1 //! Convenient utilities to create an invoice.
3 use crate::{CreationError, Currency, Invoice, InvoiceBuilder, SignOrCreationError};
5 use crate::{prelude::*, Description, InvoiceDescription, Sha256};
7 use bitcoin_hashes::Hash;
9 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
10 use lightning::chain::keysinterface::{Recipient, NodeSigner, SignerProvider, EntropySource};
11 use lightning::ln::{PaymentHash, PaymentSecret};
12 use lightning::ln::channelmanager::{ChannelDetails, ChannelManager, MIN_FINAL_CLTV_EXPIRY_DELTA};
13 use lightning::ln::channelmanager::{PhantomRouteHints, MIN_CLTV_EXPIRY_DELTA};
14 use lightning::ln::inbound_payment::{create, create_from_hash, ExpandedKey};
15 use lightning::routing::gossip::RoutingFees;
16 use lightning::routing::router::{RouteHint, RouteHintHop, Router};
17 use lightning::util::logger::Logger;
18 use secp256k1::PublicKey;
20 use core::time::Duration;
22 /// Utility to create an invoice that can be paid to one of multiple nodes, or a "phantom invoice."
23 /// See [`PhantomKeysManager`] for more information on phantom node payments.
25 /// `phantom_route_hints` parameter:
26 /// * Contains channel info for all nodes participating in the phantom invoice
27 /// * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
28 /// participating node
29 /// * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
30 /// updated when a channel becomes disabled or closes
31 /// * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
32 /// may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
35 /// `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
36 /// between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
37 /// If `None` is provided for `payment_hash`, then one will be created.
39 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
40 /// in excess of the current time.
42 /// `duration_since_epoch` is the current time since epoch in seconds.
44 /// You can specify a custom `min_final_cltv_expiry_delta`, or let LDK default it to
45 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]. The provided expiry must be at least [`MIN_FINAL_CLTV_EXPIRY_DELTA`] - 3.
46 /// Note that LDK will add a buffer of 3 blocks to the delta to allow for up to a few new block
47 /// confirmations during routing.
49 /// Note that the provided `keys_manager`'s `NodeSigner` implementation must support phantom
50 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
53 /// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
54 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
55 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
56 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
57 /// [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
58 /// [`MIN_FINAL_CLTV_EXPIRY_DETLA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
60 /// This can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
61 /// available and the current time is supplied by the caller.
62 pub fn create_phantom_invoice<ES: Deref, NS: Deref, L: Deref>(
63 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, description: String,
64 invoice_expiry_delta_secs: u32, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
65 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>, duration_since_epoch: Duration,
66 ) -> Result<Invoice, SignOrCreationError<()>>
68 ES::Target: EntropySource,
69 NS::Target: NodeSigner,
72 let description = Description::new(description).map_err(SignOrCreationError::CreationError)?;
73 let description = InvoiceDescription::Direct(&description,);
74 _create_phantom_invoice::<ES, NS, L>(
75 amt_msat, payment_hash, description, invoice_expiry_delta_secs, phantom_route_hints,
76 entropy_source, node_signer, logger, network, min_final_cltv_expiry_delta, duration_since_epoch,
80 /// Utility to create an invoice that can be paid to one of multiple nodes, or a "phantom invoice."
81 /// See [`PhantomKeysManager`] for more information on phantom node payments.
83 /// `phantom_route_hints` parameter:
84 /// * Contains channel info for all nodes participating in the phantom invoice
85 /// * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
86 /// participating node
87 /// * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
88 /// updated when a channel becomes disabled or closes
89 /// * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
90 /// may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
93 /// `description_hash` is a SHA-256 hash of the description text
95 /// `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
96 /// between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
97 /// If `None` is provided for `payment_hash`, then one will be created.
99 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
100 /// in excess of the current time.
102 /// `duration_since_epoch` is the current time since epoch in seconds.
104 /// Note that the provided `keys_manager`'s `NodeSigner` implementation must support phantom
105 /// invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
108 /// [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
109 /// [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
110 /// [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
111 /// [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
112 /// [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
114 /// This can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
115 /// available and the current time is supplied by the caller.
116 pub fn create_phantom_invoice_with_description_hash<ES: Deref, NS: Deref, L: Deref>(
117 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, invoice_expiry_delta_secs: u32,
118 description_hash: Sha256, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
119 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>, duration_since_epoch: Duration,
120 ) -> Result<Invoice, SignOrCreationError<()>>
122 ES::Target: EntropySource,
123 NS::Target: NodeSigner,
126 _create_phantom_invoice::<ES, NS, L>(
127 amt_msat, payment_hash, InvoiceDescription::Hash(&description_hash),
128 invoice_expiry_delta_secs, phantom_route_hints, entropy_source, node_signer, logger, network,
129 min_final_cltv_expiry_delta, duration_since_epoch,
133 fn _create_phantom_invoice<ES: Deref, NS: Deref, L: Deref>(
134 amt_msat: Option<u64>, payment_hash: Option<PaymentHash>, description: InvoiceDescription,
135 invoice_expiry_delta_secs: u32, phantom_route_hints: Vec<PhantomRouteHints>, entropy_source: ES,
136 node_signer: NS, logger: L, network: Currency, min_final_cltv_expiry_delta: Option<u16>, duration_since_epoch: Duration,
137 ) -> Result<Invoice, SignOrCreationError<()>>
139 ES::Target: EntropySource,
140 NS::Target: NodeSigner,
144 if phantom_route_hints.len() == 0 {
145 return Err(SignOrCreationError::CreationError(
146 CreationError::MissingRouteHints,
150 if min_final_cltv_expiry_delta.is_some() && min_final_cltv_expiry_delta.unwrap().saturating_add(3) < MIN_FINAL_CLTV_EXPIRY_DELTA {
151 return Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort));
154 let invoice = match description {
155 InvoiceDescription::Direct(description) => {
156 InvoiceBuilder::new(network).description(description.0.clone())
158 InvoiceDescription::Hash(hash) => InvoiceBuilder::new(network).description_hash(hash.0),
161 // If we ever see performance here being too slow then we should probably take this ExpandedKey as a parameter instead.
162 let keys = ExpandedKey::new(&node_signer.get_inbound_payment_key_material());
163 let (payment_hash, payment_secret) = if let Some(payment_hash) = payment_hash {
164 let payment_secret = create_from_hash(
168 invoice_expiry_delta_secs,
171 min_final_cltv_expiry_delta,
173 .map_err(|_| SignOrCreationError::CreationError(CreationError::InvalidAmount))?;
174 (payment_hash, payment_secret)
179 invoice_expiry_delta_secs,
183 min_final_cltv_expiry_delta,
185 .map_err(|_| SignOrCreationError::CreationError(CreationError::InvalidAmount))?
188 log_trace!(logger, "Creating phantom invoice from {} participating nodes with payment hash {}",
189 phantom_route_hints.len(), log_bytes!(payment_hash.0));
191 let mut invoice = invoice
192 .duration_since_epoch(duration_since_epoch)
193 .payment_hash(Hash::from_slice(&payment_hash.0).unwrap())
194 .payment_secret(payment_secret)
195 .min_final_cltv_expiry_delta(
196 // Add a buffer of 3 to the delta if present, otherwise use LDK's minimum.
197 min_final_cltv_expiry_delta.map(|x| x.saturating_add(3)).unwrap_or(MIN_FINAL_CLTV_EXPIRY_DELTA).into())
198 .expiry_time(Duration::from_secs(invoice_expiry_delta_secs.into()));
199 if let Some(amt) = amt_msat {
200 invoice = invoice.amount_milli_satoshis(amt);
203 for PhantomRouteHints { channels, phantom_scid, real_node_pubkey } in phantom_route_hints {
204 log_trace!(logger, "Generating phantom route hints for node {}",
205 log_pubkey!(real_node_pubkey));
206 let mut route_hints = filter_channels(channels, amt_msat, &logger);
208 // If we have any public channel, the route hints from `filter_channels` will be empty.
