Handle double-HTLC-claims without failing the backwards channel
[rust-lightning] / lightning / src / ln / chanmon_update_fail_tests.rs
index 13eb4ed8b465ae0de4473d82877ed8f13a0b9a63..2918b4cef13aaf2baa2c83c280aacc6c075f2fae 100644 (file)
 //! There are a bunch of these as their handling is relatively error-prone so they are split out
 //! here. See also the chanmon_fail_consistency fuzz test.
 
-use bitcoin::blockdata::block::BlockHeader;
+use bitcoin::blockdata::block::{Block, BlockHeader};
+use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::hash_types::BlockHash;
 use bitcoin::network::constants::Network;
 use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr};
 use chain::transaction::OutPoint;
+use chain::Listen;
 use chain::Watch;
-use ln::channelmanager::{RAACommitmentOrder, PaymentPreimage, PaymentHash, PaymentSecret, PaymentSendFailure};
-use ln::features::InitFeatures;
+use ln::{PaymentPreimage, PaymentHash};
+use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentSendFailure};
+use ln::features::{InitFeatures, InvoiceFeatures};
 use ln::msgs;
 use ln::msgs::{ChannelMessageHandler, ErrorAction, RoutingMessageHandler};
 use routing::router::get_route;
+use util::config::UserConfig;
 use util::enforcing_trait_impls::EnforcingSigner;
-use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
+use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
 use util::errors::APIError;
 use util::ser::{ReadableArgs, Writeable};
+use util::test_utils::TestBroadcaster;
 
 use bitcoin::hashes::sha256::Hash as Sha256;
 use bitcoin::hashes::Hash;
@@ -35,6 +40,9 @@ use ln::functional_test_utils::*;
 
 use util::test_utils;
 
+use prelude::*;
+use std::sync::{Arc, Mutex};
+
 // If persister_fail is true, we have the persister return a PermanentFailure
 // instead of the higher-level ChainMonitor.
 fn do_test_simple_monitor_permanent_update_fail(persister_fail: bool) {
@@ -46,15 +54,15 @@ fn do_test_simple_monitor_permanent_update_fail(persister_fail: bool) {
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
        let logger = test_utils::TestLogger::new();
 
-       let (_, payment_hash_1) = get_payment_preimage_hash!(&nodes[0]);
+       let (_, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
 
        match persister_fail {
                true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::PermanentFailure)),
                false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::PermanentFailure))
        }
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &None), true, APIError::ChannelUnavailable {..}, {});
+       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+       unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), true, APIError::ChannelUnavailable {..}, {});
        check_added_monitors!(nodes[0], 2);
 
        let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
@@ -89,7 +97,7 @@ fn test_monitor_and_persister_update_fail() {
        let outpoint = OutPoint { txid: chan.3.txid(), index: 0 };
 
        // Rebalance the network to generate htlc in the two directions
-       send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
+       send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000);
 
        // Route an HTLC from node 0 to node 1 (but don't settle)
        let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
@@ -101,6 +109,13 @@ fn test_monitor_and_persister_update_fail() {
        let chain_source = test_utils::TestChainSource::new(Network::Testnet);
        let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
        let persister = test_utils::TestPersister::new();
+       let tx_broadcaster = TestBroadcaster {
+               txn_broadcasted: Mutex::new(Vec::new()),
+               // Because we will connect a block at height 200 below, we need the TestBroadcaster to know
+               // that we are at height 200 so that it doesn't think we're violating the time lock
+               // requirements of transactions broadcasted at that point.
+               blocks: Arc::new(Mutex::new(vec![(genesis_block(Network::Testnet).header, 200); 200])),
+       };
        let chain_mon = {
                let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
                let monitor = monitors.get(&outpoint).unwrap();
@@ -109,18 +124,18 @@ fn test_monitor_and_persister_update_fail() {
                let new_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
                        &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
                assert!(new_monitor == *monitor);
-               let chain_mon = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
+               let chain_mon = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
                assert!(chain_mon.watch_channel(outpoint, new_monitor).is_ok());
                chain_mon
        };
        let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-       chain_mon.chain_monitor.block_connected(&header, &[], 200);
+       chain_mon.chain_monitor.block_connected(&Block { header, txdata: vec![] }, 200);
 
        // Set the persister's return value to be a TemporaryFailure.
        persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure));
 
        // Try to update ChannelMonitor
-       assert!(nodes[1].node.claim_funds(preimage, &None, 9_000_000));
+       assert!(nodes[1].node.claim_funds(preimage));
        check_added_monitors!(nodes[1], 1);
        let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        assert_eq!(updates.update_fulfill_htlcs.len(), 1);
@@ -161,7 +176,7 @@ fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(&nodes[0]);
+       let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
 
        match persister_fail {
                true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure)),
@@ -170,8 +185,8 @@ fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail
 
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &None), false, APIError::MonitorUpdateFailed, {});
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), false, APIError::MonitorUpdateFailed, {});
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -182,7 +197,7 @@ fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail
        if disconnect {
                nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
                nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-               reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+               reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
        }
 
        match persister_fail {
@@ -205,26 +220,27 @@ fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail
        let events_3 = nodes[1].node.get_and_clear_pending_events();
        assert_eq!(events_3.len(), 1);
        match events_3[0] {
-               Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
+               Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
                        assert_eq!(payment_hash_1, *payment_hash);
-                       assert_eq!(*payment_secret, None);
+                       assert!(payment_preimage.is_none());
+                       assert_eq!(payment_secret_1, *payment_secret);
                        assert_eq!(amt, 1000000);
                },
                _ => panic!("Unexpected event"),
        }
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
 
