},
funding_txo: Some(OutPoint { txid: bitcoin::Txid::from_slice(&[0; 32]).unwrap(), index: 0 }),
short_channel_id: Some(scid),
+ inbound_scid_alias: None,
channel_value_satoshis: slice_to_be64(get_slice!(8)),
user_channel_id: 0, inbound_capacity_msat: 0,
unspendable_punishment_reserve: None,
/// [`SpvClient`]: crate::SpvClient
/// [`ChannelManager`]: lightning::ln::channelmanager::ChannelManager
/// [`ChannelMonitor`]: lightning::chain::channelmonitor::ChannelMonitor
-pub async fn synchronize_listeners<B: BlockSource, C: Cache>(
+pub async fn synchronize_listeners<'a, B: BlockSource, C: Cache, L: chain::Listen + ?Sized>(
block_source: &mut B,
network: Network,
header_cache: &mut C,
- mut chain_listeners: Vec<(BlockHash, &dyn chain::Listen)>,
+ mut chain_listeners: Vec<(BlockHash, &'a L)>,
) -> BlockSourceResult<ValidatedBlockHeader> {
let best_header = validate_best_block_header(block_source).await?;
}
/// Wrapper for supporting dynamically sized chain listeners.
-struct DynamicChainListener<'a>(&'a dyn chain::Listen);
+struct DynamicChainListener<'a, L: chain::Listen + ?Sized>(&'a L);
-impl<'a> chain::Listen for DynamicChainListener<'a> {
+impl<'a, L: chain::Listen + ?Sized> chain::Listen for DynamicChainListener<'a, L> {
fn block_connected(&self, _block: &Block, _height: u32) {
unreachable!()
}
}
/// A set of dynamically sized chain listeners, each paired with a starting block height.
-struct ChainListenerSet<'a>(Vec<(u32, &'a dyn chain::Listen)>);
+struct ChainListenerSet<'a, L: chain::Listen + ?Sized>(Vec<(u32, &'a L)>);
-impl<'a> chain::Listen for ChainListenerSet<'a> {
+impl<'a, L: chain::Listen + ?Sized> chain::Listen for ChainListenerSet<'a, L> {
fn block_connected(&self, block: &Block, height: u32) {
for (starting_height, chain_listener) in self.0.iter() {
if height > *starting_height {
impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T, C, tb::False> {
/// Sets the payment secret and relevant features.
pub fn payment_secret(mut self, payment_secret: PaymentSecret) -> InvoiceBuilder<D, H, T, C, tb::True> {
- let features = InvoiceFeatures::empty()
- .set_variable_length_onion_required()
- .set_payment_secret_required();
+ let mut features = InvoiceFeatures::empty();
+ features.set_variable_length_onion_required();
+ features.set_payment_secret_required();
self.tagged_fields.push(TaggedField::PaymentSecret(payment_secret));
self.tagged_fields.push(TaggedField::Features(features));
self.set_flags()
impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T, C, tb::True> {
/// Sets the `basic_mpp` feature as optional.
pub fn basic_mpp(mut self) -> Self {
- self.tagged_fields = self.tagged_fields
- .drain(..)
- .map(|field| match field {
- TaggedField::Features(f) => TaggedField::Features(f.set_basic_mpp_optional()),
- _ => field,
- })
- .collect();
+ for field in self.tagged_fields.iter_mut() {
+ if let TaggedField::Features(f) = field {
+ f.set_basic_mpp_optional();
+ }
+ }
self
}
}
invoice = invoice.amount_milli_satoshis(amt);
}
- for hint in phantom_route_hints {
- for channel in &hint.channels {
- let short_channel_id = match channel.short_channel_id {
- Some(id) => id,
- None => continue,
- };
- let forwarding_info = match &channel.counterparty.forwarding_info {
- Some(info) => info.clone(),
- None => continue,
- };
- invoice = invoice.private_route(RouteHint(vec![
- RouteHintHop {
- src_node_id: channel.counterparty.node_id,
- short_channel_id,
- fees: RoutingFees {
- base_msat: forwarding_info.fee_base_msat,
- proportional_millionths: forwarding_info.fee_proportional_millionths,
- },
- cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
- htlc_minimum_msat: None,
- htlc_maximum_msat: None,
- },
- RouteHintHop {
- src_node_id: hint.real_node_pubkey,
- short_channel_id: hint.phantom_scid,
- fees: RoutingFees {
- base_msat: 0,
- proportional_millionths: 0,
- },
- cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA,
- htlc_minimum_msat: None,
- htlc_maximum_msat: None,
- }])
- );
+ for PhantomRouteHints { channels, phantom_scid, real_node_pubkey } in phantom_route_hints {
+ let mut route_hints = filter_channels(channels, amt_msat);
+
+ // If we have any public channel, the route hints from `filter_channels` will be empty.
+ // In that case we create a RouteHint on which we will push a single hop with the phantom
+ // route into the invoice, and let the sender find the path to the `real_node_pubkey`
+ // node by looking at our public channels.
+ if route_hints.is_empty() {
+ route_hints.push(RouteHint(vec![]))
+ }
+ for mut route_hint in route_hints {
+ route_hint.0.push(RouteHintHop {
+ src_node_id: real_node_pubkey,
+ short_channel_id: phantom_scid,
+ fees: RoutingFees {
+ base_msat: 0,
+ proportional_millionths: 0,
+ },
+ cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA,
+ htlc_minimum_msat: None,
+ htlc_maximum_msat: None,});
+ invoice = invoice.private_route(route_hint.clone());
}
}
F::Target: FeeEstimator,
L::Target: Logger,
{
- // Marshall route hints.
- let our_channels = channelmanager.list_usable_channels();
- let mut route_hints = vec![];
- for channel in our_channels {
- let short_channel_id = match channel.short_channel_id {
- Some(id) => id,
- None => continue,
- };
- let forwarding_info = match channel.counterparty.forwarding_info {
- Some(info) => info,
- None => continue,
- };
- route_hints.push(RouteHint(vec![RouteHintHop {
- src_node_id: channel.counterparty.node_id,
- short_channel_id,
- fees: RoutingFees {
- base_msat: forwarding_info.fee_base_msat,
- proportional_millionths: forwarding_info.fee_proportional_millionths,
- },
- cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
- htlc_minimum_msat: None,
- htlc_maximum_msat: None,
- }]));
- }
+ let route_hints = filter_channels(channelmanager.list_usable_channels(), amt_msat);
// `create_inbound_payment` only returns an error if the amount is greater than the total bitcoin
// supply.
}
}
+/// Filters the `channels` for an invoice, and returns the corresponding `RouteHint`s to include
+/// in the invoice.
+///
+/// The filtering is based on the following criteria:
+/// * Only one channel per counterparty node
+/// * Always select the channel with the highest inbound capacity per counterparty node
+/// * Filter out channels with a lower inbound capacity than `min_inbound_capacity_msat`, if any
+/// channel with a higher or equal inbound capacity than `min_inbound_capacity_msat` exists
+/// * If any public channel exists, the returned `RouteHint`s will be empty, and the sender will
+/// need to find the path by looking at the public channels instead
+fn filter_channels(channels: Vec<ChannelDetails>, min_inbound_capacity_msat: Option<u64>) -> Vec<RouteHint>{
+ let mut filtered_channels: HashMap<PublicKey, &ChannelDetails> = HashMap::new();
+ let min_inbound_capacity = min_inbound_capacity_msat.unwrap_or(0);
+ let mut min_capacity_channel_exists = false;
+
+ for channel in channels.iter() {
+ if channel.get_inbound_payment_scid().is_none() || channel.counterparty.forwarding_info.is_none() {
+ continue;
+ }
+
+ if channel.is_public {
+ // If any public channel exists, return no hints and let the sender
+ // look at the public channels instead.
+ return vec![]
+ }
+
+ if channel.inbound_capacity_msat >= min_inbound_capacity {
+ min_capacity_channel_exists = true;
+ };
+ match filtered_channels.entry(channel.counterparty.node_id) {
+ hash_map::Entry::Occupied(mut entry) => {
+ let current_max_capacity = entry.get().inbound_capacity_msat;
+ if channel.inbound_capacity_msat < current_max_capacity {
+ continue;
+ }
+ entry.insert(channel);
+ }
+ hash_map::Entry::Vacant(entry) => {
+ entry.insert(channel);
+ }
+ }
+ }
+
+ let route_hint_from_channel = |channel: &ChannelDetails| {
+ let forwarding_info = channel.counterparty.forwarding_info.as_ref().unwrap();
+ RouteHint(vec![RouteHintHop {
+ src_node_id: channel.counterparty.node_id,
+ short_channel_id: channel.get_inbound_payment_scid().unwrap(),
+ fees: RoutingFees {
+ base_msat: forwarding_info.fee_base_msat,
+ proportional_millionths: forwarding_info.fee_proportional_millionths,
+ },
+ cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
+ htlc_minimum_msat: None,
+ htlc_maximum_msat: None,}])
+ };
+ // If all channels are private, return the route hint for the highest inbound capacity channel
+ // per counterparty node. If channels with an higher inbound capacity than the
+ // min_inbound_capacity exists, filter out the channels with a lower capacity than that.
+ filtered_channels.into_iter()
+ .filter(|(_counterparty_id, channel)| {
+ min_capacity_channel_exists && channel.inbound_capacity_msat >= min_inbound_capacity ||
+ !min_capacity_channel_exists
+ })
+ .map(|(_counterparty_id, channel)| route_hint_from_channel(&channel))
+ .collect::<Vec<RouteHint>>()
+}
+
/// A [`Router`] implemented using [`find_route`].
pub struct DefaultRouter<G: Deref<Target = NetworkGraph>, L: Deref> where L::Target: Logger {
network_graph: G,
use bitcoin_hashes::sha256::Hash as Sha256;
use lightning::chain::keysinterface::PhantomKeysManager;
use lightning::ln::{PaymentPreimage, PaymentHash};
- use lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY;
+ use lightning::ln::channelmanager::{PhantomRouteHints, MIN_FINAL_CLTV_EXPIRY};
use lightning::ln::functional_test_utils::*;
use lightning::ln::features::InitFeatures;
use lightning::ln::msgs::ChannelMessageHandler;
use lightning::util::enforcing_trait_impls::EnforcingSigner;
use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider, Event};
use lightning::util::test_utils;
+ use lightning::util::config::UserConfig;
use lightning::chain::keysinterface::KeysInterface;
use utils::create_invoice_from_channelmanager_and_duration_since_epoch;
+ use std::collections::HashSet;
#[test]
fn test_from_channelmanager() {
let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
- let _chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
&nodes[1].node, nodes[1].keys_manager, Currency::BitcoinTestnet, Some(10_000), "test".to_string(),
Duration::from_secs(1234567)).unwrap();
assert_eq!(invoice.min_final_cltv_expiry(), MIN_FINAL_CLTV_EXPIRY as u64);
assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
+ // Invoice SCIDs should always use inbound SCID aliases over the real channel ID, if one is
+ // available.