209 // In that case we create a RouteHint on which we will push a single hop with the phantom
210 // route into the invoice, and let the sender find the path to the `real_node_pubkey`
211 // node by looking at our public channels.
212 if route_hints.is_empty() {
213 route_hints.push(RouteHint(vec![]))
215 for mut route_hint in route_hints {
216 route_hint.0.push(RouteHintHop {
217 src_node_id: real_node_pubkey,
218 short_channel_id: phantom_scid,
221 proportional_millionths: 0,
223 cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA,
224 htlc_minimum_msat: None,
225 htlc_maximum_msat: None,});
226 invoice = invoice.private_route(route_hint.clone());
230 let raw_invoice = match invoice.build_raw() {
232 Err(e) => return Err(SignOrCreationError::CreationError(e))
234 let hrp_str = raw_invoice.hrp.to_string();
235 let hrp_bytes = hrp_str.as_bytes();
236 let data_without_signature = raw_invoice.data.to_base32();
237 let signed_raw_invoice = raw_invoice.sign(|_| node_signer.sign_invoice(hrp_bytes, &data_without_signature, Recipient::PhantomNode));
238 match signed_raw_invoice {
239 Ok(inv) => Ok(Invoice::from_signed(inv).unwrap()),
240 Err(e) => Err(SignOrCreationError::SignError(e))
244 #[cfg(feature = "std")]
245 /// Utility to construct an invoice. Generally, unless you want to do something like a custom
246 /// cltv_expiry, this is what you should be using to create an invoice. The reason being, this
247 /// method stores the invoice's payment secret and preimage in `ChannelManager`, so (a) the user
248 /// doesn't have to store preimage/payment secret information and (b) `ChannelManager` can verify
249 /// that the payment secret is valid when the invoice is paid.
251 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
252 /// in excess of the current time.
254 /// You can specify a custom `min_final_cltv_expiry_delta`, or let LDK default it to
255 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]. The provided expiry must be at least [`MIN_FINAL_CLTV_EXPIRY_DELTA`].
256 /// Note that LDK will add a buffer of 3 blocks to the delta to allow for up to a few new block
257 /// confirmations during routing.
259 /// [`MIN_FINAL_CLTV_EXPIRY_DETLA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
260 pub fn create_invoice_from_channelmanager<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
261 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
262 network: Currency, amt_msat: Option<u64>, description: String, invoice_expiry_delta_secs: u32,
263 min_final_cltv_expiry_delta: Option<u16>,
264 ) -> Result<Invoice, SignOrCreationError<()>>
266 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
267 T::Target: BroadcasterInterface,
268 ES::Target: EntropySource,
269 NS::Target: NodeSigner,
270 SP::Target: SignerProvider,
271 F::Target: FeeEstimator,
275 use std::time::SystemTime;
276 let duration = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)
277 .expect("for the foreseeable future this shouldn't happen");
278 create_invoice_from_channelmanager_and_duration_since_epoch(
279 channelmanager, node_signer, logger, network, amt_msat,
280 description, duration, invoice_expiry_delta_secs, min_final_cltv_expiry_delta,
284 #[cfg(feature = "std")]
285 /// Utility to construct an invoice. Generally, unless you want to do something like a custom
286 /// cltv_expiry, this is what you should be using to create an invoice. The reason being, this
287 /// method stores the invoice's payment secret and preimage in `ChannelManager`, so (a) the user
288 /// doesn't have to store preimage/payment secret information and (b) `ChannelManager` can verify
289 /// that the payment secret is valid when the invoice is paid.
290 /// Use this variant if you want to pass the `description_hash` to the invoice.
292 /// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
293 /// in excess of the current time.
295 /// You can specify a custom `min_final_cltv_expiry_delta`, or let LDK default it to
296 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]. The provided expiry must be at least [`MIN_FINAL_CLTV_EXPIRY_DELTA`].
297 /// Note that LDK will add a buffer of 3 blocks to the delta to allow for up to a few new block
298 /// confirmations during routing.
300 /// [`MIN_FINAL_CLTV_EXPIRY_DETLA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
301 pub fn create_invoice_from_channelmanager_with_description_hash<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
302 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
303 network: Currency, amt_msat: Option<u64>, description_hash: Sha256,
304 invoice_expiry_delta_secs: u32, min_final_cltv_expiry_delta: Option<u16>,
305 ) -> Result<Invoice, SignOrCreationError<()>>
307 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
308 T::Target: BroadcasterInterface,
309 ES::Target: EntropySource,
310 NS::Target: NodeSigner,
311 SP::Target: SignerProvider,
312 F::Target: FeeEstimator,
316 use std::time::SystemTime;
318 let duration = SystemTime::now()
319 .duration_since(SystemTime::UNIX_EPOCH)
320 .expect("for the foreseeable future this shouldn't happen");
322 create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch(
323 channelmanager, node_signer, logger, network, amt_msat,
324 description_hash, duration, invoice_expiry_delta_secs, min_final_cltv_expiry_delta,
328 /// See [`create_invoice_from_channelmanager_with_description_hash`]
329 /// This version can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
330 /// available and the current time is supplied by the caller.
331 pub fn create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
332 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
333 network: Currency, amt_msat: Option<u64>, description_hash: Sha256,
334 duration_since_epoch: Duration, invoice_expiry_delta_secs: u32, min_final_cltv_expiry_delta: Option<u16>,
335 ) -> Result<Invoice, SignOrCreationError<()>>
337 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
338 T::Target: BroadcasterInterface,
339 ES::Target: EntropySource,
340 NS::Target: NodeSigner,
341 SP::Target: SignerProvider,
342 F::Target: FeeEstimator,
346 _create_invoice_from_channelmanager_and_duration_since_epoch(
347 channelmanager, node_signer, logger, network, amt_msat,
348 InvoiceDescription::Hash(&description_hash),
349 duration_since_epoch, invoice_expiry_delta_secs, min_final_cltv_expiry_delta,
353 /// See [`create_invoice_from_channelmanager`]
354 /// This version can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
355 /// available and the current time is supplied by the caller.
356 pub fn create_invoice_from_channelmanager_and_duration_since_epoch<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
357 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
358 network: Currency, amt_msat: Option<u64>, description: String, duration_since_epoch: Duration,
359 invoice_expiry_delta_secs: u32, min_final_cltv_expiry_delta: Option<u16>,
360 ) -> Result<Invoice, SignOrCreationError<()>>
362 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
363 T::Target: BroadcasterInterface,
364 ES::Target: EntropySource,
365 NS::Target: NodeSigner,
366 SP::Target: SignerProvider,
367 F::Target: FeeEstimator,
371 _create_invoice_from_channelmanager_and_duration_since_epoch(
372 channelmanager, node_signer, logger, network, amt_msat,
373 InvoiceDescription::Direct(
374 &Description::new(description).map_err(SignOrCreationError::CreationError)?,
376 duration_since_epoch, invoice_expiry_delta_secs, min_final_cltv_expiry_delta,
380 fn _create_invoice_from_channelmanager_and_duration_since_epoch<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
381 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
382 network: Currency, amt_msat: Option<u64>, description: InvoiceDescription,
383 duration_since_epoch: Duration, invoice_expiry_delta_secs: u32, min_final_cltv_expiry_delta: Option<u16>,
384 ) -> Result<Invoice, SignOrCreationError<()>>
386 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
387 T::Target: BroadcasterInterface,
388 ES::Target: EntropySource,
389 NS::Target: NodeSigner,
390 SP::Target: SignerProvider,
391 F::Target: FeeEstimator,
395 if min_final_cltv_expiry_delta.is_some() && min_final_cltv_expiry_delta.unwrap().saturating_add(3) < MIN_FINAL_CLTV_EXPIRY_DELTA {
396 return Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort));
399 // `create_inbound_payment` only returns an error if the amount is greater than the total bitcoin
401 let (payment_hash, payment_secret) = channelmanager
402 .create_inbound_payment(amt_msat, invoice_expiry_delta_secs, min_final_cltv_expiry_delta)
403 .map_err(|()| SignOrCreationError::CreationError(CreationError::InvalidAmount))?;
404 _create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(
405 channelmanager, node_signer, logger, network, amt_msat, description, duration_since_epoch,
406 invoice_expiry_delta_secs, payment_hash, payment_secret, min_final_cltv_expiry_delta)
409 /// See [`create_invoice_from_channelmanager_and_duration_since_epoch`]
410 /// This version allows for providing a custom [`PaymentHash`] for the invoice.
