// You may not use this file except in accordance with one or both of these
// licenses.
-//! The top-level routing/network map tracking logic lives here.
-//!
-//! You probably want to create a P2PGossipSync and use that as your RoutingMessageHandler and then
-//! interrogate it to get routes for your own payments.
+//! The router finds paths within a [`NetworkGraph`] for a payment.
use bitcoin::secp256k1::PublicKey;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha256::Hash as Sha256;
-use crate::ln::channelmanager::ChannelDetails;
+use crate::ln::PaymentHash;
+use crate::ln::channelmanager::{ChannelDetails, PaymentId};
use crate::ln::features::{ChannelFeatures, InvoiceFeatures, NodeFeatures};
use crate::ln::msgs::{DecodeError, ErrorAction, LightningError, MAX_VALUE_MSAT};
-use crate::routing::gossip::{DirectedChannelInfoWithUpdate, EffectiveCapacity, ReadOnlyNetworkGraph, NetworkGraph, NodeId, RoutingFees};
-use crate::routing::scoring::{ChannelUsage, Score};
+use crate::routing::gossip::{DirectedChannelInfo, EffectiveCapacity, ReadOnlyNetworkGraph, NetworkGraph, NodeId, RoutingFees};
+use crate::routing::scoring::{ChannelUsage, LockableScore, Score};
use crate::util::ser::{Writeable, Readable, Writer};
use crate::util::logger::{Level, Logger};
use crate::util::chacha20::ChaCha20;
use crate::io;
use crate::prelude::*;
+use crate::sync::Mutex;
use alloc::collections::BinaryHeap;
use core::cmp;
use core::ops::Deref;
+/// A [`Router`] implemented using [`find_route`].
+pub struct DefaultRouter<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
+ network_graph: G,
+ logger: L,
+ random_seed_bytes: Mutex<[u8; 32]>,
+ scorer: S
+}
+
+impl<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> DefaultRouter<G, L, S> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
+ /// Creates a new router.
+ pub fn new(network_graph: G, logger: L, random_seed_bytes: [u8; 32], scorer: S) -> Self {
+ let random_seed_bytes = Mutex::new(random_seed_bytes);
+ Self { network_graph, logger, random_seed_bytes, scorer }
+ }
+}
+
+impl<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> Router for DefaultRouter<G, L, S> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
+ fn find_route(
+ &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&ChannelDetails]>,
+ inflight_htlcs: &InFlightHtlcs
+ ) -> Result<Route, LightningError> {
+ let random_seed_bytes = {
+ let mut locked_random_seed_bytes = self.random_seed_bytes.lock().unwrap();
+ *locked_random_seed_bytes = Sha256::hash(&*locked_random_seed_bytes).into_inner();
+ *locked_random_seed_bytes
+ };
+
+ find_route(
+ payer, params, &self.network_graph, first_hops, &*self.logger,
+ &ScorerAccountingForInFlightHtlcs::new(self.scorer.lock(), inflight_htlcs),
+ &random_seed_bytes
+ )
+ }
+}
+
/// A trait defining behavior for routing a payment.
pub trait Router {
/// Finds a [`Route`] between `payer` and `payee` for a payment with the given values.
fn find_route(
&self, payer: &PublicKey, route_params: &RouteParameters,
- first_hops: Option<&[&ChannelDetails]>, inflight_htlcs: InFlightHtlcs
+ first_hops: Option<&[&ChannelDetails]>, inflight_htlcs: &InFlightHtlcs
) -> Result<Route, LightningError>;
+ /// Finds a [`Route`] between `payer` and `payee` for a payment with the given values. Includes
+ /// `PaymentHash` and `PaymentId` to be able to correlate the request with a specific payment.
+ fn find_route_with_id(
+ &self, payer: &PublicKey, route_params: &RouteParameters,
+ first_hops: Option<&[&ChannelDetails]>, inflight_htlcs: &InFlightHtlcs,
+ _payment_hash: PaymentHash, _payment_id: PaymentId
+ ) -> Result<Route, LightningError> {
+ self.find_route(payer, route_params, first_hops, inflight_htlcs)
+ }
+}
+
+/// [`Score`] implementation that factors in in-flight HTLC liquidity.
+///
+/// Useful for custom [`Router`] implementations to wrap their [`Score`] on-the-fly when calling
+/// [`find_route`].
+///
+/// [`Score`]: crate::routing::scoring::Score
+pub struct ScorerAccountingForInFlightHtlcs<'a, S: Score> {
+ scorer: S,
+ // Maps a channel's short channel id and its direction to the liquidity used up.
+ inflight_htlcs: &'a InFlightHtlcs,
+}
+
+impl<'a, S: Score> ScorerAccountingForInFlightHtlcs<'a, S> {
+ /// Initialize a new `ScorerAccountingForInFlightHtlcs`.
+ pub fn new(scorer: S, inflight_htlcs: &'a InFlightHtlcs) -> Self {
+ ScorerAccountingForInFlightHtlcs {
+ scorer,
+ inflight_htlcs
+ }
+ }
+}
+
+#[cfg(c_bindings)]
+impl<'a, S: Score> Writeable for ScorerAccountingForInFlightHtlcs<'a, S> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> { self.scorer.write(writer) }
+}
+
+impl<'a, S: Score> Score for ScorerAccountingForInFlightHtlcs<'a, S> {
+ fn channel_penalty_msat(&self, short_channel_id: u64, source: &NodeId, target: &NodeId, usage: ChannelUsage) -> u64 {
+ if let Some(used_liquidity) = self.inflight_htlcs.used_liquidity_msat(
+ source, target, short_channel_id
+ ) {
+ let usage = ChannelUsage {
+ inflight_htlc_msat: usage.inflight_htlc_msat + used_liquidity,
+ ..usage
+ };
+
+ self.scorer.channel_penalty_msat(short_channel_id, source, target, usage)
+ } else {
+ self.scorer.channel_penalty_msat(short_channel_id, source, target, usage)
+ }
+ }
+
+ fn payment_path_failed(&mut self, path: &[&RouteHop], short_channel_id: u64) {
+ self.scorer.payment_path_failed(path, short_channel_id)
+ }
+
+ fn payment_path_successful(&mut self, path: &[&RouteHop]) {
+ self.scorer.payment_path_successful(path)
+ }
+
+ fn probe_failed(&mut self, path: &[&RouteHop], short_channel_id: u64) {
+ self.scorer.probe_failed(path, short_channel_id)
+ }
+
+ fn probe_successful(&mut self, path: &[&RouteHop]) {
+ self.scorer.probe_successful(path)
+ }
}
-/// A map with liquidity value (in msat) keyed by a short channel id and the direction the HTLC
-/// is traveling in. The direction boolean is determined by checking if the HTLC source's public
-/// key is less than its destination. See [`InFlightHtlcs::used_liquidity_msat`] for more
-/// details.