+ assert_eq!(invoice.route_hints().len(), 1);
+ assert_eq!(invoice.route_hints()[0].0.len(), 1);
+ assert_eq!(invoice.route_hints()[0].0[0].short_channel_id,
+ nodes[1].node.list_usable_channels()[0].inbound_scid_alias.unwrap());
+
let payment_params = PaymentParameters::from_node_id(invoice.recover_payee_pub_key())
.with_features(invoice.features().unwrap().clone())
.with_route_hints(invoice.route_hints());
assert_eq!(events.len(), 2);
}
+ #[test]
+ fn test_hints_includes_single_channels_to_nodes() {
+ 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);
+
+ let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_2_0.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
+ }
+
+ #[test]
+ fn test_hints_has_only_highest_inbound_capacity_channel() {
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+ let _chan_1_0_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_1_0_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 10_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let _chan_1_0_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_1_0_high_inbound_capacity.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
+ }
+
+ #[test]
+ fn test_forwarding_info_not_assigned_channel_excluded_from_hints() {
+ 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);
+ let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ // Create an unannonced channel between `nodes[2]` and `nodes[0]`, for which the
+ // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
+ // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
+ let mut private_chan_cfg = UserConfig::default();
+ private_chan_cfg.channel_options.announced_channel = false;
+ let temporary_channel_id = nodes[2].node.create_channel(nodes[0].node.get_our_node_id(), 1_000_000, 500_000_000, 42, Some(private_chan_cfg)).unwrap();
+ let open_channel = get_event_msg!(nodes[2], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_open_channel(&nodes[2].node.get_our_node_id(), InitFeatures::known(), &open_channel);
+ let accept_channel = get_event_msg!(nodes[0], MessageSendEvent::SendAcceptChannel, nodes[2].node.get_our_node_id());
+ nodes[2].node.handle_accept_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
+
+ let tx = sign_funding_transaction(&nodes[2], &nodes[0], 1_000_000, temporary_channel_id);
+
+ let conf_height = core::cmp::max(nodes[2].best_block_info().1 + 1, nodes[0].best_block_info().1 + 1);
+ confirm_transaction_at(&nodes[2], &tx, conf_height);
+ connect_blocks(&nodes[2], CHAN_CONFIRM_DEPTH - 1);
+ confirm_transaction_at(&nodes[0], &tx, conf_height);
+ connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
+ let as_funding_locked = get_event_msg!(nodes[2], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id());
+ nodes[2].node.handle_funding_locked(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendFundingLocked, nodes[2].node.get_our_node_id()));
+ get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_funding_locked(&nodes[2].node.get_our_node_id(), &as_funding_locked);
+ get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
+
+ // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the second
+ // channel, the channel will never be assigned any `counterparty.forwarding_info`.
+ // Therefore only `chan_1_0` should be included in the hints.
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
+ match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
+ }
+
+ #[test]
+ fn test_no_hints_if_a_mix_between_public_and_private_channel_exists() {
+ 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);
+ let _chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
+ nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
+
+ // Ensure that the invoice doesn't include any route hints for any of `nodes[0]` channels,
+ // even though all channels between `nodes[1]` and `nodes[0]` are private, as there is a
+ // public channel between `nodes[2]` and `nodes[0]`
+ match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
+ }
+
+ #[test]
+ fn test_only_public_channels_includes_no_channels_in_hints() {
+ 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);
+ let chan_1_0 = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &chan_1_0.0);
+ nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_1_0.1);
+
+ let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
+ nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
+
+ // As all of `nodes[0]` channels are public, no channels should be included in the hints
+ match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
+ }
+
+ #[test]
+ fn test_channels_with_lower_inbound_capacity_than_invoice_amt_hints_filtering() {
+ 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);
+ let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+
+ // As the invoice amt is 1 msat above chan_1_0's inbound capacity, it shouldn't be included
+ let mut scid_aliases_99_000_001_msat = HashSet::new();
+ scid_aliases_99_000_001_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(Some(99_000_001), &nodes[0], scid_aliases_99_000_001_msat);
+
+ // As the invoice amt is exactly at chan_1_0's inbound capacity, it should be included
+ let mut scid_aliases_99_000_000_msat = HashSet::new();
+ scid_aliases_99_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
+ scid_aliases_99_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(Some(99_000_000), &nodes[0], scid_aliases_99_000_000_msat);
+
+ // As the invoice amt is above all channels' inbound capacity, they will still be included
+ let mut scid_aliases_2_000_000_000_msat = HashSet::new();
+ scid_aliases_2_000_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
+ scid_aliases_2_000_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(Some(2_000_000_000), &nodes[0], scid_aliases_2_000_000_000_msat);
+
+ // An invoice with no specified amount should include all channels in the route hints.
+ let mut scid_aliases_no_specified_amount = HashSet::new();
+ scid_aliases_no_specified_amount.insert(chan_1_0.0.short_channel_id_alias.unwrap());
+ scid_aliases_no_specified_amount.insert(chan_2_0.0.short_channel_id_alias.unwrap());
+
+ match_invoice_routes(None, &nodes[0], scid_aliases_no_specified_amount);
+ }
+
+ fn match_invoice_routes<'a, 'b: 'a, 'c: 'b>(
+ invoice_amt: Option<u64>,
+ invoice_node: &Node<'a, 'b, 'c>,
+ mut chan_ids_to_match: HashSet<u64>
+ ) {
+ let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
+ &invoice_node.node, invoice_node.keys_manager, Currency::BitcoinTestnet, invoice_amt, "test".to_string(),
+ Duration::from_secs(1234567)).unwrap();
+ let hints = invoice.private_routes();
+
+ for hint in hints {
+ let hint_short_chan_id = (hint.0).0[0].short_channel_id;
+ assert!(chan_ids_to_match.remove(&hint_short_chan_id));
+ }
+ assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
+ }
+
#[test]
#[cfg(feature = "std")]
fn test_multi_node_receive() {
_ => panic!("Unexpected event")
}
}
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_hints_includes_single_channels_to_participating_nodes() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(3);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ 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_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[1],
+ vec![&nodes[1], &nodes[2],],
+ scid_aliases,
+ false
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_hints_includes_one_channel_of_each_counterparty_nodes_per_participating_node() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(4);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+ let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001, InitFeatures::known(), InitFeatures::known());
+ let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 3_000_000, 10005, InitFeatures::known(), InitFeatures::known());
+
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_1_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases,
+ false
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_forwarding_info_not_assigned_channel_excluded_from_hints() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(4);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+ let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ // Create an unannonced channel between `nodes[1]` and `nodes[3]`, for which the
+ // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
+ // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
+ let mut private_chan_cfg = UserConfig::default();
+ private_chan_cfg.channel_options.announced_channel = false;
+ let temporary_channel_id = nodes[1].node.create_channel(nodes[3].node.get_our_node_id(), 1_000_000, 500_000_000, 42, Some(private_chan_cfg)).unwrap();
+ let open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[3].node.get_our_node_id());
+ nodes[3].node.handle_open_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel);
+ let accept_channel = get_event_msg!(nodes[3], MessageSendEvent::SendAcceptChannel, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_accept_channel(&nodes[3].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
+
+ let tx = sign_funding_transaction(&nodes[1], &nodes[3], 1_000_000, temporary_channel_id);
+
+ let conf_height = core::cmp::max(nodes[1].best_block_info().1 + 1, nodes[3].best_block_info().1 + 1);
+ confirm_transaction_at(&nodes[1], &tx, conf_height);
+ connect_blocks(&nodes[1], CHAN_CONFIRM_DEPTH - 1);
+ confirm_transaction_at(&nodes[3], &tx, conf_height);
+ connect_blocks(&nodes[3], CHAN_CONFIRM_DEPTH - 1);
+ let as_funding_locked = get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[3].node.get_our_node_id());
+ nodes[1].node.handle_funding_locked(&nodes[3].node.get_our_node_id(), &get_event_msg!(nodes[3], MessageSendEvent::SendFundingLocked, nodes[1].node.get_our_node_id()));
+ get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[3].node.get_our_node_id());
+ nodes[3].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &as_funding_locked);
+ get_event_msg!(nodes[3], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
+
+ // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the third
+ // channel, the channel will never be assigned any `counterparty.forwarding_info`.
+ // Therefore only `chan_0_3` should be included in the hints for `nodes[3]`.
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases,
+ false
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_with_only_public_channels_hints_includes_only_phantom_route() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(3);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ 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_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
+ nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
+
+ // Hints should include `chan_0_1` from as `nodes[1]` only have private channels, but not
+ // `chan_0_2` as `nodes[2]` only has public channels.
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[1],
+ vec![&nodes[1], &nodes[2],],
+ scid_aliases,
+ true
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_with_mixed_public_and_private_channel_hints_includes_only_phantom_route() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(4);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+ let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ let chan_0_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_0_2.1);
+ nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_2.0);
+ let _chan_1_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ // Hints should include `chan_0_3` from as `nodes[3]` only have private channels, and no
+ // channels for `nodes[2]` as it contains a mix of public and private channels.
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases,
+ true
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_hints_has_only_highest_inbound_capacity_channel() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(3);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ 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_0_1_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_0_1_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let _chan_0_1_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
+
+ let mut scid_aliases = HashSet::new();
+ scid_aliases.insert(chan_0_1_high_inbound_capacity.0.short_channel_id_alias.unwrap());
+ scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(10_000),
+ &nodes[1],
+ vec![&nodes[1], &nodes[2],],
+ scid_aliases,
+ false
+ );
+ }
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn test_multi_node_channels_inbound_capacity_lower_than_invoice_amt_filtering() {
+ let mut chanmon_cfgs = create_chanmon_cfgs(4);
+ let seed_1 = [42 as u8; 32];
+ let seed_2 = [43 as u8; 32];
+ let cross_node_seed = [44 as u8; 32];
+ chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
+ chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+ let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 200_000, 0, InitFeatures::known(), InitFeatures::known());
+
+ // Since the invoice 1 msat above chan_0_3's inbound capacity, it should be filtered out.
+ let mut scid_aliases_99_000_001_msat = HashSet::new();
+ scid_aliases_99_000_001_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases_99_000_001_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(99_000_001),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases_99_000_001_msat,
+ false
+ );
+
+ // Since the invoice is exactly at chan_0_3's inbound capacity, it should be included.
+ let mut scid_aliases_99_000_000_msat = HashSet::new();
+ scid_aliases_99_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases_99_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+ scid_aliases_99_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(99_000_000),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases_99_000_000_msat,
+ false
+ );
+
+ // Since the invoice is above all of `nodes[2]` channels' inbound capacity, all of
+ // `nodes[2]` them should be included.
+ let mut scid_aliases_300_000_000_msat = HashSet::new();
+ scid_aliases_300_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases_300_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+ scid_aliases_300_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ Some(300_000_000),
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases_300_000_000_msat,
+ false
+ );
+
+ // Since the no specified amount, all channels should included.
+ let mut scid_aliases_no_specified_amount = HashSet::new();
+ scid_aliases_no_specified_amount.insert(chan_0_2.0.short_channel_id_alias.unwrap());
+ scid_aliases_no_specified_amount.insert(chan_0_3.0.short_channel_id_alias.unwrap());
+ scid_aliases_no_specified_amount.insert(chan_1_3.0.short_channel_id_alias.unwrap());
+
+ match_multi_node_invoice_routes(
+ None,
+ &nodes[2],
+ vec![&nodes[2], &nodes[3],],
+ scid_aliases_no_specified_amount,
+ false
+ );
+ }
+
+ #[cfg(feature = "std")]
+ fn match_multi_node_invoice_routes<'a, 'b: 'a, 'c: 'b>(
+ invoice_amt: Option<u64>,
+ invoice_node: &Node<'a, 'b, 'c>,
+ network_multi_nodes: Vec<&Node<'a, 'b, 'c>>,
+ mut chan_ids_to_match: HashSet<u64>,
+ nodes_contains_public_channels: bool
+ ){
+ let (payment_hash, payment_secret) = invoice_node.node.create_inbound_payment(invoice_amt, 3600).unwrap();
+ let phantom_route_hints = network_multi_nodes.iter()
+ .map(|node| node.node.get_phantom_route_hints())
+ .collect::<Vec<PhantomRouteHints>>();
+ let phantom_scids = phantom_route_hints.iter()
+ .map(|route_hint| route_hint.phantom_scid)
+ .collect::<HashSet<u64>>();
+
+ let invoice = ::utils::create_phantom_invoice::<EnforcingSigner, &test_utils::TestKeysInterface>(invoice_amt, "test".to_string(), payment_hash, payment_secret, phantom_route_hints, &invoice_node.keys_manager, Currency::BitcoinTestnet).unwrap();
+
+ let invoice_hints = invoice.private_routes();
+
+ for hint in invoice_hints {
+ let hints = &(hint.0).0;
+ match hints.len() {
+ 1 => {
+ assert!(nodes_contains_public_channels);
+ let phantom_scid = hints[0].short_channel_id;
+ assert!(phantom_scids.contains(&phantom_scid));
+ },
+ 2 => {
+ let hint_short_chan_id = hints[0].short_channel_id;
+ assert!(chan_ids_to_match.remove(&hint_short_chan_id));
+ let phantom_scid = hints[1].short_channel_id;
+ assert!(phantom_scids.contains(&phantom_scid));
+ },
+ _ => panic!("Incorrect hint length generated")
+ }
+ }
+ assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
+ }
}
/// This channel's type, as negotiated during channel open
channel_type: ChannelTypeFeatures,
+
+ // Our counterparty can offer us SCID aliases which they will map to this channel when routing
+ // outbound payments. These can be used in invoice route hints to avoid explicitly revealing
+ // the channel's funding UTXO.