411 /// This may be useful if you're building an on-chain swap or involving another protocol where
412 /// the payment hash is also involved outside the scope of lightning.
413 pub fn create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
414 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
415 network: Currency, amt_msat: Option<u64>, description: String, duration_since_epoch: Duration,
416 invoice_expiry_delta_secs: u32, payment_hash: PaymentHash, min_final_cltv_expiry_delta: Option<u16>,
417 ) -> Result<Invoice, SignOrCreationError<()>>
419 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
420 T::Target: BroadcasterInterface,
421 ES::Target: EntropySource,
422 NS::Target: NodeSigner,
423 SP::Target: SignerProvider,
424 F::Target: FeeEstimator,
428 let payment_secret = channelmanager
429 .create_inbound_payment_for_hash(payment_hash, amt_msat, invoice_expiry_delta_secs,
430 min_final_cltv_expiry_delta)
431 .map_err(|()| SignOrCreationError::CreationError(CreationError::InvalidAmount))?;
432 _create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(
433 channelmanager, node_signer, logger, network, amt_msat,
434 InvoiceDescription::Direct(
435 &Description::new(description).map_err(SignOrCreationError::CreationError)?,
437 duration_since_epoch, invoice_expiry_delta_secs, payment_hash, payment_secret,
438 min_final_cltv_expiry_delta,
442 fn _create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash<M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref>(
443 channelmanager: &ChannelManager<M, T, ES, NS, SP, F, R, L>, node_signer: NS, logger: L,
444 network: Currency, amt_msat: Option<u64>, description: InvoiceDescription, duration_since_epoch: Duration,
445 invoice_expiry_delta_secs: u32, payment_hash: PaymentHash, payment_secret: PaymentSecret,
446 min_final_cltv_expiry_delta: Option<u16>,
447 ) -> Result<Invoice, SignOrCreationError<()>>
449 M::Target: chain::Watch<<SP::Target as SignerProvider>::Signer>,
450 T::Target: BroadcasterInterface,
451 ES::Target: EntropySource,
452 NS::Target: NodeSigner,
453 SP::Target: SignerProvider,
454 F::Target: FeeEstimator,
458 let our_node_pubkey = channelmanager.get_our_node_id();
459 let channels = channelmanager.list_channels();
461 if min_final_cltv_expiry_delta.is_some() && min_final_cltv_expiry_delta.unwrap().saturating_add(3) < MIN_FINAL_CLTV_EXPIRY_DELTA {
462 return Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort));
465 log_trace!(logger, "Creating invoice with payment hash {}", log_bytes!(payment_hash.0));
467 let invoice = match description {
468 InvoiceDescription::Direct(description) => {
469 InvoiceBuilder::new(network).description(description.0.clone())
471 InvoiceDescription::Hash(hash) => InvoiceBuilder::new(network).description_hash(hash.0),
474 let mut invoice = invoice
475 .duration_since_epoch(duration_since_epoch)
476 .payee_pub_key(our_node_pubkey)
477 .payment_hash(Hash::from_slice(&payment_hash.0).unwrap())
478 .payment_secret(payment_secret)
480 .min_final_cltv_expiry_delta(
481 // Add a buffer of 3 to the delta if present, otherwise use LDK's minimum.
482 min_final_cltv_expiry_delta.map(|x| x.saturating_add(3)).unwrap_or(MIN_FINAL_CLTV_EXPIRY_DELTA).into())
483 .expiry_time(Duration::from_secs(invoice_expiry_delta_secs.into()));
484 if let Some(amt) = amt_msat {
485 invoice = invoice.amount_milli_satoshis(amt);
488 let route_hints = filter_channels(channels, amt_msat, &logger);
489 for hint in route_hints {
490 invoice = invoice.private_route(hint);
493 let raw_invoice = match invoice.build_raw() {
495 Err(e) => return Err(SignOrCreationError::CreationError(e))
497 let hrp_str = raw_invoice.hrp.to_string();
498 let hrp_bytes = hrp_str.as_bytes();
499 let data_without_signature = raw_invoice.data.to_base32();
500 let signed_raw_invoice = raw_invoice.sign(|_| node_signer.sign_invoice(hrp_bytes, &data_without_signature, Recipient::Node));
501 match signed_raw_invoice {
502 Ok(inv) => Ok(Invoice::from_signed(inv).unwrap()),
503 Err(e) => Err(SignOrCreationError::SignError(e))
507 /// Filters the `channels` for an invoice, and returns the corresponding `RouteHint`s to include
510 /// The filtering is based on the following criteria:
511 /// * Only one channel per counterparty node
512 /// * Always select the channel with the highest inbound capacity per counterparty node
513 /// * Prefer channels with capacity at least `min_inbound_capacity_msat` and where the channel
514 /// `is_usable` (i.e. the peer is connected).
515 /// * If any public channel exists, the returned `RouteHint`s will be empty, and the sender will
516 /// need to find the path by looking at the public channels instead
517 fn filter_channels<L: Deref>(
518 channels: Vec<ChannelDetails>, min_inbound_capacity_msat: Option<u64>, logger: &L
519 ) -> Vec<RouteHint> where L::Target: Logger {
520 let mut filtered_channels: HashMap<PublicKey, ChannelDetails> = HashMap::new();
521 let min_inbound_capacity = min_inbound_capacity_msat.unwrap_or(0);
522 let mut min_capacity_channel_exists = false;
523 let mut online_channel_exists = false;
524 let mut online_min_capacity_channel_exists = false;
526 log_trace!(logger, "Considering {} channels for invoice route hints", channels.len());
527 for channel in channels.into_iter().filter(|chan| chan.is_channel_ready) {
528 if channel.get_inbound_payment_scid().is_none() || channel.counterparty.forwarding_info.is_none() {
529 log_trace!(logger, "Ignoring channel {} for invoice route hints", log_bytes!(channel.channel_id));
533 if channel.is_public {
534 // If any public channel exists, return no hints and let the sender
535 // look at the public channels instead.
536 log_trace!(logger, "Not including channels in invoice route hints on account of public channel {}",
537 log_bytes!(channel.channel_id));
541 if channel.inbound_capacity_msat >= min_inbound_capacity {
542 if !min_capacity_channel_exists {
543 log_trace!(logger, "Channel with enough inbound capacity exists for invoice route hints");
544 min_capacity_channel_exists = true;
547 if channel.is_usable {
548 online_min_capacity_channel_exists = true;
552 if channel.is_usable {
553 if !online_channel_exists {
554 log_trace!(logger, "Channel with connected peer exists for invoice route hints");
555 online_channel_exists = true;
559 match filtered_channels.entry(channel.counterparty.node_id) {
560 hash_map::Entry::Occupied(mut entry) => {
561 let current_max_capacity = entry.get().inbound_capacity_msat;
562 if channel.inbound_capacity_msat < current_max_capacity {
564 "Preferring counterparty {} channel {} ({} msats) over {} ({} msats) for invoice route hints",
565 log_pubkey!(channel.counterparty.node_id),
566 log_bytes!(entry.get().channel_id), current_max_capacity,
567 log_bytes!(channel.channel_id), channel.inbound_capacity_msat);
571 "Preferring counterparty {} channel {} ({} msats) over {} ({} msats) for invoice route hints",
572 log_pubkey!(channel.counterparty.node_id),
573 log_bytes!(channel.channel_id), channel.inbound_capacity_msat,
574 log_bytes!(entry.get().channel_id), current_max_capacity);
575 entry.insert(channel);
577 hash_map::Entry::Vacant(entry) => {
578 entry.insert(channel);
583 let route_hint_from_channel = |channel: ChannelDetails| {
584 let forwarding_info = channel.counterparty.forwarding_info.as_ref().unwrap();
585 RouteHint(vec![RouteHintHop {
586 src_node_id: channel.counterparty.node_id,
587 short_channel_id: channel.get_inbound_payment_scid().unwrap(),
589 base_msat: forwarding_info.fee_base_msat,
590 proportional_millionths: forwarding_info.fee_proportional_millionths,
592 cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
593 htlc_minimum_msat: channel.inbound_htlc_minimum_msat,
594 htlc_maximum_msat: channel.inbound_htlc_maximum_msat,}])
596 // If all channels are private, prefer to return route hints which have a higher capacity than
597 // the payment value and where we're currently connected to the channel counterparty.
