_ Git - rust-lightning/blob - lightning/src/ln/offers_tests.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 //! Functional tests for the BOLT 12 Offers payment flow.
  11 //!
  12 //! [`ChannelManager`] provides utilities to create [`Offer`]s and [`Refund`]s along with utilities
  13 //! to initiate and request payment for them, respectively. It also manages the payment flow via
  14 //! implementing [`OffersMessageHandler`]. This module tests that functionality, including the
  15 //! resulting [`Event`] generation.
  16 //!
  17 //! Two-node success tests use an announced channel:
  18 //!
  19 //! Alice --- Bob
  20 //!
  21 //! While two-node failure tests use an unannounced channel:
  22 //!
  23 //! Alice ... Bob
  24 //!
  25 //! Six-node tests use unannounced channels for the sender and recipient and announced channels for
  26 //! the rest of the network.
  27 //!
  28 //!               nodes[4]
  29 //!              /        \
  30 //!             /          \
  31 //!            /            \
  32 //! Alice ... Bob -------- Charlie ... David
  33 //!            \            /
  34 //!             \          /
  35 //!              \        /
  36 //!               nodes[5]
  37 //!
  38 //! Unnamed nodes are needed to ensure unannounced nodes can create two-hop blinded paths.
  39 //!
  40 //! Nodes without channels are disconnected and connected as needed to ensure that deterministic
  41 //! blinded paths are used.
  42
  43 use bitcoin::network::Network;
  44 use bitcoin::secp256k1::PublicKey;
  45 use core::time::Duration;
  46 use crate::blinded_path::{BlindedPath, IntroductionNode};
  47 use crate::blinded_path::payment::{Bolt12OfferContext, Bolt12RefundContext, PaymentContext};
  48 use crate::events::{Event, MessageSendEventsProvider, PaymentPurpose};
  49 use crate::ln::channelmanager::{MAX_SHORT_LIVED_RELATIVE_EXPIRY, PaymentId, RecentPaymentDetails, Retry, self};
  50 use crate::ln::functional_test_utils::*;
  51 use crate::ln::msgs::{ChannelMessageHandler, Init, NodeAnnouncement, OnionMessage, OnionMessageHandler, RoutingMessageHandler, SocketAddress, UnsignedGossipMessage, UnsignedNodeAnnouncement};
  52 use crate::offers::invoice::Bolt12Invoice;
  53 use crate::offers::invoice_error::InvoiceError;
  54 use crate::offers::invoice_request::{InvoiceRequest, InvoiceRequestFields};
  55 use crate::offers::parse::Bolt12SemanticError;
  56 use crate::onion_message::messenger::PeeledOnion;
  57 use crate::onion_message::offers::OffersMessage;
  58 use crate::onion_message::packet::ParsedOnionMessageContents;
  59 use crate::routing::gossip::{NodeAlias, NodeId};
  60 use crate::sign::{NodeSigner, Recipient};
  61
  62 use crate::prelude::*;
  63
  64 macro_rules! expect_recent_payment {
  65         ($node: expr, $payment_state: path, $payment_id: expr) => {
  66                 match $node.node.list_recent_payments().first() {
  67                         Some(&$payment_state { payment_id: actual_payment_id, .. }) => {
  68                                 assert_eq!($payment_id, actual_payment_id);
  69                         },
  70                         Some(_) => panic!("Unexpected recent payment state"),
  71                         None => panic!("No recent payments"),
  72                 }
  73         }
  74 }
  75
  76 fn connect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, node_b: &Node<'a, 'b, 'c>) {
  77         let node_id_a = node_a.node.get_our_node_id();
  78         let node_id_b = node_b.node.get_our_node_id();
  79
  80         let init_a = Init {
  81                 features: node_a.init_features(&node_id_b),
  82                 networks: None,
  83                 remote_network_address: None,
  84         };
  85         let init_b = Init {
  86                 features: node_b.init_features(&node_id_a),
  87                 networks: None,
  88                 remote_network_address: None,
  89         };
  90
  91         node_a.node.peer_connected(&node_id_b, &init_b, true).unwrap();
  92         node_b.node.peer_connected(&node_id_a, &init_a, false).unwrap();
  93         node_a.onion_messenger.peer_connected(&node_id_b, &init_b, true).unwrap();
  94         node_b.onion_messenger.peer_connected(&node_id_a, &init_a, false).unwrap();
  95 }
  96
  97 fn disconnect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>]) {
  98         for node_b in peers {
  99                 node_a.node.peer_disconnected(&node_b.node.get_our_node_id());
 100                 node_b.node.peer_disconnected(&node_a.node.get_our_node_id());
 101                 node_a.onion_messenger.peer_disconnected(&node_b.node.get_our_node_id());
 102                 node_b.onion_messenger.peer_disconnected(&node_a.node.get_our_node_id());
 103         }
 104 }
 105
 106 fn announce_node_address<'a, 'b, 'c>(
 107         node: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>], address: SocketAddress,
 108 ) {
 109         let features = node.onion_messenger.provided_node_features()
 110                 | node.gossip_sync.provided_node_features();
 111         let rgb = [0u8; 3];
 112         let announcement = UnsignedNodeAnnouncement {
 113                 features,
 114                 timestamp: 1000,
 115                 node_id: NodeId::from_pubkey(&node.keys_manager.get_node_id(Recipient::Node).unwrap()),
 116                 rgb,
 117                 alias: NodeAlias([0u8; 32]),
 118                 addresses: vec![address],
 119                 excess_address_data: Vec::new(),
 120                 excess_data: Vec::new(),
 121         };
 122         let signature = node.keys_manager.sign_gossip_message(
 123                 UnsignedGossipMessage::NodeAnnouncement(&announcement)
 124         ).unwrap();
 125
 126         let msg = NodeAnnouncement {
 127                 signature,
 128                 contents: announcement
 129         };
 130
 131         node.gossip_sync.handle_node_announcement(&msg).unwrap();
 132         for peer in peers {
 133                 peer.gossip_sync.handle_node_announcement(&msg).unwrap();
 134         }
 135 }
 136
 137 fn resolve_introduction_node<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, path: &BlindedPath) -> PublicKey {
 138         path.public_introduction_node_id(&node.network_graph.read_only())
 139                 .and_then(|node_id| node_id.as_pubkey().ok())
 140                 .unwrap()
 141 }
 142
 143 fn route_bolt12_payment<'a, 'b, 'c>(
 144         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], invoice: &Bolt12Invoice
 145 ) {
 146         // Monitor added when handling the invoice onion message.
