Merge pull request #1283 from TheBlueMatt/2022-01-correct-req-feature-handling
[rust-lightning] / lightning / src / ln / functional_tests.rs
index af54f9f8d29d7fbfa8eab19164c45d5886473949..b896e0dbe8fd5388f045d8e1bfdf020bb791bdf8 100644 (file)
@@ -18,13 +18,13 @@ use chain::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PER
 use chain::transaction::OutPoint;
 use chain::keysinterface::BaseSign;
 use ln::{PaymentPreimage, PaymentSecret, PaymentHash};
-use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC, CONCURRENT_INBOUND_HTLC_FEE_BUFFER, MIN_AFFORDABLE_HTLC_COUNT};
-use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, PaymentId, RAACommitmentOrder, PaymentSendFailure, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA};
+use 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 ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, PaymentId, RAACommitmentOrder, PaymentSendFailure, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA, PAYMENT_EXPIRY_BLOCKS };
 use ln::channel::{Channel, ChannelError};
 use ln::{chan_utils, onion_utils};
-use ln::chan_utils::{HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, HTLCOutputInCommitment};
-use routing::network_graph::{NetworkUpdate, RoutingFees};
-use routing::router::{Payee, Route, RouteHop, RouteHint, RouteHintHop, RouteParameters, find_route, get_route};
+use ln::chan_utils::{htlc_success_tx_weight, htlc_timeout_tx_weight, HTLCOutputInCommitment};
+use routing::network_graph::RoutingFees;
+use routing::router::{PaymentParameters, Route, RouteHop, RouteHint, RouteHintHop, RouteParameters, find_route, get_route};
 use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures};
 use ln::msgs;
 use ln::msgs::{ChannelMessageHandler, RoutingMessageHandler, ErrorAction};
@@ -42,9 +42,6 @@ use bitcoin::blockdata::opcodes;
 use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::network::constants::Network;
 
-use bitcoin::hashes::sha256::Hash as Sha256;
-use bitcoin::hashes::Hash;
-
 use bitcoin::secp256k1::Secp256k1;
 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
 
@@ -108,8 +105,6 @@ fn test_insane_channel_opens() {
 
        insane_open_helper("Peer never wants payout outputs?", |mut msg| { msg.dust_limit_satoshis = msg.funding_satoshis + 1 ; msg });
 
-       insane_open_helper(r"Bogus; channel reserve \(\d+\) is less than dust limit \(\d+\)", |mut msg| { msg.dust_limit_satoshis = msg.channel_reserve_satoshis + 1; msg });
-
        insane_open_helper(r"Minimum htlc value \(\d+\) was larger than full channel value \(\d+\)", |mut msg| { msg.htlc_minimum_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000; msg });
 
        insane_open_helper("They wanted our payments to be delayed by a needlessly long period", |mut msg| { msg.to_self_delay = MAX_LOCAL_BREAKDOWN_TIMEOUT + 1; msg });
@@ -119,6 +114,68 @@ fn test_insane_channel_opens() {
        insane_open_helper("max_accepted_htlcs was 484. It must not be larger than 483", |mut msg| { msg.max_accepted_htlcs = 484; msg });
 }
 