598 // Even if we cannot satisfy both goals, always ensure we include *some* hints, preferring
599 // those which meet at least one criteria.
602 .map(|(_, channel)| channel)
604 let has_enough_capacity = channel.inbound_capacity_msat >= min_inbound_capacity;
605 let include_channel = if online_min_capacity_channel_exists {
606 has_enough_capacity && channel.is_usable
607 } else if min_capacity_channel_exists && online_channel_exists {
608 // If there are some online channels and some min_capacity channels, but no
609 // online-and-min_capacity channels, just include the min capacity ones and ignore
612 } else if min_capacity_channel_exists {
614 } else if online_channel_exists {
619 log_trace!(logger, "Including channel {} in invoice route hints",
620 log_bytes!(channel.channel_id));
621 } else if !has_enough_capacity {
622 log_trace!(logger, "Ignoring channel {} without enough capacity for invoice route hints",
623 log_bytes!(channel.channel_id));
625 debug_assert!(!channel.is_usable);
626 log_trace!(logger, "Ignoring channel {} with disconnected peer",
627 log_bytes!(channel.channel_id));
632 .map(route_hint_from_channel)
633 .collect::<Vec<RouteHint>>()
638 use core::time::Duration;
639 use crate::{Currency, Description, InvoiceDescription, SignOrCreationError, CreationError};
640 use bitcoin_hashes::{Hash, sha256};
641 use bitcoin_hashes::sha256::Hash as Sha256;
642 use lightning::chain::keysinterface::{EntropySource, PhantomKeysManager};
643 use lightning::ln::{PaymentPreimage, PaymentHash};
644 use lightning::ln::channelmanager::{PhantomRouteHints, MIN_FINAL_CLTV_EXPIRY_DELTA, PaymentId};
645 use lightning::ln::functional_test_utils::*;
646 use lightning::ln::msgs::ChannelMessageHandler;
647 use lightning::routing::router::{PaymentParameters, RouteParameters, find_route};
648 use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider, Event};
649 use lightning::util::test_utils;
650 use lightning::util::config::UserConfig;
651 use crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch;
652 use std::collections::HashSet;
655 fn test_from_channelmanager() {
656 let chanmon_cfgs = create_chanmon_cfgs(2);
657 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
658 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
659 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
660 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
661 let non_default_invoice_expiry_secs = 4200;
662 let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
663 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
664 Some(10_000), "test".to_string(), Duration::from_secs(1234567),
665 non_default_invoice_expiry_secs, None).unwrap();
666 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
667 // If no `min_final_cltv_expiry_delta` is specified, then it should be `MIN_FINAL_CLTV_EXPIRY_DELTA`.
668 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
669 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
670 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
672 // Invoice SCIDs should always use inbound SCID aliases over the real channel ID, if one is
674 let chan = &nodes[1].node.list_usable_channels()[0];
675 assert_eq!(invoice.route_hints().len(), 1);
676 assert_eq!(invoice.route_hints()[0].0.len(), 1);
677 assert_eq!(invoice.route_hints()[0].0[0].short_channel_id, chan.inbound_scid_alias.unwrap());
679 assert_eq!(invoice.route_hints()[0].0[0].htlc_minimum_msat, chan.inbound_htlc_minimum_msat);
680 assert_eq!(invoice.route_hints()[0].0[0].htlc_maximum_msat, chan.inbound_htlc_maximum_msat);
682 let payment_params = PaymentParameters::from_node_id(invoice.recover_payee_pub_key(),
683 invoice.min_final_cltv_expiry_delta() as u32)
684 .with_features(invoice.features().unwrap().clone())
685 .with_route_hints(invoice.route_hints());
686 let route_params = RouteParameters {
688 final_value_msat: invoice.amount_milli_satoshis().unwrap(),
690 let first_hops = nodes[0].node.list_usable_channels();
691 let network_graph = &node_cfgs[0].network_graph;
692 let logger = test_utils::TestLogger::new();
693 let scorer = test_utils::TestScorer::new();
694 let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
695 let route = find_route(
696 &nodes[0].node.get_our_node_id(), &route_params, &network_graph,
697 Some(&first_hops.iter().collect::<Vec<_>>()), &logger, &scorer, &random_seed_bytes
700 let payment_event = {
701 let mut payment_hash = PaymentHash([0; 32]);
702 payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
703 nodes[0].node.send_payment(&route, payment_hash, &Some(invoice.payment_secret().clone()), PaymentId(payment_hash.0)).unwrap();
704 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
705 assert_eq!(added_monitors.len(), 1);
706 added_monitors.clear();
708 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
709 assert_eq!(events.len(), 1);
710 SendEvent::from_event(events.remove(0))
713 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
714 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
715 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
716 assert_eq!(added_monitors.len(), 1);
717 added_monitors.clear();
718 let events = nodes[1].node.get_and_clear_pending_msg_events();
719 assert_eq!(events.len(), 2);
722 fn do_create_invoice_min_final_cltv_delta(with_custom_delta: bool) {
723 let chanmon_cfgs = create_chanmon_cfgs(2);
724 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
725 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
726 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
727 let custom_min_final_cltv_expiry_delta = Some(50);
729 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
730 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
731 Some(10_000), "".into(), Duration::from_secs(1234567), 3600,
732 if with_custom_delta { custom_min_final_cltv_expiry_delta } else { None },
734 assert_eq!(invoice.min_final_cltv_expiry_delta(), if with_custom_delta {
735 custom_min_final_cltv_expiry_delta.unwrap() + 3 /* Buffer */} else { MIN_FINAL_CLTV_EXPIRY_DELTA } as u64);
739 fn test_create_invoice_custom_min_final_cltv_delta() {
740 do_create_invoice_min_final_cltv_delta(true);
741 do_create_invoice_min_final_cltv_delta(false);
745 fn create_invoice_min_final_cltv_delta_equals_htlc_fail_buffer() {
746 let chanmon_cfgs = create_chanmon_cfgs(2);
747 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
748 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
749 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
750 let custom_min_final_cltv_expiry_delta = Some(21);
752 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
753 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
754 Some(10_000), "".into(), Duration::from_secs(1234567), 3600,
755 custom_min_final_cltv_expiry_delta,
757 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
761 fn test_create_invoice_with_description_hash() {
762 let chanmon_cfgs = create_chanmon_cfgs(2);
763 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
764 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
765 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
766 let description_hash = crate::Sha256(Hash::hash("Testing description_hash".as_bytes()));
767 let invoice = crate::utils::create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch(
768 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
769 Some(10_000), description_hash, Duration::from_secs(1234567), 3600, None,
771 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
772 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
773 assert_eq!(invoice.description(), InvoiceDescription::Hash(&crate::Sha256(Sha256::hash("Testing description_hash".as_bytes()))));
777 fn test_create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash() {
778 let chanmon_cfgs = create_chanmon_cfgs(2);
779 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
780 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
781 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
782 let payment_hash = PaymentHash([0; 32]);
783 let invoice = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(
784 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
785 Some(10_000), "test".to_string(), Duration::from_secs(1234567), 3600,
788 assert_eq!(invoice.amount_pico_btc(), Some(100_000));
789 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
790 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
791 assert_eq!(invoice.payment_hash(), &sha256::Hash::from_slice(&payment_hash.0[..]).unwrap());
795 fn test_hints_includes_single_channels_to_nodes() {
796 let chanmon_cfgs = create_chanmon_cfgs(3);
797 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
798 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
799 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
801 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
802 let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
804 let mut scid_aliases = HashSet::new();
805 scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
806 scid_aliases.insert(chan_2_0.0.short_channel_id_alias.unwrap());
808 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
812 fn test_hints_has_only_highest_inbound_capacity_channel() {
813 let chanmon_cfgs = create_chanmon_cfgs(2);
814 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
815 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
816 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
817 let _chan_1_0_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0);
818 let chan_1_0_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 10_000_000, 0);
819 let _chan_1_0_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 1_000_000, 0);
820 let mut scid_aliases = HashSet::new();
821 scid_aliases.insert(chan_1_0_high_inbound_capacity.0.short_channel_id_alias.unwrap());
822 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
826 fn test_hints_has_only_online_channels() {
827 let chanmon_cfgs = create_chanmon_cfgs(4);
828 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
829 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
830 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
831 let chan_a = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 10_000_000, 0);
832 let chan_b = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 10_000_000, 0);
833 let _chan_c = create_unannounced_chan_between_nodes_with_value(&nodes, 3, 0, 1_000_000, 0);
835 // With all peers connected we should get all hints that have sufficient value
836 let mut scid_aliases = HashSet::new();
837 scid_aliases.insert(chan_a.0.short_channel_id_alias.unwrap());
838 scid_aliases.insert(chan_b.0.short_channel_id_alias.unwrap());
840 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases.clone());
842 // With only one sufficient-value peer connected we should only get its hint
843 scid_aliases.remove(&chan_b.0.short_channel_id_alias.unwrap());
844 nodes[0].node.peer_disconnected(&nodes[2].node.get_our_node_id());
845 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases.clone());
847 // If we don't have any sufficient-value peers connected we should get all hints with
848 // sufficient value, even though there is a connected insufficient-value peer.