 147         check_added_monitors(node, 1);
 148
 149         let mut events = node.node.get_and_clear_pending_msg_events();
 150         assert_eq!(events.len(), 1);
 151         let ev = remove_first_msg_event_to_node(&path[0].node.get_our_node_id(), &mut events);
 152
 153         // Use a fake payment_hash and bypass checking for the PaymentClaimable event since the
 154         // invoice contains the payment_hash but it was encrypted inside an onion message.
 155         let amount_msats = invoice.amount_msats();
 156         let payment_hash = invoice.payment_hash();
 157         let args = PassAlongPathArgs::new(node, path, amount_msats, payment_hash, ev)
 158                 .without_clearing_recipient_events();
 159         do_pass_along_path(args);
 160 }
 161
 162 fn claim_bolt12_payment<'a, 'b, 'c>(
 163         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], expected_payment_context: PaymentContext
 164 ) {
 165         let recipient = &path[path.len() - 1];
 166         let payment_purpose = match get_event!(recipient, Event::PaymentClaimable) {
 167                 Event::PaymentClaimable { purpose, .. } => purpose,
 168                 _ => panic!("No Event::PaymentClaimable"),
 169         };
 170         let payment_preimage = match payment_purpose.preimage() {
 171                 Some(preimage) => preimage,
 172                 None => panic!("No preimage in Event::PaymentClaimable"),
 173         };
 174         match payment_purpose {
 175                 PaymentPurpose::Bolt12OfferPayment { payment_context, .. } => {
 176                         assert_eq!(PaymentContext::Bolt12Offer(payment_context), expected_payment_context);
 177                 },
 178                 PaymentPurpose::Bolt12RefundPayment { payment_context, .. } => {
 179                         assert_eq!(PaymentContext::Bolt12Refund(payment_context), expected_payment_context);
 180                 },
 181                 _ => panic!("Unexpected payment purpose: {:?}", payment_purpose),
 182         }
 183         claim_payment(node, path, payment_preimage);
 184 }
 185
 186 fn extract_invoice_request<'a, 'b, 'c>(
 187         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 188 ) -> (InvoiceRequest, BlindedPath) {
 189         match node.onion_messenger.peel_onion_message(message) {
 190                 Ok(PeeledOnion::Receive(message, _, reply_path)) => match message {
 191                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 192                                 OffersMessage::InvoiceRequest(invoice_request) => (invoice_request, reply_path.unwrap()),
 193                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 194                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 195                         },
 196                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 197                 },
 198                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 199                 Err(e) => panic!("Failed to process onion message {:?}", e),
 200         }
 201 }
 202
 203 fn extract_invoice<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, message: &OnionMessage) -> Bolt12Invoice {
 204         match node.onion_messenger.peel_onion_message(message) {
 205                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 206                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 207                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 208                                 OffersMessage::Invoice(invoice) => invoice,
 209                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 210                         },
 211                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 212                 },
 213                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 214                 Err(e) => panic!("Failed to process onion message {:?}", e),
 215         }
 216 }
 217
 218 fn extract_invoice_error<'a, 'b, 'c>(
 219         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 220 ) -> InvoiceError {
 221         match node.onion_messenger.peel_onion_message(message) {
 222                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 223                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 224                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 225                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 226                                 OffersMessage::InvoiceError(error) => error,
 227                         },
 228                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 229                 },
 230                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 231                 Err(e) => panic!("Failed to process onion message {:?}", e),
 232         }
 233 }
 234
 235 /// Checks that blinded paths without Tor-only nodes are preferred when constructing an offer.
 236 #[test]
 237 fn prefers_non_tor_nodes_in_blinded_paths() {
 238         let mut accept_forward_cfg = test_default_channel_config();
 239         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 240
 241         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 242         features.set_onion_messages_optional();
 243         features.set_route_blinding_optional();
 244
 245         let chanmon_cfgs = create_chanmon_cfgs(6);
 246         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 247
 248         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 249
 250         let node_chanmgrs = create_node_chanmgrs(
 251                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 252         );
 253         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 254
 255         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 256         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 257         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 258         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 259         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 260         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 261         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 262
 263         // Add an extra channel so that more than one of Bob's peers have MIN_PEER_CHANNELS.