+ // We only bother storing the most recent SCID alias at any time, though our counterparty has
+ // to store all of them.
+ latest_inbound_scid_alias: Option<u64>,
+
+ // We always offer our counterparty a static SCID alias, which we recognize as for this channel
+ // if we see it in HTLC forwarding instructions. We don't bother rotating the alias given we
+ // don't currently support node id aliases and eventually privacy should be provided with
+ // blinded paths instead of simple scid+node_id aliases.
+ outbound_scid_alias: u64,
}
#[cfg(any(test, fuzzing))]
// Constructors:
pub fn new_outbound<K: Deref, F: Deref>(
fee_estimator: &F, keys_provider: &K, counterparty_node_id: PublicKey, their_features: &InitFeatures,
- channel_value_satoshis: u64, push_msat: u64, user_id: u64, config: &UserConfig, current_chain_height: u32
+ channel_value_satoshis: u64, push_msat: u64, user_id: u64, config: &UserConfig, current_chain_height: u32,
+ outbound_scid_alias: u64
) -> Result<Channel<Signer>, APIError>
where K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
workaround_lnd_bug_4006: None,
+ latest_inbound_scid_alias: None,
+ outbound_scid_alias,
+
#[cfg(any(test, fuzzing))]
historical_inbound_htlc_fulfills: HashSet::new(),
/// Assumes chain_hash has already been checked and corresponds with what we expect!
pub fn new_from_req<K: Deref, F: Deref, L: Deref>(
fee_estimator: &F, keys_provider: &K, counterparty_node_id: PublicKey, their_features: &InitFeatures,
- msg: &msgs::OpenChannel, user_id: u64, config: &UserConfig, current_chain_height: u32, logger: &L
+ msg: &msgs::OpenChannel, user_id: u64, config: &UserConfig, current_chain_height: u32, logger: &L,
+ outbound_scid_alias: u64
) -> Result<Channel<Signer>, ChannelError>
where K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
workaround_lnd_bug_4006: None,
+ latest_inbound_scid_alias: None,
+ outbound_scid_alias,
+
#[cfg(any(test, fuzzing))]
historical_inbound_htlc_fulfills: HashSet::new(),
return Err(ChannelError::Ignore("Peer sent funding_locked when we needed a channel_reestablish. The peer is likely lnd, see https://github.com/lightningnetwork/lnd/issues/4006".to_owned()));
}
+ if let Some(scid_alias) = msg.short_channel_id_alias {
+ if Some(scid_alias) != self.short_channel_id {
+ // The scid alias provided can be used to route payments *from* our counterparty,
+ // i.e. can be used for inbound payments and provided in invoices, but is not used
+ // when routing outbound payments.
+ self.latest_inbound_scid_alias = Some(scid_alias);
+ }
+ }
+
let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
if non_shutdown_state == ChannelState::FundingSent as u32 {
} else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
self.channel_state = ChannelState::ChannelFunded as u32 | (self.channel_state & MULTI_STATE_FLAGS);
self.update_time_counter += 1;
- } else if (self.channel_state & (ChannelState::ChannelFunded as u32) != 0 &&
- // Note that funding_signed/funding_created will have decremented both by 1!
- self.cur_holder_commitment_transaction_number == INITIAL_COMMITMENT_NUMBER - 1 &&
- self.cur_counterparty_commitment_transaction_number == INITIAL_COMMITMENT_NUMBER - 1) ||
- // If we reconnected before sending our funding locked they may still resend theirs:
- (self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) ==
- (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32)) {
- if self.counterparty_cur_commitment_point != Some(msg.next_per_commitment_point) {
+ } else if self.channel_state & (ChannelState::ChannelFunded as u32) != 0 ||
+ // If we reconnected before sending our funding locked they may still resend theirs:
+ (self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) ==
+ (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32))
+ {
+ // They probably disconnected/reconnected and re-sent the funding_locked, which is
+ // required, or they're sending a fresh SCID alias.
+ let expected_point =
+ if self.cur_counterparty_commitment_transaction_number == INITIAL_COMMITMENT_NUMBER - 1 {
+ // If they haven't ever sent an updated point, the point they send should match
+ // the current one.
+ self.counterparty_cur_commitment_point
+ } else {
+ // If they have sent updated points, funding_locked is always supposed to match
+ // their "first" point, which we re-derive here.
+ Some(PublicKey::from_secret_key(&self.secp_ctx, &SecretKey::from_slice(
+ &self.commitment_secrets.get_secret(INITIAL_COMMITMENT_NUMBER - 1).expect("We should have all prev secrets available")
+ ).expect("We already advanced, so previous secret keys should have been validated already")))
+ };
+ if expected_point != Some(msg.next_per_commitment_point) {
return Err(ChannelError::Close("Peer sent a reconnect funding_locked with a different point".to_owned()));
}
- // They probably disconnected/reconnected and re-sent the funding_locked, which is required
return Ok(None);
} else {
return Err(ChannelError::Close("Peer sent a funding_locked at a strange time".to_owned()));
Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point,
+ short_channel_id_alias: Some(self.outbound_scid_alias),
})
} else { None };
funding_locked: Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point,
+ short_channel_id_alias: Some(self.outbound_scid_alias),
}),
raa: None, commitment_update: None, mon_update: None,
order: RAACommitmentOrder::CommitmentFirst,
Some(msgs::FundingLocked {
channel_id: self.channel_id(),
next_per_commitment_point,
+ short_channel_id_alias: Some(self.outbound_scid_alias),
})
} else { None };
self.short_channel_id
}
+ /// Allowed in any state (including after shutdown)
+ pub fn latest_inbound_scid_alias(&self) -> Option<u64> {
+ self.latest_inbound_scid_alias
+ }
+
+ /// Allowed in any state (including after shutdown)
+ pub fn outbound_scid_alias(&self) -> u64 {
+ self.outbound_scid_alias
+ }
+ /// Only allowed immediately after deserialization if get_outbound_scid_alias returns 0,
+ /// indicating we were written by LDK prior to 0.0.106 which did not set outbound SCID aliases.
+ pub fn set_outbound_scid_alias(&mut self, outbound_scid_alias: u64) {
+ assert_eq!(self.outbound_scid_alias, 0);
+ self.outbound_scid_alias = outbound_scid_alias;
+ }
+
/// Returns the funding_txo we either got from our peer, or were given by
/// get_outbound_funding_created.
pub fn get_funding_txo(&self) -> Option<OutPoint> {
if need_commitment_update {
if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
if self.channel_state & (ChannelState::PeerDisconnected as u32) == 0 {
- let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
+ let next_per_commitment_point =
+ self.holder_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 1, &self.secp_ctx);
return Some(msgs::FundingLocked {
channel_id: self.channel_id,
next_per_commitment_point,
+ short_channel_id_alias: Some(self.outbound_scid_alias),
});
}
} else {
(13, self.channel_creation_height, required),
(15, preimages, vec_type),
(17, self.announcement_sigs_state, required),
+ (19, self.latest_inbound_scid_alias, option),
+ (21, self.outbound_scid_alias, required),
});
Ok(())
// If we read an old Channel, for simplicity we just treat it as "we never sent an
// AnnouncementSignatures" which implies we'll re-send it on reconnect, but that's fine.
let mut announcement_sigs_state = Some(AnnouncementSigsState::NotSent);
+ let mut latest_inbound_scid_alias = None;
+ let mut outbound_scid_alias = None;
read_tlv_fields!(reader, {
(0, announcement_sigs, option),
(13, channel_creation_height, option),
(15, preimages_opt, vec_type),
(17, announcement_sigs_state, option),
+ (19, latest_inbound_scid_alias, option),
+ (21, outbound_scid_alias, option),
});
if let Some(preimages) = preimages_opt {
workaround_lnd_bug_4006: None,
+ latest_inbound_scid_alias,
+ // Later in the ChannelManager deserialization phase we scan for channels and assign scid aliases if its missing
+ outbound_scid_alias: outbound_scid_alias.unwrap_or(0),
+
#[cfg(any(test, fuzzing))]
historical_inbound_htlc_fulfills,
let secp_ctx = Secp256k1::new();
let node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- match Channel::<EnforcingSigner>::new_outbound(&&fee_estimator, &&keys_provider, node_id, &features, 10000000, 100000, 42, &config, 0) {
+ match Channel::<EnforcingSigner>::new_outbound(&&fee_estimator, &&keys_provider, node_id, &features, 10000000, 100000, 42, &config, 0, 42) {
Err(APIError::IncompatibleShutdownScript { script }) => {
assert_eq!(script.into_inner(), non_v0_segwit_shutdown_script.into_inner());
},
let node_a_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- let node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_a_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0).unwrap();
+ let node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_a_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
// Now change the fee so we can check that the fee in the open_channel message is the
// same as the old fee.
// Create Node A's channel pointing to Node B's pubkey
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0).unwrap();
+ let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
// Create Node B's channel by receiving Node A's open_channel message
// Make sure A's dust limit is as we expect.
let open_channel_msg = node_a_chan.get_open_channel(genesis_block(network).header.block_hash());
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
- let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger).unwrap();
+ let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger, 42).unwrap();
// Node B --> Node A: accept channel, explicitly setting B's dust limit.
let mut accept_channel_msg = node_b_chan.accept_inbound_channel();
let node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- let mut chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0).unwrap();
+ let mut chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
let commitment_tx_fee_0_htlcs = Channel::<EnforcingSigner>::commit_tx_fee_msat(chan.feerate_per_kw, 0, chan.opt_anchors());
let commitment_tx_fee_1_htlc = Channel::<EnforcingSigner>::commit_tx_fee_msat(chan.feerate_per_kw, 1, chan.opt_anchors());
// Create Node A's channel pointing to Node B's pubkey
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0).unwrap();
+ let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
// Create Node B's channel by receiving Node A's open_channel message
let open_channel_msg = node_a_chan.get_open_channel(chain_hash);
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
- let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger).unwrap();
+ let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger, 42).unwrap();
// Node B --> Node A: accept channel
let accept_channel_msg = node_b_chan.accept_inbound_channel();
// Create a channel.
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let config = UserConfig::default();
- let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0).unwrap();
+ let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
assert!(node_a_chan.counterparty_forwarding_info.is_none());
assert_eq!(node_a_chan.holder_htlc_minimum_msat, 1); // the default
assert!(node_a_chan.counterparty_forwarding_info().is_none());
let counterparty_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
let mut config = UserConfig::default();
config.channel_options.announced_channel = false;
- let mut chan = Channel::<InMemorySigner>::new_outbound(&&feeest, &&keys_provider, counterparty_node_id, &InitFeatures::known(), 10_000_000, 100000, 42, &config, 0).unwrap(); // Nothing uses their network key in this test
+ let mut chan = Channel::<InMemorySigner>::new_outbound(&&feeest, &&keys_provider, counterparty_node_id, &InitFeatures::known(), 10_000_000, 100000, 42, &config, 0, 42).unwrap(); // Nothing uses their network key in this test
chan.holder_dust_limit_satoshis = 546;
chan.counterparty_selected_channel_reserve_satoshis = Some(0); // Filled in in accept_channel
// Note this is only exposed in cfg(test):
pub(super) struct ChannelHolder<Signer: Sign> {
pub(super) by_id: HashMap<[u8; 32], Channel<Signer>>,
+ /// SCIDs (and outbound SCID aliases) to the real channel id. Outbound SCID aliases are added
+ /// here once the channel is available for normal use, with SCIDs being added once the funding
+ /// transaction is confirmed at the channel's required confirmation depth.
pub(super) short_to_id: HashMap<u64, [u8; 32]>,
- /// short channel id -> forward infos. Key of 0 means payments received
+ /// SCID/SCID Alias -> forward infos. Key of 0 means payments received.
+ ///
+ /// Note that because we may have an SCID Alias as the key we can have two entries per channel,
+ /// though in practice we probably won't be receiving HTLCs for a channel both via the alias
+ /// and via the classic SCID.
+ ///
/// Note that while this is held in the same mutex as the channels themselves, no consistency
/// guarantees are made about the existence of a channel with the short id here, nor the short
/// ids in the PendingHTLCInfo!