+fn do_test_counterparty_no_reserve(send_from_initiator: bool) {
+       // A peer providing a channel_reserve_satoshis of 0 (or less than our dust limit) is insecure,
+       // but only for them. Because some LSPs do it with some level of trust of the clients (for a
+       // substantial UX improvement), we explicitly allow it. Because it's unlikely to happen often
+       // in normal testing, we test it explicitly here.
+       let chanmon_cfgs = create_chanmon_cfgs(2);
+       let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+       let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+       // Have node0 initiate a channel to node1 with aforementioned parameters
+       let mut push_amt = 100_000_000;
+       let feerate_per_kw = 253;
+       let opt_anchors = false;
+       push_amt -= feerate_per_kw as u64 * (commitment_tx_base_weight(opt_anchors) + 4 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000 * 1000;
+       push_amt -= Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(100_000) * 1000;
+
+       let temp_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, if send_from_initiator { 0 } else { push_amt }, 42, None).unwrap();
+       let mut open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+       if !send_from_initiator {
+               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(), InitFeatures::known(), &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());
+       if send_from_initiator {
+               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(), InitFeatures::known(), &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);
+               chan.holder_selected_channel_reserve_satoshis = 0;
+               chan.holder_max_htlc_value_in_flight_msat = 100_000_000;
+       }
+
+       let funding_tx = sign_funding_transaction(&nodes[0], &nodes[1], 100_000, temp_channel_id);
+       let funding_msgs = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &funding_tx);
+       create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_msgs.0);
+
+       // nodes[0] should now be able to send the full balance to nodes[1], violating nodes[1]'s
+       // security model if it ever tries to send funds back to nodes[0] (but that's not our problem).
+       if send_from_initiator {
+               send_payment(&nodes[0], &[&nodes[1]], 100_000_000
+                       // Note that for outbound channels we have to consider the commitment tx fee and the
+                       // "fee spike buffer", which is currently a multiple of the total commitment tx fee as
+                       // well as an additional HTLC.
+                       - FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE * commit_tx_fee_msat(feerate_per_kw, 2, opt_anchors));
+       } else {
+               send_payment(&nodes[1], &[&nodes[0]], push_amt);
+       }
+}
+
+#[test]
+fn test_counterparty_no_reserve() {
+       do_test_counterparty_no_reserve(true);
+       do_test_counterparty_no_reserve(false);
+}
+
 #[test]
 fn test_async_inbound_update_fee() {
        let chanmon_cfgs = create_chanmon_cfgs(2);
@@ -591,12 +648,14 @@ fn test_update_fee_that_funder_cannot_afford() {
        let secp_ctx = Secp256k1::new();
        let bs_channel_reserve_sats = Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(channel_value);
 
+       let opt_anchors = false;
+
        // Calculate the maximum feerate that A can afford. Note that we don't send an update_fee
        // CONCURRENT_INBOUND_HTLC_FEE_BUFFER HTLCs before actually running out of local balance, so we
        // calculate two different feerates here - the expected local limit as well as the expected
        // remote limit.
-       let feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / (COMMITMENT_TX_BASE_WEIGHT + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC)) as u32;
-       let non_buffer_feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / COMMITMENT_TX_BASE_WEIGHT) as u32;
+       let feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / (commitment_tx_base_weight(opt_anchors) + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC)) as u32;
+       let non_buffer_feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / commitment_tx_base_weight(opt_anchors)) as u32;
        {
                let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
                *feerate_lock = feerate;
@@ -615,7 +674,7 @@ fn test_update_fee_that_funder_cannot_afford() {
 
                //We made sure neither party's funds are below the dust limit and there are no HTLCs here
                assert_eq!(commitment_tx.output.len(), 2);
-               let total_fee: u64 = commit_tx_fee_msat(feerate, 0) / 1000;
+               let total_fee: u64 = commit_tx_fee_msat(feerate, 0, opt_anchors) / 1000;
                let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
                actual_fee = channel_value - actual_fee;
                assert_eq!(total_fee, actual_fee);
@@ -664,14 +723,14 @@ fn test_update_fee_that_funder_cannot_afford() {
                let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
                        INITIAL_COMMITMENT_NUMBER - 1,
                        push_sats,
-                       channel_value - push_sats - commit_tx_fee_msat(non_buffer_feerate + 4, 0) / 1000,
-                       false, local_funding, remote_funding,
+                       channel_value - push_sats - commit_tx_fee_msat(non_buffer_feerate + 4, 0, opt_anchors) / 1000,
+                       opt_anchors, local_funding, remote_funding,
                        commit_tx_keys.clone(),
                        non_buffer_feerate + 4,
                        &mut htlcs,
                        &local_chan.channel_transaction_parameters.as_counterparty_broadcastable()
                );
-               local_chan_signer.sign_counterparty_commitment(&commitment_tx, &secp_ctx).unwrap()
+               local_chan_signer.sign_counterparty_commitment(&commitment_tx, Vec::new(), &secp_ctx).unwrap()
        };
 
        let commit_signed_msg = msgs::CommitmentSigned {
@@ -978,7 +1037,7 @@ fn fake_network_test() {
        });
        hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
        hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
-       let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops], payee: None }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
+       let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops], payment_params: None }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
 
        let mut hops = Vec::with_capacity(3);
        hops.push(RouteHop {
@@ -1007,7 +1066,7 @@ fn fake_network_test() {
        });
        hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
        hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
-       let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops], payee: None }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
+       let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops], payment_params: None }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
 