-#[cfg(not(any(test, feature = "_test_utils")))]
-pub struct InFlightHtlcs(HashMap<(u64, bool), u64>);
-#[cfg(any(test, feature = "_test_utils"))]
-pub struct InFlightHtlcs(pub HashMap<(u64, bool), u64>);
+/// A data structure for tracking in-flight HTLCs. May be used during pathfinding to account for
+/// in-use channel liquidity.
+#[derive(Clone)]
+pub struct InFlightHtlcs(
+ // A map with liquidity value (in msat) keyed by a short channel id and the direction the HTLC
+ // is traveling in. The direction boolean is determined by checking if the HTLC source's public
+ // key is less than its destination. See `InFlightHtlcs::used_liquidity_msat` for more
+ // details.
+ HashMap<(u64, bool), u64>
+);
impl InFlightHtlcs {
- /// Create a new `InFlightHtlcs` via a mapping from:
- /// (short_channel_id, source_pubkey < target_pubkey) -> used_liquidity_msat
- pub fn new(inflight_map: HashMap<(u64, bool), u64>) -> Self {
- InFlightHtlcs(inflight_map)
+ /// Constructs an empty `InFlightHtlcs`.
+ pub fn new() -> Self { InFlightHtlcs(HashMap::new()) }
+
+ /// Takes in a path with payer's node id and adds the path's details to `InFlightHtlcs`.
+ pub fn process_path(&mut self, path: &[RouteHop], payer_node_id: PublicKey) {
+ if path.is_empty() { return };
+ // total_inflight_map needs to be direction-sensitive when keeping track of the HTLC value
+ // that is held up. However, the `hops` array, which is a path returned by `find_route` in
+ // the router excludes the payer node. In the following lines, the payer's information is
+ // hardcoded with an inflight value of 0 so that we can correctly represent the first hop
+ // in our sliding window of two.
+ let reversed_hops_with_payer = path.iter().rev().skip(1)
+ .map(|hop| hop.pubkey)
+ .chain(core::iter::once(payer_node_id));
+ let mut cumulative_msat = 0;
+
+ // Taking the reversed vector from above, we zip it with just the reversed hops list to
+ // work "backwards" of the given path, since the last hop's `fee_msat` actually represents
+ // the total amount sent.
+ for (next_hop, prev_hop) in path.iter().rev().zip(reversed_hops_with_payer) {
+ cumulative_msat += next_hop.fee_msat;
+ self.0
+ .entry((next_hop.short_channel_id, NodeId::from_pubkey(&prev_hop) < NodeId::from_pubkey(&next_hop.pubkey)))
+ .and_modify(|used_liquidity_msat| *used_liquidity_msat += cumulative_msat)
+ .or_insert(cumulative_msat);
+ }
}
/// Returns liquidity in msat given the public key of the HTLC source, target, and short channel
/// Parameters needed to find a [`Route`].
///
/// Passed to [`find_route`] and [`build_route_from_hops`], but also provided in
-/// [`Event::PaymentPathFailed`] for retrying a failed payment path.
+/// [`Event::PaymentPathFailed`].
///
/// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct RouteParameters {
/// The parameters of the failed payment path.
pub payment_params: PaymentParameters,
pub final_value_msat: u64,
/// The CLTV on the final hop of the failed payment path.
+ ///
+ /// This field is deprecated, [`PaymentParameters::final_cltv_expiry_delta`] should be used
+ /// instead, if available.
pub final_cltv_expiry_delta: u32,
}
const MEDIAN_HOP_CLTV_EXPIRY_DELTA: u32 = 40;
// During routing, we only consider paths shorter than our maximum length estimate.
-// In the legacy onion format, the maximum number of hops used to be a fixed value of 20.
-// However, in the TLV onion format, there is no fixed maximum length, but the `hop_payloads`
+// In the TLV onion format, there is no fixed maximum length, but the `hop_payloads`
// field is always 1300 bytes. As the `tlv_payload` for each hop may vary in length, we have to
// estimate how many hops the route may have so that it actually fits the `hop_payloads` field.
//
/// payment to fail. Future attempts for the same payment shouldn't be relayed through any of
/// these SCIDs.
pub previously_failed_channels: Vec<u64>,
+
+ /// The minimum CLTV delta at the end of the route.
+ ///
+ /// This field should always be set to `Some` and may be required in a future release.
+ pub final_cltv_expiry_delta: Option<u32>,
}
impl_writeable_tlv_based!(PaymentParameters, {
(5, max_channel_saturation_power_of_half, (default_value, 2)),
(6, expiry_time, option),
(7, previously_failed_channels, vec_type),
+ (9, final_cltv_expiry_delta, option),
});
impl PaymentParameters {
/// Creates a payee with the node id of the given `pubkey`.
- pub fn from_node_id(payee_pubkey: PublicKey) -> Self {
+ ///
+ /// The `final_cltv_expiry_delta` should match the expected final CLTV delta the recipient has
+ /// provided.
+ pub fn from_node_id(payee_pubkey: PublicKey, final_cltv_expiry_delta: u32) -> Self {
Self {
payee_pubkey,
features: None,
max_path_count: DEFAULT_MAX_PATH_COUNT,
max_channel_saturation_power_of_half: 2,
previously_failed_channels: Vec::new(),
+ final_cltv_expiry_delta: Some(final_cltv_expiry_delta),
}
}
/// Creates a payee with the node id of the given `pubkey` to use for keysend payments.