        // Now set it to failed again...
-       let (_, payment_hash_2) = get_payment_preimage_hash!(&nodes[0]);
+       let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(&nodes[1]);
        {
                match persister_fail {
                        true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure)),
                        false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure))
                }
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &None), false, APIError::MonitorUpdateFailed, {});
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)), false, APIError::MonitorUpdateFailed, {});
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -235,7 +251,7 @@ fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail
        if disconnect {
                nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
                nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-               reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+               reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
        }
 
        // ...and make sure we can force-close a frozen channel
@@ -286,15 +302,15 @@ fn do_test_monitor_temporary_update_fail(disconnect_count: usize) {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
+       let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
 
        // Now try to send a second payment which will fail to send
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
        {
                *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &None), false, APIError::MonitorUpdateFailed, {});
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)), false, APIError::MonitorUpdateFailed, {});
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -304,7 +320,7 @@ fn do_test_monitor_temporary_update_fail(disconnect_count: usize) {
 
        // Claim the previous payment, which will result in a update_fulfill_htlc/CS from nodes[1]
        // but nodes[0] won't respond since it is frozen.
-       assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
+       assert!(nodes[1].node.claim_funds(payment_preimage_1));
        check_added_monitors!(nodes[1], 1);
        let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(events_2.len(), 1);
@@ -573,15 +589,16 @@ fn do_test_monitor_temporary_update_fail(disconnect_count: usize) {
        let events_5 = nodes[1].node.get_and_clear_pending_events();
        assert_eq!(events_5.len(), 1);
        match events_5[0] {
-               Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
+               Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
                        assert_eq!(payment_hash_2, *payment_hash);
-                       assert_eq!(*payment_secret, None);
+                       assert!(payment_preimage.is_none());
+                       assert_eq!(payment_secret_2, *payment_secret);
                        assert_eq!(amt, 1000000);
                },
                _ => panic!("Unexpected event"),
        }
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
 }
 
 #[test]
@@ -621,11 +638,11 @@ fn test_monitor_update_fail_cs() {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -687,15 +704,16 @@ fn test_monitor_update_fail_cs() {
        let events = nodes[1].node.get_and_clear_pending_events();
        assert_eq!(events.len(), 1);
        match events[0] {
-               Event::PaymentReceived { payment_hash, payment_secret, amt } => {
+               Event::PaymentReceived { payment_hash, payment_preimage, payment_secret, amt, user_payment_id: _ } => {
                        assert_eq!(payment_hash, our_payment_hash);
-                       assert_eq!(payment_secret, None);
+                       assert!(payment_preimage.is_none());
+                       assert_eq!(our_payment_secret, payment_secret);
                        assert_eq!(amt, 1000000);
                },
                _ => panic!("Unexpected event"),
        };
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
 }
 
 #[test]
@@ -710,11 +728,11 @@ fn test_monitor_update_fail_no_rebroadcast() {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage_1, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_1, our_payment_hash, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, our_payment_hash, &Some(payment_secret_1)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -746,7 +764,7 @@ fn test_monitor_update_fail_no_rebroadcast() {
                _ => panic!("Unexpected event"),
        }
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
 }
 
 #[test]
@@ -760,21 +778,21 @@ fn test_monitor_update_raa_while_paused() {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       send_payment(&nodes[0], &[&nodes[1]], 5000000, 5_000_000);
-       let (payment_preimage_1, our_payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
+       send_payment(&nodes[0], &[&nodes[1]], 5000000);
+       let (payment_preimage_1, our_payment_hash_1, our_payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, our_payment_hash_1, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
        let send_event_1 = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
 
-       let (payment_preimage_2, our_payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, our_payment_hash_2, our_payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
        {
                let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
-               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[1].node.send_payment(&route, our_payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[1].node.send_payment(&route, our_payment_hash_2, &Some(our_payment_secret_2)).unwrap();
                check_added_monitors!(nodes[1], 1);
        }
        let send_event_2 = SendEvent::from_event(nodes[1].node.get_and_clear_pending_msg_events().remove(0));
@@ -817,15 +835,15 @@ fn test_monitor_update_raa_while_paused() {
        nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_raa);
        check_added_monitors!(nodes[0], 1);
        expect_pending_htlcs_forwardable!(nodes[0]);
-       expect_payment_received!(nodes[0], our_payment_hash_2, 1000000);
+       expect_payment_received!(nodes[0], our_payment_hash_2, our_payment_secret_2, 1000000);
 
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_raa);
        check_added_monitors!(nodes[1], 1);
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], our_payment_hash_1, 1000000);
+       expect_payment_received!(nodes[1], our_payment_hash_1, our_payment_secret_1, 1000000);
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
-       claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
+       claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_2);
 }
 
 fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
@@ -839,13 +857,13 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
        let logger = test_utils::TestLogger::new();
 
        // Rebalance a bit so that we can send backwards from 2 to 1.
-       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000, 5_000_000);
+       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
 
        // Route a first payment that we'll fail backwards
-       let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
+       let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
 
