Merge pull request #2006 from TheBlueMatt/2023-02-no-recursive-read-locks
[rust-lightning] / lightning / src / ln / functional_tests.rs
index 7b06aac8f208bb2d19c8258337138ad8a77b99be..454fbe2b7819889e3246314a90ac82eed17f40f9 100644 (file)
@@ -17,7 +17,7 @@ use crate::chain::chaininterface::LowerBoundedFeeEstimator;
 use crate::chain::channelmonitor;
 use crate::chain::channelmonitor::{CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
 use crate::chain::transaction::OutPoint;
-use crate::chain::keysinterface::{BaseSign, EntropySource, KeysInterface};
+use crate::chain::keysinterface::{ChannelSigner, EcdsaChannelSigner, EntropySource};
 use crate::ln::{PaymentPreimage, PaymentSecret, PaymentHash};
 use crate::ln::channel::{commitment_tx_base_weight, COMMITMENT_TX_WEIGHT_PER_HTLC, CONCURRENT_INBOUND_HTLC_FEE_BUFFER, FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE, MIN_AFFORDABLE_HTLC_COUNT};
 use crate::ln::channelmanager::{self, PaymentId, RAACommitmentOrder, PaymentSendFailure, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA};
@@ -31,7 +31,7 @@ use crate::ln::msgs;
 use crate::ln::msgs::{ChannelMessageHandler, RoutingMessageHandler, ErrorAction};
 use crate::util::enforcing_trait_impls::EnforcingSigner;
 use crate::util::test_utils;
-use crate::util::events::{Event, MessageSendEvent, MessageSendEventsProvider, PaymentPurpose, ClosureReason, HTLCDestination};
+use crate::util::events::{Event, MessageSendEvent, MessageSendEventsProvider, PathFailure, PaymentPurpose, ClosureReason, HTLCDestination};
 use crate::util::errors::APIError;
 use crate::util::ser::{Writeable, ReadableArgs};
 use crate::util::config::UserConfig;
@@ -56,7 +56,7 @@ use alloc::collections::BTreeSet;
 use core::default::Default;
 use core::iter::repeat;
 use bitcoin::hashes::Hash;
-use crate::sync::Mutex;
+use crate::sync::{Arc, Mutex};
 
 use crate::ln::functional_test_utils::*;
 use crate::ln::chan_utils::CommitmentTransaction;
@@ -87,7 +87,7 @@ fn test_insane_channel_opens() {
        // Test helper that asserts we get the correct error string given a mutator
        // that supposedly makes the channel open message insane
        let insane_open_helper = |expected_error_str: &str, message_mutator: fn(msgs::OpenChannel) -> msgs::OpenChannel| {
-               nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &message_mutator(open_channel_message.clone()));
+               nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &message_mutator(open_channel_message.clone()));
                let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
                assert_eq!(msg_events.len(), 1);
                let expected_regex = regex::Regex::new(expected_error_str).unwrap();
@@ -129,7 +129,7 @@ fn test_funding_exceeds_no_wumbo_limit() {
        use crate::ln::channel::MAX_FUNDING_SATOSHIS_NO_WUMBO;
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let mut node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
-       node_cfgs[1].features = channelmanager::provided_init_features().clear_wumbo();
+       *node_cfgs[1].override_init_features.borrow_mut() = Some(channelmanager::provided_init_features(&test_default_channel_config()).clear_wumbo());
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
@@ -165,7 +165,7 @@ fn do_test_counterparty_no_reserve(send_from_initiator: bool) {
                open_channel_message.channel_reserve_satoshis = 0;
                open_channel_message.max_htlc_value_in_flight_msat = 100_000_000;
        }
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &open_channel_message);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel_message);
 
        // Extract the channel accept message from node1 to node0
        let mut accept_channel_message = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
@@ -173,10 +173,13 @@ fn do_test_counterparty_no_reserve(send_from_initiator: bool) {
                accept_channel_message.channel_reserve_satoshis = 0;
                accept_channel_message.max_htlc_value_in_flight_msat = 100_000_000;
        }
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &accept_channel_message);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel_message);
        {
-               let mut lock;
-               let mut chan = get_channel_ref!(if send_from_initiator { &nodes[1] } else { &nodes[0] }, lock, temp_channel_id);
+               let sender_node = if send_from_initiator { &nodes[1] } else { &nodes[0] };
+               let counterparty_node = if send_from_initiator { &nodes[0] } else { &nodes[1] };
+               let mut sender_node_per_peer_lock;
+               let mut sender_node_peer_state_lock;
+               let mut chan = get_channel_ref!(sender_node, counterparty_node, sender_node_per_peer_lock, sender_node_peer_state_lock, temp_channel_id);
                chan.holder_selected_channel_reserve_satoshis = 0;
                chan.holder_max_htlc_value_in_flight_msat = 100_000_000;
        }
@@ -210,7 +213,7 @@ fn test_async_inbound_update_fee() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // balancing
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
@@ -326,7 +329,7 @@ fn test_update_fee_unordered_raa() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // balancing
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
@@ -382,7 +385,7 @@ fn test_multi_flight_update_fee() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // A                                        B
        // update_fee/commitment_signed          ->
@@ -516,11 +519,11 @@ fn do_test_sanity_on_in_flight_opens(steps: u8) {
        let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
 
        if steps & 0x0f == 1 { return; }
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &open_channel);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
        let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
 
        if steps & 0x0f == 2 { return; }
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &accept_channel);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
 
        let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
 
@@ -589,7 +592,7 @@ fn test_update_fee_vanilla() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        {
                let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
@@ -634,7 +637,7 @@ fn test_update_fee_that_funder_cannot_afford() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
        let channel_value = 5000;
        let push_sats = 700;
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, push_sats * 1000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, push_sats * 1000);
        let channel_id = chan.2;
        let secp_ctx = Secp256k1::new();
        let default_config = UserConfig::default();
@@ -686,16 +689,18 @@ fn test_update_fee_that_funder_cannot_afford() {
        // 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_funding) = {
-               let chan_lock = nodes[0].node.channel_state.lock().unwrap();
-               let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let local_chan = chan_lock.channel_by_id.get(&chan.2).unwrap();
                let chan_signer = local_chan.get_signer();
                let pubkeys = chan_signer.pubkeys();
                (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint,
                 pubkeys.funding_pubkey)
        };
        let (remote_delayed_payment_basepoint, remote_htlc_basepoint,remote_point, remote_funding) = {
-               let chan_lock = nodes[1].node.channel_state.lock().unwrap();
-               let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
+               let per_peer_state = nodes[1].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[0].node.get_our_node_id()).unwrap().lock().unwrap();
+               let remote_chan = chan_lock.channel_by_id.get(&chan.2).unwrap();
                let chan_signer = remote_chan.get_signer();
                let pubkeys = chan_signer.pubkeys();
                (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint,
@@ -708,8 +713,9 @@ fn test_update_fee_that_funder_cannot_afford() {
                &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint);
 
        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 per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let local_chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let local_chan = local_chan_lock.channel_by_id.get(&chan.2).unwrap();
                let local_chan_signer = local_chan.get_signer();
                let mut htlcs: Vec<(HTLCOutputInCommitment, ())> = vec![];
                let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
@@ -754,7 +760,7 @@ fn test_update_fee_with_fundee_update_add_htlc() {
        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(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // balancing
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
@@ -853,7 +859,7 @@ fn test_update_fee() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
        let channel_id = chan.2;
 
        // A                                        B
@@ -954,8 +960,8 @@ fn test_update_fee() {
        check_added_monitors!(nodes[1], 1);
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 
-       assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
-       assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
+       assert_eq!(get_feerate!(nodes[0], nodes[1], channel_id), feerate + 30);
+       assert_eq!(get_feerate!(nodes[1], nodes[0], channel_id), feerate + 30);
        close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
        check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
        check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
@@ -971,9 +977,9 @@ fn fake_network_test() {
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+       let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
 
        // Rebalance the network a bit by relaying one payment through all the channels...
        send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
@@ -991,7 +997,7 @@ fn fake_network_test() {
        fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
 
        // Add a new channel that skips 3
-       let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3);
 
        send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000);
        send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000);
@@ -1021,9 +1027,9 @@ fn fake_network_test() {
        });
        hops.push(RouteHop {
                pubkey: nodes[1].node.get_our_node_id(),
-               node_features: channelmanager::provided_node_features(),
+               node_features: nodes[1].node.node_features(),
                short_channel_id: chan_4.0.contents.short_channel_id,
-               channel_features: channelmanager::provided_channel_features(),
+               channel_features: nodes[1].node.channel_features(),
                fee_msat: 1000000,
                cltv_expiry_delta: TEST_FINAL_CLTV,
        });
@@ -1050,9 +1056,9 @@ fn fake_network_test() {
        });
        hops.push(RouteHop {
                pubkey: nodes[1].node.get_our_node_id(),
-               node_features: channelmanager::provided_node_features(),
+               node_features: nodes[1].node.node_features(),
                short_channel_id: chan_2.0.contents.short_channel_id,
-               channel_features: channelmanager::provided_channel_features(),
+               channel_features: nodes[1].node.channel_features(),
                fee_msat: 1000000,
                cltv_expiry_delta: TEST_FINAL_CLTV,
        });
@@ -1088,8 +1094,8 @@ fn holding_cell_htlc_counting() {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let mut payments = Vec::new();
        for _ in 0..crate::ln::channel::OUR_MAX_HTLCS {
@@ -1203,11 +1209,11 @@ fn duplicate_htlc_test() {
        let mut nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels to route via 3 to 4/5 from 0/1/2
-       create_announced_chan_between_nodes(&nodes, 0, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 3, 4, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 3, 5, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 3);
+       create_announced_chan_between_nodes(&nodes, 1, 3);
+       create_announced_chan_between_nodes(&nodes, 2, 3);
+       create_announced_chan_between_nodes(&nodes, 3, 4);
+       create_announced_chan_between_nodes(&nodes, 3, 5);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
 
@@ -1232,7 +1238,7 @@ fn test_duplicate_htlc_different_direction_onchain() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // balancing
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
@@ -1240,7 +1246,7 @@ fn test_duplicate_htlc_different_direction_onchain() {
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
 
        let (route, _, _, _) = get_route_and_payment_hash!(nodes[1], nodes[0], 800_000);
-       let node_a_payment_secret = nodes[0].node.create_inbound_payment_for_hash(payment_hash, None, 7200).unwrap();
+       let node_a_payment_secret = nodes[0].node.create_inbound_payment_for_hash(payment_hash, None, 7200, None).unwrap();
        send_along_route_with_secret(&nodes[1], route, &[&[&nodes[0]]], 800_000, payment_hash, node_a_payment_secret);
 
        // Provide preimage to node 0 by claiming payment
@@ -1319,13 +1325,13 @@ fn test_basic_channel_reserve() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
-       let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       let chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        let channel_reserve = chan_stat.channel_reserve_msat;
 
        // The 2* and +1 are for the fee spike reserve.
-       let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1, get_opt_anchors!(nodes[0], chan.2));
+       let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], nodes[1], chan.2), 1 + 1, get_opt_anchors!(nodes[0], nodes[1], chan.2));
        let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send + 1);
        let err = nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).err().unwrap();
@@ -1351,7 +1357,7 @@ fn test_fee_spike_violation_fails_htlc() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 3460001);
        // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
@@ -1378,15 +1384,16 @@ fn test_fee_spike_violation_fails_htlc() {
        // nodes[0] just sent. In the code for construction of this message, "local" refers
        // to the sender of the message, and "remote" refers to the receiver.
 