- pub fn for_keysend(payee_pubkey: PublicKey) -> Self {
- Self::from_node_id(payee_pubkey).with_features(InvoiceFeatures::for_keysend())
+ ///
+ /// The `final_cltv_expiry_delta` should match the expected final CLTV delta the recipient has
+ /// provided.
+ pub fn for_keysend(payee_pubkey: PublicKey, final_cltv_expiry_delta: u32) -> Self {
+ Self::from_node_id(payee_pubkey, final_cltv_expiry_delta).with_features(InvoiceFeatures::for_keysend())
}
/// Includes the payee's features.
#[derive(Eq, PartialEq)]
struct RouteGraphNode {
node_id: NodeId,
- lowest_fee_to_peer_through_node: u64,
lowest_fee_to_node: u64,
total_cltv_delta: u32,
// The maximum value a yet-to-be-constructed payment path might flow through this node.
impl cmp::Ord for RouteGraphNode {
fn cmp(&self, other: &RouteGraphNode) -> cmp::Ordering {
- let other_score = cmp::max(other.lowest_fee_to_peer_through_node, other.path_htlc_minimum_msat)
+ let other_score = cmp::max(other.lowest_fee_to_node, other.path_htlc_minimum_msat)
.saturating_add(other.path_penalty_msat);
- let self_score = cmp::max(self.lowest_fee_to_peer_through_node, self.path_htlc_minimum_msat)
+ let self_score = cmp::max(self.lowest_fee_to_node, self.path_htlc_minimum_msat)
.saturating_add(self.path_penalty_msat);
other_score.cmp(&self_score).then_with(|| other.node_id.cmp(&self.node_id))
}
},
/// A hop found in the [`ReadOnlyNetworkGraph`], where the channel capacity may be unknown.
PublicHop {
- info: DirectedChannelInfoWithUpdate<'a>,
+ info: DirectedChannelInfo<'a>,
short_channel_id: u64,
},
/// A hop to the payee found in the payment invoice, though not necessarily a direct channel.
EffectiveCapacity::Unknown => EffectiveCapacity::Unknown.as_msat(),
EffectiveCapacity::MaximumHTLC { amount_msat } =>
amount_msat.checked_shr(saturation_shift).unwrap_or(0),
- EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat: None } =>
- capacity_msat.checked_shr(saturation_shift).unwrap_or(0),
- EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat: Some(htlc_max) } =>
- cmp::min(capacity_msat.checked_shr(saturation_shift).unwrap_or(0), htlc_max),
+ EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat } =>
+ cmp::min(capacity_msat.checked_shr(saturation_shift).unwrap_or(0), htlc_maximum_msat),
}
}
candidate: CandidateRouteHop<'a>,
fee_msat: u64,
- /// Minimal fees required to route to the source node of the current hop via any of its inbound channels.
- src_lowest_inbound_fees: RoutingFees,
/// All the fees paid *after* this channel on the way to the destination
next_hops_fee_msat: u64,
/// Fee paid for the use of the current channel (see candidate.fees()).
}
}
+#[inline(always)]
+/// Calculate the fees required to route the given amount over a channel with the given fees.
fn compute_fees(amount_msat: u64, channel_fees: RoutingFees) -> Option<u64> {
- let proportional_fee_millions =
- amount_msat.checked_mul(channel_fees.proportional_millionths as u64);
- if let Some(new_fee) = proportional_fee_millions.and_then(|part| {
- (channel_fees.base_msat as u64).checked_add(part / 1_000_000) }) {
+ amount_msat.checked_mul(channel_fees.proportional_millionths as u64)
+ .and_then(|part| (channel_fees.base_msat as u64).checked_add(part / 1_000_000))
+}
- Some(new_fee)
- } else {
- // This function may be (indirectly) called without any verification,
- // with channel_fees provided by a caller. We should handle it gracefully.
- None
- }
+#[inline(always)]
+/// Calculate the fees required to route the given amount over a channel with the given fees,
+/// saturating to [`u64::max_value`].
+fn compute_fees_saturating(amount_msat: u64, channel_fees: RoutingFees) -> u64 {
+ amount_msat.checked_mul(channel_fees.proportional_millionths as u64)
+ .map(|prop| prop / 1_000_000).unwrap_or(u64::max_value())
+ .saturating_add(channel_fees.base_msat as u64)
}
/// The default `features` we assume for a node in a route, when no `features` are known about that
) -> Result<Route, LightningError>
where L::Target: Logger, GL::Target: Logger {
let graph_lock = network_graph.read_only();
+ let final_cltv_expiry_delta =
+ if let Some(delta) = route_params.payment_params.final_cltv_expiry_delta { delta }
+ else { route_params.final_cltv_expiry_delta };
let mut route = get_route(our_node_pubkey, &route_params.payment_params, &graph_lock, first_hops,
- route_params.final_value_msat, route_params.final_cltv_expiry_delta, logger, scorer,
+ route_params.final_value_msat, final_cltv_expiry_delta, logger, scorer,
random_seed_bytes)?;
add_random_cltv_offset(&mut route, &route_params.payment_params, &graph_lock, random_seed_bytes);
Ok(route)
if payment_params.max_total_cltv_expiry_delta <= final_cltv_expiry_delta {
return Err(LightningError{err: "Can't find a route where the maximum total CLTV expiry delta is below the final CLTV expiry.".to_owned(), action: ErrorAction::IgnoreError});
}
+ if let Some(delta) = payment_params.final_cltv_expiry_delta {
+ debug_assert_eq!(delta, final_cltv_expiry_delta);
+ }
// The general routing idea is the following:
// 1. Fill first/last hops communicated by the caller.
// 8. If our maximum channel saturation limit caused us to pick two identical paths, combine
// them so that we're not sending two HTLCs along the same path.
- // As for the actual search algorithm,
- // we do a payee-to-payer pseudo-Dijkstra's sorting by each node's distance from the payee
- // plus the minimum per-HTLC fee to get from it to another node (aka "shitty pseudo-A*").