        // Fail the payment backwards, failing the monitor update on nodes[1]'s receipt of the RAA
-       assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1, &None));
+       assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1));
        expect_pending_htlcs_forwardable!(nodes[2]);
        check_added_monitors!(nodes[2], 1);
 
@@ -862,11 +880,11 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
 
        // While the second channel is AwaitingRAA, forward a second payment to get it into the
        // holding cell.
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[2]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -887,13 +905,13 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
        check_added_monitors!(nodes[1], 1);
 
-       // Attempt to forward a third payment but fail due to the second channel being unavailable
-       // for forwarding.
-       let (_, payment_hash_3) = get_payment_preimage_hash!(nodes[0]);
+       // Forward a third payment which will also be added to the holding cell, despite the channel
+       // being paused waiting a monitor update.
+       let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[2]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_3, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -903,46 +921,18 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
        commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false, true);
        check_added_monitors!(nodes[1], 0);
 
-       let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
-       assert_eq!(events_2.len(), 1);
-       match events_2.remove(0) {
-               MessageSendEvent::UpdateHTLCs { node_id, updates } => {
-                       assert_eq!(node_id, nodes[0].node.get_our_node_id());
-                       assert!(updates.update_fulfill_htlcs.is_empty());
-                       assert_eq!(updates.update_fail_htlcs.len(), 1);
-                       assert!(updates.update_fail_malformed_htlcs.is_empty());
-                       assert!(updates.update_add_htlcs.is_empty());
-                       assert!(updates.update_fee.is_none());
-
-                       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
-                       commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true);
-
-                       let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
-                       assert_eq!(msg_events.len(), 1);
-                       match msg_events[0] {
-                               MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
-                                       assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id);
-                                       assert_eq!(msg.contents.flags & 2, 2); // temp disabled
-                               },
-                               _ => panic!("Unexpected event"),
-                       }
-
-                       let events = nodes[0].node.get_and_clear_pending_events();
-                       assert_eq!(events.len(), 1);
-                       if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events[0] {
-                               assert_eq!(payment_hash, payment_hash_3);
-                               assert!(!rejected_by_dest);
-                       } else { panic!("Unexpected event!"); }
-               },
-               _ => panic!("Unexpected event type!"),
-       };
+       // Call forward_pending_htlcs and check that the new HTLC was simply added to the holding cell
+       // and not forwarded.
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       check_added_monitors!(nodes[1], 0);
+       assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 
        let (payment_preimage_4, payment_hash_4) = if test_ignore_second_cs {
                // Try to route another payment backwards from 2 to make sure 1 holds off on responding
-               let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[0]);
+               let (payment_preimage_4, payment_hash_4, payment_secret_4) = get_payment_preimage_hash!(nodes[0]);
                let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
-               let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[2].node.send_payment(&route, payment_hash_4, &None).unwrap();
+               let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[2].node.send_payment(&route, payment_hash_4, &Some(payment_secret_4)).unwrap();
                check_added_monitors!(nodes[2], 1);
 
                send_event = SendEvent::from_event(nodes[2].node.get_and_clear_pending_msg_events().remove(0));
@@ -952,7 +942,6 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
                assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
                nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented generation of RAA".to_string(), 1);
                assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
-               assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
                (Some(payment_preimage_4), Some(payment_hash_4))
        } else { (None, None) };
 
@@ -1002,14 +991,10 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
 
        nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &messages_a.0);
        commitment_signed_dance!(nodes[0], nodes[1], messages_a.1, false);
-       let events_4 = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events_4.len(), 1);
-       if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events_4[0] {
-               assert_eq!(payment_hash, payment_hash_1);
-               assert!(rejected_by_dest);
-       } else { panic!("Unexpected event!"); }
+       expect_payment_failed!(nodes[0], payment_hash_1, true);
 
        nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_b.msgs[0]);
+       let as_cs;
        if test_ignore_second_cs {
                nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg);
                check_added_monitors!(nodes[2], 1);
@@ -1025,40 +1010,83 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
 
                nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
                check_added_monitors!(nodes[1], 1);
-               let as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
-               assert!(as_cs.update_add_htlcs.is_empty());
-               assert!(as_cs.update_fail_htlcs.is_empty());
-               assert!(as_cs.update_fail_malformed_htlcs.is_empty());
-               assert!(as_cs.update_fulfill_htlcs.is_empty());
-               assert!(as_cs.update_fee.is_none());
+               as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
 
                nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_cs.commitment_signed);
                check_added_monitors!(nodes[1], 1);
-               let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
-
-               nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_cs.commitment_signed);
+       } else {
+               nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg);
                check_added_monitors!(nodes[2], 1);
-               let bs_second_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
 
-               nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
-               check_added_monitors!(nodes[2], 1);
-               assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
+               let bs_revoke_and_commit = nodes[2].node.get_and_clear_pending_msg_events();
+               assert_eq!(bs_revoke_and_commit.len(), 2);
+               match bs_revoke_and_commit[0] {
+                       MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
+                               assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+                               nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &msg);
+                               check_added_monitors!(nodes[1], 1);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
 