849 scid_aliases.insert(chan_b.0.short_channel_id_alias.unwrap());
850 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
851 match_invoice_routes(Some(1_000_000_000), &nodes[0], scid_aliases);
855 fn test_forwarding_info_not_assigned_channel_excluded_from_hints() {
856 let chanmon_cfgs = create_chanmon_cfgs(3);
857 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
858 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
859 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
860 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
862 // Create an unannonced channel between `nodes[2]` and `nodes[0]`, for which the
863 // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
864 // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
865 let mut private_chan_cfg = UserConfig::default();
866 private_chan_cfg.channel_handshake_config.announced_channel = false;
867 let temporary_channel_id = nodes[2].node.create_channel(nodes[0].node.get_our_node_id(), 1_000_000, 500_000_000, 42, Some(private_chan_cfg)).unwrap();
868 let open_channel = get_event_msg!(nodes[2], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
869 nodes[0].node.handle_open_channel(&nodes[2].node.get_our_node_id(), &open_channel);
870 let accept_channel = get_event_msg!(nodes[0], MessageSendEvent::SendAcceptChannel, nodes[2].node.get_our_node_id());
871 nodes[2].node.handle_accept_channel(&nodes[0].node.get_our_node_id(), &accept_channel);
873 let tx = sign_funding_transaction(&nodes[2], &nodes[0], 1_000_000, temporary_channel_id);
875 let conf_height = core::cmp::max(nodes[2].best_block_info().1 + 1, nodes[0].best_block_info().1 + 1);
876 confirm_transaction_at(&nodes[2], &tx, conf_height);
877 connect_blocks(&nodes[2], CHAN_CONFIRM_DEPTH - 1);
878 confirm_transaction_at(&nodes[0], &tx, conf_height);
879 connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
880 let as_channel_ready = get_event_msg!(nodes[2], MessageSendEvent::SendChannelReady, nodes[0].node.get_our_node_id());
881 nodes[2].node.handle_channel_ready(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendChannelReady, nodes[2].node.get_our_node_id()));
882 get_event_msg!(nodes[2], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
883 nodes[0].node.handle_channel_ready(&nodes[2].node.get_our_node_id(), &as_channel_ready);
884 get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[2].node.get_our_node_id());
885 expect_channel_ready_event(&nodes[0], &nodes[2].node.get_our_node_id());
886 expect_channel_ready_event(&nodes[2], &nodes[0].node.get_our_node_id());
888 // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the second
889 // channel, the channel will never be assigned any `counterparty.forwarding_info`.
890 // Therefore only `chan_1_0` should be included in the hints.
891 let mut scid_aliases = HashSet::new();
892 scid_aliases.insert(chan_1_0.0.short_channel_id_alias.unwrap());
893 match_invoice_routes(Some(5000), &nodes[0], scid_aliases);
897 fn test_no_hints_if_a_mix_between_public_and_private_channel_exists() {
898 let chanmon_cfgs = create_chanmon_cfgs(3);
899 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
900 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
901 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
902 let _chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
904 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
905 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
906 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
908 // Ensure that the invoice doesn't include any route hints for any of `nodes[0]` channels,
909 // even though all channels between `nodes[1]` and `nodes[0]` are private, as there is a
910 // public channel between `nodes[2]` and `nodes[0]`
911 match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
915 fn test_only_public_channels_includes_no_channels_in_hints() {
916 let chanmon_cfgs = create_chanmon_cfgs(3);
917 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
918 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
919 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
920 let chan_1_0 = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 100000, 10001);
921 nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &chan_1_0.0);
922 nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_1_0.1);
924 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
925 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
926 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
928 // As all of `nodes[0]` channels are public, no channels should be included in the hints
929 match_invoice_routes(Some(5000), &nodes[0], HashSet::new());
933 fn test_channels_with_lower_inbound_capacity_than_invoice_amt_hints_filtering() {
934 let chanmon_cfgs = create_chanmon_cfgs(3);
935 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
936 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
937 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
938 let chan_1_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 0, 100_000, 0);
939 let chan_2_0 = create_unannounced_chan_between_nodes_with_value(&nodes, 2, 0, 1_000_000, 0);
941 // As the invoice amt is 1 msat above chan_1_0's inbound capacity, it shouldn't be included
942 let mut scid_aliases_99_000_001_msat = HashSet::new();
943 scid_aliases_99_000_001_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
945 match_invoice_routes(Some(99_000_001), &nodes[0], scid_aliases_99_000_001_msat);
947 // As the invoice amt is exactly at chan_1_0's inbound capacity, it should be included
948 let mut scid_aliases_99_000_000_msat = HashSet::new();
949 scid_aliases_99_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
950 scid_aliases_99_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
952 match_invoice_routes(Some(99_000_000), &nodes[0], scid_aliases_99_000_000_msat);
954 // As the invoice amt is above all channels' inbound capacity, they will still be included
955 let mut scid_aliases_2_000_000_000_msat = HashSet::new();
956 scid_aliases_2_000_000_000_msat.insert(chan_1_0.0.short_channel_id_alias.unwrap());
957 scid_aliases_2_000_000_000_msat.insert(chan_2_0.0.short_channel_id_alias.unwrap());
959 match_invoice_routes(Some(2_000_000_000), &nodes[0], scid_aliases_2_000_000_000_msat);
961 // An invoice with no specified amount should include all channels in the route hints.