+ // As for the actual search algorithm, we do a payee-to-payer Dijkstra's sorting by each node's
+ // distance from the payee
//
// We are not a faithful Dijkstra's implementation because we can change values which impact
// earlier nodes while processing later nodes. Specifically, if we reach a channel with a lower
// runtime for little gain. Specifically, the current algorithm rather efficiently explores the
// graph for candidate paths, calculating the maximum value which can realistically be sent at
// the same time, remaining generic across different payment values.
- //
- // TODO: There are a few tweaks we could do, including possibly pre-calculating more stuff
- // to use as the A* heuristic beyond just the cost to get one node further than the current
- // one.
let network_channels = network_graph.channels();
let network_nodes = network_graph.nodes();
}
}
- // The main heap containing all candidate next-hops sorted by their score (max(A* fee,
+ // The main heap containing all candidate next-hops sorted by their score (max(fee,
// htlc_minimum)). Ideally this would be a heap which allowed cheap score reduction instead of
// adding duplicate entries when we find a better path to a given node.
let mut targets: BinaryHeap<RouteGraphNode> = BinaryHeap::new();
// might violate htlc_minimum_msat on the hops which are next along the
// payment path (upstream to the payee). To avoid that, we recompute
// path fees knowing the final path contribution after constructing it.
- let path_htlc_minimum_msat = compute_fees($next_hops_path_htlc_minimum_msat, $candidate.fees())
- .and_then(|fee_msat| fee_msat.checked_add($next_hops_path_htlc_minimum_msat))
- .map(|fee_msat| cmp::max(fee_msat, $candidate.htlc_minimum_msat()))
- .unwrap_or_else(|| u64::max_value());
+ let path_htlc_minimum_msat = cmp::max(
+ compute_fees_saturating($next_hops_path_htlc_minimum_msat, $candidate.fees())
+ .saturating_add($next_hops_path_htlc_minimum_msat),
+ $candidate.htlc_minimum_msat());
let hm_entry = dist.entry($src_node_id);
let old_entry = hm_entry.or_insert_with(|| {
// If there was previously no known way to access the source node
// semi-dummy record just to compute the fees to reach the source node.
// This will affect our decision on selecting short_channel_id
// as a way to reach the $dest_node_id.
- let mut fee_base_msat = 0;
- let mut fee_proportional_millionths = 0;
- if let Some(Some(fees)) = network_nodes.get(&$src_node_id).map(|node| node.lowest_inbound_channel_fees) {
- fee_base_msat = fees.base_msat;
- fee_proportional_millionths = fees.proportional_millionths;
- }
PathBuildingHop {
node_id: $dest_node_id.clone(),
candidate: $candidate.clone(),
fee_msat: 0,
- src_lowest_inbound_fees: RoutingFees {
- base_msat: fee_base_msat,
- proportional_millionths: fee_proportional_millionths,
- },
next_hops_fee_msat: u64::max_value(),
hop_use_fee_msat: u64::max_value(),
total_fee_msat: u64::max_value(),
if should_process {
let mut hop_use_fee_msat = 0;
- let mut total_fee_msat = $next_hops_fee_msat;
+ let mut total_fee_msat: u64 = $next_hops_fee_msat;
// Ignore hop_use_fee_msat for channel-from-us as we assume all channels-from-us
// will have the same effective-fee
if $src_node_id != our_node_id {
- match compute_fees(amount_to_transfer_over_msat, $candidate.fees()) {
- // max_value means we'll always fail
- // the old_entry.total_fee_msat > total_fee_msat check
- None => total_fee_msat = u64::max_value(),
- Some(fee_msat) => {
- hop_use_fee_msat = fee_msat;
- total_fee_msat += hop_use_fee_msat;
- // When calculating the lowest inbound fees to a node, we
- // calculate fees here not based on the actual value we think
- // will flow over this channel, but on the minimum value that
- // we'll accept flowing over it. The minimum accepted value
- // is a constant through each path collection run, ensuring
- // consistent basis. Otherwise we may later find a
- // different path to the source node that is more expensive,
- // but which we consider to be cheaper because we are capacity
- // constrained and the relative fee becomes lower.
- match compute_fees(minimal_value_contribution_msat, old_entry.src_lowest_inbound_fees)
- .map(|a| a.checked_add(total_fee_msat)) {
- Some(Some(v)) => {
- total_fee_msat = v;
- },
- _ => {
- total_fee_msat = u64::max_value();
- }
- };
- }
- }
+ // Note that `u64::max_value` means we'll always fail the
+ // `old_entry.total_fee_msat > total_fee_msat` check below
+ hop_use_fee_msat = compute_fees_saturating(amount_to_transfer_over_msat, $candidate.fees());
+ total_fee_msat = total_fee_msat.saturating_add(hop_use_fee_msat);
}
let channel_usage = ChannelUsage {
.saturating_add(channel_penalty_msat);
let new_graph_node = RouteGraphNode {
node_id: $src_node_id,
- lowest_fee_to_peer_through_node: total_fee_msat,
- lowest_fee_to_node: $next_hops_fee_msat as u64 + hop_use_fee_msat,
+ lowest_fee_to_node: total_fee_msat,
total_cltv_delta: hop_total_cltv_delta,
value_contribution_msat,
path_htlc_minimum_msat,
for chan_id in $node.channels.iter() {
let chan = network_channels.get(chan_id).unwrap();
if !chan.features.requires_unknown_bits() {
- let (directed_channel, source) =
- chan.as_directed_to(&$node_id).expect("inconsistent NetworkGraph");
- if first_hops.is_none() || *source != our_node_id {
- if let Some(direction) = directed_channel.direction() {
- if direction.enabled {
+ if let Some((directed_channel, source)) = chan.as_directed_to(&$node_id) {
+ if first_hops.is_none() || *source != our_node_id {
+ if directed_channel.direction().enabled {
let candidate = CandidateRouteHop::PublicHop {
- info: directed_channel.with_update().unwrap(),
+ info: directed_channel,
short_channel_id: *chan_id,
};
add_entry!(candidate, *source, $node_id,
let candidate = network_channels
.get(&hop.short_channel_id)
.and_then(|channel| channel.as_directed_to(&target))
- .and_then(|(channel, _)| channel.with_update())
- .map(|info| CandidateRouteHop::PublicHop {
+ .map(|(info, _)| CandidateRouteHop::PublicHop {
info,
short_channel_id: hop.short_channel_id,
})
random_channel.as_directed_from(&cur_node_id).map(|(dir_info, next_id)| {
if !nodes_to_avoid.iter().any(|x| x == next_id) {
nodes_to_avoid[random_hop] = *next_id;
- dir_info.direction().map(|channel_update_info| {
- random_hop_offset = channel_update_info.cltv_expiry_delta.into();
- cur_hop = Some(*next_id);
- });
+ random_hop_offset = dir_info.direction().cltv_expiry_delta.into();
+ cur_hop = Some(*next_id);
}
});
}
#[cfg(test)]
mod tests {
use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId, EffectiveCapacity};