-               nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_second_raa);
-               check_added_monitors!(nodes[1], 1);
-               assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
-       } else {
-               commitment_signed_dance!(nodes[2], nodes[1], send_event_b.commitment_msg, false);
+               as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
+
+               match bs_revoke_and_commit[1] {
+                       MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
+                               assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+                               assert!(updates.update_add_htlcs.is_empty());
+                               assert!(updates.update_fail_htlcs.is_empty());
+                               assert!(updates.update_fail_malformed_htlcs.is_empty());
+                               assert!(updates.update_fulfill_htlcs.is_empty());
+                               assert!(updates.update_fee.is_none());
+                               nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
+                               check_added_monitors!(nodes[1], 1);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
        }
 
+       assert_eq!(as_cs.update_add_htlcs.len(), 1);
+       assert!(as_cs.update_fail_htlcs.is_empty());
+       assert!(as_cs.update_fail_malformed_htlcs.is_empty());
+       assert!(as_cs.update_fulfill_htlcs.is_empty());
+       assert!(as_cs.update_fee.is_none());
+       let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
+
+
+       nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &as_cs.update_add_htlcs[0]);
+       nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_cs.commitment_signed);
+       check_added_monitors!(nodes[2], 1);
+       let bs_second_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+
+       nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
+       check_added_monitors!(nodes[2], 1);
+       let bs_second_cs = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+
+       nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_second_raa);
+       check_added_monitors!(nodes[1], 1);
+       assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+       nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_second_cs.commitment_signed);
+       check_added_monitors!(nodes[1], 1);
+       let as_second_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
+
+       nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_second_raa);
+       check_added_monitors!(nodes[2], 1);
+       assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
+
        expect_pending_htlcs_forwardable!(nodes[2]);
 
        let events_6 = nodes[2].node.get_and_clear_pending_events();
-       assert_eq!(events_6.len(), 1);
+       assert_eq!(events_6.len(), 2);
        match events_6[0] {
                Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_2); },
                _ => panic!("Unexpected event"),
        };
+       match events_6[1] {
+               Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_3); },
+               _ => panic!("Unexpected event"),
+       };
 
        if test_ignore_second_cs {
                expect_pending_htlcs_forwardable!(nodes[1]);
@@ -1078,10 +1106,10 @@ fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
                        Event::PaymentReceived { payment_hash, .. } => assert_eq!(payment_hash, payment_hash_4.unwrap()),
                        _ => panic!("Unexpected event"),
                };
-               claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_4.unwrap(), 1_000_000);
+               claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_4.unwrap());
        }
 
-       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_2);
 }
 
 #[test]
@@ -1102,12 +1130,12 @@ fn test_monitor_update_fail_reestablish() {
        let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
        create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
 
-       let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
+       let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
 
        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(), false);
 
-       assert!(nodes[2].node.claim_funds(our_payment_preimage, &None, 1_000_000));
+       assert!(nodes[2].node.claim_funds(our_payment_preimage));
        check_added_monitors!(nodes[2], 1);
        let mut updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
        assert!(updates.update_add_htlcs.is_empty());
@@ -1184,9 +1212,9 @@ fn raa_no_response_awaiting_raa_state() {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
-       let (payment_preimage_3, payment_hash_3) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
+       let (payment_preimage_3, payment_hash_3, payment_secret_3) = 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. Ultimately this allows us to deliver an RAA
@@ -1195,10 +1223,10 @@ fn raa_no_response_awaiting_raa_state() {
        // generation during RAA while in monitor-update-failed state.
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
                check_added_monitors!(nodes[0], 1);
-               nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[0], 0);
        }
 
@@ -1242,15 +1270,15 @@ fn raa_no_response_awaiting_raa_state() {
        check_added_monitors!(nodes[1], 0);
        let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_1, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
 
        // We send a third payment here, which is somewhat of a redundant test, but the
        // chanmon_fail_consistency test required it to actually find the bug (by seeing out-of-sync
        // commitment transaction states) whereas here we can explicitly check for it.
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_3, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
                check_added_monitors!(nodes[0], 0);
                assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
        }
@@ -1273,7 +1301,7 @@ fn raa_no_response_awaiting_raa_state() {
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
        check_added_monitors!(nodes[1], 1);
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_2, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
        let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
 
        nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
@@ -1286,11 +1314,11 @@ fn raa_no_response_awaiting_raa_state() {
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
        check_added_monitors!(nodes[1], 1);
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_3, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_3, payment_secret_3, 1000000);
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3);
 }
 
 #[test]
@@ -1309,12 +1337,12 @@ fn claim_while_disconnected_monitor_update_fail() {
        let logger = test_utils::TestLogger::new();
 
        // Forward a payment for B to claim
-       let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
+       let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
 
        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);
 
-       assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
+       assert!(nodes[1].node.claim_funds(payment_preimage_1));
        check_added_monitors!(nodes[1], 1);
 
        nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
@@ -1338,11 +1366,11 @@ fn claim_while_disconnected_monitor_update_fail() {
 
        // Send a second payment from A to B, resulting in a commitment update that gets swallowed with
        // the monitor still failed
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -1402,7 +1430,7 @@ fn claim_while_disconnected_monitor_update_fail() {
        check_added_monitors!(nodes[1], 1);
 
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_2, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
 
        nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
        check_added_monitors!(nodes[0], 1);
@@ -1416,7 +1444,7 @@ fn claim_while_disconnected_monitor_update_fail() {
                _ => panic!("Unexpected event"),
        }
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
 }
 