/// Locked *after* channel_state.
pending_outbound_payments: Mutex<HashMap<PaymentId, PendingOutboundPayment>>,
+ /// The set of outbound SCID aliases across all our channels, including unconfirmed channels
+ /// and some closed channels which reached a usable state prior to being closed. This is used
+ /// only to avoid duplicates, and is not persisted explicitly to disk, but rebuilt from the
+ /// active channel list on load.
+ outbound_scid_aliases: Mutex<HashSet<u64>>,
+
our_network_key: SecretKey,
our_network_pubkey: PublicKey,
pub funding_txo: Option<OutPoint>,
/// The position of the funding transaction in the chain. None if the funding transaction has
/// not yet been confirmed and the channel fully opened.
+ ///
+ /// Note that if [`inbound_scid_alias`] is set, it must be used for invoices and inbound
+ /// payments instead of this. See [`get_inbound_payment_scid`].
+ ///
+ /// [`inbound_scid_alias`]: Self::inbound_scid_alias
+ /// [`get_inbound_payment_scid`]: Self::get_inbound_payment_scid
pub short_channel_id: Option<u64>,
+ /// An optional [`short_channel_id`] alias for this channel, randomly generated by our
+ /// counterparty and usable in place of [`short_channel_id`] in invoice route hints. Our
+ /// counterparty will recognize the alias provided here in place of the [`short_channel_id`]
+ /// when they see a payment to be routed to us.
+ ///
+ /// [`short_channel_id`]: Self::short_channel_id
+ pub inbound_scid_alias: Option<u64>,
/// The value, in satoshis, of this channel as appears in the funding output
pub channel_value_satoshis: u64,
/// The value, in satoshis, that must always be held in the channel for us. This value ensures
pub is_public: bool,
}
+impl ChannelDetails {
+ /// Gets the SCID which should be used to identify this channel for inbound payments. This
+ /// should be used for providing invoice hints or in any other context where our counterparty
+ /// will forward a payment to us.
+ pub fn get_inbound_payment_scid(&self) -> Option<u64> {
+ self.inbound_scid_alias.or(self.short_channel_id)
+ }
+}
+
/// If a payment fails to send, it can be in one of several states. This enum is returned as the
/// Err() type describing which state the payment is in, see the description of individual enum
/// states for more.
}
}
+macro_rules! update_maps_on_chan_removal {
+ ($self: expr, $short_to_id: expr, $channel: expr) => {
+ if let Some(short_id) = $channel.get_short_channel_id() {
+ $short_to_id.remove(&short_id);
+ } else {
+ // If the channel was never confirmed on-chain prior to its closure, remove the
+ // outbound SCID alias we used for it from the collision-prevention set. While we
+ // generally want to avoid ever re-using an outbound SCID alias across all channels, we
+ // also don't want a counterparty to be able to trivially cause a memory leak by simply
+ // opening a million channels with us which are closed before we ever reach the funding
+ // stage.
+ let alias_removed = $self.outbound_scid_aliases.lock().unwrap().remove(&$channel.outbound_scid_alias());
+ debug_assert!(alias_removed);
+ }
+ $short_to_id.remove(&$channel.outbound_scid_alias());
+ }
+}
+
/// Returns (boolean indicating if we should remove the Channel object from memory, a mapped error)
macro_rules! convert_chan_err {
($self: ident, $err: expr, $short_to_id: expr, $channel: expr, $channel_id: expr) => {
},
ChannelError::Close(msg) => {
log_error!($self.logger, "Closing channel {} due to close-required error: {}", log_bytes!($channel_id[..]), msg);
- if let Some(short_id) = $channel.get_short_channel_id() {
- $short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!($self, $short_to_id, $channel);
let shutdown_res = $channel.force_shutdown(true);
(true, MsgHandleErrInternal::from_finish_shutdown(msg, *$channel_id, $channel.get_user_id(),
shutdown_res, $self.get_channel_update_for_broadcast(&$channel).ok()))
},
ChannelError::CloseDelayBroadcast(msg) => {
log_error!($self.logger, "Channel {} need to be shutdown but closing transactions not broadcast due to {}", log_bytes!($channel_id[..]), msg);
- if let Some(short_id) = $channel.get_short_channel_id() {
- $short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!($self, $short_to_id, $channel);
let shutdown_res = $channel.force_shutdown(false);
(true, MsgHandleErrInternal::from_finish_shutdown(msg, *$channel_id, $channel.get_user_id(),
shutdown_res, $self.get_channel_update_for_broadcast(&$channel).ok()))
}
macro_rules! remove_channel {
- ($channel_state: expr, $entry: expr) => {
+ ($self: expr, $channel_state: expr, $entry: expr) => {
{
let channel = $entry.remove_entry().1;
- if let Some(short_id) = channel.get_short_channel_id() {
- $channel_state.short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!($self, $channel_state.short_to_id, channel);
channel
}
}
}
macro_rules! handle_monitor_err {
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, Vec::new(), Vec::new())
- };
($self: ident, $err: expr, $short_to_id: expr, $chan: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr, $chan_id: expr) => {
match $err {
ChannelMonitorUpdateErr::PermanentFailure => {
log_error!($self.logger, "Closing channel {} due to monitor update ChannelMonitorUpdateErr::PermanentFailure", log_bytes!($chan_id[..]));
- if let Some(short_id) = $chan.get_short_channel_id() {
- $short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!($self, $short_to_id, $chan);
// TODO: $failed_fails is dropped here, which will cause other channels to hit the
// chain in a confused state! We need to move them into the ChannelMonitor which
// will be responsible for failing backwards once things confirm on-chain.
}
res
} };
+ ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, COMMITMENT_UPDATE_ONLY) => { {
+ debug_assert!($action_type == RAACommitmentOrder::CommitmentFirst);
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, true, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ } };
+ ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, NO_UPDATE) => {
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ };
+ ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, Vec::new(), Vec::new(), Vec::new())
+ };
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr) => {
handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, $failed_forwards, $failed_fails, Vec::new())
- }
+ };
}
macro_rules! return_monitor_err {
}
}
+macro_rules! send_funding_locked {
+ ($short_to_id: expr, $pending_msg_events: expr, $channel: expr, $funding_locked_msg: expr) => {
+ $pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
+ node_id: $channel.get_counterparty_node_id(),
+ msg: $funding_locked_msg,
+ });
+ // Note that we may send a funding locked multiple times for a channel if we reconnect, so
+ // we allow collisions, but we shouldn't ever be updating the channel ID pointed to.
+ let outbound_alias_insert = $short_to_id.insert($channel.outbound_scid_alias(), $channel.channel_id());
+ assert!(outbound_alias_insert.is_none() || outbound_alias_insert.unwrap() == $channel.channel_id(),
+ "SCIDs should never collide - ensure you weren't behind the chain tip by a full month when creating channels");
+ if let Some(real_scid) = $channel.get_short_channel_id() {
+ let scid_insert = $short_to_id.insert(real_scid, $channel.channel_id());
+ assert!(scid_insert.is_none() || scid_insert.unwrap() == $channel.channel_id(),
+ "SCIDs should never collide - ensure you weren't behind the chain tip by a full month when creating channels");
+ }
+ }
+}
+
macro_rules! handle_chan_restoration_locked {
($self: ident, $channel_lock: expr, $channel_state: expr, $channel_entry: expr,
$raa: expr, $commitment_update: expr, $order: expr, $chanmon_update: expr,
$pending_forwards: expr, $funding_broadcastable: expr, $funding_locked: expr, $announcement_sigs: expr) => { {
let mut htlc_forwards = None;
- let counterparty_node_id = $channel_entry.get().get_counterparty_node_id();
let chanmon_update: Option<ChannelMonitorUpdate> = $chanmon_update; // Force type-checking to resolve
let chanmon_update_is_none = chanmon_update.is_none();
+ let counterparty_node_id = $channel_entry.get().get_counterparty_node_id();
let res = loop {
let forwards: Vec<(PendingHTLCInfo, u64)> = $pending_forwards; // Force type-checking to resolve
if !forwards.is_empty() {
// Similar to the above, this implies that we're letting the funding_locked fly
// before it should be allowed to.
assert!(chanmon_update.is_none());
- $channel_state.pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
- node_id: counterparty_node_id,
- msg,
- });
- $channel_state.short_to_id.insert($channel_entry.get().get_short_channel_id().unwrap(), $channel_entry.get().channel_id());
+ send_funding_locked!($channel_state.short_to_id, $channel_state.pending_msg_events, $channel_entry.get(), msg);
}
if let Some(msg) = $announcement_sigs {
$channel_state.pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
claimable_htlcs: HashMap::new(),
pending_msg_events: Vec::new(),
}),
+ outbound_scid_aliases: Mutex::new(HashSet::new()),
pending_inbound_payments: Mutex::new(HashMap::new()),
pending_outbound_payments: Mutex::new(HashMap::new()),
&self.default_configuration
}
+ fn create_and_insert_outbound_scid_alias(&self) -> u64 {
+ let height = self.best_block.read().unwrap().height();
+ let mut outbound_scid_alias = 0;
+ let mut i = 0;
+ loop {
+ if cfg!(fuzzing) { // fuzzing chacha20 doesn't use the key at all so we always get the same alias
+ outbound_scid_alias += 1;
+ } else {
+ outbound_scid_alias = fake_scid::Namespace::OutboundAlias.get_fake_scid(height, &self.genesis_hash, &self.fake_scid_rand_bytes, &self.keys_manager);
+ }
+ if outbound_scid_alias != 0 && self.outbound_scid_aliases.lock().unwrap().insert(outbound_scid_alias) {
+ break;
+ }
+ i += 1;
+ if i > 1_000_000 { panic!("Your RNG is busted or we ran out of possible outbound SCID aliases (which should never happen before we run out of memory to store channels"); }
+ }
+ outbound_scid_alias
+ }
+
/// Creates a new outbound channel to the given remote node and with the given value.
///
/// `user_channel_id` will be provided back as in
let per_peer_state = self.per_peer_state.read().unwrap();
match per_peer_state.get(&their_network_key) {
Some(peer_state) => {
+ let outbound_scid_alias = self.create_and_insert_outbound_scid_alias();
let peer_state = peer_state.lock().unwrap();
let their_features = &peer_state.latest_features;
let config = if override_config.is_some() { override_config.as_ref().unwrap() } else { &self.default_configuration };
- Channel::new_outbound(&self.fee_estimator, &self.keys_manager, their_network_key, their_features,
- channel_value_satoshis, push_msat, user_channel_id, config, self.best_block.read().unwrap().height())?
+ match Channel::new_outbound(&self.fee_estimator, &self.keys_manager, their_network_key,
+ their_features, channel_value_satoshis, push_msat, user_channel_id, config,
+ self.best_block.read().unwrap().height(), outbound_scid_alias)
+ {
+ Ok(res) => res,
+ Err(e) => {
+ self.outbound_scid_aliases.lock().unwrap().remove(&outbound_scid_alias);
+ return Err(e);
+ },
+ }
},
None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", their_network_key) }),
}
},
funding_txo: channel.get_funding_txo(),
short_channel_id: channel.get_short_channel_id(),
+ inbound_scid_alias: channel.latest_inbound_scid_alias(),
channel_value_satoshis: channel.get_value_satoshis(),
unspendable_punishment_reserve: to_self_reserve_satoshis,
balance_msat,
if let Some(monitor_update) = monitor_update {
if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
let (result, is_permanent) =
- handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, false, false, Vec::new(), Vec::new(), Vec::new(), chan_entry.key());
+ handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
if is_permanent {
- remove_channel!(channel_state, chan_entry);
+ remove_channel!(self, channel_state, chan_entry);
break result;
}
}
});
if chan_entry.get().is_shutdown() {
- let channel = remove_channel!(channel_state, chan_entry);
+ let channel = remove_channel!(self, channel_state, chan_entry);
if let Ok(channel_update) = self.get_channel_update_for_broadcast(&channel) {
channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
msg: channel_update
return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
}
}
- if let Some(short_id) = chan.get().get_short_channel_id() {
- channel_state.short_to_id.remove(&short_id);
- }
if peer_node_id.is_some() {
if let Some(peer_msg) = peer_msg {
self.issue_channel_close_events(chan.get(),ClosureReason::CounterpartyForceClosed { peer_msg: peer_msg.to_string() });
} else {
self.issue_channel_close_events(chan.get(),ClosureReason::HolderForceClosed);
}
- chan.remove_entry().1
+ remove_channel!(self, channel_state, chan)
} else {
return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
}
}
ChannelError::Close(msg) => {
log_trace!(self.logger, "Closing channel {} due to Close-required error: {}", log_bytes!(chan.key()[..]), msg);
- let (channel_id, mut channel) = chan.remove_entry();
- if let Some(short_id) = channel.get_short_channel_id() {
- channel_state.short_to_id.remove(&short_id);
- }
+ let mut channel = remove_channel!(self, channel_state, chan);
// ChannelClosed event is generated by handle_error for us.
