Test sending and receiving to 1-hop blinded paths

lightning/src/ln/blinded_payment_tests.rs

@@ -0,0 +1,115 @@
+// 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.
+
+use bitcoin::secp256k1::Secp256k1;
+use crate::blinded_path::BlindedPath;
+use crate::blinded_path::payment::{PaymentConstraints, ReceiveTlvs};
+use crate::events::MessageSendEventsProvider;
+use crate::ln::channelmanager;
+use crate::ln::channelmanager::{PaymentId, RecipientOnionFields};
+use crate::ln::features::Bolt12InvoiceFeatures;
+use crate::ln::functional_test_utils::*;
+use crate::ln::outbound_payment::Retry;
+use crate::prelude::*;
+use crate::routing::router::{PaymentParameters, RouteParameters};
+use crate::util::config::UserConfig;
+
+#[test]
+fn one_hop_blinded_path() {
+	do_one_hop_blinded_path(true);
+	do_one_hop_blinded_path(false);
+}
+
+fn do_one_hop_blinded_path(success: bool) {
+	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_upd = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0).0.contents;
+
+	let amt_msat = 5000;
+	let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash(&nodes[1], Some(amt_msat), None);
+	let payee_tlvs = ReceiveTlvs {
+		payment_secret,
+		payment_constraints: PaymentConstraints {
+			max_cltv_expiry: u32::max_value(),
+			htlc_minimum_msat: chan_upd.htlc_minimum_msat,
+		},
+	};
+	let mut secp_ctx = Secp256k1::new();
+	let blinded_path = BlindedPath::new_for_payment(
+		&[], nodes[1].node.get_our_node_id(), payee_tlvs, chan_upd.htlc_maximum_msat,
+		&chanmon_cfgs[1].keys_manager, &secp_ctx
+	).unwrap();
+
+	let route_params = RouteParameters {
+		payment_params: PaymentParameters::blinded(vec![blinded_path]),
+		final_value_msat: amt_msat
+	};
+	nodes[0].node.send_payment(payment_hash, RecipientOnionFields::spontaneous_empty(),
+	PaymentId(payment_hash.0), route_params, Retry::Attempts(0)).unwrap();
+	check_added_monitors(&nodes[0], 1);
+	pass_along_route(&nodes[0], &[&[&nodes[1]]], amt_msat, payment_hash, payment_secret);
+	if success {
+		claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
+	} else {
+		fail_payment(&nodes[0], &[&nodes[1]], payment_hash);
+	}
+}
+
+#[test]
+fn mpp_to_one_hop_blinded_path() {
+	let chanmon_cfgs = create_chanmon_cfgs(4);
+	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 mut secp_ctx = Secp256k1::new();
+
+	create_announced_chan_between_nodes(&nodes, 0, 1);
+	create_announced_chan_between_nodes(&nodes, 0, 2);
+	let chan_upd_1_3 = create_announced_chan_between_nodes(&nodes, 1, 3).0.contents;
+	create_announced_chan_between_nodes(&nodes, 2, 3).0.contents;
+
+	let amt_msat = 15_000_000;
+	let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash(&nodes[3], Some(amt_msat), None);
+	let payee_tlvs = ReceiveTlvs {
+		payment_secret,
+		payment_constraints: PaymentConstraints {
+			max_cltv_expiry: u32::max_value(),
+			htlc_minimum_msat: chan_upd_1_3.htlc_minimum_msat,
+		},
+	};
+	let blinded_path = BlindedPath::new_for_payment(
+		&[], nodes[3].node.get_our_node_id(), payee_tlvs, u64::max_value(),
+		&chanmon_cfgs[3].keys_manager, &secp_ctx
+	).unwrap();
+
+	let bolt12_features: Bolt12InvoiceFeatures =
+		channelmanager::provided_invoice_features(&UserConfig::default()).to_context();
+	let route_params = RouteParameters {
+		payment_params: PaymentParameters::blinded(vec![blinded_path])
+			.with_bolt12_features(bolt12_features).unwrap(),
+		final_value_msat: amt_msat,
+	};
+	nodes[0].node.send_payment(payment_hash, RecipientOnionFields::spontaneous_empty(), PaymentId(payment_hash.0), route_params, Retry::Attempts(0)).unwrap();
+	check_added_monitors(&nodes[0], 2);
+
+	let expected_route: &[&[&Node]] = &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]];
+	let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+	assert_eq!(events.len(), 2);
+
+	let ev = remove_first_msg_event_to_node(&nodes[1].node.get_our_node_id(), &mut events);
+	pass_along_path(&nodes[0], expected_route[0], amt_msat, payment_hash.clone(),
+		Some(payment_secret), ev.clone(), false, None);
+
+	let ev = remove_first_msg_event_to_node(&nodes[2].node.get_our_node_id(), &mut events);
+	pass_along_path(&nodes[0], expected_route[1], amt_msat, payment_hash.clone(),
+		Some(payment_secret), ev.clone(), true, None);
+	claim_payment_along_route(&nodes[0], expected_route, false, payment_preimage);
+}

lightning/src/ln/mod.rs

@@ -43,6 +43,9 @@ pub mod wire;
 // without the node parameter being mut. This is incorrect, and thus newer rustcs will complain
 // about an unnecessary mut. Thus, we silence the unused_mut warning in two test modules below.
 
+#[cfg(test)]
+#[allow(unused_mut)]
+mod blinded_payment_tests;
 #[cfg(test)]
 #[allow(unused_mut)]
 mod functional_tests;