        // Claim the rebalances...
        fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
@@ -1293,7 +1352,7 @@ fn test_basic_channel_reserve() {
        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);
+       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 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)).err().unwrap();
@@ -1401,13 +1460,13 @@ fn test_fee_spike_violation_fails_htlc() {
                        commitment_number,
                        95000,
                        local_chan_balance,
-                       false, local_funding, remote_funding,
+                       local_chan.opt_anchors(), local_funding, remote_funding,
                        commit_tx_keys.clone(),
                        feerate_per_kw,
                        &mut vec![(accepted_htlc_info, ())],
                        &local_chan.channel_transaction_parameters.as_counterparty_broadcastable()
                );
-               local_chan_signer.sign_counterparty_commitment(&commitment_tx, &secp_ctx).unwrap()
+               local_chan_signer.sign_counterparty_commitment(&commitment_tx, Vec::new(), &secp_ctx).unwrap()
        };
 
        let commit_signed_msg = msgs::CommitmentSigned {
@@ -1456,8 +1515,10 @@ fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
+       let opt_anchors = false;
+
        let mut push_amt = 100_000_000;
-       push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64);
+       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) * 1000;
 
        let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt, InitFeatures::known(), InitFeatures::known());
@@ -1483,11 +1544,13 @@ fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
+       let opt_anchors = false;
+
        // Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
        // channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
        // transaction fee with 0 HTLCs (183 sats)).
        let mut push_amt = 100_000_000;
-       push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64);
+       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) * 1000;
        let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt, InitFeatures::known(), InitFeatures::known());
 
@@ -1534,16 +1597,18 @@ fn test_chan_reserve_dust_inbound_htlcs_outbound_chan() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
+       let opt_anchors = false;
+
        // Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
        // channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
        // transaction fee with 0 HTLCs (183 sats)).
        let mut push_amt = 100_000_000;
-       push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64);
+       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) * 1000;
        create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, push_amt, InitFeatures::known(), InitFeatures::known());
 
        let dust_amt = crate::ln::channel::MIN_CHAN_DUST_LIMIT_SATOSHIS * 1000
-               + feerate_per_kw as u64 * HTLC_SUCCESS_TX_WEIGHT / 1000 * 1000 - 1;
+               + feerate_per_kw as u64 * htlc_success_tx_weight(opt_anchors) / 1000 * 1000 - 1;
        // In the previous code, routing this dust payment would cause nodes[0] to perceive a channel
        // reserve violation even though it's a dust HTLC and therefore shouldn't count towards the
        // commitment transaction fee.
@@ -1570,10 +1635,12 @@ fn test_chan_init_feerate_unaffordability() {
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
        let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 
+       let opt_anchors = false;
+
        // Set the push_msat amount such that nodes[0] will not be able to afford to add even a single
        // HTLC.
        let mut push_amt = 100_000_000;
-       push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64);
+       push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
        assert_eq!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, push_amt + 1, 42, None).unwrap_err(),
                APIError::APIMisuseError { err: "Funding amount (356) can't even pay fee for initial commitment transaction fee of 357.".to_string() });
 
@@ -1638,9 +1705,10 @@ fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
        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);
 
        // Add a 2* and +1 for the fee spike reserve.
-       let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1);
+       let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors);
        let recv_value_1 = (chan_stat.value_to_self_msat - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlc)/2;
        let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
 
@@ -1657,7 +1725,7 @@ fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
        nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
 
        // Attempt to trigger a channel reserve violation --> payment failure.
-       let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2);
+       let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2, opt_anchors);
        let recv_value_2 = chan_stat.value_to_self_msat - amt_msat_1 - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlcs + 1;
        let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
        let (route_2, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], amt_msat_2);
@@ -1708,8 +1776,8 @@ fn test_inbound_outbound_capacity_is_not_zero() {
        assert_eq!(channels1[0].inbound_capacity_msat, 100000 * 1000 - 95000000 - reserve*1000);
 }
 
-fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64) -> u64 {
-       (COMMITMENT_TX_BASE_WEIGHT + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
+fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64, opt_anchors: bool) -> u64 {
+       (commitment_tx_base_weight(opt_anchors) + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
 }
 
 #[test]
@@ -1744,6 +1812,7 @@ 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 recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
 
@@ -1765,7 +1834,7 @@ fn test_channel_reserve_holding_cell_htlcs() {
                // 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
                // Also, ensure that each payment has enough to be over the dust limit to
                // ensure it'll be included in each commit tx fee calculation.
-               let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
+               let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, opt_anchors);
                let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.counterparty_dust_limit_msat + 1000);
                if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
                        break;
@@ -1797,7 +1866,7 @@ fn test_channel_reserve_holding_cell_htlcs() {
        // the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
        // is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
        // policy.
-       let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1);
+       let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors);
        let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
        let amt_msat_1 = recv_value_1 + total_fee_msat;
 
@@ -1822,7 +1891,7 @@ fn test_channel_reserve_holding_cell_htlcs() {
        }
 
        // split the rest to test holding cell
-       let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
+       let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, opt_anchors);
        let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_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;
@@ -1933,11 +2002,11 @@ fn test_channel_reserve_holding_cell_htlcs() {
        claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21);
        claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22);
 
-       let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
+       let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1, opt_anchors);
        let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
        send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3);
 
-       let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
+       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);
        assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
@@ -2412,7 +2481,7 @@ fn revoked_output_claim() {
        mine_transaction(&nodes[1], &revoked_local_txn[0]);
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        assert_eq!(node_txn.len(), 2); // ChannelMonitor: justice tx against revoked to_local output, ChannelManager: local commitment tx
 
        check_spends!(node_txn[0], revoked_local_txn[0]);
@@ -3093,9 +3162,10 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        mine_transaction(&nodes[1], &revoked_local_txn[0]);
        check_added_monitors!(nodes[1], 1);
        connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
+       assert!(ANTI_REORG_DELAY > PAYMENT_EXPIRY_BLOCKS); // We assume payments will also expire
 
        let events = nodes[1].node.get_and_clear_pending_events();
-       assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
+       assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 4 });
        match events[0] {
                Event::ChannelClosed { reason: ClosureReason::CommitmentTxConfirmed, .. } => { },
                _ => panic!("Unexepected event"),
@@ -3108,6 +3178,12 @@ fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use
        }
        if !deliver_bs_raa {
                match events[2] {
+                       Event::PaymentFailed { ref payment_hash, .. } => {
+                               assert_eq!(*payment_hash, fourth_payment_hash);
+                       },
+                       _ => panic!("Unexpected event"),
+               }
+               match events[3] {
                        Event::PendingHTLCsForwardable { .. } => { },
                        _ => panic!("Unexpected event"),
                };
@@ -4023,7 +4099,7 @@ fn do_test_htlc_timeout(send_partial_mpp: bool) {
                // indicates there are more HTLCs coming.
                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]);
-               nodes[0].node.send_payment_along_path(&route.paths[0], &route.payee, &our_payment_hash, &Some(payment_secret), 200000, cur_height, payment_id, &None).unwrap();
+               nodes[0].node.send_payment_along_path(&route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200000, cur_height, payment_id, &None).unwrap();
                check_added_monitors!(nodes[0], 1);
                let mut events = nodes[0].node.get_and_clear_pending_msg_events();
                assert_eq!(events.len(), 1);
@@ -4125,7 +4201,14 @@ fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
                }
                expect_payment_failed_with_update!(nodes[0], second_payment_hash, false, chan_2.0.contents.short_channel_id, false);
        } else {
-               expect_payment_failed!(nodes[1], second_payment_hash, true);
+               let events = nodes[1].node.get_and_clear_pending_events();
+               assert_eq!(events.len(), 2);
+               if let Event::PaymentPathFailed { ref payment_hash, .. } = events[0] {
+                       assert_eq!(*payment_hash, second_payment_hash);
+               } else { panic!("Unexpected event"); }
+               if let Event::PaymentFailed { ref payment_hash, .. } = events[1] {
+                       assert_eq!(*payment_hash, second_payment_hash);
+               } else { panic!("Unexpected event"); }
        }
 }
 