 264         create_announced_chan_between_nodes_with_value(&nodes, 4, 5, 10_000_000, 1_000_000_000);
 265
 266         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 267         let bob_id = bob.node.get_our_node_id();
 268         let charlie_id = charlie.node.get_our_node_id();
 269
 270         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 271         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 272
 273         let tor = SocketAddress::OnionV2([255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 38, 7]);
 274         announce_node_address(charlie, &[alice, bob, david, &nodes[4], &nodes[5]], tor.clone());
 275
 276         let offer = bob.node
 277                 .create_offer_builder(None).unwrap()
 278                 .amount_msats(10_000_000)
 279                 .build().unwrap();
 280         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 281         assert!(!offer.paths().is_empty());
 282         for path in offer.paths() {
 283                 let introduction_node_id = resolve_introduction_node(david, &path);
 284                 assert_ne!(introduction_node_id, bob_id);
 285                 assert_ne!(introduction_node_id, charlie_id);
 286         }
 287
 288         // Use a one-hop blinded path when Bob is announced and all his peers are Tor-only.
 289         announce_node_address(&nodes[4], &[alice, bob, charlie, david, &nodes[5]], tor.clone());
 290         announce_node_address(&nodes[5], &[alice, bob, charlie, david, &nodes[4]], tor.clone());
 291
 292         let offer = bob.node
 293                 .create_offer_builder(None).unwrap()
 294                 .amount_msats(10_000_000)
 295                 .build().unwrap();
 296         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 297         assert!(!offer.paths().is_empty());
 298         for path in offer.paths() {
 299                 let introduction_node_id = resolve_introduction_node(david, &path);
 300                 assert_eq!(introduction_node_id, bob_id);
 301         }
 302 }
 303
 304 /// Checks that blinded paths prefer an introduction node that is the most connected.
 305 #[test]
 306 fn prefers_more_connected_nodes_in_blinded_paths() {
 307         let mut accept_forward_cfg = test_default_channel_config();
 308         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 309
 310         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 311         features.set_onion_messages_optional();
 312         features.set_route_blinding_optional();
 313
 314         let chanmon_cfgs = create_chanmon_cfgs(6);
 315         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 316
 317         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 318
 319         let node_chanmgrs = create_node_chanmgrs(
 320                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 321         );
 322         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 323
 324         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 325         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 326         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 327         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 328         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 329         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 330         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 331
 332         // Add extra channels so that more than one of Bob's peers have MIN_PEER_CHANNELS and one has
 333         // more than the others.
 334         create_announced_chan_between_nodes_with_value(&nodes, 0, 4, 10_000_000, 1_000_000_000);
 335         create_announced_chan_between_nodes_with_value(&nodes, 3, 4, 10_000_000, 1_000_000_000);
 336
 337         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 338         let bob_id = bob.node.get_our_node_id();
 339
 340         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 341         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 342
 343         let offer = bob.node
 344                 .create_offer_builder(None).unwrap()
 345                 .amount_msats(10_000_000)
 346                 .build().unwrap();
 347         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 348         assert!(!offer.paths().is_empty());
 349         for path in offer.paths() {
 350                 let introduction_node_id = resolve_introduction_node(david, &path);
 351                 assert_eq!(introduction_node_id, nodes[4].node.get_our_node_id());
 352         }
 353 }
 354
 355 /// Checks that blinded paths are compact for short-lived offers.
 356 #[test]
 357 fn creates_short_lived_offer() {
 358         let chanmon_cfgs = create_chanmon_cfgs(2);
 359         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 360         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 361         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 362
 363         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 364
 365         let alice = &nodes[0];
 366         let alice_id = alice.node.get_our_node_id();
 367         let bob = &nodes[1];
 368
 369         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
 370         let offer = alice.node
 371                 .create_offer_builder(Some(absolute_expiry)).unwrap()
 372                 .build().unwrap();
 373         assert_eq!(offer.absolute_expiry(), Some(absolute_expiry));
 374         assert!(!offer.paths().is_empty());
 375         for path in offer.paths() {
 376                 let introduction_node_id = resolve_introduction_node(bob, &path);
 377                 assert_eq!(introduction_node_id, alice_id);
 378                 assert!(matches!(path.introduction_node, IntroductionNode::DirectedShortChannelId(..)));
 379         }
 380 }
 381
 382 /// Checks that blinded paths are not compact for long-lived offers.
