Add an Option<>al InvoiceFeatures object for the payee in get_route
[rust-lightning] / lightning / src / ln / functional_tests.rs
index 59b0d071f17c6f7728f8a46ee6b36e90bfa9bcfe..51bde6897f73620b8b1554222dcabac9ade72901 100644 (file)
@@ -15,7 +15,7 @@ use chain::Watch;
 use chain::channelmonitor;
 use chain::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
 use chain::transaction::OutPoint;
-use chain::keysinterface::{ChannelKeys, KeysInterface, SpendableOutputDescriptor};
+use chain::keysinterface::{Sign, KeysInterface};
 use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentPreimage, PaymentHash, PaymentSecret, PaymentSendFailure, BREAKDOWN_TIMEOUT};
 use ln::channel::{Channel, ChannelError};
@@ -24,22 +24,17 @@ use routing::router::{Route, RouteHop, get_route};
 use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
 use ln::msgs;
 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction};
-use util::enforcing_trait_impls::EnforcingChannelKeys;
+use util::enforcing_trait_impls::EnforcingSigner;
 use util::{byte_utils, test_utils};
 use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
 use util::errors::APIError;
-use util::ser::{Writeable, ReadableArgs, Readable};
+use util::ser::{Writeable, ReadableArgs};
 use util::config::UserConfig;
 
 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
-use bitcoin::hashes::HashEngine;
-use bitcoin::hash_types::{Txid, BlockHash, WPubkeyHash};
-use bitcoin::util::bip143;
-use bitcoin::util::address::Address;
-use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey};
+use bitcoin::hash_types::{Txid, BlockHash};
 use bitcoin::blockdata::block::{Block, BlockHeader};
-use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType, OutPoint as BitcoinOutPoint};
-use bitcoin::blockdata::script::{Builder, Script};
+use bitcoin::blockdata::script::Builder;
 use bitcoin::blockdata::opcodes;
 use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::network::constants::Network;
@@ -54,12 +49,12 @@ use regex;
 
 use std::collections::{BTreeSet, HashMap, HashSet};
 use std::default::Default;
-use std::sync::{Arc, Mutex};
+use std::sync::Mutex;
 use std::sync::atomic::Ordering;
-use std::mem;
 
 use ln::functional_test_utils::*;
-use ln::chan_utils::PreCalculatedTxCreationKeys;
+use ln::chan_utils::CommitmentTransaction;
+use ln::msgs::OptionalField::Present;
 
 #[test]
 fn test_insane_channel_opens() {
@@ -72,7 +67,7 @@ fn test_insane_channel_opens() {
        // Instantiate channel parameters where we push the maximum msats given our
        // funding satoshis
        let channel_value_sat = 31337; // same as funding satoshis
-       let channel_reserve_satoshis = Channel::<EnforcingChannelKeys>::get_holder_selected_channel_reserve_satoshis(channel_value_sat);
+       let channel_reserve_satoshis = Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(channel_value_sat);
        let push_msat = (channel_value_sat - channel_reserve_satoshis) * 1000;
 
        // Have node0 initiate a channel to node1 with aforementioned parameters
@@ -169,7 +164,7 @@ fn test_async_inbound_update_fee() {
        // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
-       nodes[1].node.send_payment(&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, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
+       nodes[1].node.send_payment(&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(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[1], 1);
 
        let payment_event = {
@@ -267,7 +262,7 @@ fn test_update_fee_unordered_raa() {
        // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
-       nodes[1].node.send_payment(&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, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
+       nodes[1].node.send_payment(&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(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[1], 1);
 
        let payment_event = {
@@ -654,7 +649,7 @@ fn test_update_fee_with_fundee_update_add_htlc() {
 
        let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]);
        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, &Vec::new(), 800000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 800000, TEST_FINAL_CLTV, &logger).unwrap();
 
        // nothing happens since node[1] is in AwaitingRemoteRevoke
        nodes[1].node.send_payment(&route, our_payment_hash, &None).unwrap();
@@ -837,9 +832,9 @@ fn pre_funding_lock_shutdown_test() {
 
        nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
        let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
-       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
-       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
 
        let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
        nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
@@ -867,9 +862,9 @@ fn updates_shutdown_wait() {
 
        nodes[0].node.close_channel(&chan_1.2).unwrap();
        let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
-       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
-       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
 
        assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -878,8 +873,8 @@ fn updates_shutdown_wait() {
 
        let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler;
        let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler;
-       let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
-       let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
        unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
 
@@ -942,7 +937,7 @@ fn htlc_fail_async_shutdown() {
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -954,13 +949,13 @@ fn htlc_fail_async_shutdown() {
 
        nodes[1].node.close_channel(&chan_1.2).unwrap();
        let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
-       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
        let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
 
        nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
        nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
        check_added_monitors!(nodes[1], 1);
-       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
 
        let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
@@ -1022,10 +1017,10 @@ fn do_test_shutdown_rebroadcast(recv_count: u8) {
        nodes[1].node.close_channel(&chan_1.2).unwrap();
        let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
        if recv_count > 0 {
-               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
+               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
                let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
                if recv_count > 1 {
-                       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+                       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
                }
        }
 
@@ -1044,14 +1039,14 @@ fn do_test_shutdown_rebroadcast(recv_count: u8) {
        nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
        let node_0_2nd_shutdown = if recv_count > 0 {
                let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
-               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
+               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
                node_0_2nd_shutdown
        } else {
                assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
-               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
+               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
                get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
        };
-       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown);
+       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_2nd_shutdown);
 
        assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -1111,10 +1106,10 @@ fn do_test_shutdown_rebroadcast(recv_count: u8) {
                let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
                assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
 
-               nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown);
+               nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_3rd_shutdown);
                assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 
-               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown);
+               nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_3rd_shutdown);
                let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
                assert!(node_0_closing_signed == node_0_2nd_closing_signed);
 
@@ -1317,7 +1312,7 @@ fn holding_cell_htlc_counting() {
        for _ in 0..::ln::channel::OUR_MAX_HTLCS {
                let (payment_preimage, payment_hash) = 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[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
+               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[1].node.send_payment(&route, payment_hash, &None).unwrap();
                payments.push((payment_preimage, payment_hash));
        }
@@ -1334,7 +1329,7 @@ fn holding_cell_htlc_counting() {
        let (_, payment_hash_1) = 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[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
+               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                unwrap_send_err!(nodes[1].node.send_payment(&route, payment_hash_1, &None), true, APIError::ChannelUnavailable { ref err },
                        assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
                assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -1345,7 +1340,7 @@ fn holding_cell_htlc_counting() {
        let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
        {
                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, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
        }
@@ -1478,7 +1473,7 @@ fn test_duplicate_htlc_different_direction_onchain() {
        let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
 
        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, &Vec::new(), 800_000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 800_000, TEST_FINAL_CLTV, &logger).unwrap();
        send_along_route_with_hash(&nodes[1], route, &vec!(&nodes[0])[..], 800_000, payment_hash);
 
        // Provide preimage to node 0 by claiming payment
@@ -1550,7 +1545,7 @@ fn test_basic_channel_reserve() {
        let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1);
        let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
        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.last().unwrap().node.get_our_node_id(), None, &Vec::new(), max_can_send + 1, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, None, &Vec::new(), max_can_send + 1, TEST_FINAL_CLTV, &logger).unwrap();
        let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
        match err {
                PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
@@ -1581,10 +1576,10 @@ fn test_fee_spike_violation_fails_htlc() {
                ($recv_value: expr) => {{
                        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
                        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler.network_graph.read().unwrap();
-                       let route = get_route(&nodes[0].node.get_our_node_id(), net_graph_msg_handler, &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
+                       let route = get_route(&nodes[0].node.get_our_node_id(), net_graph_msg_handler, &nodes.last().unwrap().node.get_our_node_id(), None, None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
                        (route, payment_hash, payment_preimage)
                }}
-       };
+       }
 
        let (route, payment_hash, _) = get_route_and_payment_hash!(3460001);
        // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
@@ -1615,98 +1610,58 @@ fn test_fee_spike_violation_fails_htlc() {
 
        const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
 
-       // Get the EnforcingChannelKeys for each channel, which will be used to (1) get the keys
+       // Get the EnforcingSigner for each channel, which will be used to (1) get the keys
        // needed to sign the new commitment tx and (2) sign the new commitment tx.
-       let (local_revocation_basepoint, local_htlc_basepoint, local_payment_point, local_secret, local_secret2) = {
+       let (local_revocation_basepoint, local_htlc_basepoint, local_secret, next_local_point) = {
                let chan_lock = nodes[0].node.channel_state.lock().unwrap();
                let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
-               let chan_keys = local_chan.get_keys();
-               let pubkeys = chan_keys.pubkeys();
-               (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
-                chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER), chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2))
+               let chan_signer = local_chan.get_signer();
+               let pubkeys = chan_signer.pubkeys();
+               (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint,
+                chan_signer.release_commitment_secret(INITIAL_COMMITMENT_NUMBER),
+                chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 2, &secp_ctx))
        };
-       let (remote_delayed_payment_basepoint, remote_htlc_basepoint, remote_payment_point, remote_secret1) = {
+       let (remote_delayed_payment_basepoint, remote_htlc_basepoint,remote_point) = {
                let chan_lock = nodes[1].node.channel_state.lock().unwrap();
                let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
-               let chan_keys = remote_chan.get_keys();
-               let pubkeys = chan_keys.pubkeys();
-               (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
-                chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 1))
+               let chan_signer = remote_chan.get_signer();
+               let pubkeys = chan_signer.pubkeys();
+               (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint,
+                chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 1, &secp_ctx))
        };
 
        // Assemble the set of keys we can use for signatures for our commitment_signed message.
-       let commitment_secret = SecretKey::from_slice(&remote_secret1).unwrap();
-       let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &commitment_secret);
-       let commit_tx_keys = chan_utils::TxCreationKeys::derive_new(&secp_ctx, &per_commitment_point, &remote_delayed_payment_basepoint,
+       let commit_tx_keys = chan_utils::TxCreationKeys::derive_new(&secp_ctx, &remote_point, &remote_delayed_payment_basepoint,
                &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint).unwrap();
 
        // Build the remote commitment transaction so we can sign it, and then later use the
        // signature for the commitment_signed message.
        let local_chan_balance = 1313;
-       let static_payment_pk = local_payment_point.serialize();
-       let remote_commit_tx_output = TxOut {
-                               script_pubkey: Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0)
-                                                            .push_slice(&WPubkeyHash::hash(&static_payment_pk)[..])
-                                                            .into_script(),
-               value: local_chan_balance as u64
-       };
-
-       let local_commit_tx_output = TxOut {
-               script_pubkey: chan_utils::get_revokeable_redeemscript(&commit_tx_keys.revocation_key,
-                                                                              BREAKDOWN_TIMEOUT,
-                                                                              &commit_tx_keys.broadcaster_delayed_payment_key).to_v0_p2wsh(),
-                               value: 95000,
-       };
 
        let accepted_htlc_info = chan_utils::HTLCOutputInCommitment {
                offered: false,
                amount_msat: 3460001,
                cltv_expiry: htlc_cltv,
-               payment_hash: payment_hash,
+               payment_hash,
                transaction_output_index: Some(1),
        };
 
