From 23ef2535d0af945061e5bdd279f1cac2d93b3269 Mon Sep 17 00:00:00 2001 From: Valentine Wallace Date: Tue, 9 Jan 2024 11:32:38 -0500 Subject: [PATCH] Store previously failed blinded paths on outbound payment failure. Useful so we don't retry over these paths. --- lightning/src/ln/outbound_payment.rs | 13 ++++++++++++- lightning/src/routing/router.rs | 13 +++++++++++++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/lightning/src/ln/outbound_payment.rs b/lightning/src/ln/outbound_payment.rs index e4158a89..47193bea 100644 --- a/lightning/src/ln/outbound_payment.rs +++ b/lightning/src/ln/outbound_payment.rs @@ -19,7 +19,7 @@ use crate::ln::{PaymentHash, PaymentPreimage, PaymentSecret}; use crate::ln::channelmanager::{ChannelDetails, EventCompletionAction, HTLCSource, PaymentId}; use crate::ln::onion_utils::{DecodedOnionFailure, HTLCFailReason}; use crate::offers::invoice::Bolt12Invoice; -use crate::routing::router::{InFlightHtlcs, Path, PaymentParameters, Route, RouteParameters, Router}; +use crate::routing::router::{BlindedTail, InFlightHtlcs, Path, PaymentParameters, Route, RouteParameters, Router}; use crate::util::errors::APIError; use crate::util::logger::Logger; use crate::util::time::Time; @@ -129,6 +129,11 @@ impl PendingOutboundPayment { params.previously_failed_channels.push(scid); } } + pub fn insert_previously_failed_blinded_path(&mut self, blinded_tail: &BlindedTail) { + if let PendingOutboundPayment::Retryable { payment_params: Some(params), .. } = self { + params.insert_previously_failed_blinded_path(blinded_tail); + } + } fn is_awaiting_invoice(&self) -> bool { match self { PendingOutboundPayment::AwaitingInvoice { .. } => true, @@ -1648,6 +1653,12 @@ impl OutboundPayments { // next-hop is needlessly blaming us! payment.get_mut().insert_previously_failed_scid(scid); } + if failed_within_blinded_path { + debug_assert!(short_channel_id.is_none()); + if let Some(bt) = &path.blinded_tail { + payment.get_mut().insert_previously_failed_blinded_path(&bt); + } else { debug_assert!(false); } + } if payment_is_probe || !is_retryable_now || payment_failed_permanently { let reason = if payment_failed_permanently { diff --git a/lightning/src/routing/router.rs b/lightning/src/routing/router.rs index 44933d67..284bf62f 100644 --- a/lightning/src/routing/router.rs +++ b/lightning/src/routing/router.rs @@ -914,6 +914,19 @@ impl PaymentParameters { pub fn with_max_channel_saturation_power_of_half(self, max_channel_saturation_power_of_half: u8) -> Self { Self { max_channel_saturation_power_of_half, ..self } } + + pub(crate) fn insert_previously_failed_blinded_path(&mut self, failed_blinded_tail: &BlindedTail) { + let mut found_blinded_tail = false; + for (idx, (_, path)) in self.payee.blinded_route_hints().iter().enumerate() { + if failed_blinded_tail.hops == path.blinded_hops && + failed_blinded_tail.blinding_point == path.blinding_point + { + self.previously_failed_blinded_path_idxs.push(idx as u64); + found_blinded_tail = true; + } + } + debug_assert!(found_blinded_tail); + } } /// The recipient of a payment, differing based on whether they've hidden their identity with route -- 2.30.2