 #[test]
@@ -1434,11 +1462,11 @@ fn monitor_failed_no_reestablish_response() {
 
        // Route the payment and deliver the initial commitment_signed (with a monitor update failure
        // on receipt).
-       let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -1482,9 +1510,9 @@ fn monitor_failed_no_reestablish_response() {
        check_added_monitors!(nodes[1], 1);
 
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_1, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
 }
 
 #[test]
@@ -1508,11 +1536,11 @@ fn first_message_on_recv_ordering() {
 
        // Route the first payment outbound, holding the last RAA for B until we are set up so that we
        // can deliver it and fail the monitor update.
-       let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -1533,11 +1561,11 @@ fn first_message_on_recv_ordering() {
        let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
 
        // Route the second payment, generating an update_add_htlc/commitment_signed
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
@@ -1570,7 +1598,7 @@ fn first_message_on_recv_ordering() {
        check_added_monitors!(nodes[1], 0);
 
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_1, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
 
        let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
@@ -1583,19 +1611,19 @@ fn first_message_on_recv_ordering() {
        check_added_monitors!(nodes[1], 1);
 
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_2, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1, 1_000_000);
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
 }
 
 #[test]
 fn test_monitor_update_fail_claim() {
        // Basic test for monitor update failures when processing claim_funds calls.
        // We set up a simple 3-node network, sending a payment from A to B and failing B's monitor
-       // update to claim the payment. We then send a payment C->B->A, making the forward of this
-       // payment from B to A fail due to the paused channel. Finally, we restore the channel monitor
-       // updating and claim the payment on B.
+       // update to claim the payment. We then send two payments C->B->A, which are held at B.
+       // Finally, we restore the channel monitor updating and claim the payment on B, forwarding
+       // the payments from C onwards to A.
        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]);
@@ -1605,19 +1633,26 @@ fn test_monitor_update_fail_claim() {
        let logger = test_utils::TestLogger::new();
 
        // Rebalance a bit so that we can send backwards from 3 to 2.
-       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000, 5_000_000);
+       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
 
-       let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
+       let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
 
        *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
-       assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
+       assert!(nodes[1].node.claim_funds(payment_preimage_1));
+       nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Temporary failure claiming HTLC, treating as success: Failed to update ChannelMonitor".to_string(), 1);
        check_added_monitors!(nodes[1], 1);
 
-       let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       // Note that at this point there is a pending commitment transaction update for A being held by
+       // B. Even when we go to send the payment from C through B to A, B will not update this
+       // already-signed commitment transaction and will instead wait for it to resolve before
+       // forwarding the payment onwards.
+
+       let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
+       let route;
        {
                let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
-               let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[2].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1_000_000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[2].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[2], 1);
        }
 
@@ -1631,29 +1666,19 @@ fn test_monitor_update_fail_claim() {
        nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &payment_event.msgs[0]);
        let events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 0);
-       nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Temporary failure claiming HTLC, treating as success: Failed to update ChannelMonitor".to_string(), 1);
        commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
 
-       let bs_fail_update = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
-       nodes[2].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_fail_update.update_fail_htlcs[0]);
-       commitment_signed_dance!(nodes[2], nodes[1], bs_fail_update.commitment_signed, false, true);
-
-       let msg_events = nodes[2].node.get_and_clear_pending_msg_events();
-       assert_eq!(msg_events.len(), 1);
-       match msg_events[0] {
-               MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
-                       assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
-                       assert_eq!(msg.contents.flags & 2, 2); // temp disabled
-               },
-               _ => panic!("Unexpected event"),
-       }
+       let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
+       nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
+       check_added_monitors!(nodes[2], 1);
 
-       let events = nodes[2].node.get_and_clear_pending_events();
+       let mut events = nodes[2].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
-       if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events[0] {
-               assert_eq!(payment_hash, payment_hash_2);
-               assert!(!rejected_by_dest);
-       } else { panic!("Unexpected event!"); }
+       let payment_event = SendEvent::from_event(events.pop().unwrap());
+       nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &payment_event.msgs[0]);
+       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 0);
+       commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
 
        // Now restore monitor updating on the 0<->1 channel and claim the funds on B.
        let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
@@ -1663,12 +1688,37 @@ fn test_monitor_update_fail_claim() {
        let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_fulfill_update.update_fulfill_htlcs[0]);
        commitment_signed_dance!(nodes[0], nodes[1], bs_fulfill_update.commitment_signed, false);
+       expect_payment_sent!(nodes[0], payment_preimage_1);
+
+       // Get the payment forwards, note that they were batched into one commitment update.
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       check_added_monitors!(nodes[1], 1);
+       let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+       nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
+       nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[1]);
+       commitment_signed_dance!(nodes[0], nodes[1], bs_forward_update.commitment_signed, false);
+       expect_pending_htlcs_forwardable!(nodes[0]);
 
        let events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), 1);
-       if let Event::PaymentSent { payment_preimage, .. } = events[0] {
-               assert_eq!(payment_preimage, payment_preimage_1);
-       } else { panic!("Unexpected event!"); }
+       assert_eq!(events.len(), 2);
+       match events[0] {
+               Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
+                       assert_eq!(payment_hash_2, *payment_hash);
+                       assert!(payment_preimage.is_none());
+                       assert_eq!(payment_secret_2, *payment_secret);
+                       assert_eq!(1_000_000, amt);
+               },
+               _ => panic!("Unexpected event"),
+       }
+       match events[1] {
+               Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
+                       assert_eq!(payment_hash_3, *payment_hash);
+                       assert!(payment_preimage.is_none());
+                       assert_eq!(payment_secret_3, *payment_secret);
+                       assert_eq!(1_000_000, amt);
+               },
+               _ => panic!("Unexpected event"),
+       }
 }
 