-       let feerate_per_kw = get_feerate!(nodes[0], chan.2);
+       let feerate_per_kw = get_feerate!(nodes[0], nodes[1], chan.2);
 
        const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
 
        // 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_secret, next_local_point, local_funding) = {
-               let chan_lock = nodes[0].node.channel_state.lock().unwrap();
-               let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let local_chan = chan_lock.channel_by_id.get(&chan.2).unwrap();
                let chan_signer = local_chan.get_signer();
                // Make the signer believe we validated another commitment, so we can release the secret
                chan_signer.get_enforcement_state().last_holder_commitment -= 1;
@@ -1398,8 +1405,9 @@ fn test_fee_spike_violation_fails_htlc() {
                 chan_signer.pubkeys().funding_pubkey)
        };
        let (remote_delayed_payment_basepoint, remote_htlc_basepoint, remote_point, remote_funding) = {
-               let chan_lock = nodes[1].node.channel_state.lock().unwrap();
-               let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
+               let per_peer_state = nodes[1].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[0].node.get_our_node_id()).unwrap().lock().unwrap();
+               let remote_chan = chan_lock.channel_by_id.get(&chan.2).unwrap();
                let chan_signer = remote_chan.get_signer();
                let pubkeys = chan_signer.pubkeys();
                (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint,
@@ -1426,8 +1434,9 @@ fn test_fee_spike_violation_fails_htlc() {
        let commitment_number = INITIAL_COMMITMENT_NUMBER - 1;
 
        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 per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let local_chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let local_chan = local_chan_lock.channel_by_id.get(&chan.2).unwrap();
                let local_chan_signer = local_chan.get_signer();
                let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
                        commitment_number,
@@ -1495,7 +1504,7 @@ fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
 
        push_amt -= Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
 
-       let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt);
 
        // Sending exactly enough to hit the reserve amount should be accepted
        for _ in 0..MIN_AFFORDABLE_HTLC_COUNT {
@@ -1526,7 +1535,7 @@ fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
        let mut push_amt = 100_000_000;
        push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
        push_amt -= Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt);
 
        // Send four HTLCs to cover the initial push_msat buffer we're required to include
        for _ in 0..MIN_AFFORDABLE_HTLC_COUNT {
@@ -1579,7 +1588,7 @@ fn test_chan_reserve_dust_inbound_htlcs_outbound_chan() {
        let mut push_amt = 100_000_000;
        push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
        push_amt -= Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, push_amt, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, push_amt);
 
        let dust_amt = crate::ln::channel::MIN_CHAN_DUST_LIMIT_SATOSHIS * 1000
                + feerate_per_kw as u64 * htlc_success_tx_weight(opt_anchors) / 1000 * 1000 - 1;
@@ -1624,7 +1633,7 @@ fn test_chan_init_feerate_unaffordability() {
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, push_amt, 42, None).unwrap();
        let mut open_channel_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
        open_channel_msg.push_msat += 1;
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &open_channel_msg);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel_msg);
 
        let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(msg_events.len(), 1);
@@ -1644,7 +1653,7 @@ fn test_chan_reserve_dust_inbound_htlcs_inbound_chan() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98000000);
 
        let payment_amt = 46000; // Dust amount
        // In the previous code, these first four payments would succeed.
@@ -1672,14 +1681,14 @@ fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
+       let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000);
 
        let feemsat = 239;
        let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
-       let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
-       let feerate = get_feerate!(nodes[0], chan.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan.2);
+       let chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
 
        // Add a 2* and +1 for the fee spike reserve.
        let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors);
@@ -1736,7 +1745,7 @@ fn test_inbound_outbound_capacity_is_not_zero() {
        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 _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
        let channels0 = node_chanmgrs[0].list_channels();
        let channels1 = node_chanmgrs[1].list_channels();
        let default_config = UserConfig::default();
@@ -1765,14 +1774,14 @@ fn test_channel_reserve_holding_cell_htlcs() {
        config.channel_config.forwarding_fee_base_msat = 239;
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001);
+       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001);
 
-       let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
-       let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
+       let mut stat01 = get_channel_value_stat!(nodes[0], nodes[1], chan_1.2);
+       let mut stat11 = get_channel_value_stat!(nodes[1], nodes[0], chan_1.2);
 
-       let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
-       let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
+       let mut stat12 = get_channel_value_stat!(nodes[1], nodes[2], chan_2.2);
+       let mut stat22 = get_channel_value_stat!(nodes[2], nodes[1], chan_2.2);
 
        macro_rules! expect_forward {
                ($node: expr) => {{
@@ -1786,15 +1795,15 @@ fn test_channel_reserve_holding_cell_htlcs() {
 
        let feemsat = 239; // set above
        let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
-       let feerate = get_feerate!(nodes[0], chan_1.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan_1.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan_1.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_1.2);
 
        let recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
 
        // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
        {
-               let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id())
-                       .with_features(channelmanager::provided_invoice_features()).with_max_channel_saturation_power_of_half(0);
+               let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id(), TEST_FINAL_CLTV)
+                       .with_features(nodes[2].node.invoice_features()).with_max_channel_saturation_power_of_half(0);
                let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], payment_params, recv_value_0, TEST_FINAL_CLTV);
                route.paths[0].last_mut().unwrap().fee_msat += 1;
                assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
@@ -1818,17 +1827,17 @@ fn test_channel_reserve_holding_cell_htlcs() {
                        break;
                }
 
-               let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id())
-                       .with_features(channelmanager::provided_invoice_features()).with_max_channel_saturation_power_of_half(0);
+               let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id(), TEST_FINAL_CLTV)
+                       .with_features(nodes[2].node.invoice_features()).with_max_channel_saturation_power_of_half(0);
                let route = get_route!(nodes[0], payment_params, recv_value_0, TEST_FINAL_CLTV).unwrap();
                let (payment_preimage, ..) = send_along_route(&nodes[0], route, &[&nodes[1], &nodes[2]], recv_value_0);
                claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
 
                let (stat01_, stat11_, stat12_, stat22_) = (
-                       get_channel_value_stat!(nodes[0], chan_1.2),
-                       get_channel_value_stat!(nodes[1], chan_1.2),
-                       get_channel_value_stat!(nodes[1], chan_2.2),
-                       get_channel_value_stat!(nodes[2], chan_2.2),
+                       get_channel_value_stat!(nodes[0], nodes[1], chan_1.2),
+                       get_channel_value_stat!(nodes[1], nodes[0], chan_1.2),
+                       get_channel_value_stat!(nodes[1], nodes[2], chan_2.2),
+                       get_channel_value_stat!(nodes[2], nodes[1], chan_2.2),
                );
 
                assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
@@ -1879,7 +1888,7 @@ fn test_channel_reserve_holding_cell_htlcs() {
        let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
        let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
        {
-               let stat = get_channel_value_stat!(nodes[0], chan_1.2);
+               let stat = get_channel_value_stat!(nodes[0], nodes[1], chan_1.2);
                assert_eq!(stat.value_to_self_msat - (stat.pending_outbound_htlcs_amount_msat + recv_value_21 + recv_value_22 + total_fee_msat + total_fee_msat + commit_tx_fee_3_htlcs), stat.channel_reserve_msat);
        }
 
@@ -1995,11 +2004,11 @@ fn test_channel_reserve_holding_cell_htlcs() {
 
        let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
        let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat) - (recv_value_3 + total_fee_msat);
-       let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
+       let stat0 = get_channel_value_stat!(nodes[0], nodes[1], chan_1.2);
        assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
        assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat + commit_tx_fee_1_htlc);
 
-       let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
+       let stat2 = get_channel_value_stat!(nodes[2], nodes[1], chan_2.2);
        assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22 + recv_value_3);
 }
 
@@ -2031,9 +2040,9 @@ fn channel_reserve_in_flight_removes() {
        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_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
-       let b_chan_values = get_channel_value_stat!(nodes[1], chan_1.2);
+       let b_chan_values = get_channel_value_stat!(nodes[1], nodes[0], chan_1.2);
        // Route the first two HTLCs.
        let payment_value_1 = b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000;
        let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], payment_value_1);
@@ -2166,10 +2175,10 @@ fn channel_monitor_network_test() {
        let nodes = create_network(5, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+       let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
+       let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4);
 
        // Make sure all nodes are at the same starting height
        connect_blocks(&nodes[0], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
@@ -2363,7 +2372,7 @@ fn test_justice_tx() {
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
        *nodes[0].connect_style.borrow_mut() = ConnectStyle::FullBlockViaListen;
        // Create some new channels:
-       let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // A pending HTLC which will be revoked:
        let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
@@ -2410,7 +2419,7 @@ fn test_justice_tx() {
 
        // We test justice_tx build by A on B's revoked HTLC-Success tx
        // Create some new channels:
-       let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1);
        {
                let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
                node_txn.clear();
@@ -2460,7 +2469,7 @@ fn revoked_output_claim() {
        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_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
        // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
        let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
        assert_eq!(revoked_local_txn.len(), 1);
@@ -2495,7 +2504,7 @@ fn claim_htlc_outputs_shared_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some new channel:
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // Rebalance the network to generate htlc in the two directions
        send_payment(&nodes[0], &[&nodes[1]], 8_000_000);
@@ -2561,7 +2570,7 @@ fn claim_htlc_outputs_single_tx() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // Rebalance the network to generate htlc in the two directions
        send_payment(&nodes[0], &[&nodes[1]], 8_000_000);
@@ -2656,8 +2665,8 @@ fn test_htlc_on_chain_success() {
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        // Ensure all nodes are at the same height
        let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
@@ -2738,7 +2747,7 @@ fn test_htlc_on_chain_success() {
                },
                _ => panic!()
        }
-       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       let mut events = nodes[1].node.get_and_clear_pending_msg_events();
        {
                let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
                assert_eq!(added_monitors.len(), 2);
@@ -2747,16 +2756,16 @@ fn test_htlc_on_chain_success() {
                added_monitors.clear();
        }
        assert_eq!(events.len(), 3);
-       match events[0] {
-               MessageSendEvent::BroadcastChannelUpdate { .. } => {},
-               _ => panic!("Unexpected event"),
-       }
-       match events[1] {
+
+       let nodes_2_event = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut events);
+       let nodes_0_event = remove_first_msg_event_to_node(&nodes[0].node.get_our_node_id(), &mut events);
+
+       match nodes_2_event {
                MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
                _ => panic!("Unexpected event"),
        }
 
-       match events[2] {
+       match nodes_0_event {
                MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
                        assert!(update_add_htlcs.is_empty());
                        assert!(update_fail_htlcs.is_empty());
@@ -2766,6 +2775,13 @@ fn test_htlc_on_chain_success() {
                },
                _ => panic!("Unexpected event"),
        };
+
+       // Ensure that the last remaining message event is the BroadcastChannelUpdate msg for chan_2
+       match events[0] {
+               MessageSendEvent::BroadcastChannelUpdate { .. } => {},
+               _ => panic!("Unexpected event"),
+       }
+
        macro_rules! check_tx_local_broadcast {
                ($node: expr, $htlc_offered: expr, $commitment_tx: expr) => { {
                        let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
@@ -2877,8 +2893,8 @@ fn do_test_htlc_on_chain_timeout(connect_style: ConnectStyle) {
        *nodes[2].connect_style.borrow_mut() = connect_style;
 
        // Create some intial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        // Rebalance the network a bit by relaying one payment thorugh all the channels...
        send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
@@ -2990,8 +3006,8 @@ fn test_simple_commitment_revoked_fail_backward() {
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
        // Get the will-be-revoked local txn from nodes[2]
@@ -3049,8 +3065,8 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], if no_to_remote { 10_000 } else { 3_000_000 });
        // Get the will-be-revoked local txn from nodes[2]
@@ -3062,7 +3078,8 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        let value = if use_dust {
                // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
                // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
-               nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().holder_dust_limit_satoshis * 1000
+               nodes[2].node.per_peer_state.read().unwrap().get(&nodes[1].node.get_our_node_id())
+                       .unwrap().lock().unwrap().channel_by_id.get(&chan_2.2).unwrap().holder_dust_limit_satoshis * 1000
        } else { 3000000 };
 
        let (_, first_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
@@ -3153,7 +3170,7 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
 
        let events = nodes[1].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), if deliver_bs_raa { 2 + nodes.len() - 1 } else { 3 + nodes.len() });
+       assert_eq!(events.len(), if deliver_bs_raa { 3 + nodes.len() - 1 } else { 4 + nodes.len() });
        match events[0] {
                Event::ChannelClosed { reason: ClosureReason::CommitmentTxConfirmed, .. } => { },
                _ => panic!("Unexepected event"),
@@ -3164,39 +3181,22 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
                },
                _ => panic!("Unexpected event"),
        }
-       if !deliver_bs_raa {
-               match events[2] {
-                       Event::PendingHTLCsForwardable { .. } => { },
-                       _ => panic!("Unexpected event"),
-               };
-               nodes[1].node.abandon_payment(PaymentId(fourth_payment_hash.0));
-               let payment_failed_events = nodes[1].node.get_and_clear_pending_events();
-               assert_eq!(payment_failed_events.len(), 1);
-               match payment_failed_events[0] {
-                       Event::PaymentFailed { ref payment_hash, .. } => {
-                               assert_eq!(*payment_hash, fourth_payment_hash);
-                       },
-                       _ => panic!("Unexpected event"),
-               }
+       match events[2] {
+               Event::PaymentFailed { ref payment_hash, .. } => {
+                       assert_eq!(*payment_hash, fourth_payment_hash);
+               },
+               _ => panic!("Unexpected event"),
        }
+
        nodes[1].node.process_pending_htlc_forwards();
        check_added_monitors!(nodes[1], 1);
 