@@ -4562,7 +4645,7 @@ fn test_claim_sizeable_push_msat() {
        check_closed_broadcast!(nodes[1], true);
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed);
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        assert_eq!(node_txn.len(), 1);
        check_spends!(node_txn[0], chan.3);
        assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening
@@ -4630,7 +4713,7 @@ fn test_claim_on_remote_revoked_sizeable_push_msat() {
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
 
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        mine_transaction(&nodes[1], &node_txn[0]);
        connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
 
@@ -4673,7 +4756,7 @@ fn test_static_spendable_outputs_preimage_tx() {
        }
 
        // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
        assert_eq!(node_txn.len(), 3);
        check_spends!(node_txn[0], commitment_tx[0]);
        assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
@@ -4759,7 +4842,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
 
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        assert_eq!(node_txn.len(), 2);
        assert_eq!(node_txn[0].input.len(), 2);
        check_spends!(node_txn[0], revoked_local_txn[0]);
@@ -4812,7 +4895,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
 
-       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        assert_eq!(node_txn.len(), 3); // ChannelMonitor: bogus justice tx, justice tx on revoked outputs, ChannelManager: local commitment tx
        // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
        // including the one already spent by revoked_htlc_txn[1]. That's OK, we'll spend with valid
@@ -4868,7 +4951,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
        check_closed_broadcast!(nodes[1], true);
        check_added_monitors!(nodes[1], 1);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
-       let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
 
        assert_eq!(revoked_htlc_txn.len(), 2);
        assert_eq!(revoked_htlc_txn[0].input.len(), 1);
@@ -4886,7 +4969,7 @@ fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
        check_added_monitors!(nodes[0], 1);
        check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed);
 
-       let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        assert_eq!(node_txn.len(), 3); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-success, ChannelManager: local commitment tx
 
        // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
@@ -5027,7 +5110,7 @@ fn test_onchain_to_onchain_claim() {
        let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
        mine_transaction(&nodes[1], &commitment_tx[0]);
        check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
-       let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+       let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
        // ChannelMonitor: HTLC-Success tx, ChannelManager: local commitment tx + HTLC-Success tx
        assert_eq!(b_txn.len(), 3);
        check_spends!(b_txn[1], chan_1.3);
@@ -5781,7 +5864,14 @@ fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no
                check_added_monitors!(nodes[0], 1);
                check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed);
        } else {
-               expect_payment_failed!(nodes[0], our_payment_hash, true);
+               let events = nodes[0].node.get_and_clear_pending_events();
+               assert_eq!(events.len(), 2);
+               if let Event::PaymentPathFailed { ref payment_hash, .. } = events[0] {
+                       assert_eq!(*payment_hash, our_payment_hash);
+               } else { panic!("Unexpected event"); }
+               if let Event::PaymentFailed { ref payment_hash, .. } = events[1] {
+                       assert_eq!(*payment_hash, our_payment_hash);
+               } else { panic!("Unexpected event"); }
        }
 }
 
@@ -5941,9 +6031,10 @@ fn test_fail_holding_cell_htlc_upon_free() {
        let mut chan_stat = get_channel_value_stat!(nodes[0], 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);
 
        // 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);
+       let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send);
 
        // Send a payment which passes reserve checks but gets stuck in the holding cell.
@@ -6020,10 +6111,11 @@ fn test_free_and_fail_holding_cell_htlcs() {
        let mut chan_stat = get_channel_value_stat!(nodes[0], 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);
 
        // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
        let amt_1 = 20000;
-       let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1) - amt_1;
+       let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors) - amt_1;
        let (route_1, payment_hash_1, payment_preimage_1, payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[1], amt_1);
        let (route_2, payment_hash_2, _, payment_secret_2) = get_route_and_payment_hash!(nodes[0], nodes[1], amt_2);
 
@@ -6145,11 +6237,12 @@ fn test_fail_holding_cell_htlc_upon_free_multihop() {
        let mut chan_stat = get_channel_value_stat!(nodes[0], 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);
 