-       let htlc_output = TxOut {
-               script_pubkey: chan_utils::get_htlc_redeemscript(&accepted_htlc_info, &commit_tx_keys).to_v0_p2wsh(),
-               value: 3460001 / 1000
-       };
+       let commitment_number = INITIAL_COMMITMENT_NUMBER - 1;
 
-       let commit_tx_obscure_factor = {
-               let mut sha = Sha256::engine();
-               let remote_payment_point = &remote_payment_point.serialize();
-               sha.input(&local_payment_point.serialize());
-               sha.input(remote_payment_point);
-               let res = Sha256::from_engine(sha).into_inner();
-
-               ((res[26] as u64) << 5*8) |
-               ((res[27] as u64) << 4*8) |
-               ((res[28] as u64) << 3*8) |
-               ((res[29] as u64) << 2*8) |
-               ((res[30] as u64) << 1*8) |
-               ((res[31] as u64) << 0*8)
-       };
-       let commitment_number = 1;
-       let obscured_commitment_transaction_number = commit_tx_obscure_factor ^ commitment_number;
-       let lock_time = ((0x20 as u32) << 8*3) | ((obscured_commitment_transaction_number & 0xffffffu64) as u32);
-       let input = TxIn {
-               previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
-               script_sig: Script::new(),
-               sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32),
-               witness: Vec::new(),
-       };
-
-       let commit_tx = Transaction {
-               version: 2,
-               lock_time,
-               input: vec![input],
-               output: vec![remote_commit_tx_output, htlc_output, local_commit_tx_output],
-       };
        let res = {
                let local_chan_lock = nodes[0].node.channel_state.lock().unwrap();
                let local_chan = local_chan_lock.by_id.get(&chan.2).unwrap();
-               let local_chan_keys = local_chan.get_keys();
-               let pre_commit_tx_keys = PreCalculatedTxCreationKeys::new(commit_tx_keys);
-               local_chan_keys.sign_counterparty_commitment(feerate_per_kw, &commit_tx, &pre_commit_tx_keys, &[&accepted_htlc_info], &secp_ctx).unwrap()
+               let local_chan_signer = local_chan.get_signer();
+               let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
+                       commitment_number,
+                       95000,
+                       local_chan_balance,
+                       commit_tx_keys.clone(),
+                       feerate_per_kw,
+                       &mut vec![(accepted_htlc_info, ())],
+                       &local_chan.channel_transaction_parameters.as_counterparty_broadcastable()
+               );
+               local_chan_signer.sign_counterparty_commitment(&commitment_tx, &secp_ctx).unwrap()
        };
 
        let commit_signed_msg = msgs::CommitmentSigned {
@@ -1720,10 +1675,11 @@ fn test_fee_spike_violation_fails_htlc() {
        let _ = nodes[1].node.get_and_clear_pending_msg_events();
 
        // Send the RAA to nodes[1].
-       let per_commitment_secret = local_secret;
-       let next_secret = SecretKey::from_slice(&local_secret2).unwrap();
-       let next_per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &next_secret);
-       let raa_msg = msgs::RevokeAndACK{ channel_id: chan.2, per_commitment_secret, next_per_commitment_point};
+       let raa_msg = msgs::RevokeAndACK {
+               channel_id: chan.2,
+               per_commitment_secret: local_secret,
+               next_per_commitment_point: next_local_point
+       };
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_msg);
 
        let events = nodes[1].node.get_and_clear_pending_msg_events();
@@ -1745,8 +1701,9 @@ fn test_fee_spike_violation_fails_htlc() {
 fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
        let mut chanmon_cfgs = create_chanmon_cfgs(2);
        // Set the fee rate for the channel very high, to the point where the fundee
-       // sending any amount would result in a channel reserve violation. In this test
-       // we check that we would be prevented from sending an HTLC in this situation.
+       // sending any above-dust amount would result in a channel reserve violation.
+       // In this test we check that we would be prevented from sending an HTLC in
+       // this situation.
        chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
        chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
@@ -1759,12 +1716,12 @@ fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
                ($recv_value: expr) => {{
                        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
                        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.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
+                       let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
                        (route, payment_hash, payment_preimage)
                }}
-       };
+       }
 
-       let (route, our_payment_hash, _) = get_route_and_payment_hash!(1000);
+       let (route, our_payment_hash, _) = get_route_and_payment_hash!(4843000);
        unwrap_send_err!(nodes[1].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
                assert_eq!(err, "Cannot send value that would put counterparty balance under holder-announced channel reserve value"));
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -1791,10 +1748,10 @@ fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
                ($recv_value: expr) => {{
                        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
                        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-                       let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
+                       let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
                        (route, payment_hash, payment_preimage)
                }}
-       };
+       }
 
        let (route, payment_hash, _) = get_route_and_payment_hash!(1000);
        // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
@@ -1822,6 +1779,57 @@ fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
        check_added_monitors!(nodes[0], 1);
 }
 
+#[test]
+fn test_chan_reserve_dust_inbound_htlcs_outbound_chan() {
+       // Test that if we receive many dust HTLCs over an outbound channel, they don't count when
+       // calculating our commitment transaction fee (this was previously broken).
+       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, None]);
+       let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       // Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
+       // channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
+       // transaction fee with 0 HTLCs (183 sats)).
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98817000, InitFeatures::known(), InitFeatures::known());
+
+       let dust_amt = 546000; // Dust amount
+       // In the previous code, routing this dust payment would cause nodes[0] to perceive a channel
+       // reserve violation even though it's a dust HTLC and therefore shouldn't count towards the
+       // commitment transaction fee.
+       let (_, _) = route_payment(&nodes[1], &[&nodes[0]], dust_amt);
+}
+
+#[test]
+fn test_chan_reserve_dust_inbound_htlcs_inbound_chan() {
+       // Test that if we receive many dust HTLCs over an inbound channel, they don't count when
+       // calculating our counterparty's commitment transaction fee (this was previously broken).
+       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, None]);
+       let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98000000, InitFeatures::known(), InitFeatures::known());
+
+       let payment_amt = 46000; // Dust amount
+       // In the previous code, these first four payments would succeed.
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+
+       // Then these next 5 would be interpreted by nodes[1] as violating the fee spike buffer.
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+
+       // And this last payment previously resulted in nodes[1] closing on its inbound-channel
+       // counterparty, because it counted all the previous dust HTLCs against nodes[0]'s commitment
+       // transaction fee and therefore perceived this next payment as a channel reserve violation.
+       let (_, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
+}
+
 #[test]
 fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
        let chanmon_cfgs = create_chanmon_cfgs(3);
@@ -1836,10 +1844,10 @@ fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
                ($recv_value: expr) => {{
                        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
                        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.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
+                       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
                        (route, payment_hash, payment_preimage)
                }}
-       };
+       }
 
        let feemsat = 239;
        let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
@@ -1937,10 +1945,10 @@ fn test_channel_reserve_holding_cell_htlcs() {
                ($recv_value: expr) => {{
                        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
                        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.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
+                       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
                        (route, payment_hash, payment_preimage)
                }}
-       };
+       }
 
        macro_rules! expect_forward {
                ($node: expr) => {{
@@ -1960,7 +1968,8 @@ fn test_channel_reserve_holding_cell_htlcs() {
 
        // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
        {
-               let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1);
+               let (mut route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0);
+               route.paths[0].last_mut().unwrap().fee_msat += 1;
                assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
                unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
                        assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
@@ -2133,23 +2142,6 @@ fn test_channel_reserve_holding_cell_htlcs() {
 
        let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
        let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
-       {
-               let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_3 + 1);
-               let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
-               match err {
-                       PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
-                               match &fails[0] {
-                                       &APIError::ChannelUnavailable{ref err} =>
-                                               assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)),
-                                       _ => panic!("Unexpected error variant"),
-                               }
-                       },
-                       _ => panic!("Unexpected error variant"),
-               }
-               assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
-               nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put our balance under counterparty-announced channel reserve value".to_string(), 3);
-       }
-
        send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3, recv_value_3);
 
        let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
@@ -2202,7 +2194,7 @@ fn channel_reserve_in_flight_removes() {
        let (payment_preimage_3, payment_hash_3) = get_payment_preimage_hash!(nodes[0]);
        let send_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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, payment_hash_3, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
@@ -2275,7 +2267,7 @@ fn channel_reserve_in_flight_removes() {
        let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[1]);
        let send_2 = {
                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, &[], 10000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 10000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[1].node.send_payment(&route, payment_hash_4, &None).unwrap();
                check_added_monitors!(nodes[1], 1);
                let mut events = nodes[1].node.get_and_clear_pending_msg_events();
@@ -2510,7 +2502,9 @@ fn test_justice_tx() {
        bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
        bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
        let user_cfgs = [Some(alice_config), Some(bob_config)];
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
+       chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -2640,7 +2634,8 @@ fn revoked_output_claim() {
 #[test]
 fn claim_htlc_outputs_shared_tx() {
        // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -2710,7 +2705,8 @@ fn claim_htlc_outputs_shared_tx() {
 #[test]
 fn claim_htlc_outputs_single_tx() {
        // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -3224,7 +3220,7 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(&nodes[1].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[1].node.send_payment(&route, fourth_payment_hash, &None).unwrap();
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
        assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
@@ -3370,7 +3366,7 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
        {
                let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
                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, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
 
@@ -3387,7 +3383,7 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
        let (_, failed_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        {
                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, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, failed_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 0);
 
@@ -3402,7 +3398,7 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
                let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
                let current_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
                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, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
                let (onion_payloads, _amount_msat, cltv_expiry) = onion_utils::build_onion_payloads(&route.paths[0], 50_000, &None, current_height).unwrap();
                let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
                let onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
@@ -3436,7 +3432,7 @@ fn test_htlc_ignore_latest_remote_commitment() {
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
 
        route_payment(&nodes[0], &[&nodes[1]], 10000000);
-       nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id);
+       nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
        check_closed_broadcast!(nodes[0], false);
        check_added_monitors!(nodes[0], 1);
 
@@ -3468,7 +3464,7 @@ fn test_force_close_fail_back() {
 
        let mut payment_event = {
                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, &Vec::new(), 1000000, 42, &logger).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(), None, None, &Vec::new(), 1000000, 42, &logger).unwrap();
                nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
 
@@ -3497,7 +3493,7 @@ fn test_force_close_fail_back() {
        // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
        // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
 
-       nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id);
+       nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id).unwrap();
        check_closed_broadcast!(nodes[2], false);
        check_added_monitors!(nodes[2], 1);
        let tx = {
@@ -3521,9 +3517,9 @@ fn test_force_close_fail_back() {
 
        // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
        {
-               let mut monitors = nodes[2].chain_monitor.chain_monitor.monitors.lock().unwrap();
-               monitors.get_mut(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
-                       .provide_payment_preimage(&our_payment_hash, &our_payment_preimage);
+               let mut monitors = nodes[2].chain_monitor.chain_monitor.monitors.read().unwrap();
+               monitors.get(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
+                       .provide_payment_preimage(&our_payment_hash, &our_payment_preimage, &node_cfgs[2].tx_broadcaster, &node_cfgs[2].fee_estimator, &&logger);
        }
        connect_block(&nodes[2], &block, 1);
        let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
@@ -3536,37 +3532,6 @@ fn test_force_close_fail_back() {
        check_spends!(node_txn[0], tx);
 }
 