-       let events = nodes[1].node.get_and_clear_pending_msg_events();
+       let mut events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), if deliver_bs_raa { 4 } else { 3 });
-       match events[if deliver_bs_raa { 1 } else { 0 }] {
-               MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
-               _ => panic!("Unexpected event"),
-       }
-       match events[if deliver_bs_raa { 2 } else { 1 }] {
-               MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage { channel_id, ref data } }, node_id: _ } => {
-                       assert_eq!(channel_id, chan_2.2);
-                       assert_eq!(data.as_str(), "Channel closed because commitment or closing transaction was confirmed on chain.");
-               },
-               _ => panic!("Unexpected event"),
-       }
+
        if deliver_bs_raa {
-               match events[0] {
+               let nodes_2_event = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut events);
+               match nodes_2_event {
                        MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
                                assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
                                assert_eq!(update_add_htlcs.len(), 1);
@@ -3207,7 +3207,18 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
                        _ => panic!("Unexpected event"),
                }
        }
-       match events[if deliver_bs_raa { 3 } else { 2 }] {
+
+       let nodes_2_event = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut events);
+       match nodes_2_event {
+               MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage { channel_id, ref data } }, node_id: _ } => {
+                       assert_eq!(channel_id, chan_2.2);
+                       assert_eq!(data.as_str(), "Channel closed because commitment or closing transaction was confirmed on chain.");
+               },
+               _ => panic!("Unexpected event"),
+       }
+
+       let nodes_0_event = remove_first_msg_event_to_node(&nodes[0].node.get_our_node_id(), &mut events);
+       match nodes_0_event {
                MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
                        assert!(update_add_htlcs.is_empty());
                        assert_eq!(update_fail_htlcs.len(), 3);
@@ -3222,29 +3233,45 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
                        commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
 
                        let events = nodes[0].node.get_and_clear_pending_events();
-                       assert_eq!(events.len(), 3);
+                       assert_eq!(events.len(), 6);
                        match events[0] {
-                               Event::PaymentPathFailed { ref payment_hash, ref network_update, .. } => {
+                               Event::PaymentPathFailed { ref payment_hash, ref failure, .. } => {
                                        assert!(failed_htlcs.insert(payment_hash.0));
                                        // If we delivered B's RAA we got an unknown preimage error, not something
                                        // that we should update our routing table for.
                                        if !deliver_bs_raa {
-                                               assert!(network_update.is_some());
+                                               if let PathFailure::OnPath { network_update: Some(_) } = failure { } else { panic!("Unexpected path failure") }
                                        }
                                },
                                _ => panic!("Unexpected event"),
                        }
                        match events[1] {
-                               Event::PaymentPathFailed { ref payment_hash, ref network_update, .. } => {
-                                       assert!(failed_htlcs.insert(payment_hash.0));
-                                       assert!(network_update.is_some());
+                               Event::PaymentFailed { ref payment_hash, .. } => {
+                                       assert_eq!(*payment_hash, first_payment_hash);
                                },
                                _ => panic!("Unexpected event"),
                        }
                        match events[2] {
-                               Event::PaymentPathFailed { ref payment_hash, ref network_update, .. } => {
+                               Event::PaymentPathFailed { ref payment_hash, failure: PathFailure::OnPath { network_update: Some(_) }, .. } => {
                                        assert!(failed_htlcs.insert(payment_hash.0));
-                                       assert!(network_update.is_some());
+                               },
+                               _ => panic!("Unexpected event"),
+                       }
+                       match events[3] {
+                               Event::PaymentFailed { ref payment_hash, .. } => {
+                                       assert_eq!(*payment_hash, second_payment_hash);
+                               },
+                               _ => panic!("Unexpected event"),
+                       }
+                       match events[4] {
+                               Event::PaymentPathFailed { ref payment_hash, failure: PathFailure::OnPath { network_update: Some(_) }, .. } => {
+                                       assert!(failed_htlcs.insert(payment_hash.0));
+                               },
+                               _ => panic!("Unexpected event"),
+                       }
+                       match events[5] {
+                               Event::PaymentFailed { ref payment_hash, .. } => {
+                                       assert_eq!(*payment_hash, third_payment_hash);
                                },
                                _ => panic!("Unexpected event"),
                        }
@@ -3252,6 +3279,12 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
                _ => panic!("Unexpected event"),
        }
 
+       // Ensure that the last remaining message event is the BroadcastChannelUpdate msg for chan_2
+       match events[0] {
+               MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
+               _ => panic!("Unexpected event"),
+       }
+
        assert!(failed_htlcs.contains(&first_payment_hash.0));
        assert!(failed_htlcs.contains(&second_payment_hash.0));
        assert!(failed_htlcs.contains(&third_payment_hash.0));
@@ -3279,7 +3312,7 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
        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, 1_000_000, 500_000_000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000);
 
        // Alice -> Bob: Route a payment but without Bob sending revoke_and_ack.
        {
@@ -3328,7 +3361,7 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
                nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_htlc);
        }
        let events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), 2);
+       assert_eq!(events.len(), 3);
        // Check that Alice fails backward the pending HTLC from the second payment.
        match events[0] {
                Event::PaymentPathFailed { payment_hash, .. } => {
@@ -3337,6 +3370,12 @@ fn fail_backward_pending_htlc_upon_channel_failure() {
                _ => panic!("Unexpected event"),
        }
        match events[1] {
+               Event::PaymentFailed { payment_hash, .. } => {
+                       assert_eq!(payment_hash, failed_payment_hash);
+               },
+               _ => panic!("Unexpected event"),
+       }
+       match events[2] {
                Event::ChannelClosed { reason: ClosureReason::ProcessingError { ref err }, .. } => {
                        assert_eq!(err, "Remote side tried to send a 0-msat HTLC");
                },
@@ -3360,7 +3399,7 @@ fn test_htlc_ignore_latest_remote_commitment() {
                // connect_style.
                return;
        }
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        route_payment(&nodes[0], &[&nodes[1]], 10000000);
        nodes[0].node.force_close_broadcasting_latest_txn(&nodes[0].node.list_channels()[0].channel_id, &nodes[1].node.get_our_node_id()).unwrap();
@@ -3391,8 +3430,8 @@ fn test_force_close_fail_back() {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let (route, our_payment_hash, our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 1000000);
 
@@ -3472,7 +3511,7 @@ fn test_dup_events_on_peer_disconnect() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
 
@@ -3483,8 +3522,8 @@ fn test_dup_events_on_peer_disconnect() {
        nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &claim_msgs.update_fulfill_htlcs[0]);
        expect_payment_sent_without_paths!(nodes[0], payment_preimage);
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (0, 0), (false, false));
        expect_payment_path_successful!(nodes[0]);
@@ -3503,9 +3542,9 @@ fn test_peer_disconnected_before_funding_broadcasted() {
        // broadcasted, even though it's created by `nodes[0]`.
        let expected_temporary_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1_000_000, 500_000_000, 42, None).unwrap();
        let open_channel = 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(), channelmanager::provided_init_features(), &open_channel);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
        let accept_channel = 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(), channelmanager::provided_init_features(), &accept_channel);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
 
        let (temporary_channel_id, tx, _funding_output) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 1_000_000, 42);
        assert_eq!(temporary_channel_id, expected_temporary_channel_id);
@@ -3524,8 +3563,8 @@ fn test_peer_disconnected_before_funding_broadcasted() {
 
        // Ensure that the channel is closed with `ClosureReason::DisconnectedPeer` when the peers are
        // disconnected before the funding transaction was broadcasted.
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        check_closed_event!(nodes[0], 1, ClosureReason::DisconnectedPeer);
        check_closed_event!(nodes[1], 1, ClosureReason::DisconnectedPeer);
@@ -3538,11 +3577,11 @@ fn test_simple_peer_disconnect() {
        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_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       create_announced_chan_between_nodes(&nodes, 1, 2);
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
        reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
 
        let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
@@ -3550,8 +3589,8 @@ fn test_simple_peer_disconnect() {
        fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
        claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1);
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
 
        let (payment_preimage_3, payment_hash_3, _) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000);
@@ -3559,8 +3598,8 @@ fn test_simple_peer_disconnect() {
        let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
        let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], true, payment_preimage_3);
        fail_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], true, payment_hash_5);
@@ -3568,7 +3607,7 @@ fn test_simple_peer_disconnect() {
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
        {
                let events = nodes[0].node.get_and_clear_pending_events();
-               assert_eq!(events.len(), 3);
+               assert_eq!(events.len(), 4);
                match events[0] {
                        Event::PaymentSent { payment_preimage, payment_hash, .. } => {
                                assert_eq!(payment_preimage, payment_preimage_3);
@@ -3577,14 +3616,20 @@ fn test_simple_peer_disconnect() {
                        _ => panic!("Unexpected event"),
                }
                match events[1] {
+                       Event::PaymentPathSuccessful { .. } => {},
+                       _ => panic!("Unexpected event"),
+               }
+               match events[2] {
                        Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } => {
                                assert_eq!(payment_hash, payment_hash_5);
                                assert!(payment_failed_permanently);
                        },
                        _ => panic!("Unexpected event"),
                }
-               match events[2] {
-                       Event::PaymentPathSuccessful { .. } => {},
+               match events[3] {
+                       Event::PaymentFailed { payment_hash, .. } => {
+                               assert_eq!(payment_hash, payment_hash_5);
+                       },
                        _ => panic!("Unexpected event"),
                }
        }
@@ -3602,14 +3647,14 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8, simulate_broken
 
        let mut as_channel_ready = None;
        let channel_id = if messages_delivered == 0 {
-               let (channel_ready, chan_id, _) = create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+               let (channel_ready, chan_id, _) = create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001);
                as_channel_ready = Some(channel_ready);
                // nodes[1] doesn't receive the channel_ready message (it'll be re-sent on reconnect)
                // Note that we store it so that if we're running with `simulate_broken_lnd` we can deliver
                // it before the channel_reestablish message.
                chan_id
        } else {
-               create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2
+               create_announced_chan_between_nodes(&nodes, 0, 1).2
        };
 
        let (route, payment_hash_1, payment_preimage_1, payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[1], 1_000_000);
@@ -3654,8 +3699,8 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8, simulate_broken
                }
        }
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
        if messages_delivered < 3 {
                if simulate_broken_lnd {
                        // lnd has a long-standing bug where they send a channel_ready prior to a
@@ -3704,8 +3749,8 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8, simulate_broken
                };
        }
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
 
        nodes[1].node.process_pending_htlc_forwards();
@@ -3787,8 +3832,8 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8, simulate_broken
                }
        }
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
        if messages_delivered < 2 {
                reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (0, 0), (false, false));
                if messages_delivered < 1 {
@@ -3813,9 +3858,10 @@ fn do_test_drop_messages_peer_disconnect(messages_delivered: u8, simulate_broken
        if messages_delivered == 1 || messages_delivered == 2 {
                expect_payment_path_successful!(nodes[0]);
        }
-
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       if messages_delivered <= 5 {
+               nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+               nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
+       }
        reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
 
        if messages_delivered > 2 {
@@ -3856,7 +3902,7 @@ fn test_channel_ready_without_best_block_updated() {
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
        *nodes[0].connect_style.borrow_mut() = ConnectStyle::BestBlockFirstSkippingBlocks;
 
-       let funding_tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 1_000_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let funding_tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 1_000_000, 0);
 
        let conf_height = nodes[0].best_block_info().1 + 1;
        connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH);
@@ -3878,7 +3924,7 @@ fn test_drop_messages_peer_disconnect_dual_htlc() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
 
@@ -3928,13 +3974,13 @@ fn test_drop_messages_peer_disconnect_dual_htlc() {
                _ => panic!("Unexpected event"),
        }
 
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: nodes[1].node.init_features(), remote_network_address: None }, true).unwrap();
        let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
        assert_eq!(reestablish_1.len(), 1);
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: nodes[0].node.init_features(), remote_network_address: None }, false).unwrap();
        let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
        assert_eq!(reestablish_2.len(), 1);
 
@@ -4028,7 +4074,7 @@ fn do_test_htlc_timeout(send_partial_mpp: bool) {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let our_payment_hash = if send_partial_mpp {
                let (route, our_payment_hash, _, payment_secret) = get_route_and_payment_hash!(&nodes[0], nodes[1], 100000);
@@ -4037,7 +4083,7 @@ fn do_test_htlc_timeout(send_partial_mpp: bool) {
                let cur_height = CHAN_CONFIRM_DEPTH + 1; // route_payment calls send_payment, which adds 1 to the current height. So we do the same here to match.
                let payment_id = PaymentId([42; 32]);
                let session_privs = nodes[0].node.test_add_new_pending_payment(our_payment_hash, Some(payment_secret), payment_id, &route).unwrap();
-               nodes[0].node.send_payment_along_path(&route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None, session_privs[0]).unwrap();
+               nodes[0].node.test_send_payment_along_path(&route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None, session_privs[0]).unwrap();
                check_added_monitors!(nodes[0], 1);
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
@@ -4091,8 +4137,8 @@ fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        // Make sure all nodes are at the same starting height
        connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
@@ -4185,7 +4231,7 @@ fn test_claim_sizeable_push_msat() {
        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, 100_000, 98_000_000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 98_000_000);
        nodes[1].node.force_close_broadcasting_latest_txn(&chan.2, &nodes[0].node.get_our_node_id()).unwrap();
        check_closed_broadcast!(nodes[1], true);
        check_added_monitors!(nodes[1], 1);
@@ -4214,7 +4260,7 @@ fn test_claim_on_remote_sizeable_push_msat() {
        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, 100_000, 98_000_000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 98_000_000);
        nodes[0].node.force_close_broadcasting_latest_txn(&chan.2, &nodes[1].node.get_our_node_id()).unwrap();
        check_closed_broadcast!(nodes[0], true);
        check_added_monitors!(nodes[0], 1);
@@ -4246,7 +4292,7 @@ fn test_claim_on_remote_revoked_sizeable_push_msat() {
        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, 100000, 59000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000);
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
        let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
        assert_eq!(revoked_local_txn[0].input.len(), 1);
@@ -4277,7 +4323,7 @@ fn test_static_spendable_outputs_preimage_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 3_000_000);
 