962 let mut scid_aliases_no_specified_amount = HashSet::new();
963 scid_aliases_no_specified_amount.insert(chan_1_0.0.short_channel_id_alias.unwrap());
964 scid_aliases_no_specified_amount.insert(chan_2_0.0.short_channel_id_alias.unwrap());
966 match_invoice_routes(None, &nodes[0], scid_aliases_no_specified_amount);
969 fn match_invoice_routes<'a, 'b: 'a, 'c: 'b>(
970 invoice_amt: Option<u64>,
971 invoice_node: &Node<'a, 'b, 'c>,
972 mut chan_ids_to_match: HashSet<u64>
974 let invoice = create_invoice_from_channelmanager_and_duration_since_epoch(
975 &invoice_node.node, invoice_node.keys_manager, invoice_node.logger,
976 Currency::BitcoinTestnet, invoice_amt, "test".to_string(), Duration::from_secs(1234567),
977 3600, None).unwrap();
978 let hints = invoice.private_routes();
981 let hint_short_chan_id = (hint.0).0[0].short_channel_id;
982 assert!(chan_ids_to_match.remove(&hint_short_chan_id));
984 assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
988 #[cfg(feature = "std")]
989 fn test_multi_node_receive() {
990 do_test_multi_node_receive(true);
991 do_test_multi_node_receive(false);
994 #[cfg(feature = "std")]
995 fn do_test_multi_node_receive(user_generated_pmt_hash: bool) {
996 let mut chanmon_cfgs = create_chanmon_cfgs(3);
997 let seed_1 = [42 as u8; 32];
998 let seed_2 = [43 as u8; 32];
999 let cross_node_seed = [44 as u8; 32];
1000 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1001 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1002 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1003 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1004 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1005 let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1006 nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &chan_0_1.1);
1007 nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_1.0);
1008 let chan_0_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1009 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_0_2.1);
1010 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_2.0);
1012 let payment_amt = 10_000;
1013 let route_hints = vec![
1014 nodes[1].node.get_phantom_route_hints(),
1015 nodes[2].node.get_phantom_route_hints(),
1018 let user_payment_preimage = PaymentPreimage([1; 32]);
1019 let payment_hash = if user_generated_pmt_hash {
1020 Some(PaymentHash(Sha256::hash(&user_payment_preimage.0[..]).into_inner()))
1024 let non_default_invoice_expiry_secs = 4200;
1027 crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestLogger>(
1028 Some(payment_amt), payment_hash, "test".to_string(), non_default_invoice_expiry_secs,
1029 route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager, &nodes[1].logger,
1030 Currency::BitcoinTestnet, None, Duration::from_secs(1234567)
1032 let (payment_hash, payment_secret) = (PaymentHash(invoice.payment_hash().into_inner()), *invoice.payment_secret());
1033 let payment_preimage = if user_generated_pmt_hash {
1034 user_payment_preimage
1036 nodes[1].node.get_payment_preimage(payment_hash, payment_secret).unwrap()
1039 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
1040 assert_eq!(invoice.description(), InvoiceDescription::Direct(&Description("test".to_string())));
1041 assert_eq!(invoice.route_hints().len(), 2);
1042 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1043 assert!(!invoice.features().unwrap().supports_basic_mpp());
1045 let payment_params = PaymentParameters::from_node_id(invoice.recover_payee_pub_key(),
1046 invoice.min_final_cltv_expiry_delta() as u32)
1047 .with_features(invoice.features().unwrap().clone())
1048 .with_route_hints(invoice.route_hints());
1049 let params = RouteParameters {
1051 final_value_msat: invoice.amount_milli_satoshis().unwrap(),
1053 let first_hops = nodes[0].node.list_usable_channels();
1054 let network_graph = &node_cfgs[0].network_graph;
1055 let logger = test_utils::TestLogger::new();
1056 let scorer = test_utils::TestScorer::new();
1057 let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
1058 let route = find_route(
1059 &nodes[0].node.get_our_node_id(), ¶ms, &network_graph,
1060 Some(&first_hops.iter().collect::<Vec<_>>()), &logger, &scorer, &random_seed_bytes
1062 let (payment_event, fwd_idx) = {
1063 let mut payment_hash = PaymentHash([0; 32]);
1064 payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
1065 nodes[0].node.send_payment(&route, payment_hash, &Some(invoice.payment_secret().clone()), PaymentId(payment_hash.0)).unwrap();
1066 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
1067 assert_eq!(added_monitors.len(), 1);
1068 added_monitors.clear();
1070 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1071 assert_eq!(events.len(), 1);
1072 let fwd_idx = match events[0] {
1073 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
1074 if node_id == nodes[1].node.get_our_node_id() {
1078 _ => panic!("Unexpected event")
1080 (SendEvent::from_event(events.remove(0)), fwd_idx)
1082 nodes[fwd_idx].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1083 commitment_signed_dance!(nodes[fwd_idx], nodes[0], &payment_event.commitment_msg, false, true);
1085 // Note that we have to "forward pending HTLCs" twice before we see the PaymentClaimable as
1086 // this "emulates" the payment taking two hops, providing some privacy to make phantom node
1087 // payments "look real" by taking more time.
1088 expect_pending_htlcs_forwardable_ignore!(nodes[fwd_idx]);
1089 nodes[fwd_idx].node.process_pending_htlc_forwards();
1090 expect_pending_htlcs_forwardable_ignore!(nodes[fwd_idx]);
1091 nodes[fwd_idx].node.process_pending_htlc_forwards();
1093 let payment_preimage_opt = if user_generated_pmt_hash { None } else { Some(payment_preimage) };
1094 expect_payment_claimable!(&nodes[fwd_idx], payment_hash, payment_secret, payment_amt, payment_preimage_opt, route.paths[0].last().unwrap().pubkey);
1095 do_claim_payment_along_route(&nodes[0], &vec!(&vec!(&nodes[fwd_idx])[..]), false, payment_preimage);
1096 let events = nodes[0].node.get_and_clear_pending_events();
1097 assert_eq!(events.len(), 2);
1099 Event::PaymentSent { payment_preimage: ref ev_preimage, payment_hash: ref ev_hash, ref fee_paid_msat, .. } => {
1100 assert_eq!(payment_preimage, *ev_preimage);
1101 assert_eq!(payment_hash, *ev_hash);
1102 assert_eq!(fee_paid_msat, &Some(0));
1104 _ => panic!("Unexpected event")
1107 Event::PaymentPathSuccessful { payment_hash: hash, .. } => {
1108 assert_eq!(hash, Some(payment_hash));
1110 _ => panic!("Unexpected event")
1115 #[cfg(feature = "std")]
1116 fn test_multi_node_hints_has_htlc_min_max_values() {
1117 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1118 let seed_1 = [42 as u8; 32];
1119 let seed_2 = [43 as u8; 32];
1120 let cross_node_seed = [44 as u8; 32];
1121 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1122 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1123 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1124 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1125 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1127 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1128 create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1130 let payment_amt = 20_000;
1131 let (payment_hash, _payment_secret) = nodes[1].node.create_inbound_payment(Some(payment_amt), 3600, None).unwrap();
1132 let route_hints = vec![
1133 nodes[1].node.get_phantom_route_hints(),
1134 nodes[2].node.get_phantom_route_hints(),
1137 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1138 &test_utils::TestKeysInterface, &test_utils::TestLogger>(Some(payment_amt), Some(payment_hash),
1139 "test".to_string(), 3600, route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager,
1140 &nodes[1].logger, Currency::BitcoinTestnet, None, Duration::from_secs(1234567)).unwrap();
1142 let chan_0_1 = &nodes[1].node.list_usable_channels()[0];
1143 assert_eq!(invoice.route_hints()[0].0[0].htlc_minimum_msat, chan_0_1.inbound_htlc_minimum_msat);
1144 assert_eq!(invoice.route_hints()[0].0[0].htlc_maximum_msat, chan_0_1.inbound_htlc_maximum_msat);
1146 let chan_0_2 = &nodes[2].node.list_usable_channels()[0];
1147 assert_eq!(invoice.route_hints()[1].0[0].htlc_minimum_msat, chan_0_2.inbound_htlc_minimum_msat);
1148 assert_eq!(invoice.route_hints()[1].0[0].htlc_maximum_msat, chan_0_2.inbound_htlc_maximum_msat);
1152 #[cfg(feature = "std")]
1153 fn create_phantom_invoice_with_description_hash() {
1154 let chanmon_cfgs = create_chanmon_cfgs(3);
1155 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1156 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1157 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1159 let payment_amt = 20_000;
1160 let route_hints = vec![
1161 nodes[1].node.get_phantom_route_hints(),
1162 nodes[2].node.get_phantom_route_hints(),