-#[test]
-fn test_unconf_chan() {
-       // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side
-       let chanmon_cfgs = create_chanmon_cfgs(2);
-       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
-       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
-       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-
-       let channel_state = nodes[0].node.channel_state.lock().unwrap();
-       assert_eq!(channel_state.by_id.len(), 1);
-       assert_eq!(channel_state.short_to_id.len(), 1);
-       mem::drop(channel_state);
-
-       let mut headers = Vec::new();
-       let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-       headers.push(header.clone());
-       for _i in 2..100 {
-               header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-               headers.push(header.clone());
-       }
-       while !headers.is_empty() {
-               nodes[0].node.block_disconnected(&headers.pop().unwrap());
-       }
-       check_closed_broadcast!(nodes[0], false);
-       check_added_monitors!(nodes[0], 1);
-       let channel_state = nodes[0].node.channel_state.lock().unwrap();
-       assert_eq!(channel_state.by_id.len(), 0);
-       assert_eq!(channel_state.short_to_id.len(), 0);
-}
-
 #[test]
 fn test_simple_peer_disconnect() {
        // Test that we can reconnect when there are no lost messages
@@ -3643,7 +3608,7 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
        let payment_event = {
                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(), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
+                       &nodes[1].node.get_our_node_id(), None, Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
                        &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
@@ -3820,7 +3785,7 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
        // Channel should still work fine...
        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(), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
+               &nodes[1].node.get_our_node_id(), None, Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
                &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
        claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
@@ -3922,7 +3887,7 @@ fn test_funding_peer_disconnect() {
 
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       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, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
        claim_payment(&nodes[0], &[&nodes[1]], payment_preimage, 1_000_000);
 }
@@ -3943,7 +3908,7 @@ fn test_drop_messages_peer_disconnect_dual_htlc() {
        // 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 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, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
 
@@ -4084,7 +4049,7 @@ fn do_test_htlc_timeout(send_partial_mpp: bool) {
 
        let our_payment_hash = if send_partial_mpp {
                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, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                let (_, our_payment_hash) = get_payment_preimage_hash!(&nodes[0]);
                let payment_secret = PaymentSecret([0xdb; 32]);
                // Use the utility function send_payment_along_path to send the payment with MPP data which
@@ -4150,7 +4115,7 @@ fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
        let (_, first_payment_hash) = 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[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
+               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[1].node.send_payment(&route, first_payment_hash, &None).unwrap();
        }
        assert_eq!(nodes[1].node.get_and_clear_pending_msg_events().len(), 1);
@@ -4160,7 +4125,7 @@ fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
        let (_, second_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        if forwarded_htlc {
                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, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, second_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
                let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
@@ -4170,7 +4135,7 @@ fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
                check_added_monitors!(nodes[1], 0);
        } else {
                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[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
+               let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[1].node.send_payment(&route, second_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[1], 0);
        }
@@ -4241,8 +4206,8 @@ fn test_invalid_channel_announcement() {
 
        nodes[0].net_graph_msg_handler.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
 
-       let as_bitcoin_key = as_chan.get_keys().inner.holder_channel_pubkeys.funding_pubkey;
-       let bs_bitcoin_key = bs_chan.get_keys().inner.holder_channel_pubkeys.funding_pubkey;
+       let as_bitcoin_key = as_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
+       let bs_bitcoin_key = bs_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
 
        let as_network_key = nodes[0].node.get_our_node_id();
        let bs_network_key = nodes[1].node.get_our_node_id();
@@ -4269,8 +4234,8 @@ fn test_invalid_channel_announcement() {
        macro_rules! sign_msg {
                ($unsigned_msg: expr) => {
                        let msghash = Message::from_slice(&Sha256dHash::hash(&$unsigned_msg.encode()[..])[..]).unwrap();
-                       let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_keys().inner.funding_key);
-                       let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_keys().inner.funding_key);
+                       let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_signer().inner.funding_key);
+                       let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_signer().inner.funding_key);
                        let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
                        let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
                        chan_announcement = msgs::ChannelAnnouncement {
@@ -4307,9 +4272,9 @@ fn test_no_txn_manager_serialize_deserialize() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let logger: test_utils::TestLogger;
        let fee_estimator: test_utils::TestFeeEstimator;
+       let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let keys_manager: test_utils::TestKeysInterface;
-       let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       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 tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
@@ -4318,25 +4283,27 @@ fn test_no_txn_manager_serialize_deserialize() {
 
        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.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
+       nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
 
        logger = test_utils::TestLogger::new();
        fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
+       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(), &logger, &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<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
+       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();
-       keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
        let (_, nodes_0_deserialized_tmp) = {
                let mut channel_monitors = HashMap::new();
                channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(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: &keys_manager,
+                       keys_manager,
                        fee_estimator: &fee_estimator,
                        chain_monitor: nodes[0].chain_monitor,
                        tx_broadcaster: nodes[0].tx_broadcaster.clone(),
@@ -4380,10 +4347,10 @@ fn test_manager_serialize_deserialize_events() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let fee_estimator: test_utils::TestFeeEstimator;
+       let persister: test_utils::TestPersister;
        let logger: test_utils::TestLogger;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let keys_manager: test_utils::TestKeysInterface;
-       let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       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);
 
        // Start creating a channel, but stop right before broadcasting the event message FundingBroadcastSafe
@@ -4391,8 +4358,8 @@ fn test_manager_serialize_deserialize_events() {
        let push_msat = 10001;
        let a_flags = InitFeatures::known();
        let b_flags = InitFeatures::known();
-       let node_a = nodes.pop().unwrap();
-       let node_b = nodes.pop().unwrap();
+       let node_a = nodes.remove(0);
+       let node_b = nodes.remove(0);
        node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
        node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), a_flags, &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id()));
        node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), b_flags, &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id()));
@@ -4425,25 +4392,27 @@ fn test_manager_serialize_deserialize_events() {
        // Start the de/seriailization process mid-channel creation to check that the channel manager will hold onto events that are serialized
        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.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
+       nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
 
        fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
        logger = test_utils::TestLogger::new();
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
+       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(), &logger, &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<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
+       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();
-       keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
        let (_, nodes_0_deserialized_tmp) = {
                let mut channel_monitors = HashMap::new();
                channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(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: &keys_manager,
+                       keys_manager,
                        fee_estimator: &fee_estimator,
                        chain_monitor: nodes[0].chain_monitor,
                        tx_broadcaster: nodes[0].tx_broadcaster.clone(),
@@ -4502,9 +4471,9 @@ fn test_simple_manager_serialize_deserialize() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let logger: test_utils::TestLogger;
        let fee_estimator: test_utils::TestFeeEstimator;
+       let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let keys_manager: test_utils::TestKeysInterface;
-       let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       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);
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
 
@@ -4515,24 +4484,26 @@ fn test_simple_manager_serialize_deserialize() {
 
        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.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
+       nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
 
        logger = test_utils::TestLogger::new();
        fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
+       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(), &logger, &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<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
+       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[..];
-       keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
        let (_, nodes_0_deserialized_tmp) = {
                let mut channel_monitors = HashMap::new();
                channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(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: UserConfig::default(),
-                       keys_manager: &keys_manager,
+                       keys_manager,
                        fee_estimator: &fee_estimator,
                        chain_monitor: nodes[0].chain_monitor,
                        tx_broadcaster: nodes[0].tx_broadcaster.clone(),
@@ -4561,18 +4532,18 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let logger: test_utils::TestLogger;
        let fee_estimator: test_utils::TestFeeEstimator;
+       let persister: test_utils::TestPersister;
        let new_chain_monitor: test_utils::TestChainMonitor;
-       let keys_manager: test_utils::TestKeysInterface;
-       let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+       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(4, &node_cfgs, &node_chanmgrs);
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
        create_announced_chan_between_nodes(&nodes, 2, 0, InitFeatures::known(), InitFeatures::known());
        let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
 
        let mut node_0_stale_monitors_serialized = Vec::new();
-       for monitor in nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter() {
+       for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
                let mut writer = test_utils::TestVecWriter(Vec::new());
-               monitor.1.write_for_disk(&mut writer).unwrap();
+               monitor.1.write(&mut writer).unwrap();
                node_0_stale_monitors_serialized.push(writer.0);
        }
 
@@ -4589,21 +4560,24 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
        // nodes[3])
        let mut node_0_monitors_serialized = Vec::new();
-       for monitor in nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter() {
+       for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
                let mut writer = test_utils::TestVecWriter(Vec::new());
-               monitor.1.write_for_disk(&mut writer).unwrap();
+               monitor.1.write(&mut writer).unwrap();
                node_0_monitors_serialized.push(writer.0);
        }
 
        logger = test_utils::TestLogger::new();
        fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
-       new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
+       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(), &logger, &fee_estimator, &persister, keys_manager);
        nodes[0].chain_monitor = &new_chain_monitor;
 
+
        let mut node_0_stale_monitors = Vec::new();
        for serialized in node_0_stale_monitors_serialized.iter() {
                let mut read = &serialized[..];
-               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
+               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
                assert!(read.is_empty());
                node_0_stale_monitors.push(monitor);
        }
@@ -4611,18 +4585,16 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
        let mut node_0_monitors = Vec::new();
        for serialized in node_0_monitors_serialized.iter() {
                let mut read = &serialized[..];
-               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
+               let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
                assert!(read.is_empty());
                node_0_monitors.push(monitor);
        }
 
