From 5c87f40f6b3b8e20a9c704071e4494d5609df049 Mon Sep 17 00:00:00 2001 From: Valentine Wallace Date: Tue, 9 Jan 2024 11:58:13 -0500 Subject: [PATCH] Test that we won't retry over previously failed blinded paths. --- lightning/src/ln/blinded_payment_tests.rs | 107 +++++++++++++++++++++- 1 file changed, 106 insertions(+), 1 deletion(-) diff --git a/lightning/src/ln/blinded_payment_tests.rs b/lightning/src/ln/blinded_payment_tests.rs index 22fe1b1a..69b0e74a 100644 --- a/lightning/src/ln/blinded_payment_tests.rs +++ b/lightning/src/ln/blinded_payment_tests.rs @@ -10,7 +10,7 @@ use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey}; use crate::blinded_path::BlindedPath; use crate::blinded_path::payment::{ForwardNode, ForwardTlvs, PaymentConstraints, PaymentRelay, ReceiveTlvs}; -use crate::events::{HTLCDestination, MessageSendEvent, MessageSendEventsProvider}; +use crate::events::{Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider, PaymentFailureReason}; use crate::ln::PaymentSecret; use crate::ln::channelmanager; use crate::ln::channelmanager::{PaymentId, RecipientOnionFields}; @@ -708,3 +708,108 @@ fn do_multi_hop_receiver_fail(check: ReceiveCheckFail) { expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().expected_htlc_error_data(INVALID_ONION_BLINDING, &[0; 32])); } + +#[test] +fn blinded_path_retries() { + let chanmon_cfgs = create_chanmon_cfgs(4); + // Make one blinded path's fees slightly higher so they are tried in a deterministic order. + let mut higher_fee_chan_cfg = test_default_channel_config(); + higher_fee_chan_cfg.channel_config.forwarding_fee_base_msat += 1; + let node_cfgs = create_node_cfgs(4, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, Some(higher_fee_chan_cfg), None]); + let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs); + + // Create this network topology so nodes[0] has a blinded route hint to retry over. + // n1 + // / \ + // n0 n3 + // \ / + // n2 + create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0); + create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1_000_000, 0); + let chan_1_3 = create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 1_000_000, 0); + let chan_2_3 = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 1_000_000, 0); + + let amt_msat = 5000; + let (_, payment_hash, payment_secret) = get_payment_preimage_hash(&nodes[3], Some(amt_msat), None); + let route_params = { + let pay_params = PaymentParameters::blinded( + vec![ + blinded_payment_path(payment_secret, + vec![nodes[1].node.get_our_node_id(), nodes[3].node.get_our_node_id()], &[&chan_1_3.0.contents], + &chanmon_cfgs[3].keys_manager + ), + blinded_payment_path(payment_secret, + vec![nodes[2].node.get_our_node_id(), nodes[3].node.get_our_node_id()], &[&chan_2_3.0.contents], + &chanmon_cfgs[3].keys_manager + ), + ] + ) + .with_bolt12_features(channelmanager::provided_bolt12_invoice_features(&UserConfig::default())) + .unwrap(); + RouteParameters::from_payment_params_and_value(pay_params, amt_msat) + }; + + nodes[0].node.send_payment(payment_hash, RecipientOnionFields::spontaneous_empty(), PaymentId(payment_hash.0), route_params.clone(), Retry::Attempts(2)).unwrap(); + check_added_monitors(&nodes[0], 1); + pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]]], amt_msat, payment_hash, payment_secret); + + macro_rules! fail_payment_back { + ($intro_node: expr) => { + nodes[3].node.fail_htlc_backwards(&payment_hash); + expect_pending_htlcs_forwardable_conditions( + nodes[3].node.get_and_clear_pending_events(), &[HTLCDestination::FailedPayment { payment_hash }] + ); + nodes[3].node.process_pending_htlc_forwards(); + check_added_monitors!(nodes[3], 1); + + let updates = get_htlc_update_msgs!(nodes[3], $intro_node.node.get_our_node_id()); + assert_eq!(updates.update_fail_malformed_htlcs.len(), 1); + let update_malformed = &updates.update_fail_malformed_htlcs[0]; + assert_eq!(update_malformed.sha256_of_onion, [0; 32]); + assert_eq!(update_malformed.failure_code, INVALID_ONION_BLINDING); + $intro_node.node.handle_update_fail_malformed_htlc(&nodes[3].node.get_our_node_id(), update_malformed); + do_commitment_signed_dance(&$intro_node, &nodes[3], &updates.commitment_signed, true, false); + + let updates = get_htlc_update_msgs!($intro_node, nodes[0].node.get_our_node_id()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + nodes[0].node.handle_update_fail_htlc(&$intro_node.node.get_our_node_id(), &updates.update_fail_htlcs[0]); + do_commitment_signed_dance(&nodes[0], &$intro_node, &updates.commitment_signed, false, false); + + let mut events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 2); + match events[0] { + Event::PaymentPathFailed { payment_hash: ev_payment_hash, payment_failed_permanently, .. } => { + assert_eq!(payment_hash, ev_payment_hash); + assert_eq!(payment_failed_permanently, false); + }, + _ => panic!("Unexpected event"), + } + match events[1] { + Event::PendingHTLCsForwardable { .. } => {}, + _ => panic!("Unexpected event"), + } + nodes[0].node.process_pending_htlc_forwards(); + } + } + + fail_payment_back!(nodes[1]); + + // Pass the retry along. + check_added_monitors!(nodes[0], 1); + let mut msg_events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(msg_events.len(), 1); + pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], amt_msat, payment_hash, Some(payment_secret), msg_events.pop().unwrap(), true, None); + + fail_payment_back!(nodes[2]); + let evs = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(evs.len(), 1); + match evs[0] { + Event::PaymentFailed { payment_hash: ev_payment_hash, reason, .. } => { + assert_eq!(ev_payment_hash, payment_hash); + // We have 1 retry attempt remaining, but we're out of blinded paths to try. + assert_eq!(reason, Some(PaymentFailureReason::RouteNotFound)); + }, + _ => panic!() + } +} -- 2.30.2