodes[1], &cs_commitment_tx[0]);
+               assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
+               assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+               if claim_htlc {
+                       confirm_transaction(&nodes[1], &cs_commitment_tx[1]);
+               } else {
+                       connect_blocks(&nodes[1], htlc_expiry - nodes[1].best_block_info().1 + 1);
+                       let bs_htlc_timeout_tx = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+                       assert_eq!(bs_htlc_timeout_tx.len(), 1);
+                       confirm_transaction(&nodes[1], &bs_htlc_timeout_tx[0]);
+               }
+       } else {
+               confirm_transaction(&nodes[1], &bs_commitment_tx[0]);
+       }
+
+       if !claim_htlc {
+               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 }]);
+       } else {
+               expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), false, true);
+       }
+       check_added_monitors!(nodes[1], 1);
+
+       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       match &events[0] {
+               MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { update_fulfill_htlcs, update_fail_htlcs, commitment_signed, .. }, .. } => {
+                       if claim_htlc {
+                               nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
+                       } else {
+                               nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
+                       }
+                       commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false);
+               },
+               _ => panic!("Unexpected event"),
+       }
+
+       if claim_htlc {
+               expect_payment_sent!(nodes[0], payment_preimage);
+       } else {
+               expect_payment_failed!(nodes[0], payment_hash, false);
+       }
+}
+
+#[test]
+fn forwarded_payment_no_manager_persistence() {
+       do_forwarded_payment_no_manager_persistence(true, true, false);
+       do_forwarded_payment_no_manager_persistence(true, false, false);
+       do_forwarded_payment_no_manager_persistence(false, false, false);
+}
+
+#[test]
+fn intercepted_payment_no_manager_persistence() {
+       do_forwarded_payment_no_manager_persistence(true, true, true);
+       do_forwarded_payment_no_manager_persistence(true, false, true);
+       do_forwarded_payment_no_manager_persistence(false, false, true);
+}
+
+#[test]
+fn removed_payment_no_manager_persistence() {
+       // If an HTLC is failed to us on a channel, and the ChannelMonitor persistence completes, but
+       // the corresponding ChannelManager persistence does not, we need to ensure that the HTLC is
+       // still failed back to the previous hop even though the ChannelMonitor now no longer is aware
+       // of the HTLC. This was previously broken as no attempt was made to figure out which HTLCs
+       // were left dangling when a channel was force-closed due to a stale ChannelManager.
+       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 persister;
+       let new_chain_monitor;
+       let nodes_1_deserialized;
+
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let chan_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+       let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2).2;
+
+       let (_, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
+
+       let node_encoded = nodes[1].node.encode();
+
+       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 events = nodes[2].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       match &events[0] {
+               MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { update_fail_htlcs, commitment_signed, .. }, .. } => {
+                       nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &update_fail_htlcs[0]);
+                       commitment_signed_dance!(nodes[1], nodes[2], commitment_signed, false);
+               },
+               _ => panic!("Unexpected event"),
+       }
+
+       let chan_0_monitor_serialized = get_monitor!(nodes[1], chan_id_1).encode();
+       let chan_1_monitor_serialized = get_monitor!(nodes[1], chan_id_2).encode();
+       reload_node!(nodes[1], node_encoded, &[&chan_0_monitor_serialized, &chan_1_monitor_serialized], persister, new_chain_monitor, nodes_1_deserialized);
+
+       match nodes[1].node.pop_pending_event().unwrap() {
+               Event::ChannelClosed { ref reason, .. } => {
+                       assert_eq!(*reason, ClosureReason::OutdatedChannelManager);
+               },
+               _ => panic!("Unexpected event"),
+       }
+
+       nodes[1].node.test_process_background_events();
+       check_added_monitors(&nodes[1], 1);
+
+       // Now that the ChannelManager has force-closed the channel which had the HTLC removed, it is
+       // now forgotten everywhere. The ChannelManager should have, as a side-effect of reload,
+       // learned that the HTLC is gone from the ChannelMonitor and added it to the to-fail-back set.
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, 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 }]);
+       check_added_monitors!(nodes[1], 1);
+       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       match &events[0] {
+               MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { update_fail_htlcs, commitment_signed, .. }, .. } => {
+                       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
+                       commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false);
+               },
+               _ => panic!("Unexpected event"),
+       }
+
+       expect_payment_failed!(nodes[0], payment_hash, false);
+}