-       keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
-
        let mut nodes_0_read = &nodes_0_serialized[..];
        if let Err(msgs::DecodeError::InvalidValue) =
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(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: UserConfig::default(),
-               keys_manager: &keys_manager,
+               keys_manager,
                fee_estimator: &fee_estimator,
                chain_monitor: nodes[0].chain_monitor,
                tx_broadcaster: nodes[0].tx_broadcaster.clone(),
@@ -4634,9 +4606,9 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
 
        let mut nodes_0_read = &nodes_0_serialized[..];
        let (_, nodes_0_deserialized_tmp) =
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
+               <(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: UserConfig::default(),
-               keys_manager: &keys_manager,
+               keys_manager,
                fee_estimator: &fee_estimator,
                chain_monitor: nodes[0].chain_monitor,
                tx_broadcaster: nodes[0].tx_broadcaster.clone(),
@@ -4684,117 +4656,26 @@ fn test_manager_serialize_deserialize_inconsistent_monitor() {
 macro_rules! check_spendable_outputs {
        ($node: expr, $der_idx: expr, $keysinterface: expr, $chan_value: expr) => {
                {
-                       let events = $node.chain_monitor.chain_monitor.get_and_clear_pending_events();
+                       let mut events = $node.chain_monitor.chain_monitor.get_and_clear_pending_events();
                        let mut txn = Vec::new();
-                       for event in events {
+                       let mut all_outputs = Vec::new();
+                       let secp_ctx = Secp256k1::new();
+                       for event in events.drain(..) {
                                match event {
-                                       Event::SpendableOutputs { ref outputs } => {
-                                               for outp in outputs {
-                                                       match *outp {
-                                                               SpendableOutputDescriptor::StaticOutputCounterpartyPayment { ref outpoint, ref output, ref key_derivation_params } => {
-                                                                       let input = TxIn {
-                                                                               previous_output: outpoint.into_bitcoin_outpoint(),
-                                                                               script_sig: Script::new(),
-                                                                               sequence: 0,
-                                                                               witness: Vec::new(),
-                                                                       };
-                                                                       let outp = TxOut {
-                                                                               script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
-                                                                               value: output.value,
-                                                                       };
-                                                                       let mut spend_tx = Transaction {
-                                                                               version: 2,
-                                                                               lock_time: 0,
-                                                                               input: vec![input],
-                                                                               output: vec![outp],
-                                                                       };
-                                                                       let secp_ctx = Secp256k1::new();
-                                                                       let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
-                                                                       let remotepubkey = keys.pubkeys().payment_point;
-                                                                       let witness_script = Address::p2pkh(&::bitcoin::PublicKey{compressed: true, key: remotepubkey}, Network::Testnet).script_pubkey();
-                                                                       let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
-                                                                       let remotesig = secp_ctx.sign(&sighash, &keys.inner.payment_key);
-                                                                       spend_tx.input[0].witness.push(remotesig.serialize_der().to_vec());
-                                                                       spend_tx.input[0].witness[0].push(SigHashType::All as u8);
-                                                                       spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec());
-                                                                       txn.push(spend_tx);
-                                                               },
-                                                               SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref revocation_pubkey } => {
-                                                                       let input = TxIn {
-                                                                               previous_output: outpoint.into_bitcoin_outpoint(),
-                                                                               script_sig: Script::new(),
-                                                                               sequence: *to_self_delay as u32,
-                                                                               witness: Vec::new(),
-                                                                       };
-                                                                       let outp = TxOut {
-                                                                               script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
-                                                                               value: output.value,
-                                                                       };
-                                                                       let mut spend_tx = Transaction {
-                                                                               version: 2,
-                                                                               lock_time: 0,
-                                                                               input: vec![input],
-                                                                               output: vec![outp],
-                                                                       };
-                                                                       let secp_ctx = Secp256k1::new();
-                                                                       let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
-                                                                       if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &keys.inner.delayed_payment_base_key) {
-
-                                                                               let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key);
-                                                                               let witness_script = chan_utils::get_revokeable_redeemscript(revocation_pubkey, *to_self_delay, &delayed_payment_pubkey);
-                                                                               let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
-                                                                               let local_delayedsig = secp_ctx.sign(&sighash, &delayed_payment_key);
-                                                                               spend_tx.input[0].witness.push(local_delayedsig.serialize_der().to_vec());
-                                                                               spend_tx.input[0].witness[0].push(SigHashType::All as u8);
-                                                                               spend_tx.input[0].witness.push(vec!()); //MINIMALIF
-                                                                               spend_tx.input[0].witness.push(witness_script.clone().into_bytes());
-                                                                       } else { panic!() }
-                                                                       txn.push(spend_tx);
-                                                               },
-                                                               SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => {
-                                                                       let secp_ctx = Secp256k1::new();
-                                                                       let input = TxIn {
-                                                                               previous_output: outpoint.into_bitcoin_outpoint(),
-                                                                               script_sig: Script::new(),
-                                                                               sequence: 0,
-                                                                               witness: Vec::new(),
-                                                                       };
-                                                                       let outp = TxOut {
-                                                                               script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
-                                                                               value: output.value,
-                                                                       };
-                                                                       let mut spend_tx = Transaction {
-                                                                               version: 2,
-                                                                               lock_time: 0,
-                                                                               input: vec![input],
-                                                                               output: vec![outp.clone()],
-                                                                       };
-                                                                       let secret = {
-                                                                               match ExtendedPrivKey::new_master(Network::Testnet, &$node.node_seed) {
-                                                                                       Ok(master_key) => {
-                                                                                               match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx).expect("key space exhausted")) {
-                                                                                                       Ok(key) => key,
-                                                                                                       Err(_) => panic!("Your RNG is busted"),
-                                                                                               }
-                                                                                       }
-                                                                                       Err(_) => panic!("Your rng is busted"),
-                                                                               }
-                                                                       };
-                                                                       let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key;
-                                                                       let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey();
-                                                                       let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
-                                                                       let sig = secp_ctx.sign(&sighash, &secret.private_key.key);
-                                                                       spend_tx.input[0].witness.push(sig.serialize_der().to_vec());
-                                                                       spend_tx.input[0].witness[0].push(SigHashType::All as u8);
-                                                                       spend_tx.input[0].witness.push(pubkey.key.serialize().to_vec());
-                                                                       txn.push(spend_tx);
-                                                               },
-                                                       }
+                                       Event::SpendableOutputs { mut outputs } => {
+                                               for outp in outputs.drain(..) {
+                                                       txn.push($keysinterface.backing.spend_spendable_outputs(&[&outp], Vec::new(), Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &secp_ctx).unwrap());
+                                                       all_outputs.push(outp);
                                                }
                                        },
                                        _ => panic!("Unexpected event"),
                                };
                        }
+                       if all_outputs.len() > 1 {
+                               if let Ok(tx) = $keysinterface.backing.spend_spendable_outputs(&all_outputs.iter().map(|a| a).collect::<Vec<_>>(), Vec::new(), Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &secp_ctx) {
+                                       txn.push(tx);
+                               }
+                       }
                        txn
                }
        }
@@ -4809,7 +4690,7 @@ fn test_claim_sizeable_push_msat() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
-       nodes[1].node.force_close_channel(&chan.2);
+       nodes[1].node.force_close_channel(&chan.2).unwrap();
        check_closed_broadcast!(nodes[1], false);
        check_added_monitors!(nodes[1], 1);
        let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
@@ -4836,7 +4717,7 @@ fn test_claim_on_remote_sizeable_push_msat() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
-       nodes[0].node.force_close_channel(&chan.2);
+       nodes[0].node.force_close_channel(&chan.2).unwrap();
        check_closed_broadcast!(nodes[0], false);
        check_added_monitors!(nodes[0], 1);
 
@@ -4852,8 +4733,7 @@ fn test_claim_on_remote_sizeable_push_msat() {
        connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
 
        let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
-       assert_eq!(spend_txn.len(), 2);
-       assert_eq!(spend_txn[0], spend_txn[1]);
+       assert_eq!(spend_txn.len(), 1);
        check_spends!(spend_txn[0], node_txn[0]);
 }
 
@@ -4886,9 +4766,9 @@ fn test_claim_on_remote_revoked_sizeable_push_msat() {
 
        let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
        assert_eq!(spend_txn.len(), 3);
-       assert_eq!(spend_txn[0], spend_txn[1]); // to_remote output on revoked remote commitment_tx
-       check_spends!(spend_txn[0], revoked_local_txn[0]);
-       check_spends!(spend_txn[2], node_txn[0]);
+       check_spends!(spend_txn[0], revoked_local_txn[0]); // to_remote output on revoked remote commitment_tx
+       check_spends!(spend_txn[1], node_txn[0]);
+       check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[0]); // Both outputs
 }
 
 #[test]
@@ -4983,8 +4863,10 @@ fn test_static_spendable_outputs_timeout_tx() {
        expect_payment_failed!(nodes[1], our_payment_hash, true);
 
        let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
-       assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote (*2), timeout_tx.output (*1)
-       check_spends!(spend_txn[2], node_txn[0].clone());
+       assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote, timeout_tx.output
+       check_spends!(spend_txn[0], commitment_tx[0]);
+       check_spends!(spend_txn[1], node_txn[0]);
+       check_spends!(spend_txn[2], node_txn[0], commitment_tx[0]); // All outputs
 }
 
 #[test]
@@ -5025,7 +4907,8 @@ fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
 
 #[test]
 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -5091,7 +4974,8 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
 
 #[test]
 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -5159,12 +5043,12 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
 
        // Check A's ChannelMonitor was able to generate the right spendable output descriptor
        let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
-       assert_eq!(spend_txn.len(), 3); // Duplicated SpendableOutput due to block rescan after revoked htlc output tracking
-       assert_eq!(spend_txn[0], spend_txn[1]);
+       assert_eq!(spend_txn.len(), 3);
        assert_eq!(spend_txn[0].input.len(), 1);
        check_spends!(spend_txn[0], revoked_local_txn[0]); // spending to_remote output from revoked local tx
        assert_ne!(spend_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
-       check_spends!(spend_txn[2], node_txn[1]); // spending justice tx output on the htlc success tx
+       check_spends!(spend_txn[1], node_txn[1]); // spending justice tx output on the htlc success tx
+       check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[1]); // Both outputs
 }
 
 #[test]
@@ -5228,7 +5112,7 @@ fn test_onchain_to_onchain_claim() {
                assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
                assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
                assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
-               check_spends!(b_txn[0], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan
+               check_spends!(b_txn[0], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor
                assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
                assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
                assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
@@ -5397,6 +5281,7 @@ fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
        let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
+       assert_eq!(local_txn.len(), 1);
        assert_eq!(local_txn[0].input.len(), 1);
        check_spends!(local_txn[0], chan_1.3);
 
@@ -5417,10 +5302,13 @@ fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
        }
        let node_txn = {
                let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               assert_eq!(node_txn.len(), 3);
+               assert_eq!(node_txn[0], node_txn[2]);
+               assert_eq!(node_txn[1], local_txn[0]);
                assert_eq!(node_txn[0].input.len(), 1);
                assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
                check_spends!(node_txn[0], local_txn[0]);
-               vec![node_txn[0].clone(), node_txn[2].clone()]
+               vec![node_txn[0].clone()]
        };
 
        let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
@@ -5429,9 +5317,8 @@ fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
 
        // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
        let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
-       assert_eq!(spend_txn.len(), 2);
+       assert_eq!(spend_txn.len(), 1);
        check_spends!(spend_txn[0], node_txn[0]);
-       check_spends!(spend_txn[1], node_txn[1]);
 }
 
 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
@@ -5471,7 +5358,7 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        let (_, payment_hash_2) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
        let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
        let our_node_id = &nodes[1].node.get_our_node_id();
-       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
        // 2nd HTLC:
        send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_1); // not added < dust limit + HTLC tx fee
        // 3rd HTLC:
@@ -5480,7 +5367,7 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        let (_, payment_hash_3) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
        // 5th HTLC:
        let (_, payment_hash_4) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
-       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        // 6th HTLC:
        send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_3);
        // 7th HTLC:
@@ -5489,13 +5376,13 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        // 8th HTLC:
        let (_, payment_hash_5) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
        // 9th HTLC:
-       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
        send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_5); // not added < dust limit + HTLC tx fee
 
        // 10th HTLC:
        let (_, payment_hash_6) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
        // 11th HTLC:
-       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
+       let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_6);
 
        // Double-check that six of the new HTLC were added
@@ -5727,9 +5614,9 @@ fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
        // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
        let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
        assert_eq!(spend_txn.len(), 3);
-       assert_eq!(spend_txn[0], spend_txn[1]);
        check_spends!(spend_txn[0], local_txn[0]);
-       check_spends!(spend_txn[2], htlc_timeout);
+       check_spends!(spend_txn[1], htlc_timeout);
+       check_spends!(spend_txn[2], local_txn[0], htlc_timeout);
 }
 