+ use crate::routing::utxo::UtxoResult;
use crate::routing::router::{get_route, build_route_from_hops_internal, add_random_cltv_offset, default_node_features,
PaymentParameters, Route, RouteHint, RouteHintHop, RouteHop, RoutingFees,
DEFAULT_MAX_TOTAL_CLTV_EXPIRY_DELTA, MAX_PATH_LENGTH_ESTIMATE};
- use crate::routing::scoring::{ChannelUsage, Score, ProbabilisticScorer, ProbabilisticScoringParameters};
+ use crate::routing::scoring::{ChannelUsage, FixedPenaltyScorer, Score, ProbabilisticScorer, ProbabilisticScoringParameters};
use crate::routing::test_utils::{add_channel, add_or_update_node, build_graph, build_line_graph, id_to_feature_flags, get_nodes, update_channel};
use crate::chain::transaction::OutPoint;
- use crate::chain::keysinterface::KeysInterface;
+ use crate::chain::keysinterface::EntropySource;
use crate::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
use crate::ln::msgs::{ErrorAction, LightningError, UnsignedChannelUpdate, MAX_VALUE_MSAT};
use crate::ln::channelmanager;
+ use crate::util::config::UserConfig;
use crate::util::test_utils as ln_test_utils;
use crate::util::chacha20::ChaCha20;
#[cfg(c_bindings)]
inbound_capacity_msat: 42,
unspendable_punishment_reserve: None,
confirmations_required: None,
+ confirmations: None,
force_close_spend_delay: None,
is_outbound: true, is_channel_ready: true,
is_usable: true, is_public: true,
fn simple_route_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn invalid_first_hop_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn htlc_minimum_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn htlc_minimum_overpay_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(channelmanager::provided_invoice_features());
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42).with_features(channelmanager::provided_invoice_features(&config));
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn disable_channels_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn disable_node_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (_, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
fn our_chans_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// Route to 1 via 2 and 3 because our channel to 1 is disabled
- let payment_params = PaymentParameters::from_node_id(nodes[0]);
+ let payment_params = PaymentParameters::from_node_id(nodes[0], 42);
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths[0].len(), 3);
assert_eq!(route.paths[0][2].channel_features.le_flags(), &id_to_feature_flags(3));
// If we specify a channel to node7, that overrides our local channel view and that gets used
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
let our_chans = vec![get_channel_details(Some(42), nodes[7].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)];
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::<Vec<_>>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths[0].len(), 2);
fn partial_route_hint_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let mut invalid_last_hops = last_hops_multi_private_channels(&nodes);
invalid_last_hops.push(invalid_last_hop);
{
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(invalid_last_hops);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(invalid_last_hops);
if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) {
assert_eq!(err, "Route hint cannot have the payee as the source.");
} else { panic!(); }
}
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops_multi_private_channels(&nodes));
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops_multi_private_channels(&nodes));
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths[0].len(), 5);
fn ignores_empty_last_hops_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(empty_last_hop(&nodes));
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(empty_last_hop(&nodes));
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (_, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
let last_hops = multi_hop_last_hops_hint([nodes[2], nodes[3]]);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops.clone());
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops.clone());
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// Test through channels 2, 3, 0xff00, 0xff01.
let non_announced_pubkey = PublicKey::from_secret_key(&secp_ctx, &non_announced_privkey);
let last_hops = multi_hop_last_hops_hint([nodes[2], non_announced_pubkey]);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops.clone());
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops.clone());
+ let scorer = ln_test_utils::TestScorer::new();
// Test through channels 2, 3, 0xff00, 0xff01.
// Test shows that multiple hop hints are considered.
fn last_hops_with_public_channel_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops_with_public_channel(&nodes));
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops_with_public_channel(&nodes));
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// This test shows that public routes can be present in the invoice
fn our_chans_last_hop_connect_test() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// Simple test with outbound channel to 4 to test that last_hops and first_hops connect
let our_chans = vec![get_channel_details(Some(42), nodes[3].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)];
let mut last_hops = last_hops(&nodes);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops.clone());
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops.clone());
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::<Vec<_>>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths[0].len(), 2);
last_hops[0].0[0].fees.base_msat = 1000;
// Revert to via 6 as the fee on 8 goes up
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops);
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths[0].len(), 4);
htlc_minimum_msat: None,
htlc_maximum_msat: last_hop_htlc_max,
}]);
- let payment_params = PaymentParameters::from_node_id(target_node_id).with_route_hints(vec![last_hops]);
+ let payment_params = PaymentParameters::from_node_id(target_node_id, 42).with_route_hints(vec![last_hops]);
let our_chans = vec![get_channel_details(Some(42), middle_node_id, InitFeatures::from_le_bytes(vec![0b11]), outbound_capacity_msat)];
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
let (secp_ctx, network_graph, mut gossip_sync, chain_monitor, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42).with_features(channelmanager::provided_invoice_features(&config));
// We will use a simple single-path route from
// our node to node2 via node0: channels {1, 3}.