@@ -4324,7 +4370,7 @@ fn test_static_spendable_outputs_timeout_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // Rebalance the network a bit by relaying one payment through all the channels ...
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
@@ -4371,7 +4417,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
        let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
@@ -4407,7 +4453,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
        let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
@@ -4473,7 +4519,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
        let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
@@ -4558,8 +4604,8 @@ fn test_onchain_to_onchain_claim() {
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        // Ensure all nodes are at the same height
        let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
@@ -4615,17 +4661,17 @@ fn test_onchain_to_onchain_claim() {
                _ => panic!("Unexpected event"),
        }
        check_added_monitors!(nodes[1], 1);
-       let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
+       let mut msg_events = nodes[1].node.get_and_clear_pending_msg_events();
        assert_eq!(msg_events.len(), 3);
-       match msg_events[0] {
-               MessageSendEvent::BroadcastChannelUpdate { .. } => {},
-               _ => panic!("Unexpected event"),
-       }
-       match msg_events[1] {
+       let nodes_2_event = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut msg_events);
+       let nodes_0_event = remove_first_msg_event_to_node(&nodes[0].node.get_our_node_id(), &mut msg_events);
+
+       match nodes_2_event {
                MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
                _ => panic!("Unexpected event"),
        }
-       match msg_events[2] {
+
+       match nodes_0_event {
                MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
                        assert!(update_add_htlcs.is_empty());
                        assert!(update_fail_htlcs.is_empty());
@@ -4635,6 +4681,13 @@ fn test_onchain_to_onchain_claim() {
                },
                _ => panic!("Unexpected event"),
        };
+
+       // Ensure that the last remaining message event is the BroadcastChannelUpdate msg for chan_2
+       match msg_events[0] {
+               MessageSendEvent::BroadcastChannelUpdate { .. } => {},
+               _ => panic!("Unexpected event"),
+       }
+
        // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
        let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
        mine_transaction(&nodes[1], &commitment_tx[0]);
@@ -4667,9 +4720,9 @@ fn test_duplicate_payment_hash_one_failure_one_success() {
                &[Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+       create_announced_chan_between_nodes(&nodes, 2, 3);
 
        let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
        connect_blocks(&nodes[0], node_max_height - nodes[0].best_block_info().1);
@@ -4679,14 +4732,14 @@ fn test_duplicate_payment_hash_one_failure_one_success() {
 
        let (our_payment_preimage, duplicate_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 900_000);
 
-       let payment_secret = nodes[3].node.create_inbound_payment_for_hash(duplicate_payment_hash, None, 7200).unwrap();
+       let payment_secret = nodes[3].node.create_inbound_payment_for_hash(duplicate_payment_hash, None, 7200, None).unwrap();
        // We reduce the final CLTV here by a somewhat arbitrary constant to keep it under the one-byte
        // script push size limit so that the below script length checks match
        // ACCEPTED_HTLC_SCRIPT_WEIGHT.
-       let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id())
-               .with_features(channelmanager::provided_invoice_features());
-       let (route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[3], payment_params, 900000, TEST_FINAL_CLTV - 40);
-       send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2], &nodes[3]]], 900000, duplicate_payment_hash, payment_secret);
+       let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id(), TEST_FINAL_CLTV - 40)
+               .with_features(nodes[3].node.invoice_features());
+       let (route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[3], payment_params, 800_000, TEST_FINAL_CLTV - 40);
+       send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2], &nodes[3]]], 800_000, duplicate_payment_hash, payment_secret);
 
        let commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
        assert_eq!(commitment_txn[0].input.len(), 1);
@@ -4706,25 +4759,35 @@ fn test_duplicate_payment_hash_one_failure_one_success() {
 
                check_spends!(node_txn[0], commitment_txn[0]);
                assert_eq!(node_txn[0].input.len(), 1);
+               assert_eq!(node_txn[0].output.len(), 1);
 
                if node_txn.len() > 2 {
                        check_spends!(node_txn[1], commitment_txn[0]);
                        assert_eq!(node_txn[1].input.len(), 1);
+                       assert_eq!(node_txn[1].output.len(), 1);
                        assert_eq!(node_txn[0].input[0].previous_output, node_txn[1].input[0].previous_output);
 
                        check_spends!(node_txn[2], commitment_txn[0]);
+                       assert_eq!(node_txn[2].input.len(), 1);
+                       assert_eq!(node_txn[2].output.len(), 1);
                        assert_ne!(node_txn[0].input[0].previous_output, node_txn[2].input[0].previous_output);
                } else {
                        check_spends!(node_txn[1], commitment_txn[0]);
+                       assert_eq!(node_txn[1].input.len(), 1);
+                       assert_eq!(node_txn[1].output.len(), 1);
                        assert_ne!(node_txn[0].input[0].previous_output, node_txn[1].input[0].previous_output);
                }
 
                assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
                assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
+               // Assign htlc_timeout_tx to the forwarded HTLC (with value ~800 sats). The received HTLC
+               // (with value 900 sats) will be claimed in the below `claim_funds` call.
                if node_txn.len() > 2 {
                        assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
+                       htlc_timeout_tx = if node_txn[2].output[0].value < 900 { node_txn[2].clone() } else { node_txn[0].clone() };
+               } else {
+                       htlc_timeout_tx = if node_txn[0].output[0].value < 900 { node_txn[1].clone() } else { node_txn[0].clone() };
                }
-               htlc_timeout_tx = node_txn[0].clone();
        }
 
        nodes[2].node.claim_funds(our_payment_preimage);
@@ -4772,10 +4835,8 @@ fn test_duplicate_payment_hash_one_failure_one_success() {
        expect_payment_failed_with_update!(nodes[0], duplicate_payment_hash, false, chan_2.0.contents.short_channel_id, true);
 
        // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
-       // Note that the fee paid is effectively double as the HTLC value (including the nodes[1] fee
-       // and nodes[2] fee) is rounded down and then claimed in full.
        mine_transaction(&nodes[1], &htlc_success_txn[1]);
-       expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(196*2), true, true);
+       expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(196), true, true);
        let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        assert!(updates.update_add_htlcs.is_empty());
        assert!(updates.update_fail_htlcs.is_empty());
@@ -4805,7 +4866,7 @@ fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 9_000_000);
        let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
@@ -4873,48 +4934,49 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
                &[Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 
-       let _chan_0_2 = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let _chan_1_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2_3 = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_3_4 = create_announced_chan_between_nodes(&nodes, 3, 4, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_3_5  = create_announced_chan_between_nodes(&nodes, 3, 5, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan_0_2 = create_announced_chan_between_nodes(&nodes, 0, 2);
+       let _chan_1_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
+       let chan_2_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
+       let chan_3_4 = create_announced_chan_between_nodes(&nodes, 3, 4);
+       let chan_3_5  = create_announced_chan_between_nodes(&nodes, 3, 5);
 
        // Rebalance and check output sanity...
        send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000);
        send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000);
        assert_eq!(get_local_commitment_txn!(nodes[3], chan_2_3.2)[0].output.len(), 2);
 
-       let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan_2_3.2).unwrap().holder_dust_limit_satoshis;
+       let ds_dust_limit = nodes[3].node.per_peer_state.read().unwrap().get(&nodes[2].node.get_our_node_id())
+               .unwrap().lock().unwrap().channel_by_id.get(&chan_2_3.2).unwrap().holder_dust_limit_satoshis;
        // 0th HTLC:
        let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
        // 1st HTLC:
        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 (route, _, _, _) = get_route_and_payment_hash!(nodes[1], nodes[5], ds_dust_limit*1000);
        // 2nd HTLC:
-       send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_1, nodes[5].node.create_inbound_payment_for_hash(payment_hash_1, None, 7200).unwrap()); // not added < dust limit + HTLC tx fee
+       send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_1, nodes[5].node.create_inbound_payment_for_hash(payment_hash_1, None, 7200, None).unwrap()); // not added < dust limit + HTLC tx fee
        // 3rd HTLC:
-       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_2, nodes[5].node.create_inbound_payment_for_hash(payment_hash_2, None, 7200).unwrap()); // not added < dust limit + HTLC tx fee
+       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_2, nodes[5].node.create_inbound_payment_for_hash(payment_hash_2, None, 7200, None).unwrap()); // not added < dust limit + HTLC tx fee
        // 4th HTLC:
        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_and_payment_hash!(nodes[1], nodes[5], 1000000);
        // 6th HTLC:
-       send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_3, nodes[5].node.create_inbound_payment_for_hash(payment_hash_3, None, 7200).unwrap());
+       send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_3, nodes[5].node.create_inbound_payment_for_hash(payment_hash_3, None, 7200, None).unwrap());
        // 7th HTLC:
-       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_4, nodes[5].node.create_inbound_payment_for_hash(payment_hash_4, None, 7200).unwrap());
+       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_4, nodes[5].node.create_inbound_payment_for_hash(payment_hash_4, None, 7200, None).unwrap());
 
        // 8th HTLC:
        let (_, payment_hash_5, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
        // 9th HTLC:
        let (route, _, _, _) = get_route_and_payment_hash!(nodes[1], nodes[5], ds_dust_limit*1000);
-       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_5, nodes[5].node.create_inbound_payment_for_hash(payment_hash_5, None, 7200).unwrap()); // not added < dust limit + HTLC tx fee
+       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_5, nodes[5].node.create_inbound_payment_for_hash(payment_hash_5, None, 7200, None).unwrap()); // 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_and_payment_hash!(nodes[1], nodes[5], 1000000);
-       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_6, nodes[5].node.create_inbound_payment_for_hash(payment_hash_6, None, 7200).unwrap());
+       send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_6, nodes[5].node.create_inbound_payment_for_hash(payment_hash_6, None, 7200, None).unwrap());
 
        // Double-check that six of the new HTLC were added
        // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
@@ -5080,20 +5142,21 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        }
 
        let as_events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
+       assert_eq!(as_events.len(), if announce_latest { 10 } else { 6 });
        let mut as_failds = HashSet::new();
        let mut as_updates = 0;
        for event in as_events.iter() {
-               if let &Event::PaymentPathFailed { ref payment_hash, ref payment_failed_permanently, ref network_update, .. } = event {
+               if let &Event::PaymentPathFailed { ref payment_hash, ref payment_failed_permanently, ref failure, .. } = event {
                        assert!(as_failds.insert(*payment_hash));
                        if *payment_hash != payment_hash_2 {
                                assert_eq!(*payment_failed_permanently, deliver_last_raa);
                        } else {
                                assert!(!payment_failed_permanently);
                        }
-                       if network_update.is_some() {
+                       if let PathFailure::OnPath { network_update: Some(_) } = failure {
                                as_updates += 1;
                        }
+               } else if let &Event::PaymentFailed { .. } = event {
                } else { panic!("Unexpected event"); }
        }
        assert!(as_failds.contains(&payment_hash_1));
@@ -5105,20 +5168,21 @@ fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, anno
        assert!(as_failds.contains(&payment_hash_6));
 
        let bs_events = nodes[1].node.get_and_clear_pending_events();
-       assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
+       assert_eq!(bs_events.len(), if announce_latest { 8 } else { 6 });
        let mut bs_failds = HashSet::new();
        let mut bs_updates = 0;
        for event in bs_events.iter() {
-               if let &Event::PaymentPathFailed { ref payment_hash, ref payment_failed_permanently, ref network_update, .. } = event {
+               if let &Event::PaymentPathFailed { ref payment_hash, ref payment_failed_permanently, ref failure, .. } = event {
                        assert!(bs_failds.insert(*payment_hash));
                        if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
                                assert_eq!(*payment_failed_permanently, deliver_last_raa);
                        } else {
                                assert!(!payment_failed_permanently);
                        }
-                       if network_update.is_some() {
+                       if let PathFailure::OnPath { network_update: Some(_) } = failure {
                                bs_updates += 1;
                        }
+               } else if let &Event::PaymentFailed { .. } = event {
                } else { panic!("Unexpected event"); }
        }
        assert!(bs_failds.contains(&payment_hash_1));
@@ -5161,7 +5225,7 @@ fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
        let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
@@ -5214,8 +5278,10 @@ fn test_key_derivation_params() {
        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, &chanmon_cfgs[0].persister, &keys_manager);
-       let network_graph = NetworkGraph::new(chanmon_cfgs[0].chain_source.genesis_hash, &chanmon_cfgs[0].logger);
-       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, network_graph, node_seed: seed, features: channelmanager::provided_init_features() };
+       let network_graph = Arc::new(NetworkGraph::new(Network::Testnet, &chanmon_cfgs[0].logger));
+       let scorer = Mutex::new(test_utils::TestScorer::new());
+       let router = test_utils::TestRouter::new(network_graph.clone(), &scorer);
+       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, router, chain_monitor, keys_manager: &keys_manager, network_graph, node_seed: seed, override_init_features: alloc::rc::Rc::new(core::cell::RefCell::new(None)) };
        let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        node_cfgs.remove(0);
        node_cfgs.insert(0, node);
@@ -5226,8 +5292,8 @@ fn test_key_derivation_params() {
        // Create some initial channels
        // Create a dummy channel to advance index by one and thus test re-derivation correctness
        // for node 0
-       let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2);
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
        assert_ne!(chan_0.3.output[0].script_pubkey, chan_1.3.output[0].script_pubkey);
 