 #[test]
@@ -5743,8 +5630,8 @@ fn test_key_derivation_params() {
        // We manually create the node configuration to backup the seed.
        let seed = [42; 32];
        let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
-       let chain_monitor = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator);
-       let node = NodeCfg { chain_source: &chanmon_cfgs[0].chain_source, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chain_monitor, keys_manager, node_seed: seed };
+       let chain_monitor = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator, &chanmon_cfgs[0].persister, &keys_manager);
+       let node = NodeCfg { chain_source: &chanmon_cfgs[0].chain_source, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chain_monitor, keys_manager: &keys_manager, node_seed: seed };
        let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        node_cfgs.remove(0);
        node_cfgs.insert(0, node);
@@ -5798,9 +5685,9 @@ fn test_key_derivation_params() {
        let new_keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
        let spend_txn = check_spendable_outputs!(nodes[0], 1, new_keys_manager, 100000);
        assert_eq!(spend_txn.len(), 3);
-       assert_eq!(spend_txn[0], spend_txn[1]);
        check_spends!(spend_txn[0], local_txn_1[0]);
-       check_spends!(spend_txn[2], htlc_timeout);
+       check_spends!(spend_txn[1], htlc_timeout);
+       check_spends!(spend_txn[2], local_txn_1[0], htlc_timeout);
 }
 
 #[test]
@@ -5885,7 +5772,7 @@ fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
 
        let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
 
@@ -6089,7 +5976,7 @@ fn test_fail_holding_cell_htlc_upon_free() {
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 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, &[], max_can_send, TEST_FINAL_CLTV, &logger).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(), None, None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
 
        // Send a payment which passes reserve checks but gets stuck in the holding cell.
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
@@ -6164,8 +6051,8 @@ fn test_free_and_fail_holding_cell_htlcs() {
        let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
        let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1) - amt_1;
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let route_1 = 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, &[], amt_1, TEST_FINAL_CLTV, &logger).unwrap();
-       let route_2 = 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, &[], amt_2, TEST_FINAL_CLTV, &logger).unwrap();
+       let route_1 = 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, &[], amt_1, TEST_FINAL_CLTV, &logger).unwrap();
+       let route_2 = 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, &[], amt_2, TEST_FINAL_CLTV, &logger).unwrap();
 
        // Send 2 payments which pass reserve checks but get stuck in the holding cell.
        nodes[0].node.send_payment(&route_1, payment_hash_1, &None).unwrap();
@@ -6288,7 +6175,7 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
        let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1) - total_routing_fee_msat;
        let payment_event = {
                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, &[], max_can_send, TEST_FINAL_CLTV, &logger).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(), None, None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
 
@@ -6404,7 +6291,7 @@ fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       let mut 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, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let mut 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, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        route.paths[0][0].fee_msat = 100;
 
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
@@ -6425,7 +6312,7 @@ fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
 
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       let mut 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, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let mut 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, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        route.paths[0][0].fee_msat = 0;
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
                assert_eq!(err, "Cannot send 0-msat HTLC"));
@@ -6446,7 +6333,7 @@ fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6466,13 +6353,13 @@ fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 0, InitFeatures::known(), InitFeatures::known());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
        let logger = test_utils::TestLogger::new();
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
 
        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, &[], 100000000, 500000001, &logger).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(), None, None, &[], 100000000, 500000001, &logger).unwrap();
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::RouteError { ref err },
                assert_eq!(err, &"Channel CLTV overflowed?"));
 }
@@ -6494,7 +6381,7 @@ fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment()
                let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
                let payment_event = {
                        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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
                        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
                        check_added_monitors!(nodes[0], 1);
 
@@ -6516,7 +6403,7 @@ fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment()
        }
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
                assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
 
@@ -6538,9 +6425,13 @@ fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
        send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight, max_in_flight);
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
-       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let logger = test_utils::TestLogger::new();
-       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, &[], max_in_flight+1, TEST_FINAL_CLTV, &logger).unwrap();
+       // Manually create a route over our max in flight (which our router normally automatically
+       // limits us to.
+       let route = Route { paths: vec![vec![RouteHop {
+          pubkey: nodes[1].node.get_our_node_id(), node_features: NodeFeatures::known(), channel_features: ChannelFeatures::known(),
+          short_channel_id: nodes[1].node.list_usable_channels()[0].short_channel_id.unwrap(),
+          fee_msat: max_in_flight + 1, cltv_expiry_delta: TEST_FINAL_CLTV
+       }]] };
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
                assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
 
@@ -6569,7 +6460,7 @@ fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
        let logger = test_utils::TestLogger::new();
-       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, &[], htlc_minimum_msat, TEST_FINAL_CLTV, &logger).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(), None, None, &[], htlc_minimum_msat, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6600,7 +6491,7 @@ fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
        let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], max_can_send, TEST_FINAL_CLTV, &logger).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(), None, None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6632,7 +6523,7 @@ fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
        let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
 
        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, &[], 3999999, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 3999999, TEST_FINAL_CLTV, &logger).unwrap();
 
        let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
        let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route.paths[0], &session_priv).unwrap();
@@ -6673,7 +6564,7 @@ fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6698,7 +6589,7 @@ fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
        create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6725,7 +6616,7 @@ fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6772,7 +6663,7 @@ fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
        let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
        let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
 
        check_added_monitors!(nodes[0], 1);
@@ -6806,7 +6697,7 @@ fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
@@ -6839,12 +6730,11 @@ fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment()
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
        let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
        nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
-
        let update_msg = msgs::UpdateFailMalformedHTLC{
                channel_id: chan.2,
                htlc_id: 0,
@@ -6955,7 +6845,7 @@ fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_messag
 
        let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
        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, &[], 1000000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
        check_added_monitors!(nodes[0], 1);
 
@@ -7008,7 +6898,7 @@ fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_upda
        //First hop
        let mut payment_event = {
                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, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
                nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
@@ -7075,7 +6965,8 @@ fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
        // We can have at most two valid local commitment tx, so both cases must be covered, and both txs must be checked to get them all as
        // HTLC could have been removed from lastest local commitment tx but still valid until we get remote RAA
 
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -7159,60 +7050,6 @@ fn test_failure_delay_dust_htlc_local_commitment() {
        do_test_failure_delay_dust_htlc_local_commitment(false);
 }
 
-#[test]
-fn test_no_failure_dust_htlc_local_commitment() {
-       // Transaction filters for failing back dust htlc based on local commitment txn infos has been
-       // prone to error, we test here that a dummy transaction don't fail them.
-
-       let chanmon_cfgs = create_chanmon_cfgs(2);
-       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
-       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
-       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-
-       // Rebalance a bit
-       send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
-
-       let as_dust_limit = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
-       let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
-
-       // We route 2 dust-HTLCs between A and B
-       let (preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
-       let (preimage_2, _) = route_payment(&nodes[1], &[&nodes[0]], as_dust_limit*1000);
-
-       // Build a dummy invalid transaction trying to spend a commitment tx
-       let input = TxIn {
-               previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
-               script_sig: Script::new(),
-               sequence: 0,
-               witness: Vec::new(),
-       };
-
-       let outp = TxOut {
-               script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
-               value: 10000,
-       };
-
-       let dummy_tx = Transaction {
-               version: 2,
-               lock_time: 0,
-               input: vec![input],
-               output: vec![outp]
-       };
-
-       let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-       nodes[0].chain_monitor.chain_monitor.block_connected(&header, &[(0, &dummy_tx)], 1);
-       assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
-       assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
-       // We broadcast a few more block to check everything is all right
-       connect_blocks(&nodes[0], 20, 1, true, header.block_hash());
-       assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
-       assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
-
-       claim_payment(&nodes[0], &vec!(&nodes[1])[..], preimage_1, bs_dust_limit*1000);
-       claim_payment(&nodes[1], &vec!(&nodes[0])[..], preimage_2, as_dust_limit*1000);
-}
-
 fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
        // Outbound HTLC-failure updates must be cancelled if we get a reorg before we reach ANTI_REORG_DELAY.
        // Broadcast of revoked remote commitment tx, trigger failure-update of dust/non-dust HTLCs
@@ -7331,7 +7168,7 @@ fn test_upfront_shutdown_script() {
        let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
        node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
        // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that  we disconnect peer
-       nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+       nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
     assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.").unwrap().is_match(check_closed_broadcast!(nodes[2], true).unwrap().data.as_str()));
        check_added_monitors!(nodes[2], 1);
 
@@ -7340,7 +7177,7 @@ fn test_upfront_shutdown_script() {
        nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
        let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
        // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
-       nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
+       nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        let events = nodes[2].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
        match events[0] {
@@ -7354,7 +7191,7 @@ fn test_upfront_shutdown_script() {
        nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
        let mut node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
        node_1_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
-       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_1_shutdown);
+       nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
        let events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
        match events[0] {
@@ -7368,7 +7205,7 @@ fn test_upfront_shutdown_script() {
        nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
        let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
        node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
-       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        let events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
        match events[0] {
@@ -7382,7 +7219,70 @@ fn test_upfront_shutdown_script() {
        nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
        let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
        node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
-       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
+       let events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+       match events[0] {
+               MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
+               _ => panic!("Unexpected event"),
+       }
+       match events[1] {
+               MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
+               _ => panic!("Unexpected event"),
+       }
+}
+
+#[test]
+fn test_upfront_shutdown_script_unsupport_segwit() {
+       // We test that channel is closed early
+       // if a segwit program is passed as upfront shutdown script,
+       // but the peer does not support segwit.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
+
+       let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(16)
+               .push_slice(&[0, 0])
+               .into_script());
+
+       let features = InitFeatures::known().clear_shutdown_anysegwit();
+       nodes[0].node.handle_open_channel(&nodes[0].node.get_our_node_id(), features, &open_channel);
+
+       let events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       match events[0] {
+               MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                       assert_eq!(node_id, nodes[0].node.get_our_node_id());
+                       assert!(regex::Regex::new(r"Peer is signaling upfront_shutdown but has provided a non-accepted scriptpubkey format. script: (\([A-Fa-f0-9]+\))").unwrap().is_match(&*msg.data));
+               },
+               _ => panic!("Unexpected event"),
+       }
+}
+
+#[test]
+fn test_shutdown_script_any_segwit_allowed() {
+       let mut config = UserConfig::default();
+       config.channel_options.announced_channel = true;
+       config.peer_channel_config_limits.force_announced_channel_preference = false;
+       config.channel_options.commit_upfront_shutdown_pubkey = false;
+       let user_cfgs = [None, Some(config), None];
+       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, &user_cfgs);
+       let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       //// We test if the remote peer accepts opt_shutdown_anysegwit, a witness program can be used on shutdown
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
+       nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
+       let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+       node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
+               .push_slice(&[0, 0])
+               .into_script();
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
        let events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 2);
        match events[0] {
@@ -7395,6 +7295,73 @@ fn test_upfront_shutdown_script() {
        }
 }
 