 #[test]
@@ -1686,10 +1736,10 @@ fn test_monitor_update_on_pending_forwards() {
        let logger = test_utils::TestLogger::new();
 
        // Rebalance a bit so that we can send backwards from 3 to 1.
-       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000, 5_000_000);
+       send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
 
-       let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
-       assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1, &None));
+       let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
+       assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1));
        expect_pending_htlcs_forwardable!(nodes[2]);
        check_added_monitors!(nodes[2], 1);
 
@@ -1698,11 +1748,11 @@ fn test_monitor_update_on_pending_forwards() {
        commitment_signed_dance!(nodes[1], nodes[2], cs_fail_update.commitment_signed, true, true);
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
        {
                let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
-               let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[2].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[2].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[2], 1);
        }
 
@@ -1739,9 +1789,9 @@ fn test_monitor_update_on_pending_forwards() {
                _ => panic!("Unexpected event"),
        };
        nodes[0].node.process_pending_htlc_forwards();
-       expect_payment_received!(nodes[0], payment_hash_2, 1000000);
+       expect_payment_received!(nodes[0], payment_hash_2, payment_secret_2, 1000000);
 
-       claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_2);
 }
 
 #[test]
@@ -1758,14 +1808,14 @@ fn monitor_update_claim_fail_no_response() {
        let logger = test_utils::TestLogger::new();
 
        // Forward a payment for B to claim
-       let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
+       let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
 
        // Now start forwarding a second payment, skipping the last RAA so B is in AwaitingRAA
-       let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
        {
                let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
-               nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
+               let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+               nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
 
@@ -1776,7 +1826,7 @@ fn monitor_update_claim_fail_no_response() {
        let as_raa = commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false, true, false, true);
 
        *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
-       assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
+       assert!(nodes[1].node.claim_funds(payment_preimage_1));
        check_added_monitors!(nodes[1], 1);
        let events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 0);
@@ -1791,7 +1841,7 @@ fn monitor_update_claim_fail_no_response() {
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
        check_added_monitors!(nodes[1], 1);
        expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_payment_received!(nodes[1], payment_hash_2, 1000000);
+       expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
 
        let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
@@ -1806,7 +1856,7 @@ fn monitor_update_claim_fail_no_response() {
                _ => panic!("Unexpected event"),
        }
 
-       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
 }
 
 // confirm_a_first and restore_b_before_conf are wholly unrelated to earlier bools and
@@ -1825,7 +1875,7 @@ fn do_during_funding_monitor_fail(confirm_a_first: bool, restore_b_before_conf:
 
        let (temporary_channel_id, funding_tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 43);
 
-       nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_output);
+       nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_tx.clone()).unwrap();
        check_added_monitors!(nodes[0], 0);
 
        *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
@@ -1846,14 +1896,9 @@ fn do_during_funding_monitor_fail(confirm_a_first: bool, restore_b_before_conf:
        check_added_monitors!(nodes[0], 0);
 
        let events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), 1);
-       match events[0] {
-               Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
-                       assert_eq!(user_channel_id, 43);
-                       assert_eq!(*funding_txo, funding_output);
-               },
-               _ => panic!("Unexpected event"),
-       };
+       assert_eq!(events.len(), 0);
+       assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
+       assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0)[0].txid(), funding_output.txid);
 
        if confirm_a_first {
                confirm_transaction(&nodes[0], &funding_tx);
@@ -1867,7 +1912,7 @@ fn do_during_funding_monitor_fail(confirm_a_first: bool, restore_b_before_conf:
        // Make sure nodes[1] isn't stupid enough to re-send the FundingLocked on reconnect
        nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
        nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-       reconnect_nodes(&nodes[0], &nodes[1], (false, confirm_a_first), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+       reconnect_nodes(&nodes[0], &nodes[1], (false, confirm_a_first), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
        assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 
@@ -1901,7 +1946,7 @@ fn do_during_funding_monitor_fail(confirm_a_first: bool, restore_b_before_conf:
                node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
        }
 
-       send_payment(&nodes[0], &[&nodes[1]], 8000000, 8_000_000);
+       send_payment(&nodes[0], &[&nodes[1]], 8000000);
        close_channel(&nodes[0], &nodes[1], &channel_id, funding_tx, true);
 }
 
@@ -1927,9 +1972,8 @@ fn test_path_paused_mpp() {
        let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
        let logger = test_utils::TestLogger::new();
 
-       let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
-       let payment_secret = PaymentSecret([0xdb; 32]);
-       let mut route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
+       let mut route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
 
        // Set us up to take multiple routes, one 0 -> 1 -> 3 and one 0 -> 2 -> 3:
        let path = route.paths[0].clone();
@@ -1960,7 +2004,7 @@ fn test_path_paused_mpp() {
        // Pass the first HTLC of the payment along to nodes[3].
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
-       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 0, payment_hash.clone(), Some(payment_secret), events.pop().unwrap(), false);
+       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 0, payment_hash.clone(), payment_secret, events.pop().unwrap(), false);
 