        // Send a payment which passes reserve checks but gets stuck in the holding cell.
        let feemsat = 239;
        let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
-       let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1) - total_routing_fee_msat;
+       let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors) - total_routing_fee_msat;
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], max_can_send);
        let payment_event = {
                nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
@@ -6424,8 +6517,9 @@ fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
        let chan_stat = get_channel_value_stat!(nodes[0], 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);
        // The 2* and +1 are for the fee spike reserve.
-       let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1);
+       let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
 
        let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
        let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send);
@@ -7089,7 +7183,7 @@ fn test_user_configurable_csv_delay() {
        nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
        let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
        open_channel.to_self_delay = 200;
-       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), &open_channel, 0, &low_our_to_self_config, 0) {
+       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), &open_channel, 0, &low_our_to_self_config, 0, &nodes[0].logger) {
                match error {
                        ChannelError::Close(err) => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str()));  },
                        _ => panic!("Unexpected event"),
@@ -7118,7 +7212,7 @@ fn test_user_configurable_csv_delay() {
        nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
        let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
        open_channel.to_self_delay = 200;
-       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), &open_channel, 0, &high_their_to_self_config, 0) {
+       if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), &open_channel, 0, &high_their_to_self_config, 0, &nodes[0].logger) {
                match error {
                        ChannelError::Close(err) => { assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(err.as_str())); },
                        _ => panic!("Unexpected event"),
@@ -7257,8 +7351,8 @@ fn test_check_htlc_underpaying() {
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
 
        let scorer = test_utils::TestScorer::with_fixed_penalty(0);
-       let payee = Payee::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known());
-       let route = get_route(&nodes[0].node.get_our_node_id(), &payee, nodes[0].network_graph, None, 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer).unwrap();
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known());
+       let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, nodes[0].network_graph, None, 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer).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();
        nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
@@ -7658,13 +7752,13 @@ fn test_bump_penalty_txn_on_revoked_htlcs() {
 
        let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
        // Lock HTLC in both directions (using a slightly lower CLTV delay to provide timely RBF bumps)
-       let payee = Payee::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known());
+       let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known());
        let scorer = test_utils::TestScorer::with_fixed_penalty(0);
-       let route = get_route(&nodes[0].node.get_our_node_id(), &payee, &nodes[0].network_graph, None,
+       let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph, None,
                3_000_000, 50, nodes[0].logger, &scorer).unwrap();
        let payment_preimage = send_along_route(&nodes[0], route, &[&nodes[1]], 3_000_000).0;
-       let payee = Payee::from_node_id(nodes[0].node.get_our_node_id()).with_features(InvoiceFeatures::known());
-       let route = get_route(&nodes[1].node.get_our_node_id(), &payee, nodes[1].network_graph, None,
+       let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id()).with_features(InvoiceFeatures::known());
+       let route = get_route(&nodes[1].node.get_our_node_id(), &payment_params, nodes[1].network_graph, None,
                3_000_000, 50, nodes[0].logger, &scorer).unwrap();
        send_along_route(&nodes[1], route, &[&nodes[0]], 3_000_000);
 
@@ -8117,7 +8211,7 @@ fn test_preimage_storage() {
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
 
        {
-               let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 7200);
+               let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 7200).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)).unwrap();
                check_added_monitors!(nodes[0], 1);
@@ -8145,8 +8239,10 @@ fn test_preimage_storage() {
 }
 
 #[test]
+#[allow(deprecated)]
 fn test_secret_timeout() {
-       // Simple test of payment secret storage time outs
+       // Simple test of payment secret storage time outs. After
+       // `create_inbound_payment(_for_hash)_legacy` is removed, this test will be removed as well.
        let chanmon_cfgs = create_chanmon_cfgs(2);
        let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
@@ -8154,11 +8250,11 @@ fn test_secret_timeout() {
 
        create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
 
-       let (payment_hash, payment_secret_1) = nodes[1].node.create_inbound_payment(Some(100_000), 2);
+       let (payment_hash, payment_secret_1) = nodes[1].node.create_inbound_payment_legacy(Some(100_000), 2).unwrap();
 