        // Ensure all nodes are at the same height
@@ -5293,7 +5359,7 @@ fn test_static_output_closing_tx() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
        let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
@@ -5320,7 +5386,7 @@ fn do_htlc_claim_local_commitment_only(use_dust: bool) {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3_000_000 });
 
@@ -5360,7 +5426,7 @@ fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
        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(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], if use_dust { 50000 } else { 3000000 });
        nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
@@ -5390,7 +5456,7 @@ fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
        // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
@@ -5482,7 +5548,7 @@ fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on i
        let push_msat=10001;
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
        let node0_to_1_send_open_channel = 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(), channelmanager::provided_init_features(), &node0_to_1_send_open_channel);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &node0_to_1_send_open_channel);
        get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
 
        // Create a second channel with the same random values. This used to panic due to a colliding
@@ -5549,7 +5615,7 @@ fn bolt2_open_channel_sane_dust_limit() {
        node0_to_1_send_open_channel.dust_limit_satoshis = 547;
        node0_to_1_send_open_channel.channel_reserve_satoshis = 100001;
 
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &node0_to_1_send_open_channel);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &node0_to_1_send_open_channel);
        let events = nodes[1].node.get_and_clear_pending_msg_events();
        let err_msg = match events[0] {
                MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id: _ } => {
@@ -5570,7 +5636,7 @@ fn test_fail_holding_cell_htlc_upon_free() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        // First nodes[0] generates an update_fee, setting the channel's
        // pending_update_fee.
@@ -5592,10 +5658,10 @@ fn test_fail_holding_cell_htlc_upon_free() {
 
        nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
 
-       let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        let channel_reserve = chan_stat.channel_reserve_msat;
-       let feerate = get_feerate!(nodes[0], chan.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
 
        // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
        let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
@@ -5603,7 +5669,7 @@ fn test_fail_holding_cell_htlc_upon_free() {
 
        // Send a payment which passes reserve checks but gets stuck in the holding cell.
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
-       chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
 
        // Flush the pending fee update.
@@ -5616,7 +5682,7 @@ fn test_fail_holding_cell_htlc_upon_free() {
        // Upon receipt of the RAA, there will be an attempt to resend the holding cell
        // HTLC, but now that the fee has been raised the payment will now fail, causing
        // us to surface its failure to the user.
-       chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
        nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Freeing holding cell with 1 HTLC updates in channel {}", hex::encode(chan.2)), 1);
        let failure_log = format!("Failed to send HTLC with payment_hash {} due to Cannot send value that would put our balance under counterparty-announced channel reserve value ({}) in channel {}",
@@ -5625,18 +5691,22 @@ fn test_fail_holding_cell_htlc_upon_free() {
 
        // Check that the payment failed to be sent out.
        let events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), 1);
+       assert_eq!(events.len(), 2);
        match &events[0] {
-               &Event::PaymentPathFailed { ref payment_id, ref payment_hash, ref payment_failed_permanently, ref network_update, ref all_paths_failed, ref short_channel_id, .. } => {
+               &Event::PaymentPathFailed { ref payment_id, ref payment_hash, ref payment_failed_permanently, failure: PathFailure::OnPath { network_update: None }, ref short_channel_id, .. } => {
                        assert_eq!(PaymentId(our_payment_hash.0), *payment_id.as_ref().unwrap());
                        assert_eq!(our_payment_hash.clone(), *payment_hash);
                        assert_eq!(*payment_failed_permanently, false);
-                       assert_eq!(*all_paths_failed, true);
-                       assert_eq!(*network_update, None);
                        assert_eq!(*short_channel_id, Some(route.paths[0][0].short_channel_id));
                },
                _ => panic!("Unexpected event"),
        }
+       match &events[1] {
+               &Event::PaymentFailed { ref payment_hash, .. } => {
+                       assert_eq!(our_payment_hash.clone(), *payment_hash);
+               },
+               _ => panic!("Unexpected event"),
+       }
 }
 
 // Test that if multiple HTLCs are released from the holding cell and one is
@@ -5648,7 +5718,7 @@ fn test_free_and_fail_holding_cell_htlcs() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        // First nodes[0] generates an update_fee, setting the channel's
        // pending_update_fee.
@@ -5670,10 +5740,10 @@ fn test_free_and_fail_holding_cell_htlcs() {
 
        nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
 
-       let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        let channel_reserve = chan_stat.channel_reserve_msat;
-       let feerate = get_feerate!(nodes[0], chan.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
 
        // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
        let amt_1 = 20000;
@@ -5683,11 +5753,11 @@ fn test_free_and_fail_holding_cell_htlcs() {
 
        // Send 2 payments which pass reserve checks but get stuck in the holding cell.
        nodes[0].node.send_payment(&route_1, payment_hash_1, &Some(payment_secret_1), PaymentId(payment_hash_1.0)).unwrap();
-       chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1);
        let payment_id_2 = PaymentId(nodes[0].keys_manager.get_secure_random_bytes());
        nodes[0].node.send_payment(&route_2, payment_hash_2, &Some(payment_secret_2), payment_id_2).unwrap();
-       chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1 + amt_2);
 
        // Flush the pending fee update.
@@ -5701,7 +5771,7 @@ fn test_free_and_fail_holding_cell_htlcs() {
        // Upon receipt of the RAA, there will be an attempt to resend the holding cell HTLCs,
        // but now that the fee has been raised the second payment will now fail, causing us
        // to surface its failure to the user. The first payment should succeed.
-       chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
        nodes[0].logger.assert_log("lightning::ln::channel".to_string(), format!("Freeing holding cell with 2 HTLC updates in channel {}", hex::encode(chan.2)), 1);
        let failure_log = format!("Failed to send HTLC with payment_hash {} due to Cannot send value that would put our balance under counterparty-announced channel reserve value ({}) in channel {}",
@@ -5710,18 +5780,22 @@ fn test_free_and_fail_holding_cell_htlcs() {
 
        // Check that the second payment failed to be sent out.
        let events = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), 1);
+       assert_eq!(events.len(), 2);
        match &events[0] {
-               &Event::PaymentPathFailed { ref payment_id, ref payment_hash, ref payment_failed_permanently, ref network_update, ref all_paths_failed, ref short_channel_id, .. } => {
+               &Event::PaymentPathFailed { ref payment_id, ref payment_hash, ref payment_failed_permanently, failure: PathFailure::OnPath { network_update: None }, ref short_channel_id, .. } => {
                        assert_eq!(payment_id_2, *payment_id.as_ref().unwrap());
                        assert_eq!(payment_hash_2.clone(), *payment_hash);
                        assert_eq!(*payment_failed_permanently, false);
-                       assert_eq!(*all_paths_failed, true);
-                       assert_eq!(*network_update, None);
                        assert_eq!(*short_channel_id, Some(route_2.paths[0][0].short_channel_id));
                },
                _ => panic!("Unexpected event"),
        }
+       match &events[1] {
+               &Event::PaymentFailed { ref payment_hash, .. } => {
+                       assert_eq!(payment_hash_2.clone(), *payment_hash);
+               },
+               _ => panic!("Unexpected event"),
+       }
 
        // Complete the first payment and the RAA from the fee update.
        let (payment_event, send_raa_event) = {
@@ -5774,8 +5848,8 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
        config.channel_config.forwarding_fee_base_msat = 196;
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config.clone()), Some(config.clone()), Some(config.clone())]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
+       let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000);
 
        // First nodes[1] generates an update_fee, setting the channel's
        // pending_update_fee.
@@ -5797,10 +5871,10 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
 
        nodes[2].node.handle_update_fee(&nodes[1].node.get_our_node_id(), update_msg.unwrap());
 
-       let mut chan_stat = get_channel_value_stat!(nodes[0], chan_0_1.2);
+       let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan_0_1.2);
        let channel_reserve = chan_stat.channel_reserve_msat;
-       let feerate = get_feerate!(nodes[0], chan_0_1.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan_0_1.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan_0_1.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_0_1.2);
 
        // Send a payment which passes reserve checks but gets stuck in the holding cell.
        let feemsat = 239;
@@ -5821,7 +5895,7 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
        commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
        expect_pending_htlcs_forwardable!(nodes[1]);
 
-       chan_stat = get_channel_value_stat!(nodes[1], chan_1_2.2);
+       chan_stat = get_channel_value_stat!(nodes[1], nodes[2], chan_1_2.2);
        assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
 
        // Flush the pending fee update.
@@ -5905,7 +5979,7 @@ fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100000);
        route.paths[0][0].fee_msat = 100;
@@ -5923,7 +5997,7 @@ fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100000);
        route.paths[0][0].fee_msat = 0;
@@ -5941,7 +6015,7 @@ fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
@@ -5964,10 +6038,10 @@ 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, 1000000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0);
 
-       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id())
-               .with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), 0)
+               .with_features(nodes[1].node.invoice_features());
        let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], payment_params, 100000000, 0);
        route.paths[0].last_mut().unwrap().cltv_expiry_delta = 500000001;
        unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)), true, APIError::InvalidRoute { ref err },
@@ -5983,8 +6057,9 @@ fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment()
        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, 1000000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().counterparty_max_accepted_htlcs as u64;
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0);
+       let max_accepted_htlcs = nodes[1].node.per_peer_state.read().unwrap().get(&nodes[0].node.get_our_node_id())
+               .unwrap().lock().unwrap().channel_by_id.get(&chan.2).unwrap().counterparty_max_accepted_htlcs as u64;
 
        for i in 0..max_accepted_htlcs {
                let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100000);
@@ -6024,8 +6099,8 @@ fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
        let channel_value = 100000;
-       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).counterparty_max_htlc_value_in_flight_msat;
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0);
+       let max_in_flight = get_channel_value_stat!(nodes[0], nodes[1], chan.2).counterparty_max_htlc_value_in_flight_msat;
 
        send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight);
 
@@ -6050,11 +6125,12 @@ fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
        let htlc_minimum_msat: u64;
        {
-               let chan_lock = nodes[0].node.channel_state.lock().unwrap();
-               let channel = chan_lock.by_id.get(&chan.2).unwrap();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let channel = chan_lock.channel_by_id.get(&chan.2).unwrap();
                htlc_minimum_msat = channel.get_holder_htlc_minimum_msat();
        }
 
@@ -6078,12 +6154,12 @@ fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
-       let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
+       let chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
        let channel_reserve = chan_stat.channel_reserve_msat;
-       let feerate = get_feerate!(nodes[0], chan.2);
-       let opt_anchors = get_opt_anchors!(nodes[0], chan.2);
+       let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
+       let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
        // The 2* and +1 are for the fee spike reserve.
        let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
 
@@ -6114,7 +6190,7 @@ fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
        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, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 3999999);
        let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
@@ -6153,13 +6229,13 @@ fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
        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, 1000000, 1000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
        let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
-       updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).counterparty_max_htlc_value_in_flight_msat + 1;
+       updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], nodes[0], chan.2).counterparty_max_htlc_value_in_flight_msat + 1;
        nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
 
        assert!(nodes[1].node.list_channels().is_empty());
@@ -6177,7 +6253,7 @@ fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
@@ -6202,7 +6278,7 @@ fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
@@ -6210,12 +6286,12 @@ fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
        nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
 
        //Disconnect and Reconnect
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: nodes[1].node.init_features(), remote_network_address: None }, true).unwrap();
        let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
        assert_eq!(reestablish_1.len(), 1);
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: nodes[0].node.init_features(), remote_network_address: None }, false).unwrap();
        let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
        assert_eq!(reestablish_2.len(), 1);
        nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
@@ -6247,7 +6323,7 @@ fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
        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(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
        let (route, our_payment_hash, our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
 
@@ -6278,7 +6354,7 @@ fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
        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(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
@@ -6309,7 +6385,7 @@ fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment()
        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(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
@@ -6340,7 +6416,7 @@ fn test_update_fulfill_htlc_bolt2_incorrect_htlc_id() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (our_payment_preimage, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 100_000);
 
@@ -6383,7 +6459,7 @@ fn test_update_fulfill_htlc_bolt2_wrong_preimage() {
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        let (our_payment_preimage, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 100_000);
 
@@ -6426,7 +6502,7 @@ fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_messag
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 1000000);
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
@@ -6473,8 +6549,8 @@ fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_upda
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
+       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 100000);
 
@@ -6547,8 +6623,8 @@ fn test_channel_failed_after_message_with_badonion_node_perm_bits_set() {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 100_000);
 