 383 #[test]
 384 fn creates_long_lived_offer() {
 385         let chanmon_cfgs = create_chanmon_cfgs(2);
 386         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 387         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 388         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 389
 390         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 391
 392         let alice = &nodes[0];
 393         let alice_id = alice.node.get_our_node_id();
 394
 395         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY
 396                 + Duration::from_secs(1);
 397         let offer = alice.node
 398                 .create_offer_builder(Some(absolute_expiry))
 399                 .unwrap()
 400                 .build().unwrap();
 401         assert_eq!(offer.absolute_expiry(), Some(absolute_expiry));
 402         assert!(!offer.paths().is_empty());
 403         for path in offer.paths() {
 404                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 405         }
 406
 407         let offer = alice.node
 408                 .create_offer_builder(None).unwrap()
 409                 .build().unwrap();
 410         assert_eq!(offer.absolute_expiry(), None);
 411         assert!(!offer.paths().is_empty());
 412         for path in offer.paths() {
 413                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 414         }
 415 }
 416
 417 /// Checks that blinded paths are compact for short-lived refunds.
 418 #[test]
 419 fn creates_short_lived_refund() {
 420         let chanmon_cfgs = create_chanmon_cfgs(2);
 421         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 422         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 423         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 424
 425         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 426
 427         let alice = &nodes[0];
 428         let bob = &nodes[1];
 429         let bob_id = bob.node.get_our_node_id();
 430
 431         let absolute_expiry = bob.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
 432         let payment_id = PaymentId([1; 32]);
 433         let refund = bob.node
 434                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 435                 .unwrap()
 436                 .build().unwrap();
 437         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 438         assert!(!refund.paths().is_empty());
 439         for path in refund.paths() {
 440                 let introduction_node_id = resolve_introduction_node(alice, &path);
 441                 assert_eq!(introduction_node_id, bob_id);
 442                 assert!(matches!(path.introduction_node, IntroductionNode::DirectedShortChannelId(..)));
 443         }
 444 }
 445
 446 /// Checks that blinded paths are not compact for long-lived refunds.
 447 #[test]
 448 fn creates_long_lived_refund() {
 449         let chanmon_cfgs = create_chanmon_cfgs(2);
 450         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 451         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 452         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 453
 454         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 455
 456         let bob = &nodes[1];
 457         let bob_id = bob.node.get_our_node_id();
 458
 459         let absolute_expiry = bob.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY
 460                 + Duration::from_secs(1);
 461         let payment_id = PaymentId([1; 32]);
 462         let refund = bob.node
 463                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 464                 .unwrap()
 465                 .build().unwrap();
 466         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 467         assert!(!refund.paths().is_empty());
 468         for path in refund.paths() {
 469                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 470         }
 471 }
 472
 473 /// Checks that an offer can be paid through blinded paths and that ephemeral pubkeys are used
 474 /// rather than exposing a node's pubkey.
 475 #[test]
 476 fn creates_and_pays_for_offer_using_two_hop_blinded_path() {
 477         let mut accept_forward_cfg = test_default_channel_config();
 478         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 479
 480         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 481         features.set_onion_messages_optional();
 482         features.set_route_blinding_optional();
 483
 484         let chanmon_cfgs = create_chanmon_cfgs(6);
 485         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 486
 487         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 488
 489         let node_chanmgrs = create_node_chanmgrs(
 490                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 491         );
 492         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 493
 494         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 495         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 496         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 497         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 498         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 499         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 500         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 501
 502         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 503         let alice_id = alice.node.get_our_node_id();
 504         let bob_id = bob.node.get_our_node_id();
 505         let charlie_id = charlie.node.get_our_node_id();
 506         let david_id = david.node.get_our_node_id();
 507
 508         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 509         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 510
 511         let offer = alice.node
 512                 .create_offer_builder(None)
 513                 .unwrap()
 514                 .amount_msats(10_000_000)
 515                 .build().unwrap();
 516         assert_ne!(offer.signing_pubkey(), Some(alice_id));
 517         assert!(!offer.paths().is_empty());
 518         for path in offer.paths() {
 519                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 520         }
 521
 522         let payment_id = PaymentId([1; 32]);
 523         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 524                 .unwrap();
 525         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 526
 527         connect_peers(david, bob);
 528
 529         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 530         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 531
 532         connect_peers(alice, charlie);
 533
 534         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 535         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 536
 537         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 538         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 539                 offer_id: offer.id(),
 540                 invoice_request: InvoiceRequestFields {
 541                         payer_id: invoice_request.payer_id(),
 542                         quantity: None,
 543                         payer_note_truncated: None,
 544                 },
 545         });
 546         assert_eq!(invoice_request.amount_msats(), None);
 547         assert_ne!(invoice_request.payer_id(), david_id);
 548         assert_eq!(reply_path.introduction_node, IntroductionNode::NodeId(charlie_id));
 549
 550         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 551         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 552
 553         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 554         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 555
 556         let invoice = extract_invoice(david, &onion_message);
 557         assert_eq!(invoice.amount_msats(), 10_000_000);
 558         assert_ne!(invoice.signing_pubkey(), alice_id);
 559         assert!(!invoice.payment_paths().is_empty());
 560         for (_, path) in invoice.payment_paths() {
 561                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 562         }
 563
 564         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 565         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 566
 567         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
 568         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 569 }
 570
 571 /// Checks that a refund can be paid through blinded paths and that ephemeral pubkeys are used
 572 /// rather than exposing a node's pubkey.