1165 let description_hash = crate::Sha256(Hash::hash("Description hash phantom invoice".as_bytes()));
1166 let non_default_invoice_expiry_secs = 4200;
1167 let invoice = crate::utils::create_phantom_invoice_with_description_hash::<
1168 &test_utils::TestKeysInterface, &test_utils::TestKeysInterface, &test_utils::TestLogger,
1170 Some(payment_amt), None, non_default_invoice_expiry_secs, description_hash,
1171 route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager, &nodes[1].logger,
1172 Currency::BitcoinTestnet, None, Duration::from_secs(1234567),
1175 assert_eq!(invoice.amount_pico_btc(), Some(200_000));
1176 assert_eq!(invoice.min_final_cltv_expiry_delta(), MIN_FINAL_CLTV_EXPIRY_DELTA as u64);
1177 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1178 assert_eq!(invoice.description(), InvoiceDescription::Hash(&crate::Sha256(Sha256::hash("Description hash phantom invoice".as_bytes()))));
1182 #[cfg(feature = "std")]
1183 fn create_phantom_invoice_with_custom_payment_hash_and_custom_min_final_cltv_delta() {
1184 let chanmon_cfgs = create_chanmon_cfgs(3);
1185 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1186 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1187 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1189 let payment_amt = 20_000;
1190 let route_hints = vec![
1191 nodes[1].node.get_phantom_route_hints(),
1192 nodes[2].node.get_phantom_route_hints(),
1194 let user_payment_preimage = PaymentPreimage([1; 32]);
1195 let payment_hash = Some(PaymentHash(Sha256::hash(&user_payment_preimage.0[..]).into_inner()));
1196 let non_default_invoice_expiry_secs = 4200;
1197 let min_final_cltv_expiry_delta = Some(100);
1198 let duration_since_epoch = Duration::from_secs(1234567);
1199 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1200 &test_utils::TestKeysInterface, &test_utils::TestLogger>(Some(payment_amt), payment_hash,
1201 "".to_string(), non_default_invoice_expiry_secs, route_hints, &nodes[1].keys_manager, &nodes[1].keys_manager,
1202 &nodes[1].logger, Currency::BitcoinTestnet, min_final_cltv_expiry_delta, duration_since_epoch).unwrap();
1203 assert_eq!(invoice.amount_pico_btc(), Some(200_000));
1204 assert_eq!(invoice.min_final_cltv_expiry_delta(), (min_final_cltv_expiry_delta.unwrap() + 3) as u64);
1205 assert_eq!(invoice.expiry_time(), Duration::from_secs(non_default_invoice_expiry_secs.into()));
1209 #[cfg(feature = "std")]
1210 fn test_multi_node_hints_includes_single_channels_to_participating_nodes() {
1211 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1212 let seed_1 = [42 as u8; 32];
1213 let seed_2 = [43 as u8; 32];
1214 let cross_node_seed = [44 as u8; 32];
1215 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1216 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1217 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1218 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1219 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1221 let chan_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1222 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1224 let mut scid_aliases = HashSet::new();
1225 scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
1226 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1228 match_multi_node_invoice_routes(
1231 vec![&nodes[1], &nodes[2],],
1238 #[cfg(feature = "std")]
1239 fn test_multi_node_hints_includes_one_channel_of_each_counterparty_nodes_per_participating_node() {
1240 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1241 let seed_1 = [42 as u8; 32];
1242 let seed_2 = [43 as u8; 32];
1243 let cross_node_seed = [44 as u8; 32];
1244 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1245 chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1246 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1247 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1248 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1250 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1251 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001);
1252 let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 3_000_000, 10005);
1254 let mut scid_aliases = HashSet::new();
1255 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1256 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1257 scid_aliases.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1259 match_multi_node_invoice_routes(
1262 vec![&nodes[2], &nodes[3],],
1269 #[cfg(feature = "std")]
1270 fn test_multi_node_forwarding_info_not_assigned_channel_excluded_from_hints() {
1271 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1272 let seed_1 = [42 as u8; 32];
1273 let seed_2 = [43 as u8; 32];
1274 let cross_node_seed = [44 as u8; 32];
1275 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1276 chanmon_cfgs[3].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1277 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1278 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1279 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1281 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1282 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 1000000, 10001);
1284 // Create an unannonced channel between `nodes[1]` and `nodes[3]`, for which the
1285 // `msgs::ChannelUpdate` is never handled for the node(s). As the `msgs::ChannelUpdate`
1286 // is never handled, the `channel.counterparty.forwarding_info` is never assigned.
1287 let mut private_chan_cfg = UserConfig::default();
1288 private_chan_cfg.channel_handshake_config.announced_channel = false;
1289 let temporary_channel_id = nodes[1].node.create_channel(nodes[3].node.get_our_node_id(), 1_000_000, 500_000_000, 42, Some(private_chan_cfg)).unwrap();
1290 let open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[3].node.get_our_node_id());
1291 nodes[3].node.handle_open_channel(&nodes[1].node.get_our_node_id(), &open_channel);
1292 let accept_channel = get_event_msg!(nodes[3], MessageSendEvent::SendAcceptChannel, nodes[1].node.get_our_node_id());
1293 nodes[1].node.handle_accept_channel(&nodes[3].node.get_our_node_id(), &accept_channel);
1295 let tx = sign_funding_transaction(&nodes[1], &nodes[3], 1_000_000, temporary_channel_id);
1297 let conf_height = core::cmp::max(nodes[1].best_block_info().1 + 1, nodes[3].best_block_info().1 + 1);
1298 confirm_transaction_at(&nodes[1], &tx, conf_height);
1299 connect_blocks(&nodes[1], CHAN_CONFIRM_DEPTH - 1);
1300 confirm_transaction_at(&nodes[3], &tx, conf_height);
1301 connect_blocks(&nodes[3], CHAN_CONFIRM_DEPTH - 1);
1302 let as_channel_ready = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReady, nodes[3].node.get_our_node_id());
1303 nodes[1].node.handle_channel_ready(&nodes[3].node.get_our_node_id(), &get_event_msg!(nodes[3], MessageSendEvent::SendChannelReady, nodes[1].node.get_our_node_id()));
1304 get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[3].node.get_our_node_id());
1305 nodes[3].node.handle_channel_ready(&nodes[1].node.get_our_node_id(), &as_channel_ready);
1306 get_event_msg!(nodes[3], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
1307 expect_channel_ready_event(&nodes[1], &nodes[3].node.get_our_node_id());
1308 expect_channel_ready_event(&nodes[3], &nodes[1].node.get_our_node_id());
1310 // As `msgs::ChannelUpdate` was never handled for the participating node(s) of the third
1311 // channel, the channel will never be assigned any `counterparty.forwarding_info`.
1312 // Therefore only `chan_0_3` should be included in the hints for `nodes[3]`.
1313 let mut scid_aliases = HashSet::new();
1314 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1315 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1317 match_multi_node_invoice_routes(
1320 vec![&nodes[2], &nodes[3],],
1327 #[cfg(feature = "std")]
1328 fn test_multi_node_with_only_public_channels_hints_includes_only_phantom_route() {
1329 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1330 let seed_1 = [42 as u8; 32];
1331 let seed_2 = [43 as u8; 32];
1332 let cross_node_seed = [44 as u8; 32];
1333 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1334 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1335 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1336 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1337 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1339 let chan_0_1 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001);
1341 let chan_2_0 = create_announced_chan_between_nodes_with_value(&nodes, 2, 0, 100000, 10001);
1342 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_2_0.1);
1343 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_2_0.0);
1345 // Hints should include `chan_0_1` from as `nodes[1]` only have private channels, but not
1346 // `chan_0_2` as `nodes[2]` only has public channels.