- Err(MsgHandleErrInternal::from_finish_shutdown(msg, channel_id, channel.get_user_id(), channel.force_shutdown(true), self.get_channel_update_for_broadcast(&channel).ok()))
+ Err(MsgHandleErrInternal::from_finish_shutdown(msg, channel.channel_id(), channel.get_user_id(), channel.force_shutdown(true), self.get_channel_update_for_broadcast(&channel).ok()))
},
ChannelError::CloseDelayBroadcast(_) => { panic!("Wait is only generated on receipt of channel_reestablish, which is handled by try_chan_entry, we don't bother to support it here"); }
};
let ret_err = match res {
Ok(Some((update_fee, commitment_signed, monitor_update))) => {
if let Err(e) = self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
- let (res, drop) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, false, true, Vec::new(), Vec::new(), Vec::new(), chan_id);
+ let (res, drop) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, chan_id, COMMITMENT_UPDATE_ONLY);
if drop { retain_channel = false; }
res
} else {
return Err(MsgHandleErrInternal::send_err_msg_no_close("No inbound channels accepted".to_owned(), msg.temporary_channel_id.clone()));
}
- let mut channel = Channel::new_from_req(&self.fee_estimator, &self.keys_manager, counterparty_node_id.clone(),
- &their_features, msg, 0, &self.default_configuration, self.best_block.read().unwrap().height(), &self.logger)
- .map_err(|e| MsgHandleErrInternal::from_chan_no_close(e, msg.temporary_channel_id))?;
+ let outbound_scid_alias = self.create_and_insert_outbound_scid_alias();
+ let mut channel = match Channel::new_from_req(&self.fee_estimator, &self.keys_manager,
+ counterparty_node_id.clone(), &their_features, msg, 0, &self.default_configuration,
+ self.best_block.read().unwrap().height(), &self.logger, outbound_scid_alias)
+ {
+ Err(e) => {
+ self.outbound_scid_aliases.lock().unwrap().remove(&outbound_scid_alias);
+ return Err(MsgHandleErrInternal::from_chan_no_close(e, msg.temporary_channel_id));
+ },
+ Ok(res) => res
+ };
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(channel.channel_id()) {
- hash_map::Entry::Occupied(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("temporary_channel_id collision!".to_owned(), msg.temporary_channel_id.clone())),
+ hash_map::Entry::Occupied(_) => {
+ self.outbound_scid_aliases.lock().unwrap().remove(&outbound_scid_alias);
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("temporary_channel_id collision!".to_owned(), msg.temporary_channel_id.clone()))
+ },
hash_map::Entry::Vacant(entry) => {
if !self.default_configuration.manually_accept_inbound_channels {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
if let Some(monitor_update) = monitor_update {
if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
let (result, is_permanent) =
- handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, false, false, Vec::new(), Vec::new(), Vec::new(), chan_entry.key());
+ handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
if is_permanent {
- remove_channel!(channel_state, chan_entry);
+ remove_channel!(self, channel_state, chan_entry);
break result;
}
}
// also implies there are no pending HTLCs left on the channel, so we can
// fully delete it from tracking (the channel monitor is still around to
// watch for old state broadcasts)!
- if let Some(short_id) = chan_entry.get().get_short_channel_id() {
- channel_state.short_to_id.remove(&short_id);
- }
- (tx, Some(chan_entry.remove_entry().1))
+ (tx, Some(remove_channel!(self, channel_state, chan_entry)))
} else { (tx, None) }
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
let by_id = &mut channel_state.by_id;
- let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
- if let Some(mut chan) = by_id.remove(&funding_outpoint.to_channel_id()) {
- if let Some(short_id) = chan.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
+ if let hash_map::Entry::Occupied(chan_entry) = by_id.entry(funding_outpoint.to_channel_id()) {
+ let mut chan = remove_channel!(self, channel_state, chan_entry);
failed_channels.push(chan.force_shutdown(false));
if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
if let Some((commitment_update, monitor_update)) = commitment_opt {
if let Err(e) = self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
has_monitor_update = true;
- let (res, close_channel) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, false, true, Vec::new(), Vec::new(), Vec::new(), channel_id);
+ let (res, close_channel) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, channel_id, COMMITMENT_UPDATE_ONLY);
handle_errors.push((chan.get_counterparty_node_id(), res));
if close_channel { return false; }
} else {
if let Some(tx) = tx_opt {
// We're done with this channel. We got a closing_signed and sent back
// a closing_signed with a closing transaction to broadcast.
- if let Some(short_id) = chan.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
-
if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
msg: update
log_info!(self.logger, "Broadcasting {}", log_tx!(tx));
self.tx_broadcaster.broadcast_transaction(&tx);
+ update_maps_on_chan_removal!(self, short_to_id, chan);
false
} else { true }
},
/// Legacy version of [`create_inbound_payment`]. Use this method if you wish to share
/// serialized state with LDK node(s) running 0.0.103 and earlier.
///
+ /// May panic if `invoice_expiry_delta_secs` is greater than one year.
+ ///
/// # Note
/// This method is deprecated and will be removed soon.
///
/// If you need exact expiry semantics, you should enforce them upon receipt of
/// [`PaymentReceived`].
///
- /// May panic if `invoice_expiry_delta_secs` is greater than one year.
- ///
/// Note that invoices generated for inbound payments should have their `min_final_cltv_expiry`
/// set to at least [`MIN_FINAL_CLTV_EXPIRY`].
///
/// Legacy version of [`create_inbound_payment_for_hash`]. Use this method if you wish to share
/// serialized state with LDK node(s) running 0.0.103 and earlier.
///
+ /// May panic if `invoice_expiry_delta_secs` is greater than one year.
+ ///
/// # Note
/// This method is deprecated and will be removed soon.
///
let mut channel_state = self.channel_state.lock().unwrap();
let best_block = self.best_block.read().unwrap();
loop {
- let scid_candidate = fake_scid::get_phantom_scid(&self.fake_scid_rand_bytes, best_block.height(), &self.genesis_hash, &self.keys_manager);
+ let scid_candidate = fake_scid::Namespace::Phantom.get_fake_scid(best_block.height(), &self.genesis_hash, &self.fake_scid_rand_bytes, &self.keys_manager);
// Ensure the generated scid doesn't conflict with a real channel.
match channel_state.short_to_id.entry(scid_candidate) {
hash_map::Entry::Occupied(_) => continue,
}));
}
if let Some(funding_locked) = funding_locked_opt {
- pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
- node_id: channel.get_counterparty_node_id(),
- msg: funding_locked,
- });
+ send_funding_locked!(short_to_id, pending_msg_events, channel, funding_locked);
if channel.is_usable() {
log_trace!(self.logger, "Sending funding_locked with private initial channel_update for our counterparty on channel {}", log_bytes!(channel.channel_id()));
pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
} else {
log_trace!(self.logger, "Sending funding_locked WITHOUT channel_update for {}", log_bytes!(channel.channel_id()));
}
- short_to_id.insert(channel.get_short_channel_id().unwrap(), channel.channel_id());
}
if let Some(announcement_sigs) = announcement_sigs {
log_trace!(self.logger, "Sending announcement_signatures for channel {}", log_bytes!(channel.channel_id()));
}
}
} else if let Err(reason) = res {
- if let Some(short_id) = channel.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!(self, short_to_id, channel);
// It looks like our counterparty went on-chain or funding transaction was
// reorged out of the main chain. Close the channel.
failed_channels.push(channel.force_shutdown(true));
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
+ let short_to_id = &mut channel_state.short_to_id;
if no_connection_possible {
log_debug!(self.logger, "Failing all channels with {} due to no_connection_possible", log_pubkey!(counterparty_node_id));
channel_state.by_id.retain(|_, chan| {
if chan.get_counterparty_node_id() == *counterparty_node_id {
- if let Some(short_id) = chan.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!(self, short_to_id, chan);
failed_channels.push(chan.force_shutdown(true));
if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
if chan.get_counterparty_node_id() == *counterparty_node_id {
chan.remove_uncommitted_htlcs_and_mark_paused(&self.logger);
if chan.is_shutdown() {
- if let Some(short_id) = chan.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
+ update_maps_on_chan_removal!(self, short_to_id, chan);
self.issue_channel_close_events(chan, ClosureReason::DisconnectedPeer);
return false;
} else {
});
impl_writeable_tlv_based!(ChannelDetails, {
+ (1, inbound_scid_alias, option),
(2, channel_id, required),
(4, counterparty, required),
(6, funding_txo, option),
}
}
+ let mut outbound_scid_aliases = HashSet::new();
+ for (chan_id, chan) in by_id.iter_mut() {
+ if chan.outbound_scid_alias() == 0 {
+ let mut outbound_scid_alias;
+ loop {
+ outbound_scid_alias = fake_scid::Namespace::OutboundAlias
+ .get_fake_scid(best_block_height, &genesis_hash, fake_scid_rand_bytes.as_ref().unwrap(), &args.keys_manager);
+ if outbound_scid_aliases.insert(outbound_scid_alias) { break; }
+ }
+ chan.set_outbound_scid_alias(outbound_scid_alias);
+ } else if !outbound_scid_aliases.insert(chan.outbound_scid_alias()) {
+ // Note that in rare cases its possible to hit this while reading an older
+ // channel if we just happened to pick a colliding outbound alias above.
+ log_error!(args.logger, "Got duplicate outbound SCID alias; {}", chan.outbound_scid_alias());
+ return Err(DecodeError::InvalidValue);
+ }
+ if chan.is_usable() {
+ if short_to_id.insert(chan.outbound_scid_alias(), *chan_id).is_some() {
+ // Note that in rare cases its possible to hit this while reading an older
+ // channel if we just happened to pick a colliding outbound alias above.
+ log_error!(args.logger, "Got duplicate outbound SCID alias; {}", chan.outbound_scid_alias());
+ return Err(DecodeError::InvalidValue);
+ }
+ }
+ }
+
let inbound_pmt_key_material = args.keys_manager.get_inbound_payment_key_material();
let expanded_inbound_key = inbound_payment::ExpandedKey::new(&inbound_pmt_key_material);
let channel_manager = ChannelManager {
inbound_payment_key: expanded_inbound_key,
pending_inbound_payments: Mutex::new(pending_inbound_payments),
pending_outbound_payments: Mutex::new(pending_outbound_payments.unwrap()),
+
+ outbound_scid_aliases: Mutex::new(outbound_scid_aliases),
fake_scid_rand_bytes: fake_scid_rand_bytes.unwrap(),
our_network_key,
impl <T: $feature> Features<T> {
/// Set this feature as optional.
- pub fn $optional_setter(mut self) -> Self {
+ pub fn $optional_setter(&mut self) {
<T as $feature>::set_optional_bit(&mut self.flags);
- self
}
/// Set this feature as required.
- pub fn $required_setter(mut self) -> Self {
+ pub fn $required_setter(&mut self) {
<T as $feature>::set_required_bit(&mut self.flags);
- self
}
/// Checks if this feature is supported.