 573 #[test]
 574 fn creates_and_pays_for_refund_using_two_hop_blinded_path() {
 575         let mut accept_forward_cfg = test_default_channel_config();
 576         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 577
 578         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 579         features.set_onion_messages_optional();
 580         features.set_route_blinding_optional();
 581
 582         let chanmon_cfgs = create_chanmon_cfgs(6);
 583         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 584
 585         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 586
 587         let node_chanmgrs = create_node_chanmgrs(
 588                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 589         );
 590         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 591
 592         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 593         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 594         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 595         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 596         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 597         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 598         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 599
 600         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 601         let alice_id = alice.node.get_our_node_id();
 602         let bob_id = bob.node.get_our_node_id();
 603         let charlie_id = charlie.node.get_our_node_id();
 604         let david_id = david.node.get_our_node_id();
 605
 606         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 607         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 608
 609         let absolute_expiry = Duration::from_secs(u64::MAX);
 610         let payment_id = PaymentId([1; 32]);
 611         let refund = david.node
 612                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 613                 .unwrap()
 614                 .build().unwrap();
 615         assert_eq!(refund.amount_msats(), 10_000_000);
 616         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 617         assert_ne!(refund.payer_id(), david_id);
 618         assert!(!refund.paths().is_empty());
 619         for path in refund.paths() {
 620                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 621         }
 622         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 623
 624         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 625         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 626
 627         connect_peers(alice, charlie);
 628
 629         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 630         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 631
 632         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 633         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 634
 635         let invoice = extract_invoice(david, &onion_message);
 636         assert_eq!(invoice, expected_invoice);
 637
 638         assert_eq!(invoice.amount_msats(), 10_000_000);
 639         assert_ne!(invoice.signing_pubkey(), alice_id);
 640         assert!(!invoice.payment_paths().is_empty());
 641         for (_, path) in invoice.payment_paths() {
 642                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 643         }
 644
 645         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 646         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 647
 648         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
 649         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 650 }
 651
 652 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 653 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 654 /// introduction node of the blinded path.
 655 #[test]
 656 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 657         let chanmon_cfgs = create_chanmon_cfgs(2);
 658         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 659         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 660         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 661
 662         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 663
 664         let alice = &nodes[0];
 665         let alice_id = alice.node.get_our_node_id();
 666         let bob = &nodes[1];
 667         let bob_id = bob.node.get_our_node_id();
 668
 669         let offer = alice.node
 670                 .create_offer_builder(None).unwrap()
 671                 .amount_msats(10_000_000)
 672                 .build().unwrap();
 673         assert_ne!(offer.signing_pubkey(), Some(alice_id));
 674         assert!(!offer.paths().is_empty());
 675         for path in offer.paths() {
 676                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 677         }
 678
 679         let payment_id = PaymentId([1; 32]);
 680         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 681         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 682
 683         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 684         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 685
 686         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 687         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 688                 offer_id: offer.id(),
 689                 invoice_request: InvoiceRequestFields {
 690                         payer_id: invoice_request.payer_id(),
 691                         quantity: None,
 692                         payer_note_truncated: None,
 693                 },
 694         });
 695         assert_eq!(invoice_request.amount_msats(), None);
 696         assert_ne!(invoice_request.payer_id(), bob_id);
 697         assert_eq!(reply_path.introduction_node, IntroductionNode::NodeId(bob_id));
 698
 699         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 700         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 701
 702         let invoice = extract_invoice(bob, &onion_message);
 703         assert_eq!(invoice.amount_msats(), 10_000_000);
 704         assert_ne!(invoice.signing_pubkey(), alice_id);
 705         assert!(!invoice.payment_paths().is_empty());
 706         for (_, path) in invoice.payment_paths() {
 707                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 708         }
 709
 710         route_bolt12_payment(bob, &[alice], &invoice);
 711         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 712
 713         claim_bolt12_payment(bob, &[alice], payment_context);
 714         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 715 }
 716
 717 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 718 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 719 /// introduction node of the blinded path.
 720 #[test]
 721 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 722         let chanmon_cfgs = create_chanmon_cfgs(2);
 723         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 724         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 725         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 726
 727         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 728
 729         let alice = &nodes[0];
 730         let alice_id = alice.node.get_our_node_id();
 731         let bob = &nodes[1];
 732         let bob_id = bob.node.get_our_node_id();
 733
 734         let absolute_expiry = Duration::from_secs(u64::MAX);
 735         let payment_id = PaymentId([1; 32]);
 736         let refund = bob.node
 737                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 738                 .unwrap()
 739                 .build().unwrap();
 740         assert_eq!(refund.amount_msats(), 10_000_000);
 741         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 742         assert_ne!(refund.payer_id(), bob_id);
 743         assert!(!refund.paths().is_empty());
 744         for path in refund.paths() {
 745                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 746         }
 747         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 748
 749         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 750         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 751
 752         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 753         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 754
 755         let invoice = extract_invoice(bob, &onion_message);
 756         assert_eq!(invoice, expected_invoice);
 757
 758         assert_eq!(invoice.amount_msats(), 10_000_000);
 759         assert_ne!(invoice.signing_pubkey(), alice_id);
 760         assert!(!invoice.payment_paths().is_empty());
 761         for (_, path) in invoice.payment_paths() {
 762                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 763         }
 764
 765         route_bolt12_payment(bob, &[alice], &invoice);
 766         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 767
 768         claim_bolt12_payment(bob, &[alice], payment_context);
 769         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 770 }
 771
 772 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 773 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 774 /// blinded paths as required by the spec.