        // We should fail to register the same payment hash twice, at least until we've connected a
        // block with time 7200 + CHAN_CONFIRM_DEPTH + 1.
-       if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2) {
+       if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash_legacy(payment_hash, Some(100_000), 2) {
                assert_eq!(err, "Duplicate payment hash");
        } else { panic!(); }
        let mut block = {
@@ -8173,7 +8269,7 @@ fn test_secret_timeout() {
                }
        };
        connect_block(&nodes[1], &block);
-       if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2) {
+       if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash_legacy(payment_hash, Some(100_000), 2) {
                assert_eq!(err, "Duplicate payment hash");
        } else { panic!(); }
 
@@ -8182,7 +8278,7 @@ fn test_secret_timeout() {
        block.header.prev_blockhash = block.header.block_hash();
        block.header.time += 1;
        connect_block(&nodes[1], &block);
-       let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2).unwrap();
+       let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash_legacy(payment_hash, Some(100_000), 2).unwrap();
        assert_ne!(payment_secret_1, our_payment_secret);
 
        {
@@ -8221,7 +8317,7 @@ fn test_bad_secret_hash() {
 
        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);
+       let (our_payment_hash, our_payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 2).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
@@ -8589,7 +8685,7 @@ fn do_test_onchain_htlc_settlement_after_close(broadcast_alice: bool, go_onchain
                };
                let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
                connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]});
-               let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+               let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
                if broadcast_alice {
                        check_closed_broadcast!(nodes[1], true);
                        check_added_monitors!(nodes[1], 1);
@@ -9189,13 +9285,13 @@ fn test_keysend_payments_to_public_node() {
        let network_graph = nodes[0].network_graph;
        let payer_pubkey = nodes[0].node.get_our_node_id();
        let payee_pubkey = nodes[1].node.get_our_node_id();
-       let params = RouteParameters {
-               payee: Payee::for_keysend(payee_pubkey),
+       let route_params = RouteParameters {
+               payment_params: PaymentParameters::for_keysend(payee_pubkey),
                final_value_msat: 10000,
                final_cltv_expiry_delta: 40,
        };
        let scorer = test_utils::TestScorer::with_fixed_penalty(0);
-       let route = find_route(&payer_pubkey, &params, network_graph, None, nodes[0].logger, &scorer).unwrap();
+       let route = find_route(&payer_pubkey, &route_params, network_graph, None, nodes[0].logger, &scorer).unwrap();
 
        let test_preimage = PaymentPreimage([42; 32]);
        let (payment_hash, _) = nodes[0].node.send_spontaneous_payment(&route, Some(test_preimage)).unwrap();
@@ -9221,8 +9317,8 @@ fn test_keysend_payments_to_private_node() {
        nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: InitFeatures::known() });
 
        let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
-       let params = RouteParameters {
-               payee: Payee::for_keysend(payee_pubkey),
+       let route_params = RouteParameters {
+               payment_params: PaymentParameters::for_keysend(payee_pubkey),
                final_value_msat: 10000,
                final_cltv_expiry_delta: 40,
        };
@@ -9230,7 +9326,7 @@ fn test_keysend_payments_to_private_node() {
        let first_hops = nodes[0].node.list_usable_channels();
        let scorer = test_utils::TestScorer::with_fixed_penalty(0);
        let route = find_route(
-               &payer_pubkey, &params, network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
+               &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
                nodes[0].logger, &scorer
        ).unwrap();
 
@@ -9287,6 +9383,8 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
        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(), InitFeatures::known(), &accept_channel);
 
+       let opt_anchors = false;
+
        let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], 1_000_000, 42);
 
        if on_holder_tx {
@@ -9311,10 +9409,10 @@ fn do_test_max_dust_htlc_exposure(dust_outbound_balance: bool, exposure_breach_e
                let chan = chan_lock.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 / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
+       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;
        let dust_outbound_htlc_on_holder_tx: u64 = config.channel_options.max_dust_htlc_exposure_msat / dust_outbound_htlc_on_holder_tx_msat;
 
-       let dust_inbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * HTLC_SUCCESS_TX_WEIGHT / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
+       let dust_inbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_success_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
        let dust_inbound_htlc_on_holder_tx: u64 = config.channel_options.max_dust_htlc_exposure_msat / dust_inbound_htlc_on_holder_tx_msat;
 
        let dust_htlc_on_counterparty_tx: u64 = 25;