        // And check that, after we successfully update the monitor for chan_2 we can pass the second
        // HTLC along to nodes[3] and claim the whole payment back to nodes[0].
@@ -1968,7 +2012,322 @@ fn test_path_paused_mpp() {
        nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
-       pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 200_000, payment_hash.clone(), Some(payment_secret), events.pop().unwrap(), true);
+       pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 200_000, payment_hash.clone(), payment_secret, events.pop().unwrap(), true);
 
-       claim_payment_along_route_with_secret(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage, Some(payment_secret), 200_000);
+       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
+}
+
+fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
+       // Tests that, when we serialize a channel with AddHTLC entries in the holding cell, we
+       // properly free them on reconnect. We previously failed such HTLCs upon serialization, but
+       // that behavior was both somewhat unexpected and also broken (there was a debug assertion
+       // which failed in such a case).
+       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 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 mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       let chan_id = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 15_000_000, 7_000_000_000, InitFeatures::known(), InitFeatures::known()).2;
+       let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
+       let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(&nodes[1]);
+
+       // Do a really complicated dance to get an HTLC into the holding cell, with MonitorUpdateFailed
+       // set but AwaitingRemoteRevoke unset. When this test was written, any attempts to send an HTLC
+       // while MonitorUpdateFailed is set are immediately failed-backwards. Thus, the only way to get
+       // an AddHTLC into the holding cell is to add it while AwaitingRemoteRevoke is set but
+       // MonitorUpdateFailed is unset, and then swap the flags.
+       //
+       // We do this by:
+       //  a) routing a payment from node B to node A,
+       //  b) sending a payment from node A to node B without delivering any of the generated messages,
+       //     putting node A in AwaitingRemoteRevoke,
+       //  c) sending a second payment from node A to node B, which is immediately placed in the
+       //     holding cell,
+       //  d) claiming the first payment from B, allowing us to fail the monitor update which occurs
+       //     when we try to persist the payment preimage,
+       //  e) delivering A's commitment_signed from (b) and the resulting B revoke_and_ack message,
+       //     clearing AwaitingRemoteRevoke on node A.
+       //
+       // Note that because, at the end, MonitorUpdateFailed is still set, the HTLC generated in (c)
+       // will not be freed from the holding cell.
+       let (payment_preimage_0, _, _) = route_payment(&nodes[1], &[&nodes[0]], 100000);
+
+       let route = {
+               let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+               get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, nodes[0].logger).unwrap()
+       };
+
+       nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let send = SendEvent::from_node(&nodes[0]);
+       assert_eq!(send.msgs.len(), 1);
+
+       nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
+       check_added_monitors!(nodes[0], 0);
+
+       *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
+       assert!(nodes[0].node.claim_funds(payment_preimage_0));
+       check_added_monitors!(nodes[0], 1);
+
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
+       nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
+       check_added_monitors!(nodes[1], 1);
+
+       let (raa, cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+
+       nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa);
+       check_added_monitors!(nodes[0], 1);
+
+       if disconnect {
+               // Optionally reload nodes[0] entirely through a serialization roundtrip, otherwise just
+               // disconnect the peers. Note that the fuzzer originally found this issue because
+               // deserializing a ChannelManager in this state causes an assertion failure.
+               if reload_a {
+                       let nodes_0_serialized = nodes[0].node.encode();
+                       let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
+                       nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.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 config = UserConfig::default();
+                       nodes_0_deserialized = {
+                               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: 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().1
+                       };
+                       nodes[0].node = &nodes_0_deserialized;
+                       assert!(nodes_0_read.is_empty());
+
+                       nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0.clone(), chan_0_monitor).unwrap();
+                       check_added_monitors!(nodes[0], 1);
+               } else {
+                       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);
+
+               // Now reconnect the two
+               nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
+               let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
+               assert_eq!(reestablish_1.len(), 1);
+               nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
+               let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
+               assert_eq!(reestablish_2.len(), 1);
+
+               nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
+               let resp_1 = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
+               check_added_monitors!(nodes[1], 0);
+
+               nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
+               let resp_0 = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
+
+               assert!(resp_0.0.is_none());
+               assert!(resp_0.1.is_none());
+               assert!(resp_0.2.is_none());
+               assert!(resp_1.0.is_none());
+               assert!(resp_1.1.is_none());
+
+               // Check that the freshly-generated cs is equal to the original (which we will deliver in a
+               // moment).
+               if let Some(pending_cs) = resp_1.2 {
+                       assert!(pending_cs.update_add_htlcs.is_empty());
+                       assert!(pending_cs.update_fail_htlcs.is_empty());
+                       assert!(pending_cs.update_fulfill_htlcs.is_empty());
+                       assert_eq!(pending_cs.commitment_signed, cs);
+               } else { panic!(); }
+
+               // There should be no monitor updates as we are still pending awaiting a failed one.
+               check_added_monitors!(nodes[0], 0);
+               check_added_monitors!(nodes[1], 0);
+       }
+
+       // If we finish updating the monitor, we should free the holding cell right away (this did
+       // not occur prior to #756).
+       *nodes[0].chain_monitor.update_ret.lock().unwrap() = None;
+       let (funding_txo, mon_id) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
+       nodes[0].node.channel_monitor_updated(&funding_txo, mon_id);
+
+       // New outbound messages should be generated immediately upon a call to
+       // get_and_clear_pending_msg_events (but not before).