.push_opcode(opcodes::all::OP_PUSHNUM_2)
.push_opcode(opcodes::all::OP_CHECKMULTISIG).into_script().to_v0_p2wsh();
- *chain_monitor.utxo_ret.lock().unwrap() = Ok(TxOut { value: 15, script_pubkey: good_script.clone() });
- gossip_sync.add_chain_access(Some(chain_monitor));
+ *chain_monitor.utxo_ret.lock().unwrap() =
+ UtxoResult::Sync(Ok(TxOut { value: 15, script_pubkey: good_script.clone() }));
+ gossip_sync.add_utxo_lookup(Some(chain_monitor));
add_channel(&gossip_sync, &secp_ctx, &privkeys[0], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(3)), 333);
update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
// one of the latter hops is limited.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 42).with_features(channelmanager::provided_invoice_features(&config));
// Path via {node7, node2, node4} is channels {12, 13, 6, 11}.
// {12, 13, 11} have the capacities of 100, {6} has a capacity of 50.
fn ignore_fee_first_hop_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
// Path via node0 is channels {1, 3}. Limit them to 100 and 50 sats (total limit 50).
update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
fn simple_mpp_route_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2])
- .with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42)
+ .with_features(channelmanager::provided_invoice_features(&config));
// We need a route consisting of 3 paths:
// From our node to node2 via node0, node7, node1 (three paths one hop each).
fn long_mpp_route_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 42).with_features(channelmanager::provided_invoice_features(&config));
// We need a route consisting of 3 paths:
// From our node to node3 via {node0, node2}, {node7, node2, node4} and {node7, node2}.
fn mpp_cheaper_route_test() {
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 42).with_features(channelmanager::provided_invoice_features(&config));
// This test checks that if we have two cheaper paths and one more expensive path,
// so that liquidity-wise any 2 of 3 combination is sufficient,
// if the fee is not properly accounted for, the behavior is different.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 42).with_features(channelmanager::provided_invoice_features(&config));
// We need a route consisting of 2 paths:
// From our node to node3 via {node0, node2} and {node7, node2, node4}.
// This bug appeared in production in some specific channel configurations.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(PublicKey::from_slice(&[02; 33]).unwrap()).with_features(channelmanager::provided_invoice_features())
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(PublicKey::from_slice(&[02; 33]).unwrap(), 42).with_features(channelmanager::provided_invoice_features(&config))
.with_route_hints(vec![RouteHint(vec![RouteHintHop {
src_node_id: nodes[2],
short_channel_id: 42,
// path finding we realize that we found more capacity than we need.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(channelmanager::provided_invoice_features())
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42).with_features(channelmanager::provided_invoice_features(&config))
.with_max_channel_saturation_power_of_half(0);
// We need a route consisting of 3 paths:
let network = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
let gossip_sync = P2PGossipSync::new(Arc::clone(&network), None, Arc::clone(&logger));
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[6]);
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42);
add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6);
update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
// we calculated fees on a higher value, resulting in us ignoring such paths.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, _, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2]);
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42);
// We modify the graph to set the htlc_maximum of channel 2 to below the value we wish to
// send.
// resulting in us thinking there is no possible path, even if other paths exist.
let (secp_ctx, network_graph, gossip_sync, _, logger) = build_graph();
let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42).with_features(channelmanager::provided_invoice_features(&config));
// We modify the graph to set the htlc_minimum of channel 2 and 4 as needed - channel 2
// gets an htlc_maximum_msat of 80_000 and channel 4 an htlc_minimum_msat of 90_000. We
assert_eq!(route.paths[0][1].short_channel_id, 13);
assert_eq!(route.paths[0][1].fee_msat, 90_000);
assert_eq!(route.paths[0][1].cltv_expiry_delta, 42);
- assert_eq!(route.paths[0][1].node_features.le_flags(), channelmanager::provided_invoice_features().le_flags());
+ assert_eq!(route.paths[0][1].node_features.le_flags(), channelmanager::provided_invoice_features(&config).le_flags());
assert_eq!(route.paths[0][1].channel_features.le_flags(), &id_to_feature_flags(13));
}
}
let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
let logger = Arc::new(ln_test_utils::TestLogger::new());
let network_graph = NetworkGraph::new(genesis_hash, Arc::clone(&logger));
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
- let payment_params = PaymentParameters::from_node_id(nodes[0]).with_features(channelmanager::provided_invoice_features());
+ let scorer = ln_test_utils::TestScorer::new();
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[0], 42).with_features(channelmanager::provided_invoice_features(&config));
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
{
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&[
- &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(), 200_000),
- &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(), 10_000),
+ &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(&config), 200_000),
+ &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(&config), 10_000),
]), 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths.len(), 1);
assert_eq!(route.paths[0].len(), 1);
}
{
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&[
- &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(), 50_000),
+ &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(&config), 50_000),
]), 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths.len(), 2);
assert_eq!(route.paths[0].len(), 1);
// smallest of them, avoiding further fragmenting our available outbound balance to
// this node.
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&[
- &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(5), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(6), nodes[0], channelmanager::provided_init_features(), 300_000),
- &get_channel_details(Some(7), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(8), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(9), nodes[0], channelmanager::provided_init_features(), 50_000),
- &get_channel_details(Some(4), nodes[0], channelmanager::provided_init_features(), 1_000_000),
+ &get_channel_details(Some(2), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(3), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(5), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(6), nodes[0], channelmanager::provided_init_features(&config), 300_000),
+ &get_channel_details(Some(7), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(8), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(9), nodes[0], channelmanager::provided_init_features(&config), 50_000),
+ &get_channel_details(Some(4), nodes[0], channelmanager::provided_init_features(&config), 1_000_000),
]), 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
assert_eq!(route.paths.len(), 1);
assert_eq!(route.paths[0].len(), 1);
fn prefers_shorter_route_with_higher_fees() {
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes));
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops(&nodes));
// Without penalizing each hop 100 msats, a longer path with lower fees is chosen.
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let route = get_route(
// Applying a 100 msat penalty to each hop results in taking channels 7 and 10 to nodes[6]
// from nodes[2] rather than channel 6, 11, and 8, even though the longer path is cheaper.