/// [`PaymentParameters::for_keysend`]: crate::routing::router::PaymentParameters::for_keysend
/// [`find_route`]: crate::routing::router::find_route
pub(crate) fn for_keysend() -> InvoiceFeatures {
- InvoiceFeatures::empty().set_variable_length_onion_optional()
+ let mut res = InvoiceFeatures::empty();
+ res.set_variable_length_onion_optional();
+ res
}
}
assert!(!features.requires_unknown_bits());
assert!(!features.supports_unknown_bits());
- let features = ChannelFeatures::empty().set_unknown_feature_required();
+ let mut features = ChannelFeatures::empty();
+ features.set_unknown_feature_required();
assert!(features.requires_unknown_bits());
assert!(features.supports_unknown_bits());
- let features = ChannelFeatures::empty().set_unknown_feature_optional();
+ let mut features = ChannelFeatures::empty();
+ features.set_unknown_feature_optional();
assert!(!features.requires_unknown_bits());
assert!(features.supports_unknown_bits());
}
fn convert_to_context_with_unknown_flags() {
// Ensure the `from` context has fewer known feature bytes than the `to` context.
assert!(InvoiceFeatures::known().flags.len() < NodeFeatures::known().flags.len());
- let invoice_features = InvoiceFeatures::known().set_unknown_feature_optional();
+ let mut invoice_features = InvoiceFeatures::known();
+ invoice_features.set_unknown_feature_optional();
assert!(invoice_features.supports_unknown_bits());
let node_features: NodeFeatures = invoice_features.to_context();
assert!(!node_features.supports_unknown_bits());
#[test]
fn set_feature_bits() {
- let features = InvoiceFeatures::empty()
- .set_basic_mpp_optional()
- .set_payment_secret_required();
+ let mut features = InvoiceFeatures::empty();
+ features.set_basic_mpp_optional();
+ features.set_payment_secret_required();
assert!(features.supports_basic_mpp());
assert!(!features.requires_basic_mpp());
assert!(features.requires_payment_secret());
fn test_channel_type_mapping() {
// If we map an InvoiceFeatures with StaticRemoteKey optional, it should map into a
// required-StaticRemoteKey ChannelTypeFeatures.
- let init_features = InitFeatures::empty().set_static_remote_key_optional();
+ let mut init_features = InitFeatures::empty();
+ init_features.set_static_remote_key_optional();
let converted_features = ChannelTypeFeatures::from_counterparty_init(&init_features);
assert_eq!(converted_features, ChannelTypeFeatures::only_static_remote_key());
assert!(!converted_features.supports_any_optional_bits());
(chan_announcement.1, chan_announcement.2, chan_announcement.3, chan_announcement.4)
}
+pub fn create_unannounced_chan_between_nodes_with_value<'a, 'b, 'c, 'd>(nodes: &'a Vec<Node<'b, 'c, 'd>>, a: usize, b: usize, channel_value: u64, push_msat: u64, a_flags: InitFeatures, b_flags: InitFeatures) -> (msgs::FundingLocked, Transaction) {
+ let mut no_announce_cfg = test_default_channel_config();
+ no_announce_cfg.channel_options.announced_channel = false;
+ nodes[a].node.create_channel(nodes[b].node.get_our_node_id(), channel_value, push_msat, 42, Some(no_announce_cfg)).unwrap();
+ let open_channel = get_event_msg!(nodes[a], MessageSendEvent::SendOpenChannel, nodes[b].node.get_our_node_id());
+ nodes[b].node.handle_open_channel(&nodes[a].node.get_our_node_id(), a_flags, &open_channel);
+ let accept_channel = get_event_msg!(nodes[b], MessageSendEvent::SendAcceptChannel, nodes[a].node.get_our_node_id());
+ nodes[a].node.handle_accept_channel(&nodes[b].node.get_our_node_id(), b_flags, &accept_channel);
+
+ let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[a], channel_value, 42);
+ nodes[a].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
+ nodes[b].node.handle_funding_created(&nodes[a].node.get_our_node_id(), &get_event_msg!(nodes[a], MessageSendEvent::SendFundingCreated, nodes[b].node.get_our_node_id()));
+ check_added_monitors!(nodes[b], 1);
+
+ let cs_funding_signed = get_event_msg!(nodes[b], MessageSendEvent::SendFundingSigned, nodes[a].node.get_our_node_id());
+ nodes[a].node.handle_funding_signed(&nodes[b].node.get_our_node_id(), &cs_funding_signed);
+ check_added_monitors!(nodes[a], 1);
+
+ let conf_height = core::cmp::max(nodes[a].best_block_info().1 + 1, nodes[b].best_block_info().1 + 1);
+ confirm_transaction_at(&nodes[a], &tx, conf_height);
+ connect_blocks(&nodes[a], CHAN_CONFIRM_DEPTH - 1);
+ confirm_transaction_at(&nodes[b], &tx, conf_height);
+ connect_blocks(&nodes[b], CHAN_CONFIRM_DEPTH - 1);
+ let as_funding_locked = get_event_msg!(nodes[a], MessageSendEvent::SendFundingLocked, nodes[b].node.get_our_node_id());
+ nodes[a].node.handle_funding_locked(&nodes[b].node.get_our_node_id(), &get_event_msg!(nodes[b], MessageSendEvent::SendFundingLocked, nodes[a].node.get_our_node_id()));
+ let as_update = get_event_msg!(nodes[a], MessageSendEvent::SendChannelUpdate, nodes[b].node.get_our_node_id());
+ nodes[b].node.handle_funding_locked(&nodes[a].node.get_our_node_id(), &as_funding_locked);
+ let bs_update = get_event_msg!(nodes[b], MessageSendEvent::SendChannelUpdate, nodes[a].node.get_our_node_id());
+
+ nodes[a].node.handle_channel_update(&nodes[b].node.get_our_node_id(), &bs_update);
+ nodes[b].node.handle_channel_update(&nodes[a].node.get_our_node_id(), &as_update);
+
+ let mut found_a = false;
+ for chan in nodes[a].node.list_usable_channels() {
+ if chan.channel_id == as_funding_locked.channel_id {
+ assert!(!found_a);
+ found_a = true;
+ assert!(!chan.is_public);
+ }
+ }
+ assert!(found_a);
+
+ let mut found_b = false;
+ for chan in nodes[b].node.list_usable_channels() {
+ if chan.channel_id == as_funding_locked.channel_id {
+ assert!(!found_b);
+ found_b = true;
+ assert!(!chan.is_public);
+ }
+ }
+ assert!(found_b);
+
+ (as_funding_locked, tx)
+}
+
pub fn update_nodes_with_chan_announce<'a, 'b, 'c, 'd>(nodes: &'a Vec<Node<'b, 'c, 'd>>, a: usize, b: usize, ann: &msgs::ChannelAnnouncement, upd_1: &msgs::ChannelUpdate, upd_2: &msgs::ChannelUpdate) {
nodes[a].node.broadcast_node_announcement([0, 0, 0], [0; 32], Vec::new());
let a_events = nodes[a].node.get_and_clear_pending_msg_events();
node.net_graph_msg_handler.handle_channel_update(upd_2).unwrap();
node.net_graph_msg_handler.handle_node_announcement(&a_node_announcement).unwrap();
node.net_graph_msg_handler.handle_node_announcement(&b_node_announcement).unwrap();
+
+ // Note that channel_updates are also delivered to ChannelManagers to ensure we have
+ // forwarding info for local channels even if its not accepted in the network graph.
+ node.node.handle_channel_update(&nodes[a].node.get_our_node_id(), &upd_1);
+ node.node.handle_channel_update(&nodes[b].node.get_our_node_id(), &upd_2);
}
}
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::RoutingFees;
-use routing::router::{PaymentParameters, Route, RouteHop, RouteHint, RouteHintHop, RouteParameters, find_route, get_route};
+use routing::router::{PaymentParameters, Route, RouteHop, RouteParameters, find_route, get_route};
use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures};
use ln::msgs;
use ln::msgs::{ChannelMessageHandler, RoutingMessageHandler, ErrorAction};
check_added_monitors!(nodes[1], 1);
}
-fn do_test_1_conf_open(connect_style: ConnectStyle) {
- // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
- // tests that we properly send one in that case.
- let mut alice_config = UserConfig::default();
- alice_config.own_channel_config.minimum_depth = 1;
- alice_config.channel_options.announced_channel = true;
- alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
- let mut bob_config = UserConfig::default();
- bob_config.own_channel_config.minimum_depth = 1;
- bob_config.channel_options.announced_channel = true;
- bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
- 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, &[Some(alice_config), Some(bob_config)]);
- let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
- *nodes[0].connect_style.borrow_mut() = connect_style;
-
- let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
- mine_transaction(&nodes[1], &tx);
- nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id()));
- assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
-
- mine_transaction(&nodes[0], &tx);
- let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
- assert_eq!(as_msg_events.len(), 2);
- let as_funding_locked = if let MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = as_msg_events[0] {
- assert_eq!(*node_id, nodes[1].node.get_our_node_id());
- msg.clone()
- } else { panic!("Unexpected event"); };
- if let MessageSendEvent::SendChannelUpdate { ref node_id, msg: _ } = as_msg_events[1] {
- assert_eq!(*node_id, nodes[1].node.get_our_node_id());
- } else { panic!("Unexpected event"); }
-
- nodes[1].node.handle_funding_locked(&nodes[0].node.get_our_node_id(), &as_funding_locked);
- let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
- assert_eq!(bs_msg_events.len(), 1);
- if let MessageSendEvent::SendChannelUpdate { ref node_id, msg: _ } = bs_msg_events[0] {
- assert_eq!(*node_id, nodes[0].node.get_our_node_id());
- } else { panic!("Unexpected event"); }
-
- send_payment(&nodes[0], &[&nodes[1]], 100_000);
-
- // After 6 confirmations, as required by the spec, we'll send announcement_signatures and
- // broadcast the channel_announcement (but not before exactly 6 confirmations).
- connect_blocks(&nodes[0], 4);
- assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
- connect_blocks(&nodes[0], 1);
- nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendAnnouncementSignatures, nodes[1].node.get_our_node_id()));
- assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
-
- connect_blocks(&nodes[1], 5);
- let bs_announce_events = nodes[1].node.get_and_clear_pending_msg_events();
- assert_eq!(bs_announce_events.len(), 2);
- let bs_announcement_sigs = if let MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } = bs_announce_events[0] {
- assert_eq!(*node_id, nodes[0].node.get_our_node_id());
- msg.clone()
- } else { panic!("Unexpected event"); };
- let (bs_announcement, bs_update) = if let MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } = bs_announce_events[1] {
- (msg.clone(), update_msg.clone())
- } else { panic!("Unexpected event"); };
-
- nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
- let as_announce_events = nodes[0].node.get_and_clear_pending_msg_events();
- assert_eq!(as_announce_events.len(), 1);
- let (announcement, as_update) = if let MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } = as_announce_events[0] {
- (msg.clone(), update_msg.clone())
- } else { panic!("Unexpected event"); };
- assert_eq!(announcement, bs_announcement);
-
- for node in nodes {
- assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
- node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
- node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
- }
-}
-#[test]
-fn test_1_conf_open() {
- do_test_1_conf_open(ConnectStyle::BestBlockFirst);
- do_test_1_conf_open(ConnectStyle::TransactionsFirst);
- do_test_1_conf_open(ConnectStyle::FullBlockViaListen);
-}
-
fn do_test_sanity_on_in_flight_opens(steps: u8) {
// Previously, we had issues deserializing channels when we hadn't connected the first block
// after creation. To catch that and similar issues, we lean on the Node::drop impl to test
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);
- //Force duplicate channel ids
+ // Force duplicate randomness for every get-random call
for node in nodes.iter() {
*node.keys_manager.override_random_bytes.lock().unwrap() = Some([0; 32]);
}
nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &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 a channel_id collision
+ // Create a second channel with the same random values. This used to panic due to a colliding
+ // channel_id, but now panics due to a colliding outbound SCID alias.
assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
}
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
// We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
- if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), 1000000, 1000000, 0, &low_our_to_self_config, 0) {
+ if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) },
+ &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), &InitFeatures::known(), 1000000, 1000000, 0,
+ &low_our_to_self_config, 0, 42)
+ {
match error {
APIError::APIMisuseError { err } => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
_ => panic!("Unexpected event"),
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, &nodes[0].logger) {
+ 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, 42)
+ {
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"),
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, &nodes[0].logger) {
+ 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, 42)
+ {
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"),
assert!(chans_disabled.is_empty());
}
-#[test]
-fn test_priv_forwarding_rejection() {
- // If we have a private channel with outbound liquidity, and
- // UserConfig::accept_forwards_to_priv_channels is set to false, we should reject any attempts
- // to forward through that channel.