+       check_added_monitors!(nodes[0], 0);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       check_added_monitors!(nodes[0], 1);
+       assert_eq!(events.len(), 1);
+
+       // Deliver the pending in-flight CS
+       nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &cs);
+       check_added_monitors!(nodes[0], 1);
+
+       let commitment_msg = match events.pop().unwrap() {
+               MessageSendEvent::UpdateHTLCs { node_id, updates } => {
+                       assert_eq!(node_id, nodes[1].node.get_our_node_id());
+                       assert!(updates.update_fail_htlcs.is_empty());
+                       assert!(updates.update_fail_malformed_htlcs.is_empty());
+                       assert!(updates.update_fee.is_none());
+                       assert_eq!(updates.update_fulfill_htlcs.len(), 1);
+                       nodes[1].node.handle_update_fulfill_htlc(&nodes[0].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
+                       expect_payment_sent!(nodes[1], payment_preimage_0);
+                       assert_eq!(updates.update_add_htlcs.len(), 1);
+                       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
+                       updates.commitment_signed
+               },
+               _ => panic!("Unexpected event type!"),
+       };
+
+       nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_msg);
+       check_added_monitors!(nodes[1], 1);
+
+       let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 100000);
+       check_added_monitors!(nodes[1], 1);
+
+       commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
+
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 100000);
+
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
+       claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
+}
+#[test]
+fn channel_holding_cell_serialize() {
+       do_channel_holding_cell_serialize(true, true);
+       do_channel_holding_cell_serialize(true, false);
+       do_channel_holding_cell_serialize(false, true); // last arg doesn't matter
+}
+
+#[derive(PartialEq)]
+enum HTLCStatusAtDupClaim {
+       Received,
+       HoldingCell,
+       Cleared,
+}
+fn do_test_reconnect_dup_htlc_claims(htlc_status: HTLCStatusAtDupClaim, second_fails: bool) {
+       // When receiving an update_fulfill_htlc message, we immediately forward the claim backwards
+       // along the payment path before waiting for a full commitment_signed dance. This is great, but
+       // can cause duplicative claims if a node sends an update_fulfill_htlc message, disconnects,
+       // reconnects, and then has to re-send its update_fulfill_htlc message again.
+       // In previous code, we didn't handle the double-claim correctly, spuriously closing the
+       // channel on which the inbound HTLC was received.
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()).2;
+
+       let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
+
+       let mut as_raa = None;
+       if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
+               // In order to get the HTLC claim into the holding cell at nodes[1], we need nodes[1] to be
+               // awaiting a remote revoke_and_ack from nodes[0].
+               let (_, second_payment_hash, second_payment_secret) = get_payment_preimage_hash!(nodes[1]);
+               let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(),
+                       &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, nodes[1].logger).unwrap();
+               nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret)).unwrap();
+               check_added_monitors!(nodes[0], 1);
+
+               let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
+               nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
+               nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg);
+               check_added_monitors!(nodes[1], 1);
+
+               let (bs_raa, bs_cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+               nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
+               check_added_monitors!(nodes[0], 1);
+               nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs);
+               check_added_monitors!(nodes[0], 1);
+
+               as_raa = Some(get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()));
+       }
+
+       let fulfill_msg = msgs::UpdateFulfillHTLC {
+               channel_id: chan_2,
+               htlc_id: 0,
+               payment_preimage,
+       };
+       if second_fails {
+               assert!(nodes[2].node.fail_htlc_backwards(&payment_hash));
+               expect_pending_htlcs_forwardable!(nodes[2]);
+               check_added_monitors!(nodes[2], 1);
+               get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+       } else {
+               assert!(nodes[2].node.claim_funds(payment_preimage));
+               check_added_monitors!(nodes[2], 1);
+               let cs_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+               assert_eq!(cs_updates.update_fulfill_htlcs.len(), 1);
+               // Check that the message we're about to deliver matches the one generated:
+               assert_eq!(fulfill_msg, cs_updates.update_fulfill_htlcs[0]);
+       }
+       nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &fulfill_msg);
+       check_added_monitors!(nodes[1], 1);
+
+       let mut bs_updates = None;
+       if htlc_status != HTLCStatusAtDupClaim::HoldingCell {
+               bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
+               assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
+               nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
+               expect_payment_sent!(nodes[0], payment_preimage);
+               if htlc_status == HTLCStatusAtDupClaim::Cleared {
+                       commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
+               }
+       } else {
+               assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+       }
+
+       nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
+       nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+
+       if second_fails {
+               reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
+               expect_pending_htlcs_forwardable!(nodes[1]);
+       } else {
+               reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (0, 0), (false, false));
+       }
+
+       if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
+               nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa.unwrap());
+               check_added_monitors!(nodes[1], 1);
+               expect_pending_htlcs_forwardable_ignore!(nodes[1]); // We finally receive the second payment, but don't claim it
+
+               bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
+               assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
+               nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
+               expect_payment_sent!(nodes[0], payment_preimage);
+       }
+       if htlc_status != HTLCStatusAtDupClaim::Cleared {
+               commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
+       }
+}
+
+#[test]
+fn test_reconnect_dup_htlc_claims() {
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, false);
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, false);
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, false);
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, true);
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, true);
+       do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, true);
 }