+#[test]
+fn test_shutdown_script_any_segwit_not_allowed() {
+       let mut config = UserConfig::default();
+       config.channel_options.announced_channel = true;
+       config.peer_channel_config_limits.force_announced_channel_preference = false;
+       config.channel_options.commit_upfront_shutdown_pubkey = false;
+       let user_cfgs = [None, Some(config), None];
+       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, &user_cfgs);
+       let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       //// We test that if the remote peer does not accept opt_shutdown_anysegwit, the witness program cannot be used on shutdown
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
+       nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
+       let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+       // Make an any segwit version script
+       node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
+               .push_slice(&[0, 0])
+               .into_script();
+       let flags_no = InitFeatures::known().clear_shutdown_anysegwit();
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &flags_no, &node_0_shutdown);
+       let events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+       match events[1] {
+               MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                       assert_eq!(node_id, nodes[1].node.get_our_node_id());
+                       assert_eq!(msg.data, "Got a nonstandard scriptpubkey (60020000) from remote peer".to_owned())
+               },
+               _ => panic!("Unexpected event"),
+       }
+       check_added_monitors!(nodes[0], 1);
+}
+
+#[test]
+fn test_shutdown_script_segwit_but_not_anysegwit() {
+       let mut config = UserConfig::default();
+       config.channel_options.announced_channel = true;
+       config.peer_channel_config_limits.force_announced_channel_preference = false;
+       config.channel_options.commit_upfront_shutdown_pubkey = false;
+       let user_cfgs = [None, Some(config), None];
+       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, &user_cfgs);
+       let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       //// We test that if shutdown any segwit is supported and we send a witness script with 0 version, this is not accepted
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
+       nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
+       let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+       // Make a segwit script that is not a valid as any segwit
+       node_0_shutdown.scriptpubkey = Builder::new().push_int(0)
+               .push_slice(&[0, 0])
+               .into_script();
+       nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
+       let events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+       match events[1] {
+               MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                       assert_eq!(node_id, nodes[1].node.get_our_node_id());
+                       assert_eq!(msg.data, "Got a nonstandard scriptpubkey (00020000) from remote peer".to_owned())
+               },
+               _ => panic!("Unexpected event"),
+       }
+       check_added_monitors!(nodes[0], 1);
+}
+
 #[test]
 fn test_user_configurable_csv_delay() {
        // We test our channel constructors yield errors when we pass them absurd csv delay
@@ -7410,8 +7377,7 @@ fn test_user_configurable_csv_delay() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
-       let keys_manager: Arc<KeysInterface<ChanKeySigner = EnforcingChannelKeys>> = Arc::new(test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet));
-       if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), 1000000, 1000000, 0, &low_our_to_self_config) {
+       if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), 1000000, 1000000, 0, &low_our_to_self_config) {
                match error {
                        APIError::APIMisuseError { err } => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
                        _ => panic!("Unexpected event"),
@@ -7422,7 +7388,7 @@ fn test_user_configurable_csv_delay() {
        nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
        let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
        open_channel.to_self_delay = 200;
-       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &low_our_to_self_config) {
+       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &low_our_to_self_config) {
                match error {
                        ChannelError::Close(err) => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str()));  },
                        _ => panic!("Unexpected event"),
@@ -7448,7 +7414,7 @@ fn test_user_configurable_csv_delay() {
        nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
        let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
        open_channel.to_self_delay = 200;
-       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &high_their_to_self_config) {
+       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &high_their_to_self_config) {
                match error {
                        ChannelError::Close(err) => { assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(err.as_str())); },
                        _ => panic!("Unexpected event"),
@@ -7460,16 +7426,22 @@ fn test_user_configurable_csv_delay() {
 fn test_data_loss_protect() {
        // We want to be sure that :
        // * we don't broadcast our Local Commitment Tx in case of fallen behind
+       //   (but this is not quite true - we broadcast during Drop because chanmon is out of sync with chanmgr)
        // * we close channel in case of detecting other being fallen behind
        // * we are able to claim our own outputs thanks to to_remote being static
-       let keys_manager;
+       // TODO: this test is incomplete and the data_loss_protect implementation is incomplete - see issue #775
+       let persister;
        let logger;
        let fee_estimator;
        let tx_broadcaster;
        let chain_source;
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       // We broadcast during Drop because chanmon is out of sync with chanmgr, which would cause a panic
+       // during signing due to revoked tx
+       chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
+       let keys_manager = &chanmon_cfgs[0].keys_manager;
        let monitor;
        let node_state_0;
-       let chanmon_cfgs = create_chanmon_cfgs(2);
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -7479,7 +7451,7 @@ fn test_data_loss_protect() {
        // Cache node A state before any channel update
        let previous_node_state = nodes[0].node.encode();
        let mut previous_chain_monitor_state = test_utils::TestVecWriter(Vec::new());
-       nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut previous_chain_monitor_state).unwrap();
+       nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut previous_chain_monitor_state).unwrap();
 
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
@@ -7489,17 +7461,17 @@ fn test_data_loss_protect() {
 
        // Restore node A from previous state
        logger = test_utils::TestLogger::with_id(format!("node {}", 0));
-       let mut chain_monitor = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut ::std::io::Cursor::new(previous_chain_monitor_state.0)).unwrap().1;
+       let mut chain_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut ::std::io::Cursor::new(previous_chain_monitor_state.0), keys_manager).unwrap().1;
        chain_source = test_utils::TestChainSource::new(Network::Testnet);
        tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())};
        fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
-       keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
-       monitor = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &fee_estimator);
+       persister = test_utils::TestPersister::new();
+       monitor = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &fee_estimator, &persister, keys_manager);
        node_state_0 = {
                let mut channel_monitors = HashMap::new();
                channel_monitors.insert(OutPoint { txid: chan.3.txid(), index: 0 }, &mut chain_monitor);
-               <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut ::std::io::Cursor::new(previous_node_state), ChannelManagerReadArgs {
-                       keys_manager: &keys_manager,
+               <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut ::std::io::Cursor::new(previous_node_state), ChannelManagerReadArgs {
+                       keys_manager: keys_manager,
                        fee_estimator: &fee_estimator,
                        chain_monitor: &monitor,
                        logger: &logger,
@@ -7561,7 +7533,7 @@ fn test_data_loss_protect() {
        let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
        connect_block(&nodes[0], &Block { header, txdata: vec![node_txn[0].clone()]}, 0);
        connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 0, true, header.block_hash());
-       let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
+       let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 1000000);
        assert_eq!(spend_txn.len(), 1);
        check_spends!(spend_txn[0], node_txn[0]);
 }
@@ -7690,7 +7662,7 @@ fn test_bump_penalty_txn_on_revoked_commitment() {
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).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, &Vec::new(), 3000000, 30, &logger).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(), None, None, &Vec::new(), 3000000, 30, &logger).unwrap();
        send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
 
        let revoked_txn = get_local_commitment_txn!(nodes[0], chan.2);
@@ -7786,7 +7758,8 @@ fn test_bump_penalty_txn_on_revoked_htlcs() {
        // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to sure
        // we're able to claim outputs on revoked HTLC transactions before timelocks expiration
 
-       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let mut chanmon_cfgs = create_chanmon_cfgs(2);
+       chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
@@ -8053,110 +8026,13 @@ fn test_bump_penalty_txn_on_remote_commitment() {
        nodes[1].node.get_and_clear_pending_msg_events();
 }
 
-#[test]
-fn test_set_outpoints_partial_claiming() {
-       // - remote party claim tx, new bump tx
-       // - disconnect remote claiming tx, new bump
-       // - disconnect tx, see no tx anymore
-       let chanmon_cfgs = create_chanmon_cfgs(2);
-       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
-       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
-       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
-       let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
-       let payment_preimage_2 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
-
-       // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
-       let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
-       assert_eq!(remote_txn.len(), 3);
-       assert_eq!(remote_txn[0].output.len(), 4);
-       assert_eq!(remote_txn[0].input.len(), 1);
-       assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
-       check_spends!(remote_txn[1], remote_txn[0]);
-       check_spends!(remote_txn[2], remote_txn[0]);
-
-       // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
-       let prev_header_100 = connect_blocks(&nodes[1], 100, 0, false, Default::default());
-       // Provide node A with both preimage
-       nodes[0].node.claim_funds(payment_preimage_1, &None, 3_000_000);
-       nodes[0].node.claim_funds(payment_preimage_2, &None, 3_000_000);
-       check_added_monitors!(nodes[0], 2);
-       nodes[0].node.get_and_clear_pending_events();
-       nodes[0].node.get_and_clear_pending_msg_events();
-
-       // Connect blocks on node A commitment transaction
-       let header = BlockHeader { version: 0x20000000, prev_blockhash: prev_header_100, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-       connect_block(&nodes[0], &Block { header, txdata: vec![remote_txn[0].clone()] }, 101);
-       check_closed_broadcast!(nodes[0], false);
-       check_added_monitors!(nodes[0], 1);
-       // Verify node A broadcast tx claiming both HTLCs
-       {
-               let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-Success*2
-               assert_eq!(node_txn.len(), 4);
-               check_spends!(node_txn[0], remote_txn[0]);
-               check_spends!(node_txn[1], chan.3);
-               check_spends!(node_txn[2], node_txn[1]);
-               check_spends!(node_txn[3], node_txn[1]);
-               assert_eq!(node_txn[0].input.len(), 2);
-               node_txn.clear();
-       }
-
-       // Connect blocks on node B
-       connect_blocks(&nodes[1], 135, 0, false, Default::default());
-       check_closed_broadcast!(nodes[1], false);
-       check_added_monitors!(nodes[1], 1);
-       // Verify node B broadcast 2 HTLC-timeout txn
-       let partial_claim_tx = {
-               let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               assert_eq!(node_txn.len(), 3);
-               check_spends!(node_txn[1], node_txn[0]);
-               check_spends!(node_txn[2], node_txn[0]);
-               assert_eq!(node_txn[1].input.len(), 1);
-               assert_eq!(node_txn[2].input.len(), 1);
-               node_txn[1].clone()
-       };
-
-       // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
-       let header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
-       connect_block(&nodes[0], &Block { header, txdata: vec![partial_claim_tx.clone()] }, 102);
-       {
-               let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               assert_eq!(node_txn.len(), 1);
-               check_spends!(node_txn[0], remote_txn[0]);
-               assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
-               node_txn.clear();
-       }
-       nodes[0].node.get_and_clear_pending_msg_events();
-
-       // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
-       disconnect_block(&nodes[0], &header, 102);
-       {
-               let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               assert_eq!(node_txn.len(), 1);
-               check_spends!(node_txn[0], remote_txn[0]);
-               assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
-               node_txn.clear();
-       }
-
-       //// Disconnect one more block and then reconnect multiple no transaction should be generated
-       disconnect_block(&nodes[0], &header, 101);
-       connect_blocks(&nodes[1], 15, 101, false, prev_header_100);
-       {
-               let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
-               assert_eq!(node_txn.len(), 0);
-               node_txn.clear();
-       }
-}
-
 #[test]
 fn test_counterparty_raa_skip_no_crash() {
        // Previously, if our counterparty sent two RAAs in a row without us having provided a
        // commitment transaction, we would have happily carried on and provided them the next
        // commitment transaction based on one RAA forward. This would probably eventually have led to
        // channel closure, but it would not have resulted in funds loss. Still, our
-       // EnforcingChannelKeys would have paniced as it doesn't like jumps into the future. Here, we
+       // EnforcingSigner would have paniced as it doesn't like jumps into the future. Here, we
        // check simply that the channel is closed in response to such an RAA, but don't check whether
        // we decide to punish our counterparty for revoking their funds (as we don't currently
        // implement that).
@@ -8167,11 +8043,13 @@ fn test_counterparty_raa_skip_no_crash() {
        let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
 