- let chanmon_cfgs = create_chanmon_cfgs(3);
- let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
- let mut no_announce_cfg = test_default_channel_config();
- no_announce_cfg.channel_options.announced_channel = false;
- no_announce_cfg.accept_forwards_to_priv_channels = false;
- let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(no_announce_cfg), None]);
- let persister: test_utils::TestPersister;
- let new_chain_monitor: test_utils::TestChainMonitor;
- let nodes_1_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
- let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-
- let chan_id_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known()).2;
-
- // Note that the create_*_chan functions in utils requires announcement_signatures, which we do
- // not send for private channels.
- nodes[1].node.create_channel(nodes[2].node.get_our_node_id(), 1_000_000, 500_000_000, 42, None).unwrap();
- let open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[2].node.get_our_node_id());
- nodes[2].node.handle_open_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel);
- let accept_channel = get_event_msg!(nodes[2], MessageSendEvent::SendAcceptChannel, nodes[1].node.get_our_node_id());
- nodes[1].node.handle_accept_channel(&nodes[2].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
-
- let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[1], 1_000_000, 42);
- nodes[1].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
- nodes[2].node.handle_funding_created(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingCreated, nodes[2].node.get_our_node_id()));
- check_added_monitors!(nodes[2], 1);
-
- let cs_funding_signed = get_event_msg!(nodes[2], MessageSendEvent::SendFundingSigned, nodes[1].node.get_our_node_id());
- nodes[1].node.handle_funding_signed(&nodes[2].node.get_our_node_id(), &cs_funding_signed);
- check_added_monitors!(nodes[1], 1);
-
- let conf_height = core::cmp::max(nodes[1].best_block_info().1 + 1, nodes[2].best_block_info().1 + 1);
- confirm_transaction_at(&nodes[1], &tx, conf_height);
- connect_blocks(&nodes[1], CHAN_CONFIRM_DEPTH - 1);
- confirm_transaction_at(&nodes[2], &tx, conf_height);
- connect_blocks(&nodes[2], CHAN_CONFIRM_DEPTH - 1);
- let as_funding_locked = get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[2].node.get_our_node_id());
- nodes[1].node.handle_funding_locked(&nodes[2].node.get_our_node_id(), &get_event_msg!(nodes[2], MessageSendEvent::SendFundingLocked, nodes[1].node.get_our_node_id()));
- get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
- nodes[2].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &as_funding_locked);
- get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
-
- assert!(nodes[0].node.list_usable_channels()[0].is_public);
- assert_eq!(nodes[1].node.list_usable_channels().len(), 2);
- assert!(!nodes[2].node.list_usable_channels()[0].is_public);
-
- // We should always be able to forward through nodes[1] as long as its out through a public
- // channel:
- send_payment(&nodes[2], &[&nodes[1], &nodes[0]], 10_000);
-
- // ... however, if we send to nodes[2], we will have to pass the private channel from nodes[1]
- // to nodes[2], which should be rejected:
- let route_hint = RouteHint(vec![RouteHintHop {
- src_node_id: nodes[1].node.get_our_node_id(),
- short_channel_id: nodes[2].node.list_channels()[0].short_channel_id.unwrap(),
- fees: RoutingFees { base_msat: 1000, proportional_millionths: 0 },
- cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA,
- htlc_minimum_msat: None,
- htlc_maximum_msat: None,
- }]);
- let last_hops = vec![route_hint];
- let (route, our_payment_hash, our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], last_hops, 10_000, TEST_FINAL_CLTV);
-
- nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
- check_added_monitors!(nodes[0], 1);
- let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
- nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
- commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false, true);
-
- let htlc_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
- assert!(htlc_fail_updates.update_add_htlcs.is_empty());
- assert_eq!(htlc_fail_updates.update_fail_htlcs.len(), 1);
- assert!(htlc_fail_updates.update_fail_malformed_htlcs.is_empty());
- assert!(htlc_fail_updates.update_fee.is_none());
-
- nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_fail_updates.update_fail_htlcs[0]);
- commitment_signed_dance!(nodes[0], nodes[1], htlc_fail_updates.commitment_signed, true, true);
- expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, nodes[2].node.list_channels()[0].short_channel_id.unwrap(), true);
-
- // Now disconnect nodes[1] from its peers and restart with accept_forwards_to_priv_channels set
- // to true. Sadly there is currently no way to change it at runtime.
-
- nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
- nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
-
- let nodes_1_serialized = nodes[1].node.encode();
- let mut monitor_a_serialized = test_utils::TestVecWriter(Vec::new());
- let mut monitor_b_serialized = test_utils::TestVecWriter(Vec::new());
- get_monitor!(nodes[1], chan_id_1).write(&mut monitor_a_serialized).unwrap();
- get_monitor!(nodes[1], cs_funding_signed.channel_id).write(&mut monitor_b_serialized).unwrap();
-
- persister = test_utils::TestPersister::new();
- let keys_manager = &chanmon_cfgs[1].keys_manager;
- new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[1].chain_source), nodes[1].tx_broadcaster.clone(), nodes[1].logger, node_cfgs[1].fee_estimator, &persister, keys_manager);
- nodes[1].chain_monitor = &new_chain_monitor;
-
- let mut monitor_a_read = &monitor_a_serialized.0[..];
- let mut monitor_b_read = &monitor_b_serialized.0[..];
- let (_, mut monitor_a) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut monitor_a_read, keys_manager).unwrap();
- let (_, mut monitor_b) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut monitor_b_read, keys_manager).unwrap();
- assert!(monitor_a_read.is_empty());
- assert!(monitor_b_read.is_empty());
-
- no_announce_cfg.accept_forwards_to_priv_channels = true;
-
- let mut nodes_1_read = &nodes_1_serialized[..];
- let (_, nodes_1_deserialized_tmp) = {
- let mut channel_monitors = HashMap::new();
- channel_monitors.insert(monitor_a.get_funding_txo().0, &mut monitor_a);
- channel_monitors.insert(monitor_b.get_funding_txo().0, &mut monitor_b);
- <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_1_read, ChannelManagerReadArgs {
- default_config: no_announce_cfg,
- keys_manager,
- fee_estimator: node_cfgs[1].fee_estimator,
- chain_monitor: nodes[1].chain_monitor,
- tx_broadcaster: nodes[1].tx_broadcaster.clone(),
- logger: nodes[1].logger,
- channel_monitors,
- }).unwrap()
- };
- assert!(nodes_1_read.is_empty());
- nodes_1_deserialized = nodes_1_deserialized_tmp;
-
- assert!(nodes[1].chain_monitor.watch_channel(monitor_a.get_funding_txo().0, monitor_a).is_ok());
- assert!(nodes[1].chain_monitor.watch_channel(monitor_b.get_funding_txo().0, monitor_b).is_ok());
- check_added_monitors!(nodes[1], 2);
- nodes[1].node = &nodes_1_deserialized;
-
- nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
- nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
- let as_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
- let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
- nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish);
- nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
- get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
- get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
-
- nodes[1].node.peer_connected(&nodes[2].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
- nodes[2].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
- let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[2].node.get_our_node_id());
- let cs_reestablish = get_event_msg!(nodes[2], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
- nodes[2].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
- nodes[1].node.handle_channel_reestablish(&nodes[2].node.get_our_node_id(), &cs_reestablish);
- get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
- get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
-
- nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
- check_added_monitors!(nodes[0], 1);
- pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], 10_000, our_payment_hash, our_payment_secret);
- claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], our_payment_preimage);
-}
-
#[test]
fn test_bump_penalty_txn_on_revoked_commitment() {
// In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to be sure
mod payment_tests;
#[cfg(test)]
#[allow(unused_mut)]
+mod priv_short_conf_tests;
+#[cfg(test)]
+#[allow(unused_mut)]
mod chanmon_update_fail_tests;
#[cfg(test)]
#[allow(unused_mut)]
pub channel_id: [u8; 32],
/// The per-commitment point of the second commitment transaction
pub next_per_commitment_point: PublicKey,
+ /// If set, provides a short_channel_id alias for this channel. The sender will accept payments
+ /// to be forwarded over this SCID and forward them to this messages' recipient.
+ pub short_channel_id_alias: Option<u64>,
}
/// A shutdown message to be sent or received from a peer
impl_writeable_msg!(FundingLocked, {
channel_id,
next_per_commitment_point,
-}, {});
+}, {
+ (1, short_channel_id_alias, option),
+});
impl Writeable for Init {
fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
let funding_locked = msgs::FundingLocked {
channel_id: [2; 32],
next_per_commitment_point: pubkey_1,
+ short_channel_id_alias: None,
};
let encoded_value = funding_locked.encode();
let target_value = hex::decode("0202020202020202020202020202020202020202020202020202020202020202031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f").unwrap();
let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config), Some(config), Some(node_2_cfg)]);
let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+ let channels = [create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()), create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known())];
for node in nodes.iter() {
*node.keys_manager.override_random_bytes.lock().unwrap() = Some([3; 32]);
}
- let channels = [create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()), create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known())];
let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 40000);
// positive case
send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000);
--- /dev/null
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! Tests that test ChannelManager behavior with fewer confirmations required than the default and
+//! other behavior that exists only on private channels or with a semi-trusted counterparty (eg
+//! LSP).
+
+use chain::Watch;
+use chain::channelmonitor::ChannelMonitor;
+use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, MIN_CLTV_EXPIRY_DELTA};
+use routing::network_graph::RoutingFees;
+use routing::router::{RouteHint, RouteHintHop};
+use ln::features::InitFeatures;
+use ln::msgs;
+use ln::msgs::{ChannelMessageHandler, RoutingMessageHandler};
+use util::enforcing_trait_impls::EnforcingSigner;
+use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
+use util::config::UserConfig;
+use util::ser::{Writeable, ReadableArgs};
+use util::test_utils;
+
+use prelude::*;
+use core::default::Default;
+
+use ln::functional_test_utils::*;
+
+use bitcoin::hash_types::BlockHash;
+
+#[test]
+fn test_priv_forwarding_rejection() {
+ // If we have a private channel with outbound liquidity, and
+ // UserConfig::accept_forwards_to_priv_channels is set to false, we should reject any attempts
+ // to forward through that channel.
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+ let mut no_announce_cfg = test_default_channel_config();
+ no_announce_cfg.accept_forwards_to_priv_channels = false;
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(no_announce_cfg), None]);
+ let persister: test_utils::TestPersister;
+ let new_chain_monitor: test_utils::TestChainMonitor;
+ let nodes_1_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ let chan_id_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known()).2;
+ let chan_id_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known()).0.channel_id;
+
+ // We should always be able to forward through nodes[1] as long as its out through a public
+ // channel:
+ send_payment(&nodes[2], &[&nodes[1], &nodes[0]], 10_000);
+
+ // ... however, if we send to nodes[2], we will have to pass the private channel from nodes[1]
+ // to nodes[2], which should be rejected:
+ let route_hint = RouteHint(vec![RouteHintHop {
+ src_node_id: nodes[1].node.get_our_node_id(),
+ short_channel_id: nodes[2].node.list_channels()[0].short_channel_id.unwrap(),
+ fees: RoutingFees { base_msat: 1000, proportional_millionths: 0 },
+ cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA,
+ htlc_minimum_msat: None,
+ htlc_maximum_msat: None,
+ }]);
+ let last_hops = vec![route_hint];
+ let (route, our_payment_hash, our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], last_hops, 10_000, TEST_FINAL_CLTV);
+
+ nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
+ nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
+ commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false, true);
+
+ let htlc_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+ assert!(htlc_fail_updates.update_add_htlcs.is_empty());
+ assert_eq!(htlc_fail_updates.update_fail_htlcs.len(), 1);
+ assert!(htlc_fail_updates.update_fail_malformed_htlcs.is_empty());
+ assert!(htlc_fail_updates.update_fee.is_none());
+
+ nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_fail_updates.update_fail_htlcs[0]);
+ commitment_signed_dance!(nodes[0], nodes[1], htlc_fail_updates.commitment_signed, true, true);
+ expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, nodes[2].node.list_channels()[0].short_channel_id.unwrap(), true);
+
+ // Now disconnect nodes[1] from its peers and restart with accept_forwards_to_priv_channels set
+ // to true. Sadly there is currently no way to change it at runtime.