 775 #[test]
 776 fn pays_for_offer_without_blinded_paths() {
 777         let chanmon_cfgs = create_chanmon_cfgs(2);
 778         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 779         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 780         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 781
 782         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 783
 784         let alice = &nodes[0];
 785         let alice_id = alice.node.get_our_node_id();
 786         let bob = &nodes[1];
 787         let bob_id = bob.node.get_our_node_id();
 788
 789         let offer = alice.node
 790                 .create_offer_builder(None).unwrap()
 791                 .clear_paths()
 792                 .amount_msats(10_000_000)
 793                 .build().unwrap();
 794         assert_eq!(offer.signing_pubkey(), Some(alice_id));
 795         assert!(offer.paths().is_empty());
 796
 797         let payment_id = PaymentId([1; 32]);
 798         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 799         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 800
 801         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 802         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 803
 804         let (invoice_request, _) = extract_invoice_request(alice, &onion_message);
 805         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 806                 offer_id: offer.id(),
 807                 invoice_request: InvoiceRequestFields {
 808                         payer_id: invoice_request.payer_id(),
 809                         quantity: None,
 810                         payer_note_truncated: None,
 811                 },
 812         });
 813
 814         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 815         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 816
 817         let invoice = extract_invoice(bob, &onion_message);
 818         route_bolt12_payment(bob, &[alice], &invoice);
 819         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 820
 821         claim_bolt12_payment(bob, &[alice], payment_context);
 822         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 823 }
 824
 825 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 826 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 827 #[test]
 828 fn pays_for_refund_without_blinded_paths() {
 829         let chanmon_cfgs = create_chanmon_cfgs(2);
 830         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 831         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 832         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 833
 834         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 835
 836         let alice = &nodes[0];
 837         let alice_id = alice.node.get_our_node_id();
 838         let bob = &nodes[1];
 839         let bob_id = bob.node.get_our_node_id();
 840
 841         let absolute_expiry = Duration::from_secs(u64::MAX);
 842         let payment_id = PaymentId([1; 32]);
 843         let refund = bob.node
 844                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 845                 .unwrap()
 846                 .clear_paths()
 847                 .build().unwrap();
 848         assert_eq!(refund.payer_id(), bob_id);
 849         assert!(refund.paths().is_empty());
 850         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 851
 852         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 853         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 854
 855         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 856         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 857
 858         let invoice = extract_invoice(bob, &onion_message);
 859         assert_eq!(invoice, expected_invoice);
 860
 861         route_bolt12_payment(bob, &[alice], &invoice);
 862         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 863
 864         claim_bolt12_payment(bob, &[alice], payment_context);
 865         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 866 }
 867
 868 /// Fails creating an offer when a blinded path cannot be created without exposing the node's id.
 869 #[test]
 870 fn fails_creating_offer_without_blinded_paths() {
 871         let chanmon_cfgs = create_chanmon_cfgs(2);
 872         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 873         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 874         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 875
 876         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 877
 878         match nodes[0].node.create_offer_builder(None) {
 879                 Ok(_) => panic!("Expected error"),
 880                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 881         }
 882 }
 883
 884 /// Fails creating a refund when a blinded path cannot be created without exposing the node's id.
 885 #[test]
 886 fn fails_creating_refund_without_blinded_paths() {
 887         let chanmon_cfgs = create_chanmon_cfgs(2);
 888         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 889         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 890         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 891
 892         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 893
 894         let absolute_expiry = Duration::from_secs(u64::MAX);
 895         let payment_id = PaymentId([1; 32]);
 896
 897         match nodes[0].node.create_refund_builder(
 898                 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 899         ) {
 900                 Ok(_) => panic!("Expected error"),
 901                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 902         }
 903
 904         assert!(nodes[0].node.list_recent_payments().is_empty());
 905 }
 906
 907 /// Fails creating or paying an offer when a blinded path cannot be created because no peers are
 908 /// connected.
 909 #[test]
 910 fn fails_creating_or_paying_for_offer_without_connected_peers() {
 911         let chanmon_cfgs = create_chanmon_cfgs(6);
 912         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 913         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 914         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 915
 916         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 917         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 918         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 919         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 920         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 921         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 922         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 923
 924         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 925
 926         disconnect_peers(alice, &[bob, charlie, david, &nodes[4], &nodes[5]]);
 927         disconnect_peers(david, &[bob, charlie, &nodes[4], &nodes[5]]);
 928
 929         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
 930         match alice.node.create_offer_builder(Some(absolute_expiry)) {
 931                 Ok(_) => panic!("Expected error"),
 932                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 933         }
 934
 935         let mut args = ReconnectArgs::new(alice, bob);
 936         args.send_channel_ready = (true, true);
 937         reconnect_nodes(args);
 938
 939         let offer = alice.node
 940                 .create_offer_builder(Some(absolute_expiry)).unwrap()
 941                 .amount_msats(10_000_000)
 942                 .build().unwrap();
 943
 944         let payment_id = PaymentId([1; 32]);
 945
 946         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 947                 Ok(_) => panic!("Expected error"),
 948                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 949         }
 950
 951         assert!(nodes[0].node.list_recent_payments().is_empty());
 952
 953         let mut args = ReconnectArgs::new(charlie, david);
 954         args.send_channel_ready = (true, true);
 955         reconnect_nodes(args);
 956
 957         assert!(
 958                 david.node.pay_for_offer(
 959                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
 960                 ).is_ok()
 961         );
 962
 963         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 964 }
 965
 966 /// Fails creating or sending an invoice for a refund when a blinded path cannot be created because
 967 /// no peers are connected.