        let mut guard = nodes[0].node.channel_state.lock().unwrap();
-       let keys = &guard.by_id.get_mut(&channel_id).unwrap().holder_keys;
+       let keys = &guard.by_id.get_mut(&channel_id).unwrap().get_signer();
        const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
+       let per_commitment_secret = keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER);
+       // Must revoke without gaps
+       keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 1);
        let next_per_commitment_point = PublicKey::from_secret_key(&Secp256k1::new(),
                &SecretKey::from_slice(&keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2)).unwrap());
-       let per_commitment_secret = keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER);
 
        nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(),
                &msgs::RevokeAndACK { channel_id, per_commitment_secret, next_per_commitment_point });
@@ -8223,10 +8101,10 @@ fn test_bump_txn_sanitize_tracking_maps() {
        connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn }, 130);
        connect_blocks(&nodes[0], 5, 130,  false, header_130.block_hash());
        {
-               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
+               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
                if let Some(monitor) = monitors.get(&OutPoint { txid: chan.3.txid(), index: 0 }) {
-                       assert!(monitor.onchain_tx_handler.pending_claim_requests.is_empty());
-                       assert!(monitor.onchain_tx_handler.claimable_outpoints.is_empty());
+                       assert!(monitor.inner.lock().unwrap().onchain_tx_handler.pending_claim_requests.is_empty());
+                       assert!(monitor.inner.lock().unwrap().onchain_tx_handler.claimable_outpoints.is_empty());
                }
        }
 }
@@ -8284,7 +8162,7 @@ fn test_simple_payment_secret() {
        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
        let payment_secret = PaymentSecret([0xdb; 32]);
        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, &[], 100000, TEST_FINAL_CLTV, &logger).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(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2]]], 100000, payment_hash, Some(payment_secret.clone()));
        // Claiming with all the correct values but the wrong secret should result in nothing...
        assert_eq!(nodes[2].node.claim_funds(payment_preimage, &None, 100_000), false);
@@ -8310,7 +8188,7 @@ fn test_simple_mpp() {
        let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
        let payment_secret = PaymentSecret([0xdb; 32]);
        let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+       let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), None, None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
        let path = route.paths[0].clone();
        route.paths.push(path);
        route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
@@ -8355,15 +8233,16 @@ fn test_update_err_monitor_lockdown() {
        // Copy ChainMonitor to simulate a watchtower and update block height of node 0 until its ChannelMonitor timeout HTLC onchain
        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 watchtower = {
-               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
+               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
                let monitor = monitors.get(&outpoint).unwrap();
                let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write_for_disk(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
-                               &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
+               monitor.write(&mut w).unwrap();
+               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                               &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
                assert!(new_monitor == *monitor);
-               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
+               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
                assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
                watchtower
        };
@@ -8413,15 +8292,16 @@ fn test_concurrent_monitor_claim() {
        // Copy ChainMonitor to simulate watchtower Alice and update block height her ChannelMonitor timeout HTLC onchain
        let chain_source = test_utils::TestChainSource::new(Network::Testnet);
        let logger = test_utils::TestLogger::with_id(format!("node {}", "Alice"));
+       let persister = test_utils::TestPersister::new();
        let watchtower_alice = {
-               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
+               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
                let monitor = monitors.get(&outpoint).unwrap();
                let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write_for_disk(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
-                               &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
+               monitor.write(&mut w).unwrap();
+               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                               &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
                assert!(new_monitor == *monitor);
-               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
+               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
                assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
                watchtower
        };
@@ -8438,15 +8318,16 @@ fn test_concurrent_monitor_claim() {
        // Copy ChainMonitor to simulate watchtower Bob and make it receive a commitment update first.
        let chain_source = test_utils::TestChainSource::new(Network::Testnet);
        let logger = test_utils::TestLogger::with_id(format!("node {}", "Bob"));
+       let persister = test_utils::TestPersister::new();
        let watchtower_bob = {
-               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
+               let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
                let monitor = monitors.get(&outpoint).unwrap();
                let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write_for_disk(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
-                               &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
+               monitor.write(&mut w).unwrap();
+               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                               &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
                assert!(new_monitor == *monitor);
-               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
+               let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
                assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
                watchtower
        };
@@ -8457,7 +8338,7 @@ fn test_concurrent_monitor_claim() {
        let (_, payment_hash) = 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, &Vec::new(), 3000000 , TEST_FINAL_CLTV, &logger).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(), None, None, &Vec::new(), 3000000 , TEST_FINAL_CLTV, &logger).unwrap();
                nodes[1].node.send_payment(&route, payment_hash, &None).unwrap();
        }
        check_added_monitors!(nodes[1], 1);
@@ -8499,3 +8380,474 @@ fn test_concurrent_monitor_claim() {
                check_spends!(htlc_txn[1], bob_state_y);
        }
 }
+
+#[test]
+fn test_pre_lockin_no_chan_closed_update() {
+       // Test that if a peer closes a channel in response to a funding_created message we don't
+       // generate a channel update (as the channel cannot appear on chain without a funding_signed
+       // message).
+       //
+       // Doing so would imply a channel monitor update before the initial channel monitor
+       // registration, violating our API guarantees.
+       //
+       // Previously, full_stack_target managed to hit this case by opening then closing a channel,
+       // then opening a second channel with the same funding output as the first (which is not
+       // rejected because the first channel does not exist in the ChannelManager) and closing it
+       // before receiving funding_signed.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       // Create an initial channel
+       nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
+       let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
+       let accept_chan_msg = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_chan_msg);
+
+       // Move the first channel through the funding flow...
+       let (temporary_channel_id, _tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
+
+       nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_output);
+       check_added_monitors!(nodes[0], 0);
+
+       let funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
+       let channel_id = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index }.to_channel_id();
+       nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id, data: "Hi".to_owned() });
+       assert!(nodes[0].chain_monitor.added_monitors.lock().unwrap().is_empty());
+}
+
+#[test]
+fn test_htlc_no_detection() {
+       // This test is a mutation to underscore the detection logic bug we had
+       // before #653. HTLC value routed is above the remaining balance, thus
+       // inverting HTLC and `to_remote` output. HTLC will come second and
+       // it wouldn't be seen by pre-#653 detection as we were enumerate()'ing
+       // on a watched outputs vector (Vec<TxOut>) thus implicitly relying on
+       // outputs order detection for correct spending children filtring.
+
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       // Create some initial channels
+       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+       send_payment(&nodes[0], &vec!(&nodes[1])[..], 1_000_000, 1_000_000);
+       let (_, our_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 2_000_000);
+       let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
+       assert_eq!(local_txn[0].input.len(), 1);
+       assert_eq!(local_txn[0].output.len(), 3);
+       check_spends!(local_txn[0], chan_1.3);
+
+       // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
+       let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
+       connect_block(&nodes[0], &Block { header, txdata: vec![local_txn[0].clone()] }, 200);
+       // We deliberately connect the local tx twice as this should provoke a failure calling
+       // this test before #653 fix.
+       connect_block(&nodes[0], &Block { header, txdata: vec![local_txn[0].clone()] }, 200);
+       check_closed_broadcast!(nodes[0], false);
+       check_added_monitors!(nodes[0], 1);
+
+       let htlc_timeout = {
+               let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               assert_eq!(node_txn[0].input.len(), 1);
+               assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
+               check_spends!(node_txn[0], local_txn[0]);
+               node_txn[0].clone()
+       };
+
+       let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
+       connect_block(&nodes[0], &Block { header: header_201, txdata: vec![htlc_timeout.clone()] }, 201);
+       connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 201, true, header_201.block_hash());
+       expect_payment_failed!(nodes[0], our_payment_hash, true);
+}
+
+fn do_test_onchain_htlc_settlement_after_close(broadcast_alice: bool, go_onchain_before_fulfill: bool) {
+       // If we route an HTLC, then learn the HTLC's preimage after the upstream channel has been
+       // force-closed, we must claim that HTLC on-chain. (Given an HTLC forwarded from Alice --> Bob -->
+       // Carol, Alice would be the upstream node, and Carol the downstream.)
+       //
+       // Steps of the test:
+       // 1) Alice sends a HTLC to Carol through Bob.
+       // 2) Carol doesn't settle the HTLC.
+       // 3) If broadcast_alice is true, Alice force-closes her channel with Bob. Else Bob force closes.
+       // Steps 4 and 5 may be reordered depending on go_onchain_before_fulfill.
+       // 4) Bob sees the Alice's commitment on his chain or vice versa. An offered output is present
+       //    but can't be claimed as Bob doesn't have yet knowledge of the preimage.
+       // 5) Carol release the preimage to Bob off-chain.
+       // 6) Bob claims the offered output on the broadcasted commitment.
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+       let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       // Create some initial channels
+       let chan_ab = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+       create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+       // Steps (1) and (2):
+       // Send an HTLC Alice --> Bob --> Carol, but Carol doesn't settle the HTLC back.
+       let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3_000_000);
+
+       // Check that Alice's commitment transaction now contains an output for this HTLC.
+       let alice_txn = get_local_commitment_txn!(nodes[0], chan_ab.2);
+       check_spends!(alice_txn[0], chan_ab.3);
+       assert_eq!(alice_txn[0].output.len(), 2);
+       check_spends!(alice_txn[1], alice_txn[0]); // 2nd transaction is a non-final HTLC-timeout
+       assert_eq!(alice_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
+       assert_eq!(alice_txn.len(), 2);
+
+       // Steps (3) and (4):
+       // If `go_onchain_before_fufill`, broadcast the relevant commitment transaction and check that Bob
+       // responds by (1) broadcasting a channel update and (2) adding a new ChannelMonitor.
+       let mut force_closing_node = 0; // Alice force-closes
+       if !broadcast_alice { force_closing_node = 1; } // Bob force-closes
+       nodes[force_closing_node].node.force_close_channel(&chan_ab.2).unwrap();
+       check_closed_broadcast!(nodes[force_closing_node], false);
+       check_added_monitors!(nodes[force_closing_node], 1);
+       if go_onchain_before_fulfill {
+               let txn_to_broadcast = match broadcast_alice {
+                       true => alice_txn.clone(),
+                       false => get_local_commitment_txn!(nodes[1], chan_ab.2)
+               };
+               let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
+               connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]}, 1);
+               let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               if broadcast_alice {
+                       check_closed_broadcast!(nodes[1], false);
+                       check_added_monitors!(nodes[1], 1);
+               }
+               assert_eq!(bob_txn.len(), 1);
+               check_spends!(bob_txn[0], chan_ab.3);
+       }
+
+       // Step (5):
+       // Carol then claims the funds and sends an update_fulfill message to Bob, and they go through the
+       // process of removing the HTLC from their commitment transactions.
+       assert!(nodes[2].node.claim_funds(payment_preimage, &None, 3_000_000));
+       check_added_monitors!(nodes[2], 1);
+       let carol_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
+       assert!(carol_updates.update_add_htlcs.is_empty());
+       assert!(carol_updates.update_fail_htlcs.is_empty());
+       assert!(carol_updates.update_fail_malformed_htlcs.is_empty());
+       assert!(carol_updates.update_fee.is_none());
+       assert_eq!(carol_updates.update_fulfill_htlcs.len(), 1);