- let scorer = ln_test_utils::TestScorer::with_penalty(100);
+ let scorer = FixedPenaltyScorer::with_penalty(100);
let route = get_route(
&our_id, &payment_params, &network_graph.read_only(), None, 100, 42,
Arc::clone(&logger), &scorer, &random_seed_bytes
fn avoids_routing_through_bad_channels_and_nodes() {
let (secp_ctx, network, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes));
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops(&nodes));
let network_graph = network.read_only();
// A path to nodes[6] exists when no penalties are applied to any channel.
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let route = get_route(
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
let network_graph = network.read_only();
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
// Make sure that generally there is at least one route available
let feasible_max_total_cltv_delta = 1008;
- let feasible_payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes))
+ let feasible_payment_params = PaymentParameters::from_node_id(nodes[6], 0).with_route_hints(last_hops(&nodes))
.with_max_total_cltv_expiry_delta(feasible_max_total_cltv_delta);
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// But not if we exclude all paths on the basis of their accumulated CLTV delta
let fail_max_total_cltv_delta = 23;
- let fail_payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes))
+ let fail_payment_params = PaymentParameters::from_node_id(nodes[6], 0).with_route_hints(last_hops(&nodes))
.with_max_total_cltv_expiry_delta(fail_max_total_cltv_delta);
match get_route(&our_id, &fail_payment_params, &network_graph, None, 100, 0, Arc::clone(&logger), &scorer, &random_seed_bytes)
{
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
let network_graph = network.read_only();
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
- let mut payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes))
+ let scorer = ln_test_utils::TestScorer::new();
+ let mut payment_params = PaymentParameters::from_node_id(nodes[6], 0).with_route_hints(last_hops(&nodes))
.with_max_path_count(1);
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
let network_graph = network.read_only();
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// First check we can actually create a long route on this graph.
- let feasible_payment_params = PaymentParameters::from_node_id(nodes[18]);
+ let feasible_payment_params = PaymentParameters::from_node_id(nodes[18], 0);
let route = get_route(&our_id, &feasible_payment_params, &network_graph, None, 100, 0,
Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::<Vec<_>>();
assert!(path.len() == MAX_PATH_LENGTH_ESTIMATE.into());
// But we can't create a path surpassing the MAX_PATH_LENGTH_ESTIMATE limit.
- let fail_payment_params = PaymentParameters::from_node_id(nodes[19]);
+ let fail_payment_params = PaymentParameters::from_node_id(nodes[19], 0);
match get_route(&our_id, &fail_payment_params, &network_graph, None, 100, 0,
Arc::clone(&logger), &scorer, &random_seed_bytes)
{
let (secp_ctx, network_graph, _, _, logger) = build_graph();
let (_, our_id, _, nodes) = get_nodes(&secp_ctx);
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
+ let scorer = ln_test_utils::TestScorer::new();
- let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes));
+ let payment_params = PaymentParameters::from_node_id(nodes[6], 42).with_route_hints(last_hops(&nodes));
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap();
let network_graph = network.read_only();
let network_nodes = network_graph.nodes();
let network_channels = network_graph.channels();
- let scorer = ln_test_utils::TestScorer::with_penalty(0);
- let payment_params = PaymentParameters::from_node_id(nodes[3]);
+ let scorer = ln_test_utils::TestScorer::new();
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 0);
let keys_manager = ln_test_utils::TestKeysInterface::new(&[4u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
for channel_id in &cur_node.channels {
if let Some(channel_info) = network_channels.get(&channel_id) {
if let Some((dir_info, next_id)) = channel_info.as_directed_from(&cur_node_id) {
- if let Some(channel_update_info) = dir_info.direction() {
- let next_cltv_expiry_delta = channel_update_info.cltv_expiry_delta as u32;
- if cur_path_cltv_deltas.iter().sum::<u32>()
- .saturating_add(next_cltv_expiry_delta) <= observed_cltv_expiry_delta {
- let mut new_path_cltv_deltas = cur_path_cltv_deltas.clone();
- new_path_cltv_deltas.push(next_cltv_expiry_delta);
- candidates.push_back((*next_id, new_path_cltv_deltas));
- }
+ let next_cltv_expiry_delta = dir_info.direction().cltv_expiry_delta as u32;
+ if cur_path_cltv_deltas.iter().sum::<u32>()
+ .saturating_add(next_cltv_expiry_delta) <= observed_cltv_expiry_delta {
+ let mut new_path_cltv_deltas = cur_path_cltv_deltas.clone();
+ new_path_cltv_deltas.push(next_cltv_expiry_delta);
+ candidates.push_back((*next_id, new_path_cltv_deltas));
}
}
}
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
- let payment_params = PaymentParameters::from_node_id(nodes[3]);
+ let payment_params = PaymentParameters::from_node_id(nodes[3], 0);
let hops = [nodes[1], nodes[2], nodes[4], nodes[3]];
let route = build_route_from_hops_internal(&our_id, &hops, &payment_params,
&network_graph, 100, 0, Arc::clone(&logger), &random_seed_bytes).unwrap();
excess_data: Vec::new()
});
- let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(channelmanager::provided_invoice_features());
+ let config = UserConfig::default();
+ let payment_params = PaymentParameters::from_node_id(nodes[2], 42).with_features(channelmanager::provided_invoice_features(&config));
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
// 100,000 sats is less than the available liquidity on each channel, set above.