 968 #[test]
 969 fn fails_creating_refund_or_sending_invoice_without_connected_peers() {
 970         let mut accept_forward_cfg = test_default_channel_config();
 971         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 972
 973         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 974         features.set_onion_messages_optional();
 975         features.set_route_blinding_optional();
 976
 977         let chanmon_cfgs = create_chanmon_cfgs(6);
 978         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 979
 980         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 981
 982         let node_chanmgrs = create_node_chanmgrs(
 983                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 984         );
 985         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 986
 987         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 988         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 989         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 990         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 991         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 992         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 993         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 994
 995         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 996
 997         disconnect_peers(alice, &[bob, charlie, david, &nodes[4], &nodes[5]]);
 998         disconnect_peers(david, &[bob, charlie, &nodes[4], &nodes[5]]);
 999
1000         let absolute_expiry = david.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
1001         let payment_id = PaymentId([1; 32]);
1002         match david.node.create_refund_builder(
1003                 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1004         ) {
1005                 Ok(_) => panic!("Expected error"),
1006                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1007         }
1008
1009         let mut args = ReconnectArgs::new(charlie, david);
1010         args.send_channel_ready = (true, true);
1011         reconnect_nodes(args);
1012
1013         let refund = david.node
1014                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1015                 .unwrap()
1016                 .build().unwrap();
1017
1018         match alice.node.request_refund_payment(&refund) {
1019                 Ok(_) => panic!("Expected error"),
1020                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1021         }
1022
1023         let mut args = ReconnectArgs::new(alice, bob);
1024         args.send_channel_ready = (true, true);
1025         reconnect_nodes(args);
1026
1027         assert!(alice.node.request_refund_payment(&refund).is_ok());
1028 }
1029
1030 /// Fails creating an invoice request when the offer contains an unsupported chain.
1031 #[test]
1032 fn fails_creating_invoice_request_for_unsupported_chain() {
1033         let chanmon_cfgs = create_chanmon_cfgs(2);
1034         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1035         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1036         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1037
1038         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1039
1040         let alice = &nodes[0];
1041         let bob = &nodes[1];
1042
1043         let offer = alice.node
1044                 .create_offer_builder(None).unwrap()
1045                 .clear_chains()
1046                 .chain(Network::Signet)
1047                 .build().unwrap();
1048
1049         let payment_id = PaymentId([1; 32]);
1050         match bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1051                 Ok(_) => panic!("Expected error"),
1052                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
1053         }
1054 }
1055
1056 /// Fails requesting a payment when the refund contains an unsupported chain.
1057 #[test]
1058 fn fails_sending_invoice_with_unsupported_chain_for_refund() {
1059         let chanmon_cfgs = create_chanmon_cfgs(2);
1060         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1061         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1062         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1063
1064         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1065
1066         let alice = &nodes[0];
1067         let bob = &nodes[1];
1068
1069         let absolute_expiry = Duration::from_secs(u64::MAX);
1070         let payment_id = PaymentId([1; 32]);
1071         let refund = bob.node
1072                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1073                 .unwrap()
1074                 .chain(Network::Signet)
1075                 .build().unwrap();
1076
1077         match alice.node.request_refund_payment(&refund) {
1078                 Ok(_) => panic!("Expected error"),
1079                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
1080         }
1081 }
1082
1083 /// Fails creating an invoice request when a blinded reply path cannot be created without exposing
1084 /// the node's id.