+
+       nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &carol_updates.update_fulfill_htlcs[0]);
+       // If Alice broadcasted but Bob doesn't know yet, here he prepares to tell her about the preimage.
+       if !go_onchain_before_fulfill && broadcast_alice {
+               let events = nodes[1].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
+                               assert_eq!(*node_id, nodes[0].node.get_our_node_id());
+                       },
+                       _ => panic!("Unexpected event"),
+               };
+       }
+       nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &carol_updates.commitment_signed);
+       // One monitor update for the preimage to update the Bob<->Alice channel, one monitor update
+       // Carol<->Bob's updated commitment transaction info.
+       check_added_monitors!(nodes[1], 2);
+
+       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+       let bob_revocation = match events[0] {
+               MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
+                       assert_eq!(*node_id, nodes[2].node.get_our_node_id());
+                       (*msg).clone()
+               },
+               _ => panic!("Unexpected event"),
+       };
+       let bob_updates = match events[1] {
+               MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
+                       assert_eq!(*node_id, nodes[2].node.get_our_node_id());
+                       (*updates).clone()
+               },
+               _ => panic!("Unexpected event"),
+       };
+
+       nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bob_revocation);
+       check_added_monitors!(nodes[2], 1);
+       nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bob_updates.commitment_signed);
+       check_added_monitors!(nodes[2], 1);
+
+       let events = nodes[2].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       let carol_revocation = match events[0] {
+               MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
+                       assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+                       (*msg).clone()
+               },
+               _ => panic!("Unexpected event"),
+       };
+       nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &carol_revocation);
+       check_added_monitors!(nodes[1], 1);
+
+       // If this test requires the force-closed channel to not be on-chain until after the fulfill,
+       // here's where we put said channel's commitment tx on-chain.
+       let mut txn_to_broadcast = alice_txn.clone();
+       if !broadcast_alice { txn_to_broadcast = get_local_commitment_txn!(nodes[1], chan_ab.2); }
+       if !go_onchain_before_fulfill {
+               let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
+               connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]}, 1);
+               // If Bob was the one to force-close, he will have already passed these checks earlier.
+               if broadcast_alice {
+                       check_closed_broadcast!(nodes[1], false);
+                       check_added_monitors!(nodes[1], 1);
+               }
+               let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               if broadcast_alice {
+                       // In `connect_block()`, the ChainMonitor and ChannelManager are separately notified about a
+                       // new block being connected. The ChannelManager being notified triggers a monitor update,
+                       // which triggers broadcasting our commitment tx and an HTLC-claiming tx. The ChainMonitor
+                       // being notified triggers the HTLC-claiming tx redundantly, resulting in 3 total txs being
+                       // broadcasted.
+                       assert_eq!(bob_txn.len(), 3);
+                       check_spends!(bob_txn[1], chan_ab.3);
+               } else {
+                       assert_eq!(bob_txn.len(), 2);
+                       check_spends!(bob_txn[0], chan_ab.3);
+               }
+       }
+
+       // Step (6):
+       // Finally, check that Bob broadcasted a preimage-claiming transaction for the HTLC output on the
+       // broadcasted commitment transaction.
+       {
+               let bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
+               if go_onchain_before_fulfill {
+                       // Bob should now have an extra broadcasted tx, for the preimage-claiming transaction.
+                       assert_eq!(bob_txn.len(), 2);
+               }
+               let script_weight = match broadcast_alice {
+                       true => OFFERED_HTLC_SCRIPT_WEIGHT,
+                       false => ACCEPTED_HTLC_SCRIPT_WEIGHT
+               };
+               // If Alice force-closed and Bob didn't receive her commitment transaction until after he
+               // received Carol's fulfill, he broadcasts the HTLC-output-claiming transaction first. Else if
+               // Bob force closed or if he found out about Alice's commitment tx before receiving Carol's
+               // fulfill, then he broadcasts the HTLC-output-claiming transaction second.
+               if broadcast_alice && !go_onchain_before_fulfill {
+                       check_spends!(bob_txn[0], txn_to_broadcast[0]);
+                       assert_eq!(bob_txn[0].input[0].witness.last().unwrap().len(), script_weight);
+               } else {
+                       check_spends!(bob_txn[1], txn_to_broadcast[0]);
+                       assert_eq!(bob_txn[1].input[0].witness.last().unwrap().len(), script_weight);
+               }
+       }
+}
+
+#[test]
+fn test_onchain_htlc_settlement_after_close() {
+       do_test_onchain_htlc_settlement_after_close(true, true);
+       do_test_onchain_htlc_settlement_after_close(false, true); // Technically redundant, but may as well
+       do_test_onchain_htlc_settlement_after_close(true, false);
+       do_test_onchain_htlc_settlement_after_close(false, false);
+}
+
+#[test]
+fn test_duplicate_chan_id() {
+       // Test that if a given peer tries to open a channel with the same channel_id as one that is
+       // already open we reject it and keep the old channel.
+       //
+       // Previously, full_stack_target managed to figure out that if you tried to open two channels
+       // with the same funding output (ie post-funding channel_id), we'd create a monitor update for
+       // the existing channel when we detect the duplicate new channel, screwing up our monitor
+       // updating logic for the existing channel.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       // Create an initial channel
+       nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
+       let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
+
+       // Try to create a second channel with the same temporary_channel_id as the first and check
+       // that it is rejected.
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
+       {
+               let events = nodes[1].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                               // Technically, at this point, nodes[1] would be justified in thinking both the
+                               // first (valid) and second (invalid) channels are closed, given they both have
+                               // the same non-temporary channel_id. However, currently we do not, so we just
+                               // move forward with it.
+                               assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
+                               assert_eq!(node_id, nodes[0].node.get_our_node_id());
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+
+       // Move the first channel through the funding flow...
+       let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
+
+       nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_output);
+       check_added_monitors!(nodes[0], 0);
+
+       let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
+       {
+               let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
+               assert_eq!(added_monitors.len(), 1);
+               assert_eq!(added_monitors[0].0, funding_output);
+               added_monitors.clear();
+       }
+       let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
+
+       let funding_outpoint = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index };
+       let channel_id = funding_outpoint.to_channel_id();
+
+       // Now we have the first channel past funding_created (ie it has a txid-based channel_id, not a
+       // temporary one).
+
+       // First try to open a second channel with a temporary channel id equal to the txid-based one.
+       // Technically this is allowed by the spec, but we don't support it and there's little reason
+       // to. Still, it shouldn't cause any other issues.
+       open_chan_msg.temporary_channel_id = channel_id;
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
+       {
+               let events = nodes[1].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                               // Technically, at this point, nodes[1] would be justified in thinking both
+                               // channels are closed, but currently we do not, so we just move forward with it.
+                               assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
+                               assert_eq!(node_id, nodes[0].node.get_our_node_id());
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+
+       // Now try to create a second channel which has a duplicate funding output.
+       nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
+       let open_chan_2_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_2_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
+       create_funding_transaction(&nodes[0], 100000, 42); // Get and check the FundingGenerationReady event
+
+       let funding_created = {
+               let mut a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let mut as_chan = a_channel_lock.by_id.get_mut(&open_chan_2_msg.temporary_channel_id).unwrap();
+               let logger = test_utils::TestLogger::new();
+               as_chan.get_outbound_funding_created(funding_outpoint, &&logger).unwrap()
+       };
+       check_added_monitors!(nodes[0], 0);
+       nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
+       // At this point we'll try to add a duplicate channel monitor, which will be rejected, but
+       // still needs to be cleared here.
+       check_added_monitors!(nodes[1], 1);
+
+       // ...still, nodes[1] will reject the duplicate channel.
+       {
+               let events = nodes[1].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match events[0] {
+                       MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
+                               // Technically, at this point, nodes[1] would be justified in thinking both
+                               // channels are closed, but currently we do not, so we just move forward with it.
+                               assert_eq!(msg.channel_id, channel_id);
+                               assert_eq!(node_id, nodes[0].node.get_our_node_id());
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+
+       // finally, finish creating the original channel and send a payment over it to make sure
+       // everything is functional.
+       nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
+       {
+               let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
+               assert_eq!(added_monitors.len(), 1);
+               assert_eq!(added_monitors[0].0, funding_output);
+               added_monitors.clear();
+       }
+
+       let events_4 = nodes[0].node.get_and_clear_pending_events();
+       assert_eq!(events_4.len(), 1);
+       match events_4[0] {
+               Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
+                       assert_eq!(user_channel_id, 42);
+                       assert_eq!(*funding_txo, funding_output);
+               },
+               _ => panic!("Unexpected event"),
+       };
+
+       let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
+       let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
+       update_nodes_with_chan_announce(&nodes, 0, 1, &announcement, &as_update, &bs_update);
+       send_payment(&nodes[0], &[&nodes[1]], 8000000, 8_000_000);
+}
+
+#[test]
+fn test_error_chans_closed() {
+       // Test that we properly handle error messages, closing appropriate channels.
+       //
+       // Prior to #787 we'd allow a peer to make us force-close a channel we had with a different
+       // peer. The "real" fix for that is to index channels with peers_ids, however in the mean time
+       // we can test various edge cases around it to ensure we don't regress.
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+       let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       // Create some initial channels
+       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+       let chan_3 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
+       assert_eq!(nodes[1].node.list_usable_channels().len(), 2);
+       assert_eq!(nodes[2].node.list_usable_channels().len(), 1);
+
+       // Closing a channel from a different peer has no effect
+       nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_3.2, data: "ERR".to_owned() });
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
+
+       // Closing one channel doesn't impact others
+       nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_2.2, data: "ERR".to_owned() });
+       check_added_monitors!(nodes[0], 1);
+       check_closed_broadcast!(nodes[0], false);
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 2);
+       assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_1.2 || nodes[0].node.list_usable_channels()[1].channel_id == chan_1.2);
+       assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2 || nodes[0].node.list_usable_channels()[1].channel_id == chan_3.2);
+
+       // A null channel ID should close all channels
+       let _chan_4 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+       nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: [0; 32], data: "ERR".to_owned() });
+       check_added_monitors!(nodes[0], 2);
+       let events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+       match events[0] {
+               MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+                       assert_eq!(msg.contents.flags & 2, 2);
+               },
+               _ => panic!("Unexpected event"),
+       }
+       match events[1] {
+               MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+                       assert_eq!(msg.contents.flags & 2, 2);
+               },
+               _ => panic!("Unexpected event"),
+       }
+       // Note that at this point users of a standard PeerHandler will end up calling
+       // peer_disconnected with no_connection_possible set to false, duplicating the
+       // close-all-channels logic. That's OK, we don't want to end up not force-closing channels for
+       // users with their own peer handling logic. We duplicate the call here, however.
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
+       assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
+
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), true);
+       assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
+       assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
+}