'load_endpoints: for _ in 0..10 {
loop {
seed = seed.overflowing_mul(0xdeadbeef).0;
- let src = &PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let src = &PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
seed = seed.overflowing_mul(0xdeadbeef).0;
- let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
- let payment_params = PaymentParameters::from_node_id(dst);
+ let dst = PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let payment_params = PaymentParameters::from_node_id(dst, 42);
let amt = seed as u64 % 200_000_000;
let params = ProbabilisticScoringParameters::default();
let scorer = ProbabilisticScorer::new(params, &graph, &logger);
let graph = NetworkGraph::read(&mut d, &logger).unwrap();
let keys_manager = ln_test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
+ let config = UserConfig::default();
// First, get 100 (source, destination) pairs for which route-getting actually succeeds...
let mut seed = random_init_seed() as usize;
'load_endpoints: for _ in 0..10 {
loop {
seed = seed.overflowing_mul(0xdeadbeef).0;
- let src = &PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let src = &PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
seed = seed.overflowing_mul(0xdeadbeef).0;
- let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
- let payment_params = PaymentParameters::from_node_id(dst).with_features(channelmanager::provided_invoice_features());
+ let dst = PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let payment_params = PaymentParameters::from_node_id(dst, 42).with_features(channelmanager::provided_invoice_features(&config));
let amt = seed as u64 % 200_000_000;
let params = ProbabilisticScoringParameters::default();
let scorer = ProbabilisticScorer::new(params, &graph, &logger);
let usage = ChannelUsage {
amount_msat: 0,
inflight_htlc_msat: 0,
- effective_capacity: EffectiveCapacity::Total { capacity_msat: 1_024_000, htlc_maximum_msat: Some(1_000) },
+ effective_capacity: EffectiveCapacity::Total { capacity_msat: 1_024_000, htlc_maximum_msat: 1_000 },
};
scorer.set_manual_penalty(&NodeId::from_pubkey(&nodes[3]), 123);
scorer.set_manual_penalty(&NodeId::from_pubkey(&nodes[4]), 456);
assert_eq!(scorer.channel_penalty_msat(42, &NodeId::from_pubkey(&nodes[3]), &NodeId::from_pubkey(&nodes[4]), usage), 456);
// Then check we can get a normal route
- let payment_params = PaymentParameters::from_node_id(nodes[10]);
+ let payment_params = PaymentParameters::from_node_id(nodes[10], 42);
let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes);
assert!(route.is_ok());
use std::fs::File;
/// Tries to open a network graph file, or panics with a URL to fetch it.
pub(crate) fn get_route_file() -> Result<std::fs::File, &'static str> {
- let res = File::open("net_graph-2021-05-31.bin") // By default we're run in RL/lightning
- .or_else(|_| File::open("lightning/net_graph-2021-05-31.bin")) // We may be run manually in RL/
+ let res = File::open("net_graph-2023-01-18.bin") // By default we're run in RL/lightning
+ .or_else(|_| File::open("lightning/net_graph-2023-01-18.bin")) // We may be run manually in RL/
.or_else(|_| { // Fall back to guessing based on the binary location
// path is likely something like .../rust-lightning/target/debug/deps/lightning-...
let mut path = std::env::current_exe().unwrap();
path.pop(); // debug
path.pop(); // target
path.push("lightning");
- path.push("net_graph-2021-05-31.bin");
+ path.push("net_graph-2023-01-18.bin");
eprintln!("{}", path.to_str().unwrap());
File::open(path)
})
- .map_err(|_| "Please fetch https://bitcoin.ninja/ldk-net_graph-v0.0.15-2021-05-31.bin and place it at lightning/net_graph-2021-05-31.bin");
+ .map_err(|_| "Please fetch https://bitcoin.ninja/ldk-net_graph-v0.0.113-2023-01-18.bin and place it at lightning/net_graph-2023-01-18.bin");
#[cfg(require_route_graph_test)]
return Ok(res.unwrap());
#[cfg(not(require_route_graph_test))]
use bitcoin::hashes::Hash;
use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
use crate::chain::transaction::OutPoint;
- use crate::chain::keysinterface::{KeysManager,KeysInterface};
+ use crate::chain::keysinterface::{EntropySource, KeysManager};
use crate::ln::channelmanager::{self, ChannelCounterparty, ChannelDetails};
use crate::ln::features::InvoiceFeatures;
use crate::routing::gossip::NetworkGraph;
use crate::routing::scoring::{FixedPenaltyScorer, ProbabilisticScorer, ProbabilisticScoringParameters};
+ use crate::util::config::UserConfig;
use crate::util::logger::{Logger, Record};
use crate::util::ser::ReadableArgs;
ChannelDetails {
channel_id: [0; 32],
counterparty: ChannelCounterparty {
- features: channelmanager::provided_init_features(),
+ features: channelmanager::provided_init_features(&UserConfig::default()),
node_id,
unspendable_punishment_reserve: 0,
forwarding_info: None,
inbound_capacity_msat: 0,
unspendable_punishment_reserve: None,
confirmations_required: None,
+ confirmations: None,
force_close_spend_delay: None,
is_outbound: true,
is_channel_ready: true,
let logger = DummyLogger {};
let network_graph = read_network_graph(&logger);
let scorer = FixedPenaltyScorer::with_penalty(0);
- generate_routes(bench, &network_graph, scorer, channelmanager::provided_invoice_features());
+ generate_routes(bench, &network_graph, scorer, channelmanager::provided_invoice_features(&UserConfig::default()));
}
#[bench]
let network_graph = read_network_graph(&logger);
let params = ProbabilisticScoringParameters::default();
let scorer = ProbabilisticScorer::new(params, &network_graph, &logger);
- generate_routes(bench, &network_graph, scorer, channelmanager::provided_invoice_features());
+ generate_routes(bench, &network_graph, scorer, channelmanager::provided_invoice_features(&UserConfig::default()));
}
fn generate_routes<S: Score>(
'load_endpoints: for _ in 0..150 {
loop {
seed *= 0xdeadbeef;
- let src = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let src = PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
seed *= 0xdeadbeef;
- let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
- let params = PaymentParameters::from_node_id(dst).with_features(features.clone());
+ let dst = PublicKey::from_slice(nodes.unordered_keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap();
+ let params = PaymentParameters::from_node_id(dst, 42).with_features(features.clone());
let first_hop = first_hop(src);
let amt = seed as u64 % 1_000_000;
if let Ok(route) = get_route(&payer, ¶ms, &graph.read_only(), Some(&[&first_hop]), amt, 42, &DummyLogger{}, &scorer, &random_seed_bytes) {
projects / rust-lightning / blobdiff