@@ -6602,13 +6678,12 @@ fn test_channel_failed_after_message_with_badonion_node_perm_bits_set() {
        }
 
        let events_5 = nodes[0].node.get_and_clear_pending_events();
-       assert_eq!(events_5.len(), 1);
+       assert_eq!(events_5.len(), 2);
 
        // Expect a PaymentPathFailed event with a ChannelFailure network update for the channel between
        // the node originating the error to its next hop.
        match events_5[0] {
-               Event::PaymentPathFailed { network_update:
-                       Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent }), error_code, ..
+               Event::PaymentPathFailed { error_code, failure: PathFailure::OnPath { network_update: Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent }) }, ..
                } => {
                        assert_eq!(short_channel_id, chan_2.0.contents.short_channel_id);
                        assert!(is_permanent);
@@ -6616,6 +6691,12 @@ fn test_channel_failed_after_message_with_badonion_node_perm_bits_set() {
                },
                _ => panic!("Unexpected event"),
        }
+       match events_5[1] {
+               Event::PaymentFailed { payment_hash, .. } => {
+                       assert_eq!(payment_hash, our_payment_hash);
+               },
+               _ => panic!("Unexpected event"),
+       }
 
        // TODO: Test actual removal of channel from NetworkGraph when it's implemented.
 }
@@ -6630,9 +6711,10 @@ fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan =create_announced_chan_between_nodes(&nodes, 0, 1);
 
-       let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
+       let bs_dust_limit = nodes[1].node.per_peer_state.read().unwrap().get(&nodes[0].node.get_our_node_id())
+               .unwrap().lock().unwrap().channel_by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
 
        // We route 2 dust-HTLCs between A and B
        let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
@@ -6686,7 +6768,7 @@ fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
        connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
        let events = nodes[0].node.get_and_clear_pending_events();
        // Only 2 PaymentPathFailed events should show up, over-dust HTLC has to be failed by timeout tx
-       assert_eq!(events.len(), 2);
+       assert_eq!(events.len(), 4);
        let mut first_failed = false;
        for event in events {
                match event {
@@ -6697,7 +6779,8 @@ fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
                                } else {
                                        assert_eq!(payment_hash, payment_hash_2);
                                }
-                       }
+                       },
+                       Event::PaymentFailed { .. } => {}
                        _ => panic!("Unexpected event"),
                }
        }
@@ -6721,9 +6804,10 @@ fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
        let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-       let chan = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
 
-       let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
+       let bs_dust_limit = nodes[1].node.per_peer_state.read().unwrap().get(&nodes[0].node.get_our_node_id())
+               .unwrap().lock().unwrap().channel_by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
 
        let (_payment_preimage_1, dust_hash, _payment_secret_1) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
        let (_payment_preimage_2, non_dust_hash, _payment_secret_2) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
@@ -6808,7 +6892,7 @@ fn test_user_configurable_csv_delay() {
 
        // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
        if let Err(error) = Channel::new_outbound(&LowerBoundedFeeEstimator::new(&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }),
-               &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &channelmanager::provided_init_features(), 1000000, 1000000, 0,
+               &nodes[0].keys_manager, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &nodes[1].node.init_features(), 1000000, 1000000, 0,
                &low_our_to_self_config, 0, 42)
        {
                match error {
@@ -6822,7 +6906,7 @@ fn test_user_configurable_csv_delay() {
        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(&LowerBoundedFeeEstimator::new(&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }),
-               &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &channelmanager::provided_init_features(), &open_channel, 0,
+               &nodes[0].keys_manager, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &nodes[0].node.channel_type_features(), &nodes[1].node.init_features(), &open_channel, 0,
                &low_our_to_self_config, 0, &nodes[0].logger, 42)
        {
                match error {
@@ -6833,10 +6917,10 @@ fn test_user_configurable_csv_delay() {
 
        // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Chanel::accept_channel()
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &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(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
        let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
        accept_channel.to_self_delay = 200;
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &accept_channel);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
        let reason_msg;
        if let MessageSendEvent::HandleError { ref action, .. } = nodes[0].node.get_and_clear_pending_msg_events()[0] {
                match action {
@@ -6854,7 +6938,7 @@ fn test_user_configurable_csv_delay() {
        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(&LowerBoundedFeeEstimator::new(&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }),
-               &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &channelmanager::provided_init_features(), &open_channel, 0,
+               &nodes[0].keys_manager, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &nodes[0].node.channel_type_features(), &nodes[1].node.init_features(), &open_channel, 0,
                &high_their_to_self_config, 0, &nodes[0].logger, 42)
        {
                match error {
@@ -6876,14 +6960,14 @@ fn test_check_htlc_underpaying() {
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channels
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
-       let scorer = test_utils::TestScorer::with_penalty(0);
+       let scorer = test_utils::TestScorer::new();
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
-       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), TEST_FINAL_CLTV).with_features(nodes[1].node.invoice_features());
        let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), None, 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
        let (_, our_payment_hash, _) = get_payment_preimage_hash!(nodes[0]);
-       let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(our_payment_hash, Some(100_000), 7200).unwrap();
+       let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(our_payment_hash, Some(100_000), 7200, None).unwrap();
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
        check_added_monitors!(nodes[0], 1);
 
@@ -6936,13 +7020,13 @@ fn test_announce_disable_channels() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 1, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       create_announced_chan_between_nodes(&nodes, 1, 0);
+       create_announced_chan_between_nodes(&nodes, 0, 1);
 
        // Disconnect peers
-       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+       nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
 
        nodes[0].node.timer_tick_occurred(); // Enabled -> DisabledStaged
        nodes[0].node.timer_tick_occurred(); // DisabledStaged -> Disabled
@@ -6962,10 +7046,10 @@ fn test_announce_disable_channels() {
                }
        }
        // Reconnect peers
-       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: nodes[1].node.init_features(), remote_network_address: None }, true).unwrap();
        let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
        assert_eq!(reestablish_1.len(), 3);
-       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+       nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: nodes[0].node.init_features(), remote_network_address: None }, false).unwrap();
        let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
        assert_eq!(reestablish_2.len(), 3);
 
@@ -7018,11 +7102,11 @@ fn test_bump_penalty_txn_on_revoked_commitment() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
 
        let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
-       let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id())
-               .with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id(), 30)
+               .with_features(nodes[0].node.invoice_features());
        let (route,_, _, _) = get_route_and_payment_hash!(nodes[1], nodes[0], payment_params, 3000000, 30);
        send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
 
@@ -7125,15 +7209,15 @@ fn test_bump_penalty_txn_on_revoked_htlcs() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
        // Lock HTLC in both directions (using a slightly lower CLTV delay to provide timely RBF bumps)
-       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(channelmanager::provided_invoice_features());
-       let scorer = test_utils::TestScorer::with_penalty(0);
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), 50).with_features(nodes[1].node.invoice_features());
+       let scorer = test_utils::TestScorer::new();
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
        let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), None,
                3_000_000, 50, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
        let payment_preimage = send_along_route(&nodes[0], route, &[&nodes[1]], 3_000_000).0;
-       let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id()).with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id(), 50).with_features(nodes[0].node.invoice_features());
        let route = get_route(&nodes[1].node.get_our_node_id(), &payment_params, &nodes[1].network_graph.read_only(), None,
                3_000_000, 50, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
        send_along_route(&nodes[1], route, &[&nodes[0]], 3_000_000);
@@ -7203,8 +7287,8 @@ fn test_bump_penalty_txn_on_revoked_htlcs() {
                assert_ne!(node_txn[0].input[0].previous_output, node_txn[2].input[0].previous_output);
                assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
 
-               assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
-               assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
+               assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
+               assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
 
                // node_txn[3] spends the revoked outputs from the revoked_htlc_txn (which only have one
                // output, checked above).
@@ -7278,7 +7362,7 @@ fn test_bump_penalty_txn_on_remote_commitment() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 3_000_000);
        route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000).0;
 
@@ -7381,13 +7465,14 @@ fn test_counterparty_raa_skip_no_crash() {
        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 channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
+       let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1).2;
 
        let per_commitment_secret;
        let next_per_commitment_point;
        {
-               let mut guard = nodes[0].node.channel_state.lock().unwrap();
-               let keys = guard.by_id.get_mut(&channel_id).unwrap().get_signer();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let mut guard = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let keys = guard.channel_by_id.get_mut(&channel_id).unwrap().get_signer();
 
                const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
 
@@ -7421,7 +7506,7 @@ fn test_bump_txn_sanitize_tracking_maps() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
        // Lock HTLC in both directions
        let (payment_preimage_1, _, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000);
        let (_, payment_hash_2, _) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 9_000_000);
@@ -7470,7 +7555,7 @@ fn test_pending_claimed_htlc_no_balance_underflow() {
        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_with_value(&nodes, 0, 1, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
 
        let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 1_010_000);
        nodes[1].node.claim_funds(payment_preimage);
@@ -7509,7 +7594,7 @@ fn test_channel_conf_timeout() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       let _funding_tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 1_000_000, 100_000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _funding_tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 1_000_000, 100_000);
 
        // The outbound node should wait forever for confirmation:
        // This matches `channel::FUNDING_CONF_DEADLINE_BLOCKS` and BOLT 2's suggested timeout, thus is
@@ -7568,7 +7653,7 @@ fn test_override_0msat_htlc_minimum() {
        let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
        assert_eq!(res.htlc_minimum_msat, 1);
 
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &res);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &res);
        let res = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
        assert_eq!(res.htlc_minimum_msat, 1);
 }
@@ -7605,8 +7690,8 @@ fn test_channel_update_has_correct_htlc_maximum_msat() {
        let channel_value_50_percent_msat = (channel_value_msat as f64 * 0.5) as u64;
        let channel_value_90_percent_msat = (channel_value_msat as f64 * 0.9) as u64;
 
-       let (node_0_chan_update, node_1_chan_update, _, _)  = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value_satoshis, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let (node_2_chan_update, node_3_chan_update, _, _)  = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, channel_value_satoshis, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let (node_0_chan_update, node_1_chan_update, _, _)  = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value_satoshis, 10001);
+       let (node_2_chan_update, node_3_chan_update, _, _)  = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, channel_value_satoshis, 10001);
 
        // Assert that `node[0]`'s `ChannelUpdate` is capped at 50 percent of the `channel_value`, as
        // that's the value of `node[1]`'s `holder_max_htlc_value_in_flight_msat`.
@@ -7637,7 +7722,7 @@ fn test_manually_accept_inbound_channel_request() {
        let temp_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, Some(manually_accept_conf)).unwrap();
        let res = 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(), channelmanager::provided_init_features(), &res);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &res);
 
        // Assert that `nodes[1]` has no `MessageSendEvent::SendAcceptChannel` in `msg_events` before
        // accepting the inbound channel request.
@@ -7687,7 +7772,7 @@ fn test_manually_reject_inbound_channel_request() {
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, Some(manually_accept_conf)).unwrap();
        let res = 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(), channelmanager::provided_init_features(), &res);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &res);
 
        // Assert that `nodes[1]` has no `MessageSendEvent::SendAcceptChannel` in `msg_events` before
        // rejecting the inbound channel request.
@@ -7731,7 +7816,7 @@ fn test_reject_funding_before_inbound_channel_accepted() {
        let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
        let temp_channel_id = res.temporary_channel_id;
 
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &res);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &res);
 
        // Assert that `nodes[1]` has no `MessageSendEvent::SendAcceptChannel` in the `msg_events`.
        assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
@@ -7745,11 +7830,12 @@ fn test_reject_funding_before_inbound_channel_accepted() {
        // `handle_accept_channel`, which is required in order for `create_funding_transaction` to
        // succeed when `nodes[0]` is passed to it.
        let accept_chan_msg = {
-               let mut lock;
-               let channel = get_channel_ref!(&nodes[1], lock, temp_channel_id);
+               let mut node_1_per_peer_lock;
+               let mut node_1_peer_state_lock;
+               let channel =  get_channel_ref!(&nodes[1], nodes[0], node_1_per_peer_lock, node_1_peer_state_lock, temp_channel_id);
                channel.get_accept_channel_message()
        };
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &accept_chan_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_chan_msg);
 
        let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
 
@@ -7787,7 +7873,7 @@ fn test_can_not_accept_inbound_channel_twice() {
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, Some(manually_accept_conf)).unwrap();
        let res = 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(), channelmanager::provided_init_features(), &res);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &res);
 
        // Assert that `nodes[1]` has no `MessageSendEvent::SendAcceptChannel` in `msg_events` before
        // accepting the inbound channel request.
@@ -7832,7 +7918,7 @@ fn test_can_not_accept_unknown_inbound_channel() {
        let api_res = nodes[0].node.accept_inbound_channel(&unknown_channel_id, &nodes[1].node.get_our_node_id(), 0);
        match api_res {
                Err(APIError::ChannelUnavailable { err }) => {
-                       assert_eq!(err, "Can't accept a channel that doesn't exist");
+                       assert_eq!(err, format!("Channel with id {} not found for the passed counterparty node_id {}", log_bytes!(unknown_channel_id), nodes[1].node.get_our_node_id()));
                },
                Ok(_) => panic!("It shouldn't be possible to accept an unkown channel"),
                Err(_) => panic!("Unexpected Error"),
@@ -7847,10 +7933,10 @@ fn test_simple_mpp() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
-       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
-       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
-       let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1).0.contents.short_channel_id;
+       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2).0.contents.short_channel_id;
+       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3).0.contents.short_channel_id;
+       let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3).0.contents.short_channel_id;
 
        let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(&nodes[0], nodes[3], 100000);
        let path = route.paths[0].clone();
@@ -7873,10 +7959,10 @@ fn test_preimage_storage() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       create_announced_chan_between_nodes(&nodes, 0, 1).0.contents.short_channel_id;
 