1347 let mut scid_aliases = HashSet::new();
1348 scid_aliases.insert(chan_0_1.0.short_channel_id_alias.unwrap());
1350 match_multi_node_invoice_routes(
1353 vec![&nodes[1], &nodes[2],],
1360 #[cfg(feature = "std")]
1361 fn test_multi_node_with_mixed_public_and_private_channel_hints_includes_only_phantom_route() {
1362 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1363 let seed_1 = [42 as u8; 32];
1364 let seed_2 = [43 as u8; 32];
1365 let cross_node_seed = [44 as u8; 32];
1366 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1367 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1368 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1369 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1370 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1372 let chan_0_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1373 nodes[0].node.handle_channel_update(&nodes[2].node.get_our_node_id(), &chan_0_2.1);
1374 nodes[2].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &chan_0_2.0);
1375 let _chan_1_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001);
1377 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100000, 10001);
1379 // Hints should include `chan_0_3` from as `nodes[3]` only have private channels, and no
1380 // channels for `nodes[2]` as it contains a mix of public and private channels.
1381 let mut scid_aliases = HashSet::new();
1382 scid_aliases.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1384 match_multi_node_invoice_routes(
1387 vec![&nodes[2], &nodes[3],],
1394 #[cfg(feature = "std")]
1395 fn test_multi_node_hints_has_only_highest_inbound_capacity_channel() {
1396 let mut chanmon_cfgs = create_chanmon_cfgs(3);
1397 let seed_1 = [42 as u8; 32];
1398 let seed_2 = [43 as u8; 32];
1399 let cross_node_seed = [44 as u8; 32];
1400 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1401 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1402 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1403 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1404 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1406 let _chan_0_1_low_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, 0);
1407 let chan_0_1_high_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 0);
1408 let _chan_0_1_medium_inbound_capacity = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
1409 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001);
1411 let mut scid_aliases = HashSet::new();
1412 scid_aliases.insert(chan_0_1_high_inbound_capacity.0.short_channel_id_alias.unwrap());
1413 scid_aliases.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1415 match_multi_node_invoice_routes(
1418 vec![&nodes[1], &nodes[2],],
1425 #[cfg(feature = "std")]
1426 fn test_multi_node_channels_inbound_capacity_lower_than_invoice_amt_filtering() {
1427 let mut chanmon_cfgs = create_chanmon_cfgs(4);
1428 let seed_1 = [42 as u8; 32];
1429 let seed_2 = [43 as u8; 32];
1430 let cross_node_seed = [44 as u8; 32];
1431 chanmon_cfgs[1].keys_manager.backing = PhantomKeysManager::new(&seed_1, 43, 44, &cross_node_seed);
1432 chanmon_cfgs[2].keys_manager.backing = PhantomKeysManager::new(&seed_2, 43, 44, &cross_node_seed);
1433 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1434 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1435 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1437 let chan_0_2 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 2, 1_000_000, 0);
1438 let chan_0_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 0, 3, 100_000, 0);
1439 let chan_1_3 = create_unannounced_chan_between_nodes_with_value(&nodes, 1, 3, 200_000, 0);
1441 // Since the invoice 1 msat above chan_0_3's inbound capacity, it should be filtered out.
1442 let mut scid_aliases_99_000_001_msat = HashSet::new();
1443 scid_aliases_99_000_001_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1444 scid_aliases_99_000_001_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1446 match_multi_node_invoice_routes(
1449 vec![&nodes[2], &nodes[3],],
1450 scid_aliases_99_000_001_msat,
1454 // Since the invoice is exactly at chan_0_3's inbound capacity, it should be included.
1455 let mut scid_aliases_99_000_000_msat = HashSet::new();
1456 scid_aliases_99_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1457 scid_aliases_99_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1458 scid_aliases_99_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1460 match_multi_node_invoice_routes(
1463 vec![&nodes[2], &nodes[3],],
1464 scid_aliases_99_000_000_msat,
1468 // Since the invoice is above all of `nodes[2]` channels' inbound capacity, all of
1469 // `nodes[2]` them should be included.
1470 let mut scid_aliases_300_000_000_msat = HashSet::new();
1471 scid_aliases_300_000_000_msat.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1472 scid_aliases_300_000_000_msat.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1473 scid_aliases_300_000_000_msat.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1475 match_multi_node_invoice_routes(
1478 vec![&nodes[2], &nodes[3],],
1479 scid_aliases_300_000_000_msat,
1483 // Since the no specified amount, all channels should included.
1484 let mut scid_aliases_no_specified_amount = HashSet::new();
1485 scid_aliases_no_specified_amount.insert(chan_0_2.0.short_channel_id_alias.unwrap());
1486 scid_aliases_no_specified_amount.insert(chan_0_3.0.short_channel_id_alias.unwrap());
1487 scid_aliases_no_specified_amount.insert(chan_1_3.0.short_channel_id_alias.unwrap());
1489 match_multi_node_invoice_routes(
1492 vec![&nodes[2], &nodes[3],],
1493 scid_aliases_no_specified_amount,
1498 #[cfg(feature = "std")]
1499 fn match_multi_node_invoice_routes<'a, 'b: 'a, 'c: 'b>(
1500 invoice_amt: Option<u64>,
1501 invoice_node: &Node<'a, 'b, 'c>,
1502 network_multi_nodes: Vec<&Node<'a, 'b, 'c>>,
1503 mut chan_ids_to_match: HashSet<u64>,
1504 nodes_contains_public_channels: bool
1506 let phantom_route_hints = network_multi_nodes.iter()
1507 .map(|node| node.node.get_phantom_route_hints())
1508 .collect::<Vec<PhantomRouteHints>>();
1509 let phantom_scids = phantom_route_hints.iter()
1510 .map(|route_hint| route_hint.phantom_scid)
1511 .collect::<HashSet<u64>>();
1513 let invoice = crate::utils::create_phantom_invoice::<&test_utils::TestKeysInterface,
1514 &test_utils::TestKeysInterface, &test_utils::TestLogger>(invoice_amt, None, "test".to_string(),
1515 3600, phantom_route_hints, &invoice_node.keys_manager, &invoice_node.keys_manager,
1516 &invoice_node.logger, Currency::BitcoinTestnet, None, Duration::from_secs(1234567)).unwrap();
1518 let invoice_hints = invoice.private_routes();
1520 for hint in invoice_hints {
1521 let hints = &(hint.0).0;
1524 assert!(nodes_contains_public_channels);
1525 let phantom_scid = hints[0].short_channel_id;
1526 assert!(phantom_scids.contains(&phantom_scid));
1529 let hint_short_chan_id = hints[0].short_channel_id;
1530 assert!(chan_ids_to_match.remove(&hint_short_chan_id));
1531 let phantom_scid = hints[1].short_channel_id;
1532 assert!(phantom_scids.contains(&phantom_scid));
1534 _ => panic!("Incorrect hint length generated")
1537 assert!(chan_ids_to_match.is_empty(), "Unmatched short channel ids: {:?}", chan_ids_to_match);
1541 fn test_create_invoice_fails_with_invalid_custom_min_final_cltv_expiry_delta() {
1542 let chanmon_cfgs = create_chanmon_cfgs(2);
1543 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1544 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1545 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1546 let result = crate::utils::create_invoice_from_channelmanager_and_duration_since_epoch(
1547 &nodes[1].node, nodes[1].keys_manager, nodes[1].logger, Currency::BitcoinTestnet,
1548 Some(10_000), "Some description".into(), Duration::from_secs(1234567), 3600, Some(MIN_FINAL_CLTV_EXPIRY_DELTA - 4),
1551 Err(SignOrCreationError::CreationError(CreationError::MinFinalCltvExpiryDeltaTooShort)) => {},