1085 #[test]
1086 fn fails_creating_invoice_request_without_blinded_reply_path() {
1087         let chanmon_cfgs = create_chanmon_cfgs(6);
1088         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1089         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1090         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1091
1092         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1093         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1094         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1095         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1096         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1097
1098         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1099
1100         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1101         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1102
1103         let offer = alice.node
1104                 .create_offer_builder(None).unwrap()
1105                 .amount_msats(10_000_000)
1106                 .build().unwrap();
1107
1108         let payment_id = PaymentId([1; 32]);
1109
1110         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1111                 Ok(_) => panic!("Expected error"),
1112                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1113         }
1114
1115         assert!(nodes[0].node.list_recent_payments().is_empty());
1116 }
1117
1118 #[test]
1119 fn fails_creating_invoice_request_with_duplicate_payment_id() {
1120         let chanmon_cfgs = create_chanmon_cfgs(6);
1121         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1122         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1123         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1124
1125         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1126         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1127         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1128         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1129         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1130         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1131         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1132
1133         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1134
1135         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1136
1137         let offer = alice.node
1138                 .create_offer_builder(None).unwrap()
1139                 .amount_msats(10_000_000)
1140                 .build().unwrap();
1141
1142         let payment_id = PaymentId([1; 32]);
1143         assert!(
1144                 david.node.pay_for_offer(
1145                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
1146                 ).is_ok()
1147         );
1148         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1149
1150         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1151                 Ok(_) => panic!("Expected error"),
1152                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
1153         }
1154
1155         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1156 }
1157
1158 #[test]
1159 fn fails_creating_refund_with_duplicate_payment_id() {
1160         let chanmon_cfgs = create_chanmon_cfgs(2);
1161         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1162         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1163         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1164
1165         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1166
1167         let absolute_expiry = Duration::from_secs(u64::MAX);
1168         let payment_id = PaymentId([1; 32]);
1169         assert!(
1170                 nodes[0].node.create_refund_builder(
1171                         10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1172                 ).is_ok()
1173         );
1174         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
1175
1176         match nodes[0].node.create_refund_builder(
1177                 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1178         ) {
1179                 Ok(_) => panic!("Expected error"),
1180                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
1181         }
1182
1183         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
1184 }
1185
1186 #[test]
1187 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
1188         let mut accept_forward_cfg = test_default_channel_config();
1189         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1190
1191         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
1192         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1193         features.set_onion_messages_optional();
1194         features.clear_route_blinding();
1195
1196         let chanmon_cfgs = create_chanmon_cfgs(6);
1197         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1198
1199         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1200
1201         let node_chanmgrs = create_node_chanmgrs(
1202                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1203         );
1204         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1205
1206         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1207         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1208         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1209         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1210         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1211         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1212         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1213
1214         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1215         let alice_id = alice.node.get_our_node_id();
1216         let bob_id = bob.node.get_our_node_id();
1217         let charlie_id = charlie.node.get_our_node_id();
1218         let david_id = david.node.get_our_node_id();
1219
1220         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1221         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1222
1223         let offer = alice.node
1224                 .create_offer_builder(None).unwrap()
1225                 .amount_msats(10_000_000)
1226                 .build().unwrap();
1227
1228         let payment_id = PaymentId([1; 32]);
1229         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
1230                 .unwrap();
1231
1232         connect_peers(david, bob);
1233
1234         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1235         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1236
1237         connect_peers(alice, charlie);
1238
1239         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1240         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1241
1242         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1243         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1244
1245         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1246         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1247
1248         let invoice_error = extract_invoice_error(david, &onion_message);
1249         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
1250 }
1251
1252 #[test]
1253 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
1254         let mut accept_forward_cfg = test_default_channel_config();
1255         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1256
1257         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
1258         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1259         features.set_onion_messages_optional();
1260         features.clear_route_blinding();
1261
1262         let chanmon_cfgs = create_chanmon_cfgs(6);
1263         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1264
1265         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1266
1267         let node_chanmgrs = create_node_chanmgrs(
1268                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1269         );
1270         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1271
1272         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1273         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1274         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1275         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1276         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1277         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1278         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1279
1280         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1281
1282         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1283         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1284
1285         let absolute_expiry = Duration::from_secs(u64::MAX);
1286         let payment_id = PaymentId([1; 32]);
1287         let refund = david.node
1288                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1289                 .unwrap()
1290                 .build().unwrap();
1291
1292         match alice.node.request_refund_payment(&refund) {
1293                 Ok(_) => panic!("Expected error"),
1294                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1295         }
1296 }
1297
1298 #[test]
1299 fn fails_paying_invoice_more_than_once() {
1300         let mut accept_forward_cfg = test_default_channel_config();
1301         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1302
1303         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1304         features.set_onion_messages_optional();
1305         features.set_route_blinding_optional();
1306
1307         let chanmon_cfgs = create_chanmon_cfgs(6);
1308         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1309
1310         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1311
1312         let node_chanmgrs = create_node_chanmgrs(
1313                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1314         );
1315         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1316
1317         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1318         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1319         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1320         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1321         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1322         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1323         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1324
1325         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1326         let alice_id = alice.node.get_our_node_id();
1327         let bob_id = bob.node.get_our_node_id();
1328         let charlie_id = charlie.node.get_our_node_id();
1329         let david_id = david.node.get_our_node_id();
1330
1331         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1332         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1333
1334         let absolute_expiry = Duration::from_secs(u64::MAX);
1335         let payment_id = PaymentId([1; 32]);
1336         let refund = david.node
1337                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1338                 .unwrap()
1339                 .build().unwrap();
1340         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1341
1342         // Alice sends the first invoice
1343         alice.node.request_refund_payment(&refund).unwrap();
1344
1345         connect_peers(alice, charlie);
1346
1347         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1348         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1349
1350         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1351         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1352
1353         // David pays the first invoice
1354         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
1355         let invoice1 = extract_invoice(david, &onion_message);
1356
1357         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
1358         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
1359
1360         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
1361         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1362
1363         disconnect_peers(alice, &[charlie]);
1364
1365         // Alice sends the second invoice
1366         alice.node.request_refund_payment(&refund).unwrap();
1367
1368         connect_peers(alice, charlie);
1369         connect_peers(david, bob);
1370
1371         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1372         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1373
1374         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1375         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1376
1377         let invoice2 = extract_invoice(david, &onion_message);
1378         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1379
1380         // David sends an error instead of paying the second invoice
1381         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1382         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1383
1384         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1385         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1386
1387         let invoice_error = extract_invoice_error(alice, &onion_message);
1388         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1389 }