        {
-               let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 7200).unwrap();
+               let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 7200, None).unwrap();
                let (route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
                nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
                check_added_monitors!(nodes[0], 1);
@@ -7913,7 +7999,7 @@ fn test_secret_timeout() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       create_announced_chan_between_nodes(&nodes, 0, 1).0.contents.short_channel_id;
 
        let (payment_hash, payment_secret_1) = nodes[1].node.create_inbound_payment_legacy(Some(100_000), 2).unwrap();
 
@@ -7978,11 +8064,11 @@ fn test_bad_secret_hash() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+       create_announced_chan_between_nodes(&nodes, 0, 1).0.contents.short_channel_id;
 
        let random_payment_hash = PaymentHash([42; 32]);
        let random_payment_secret = PaymentSecret([43; 32]);
-       let (our_payment_hash, our_payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 2).unwrap();
+       let (our_payment_hash, our_payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 2, None).unwrap();
        let (route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
 
        // All the below cases should end up being handled exactly identically, so we macro the
@@ -8050,7 +8136,7 @@ fn test_update_err_monitor_lockdown() {
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channel
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
        let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
 
        // Rebalance the network to generate htlc in the two directions
@@ -8064,12 +8150,13 @@ fn test_update_err_monitor_lockdown() {
        let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
        let persister = test_utils::TestPersister::new();
        let watchtower = {
-               let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
-               let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-                               &mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
-               assert!(new_monitor == *monitor);
+               let new_monitor = {
+                       let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
+                       let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                                       &mut io::Cursor::new(&monitor.encode()), (nodes[0].keys_manager, nodes[0].keys_manager)).unwrap().1;
+                       assert!(new_monitor == *monitor);
+                       new_monitor
+               };
                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_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
                watchtower
@@ -8089,12 +8176,15 @@ fn test_update_err_monitor_lockdown() {
        let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        assert_eq!(updates.update_fulfill_htlcs.len(), 1);
        nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
-       if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
-               if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
-                       assert_eq!(watchtower.chain_monitor.update_channel(outpoint, update.clone()), ChannelMonitorUpdateStatus::PermanentFailure);
-                       assert_eq!(nodes[0].chain_monitor.update_channel(outpoint, update), ChannelMonitorUpdateStatus::Completed);
+       {
+               let mut node_0_per_peer_lock;
+               let mut node_0_peer_state_lock;
+               let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan_1.2);
+               if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
+                       assert_eq!(watchtower.chain_monitor.update_channel(outpoint, &update), ChannelMonitorUpdateStatus::PermanentFailure);
+                       assert_eq!(nodes[0].chain_monitor.update_channel(outpoint, &update), ChannelMonitorUpdateStatus::Completed);
                } else { assert!(false); }
-       } else { assert!(false); };
+       }
        // Our local monitor is in-sync and hasn't processed yet timeout
        check_added_monitors!(nodes[0], 1);
        let events = nodes[0].node.get_and_clear_pending_events();
@@ -8114,7 +8204,7 @@ fn test_concurrent_monitor_claim() {
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        // Create some initial channel
-       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
        let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
 
        // Rebalance the network to generate htlc in the two directions
@@ -8128,12 +8218,13 @@ fn test_concurrent_monitor_claim() {
        let logger = test_utils::TestLogger::with_id(format!("node {}", "Alice"));
        let persister = test_utils::TestPersister::new();
        let watchtower_alice = {
-               let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
-               let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-                               &mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
-               assert!(new_monitor == *monitor);
+               let new_monitor = {
+                       let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
+                       let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                                       &mut io::Cursor::new(&monitor.encode()), (nodes[0].keys_manager, nodes[0].keys_manager)).unwrap().1;
+                       assert!(new_monitor == *monitor);
+                       new_monitor
+               };
                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_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
                watchtower
@@ -8157,12 +8248,13 @@ fn test_concurrent_monitor_claim() {
        let logger = test_utils::TestLogger::with_id(format!("node {}", "Bob"));
        let persister = test_utils::TestPersister::new();
        let watchtower_bob = {
-               let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
-               let mut w = test_utils::TestVecWriter(Vec::new());
-               monitor.write(&mut w).unwrap();
-               let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-                               &mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
-               assert!(new_monitor == *monitor);
+               let new_monitor = {
+                       let monitor = nodes[0].chain_monitor.chain_monitor.get_monitor(outpoint).unwrap();
+                       let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
+                                       &mut io::Cursor::new(&monitor.encode()), (nodes[0].keys_manager, nodes[0].keys_manager)).unwrap().1;
+                       assert!(new_monitor == *monitor);
+                       new_monitor
+               };
                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_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
                watchtower
@@ -8180,14 +8272,17 @@ fn test_concurrent_monitor_claim() {
        let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
        assert_eq!(updates.update_add_htlcs.len(), 1);
        nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &updates.update_add_htlcs[0]);
-       if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
-               if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
+       {
+               let mut node_0_per_peer_lock;
+               let mut node_0_peer_state_lock;
+               let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan_1.2);
+               if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
                        // Watchtower Alice should already have seen the block and reject the update
-                       assert_eq!(watchtower_alice.chain_monitor.update_channel(outpoint, update.clone()), ChannelMonitorUpdateStatus::PermanentFailure);
-                       assert_eq!(watchtower_bob.chain_monitor.update_channel(outpoint, update.clone()), ChannelMonitorUpdateStatus::Completed);
-                       assert_eq!(nodes[0].chain_monitor.update_channel(outpoint, update), ChannelMonitorUpdateStatus::Completed);
+                       assert_eq!(watchtower_alice.chain_monitor.update_channel(outpoint, &update), ChannelMonitorUpdateStatus::PermanentFailure);
+                       assert_eq!(watchtower_bob.chain_monitor.update_channel(outpoint, &update), ChannelMonitorUpdateStatus::Completed);
+                       assert_eq!(nodes[0].chain_monitor.update_channel(outpoint, &update), ChannelMonitorUpdateStatus::Completed);
                } else { assert!(false); }
-       } else { assert!(false); };
+       }
        // Our local monitor is in-sync and hasn't processed yet timeout
        check_added_monitors!(nodes[0], 1);
 
@@ -8235,9 +8330,9 @@ fn test_pre_lockin_no_chan_closed_update() {
        // 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(), channelmanager::provided_init_features(), &open_chan_msg);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &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(), channelmanager::provided_init_features(), &accept_chan_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_chan_msg);
 
        // Move the first channel through the funding flow...
        let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
@@ -8267,7 +8362,7 @@ fn test_htlc_no_detection() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
 
        send_payment(&nodes[0], &vec!(&nodes[1])[..], 1_000_000);
        let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 2_000_000);
@@ -8322,8 +8417,8 @@ fn do_test_onchain_htlc_settlement_after_close(broadcast_alice: bool, go_onchain
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_ab = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
+       create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001);
 
        // Steps (1) and (2):
        // Send an HTLC Alice --> Bob --> Carol, but Carol doesn't settle the HTLC back.
@@ -8487,6 +8582,56 @@ fn test_onchain_htlc_settlement_after_close() {
        do_test_onchain_htlc_settlement_after_close(false, false);
 }
 
+#[test]
+fn test_duplicate_temporary_channel_id_from_different_peers() {
+       // Tests that we can accept two different `OpenChannel` requests with the same
+       // `temporary_channel_id`, as long as they are from different peers.
+       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 an first channel channel
+       nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
+       let mut open_chan_msg_chan_1_0 = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
+
+       // Create an second channel
+       nodes[2].node.create_channel(nodes[0].node.get_our_node_id(), 100000, 10001, 43, None).unwrap();
+       let mut open_chan_msg_chan_2_0 = get_event_msg!(nodes[2], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
+
+       // Modify the `OpenChannel` from `nodes[2]` to `nodes[0]` to ensure that it uses the same
+       // `temporary_channel_id` as the `OpenChannel` from nodes[1] to nodes[0].
+       open_chan_msg_chan_2_0.temporary_channel_id = open_chan_msg_chan_1_0.temporary_channel_id;
+
+       // Assert that `nodes[0]` can accept both `OpenChannel` requests, even though they use the same
+       // `temporary_channel_id` as they are from different peers.
+       nodes[0].node.handle_open_channel(&nodes[1].node.get_our_node_id(), &open_chan_msg_chan_1_0);
+       {
+               let events = nodes[0].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match &events[0] {
+                       MessageSendEvent::SendAcceptChannel { node_id, msg } => {
+                               assert_eq!(node_id, &nodes[1].node.get_our_node_id());
+                               assert_eq!(msg.temporary_channel_id, open_chan_msg_chan_1_0.temporary_channel_id);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+
+       nodes[0].node.handle_open_channel(&nodes[2].node.get_our_node_id(), &open_chan_msg_chan_2_0);
+       {
+               let events = nodes[0].node.get_and_clear_pending_msg_events();
+               assert_eq!(events.len(), 1);
+               match &events[0] {
+                       MessageSendEvent::SendAcceptChannel { node_id, msg } => {
+                               assert_eq!(node_id, &nodes[2].node.get_our_node_id());
+                               assert_eq!(msg.temporary_channel_id, open_chan_msg_chan_1_0.temporary_channel_id);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+       }
+}
+
 #[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
@@ -8504,12 +8649,12 @@ fn test_duplicate_chan_id() {
        // 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(), channelmanager::provided_init_features(), &open_chan_msg);
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &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(), channelmanager::provided_init_features(), &open_chan_msg);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_msg);
        {
                let events = nodes[1].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
@@ -8552,7 +8697,7 @@ fn test_duplicate_chan_id() {
        // 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(), channelmanager::provided_init_features(), &open_chan_msg);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_msg);
        {
                let events = nodes[1].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
@@ -8570,25 +8715,26 @@ fn test_duplicate_chan_id() {
        // 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(), channelmanager::provided_init_features(), &open_chan_2_msg);
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_2_msg);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
        create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42); // Get and check the FundingGenerationReady event
 
        let funding_created = {
-               let mut a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let mut a_peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
                // Once we call `get_outbound_funding_created` the channel has a duplicate channel_id as
                // another channel in the ChannelManager - an invalid state. Thus, we'd panic later when we
                // try to create another channel. Instead, we drop the channel entirely here (leaving the
                // channelmanager in a possibly nonsense state instead).
-               let mut as_chan = a_channel_lock.by_id.remove(&open_chan_2_msg.temporary_channel_id).unwrap();
+               let mut as_chan = a_peer_state.channel_by_id.remove(&open_chan_2_msg.temporary_channel_id).unwrap();
                let logger = test_utils::TestLogger::new();
                as_chan.get_outbound_funding_created(tx.clone(), 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);
+       // At this point we'll look up if the channel_id is present and immediately fail the channel
+       // without trying to persist the `ChannelMonitor`.
+       check_added_monitors!(nodes[1], 0);
 
        // ...still, nodes[1] will reject the duplicate channel.
        {
@@ -8640,9 +8786,9 @@ fn test_error_chans_closed() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_3 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
+       let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
+       let chan_3 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
 
        assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
        assert_eq!(nodes[1].node.list_usable_channels().len(), 2);
@@ -8663,7 +8809,7 @@ fn test_error_chans_closed() {
        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, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan_4 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
        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);
        check_closed_event!(nodes[0], 2, ClosureReason::CounterpartyForceClosed { peer_msg: "ERR".to_string() });
@@ -8682,13 +8828,11 @@ fn test_error_chans_closed() {
                _ => 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.
+       // peer_disconnected.
        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);
+       nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
        assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
        assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
 }
@@ -8711,8 +8855,8 @@ fn test_invalid_funding_tx() {
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
        nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, 10_000, 42, None).unwrap();
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
-       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
 
        let (temporary_channel_id, mut tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100_000, 42);
 
@@ -8801,11 +8945,11 @@ fn do_test_tx_confirmed_skipping_blocks_immediate_broadcast(test_height_before_t
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
        *nodes[0].connect_style.borrow_mut() = ConnectStyle::BestBlockFirstSkippingBlocks;
 
-       create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let (chan_announce, _, channel_id, _) = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes(&nodes, 0, 1);
+       let (chan_announce, _, channel_id, _) = create_announced_chan_between_nodes(&nodes, 1, 2);
        let (_, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
-       nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
-       nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+       nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id());
+       nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
 
        nodes[1].node.force_close_broadcasting_latest_txn(&channel_id, &nodes[2].node.get_our_node_id()).unwrap();
        check_closed_broadcast!(nodes[1], true);
@@ -8868,10 +9012,10 @@ fn do_test_dup_htlc_second_rejected(test_for_second_fail_panic: bool) {
        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, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
 