+
+ nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+ nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
+
+ let nodes_1_serialized = nodes[1].node.encode();
+ let mut monitor_a_serialized = test_utils::TestVecWriter(Vec::new());
+ let mut monitor_b_serialized = test_utils::TestVecWriter(Vec::new());
+ get_monitor!(nodes[1], chan_id_1).write(&mut monitor_a_serialized).unwrap();
+ get_monitor!(nodes[1], chan_id_2).write(&mut monitor_b_serialized).unwrap();
+
+ persister = test_utils::TestPersister::new();
+ let keys_manager = &chanmon_cfgs[1].keys_manager;
+ new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[1].chain_source), nodes[1].tx_broadcaster.clone(), nodes[1].logger, node_cfgs[1].fee_estimator, &persister, keys_manager);
+ nodes[1].chain_monitor = &new_chain_monitor;
+
+ let mut monitor_a_read = &monitor_a_serialized.0[..];
+ let mut monitor_b_read = &monitor_b_serialized.0[..];
+ let (_, mut monitor_a) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut monitor_a_read, keys_manager).unwrap();
+ let (_, mut monitor_b) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut monitor_b_read, keys_manager).unwrap();
+ assert!(monitor_a_read.is_empty());
+ assert!(monitor_b_read.is_empty());
+
+ no_announce_cfg.accept_forwards_to_priv_channels = true;
+
+ let mut nodes_1_read = &nodes_1_serialized[..];
+ let (_, nodes_1_deserialized_tmp) = {
+ let mut channel_monitors = HashMap::new();
+ channel_monitors.insert(monitor_a.get_funding_txo().0, &mut monitor_a);
+ channel_monitors.insert(monitor_b.get_funding_txo().0, &mut monitor_b);
+ <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_1_read, ChannelManagerReadArgs {
+ default_config: no_announce_cfg,
+ keys_manager,
+ fee_estimator: node_cfgs[1].fee_estimator,
+ chain_monitor: nodes[1].chain_monitor,
+ tx_broadcaster: nodes[1].tx_broadcaster.clone(),
+ logger: nodes[1].logger,
+ channel_monitors,
+ }).unwrap()
+ };
+ assert!(nodes_1_read.is_empty());
+ nodes_1_deserialized = nodes_1_deserialized_tmp;
+
+ assert!(nodes[1].chain_monitor.watch_channel(monitor_a.get_funding_txo().0, monitor_a).is_ok());
+ assert!(nodes[1].chain_monitor.watch_channel(monitor_b.get_funding_txo().0, monitor_b).is_ok());
+ check_added_monitors!(nodes[1], 2);
+ nodes[1].node = &nodes_1_deserialized;
+
+ nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
+ nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
+ let as_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
+ let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
+ nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish);
+ nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
+ get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
+ get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
+
+ nodes[1].node.peer_connected(&nodes[2].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
+ nodes[2].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
+ let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[2].node.get_our_node_id());
+ let cs_reestablish = get_event_msg!(nodes[2], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
+ nodes[2].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
+ nodes[1].node.handle_channel_reestablish(&nodes[2].node.get_our_node_id(), &cs_reestablish);
+ get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
+ get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
+
+ nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], 10_000, our_payment_hash, our_payment_secret);
+ claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], our_payment_preimage);
+}
+
+fn do_test_1_conf_open(connect_style: ConnectStyle) {
+ // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
+ // tests that we properly send one in that case.
+ let mut alice_config = UserConfig::default();
+ alice_config.own_channel_config.minimum_depth = 1;
+ alice_config.channel_options.announced_channel = true;
+ alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
+ let mut bob_config = UserConfig::default();
+ bob_config.own_channel_config.minimum_depth = 1;
+ bob_config.channel_options.announced_channel = true;
+ bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
+ 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, &[Some(alice_config), Some(bob_config)]);
+ let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+ *nodes[0].connect_style.borrow_mut() = connect_style;
+
+ let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
+ mine_transaction(&nodes[1], &tx);
+ nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id()));
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+
+ mine_transaction(&nodes[0], &tx);
+ let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(as_msg_events.len(), 2);
+ let as_funding_locked = if let MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = as_msg_events[0] {
+ assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+ msg.clone()
+ } else { panic!("Unexpected event"); };
+ if let MessageSendEvent::SendChannelUpdate { ref node_id, msg: _ } = as_msg_events[1] {
+ assert_eq!(*node_id, nodes[1].node.get_our_node_id());
+ } else { panic!("Unexpected event"); }
+
+ nodes[1].node.handle_funding_locked(&nodes[0].node.get_our_node_id(), &as_funding_locked);
+ let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(bs_msg_events.len(), 1);
+ if let MessageSendEvent::SendChannelUpdate { ref node_id, msg: _ } = bs_msg_events[0] {
+ assert_eq!(*node_id, nodes[0].node.get_our_node_id());
+ } else { panic!("Unexpected event"); }
+
+ send_payment(&nodes[0], &[&nodes[1]], 100_000);
+
+ // After 6 confirmations, as required by the spec, we'll send announcement_signatures and
+ // broadcast the channel_announcement (but not before exactly 6 confirmations).
+ connect_blocks(&nodes[0], 4);
+ assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+ connect_blocks(&nodes[0], 1);
+ nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendAnnouncementSignatures, nodes[1].node.get_our_node_id()));
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ connect_blocks(&nodes[1], 5);
+ let bs_announce_events = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(bs_announce_events.len(), 2);
+ let bs_announcement_sigs = if let MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } = bs_announce_events[0] {
+ assert_eq!(*node_id, nodes[0].node.get_our_node_id());
+ msg.clone()
+ } else { panic!("Unexpected event"); };
+ let (bs_announcement, bs_update) = if let MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } = bs_announce_events[1] {
+ (msg.clone(), update_msg.clone())
+ } else { panic!("Unexpected event"); };
+
+ nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
+ let as_announce_events = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(as_announce_events.len(), 1);
+ let (announcement, as_update) = if let MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } = as_announce_events[0] {
+ (msg.clone(), update_msg.clone())
+ } else { panic!("Unexpected event"); };
+ assert_eq!(announcement, bs_announcement);
+
+ for node in nodes {
+ assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
+ node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
+ node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
+ }
+}
+#[test]
+fn test_1_conf_open() {
+ do_test_1_conf_open(ConnectStyle::BestBlockFirst);
+ do_test_1_conf_open(ConnectStyle::TransactionsFirst);
+ do_test_1_conf_open(ConnectStyle::FullBlockViaListen);
+}
+
+#[test]
+fn test_routed_scid_alias() {
+ // Trivially test sending a payment which is routed through an SCID alias.
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+ let mut no_announce_cfg = test_default_channel_config();
+ no_announce_cfg.accept_forwards_to_priv_channels = true;
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(no_announce_cfg), None]);
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known()).2;
+ let mut as_funding_locked = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known()).0;
+
+ let last_hop = nodes[2].node.list_usable_channels();
+ let hop_hints = vec![RouteHint(vec![RouteHintHop {
+ src_node_id: nodes[1].node.get_our_node_id(),
+ short_channel_id: last_hop[0].inbound_scid_alias.unwrap(),
+ fees: RoutingFees {
+ base_msat: last_hop[0].counterparty.forwarding_info.as_ref().unwrap().fee_base_msat,
+ proportional_millionths: last_hop[0].counterparty.forwarding_info.as_ref().unwrap().fee_proportional_millionths,
+ },
+ cltv_expiry_delta: last_hop[0].counterparty.forwarding_info.as_ref().unwrap().cltv_expiry_delta,
+ htlc_maximum_msat: None,
+ htlc_minimum_msat: None,
+ }])];
+ let (route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], hop_hints, 100_000, 42);
+ assert_eq!(route.paths[0][1].short_channel_id, last_hop[0].inbound_scid_alias.unwrap());
+ nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+ check_added_monitors!(nodes[0], 1);
+
+ pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], 100_000, payment_hash, payment_secret);
+ claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
+
+ // Now test that if a peer sends us a second funding_locked after the channel is operational we
+ // will use the new alias.
+ as_funding_locked.short_channel_id_alias = Some(0xdeadbeef);
+ nodes[2].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &as_funding_locked);
+ // Note that we always respond to a funding_locked with a channel_update. Not a lot of reason
+ // to bother updating that code, so just drop the message here.
+ get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
+ let updated_channel_info = nodes[2].node.list_usable_channels();
+ assert_eq!(updated_channel_info.len(), 1);
+ assert_eq!(updated_channel_info[0].inbound_scid_alias.unwrap(), 0xdeadbeef);
+ // Note that because we never send a duplicate funding_locked we can't send a payment through
+ // the 0xdeadbeef SCID alias.
+}
let channel_state = nodes[0].node.channel_state.lock().unwrap();
assert_eq!(channel_state.by_id.len(), 1);
- assert_eq!(channel_state.short_to_id.len(), 1);
+ assert_eq!(channel_state.short_to_id.len(), 2);
mem::drop(channel_state);
if !reorg_after_reload {
},
funding_txo: Some(OutPoint { txid: bitcoin::Txid::from_slice(&[0; 32]).unwrap(), index: 0 }),
short_channel_id,
+ inbound_scid_alias: None,
channel_value_satoshis: 0,
user_channel_id: 0,
balance_msat: 0,
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// Disable nodes 1, 2, and 8 by requiring unknown feature bits
- let unknown_features = NodeFeatures::known().set_unknown_feature_required();
+ let mut unknown_features = NodeFeatures::known();
+ unknown_features.set_unknown_feature_required();
add_or_update_node(&net_graph_msg_handler, &secp_ctx, &privkeys[0], unknown_features.clone(), 1);
add_or_update_node(&net_graph_msg_handler, &secp_ctx, &privkeys[1], unknown_features.clone(), 1);
add_or_update_node(&net_graph_msg_handler, &secp_ctx, &privkeys[7], unknown_features.clone(), 1);
txid: bitcoin::Txid::from_slice(&[0; 32]).unwrap(), index: 0
}),
short_channel_id: Some(1),
+ inbound_scid_alias: None,
channel_value_satoshis: 10_000_000,
user_channel_id: 0,
balance_msat: 10_000_000,
}
/// LDK has multiple reasons to generate fake short channel ids:
-/// 1) zero-conf channels that don't have a confirmed channel id yet
+/// 1) outbound SCID aliases we use for private channels
/// 2) phantom node payments, to get an scid for the phantom node's phantom channel
pub(crate) mod fake_scid {
use bitcoin::hash_types::BlockHash;
/// receipt, and handle the HTLC accordingly. The namespace identifier is encrypted when encoded
/// into the fake scid.
#[derive(Copy, Clone)]
- pub(super) enum Namespace {
+ pub(crate) enum Namespace {
Phantom,
- // Coming soon: a variant for the zero-conf scid namespace
+ OutboundAlias,
}
impl Namespace {
/// between segwit activation and the current best known height, and the tx index and output
/// index are also selected from a "reasonable" range. We add this logic because it makes it
/// non-obvious at a glance that the scid is fake, e.g. if it appears in invoice route hints.
- pub(super) fn get_fake_scid<Signer: Sign, K: Deref>(&self, highest_seen_blockheight: u32, genesis_hash: &BlockHash, fake_scid_rand_bytes: &[u8; 32], keys_manager: &K) -> u64
+ pub(crate) fn get_fake_scid<Signer: Sign, K: Deref>(&self, highest_seen_blockheight: u32, genesis_hash: &BlockHash, fake_scid_rand_bytes: &[u8; 32], keys_manager: &K) -> u64
where K::Target: KeysInterface<Signer = Signer>,
{
// Ensure we haven't created a namespace that doesn't fit into the 3 bits we've allocated for
}
}
- pub fn get_phantom_scid<Signer: Sign, K: Deref>(fake_scid_rand_bytes: &[u8; 32], highest_seen_blockheight: u32, genesis_hash: &BlockHash, keys_manager: &K) -> u64
- where K::Target: KeysInterface<Signer = Signer>,
- {
- let namespace = Namespace::Phantom;
- namespace.get_fake_scid(highest_seen_blockheight, genesis_hash, fake_scid_rand_bytes, keys_manager)
- }
-
fn segwit_activation_height(genesis: &BlockHash) -> u32 {
const MAINNET_GENESIS_STR: &'static str = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f";
if BlockHash::from_hex(MAINNET_GENESIS_STR).unwrap() == *genesis {
projects / rust-lightning / commitdiff