-       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id())
-               .with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), TEST_FINAL_CLTV)
+               .with_features(nodes[1].node.invoice_features());
        let route = get_route!(nodes[0], payment_params, 10_000, TEST_FINAL_CLTV).unwrap();
 
        let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(&nodes[1]);
@@ -8926,9 +9070,11 @@ fn do_test_dup_htlc_second_rejected(test_for_second_fail_panic: bool) {
                commitment_signed_dance!(nodes[0], nodes[1], fail_updates_1.commitment_signed, false);
 
                let failure_events = nodes[0].node.get_and_clear_pending_events();
-               assert_eq!(failure_events.len(), 2);
+               assert_eq!(failure_events.len(), 4);
                if let Event::PaymentPathFailed { .. } = failure_events[0] {} else { panic!(); }
-               if let Event::PaymentPathFailed { .. } = failure_events[1] {} else { panic!(); }
+               if let Event::PaymentFailed { .. } = failure_events[1] {} else { panic!(); }
+               if let Event::PaymentPathFailed { .. } = failure_events[2] {} else { panic!(); }
+               if let Event::PaymentFailed { .. } = failure_events[3] {} else { panic!(); }
        } else {
                // Let the second HTLC fail and claim the first
                expect_pending_htlcs_forwardable_and_htlc_handling_failed_ignore!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash: our_payment_hash }]);
@@ -8939,7 +9085,7 @@ fn do_test_dup_htlc_second_rejected(test_for_second_fail_panic: bool) {
                nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_updates_1.update_fail_htlcs[0]);
                commitment_signed_dance!(nodes[0], nodes[1], fail_updates_1.commitment_signed, false);
 
-               expect_payment_failed_conditions(&nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
+               expect_payment_failed_conditions(&nodes[0], our_payment_hash, true, PaymentFailedConditions::new());
 
                claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage);
        }
@@ -8970,13 +9116,13 @@ fn test_inconsistent_mpp_params() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let chan_2_3 =create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0);
+       let chan_2_3 =create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0);
 
-       let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id())
-               .with_features(channelmanager::provided_invoice_features());
+       let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id(), TEST_FINAL_CLTV)
+               .with_features(nodes[3].node.invoice_features());
        let mut route = get_route!(nodes[0], payment_params, 15_000_000, TEST_FINAL_CLTV).unwrap();
        assert_eq!(route.paths.len(), 2);
        route.paths.sort_by(|path_a, _| {
@@ -8998,20 +9144,20 @@ fn test_inconsistent_mpp_params() {
                dup_route.paths.push(route.paths[1].clone());
                nodes[0].node.test_add_new_pending_payment(our_payment_hash, Some(our_payment_secret), payment_id, &dup_route).unwrap()
        };
-       {
-               nodes[0].node.send_payment_along_path(&route.paths[0], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 15_000_000, cur_height, payment_id, &None, session_privs[0]).unwrap();
-               check_added_monitors!(nodes[0], 1);
+       nodes[0].node.test_send_payment_along_path(&route.paths[0], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 15_000_000, cur_height, payment_id, &None, session_privs[0]).unwrap();
+       check_added_monitors!(nodes[0], 1);
 
+       {
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
                pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 15_000_000, our_payment_hash, Some(our_payment_secret), events.pop().unwrap(), false, None);
        }
        assert!(nodes[3].node.get_and_clear_pending_events().is_empty());
 
-       {
-               nodes[0].node.send_payment_along_path(&route.paths[1], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 14_000_000, cur_height, payment_id, &None, session_privs[1]).unwrap();
-               check_added_monitors!(nodes[0], 1);
+       nodes[0].node.test_send_payment_along_path(&route.paths[1], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 14_000_000, cur_height, payment_id, &None, session_privs[1]).unwrap();
+       check_added_monitors!(nodes[0], 1);
 
+       {
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
                let payment_event = SendEvent::from_event(events.pop().unwrap());
@@ -9054,14 +9200,34 @@ fn test_inconsistent_mpp_params() {
 
        expect_payment_failed_conditions(&nodes[0], our_payment_hash, true, PaymentFailedConditions::new().mpp_parts_remain());
 
-       nodes[0].node.send_payment_along_path(&route.paths[1], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 15_000_000, cur_height, payment_id, &None, session_privs[2]).unwrap();
+       nodes[0].node.test_send_payment_along_path(&route.paths[1], &payment_params_opt, &our_payment_hash, &Some(our_payment_secret), 15_000_000, cur_height, payment_id, &None, session_privs[2]).unwrap();
        check_added_monitors!(nodes[0], 1);
 
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 1);
        pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 15_000_000, our_payment_hash, Some(our_payment_secret), events.pop().unwrap(), true, None);
 
-       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, our_payment_preimage);
+       do_claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, our_payment_preimage);
+       let events = nodes[0].node.get_and_clear_pending_events();
+       assert_eq!(events.len(), 3);
+       match events[0] {
+               Event::PaymentSent { payment_hash, .. } => { // The payment was abandoned earlier, so the fee paid will be None
+                       assert_eq!(payment_hash, our_payment_hash);
+               },
+               _ => panic!("Unexpected event")
+       }
+       match events[1] {
+               Event::PaymentPathSuccessful { payment_hash, .. } => {
+                       assert_eq!(payment_hash.unwrap(), our_payment_hash);
+               },
+               _ => panic!("Unexpected event")
+       }
+       match events[2] {
+               Event::PaymentPathSuccessful { payment_hash, .. } => {
+                       assert_eq!(payment_hash.unwrap(), our_payment_hash);
+               },
+               _ => panic!("Unexpected event")
+       }
 }
 
 #[test]
@@ -9071,16 +9237,15 @@ fn test_keysend_payments_to_public_node() {
        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, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       let network_graph = nodes[0].network_graph;
+       let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
+       let network_graph = nodes[0].network_graph.clone();
        let payer_pubkey = nodes[0].node.get_our_node_id();
        let payee_pubkey = nodes[1].node.get_our_node_id();
        let route_params = RouteParameters {
-               payment_params: PaymentParameters::for_keysend(payee_pubkey),
+               payment_params: PaymentParameters::for_keysend(payee_pubkey, 40),
                final_value_msat: 10000,
-               final_cltv_expiry_delta: 40,
        };
-       let scorer = test_utils::TestScorer::with_penalty(0);
+       let scorer = test_utils::TestScorer::new();
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
        let route = find_route(&payer_pubkey, &route_params, &network_graph, None, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
 
@@ -9104,18 +9269,15 @@ fn test_keysend_payments_to_private_node() {
 
        let payer_pubkey = nodes[0].node.get_our_node_id();
        let payee_pubkey = nodes[1].node.get_our_node_id();
-       nodes[0].node.peer_connected(&payee_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
-       nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
 
-       let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       let _chan = create_chan_between_nodes(&nodes[0], &nodes[1]);
        let route_params = RouteParameters {
-               payment_params: PaymentParameters::for_keysend(payee_pubkey),
+               payment_params: PaymentParameters::for_keysend(payee_pubkey, 40),
                final_value_msat: 10000,
-               final_cltv_expiry_delta: 40,
        };
-       let network_graph = nodes[0].network_graph;
+       let network_graph = nodes[0].network_graph.clone();
        let first_hops = nodes[0].node.list_usable_channels();
-       let scorer = test_utils::TestScorer::with_penalty(0);
+       let scorer = test_utils::TestScorer::new();
        let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
        let route = find_route(
                &payer_pubkey, &route_params, &network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
@@ -9144,10 +9306,10 @@ fn test_double_partial_claim() {
        let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
        let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
 
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-       create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0, channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 100_000, 0);
+       create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 100_000, 0);
 
        let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[3], 15_000_000);
        assert_eq!(route.paths.len(), 2);
@@ -9179,7 +9341,8 @@ fn test_double_partial_claim() {
 
        let mut events = nodes[0].node.get_and_clear_pending_msg_events();
        assert_eq!(events.len(), 2);
-       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), events.drain(..).next().unwrap(), false, None);
+       let node_1_msgs = remove_first_msg_event_to_node(&nodes[1].node.get_our_node_id(), &mut events);
+       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 15_000_000, payment_hash, Some(payment_secret), node_1_msgs, false, None);
 
        // At this point nodes[3] has received one half of the payment, and the user goes to handle
        // that PaymentClaimable event they got hours ago and never handled...we should refuse to claim.
@@ -9226,18 +9389,19 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
        if on_holder_tx {
                open_channel.dust_limit_satoshis = 546;
        }
-       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &open_channel);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
        let mut accept_channel = 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(), channelmanager::provided_init_features(), &accept_channel);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
 
        let opt_anchors = false;
 
        let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 1_000_000, 42);
 
        if on_holder_tx {
-               if let Some(mut chan) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&temporary_channel_id) {
-                       chan.holder_dust_limit_satoshis = 546;
-               }
+               let mut node_0_per_peer_lock;
+               let mut node_0_peer_state_lock;
+               let mut chan = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, temporary_channel_id);
+               chan.holder_dust_limit_satoshis = 546;
        }
 
        nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
@@ -9252,8 +9416,9 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
        update_nodes_with_chan_announce(&nodes, 0, 1, &announcement, &as_update, &bs_update);
 
        let dust_buffer_feerate = {
-               let chan_lock = nodes[0].node.channel_state.lock().unwrap();
-               let chan = chan_lock.by_id.get(&channel_id).unwrap();
+               let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
+               let chan_lock = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
+               let chan = chan_lock.channel_by_id.get(&channel_id).unwrap();
                chan.get_dust_buffer_feerate(None) as u64
        };
        let dust_outbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_timeout_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
@@ -9371,9 +9536,9 @@ fn test_non_final_funding_tx() {
 
        let temp_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, 0, 42, None).unwrap();
        let open_channel_message = 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(), channelmanager::provided_init_features(), &open_channel_message);
+       nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel_message);
        let accept_channel_message = 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(), channelmanager::provided_init_features(), &accept_channel_message);
+       nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel_message);
 
        let best_height = nodes[0].node.best_block.read().unwrap().height();
 
@@ -9414,7 +9579,7 @@ fn accept_busted_but_better_fee() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
-       create_chan_between_nodes(&nodes[0], &nodes[1], channelmanager::provided_init_features(), channelmanager::provided_init_features());
+       create_chan_between_nodes(&nodes[0], &nodes[1]);
 
        // Set nodes[1] to expect 5,000 sat/kW.
        {
@@ -9481,3 +9646,60 @@ fn accept_busted_but_better_fee() {
                _ => panic!("Unexpected event"),
        };
 }
+
+fn do_payment_with_custom_min_final_cltv_expiry(valid_delta: bool, use_user_hash: bool) {
+       let mut 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 min_final_cltv_expiry_delta = 120;
+       let final_cltv_expiry_delta = if valid_delta { min_final_cltv_expiry_delta + 2 } else {
+               min_final_cltv_expiry_delta - 2 };
+       let recv_value = 100_000;
+
+       create_chan_between_nodes(&nodes[0], &nodes[1]);
+
+       let payment_parameters = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), final_cltv_expiry_delta as u32);
+       let (payment_hash, payment_preimage, payment_secret) = if use_user_hash {
+               let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[1],
+                       Some(recv_value), Some(min_final_cltv_expiry_delta));
+               (payment_hash, payment_preimage, payment_secret)
+       } else {
+               let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(recv_value), 7200, Some(min_final_cltv_expiry_delta)).unwrap();
+               (payment_hash, nodes[1].node.get_payment_preimage(payment_hash, payment_secret).unwrap(), payment_secret)
+       };
+       let route = get_route!(nodes[0], payment_parameters, recv_value, final_cltv_expiry_delta as u32).unwrap();
+       nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       let mut payment_event = SendEvent::from_event(events.pop().unwrap());
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
+       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
+       expect_pending_htlcs_forwardable!(nodes[1]);
+
+       if valid_delta {
+               expect_payment_claimable!(nodes[1], payment_hash, payment_secret, recv_value, if use_user_hash {
+                       None } else { Some(payment_preimage) }, nodes[1].node.get_our_node_id());
+
+               claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
+       } else {
+               expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash }]);
+
+               check_added_monitors!(nodes[1], 1);
+
+               let fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+               nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_updates.update_fail_htlcs[0]);
+               commitment_signed_dance!(nodes[0], nodes[1], fail_updates.commitment_signed, false, true);
+
+               expect_payment_failed!(nodes[0], payment_hash, true);
+       }
+}
+
+#[test]
+fn test_payment_with_custom_min_cltv_expiry_delta() {
+       do_payment_with_custom_min_final_cltv_expiry(false, false);
+       do_payment_with_custom_min_final_cltv_expiry(false, true);
+       do_payment_with_custom_min_final_cltv_expiry(true, false);
+       do_payment_with_custom_min_final_cltv_expiry(true, true);
+}